CN2900287Y - Oil path distribution valve for automobile power steering - Google Patents
Oil path distribution valve for automobile power steering Download PDFInfo
- Publication number
- CN2900287Y CN2900287Y CN 200620110535 CN200620110535U CN2900287Y CN 2900287 Y CN2900287 Y CN 2900287Y CN 200620110535 CN200620110535 CN 200620110535 CN 200620110535 U CN200620110535 U CN 200620110535U CN 2900287 Y CN2900287 Y CN 2900287Y
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- Prior art keywords
- oil
- valve
- power steering
- communicated
- valve body
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- Expired - Fee Related
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Abstract
The utility model applies for protecting an oil route distribution valve for automobile power steering, which comprises a valve body, a valve core arranged in the valve body, a single-way valve, a safety control valve, a spring, and a sealing piece. The valve core is processed with a ring groove on the external surface, and the valve body wall is opened with an oil route hole, which is communicated with the oil route inlet P1 of an oil pump driving the engine; the inner surface of the valve body is processed with two ring grooves, and the front one is communicated with the main oil returning channel to the oil outlet T. And the back ring groove is communicated with the oil route hole on the valve core on the one side and with an oil outlet A through a single-way valve on the other side. When the valve core moves forward or backward, the ring groove on the external surface of the valve core is communicated with the two ring grooves on the internal surface of the valve body alternatively, thus linking to the oil returning inlet T or power steering oil outlet A. The distribution valve is used in the double-oil pump oil supply steering system of heave automobiles. When the engine can not work normally, the oil in the driving oil pump of the transfer case flows to the power redirector automatically through the oil distribution valve, thus making the engine work normally again. The utility model can enhance the driving safety.
Description
Technical field
The utility model belongs to a kind of oil passage control valve, is specifically related to the control cock in the heavy motor vehicle hydraulic power steering system, to ensure heavy motor vehicle (heavy motor vehicle that doube bridge turns to) safety in the process of moving.
Background technology
Development along with China's heavy motor vehicle technology, the increase of bicycle load-carrying capacity, the heavy motor vehicle market demand that doube bridge turns to is very big, but this class vehicle in use, because the load of vehicle propons is big, when driving engine is flame-out suddenly, power steering oil pump can not be given the power steering fuel feeding, just turning to of vehicle lost efficacy like this, and vehicle just can not rest in safety zone by people's wish, to guarantee the safety of vehicle '.
Functional reliability in order to ensure hydraulic power steering system, some heavy motor vehicle has adopted freewheel in the actuating device of steering hydraulic pump, make steering hydraulic pump under normal circumstances be subjected to engine drive, and cross when low or flame-out at engine speed, break away from driving engine and be subjected at full speed that free-rolling car drives.This employing freewheel, because the free gear diameter is bigger, it is big that the whole erection structure takies car chassis bulk, is not easy to car load and arranges that employing is seldom arranged at present.
Summary of the invention
The purpose of this utility model is at the prior art above shortcomings, a kind of automobile power steering oil circuit distributing valve is provided, when adopting two pump fuel feed at the heavy truck power steering system, heavy motor vehicle (heavy motor vehicle that doube bridge turns to) engine off under motoring condition, during the power steering cisco unity malfunction, the oil stream that auxiliary gear box is driven oil pump automatically switches in the power steering by the oil circuit distributing valve, makes it normal operation, to improve vehicle safety.
The technical solution of the utility model is as follows:
A kind of automobile power steering oil circuit distributing valve includes valve body and is loaded on valve body interior spool, check valve, Safety control valve, spring and sealing member; On valve body, have engine drive oil pump oil circuit oil inlet P 1, auxiliary gear box driving oil pump oil inlet P 2 and oil return inlet T; At the spool periphery annular groove of having got on the bus, and have the oil circuit through hole on valve body wall, the oil circuit through hole is communicated with engine drive oil pump oil circuit oil inlet P 1; Inner headed face car at valve body has the twice annular groove accordingly, annular groove on the front is communicated with drainback passage, take back hydraulic fluid port T, be communicated with oil circuit through hole on the spool on the one hand by the annular groove at rear, be communicated with power steering oil outlet A by a check valve on the other hand, when spool moved forward or retreats, its spool annular groove outside was communicated with the twice annular groove of valve body inner headed face respectively, connects oil return inlet T or power steering oil outlet A respectively; Center spool has the release through hole, and spool is against by pull back spring on the valve gap of a check valve, and check valve place oil discharge passage then directly is communicated with power steering oil outlet A.
