Tower Crane Model labeling

At present, China's construction tower  steel crane  parameters, the general reference to JG/T5037-1993 "tower crane category" standard for classification, its operating parameters shall not be less than the standard requirements. Performance parameters tower crane tower crane direct impact on production costs, the better the performance the higher the cost, of course, higher sales prices and rental costs. Greater impact on the main parameters are: rated torque, maximum working range, the most significant from the weight, maximum weight, independent and attached working height and working speed.
The model is based on the preparation of the crane rated torque as the main parameters to be defined in order to QTZ80 example as follows:
QTZ80, which represents self-elevating QTZ tower crane, 80 the nominal lifting torque 800kN · m (basic arm and the corresponding nominal weight of product) divided by 10. However,sino hoist due to the impact of imports of tower cranes on the market have a new kind of model identification method, the maximum arm length (m) and the arm end (most significant) that can be lifted at the nominal weight (kN) two main parameters mark tower crane models, such as QTZ80 identified as TC6010, TC5513. Although this labeling method does not meet our national standards, but very directly reflects the tower crane lifting performance, currently used more.hoist gantry crane At the time of purchase and selection of tower crane, you should understand the relationship between the two representations of its lifting torque curve is relatively serious.