CN203111165U - Automobile hydraulic brake device - Google Patents
Automobile hydraulic brake device Download PDFInfo
- Publication number
- CN203111165U CN203111165U CN 201320134171 CN201320134171U CN203111165U CN 203111165 U CN203111165 U CN 203111165U CN 201320134171 CN201320134171 CN 201320134171 CN 201320134171 U CN201320134171 U CN 201320134171U CN 203111165 U CN203111165 U CN 203111165U
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- Prior art keywords
- oil
- valve
- brake
- cylinder
- return opening
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- Expired - Fee Related
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- 238000007906 compression Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 74
- 239000012530 fluid Substances 0.000 description 8
- 239000002828 fuel tank Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000003042 antagnostic effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses an automobile hydraulic brake device which comprises an oil pump, a filter, a pressure meter, a control valve, a brake oil cylinder, an adjustable restrictive valve, an overflow valve and an oil return pipe. One side of a valve body of the control valve is provided with an oil inlet and an oil return opening, and the other side of the valve body of the control valve is provided with an oil outlet. A spring is arranged between the tail end of a valve plug and the valve body. A valve hole is formed in the valve plug. When the valve plug moves, the oil outlet is communicated with the oil inlet or the oil return opening through the valve hole. An oil inlet of a cylinder body of the brake cylinder is provided with an oil pipe connector. A butterfly-like spring is arranged between the tail end of a piston and the cylinder body. A brake block and the cylinder body are fixed through a stop screw. The tail end of a piston rod is connected with the brake block through a connecting screw. The oil pump is connected with the filter which is respectively communicated with the overflow valve and the oil inlet of the control valve through an oil way provided with the pressure meter. The oil outlet of the control valve is communicated with the oil pipe connector of the brake oil cylinder. The oil return opening is communicated with the adjustable restrictive valve. The overflow valve is connected with the oil return pipe. The automobile hydraulic brake device is high in safety and reliability and capable of lowering driving risks effectively.
Description
Technical field
The utility model belongs to automobile manufacturing field, relates to brake system of car, is specifically related to a kind of hydraulic vehicle brake system.
Background technology
The present roadlice that uses, brake equipment generally are tight lock brakings.Its groundwork is that roadlice is when normally travelling, keep certain interval between brake pad and the brake disc, when slowing down, stopping or running into the unforeseen circumstances sudden stop, the driver needs pin to step on brake pedal operation brake system, the plunger shaft promotion plunger and the brake pad that enter brake cylinder by pressure oil apply horizontal compression to brake disc simultaneously, and friction drag forces the brake disc rotating speed to reduce, stop, reaching deceleration or stops.
Generally speaking, as long as driving engine and hydraulic braking system can both normal operation, the deceleration and stopping performance of roadlice still is safe and reliable.But running into abnormal condition may cause braking failure and cause the accident.When just causing flame-out at the real right abnormal misfire of the automobile of descent run or navigating mate maloperation, the braking liquid press pump quits work because of driving engine, no pressure oil output, brake pad and brake disc can not relative motions, can't produce friction drag and lose braking function, automobile is because inertia can form unlimited acceleration, and can lead to a disaster this moment because braking.Braking liquid press pump, brake cylinder, valve member, conduit failure and leak in the driving process, braking oil pressure can not keep or complete decompression, also can cause this moment braking to delay or malfunctioning, particularly run at high speed when carrying out emergency braking, cause a serious accident probably.Under ramp parking situation, if the engine off driver forgets the tension braking during standstill, even under the situation of engage a gear, the no pressure oil output because brake pump shuts down, service brake at this moment is invalid, may slip the car accident.
According to statistics, in the roadlice traffic accident, because the accident that brake failure causes is occupied sizable ratio, therefore, how a kind of initiatively roadlice hydraulic brake system of braking that can carry out under failure condition is provided, and safety factor and reliability when improving roadlice and travelling reduce the accident rate that causes because of maloperation of navigating mate, improving the roadlice handling, is the technical barrier that those skilled in the art are badly in need of solving.
Summary of the invention
The utility model is in order to solve the defective that above-mentioned prior art exists, and a kind of hydraulic vehicle brake system is provided, to improve safety and reliability.
