CN2438632Y - Whole-hydraulic steering gear with hydro-cylinder damping function - Google Patents
Whole-hydraulic steering gear with hydro-cylinder damping function Download PDFInfo
- Publication number
- CN2438632Y CN2438632Y CN 00247500 CN00247500U CN2438632Y CN 2438632 Y CN2438632 Y CN 2438632Y CN 00247500 CN00247500 CN 00247500 CN 00247500 U CN00247500 U CN 00247500U CN 2438632 Y CN2438632 Y CN 2438632Y
- Authority
- CN
- China
- Prior art keywords
- damping
- spool
- valve pocket
- fluid port
- hydraulic fluid
- 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 fully hydraulic redirector with oil cylinder and damping function, which comprises a control rotary valve composed of a valve body, a valve cover and a valve core, and a metering device. The valve body is provided with an oil inlet port, a right steering oil port, a left steering oil port, and an oil return port; the valve cover is provided with a damping hole group, and a damping hole of the damping hole group is communicated with a ring groove on an excircle of the valve cover; the valve core is provided with a right damping groove and a left damping groove.
Description
The utility model relates to a kind of Hydraulic Elements that are used for the vehicle hydraulic power steering system.
The cycloid formula all-hydraulic steering gear of prior art comprises by valve body, control rotary valve and cycloid gauging device that valve pocket and spool constitute, when this deflector is used for large-sized articulated formula vehicle, for example large roller or loader etc., when beginning to turn to or stopping to turn to, can make the people significantly feel rocking of vehicle, its reason mainly is because the articulated vehicle center of gravity is higher, the oil cylinder of deflector does not have damping function, produce the cause of greater impact load when turning to, thereby it is bigger to cause Vehicular turn to impact, neither steady, cause sense of discomfort to the people, may cause the safety misadventure of the person and vehicle etc. again.
The purpose of this utility model provides a kind of band cylinder damping function, can reduce articulated vehicle and turn to impact, guarantees to turn to steady failure-free deflector.
The purpose of this utility model can realize by following measure: this deflector comprises control rotary valve and the gauging device that is made of valve body, valve pocket and spool, on valve body, be provided with oil inlet, right steering hydraulic fluid port, left steering hydraulic fluid port, return opening, valve pocket is provided with the damping hole group, the damping hole of damping hole group is connected with annular groove on the valve pocket cylindrical, and right damping slot and left damping slot are arranged on the spool.
The purpose of this utility model also can realize by following measure: when deflector right-hand rotation certain angle scope, the right steering hydraulic fluid port communicates with back leakage groove on the spool by the right damping slot on the spool, the damping hole of damping hole group on the valve pocket on the valve pocket; When turning right than wide-angle, the right steering hydraulic fluid port on the valve pocket separates with the last right damping slot of spool; When deflector left-hand rotation certain angle scope, the left steering hydraulic fluid port on the valve pocket communicates with back leakage groove on the spool by the left damping slot on the spool, the damping hole of damping hole group on the valve pocket; When turning left than wide-angle, the left steering hydraulic fluid port on the valve pocket separates with left damping slot on the spool; When deflector was in the meta state, the right steering hydraulic fluid port on the valve pocket was corresponding with right damping slot on the spool, and the damping hole of the damping hole group on the valve pocket is corresponding with the back leakage groove on the spool, and the left steering hydraulic fluid port on the valve pocket is corresponding with left steering damping slot on the spool.
The utility model relates generally to spool and valve pocket, and valve pocket is provided with the damping hole group, and the damping holes all by the annular groove on the cylindrical interconnect.When deflector right-hand rotation certain angle scope, the right steering hydraulic fluid port is full of pressure oil on the valve pocket, communicates the direct oil return of a part of pressure oil with back leakage groove on the spool by the right damping slot on the spool, damping hole on the valve pocket; When turning right than wide-angle, the right steering hydraulic fluid port separates with right damping slot on the spool on the valve pocket, will not have pressure oil to enter back leakage groove on the spool.When deflector is turned left, has identical result.
The utility model is by the cylinder damping function, just draw the sub-fraction pressure oil, be communicated with the impact energy when sponging Vehicular turn with oil return through the damping orifice groove on spool, the valve pocket from the oil cylinder working-pressure hydraulic fluid port, assurance turns to steadily, thereby greatly avoids the person and damaged vehicle.Particularly more important for some large-sized articulated formula vehicles, because the general center of gravity of these vehicles is higher, can produce bigger impact load when beginning or stopping to turn to.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that valve pocket of the present utility model, spool launch back relative position scheme drawing;
When Fig. 3 is the utility model left-hand rotation certain angle scope, the relative position scheme drawing of left and right damping slot of spool and valve pocket damping hole;
Fig. 4 is the utility model when turning left than wide-angle, the relative position scheme drawing of left and right damping slot of spool and valve pocket damping hole;
When Fig. 5 is the utility model right-hand rotation certain angle scope, the relative position scheme drawing of left and right damping slot of spool and valve pocket damping hole;
Fig. 6 is the utility model when turning right than wide-angle, the relative position scheme drawing of left and right damping slot of spool and valve pocket damping hole;
Fig. 7 is the utility model when being in the meta state, the relative position scheme drawing of left and right damping slot of spool and valve pocket damping hole.
