A brake disc absorbing thermal expansion stresses

Abstract

The present application relates to a kind of brake disc that absorbs thermal expansion stress, including disc body and flange plate, flange plate is located in the side of disc body, the neck of flange plate is connected with disc body, disc body is circular disc structure, and the disc body of circular disc structure is separated into regular or irregular arc block by being set with the gap of stress release along the radial direction, adjacent arc block is connected by connecting block, and the gap of stress release is formed.The present application has good drainage, brake disc has wide stress release channel after being heated, prevents cracking, prevents cracking, wading is strong, heat dissipation is fast, weight is light, while the safety and reliability is further improved, it is conducive to lightweight design.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile brake disc, and particularly relates to a brake disc capable of absorbing thermal expansion stress. BACKGROUND

[0002] The brake is a braking force component in the braking system for friction to generate resistance to slow down or stop the vehicle. The rotating element in the friction pair of the disc brake is a disc-shaped brake disc, and the end face thereof is the braking working surface.

[0003] As one of the important elements of automobile brake, the performance of the brake disc is crucial. The disc body of the existing brake disc is a whole circular disc structure, and has the problems of poor heat dissipation, easy stress concentration, and poor wading performance. The brake disc has high working temperature, uneven stress distribution, and is prone to deformation and cracking under thermal expansion stress and low temperature, and the brake distance is obviously lengthened, thereby affecting the braking performance and service life of the automobile. The above problems are particularly prominent in the braking system of heavy trucks and buses. SUMMARY

[0004] The present application aims to solve the technical problems of the prior art, and provides a brake disc capable of absorbing thermal expansion stress. The disc body has small stress, good braking performance, and long service life.

[0005] The technical scheme adopted by the present application to solve the technical problem is as follows: a brake disc capable of absorbing thermal expansion stress, comprising a disc body and a flange disc, wherein the flange disc is arranged on one side of the disc body, the neck portion of the flange disc is connected with the disc body, the disc body is a circular disc structure, and the circular disc structure is characterized in that: a stress-eliminating slot is arranged on the disc body along the radial direction, and the disc body is divided into regular or irregular arc blocks by the stress-eliminating slot.

[0006] According to the above scheme, the stress-eliminating slot is a straight line, an arc line or any other arbitrary curve; and the width of the stress-eliminating slot is 1-6 mm.

[0007] According to the above scheme, the disc body is a hollow structure, comprising an inner circular disc and an outer circular disc, and a gap is arranged between the inner circular disc and the outer circular disc, and a connecting rib connected with the inner circular disc and the outer circular disc is arranged in the gap.

[0008] According to the above scheme, a connecting block connected with the adjacent two arc blocks and connected with the inner circular disc and the outer circular disc is arranged in the gap corresponding to the stress-eliminating slot.

[0009] According to the above scheme, the connecting ribs are arranged and distributed uniformly from the inside to the outside along the inner circular disc and the outer circular disc, and the cross-sectional size of the connecting ribs increases from the inside to the outside.

[0010] According to the above scheme, the thickness of the connecting block is smaller than the distance between the inner circular disc and the outer circular disc, and a stress-eliminating gap is arranged between the connecting block and the inner circular disc and the outer circular disc.

[0011] According to the above scheme, the connecting block is divided into an inner connecting block and an outer connecting block, and is arranged at the outer edge and the inner edge of the inner and outer annular plates respectively.

[0012] According to the above scheme, the flange plate is provided with bolt holes on the end face, and is connected with the hub through bolts.

[0013] According to the above scheme, the flange plate is provided with a stop on the end face, and the stop on the hub is configured to limit the position.

[0014] The brake disc of the present application has the following advantages: 1. The brake disc can absorb thermal expansion stress, the disc body in a circular plate structure is divided into regular or irregular arc blocks, so that the stress existing in the entire disc body is dispersed and eliminated, deformation and cracking are not easy to occur under thermal expansion stress and low temperature conditions, stress concentration on the friction surface is avoided, and deformation space is reserved for thermal expansion and contraction of the brake disc, which can effectively solve the problems of thermal expansion and contraction, stress concentration and cracking of the brake disc; 2. The disc body is composed of a plurality of arc blocks, the stress relief seam is formed on the friction surface to form a heat dissipation air duct, and a gap is left between the connecting block and the inner and outer annular plates, which not only improves the heat dissipation efficiency, avoids overheating of the brake disc and improves the braking performance, but also enables the brake surface to better adhere to the brake friction plate, increases the friction surface and makes the wear of the disc body more uniform; 3. The hollow structure disc body forms a drainage channel in the gap between the connecting ribs, which can timely drain water from the brake surface when the brake disc is used in rainy or water-involved conditions, avoids traffic accidents caused by significant increase in brake distance, and has light weight. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the brake disc of an embodiment of the present application.

