CN102705231A - Double-rotation-direction steering pump for automobile emergency steering system - Google Patents
Double-rotation-direction steering pump for automobile emergency steering system Download PDFInfo
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- CN102705231A CN102705231A CN2012101763542A CN201210176354A CN102705231A CN 102705231 A CN102705231 A CN 102705231A CN 2012101763542 A CN2012101763542 A CN 2012101763542A CN 201210176354 A CN201210176354 A CN 201210176354A CN 102705231 A CN102705231 A CN 102705231A
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Abstract
The invention relates to a double-rotation-direction steering pump for an automobile emergency steering system. The pump comprises a front pump body, a middle pump body and a rear pump body which are connected in sequence through an eccentric speed reduction mechanism, wherein an oil inlet is formed on the rear pump body; a plurality of radial holes are formed in the middle pump body; a plunger is arranged in each radial hole to form an oil pumping subsystem; the bottom of each plunger is matched with the eccentric excircle of the eccentric speed reduction mechanism; a plunger spring is arranged in an inner hole of each plunger; a plug is arranged at the end of each radial hole to seal each plunger and each plunger spring in the hole; the outlet of each oil pumping subsystem is formed on the end face of the middle pump body; an oil sealing sheet is arranged at the outlet on the end face; the oil sealing sheet and a disc spring are arranged in an annular groove on the end face of the rear pump body in a matched mode; and the annular groove is communicated with an oil outlet formed on the rear pump body. The pump can normally work at the rotation speed of 100r/min and does not have any requirement on the rotation directions, and the traditional flow valve is eliminated, so that high rotation speed and stable flow are realized, the pump and a special valve form a new hydraulic steering system, and the safety protection of the hydraulic steering system is realized.
Description
Technical field
The invention belongs to hydraulic steering system, relate to the car emergency steering system, be specifically related to a kind of double rotational directions steering pump that is used for the car emergency steering system.
Background technique
Along with developing of automobile industry, the increase of carload quality, existing hydraulic steering system can satisfy GB17675 standard and the standard EN 71/311/EEC of European Union under normal operation; But under system durability decline or failure conditions, motor turning was lost efficacy, and did not meet above-mentioned standard-required; And security incident very easily takes place, and in the case, emergent steering system is used and is given birth to; In this system, need a kind of steering pump, can under situation about damaging, guarantee the steering system proper functioning; Be automobile gearbox or transfer case owing to oil pump adds holding position simultaneously, so oil pump must satisfy the clockwise and anticlockwise needs to the rotation direction no requirement (NR); I.e. requirement can be supported the double rotational directions fuel feeding, and so on radial plunger pump, using many flow-distributing valve structural type at present has ball valve, cone valve, poppet valve, and these structures exist local pressure loss big; One-way valve is opened the shortcoming that lags behind, and can not satisfy the demands.
Summary of the invention
In order to overcome the deficiency of above-mentioned existing technology, the object of the present invention is to provide a kind of double rotational directions steering pump that is used for the car emergency steering system, constitute new hydraulic steering system, realize the hydraulic steering system safety protection, thereby prolong lifetime of system.
To achieve these goals, the technological scheme of the present invention's employing is:
A kind of double rotational directions steering pump that is used for the car emergency steering system; Comprise the preceding pump housing 10, middle pump body 7 and the back pump housing 16 that connect successively with eccentric reducing gear; The filler opening 20 that is communicated to eccentric reducing gear is set on the back pump housing 16, a plurality of radial holes 17 are arranged on the said middle pump body 7, a plunger 6 is set respectively in each radial hole 17 forms the pump oil subsystem; Plunger 6 bottoms cooperate with the eccentric excircle of eccentric reducing gear; Piston spring 4 is set in the endoporus of plunger 6, and plug 5 is arranged on radial hole 17 ends with in plunger 6 and the piston spring 4 inclosure holes, and the outlet of said pump oil subsystem is arranged on the end face of middle pump body 7 and in end face upper outlet position oil seal piece 2 is set; Oil seal piece 2 cooperates with belleville spring 1 in the circular groove 18 that is assemblied in the back pump housing 16 end faces, and circular groove 18 is communicated with oil outlet 19 on being arranged on the back pump housing 16.
