The invention relates to a method for preventing accidental movement of an elevator cage. The method comprises the following steps: A, a control cabinet controls an elevator door lock to open; B, an elevator door opening mechanism controls an elevator door to open; C, the control cabinet controls the elevator door opening mechanism to close the elevator door, the door opening mechanism transmits a door close in-place signal to the control cabinet after the elevator door is closed, and the elevator enters an alarm state if the control cabinet receives an elevator door lock closing signal before the door close in-place signal; D, the control cabinet controls an executing mechanism to close the elevator door lock; E, the control cabinet controls a brake motor to start and transfers rotary torque to a brake; F, the brake examination module examines whether an encoder generates a signal, and the elevator enters the alarm state. Each time when the elevator is started, the working condition of the elevator door lock and the brake force of the brake are examined one by one, the elevator is stopped and an alarm is sent immediately after abnormity of the elevator door lock and the brake is discovered, and the serious accident of shearing or falling of the elevator is substantially avoided.


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    Title :

    Method for preventing accidental movement of elevator cage


    Contributors:
    ZHENG HONGAN (author) / ZHANG GUIZHU (author) / JIN DONGLEI (author) / SHI YEXIU (author)

    Publication date :

    2015-08-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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