Self-expanding brake lift guide rail

Abstract

The invention relates to a self-expanding brake lift guide rail. The self-expanding brake lift guide rail comprises a rail flange and a rail body; the rail body is perpendicular to the rail flange; the rail flange is connected with the rail body to form a structure in the shape of a Chinese 'Tu' (meaning convex); the top of the rail body is uniformly provided with a plurality of I-shaped grooves along the length direction of the rail body, wherein the plurality of I-shaped grooves is perpendicular to the length direction of the rail body; I-shaped limit rods being able to move along the axial direction of the I-shaped grooves are arranged inside the I-shaped grooves; springs are connected between the limit rods and the bottoms of the I-shaped grooves; filling chambers are formed between the limit rods and the bottoms of the I-shaped grooves; and the rail flange is provided with an air inflation device for inflating the filling chambers. After using such a scheme, when the lift works normally, the limit rods retreats into the I-shaped grooves under the effect of the springs without affecting the normal work of the lift; when the lift is stalling, the air inflation device inflates the filling chambers, thereby forcing the first sections of the limit rods to extend out of the I-shaped grooves in order to decelerate the lift, thus effectively reducing the hazard of lift stalling.

Description

technical field [0001] The invention relates to an elevator guide rail, in particular to a self-expanding braking 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 t...

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

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