CN115773318B - Vehicle braking device - Google Patents
Vehicle braking device Download PDFInfo
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- CN115773318B CN115773318B CN202211550714.0A CN202211550714A CN115773318B CN 115773318 B CN115773318 B CN 115773318B CN 202211550714 A CN202211550714 A CN 202211550714A CN 115773318 B CN115773318 B CN 115773318B
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Abstract
The invention belongs to the technical field of vehicle braking, and discloses a vehicle braking device which comprises a fixed flange plate, a hydraulic action module, a thermal warehouse and a transition plate, wherein the hydraulic action module comprises a brake piston shell, one side of the brake piston shell is connected with the fixed flange plate, and one end, far away from the fixed flange plate, of the piston shell is connected with a plurality of hydraulic devices; the brake action module force application hydraulic elements are evenly distributed, the acting force can be even, the quantity of the hydraulic elements can be increased or decreased according to different weight-level vehicle types or different thrust products can be selected, the thermal warehouse and the hydraulic action module are connected with the fixed flange, the disassembly, the replacement and the maintenance are convenient, the torque tube plays a role in guiding, the degree of fit of the movable and static plates is high, the attaching area is large, and the functions of bearing and transmitting torque are also played.
Description
Technical Field
The invention belongs to the technical field of vehicle braking, and particularly relates to a vehicle braking device.
Background
The caliper disc brake is not suitable for braking of heavy vehicles because the friction area between the brake pad and the brake disc is small, so that the braking force is small. The contact area between the brake shoe and the brake drum of the drum brake is large, a large amount of heat is generated in the braking process, but the heat dissipation performance is poor due to the structural limitation, and the brake shoe is easy to break down in a long-time high-temperature environment, so that the braking effect is affected. And the drum brake is easy to generate brake powder in the braking process and needs to be cleaned regularly. And the drainage performance is poor, and accumulated water can greatly influence the braking effect.
Due to the large weight of armored vehicles, the caliper disc brake has insufficient braking force. Moreover, because unmanned armored vehicles need to adapt to various pavements, crawler-type travelling is adopted, a braking device needs to be installed inside a vehicle body, and a drum brake is poor in braking heat dissipation, so that pipelines, circuits or other instruments in the vehicle body can be influenced, and the temperature of the drum brake is more difficult to dissipate due to the relative closed environment, so that the braking effect is influenced.
In summary, two types of brake devices commonly used in passenger cars are not suitable for large-tonnage unmanned armored vehicles, and after the normal brake device is used for a long time, the brake failure condition can occur, so that the running safety of the vehicle is affected.
Disclosure of Invention
The invention aims to solve the problems, and provides the vehicle braking device which has the advantages of strong braking force, long service life, convenience in disassembly and assembly, strong heat dissipation, rapid response and stable braking effect.
In order to achieve the above purpose, the present invention provides the following technical solutions: a vehicle braking device comprises a fixed flange plate, a hydraulic action module, a thermal reservoir and a transition plate;
the hydraulic action module comprises a brake piston shell, one side of the brake piston shell is connected with the fixed flange, and one end of the brake piston shell, which is far away from the fixed flange, is respectively connected with a plurality of hydraulic elements capable of providing push-pull force, so that driving and parking braking are realized;
the heat warehouse comprises a steel back, the steel back is positioned on one side, far away from the fixed flange, of the brake piston shell, one end, far away from the brake piston shell, of the steel back is connected with a first static disc, one end of the first static disc is connected with a movable disc, one end of the movable disc is connected with a second static disc, and one end, far away from the movable disc, of the second static disc is connected with a torque tube;
the connecting wheel is fixedly arranged on the bearing hole of the movable disc, a torsion spring cavity is formed in the connecting wheel, a torsion spring is connected in the torsion spring cavity, a buffer wheel is rotationally arranged on the central hole of the connecting wheel, and two ends of the torsion spring are respectively connected to the connecting wheel and the buffer wheel.
Preferably, the hydraulic action module further comprises a plurality of pressure heads and a plurality of spring trays, wherein the spring trays are connected to one end of the pull type clamp, and the pressure heads are connected with the push type clamp.
Preferably, the first static disc, the second static disc and the movable disc are made of carbon ceramic or other wear-resistant materials.
Preferably, the push type clamp hydraulic element, the pull type clamp hydraulic element and the parking spring are respectively distributed in a crossed mode.
Preferably, the bottom plate of the fixed flange is connected with a gear box of the vehicle.