The utility model is achieved through the following technical solutions:
A kind of hydraulic vehicle brake system comprises oil pump, filter, compression indicator, control cock, brake cylinder, adjustable throttling, by pass valve, oil return pipe; Valve body one side of described control cock offers oil inlet and return opening, and opposite side offers oil outlet, is provided with spring between the end of spool and the valve body, offers valve opening on the spool, and when spool moved, oil outlet was by valve opening UNICOM oil inlet or return opening; The cylinder body oil inlet of described brake cylinder is provided with oil connector, is provided with belleville spring between piston end and the cylinder body, and brake shoe is fixed by attachment screw and cylinder body, and the end of piston rod connects brake shoe by connecting screw again; Described oil pump connects filter, and filter is by being provided with the oil inlet of manometric oil circuit difference UNICOM's by pass valve and control cock, the oil connector of the oil outlet UNICOM brake cylinder of control cock, return opening UNICOM adjustable throttling; Described by pass valve connects oil return pipe.
After the pressure oil of oil pump operation back output is removed metal fragment, oxide and other impurity through filter, enter described control cock, when automobile normally moves, passage by control cock enters brake cylinder, when brake fluid pressure oil pressure during greater than the elastic force of the belleville spring that automatically resets of brake cylinder inside, oil cylinder piston is to the spring side shifting, force belleville spring to shrink, the plunger that is connected with piston promotes the braking brake shoe and moves, form the gap between brake shoe and the brake disc, make automobile brakeless friction drag, normal operation; When needs slow down or stop, chaufeur operated by foot control cock, valve rod moves to spring terminal with the operating force size is corresponding, when valve rod moves to oil inlet and is communicated with return opening, pressure oil direct short-circuit refluxes, decompression in the brake cylinder, fluid is under the antagonistic force that resets of belleville spring promotes, the fluid extruding in plunger shaft internal pressure oil district is back to return opening, return fuel tank simultaneously with the fluid of oil inlet, promote brake pad simultaneously and move axially the extruding brake disc and produce friction drag, overcome and slow down after the automobile inertial power or stop.Control cock and brake cylinder plunger miles of relative movement are linear, and plunger miles of relative movement is more big, and pressure oil is more little by the flow of oil outlet, and then more big by the flow of return opening, brake lining is also more big to the application force of disk brake lock, and the friction drag of automobile is also more big; When valve rod moved to the dead point, oil inlet was closed fully, and oil outlet directly is communicated with return opening, and pressure oil can not enter brake cylinder, and in-oil cylinder fluid resets under the belleville spring reaction force acts.The fluid in compressive pressure oil district directly returns fuel tank by return opening, contacts pressure to the limit between brake pad and the disk brake lock, and the lock torque of this moment is also just maximum.
When automobile in motion under driving engine and the hydraulic brake system et out of order situation, as long as brake fluid pressure oil circuit decompression piston runs out of steam, deficiency overcomes the antagonistic force of spring, the antagonistic force that belleville spring produces will promote plunger and drive brake pad axial compression stopping-down, guarantees that fault can not enlarge and do not have an accident.When the needs emergency braking, once will brake valve rod and shift stop onto, the pressure in the plunger shaft descends fast, and pressure oil returns fuel tank by return opening rapidly, the brake system automatic train stop that in time resets.The length of braking time can be controlled by the recirculating oil quantity of manual shift adjustable throttling.
The utility model can dock with the safe ancillary systems such as ABS, EBD in the existing automotive technology, by the ABS in the existing automotive technology, the installation method of EBD system, the electromagnetic valve that configuration is necessary and corresponding pipeline, circuit, the hydraulic brake system seamless combination that can provide with the utility model, the lock torque of each tire can be by setting with the car computer, and carry out after high speed relatively calculates, accurately distribute the braking force of each tire, with the safe reliability of guaranteeing to drive a vehicle.
The utility model is simple in structure, has very high safety and reliability during work, can effectively reduce the driving risk.
Description of drawings
Fig. 1 is the utility model brake equipment hydraulic schematic diagram;
Fig. 2 is the structural representation of brake cylinder;
Fig. 3 is the braking mode figure of brake cylinder;
Fig. 4 for brake cylinder the constitution diagram that declutches;
Fig. 5 is the structural representation of control cock;
Fig. 6 is the braking mode scheme drawing of control cock;
Among the figure: 1-by pass valve, 2-compression indicator, 3-control cock, 4-brake cylinder, 5-filter, 6-oil return pipe, 7-oil pump, 8-adjustable throttling, 9-oil inlet, 10-return opening, 11-oil outlet, 12-spool, 13-valve body, 14-spring, 15-valve opening, 16-oil connector, 17-piston, 18-belleville spring, 19-brake shoe, 20-attachment screw, 21-connecting screw.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of hydraulic vehicle brake system shown in Fig. 1,3,5 comprises oil pump 7, filter 5, compression indicator 2, control cock 3, brake cylinder 4, adjustable throttling 8, by pass valve 1, oil return pipe 6; Valve body 13 1 sides of described control cock 3 offer oil inlet 9 and return opening 10, opposite side offers oil outlet 11, be provided with spring 14 between the end of spool 12 and the valve body 13, offer valve opening 15 on the spool 12, when spool 15 moved, oil outlet 11 was by valve opening 15 UNICOM's oil inlets 9 or return opening 10; The cylinder body oil inlet of described brake cylinder 4 is provided with oil connector 16, is provided with belleville spring 18 between piston 17 ends and the cylinder body, and brake shoe 19 is fixed by attachment screw 20 and cylinder body, and the end of piston rod connects brake shoe by connecting screw 21 again; Described oil pump 7 connects filters 5, and the oil circuit of filter 5 by being provided with compression indicator 2 be the oil inlet 9 of UNICOM's by pass valve 1 and control cock 3 respectively, the oil connector 16 of oil outlet 11 UNICOM's brake cylinders 4 of control cock, return opening 10 UNICOM's adjustable throttlings 8; Described by pass valve 1 connects oil return pipe 6.
Behind the oil pump delivery pressure hydraulic oil process filter filtering impurity, one the tunnel enters by pass valve, its effect is the artificial operation pressure value P of setting, keep constant in automobile normal operation period P value, the belleville spring in the compressed brake cylinder shrinks and makes drg be in the state of declutching, and second effect is when oil circuit pressure surpasses the P value, by pass valve is opened automatically, pressure oil is except the maintenance oil cylinder declutches, and part fluid short circuit overflow backflow fuel tank is with the normal operation of protection hydraulic efficiency pressure system safety; Another road enters brake cylinder by control cock, promotes piston compression belleville spring, reaches the effect that declutches, and installs adjustable throttling at oil return line, adjusts the flow size of flow regulating valve, can control the length of braking time; If the braking procedure overlong time need suitably be transferred throttle flow rate greatly, to guarantee the safe and reliable of braking.
The control cock principle of work is as can be seen from Figure 5, pressure oil is imported by oil inlet, remove brake cylinder by valve opening, oil outlet, this moment, pressure oil was oil inlet and passage of oil outlet, when the brake cylinder internal pressure reaches the P value, and the piston arrives stop that declutches, belleville spring is retracted to minimum, if spool does not have displacement, then piston, belleville spring damper brake keep relative static balance state, and state namely declutches; When needs are braked, as long as to return opening direction moving valve core, make into and out of, return opening to be interconnected, the pressure oil short circuit is returned fuel tank by return opening, system pressure will descend, and the brake cylinder piston resets under the belleville spring reaction force acts and makes the brake disc braking.Accompanying drawing 6 is seen in its braking mode bottom spool position.
The principle of work of brake cylinder is as can be seen from Figure 2, brake cylinder is in the safety arrestment state under no pressure condition, its principle is: in the pressure chamber during no pressure oil, piston and piston rod are oppressed brake shoe to the right under the belleville spring reaction force acts, make brake disc and brake shoe be in braking mode because of the pressure friction; Pressure oil enters the oil cylinder cavity by oil connector, promotes piston and moves axially to the left, forces spring contraction, piston to be moved to the left the condition of declutching that reaches when moment surpasses belleville spring elastic force.This brake cylinder is normally closed braking type, as long as engine stoping operation or hydraulic braking system decompression, brake cylinder all can want to declutch because of the belleville spring braking that automatically resets, and must be under the prerequisite of engine running and hydraulic braking system normal operation.