Said eccentric reducing gear comprises eccentric shaft 8, assembling lining 13 on the eccentric excircle of eccentric shaft 8, and lining 13 outer assembling external axle sleeves 14, said external axle sleeve 14 cooperates with middle pump body 7 and plunger 6.
Said eccentric shaft 8 contacts an end with the back pump housing 16 step shaft shoulder face place is provided with back pad 3, and back pad 3 one end faces and eccentric shaft 8 shoulder faces are fitted, and fits with the back pump housing 16 end faces in the other end.
In the pump housing 10 oil sealing 12 is set before said, the endoporus of oil sealing 12 cooperates with eccentric shaft 8, and cylindrical cooperates with the preceding pump housing 10, and eccentric shaft 8 axle head step places assembling front pad 11 supports fore bearing 9, and fore bearing 9 is socketed in the axle head of eccentric shaft 8, the pump housing 10 before being positioned at.
On eccentric circle two side shafts of said eccentric shaft 8 rear bearing 15 is set respectively, rear bearing 15 cooperates with the preceding pump housing 10 and the back pump housing 16 respectively.
On the cross section that the eccentric excircle of said filler opening 20 and eccentric shaft 8 intersects thin-walled aperture 21 is set, forms logical oily one-way valve.
The present invention compared with prior art has following advantage:
1) slow-speed of revolution, existing steerig pump require to turn to the rotating speed must be greater than 500r/min, and this product adopts plunger pump designing technique, can satisfy the needs of 100r/min proper functioning.
2), satisfy the two-way rotation needs of clockwise and anticlockwise to the rotation direction no requirement (NR).
3) cancellation conventional flow metered valve is realized high rotating speed stability of flow.
4) oil suction adopts variable cross section thin-walled aperture as logical oily one-way valve, and fuel-displaced employing belleville spring and oil seal piece are combined into the tray type structure one-way valve, has effectively solved the defective that the conventional structure one-way valve lags behind, and has saved the space, has simplified project organization.
In a word, emergent steering system can both guarantee that traveling vehicle possesses steering capability when any fault appears in motor and main steering system; Improve the steering behaviour under the steering behaviour of heavy vehicle, particularly overload condition, improve the working life of steerig pump simultaneously; Through checking; Vehicle of the same race assembles different steering system, and lifetime of system has improved more than 2 times.And double rotational directions steering pump of the present invention can be supported this kind steering capability.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is pump body structure schematic representation behind the present invention.
Fig. 3 is a middle pump body structural representation of the present invention.
Fig. 4 be among Fig. 1 A-A to the turnover oil circuit of B-B under view, eccentric shaft is rotated counterclockwise.
Fig. 5 be among Fig. 1 A-A to the turnover oil circuit of B-B under view, eccentric shaft turns clockwise.
Fig. 6 is used for the schematic representation of car emergency steering system for the present invention.
The implication of reference character among the figure:
1-spring; 2-oil seal piece; 3-back pad; 4-piston spring; 5-plug; 6-plunger; 7-middle pump body; 8-eccentric shaft; 9-fore bearing; 10-preceding the pump housing; 11-front pad; 12-oil sealing; The 13-lining; The 14-external axle sleeve; The 15-rear bearing; The pump housing behind the 16-; The 17-radial hole; The 18-circular groove; The 19-oil outlet; The 20-filler opening; 21-thin-walled aperture; 22-master's oil tank; The secondary oil tank of 23-; 24-steering pump of the present invention; 25-emergency valve; 26-steering box; 27-steering actuation cylinder; 28-main steering pump.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained further details.
