CN117847114A - Self-adjusting brake system and parking brake mechanism - Google Patents
Self-adjusting brake system and parking brake mechanism Download PDFInfo
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- CN117847114A CN117847114A CN202311867555.1A CN202311867555A CN117847114A CN 117847114 A CN117847114 A CN 117847114A CN 202311867555 A CN202311867555 A CN 202311867555A CN 117847114 A CN117847114 A CN 117847114A
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- 238000007789 sealing Methods 0.000 claims description 28
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 10
- 230000003068 static effect Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 description 13
- 238000001125 extrusion Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The application discloses a self-adjusting brake system and a parking brake mechanism, which relate to the technical field of vehicle brake systems and comprise a box body, a brake wheel, a brake disc, a friction group and a brake cylinder, wherein the brake cylinder comprises a cylinder body fixedly arranged on the brake disc and a brake piston slidingly arranged on the cylinder body, a first oil cavity is arranged in the cylinder body, and a first brake oil path communicated with the first oil cavity is arranged on the cylinder body; the cylinder body is provided with an elastic pin in a sliding mode along the sliding direction of the brake piston, the cylinder body is provided with a limiting piece used for limiting the sliding range of the elastic pin, the cylinder body is also provided with a first elastic piece used for driving the elastic pin to slide towards the direction close to the cylinder body, the elastic pin is abutted to the brake piston, and the friction force between the elastic pin and the brake piston is larger than the elastic force of the first elastic piece. The application has when friction pack in dynamic friction plate and the wearing and tearing of static friction plate, can self-adaptation adjust the response speed of brake, effectively avoid appearing the effect of brake failure condition.
Description
Technical Field
The application relates to the technical field of vehicle brake systems, in particular to a self-adjusting brake system and a parking brake mechanism.
Background
Currently, vehicle braking systems used in urban vehicles typically employ wet braking. The wet type brake assembly mainly comprises a box body, a brake wheel, a brake disc, a friction group, brake fluid, a brake cylinder and a brake system, wherein the brake wheel is rotatably arranged in the box body, the brake disc is fixedly arranged in the box body, and the brake wheel is fixed with wheels of a vehicle; the friction group is arranged between the brake wheel and the brake disc, the friction group is formed by mutually crossing and laminating a plurality of movable friction plates and static friction plates, the friction group is made of friction-resistant materials, the movable friction plates are arranged on the brake wheel, and the static friction plates are fixedly arranged on the brake disc; the brake fluid is generally composed of oil base and additive, and has the characteristics of high temperature resistance and high boiling point; the brake cylinder is arranged on the brake disc and consists of a brake piston and a sealing ring, a brake oil way for brake fluid to enter is arranged on the brake cylinder, and the brake system consists of a brake pedal and a brake pump.
When the vehicle is braked, a driver treads down a brake pedal, the brake pump conveys brake fluid into the brake cylinder through the brake oil way pressure, and the brake piston moves towards the direction of the friction group under the pressure of the brake fluid, so that the movable friction plate and the static friction plate in the friction group are mutually in extrusion contact, friction force is generated, and further the brake wheel is decelerated, and is transmitted to the vehicle through the wheels, so that the braking effect is realized.
However, the abrasion of the dynamic friction plate and the static friction plate in the friction group of the wet brake is unavoidable in the use process, when the abrasion of the dynamic friction plate and the static friction plate in the friction group is too large, the mutual clearance between the dynamic friction plate and the static friction plate is increased, the oil discharge amount required by braking is increased, the response speed of the brake is slow, and even the brake failure occurs.
Disclosure of Invention
To the problem that exists among the prior art, this application provides a self-adjusting braking system and parking braking mechanism, has when friction pack's interior dynamic friction plate and static friction plate wearing and tearing, can self-adaptation adjust the response speed of brake, effectively avoids the effect of the failure condition of appearing brakes.
