CN107420463B - Braking device with double brake pads - Google Patents
Braking device with double brake pads Download PDFInfo
- Publication number
- CN107420463B CN107420463B CN201710281268.0A CN201710281268A CN107420463B CN 107420463 B CN107420463 B CN 107420463B CN 201710281268 A CN201710281268 A CN 201710281268A CN 107420463 B CN107420463 B CN 107420463B
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- Prior art keywords
- brake
- cylinder
- torsion spring
- transmission seat
- reverse
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a braking device with double brake pads, which comprises a brake disc and pneumatic brake components respectively arranged on two sides of the brake disc, wherein each pneumatic brake component comprises a mounting flange, an air cylinder component, a brake cylinder, a transmission seat, a steel back, friction plates and a reverse expansion torsion spring component, the transmission seat and the steel back are movably arranged in the brake cylinder, one end, far away from the steel back, of the transmission seat is in axial butt joint with a piston of the air cylinder component, one end, far away from the transmission seat, of the steel back is fixedly connected to the friction plates, the brake disc is clamped between the friction plates of the two pneumatic brake components, and the reverse expansion torsion spring component is sleeved between the transmission seat and the steel back. The invention has simple and reasonable structure, even stress of the brake disc, difficult damage of the piston, good braking effect and long service life.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a braking device with double brake pads.
Background
Brake pads are one of the most common and critical components of automobiles and are well known. In the braking process of the brake pad, the friction pad and the brake disc are mutually rubbed to generate the braking force of the automobile. The brake pad has various types and different structures, and the pneumatic brake pad is one of the brake pads. The pneumatic brake pad is commonly applied in the field of automobile manufacturing, and the pneumatic brake pad drives a piston to move by utilizing air pressure so as to drive a friction plate to move, so that a brake disc is braked. For example, a cantilever type brake disc friction plate device disclosed in application number 201620299668.5, and a brake device with double brake pads disclosed in application number 201620261509.6, are all affiliated to pneumatic brake pads. At present, the existing pneumatic brake pad has certain defects due to unreasonable structural arrangement: firstly, a single piston structure is generally adopted, so that uneven stress of a brake disc is easily caused during working, and the braking effect is influenced; second, the friction disc passes through the steel backing and directly links to each other with the piston is fixed, and when friction disc and brake disc contact were in the twinkling of an eye, under the drive of friction disc, can exist great circumference effort between piston and the cylinder barrel to easily cause the damage of piston, influence the life of brake disc.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a braking device with double brake pads.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The brake device with the double brake pads comprises a brake disc and pneumatic brake assemblies respectively arranged on two sides of the brake disc, wherein the two pneumatic brake assemblies have the same structure;
the pneumatic brake assembly comprises a mounting flange, an air cylinder assembly, a brake cylinder, a transmission seat, a steel back, a friction plate and a reverse expansion torsion spring assembly; the cylinder assembly comprises a cylinder barrel, a cylinder cover and a piston, wherein the cylinder barrel and the brake cylinder are oppositely inserted and fixed in the mounting flange, the cylinder cover is fixedly connected with the cylinder barrel, the piston is movably arranged in the cylinder barrel, a cavity is formed among the cylinder barrel, the cylinder cover and the piston, and the cylinder cover is provided with an air inlet communicated with the cavity; the transmission seat and the steel back are movably arranged in the brake cylinder, the transmission seat is in anti-rotation fit with the brake cylinder, one end, far away from the steel back, of the transmission seat is in axial abutting joint with the piston, and one end, far away from the transmission seat, of the steel back is fixedly connected to the friction plate;
the reverse-expansion torsion spring assembly is sleeved between the transmission seat and the steel back and comprises a reverse-expansion torsion spring A and a reverse-expansion torsion spring B which are wound together, the expansion directions of the reverse-expansion torsion spring A and the reverse-expansion torsion spring B are opposite, a first clamping groove and a second clamping groove are formed in a column section of the transmission seat, a third clamping groove and a fourth clamping groove are formed in a column section of the steel back, a first bending pin is arranged at one end of the reverse-expansion torsion spring A, a third bending pin is arranged at the other end of the reverse-expansion torsion spring A, a second bending pin is arranged at one end of the reverse-expansion torsion spring B, a fourth bending pin is arranged at the other end of the reverse-expansion torsion spring B, the first bending pin is fixed in the first clamping groove, the second bending pin is fixed in the second clamping groove, the third bending pin is fixed in the third clamping groove, and the fourth bending pin is fixed in the fourth clamping groove;
the brake disc is clamped between the friction plates of the two pneumatic brake assemblies.
