The invention provides a system for preventing on-load mistaken opening of a clamp. The system is characterized in that a weighing sensor is arranged on the clamp of a bridge crane; the weighing sensor is connected with a potentiometer, and the potentiometer is connected to the PLC; the first relay is arranged between the power supply and the clamp; the first relay is connected with the PLC; the second relay is arranged between the power supply and the first relay; the second relay is connected with the button. According to the invention, the PLC controller is arranged to realize the disconnection operation of the first relay under the condition that the weighing sensor is loaded, and the disconnection of the first relay prevents the clamp from being opened when the second relay signals, thereby avoiding the occurrence of the condition that the clamp is mistakenly opened on load.

    本发明提供一种防止夹钳有载误开的系统,包括:称重传感器设于桥式起重机的夹钳上;称重传感器连接一电位器,电位器连接至PLC控制器;第一继电器设于电源和夹钳之间;第一继电器连接PLC控制器;第二继电器设于电源和第一继电器之间;第二继电器和按钮相连。本发明通过设置PLC控制器实现称重传感器有载的情况下,对第一继电器进行实现断路操作,通过第一继电器的断路避免了夹钳在第二继电器信号时打开夹钳,避免夹钳有载误打开的情况发生。


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    Title :

    System for preventing on-load mistaken opening of clamp


    Additional title:

    一种防止夹钳有载误开的系统


    Contributors:
    CHEN HONGTAO (author) / LI HUI (author) / NIE WENQI (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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