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Friction surface microstructure scratch-resistant brake disc body

A friction surface, microstructure technology, applied in the direction of brake disc, brake type, brake components, etc., can solve the problems of large deformation in the middle area of ​​the bolt hole, small deformation of the bolt hole, easy to wear and so on

Pending Publication Date: 2022-06-28
NANJING CRRC PUZHEN HAITAI BRAKE EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brake discs of rail vehicles have bolt holes distributed in the middle of the disc body, and the disc body is installed on the wheel through bolts. There are problems such as small deformation at the bolt holes, large deformation in the middle area of ​​the bolt holes, high instantaneous temperature, and easy wear.
And these problems cannot be solved by the scheme involved in CN 107420466A

Method used

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  • Friction surface microstructure scratch-resistant brake disc body
  • Friction surface microstructure scratch-resistant brake disc body
  • Friction surface microstructure scratch-resistant brake disc body

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1 to Figure 5 As shown in the figure, the friction surface microstructure of the present invention resists the scratching of the aluminum alloy brake disc body, including: a friction ring 1, the friction ring 1 is evenly distributed with bolt holes 3 (bolt holes 3 are stepped bolt holes) along the circumferential direction, and the friction ring The outer surface of the 1 is provided with a number of chip removal and resistance scribe grooves 2 that pass through. The inner side of the friction ring 1 is provided with a heat dissipation rib group 4, a connection boss 5 and a positioning assembly 6, and a positioning groove 7 is provid...

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Abstract

The friction surface microstructure scratch-resistant brake disc body comprises a friction ring, bolt holes are evenly distributed in the friction ring in the circumferential direction, a plurality of through chip removal scratch-resistant grooves are formed in the friction surface of the friction ring, and the chip removal scratch-resistant grooves are symmetrically formed in the two sides of each bolt hole in pairs; the two ends of the chip removal scratch-resistant groove extend to the inner edge and the outer edge of the friction ring respectively, and the chip removal scratch-resistant groove passes through a high vertical deformation area (instantaneous high heat area) of the friction ring in a long path. The chip removal scratch-resistant grooves distributed on the friction surface of the disc body can discharge friction chips and block scratches, so that local heat dissipation is improved, and the temperature distribution uniformity of the disc body is improved.

Description

technical field [0001] The invention relates to the field of urban rail transit, in particular to an aluminum alloy brake disc body with a friction surface microstructure to prevent scratching. The disc body is formed by casting, and is suitable for urban rail transit trains and their urban vehicles. Background technique [0002] Conserving resources has become a basic national policy. The Transportation Committee has proposed a development strategy of strengthening the country in transportation, reducing expenditure and reducing consumption, and being green and environmentally friendly, which has put forward higher and higher requirements for material properties. The lightweight of rail trains is of great significance in reducing energy consumption, saving traction kinetic energy, and reducing train operating costs. In particular, reducing the weight of components such as brake discs and brake pads can significantly reduce the unsprung weight of the bogie and improve train ...

Claims

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Application Information

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IPC IPC(8): F16D65/12
CPCF16D65/125F16D65/127F16D65/128
Inventor 杨俊杨智勇邹震牛瑞李志强张东升韩建民李卫京刘赛赛
Owner NANJING CRRC PUZHEN HAITAI BRAKE EQUIP CO LTD
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