The safety of the crane is used

Overview of a certain steel company mainspan no.2 steelmaking plant a hook bridge crane hoisting the steel slag, caused by secondary hook header to vice hook to hang spreader collision girder falling, applied on the surface of the hit to death a line homework personnel. At the scene of the accident to a steel mill mainspan, engaged in hoist gantry crane transportation operations lifting equipment is a hook double beam crane, crane rated lifting weight G = 30/10 t S = 19.5 m, span, lifting height H = 16 m, lifting speed.vn = 7.5 n/min, the crane cart running speed vitamin k = 87.6 m/min, the car speed vitamin k = 42.4 m/min, crane work volume for the A5. Accident process for a crane driver at the end of a set of the lifting process, vice hook back, move the hook to assignments, a vice steel crane in the ascent of the at the same time, moved the main hook of crane load, and all the attention focused on the main hook run down, and did not pay attention to pair of hook lifting operation, the secondary hook collision with girder summit, vice hook hook line's fall from 16 m altitude and hit the ground line personnel b, caused b serious accident died on the spot.

Crane (car) of the wheel rim contact with the side of the track

Crane (car) of the wheel rim contact with the side of the track, friction and wear in the running process of a kind of phenomenon. Wheel steel crane and the theory of unilateral clearance on the side of the track can generally be classified as 5 ~ 15 mm, as long as crane (car) in the process of running wheels horizontal offset is greater than this value, gnaw rail occurs, it is gnaw rail boundary conditions. Gnaw rail serious when although crane can not continue to use, but flange and rail friction will increase, will affect the service life of some components, to use causes pecuniary loss to unit. For sino hoist span bridge crane, due to factors such as manufacturing, car easy to gnaw rail accidents. Based on this, this paper analyzes the reasons of large span thin sorghum gnaw rail, put forward the corresponding countermeasures and improvement methods is very necessary. Bridge crane gnaw rail car cause analysis for large size hook bridge crane, in the use of more than a year later, often find crane gnaw rail car phenomenon, and all is the car outside rim gnaw rail to readjust the car wheel after the parallelism and perpendicularity to conform to the requirements, still did not solve the problem.

Multi-function crane is the main equipment in the electrolytic aluminum industry workshop electrolytic workshop

PTM itself structure and is sino hoist used in domestic industrial workshop of ordinary crown difference is bigger, end of PTM has several across the car, and asymmetric arrangement on both sides, on one side of the crane load of this kind of PTM is larger, are different from common crane, and use very frequently. As a result, the steel crane beams under the action of the PTM mechanical performance analysis, understand the crane beam under complex hoist gantry crane load stress mechanism has certain practical value. To this end, this paper conducted the following work: through ANSYS finite element software simulation analysis, extract the different span and different braking structure of multi-function crane beam under load condition and load condition 2 is one of the most disadvantageous section internal force value. Reference for ordinary steel structure design specification of steel crane beam of bridge crane design standard, for multi-function steel crane beam system strength, deflection, stability calculation, and the multi-function crane beam system to evaluate the amount of steel. Through the ANSYS eigenvalue buckling analysis, considering the different load condition, different span of space model, the multi-function steel crane beam system for elastic stability bearing capacity analysis, draw a multi-functional steel crane beam system linear elastic phase of the buckling load and buckling mode.

The status of the large lifting equipment

Where in the world worse than foreign domestic hoisting equipment condition of large hoisting equipment, marks a national engineering machinery manufacturing capacity, determine the traffic construction speed and quality. Our country really started to manufacture large transport machinery lifting equipment in the 70 s, after nearly 30 years of hoist gantry crane exploration, has made great development. Large hoisting equipment level of design capability, manufacturing, lifting load and the intrinsic quality, mechanical properties and the contents of science and technology, continuously leapfrog development. At present, is moving toward product seriation, variety diversification, sino hoist operation, intelligent operation and performance of modern direction. $$in recent years, our country developed successfully developed large hoisting equipment, and identified by authority department has been close to or reached the current international advanced level. And initially formed the development of generation, research generation, reserve generation of production pattern. Based $$$$from scratch to lay looking back the development course we may see that the first 20 years since the founding of new China, our country because do not have the ability to create large lifting equipment, lead to transportation and engineering infrastructure used imports all large lifting equipment. $$in the next few years, our country successfully developed the 38 meters high, weight of 140 tons, the hoisting with 10 tons of port portal crane M10-25 type.

Virtual prototype implementation of double beam bridge crane

Virtual prototype implementation of double beam bridge crane, virtual prototype technology can save on time and money for the designer, so once available, for the vast number of engineering and technical personnel has a great attraction. The virtual prototype technology in the aerospace, weapons manufacturing, engineering machinery, automobile sino hoist and other fields has been widely used in double beam bridge crane as the object of virtual design, application of solidworks 3 d modeling software to complete the bridge crane virtual prototype modeling and assembly of parts and engine. Bridge crane bridge crane can be divided into 2 d assembly model of single girder bridge crane, double girder bridge crane, gm bridge crane, etc. Bridge crane equipment; The car run institutions; Bridge structure; The cab; Block and tackle. Supporting institutions; Cart orbital plane figure bridge crane structure schematic virtual prototype design bridge crane parts hoist gantry crane modeling parts parameterized modeling, first determine the design scheme of bridge crane, then apply solidworks software components of the three-dimensional model is set up, and carries on the parametric design. In the process of parameterized modeling, designer need only a part of sketch of some numerical modeling parameters (length, Angle, etc.) was analyzed and modified.

The use of deep resources

Deep shallow earth resources depleted, the utilization of resources is imperative. But now the use of these resources is very difficult, such as mineral hoisting sino hoist from now hundreds of meters to thousands of meters, the existing technology ascension is difficult or can't do it. Has been proved more than 1500 m deep mineral how to mining? With a bold the diameter of the wire rope or increasing the number of effective? Is the line, this choice is reasonable? The handkerchief to ascend, because the whole series of safety problems in a string so its safety coefficient is high, generally in 5 ~ 9. The higher the hoisting height, the bigger the material hoist gantry crane. Rope is coarse, elevator design and manufacture of the greater difficulty will be. Installation, use and change the rope work more difficult. Such as hoisting height above 1500 m, rope only a weight has been considerable. Mine production conditions, due to causes corrosion and other mechanical damage to the steel wire rope, the use fixed number of year, generally very short, every change once caused great waste of resources, and influence the mine production.

Crane beam is the subgrade support girder vehicle running

Crane beam is the subgrade support girder vehicle running, used in steel structure factory building. Crane rail crane beam, truss car by driving back and forth on the crane beam orbit. Like steel crane beam, the difference between crane beam web plate welding with steel crane plate, provide support for lift girder car lifting heavy objects. Welding crane beam flange plate of the appropriate USES a layer of steel plate, when two layers of steel plate is used, the outer plate should be along the long Liang Tong Settings, and in the design and construction sino hoist should be taken to make the top flange closely contact with two layers of steel plate. Supporting clamp or rigid material rake hard hook crane and similar structure, truss and brake truss crane is unfavorable use. Crane Liang Yi flange or web of welding arc plates with stitching should be adopted and lead plate, penetration butt weld arc plate and lead plate cutting place should be polished smooth. Crane beam welding and welding construction crane truss segment splicing welding should be adopted or friction type high strength bolt connection.

Simple beam bridge crane type

imple beam bridge crane type:

Hot metal ladle crane: used for lifting into the mixer, the molten steel into concast steel furnace and lifting equipment or ingot mould etc. Main car lifting bucket, deputy car to steel crane bucket and so on auxiliary work.

Clamp crane: use clamp to high temperature steel ingot vertically to the pit in soaking pit, or put it out in the ingot of the car.

Stripping crane: for the ingot from the ingot mould forced out. Car have special stripping device, stripping way according to the shape of the mold, some with pole pin ingot ingot crane, use tongs to lodge a mold; Some use tongs pressure mold, with a small pliers ingot.

Loading crane: for the charge to the open hearth furnace. Main car column bottom is equipped with ram, to stir up inside the container and send it to charging. The main column around the vertical axis rotation, ram can be bobbing up and down and turning. Vice car used to repair the furnace sino hoist as auxiliary operations.

Forging crane: to cooperate with hydraulic press forging large workpiece. Main car hanging on the hook special feeder, turned to support and artifacts; The car used to lift the artifacts.

