The invention discloses an automatic locking method for preventing an elevator from falling. When a lift car is out of control and falls, a traction rope loses the traction effect on the lift car, thepulling force of the traction rope on a hanging wheel carrier is also reduced, and the hanging wheel carrier moves towards the position below an upper beam under the action of the elastic force of ahanging spring and the gravity of a disc hanging block; meanwhile, a pull rope tensioned by the hanging wheel carrier is also loosened, and two sets of lift car locking devices limited and mounted atthe top of the lift car move towards the two sides under the reset elastic force of a frame spring and the extrusion action of the disc hanging block on arc-shaped pressing blocks; and a locking eccentric wheel on a locking shoe is in friction contact with the side wall of an elevator shaft, at the moment, the disc hanging block is clamped between the two arc-shaped pressing blocks, the two arc-shaped pressing blocks are limited and mounted on the lift car and cannot retract, the locking eccentric wheel can eccentrically rotate after being in friction against the side wall of the elevator shaft, the locking eccentric wheel can rapidly abut against the side wall of the elevator shaft, and the lift car stops falling.

    本发明公开了防止电梯坠落的自动锁定方法,轿厢失控出现坠落时,拽引绳会失去对轿厢的牵引作用,拽引绳对吊挂轮架的拉力也会减小,吊挂轮架在吊挂弹簧的弹力,及圆盘吊块重力的作用下,吊挂轮架向上梁下运动,同时,吊挂轮架拉紧的拉绳也会松弛,两套被限位安装在轿厢顶部的轿厢锁定装置,在车架弹簧复位弹力,及圆盘吊块对弧形压块的挤压作用下向两侧运动;锁定靴上的锁定偏心轮会与电梯井侧壁摩擦接触,这时,圆盘吊块夹在两件弧形压块之间,使两件被限位安装在轿厢无法回缩,锁定偏心轮在与电梯井侧壁摩擦后会出现偏心转动,锁定偏心轮会迅速顶压在电梯井侧壁上,使轿厢停止坠落。


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    Title :

    Automatic locking method for preventing elevator from falling


    Additional title:

    防止电梯坠落的自动锁定方法


    Contributors:
    CHEN HEDONG (author)

    Publication date :

    2021-01-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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