The invention relates to an elevator landing door opening and closing preventer which is composed of a triangular key, an upper stop block, a lower fixed block, a friction plate and a pin shaft. The triangular key is assembled on the upper stop block, through operating the triangular key, interaction of the upper stop block and the lower fixed block can be conducted, and the triangular key and the upper stop block can be detached. The triangular key and the preventer are integrally formed, when a landing door is opened, the elevator landing door opening and closing preventer can be placed on a landing sill groove conveniently, the open state of the landing door can be kept, and the operation is simple; the elevator landing door opening and closing preventer is provided with the friction plate which can increased frictional force, it is guaranteed that after door sheets are stopped by using the elevator landing door opening and closing preventer, the door sheets cannot be closed, and the safety and reliability are achieved.


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    Title :

    Elevator landing door opening and closing preventer


    Contributors:
    YANG WEI (author) / CHEN JIANHUA (author)

    Publication date :

    2015-09-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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