Further, an exhaust passage matched with the piston is arranged in the cylinder barrel.
Further, a gasket is arranged between the cylinder barrel and the brake cylinder.
Further, a plurality of first steel balls are arranged between the piston and the transmission seat, a plurality of first half ball grooves which are in one-to-one correspondence with the first steel balls are arranged on the corresponding end face of the piston, and the first steel balls are arranged in the first half ball grooves.
Further, a plurality of second steel balls are arranged between the transmission seat and the steel back, a plurality of second hemispherical grooves which are in one-to-one correspondence with the second steel balls are arranged on the corresponding end surfaces of the steel back, and the second steel balls are arranged in the second hemispherical grooves.
Further, a pair of limiting lugs are arranged on the periphery of the transmission seat, and limiting sliding grooves matched with the limiting lugs are formed in the inner wall of the brake cylinder.
The beneficial effects of the invention are as follows: according to the braking device with the double brake pads, the braking can be effectively realized no matter the automobile is in a forward or backward state before braking, particularly, during braking, high-pressure gas is filled into the air inlet hole to promote the piston to axially move, the steel backing is pushed to synchronously move through the transmission seat in the moving process of the piston, the friction plate is contacted with the brake disc, the brake disc drives the steel backing to rotate under the action of friction force at the moment that the friction plate is contacted with the brake disc, if the automobile is in a forward state before braking, the steel backing positively rotates relative to the transmission seat at the moment, the steel backing overcomes the initial friction force between the reverse-expansion torsion spring A and the brake cylinder and promotes the reverse-expansion torsion spring A to expand, so that larger friction force is generated between the reverse-expansion torsion spring A and the brake cylinder, and braking action is realized, and the reverse-expansion torsion spring B is always in a contracted state in the process and does not generate braking force; correspondingly, if the automobile is in a retreating state before braking, the steel back is reversed relative to the transmission seat, the steel back overcomes the initial friction force between the reverse expansion torsion spring B and the brake cylinder, and promotes the reverse expansion torsion spring B to expand, so that larger friction force is generated between the reverse expansion torsion spring B and the brake cylinder, braking action is realized, and the reverse expansion torsion spring A is always in a contracted state in the process, so that the reverse expansion torsion spring A does not generate braking force.
According to the invention, by adopting the double-piston structure, the stress on the two ends of the brake disc is relatively uniform during braking, so that the braking effect is ensured; in addition, compared with the prior art that the steel back is directly and fixedly connected with the piston, the piston is axially abutted with the steel back through the transmission seat, and the steel back can not drive the piston to rotate during braking, so that the circumferential acting force between the piston and the cylinder barrel is smaller, the damage of the piston is avoided, and the service life of the piston is ensured. The invention has simple and reasonable structural arrangement.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a transmission seat of the present invention.
Fig. 3 is a schematic view of the structure of the steel back of the present invention.
FIG. 4 is a schematic structural view of the counter-expanding torsion spring assembly of the present invention.
In fig. 1-4: 1. a brake disc; 2. a pneumatic brake assembly; 21. a mounting flange; 22. a cylinder; 221. an exhaust passage; 23. a cylinder cover; 231. an air inlet hole; 24. a piston; 25. a brake cylinder; 26. a transmission seat; 261. a limit lug; 262. a first clamping groove; 27. a steel back; 271. a third clamping groove; 272. a fourth clamping groove; 273. a second hemispherical groove; 28. a friction plate; 29. a reverse expansion torsion spring component; 291. a reverse expansion torsion spring A; 2911. a first bent leg; 292. a reverse expansion torsion spring B; 2921. a second bent leg; 30. a gasket; 31. a chamber; 32. a first steel ball.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The brake device with double brake pads as shown in fig. 1 to 4 comprises a brake disc 1 and pneumatic brake assemblies 2 respectively arranged on two sides of the brake disc 1, wherein the two pneumatic brake assemblies 2 have the same structure, and each pneumatic brake assembly 2 comprises a mounting flange 21, a cylinder assembly, a brake cylinder 25, a transmission seat 26, a steel back 27, a friction plate 28 and a reverse expansion torsion spring assembly 29.
