CN201133503Y - Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve - Google Patents
Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve Download PDFInfo
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- CN201133503Y CN201133503Y CNU2007203003952U CN200720300395U CN201133503Y CN 201133503 Y CN201133503 Y CN 201133503Y CN U2007203003952 U CNU2007203003952 U CN U2007203003952U CN 200720300395 U CN200720300395 U CN 200720300395U CN 201133503 Y CN201133503 Y CN 201133503Y
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Abstract
The utility model relates to an overflow pressure stabilizing valve, in particular to a novel plug-in type overflow pressure stabilizing valve of an automobile hydraulic power steering pump, which consists of a pump, a main valve, an adjusting nut, a pilot spring, a pilot valve, a pilot valve core, a main spring, a main valve core and an oil pipe connector. The overflow valve of the steering pump is made into an integral plug-in type structure with direct piloting function; the main valve, the main spring, the pilot valve, the pilot valve core, the pilot spring and the adjusting nut are pre-installed out of the die cavity hole of the pump and directly plugged into the die cavity hole of a shell after the pressure and the flow are debugged before being assembled, which solves the problems that the overflow pressure stabilizing effect is debugged after the prior overflow pressure stabilizing valves are assembled, so the valve core needs to be removed from the valve hole of the valve to re-adjust parts in case of any deviation, so that assembly effect is reduced and the difficulty in machining, drilling and cutting pilot small deep holes is high, the production cost is reduced, saves materials and the reliability of the automobile power steering pump is improved.
Description
Technical field:
The utility model relates to a kind of overflow pressure maintaining valve, particularly a kind of novel plug-in type overflow pressure maintaining valve of automobile hydraulic electric power steering pump.
Background technique:
The overflow pressure maintaining valve of traditional automobile hydraulic electric power steering pump generally all is to adopt the split pilot operated compound relief valve, because its structural reason and performance demands, generally guide's bypass design on housing, guide's spool is packed into cooperate the common effect that realizes overflow in back in the valve opening of guide's valve body again.Such structure is given and is made and assemble and bring very big difficulty, the one, by the pump performance requirement, must after assembling, debug the overflow voltage regulation result again, in case deviation occurs then spool will be split out redistribution part in back in the valve opening of valve body, till qualified, cause efficiency of assembling to reduce.The 2nd, the valve opening requirement on machining accuracy height of valve body, difficulty of processing is big, and the whole part manufacturing procedure is long, the cost height, efficient is low.The 3rd, owing to must design guide's bypass, not only the deep hole processing difficulty of guide's bypass is big, and make housing overall structure size become big, cause the volume of automobile assisted power steering pump to become big, not only cause the waste of material, it produces casting defect and leakage of oil causes the dangerous of motor turning also to cause wall thickness to add ambassador easily.
Summary of the invention:
The purpose of this utility model is: provide a kind of need be on the housing of pump machining guide oil circuit, solved the machining difficult problem of aperture gun drilling.The relief valve of steering pump is made into the integral plugged formula structure with immediate predecessor effect, after relief valve can be before assembling be debugged pressure and flow; Directly insert in the die cavity of housing again, the requirement on machining accuracy of die cavity is reduced greatly, improved the processing work efficiency, reduced cost of production, make the overall structure size decreases of steering pump, save material, the casting defect that minimizing may occur has improved the novel plug-in type overflow pressure maintaining valve of automobile hydraulic electric power steering pump of the reliability of automobile assisted power steering pump.
The utility model is to realize above-mentioned purpose by the following technical solutions:
The novel plug-in type overflow pressure maintaining valve of this automobile hydraulic electric power steering pump is made of the pump housing, main valve body, adjustment nut, guide's spring, guide's valve body, guide's spool, main spring, main valve plug and oil connection, be shaped on power hydraulic fluid port and return opening on the pump housing, and the die cavity hole of the valve body of packing into, power hydraulic fluid port and return opening communicate with the die cavity hole, in the outlet in die cavity hole oil connection are housed; It is characterized in that: above the oil connection in the die cavity hole on the pump housing main valve body is housed, main valve plug, main spring, guide's valve body, guide's spool, guide's spring is housed in the main valve body from bottom to up successively and adjusts nut; Be shaped on the main spring fixed hole in the main valve plug, the bottom is shaped on filler opening, in the main spring fixed hole main spring is housed; Be shaped on guide's spring fixed hole in guide's valve body, the bottom is shaped on the decompression hydraulic fluid port, and guide's spool and guide's spring are housed in guide's spring fixed hole.The shoulder hole that the endoporus of main valve body diminishes gradually for diameter from top to bottom.Be shaped on guide's hydraulic fluid port and guide's return opening on the sidewall of main valve body.