Preferably, the center of the transition disc is an involute spline shaft which is connected with a power output shaft of the vehicle, and when the output shaft rotates, the transition disc can rotate along with the power output shaft.
Preferably, the fixing flange plate is connected with a mounting flange for connecting the hydraulic action module and a thermal warehouse mounting frame.
Preferably, the transition disc is connected with a brake disc main body, and an elastic resetting device is arranged on the brake disc main body and used for adjusting a gap between the friction surface and the braking surface of the dynamic disc and the static disc.
Compared with the prior art, the invention has the following beneficial effects:
1. the braking device increases the friction area by adopting the dynamic and static disc group mode so as to increase the braking moment and meet the braking requirement of a heavy vehicle. The movable disc and the static disc are made of carbon ceramic or other wear-resistant materials, so that the service life of the brake device is greatly prolonged. And the elastic resetting device is arranged, so that the friction surface and the braking surface can be effectively separated, the friction surface and the braking surface are not contacted during normal running, unnecessary abrasion is reduced, and the service life is further prolonged. The parking spring is arranged in the device, and the parking brake is realized on the premise of not passing through other external structures. Compact structure, and convenient overall disassembly, assembly and maintenance or part replacement. In summary, compared with the existing vehicle braking device, the vehicle braking device has the advantages of strong braking force, long service life, convenience in disassembly and assembly, strong heat dissipation, rapid response, stable braking effect and the like.
2. The brake action module force application hydraulic elements are evenly distributed, the acting force can be even, the quantity of the hydraulic elements can be increased or decreased according to different weight-level vehicle types or different thrust products can be selected, the thermal warehouse and the hydraulic action module are connected with the fixed flange, the disassembly, the replacement and the maintenance are convenient, the torque tube plays a role in guiding, the degree of fit of the movable and static plates is high, the attaching area is large, and the functions of bearing and transmitting torque are also played.
FIG. 1 is a schematic view of the overall structure of a brake device of the present invention;
FIG. 2 is a schematic view of the structure of the fixing flange of the present invention;
FIG. 3 is a schematic view of the structure of the transition disc of the present invention;
fig. 4 is a schematic structural view of the movable disk of the present invention.
Description of the drawings: 1. a transition disc; 2. a torque tube; 3. a second stationary plate; 4. a movable plate; 5. a first stationary plate; 6. a steel back; 7. a brake piston housing; 8. a fixed flange; 9. a pull-type gripper hydraulic element; 10. a spring tray; 11. a push-type clamp hydraulic element; 12. a pressure head; 13. a parking spring; 14. a mounting flange; 15. a thermal warehouse mounting rack; 16. a spring guide shaft; 17. a limiting block; 18. a brake disc body; 19. a movable disc return spring; 20. a fifth wheel; 21. a torsion spring; 22. a torsion spring cavity; 23. and a buffer wheel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1-4, a vehicle braking device, in particular to a braking device of a medium/heavy unmanned armored vehicle, wherein the braking device specifically comprises a fixed flange 8, a hydraulic action module, a thermal warehouse and a transition disc 1.
The hydraulic action module comprises a brake piston shell 7, one side of the brake piston shell 7 is connected with a fixed flange 8, one end of the brake piston shell 7 far away from the fixed flange 8 is respectively connected with a plurality of push-type clamp hydraulic elements 11, a plurality of pull-type clamp hydraulic elements 9 and a plurality of parking springs 13, and the parking springs 13 can realize parking braking on the premise of not passing through other external structures.
The thermal store includes steel backing 6, and steel backing 6 is located one side that fixed flange 8 was kept away from to brake piston housing 7, and the one end that brake piston housing 7 was kept away from to steel backing 6 is connected with first quiet dish 5, and the one end of first quiet dish 5 is connected with movable dish 4, and the one end of movable dish 4 is connected with second quiet dish 3, and the one end that movable dish 4 was kept away from to second quiet dish 3 is connected and is equipped with torque tube 2.
The hydraulic action module consists of a brake piston shell 7, a plurality of hydraulic elements, accessories thereof, a plurality of parking springs and the like; the thermal warehouse consists of a torque tube 2, a carbon ceramic or other wear-resistant material static disc, a carbon ceramic or other wear-resistant material dynamic disc 4 and a steel back 6, wherein the torque tube 2 is a device for mainly bearing braking torque.
