CN2560535Y - Load-sensing hydraulic-steering priority valve - Google Patents
Load-sensing hydraulic-steering priority valve Download PDFInfo
- Publication number
- CN2560535Y CN2560535Y CN 02212247 CN02212247U CN2560535Y CN 2560535 Y CN2560535 Y CN 2560535Y CN 02212247 CN02212247 CN 02212247 CN 02212247 U CN02212247 U CN 02212247U CN 2560535 Y CN2560535 Y CN 2560535Y
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- CN
- China
- Prior art keywords
- oil
- port
- control valve
- gradient control
- pressure
- 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
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Abstract
The utility model provides a load-sensing full hydraulic steering priority valve which consists of a valve body and a valve core. The valve body is connected with an oil port plane of a redirector and is provided with a return opening, a left oil port, a right oil port, an oil inlet and an EF oil port that are shared with the redirector. An LS oil port on the valve body is communicated with an LS oil port on the redirector. The return opening, the left oil port, the right oil port, the oil inlet and the EF oil port are respectively connected with an oil return pipe, an oil tube at the left side of an oil cylinder, an oil tube at the right side of the oil cylinder, an oil inlet tube and an EF oil tube.
Description
Technical field
The utility model relates to the Hydraulic Elements of vehicle hydraulic power steering system, the pressure-gradient control valve in especially a kind of load sensing all hydraulic pressure steering-gear.
Background technology
At present, the load sensing all hydraulic pressure steering-gear generally is made up of load sensing all-hydraulic steering gear, pressure-gradient control valve, pump, oil cylinder etc.Load sensing all-hydraulic steering gear and pressure-gradient control valve all have oil return pipe, connect by two oil pipes between the two.Its weak point is easily to cause part to arrange inconvenience on complete machine, the buying expenses height, the easier various quality problems that do not match and produce owing to signal transmitting speed and error or two elements between deflector and the pressure-gradient control valve that cause of while, as steering swivel system heating, turn to heavy, steering procedure that idle travel etc. is arranged, in addition, deflector and pressure-gradient control valve are tested respectively, cause the waste of human and material resources and financial resources.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, and a kind of load sensing hydro-steering pressure-gradient control valve is provided.
The purpose of this utility model can realize by following measure:
This pressure-gradient control valve is made of valve body and spool, and valve body and deflector hydraulic fluid port plane link, and is provided with the return opening shared with deflector, left oil port, right oil port, oil inlet, EF hydraulic fluid port.
The purpose of this utility model also can realize by following measure:
LS hydraulic fluid port on the valve body is connected with LS hydraulic fluid port in the deflector; Return opening, left oil port, right oil port, oil inlet, EF hydraulic fluid port link to each other with left side oil pipe, the right side oil pipe of oil cylinder, oil inlet, the EF oil pipe of oil return pipe, oil cylinder respectively.
A kind of load sensing hydro-steering pressure-gradient control valve described in the utility model comprises Dynamic Signal type pressure-gradient control valve and stationary singnal type pressure-gradient control valve.
The valve body of pressure-gradient control valve described in the utility model and the valve body of deflector directly combine as a whole, when the load sensing all-hydraulic steering gear when meta (not steering wheel rotation), pressure-gradient control valve is passed through in the oil-feed of oil inlet, to other work systems, left oil port, the right oil port of pressure-gradient control valve do not have oil to the overwhelming majority from the EF hydraulic fluid port.When the load sensing all-hydraulic steering gear turned to (steering wheel rotation), the oil-feed of oil inlet guaranteed at first that by pressure-gradient control valve deflector turns to oil, and surplus oil arrives other work systems by the EF hydraulic fluid port again.At this moment oil inlet communicates with the oil inlet of deflector on the pressure-gradient control valve flange face, enter the oil of deflector, oil distribution mechanism, metering mechanism by deflector, arrive the left oil port or the right oil port of deflector, the left oil port of deflector or right oil port communicate with the left oil port or the right oil port of pressure-gradient control valve respectively, and hydraulic oil is by the left side or the right side of the left oil port or the right oil port arrival oil cylinder of pressure-gradient control valve.The oil return on oil cylinder left side or right side, left oil port or right oil port by pressure-gradient control valve arrive left oil port or the right oil port of dress to device, enter the inside of deflector, by the return opening oil return of deflector.The return opening of deflector communicates with the return opening of pressure-gradient control valve, and the oil return of deflector is got back to fuel tank by the return opening of pressure-gradient control valve, finishes a left side or right steering.
Description of drawings
Fig. 1 is the front view of the embodiment after the utility model and load sensing all-hydraulic steering gear link;
Fig. 2 is the birds-eye view of the utility model Fig. 1;
Fig. 3 is the scheme drawing of the utility model flange face;
Fig. 4 is link to each other with the utility model scheme drawing of face of load sensing all-hydraulic steering gear hydraulic fluid port.
