Anti-falling safe lifting mechanism for vertical movement and control method of anti-falling safe lifting mechanism

Abstract

The invention discloses an anti-falling safety lifting mechanism for vertical movement and a control method of the anti-falling safety lifting mechanism. The anti-falling safety lifting mechanism comprises a mounting frame, a cargo carrying frame, a speed governor, a tensioning wheel, a lifting connecting rod and safety tongs. The speed governor and the tensioning wheel are respectively arranged at the top and the lower part of the mounting frame; the lifting connecting rod and the safety tongs are installed on the cargo carrying frame, and the safety tongs comprise brake wedge blocks. And two ends of the steel wire rope are connected with the speed governor and penetrate through the tensioning wheel and the connecting shaft wheel at the lifting connecting rod end to form a loop. And the lifting connecting rod is connected with the brake wedge block. When the cargo carrying frame descends in an overspeed mode, the speed limiter locks the steel wire rope, the connecting shaft wheel moves upwards relatively, the lifting connecting rod is driven to rotate so as to lift the braking wedge block, the braking wedge block is wedged in the safety tongs body, and braking is achieved through friction self-locking between the lifting connecting rod and the inner wall of the tongs body. The device is compact in structure, purely mechanical in linkage and reliable in braking.

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