The connecting wheel 20 is fixedly arranged on a bearing hole of the movable disc 4, the torsion spring cavity 22 is formed in the connecting wheel 20, the torsion spring 21 is connected in the torsion spring cavity 22, the buffer wheel 23 is rotationally arranged on a central hole of the connecting wheel 20, two ends of the torsion spring 21 are respectively connected to the connecting wheel 20 and the buffer wheel 23, an inner hole of the buffer wheel 23 is rotationally connected to a bearing of the brake disc main body 18, and friction force between the buffer wheel 23 and the bearing is larger than friction force between the connecting wheel 20 and the buffer wheel 23, namely, when the same rotational force is applied, the rotational speed of the connecting wheel 20 is larger than that of the buffer wheel 23.
When the vehicle speed is too high or the first static disc 5 and the second static disc 3 are damaged, obvious braking is not formed on the vehicle, so that the braking efficiency is low, the safety of the vehicle body is affected, and when the outer ring of the brake disc main body 18 is embedded with the groove of the movable disc 4, the transition disc 1 and the brake disc main body 18 drive the movable disc 4 and the fifth wheel 20 to rotate, so that the torsion spring 21 is driven to twist, the torsion force of the torsion spring 21 is increased, the reaction force of the torsion spring 21 is utilized to limit the rotation of the movable disc 4, the torsion spring 21 is matched with the first static disc 5 and the second static disc 3, the braking distance of the vehicle is reduced, and meanwhile, all braking performance cannot be lost when the first static disc 5 and the second static disc 3 are out of order.
Meanwhile, when the torsion spring 21 works, in order to avoid the torsion spring 21 from breaking when rotating along with the fifth wheel 20, and further when the torsion force of the torsion spring 21 is close to a limit value, the torsion spring 21 drives the buffer wheel 23 to rotate, so that braking of the movable disc 4 is realized by means of friction force between the buffer wheel 23 and a bearing, protection of the torsion spring 21 is realized, and meanwhile, integral braking of a vehicle is also realized, so that the situation that braking failure of the vehicle cannot occur is ensured.
After the braking of the vehicle is completed, the outer ring of the brake disc main body 18 is separated from the movable disc 4, and at the moment, the first static disc 5 is also separated from the second static disc 3 from the movable disc 4, so that the fifth wheel 20 rotates under the action of the torsion spring 21 to drive the fifth wheel 20 and the movable disc 4 to rotate, thereby removing the torsion force of the torsion spring 21 and facilitating the next use.
The damper wheel 23 does not rotate when the torsion spring 21 is subjected to the force release.
Further, the hydraulic action module further comprises a plurality of pressure heads 12 and a plurality of spring trays 10, wherein the spring trays 10 are connected to one end of the pull-type clamp hydraulic element 9, and the pressure heads 12 are connected with the push-type clamp hydraulic element 11.
Further, the materials of the first static disc 5, the second static disc 3 and the movable disc 4 are made of carbon Tao Caizhi, and compared with the common friction material, the carbon ceramic material has the advantages of high strength, high modulus, high hardness, impact resistance, oxidation resistance, high temperature resistance, acid and alkali resistance, corrosion of all chemical substances, small thermal expansion coefficient, light specific gravity and the like of the high-performance ceramic, and meanwhile, the defects of high brittleness, single function and the like of the common ceramic material are completely overcome, and the service life is greatly prolonged.
Further, the push-type clamping device hydraulic element 11, the pull-type clamping device hydraulic element 9 and the parking spring 13 are respectively distributed in a crossed mode, so that the balance of stress on the steel back 6 when the push-type clamping device hydraulic element is in contact with the steel back 6 is ensured, the first static disc 5 and the movable disc 4 can be completely contacted, and the stress is balanced.
Further, the bottom plate of the fixed flange 8 is connected with the gear box of the vehicle, so that the function of installing and fixing the brake action module and the thermal reservoir is achieved, and the bottom plate is an important part for the final action of the brake torque in the whole set of brake device.
Further, the center of the transition disc 1 is an involute spline shaft, the involute spline shaft is connected with a power output shaft of a vehicle, when the power output shaft rotates, the transition disc 1 can rotate along with the power output shaft, and meanwhile, an elastic reset device is connected to the transition disc 1 and used for adjusting a gap between the dynamic disc and the static disc.
The convex part of the outer ring of the transition disc main body 18 can be clamped into the groove of the movable disc 4 to drive the movable disc 4 to rotate. During braking, the friction force generated by extrusion of the static discs on two sides of the movable disc 4 rotates slowly, and the rotating speed of the power output shaft is slowed down through transmission of the transition disc 1, so that the purpose of braking is achieved. The axial action distance of the brake disc 4 is limited, so that the brake disc 4 is completely separated from two static discs during normal running, unnecessary abrasion is reduced, and an elastic reset mechanism is arranged on the main body of the transition disc 1. During normal running, spring elastic force acts on the movable disc 4 to separate the movable disc from the fixed disc connected to the torque tube 2, and the limiting block 17 can limit the return stroke of the brake disc 4 to avoid contact between the movable disc 4 and the fixed disc on the steel back 6.
Further, the fixing flange 8 is connected with a mounting flange 14 and a thermal warehouse mounting frame 15 for connecting the hydraulic action module, wherein the hydraulic action module is connected with the mounting flange 14 through bolts and is a main component for applying pressure to the dynamic and static disc groups, and one end of the steel back 6 is connected with the thermal warehouse mounting frame 15.
During braking, the friction force generated by extrusion of the static discs on two sides of the movable disc 4 rotates slowly, and the rotating speed of the power output shaft is slowed down through transmission of the transition disc 1, so that the purpose of braking is achieved. The axial action distance of the brake disc 4 is limited, so that the brake disc 4 and the two static discs are in a completely separated state during normal running, and unnecessary abrasion of the brake disc 4 is reduced.
During normal driving, spring elastic force acts on the movable disc 4 to separate the movable disc from the fixed disc adhered to the torque tube 2, the fixed disc adhered to the steel back 6 is pulled back by the push type hydraulic element 11, and the limiting block 17 can limit the return stroke of the brake disc to avoid contact between the movable disc 4 and the first fixed disc 5 on the steel back 6. During service braking, the push type hydraulic element 11 generates thrust to press the movable disc 4, the first static disc 5 and the second static disc 3 together, so that friction force is generated between the movable disc and the static disc, the movable disc 4 and the transition disc 1 gradually stop rotating, and then the power output shaft slowly stops, so that a braking effect is achieved. When the large-angle ramp is parked in a short time, the push-type hydraulic element 11 is pushed out, the parking spring 13 is matched with the push-type hydraulic element 11 to act on the steel back 6 at the same time, and the dynamic and static disc groups are pressed, so that the short-time large-gradient parking effect is achieved. When the automobile is parked and braked for a long time, the push type hydraulic element 11 and the pull type hydraulic element 9 return to the initial state, the elastic force of the parking spring 13 is used for attaching the dynamic disc and the static disc, and the generated friction force can enable the unmanned armored automobile to park for a long time.
The hydraulic action module can adjust the pressure control pressing force of the hydraulic system according to the actual braking requirement, and achieves the effects of slow braking, emergency braking, spot braking, parking braking and the like, so that the braking device can meet the braking force requirement of 10-ton unmanned armored vehicles, and has the advantages of long service life, quick response, stable braking effect, convenience in maintenance, good heat dissipation effect and the like.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a vehicle braking device, includes fixed flange dish, hydraulic pressure action module, heat storehouse and transition dish, its characterized in that:
the hydraulic action module comprises a brake piston shell, one side of the brake piston shell is connected with the fixed flange, and one end, far away from the fixed flange, of the brake piston shell is respectively connected with a plurality of hydraulic elements and a plurality of parking springs;
the heat warehouse comprises a steel back, the steel back is positioned on one side, far away from the fixed flange, of the brake piston shell, one end, far away from the brake piston shell, of the steel back is connected with a first static disc, one end of the first static disc is connected with a movable disc, one end of the movable disc is connected with a second static disc, and one end, far away from the movable disc, of the second static disc is connected with a torque tube;
a connecting wheel is fixedly arranged on the bearing hole of the movable disc, a torsion spring cavity is formed in the connecting wheel, a torsion spring is connected in the torsion spring cavity, a buffer wheel is rotationally arranged on the central hole of the connecting wheel, and two ends of the torsion spring are respectively connected to the connecting wheel and the buffer wheel;
the hydraulic action module further comprises a plurality of pressure heads and a plurality of spring trays, the spring trays are connected to one end of the pull-type hydraulic element, and the pressure heads are connected with the push-type hydraulic element;
the central shaft of the transition disc is connected with the power output shaft of the vehicle, and when the power output shaft of the vehicle rotates, the transition disc can rotate along with the power output shaft of the vehicle; an elastic resetting device is connected to the transition disc and used for adjusting the gap between the friction surface and the braking surface of the dynamic disc and the static disc;
