CN215762960U - Brake disc connection structure of hot adaptation - Google Patents
Brake disc connection structure of hot adaptation Download PDFInfo
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- CN215762960U CN215762960U CN202022161198.5U CN202022161198U CN215762960U CN 215762960 U CN215762960 U CN 215762960U CN 202022161198 U CN202022161198 U CN 202022161198U CN 215762960 U CN215762960 U CN 215762960U
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- 230000006978 adaptation Effects 0.000 title claims description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 16
- 230000003044 adaptive effect Effects 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses a thermal-adaptive brake disc connecting structure which comprises a fastening bolt and two fastening sleeves, wherein one end of each fastening sleeve is provided with an axial limiting part, sleeve counter bores are arranged in the fastening sleeves, a fastening counter bore is arranged on a friction disc, a fastening through hole is arranged on a supporting disc, one fastening sleeve is arranged in the fastening counter bore and the fastening through hole in one side in a penetrating manner, the other fastening sleeve is arranged in the fastening counter bore and the fastening through hole in the other side in a penetrating manner, each axial limiting part is abutted against the step surface of the corresponding fastening counter bore, the fastening bolt is arranged in the two sleeve counter bores in a penetrating manner, the nut of the fastening bolt is abutted against the step surface of one sleeve counter bore, the fastening nut at the tail part of the fastening bolt is abutted against the step surface of the other sleeve counter bore, the surface of the fastening sleeve is provided with an axial slit, and the axial slit penetrates through the cylinder wall of the fastening sleeve. The utility model can effectively prevent the cold and hot circular extrusion of the circumferential and radial thermal expansion of the brake disc, and improve the service life of the brake disc.
Description
Technical Field
The utility model relates to the technical field of vehicle braking devices, in particular to a thermally adaptive brake disc connecting structure.
Background
At present, the braking working condition of high-speed and heavy-load vehicles is severe, the braking requirement of a general integrally-formed brake disc is difficult to meet, and the design trend of the brake disc is that the brake disc adopts a composite structure mode. The composite structure brake disc generally comprises a support disc and a friction disc, wherein the support disc is arranged in the middle and generally made of common metal materials and mainly plays a role in supporting the brake disc; the friction discs are arranged on two sides of the support disc, are generally made of new materials and mainly play a role in friction braking; the support plate and the friction disc are overlapped and locked through a fastening bolt. With the structure, when the vehicle brakes at a high speed, the brake disc expands due to heat, the fastening bolt is pressed by the friction disc and the support disc, and the friction disc, the support disc or the bolt is easily damaged due to no thermal expansion gap.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a heat-adaptive brake disc connecting structure which can effectively prevent the circumferential and radial thermal expansion of a brake disc from cold and hot cyclic extrusion, thereby saving the operation and maintenance cost.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a brake disc connecting structure with thermal adaptation comprises a supporting disc and friction discs respectively attached to two sides of the supporting disc, the connecting structure comprises fastening bolts and two fastening sleeves, one end of each fastening sleeve is provided with an axial limiting part, sleeve countersunk holes are formed in the fastening sleeves, fastening countersunk holes are formed in the friction discs, fastening through holes are formed in the supporting disc, one fastening sleeve is arranged in the fastening countersunk hole and the fastening through hole in one side in a penetrating manner, the other fastening sleeve is arranged in the fastening countersunk hole and the fastening through hole in the other side in a penetrating manner, each axial limiting part is abutted to the step surface of the corresponding fastening countersunk hole, the fastening bolts are arranged in the two sleeve countersunk holes in a penetrating manner, the nuts of the fastening bolts are abutted to the step surface of one sleeve countersunk hole, and the fastening nuts at the tail parts of the fastening bolts are abutted to the step surface of the other sleeve countersunk hole, the surface of the fastening sleeve is provided with an axial slit which penetrates through the wall of the fastening sleeve.
As a further improvement of the technical scheme, the axial seam is a slant seam, a wave seam or a straight seam relative to the axis of the fastening sleeve.
