An aluminum-steel combined rail vehicle brake disc

A rail vehicle, brake disc technology, applied in the direction of brake disc, brake type, brake components, etc., can solve the requirements of reducing weight, the brake disc can not meet the problems of higher temperature and thermal stress at the same time, Achieve the effect of improving the life of the brake disc, reducing the temperature, and good high temperature wear resistance

Active Publication Date: 2021-08-03
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the above-mentioned technical problems that the existing brake discs cannot meet the requirements of bearing higher temperature and thermal stress and reducing weight at the same time, an aluminum-steel combined rail vehicle brake disc is provided

Method used

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  • An aluminum-steel combined rail vehicle brake disc
  • An aluminum-steel combined rail vehicle brake disc
  • An aluminum-steel combined rail vehicle brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1-5 As shown, the present invention provides an aluminum-steel combined rail vehicle brake disc, comprising a brake disc main body 1 and an outer layer plate, the brake disc main body 1 is made of aluminum alloy, and the outer layer plate is made of Made of alloy steel or cast iron; the brake disc main body 1 is provided with a number of heat dissipation ribs; the upper surface and the lower surface of the brake disc main body 1 are respectively provided with fan-shaped grooves 11; the outer plate is fixedly installed on the In the fan-shaped groove 11.

[0036] Further, the brake disc main body 1 is made of high-strength aluminum alloy.

[0037] Further, 3 to 8 fan-shaped grooves 11 are respectively provided on the upper surface and the lower surface of the brake disc main body 1, and the interval between two adjacent fan-shaped grooves 11 is 5 mm to 15 mm, which is considered The difference between the thermal expansion coefficients of steel and alum...

Embodiment 2

[0053] On the basis of Embodiment 1, six fan-shaped grooves 11 are arranged in an axially symmetrical distribution on the upper surface and the lower surface of the brake disc main body 1, and the interval between two adjacent fan-shaped grooves 11 is 10 mm. , the depth of the fan-shaped groove 11 is 15mm.

[0054] Further, the heat dissipation ribs are cylindrical.

[0055] Further, the boss 13 is cylindrical with a height of 8mm.

[0056] Further, the positioning step 12 is arranged on the fan-shaped groove 11 at a position corresponding to the bolt 3 .

Embodiment 3

[0058] Such as Figure 6-7 As shown, the difference between this embodiment and Embodiment 1 is that the brake disc can be used for foundation braking on urban rail trains, and the outer plate is made of compacted graphite cast iron.

[0059] Further, the outer plate is provided with screw holes, and the inside of the heat dissipation rib at the position corresponding to the screw holes on the main body of the brake disc is provided with threaded holes, and the brake disc also includes screws 9 through which the screws 9 pass through. Screw into the threaded hole through the screw hole, so that the outer layer board is fixedly installed in the fan-shaped groove 11 .

[0060] Further, the heat dissipation ribs at the positions corresponding to the screw holes on the brake disc main body 1 are heat dissipation ribs II10, and the heat dissipation ribs at other positions are heat dissipation ribs I8, and the heat dissipation ribs II10 are thicker than the heat dissipation ribs I8 ...

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Abstract

The invention provides an aluminum-steel combined rail vehicle brake disc, comprising a brake disc main body and an outer layer plate, the brake disc main body is made of aluminum alloy, and the outer layer plate is made of alloy steel or cast iron ; The inside of the main body of the brake disc is provided with a number of ribs; the upper surface and the lower surface of the main body of the brake disc are respectively provided with fan-shaped grooves; the outer plate is fixedly installed in the fan-shaped grooves. The technical solution of the invention solves the problem that the existing brake discs cannot meet the requirements of bearing higher temperature and thermal stress and reducing weight at the same time.

Description

technical field [0001] The invention relates to the technical field of brake discs, in particular to an aluminum-steel combined rail vehicle brake disc. Background technique [0002] The brake disc is an important key component in the disc brakes of rail vehicles. During braking, the brake disc and the brake pads form a friction pair, which consumes the kinetic energy of the train through mutual friction to achieve the purpose of stopping. On the one hand, brake discs are required to withstand higher temperatures and thermal stresses, and on the other hand, the weight of vehicles is required to be reduced. [0003] When the vehicle brakes, the kinetic energy of the vehicle is converted into heat energy through friction, which requires the brake disc to have good wear resistance. Among many materials, steel materials that are wear-resistant and thermally fatigue-resistant have become Rail vehicle brake discs, especially high-speed train brake discs are the first choice. At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/12F16D65/847
CPCF16D65/125F16D65/128
Inventor 杨俊英韩晓明王长峰苏琳琳符蓉高飞
Owner DALIAN JIAOTONG UNIVERSITY
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