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Brake shoe with split friction plates and drum brake

A friction plate and brake shoe technology, which is applied in the field of brake shoes, can solve problems such as large noise, high vibration frequency, waste of resources, etc., and achieve the effects of easy assembly and disassembly, reduced brake noise, and easy maintenance and replacement

Active Publication Date: 2021-10-19
CHANGXING HUAYI ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The friction pad is the main working part in the braking process. The friction pad in the existing drum brake is mainly adhered to the brake shoe body as a whole by adhesive. Severe pad wear requires professionals to replace the entire brake shoe, resulting in high maintenance costs and serious waste of resources
In addition, after the existing drum brake has been used for a certain period of time, due to the wear of the friction plate and the accumulation of fit errors between parts, as well as the design of the integral arc-shaped friction plate, it is more likely to vibrate during braking, and the vibration The frequency is high, so it is prone to loud noise

Method used

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  • Brake shoe with split friction plates and drum brake
  • Brake shoe with split friction plates and drum brake
  • Brake shoe with split friction plates and drum brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0035] Embodiment 2. On the basis of Embodiment 1, in order to further reduce the noise of the brake shoe during use, a gasket 4 is provided between the friction plate 3 and the bottom wall of the installation groove 2. The friction plate 3 and the gasket 4 It is an integral structure fixed together; a through hole 6 is opened in the center of the friction plate 3 and the gasket 4, and a threaded hole 7 is opened on the bottom wall of the installation groove 2, so that the friction plate 3 and the gasket 4 can be connected by screws. They are fixed together in the installation groove 2, and the screws are countersunk screws. figure 1 , 2 , 3, the through hole 6 of the gasket 4 is provided with a counterbore to accommodate the screw and nut, so that the nut end of the screw will not protrude from the surface of the friction plate 3, so as to avoid affecting the normal operation of the friction plate 3.

[0036] In this embodiment, in addition to achieving the effect of reducin...

Embodiment 3

[0039] Embodiment 3. On the basis of Embodiment 1 and Embodiment 2, a sound-absorbing sheet 8 can also be designed between the friction sheet 3 and the bottom wall of the installation groove 2 to further provide noise reduction effect, wherein the friction sheet 3 can be independently It is used in conjunction with the sound absorbing sheet 8; the friction sheet 3 can also be used in conjunction with the sound absorbing sheet 8 and the gasket 4 at the same time. It can also be arranged between the gasket 4 and the bottom wall of the installation groove 2 to achieve a better noise reduction effect.

[0040] In addition, in order to improve the installation stability of the friction parts, one embodiment of the present invention is an integrated structure of the friction plate 3 and the gasket 4. During specific production, the friction plate 3 needs to have high wear resistance. In order to improve the friction plate 3 and the gasket The integrity of the sheet 4, a plurality of...

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Abstract

The invention provides a brake shoe with split friction plates. According to the technical scheme, the brake shoe comprises a shoe plate, 3-6 mounting grooves distributed in the circumferential direction are formed in the outer side wall of the shoe plate, and one friction plate is mounted in each mounting groove; the inner wall surface of the shoe plate is of an arch structure, and the wall thickness between the bottom wall surface of at least one mounting groove and the inner ring wall surface of the shoe plate is not consistent with the wall thickness between the bottom wall surfaces of the other mounting grooves and the inner ring wall surface of the shoe plate, so that shoe plate resonance can be reduced. The friction plates are convenient to disassemble and replace, the maintenance cost is reduced, resource waste is reduced, and the problem of braking noise does not occur easily after long-time use. The invention further discloses a drum brake with the brake shoe with the split friction plates.

Description

technical field [0001] The invention belongs to the technical field of brake devices, in particular to brake shoes. Background technique [0002] Drum brakes are configured on many models due to their reliability and powerful braking force. It is fixed to the tire and rotates at the same speed. When braking, the brake shoes contact the inner edge of the brake drum, and the friction force generated by the contact can restrain the rotation of the tire to achieve the purpose of braking. The drum brake is composed of the brake base plate, the brake cylinder, the brake shoes and other related connecting rods, springs, pins, and brake drums. The cost of drum brakes is lower, and the absolute braking force is higher. The inner surface of the brake drum of the drum brake is the position where the brake device generates the braking torque. In the case of obtaining the same braking torque, the diameter of the brake drum of the drum brake device can be much smaller than the brake di...

Claims

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Application Information

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IPC IPC(8): F16D65/00F16D65/08F16D69/04
CPCF16D65/0006F16D65/08F16D69/0416F16D2069/0433
Inventor 许志明许文涛
Owner CHANGXING HUAYI ELECTROMECHANICAL