In a first aspect, the present application provides a self-adjusting brake system, which adopts the following technical scheme:
the self-adjusting brake system comprises a box body, a brake wheel, a brake disc, a friction group and a brake cylinder, wherein the brake wheel is rotatably arranged in the box body, the brake disc is fixedly arranged in the box body, the friction group is arranged between a main shaft and the brake disc, the brake cylinder is arranged on the brake disc and comprises a cylinder body fixedly arranged on the brake disc and a brake piston arranged on the cylinder body in a sliding manner, a first oil cavity is arranged in the cylinder body, a first brake oil way communicated with the first oil cavity is arranged on the cylinder body, and the brake piston is used for extruding the friction group;
the cylinder body is provided with an elastic pin in a sliding mode along the sliding direction of the brake piston, the cylinder body is provided with a limiting piece used for limiting the sliding range of the elastic pin, the cylinder body is also provided with a first elastic piece used for driving the elastic pin to slide towards the direction close to the cylinder body, the elastic pin is abutted to the brake piston, and the friction force between the elastic pin and the brake piston is larger than the elastic force of the first elastic piece.
Optionally, the locating part includes the fixed screw that sets up on the cylinder body, the elastic pin slip cap is established on the screw, first elastic component includes return spring, return spring cover is established on the screw, return spring's one end and the head butt of screw, return spring's the other end and elastic pin butt.
Optionally, be provided with first friction surface on the brake piston, be provided with the second friction surface on the elastic pin, first friction surface and second friction surface butt are provided with a plurality of first tooth strips on the first friction surface, be provided with a plurality of second tooth strips on the second friction surface, the lateral wall that the cylinder body was kept away from to first tooth strip is kept away from the cylinder body along being close to first friction surface direction gradually, the lateral wall that the second tooth strip is close to the cylinder body along being close to second friction surface direction gradually.
Optionally, the brake disc is provided with the brake disc along the slip direction slip of brake piston on the brake disc, just the brake disc sets up between brake piston and the friction group, the brake disc is fixed connection with the dynamic friction piece on the friction group, the brake piston is used for the butt brake disc.
Optionally, the brake piston is disc-shaped, and the end surface of the brake piston close to the brake disc is parallel to the brake disc
Optionally, the first mounting groove has been seted up along the slip direction of brake piston on the cylinder body, brake piston slides and wears to establish in first mounting groove, the first oil filler groove has been seted up along the slip direction of brake piston on the lateral wall of first mounting groove, brake piston's lateral wall is provided with first round platform, first round platform slides and sets up in first oil filler groove, first oil pocket sets up between the lateral wall of first round platform and first oil filler groove.
Optionally, the cover is equipped with first sealing washer on the brake piston, first sealing washer and the lateral wall butt of first mounting groove, the cover is equipped with the second sealing washer on the first round platform, the lateral wall butt of second sealing washer and first oil filler groove.
In a second aspect, the present application provides a parking brake mechanism, which adopts the following technical scheme:
the utility model provides a parking braking mechanism is applied to a self-adjusting braking system, including sliding the parking piston that sets up on the brake disc and be used for driving the second elastic component that the parking piston slided to being close to friction group direction, just the parking piston is used for extrudeing friction group, be provided with on the brake disc and be used for driving the drive division that the parking piston slided to keeping away from friction group direction.
Optionally, the second elastic component includes the pressure spring, the holding groove has been seted up to the parking piston one end that is close to the cylinder body, the pressure spring sets up in the holding groove, the one end and the cylinder body butt of pressure spring, the other end and the parking piston butt of pressure spring.