The cylinder assembly comprises a cylinder barrel 22, a cylinder cover 23 and a piston 24, wherein the cylinder barrel 22 and a brake barrel 25 are inserted and fixed in a mounting flange 21, and a gasket 30 is arranged between the cylinder barrel 22 and the brake barrel 25 for improving assembly precision. The cylinder cover 23 is fixedly connected with the cylinder 22, the piston 24 is movably arranged in the cylinder 22, a cavity 31 is formed among the cylinder 22, the cylinder cover 23 and the piston 24, and the cylinder cover 23 is provided with an air inlet 231 communicated with the cavity 31. The cylinder 22 is provided with an exhaust channel 221 matched with the piston 24, when high-pressure gas is filled into the air inlet 231 to drive the piston 24 to axially move, the exhaust channel 221 can exhaust the gas in the cylinder 22 for restricting the movement of the piston 24 so as to ensure the sensitivity of the movement of the piston 24, and when the piston 24 is reset, external air can enter the cylinder 22 through the exhaust channel 221 so as to ensure the air pressure balance at two ends of the piston 24.
The transmission seat 26 and the steel back 27 are movably arranged in the brake cylinder 25, the transmission seat 26 is in rotation-stopping fit with the brake cylinder 25, specifically, a pair of limit lugs 261 are arranged on the periphery of the transmission seat 26, limit sliding grooves (not shown in the figure) matched with the limit lugs 261 are formed in the inner wall of the brake cylinder 25, and relative rotation between the transmission seat 26 and the brake cylinder 25 is effectively avoided through the limit lugs 261 and the limit sliding grooves. The end of the transmission seat 26 far away from the steel back 27 is in axial abutment with the piston 24, the end of the steel back 27 far away from the transmission seat 26 is fixedly connected to the friction plates 28, and the brake disc 1 is clamped between the friction plates 28 of the two pneumatic brake assemblies 2.
The reverse tension torsion spring assembly 29 is sleeved between the transmission seat 26 and the steel back 27, the reverse tension torsion spring assembly 29 comprises a reverse tension torsion spring A291 and a reverse tension torsion spring B292 which are wound together, the expansion directions of the reverse tension torsion spring A291 and the reverse tension torsion spring B292 are opposite, a column section of the transmission seat 26 is provided with a first clamping groove 262 and a second clamping groove (not shown in the figure), a column section of the steel back 27 is provided with a third clamping groove 271 and a fourth clamping groove 272, one end of the reverse tension torsion spring A291 is provided with a first bending pin 2911, the other end of the reverse tension torsion spring A291 is provided with a third bending pin (not shown in the figure), one end of the reverse tension torsion spring B292 is provided with a second bending pin 2921, the other end of the reverse tension torsion spring B292 is provided with a fourth bending pin (not shown in the figure), the first bending pin 2911 is fixed in the first clamping groove 262, the second bending pin 2921 is fixed in the second clamping groove, the third bending pin is fixed in the third clamping groove 271, and the fourth bending pin is fixed in the fourth clamping groove 272.
Preferably, in this embodiment, in order to reduce the contact area between the piston 24 and the transmission seat 26 and reduce the abrasion caused by friction, a plurality of first steel balls 32 are disposed between the piston 24 and the transmission seat 26, and a plurality of first half ball grooves corresponding to the first steel balls 32 one by one are disposed on the corresponding end surfaces of the piston 24, and the first steel balls 32 are installed in the first half ball grooves; correspondingly, in order to reduce the contact area between the transmission seat 26 and the steel back 27 and reduce the abrasion caused by friction when the transmission seat 26 and the steel back 27 rotate relatively, a plurality of second steel balls (not shown in the figure) are arranged between the transmission seat 26 and the steel back 27, a plurality of second hemispherical grooves 273 corresponding to the second steel balls one by one are arranged on the corresponding end surfaces of the steel back 27, and the second steel balls are arranged in the second hemispherical grooves 273.
According to the braking device with the double brake pads, the braking can be effectively realized no matter the automobile is in a forward or backward state before braking, particularly, during braking, high-pressure gas is filled into the air inlet hole 231 to promote the piston 24 to axially move, the steel backing 27 is pushed to synchronously move through the transmission seat 26 in the moving process of the piston 24, the friction plate 28 is contacted with the brake disc 1, the brake disc 1 drives the steel backing 27 to rotate through the friction plate 28 at the moment that the friction plate 28 is contacted with the brake disc 1 under the action of friction force, if the automobile is in a forward state before braking, the steel backing 27 positively rotates relative to the transmission seat 26 at the moment, the steel backing 27 overcomes the initial friction force between the reverse-expansion torsion spring A291 and the brake cylinder 25, and the reverse-expansion torsion spring A291 is promoted to expand, so that larger friction force is generated between the reverse-expansion torsion spring A291 and the brake cylinder 25, and braking action is realized, and the reverse-expansion torsion spring B292 is always in a contracted state in the process, so that braking force is not generated; correspondingly, if the car is in a retreating state before braking, at this time, the steel back 27 is reversed relative to the transmission seat 26, the steel back 27 overcomes the initial friction force between the reverse expansion torsion spring B292 and the brake cylinder 25, and promotes the reverse expansion torsion spring B292 to expand, so that a larger friction force is generated between the reverse expansion torsion spring B292 and the brake cylinder 25, and braking action is realized, and in this process, the reverse expansion torsion spring a291 is always in a contracted state, so that the reverse expansion torsion spring a291 cannot generate braking force.
According to the invention, by adopting the double-piston structure, the stress on the two ends of the brake disc 1 is relatively uniform during braking, so that the braking effect is ensured; in addition, compared with the prior art that the steel back 27 is directly fixedly connected with the piston 24, the piston 24 is axially abutted with the steel back 27 through the transmission seat 26, and the steel back 27 can not drive the piston 24 to rotate during braking, so that the circumferential acting force between the piston 24 and the cylinder 22 is smaller, the damage of the piston 24 is avoided, and the service life of the brake is ensured.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (6)
1. A brake assembly with dual brake pads, characterized by: the pneumatic brake assembly comprises a brake disc and pneumatic brake assemblies respectively arranged at two sides of the brake disc, wherein the two pneumatic brake assemblies have the same structure;
the pneumatic brake assembly comprises a mounting flange, an air cylinder assembly, a brake cylinder, a transmission seat, a steel back, a friction plate and a reverse expansion torsion spring assembly; the cylinder assembly comprises a cylinder barrel, a cylinder cover and a piston, wherein the cylinder barrel and the brake cylinder are oppositely inserted and fixed in the mounting flange, the cylinder cover is fixedly connected with the cylinder barrel, the piston is movably arranged in the cylinder barrel, a cavity is formed among the cylinder barrel, the cylinder cover and the piston, and the cylinder cover is provided with an air inlet communicated with the cavity; the transmission seat and the steel back are movably arranged in the brake cylinder, the transmission seat is in anti-rotation fit with the brake cylinder, one end, far away from the steel back, of the transmission seat is in axial abutting joint with the piston, and one end, far away from the transmission seat, of the steel back is fixedly connected to the friction plate;
the reverse-expansion torsion spring assembly is sleeved between the transmission seat and the steel back and comprises a reverse-expansion torsion spring A and a reverse-expansion torsion spring B which are wound together, the expansion directions of the reverse-expansion torsion spring A and the reverse-expansion torsion spring B are opposite, a first clamping groove and a second clamping groove are formed in a column section of the transmission seat, a third clamping groove and a fourth clamping groove are formed in a column section of the steel back, a first bending pin is arranged at one end of the reverse-expansion torsion spring A, a third bending pin is arranged at the other end of the reverse-expansion torsion spring A, a second bending pin is arranged at one end of the reverse-expansion torsion spring B, a fourth bending pin is arranged at the other end of the reverse-expansion torsion spring B, the first bending pin is fixed in the first clamping groove, the second bending pin is fixed in the second clamping groove, the third bending pin is fixed in the third clamping groove, and the fourth bending pin is fixed in the fourth clamping groove;
the brake disc is clamped between the friction plates of the two pneumatic brake assemblies.
2. The brake rigging with dual brake pads according to claim 1, wherein: an exhaust channel matched with the piston is arranged in the cylinder barrel.
3. The brake rigging with dual brake pads according to claim 1, wherein: and a gasket is arranged between the cylinder barrel and the brake barrel.
4. The brake rigging with dual brake pads according to claim 1, wherein: a plurality of first steel balls are arranged between the piston and the transmission seat, a plurality of first half ball grooves which are in one-to-one correspondence with the first steel balls are arranged on the corresponding end face of the piston, and the first steel balls are arranged in the first half ball grooves.
5. The brake device with dual brake pads according to claim 1 or 4, wherein: a plurality of second steel balls are arranged between the transmission seat and the steel back, a plurality of second hemispherical grooves which are in one-to-one correspondence with the second steel balls are arranged on the corresponding end surfaces of the steel back, and the second steel balls are arranged in the second hemispherical grooves.
6. The brake rigging with dual brake pads according to claim 1, wherein: the periphery of the transmission seat is provided with a pair of limiting lugs, and the inner wall of the brake cylinder is provided with a limiting chute matched with the limiting lugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710281268.0A CN107420463B (en) | 2017-04-26 | 2017-04-26 | Braking device with double brake pads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710281268.0A CN107420463B (en) | 2017-04-26 | 2017-04-26 | Braking device with double brake pads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107420463A CN107420463A (en) | 2017-12-01 |
| CN107420463B true CN107420463B (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710281268.0A Active CN107420463B (en) | 2017-04-26 | 2017-04-26 | Braking device with double brake pads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107420463B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087452B (en) * | 2017-12-31 | 2024-04-30 | 贵州大学 | High-efficient friction type braking device |
| CN109915511B (en) * | 2019-04-15 | 2020-07-28 | 湖北科技学院 | Automobile disc type brake system |
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| GB934142A (en) * | 1958-09-05 | 1963-08-14 | Leonard Taylor | Improvements in or relating to disc brakes |
| WO2007065312A1 (en) * | 2005-12-09 | 2007-06-14 | Jianhong Liu | A brake device for railway vehicle |
| CN102401050A (en) * | 2010-09-13 | 2012-04-04 | 陈秀凤 | Electromagnetic brake |
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| CN205503819U (en) * | 2016-04-11 | 2016-08-24 | 宁波市福路德汽车科技发展有限公司 | Novel braking of car brake disc friction disc device |
| CN205559640U (en) * | 2016-03-31 | 2016-09-07 | 宁波市福路德汽车科技发展有限公司 | Brake device with shock attenuation dust exhaust |
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| US3995722A (en) * | 1975-02-18 | 1976-12-07 | Abex Corporation | Fail-safe disc brake having a slack adjuster mechanism |
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| CN202349060U (en) * | 2011-11-07 | 2012-07-25 | 奉化市东成摩擦材料有限公司 | Improved brake pad |
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| GB934142A (en) * | 1958-09-05 | 1963-08-14 | Leonard Taylor | Improvements in or relating to disc brakes |
| WO2007065312A1 (en) * | 2005-12-09 | 2007-06-14 | Jianhong Liu | A brake device for railway vehicle |
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| CN107420463A (en) | 2017-12-01 |
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| CB02 | Change of applicant information |
Address after: 315500 No.1-2 binwan Road, Binhai New Area, Fenghua Economic Development Zone, Ningbo City, Zhejiang Province Applicant after: Ningbo fengdongcheng friction material Co.,Ltd. Address before: 315500 No.1-2 binwan Road, Binhai New Area, Fenghua Economic Development Zone, Ningbo City, Zhejiang Province Applicant before: FENGHUA DONGCHENG FRICTION MATERIAL Co.,Ltd. |
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