When deflector left-hand rotation or right-hand rotation, spool has certain relative rotation with respect to valve pocket, so move expression left-hand rotation or right-hand rotation at expansion scheme drawing upper valve sleeve, spool relative position.
The utility model will be further described with reference to the accompanying drawings:
Deflector of the present utility model comprises control rotary valve 15 and the gauging device 14 that valve body 3, valve pocket 2 and spool 1 constitute, on valve body 3, be provided with oil inlet 10, right steering hydraulic fluid port 11, left steering hydraulic fluid port 12, return opening 13, valve pocket 2 is provided with damping hole group 5, interconnects by the 9 all damping holes of the annular groove on valve pocket 2 cylindricals.When deflector is in the meta state, right steering hydraulic fluid port 16 on the valve pocket 2 is corresponding with right damping slot 4 on the spool 1, the damping hole of the damping hole group 5 on the valve pocket 2 is corresponding with back leakage groove 6 on the spool 1, and the left steering hydraulic fluid port 7 on the valve pocket 2 is corresponding with left damping slot 8 on the spool 1.When deflector right-hand rotation certain angle scope, the right steering hydraulic fluid port 16 on the valve pocket 2 is full of pressure oil, communicates the direct oil return of a part of pressure oil by the right damping slot 4 on the spool 1, the damping hole of damping hole group 5 on the valve pocket 2 with back leakage groove 6 on the spool 1; When turning right than wide-angle, the right steering hydraulic fluid port 16 on the valve pocket 2 separates with right damping slot 4 on the spool 1, will not have pressure oil to enter back leakage groove 6 on the spool 1.When deflector left-hand rotation certain angle scope, the left steering hydraulic fluid port 7 on the valve pocket 2 is full of pressure oil, communicates the direct oil return of a part of pressure oil by the left damping slot 8 on the spool 1, the damping hole of damping hole group 5 on the valve pocket 2 with back leakage groove 6 on the spool 1; When turning left than wide-angle, the left steering hydraulic fluid port 7 on the valve pocket 2 separates with left damping slot 8 on the spool 1, will not have pressure oil to enter back leakage groove 6 on the spool 1.Other links are joined oily mode with the prior art deflector.
Claims (2)
1, a kind of all-hydraulic steering gear with the cylinder damping function, this deflector comprises control rotary valve (15) and the gauging device (14) that is made of valve body (3), valve pocket (2) and spool (1), on valve body (3), be provided with oil inlet (10), right steering hydraulic fluid port (11), left steering hydraulic fluid port (12), return opening (13), it is characterized in that valve pocket (2) is provided with damping hole group (5), the damping hole of damping hole group (5) is connected with annular groove (9) on valve pocket (2) cylindrical, and right damping slot (4) and left damping slot (8) are arranged on the spool (1).
2, a kind of all-hydraulic steering gear according to claim 1 with the cylinder damping function, it is characterized in that when deflector right-hand rotation certain angle scope valve pocket (2) is gone up right steering hydraulic fluid port (16) and communicated with back leakage groove (6) on the spool (1) by the right damping slot (4) on the spool (1), the damping hole of damping hole group (5) on the valve pocket (2); When turning right than wide-angle, the right steering hydraulic fluid port (16) on the valve pocket (2) separates with right damping slot (4) on the spool (1); When deflector left-hand rotation certain angle scope, the left steering hydraulic fluid port (7) on the valve pocket (2) communicates with back leakage groove (6) on the spool (1) by the left damping slot (8) on the spool (1), the damping hole of damping hole group (5) on the valve pocket (2); When turning left than wide-angle, the left steering hydraulic fluid port (7) on the valve pocket (2) separates with left damping slot (8) on the spool (1); When deflector is in the meta state, right steering hydraulic fluid port (16) on the valve pocket (2) is corresponding with right damping slot (4) on the spool (1), the damping hole of the damping hole group (5) on the valve pocket (2) is corresponding with back leakage groove (6) on the spool (1), and the left steering hydraulic fluid port (7) on the valve pocket (2) is corresponding with left damping slot (8) on the spool (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00247500 CN2438632Y (en) | 2000-09-01 | 2000-09-01 | Whole-hydraulic steering gear with hydro-cylinder damping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00247500 CN2438632Y (en) | 2000-09-01 | 2000-09-01 | Whole-hydraulic steering gear with hydro-cylinder damping function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2438632Y true CN2438632Y (en) | 2001-07-11 |
Family
ID=33606430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00247500 Expired - Fee Related CN2438632Y (en) | 2000-09-01 | 2000-09-01 | Whole-hydraulic steering gear with hydro-cylinder damping function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2438632Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361853C (en) * | 2004-05-21 | 2008-01-16 | 株式会社日立制作所 | Power steering device |
| CN105370653A (en) * | 2015-12-07 | 2016-03-02 | 苏州广硕精密电子有限公司 | Conversion valve of vibratory road roller |
-
2000
- 2000-09-01 CN CN 00247500 patent/CN2438632Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361853C (en) * | 2004-05-21 | 2008-01-16 | 株式会社日立制作所 | Power steering device |
| CN105370653A (en) * | 2015-12-07 | 2016-03-02 | 苏州广硕精密电子有限公司 | Conversion valve of vibratory road roller |
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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 |