CN2199905Y - Vehicle braking device - Google Patents
Vehicle braking device Download PDFInfo
- Publication number
- CN2199905Y CN2199905Y CN 94221751 CN94221751U CN2199905Y CN 2199905 Y CN2199905 Y CN 2199905Y CN 94221751 CN94221751 CN 94221751 CN 94221751 U CN94221751 U CN 94221751U CN 2199905 Y CN2199905 Y CN 2199905Y
- Authority
- CN
- China
- Prior art keywords
- valve
- directional control
- pipeline
- oil pump
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002828 fuel tank Substances 0.000 claims description 13
- 230000004913 activation Effects 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Images
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- Regulating Braking Force (AREA)
Abstract
A hydraulic control brake system is composed of oil pump, change-over valve, overflow valve, brake valve, energy accumulator and oil tank, which are linked together by pump axle and wheel axle. Compared with the prior art, the utility model has the advantages of stationarity and reliability are higher, the power consumption is low.
Description
The utility model relates to a kind of Vehicular brake device.
Modern vehicle forward high-speed overload direction develops, and therefore the requirement of the stationarity of braking, reliability, low energy consumption is more and more high.Brake mode and device that present vehicle generally adopts are: the gas/liquid pressure energy of storing a constant volume by the branch power of driving engine, glancing impact discharges these energy, by compressed air brake cylinder or brake wheel cylinder, actuate brake strap and press to brake hub (or wheel disc), to produce the friction braking moment that stops wheel, produce brake action.This brake mode has following major defects: the one, and the braking energy overwhelming majority converts heat energy to, makes friction pair produce temperature rise, reduces frictional behaviour, promptly so-called heat fade phenomenon; The 2nd, driving engine consumes certain energy always for use for brake system; The 3rd, rubbing effect very easily produces the strict cry of point during emergency braking, and stationarity is not good enough.
The purpose of this utility model just is to overcome above-mentioned weak point of the prior art, and the Vehicular brake device that a kind of stationarity and reliability are higher, power consumption is low is provided.
The purpose of this utility model is achieved in that a kind of Vehicular brake device is as described below, pump shaft and axletree driving coupling oil pump together are through pilot operated directional control valve, by pass valve and fuel tank form a hydraulic circuit, the off-load mouth of said by pass valve by pipeline through a solenoid directional control valve, brake activation valve and fuel tank form another hydraulic circuit, insert an energy storage through a check valve on the pipeline between said pilot operated directional control valve and the by pass valve, the mouth of pipe of said energy storage connects a pressure relay, simultaneously also by pipeline on the valve port of brake activation valve inserts pipeline between pilot operated directional control valve and the by pass valve, said pressure relay control solenoid directional control valve, push up mutually with pedal the upper end of the spool on the said brake activation valve, the controlling spring of lower end and said by pass valve offsets, said oil pump is a two-way oil pump, one outlet termination, one flow regulating valve links to each other with fuel tank by two check valves after a plurality of oil pump parallel connections again.
The utility model compared with prior art has the following advantages: because of adopting hydraulic efficiency pressure system, thereby stationarity, reliability are higher, have abandoned traditional brake strap friction mode, all bad phenomenon that cause behind the no friction Temperature Rise, do not have the inconvenience of frequent brake relining, and system's power consumption is low.
Below in conjunction with embodiment (accompanying drawing), the utility model is further described.
Fig. 1 is the fluid control figure of Vehicular brake device provided by the utility model.In the utility model, pump shaft and axletree driving coupling oil pump 1 together is through pilot operated directional control valve 4, by pass valve 9 forms a hydraulic circuit with fuel tank 14, the off-load mouth of said by pass valve 9 by pipeline through a solenoid directional control valve 8, brake activation valve 12 forms another hydraulic circuit with fuel tank 14, insert an energy storage 7 through a check valve 6 on the pipeline between said pilot operated directional control valve 4 and the by pass valve 9, the mouth of pipe of said energy storage connects a pressure relay 5, simultaneously also by the valve port 15 of pipeline through brake activation valve, on 16 pipelines that insert between pilot operated directional control valve 4 and the by pass valve 9, said pressure relay 5 control solenoid directional control valves 8, push up mutually with pedal 13 upper end of the spool 11 on the said brake activation valve, the controlling spring of lower end and said by pass valve 9 offsets, said oil pump is a two-way oil pump, one outlet termination, one flow regulating valve 2 links to each other with fuel tank 14 by two check valves 3 after a plurality of oil pump parallel connections again.
