Brake shoe

A brake shoe and shoe technology, applied in the field of brake shoes, can solve the problems of frequent replacement of friction linings, small wear limit range, potential safety hazards, etc. Promote high-value effects

CN103742567AActive Publication Date: 2014-04-23张斌
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-04-23

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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.
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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 ...

Examples

Embodiment 1

[0031] Such as figure 1 or figure 2 As shown, a brake shoe includes: a shoe 1, a friction lining 2, a transition block 3, and a compensation pad 4, wherein: the shoe 1 consists of a circular arc-shaped skeleton and faces from the concave arc of the skeleton The support part extending at the center is integrally formed. One end of the shoe iron 1 is a hinged end with a semicircular groove on its end surface, and the other end is a free end with a flat end surface. The four sides of the free end are flat and perpendicular to the end surface; friction; The lining 2 is in the shape of a circular arc sheet corresponding to the convex arc surface of the frame of the shoe iron 1 and is correspondingly arranged on the convex arc surface of the frame of the shoe iron 1. One end of the transition block 3 is provided with a groove and the end surface of the other end is flat, which is U-shaped, and the bottom of the groove is a flat plane. The size of the groove corresponds to the size of...

Embodiment 2

[0034] Like the present invention of embodiment 1, it can be reworked and the original brake shoe can be improved, that is, in order to adapt to the small changes of the present invention, the free end of the shoe 1 of the original brake shoe The small plane adopts a height suitable for the present invention. Correspondingly, a screw hole 11 is machined on the small plane, and the transition block 3 and the compensation washer 2 can be installed on the shoe with the countersunk screw 5, without changing The overall structure of the original brake device. When the brake drum has a certain amount of wear, the arc surface of the friction part of the brake drum by the friction lining 2 will be dented due to wear, but the arc surface that is not rubbed by the friction lining 2 will remain unchanged, so the arc of the brake drum Steps will appear on the surface. When the brake shoe of the present invention is installed, it may interfere with the steps of the brake drum. The method of...