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Wheel-mounted brake disc of high-speed train

A technology for high-speed trains and brake discs, applied in the directions of brake discs, brake types, brake components, etc., it can solve the problems of scrapping, detachment, safety accidents of wheels and brake discs, and reduce the risk of bolt breakage, pull The effect of small tensile stress amplitude and extended life

Active Publication Date: 2019-01-18
南京中盛铁路车辆配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the groove depth reaches a certain level, the wheels and brake discs will be forcibly scrapped, which greatly increases the operation and maintenance cost of the EMU
In addition, the warping deformation of the disc body will stretch the bolts, and the bolts are subject to a large tensile stress, and the bolts are easy to break. Once the bolts break, the disc body will be separated from the wheel web, which may cause serious safety accidents

Method used

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  • Wheel-mounted brake disc of high-speed train
  • Wheel-mounted brake disc of high-speed train
  • Wheel-mounted brake disc of high-speed train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Such as Figure 1 to Figure 10 As shown, the high-speed train wheel-mounted brake disc includes an inner disc body 11 and an outer disc body 12, and the inner disc body 11 and the outer disc body 12 are rings with a heat dissipation rib structure; the inner disc body 11 and the outer disc body Body 12 is located on the inner side and outer side of wheel web 81 respectively, and the planes on both sides are friction surface 13 and heat dissipation rib surface 14 respectively; refer to figure 2 with Figure 10, there are 6 slide grooves 15 distributed on the circle 19 in the middle of the disk, which are located on the side of the heat dissipation ribs, and 6 sleeve holes 16 in the inner circumference of the disk are evenly distributed on the distribution circle smaller than the middle circle of the disk, and 6 sleeve holes 16 are evenly distributed in the circle larger than the middle There are 6 disc peripheral sleeve holes 17 evenly distributed on the distribution ci...

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Abstract

The invention belongs to the technical field of train braking device, and particularly relates to a wheel-mounted braking disc of a high-speed train. The wheel-mounted braking disc of the high-speed train comprises an inner disc body and an outer disc body, and the inner disc body and the outer disc body are initially positioned through a positioning pin shaft and a wheel web; the sleeve hole of the inner disc body is provided with an inner splicing sleeve, the sleeve hole of the outer disc body is provided with an outer splicing sleeve, a pre-locking mechanism is arranged between the inner splicing sleeve and the outer splicing sleeve, and the inner disc body and the outer disc body are pre-locked through a pre-locking mechanism and the wheel web; the inner splicing sleeve and the outer splicing sleeve are correspondingly provided with bolt mounting holes, and the inner disc body and the outer disc body are final-locked through bolts and the wheel web. Compared with the traditional brake disc, the wheel-mounted braking disc of the high-speed train greatly reduces the risk of bolt breakage, and even if the bolt is broken, the splicing sleeve can still press the inner disc body andthe outer disc body on the wheel web, therefore, the reliability is higher.

Description

technical field [0001] The invention belongs to the technical field of train braking devices, and in particular relates to a high-speed train wheel-mounted brake disc. Background technique [0002] At present, domestic CRH series EMUs and "Fuxing" EMUs all adopt disc brakes, and all power trains are equipped with wheel-mounted brake discs. The existing EMU wheel-mounted brake disc is mainly composed of an inner disc body, an outer disc body, positioning pins and fasteners; the disc body is a ring with a heat dissipation rib structure and there are 6 There are 12 equicircumferentially distributed chutes near the middle; the positioning pin is a solid shaft, and the cylindrical surface at both ends of the cylindrical shaft is milled to a certain depth symmetrically in the axial direction. After milling, the two The plane and the center line of the cylinder are distributed symmetrically; on the wheel web in contact with the brake disc, 12 equicircumferentially distributed bolt...

Claims

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Application Information

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IPC IPC(8): F16D65/12F16D65/847
CPCF16D65/128F16D65/847
Inventor 胡谦
Owner 南京中盛铁路车辆配件有限公司
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