CN201395129Y - Control valve of hydraulic retarder - Google Patents
Control valve of hydraulic retarder Download PDFInfo
- Publication number
- CN201395129Y CN201395129Y CN2009200644709U CN200920064470U CN201395129Y CN 201395129 Y CN201395129 Y CN 201395129Y CN 2009200644709 U CN2009200644709 U CN 2009200644709U CN 200920064470 U CN200920064470 U CN 200920064470U CN 201395129 Y CN201395129 Y CN 201395129Y
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- China
- Prior art keywords
- valve
- oil
- valve body
- retarder
- pressure
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- 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
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Abstract
The utility model discloses a control valve of a hydraulic retarder, which comprises an upper valve body and a lower valve body. The upper valve body comprises a safety valve arranged at the front endand an oil-pressure adjusting valve arranged at the rear end; the lower valve body comprises a reversing onset valve at the rear-right end of the upper part of the lower valve body, an oil charge valve at the left-rear end, an oil-slinging valve at the right end of the middle part, a pressure-adjusting reversing valve at the left end of the upper part and an oil discharge valve at the front-leftend; an upper cavity of the oil discharge valve of the lower valve body is communicated with an oil tank through the oil-pressure adjusting valve of the upper valve body and is also communicated withthe oil tank through the safety valve of the upper valve body; the reversing onset valve of the lower valve body is communicated with an external variable-speed pump and is communicated with a rack oil cylinder and the pressure-adjusting reversing valve; the oil-slinging valve is connected with a control oil circuit of the oil-pressure adjusting valve; the oil discharge valve is connected with anoil return circuit of the hydraulic retarder; and the oil charge valve is connected with an oil inlet circuit of the hydraulic retarder. The control valve of the hydraulic retarder can precisely control the oil charge speed, the oil charge volume, the oil charge pressure, the oil discharge pressure and the oil discharge volume of the hydraulic retarder.
Description
Technical field
The utility model relates to a kind of retarder control valve, especially relates to a kind of control cock that is used in the auxiliary braking parts hydrodynamic retarder of load-carrying vehicle driving system.
Background technology
Hydrodynamic retarder is the auxiliary braking parts of load-carrying vehicle driving system, because load-carrying vehicle travels on the ground of various complexity, brake system is required high, hydrodynamic retarder can reduce the brake wearing and tearing, avoid the overheating failure that brakes, improve the service life of braking, when strengthening descending to the control ability of vehicle, make car retardation steady, it is safer to travel, operating noise is little than the retarder of other type, and therefore, hydrodynamic retarder is to having vital function safety, manoevreability, the service life of improving load-carrying vehicle.
The principle of work of existing hydrodynamic retarder is: by unlatching, the closure of control cock on the geared oil pump oil outlet, cog wheel of the oil pump motion in the pinion oil pump, when control cock was closed, cog wheel of the oil pump was by hydraulic brake, power gear on its output shaft is braked thereupon, and reducing gear is braked simultaneously.Control cock adopts electromagnetic valve or motorized valve, fluid that can only the pinion oil pump into and out of, can't carry out accuracy control to the oil-filled speed of hydrodynamic retarder, oil-filled amount, precharge pressure, oil extraction pressure, oil drain quantity, can not be according to the braking force of load-carrying vehicle travel conditions automatic guidance hydrodynamic retarder.
The utility model content
The purpose of this utility model provides a kind of retarder control valve that can carry out accuracy control to the oil-filled speed of hydrodynamic retarder, oil-filled amount, precharge pressure, oil extraction pressure, oil drain quantity.
The purpose of this utility model is achieved through the following technical solutions:
A kind of retarder control valve comprises the upper valve body that is positioned at valve body top and is positioned at the following valve body of valve body lower portion, described upper valve body comprise be arranged at front end safety valve, be arranged at the oil pressure adjusting valve of rear end; Described down valve body comprise the commutation onset valve that is positioned at right-hand member behind the valve body top down, left back end oil charge valve, middle part right-hand member get rid of fuel tap, the pressure regulation change-over valve of the right left end in top and the draining valve of preceding left end; Following valve body draining valve epicoele is communicated with fuel tank by the oil pressure adjusting valve of upper valve body; The draining valve epicoele also is communicated with fuel tank by the safety valve of upper valve body in the following valve body; The commutation onset valve of following valve body is communicated with the external speed pump, and be communicated with tooth bar oil cylinder and pressure regulation change-over valve, get rid of fuel tap and link to each other with the control oil channel of oil pressure adjusting valve, draining valve links to each other with the hydrodynamic retarder oil return circuit, and the oil-feed oil circuit of oil charge valve hydrodynamic retarder links to each other.