As shown in Figure 1; A kind of concrete structure that is used for the double rotational directions steering pump of car emergency steering system for the present invention; Comprise the preceding pump housing 10, middle pump body 7 and the back pump housing 16 that connect successively; All through stretching out in the mider hole that dome is encased in middle pump body 7, three pump housings are formed the basic supporting structure of pump with bolt and tight for the wherein preceding pump housing 10 and the back pump housing 16.
As shown in Figure 2, be 16 structural representations of the pump housing behind the present invention, the one of which end has filler opening 20 and oil outlet 19, and the other end has circular groove 18, on the cross section that the eccentric excircle of filler opening 20 and eccentric shaft 8 intersects thin-walled aperture 21 is set, and forms logical oily one-way valve.
As shown in Figure 3, for middle pump body 7 structural representations of the present invention, eight radial holes 17 are arranged on it, eight pump oil subsystems of corresponding formation, four wherein adjacent radial holes 17 are on a vertical plane, and four radial holes 17 are on another vertical plane in addition.
Eccentric reducing gear comprises eccentric shaft 8, assembling lining 13 on the eccentric excircle of eccentric shaft 8, and lining 13 outer assembling external axle sleeves 14, the three forms eccentric reducing gear.In the preceding pump housing 10 oil sealing 12 is set, the endoporus of oil sealing 12 cooperates with eccentric shaft 8, and cylindrical cooperates with the preceding pump housing 10, and eccentric shaft 8 axle head step places assembling front pad 11 supports fore bearings 9, and fore bearing 9 is socketed in the axle head of eccentric shaft 8, the pump housing 10 before being positioned at; Eccentric shaft 8 contacts an end with the back pump housing 16 step shaft shoulder face place is provided with back pad 3, and back pad 3 one end faces and eccentric shaft 8 shoulder faces are fitted, and fits with the back pump housing 16 dome end faces in the other end; Simultaneously, on eccentric circle two side shafts of eccentric shaft 8 rear bearing 15 is set respectively, rear bearing 15 cooperates with the preceding pump housing 10 and the back pump housing 16 respectively, thereby realizes the cooperation that is connected of eccentric reducing gear and the front and back pump housing.
On the pump housing 16 of back, the filler opening 20 that is communicated to eccentric reducing gear is set, eight radial holes 17 are arranged on the middle pump body 7, four adjacent radial holes 17 are on a vertical plane, and four radial holes 17 are on another vertical plane in addition.A plunger 6 is set respectively in each radial hole 17 forms pump oil subsystem, eight pump oil subsystems of corresponding formation.
Plunger 6 bottoms cooperate with the eccentric excircle of eccentric reducing gear, and piston spring 4 is set in the endoporus of plunger 6, and plug 5 is arranged on middle pump body 7 radial hole ends with in plunger 6 and the piston spring 4 inclosure holes, supports plunger 6 and piston spring 4.External axle sleeve 14 on the eccentric shaft 8 cooperates with plunger 6, realizes the cooperation that is connected with middle pump body 7.The outlet of pump oil subsystem is arranged on the end face of middle pump body 7 and in end face upper outlet position oil seal piece 2 is set; Oil seal piece 2 cooperates with belleville spring 1 in the circular groove 18 that is assemblied in the back pump housing 16 end faces; Be combined into the tray type structure one-way valve; Circular groove 18 be arranged on the oil outlet 19 of back on the pump housing 16 and be communicated with, and on the cross section that the eccentric excircle of filler opening 20 and eccentric shaft 8 intersects thin-walled aperture 21 is set, form and lead to oily one-way valve.
For oil circuit turnover route of the present invention is: oil gets into the pump housing from filler opening 20, gets into the pump oil subsystem by thin-walled aperture 21 again, then discharges through circular groove 18 and oil outlet 19 from the outlet of pump oil subsystem.