Optionally, the drive portion is including seting up the second brake oil circuit on the brake disc, the second mounting groove has been seted up along the slip direction of parking piston on the brake disc, the parking piston slides and sets up in the second mounting groove, the second oil filler groove has been seted up along the slip direction of parking piston on the lateral wall of second mounting groove, the lateral wall of parking piston is provided with the second round platform, the second round platform slides and sets up in the second oil filler groove, form the second oil pocket between the lateral wall of second round platform and second oil filler groove, second brake oil circuit and second oil pocket intercommunication.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the brake wheel is fixed with wheels of a vehicle, when the vehicle brakes, brake fluid is conveyed into a first oil cavity in the cylinder body through pressure of a first brake oil circuit, and a brake piston moves towards the direction of a friction group under the pressure of the brake fluid, so that a movable friction plate and a static friction plate in the friction group are mutually in extrusion contact, friction force is generated, the brake wheel is further decelerated, and the brake fluid is transmitted to the vehicle through the wheels, and therefore the braking effect is achieved. When the friction force between the brake piston and the elastic pin is pushed by the brake hydraulic force, the friction force between the elastic pin and the brake piston is driven by the elastic pin to slide away from the friction group until the elastic pin returns to the initial position, and brake hydraulic pressure in the first oil cavity is pressed out, at the moment, because the friction force between the elastic pin and the brake piston is larger than the elastic force of the elastic pin, the brake piston cannot return to the initial position, namely the initial braking agent in the first oil cavity is increased, and the stroke required by the brake piston for braking is equal to the stroke required by the brake in the initial design, and the required oil discharge amount for braking is kept unchanged during braking, so that the self-adaptive braking failure rate is effectively avoided.
2. When the vehicle is parked, the parking piston slides towards the direction close to the friction group under the action of the elastic force of the second elastic piece, and extrudes the friction group, so that the parking of the vehicle is realized; brake liquid is injected into the second oil cavity through a second brake oil way, the parking piston is driven to slide in a direction away from the friction group, and the second elastic piece is extruded, so that the parking of the vehicle can be relieved; and the braking piston and the parking piston share one friction group, so that the integrated effect is good, the size is small, the cost is low, the braking piston and the parking piston can be used simultaneously or independently, and when an emergency occurs, the braking effect of a vehicle in the emergency can be improved by jointly extruding the friction group through the braking piston and the parking piston.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of an embodiment of the present application;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged view of a portion B in fig. 1.
Reference numerals illustrate: 1. a case; 11. a brake wheel; 2. a brake disc; 21. a second mounting groove; 22. a second brake oil path; 23. a second oil injection groove; 24. a second oil chamber; 3. a friction group; 31. a dynamic friction plate; 32. a static friction plate; 33. a brake disc; 4. a brake cylinder; 41. a cylinder; 411. a first mounting groove; 412. a first oil injection groove; 413. a first brake oil path; 42. a brake piston; 421. a first round table; 422. a first seal ring; 423. a second seal ring; 43. a first oil chamber; 44. an elastic pin; 45. a screw; 46. a return spring; 5. a parking piston; 51. a receiving groove; 52. a second round table; 53. a third seal ring; 54. a fourth seal ring; 6. a compression spring.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a self-adjusting brake system. Referring to fig. 1 and 2, the brake device comprises a box body 1, a brake wheel 11 rotatably arranged in the box body 1, a brake disc 2 fixedly arranged in the box body 1, a friction group 3 arranged between a main shaft and the brake disc 2, and a brake cylinder 4 arranged on the brake disc 2, wherein a first center hole is formed in the brake disc 2, the brake wheel 11 is rotatably arranged in the first center hole of the brake disc 2 in a penetrating manner, and the brake wheel 11 is used for being fixed with wheels of a vehicle.
Referring to fig. 1, the friction group 3 is formed by mutually crossing and laminating a plurality of dynamic friction plates 31 and static friction plates 32, and is made of friction-resistant materials, the dynamic friction plates 31 are installed on the brake wheel 11, the static friction plates 32 are fixedly installed on the brake disc 2, a brake disc 33 is fixedly arranged on the dynamic friction plate 31 at the outermost side of the friction group 3, and the brake disc 33 is fixedly connected with the brake wheel 11 coaxially.
Referring to fig. 1 and 2, the brake cylinder 4 includes a cylinder 41 fixedly disposed on the brake disc 2, and a brake piston 42 slidably disposed on the cylinder 41, wherein a second center hole is formed in an upper portion of the cylinder 41 along an axial direction of the brake wheel 11, the brake wheel 11 is rotatably disposed in the second center hole of the cylinder 41, a first mounting slot 411 is formed in the cylinder 41 along the axial direction of the brake wheel 11, the brake piston 42 is disc-shaped, and slidably disposed in the first mounting slot 411 along the axial direction of the brake wheel 11, the brake piston 42 is coaxial with the brake wheel 11, and an end surface of the brake piston 42, which is close to the brake disc 33, is parallel to the brake disc 33.
Referring to fig. 1 and 2, a first oil injection groove 412 is formed in the outer side wall of the first mounting groove 411 along the sliding direction of the brake piston 42, a first round table 421 is arranged on the outer side wall of the brake piston 42, the first round table 421 and the brake piston 42 are integrally formed, the first round table 421 is slidably arranged in the first oil injection groove 412, a first oil cavity 43 is formed between the first round table 421 and the side wall of the first oil injection groove 412, a first brake oil path 413 communicated with the first oil cavity 43 is arranged on the cylinder 41, and the first brake oil path 413 is communicated with a brake pump; when the vehicle brakes, a brake pump is started, brake fluid is conveyed into the first oil cavity 43 through the first brake oil way 413 in a pressure mode, the brake piston 42 moves towards the direction of the friction group 3 under the pressure of the brake fluid and is abutted against the brake pad, so that the movable friction pad 31 and the static friction pad 32 in the friction group 3 are in mutual extrusion contact, friction force is generated, the brake wheel 11 is further decelerated, the brake is transmitted to the vehicle through wheels, the braking effect is achieved, the first oil cavity 43 is formed between the first round table 421 and the side wall of the first oil injection groove 412, oil discharge amount required when the brake piston 42 is driven is reduced, and the response speed of the brake is improved.
Referring to fig. 2, a first sealing ring 422 is sleeved on the brake piston 42, a first annular groove is formed in the outer side wall of the brake piston 42 along the circumferential direction of the brake piston 42, the first sealing ring 422 is arranged in the first annular groove, and the first sealing ring 422 is abutted against the side wall of the first mounting groove 411; the second sealing ring 423 is sleeved on the first round table 421, the second annular groove is formed in the side wall of the first round table 421 along the circumferential direction of the first round table 421, the second sealing ring 423 is arranged in the second annular groove, the second sealing ring 423 is abutted against the side wall of the first oil injection groove 412, the first oil cavity 43 is arranged between the first sealing ring 422 and the second sealing ring 423, and the sealing performance of the first oil cavity 43 is improved through the first sealing ring 422 and the second sealing ring 423.
Referring to fig. 2, an elastic pin 44 is slidably disposed in the first mounting slot 411 along a sliding direction of the brake piston 42, a limiting member for limiting a sliding range of the elastic pin 44 is disposed on the cylinder 41, the limiting member includes a screw 45, a threaded hole adapted to the screw 45 is formed in a bottom wall of the mounting slot along the sliding direction of the elastic pin 44, the screw 45 is disposed in the threaded hole in a penetrating manner and is in threaded connection with the cylinder 41, and the elastic pin 44 is slidably sleeved on the screw 45.
Referring to fig. 2, the cylinder 41 is further provided with a first elastic member for driving the elastic pin 44 to slide in a direction approaching the cylinder 41, the first elastic member includes a return spring 46, the return spring 46 is sleeved on the screw 45, one end of the return spring 46 abuts against the head of the screw 45, and the other end of the return spring 46 abuts against the elastic pin 44.
Referring to fig. 2, a first friction surface is disposed on the brake piston 42, a second friction surface is disposed on the elastic pin 44, the first friction surface is abutted against the second friction surface, a plurality of first tooth strips are disposed on the first friction surface, the first tooth strips and the brake piston 42 are integrally formed, each first tooth strip is distributed along a sliding direction of the brake piston 42, a side wall of the first tooth strip away from the cylinder 41 is gradually away from the cylinder 41 along a direction close to the first friction surface, a plurality of second tooth strips are disposed on the second friction surface, the second tooth strips and the elastic pin 44 are integrally formed, each second tooth strip is distributed along a sliding direction of the elastic pin 44, a side wall of the second tooth strip close to the cylinder 41 is gradually close to the cylinder 41 along a direction close to the second friction surface, and friction force between the first friction surface and the second friction surface is improved through the first tooth strips and the second tooth strips, so that friction force between the elastic pin 44 and the brake piston 42 is greater than the elastic force of the return spring 46.
The implementation principle of the self-adjusting brake system in the embodiment of the application is as follows: when the vehicle brakes, brake fluid is conveyed into the first oil cavity 43 in the cylinder 41 through the first brake oil passage 413 under pressure, the brake piston 42 moves towards the friction group 3 under the pressure of the brake fluid and is abutted against the brake pads, so that the dynamic friction plate 31 and the static friction plate 32 in the friction group 3 are in mutual extrusion contact, friction force is generated, the brake wheel 11 is further decelerated, and the brake fluid is transmitted to the vehicle through the wheels, and therefore a braking effect is achieved.
When the dynamic friction plate 31 and the static friction plate 32 in the friction group 3 are worn, the initial gap between the dynamic friction plate 31 and the static friction plate 32 is increased, at the moment, the stroke of the brake piston 42 is increased when the brake is braked, and the sliding range of the elastic pin 44 is limited by the screw 45 due to friction fit between the brake piston 42 and the elastic pin 44, when the brake piston 42 slides to the maximum sliding distance of the elastic pin 44, the elastic pin 44 does not move any more, and the brake piston 42 can continuously move forwards against the friction force between the brake piston 42 and the elastic pin 44 under the pushing of brake hydraulic pressure, so that the friction group 3 is extruded;
when the brake is released, the elastic pin 44 drives the brake piston 42 to slide away from the friction group 3 under the action of the resilience force of the return spring 46 until the elastic pin 44 returns to the initial position and the brake in the first oil cavity 43 is hydraulically pressed out, at this time, since the friction force between the elastic pin 44 and the brake piston 42 is greater than the resilience force of the return spring 46, the brake piston 42 cannot return to the initial position, that is, the initial brake agent in the first oil cavity 43 is increased, and at this time, the stroke required by the brake of the brake piston 42 is equal to the stroke required by the brake in the initial design, and the oil discharge amount required by the brake is kept unchanged, so that the response speed of the brake is adaptively adjusted, and the brake failure is effectively avoided.
The embodiment of the application also discloses a parking brake mechanism which is applied to the self-adjusting brake system.
Referring to fig. 1 and 3, a parking brake mechanism includes a parking piston 5 and a second elastic member, the parking piston 5 is also disc-shaped, a second mounting groove 21 is formed in the brake disc 2 along the axial direction of a brake wheel 11, the parking piston 5 is slidably arranged in the second mounting groove 21 along the axial direction of the brake wheel 11, the parking piston 5 is coaxial with a brake disc 33, the end surface of the parking piston 5, which is close to the brake disc 33, is parallel to the brake disc 33, the second elastic member includes a pressure spring 6, a containing groove 51 is formed in one end of the parking piston 5, which is close to a cylinder 41, the pressure spring 6 is arranged in the containing groove 51, one end of the pressure spring 6 is in butt joint with the cylinder 41, and the other end of the pressure spring 6 is in butt joint with the parking piston 5; when the vehicle is parked, the parking piston 5 slides towards the direction close to the friction group 3 under the action of the elastic force of the pressure spring 6 and is abutted with the brake disc 33, so that the friction group 3 is extruded, and the parking of the vehicle is realized.