Further, also include the tooth bar oil cylinder in the described following valve body, described tooth bar oil cylinder is positioned at the back upper end of valve body down.
Further, described safety valve is the universal safety by pass valve.
Further, described oil pressure adjusting valve is a by pass valve.
Further, described commutation onset valve is a two position three way directional control valve.
Further, described oil charge valve is a two position two-way valve.
Further, the described fuel tap that gets rid of is a two position two-way valve.
Further, described pressure regulation change-over valve is a two position two-way valve.
Further, described draining valve is a check valve.
The utility model provides oil pressure can for the fluid power retarder, simultaneously the oil-filled speed of hydrodynamic retarder, oil-filled amount, precharge pressure, oil extraction pressure, oil drain quantity are carried out accuracy control, so that according to the braking force of load-carrying vehicle travel conditions automatic guidance hydrodynamic retarder.
Description of drawings
Fig. 1 is a hydraulic schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model one embodiment;
Fig. 3 is a right elevation embodiment illustrated in fig. 2;
Fig. 4 is a birds-eye view embodiment illustrated in fig. 2;
Fig. 5 is the cutaway view of C-C line oil charge valve shown in Figure 4 and pressure regulation change-over valve;
Fig. 6 is the cutaway view of A-A line commutation onset valve shown in Figure 3;
Fig. 7 is the cutaway view of B-B line tooth bar oil cylinder shown in Figure 3;
Fig. 8 is the cutaway view of D-D line oil pressure adjusting valve shown in Figure 3;
Fig. 9 is E-E line draining valve shown in Figure 3 and the cutaway view that gets rid of fuel tap, safety valve;
Among the figure: 1. upper valve body; 2. descend valve body; 3. the onset valve commutates; 4. tooth bar oil cylinder; 5. get rid of fuel tap; 6. oil charge valve; 7. oil pressure adjusting valve; 8. pressure regulation change-over valve; 9. draining valve; 10. safety valve; 11. push rod; 12. gear wheel shaft; 13. main valve plug; 14. epicoele spring; 15. spring perch; 16. dish-like valve; 17. spool; 18. spring; 19. plug screw; 20. push rod guide pin bushing; 21. spool; 22. spring; 23. spring perch; 24. plug screw; 25. spring; 26. rack; 27. plug screw; 28. plug screw; 29. spool; 30. limit spring cover; 31. bolt; 32. sleeve; 33. spring; 34. pressure spring.
Among the figure: the oil return of a1. commutation onset valve; A2. the oil-feed of onset valve commutates; A3. the fuel-displaced of onset valve of commutating; B1. get rid of the oil return of fuel tap; B2. get rid of the oil-feed of fuel tap; C1. the oil return of pressure regulation change-over valve; C2. the oil-feed of pressure regulation change-over valve; A. oily back pressure power fuel tank; C. hydrodynamic retarder oil return B. speed-variable pump comes oil; D. pressure oil tank comes oil; E. fuel-displaced (the entering hydrodynamic retarder) of oil charge valve; D1. the oil return of oil pressure adjusting valve; D2. the control oil of oil pressure adjusting valve; D3. the oil-feed of oil pressure adjusting valve; D4. the feedback oil of oil pressure adjusting valve; E1. the oil-feed of safety valve; E2. the oil return of safety valve.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
With reference to Fig. 1-Fig. 4, present embodiment comprises upper valve body 1, following valve body 2, and upper valve body 1 and following valve body 2 are one by bolted connection; Upper valve body 1 is in following valve body 2 upper ends, and the bottom of following valve body 2 is installed on the plane of input hydraulic fluid port of hydrodynamic retarder;
Upper valve body 1 is integrated by safety valve 10, oil pressure adjusting valve 7; Wherein, safety valve 10 is the universal safety by pass valve at the front end of upper valve body 1; Oil pressure adjusting valve 7 is by pass valve in the rear end of upper valve body 1;
Following valve body 2 by commutation onset valve 3, oil charge valve 6, to get rid of fuel tap 5, pressure regulation change-over valve 8, draining valve 9, tooth bar oil cylinder 4 etc. integrated; Commutation onset valve 3 right-hand member behind the top of following valve body 2 is two position three way directional control valve; Oil charge valve 6 is two position two-way valve at the left back end of following valve body 2; Get rid of the right-hand member of fuel tap 5, be two position two-way valve at following valve body 2 middle parts; Pressure regulation change-over valve 8 is left end behind the top of following valve body 2, is two position two-way valve; Draining valve 9 is check valve at the preceding left end of following valve body 2; Tooth bar oil cylinder 4 is in upper end, following valve body 2 back;
The fuel-displaced of commutation onset valve 3 enters tooth bar oil cylinder 4 by following valve body, promote 4 work of tooth bar oil cylinder, rack drives is got rid of fuel tap 5 and oil charge valve 6 work, getting rid of fuel tap 5 links to each other with oil sump tank with the control oil channel of oil pressure adjusting valve 7, the left chamber of oil charge valve 6 links to each other with fuel tank, right chamber links to each other with the import of hydrodynamic retarder, the right chamber of commutation onset valve 3 is communicated with pressure regulation change-over valve 8 left chambeies, the right chamber of pressure regulation change-over valve 8 links to each other with fuel tank, following valve body draining valve 9 cavity of resorptions are communicated with the epicoele of hydrodynamic retarder, draining valve 9 epicoeles are communicated with fuel tank by the oil pressure adjusting valve 7 of upper valve body, and draining valve 9 epicoeles also are communicated with fuel tank by the safety valve 10 of upper valve body in the following valve body.
The oily e1 of draining valve 9 epicoeles enters the safety valve 10 of upper valve body 1 from descending valve body 2 in the following valve body 2, can pass through the e2 oil sump tank; The oil of following valve body draining valve epicoele enters the oil-feed d3 of the oil pressure adjusting valve of upper valve body, can pass through the d1 oil sump tank; Enter the a2 of commutation onset valve from the next oily B of external speed pump by valve body down, can enter tooth bar oil cylinder and pressure regulation change-over valve by the a3 of commutation onset valve, the a1 oil oil sump tank of commutation onset valve; A3 enters the tooth bar oil cylinder, promotes the work of tooth bar oil cylinder, makes the oily D of pressure oil tank enter hydrodynamic retarder by the hydraulic fluid port E of following valve body; The feedback oil of hydrodynamic retarder enters by the b2 that descends valve body and gets rid of fuel tap, again by the b1 oil sump tank; A3 enters down the pressure regulation change-over valve of valve body, can make the d1 oil of the oil pressure adjusting valve in the upper valve body enter c1 by c2, again oil sump tank; The hydrodynamic retarder oil return is from draining valve, by valve body down, and can oil sump tank.
With reference to Fig. 5, oil charge valve 6 is made up of dish-like valve 16 and gear wheel shaft 12; Pressure regulation change-over valve 8 is made up of spool 17 and spring 18, plug screw 19.Oil charge valve 6 is at the right-hand member of following valve body, and middle dish-like valve 16 and the gear wheel shaft 12 of connecting makes oil charge valve 6 be divided into left and right two chambeies; Pressure regulation change-over valve 8 is at the left end of following valve body, and the centre connects spool 17, and right-hand member connects spring 18, and left end connects plug screw 19.
With reference to Fig. 6, commutation onset valve 3 is made up of push rod 11 and push rod guide pin bushing 20, spool 21, spring 22, spring perch 23.Commutation onset valve 3 is in following valve body, and the centre connects spool 21, and left end connects push rod guide pin bushing 20 and push rod 11, and right-hand member connects spring 22 and spring perch 23.
With reference to Fig. 7, tooth bar oil cylinder 4 is made up of plug screw 24 and spring 25, gear wheel shaft 12, rack 26, plug screw 27.Tooth bar oil cylinder 4 in following valve body, middle connection gear bar 26, lower end connection gear axle 12, left end connects plug screw 24 and spring 25, right-hand member connects plug screw 27.
