CN201679529U - Constant-pressure exhaust brake valve - Google Patents
Constant-pressure exhaust brake valve Download PDFInfo
- Publication number
- CN201679529U CN201679529U CN2010201713501U CN201020171350U CN201679529U CN 201679529 U CN201679529 U CN 201679529U CN 2010201713501 U CN2010201713501 U CN 2010201713501U CN 201020171350 U CN201020171350 U CN 201020171350U CN 201679529 U CN201679529 U CN 201679529U
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- Prior art keywords
- valve body
- valve
- arm shaft
- relief piston
- pressure
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- Expired - Lifetime
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 7
- 239000010865 sewage Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
A constant-pressure exhaust brake valve relates to the technical field of brake valves throttling burning type engine exhaust pipes and is provided with a valve body. One end of a rocker arm shaft penetrates through the valve body and a sealing ring to extend out, the other end of the rocker arm shaft is connected with a valve plate, wherein a pressure regulating piston is disposed on the valve body in a direction perpendicular to an axis of the rocker arm shaft, the front end surface of the pressure regulating piston is flush with the inner surface of a cavity of the valve plate of the valve body, the outer side surface of the pressure regulating piston is provided with a guide groove, a guide pin on the valve body extends into the guide groove, a pressure regulating spring is arranged between the pressure regulating piston and a base, the base is fixed in a pressure regulating piston cavity of the valve body via an elastic clamp ring, and a sewage holding groove is disposed on the inner peripheral surface of the pressure regulating piston cavity of the valve body and communicated with the cavity of the valve plate of the valve body through a sewage drainage hole. The constant-pressure exhaust brake valve is applicable to brake of automobiles.
Description
Technical field
The utility model relates to a kind of control gear to burning type engine, particularly a kind of constant pressure type exhaust braking valve that outlet pipe is carried out throttling.
Background technique
Truck is the long-time Service Brake that uses under long descending situation, brake temperature is sharply raise, the vapour lock that causes heat fade and Hydraulic braking system makes the Braking efficiency of automobile and significantly descends the working life of break, has a strong impact on the safety of driving.In order to alleviate the burden of Service Brake, improve the automobile conveying efficiency, guarantee traffic safety, truck all is equipped with auxiliary brake, utilizes engine exhaust and brake to reach the purpose of deceleration.Exhaust brake is a reverse driving motor and transmission shaft is produced rotational resistance come braking vehicle.Air pressure in the motor normal exhaust stroke almost equates with atmospheric pressure, piston-top surface is not stressed, if in vent systems, install exhaust braking, when work, because outlet pipe is deflated braking device and cuts out, engine exhaust is obstructed, make the blocked compression of air in the outlet pipe, pressure in the outlet pipe raises, and the exhaust stroke of engine piston must overcome this pressure, makes the piston head of exhaust stroke be compressed the reverse pressure effect of air, hinder the running of motor, reach wheel through bent axle and power train, automobile is played braking action, realize the control speed of a motor vehicle.
In the prior art, there is multiple heteroid exhaust braking valve to be applied on the automobile.This Figure of description 5 is just enumerated a kind of structure of prior art exhaust braking valve, it has a valve body 15; pitman arm shaft 13 1 ends pass valve body 15 and seal ring 14 stretches out; pitman arm shaft 13 the other ends connect valve block 16; with pitman arm shaft 13 Vertical direction relief piston 17 is set; relief piston 17 stretches in the valve block chamber of valve body 15; relief piston 17 bottoms are pressed on the front stall 21; front stall 21 outer side surfaces have guiding groove 18; guide finger 19 on the valve body 15 stretches in the guiding groove 18, front stall 21 and the base 22 middle pressure adjusting springs 20 that are provided with.During work, open and close exhaust braking valve by driving pitman arm shaft 13 rotating band moving valve plates 16, relief piston 17 is subjected to exhaust pressure and pushes front stall 21 compression pressure adjusting springs 20, makes relief piston 17 to seesaw, and stops valve block 16 location.How this exhaust braking valve part causes fault that brake valve was lost efficacy easily, and relief piston 20 stretches into the valve block chamber can not flexible motion, can not make sensitive conditioned reaction by changing of rapid sensitive at exhaust pressure, can not accomplish that to make exhaust pressure constant, and then be that automobile obtains constant braking force, the back pressure of overload can be damaged motor.
The model utility content
In order to solve the technological deficiency that prior art exists, the purpose of this utility model is to provide a kind of constant pressure type exhaust braking valve, and it can obtain stable back pressure, stable braking force and high reliability.
To achieve these goals, the technical solution of the utility model is:
A kind of constant pressure type exhaust braking valve, have a valve body; pitman arm shaft one end passes valve body and seal ring stretches out; the pitman arm shaft the other end connects valve block; wherein: with pitman arm shaft axis normal direction relief piston is set on the valve body; the relief piston front-end face is concordant with the valve block chamber inner face of valve body; the relief piston outer side surface has guiding groove; the guide finger on the valve body stretches in the guiding groove; pressure adjusting spring is set in the middle of relief piston and the base; base is fixed on by elastic collar in the relief piston chamber of valve body, the relief piston chamber inner peripheral surface of valve body has the dirty groove of appearance, holds dirty groove and is communicated with the valve block chamber of valve body by pollutant exhaust hole.
