CN103144622A - Automobile hydraulic braking device - Google Patents
Automobile hydraulic braking device Download PDFInfo
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- CN103144622A CN103144622A CN2013100943542A CN201310094354A CN103144622A CN 103144622 A CN103144622 A CN 103144622A CN 2013100943542 A CN2013100943542 A CN 2013100943542A CN 201310094354 A CN201310094354 A CN 201310094354A CN 103144622 A CN103144622 A CN 103144622A
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Abstract
The invention discloses an automobile hydraulic braking device, which comprises an oil pump, a filter, a pressure gauge, a control valve, a braking oil cylinder, an adjustable flow valve, an overflow valve and an oil return pipe, wherein an oil inlet and an oil return port are formed in one side of the valve body of the control valve, and an oil outlet is formed in the other side of the valve body of the control valve; a spring is arranged between the tail end of the valve core and the valve body; the valve core is provided with a valve hole; when the valve core moves, the oil outlet is communicated with the oil inlet or the oil return port through a valve hole; a cylinder body oil inlet of a braking oil cylinder is provided with an oil pipe joint; a belleville spring is arranged between the tail end of a piston and the cylinder body; a brake block is fixed to the cylinder body through a stop screw; the tail end of a piston rod is then connected with the brake block through a connecting screw; the oil pump is connected with the filter; the filter is communicated with the oil inlets of the overflow valve and the control valve through an oil path provided with the pressure gauge respectively; the oil outlet of the control valve is communicated with an oil pipe joint of the braking oil cylinder; the oil return port is communicated with the adjustable flow valve; and the overflow valve is connected with the oil return pipe. The automobile hydraulic braking device has extremely high safety and reliability, and the driving risk can be effectively reduced.
Description
Technical field
The invention belongs to automobile manufacturing field, relate to brake system of car, be specifically related to a kind of hydraulic vehicle brake system.
Background technology
The roadlice that uses now, brake equipment are generally tight lock brakings.Its groundwork is that roadlice is when normally travelling, keep certain interval between brake pad and 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 reduce, stop, reaching deceleration or stop.
Generally, as long as driving engine and hydraulic braking system can work, the deceleration and stopping performance of roadlice or safe and reliable.But running into abnormal condition may cause braking failure and cause the accident.When just causing flame-out at the real so abnormal misfire of the automobile of descent run or navigating mate maloperation, the braking liquid press pump quits work because of driving engine, export without pressure oil, 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, probably cause a serious accident.In the parking on ramp situation, if the engine off driver forgets the tension braking during standstill, even in the situation that engage a gear, because brake pump shuts down without pressure oil output, service brake this moment is invalid, may slip the car accident.
According to statistics, in the car transportation 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 present invention is the defective that exists in order to solve above-mentioned prior art, and a kind of hydraulic vehicle brake system is provided, to improve safety and reliability.
The present invention is achieved by 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 valve body, offers valve opening on spool, and when spool moved, oil outlet was by valve opening UNICOM's 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 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 manometric oil circuit oil inlet of UNICOM's by pass valve and control cock respectively, 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 after the oil pump operation, the pressure oil of 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 the 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 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 brake cylinder, fluid is under the antagonistic force that resets of belleville spring promotes, the fluid extruding that plunger shaft internal pressure oil is distinguished is back to return opening, return to simultaneously fuel tank with the fluid of oil inlet, promote simultaneously brake pad and move axially the extruding brake disc and produce friction drag, slow down or stop after overcoming automobile inertial power.Control cock and brake cylinder plunger miles of relative movement are linear, and plunger miles of relative movement is larger, and pressure oil is less by the flow of oil outlet, and larger by the flow of return opening, brake lining is also larger to the application force of disk brake lock, and the friction drag of automobile is also larger; 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 to fuel tank by return opening, the contact between brake pad and disk brake lock to the limit, the lock torque of this moment is also just maximum.
When automobile in motion in driving engine and 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 not have an accident.When the needs emergency braking, once will brake valve rod and shift stop onto, the pressure fast-descending in plunger shaft, pressure oil returns to 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 present invention can be docked with the safety assisting systems such as ABS, EBD in existing automotive technology, installation method by the ABS in existing automotive technology, EBD system, the electromagnetic valve that configuration is necessary and corresponding pipeline, circuit, can with hydraulic brake system seamless combination provided by the invention, 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 present invention is simple in structure, has very high safety and reliability during work, can effectively reduce the driving risk.
Description of drawings
Fig. 1 is brake equipment hydraulic schematic diagram of the present invention;
Fig. 2 is the structural representation of brake cylinder;
Fig. 3 is the braking mode figure of brake cylinder;
Fig. 4 be brake cylinder the constitution diagram that declutches;
Fig. 5 is the structural representation of control cock;
Fig. 6 is the braking mode schematic diagram of control cock;
In 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
The present invention will be further described below in conjunction with accompanying drawing.
A kind of hydraulic vehicle brake system as 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 valve body 13, offer valve opening 15 on 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 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 filter 5 is distinguished the oil inlet 9 of UNICOM's by pass valve 1 and control cock 3, the oil connector 16 of oil outlet 11 UNICOM's brake cylinders 4 of control cock, return opening 10 UNICOM's adjustable throttlings 8 by the oil circuit that is provided with compression indicator 2; Described by pass valve 1 connects oil return pipe 6.