The utility model compared with prior art has following beneficial effect:
The novel plug-in type overflow pressure maintaining valve of this automobile hydraulic electric power steering pump is owing to adopted the relief valve with steering pump to be made into the integral plugged formula structure with immediate predecessor effect, with main valve plug, main spring, guide's valve body, guide's spool, guide's spring and adjust nut and outside the die cavity hole of the pump housing, install in advance, after before assembling, pressure and flow being debugged; Directly insert again in the die cavity hole of housing, solve existing overflow pressure maintaining valve and must after assembling, debug the overflow voltage regulation result again, in case deviation occurs then spool will be split out redistribution part in back in the valve opening of valve body, efficiency of assembling reduces, and the big problem of machining drilling guide small deep hole difficulty.The requirement on machining accuracy in pump housing die cavity hole is reduced greatly, improved the processing work efficiency, reduced cost of production, make the overall structure size decreases of steering pump, save material, the casting defect that minimizing may occur has improved the reliability of automobile assisted power steering pump.
Description of drawings:
Accompanying drawing is a kind of structural representation of novel plug-in type overflow pressure maintaining valve of automobile hydraulic electric power steering pump.
Among the figure: 1, the pump housing, 2, main valve body, 3, adjust nut, 4, guide's spring, 5, guide's valve body, 6, guide's spool, 7, main spring, 8, main valve plug, 9, oil connection, 10, the die cavity hole, 11, oil outlet, 12, the power hydraulic fluid port, 13, return opening, 14, guide's hydraulic fluid port, 15, guide's return opening, 16, the decompression hydraulic fluid port, 17, main spring fixed hole, 18, guide's spring fixed hole, 19, filler opening.
Embodiment:
The novel plug-in type overflow pressure maintaining valve of this automobile hydraulic electric power steering pump constitutes (referring to accompanying drawing) by the pump housing 1, main valve body 2, adjustment nut 3, guide's spring 4, guide's valve body 5, guide's spool 6, main spring 7, main valve plug 8 and oil connection 9.Be shaped on power hydraulic fluid port 12 and return opening 13 on the pump housing 1, and the die cavity hole 10 of the valve body of packing into, power hydraulic fluid port 12 and return opening 13 communicate with die cavity hole 10, and oil connection 9 is housed in the outlet in die cavity hole 10, and the oil outlet 11 of oil connection 9 is connected with the pressure oil pipe of automobile hydraulic electric power steering pump.Above the oil connection 9 in the die cavity hole 10 on the pump housing 1 main valve body 2 is housed, main valve plug 8, main spring 7, guide's valve body 5, guide's spool 6, guide's spring 4 is housed in the main valve body 2 from bottom to up successively and adjusts nut 3; Be shaped on main spring fixed hole 17 in the main valve plug 8, main spring 7 is housed in the main spring fixed hole 17, the bottom of main spring fixed hole 17 is shaped on filler opening 19.Be shaped on guide's spring fixed hole 18 in guide's valve body 5, guide's spool 6 and guide's spring 4 are housed in guide's spring fixed hole 18, the bottom of guide's spring fixed hole 18 is shaped on decompression hydraulic fluid port 16.The endoporus of main valve body 2 is the shoulder hole that diminishes gradually of diameter from top to bottom.Be shaped on guide's hydraulic fluid port 14 and guide's return opening 15 on the sidewall of main valve body 2.
During installation, earlier main valve plug 8, main spring 7, guide's valve body 5, guide's spool 6 and guide's spring 4 are packed in the shoulder hole of main valve body 2 by order from top to bottom, to adjust nut 3 again loads onto, then it is carried out reinstalling in the die cavity hole 10 of the pump housing 1 after the test adjustment of overflow voltage regulation result on test bench, will get final product in the oil connection 9 embedded type lumen pores 10 at last.This overflow pressure maintaining valve has been exempted the mach difficulty of processing of elongated aperture owing to the guide's bypass structure that has removed on the pump housing 1, has reduced the difficulty of processing of the pump housing 1.And the debugging of overflow voltage stabilizing can finish outside die cavity hole 10, overcome and debugged voltage regulation result again after existing overflow pressure maintaining valve must assemble, and the problem that efficiency of assembling is low reduces the requirement on machining accuracy in the die cavity hole 10 of the pump housing 1 greatly, has improved the processing work efficiency.
The working principle of the novel plug-in type overflow pressure maintaining valve of this automobile hydraulic electric power steering pump is as follows:
When the pressure stability of the pressure oil of automobile hydraulic electric power steering pump was constant, pressure oil was entered the pressure oil pipe of automobile hydraulic electric power steering pump through the oil outlet 11 of oil connection 9 by power hydraulic fluid port 12.
Pressure transient when the pressure oil of automobile hydraulic electric power steering pump, during overpressure, the major part of pressure oil is flowed out by the oil outlet 11 of power hydraulic fluid port 12 through oil connection 9, another part is then entered between the main spring fixed hole 17 and main valve plug 8 and guide's valve body 5 of main valve plug 8 by filler opening 19, and pass through decompression hydraulic fluid port 16 with 4 compressions of guide's spring, guide's spool 6 is opened, and pressure oil then enters the pressure stability that return opening 13 makes pressure oil by decompression hydraulic fluid port 16, guide's spring fixed hole 18 and guide's return opening 15.When the pressure of pressure oil continues to raise, because the oil pressure area of guide's valve body 5 is bigger than the oil pressure area of main valve plug 8, and make and move on guide's valve body 5, main spring 7 is unclamped, main valve plug 8 moves under the effect of oil pressure, the passage of guide's hydraulic fluid port 14 is opened, and pressure oil just enters return opening 13 through guide's hydraulic fluid port 14 and makes the pressure stability of pressure oil.
