Promote the development of tower crane drive

Boom tower crane is mounted on the upper rotating tall tower crane, which working space is mainly used for housing construction in the vertical and horizontal transport of materials and construction of the mounting member. The main institutions tower crane hoisting mechanism,hoist gantry crane luffing mechanism, trolley traction mechanism, slewing mechanism and so on.

Since the 1980s, China's tower crane industry has been rapid development in recent years, the tower crane sales continued to climb. But can not be ignored is the model more concentrated, competitive market pressures, it is not conducive to development of the industry, which requires a series of reforms. Meanwhile, uneven product quality, market access restrictions are not strict. As a "tower crane" GB/T5031-2008 standard editor Luo Wen-director has deep feelings, he said, the new standards, expanding the use of standard, easy with international standards. Some institutions also added requirements, safety devices, technical data requirements and so on. This will to some extent,overhead gantry crane for domestic products in international competition heavier chips.

He also pointed out that most of our tower crane tower crane are SMEs, as most small and medium sized tower crane's overall cost is not high, such as the use of inverter, PLC and other automation products, it will significantly increase the cost of the cost, so the resulting current tower machine industry automation products application ratio is very low. Overall tower crane market, inverter application ratio is about 11.2%, speed approach to the dual speed / multi-speed motor control or series resistance speed based. Currently inverter tower crane companies has been generally recognized,overhead bridge crane a large tower crane basically applied frequency, medium-sized machine is also a considerable part of the tower using the inverter, but a small tower crane application level is still very low, most of the use of double speed / multi-speed motor control or series resistance speed mode. Luo Wen stressed that the development of large-scale tower crane trend will further promote the application of inverter and other automation products,sino hoist while small tower crane market development potential for the inverter provides a great space for development.