The concrete principle of work and the process of above-mentioned device are as follows: during normal vehicle operation, the off-load mouth of by pass valve links to each other with fuel tank 14 by solenoid directional control valve 8, make the by pass valve off-load, pump to go out oil pressure almost nil, wheel drive pump dallies like this, does not produce the flowed friction square that stops wheel.During car brakeing, chaufeur push down on the pedal 13 moves down spool 11, cuts off the path of off-load mouth and fuel tank 14 thereupon, and fluid need be set up certain pressure and just can flow through by pass valve 9 like this, and the oil outlet of pump will produce the resisting moment that stops pump shaft to rotate once set up pressure.The size of oil pressure depends on the amount of compression of controlling spring 10, pedal displacement big more (treadle effort is big more), and the compression of spring amount is also big more, and oil liquid pressure is also big more, and lock torque is also just big more.This point is that the operating process with the traditional braking mode is the same, so the operating habit of chaufeur need not to adjust.Because pump leaks, when brake action makes the speed of a motor vehicle more and more hour, the delivery rate of pump also reduces thereupon, and after flow was too small, oil pressure also can reduce, even when car did not also stop, pump pressure had been zero, so just can not produce lock torque.This back braking procedure is just finished by energy storage 7 and brake activation valve 12: chaufeur continues push down on the pedal, and when making spool 11 move down into valve port 15 to communicate the position with 16, the pressure oils in the energy storage 7 pour in down a chimney into pump 1, produce to brake square, brake after finishing.The pressurising of energy storage 7 has two place's approach: one, when its pressure decay during to specified value, pressure relay 5 senders get the electromagnet DT of solenoid directional control valve 8, thereby oil pipe is blocked in the right position incision of change-over valve 8, make by pass valve 9 be in non-unloading condition, 1 pair of energy storage 7 topping up of pump at this moment are until the operating pressure that reaches pressure relay 7, sender again, make electromagnet DT dead electricity, by pass valve is in unloading condition, normal vehicle operation; Two, initial glancing impact, if energy-storing device pressure does not reach specified value, the pressure oil that pump is discharged is in fact at first opened check valve 6 and is entered energy-storing device 7, has only after energy-storing device 7 pressure reach specified value, fluid is just opened by pass valve 9, flows into fuel tank.Even therefore the first pressurising approach lost efficacy, braking procedure after still can finishing reliably.Fuel tank 14, check valve 3, oil filter 17 constitute two-way oil supply loop, the braking when adapting to the vehicle advance and retreat.During the upper incision oil circuit of pilot operated directional control valve 4 vehicle advance, the next automatic incision oil circuit of change-over valve 4 when retreating, can finish the braking when retreating.Change-over valve 4 also can be made the interlock of other form, the next incision oil circuit when guaranteeing vehicle rollback, upper incision oil circuit when advancing with gearshift.The effect of flow regulating valve 2 is distribution of regulating braking force between waggon axle, and also the valve of available other form replaces, as by pass valve etc.
Claims (1)
1, a kind of Vehicular brake device, it is characterized in that: pump shaft and axletree driving coupling oil pump [1] together is through pilot operated directional control valve [4], by pass valve [9] forms a hydraulic circuit with fuel tank [14], the off-load mouth of said by pass valve [9] by pipeline through a solenoid directional control valve [8], brake activation valve [12] forms another hydraulic circuit with fuel tank [14], insert an energy storage [7] through a check valve [6] on the pipeline between said pilot operated directional control valve [4] and the by pass valve [9], the mouth of pipe of said energy storage connects a pressure relay [5], simultaneously also by the valve port [15] of pipeline through brake activation valve, [16] on the pipeline between access pilot operated directional control valve [4] and the by pass valve [9], said pressure relay [5] control solenoid directional control valve [8], push up mutually with pedal [13] upper end of the spool on the said brake activation valve [11], the controlling spring [10] of lower end and said by pass valve [9] offsets, said oil pump is a two-way oil pump, one outlet termination one flow regulating valve [2] links to each other with fuel tank [14] by two check valves [3] after a plurality of oil pump parallel connections again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221751 CN2199905Y (en) | 1994-09-12 | 1994-09-12 | Vehicle braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221751 CN2199905Y (en) | 1994-09-12 | 1994-09-12 | Vehicle braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199905Y true CN2199905Y (en) | 1995-06-07 |
Family
ID=33835967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94221751 Expired - Fee Related CN2199905Y (en) | 1994-09-12 | 1994-09-12 | Vehicle braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199905Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480218A (en) * | 2016-01-31 | 2016-04-13 | 张学栋 | Wear-free hydraulic braking method, device and vehicle |
| CN107532590A (en) * | 2015-04-17 | 2018-01-02 | 博格华纳公司 | Hydraulic control system for the positive displacement pump assemblies and combination of the power drive system component |
-
1994
- 1994-09-12 CN CN 94221751 patent/CN2199905Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532590A (en) * | 2015-04-17 | 2018-01-02 | 博格华纳公司 | Hydraulic control system for the positive displacement pump assemblies and combination of the power drive system component |
| CN105480218A (en) * | 2016-01-31 | 2016-04-13 | 张学栋 | Wear-free hydraulic braking method, device and vehicle |
| CN105480218B (en) * | 2016-01-31 | 2019-04-05 | 张学栋 | It is a kind of without abrasion hydraulic braking method, apparatus and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |