L68A1 Mast Section Introduction of lifting mechanism of tower crane accessories
The tower crane accessory that makes the tower crane lift the most important weight is the tower crane lifting mechanism, which is the mechanism with the largest power among the three mechanisms of the tower crane, mainly composed of motor, reducer, brake, frame, etc. its performance and quality directly reflect the performance of the tower crane.
First of all, let's understand the motor part of the jacking mechanism - the type and quality of the motor used in the tower crane determine the lifting performance of the tower crane. At present, the widely used lifting motors are: multi speed motor, winding motor, frequency conversion motor. Its performance and price are increasing one by one, and the quality and price of the same type of products vary greatly with the process of different manufacturers.
Next, it is the indispensable reducer in the parts of tower crane. At present, the tower crane mostly adopts multi-stage cylindrical gear reducer. However, due to the fierce market competition, the business philosophy of different enterprises is different, and the production process adopted is different, so the quality and price are very different. According to my understanding, in order to meet the demand of low price in the market, some reducer factories do not conduct heat treatment and surface treatment at all for the gears. In this way, the performance of the products can not be guaranteed at all, the service life is greatly reduced, and there will be a lot of noise soon.
In addition, the reliability of the tower crane brake in the lifting mechanism also directly affects the safety performance of the tower crane, and the selected manufacturers deserve attention. The main function of the frame is to provide physical support for the lifting mechanism, which is similar to the metal structure of the tower crane.