Bridge type crane can be over rectangular court and its operation

Bridge type crane can be above the rectangle area and its operation, more used in the place such as workshop, warehouse, open storage of goods loading and unloading, a beam crane, bridge crane, gantry crane, cable sino hoist, vehicle bridge, etc. (1) beam crane: mainly including single girder bridge crane girder crane and double beam bridge crane cranes single-beam bridge crane bridge girder with h type steel or steel section and steel plate combination. Lifting trolley is often chain hoist, electric hoist, or used as lifting mechanism parts assembled. According to the bridge bearing type and suspension type two kinds. The former bridge along the car on the beam of crane orbit; The bridge along the hanging in the workshop crane orbit under the roof. Single girder bridge crane, electric two break up. Manual single-beam bridge crane institutions working speed is low, the weight is small, but its quality is small, easy to organize production, the cost is low, when used for the power supply after carrying hoist gantry crane is not big, requirements for speed and productivity is not high. Manual single-beam bridge crane using manual monorail trolley as a running car, with the hand chain hoist as lifting mechanism, the bridge is made up of main girder and end beam. Main girder with single beams, beam with steel or bending molding steel plate welded.

Bridge crane can be divided into general bridge crane, simple beam bridge crane and metallurgical special bridge crane 3 kinds

Bridge crane is widely used in indoor and outdoor warehouses, factories, docks and outdoor storage yard, etc. Bridge crane can be divided into general bridge crane, simple beam bridge crane and metallurgical special bridge crane 3 kinds. General bridge According to the frame structure bysino hoistthe car, general bridge operation, the structure of the bridge metal composition. Lifting trolley and running institutions by the lifting mechanism, the car and the car frame of three parts. Lifting mechanism including motor, brake, reducer, drum and pulley. Motor through the gear reducer, drive the drum rotation, make wound reel or wire rope from the reel down, to lift heavy things. The car frame is bracket and install the lifting mechanism and car running parts, such as organization frame, usually for welding structure. Gantry crane is generally based on the door frame structure form, the form of main girder, sling for classification. hoist gantry crane used in port.

(a) the whole gantry crane: no overhanging girder, the car in the main span.

(b) a gantry crane: leg height difference, can be used according to the field of civil engineering request.

(c) double cantilever gantry crane: one of the most common structure form, the structure of the force and the area of effective utilization is reasonable.

(d) of single cantilever gantry crane: this kind of structure is often chosen by site restrictions.

According to the main girder structure

(a) single girder gantry crane

The characteristics of the arm crane and bridge crane are basically the same. Can work, over the round ground and widely used at open handling and installation work, such as a door crane, floating crane, mast cranes, crane and deck crane, etc.

Arm crane include lifting mechanism, luffing mechanism, rotating mechanism. Rely on these institutions cooperate with action, can make the weight lifting and handling within a cylindrical space. Arm crane installed on vehicles, or other forms of transport (mobile) tools, thus constitute the arm posture slewing crane operation. Such as auto crane, wheel crane, tower crane, portal crane, floating crane, rail crane, etc.

Earthwork loader bucket structure

Earthwork loader bucket structure, its bucket body commonly used lowsteel crane , wear-resisting, high strength steel plate welding, cutting edge adopts wear-resisting of manganese in steel materials, side cutting edges and strengthen the Angle plate are made from sino hoist strength wear resistant steel materials.

The steel crane beam

One part of the steel crane beam system design. The steel crane beam is for bridge crane steel components. Crane beam type load on the crane beam and action are: crane vertical load, horizontal and vertical horizontal load, crane repair platform of live load, the part weight of crane beam system, supporting the roof structure of the crane beam system load and wall frame structure. Based on the hoist gantry crane of the steel crane beam damage reason in service, this paper discusses the current steel crane beam design and the difference of the actual stress and its harm, put forward the problems existing in the current in the design of the steel crane beam, and studied and analyzed the existing problems and the breakage of the beam in the design of beam and results in the decrease of its reliability.

Concrete machinery industry consolidation to accelerate

China Construction Machinery Industry Association Concrete  bridge gantry crane  Branch of the past 10 years statistics show that China's holdings of concrete machinery mainly include: 50m3 / h above the mixing station (F) 33931, 44993 concrete pump station, pump 39,889 units, mixer truck 228,822 units; 350L concrete mixer over 200,721 units, reached a total of 548,356 units. The actual construction of the statistics show that a lot of mixing stations produce less than 50% of design capacity.
Although the rate of production is not high, but the industry development prospects of low-threshold access and still continues to attract investors to enter, while the concrete  hoist gantry crane  industry upstream customers, their bargaining power is gradually strengthened.
Concrete manufacturing companies, construction units, and leasing concrete machinery industry accounted for about 80% of the purchasing market share. With conch, landscapes, Jidong, Yatai, Huaxin, China Resources Cement and other large enterprises have entered the concrete market, the company's strong organizational performance and cost advantages will bring new competition; On the other hand, local industries and enterprises concentration is increasing, such as Shanghai construction Group, and its subsidiary companies accounted for the total production of concrete concrete in Shanghai 30% of total market share, which will further enhance the bargaining power of buyers, the size of concrete machinery products, quality and service will also put forward higher requirements.
Throughout 2013, we expect concrete  steel crane  industry consolidation will further exacerbate the product will also provide lightweight, large-scale, high-end, integrated direction. But this also brings another problem --- new machine sales space will be further squeezed upgrading products. Those that produce small, but the high cost of SME, you need to leading enterprises under the law of diminishing marginal utility, to seek a breakthrough in market segments.

Increase the concrete machinery industry consolidation in 2013 and strive to grow over 10%

First half of 2012 compared to the overall decline in construction machinery more than 20% , concrete  hoist gantry crane  industry, a positive growth of 15% has been considered substantial. But by the general trend of the tired , the domestic turnover of enterprises fell concrete , individual enterprises and even fell by 40% ( this data from China Construction Machinery Industry Association Concrete Machinery Branch ) , but to become an indisputable fact . The relatively high margin segments plate, can continue to outshine in 2013 ? Acquired the world's three giant Chinese concrete machinery enterprises can successfully digest, to accelerate growth ? Urbanization bonus , concrete machinery industry is able to enjoy much ?

Severe overcapacity

2013 , China 's construction machinery industry is still the most serious problem to the inventory . 2012 1 ~ 10 months of construction  overhead gantry crane  industry production run Express showed that in October , the national construction machinery industry total industrial output value 42,263,000,000 yuan , an increase of -9.19 % , growth of -4.14 % ; sales value of 41.973 billion yuan , up growth was -7.74 % -8.03 % MoM growth . And 1 to 10 months, the national construction machinery industry 501.633 billion yuan industrial output value , up slightly by 1.53 percent ; completion of the sale value of 492.263 billion yuan , up by only 2.5%. Thus, despite the industry in the chants of " excess capacity to be alert ," but the production expansion and shrinking sales of paradox has not been fundamentally improved.
The reason is nothing more than government " steady growth" development goals, to local authorities, enterprises and even individuals have brought "Once the adjustment is completed , the economy will take off again ," is expected, therefore I went in to the inventory and production capacity is not enough, there is luck, and even continue to increase inventory.
But we should also see that the central decision-making practice has been recognized in the past as an investment and export-led economic growth, the crux and drawbacks, is unlikely to re-launch massive economic stimulus. Meanwhile, with the concrete machinery industry is closely related to the cement , steel and other industries are all high resource consumption, high energy consumption, high pollution industry, sustainable development is restricted . Therefore , accustomed to big money , earn fast money , earn easy money, concrete  overhead bridge crane  industry , very difficult to face like the " golden years " as a high-speed development opportunities.
Investment institutions often said that " counter-cyclical investment enterprise 's dream, is pro-cyclical investment behavior of enterprises ." Most successful businesses , more inclined to the flow of the dull business , after all, is just one example contrarian growth . Therefore, in 2013 , still faced concrete machinery to production of and deleveraging pressures , but by the downstream impact of infrastructure projects, economic recovery is expected to concrete machinery is expected to achieve more than 10% annual growth , which is still in the construction machinery sector boom over high segments .