In addition, near power steering oil outlet A position one Safety control valve is being installed also, Safety control valve is connected oil return inlet T by discharge channel.
Also have, the liquid stream indicating device of being made up of spring, steel ball and binding post is installed in the fuel-displaced position of drainback passage, wherein steel ball is installed in the spring top, binding post is positioned at steel ball the place ahead, binding post and valve body utilize vehicle power to be provided with switching function, binding post is anodal, negative pole is overlapped on (valve body is mounted on the car body) on the car body, indicator lamp is serially connected between the positive and negative electrode, steel ball contacts with binding post under the effect of spring and oil return respectively or separates, form switch, steel ball is arranged on the operator's compartment indicator lamp when contacting with binding post bright, otherwise do not work.
This power steering is installed in the two pump fuel feed system of heavy truck power steering system with the oil circuit distributing valve, and oil stream is used for automaticallying switch.When the driving engine normal operation, the engine drive oil pump is by oil circuit distributing valve bio-occlusion direction machine fuel feeding, and another oil pump that is arranged on the automobile auxiliary gear box also flow back into fuel tank by the oil of oil circuit distributing valve; When driving engine hinders when not working for some reason, the oil pump that vehicle drives in inertia traveling on the auxiliary gear box continues fuel feeding stream, by the oil circuit distributing valve is instantaneous oily stream is switched in the power steering, makes the power steering normal operation, to guarantee that vehicle ' arrives safety zone, to improve vehicle safety.
The utlity model has simple in structurely, reliable operation helps improving the advantage of vehicle driving safety.
Description of drawings
Fig. 1: automobile power steering is configured in fundamental diagram in two oil pump hydraulic efficiency pressure systems with the oil circuit distributing valve
Fig. 2: automobile power steering oil circuit distributing valve P1, P2 be the oil supply structure scheme drawing simultaneously
Fig. 3: automobile power steering oil circuit distributing valve P1 stop control lever, P2 oil supply structure scheme drawing
The specific embodiment
Referring to Fig. 1, this automobile power steering is to be configured in two oil pump hydraulic efficiency pressure systems with the oil circuit distributing valve, in hydraulic efficiency pressure system, be provided with engine drive oil pump 2 and auxiliary gear box and drive oil pump 3, all from fuel tank 1, get oil respectively, wherein engine drive oil pump 2 is by engine drive, auxiliary gear box drives oil pump 3 and is driven by auxiliary gear box, their fuel feeding taps into oil circuit distributing valve 4 respectively, the oil outlet of oil circuit distributing valve 4 is connected with the oil circuit of deflector distributing valve 5 again, oil circuit distributing valve 4 also has oil return circuit, takes back fuel tank 1 through return opening.Quit work when the engine drive oil pump hinders for some reason, auxiliary gear box drives oil pump and provides oil stream by this oil circuit distributing valve from trend executive device (automobile power steering).
The structure of oil circuit distributing valve is wherein seen Fig. 2 and Fig. 3 (they have two kinds of fuel feeding states respectively): valve body 401 1 sides of oil circuit distributing valve have engine drive oil pump oil circuit oil inlet P 1, directly be communicated with the oil circuit through hole of opening on spool 407 body walls 405, the release through hole is arranged in the spool 407, front end is equipped with pull back spring 413, the front end of pull back spring 413 is against on the valve gap of a check valve 412,411 of the discharge channel at check valve 412 places directly are communicated with power steering oil outlet A, to lay down the back pressure of spool.Above valve body 401, have auxiliary gear box and drive oil pump oil inlet P 2, oil circuit directly leads to the annular groove 410 of spool periphery behind valve body 401, inner headed face car at valve body 401 has twice annular groove 408 and 414 accordingly, annular groove 414 on the front is communicated with drainback passage 415, take back hydraulic fluid port T, be communicated with oil circuit through hole 405 on the spool on the one hand by the annular groove 408 at rear, be communicated with power steering oil outlet A by a check valve 409 on the other hand, when spool 407 moves forward or retreats, the driving surface of its spool annular groove outside 410 is communicated with the twice annular groove 408 or 414 of valve body inner headed face respectively, connect oil return inlet T or power steering oil outlet A, see Fig. 2 or state shown in Figure 3.In addition, near power steering oil outlet A position one Safety control valve 406 is being installed, Safety control valve 406 connects oil return inlet T by another discharge channel.