As a further improvement of the technical scheme, a sleeve gasket is arranged between the axial limiting part of the fastening sleeve and the step surface of the fastening counter bore.
As a further improvement of the technical scheme, the surface of the sleeve gasket is coated with a high-temperature-resistant heat-insulating glue layer.
As a further improvement of the technical scheme, the nut end and the fastening nut end of the fastening bolt are both provided with fastening elastic cushions.
As a further improvement of the above technical solution, the sleeve counter bore of the fastening sleeve is a regular polygon, a rectangle, a circle or an ellipse.
As a further improvement of the above technical solution, the fastening sleeve and the friction disc are in transition fit.
A brake disc connecting structure with thermal adaptation comprises a supporting disc and friction discs respectively attached to two sides of the supporting disc, the connecting structure comprises a double-end fastening stud and two fastening sleeves, one end of each fastening sleeve is provided with an axial limiting part, sleeve countersunk holes are formed in the fastening sleeves, fastening countersunk holes are formed in the friction discs, fastening through holes are formed in the supporting disc, one fastening sleeve is arranged in the fastening countersunk hole and the fastening through hole in one side in a penetrating manner, the other fastening sleeve is arranged in the fastening countersunk hole and the fastening through hole in the other side in a penetrating manner, each axial limiting part is abutted to the step face of the corresponding fastening countersunk hole, the double-end fastening stud is arranged in the two sleeve countersunk holes in a penetrating manner, a fastening nut at the head end of the double-end fastening stud is abutted to the step face of one sleeve countersunk hole, and a fastening nut at the tail end of the double-end fastening stud is abutted to the step face of the other sleeve countersunk hole, the surface of the fastening sleeve is provided with an axial slit which penetrates through the wall of the fastening sleeve.
As a further improvement of the technical scheme, the fastening nuts at the two ends of the double-end fastening stud are opposite in screwing direction.
As a further improvement of the technical scheme, the fastening nut is a customized nut with an inner hexagon at one end and a threaded hole at the other end.
Compared with the prior art, the utility model has the advantages that:
according to the thermally adaptive brake disc connecting structure, the axial slits are formed in the surface of the fastening sleeve, when the brake disc is braked at a high speed, the brake disc is heated and expanded, the axial slits of the fastening sleeve are compressed and reduced by the friction disc and the supporting disc, and after the brake disc is cooled, the axial slits are freely opened again and return to an initial state, so that cold and hot cyclic extrusion of circumferential and radial thermal expansion of the brake disc can be effectively prevented, the fastening sleeve is protected from deformation or cracking caused by thermal expansion extrusion, and the operation and maintenance cost is saved.
Drawings
Fig. 1 is a schematic view of the working state of the thermally adaptive brake disc bolting structure according to embodiment 1 of the present invention.
Fig. 2 is a view a-a of fig. 1.
Fig. 3 is a schematic structural view of a fastening sleeve in embodiment 1 of the present invention (a part is a three-dimensional structure, and b part is a longitudinal section).
Fig. 4 is a schematic view of two other constructions of the fastening sleeve of the present invention.
Fig. 5 is a schematic view of the working state of the thermally adaptive brake disc stud connection structure according to embodiment 2 of the present invention.
Fig. 6 is a schematic view of the working state of the thermally adaptive brake disc stud connection structure according to embodiment 3 of the present invention.
Fig. 7 is a schematic structural view of a custom nut according to embodiment 3 of the present invention.
The reference numerals in the figures denote:
1. a support disc; 101. fastening through holes; 2. a friction disk; 201. fastening the counter sink; 3. a connecting structure; 301. an axial limiting part; 302. a sleeve counterbore; 31. fastening a bolt; 311. fastening a nut; 32. fastening the sleeve; 321. axially slotting; 33. a stud; 35. a sleeve gasket; 36. fastening the elastic pad; 37. and (4) customizing the nut.
Detailed Description
The utility model is described in further detail below with reference to the figures and specific examples of the specification.
