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Drum brake lining and drum brake

A technology of drum brakes and brake linings, which is applied in the direction of brake parts, friction linings, mechanical equipment, etc., can solve the problems of uneven pressing of drum brake linings and potential safety hazards, and improve the uneven pressing Uniform, conducive to discharge, improve the effect of stability

Inactive Publication Date: 2017-02-22
BEIJING TIANYISHANGJIA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a drum brake lining and a drum brake to solve the problem of uneven pressing of the drum brake lining and potential safety hazards in the prior art

Method used

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  • Drum brake lining and drum brake
  • Drum brake lining and drum brake
  • Drum brake lining and drum brake

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Effect test

Embodiment 1

[0027] Such as Figure 1 to Figure 3 As shown, the drum brake lining according to this embodiment adopts a split structure, specifically including a plurality of sub-linings 10, the sub-linings 10 include a friction body 11 made of powder metallurgy materials, and the friction body 11 has a For the outer arc surface 115 matched with the brake drum, the ratio of the length L of the friction body 11 along the axial direction of the brake drum to the average arc length D along the circumferential direction of the brake drum ranges from 2:1 to 6:1 Therefore, the drum brake lining in this embodiment adopts a split structure, and at the same time, the shape and size of the split friction body 11 are limited, so as to ensure the braking performance of the drum brake lining and the difficulty of installation. Under the premise of small change in the degree of ease, the uneven pressing of drum brake linings made of powder metallurgy materials has been improved, and the stability of the...

Embodiment 2

[0033] An embodiment of the present invention also provides a drum brake, including a brake shoe and a drum brake lining installed on the brake shoe, the drum brake lining is the above-mentioned drum brake lining , so that the drum brake of the embodiment of the present invention has the advantages of high reliability and good stability.

[0034] Drum brakes usually use a transmission mechanism to expand the brake shoes outward, and press the drum brake linings to cooperate with the brake drum to obtain braking force. Force part, in the drum brake lining in the embodiment of the present invention, the ratio of the length L of the friction body 11 along the axial direction of the brake drum to the average arc length D along the circumferential direction of the brake drum is different , the proportion value of the friction body 11 installed in the main force receiving part is smaller than that of the friction body 11 installed in the auxiliary force receiving part, that is, the ...

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Abstract

The invention provides a drum brake lining and a drum brake. According to divided structure of the drum brake lining, the drum brake lining comprises a plurality of sub linings. The sub lining comprises a friction body made from powder metallurgy material. The friction body is provided with an outer cambered surface which is matched with the brake drum. The length value L of the friction body along the axial direction of the brake drum and the average arc length value D along the circumferential direction of the brake drum are in the range of from 2:1 to 6:1. The drum brake lining of the drum brake lining and the drum brake adopts the divided structure and simultaneously limits the shape and size of the friction body after dividing. Under the premise of the braking performance of the drum brake lining and the little change in the degree of difficulty of installation, the drum brake lining and the drum brake improve the drum brake lining of the powder metallurgy material and increase the stability of the drum brake linings for powder metallurgy materials, and is favorable for the popularization and application of the drum brake lining.

Description

technical field [0001] The invention relates to a drum brake lining and a drum brake. Background technique [0002] At present, due to its large absolute braking force and low manufacturing cost, drum brakes are still widely used in heavy-duty commercial vehicles and some special vehicles. For the drum brake linings used in drum brakes, they are mostly made of resin-based composite materials, and from the current research and experimental results, it is found that if the drum brake linings are made of powder metallurgy materials, their wear rate and The thermal stability of the friction coefficient is obviously better than that of resin-based composite materials, which makes the application prospect of this type of drum brake lining very broad. [0003] However, in the prior art, if the drum brake lining is made of powder metallurgy materials, although it has better performance, the drum brake lining made of powder metallurgy materials is generally manufactured by pressing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/00F16D65/04
CPCF16D69/00F16D65/04
Inventor 吴佩芳党一纵
Owner BEIJING TIANYISHANGJIA NEW MATERIAL
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