The specific embodiment
This pressure-gradient control valve is made of valve body 17 and spool 4, valve body 17 directly connects by two bolts 18 with deflector hydraulic fluid port plane, there is flange the connection place, pressure-gradient control valve is provided with five hydraulic fluid ports shared with deflector, be return opening 8, left oil port 9, right oil port 10, oil inlet 15, EF hydraulic fluid port 16, link to each other with left side oil pipe, the right side oil pipe of oil cylinder, oil inlet, the EF oil pipe of oil return pipe, oil cylinder respectively.When the load sensing all-hydraulic steering gear when meta (not steering wheel rotation), the oil-feed of oil inlet 15 enters oil-feed annular groove 1, spool 4 moves to right, the oil-feed of oil-feed annular groove 1 is by spool 4, the overwhelming majority enters EF annular groove 3, to other work systems, left oil port 9, the right oil port 10 of pressure-gradient control valve do not have oil from EF hydraulic fluid port 16.When the load sensing all-hydraulic steering gear turns to (steering wheel rotation), hydraulic oil in the LS pipeline that deflector LS hydraulic fluid port 6 and pressure-gradient control valve LS hydraulic fluid port 5 are connected to form is given the pressure-gradient control valve give a signal, pressure-gradient control valve spool 4 moves to left, the oil-feed of pressure-gradient control valve enters oil-feed annular groove 1 by the oil inlet 15 of pressure-gradient control valve, at first by pressure-gradient control valve spool 4, enter CF annular groove 2, CF annular groove 2 communicates with oil inlet 7 on the pressure-gradient control valve flange face, turns to oil to guarantee deflector; Surplus oil enters EF annular groove 3 again by pressure-gradient control valve spool 4, from EF hydraulic fluid port 16 to other work systems.At this moment the oil inlet 7 of pressure-gradient control valve communicates with the oil inlet 11 of deflector, hydraulic oil enters the oil inlet 11 of deflector by pressure-gradient control valve, arrival deflector inside, oil distribution mechanism, metering mechanism by deflector again, arrive the left oil port 13 or the right oil port 14 of deflector, the left oil port 13 of deflector or right oil port 14 communicate with the left oil port 9 or the right oil port 10 of pressure-gradient control valve respectively, and hydraulic oil is by the left side or the right side of the left oil port 9 or the right oil port 10 arrival oil cylinders of pressure-gradient control valve.The oil return in oil cylinder right side or right left side, right oil port 10 or left oil port 9 by pressure-gradient control valve arrive right oil port 14 or the left oil port 13 of dress to device, enter the inside of deflector, by return opening 12 oil returns of deflector.The return opening 12 of deflector communicates with the return opening 8 of pressure-gradient control valve, and the oil return of deflector is got back to fuel tank by the return opening 8 of pressure-gradient control valve, finishes a left side or right steering.
Claims (3)
1, a kind of load sensing hydro-steering pressure-gradient control valve, constitute by valve body (17) and spool (4), it is characterized in that valve body (17) and deflector hydraulic fluid port plane link, and be provided with the return opening shared (8), left oil port (9), right oil port (10), oil inlet (15), EF hydraulic fluid port (16) with deflector.
2, a kind of load sensing hydro-steering pressure-gradient control valve according to claim 1 is characterized in that the LS hydraulic fluid port (5) on the valve body (17) is connected with LS hydraulic fluid port (6) in the deflector.
3, a kind of load sensing hydro-steering pressure-gradient control valve according to claim 1 is characterized in that return opening (8), left oil port (9), right oil port (10), oil inlet (15), EF hydraulic fluid port (16) link to each other with left side oil pipe, the right side oil pipe of oil cylinder, oil inlet, the EF oil pipe of oil return pipe, oil cylinder respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212247 CN2560535Y (en) | 2002-01-18 | 2002-01-18 | Load-sensing hydraulic-steering priority valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212247 CN2560535Y (en) | 2002-01-18 | 2002-01-18 | Load-sensing hydraulic-steering priority valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560535Y true CN2560535Y (en) | 2003-07-16 |
Family
ID=33691949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212247 Expired - Fee Related CN2560535Y (en) | 2002-01-18 | 2002-01-18 | Load-sensing hydraulic-steering priority valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2560535Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862031B (en) * | 2005-05-09 | 2010-09-29 | 伊顿公司 | Anti jerk valve |
| CN108100033A (en) * | 2018-01-10 | 2018-06-01 | 西安合众思壮导航技术有限公司 | Turn to fluid distributor |
-
2002
- 2002-01-18 CN CN 02212247 patent/CN2560535Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862031B (en) * | 2005-05-09 | 2010-09-29 | 伊顿公司 | Anti jerk valve |
| CN108100033A (en) * | 2018-01-10 | 2018-06-01 | 西安合众思壮导航技术有限公司 | Turn to fluid distributor |
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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 |