Example 1
As shown in fig. 1 to 3, the brake disc connection structure of thermal adaptation of this embodiment, the brake disc includes support disc 1 and the friction disc 2 of laminating respectively in the both sides of support disc 1, connection structure 3 includes fastening bolt 31 and two fastening sleeve 32, fastening sleeve 32 one end is equipped with axial spacing portion 301 and is equipped with sleeve counter sink 302 in the fastening sleeve 32, be equipped with fastening counter sink 201 on the friction disc 2, be equipped with fastening through hole 101 on the support disc 1, a fastening sleeve 32 wears to establish in one side fastening counter sink 201 and fastening through hole 101, another fastening sleeve 32 wears to establish in opposite side fastening counter sink 201 and fastening through hole 101, and the step face butt of each axial spacing portion 301 and the fastening counter sink 201 that corresponds.
The two fastening sleeves 32 are arranged coaxially in opposite directions and are abutted against each other, and the two axial limiting parts 301 face outwards. The fastening bolt 31 is arranged in the two sleeve countersunk holes 302 in a penetrating manner, the nut of the fastening bolt 31 is abutted against the step surface of one sleeve countersunk hole 302, the fastening nut 311 at the tail of the fastening bolt 31 is abutted against the step surface of the other sleeve countersunk hole 302, and the fastening nut 311 is screwed and unscrewed, so that the clamping and the dismounting of the brake disc can be realized. The surface of the fastening sleeve 32 is provided with an axial slit 321, and the axial slit 321 penetrates through the wall of the fastening sleeve 32 in both radial and axial directions. The purpose of the axial slit 321 is: when the brake disc is braked at a high speed, the brake disc is heated and expanded, the axial slit 321 of the fastening sleeve 32 is extruded and reduced by the friction disc and the support disc, and after the brake disc is cooled, the axial slit 321 is freely expanded and returns to an initial state, so that the cold and hot cyclic extrusion of the circumferential and radial thermal expansion of the brake disc can be effectively prevented, and the fastening sleeve is protected from being deformed or cracked due to the hot expansion extrusion. The fastening sleeve 32 and the friction disc 2 are in transition fit, and the opening of the fastening sleeve 32 can be properly reduced along with the friction disc 2 extruded by thermal expansion at high temperature, so that damage to the extrusion of the fastening sleeve 32 caused by thermal expansion stress is reduced, meanwhile, torque can be transmitted, and the shearing resistance of the connecting structure is improved.
In a specific application example, the axial slits 321 may be oblique slits or wavy slits or straight slits with respect to the axis of the fastening sleeve 32, and in this embodiment, the axial slits 321 are straight slits.
In this embodiment, the inner countersunk portion of the sleeve countersunk hole 302 can not only completely sink the fastening bolt 31 into the fastening sleeve 32, but also reduce the heat transfer to the connecting structure of the fastening bolt 31 through the heat insulation effect of the fastening sleeve 32. The step portion of the outer counter-sunk portion of the sleeve counter-sunk hole 302 abuts against the counter-sunk step of the friction disc 2 to achieve effective coupling of the fastening sleeve 32 and the friction disc 2 and to suitably increase the contact area of the friction disc 2 and the coupling structure.
Wherein, the outer countersunk portion of the sleeve counterbore 302 is in a regular hexagon structure (as shown in fig. 3). It should be noted that, in addition to the present embodiment, in other embodiments, the countersunk portion outside the sleeve countersunk hole 302 may also be a long-waist-shaped quadrilateral structure (part c in fig. 4), or a circular structure (part d in fig. 4), or an oval shape.
In this embodiment, a sleeve gasket 35 is disposed between the axial limiting portion 301 of the fastening sleeve 32 and the step surface of the fastening counter bore 201. In order to reduce the heat transmission to the fastening bolt 31 and the fastening nut 311, the surface of the sleeve gasket 35 is coated with a high temperature resistant heat insulation glue layer to reduce the heat conduction amount of the friction disc 2 and reduce the thermal expansion deformation amount of the fastening sleeve 32, and besides this embodiment, the sleeve gasket 35 may also be made of a material with good heat insulation property.