The liquid stream indicating device of being made up of spring 404, steel ball 403 and binding post 402 is installed on the fuel-displaced position of drainback passage 415, wherein steel ball 403 is installed in spring 404 tops, binding post 402 is positioned at steel ball 403 the place aheads, binding post 402 is anodal, negative pole is overlapped on the car body, indicator lamp 416 is serially connected between the positive and negative electrode, steel ball 403 contacts with binding post 402 under the effect of spring 404 and oil return respectively or separates, binding post and valve body utilize vehicle power to be provided with switching function, and steel ball is arranged on the operator's compartment indicator lamp when contacting with binding post bright.
Below be the fuel feeding process of distributing valve:
One, referring to Fig. 2: when normal vehicle operation, drive all normal operation of oil pump by engine-driven engine drive oil pump and by the auxiliary gear box that auxiliary gear box drives, while fuel feeding oil supply path distribution valve, at this moment, the oil stream of engine drive oil pump enters from oil inlet P 1, opens check valve 409 by pressure and makes oil stream enter power steering by power steering oil outlet A; Promote spool 407 by difference of pressure simultaneously, make spool displacement, compression retracteding position spring 413 is opened another check valve 412.At this moment, the driving surface of spool annular groove outside 410 is communicated with the annular groove 414 of valve body inner headed face, and the oil of auxiliary gear box driving oil pump is flowed through, and oil inlet P 2 enters after annular groove 410 and 414 flows to drainback passage 415, and oil flow back into oil return inlet T, enters fuel tank; Oil return simultaneously promotes steel ball 403, and steel ball 403 is not contacted with binding post 402, and indicator lamp 416 does not work.
Two, referring to Fig. 3, vehicle in motion, if driving engine breaks down and does not work, the engine drive oil pump does not have the output of oil stream, pull back spring 413 pushes back the diagram initial position with spool 407, and the driving surface of spool annular groove outside 410 is communicated with the annular groove 408 at valve body inner headed face rear, and auxiliary gear box drives oil pump oil stream and opens check valve 409, oil stream enters power steering by power steering oil outlet A, makes the power steering normal operation.This moment, steel ball 403 returns contacted with binding post 402 owing to there is not oil return, and indicator lamp 416 is bright.
Three, under above-mentioned two kinds of mode of operations, (12～13Mpa) time, safety valve 406 is opened, and oil stream directly enters oil return inlet T by the discharge channel in the valve, flows to fuel tank when power steering oil outlet A pressure surpasses safety valve 406 setting values.
Claims (3)
1, automobile power steering oil circuit distributing valve is characterized in that: include valve body and be loaded on valve body interior spool, check valve, Safety control valve, spring and sealing member; On valve body, have engine drive oil pump oil circuit oil inlet P 1, auxiliary gear box driving oil pump oil inlet P 2 and oil return inlet T; At the spool periphery annular groove of having got on the bus, and have the oil circuit through hole on valve body wall, the oil circuit through hole is communicated with engine drive oil pump oil circuit oil inlet P 1; Inner headed face car at valve body has the twice annular groove accordingly, annular groove on the front is communicated with drainback passage, take back hydraulic fluid port T, be communicated with oil circuit through hole on the spool on the one hand by the annular groove at rear, be communicated with power steering oil outlet A by a check valve on the other hand, when spool moved forward or retreats, its spool annular groove outside was communicated with the twice annular groove of valve body inner headed face respectively, connects oil return inlet T or power steering oil outlet A respectively; Center spool has the release through hole, and spool is against by pull back spring on the valve gap of a check valve, and check valve place oil discharge passage then directly is communicated with power steering oil outlet A.
2, automobile power steering according to claim 1 oil circuit distributing valve is characterized in that: near power steering oil outlet A position one Safety control valve is being installed, Safety control valve is connected oil return inlet T by discharge channel.