2013 Construction Machinery difficult transition ahead to where?

Chinese economy continues to decline, the construction  steel crane  market worse. First half of the construction machinery industry in the voices of doubt in the market difficulties ahead. Infrastructure projects, real estate projects 3 years experience pick up weak, sluggish construction machinery enterprises in the development of enterprises in the reflection direction. No sunset industry only sunset business, how to stand out from the weak market. Construction machinery enterprises in transition to where?

   Chase "niche market" clinging to the main industry

German SMEs are called "pearls scattered all over Germany," their way of life may bring us some enlightenment. German professor Hermann Simon 1996 publication of "hidden champions: from around 500 outstanding enterprises unknown revelation," a book that will attract world attention to the obscurity of these German companies: their scattered throughout Germany and numerous , small, mostly family-owned businesses, low-key acting in their respective market segments are veritable leader. These "hidden champions" The reason why people have long been neglected, an important reason is that their products there are only a part of the terminal consumer products,hoist gantry crane such as car sunroof parts; others are very easy to overlook small, such as buttons or drink label on the bottle. Frankfurt University of Finance and Economics Management Bowflex experts pointed out that Germany is a significant feature of SMEs in its products often for the "niche market", it is difficult to know by the public. However, once the German companies with strong manufacturing technology in the market segments to establish quality advantage, they will continue to increase investment in research through innovation to consolidate and expand the lead. For the German family-owned enterprises, the presence of family members, the company's management for the company's business objectives with long-term considerations, not because of short-term performance pressure to give up long-term goals. German companies generally have dedication.bridge gantry crane Once you enter a trade, they will single-minded focus on this will not be because other sectors "money scene" better and make a fresh start, or a variety of business. This undoubtedly is their success.

Improve value-added engineering machinery products division

As we all know , domestic engineering  sino hoist  products due to low-tech products , low added value and criticized . The value-added products to improve construction machinery , engineering machinery enterprises should start with the following points . First, the construction machinery manufacturing enterprises should enhance the manufacturing process to start, increase scientific and technological research and development and technological upgrading efforts, eliminate obsolete processing equipment and technology , but also should constantly absorbing domestic and foreign advanced manufacturing technology, focusing on the development of the design and manufacture application of advanced technology and digital processing technology, the use of advanced technology to improve detection means from the source of quality engineering machinery , so that Chinese construction machinery design, manufacturing techniques to a new level. At present, China 's construction  steel crane  product quality still has much room for improvement , there are a lot of infrastructure work to be done. Only through deep plowing of existing products to improve overall product quality, reliability and technical upgrading efforts. The second is to use existing technology technological development , construction and development to adapt to the modernization of mining engineering machinery , control of cutting-edge technology , the leading technology such as micro- control technology, control technology , voice technology , light-control technology , radar control technology, electromagnetic technology , sensor technology and satellite remote sensing technology used in construction machinery , so that the Chinese construction machinery to get rid of silly , big , rough situation. Chinese manufacturing enterprises should be bold to unmanned remote control and direction of development, from a global perspective of the development of construction machinery construction machinery facie a competitive market , will be a high-tech fight, who occupied the commanding heights Who to become the king of the war . Therefore, construction machinery R & D and high-tech manufacturing enterprises should attach importance to the ownership of the new technologies, new products, patents lies in their own hands. Third, from the efficient, environmentally friendly , energy-saving point of view , focusing on product development efficiency and low consumption , energy conservation will be late to an important indicator of construction machinery , construction  bridge gantry crane  industry so participants should establish this concept, construction machinery located in the on the basis of efficiency and low consumption , will be a highlight of the development , will bring substantial benefits considerable growth point , the next leader of construction machinery products is bound to preclude the use of emerging new energy -powered devices. At the same time must also consider the process of construction machinery in operation on the environment and personnel safety hazards , focused on solving the noise, vibration and dust of the key technologies to improve the safety of the equipment , the environmental pollution and hazards reduced construction workers minimum , the product of "people -oriented " is also an important criterion for the user to select products .

Construction machinery in the next 20 years of development of the "road map"

   First CTO Summit in 2013, vice chairman of China Construction  hoist gantry crane  Association branch chairman-cum-excavator Feng Peien "Chinese mechanical engineering technology development status, issues and trends - technology roadmap" as the theme to make presentations, report that :
Engineering the next 20 years to further develop the key issues. Commences listed is nine points, two design, seven manufacturing, in which a design was later removed, leaving seven manufacturing, so mechanical engineering technology: the first is the idea of complex electromechanical systems, modeling, optimization techniques, where the key is the modeling, modeling is the key to revision atomic structure, to conduct in-depth modeling, and not merely geometric kinematics, section II to VIII, precision molding technology, large-scale structure molding, molding technology accounted for two chapters,sino hoist and why it so pay attention to it, we found that the traditional processing are based on cutting, with the subtraction processing more than using molding methods, and now we promote the use of additive processing, greatly reducing material processing of waste and loss of energy. This is a sign of the development of the green, followed by introduction of high-speed precision machining technology, micro-nano devices and systems, intelligent manufacturing equipment, intelligent integrated drive technology, digital design, most of these are related with our intelligent. Therefore the green and intelligent direction of development in the field of eight engineering engineering technology has been fully reflected in our  overhead bridge crane  industry trends in extreme mentioned, the so-called extreme, that is, minimax, and extremely sophisticated, extremely high energy, this trend also in the technical field of eight projects have been fully reflected. Eight engineers determined that the next two decades our country has close relations project. These are the reasons for his important.

Development of construction machinery

    First, we now have the world's first mechanical manufacturing country, we began to pride, and we are just the world's GDP, but the real gold is not high enough. Our engineering machinery 70% by weight is made ​​mainly structural parts, 30% is imported. And construction  bridge gantry crane  for 70% of the profits flow to foreign countries is gone, we are left with 30%. Engineering machinery of the state reflects our entire national machinery industry technology development. Now our sales of 1.5 trillion, more than the United States, Japan, a few years, we'll import of the whole, but we are not power.
Second, our technical equipment has been a major breakthrough, the good news is our engineering machinery relative to other types of  overhead bridge crane  nearly a decade of development is particularly fast, it is worthy of our pride. However, this technique is not part of our major technological breakthrough, but also worthy of our consideration, like high-speed rail the same. Our technically how many of their own technology, by our innovative technology, we have over other people's technology, in addition to body weight than other people, other than the weight of more than more than others, this is also worth further reflection, we need to reflect further on foreigners are not to create not the biggest, or they do not want to consider a number of factors make the most of. These are worth further consideration.
Third, progress, structural adjustment, we got enough private enterprise development, effective contribution rate of over 50%. Foreign-funded enterprises with state-owned enterprises has also been a corresponding development.
Fourth, import and export, which is our pride,overhead gantry crane from deficit into a surplus, the surplus is growing, and we have imported or foreign sophisticated equipment, they do not pursue this export volume, they are reluctant to give a very sophisticated us, this is our attitude and the attitude of their differences.

Operating characteristics of electric hoist crane

First, work characteristics
More for vertical lifting and horizontal movement of lifting and transport operations.
Second, security features
While the majority of small and medium sized  hoist gantry crane  hoist lifting weight lifting equipment, special equipment, but still belongs to one of the safety of life, more dangerous equipment, the reliability and safety is particularly important in product design and manufacturing, installation erection, use and maintenance and safety oversight monitoring of the link must put safety and reliability in the first place.
Third, the operating characteristics
Hoist  steel crane  movements are one-dimensional motion, two-dimensional motion, three-dimensional movements and four-dimensional movements. Most of the three-dimensional movement, the left and right lateral movement in the X direction suspension load, longitudinal movement in the Y direction around the suspended load,overhead gantry crane vertically up and down along the Z-direction suspension load.

Tower crane which is the difference with other types of

Compared with other types of  overhead bridge crane  in construction are very different . The main differences are: tower crane has a high vertical tower , the upper part of the tower is mounted crane jib , jib crane slewing part can do together with a 360 ° rotation .

This unique structure of the crane generation , primarily to meet the needs of construction . As we all know , for the construction crane construction services , should have the greatest possible lifting height to accommodate various types of tall buildings construction needs . Secondly , I hope in the bottom of the crane boom , with a work space that can accommodate gradual build tall buildings , for high-rise buildings , the hope that the work space with high building construction increased in order to avoid the crane boom collide with the building elements and hinder construction . For this reason, in construction , tower cranes than truck cranes, crawler cranes applied more widely , as construction and installation engineering lifting a variety of building materials, components , equipment , tools, major construction machinery.

Any one tower cranes , regardless of their technical performance and structure , what is the difference , the total can be divided into three parts: the metal part of the working body part and the drive control system parts.

Tower crane metal structure parts are: the tower , the tower head or tower cap , lifting boom , boom equilibrium , slewing ring frame, chassis , trailer chassis and other major components account . For special tower  hoist gantry crane  , because the differences in structure , components also increase or decrease . A complete tower crane is a combination of these major components assembled together to form a whole. He was subjected to various workloads are functionally similar to the human skeleton.

Tower crane working body in order to achieve a variety of mechanical movement , to achieve the desired mechanical action and set up all the mechanical parts in general. For example, a performance of perfect self- climbing tower crane , often prepare the following working bodies : hoisting mechanism , luffing mechanism , slewing mechanism , traveling mechanism and lifting institutions. Some well as its variety of supportive institutions . Completion of the function of these institutions are: lifting mechanism to achieve goods rise and fall ; luffing mechanism to change the amplitude of the hook position ; slewing jib crane can do 360 reads rotation, changes in the level of work within the hook location, even in the stationary tower case can also hook the center tower crane slewing ring area as the center position in tune ; traveling mechanism so that the entire tower crane operation, change its operational sites ; top l institutions to make part of the tower  steel crane  slewing movements, thereby changing the working height of the tower crane .

Tower crane driving control system is another important component. Drives to provide power for a variety of organizations , the most commonly used for the YZR and YZ series AC motors. Control system and working mechanism drives the implementation of brake control , complete body starting, braking , speed control and redirect the work of the organization to achieve security monitoring, play a security role , and timely use of the work kinds of parameters displayed, let drivers know , be aware of when operating . Superior performance of a tower crane work , must be in good , safe, reliable, long-lived co-ordinated with the control system .

Development of tower cranes

Tower  bridge gantry crane   ( hereinafter referred to as tower crane ) with high efficiency , wide application , turning radius, since elevated high, easy to operate, resistance and easy installation and removal are more features, construction and installation works in our country has been widely use, and as a major construction machinery. In addition to tower cranes used in industrial and civil buildings , but in the power plant construction , water conservancy construction and shipbuilding sectors also often applied .
 
Always start with the basics of industrial and civil construction of a large number of remote layers of building materials to be transported from the ground to the top , the tower crane is complete vertical transport one of the most efficient lifting equipment . Since the tower crane boom mounted on the upper part of the tower , and higher buildings, so it can be installed near the building where it 's effective range is much greater than other hoist gantry crane s , lifting objects so as to direct lifting to the desired position has brought great convenience.

History of the development of tower cranes

In our country, the tower crane production and application of more than 30 years of history , has experienced a mapping from the design and manufacture of generic development process . In the 1950s, in order to meet the needs of economic construction , the introduction of the Soviet Union and the Eastern European countries tower sails. And for imitation . Imitation of the German Democratic Republic in 1954, the architect designed the tower crane type I and trial of China's first TQ2-5 type tower crane . Followed in order to meet power plant construction needs , has modeled on the Soviet -like sails, developed l 5t and 25t tower crane , the period of the production and use of tower cranes are small.
 
In the 1960s , China has entered a self- design and manufacturing stages of the tower crane . In 1961 , a successful trial of Red No. Ⅱ tower crane , which is China's first self-designed tower crane . It now appears that , although its performance is less than the current tower , but because of low cost, easy to use, until there is a certain market boast H . Subsequently, the country also is to design and manufacture TQ6 other tower in 1965 , the country has more than 10 manufacturers , producing tower  steel crane  over 360 units. This is the next time the Ministry of Walled tower crane rotating arm weapons , and can haul a whole , to meet the following six layers civil construction needs.
 
Since the 1970s , as construction needs, our tower crane into the technology improved varieties increased the new stage. 1972 for the construction of the Beijing Hotel , China is also the line design and manufacture of 1 60t · m 's just the type of self-elevating tower crane '1974 Yun Hotel Guangzhou from construction , but also to design and manufacture 40t · m of internal climbing tower from l machines, 1975 in order to meet the needs of infants and high-rise construction in Shanghai to design and manufacture zT-120 attached to the self- liter tower crane . These self-elevating , rotating on a horizontal jib tower crane trolley Empty parcels successful development ,sino hoist so that our tower crane production has entered a new phase. During this period , backspin tower crane new varieties QTl6, QT25, QT45 type. Some use a telescopic boom and folding tower structure, so that construction of the transport length shortened.

Construction machinery as strategic emerging industries need any breakthrough

  The State Council "on accelerating the cultivation and development of strategic emerging industries decision" that according to the characteristics of strategic emerging industries , based on China's national conditions and technology , industrial base , China has clearly there are seven major areas: energy saving, new generation of information technology, biology, high-end equipment manufacturing, new energy,bridge gantry crane new materials and new energy vehicles.
Strategic and emerging industries , refers to the major technological breakthroughs and significant development needs , based on the overall situation and long-term economic and social development have a significant lead role in promoting knowledge and technology -intensive, less consumption of material resources , growth potential, comprehensive benefits good industries.
According to the plan , by 2020 , strategic emerging industries accounted for the proportion of gross domestic product and strive to reach about 15%, from fiscal and financial aspects of a clear policy package to accelerate the introduction of cultivation and development of strategic new industries. Environmental protection, new generation of information technology, biotechnology , high-end equipment manufacturing industry has become a pillar industry of the national economy , new energy, new materials, new energy automotive industry has become a leading industry in the national economy .
Currently, the development of strategic emerging industry has become a hot topic of public attention . So, the construction machinery industry as a national strategic emerging industries What are the characteristics ? China's development of the actual situation of how what problems still exist obstacles to how to break ?
China's strategic emerging industry development as a whole is characterized by the development of faster , the overall proportion is very small, as of last year, the output value of strategic emerging industries to GDP ratio at about 4% . Currently, China's equipment manufacturing industry showed " big but not strong " development pattern , does not have the ability to lead the trend of world development , international markets have become increasingly grim situation facing the developed countries lead the front, developing countries are still playing catch-up phase.
It is understood that the United States in the year, the latest edition of the " National Innovation Strategy" made ​​to vigorously develop renewable energy , electric vehicles , biotechnology,hoist gantry crane space technology , nanotechnology and other six emerging industries, the European Union in 2009 introduced the " 2020 Wisdom sustainable inclusive growth strategy " , also clearly a similar new industry development plan . Japan, in its " 2020 Japan's new growth strategy towards the glorious ", also made ​​a similar development of key industries and technical objectives.
With the international and domestic situation changes , obviously, the development of strategic emerging industries facing great challenges. Construction machinery industry as a strategic emerging industries , in recent years, the rapid development of construction machinery industry has become more mature markets , business competition heating up, continue to promote the reform of the industry , but still faces several constraints point , need to break .
First, the lack of core technology to master , many of the core technologies dependent on foreign , which is currently China's construction machinery industry, especially high-end equipment manufacturing industry faces its biggest bottleneck. Must adhere to independent innovation, take the road to protect the development of national brand in competition with foreign brands break their own piece of heaven and earth . Secondly, the institutional mechanisms need to reform the current system is difficult to adapt to new industries. Explore new industrial development and promote high-end equipment manufacturing industry healthy and rapid development . In addition , the market is also impeded the development of strategic emerging industries a constraint points, which is a high-end manufacturing characteristics of the decision : First, high production costs , like the cost of solar power is a conventional thermal power 3-4 times ; two is the service facility requirements, such as new energy vehicles if there is no corresponding charging infrastructure , with the cars do not run up ; Third, market confidence bottleneck that made ​​something new out, consumers do not trust.
Recently introduced the " China construction machinery industry," second five "development plan " that promote the Chinese construction machinery industry from manufacturing power to create a power shift , the initial formation of a host of international advanced level products , basic technology, research and development and features manufacturing system .steel crane China Machinery Research Institute , former vice president Qu Xianming that China's equipment manufacturing industry should focus on industrial upgrading and the production-based to a service type , solid industrial base, solve the problem of slow development of infrastructure components , cultivate new industries , improve independent innovation capability. " From large to strong " is China's high-end equipment manufacturing industry development held by the philosophy, but only to play China's construction machinery industry cluster effect and brand effect , in order to embark on a unique path of internationalization .

Legend of the crane industry this year will be reborn

In 2012, the overall poor performance of the  hoist gantry crane  industry fundamentals, as the industry's strong cycle property, in the context of macroeconomic downside, weaker demand and overcapacity is the main reason for the weak performance of the industry. For the full year, revenue growth at a standstill, net income continues to decline. Share price performance, the industry index greater volatility in the first half, the second half showed unilateral downward trend appears near the end of a rally.

2013, the macroeconomic getting warmer, the estimated annual GDP growth of 8.3%. Overhead crane industry is expected in the fourth quarter of 2012 appeared to stabilize recovery features, the main sub-sectors or decreases in revenues and net income began to rise,sino hoist but the range is limited to improve the profitability of the industry as a whole is difficult to see significant improvement in the operating environment. Therefore, 2013 will be reflected in the machinery industry fundamentals low recovery.

Meanwhile, although the development of emerging industries is difficult to completely avoid the downside risks to the macroeconomic cycle, but the economic transformation of progressive long-term support for the emerging industry structure, macroeconomic moderate recovery in 2013, increasing frequency of new policies issued in the context of economic gradual transformation-related sectors will also be showing a good investment opportunity.

In the investment strategy, we recommend investors to grasp the industry low recovery and gradual transformation of the dual economic investment opportunities, promising to benefit from accelerated infrastructure investment, real estate investment recovery engineering overhead  steel crane   and railway equipment sector, the overall size of the industry still shrinking but in the short restart promote nuclear power equipment sector, as well as in the process of industrial upgrading has a prominent role in intelligent equipment industry.

China Heavy Machinery Industry Association Professional Committee of seventh bridge crane held eight meetings

Recently, the China Heavy Machinery Industry Association Professional Committee of seventh bridge crane held eight meetings . Meeting, the participants in the industry to jointly crane industry's future development countermeasures.

This reporter has learned that this year  bridge gantry crane   , gantry cranes market growth is still slow , the production is relatively concentrated area in Henan placanticline order situation declined , reflecting difficult for SMEs to receive orders.

Excess production capacity of the bridge , gantry crane , small belt too intense market competition , price war has reached a fevered pitch , especially small and medium bridges , gantry crane companies will face the risk of failure . Overcapacity in the industry, such as bridge , gantry crane industry to strictly control the licensing , payment of the renewal should raise the threshold , is conducive to promoting industrial upgrading and strategic corporate restructuring .

Market opportunities , strengthen the work of revision of standards , eliminate backward production capacity , is conducive to participate in international competition, and speed up access to the international market.

In recent years, focus on the development of the industry on the bridge , gantry crane is very limited demand , coupled with a substantial increase in industry capacity in recent years , the market soon appeared to fall.

Currently crane machinery industry, medium-sized enterprises operating in good condition , but some smaller businesses suffered severe shocks. Eliminate some of the competition is not strong small businesses, conducted a reorganization and integration of the industry is advantageous . Performance of the  overhead bridge crane  has become an important part of automated production processes , companies can open innovation in the service profit source . You can also take advantage of the timing of foreign enterprises operating difficulties , some companies have chosen acquisitions . Chinese crane manufacturing industry is undergoing a huge change.

Some of the leading companies in the industry, the introduction , digestion and absorption of advanced industrial countries of similar products technologies and new ways to promote the application of optimal design, the modular design , general development, with a minimum of parts , and satisfy the needs of users ; product is to automation, intelligence and information technology development , to complete , systematic and large-scale development , to large , efficient and energy-saving technology development , the development of special  overhead gantry crane  to meet the requirements of product diversification , the development of human relations aspects of the product is reasonable, shape, surface painting and other visual quality ; effectively improve operational efficiency and operational safety.

Automation equipment manufacturing industry began to transition direction

Transformation of global industrial production under the tide of industrial production gradually shifted automation equipment manufacturing sector also started in this direction transformation.

" Twelfth Five-Year Plan" that should accelerate the development of high-end equipment manufacturing industry .hoist gantry crane On the field of motion control , the high-speed, high-accuracy will undoubtedly be used in high-end manufacturing equipment and precision instruments above . Projected to 2015 , China's motion control products market will reach 11.302 billion yuan .

China 's equipment manufacturing industry is at a critical period. On the one hand the sustained, rapid development , requires a lot of technical equipment ; other Chinese equipment manufacturing technology level is not high , irrational industrial structure, policies imperfect, can not meet the needs of national economic development , resulting in a lot of technical equipment imports situation. In the context of economic globalization , a country can not be taking all the necessary equipment in the country , but there are 1.3 billion people as a socialist country , industrialization and modernization can not be bought from abroad , but also can not afford , must be through the development of equipment manufacturing industry to achieve industrialization , and only a strong power equipment manufacturing industry to become industrialized .

Currently , the traditional equipment manufacturing industry is facing serious capacity expansion , industry demand slowdown trend. Overall manufacturing sector face greater pressure. Join in the traditional manufacturing automation and information technology concepts and gradually began to become focused attention and research directions.overhead gantry crane Currently the field of traditional equipment, lower valuation , and some enterprises to intelligent automation product transfers may be one of the characteristics of industry inflection point . Currently include engineering machinery, material handling machinery and large general machinery are beginning to actively automation, intelligent field extension .

Equipment manufacturing industry development trend , first complete automation production lines, including large-scale ethylene , PTA automated production lines of large systems integration, large-scale coal chemical industry, production of liquefied natural gas storage , automation of key equipment, long distance transportation of natural gas , as well as large-scale coal mine integrated automation mining equipment, automation equipment and other large open pit mine . This also is the thermal value of the tester industry development has brought opportunities.

In addition, critical infrastructure , including spare parts, components and common components , intelligent dedicated equipment , intelligent control systems , high-end CNC machine tools and basic manufacturing equipment , high-speed, precision, complex CNC metal cutting machine tools, heavy-duty CNC metal cutting machine tools, CNC special processing machine ,overhead bridge crane large CNC forming stamping equipment, sophisticated and smart instrumentation and test equipment. These will be the market requirements , the development direction of China's equipment manufacturing industry .

Gantry crane industry in the next 20 years will continue to develop steadily

In the new stage of economic development,hoist gantry crane the Chinese economy as a whole, and Chinese enterprises are facing industrial upgrading, overcapacity two major challenges in the short term to prevent risks, improve anti-market shocks; medium term, through technology, products and business model innovation, reshaping the basis of the competitiveness of enterprises, by upgrading the access to new markets; on the institutional aspects, in order to strengthen the company's strategic and policy-making institution-building.
Chinese products of domestic enterprises with foreign brands products, product reliability, durability gap is narrowing, which is fortunate situation. Second half of 2011 to the end of 2012, this time the engineering  bridge gantry crane  industry gantry adjustment period is a good thing for the industry to adjust, so that the entire industry can be thinking seriously about how to face the adverse situation, how hard skills, positive development issue.
With the two sessions, the state policy of steady growth will gradually pulling, 2013 optimistic about the situation of the industry as a whole. Of course, the industry should return to the previous level in 2011 is still very difficult, the next 20 years, gantry crane industry will have good prospects, the industry will continue to develop steadily, ups and downs of the phenomenon will be rare.
China steel crane  industry has about highlights: First, from a global perspective, tamping the foundation, attack high, strong management. Second, national policy support, major key components imported duty-free, the key hydraulic components collaborative platform construction, business transformation projects progressing smoothly. Third, the rapid progress of the industry to the inventory. Fourth, the momentum of rapid productivity growth was suppressed, corporate expansion momentum slowed, industry rebound signal enhancement. Fifth, the international market is expected to grow.
High-end equipment manufacturing, to big to say, a symbol of a country's core competitiveness, involving the country's economic and national security; talked to the small, many industries and businesses related to the survival and development.

