Brake shoe

Abstract

The invention discloses a brake shoe. The brake shoe comprises a shoe and a friction lining, wherein the shoe is integrally formed by a circular arc-shaped framework and a support part extending from a concave arc surface of the framework to the center; one end of the shoe is a hinged end with a semi-circular groove in the end face while the other end thereof is a free end with a flat end face; the friction lining is arranged on a convex circular arc surface of the framework; the brake shoe further comprises a transitional clamping block with one end thereof having a groove and the other end thereof having a flat end face; the transitional clamping block is sleeved on the free end of the shoe through the groove; the groove is also used for containing a compensation spacer; the traditional clamping block and the compensation spacer are fixed on the free end of the shoe through sunk screws. As the compensation spacer is added at the free end of the shoe to compensate a brake gap after abrasion of both the friction lining and a brake drum, the brake shoe prolongs the service life of both the friction lining and the brake shoe, and reduces the replacement times of the brake shoe.

Description

Technical field [0001] The invention relates to the field of brakes, in particular to a brake shoe. Background technique [0002] Vehicles are the most convenient and most used means of transportation in modern transportation. The brake is the most important safety part on the vehicle. The braking performance of the vehicle directly affects the driving safety of the vehicle. Drum brakes are cheap and conform to traditional designs. They are widely used. They include brake drums, brake shoes, support pins, return springs and actuators. They rely on the brake shoes to stretch the brake drum to achieve braking. Drum brakes have the following shortcomings: (1) The wear limit range of the friction lining on the brake shoe is small. When the friction lining wears to the limit, it needs to be replaced in time, otherwise there will be safety hazards, so the friction lining is replaced Frequent replacements are troublesome and costly; (2) After the brake drum is worn, the gap between it ...

AI Technical Summary

Problems solved by technology

Drum brakes are cheap and conform to the traditional design, and are widely used. They include brake drums, brake shoes, support pins, return springs and actuators. Drum brakes have the following disadvantages: (1) The wear limit range of the friction lining on the brake shoe is small. When the friction lining wears to the limit, it needs to be replaced in time, otherwise there will be safety hazards, so the replacement of the friction lining More frequent, troublesome replacement and high cost; (2) After the brake drum is worn out, the gap between it and the friction lining cannot be compensated, resulting in the continuous increase of the brake gap, even if a new friction lining or brake shoe is replaced, its life It will also become shorter and shorter. Under the same conditions, the worn brake drum will lead to more frequent replacement of friction linings, and it is still difficult to compensate for the increased brake clearance, which will easily cause the brakes to be insensitive, resulting in the need for emergency braking. Security risks

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