3, automobile power steering according to claim 1 oil circuit distributing valve, it is characterized in that: the liquid stream indicating device of being made up of spring, steel ball, binding post and indicator lamp is installed in the fuel-displaced position of drainback passage, wherein steel ball is installed in the spring top, binding post is positioned at steel ball the place ahead, binding post is anodal, and negative pole is overlapped on the car body, and indicator lamp is serially connected between the positive and negative electrode, steel ball contacts with binding post under the effect of spring and oil return respectively or separates, and forms switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110535 CN2900287Y (en) | 2006-05-09 | 2006-05-09 | Oil path distribution valve for automobile power steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110535 CN2900287Y (en) | 2006-05-09 | 2006-05-09 | Oil path distribution valve for automobile power steering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2900287Y true CN2900287Y (en) | 2007-05-16 |
Family
ID=38084450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620110535 Expired - Fee Related CN2900287Y (en) | 2006-05-09 | 2006-05-09 | Oil path distribution valve for automobile power steering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2900287Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442347A (en) * | 2011-11-07 | 2012-05-09 | 沙市久隆汽车动力转向器有限公司 | Emergency valve for double-loop power-assisted steering device |
| CN102700603A (en) * | 2012-05-31 | 2012-10-03 | 陕西秦川机械发展股份有限公司 | Emergency two-circuit power steering system |
| CN102975767A (en) * | 2012-12-17 | 2013-03-20 | 沙市久隆汽车动力转向器有限公司 | Switching valve for double-circuit assisted steering gear |
| CN105840576A (en) * | 2016-05-18 | 2016-08-10 | 山东常林机械集团股份有限公司 | Electrically controlled reversing valve |
| CN108252977A (en) * | 2018-02-05 | 2018-07-06 | 陈艳艳 | A kind of oil path distribution valve for large-flow hydraulic system |
| CN111186483A (en) * | 2020-02-28 | 2020-05-22 | 山东交通学院 | Steering hydraulic pump suitable for heavy vehicle emergency working condition |
-
2006
- 2006-05-09 CN CN 200620110535 patent/CN2900287Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442347A (en) * | 2011-11-07 | 2012-05-09 | 沙市久隆汽车动力转向器有限公司 | Emergency valve for double-loop power-assisted steering device |
| CN102442347B (en) * | 2011-11-07 | 2012-12-05 | 沙市久隆汽车动力转向器有限公司 | Emergency valve for double-loop power-assisted steering device |
| CN102700603A (en) * | 2012-05-31 | 2012-10-03 | 陕西秦川机械发展股份有限公司 | Emergency two-circuit power steering system |
| CN102975767A (en) * | 2012-12-17 | 2013-03-20 | 沙市久隆汽车动力转向器有限公司 | Switching valve for double-circuit assisted steering gear |
| CN105840576A (en) * | 2016-05-18 | 2016-08-10 | 山东常林机械集团股份有限公司 | Electrically controlled reversing valve |
| CN108252977A (en) * | 2018-02-05 | 2018-07-06 | 陈艳艳 | A kind of oil path distribution valve for large-flow hydraulic system |
| CN111186483A (en) * | 2020-02-28 | 2020-05-22 | 山东交通学院 | Steering hydraulic pump suitable for heavy vehicle emergency working condition |
| CN111186483B (en) * | 2020-02-28 | 2022-02-01 | 山东交通学院 | Steering hydraulic pump suitable for heavy vehicle emergency working condition |
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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: CHONGQING JIANG TONG MACHINERY CO., LTD. Free format text: FORMER OWNER: CHONGQING DAJIANG INDUSTRY (GROUP) CO., LTD. Effective date: 20090828 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090828 Address after: Technical center, 107 headquarters building, fishing cave Town, Banan District, Chongqing, China: 401321 Patentee after: Chongqing Jiangtong Machinery Co., Ltd. Address before: Dajiang Industrial Park, fishing cave Town, Banan District, Chongqing, China: 401321 Patentee before: Chongqing Dajiang Industries (Group) Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING DAJIANG INDUSTRY CO., LTD. Free format text: FORMER OWNER: CHONGQING JIANGTONG MACHINERY CO., LTD. Effective date: 20100513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 401321 TECHNOLOGY CENTER, HEADQUARTERS BUILDING, NO.107, YUTONG TOWN, BANANDISTRICT, CHONGQING CITY. TO: 401321 DAJIANG INDUSTRIAL PARK, BANAN DISTRICT, CHONGQING CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100513 Address after: 401321 Dajiang Industrial Zone, Banan District, Chongqing Patentee after: Chongqing Dajiang Industrial Co., Ltd. Address before: 401321 technical center, 107 headquarters building, fishing cave Town, Banan District, Chongqing Patentee before: Chongqing Jiangtong Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 Termination date: 20150509 |
|
| EXPY | Termination of patent right or utility model |