Excavators, cranes and other products in the first quarter sales were down about 20%

Since the second half of 2012, subject to the impact of falling real estate investment growth, steel crane concrete machinery sales began to decline until 2013 a quarter has not improved. From sales data, excavators, cranes and other products in a quarter, about 20% in sales volume decline. Sluggish downstream demand, accounts receivable bad debt problems of the company tightened conditions of sale, profits are at a greater impact.
However, overhead gantry crane after entering the second quarter will accelerate investment in infrastructure, two quarters of recovery is expected to remain the industry. March 2013 to excavators, loaders,overhead bridge crane represented by sales of construction machinery product range has been narrowed down to about 5%. 2 quarter, with investment in infrastructure and the market is expected to accelerate the improvement of growth in sales of construction machinery is expected to remain.

Cellular beam bridge machine is how it works

  On the highway, highway bridge machine generally used to complete the erection of the bridge , the current HZQ cellular beam bridge erecting machine is a new device , the bridge machine has obtained national patents,overhead gantry crane especially for small space beam field , using subgrade beam field of engineering . Daily stand four beams , enabling reverse bridge , a significant reduction in construction costs and construction cycles.
    Erecting machine installation is complete, check the functioning of the institutions , subject to normal after the main beam leveling , while the transport and haulage vehicles precast beam girder erecting machine reaches the end , ready vias ; cause outrigger cylinder , placed firmly , so that the main beam elevated appropriate location , and then insert the pin in the casing , the legs ( with sliding rails ) rely on their own hanging forward 50 meters in place, will be in the legs and sliding down the track pad solid ; front legs cylinder by force, the pin out , and the whole drop , fall in the main beam and the rear leg bracket idler wheel, the front and rear lifting the legs open to the vicinity of the car , and the rear legs startup bracket roller mechanism , so that the main beam forward 20 meters , before lifting the car move backward 20 meters synchronized ; recovery tank rear bracket so vacant, hanging on their own bodies ( without power ) forward 30 meters , will be in place after the flat bracket and insert the pin ; then recovered after the outrigger cylinder so vacant, both before and after the lifting trolley to move the tail ; startup outrigger and rear bracket roller mechanism , so that the main beam forward 15 meters , before lifting trolley sync moving backward 15 meters ; then after lifting trolley continue synchronizing backward to the main beam ends, while transporting girder vehicle checked precast beams in place, after lifting one end of the car lifting precast beams and securely connected as a counterweight ;hoist gantry crane startup charged legs and rear bracket roller mechanism , so that the main beam forward 15 meters , so that the front legs in place and lifting, so the top to the front axle support platform to meet the requirements of girder , and then check the machine agencies, for aircraft beam preparations.
    When erecting edge beam : the edge beam position put to the side two , falling edge beam and support, then remove the spreader ; erecting machine reverse lateral displacement of the center of the outer edge of the main beam beam center vertical ; lifting trolley movable pulley upgrade outward sliding , and then two pulleys ride unilateral main beam fall, connected with the original lifting beam ; lifting trolley hoist upgrade, lift edge beam outward sliding , falling beams in place.
    At this stage, usually walking bridge machine bridging machine that bridge machine vias , without laying diversion track , eliminating the tracks of the material , reducing the labor intensity , except for the first hole needs another tire beam carrier girder with through-hole ,bridge gantry crane and the remaining span bridge machine can rely on their own institutions to achieve self-balancing vias .

Lifting machinery industry has gradually become automated enterprise market should not be overlooked

According to statistics, in recent years, lifting and transport equipment manufacturing industry maintained an average annual growth rate of over 30%, even in 2008, after the financial crisis hit in 2009,steel crane has also been a rapid recovery. Meanwhile, the lifting machinery industry's rapid development has greatly facilitated automation products in the industry application. While China's machinery industry automation applications lifting the overall level is not high, but neither the manufacturer of lifting machinery or lifting applications users have come to realize the advantages of automation products. China Academy of Building Research Building Mechanization Research Branch Technology Center Director Luo Wen said in an interview, the lifting machinery industry automation products application potential is very large,hoist gantry crane very broad prospects, rotary kiln so that domestic crane automation market development will follow The "explosive." Both cities to develop more mature and modern form of trends or economic crisis, the state infrastructure investment on the irritant, Chang said the lifting machinery are booming. From control to drive and automation products in this industry are increasingly accumulated depth applications. From the existing scale for future growth and the current growth rate,sino hoist lifting machinery industry has gradually become automated enterprise should not be overlooked in the market.

Crane constrained by the drive difficult to meet the special requirements of developing

Lifting and transport equipment as the national industrial production of special equipment, widely applied to various industries, with the industrial production of the crane speed performance requirements continue to increase, the  steel crane  speed control method commonly used traditional wound rotor induction motor due to its collector ring and brush prone to failure, along with a large number of relays and contactors are used, resulting in a large amount of on-site maintenance, speed control system failure rate is high, comprehensive technical indicators are worse, has been unable to meet the special requirements of industrial production.

In recent years, with the continuous development of inverter technology, inverter performance and increasing the mechanical properties of hard-frequency control, speed range, speed and high precision, good stability, easy to control and energy-saving features, can well meet lifting equipment safe and stable, reliable, good operability reliable,hoist gantry crane maintenance requirements, rapid breakthrough in the crane industry and widely used.

Currently, in many inverter brands, can fully meet the needs of lifting products industry characteristics are not many, the main difficulty is due to the particularity of the crane, crane drive must have some special properties: fast dynamic response, in order to meet the crane dramatic changes in load demand; wide range of speed control, the speed can cause the motor output segment around 2 to 3 times the rated torque of the torque output of the peak; can withstand dramatic changes due to the potential energy of the load current impact and guarantees appear in a continuous and reliable operation of mechanical vibration environment; decelerating the motor during braking can be reliably released renewable energy, as the current capacity of the brake unit to be larger; protection system with high reliability, for the lifting mechanism, the need to pay particular attention to mechanical after the brake is released immediately before or brake to prevent the "slip hook" of the control;bridge gantry crane possess powerful monitoring system, through the monitoring of implementation of various parameters of the system failure alarm and failure analysis.

China large tonnage crane market is narrow avoid blindly seek large

In recent years, China's crane industry in the field of technical research made a series of admirable achievement. Indeed, China's  bridge gantry crane  industry started later than in developed countries, but as China's economy continues to develop, machinery and equipment manufacturing industry continues to progress, the level of the crane manufacturing industry, now more mature, and in technical fields have multiple independent innovation intellectual property rights. At present, China produced only in the domestic construction cranes play a huge role, but also active in the international construction arena, Chinese manufacturing has become increasingly recognized by the world.

Our large tonnage crane crane industry in R & D and manufacturing in recent years has made a major breakthrough in this field has been at the international forefront, which also represents China's construction machinery industry in technology and on a higher level. In addition to the crane industry R & D production personnel tireless efforts, and this is thanks to our national policy for the development of large-tonnage cranes for their support and encouragement. At present, the domestic large-tonnage  overhead bridge crane  have been out of the country, received worldwide attention.

However, because of its large tonnage crane tonnages level, work efficiency and load-bearing capacity, suitable only for national water conservancy, power plants and other large-scale construction projects are generally custom made according to project needs. Our 2010 production of five years large tonnage cranes, there are four units for nuclear power plant construction. As we all know, last year, a 9 earthquake in Japan, the Fukushima nuclear crisis erupted, also caused the country for the construction of nuclear power reflection. Fukushima nuclear crisis caused great harm, affecting scope, extend the length of time so that the public feel more fear for nuclear power plant construction. Shrouded in clouds under the nuclear crisis, there have been many countries due to security considerations have slowed or even to give up nuclear power construction plans.

Countries are faced with slowing construction of nuclear power program, in the production of large tonnage crane will also enter a cooling-off period. Although large tonnage crane margins high, but low yields, the market demand is also low, so the proportion of overhead gantry crane  market is not great. Our cranes for large tonnage crane companies do not have the blind pursuit of technology in active exploration, they should also take advantage of market demand, so as to enable products to better serve the crane construction services.

Summer season is not the most severe

In 2012 more than half the time, now is the summer season, but also in Heilongjiang crane production operations the traditional peak season. Come summer, Heilongjiang  sino hoist  market situation did not improve, the first quarter of this year and next year the situation is more optimism. Heilongjiang crane market is not in the harshest of the summer season. According to the current situation, it can be concluded that the 2013 Chinese New Year period, Heilongjiang crane market will face more severe financial pressure.

There Heilongjiang crane market analysis by authorities said that currently, the construction machinery industry low down payment zero down payment cumulative risks are individually detonated.hoist gantry crane Some sharp implement low down payment zero down payment brands, are braving the winter eat the bitter fruit market.

Currently, the construction machinery market in the summer experience winter, the brand continued market agents bear high pressure, but intense competition in the market does not cool. Zhao star believes that the market in general is bad, should more quality services to root out the market, deep market in order to better service to win a good market. To do when the market is good, the market is not good when you have to visit customers, run the market, to prepare for the market upturn.

Market has its own operating rules. The competition between brands, not because of market experience winter and cooling, but will be more heat reclaim. At present, Heilongjiang construction machinery market structure has not yet appeared a big change, but in the economic boom of the downturn, the construction machinery industry reshuffle in the offing. Especially the lack of capital, technology, marketing, and service capabilities of SMEs, will be difficult to get through the winter.steel crane Wei Hongbing also said that with the construction machinery big market adjoining Heilongjiang Agricultural big market, the first half of households have been withdrawn from the market maker. This is the economic boom of the decline, leading to the inevitable result of deteriorating market conditions. Everything pros and cons, but also to the economic slowdown of economic structural adjustment, survival of the fittest to create a work space. Experienced winter construction machinery market will usher in new opportunities for healthy and sustainable development.

Zero down payment finance "tonic" to "poison"

Prior to 2009, Heilongjiang steel crane  market healthy and orderly development. But entered in 2009, to seize market share, some brand manufacturers spearheaded low down payment zero down payment sales offensive. A low down payment zero down time financial "Lotto" conquering big gains. Into 2010, the market competition is more intense, the face of financial "Lotto" the temptation, most domestic brands are successively follow-up are also part of a joint venture brands. Finance lease, mortgage banking financial leverage limits are super zoom, 10% less popular low down payment zero down payment, accounting to certain brands since 2010, over 60% of market sales. Kind of argument is that sold four cars to buy cranes, excavators opened tractor to raise. Therefore, a serious decline in the proportion of high-quality customers, irrational purchase customers increased significantly. Unhealthy competition, seriously disrupting the market, the manufacturer accounts receivable, inventories increased significantly, hoist gantry cranedealer profits bottomed out, difficult to balance income and expenditure, the crane user did not live dry, non-profit-making, repayment difficult. According to the survey, the first half of 2012, the stock of cranes in Heilongjiang usage below 30%, rents fell by more than 30%.

Heilongjiang, deputy general manager Liu Yuehua this spring that because the purchasing power of potential construction machinery was severely overdrawn, the market is constantly blowing big bubbles, cranes ownership is much higher than the actual market demand. With low down payment zero down payment as a financial "tonic" of construction machinery market has accumulated a huge risk, financial "tonic" has become a financial "poison."bridge gantry crane This is not alarmist, and its toxicity is moving from downstream to upstream industries to pass, and has been the weak link in the chain of funds first attack. Enhance the sense of crisis and prevent market risks, market participants should become a priority.

Sales decline of economic air mass harassment Heilongjiang crane market

It is reported that, due to the world financial crisis and the Chinese economy after the recent downward pressure on the few harassing, China's Heilongjiang Province,  overhead bridge crane  market is currently suffering unexpected predicament. According to the survey, the first half of 2012, Heilongjiang Province, crane sales volume decline more than 70% year on year, a considerable part of the brand sales fell more than 90 percent.

According to the market survey, in June 2012 in Qiqihar City, Heilongjiang, such as living on the street every day dry cranes have more than 100 vehicles. And this time last year only 10 or so; every day on the street in Harbin and other live dry crane, the total holdings of more than 30%. Throughout the first half of 2012, due to economic cooling trend, Heilongjiang  hoist gantry crane  users monthly repayment pressure increase, the pressure on, harder to bear than in 2008.

According to the pundits predicted, the second half of 2012, Heilongjiang Province crane market situation does not improve. Because Heilongjiang affected by the winter cold, the construction season is only half a year or so. Once in the autumn and winter, is the macroeconomic improvement, it can not change Heilongjiang  overhead gantry crane  market less work to do, did not live dry situation.

Heilongjiang Province, Marketing Manager Wei Hongbing large construction machinery, construction machinery market in Heilongjiang have a deeper insight into the trend. Wei Hongbing that Heilongjiang remoteness, industrial and transportation at the national strategic layout in a relatively minor role; Heilongjiang rich agricultural resources, but in recent years the state has increased efforts to support agriculture in the province. Heilongjiang engaged in the marketing of construction machinery, engineering machinery investment operations, we must grasp the characteristics of Heilongjiang construction machinery market, both eyes staring at the city market, but also aim at the rural market. Appears on the current construction machinery "closed car" phenomenon, Wei Hongbing said repayment tardiness led manufacturers to "close off" the parties are unwilling to see, unavoidable outcome. This situation in Heilongjiang still sporadic state. Whether manufacturers or finance lease, mortgage loan customers so reluctant to take this step, are trying to avoid such a lose-lose situation. Wei Hongbing also analyzed that these sporadic cases, since 2011, mainly in the low down payment and zero down payment car customers, the impact is limited. It is noteworthy that the recent national macro-control efforts stepped up to the market release of "firm growth in a more important position" clear signal. Stable economic growth, only to avoid a larger area funding strand breaks happen.

How can we make way for tower crane safety benefits of frequent accidents sentence analysis and countermeasures

Construction safety accidents, casualty rates have been far higher than other industries, the average level,overhead bridge crane which has caused the government departments, the community and the people's attention, security has been elevated to a new height. "People-oriented, cherish life" concept is integrated into the social construction safety management, reflecting the community's respect for human life, is an important manifestation of social progress.

At present, China's growing scale infrastructure construction, construction workers, more and more, and our construction safety management level has been at a low level,overhead gantry crane which makes the situation even more grim construction safety management state.

In the construction safety accidents, tower crane accident frequency is a commonplace problem, partly because it is related to social stability and the lives of staff and the state property of the event; partly because the occurrence of major accidents, live Ministry of Construction, the State Administration of Work Safety reported each year and the corresponding security checks,sino hoist but still every year after another.

Tower crane solve the problem of frequent accidents, relying on national authorities and enterprises at different levels to develop appropriate rules and regulations, and improve the quality of the tower crane is not enough, you also need deeper thinking solutions.

Mining and technical personnel sought when the crane operator were 54.6 Australian dollars

As the saying goes, time is money. Your one hour worth? If you are in Australia when the anesthesiologist, then the value of your one hour 124.1 million. Australian Bureau of Statistics (ABS) 19 announced the 20 kinds of occupations with the highest hourly rate, in addition to people familiar with the dentists, lawyers, engineers and other high-paying career, but there are many on the list unexpected career as cranes,  bridge gantry crane  and lift operators and train drivers.

List shows, mining-related technical jobs are still sought after. Mining Engineer (A $ 65.5 hourly), natural gas, petroleum operator (63.9 hourly AUD), geologist points out the fifth, sixth and ninth. Cranes,  hoist gantry crane  and lifts the operator at an average hourly wage of A $ 54.6 Beyond Civil Engineers (53.9 hourly AUD), ranked No. 16.

Construction, forestry, mining and energy union (GFMEU) Dave Noonan said that the person in charge, cranes, cranes and lifts operators engaged in high-risk job, "needs work under great pressure,steel crane you need to master the skills, otherwise it will give themselves and their colleagues' health and safety at risk, and even harmful to the public interest. "

Wuhu will construction crane filing system

In recent years, with the construction of Wuhu City, Anhui Province, carried out large-scale construction crane at a construction site more widely used.sino hoist In order to prevent and reduce the occurrence of safety accidents, recently, Wuhu City construction and management regulations, since July, within the city limits QTZ40 type tower crane installation height control at 11 and not more than 36 m layer below.

The building site is currently used in Wuhu construction crane up to 3000 sets. Construction and management in accordance with the latest requirements, Wuhu will construction crane filing system, to grasp the basic dynamic, required to perform construction crane rental units must have a fixed office space in Wuhu, Wuhu imported into the enterprise is required to set up branch offices,hoist gantry crane and must meet the requirements of venue rental services and special operations personnel.