Referring to fig. 3, a driving part for driving the parking piston 5 to slide far away from the friction group 3 is provided on the brake disc 2, the driving part includes a second brake oil path 22 provided on the brake disc 2, a second oil injection groove 23 is provided on an outer side wall of the second mounting groove 21 along a sliding direction of the parking piston 5, a second round table 52 is provided on an outer side wall of the parking piston 5, the second round table 52 and the parking piston 5 are integrally formed, the second round table 52 is slidably provided in the second oil injection groove 23, a second oil cavity 24 is formed between the second round table 52 and a side wall of the second oil injection groove 23, the second brake oil path 22 is communicated with the second oil cavity 24, and the second brake oil path 22 is used for communicating with a brake pump.
When the vehicle is started, the brake pump is driven, brake liquid is injected into the second oil cavity 24 through the second brake oil way 22, the parking piston 5 is driven to slide in the direction away from the friction group 3, and the pressure spring 6 is extruded, so that the parking of the vehicle can be relieved; and, braking piston 42 and parking piston 5 have shared a friction group 3, and integrated effectual, small, with low costs, and braking piston 42 and parking piston 5 can use simultaneously, also can use alone, when the emergency appears, through braking piston 42 and parking piston 5 co-extrusion friction group 3, can improve the braking effect under the vehicle emergency.
Referring to fig. 3, a third sealing ring 53 is sleeved on the parking piston 5, a third annular groove is formed in the outer side wall of the parking piston 5 along the circumferential direction of the parking piston 5, the third sealing ring 53 is arranged in the third annular groove, and the third sealing ring 53 is in abutting contact with the side wall of the second mounting groove 21; the second round table 52 is sleeved with a fourth sealing ring 54, the side wall of the second round table 52 is provided with a fourth annular groove along the circumferential direction of the second round table 52, the fourth sealing ring 54 is arranged in the fourth annular groove, the fourth sealing ring 54 is abutted with the side wall of the second oil injection groove 23, and the second oil cavity 24 is arranged between the third sealing ring 53 and the fourth sealing ring 54; the sealability of the second oil chamber 24 is improved by the third seal ring 53 and the fourth seal ring 54.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides a self-modulation formula brake braking system, includes box (1), rotates brake wheel (11) that set up in box (1), fixed brake disc (2) that set up in box (1), installs friction group (3) between main shaft and brake disc (2), and brake cylinder (4) of setting on brake disc (2), its characterized in that: the brake cylinder (4) comprises a cylinder body (41) fixedly arranged on the brake disc (2) and a brake piston (42) slidingly arranged on the cylinder body (41), a first oil cavity (43) is arranged in the cylinder body (41), a first brake oil circuit (413) communicated with the first oil cavity (43) is arranged on the cylinder body (41), and the brake piston (42) is used for extruding the friction group (3);
elastic pins (44) are arranged on the cylinder body (41) in a sliding mode along the sliding direction of the brake piston (42), limiting pieces used for limiting the sliding range of the elastic pins (44) are arranged on the cylinder body (41), first elastic pieces used for driving the elastic pins (44) to slide towards the direction close to the cylinder body (41) are further arranged on the cylinder body (41), the elastic pins (44) are abutted to the brake piston (42), and friction force between the elastic pins (44) and the brake piston (42) is larger than the elastic force of the first elastic pieces.
2. A self-adjusting brake system as defined in claim 1, wherein: the limiting piece comprises a screw (45) fixedly arranged on the cylinder body (41), the elastic pin (44) is slidably sleeved on the screw (45), the first elastic piece comprises a return spring (46), the return spring (46) is sleeved on the screw (45), one end of the return spring (46) is abutted with the head of the screw (45), and the other end of the return spring (46) is abutted with the elastic pin (44).
3. A self-adjusting brake system as defined in claim 1, wherein: be provided with first friction surface on brake piston (42), be provided with the second friction surface on elastic pin (44), first friction surface and second friction surface butt are provided with a plurality of first tooth strips on the first friction surface, be provided with a plurality of second tooth strips on the second friction surface, the lateral wall that cylinder body (41) was kept away from to first tooth strip is kept away from along being close to first friction surface direction and is kept away from cylinder body (41) gradually, the lateral wall that cylinder body (41) was kept away from to second tooth strip is close to the lateral wall of cylinder body (41) is close to cylinder body (41) along being close to second friction surface direction gradually.
4. A self-adjusting brake system as defined in claim 1, wherein: the brake disc (33) is arranged on the brake disc (2) in a sliding mode along the sliding direction of the brake piston (42), the brake disc (33) is arranged between the brake piston (42) and the friction group (3), the brake disc (33) is fixedly connected with the movable friction plate (31) on the friction group (3), and the brake piston (42) is used for abutting against the brake disc (33).
5. A self-adjusting brake system as defined in claim 4, wherein: the brake piston (42) is disc-shaped, and the end surface of the brake piston (42) close to the brake disc (33) is parallel to the brake disc (33).
6. A self-adjusting brake system as defined in claim 5, wherein: first mounting groove (411) have been seted up along the slip direction of brake piston (42) on cylinder body (41), brake piston (42) slip wears to establish in first mounting groove (411), first oil filler groove (412) have been seted up along the slip direction of brake piston (42) on the lateral wall of first mounting groove (411), the lateral wall of brake piston (42) is provided with first round platform (421), first round platform (421) slip sets up in first oil filler groove (412), first oil pocket (43) set up between the lateral wall of first round platform (421) and first oil filler groove (412).
7. A self-adjusting brake system as defined in claim 6, wherein: the brake piston (42) is sleeved with a first sealing ring (422), the first sealing ring (422) is abutted to the side wall of the first mounting groove (411), the first round table (421) is sleeved with a second sealing ring (423), and the second sealing ring (423) is abutted to the side wall of the first oil injection groove (412).
8. A parking brake mechanism for use in a self-adjusting brake system as claimed in any one of claims 1 to 7, wherein: the brake device comprises a parking piston (5) arranged on a brake disc (2) in a sliding manner and a second elastic piece used for driving the parking piston (5) to slide towards a direction close to a friction group (3), wherein the parking piston (5) is used for extruding the friction group (3), and a driving part used for driving the parking piston (5) to slide towards a direction far away from the friction group (3) is arranged on the brake disc (2).
9. A parking brake mechanism as claimed in claim 8, wherein: the second elastic piece comprises a pressure spring (6), a containing groove (51) is formed in one end, close to the cylinder body (41), of the parking piston (5), the pressure spring (6) is arranged in the containing groove (51), one end of the pressure spring (6) is abutted to the cylinder body (41), and the other end of the pressure spring (6) is abutted to the parking piston (5).
10. A parking brake mechanism as claimed in claim 8, wherein: the driving part comprises a second brake oil way (22) arranged on the brake disc (2), a second mounting groove (21) is formed in the brake disc (2) along the sliding direction of the parking piston (5), the parking piston (5) is arranged in the second mounting groove (21) in a sliding mode, a second oil injection groove (23) is formed in the outer side wall of the second mounting groove (21) along the sliding direction of the parking piston (5), a second round table (52) is arranged on the outer side wall of the parking piston (5), the second round table (52) is arranged in the second oil injection groove (23) in a sliding mode, a second oil cavity (24) is formed between the second round table (52) and the side wall of the second oil injection groove (23), and the second brake oil way (22) is communicated with the second oil cavity (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311867555.1A CN117847114A (en) | 2023-12-29 | 2023-12-29 | Self-adjusting brake system and parking brake mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311867555.1A CN117847114A (en) | 2023-12-29 | 2023-12-29 | Self-adjusting brake system and parking brake mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117847114A true CN117847114A (en) | 2024-04-09 |
Family
ID=90543308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311867555.1A Pending CN117847114A (en) | 2023-12-29 | 2023-12-29 | Self-adjusting brake system and parking brake mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117847114A (en) |
-
2023
- 2023-12-29 CN CN202311867555.1A patent/CN117847114A/en active Pending
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