With reference to Fig. 8, oil pressure adjusting valve 7 is made up of plug screw 28 and spool 29, limit spring cover 30, bolt 31, sleeve 32, spring perch 15, spring 33, pressure spring 34.Oil pressure adjusting valve 7 is in upper valve body, and the centre connects spool 29, and left end connects plug screw 28, and right-hand member connects limit spring cover 30, bolt 31, sleeve 32, spring perch 15, spring 33, pressure spring 34 successively.
With reference to Fig. 9, draining valve 9 is made up of upper valve body 1 and following valve body 2, main valve plug 13, epicoele spring 14, the middle part of the following valve body 2 of draining valve 9, and the lower end connects main valve plug 13 and epicoele spring 14, and the upper end connects upper valve body 1; Get rid of fuel tap 5 and form, at the left end of following valve body, upper end connection gear axle 12 by following valve body 2 and gear wheel shaft 12; Safety valve 10 is general by pass valve, at the left end of upper valve body, and the upper end of draining valve 9.
When vehicle needs brake snub, depress brake pedal and produce one and the proportional fuel injection pressure signal of driver command, and arrive two servo-cylinders by pipeline; When the signal oil pressure reaches certain setting value, servo-cylinder promotes immediately to commutate and opens the push rod 11 of imitating valve 3 and make it commutation, the speed-variable pump modulated pressure oil of external system opens by commutation imitates valve 3 arrival tooth bar oil cylinders 4, produce oil pressure, promote gear wheel shaft 12 and open the oil charge valve 6 that is attached thereto, the power fluid of pressure oil tank enters hydrodynamic retarder oil inlet generation brake torque by the dish-like valve 16 of oil charge valve 6 rapidly, wait to make the oil-filled stable of hydrodynamic retarder, the fluid of retarder pump impeller enters draining valve 9 cavity of resorptions that are attached thereto by the oil outlet on it; Main valve plug 13 open amounts of draining valve 9 are decided by the upper and lower cavity oil pressure and the epicoele spring 14 of this valve; Its cavity of resorption oil pressure depends on the mode of operation of hydrodynamic retarder itself, and the epicoele oil pressure is subjected to oil pressure adjusting valve 7 controls.
The size of hydrodynamic retarder moment of torsion magnitude is controlled by the oil pressure of servo-cylinder, this oil pressure is applied on the spring perch 15 of oil pressure adjusting valve 7, its output action is on pressure regulation change-over valve 8, accept to come from the feedback oil pressure of hydrodynamic retarder simultaneously, oil pressure adjusting valve 7 is being controlled draining valve 9 epicoele oil pressure magnitudes in the braking procedure; So oil pressure adjusting valve 7 is torque and the permanent core of turning round Characteristics Control.
In addition, the tooth bar oil cylinder 4 of the fuel-displaced and oil charge valve 6 of oil pressure adjusting valve 7 is connected, promptly control the mode of operation of oil pressure adjusting valve 7 with the mode of operation of oil charge valve 6, to guarantee that at the braking incunabulum epicoele of draining valve 9 has a higher oil pressure sealing draining valve 9, make the fluid of the hydrodynamic retarder cavity generation brake torque that increases sharply, to improve speed of response, simultaneously, the oil pressure overshoot was excessive when the safety valve 10 of draining valve 9 epicoeles can prevent onset, and moment of torsion increases suddenly and damages parts.
Claims (9)
1, a kind of retarder control valve is characterized in that, comprises upper valve body that is positioned at valve body top and the following valve body that is positioned at valve body lower portion, and described upper valve body comprises the safety valve that is arranged at front end, the oil pressure adjusting valve that is arranged at the rear end; Described down valve body comprise the commutation onset valve that is positioned at right-hand member behind the valve body top down, left back end oil charge valve, middle part right-hand member get rid of fuel tap, the pressure regulation change-over valve of the right left end in top and the draining valve of preceding left end; Following valve body draining valve epicoele is communicated with fuel tank by the oil pressure adjusting valve of upper valve body; Following valve body draining valve epicoele also is communicated with fuel tank by the safety valve of upper valve body; The commutation onset valve of following valve body is communicated with the external speed pump, and be communicated with tooth bar oil cylinder and pressure regulation change-over valve, get rid of fuel tap and link to each other with the control oil channel of oil pressure adjusting valve, draining valve links to each other with the hydrodynamic retarder oil return circuit, and oil charge valve links to each other with the oil-feed oil circuit of hydrodynamic retarder.