when the speed of the vehicle is too high or the first static disc and the second static disc are damaged, the outer ring of the brake disc main body is inlaid with the groove of the movable disc, the transition disc and the brake disc main body drive the movable disc and the connecting wheel to rotate, so that the torsion spring is driven to twist, the torsion force of the torsion spring is increased, the torsion of the movable disc is limited by utilizing the reaction force of the torsion spring, and the torsion spring, the first static disc and the second static disc are mutually matched, so that the braking distance of the vehicle is reduced; the friction force between the buffer wheel and the bearing of the brake disc main body is larger than the friction force between the connecting wheel and the buffer wheel, and the rotating speed of the connecting wheel is larger than the rotating speed of the buffer wheel when the connecting wheel and the buffer wheel are subjected to the same rotating force; when the torsion spring works, in order to avoid the torsion spring from breaking when rotating along with the connecting wheel, when the torsion force of the torsion spring is close to a limit value, the torsion spring drives the buffer wheel to rotate, so that the braking of the movable disc is realized by virtue of the friction force between the buffer wheel and the bearing of the brake disc main body, and the braking of a vehicle is realized while the protection of the torsion spring is realized;
during normal driving, the spring force acts on the movable disc to separate the movable disc from the fixed disc adhered to the torque tube, the first fixed disc adhered to the steel back is pulled back by the push type hydraulic element, and the limiting block can limit the return stroke of the movable disc to avoid contact between the movable disc and the first fixed disc on the steel back; during service braking, the push type hydraulic element generates thrust to press the movable disc, the first static disc and the second static disc together, so that friction force is generated between the movable disc and the static disc, the movable disc and the transition disc gradually stop rotating, and then a power output shaft of a vehicle is slowly stopped, and a braking effect is achieved;
when the large-angle ramp is parked in a short time, the push-type hydraulic element is pushed out, the parking spring is matched with the push-type hydraulic element to act on the steel back at the same time, and the movable and static disc groups are pressed tightly, so that a short-time large-gradient parking effect is achieved; when the automobile is parked and braked for a long time, the push type hydraulic element and the pull type hydraulic element return to the initial state, the elastic force of the parking spring is used for attaching the movable disc and the static disc, and the generated friction force can enable the unmanned armored automobile to park for a long time.
2. The vehicle brake device according to claim 1, characterized in that: the first static disc, the second static disc and the movable disc are made of carbon ceramic or other wear-resistant materials.
3. The vehicle brake device according to claim 2, characterized in that: the push type hydraulic element, the pull type hydraulic element and the parking spring are respectively distributed in a cross mode.
4. A vehicle brake arrangement according to claim 3, characterized in that: the bottom plate of the fixed flange plate is connected with a gear box of the vehicle.
5. The vehicle brake device according to claim 1, characterized in that: the fixed flange plate is provided with an installation flange and a thermal warehouse installation frame which are used for connecting the hydraulic action module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211550714.0A CN115773318B (en) | 2022-12-05 | 2022-12-05 | Vehicle braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211550714.0A CN115773318B (en) | 2022-12-05 | 2022-12-05 | Vehicle braking device |
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| Publication Number | Publication Date |
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| CN115773318A CN115773318A (en) | 2023-03-10 |
| CN115773318B true CN115773318B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211550714.0A Active CN115773318B (en) | 2022-12-05 | 2022-12-05 | Vehicle braking device |
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| CN (1) | CN115773318B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116691761B (en) * | 2023-05-04 | 2024-02-13 | 香花岭锡业有限责任公司 | Mining inclined roadway sports car protector |
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| CN103375515A (en) * | 2012-04-13 | 2013-10-30 | 上海宇意机械有限公司 | Service and parking linked multi-disc wet hydraulic brake |
| CN203335686U (en) * | 2013-07-10 | 2013-12-11 | 常州南车铁马科技实业有限公司 | Wet multiple-disc brake for heavy truck |
| CN203962790U (en) * | 2014-06-30 | 2014-11-26 | 苏世全 | Trailing wheel braking improved system |
| KR20170091316A (en) * | 2016-02-01 | 2017-08-09 | 한국생산기술연구원 | Brake apparatus for wagon |
| CN109578476A (en) * | 2018-12-30 | 2019-04-05 | 河北百龙汽车配件制造有限公司 | A kind of strong cooling brake disc |
| CN109780090A (en) * | 2019-01-29 | 2019-05-21 | 浙江诸暨万宝机械有限公司 | A kind of electronic parking system for matching double-piston with double actuators |
| CN110541900A (en) * | 2019-08-22 | 2019-12-06 | 北京北摩高科摩擦材料股份有限公司 | Helicopter brake device |
| CN211924783U (en) * | 2020-04-19 | 2020-11-13 | 安徽博行机械有限公司 | Double-piston brake assembly |
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| CN115773318A (en) | 2023-03-10 |
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