Anti-falling device applied to vertical lifting elevator

Abstract

The invention discloses an anti-falling device applied to a vertical lifting elevator. The anti-falling device comprises a track and a stop sliding box; wherein the track is provided with two corresponding clamping plates; the stop sliding box comprises a box body, a differential lifting frame, a damping wheel and a stop wheel; the differential lifting frame is positioned in the box body and is elastically connected with the top wall of the inner side of the box body; the two damping wheels are transversely and symmetrically arranged and elastically connected with the differential lifting frame; the damping wheels are externally and partially protruded outside of the box body; the damping wheels can stretch relative to the differential lifting frame transversely and elastically; the damping wheels press the clamping plates; the stop wheel is positioned in the differential lifting frame and is connected with the box body; the stop wheel is positioned above the damping wheels; when the moving speed of the damping wheels relative to the clamping plates is greater than the normal running speed, the differential lifting frame moves up relative to the box body and enables the damping wheels to cooperate with the stop wheel to realize the stop of the damping wheels; and with reasonable structural design, the anti-falling device provided by the invention can realize the purpose of preventing the elevator from falling safely and effectively.

Description

technical field [0001] The invention relates to an anti-falling device, in particular to an anti-falling device applied to a vertical lifting elevator. Background technique [0002] At present, one of the hidden dangers of the vertical hoisting elevator is that the traction rope of the elevator breaks, causing the elevator to fall. The purely mechanical structure anti-fall devices in the prior art have the problems of unreasonable structural design and poor safety during use, and cannot achieve safer and more effective anti-fall purposes; for example, the patent number is "CN201710331942.1" and the name is "a kind of The patent document "for vertical lifting elevator anti-fall self-locking device", which prevents falling through a mechanical structure. When the elevator falls to the position of the rack rod 5, the extended ball head cylindrical rod 622 and the strip plate 52 The self-locking angle is formed, the elevator is stuck by the self-locking, and stops falling; the ...

AI Technical Summary

Problems solved by technology

[0002] At present, one of the hidden dangers to the safety of vertical lifting elevators is that the elevator's traction rope breaks, causing the elevator to fall.

The purely mechanical structure anti-fall devices in the prior art have the problems of unreasonable structural design and poor safety during use, and cannot achieve safer and more effective anti-fall purposes; for example, the patent number is "CN201710331942.1" and the name is "a kind of The patent document "for vertical lifting elevator anti-fall self-locking device", which prevents falling through a mechanical structure. When the elevator falls to the position of the rack rod 5, the extended ball head cylindrical rod 622 and the strip plate 52 The self-locking angle is formed, the elevator is stuck by the self-locking, and stops falling; the existing problem is that the position of the ball head cylindrical rod 622 is relatively fixed after being extended and cannot be retracted, and the car cannot move up or down after being stuck The follow-up maintenance is difficult, so the structural design is unreasonable; at the same time, the extension of the ball head cylinder rod 622 is thrown out relying on the action of inertia, and whether the ball head cylinder rod 622 can be effectively thrown out is greatly affected by uncertain factors, such as cylinder If the pin and / or the ball-end cylindrical rod 622 and the blind hole 621 are affected by factors such as moisture corrosion or entering dust to increase the resistance effect, the individual ball-end cylindrical rod 622 will fail to be thrown out in time. The elevator cannot be effectively blocked, and the safety effect is not good

For example, the patent document whose patent number is "CN201820509116.1" and titled "Elevator Fall Prevention Safety Device" is to prevent falling through a mechanical structure. When it collides vertically with the impact head, the entire locking arm gets a large kinetic energy, which drives the locking head to make a circular motion and approaches the car. When it crosses the critical position, the locking rod stops on the side of the limit brick, and the locking head touches the car. The side wall of the car, and is adsorbed on the side wall of the car under the action of the permanent magnet piece, until it encounters the locking block, and under the support of the limit brick, the car stops moving; the problem is that the entire locking arm does not It is conducive to the layout in the elevator shaft, and the structural design is unreasonable; at the same time, the locking head and the locking block are in instantaneous rigid contact, which has a large impact and cannot be buffered by friction, which is not conducive to the safety and stability of the car.

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