2, retarder control valve as claimed in claim 1 is characterized in that, also includes the tooth bar oil cylinder in the described following valve body, and described tooth bar oil cylinder is positioned at the back upper end of valve body down.
3, retarder control valve as claimed in claim 1 or 2 is characterized in that, described safety valve is the universal safety by pass valve.
4, retarder control valve as claimed in claim 1 or 2 is characterized in that, described oil pressure adjusting valve is a by pass valve.
5, a kind of according to claim 1 retarder control valve is characterized in that, described commutation onset valve two position three way directional control valve.
6, a kind of according to claim 1 retarder control valve is characterized in that, described oil charge valve is a two position two-way valve.
7, a kind of according to claim 1 retarder control valve is characterized in that, the described fuel tap that gets rid of is a two position two-way valve.
8, a kind of according to claim 1 retarder control valve is characterized in that, described pressure regulation change-over valve is a two position two-way valve.
9, a kind of according to claim 1 retarder control valve is characterized in that, described draining valve is a check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200644709U CN201395129Y (en) | 2009-05-18 | 2009-05-18 | Control valve of hydraulic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200644709U CN201395129Y (en) | 2009-05-18 | 2009-05-18 | Control valve of hydraulic retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201395129Y true CN201395129Y (en) | 2010-02-03 |
Family
ID=41617630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200644709U Expired - Fee Related CN201395129Y (en) | 2009-05-18 | 2009-05-18 | Control valve of hydraulic retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201395129Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402207A (en) * | 2016-09-27 | 2017-02-15 | 北京理工大学 | Hydraulic control system with quick effect and precise braking torque control and for hydraulic retarder |
| CN107472290A (en) * | 2017-08-10 | 2017-12-15 | 江苏今创车辆有限公司 | The control system of hydraulic braking |
-
2009
- 2009-05-18 CN CN2009200644709U patent/CN201395129Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402207A (en) * | 2016-09-27 | 2017-02-15 | 北京理工大学 | Hydraulic control system with quick effect and precise braking torque control and for hydraulic retarder |
| CN106402207B (en) * | 2016-09-27 | 2019-09-10 | 北京理工大学 | The Retarder hydraulic control system that quick acting and braking moment accurately control |
| CN107472290A (en) * | 2017-08-10 | 2017-12-15 | 江苏今创车辆有限公司 | The control system of hydraulic braking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: INNER MONGOLIA FIRST MACHINERY GROUP CO., LTD. Free format text: FORMER OWNER: XIANGTAN ELECTRIC MANUFACTURING CO., LTD. Effective date: 20110128 Owner name: XIANGTAN ELECTRIC MANUFACTURING CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Su Yonggang Inventor after: Li Jun Inventor after: Zhou Liming Inventor after: Fan Yumin Inventor after: Lei Xiong Inventor after: Fu Xiaoxia Inventor before: Li Jun Inventor before: Fan Yumin Inventor before: Lei Xiong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI JUN FAN YUMIN LEI XIONG TO: SU YONGGANG LI JUN ZHOU LIMING FAN YUMIN LEI XIONG FU XIAOXIA Free format text: CORRECT: ADDRESS; FROM: 411101 NO.302, XIASHESI STREET, XIANGTAN CITY, HU'NAN PROVINCE TO: 147032 CHANGQIAN ROAD, BAOTOU CITY, INNER MONGOLIA |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110128 Address after: 147032 Inner Mongolia Baotou Factory Road Co-patentee after: Xiangtan Electric Manufacturing Co., Ltd. Patentee after: Inner Mongolia First Machinery Group Corp. Address before: 411101 Hunan Province, Xiangtan City, the Department of the next street, No. 302 Patentee before: Xiangtan Electric Manufacturing Co., Ltd. |
|
| 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: 20100203 Termination date: 20160518 |