Valve block is by pitman arm shaft and another independently axle support.
Seal ring between pitman arm shaft and the valve body is a high-temperature resistant seal ring.
Because after adopting such scheme, the utility model constant pressure type exhaust braking valve in use, when the constant pressure type exhaust braking valve is opened, the motor normal exhaust; When vehicle is taked brake measure; pitman arm shaft is driven rotation connected valve block is closed; the waste gas that the exhaust stroke of piston is discharged can not smooth and easyly be discharged; cause that gas pressure improves in the gas exhaust piping, this pressure feedback forms the back pressure to piston to piston; back pressure pressure is that to go out force direction opposite with the motor proper functioning; engine speed is reduced, and this back pressure active force is delivered to wheel by transmission system, forms vehicle braked.The exhaust pressure of motor is not constant, when exhaust pressure during greater than setting value, this pressure promotes the elastic force that relief piston overcomes pressure adjusting spring and slides, and makes between relief piston and the valve block and forms the gap, the part exhaust is discharged from the gap, reduce the pressure in the gas exhaust piping; When exhaust pressure is lower than setting value, pressure adjusting spring promotes the relief piston closing gap, improves the pressure in the gas exhaust piping; Because the real-time adjustment that relief piston changes exhaust pressure guarantees the pressure stability in the gas exhaust piping, reliable and stable to the counterpressure of engine piston just, the transmission system by vehicle provides stable braking force to wheel.The design of constant pressure type exhaust braking valve is succinct, and part is few, holds dirty groove and pollutant exhaust hole the carbon deposit on the relief piston is discharged, and prevents that relief piston is stuck, and reduces rate of fault, improves functional reliability.
Description of drawings
Fig. 1 is the utility model constant pressure type exhaust braking valve sectional view;
Fig. 2 is the A-A view of the utility model constant pressure type exhaust braking valve Fig. 1, not working state;
Fig. 3 is the A-A view of the utility model constant pressure type exhaust braking valve Fig. 1, half working state;
Fig. 4 is the A-A view of the utility model constant pressure type exhaust braking valve Fig. 1, working state;
Fig. 5 is the prior art sectional view.
Label in the accompanying drawing:
1. valve body, 2. pitman arm shaft, 3. valve block, 4. relief piston, 5. guide finger, 6. pressure adjusting spring, 7. guiding groove, 8. seal ring, 9. elastic collar 10. holds dirty groove, 11. pollutant exhaust holes, 12. bases, 13. pitman arm shaft, 14. seal rings, 15. valve bodies, 16. valve blocks, 17. relief piston, 18. guiding grooves, 19. guide fingers, 20. pressure adjusting spring, 21. front stalls, 22. bases.
Embodiment
Be further described below in conjunction with the embodiment of Figure of description the utility model constant pressure type exhaust braking valve.
The structure of the utility model constant pressure type exhaust braking valve as shown in Figure 1, and with reference to Fig. 2, Fig. 3, this constant pressure type exhaust braking valve shown in Figure 4 do not work, structure when half work, working state, the design proposal of complete understanding the utility model constant pressure type exhaust braking valve.
A kind of constant pressure type exhaust braking valve of the present utility model, have a valve body 1; pitman arm shaft 2 one ends pass valve body 1 and seal ring 8 stretches out; cause leakage in order to prevent that seal ring 8 from being ablated by high-temperature exhaust air; sealing circle 8 adopts high-temperature resistant seal rings, stop the high-temperature exhaust air problems such as the poor sealing, the carbon deposit that bring be stuck of scurrying out from valve body 1 and pitman arm shaft 2 connecting parts.Pitman arm shaft 2 the other ends connect valve block 3, and the other end of valve block 3 is by another independently axle support, and stuck by carbon deposit to prevent between valve block 3 and the axle, the rotation that influences valve block is flexible.Pitman arm shaft 2 and valve block 3 rotate pitman arm shaft 2 and valve block 3 by electromagnetic valve cylinder or vacuum reservoir start, and exhaust braking valve is opened or closed.With pitman arm shaft 2 axis normal directions relief piston 4 is set on the valve body 1, relief piston 4 front-end faces are concordant with the valve block chamber inner face of valve body 1, relief piston 4 outer side surfaces have guiding groove 7, guide finger 5 on the valve body 1 stretches in the guiding groove 7, make that relief piston 4 can to-and-fro motion in the relief piston chamber of valve body 1, relief piston 4 and the base 12 middle pressure adjusting springs 6 that are provided with, base 12 is fixed in the relief piston chamber of valve body 1 by elastic collar 9, when the constant pressure type exhaust braking valve is in not working state and half working state, it is concordant that relief piston 4 end faces are in valve block chamber inner face, when the constant pressure type exhaust braking valve is in structural regime, valve block 3 seals the exhaust passage, exhaust pressure is during greater than setting value, exhaust pressure is pushed relief piston 4, compression pressure adjusting spring 6, make valve block 3 and relief piston 4 junctions the slit occur, make high pressure gas release decompression, when pressure is lower than the default elastic force of spring, relief piston 4 recoveries contact with valve block 3, and closes vent passage is along with the fluctuation of exhaust pressure, relief piston 4 quick to-and-fro motion, it is stable that valve body the place ahead pressure is kept, and makes motor obtain stablizing back pressure, makes automobile obtain stable braking force.The relief piston chamber inner peripheral surface of valve body 1 has the dirty groove 10 of appearance, holding dirty groove 10 is communicated with the valve block chamber of valve body 1 by pollutant exhaust hole 11, a small amount of carbon deposit is accumulated in hold in the dirty groove 10, and under the effect of air-flow, automatically be discharged in the outlet pipe of valve block 3 rear ends from pollutant exhaust hole 11, prevent that effectively relief piston 4 is stuck, improve the reliability of pressure adjusting structure.Designed for greater reliability of the present utility model and low operating cost make vehicle obtain stable braking effect, improve the safety of vehicle, saved the Service Brake user cost of automobile, when the wet and slippery road traveling of ice and snow, reduce and break away, when lower long slope, reduce the number of times of service brake, reduce the temperature rise of brake drum, in the reliability that improves braking, fuel saving and tire wear consumption.
Claims (3)
1. a constant pressure type exhaust braking valve has a valve body, and pitman arm shaft one end passes valve body and seal ring stretches out, and the pitman arm shaft the other end connects valve block, it is characterized in that:
With pitman arm shaft axis normal direction relief piston is set on the valve body, the relief piston front-end face is concordant with the valve block chamber inner face of valve body, the relief piston outer side surface has guiding groove, guide finger on the valve body stretches in the guiding groove, pressure adjusting spring is set in the middle of relief piston and the base, base is fixed on by elastic collar in the relief piston chamber of valve body, and the relief piston chamber inner peripheral surface of valve body has the dirty groove of appearance, holds dirty groove and is communicated with the valve block chamber of valve body by pollutant exhaust hole.
2. constant pressure type exhaust braking valve according to claim 1 is characterized in that: valve block is by pitman arm shaft and another independently axle support.
3. constant pressure type exhaust braking valve according to claim 1 is characterized in that: the seal ring between pitman arm shaft and the valve body is a high-temperature resistant seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201713501U CN201679529U (en) | 2010-04-27 | 2010-04-27 | Constant-pressure exhaust brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201713501U CN201679529U (en) | 2010-04-27 | 2010-04-27 | Constant-pressure exhaust brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679529U true CN201679529U (en) | 2010-12-22 |
Family
ID=43344577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201713501U Expired - Lifetime CN201679529U (en) | 2010-04-27 | 2010-04-27 | Constant-pressure exhaust brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287271A (en) * | 2011-06-13 | 2011-12-21 | 瑞立集团瑞安汽车零部件有限公司 | Constant pressure exhaust brake valve for automobile engine |
| CN112431678A (en) * | 2020-12-31 | 2021-03-02 | 潍柴动力扬州柴油机有限责任公司 | Constant pressure exhaust brake pressure limiting valve |
-
2010
- 2010-04-27 CN CN2010201713501U patent/CN201679529U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287271A (en) * | 2011-06-13 | 2011-12-21 | 瑞立集团瑞安汽车零部件有限公司 | Constant pressure exhaust brake valve for automobile engine |
| CN112431678A (en) * | 2020-12-31 | 2021-03-02 | 潍柴动力扬州柴油机有限责任公司 | Constant pressure exhaust brake pressure limiting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-pressure exhaust brake valve Effective date of registration: 20121225 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2012990000848 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20131205 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2012990000848 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-pressure exhaust brake valve Effective date of registration: 20131224 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2013990001017 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20141127 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2013990001017 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-pressure exhaust brake valve Effective date of registration: 20141128 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2014990001011 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151215 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2014990001011 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-pressure exhaust brake valve Effective date of registration: 20151217 Granted publication date: 20101222 Pledgee: Qingdao Guarantee Center Co., Ltd. Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2015990001116 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170508 Granted publication date: 20101222 Pledgee: Qingdao financing guarantee Centre Limited Pledgor: Qingdao Zhiyuan Auto Parts Co., Ltd. Registration number: 2015990001116 |
|
| PM01 | Change of the registration of the contract for pledge of patent right | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20170508 Registration number: 2015990001116 Pledgee after: Qingdao financing guarantee Centre Limited Pledgee before: Qingdao Guarantee Center Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190729 Address after: 266107 No. 18 Danshun Road, Xiazhuang Street, Chengyang District, Qingdao City, Shandong Province Patentee after: Qingdao burick Automobile Technology Co Ltd Address before: 266109 130 Baifu Road, Chengyang District, Qingdao City, Shandong Province Patentee before: Qingdao Zhiyuan Auto Parts Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |