CN103144622B - A kind of hydraulic vehicle brake system - Google Patents
A kind of hydraulic vehicle brake system Download PDFInfo
- Publication number
- CN103144622B CN103144622B CN201310094354.2A CN201310094354A CN103144622B CN 103144622 B CN103144622 B CN 103144622B CN 201310094354 A CN201310094354 A CN 201310094354A CN 103144622 B CN103144622 B CN 103144622B
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- oil
- brake
- valve
- unicom
- control cock
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- 238000007906 compression Methods 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 73
- 239000012530 fluid Substances 0.000 description 8
- 239000002828 fuel tank Substances 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003042 antagnostic effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency 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
- 239000000446 fuel 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
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of hydraulic vehicle brake system.Comprise oil pump, filter, compression indicator, control cock, brake cylinder, adjustable throttling, by pass valve, oil return pipe; The valve body side of control cock offers oil inlet and return opening, and opposite side offers oil outlet, is provided with spring, spool offers valve opening between the end of spool and valve body, and when spool moves, oil outlet is by valve opening UNICOM oil inlet or return opening; The cylinder body oil inlet of 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; 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; By pass valve connects oil return pipe.The present invention has very high safety and reliability, can effectively reduce driving risk.
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 of present use, brake equipment is generally the braking of tight lock.Its groundwork is that roadlice is when normally travelling, certain interval is kept between brake pad and brake disc, when slowing down, stopping or run into unforeseen circumstances sudden stop, driver needs pin to step on brake pedal operation brake system, apply horizontal compression to brake disc while of being entered plunger shaft promotion plunger and the brake pad of brake cylinder by pressure oil, friction drag forces brake disc rotating speed to reduce, stops, reaching and slow down or stop.
Generally, as long as driving engine and hydraulic braking system can normally work, the deceleration and stopping performance of roadlice or safe and reliable.But run into abnormal condition may cause braking failure and cause the accident.When just causing flame-out in the automobile of descent run real so abnormal misfire or navigating mate maloperation, braking liquid press pump quits work because driving engine is stopped transport, export without pressure oil, brake pad and brake disc can not relative motions, cannot friction drag be produced and lose braking function, automobile can form unlimited acceleration due to inertia, now can lead to a disaster because braking.When braking liquid press pump, brake cylinder, valve member, conduit failure in driving conditions with leak, braking oil pressure can not keep or complete decompression, braking now also can be caused to delay or malfunctioning, particularly run at high speed when carrying out emergency braking, probably cause a serious accident.In parking on ramp situation, if engine off driver forgets tension braking during standstill, even if when engage a gear, to export without pressure oil because brake pump shuts down, now service brake is invalid, may slip car accident.
According to statistics, in car transportation accident, the accident caused because of brake failure occupies sizable ratio, therefore, how a kind of roadlice hydraulic brake system that can carry out initiatively braking is in case of a fault provided, improves safety factor when roadlice travels and reliability, reduce the accident rate caused because of maloperation of navigating mate, improving 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 defect existed to solve above-mentioned prior art, and provides a kind of hydraulic vehicle brake system, 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; The valve body side of described control cock offers oil inlet and return opening, and opposite side offers oil outlet, is provided with spring, spool offers valve opening between the end of spool and valve body, and when spool moves, oil outlet is 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 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.
The pressure oil exported after oil pump runs is removed after metal fragment, oxide and other impurity through filter, enter described control cock, when automobile normally runs, brake cylinder is entered by the passage of control cock, when brake fluid pressure oil pressure is greater than the elastic force of the belleville spring that automatically resets of brake cylinder inside, oil cylinder piston moves to spring side, belleville spring is forced to shrink, the plunger be connected with piston promotes to brake brake shoe and moves, gap is formed between brake shoe and brake disc, make automobile brakeless friction drag, normally run; When needs slow down or stop, chaufeur operated by foot control cock, valve rod moves to spring terminal with operating force size correspondence, when valve rod move to oil inlet be communicated with return opening time, pressure oil direct short-circuit refluxes, decompression in brake cylinder, fluid is under the reset antagonistic force of belleville spring promotes, the fluid extruding in plunger shaft internal pressure oil district is back to return opening, return fuel tank with the fluid of oil inlet simultaneously, promote brake pad simultaneously and move axially extruding brake disc generation friction drag, slow down after overcoming automobile inertial power or stop.Control cock and brake cylinder plunger miles of relative movement linear, plunger miles of relative movement is larger, and pressure oil is less by the flow of oil outlet, and then 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 moves to dead point, oil inlet is closed completely, and oil outlet is directly communicated with return opening, and pressure oil can not enter brake cylinder, and in-oil cylinder fluid resets under belleville spring reaction force acts.The fluid in compressive pressure oil district directly returns fuel tank by return opening, and to the limit, lock torque is now also just maximum for the contact between brake pad and disk brake lock.
When under automobile in motion 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 expand and not have an accident.When needs emergency braking, once shift braking valve rod onto stop, the pressure in plunger shaft declines fast, and pressure oil returns fuel tank by return opening rapidly, and brake system resets automatic train stop in time.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 safety assisting systems such as ABS, the EBD in existing automotive technology, by the installation method of ABS, EBD system in existing automotive technology, 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 set by with car computer, and carry out after high speed compares calculating, accurately distributing the braking force of each tire, to guarantee the safe reliability of driving a vehicle.
Structure of the present invention is simple, has very high safety and reliability, can effectively reduce driving risk during work.
Accompanying drawing explanation
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.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
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 side of described control cock 3 offers oil inlet 9 and return opening 10, opposite side offers oil outlet 11, spring 14 is provided with between the end of spool 12 and valve body 13, spool 12 offers valve opening 15, when spool 15 moves, oil outlet 11 is by valve opening 15 UNICOM oil inlet 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 end 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 filter 5, and filter 5 distinguishes the oil inlet 9 of UNICOM's by pass valve 1 and control cock 3 by the oil circuit being provided with compression indicator 2, the oil connector 16 of the oil outlet 11 UNICOM brake cylinder 4 of control cock, return opening 10 UNICOM adjustable throttling 8; Described by pass valve 1 connects oil return pipe 6.
Fuel pump output pressure hydraulic oil is after filter filtering impurity, one tunnel enters by pass valve, its effect is an artificial setting working pressure P, 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 is more than P value, by pass valve is opened automatically, pressure oil is except maintenance oil cylinder declutches, and part fluid short circuit overflow backflow fuel tank, to protect the normal operation of hydraulic efficiency pressure system safety; Control cock of separately leading up to enters brake cylinder, promotes piston compression belleville spring, reaches the effect that declutches, oil return line installs adjustable throttling, and the uninterrupted of adjustment flow regulating valve, can control the length of braking time; If braking procedure overlong time, need throttle flow rate suitably to tune up, to ensure the safe and reliable of braking.
Control cock principle of work is as can be seen from Figure 5, pressure oil is inputted by oil inlet, brake cylinder is removed by valve opening, oil outlet, now pressure oil is oil inlet and oil outlet passage, and when brake cylinder internal pressure reaches P value, piston arrives declutches stop, belleville spring is retracted to minimum, if spool is without displacement, then piston, belleville spring damper brake keep relative rest equilibrium state, and namely declutch state; When needs are braked, as long as to return opening direction moving valve core, make to be interconnected into and out of, return opening, pressure oil short circuit returns fuel tank by return opening, system pressure will decline, and brake cylinder piston resets and brake disc is braked under belleville spring reaction force acts.Its braking mode bottom spool position, sees accompanying drawing 6.
The principle of work of brake cylinder is as can be seen from Figure 2, brake cylinder is without being in safety arrestment state under pressure condition, its principle is: time in pressure chamber without pressure oil, piston and piston rod oppress brake shoe to the right under belleville spring reaction force acts, make brake disc and brake shoe be in braking mode because of pressure friction; Pressure oil enters oil cylinder cavity by oil connector, promotes piston and moves axially to the left, force spring contraction, piston is moved to the left and reaches the condition of declutching when moment exceedes 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 to automatically reset braking because of belleville spring, wants to declutch, and must be under the prerequisite normally worked at engine running and hydraulic braking system.
Manual operation braking principle in driving, in normal driving conditions, brake cylinder is filled with pressure oil in chamber, braking brake shoe and brake disc is unclamped, and forms certain interval, automobile is normally travelled.If need braking to regulate the size of recirculating oil quantity and pressure to carry out by foot control valve, 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, unclamps holding screw under the state of declutching, remove locating piece, rotate adjustment screw plug to the left, gap shrinks, increase to right rotation adjustment screw plug gap, adjust suitable after, locating piece is fastening, and prevent from loosening, the gap generally between brake shoe and brake disc should adjust between 0.8mm ± 0.02, and the gap precision of four brake discs is identical, to guarantee braking effect and safety.The belleville spring adjusting qualified brake cylinder, under complete braking mode, can only to discharge under free state 2/3 of all height, to ensure moment needed for safety arrestment.
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) side of described control cock (3) offers 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), spool (12) offer valve opening (15); Described spool (12) moves to spring terminal with operating force size correspondence, point three kinds of states in moving process, and first, oil outlet (11) is by the closed return opening (10) of valve opening (15) UNICOM oil inlet (9), simultaneously spool (12); Secondly, oil outlet (11) is by valve opening (15) UNICOM's oil inlet (9) and return opening (10) simultaneously; Finally, spool (12) closes oil inlet (9), and oil outlet (11) is by valve opening (15) UNICOM return opening (10) simultaneously;
The cylinder body oil inlet of described brake cylinder (4) is provided with oil connector (16), piston (17) is provided with belleville spring (18) between 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) distinguishes the oil inlet (9) of UNICOM's by pass valve (1) and control cock (3) by the oil circuit being provided with compression indicator (2), the oil connector (16) of oil outlet (11) UNICOM brake cylinder (4) of control cock, return opening (10) UNICOM adjustable throttling (8), control cock (3) is linear with brake cylinder (4) plunger miles of relative movement; 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 |
|---|---|
| CN103144622A CN103144622A (en) | 2013-06-12 |
| CN103144622B true CN103144622B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310094354.2A Expired - Fee Related CN103144622B (en) | 2013-03-23 | 2013-03-23 | A kind of hydraulic vehicle brake system |
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| Country | Link |
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| CN (1) | CN103144622B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973969A (en) * | 2018-07-26 | 2018-12-11 | 宁波日安精工机械有限公司 | A kind of high leakproofness hydraulic vehicle braking valve |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387101B (en) * | 2015-10-28 | 2018-06-26 | 湘潭市恒欣实业有限公司 | A kind of passive hydraulic braking system |
| CN105485217B (en) * | 2016-01-21 | 2017-10-10 | 湖州职业技术学院 | Hydraulic pressure point braking system |
| CN109080616B (en) * | 2018-09-21 | 2020-02-14 | 河南城建学院 | Pilot brake system for safe driving of mobile vehicle |
| 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 |
| CN113389829B (en) * | 2021-06-10 | 2022-09-30 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
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 device |
| 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 |
| CN102310849A (en) * | 2010-07-05 | 2012-01-11 | 天津柳工机械有限公司 | Normally-closed brake assist braking system |
| CN202608798U (en) * | 2012-05-04 | 2012-12-19 | 陈镇汉 | Novel normally-closed braking device |
| CN203111165U (en) * | 2013-03-23 | 2013-08-07 | 牛国亮 | Automobile hydraulic brake device |
-
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 device |
| 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 |
| CN102310849A (en) * | 2010-07-05 | 2012-01-11 | 天津柳工机械有限公司 | Normally-closed brake assist braking system |
| CN202608798U (en) * | 2012-05-04 | 2012-12-19 | 陈镇汉 | Novel normally-closed braking device |
| CN203111165U (en) * | 2013-03-23 | 2013-08-07 | 牛国亮 | Automobile hydraulic brake device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973969A (en) * | 2018-07-26 | 2018-12-11 | 宁波日安精工机械有限公司 | A kind of high leakproofness hydraulic vehicle braking valve |
| 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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| Publication number | Publication date |
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| CN103144622A (en) | 2013-06-12 |
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| Date | Code | Title | Description |
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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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ding Baohua Inventor before: Niu Guoliang |
|
| TR01 | Transfer of patent right | ||
| 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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| 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: 20151223 Termination date: 20190323 |