CN2564437Y - Secondary damping flow controller for steering pump of car - Google Patents
Secondary damping flow controller for steering pump of car Download PDFInfo
- Publication number
- CN2564437Y CN2564437Y CN 02274795 CN02274795U CN2564437Y CN 2564437 Y CN2564437 Y CN 2564437Y CN 02274795 CN02274795 CN 02274795 CN 02274795 U CN02274795 U CN 02274795U CN 2564437 Y CN2564437 Y CN 2564437Y
- Authority
- CN
- China
- Prior art keywords
- flow
- steering pump
- car
- damping
- valve body
- 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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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Disclosed is a car steering pump secondary damping flow controller. A slide valve which divides a valve body into a left cavity and a right cavity is arranged in the valve body; the left end of the slide valve is contacted with a flow control spring; the right end of the slide valve is contacted with a gag lever post; a flow once control damping hole through with a load and a pore canal are also arranged in the valve body; and a fuel overflow orifice which can be opened or closed by the slide valve is arranged in the right cavity. The utility model is characterized in that a flow secondary control damping step which can be matched with the flow once control damping hole is arranged in the middle of the slide valve. The car steering pump secondary damping flow controller provides relative flow according to different rotate speeds for a car in drive, reducing the flow of a steering pump of a car driving at high speed, assuring that the operation of the car steering wheel is both flexible and reliable, at the same time, accurately controlling the initial point of flow change.
Description
Technical field the utility model relates to a kind of sedan steering pump secondary damping volume control device.The background technology car is when running at high speed, rotating speed is high, make the steering pump input shaft rotational speed can reach 7000 rev/mins, the fractional increments of sedan steering pump delivery is enough to make the car bearing circle unstable, be difficult for grasping, have potential safety hazard, so car needs the curve dropping characteristic with the steering pump flow, also have the angle of utilizing flow velocity and damping hole to realize what the sedan steering pump delivery descended in the prior art, but the decline initial point and the stable point of rating curve are wayward.The summary of the invention the purpose of this utility model is to overcome weak point in the prior art, and provide a kind of on the basis of a damping of steering pump flow, increase a damping again, make car when running at high speed, the flow of steering pump is lowered, the steering dish is promptly light flexibly, and is safe and reliable again.This sedan steering pump secondary damping volume control device, be provided with the guiding valve that valve body is divided into chamber, the left and right sides in the valve body, the left end of guiding valve contacts with the flow control spring, right-hand member can contact with position-limited lever, also be provided with the flow that communicates with load in the valve body and once control damping hole, with the duct that right chamber communicates, be provided with the fluid overflow weir that can be opened and closed by guiding valve in the right chamber, it is characterized in that the guiding valve middle part is provided with can once control the flow secondary control damping step that damping hole matches with flow.This sedan steering pump secondary damping volume control device for car under steam different rotating speeds corresponding flow is provided, car flow of steering pump in running at high speed is lowered, it is promptly light flexibly, safe and reliable again to guarantee to handle the car bearing circle, simultaneously, the accurate initial point that changes of dominant discharge.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is rating curve figure.
Fig. 3 now is further described the utility model in conjunction with the accompanying drawings for the guiding valve step and the valve body damping hole secondary damping enlarged drawing specific embodiment, with reference to Fig. 1, Fig. 2, be provided with the guiding valve 2 that valve body is divided into chamber, the left and right sides in the valve body 1, the left end of guiding valve contacts with flow control spring 3, right-hand member can contact with position-limited lever 4, flow is once controlled damping hole 5 and is communicated with load, and duct 6 communicates with right chamber, and right chamber also is provided with the fluid overflow weir (not showing among the figure) that can be opened and closed by guiding valve.When the rotation speed n of steering pump is lower than nk
1The time, the flow that steering pump produces is transported to load through damping hole 5 of inflow-rate of water turbine, and fluid 6 enters right chamber through the duct simultaneously.When the rotation speed n of steering pump is higher than nk
1The time, the right chamber of guiding valve raises because of the flow accumulated pressure, chamber, the guiding valve left and right sides forms pressure reduction, flow control spring force and left chamber oil liquid pressure that guiding valve overcomes left chamber move to left, open right chamber fluid overflow weir, a fluid part is once controlled damping hole through flow and is flowed to load, and another part has poured off through right chamber overflow weir, make guiding valve in new position balance, the rotating speed of steering pump is at nk at this moment
1-nk
2, the flow that flows to load is Q
KWith reference to Fig. 2, Fig. 3, when the rotation speed n of steering pump is higher than nk
2The time, the oil liquid pressure on guiding valve right side continues to raise, promoting guiding valve continues to move to left, when the initial point x of the flow secondary control damping step at guiding valve middle part and flow are once controlled the right hand edge z of damping hole when relative, be the initial point of flow secondary control damping, along with the rotating speed of steering pump constantly raises, guiding valve continues to move to left, the effect of secondary damping is constantly strengthened, the flow that flows to load constantly descends, and once controls damping hole right hand edge z when relative when the terminal point y of the flow secondary control damping step at guiding valve middle part and flow, and steering pump is in maximum damping state, promptly be in the stable point of flow secondary control damping this moment, the rotating speed of steering pump is nk
3, flow Q
KBe minimum.
Claims (1)
1, a kind of sedan steering pump secondary damping volume control device, be provided with the guiding valve that valve body is divided into chamber, the left and right sides in the valve body, the left end of guiding valve contacts with the flow control spring, right-hand member contacts with position-limited lever, also be provided with the flow that communicates with load in the valve body and once control damping hole, with the duct that right chamber communicates, be provided with the fluid overflow weir that can be opened and closed by guiding valve in the right chamber, it is characterized in that the middle part of guiding valve is provided with and can once controls the flow secondary control damping step that damping hole matches with flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274795 CN2564437Y (en) | 2002-08-14 | 2002-08-14 | Secondary damping flow controller for steering pump of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274795 CN2564437Y (en) | 2002-08-14 | 2002-08-14 | Secondary damping flow controller for steering pump of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2564437Y true CN2564437Y (en) | 2003-08-06 |
Family
ID=33738989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02274795 Expired - Fee Related CN2564437Y (en) | 2002-08-14 | 2002-08-14 | Secondary damping flow controller for steering pump of car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2564437Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364105A (en) * | 2011-11-16 | 2012-02-29 | 瑞立集团瑞安汽车零部件有限公司 | Steering pump with electromagnetic valve for controlling flow, and power steering pump flow control device and method for automobile |
| CN102442346A (en) * | 2011-09-21 | 2012-05-09 | 上海华普汽车有限公司 | Cam type assistance-adjustable hydraulic power-assisted steering system and control method thereof |
-
2002
- 2002-08-14 CN CN 02274795 patent/CN2564437Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442346A (en) * | 2011-09-21 | 2012-05-09 | 上海华普汽车有限公司 | Cam type assistance-adjustable hydraulic power-assisted steering system and control method thereof |
| CN102442346B (en) * | 2011-09-21 | 2013-09-25 | 上海华普汽车有限公司 | Cam type assistance-adjustable hydraulic power-assisted steering system and control method thereof |
| CN102364105A (en) * | 2011-11-16 | 2012-02-29 | 瑞立集团瑞安汽车零部件有限公司 | Steering pump with electromagnetic valve for controlling flow, and power steering pump flow control device and method for automobile |
| CN102364105B (en) * | 2011-11-16 | 2015-08-19 | 瑞立集团瑞安汽车零部件有限公司 | A kind of steering pump of electromagnetic valve flow, automobile power steering pump flow control device and method |
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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 |