After the pressure of pressure oil descends, close under guide's spool 6 effect of guided missile spring 4 formerly, guide's valve body 5 also descends thereupon, because the endoporus of main valve body 2 is a shoulder hole, guide's valve body is positioned after dropping to certain position, makes guide's valve body roll back original position 5 times, and by main spring 7 main valve plug 8 is pushed back original position, and, then finish the work of overflow voltage stabilizing with the pathway closure of guide's hydraulic fluid port 14.When oil pressure raises once more, repeat above-mentioned working procedure again, like this, it is stable to reach the oil pressure that steering pump is exported.
Claims (3)
1, a kind of novel plug-in type overflow pressure maintaining valve of automobile hydraulic electric power steering pump, it is made of the pump housing (1), main valve body (2), adjustment nut (3), guide's spring (4), guide's valve body (5), guide's spool (6), main spring (7), main valve plug (8) and oil connection (9), be shaped on power hydraulic fluid port (12) and return opening (13) on the pump housing (1), and the die cavity hole (10) of the valve body of packing into, power hydraulic fluid port (12) and return opening (13) communicate with die cavity hole (10), and oil connection (9) is housed in the outlet of die cavity hole (10); It is characterized in that: above the oil connection (9) in the die cavity hole (10) on the described pump housing (1) main valve body (2) is housed, main valve plug (8), main spring (7), guide's valve body (5), guide's spool (6), guide's spring (4) is housed in the main valve body (2) from bottom to up successively and adjusts nut (3); Be shaped on main spring fixed hole (17) in the main valve plug (8), the bottom is shaped on filler opening (19), main spring (7) is housed in the main spring fixed hole (17), be shaped on guide's spring fixed hole (18) in guide's valve body (5), the bottom is shaped on decompression hydraulic fluid port (16), and guide's spool (6) and guide's spring (4) are housed in guide's spring fixed hole (18).
2, the novel plug-in type overflow pressure maintaining valve of a kind of automobile hydraulic electric power steering pump according to claim 1 is characterized in that: the shoulder hole that the endoporus of described main valve body (2) diminishes gradually for diameter from top to bottom.
3, the novel plug-in type overflow pressure maintaining valve of a kind of automobile hydraulic electric power steering pump according to claim 1 is characterized in that: be shaped on guide's hydraulic fluid port (14) and guide's return opening (15) on the sidewall of described main valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203003952U CN201133503Y (en) | 2007-12-22 | 2007-12-22 | Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203003952U CN201133503Y (en) | 2007-12-22 | 2007-12-22 | Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133503Y true CN201133503Y (en) | 2008-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203003952U Expired - Fee Related CN201133503Y (en) | 2007-12-22 | 2007-12-22 | Automobile hydraulic power-assisted steering pump plug type overflow pressure-stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133503Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444637A (en) * | 2011-09-27 | 2012-05-09 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN102713381A (en) * | 2009-11-17 | 2012-10-03 | 罗伯特·博世有限公司 | Pilot-operated pressure control valve |
| CN102818046A (en) * | 2012-08-30 | 2012-12-12 | 三一重型装备有限公司 | Reducing valve, roadheader water system and roadheader |
| CN103758807A (en) * | 2014-01-10 | 2014-04-30 | 张思学 | Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve |
| CN105065359A (en) * | 2015-08-13 | 2015-11-18 | 山东常林机械集团股份有限公司 | Safety oil supplementing valve for multi-path valve |
| CN108953708A (en) * | 2018-09-21 | 2018-12-07 | 徐州工程学院 | A kind of simple thread cartridge second level precursor overflow valve |
-
2007
- 2007-12-22 CN CNU2007203003952U patent/CN201133503Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713381A (en) * | 2009-11-17 | 2012-10-03 | 罗伯特·博世有限公司 | Pilot-operated pressure control valve |
| CN102713381B (en) * | 2009-11-17 | 2014-07-02 | 罗伯特·博世有限公司 | Pilot-operated pressure control valve |
| CN102444637A (en) * | 2011-09-27 | 2012-05-09 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN102444637B (en) * | 2011-09-27 | 2014-06-18 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN102818046A (en) * | 2012-08-30 | 2012-12-12 | 三一重型装备有限公司 | Reducing valve, roadheader water system and roadheader |
| CN103758807A (en) * | 2014-01-10 | 2014-04-30 | 张思学 | Automobile differential constant-current steering booster pump or threaded differential relief cartridge valve |
| CN105065359A (en) * | 2015-08-13 | 2015-11-18 | 山东常林机械集团股份有限公司 | Safety oil supplementing valve for multi-path valve |
| CN108953708A (en) * | 2018-09-21 | 2018-12-07 | 徐州工程学院 | A kind of simple thread cartridge second level precursor overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20111222 |