In addition, given QTZ40 tower crane accident rate, low safety factor, Wuhu regulations will gradually phase out restrictions on the use, since June this year, Wuhu city limits QTZ40 type tower crane installation height control on the 11th floor and does not exceed the following 36 m. Useful life of more than a certain tower  steel crane  safety monitoring equipment must be installed; material hoist using highly controlled at 11 floors below and not more than 36 meters. And construction material hoist elevator floor stop door interlock device to be installed and the floor call system and weight limiter, installation of mechanical equipment shall not be put into use; heights job basket before use, shall be subject to inspection testing organizations qualified before put into use without detection or unqualified not be used.

Ensure that the building crane safety produced several hurdle

Crane safety how to protect? As important a content site safety, crane safety at stake. Reporters learned that this year August 1 onwards, Shunde District, Foshan City, Guangdong Province,overhead gantry crane the new installation and construction crane being used, must be implemented for the first time supervision and inspection, supervision, inspection and periodic inspection cap to ensure the safety of the construction site.

In order to regulate the region's housing construction and municipal engineering crane statutory inspections to ensure that construction crane at the site of the use of safe, according to the "Regulations on Safety Supervision of Special Equipment", "construction safety regulations,"hoist gantry crane the relevant provisions, Shunde district decided to be included in the "special equipment directory" construction crane statutory inspections carried out standardized management.
Crane safety how to protect? As important a content site safety, crane safety at stake. Reporters learned that this year August 1 onwards, Shunde District, Foshan City, Guangdong Province, the new installation and construction crane being used, must be implemented for the first time supervision and inspection, supervision, inspection and periodic inspection cap to ensure the safety of the construction site.

In order to regulate the region's housing construction and municipal engineering crane statutory inspections to ensure that construction  overhead bridge crane  at the site of the use of safe, according to the "Regulations on Safety Supervision of Special Equipment", "construction safety regulations," the relevant provisions, Shunde district decided to be included in the "special equipment directory" construction crane statutory inspections carried out standardized management.

Tower crane hazards are frequent

In the construction safety accidents, tower  steel crane  accidents, risks are not absolutely be a commonplace problem, partly because it is related to social stability and the lives of staff and the state property of the event; partly because the occurrence major accident, the Ministry of Housing, State Administration of Work Safety reported each year and the corresponding security checks, but still every year after another.

Solve tower crane accidents,bridge gantry crane hazards are frequent problems alone national authorities and enterprises at different levels to develop appropriate rules and regulations, and improve the quality of the tower crane is not enough, you also need deeper thinking to solve approach. In addition to policy what else, if we can put aside the GDP-oriented,hoist gantry crane it has good policy.

Local government policies, to carry out rectification activities tower crane

In order to rectify the illegal construction tower crane, local remediation policies have been promulgated norms,overhead gantry crane but most of the rectification effect can only maintain days half, then the government has introduced policies to.

Fujian to strengthen the construction crane safety supervision and management to ensure the leasing, installation, removal, use, repair and maintenance all aspects of management in place, clear responsibility, to prevent the production safety accidents, last year, Fujian Province, and try to push the proposed building from heavy machinery "integration" management model. Fujian Province, the construction crane "integrated" enterprise made basic requirements: personnel, equipment and maintenance base is the construction crane "integration" the most important basic conditions.overhead bridge crane Enterprises should have no less than 4000 m2 maintenance base, and has at least two sets of maintenance and testing equipment. Leasing companies can provide its own construction crane shall be not less than 80 units, the device should be good technical performance, quality, stability, security, protection devices, sensitive, reliable, brand is relatively fixed, not multi-vendor, multi-brand, easy to manage, and the establishment of safety equipment files, so that "a machine one file" to strengthen professional staffing. Technical director, machine management staff, security staff, installation and removal, maintenance workers, etc. are construction crane company's core technology, taking into account the management and equipment installation and removal operations radius of the actual needs, Fujian requires 80 units per building Lifting engaged in construction machinery shall be equipped with professional engineering and technical management staff at least 15 people, four people full-time security staff, local management staff 5 people, 15 people work installation and removal, maintenance man seven people, construction electrician three people and are equipped with corresponding construction crane drivers and signal cable company workers.

Lanzhou City in order to effectively solve the construction collapse multiple, frequent outstanding problems, combined with the actual work of construction safety in Lanzhou, the Urban Construction Bureau has decided from now on to continue the work of preventing construction crane scaffolding collapse rectified. In equipment and construction management, with emphasis on lifting machinery and scaffolding the use and management of the following situations will be strictly remediation, namely lifting machinery installation, disassembly, inspection units without qualification or super-qualified jobs, lifting machinery Failing to test or test failure is still in use, registration, inspection, use, and maintenance of lifting and other procedures carried out or failing to develop programs for approval,sino hoist as well as crane drivers, signal workers, Secretary cable workers certificates and other special operations personnel are not in place; scaffolding erection, use, personnel certificates do not meet requirements, erection of scaffolding is not to develop programs and approval, steel, fasteners approach does not test or test failure, especially Attached lifting scaffold for the record, erection, lift, use, inspection and other aspects do not comply with the relevant provisions; deep excavation construction plan preparation, review argumentation, excavation, temporary edge protection, deformation monitoring implementation is not in place.

Multiple policies favorable construction machinery industry, the potential demand is released

Recently, the machinery industry secondary market performance last week, the CSI 300 Index fell 3.7 percent,hoist gantry crane the machinery industry index fell 2.1 percent, down slightly less than the overall market decline. Year to date, the overall machinery industry performance index and the market index was essentially flat, where metal products, instrumentation, boiler equipment, machine tools, lifting and transport equipment, and textile and garment machinery outperform.

     Downstream from the data, in June, the total coal stocks fell 2.8 percent, natural gas production increased by 8.2%; June highway passenger volume increased by 4.9%, road freight grew by 12.1%, the nation's major port cargo throughput up increase of 10.5%. Import and export, May,steel crane excavators total export volume grew 22.3% year on year single month export volume increased by 3.4%; bulldozers total export volume increased by 8.4%, rollers total exports volume fell by 8.1%, total export volume fell crane 33.3%, forklifts total exports rose 17.7% in the number. June, lathes export volume fell 12.9 percent, milling machine export volume rose 4.2%.

     In addition, policy support demand driven agricultural machinery agricultural machinery, the central document for ten consecutive years Focus "three rural" enough to appear government support for agriculture determination. At the recent State Council promulgated the "State Council on financial support for economic restructuring and transformation and upgrading of guidance", once again clearly will increase the "three rural" areas of credit support. Among them,bridge gantry crane for the first time clearly encourage banking institutions to carry out exploration and medium-sized agricultural machinery mortgage pilot. Credit policy to support the further release of the potential market demand for agricultural machinery, including the New Territories Pump including agricultural producers will benefit.

Construction machinery industry: improving margins

    The latest National Bureau of Statistics data show that the special equipment industry profit margins steady rise in income among an improvement. We believe that the profitability of the industry is due to the recovery of investment in fixed assets during transport acceleration.overhead bridge crane Although the equipment industry showed signs of recovery signal, the market for the industry's major manufacturers still have concerns the quality of earnings.
Special equipment industry earnings recovery. The latest National Bureau of Statistics data show that in the first four months of specialized equipment industry (including construction machinery manufacturers and coal machinery manufacturers) of revenues and profits continued to recover. During the period, the industry's revenue grew 10.40 percent, an increase of 10.08% compared with the first three months has accelerated. The first four months of year on year decline in industry profits from a quarter narrowed to -11.40% from January to April of -2.10%, from one-quarter profit rose to 5.58 percent from January to April to 5.97%. We believe that the profitability of the industry's recovery is due to transport of fixed asset investment accelerated. First four months of transportation growth in fixed asset investment up 22.0% from a quarter from January to April rose to 23.7%.

     Concerns the quality of earnings.overhead gantry crane Although special equipment industry showed signs of recovery, the market for major manufacturers within the industry cash flow and quality of earnings still have concerns. A quarter of the total trade receivables turnover days were 74.04, 68.11 over the previous year increased. Recent rumors on the market so that investors Zoomlion sales data's credibility into question. Subsequently, Zoomlion A shares and H shares traded in May 27 is suspended.

     Will be more emphasis on cash flow management. In the early stage of recovery equipment industry, we believe that the market will pay more attention to the quality of earnings reflect the operating cash flow.steel crane In order to control credit risk and enhance operating cash flow in the short term machinery manufacturers will continue to tighten credit sales.