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Powder metallurgy brake shoe structure and machining method thereof

A technology of powder metallurgy and brake shoes, which is applied in the field of powder metallurgy brake shoe structure and its processing, can solve problems such as weld cracks and shedding, achieve the effects of eliminating deformation, simplifying the manufacturing process, and eliminating hidden dangers of driving safety

Active Publication Date: 2015-10-07
贵州新安航空机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So as to solve the problem of cracks or even falling off in the welding seam of the stopper on the brake shoe, the positioning pin and the welding part of the brake shoe nose and the shoe back, and improve the reliability of the brake shoe back structure

Method used

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  • Powder metallurgy brake shoe structure and machining method thereof
  • Powder metallurgy brake shoe structure and machining method thereof
  • Powder metallurgy brake shoe structure and machining method thereof

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Embodiment Construction

[0056] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.

[0057] like Figure 3 to Figure 6As shown, a powder metallurgy brake shoe structure includes a back plate 4, a steel back 6, a friction body 7 and a tile back part 8, the back plate 4 is fixed on the inner arc of the tile back part 8, and the steel back 6 Located on the inner arc of the back plate 4, the friction body 7 is fixed on the steel back 6, and the tile back part 8 is composed of a tile back body 81 and an arc stopper 82 and a boss respectively arranged on the tile back body 81. The positioning pin 83 and the curved surface brake shoe nose 84 are formed, and the arc stopper 81, the boss positioning pin 83 and the curved surface brake shoe nose 84 are integrated with the tile back body 81. That is, the forming process is used to integrate the arc stopper 82, the boss positionin...

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Abstract

The invention discloses a powder metallurgy brake shoe structure and a machining method thereof. The brake shoe structure comprises a back plate, a steel backing, a friction body and a shoe back component. The back plate is fixed to the arc in the shoe back component, the steel backing is located on the inner arc of the back plate, and the friction body is fixed to the steel backing. The shoe back component is composed of a shoe back body, arc check blocks, boss locating pins and a curved shoe nose, the arc check blocks, the boss locating pins and the curved shoe nose are arranged on the shoe back body, and the arc check blocks, the boss locating pins, the curved shoe nose and the shoe back body are integrated. A weld joint formed by welding the steel backing and the shoe back body on a brake block in the middle of a brake shoe is connected with weld joints formed by welding the steel backing and the shoe back body on brake blocks on the two sides of the brake shoe into a whole, the situation that in the frequent brake process of a currently-used shoe brake on a locomotive, weld joints of welding parts crack, and especially weld joints crack and even fall off in the welding process of a shoe brake nose on the brake shoe can be avoided within the service life of the shoe brake, and potential running safety hazards are eliminated.

Description

technical field [0001] The invention belongs to the technical field of railway locomotives and vehicle brakes, and in particular relates to a powder metallurgy brake shoe structure and a processing method thereof. Background technique [0002] Brake shoe is an important part that produces braking torque when the friction surface of brake shoe is pressed against the wheel tread under the action of brake thrust when railway locomotives and vehicles are braking. like figure 1 , figure 2 As shown, when the existing powder metallurgy brake shoes are processed, the block 1, the positioning pin 2, the tile back 3, the back plate 4, the brake shoe nose 5 and the friction body 7 are usually processed first, and then the block 1 and the friction body 7 are respectively processed. The brake shoe nose 5 is welded on the outer arc of the tile back 3, and then the positioning pin 2 and the back plate 4 are welded on the inner arc of the tile back 3, and finally the friction body 7 is w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/04F16D69/00
Inventor 彭旭光
Owner 贵州新安航空机械有限责任公司
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