In this embodiment, the nut end of the fastening bolt 31 and the fastening nut 311 are provided with fastening elastic washers 36.
The connecting method of the thermally adaptive brake disc connecting structure comprises the following steps:
the hole positions of the friction disc 2 and the support disc 1 are aligned and vertically arranged in the radial direction, the sleeve gaskets 35 are respectively arranged in fastening countersunk holes 201 of the friction disc 2 which are symmetrically and fixedly arranged, the fastening sleeve 32 is inserted into the corresponding fastening countersunk hole 201, a fastening elastic pad 36 is arranged in a sleeve countersunk hole 302 of the fastening sleeve 32, then a fastening bolt 31 and a fastening nut 311 are arranged, the fastening nut 311 is screwed to complete locking, and the overlapped friction disc 2 and the support disc 1 are clamped and fixed.
Example 2
As shown in fig. 5, the difference between the thermally adaptive brake disk connection structure of the present embodiment and embodiment 1 is:
in the present embodiment, the fastening bolt 31 is replaced with a stud fastening bolt 33, and fastening nuts 311 are disposed on both ends of the stud fastening bolt 33. The fastening nut 311 at the head end of the stud bolt 33 abuts against the step surface of one sleeve counterbore 302, and the fastening nut 311 at the tail end abuts against the step surface of the other sleeve counterbore 302. The tightening nuts 311 at both ends can be tightened.
In this embodiment, the tightening nuts 311 at both ends of the stud bolt 33 are turned in opposite directions, so that when the tightening nut 311 at one end is tightened, the tightening nut 311 at the other end is automatically tightened.
Otherwise, the parts which are not described are basically the same as those in embodiment 1, and are not described again.
Example 3
As shown in fig. 6 and 7, the difference between the thermally adaptive brake disk connection structure of the present embodiment and embodiment 2 is:
in this embodiment, custom nuts 37 are provided on both ends of the stud bolt 33. The custom nut 37 has a hexagon socket at one end and a threaded hole at the other end. The custom nut 37 at the head end of the stud 33 abuts the step surface of one sleeve counterbore 302, and the custom nut 317 at the tail end abuts the step surface of the other sleeve counterbore 302. Tightening the custom nuts 37 at both ends can lock.
In this embodiment, the custom nuts 317 on both ends of the stud 33 are threaded in opposite directions so that tightening of the custom nut 317 on one end automatically locks the custom nut 317 on the other end.
Otherwise, the parts which are not described are basically the same as those in embodiment 1, and are not described again.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. A brake disc connection structure of hot adaptation, the brake disc includes supporting disk (1) and respectively laminates friction disk (2) in the both sides of supporting disk (1), its characterized in that: the connecting structure (3) comprises fastening bolts (31) and two fastening sleeves (32), one end of each fastening sleeve (32) is provided with an axial limiting part (301), a sleeve counter bore (302) is arranged in each fastening sleeve (32), a fastening counter bore (201) is arranged on the friction disc (2), a fastening through hole (101) is arranged on the supporting disc (1), one fastening sleeve (32) is arranged in the fastening counter bore (201) and the fastening through hole (101) in a penetrating manner, the other fastening sleeve (32) is arranged in the fastening counter bore (201) and the fastening through hole (101) in a penetrating manner, each axial limiting part (301) is abutted to the step surface of the corresponding fastening counter bore (201), the fastening bolts (31) are arranged in the two sleeve counter bores (302) in a penetrating manner, and the nuts of the fastening bolts (31) are abutted to the step surfaces of the sleeve counter bores (302), and a fastening nut (311) at the tail part of the fastening bolt (31) is abutted against the step surface of the other sleeve counter bore (302), an axial slit (321) is formed in the surface of the fastening sleeve (32), and the axial slit (321) penetrates through the cylinder wall of the fastening sleeve (32).
2. The thermally adaptive brake disc connection according to claim 1, wherein: the axial seam (321) is a slant seam, a wave seam or a straight seam relative to the axis of the fastening sleeve (32).
