Linkage outer expansion type drum brake

A drum brake and linkage technology, applied in drum brakes, brake types, brake actuators, etc., can solve problems such as high vehicle maintenance costs, unsafe driving, and unreliable braking, and achieve improved braking effect. The braking distance is short and the effect of reducing traffic accidents

Inactive Publication Date: 2012-12-12
杨胜军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of unreliable braking, long braking distance, unsafe driving and frequent replacement of friction plates in the existing outward expansion drum brake, the present invention provides a linkage outward expansion drum brake

Method used

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  • Linkage outer expansion type drum brake
  • Linkage outer expansion type drum brake
  • Linkage outer expansion type drum brake

Examples

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Embodiment Construction

[0018] Linkage external expansion drum brake, including brake disc 1, upper brake shoe 2 symmetrically arranged on the brake disc, lower brake shoe 3 and friction plate 4 riveted on the brake shoe, the upper and lower braking One end sleeve hole 5 of the moving shoe is respectively connected with the corresponding eccentric support pin 6 or the support pin mounted on the brake disc (as known, if the brake system is hydraulic pressure type, the brake disc is equipped with support pins, if the brake system If it is an air pressure type, the brake disc is equipped with an eccentric support pin), the other end of the upper and lower brake shoes is the free end in contact with the camshaft 7 or the hydraulic wheel cylinder, and a return is set between the upper and lower brake shoes. The position spring 9 also includes the brake drum 11 installed on the output shaft 10 of each bridge, and the upper eccentric shaft sleeve 12 is movable between the sleeve hole at one end of the upper ...

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PUM

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Abstract

The invention relates to a drum brake, in particular to a linkage outer expansion type drum brake, which solves the problems of unreliable braking, a long braking distance, unsafe running and frequent replacement of friction plates in the conventional brake. The linkage outer expansion type drum brake comprises a brake disc, an upper brake shoe, a lower brake shoe, a friction plate and a brake drum, wherein the upper brake shoe and the lower brake shoe are connected with an eccentric backing pin or a backing pin; a return spring is arranged between the upper brake shoe and the lower brake shoe; the brake drum is arranged on each bridge output shaft; an upper eccentric shaft sleeve is sleeved between a sleeve hole at one end of the upper brake shoe and the eccentric backing pin or the backing pin, and a lower eccentric shaft sleeve is sleeved between a sleeve hole at one end of the lower brake shoe and the eccentric backing pin or the backing pin; the upper eccentric shaft sleeve and the lower eccentric shaft sleeve are respectively fixedly provided with an upper linkage plate and a lower linkage plate; a synchronous transfer case which performs synchronous operation with a cam shaft or a hydraulic sub-pump is arranged at the tail ends of the upper and lower linkage plates; and small return springs are arranged between the upper and lower linkage plates and the brake shoes. Thelinkage outer expansion type drum brake enhances the braking effect, shortens the braking distance, improves the safety performance of vehicles in the running process, reduces traffic accidents, and has a wide application range.

Description

technical field [0001] The invention relates to a drum brake used in automobiles, in particular to a linkage outward expansion drum brake. Background technique [0002] Commonly known as brakes, brakes are divided into external expansion type, internal embrace type, butterfly type, etc. in terms of working principle. The braking system is divided into air pressure type, hydraulic pressure type, mechanical type, etc. Brakes are mainly used on vehicles. The safety device, the vehicle relies on the brakes to slow down and stop while driving, is an indispensable part of the vehicle in its manufacture and use. [0003] At present, the main configurations of automobiles during manufacture are outwardly expanding drum brakes and butterfly brakes. Among them, outwardly expanding drum brakes are mainly used on various loaded vehicles and various small vehicles. The effect of braking is relatively ideal, but after the vehicle is fully loaded with goods, if emergency braking is adopte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D51/20F16D65/14
Inventor 杨胜军
Owner 杨胜军
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