Manual operation braking principle in the driving, in normal driving process, brake cylinder has been full of pressure oil in the chamber, will brake brake shoe and brake disc unclamps, and the formation certain interval can normally travel automobile.Braking can be undertaken by the size that foot control valve is regulated recirculating oil quantity and pressure if desired, and the more little recirculating oil quantity of pressure is more big, and braking time is more short, and lock torque is more big.The adjustment in brake pad and brake disc gap as shown in Figure 4, is unclamped holding screw under the state of declutching, remove locating piece, screw plug is adjusted in rotation to the left, and the gap dwindles, and adjusts the screw plug gap to right rotation and increases, adjust suitable after, locating piece is fastening, prevent from becoming flexible, the gap between brake shoe and the brake disc should be adjusted between 0.8mm ± 0.02 generally speaking, and the gap precision of four brake discs is identical, to guarantee braking effect and safety.The belleville spring of adjusting qualified brake cylinder can only discharge under the free state all 2/3 of height, to guarantee the required moment of safety arrestment under braking mode fully.
Claims (1)
1. a hydraulic vehicle brake system is characterized in that, comprises oil pump (7), filter (5), compression indicator (2), control cock (3), brake cylinder (4), adjustable throttling (8), by pass valve (1), oil return pipe (6); Valve body (13) one sides of described control cock (3) offer oil inlet (9) and return opening (10), opposite side offers oil outlet (11), be provided with spring (14) between the end of spool (12) and the valve body (13), offer valve opening (15) on the spool (12), when spool (15) was mobile, oil outlet (11) was by valve opening (15) UNICOM's oil inlet (9) or return opening (10); The cylinder body oil inlet of described brake cylinder (4) is provided with oil connector (16), be provided with belleville spring (18) between piston (17) end and the cylinder body, brake shoe (19) is fixed by attachment screw (20) and cylinder body, and the end of piston rod connects brake shoe by connecting screw (21) again; Described oil pump (7) connects filter (5), filter (5) is distinguished the oil inlet (9) of UNICOM's by pass valve (1) and control cock (3) by the oil circuit that is provided with compression indicator (2), the oil connector (16) of the oil outlet of control cock (11) UNICOM's brake cylinder (4), return opening (10) UNICOM's adjustable throttling (8); Described by pass valve (1) connects oil return pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320134171 CN203111165U (en) | 2013-03-23 | 2013-03-23 | Automobile hydraulic brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320134171 CN203111165U (en) | 2013-03-23 | 2013-03-23 | Automobile hydraulic brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203111165U true CN203111165U (en) | 2013-08-07 |
Family
ID=48891537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320134171 Expired - Fee Related CN203111165U (en) | 2013-03-23 | 2013-03-23 | Automobile hydraulic brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203111165U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144622A (en) * | 2013-03-23 | 2013-06-12 | 牛国亮 | Automobile hydraulic braking device |
| CN105889373A (en) * | 2016-06-01 | 2016-08-24 | 山东科大机电科技股份有限公司 | Aqueous medium normally-closed disk type braking device with pressurizing cylinder |
| CN106949174A (en) * | 2017-04-17 | 2017-07-14 | 常州机电职业技术学院 | Clutch master cylinder |
| CN107061566A (en) * | 2017-05-23 | 2017-08-18 | 北京航空航天大学 | A kind of power-by-wire aircraft brake system |
| CN111043303A (en) * | 2019-12-16 | 2020-04-21 | 西安法士特汽车传动有限公司 | Automatic transmission braking system |
-
2013
- 2013-03-23 CN CN 201320134171 patent/CN203111165U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144622A (en) * | 2013-03-23 | 2013-06-12 | 牛国亮 | Automobile hydraulic braking device |
| CN103144622B (en) * | 2013-03-23 | 2015-12-23 | 牛国亮 | A kind of hydraulic vehicle brake system |
| CN105889373A (en) * | 2016-06-01 | 2016-08-24 | 山东科大机电科技股份有限公司 | Aqueous medium normally-closed disk type braking device with pressurizing cylinder |
| CN106949174A (en) * | 2017-04-17 | 2017-07-14 | 常州机电职业技术学院 | Clutch master cylinder |
| CN106949174B (en) * | 2017-04-17 | 2022-11-15 | 常州机电职业技术学院 | Clutch master cylinder |
| CN107061566A (en) * | 2017-05-23 | 2017-08-18 | 北京航空航天大学 | A kind of power-by-wire aircraft brake system |
| CN107061566B (en) * | 2017-05-23 | 2018-10-19 | 北京航空航天大学 | A kind of power-by-wire aircraft brake system |
| CN111043303A (en) * | 2019-12-16 | 2020-04-21 | 西安法士特汽车传动有限公司 | Automatic transmission braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20210323 |