The invention relates to the technical field of brakes, in particular to a double-insurance elevator braking device which comprises safety tongs arranged at the bottom of an elevator car, and a trigger block is arranged on the safety tongs. The limiting block is arranged on the elevator guide rail, and the triggering block can abut against the limiting block when the elevator car falls to a designated position; the safety tongs comprise a sliding block used for braking, and the trigger block is arranged on the sliding block. The trigger block comprises a bottom plate and a trigger barrier strip, the bottom plate is connected with the sliding block, and the trigger barrier strip can abut against the limiting block when the elevator car falls to the designated position. By the adoption of the scheme, the technical problem that in the prior art, due to failure of an elevator speed limiter, an elevator car falls to the bottom can be solved, when the speed limiter fails, falling of the trigger block is stopped through the limiting block, and therefore the sliding block moves upwards for braking, the elevator car is braked at the designated position, and the elevator car is prevented from directly falling to the bottom.

    本发明涉及制动器的技术领域,具体为一种双保险电梯制动装置,包括设于电梯轿厢底部的安全钳,安全钳上设有触发块;还包括设于电梯导轨上的限位块,触发块能够在电梯轿厢下落到指定位置时与限位块相抵;安全钳包括用于制动的滑块,触发块设于滑块上;触发块包括底板和触发挡条,底板与滑块连接,触发挡条能够在电梯轿厢下落到指定位置时与限位块相抵。采用本方案,能够解决现有技术中电梯限速器失效导致电梯轿厢坠底的技术问题,在限速器失效时,通过限位块阻挡触发块的下落,从而使得滑块上移制动,以此使得电梯轿厢在指定位置制动,避免电梯轿厢直接坠底。


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    Title :

    Double-insurance elevator braking device


    Additional title:

    一种双保险电梯制动装置


    Contributors:
    LIU LIANCHUN (author) / LIU SHIJIE (author)

    Publication date :

    2024-05-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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