After 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 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, and pushing piston compression belleville spring reaches the effect that declutches, and installs adjustable throttling on oil return line, adjusts the uninterrupted of flow regulating valve, can control the length of braking time; If the braking procedure overlong time need to suitably tune up throttle flow rate, 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 inputted 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 is without displacement, 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 to 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 without the pressure condition, its principle is: in pressure chamber during without 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, and pushing piston 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 that engine running and hydraulic braking system work.
Manual operation braking principle in 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.If need braking to be undertaken by the size that foot control valve is regulated recirculating oil quantity and pressure, the less recirculating oil quantity of pressure is larger, and braking time is shorter, and lock torque is larger.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 screw plug gap increase to right rotation, adjust suitable after, locating piece is fastening, prevent from becoming flexible, generally the gap between brake shoe and brake disc should be adjusted between 0.8mm ± 0.02, 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 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 valve body (13), offer valve opening (15) on 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 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 |
|---|---|---|---|
| CN201310094354.2A CN103144622B (en) | 2013-03-23 | 2013-03-23 | A kind of hydraulic vehicle brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310094354.2A CN103144622B (en) | 2013-03-23 | 2013-03-23 | A kind of hydraulic vehicle brake system |
Publications (2)
| Publication Number | Publication Date |
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| CN103144622A true CN103144622A (en) | 2013-06-12 |
| CN103144622B CN103144622B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310094354.2A Expired - Fee Related CN103144622B (en) | 2013-03-23 | 2013-03-23 | A kind of hydraulic vehicle brake system |
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| CN (1) | CN103144622B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387101A (en) * | 2015-10-28 | 2016-03-09 | 湘潭市恒欣实业有限公司 | Passive hydraulic braking system |
| CN105485217A (en) * | 2016-01-21 | 2016-04-13 | 湖州职业技术学院 | Hydraulic snubbing braking system |
| CN109080616A (en) * | 2018-09-21 | 2018-12-25 | 河南城建学院 | Guide's braking system for move vehicle safety traffic |
| CN109083612A (en) * | 2018-10-23 | 2018-12-25 | 招商局重工（江苏）有限公司 | A kind of blowout preventer hydraulic locking device and locking method |
| CN112677948A (en) * | 2021-01-04 | 2021-04-20 | 东风汽车股份有限公司 | Automatic pressurizing system of hydraulic booster and control method thereof |
| CN113389829A (en) * | 2021-06-10 | 2021-09-14 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973969B (en) * | 2018-07-26 | 2020-05-19 | 宁波日安精工机械有限公司 | High leakproofness car hydraulic brake valve |
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| EP0010292A1 (en) * | 1978-10-23 | 1980-04-30 | Fritzmeier Ag | Hydraulic brake system for tractors |
| CN1121011A (en) * | 1994-09-11 | 1996-04-24 | 阮鸿雁 | Vehicle braking method and apparatus |
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| CN102310849A (en) * | 2010-07-05 | 2012-01-11 | 天津柳工机械有限公司 | Normally-closed brake assist braking system |
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| CN203111165U (en) * | 2013-03-23 | 2013-08-07 | 牛国亮 | Automobile hydraulic brake device |
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2013
- 2013-03-23 CN CN201310094354.2A patent/CN103144622B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0010292A1 (en) * | 1978-10-23 | 1980-04-30 | Fritzmeier Ag | Hydraulic brake system for tractors |
| CN1121011A (en) * | 1994-09-11 | 1996-04-24 | 阮鸿雁 | Vehicle braking method and apparatus |
| CN2334645Y (en) * | 1998-05-28 | 1999-08-25 | 孙永通 | Auxiliary emergency brake for car |
| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387101A (en) * | 2015-10-28 | 2016-03-09 | 湘潭市恒欣实业有限公司 | Passive hydraulic braking system |
| CN105485217A (en) * | 2016-01-21 | 2016-04-13 | 湖州职业技术学院 | Hydraulic snubbing braking system |
| CN105485217B (en) * | 2016-01-21 | 2017-10-10 | 湖州职业技术学院 | Hydraulic pressure point braking system |
| CN109080616A (en) * | 2018-09-21 | 2018-12-25 | 河南城建学院 | Guide's braking system for move vehicle safety traffic |
| CN109083612A (en) * | 2018-10-23 | 2018-12-25 | 招商局重工（江苏）有限公司 | A kind of blowout preventer hydraulic locking device and locking method |
| CN112677948A (en) * | 2021-01-04 | 2021-04-20 | 东风汽车股份有限公司 | Automatic pressurizing system of hydraulic booster and control method thereof |
| CN113389829A (en) * | 2021-06-10 | 2021-09-14 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103144622B (en) | 2015-12-23 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ding Baohua Inventor before: Niu Guoliang |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171204 Address after: 048499 Jincheng City, Shanxi Province, Gaoping City, Nancheng Pang village village Patentee after: Gaoping City Suns Piplines Co., Ltd. Address before: 048105 Zhu Lin Road, Yangcheng County, Jincheng City, Shanxi Province, No. 1 Patentee before: Niu Guoliang |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20190323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |