Safe and reliable elevator guide rail

Abstract

The invention relates to a safe and reliable elevator guide rail. The safe and reliable elevator guide rail comprises a rail bottom, and a rail body which is arranged vertical to the rail bottom; the rail bottom and the rail body are connected to form a reversed T shaped structure; a plurality of groups of ball grooves are uniformly formed in the left surface, the top surface and the right surface of the rail body, and the top left surface and the top right surface of the rail bottom; balls are mounted in the ball grooves, and air bags are arranged in the bottoms of the ball grooves; and an automatic air inflation device for inflating air into the air bags is arranged at the bottom part of the rail bottom. The safe and reliable elevator guide rail adopting the scheme above has the advantages that the frictional force between an elevator guide shoe and the guide rail can be reduced through the balls when an elevator runs normally and thus the friction-cased damage on the guide rail can be reduced; in case of overspeed of the elevator, the air is inflated into the air bags, some balls are propped out from the ball grooves under the extruding effects of the ball grooves and the air bags, the propped-out balls are limited to roll to decelerate the elevator under overspeed, so as to lower down the speed of the elevator under overspeed, and as a result, the overspeed-cased damage can be reduced.

Description

technical field [0001] The invention relates to an elevator guide rail, in particular to a safe and reliable elevator guide rail. Background technique [0002] With more and more high-rise buildings, the demand for elevators is gradually increasing. Elevators require safety and reliability, accurate leveling, and comfortable rides, among which safety and reliability are the most important performances of elevators. Existing safety devices include such as safety gear, buffers, etc. When the elevator car stalls and falls, the safety device can reduce the falling speed of the car to a certain extent and buffer the impact force to achieve the purpose of protecting the occupants. However, the existing There are still some disadvantages in the advanced safety device. For example, the buffer will only play the role of deceleration buffer when the elevator car squats on the buffer. [0003] In addition, in the prior art, when the elevator guide shoe slides on the surface of the el...

AI Technical Summary

Problems solved by technology

Existing safety devices include such as safety gear, buffers, etc. When the elevator car stalls and falls, the safety device can reduce the falling speed of the car to a certain extent and buffer the impact force to achieve the purpose of protecting the occupants. However, the existing The safety device still has some disadvantages. For example, the buffer will only play the role of deceleration buffer when the elevator car squats on the buffer.

[0003] In addition, in the prior art, when the elevator guide shoe slides on the surface of the elevator guide rail, the guide rail has no sliding restriction on the guide shoe, and the sliding friction between the guide rail and the guide shoe causes the guide rail to wear out quickly

Images