Lift car self-locking mechanism

Abstract

The present invention discloses a lift car self-locking mechanism which comprises a mounting rack and a connection plate, wherein the mounting rack and the connection plate are connected, the connection plate is connected with the top end of a lift car, the lift car self-locking mechanism also comprises a roller, a variator, a draught fan, a pipeline and an expansion bag, wherein the roller is closely contacted with a slide rail, the roller and the mounting rack are rotatably connected, and the variator and the draught fan are installed on the connection plate; a rotary shaft of the roller isconnected with an input shaft of the variator after passing through the mounting rack, and an output shaft of the variator is connected with an input shaft of the draught fan; an annular groove is formed in the inner wall of the mounting rack, the expansion bag is placed in the annular groove, and an output end of the draught fan communicates with the expansion bag through the pipeline; during well dropping, the lift car is moved down at a fast speed, and then the roller rolls fast along the slide rail, power is transferred to the draught fan by the roller through the rotary shaft and the variator, air is blown to the expansion bag by the draught fan through the pipeline, and the expansion bag is expanded to enclasp the roller, through the linkage of the roller and the expansion bag, external power is not required, so that energy is saved and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a car self-locking mechanism. Background technique [0002] With the continuous progress and development of society, the number of high-rise buildings continues to increase, and elevators have become an indispensable means of transportation between buildings. However, existing elevators have hidden dangers in the lifting and carrying process. Factors such as overloading, elevators having no holding force after opening turns, all broken wire ropes (or jumping off) and pull down of the main engine will cause the elevator to fall, causing larger casualties. [0003] The existing elevator car fall prevention is mostly realized by locking the sliders and slide rails on the car, and a buffer device is provided at the bottom of the elevator shaft to reduce casualties. This method has poor effect, long reaction time, and cannot Realize the self-locking of the elevator in time. Conte...

AI Technical Summary

Problems solved by technology

However, existing elevators have hidden dangers in the lifting and carrying process. Factors such as overloading, if the elevator has no holding force after opening turns, all wire ropes are broken (or tripped), and the host is pulled down will cause the elevator to fall, causing greater casualties

[0003] The existing elevator car fall prevention is mostly realized by locking the sliders and slide rails on the car, and a buffer device is provided at the bottom of the elevator shaft to reduce casualties. This method has poor effect, long reaction time, and cannot Realize the self-locking of the elevator in time

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