A lifting mechanism anti-shock control system and control method

Abstract

The present invention proposes a lifting mechanism anti-shock control system and a control method. The control system includes a lifting mechanism control handle, a frequency converter, a lifting motor, an encoder, a bypass button, and an anti-bump zero setting button. , the bypass button and the anti-shock zero setting button are electrically connected to the frequency converter, the encoder is connected to the drive shaft of the lifting motor, the encoder signal and the lifting motor are electrically connected to the frequency converter, the control of the present invention The method presets the zero point of anti-overrunning, and determines the deceleration zone of anti-overrunning according to the zero point. Every time the hoisting mechanism rises, the frequency converter judges whether the hook reaches the deceleration zone of anti-overrunning to control whether the hoisting motor continues to maintain the current position. Speed ​​running still starts to decelerate and stop, so as to achieve the purpose of anti-crashing. The method of the invention is simple, the system control effect is good, the safety is high, and it has good application prospects.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a control system and control method for an anti-overshooting mechanism of a lifting mechanism. Background technique [0002] On the lifting equipment, the lifting mechanism needs to be manually controlled. When it rises to the top of the lifting equipment, the hook should be controlled to stop moving, otherwise it will cause an accident to the top. For small equipment, it is easy to observe whether it is the top. For large-scale equipment, it is necessary to use some auxiliary mechanisms to help identify whether there is a danger of jumping to the top. At present, the most common method is to install a mechanical cam switch on the lifting mechanism. When the hook reaches the specific position set by the mechanical cam switch , it automatically controls the motor to stop, so as to prevent the occurrence of the top rush. [0003] However, most of the large-scale lifting...

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Problems solved by technology

[0003] However, most of the large-scale lifting equipment is installed outdoors at present, and the mechanical cam switch is a mechanical structure. Its long-term exposure to wind and sun can easily lead to its failure, which leads to a greater safety hazard. Therefore, it is necessary to add a set of more safe and reliable The anti-shock control system of the lifting mechanism

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