3. The thermally adaptive brake disc connection according to claim 1, wherein: and a sleeve gasket (35) is arranged between the axial limiting part (301) of the fastening sleeve (32) and the step surface of the fastening counter bore (201).
4. The thermally adaptive brake disc connection according to claim 3, wherein: and a high-temperature-resistant heat-insulating glue layer is coated on the surface of the sleeve gasket (35).
5. The thermally adapted brake disc connection according to any one of claims 1 to 4, wherein: and the nut end and the fastening nut (311) end of the fastening bolt (31) are both provided with fastening elastic pads (36).
6. The thermally adapted brake disc connection according to any one of claims 1 to 4, wherein: the sleeve counter bore (302) of the fastening sleeve (32) is regular polygon, rectangle, circle or ellipse.
7. The thermally adapted brake disc connection according to any one of claims 1 to 4, wherein: the fastening sleeve (32) and the friction disc (2) are in transition fit.
8. A brake disc connection structure of hot adaptation, the brake disc includes supporting disk (1) and respectively laminates friction disk (2) in the both sides of supporting disk (1), its characterized in that: the connecting structure (3) comprises a double-end fastening stud (33) and two fastening sleeves (32), one end of each fastening sleeve (32) is provided with an axial limiting part (301) and a sleeve counter bore (302) in the fastening sleeve (32), a fastening counter bore (201) is arranged on the friction disc (2), a fastening through hole (101) is arranged on the supporting disc (1), one fastening sleeve (32) is arranged in the fastening counter bore (201) and the fastening through hole (101) in a penetrating manner, the other fastening sleeve (32) is arranged in the fastening counter bore (201) and the fastening through hole (101) in a penetrating manner, each axial limiting part (301) is abutted against the step surface of the corresponding fastening counter bore (201), the double-end fastening stud (33) is arranged in the two sleeve counter bores (302) in a penetrating manner, and the fastening nut (311) at the head end of the double-end fastening stud (33) is abutted against the step surface of one sleeve counter bore (302), and a fastening nut (311) at the tail end is abutted against the step surface of the other sleeve counter bore (302), an axial opening (321) is arranged on the surface of the fastening sleeve (32), and the axial opening (321) penetrates through the cylinder wall of the fastening sleeve (32).
9. The thermally adaptive brake disc connection according to claim 8, wherein: and the fastening nuts (311) at the two ends of the double-end fastening stud (33) are opposite in screwing direction.
10. The thermally adaptive brake disc connection according to claim 8, wherein: the fastening nut (311) is a customized nut (37) with an inner hexagon at one end and a threaded hole at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022161198.5U CN215762960U (en) | 2020-09-27 | 2020-09-27 | Brake disc connection structure of hot adaptation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022161198.5U CN215762960U (en) | 2020-09-27 | 2020-09-27 | Brake disc connection structure of hot adaptation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215762960U true CN215762960U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022161198.5U Active CN215762960U (en) | 2020-09-27 | 2020-09-27 | Brake disc connection structure of hot adaptation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215762960U (en) |
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2020
- 2020-09-27 CN CN202022161198.5U patent/CN215762960U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231115 Address after: Room 356, No. 999 Xufu Avenue, Gaoting Town, Daishan County, Zhoushan City, Zhejiang Province, 316200 (Daixi District) Patentee after: Mouhang (Daishan) Carbon Ceramics Co.,Ltd. Address before: 100097 No.308, 3rd floor, building 1, yard 6, Yuanda Road, Haidian District, Beijing Patentee before: Zhongjing Jitai (Beijing) Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240508 Address after: 264117, No. 60 Dayao Road, Dayao Street, Muping District, Yantai City, Shandong Province Patentee after: Mou Junxiang Aviation Carbon Ceramic Composite Materials (Yantai) Co.,Ltd. Country or region after: China Address before: Room 356, No. 999 Xufu Avenue, Gaoting Town, Daishan County, Zhoushan City, Zhejiang Province, 316200 (Daixi District) Patentee before: Mouhang (Daishan) Carbon Ceramics Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |