The embodiment of the invention provides a crane lifting mechanism braking system and a control method, the system at least comprises an encoder, a lifting mechanism motor, a brake, a speed reducer and a frequency converter, the frequency converter is respectively connected with the encoder and the brake, and the lifting mechanism motor is connected with a weight through the speed reducer; the encoder is used for measuring the position and speed of the lifting mechanism motor; the brake is used for controlling rotation and stop of the lifting mechanism motor; the frequency converter is used for outputting three-phase voltage through a wire to control a motor of the lifting mechanism to ascend and descend or keep a heavy object still, a protection mechanism can be added only by judging that a brake fails and adding specific software processing logic when power is off, major safety accidents are avoided, cost is not increased, and more protection is achieved.
本发明实施例提供了一种起重机提升机构制动系统及控制方法,该系统至少包括:编码器、提升机构电机、制动器、减速机和变频器,其中,变频器分别与编码器和制动器相连,提升机构电机通过减速机与重物相连;编码器用于测量提升机构电机的位置和速度;制动器用于控制提升机构电机的转与停;变频器用于通过导线输出三相电压控制提升机构电机提升、下放或者保持重物不动,只需要在判断出制动器失效,且断电时增加特定的软件处理逻辑,就能增加一道保护机制,避免重大安全事故的发生,不增加成本,多一道保护。
Crane lifting mechanism braking system and control method
一种起重机提升机构制动系统及控制方法
2022-12-09
Patent
Electronic Resource
Chinese
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European Patent Office | 2021
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