The invention relates to a landing door lock device. The landing door lock device solves the problems that the position of a lock ball of a common landing door lock device is unadjustable, and adjustment is complex when the lock ball and a door knife are offset in position. The device comprises a main lock and an auxiliary lock. The main lock comprises a bottom plate and a lock arm, a balancing weight is mounted on the lock arm, a movable ball is fixed to the balance block, a fixed ball is mounted on the bottom plate, the auxiliary lock comprises a buckle plate, the lock arm is connected to a bottom plate through a rotating shaft, an arc hole is formed in the balancing weight, a shaft of the fixed all is sleeved with a shaft sleeve, the shaft sleeve penetrates through the arc hole, a first latch hook is arranged at the front end of the buckle plate, a lock column is correspondingly arranged on the lock arm, and the first latch hook is fastened to the lock column. The landing door lock device has the advantages that the rotating shaft and the fixed ball are arranged separately, the position of the fixed ball and the position of the movable ball can be adjusted leftwards and rightwards, when the lock balls and the door knives of the landing door lock devices of different floors are offset in position, the positions of the whole landing door lock devices do not need to be adjusted, adjustment is simple, and the problem that the electric contacts on the door locks are in poor contact is avoided.


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    Title :

    Landing door lock device


    Contributors:
    LIU HUANFENG (author) / CAI QINGXI (author) / CHEN CHONG (author) / ZHANG HUA (author) / YANG YONGTAO (author) / WU JUNFENG (author)

    Publication date :

    2015-07-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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