The invention relates to a protective device for pit maintenance. The protective device for pit maintenance is provided with a lift shaft. A pit is formed in the bottom of the lift shaft. A lift car is arranged in the lift shaft. A limit switch is arranged on a maintenance limiting baffle. A limit switch trigger is arranged at the bottom of the lift car. Compared with the prior art, the protective device for pit maintenance has the advantages that through the arrangement of the maintenance limit switch, a lift is stopped on the maintenance limit switch when the lift needs to be maintained, and the protective device is particularly suitable for lifts provided with no pit or lifts with shallow pits.


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    Title :

    Protective device for pit maintenance


    Contributors:
    YU BIN (author) / ZHU SENFENG (author) / MENG QINGDONG (author) / ZHANG LICHUN (author)

    Publication date :

    2015-10-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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