[0016] Figure 2 It is a front view of the brake disc of an embodiment of the present application.

[0017] Figure 3 It is a side view of the brake disc of an embodiment of the present application.

[0018] Figure 4 It is an internal view of the brake disc of an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to better understand the present application, the present application will be further described below in combination with the drawings and embodiments.

[0020] As Figures 1-4The brake disc shown in the drawing comprises a disc body and a flange plate 1 arranged on one side of the disc body, the neck of the flange plate is connected with the disc body, the disc body is a circular disc structure, and a stress relief slot 2 is arranged on the disc body along the radial direction to divide the disc body into regular or irregular arc blocks 3.

[0021] The stress relief slot is a straight line, an arc line or any other arbitrary curve, and the width of the stress relief slot is 1-6 mm.

[0022] The disc body is a hollow structure comprising an inner circular disc 4 and an outer circular disc 5, and a gap is arranged between the inner and outer circular discs, and a connecting rib 6 connected with the inner and outer circular discs is arranged in the gap.

[0023] A connecting block 7 connected with the adjacent two arc blocks and connected with the inner and outer circular discs is arranged in the gap corresponding to the stress relief slot. The adjacent arc blocks are spliced by the connecting block to form a complete disc body.

[0024] The connecting ribs are arranged and distributed uniformly from the inside to the outside along the inner and outer circular discs, and the cross-sectional size of the connecting ribs increases from the inside to the outside.

[0025] The thickness of the connecting block is smaller than the distance between the inner and outer circular discs, and a stress relief gap 8 is arranged between the two sides of the connecting block and the inner and outer circular discs.

[0026] The connecting block is divided into an inner connecting block and an outer connecting block, and is arranged at the outer edge and the inner edge of the inner and outer circular discs respectively, and the flange plate is connected with the inner connecting block.

[0027] A bolt hole 9 is arranged on the end face of the flange plate, and the flange plate is connected with the hub through the bolt.

[0028] A stop 10 is arranged on the flange plate to limit the position of the stop on the hub.

Claims

1. A brake disc absorbing thermal expansion stresses, comprising a disc body and a flange, the flange being arranged on one side of the disc body, the neck of the flange being connected to the disc body, the disc body having a circular ring disc shape, characterized in that: The annular disc structure is divided into regular or irregular arc blocks by radially arranging the relief joints on the disc body of the annular disc structure; the disc body is a hollow structure, comprising an inner annular disc and an outer annular disc, and a gap is left between the inner and outer annular discs; connecting ribs are arranged in the gap and connected to the inner and outer annular discs; connecting blocks are arranged in the gap and connected to the adjacent two arc blocks and the inner and outer annular discs; the thickness of the connecting blocks is less than the distance between the inner and outer annular discs; the connecting blocks are divided into inner and outer connecting blocks and arranged at the outer edge and the inner edge of the inner and outer annular discs; the flange disc is connected to the inner connecting blocks; the connecting ribs are arranged in the inner and outer annular discs and distributed uniformly from inside to outside; the cross-sectional size of the connecting ribs increases from inside to outside.

2. A brake disc which absorbs thermal expansion stresses as claimed in claim 1, characterized in that The relief joints are straight lines, arc lines or other arbitrary curves; the width of the relief joints is 1-6 mm.

3. A brake disc to absorb thermal expansion stresses as claimed in claim 1, characterized in that The flange disc is provided with bolt holes on the end face and connected to the wheel hub by bolts.

4. A brake disc which absorbs thermal expansion stresses as claimed in claim 3, characterised in that The flange disc is provided with a stopper configured with the stopper on the wheel hub to limit the position.

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