As shown in Figure 4; When eccentric shaft 8 was rotated counterclockwise, plunger 6 is under the effect of eccentric shaft 8 eccentric excircles, and was as shown in Figure 3; Four plunger 6 sealed volume of eccentric shaft 8 eccentric excircle major diameters one side become big; Hydraulic oil is pressed into plunger 6 upper ends through oil seal piece 2 and belleville spring 1 under atmospheric pressure, in four plunger seal smaller volume of eccentric excircle minor diameter one side, fluid is forced out through oil seal piece 2 and belleville spring 1.
As shown in Figure 5; When eccentric shaft 8 turned clockwise, plunger 6 is under the effect of eccentric shaft 8 eccentric excircles, and was as shown in Figure 4; Four plunger 6 sealed volume of one side become big; Hydraulic oil is pressed into plunger 6 upper ends through oil seal piece 2 and belleville spring 1 under atmospheric pressure, in four plunger seal smaller volume of opposite side, fluid is forced out through oil seal piece 2 and belleville spring 1.
As shown in Figure 6; Emergencypump of the present invention is used for the car emergency steering system; Be used with the emergency valve of special use, this overall system comprises two oil tanks, and the fuel feeding of main oil tank 21 leads to the main pump filler opening of emergency valve 25 through main steering pump 28; Oil outlet through emergency valve 25 feeds steering box 26 and steering actuation cylinder 27 again, and part is returned main oil tank 21 formation loops.The fuel feeding of secondary oil tank 23 is through the filler opening 20 of steering pump 24 of the present invention, the emergencypump filler opening that oil outlet 19 feeds emergency valve 25 again, returns from the return opening of emergency valve 25 and forms the loop.
When system's proper functioning; Main steering pump 28 output fluid advance the main pump filler opening of emergency valve 25; Go out from the oil outlet of emergency valve 25, feed steering box 26 and steering actuation cylinder 27 back-up system work, steering pump 24 output fluid of the present invention advance the emergencypump filler opening of emergency valve 25; Go out from the return opening of emergency valve 25, return secondary oil tank 23.
When system emergency was worked, this moment, main steering pump 28 was the situation of breaking down, and the fluid of main steering pump 28 outputs is less; The less fluid of this part advances the main pump filler opening of emergency valve 25; Go out from the oil outlet of emergency valve 25, steering pump of the present invention 24 output fluid advance the emergencypump filler opening of emergency valve 25, go out from the oil outlet of emergency valve 25; Two steering pump fluid feed steering box 26 and steering actuation cylinder 27 back-up system work simultaneously, guarantee system's proper functioning.
Claims (8)
1. double rotational directions steering pump that is used for the car emergency steering system; Comprise the preceding pump housing (10), middle pump body (7) and the back pump housing (16) that connect successively with eccentric reducing gear; The back pump housing (16) is gone up the filler opening (20) that is communicated to eccentric reducing gear is set; It is characterized in that; A plurality of radial holes (17) are arranged on the said middle pump body (7); A plunger (6) is set respectively in each radial hole (17) forms the pump oil subsystem, plunger (6) bottom cooperates with the eccentric excircle of eccentric reducing gear, and piston spring (4) is set in the endoporus of plunger (6); Plug (5) is arranged on radial hole (17) end plunger (6) and piston spring (4) is enclosed in the hole; The outlet of said pump oil subsystem is arranged on the end face of middle pump body (7) and in end face upper outlet position oil seal piece (2) is set, and oil seal piece (2) cooperates with belleville spring (1) in the circular groove (18) that is assemblied in the back pump housing (16) end face, and circular groove (18) is communicated with oil outlet (19) on being arranged on the back pump housing (16).
2. double rotational directions steering pump according to claim 1; It is characterized in that; Said eccentric reducing gear comprises eccentric shaft (8); Assemble lining (13) on the eccentric excircle of eccentric shaft (8), the outer assembling of lining (13) external axle sleeve (14), said external axle sleeve (14) cooperates with middle pump body (7) and plunger (6).
3. double rotational directions steering pump according to claim 2; It is characterized in that; Said eccentric shaft (8) contacts an end with the back pump housing (16) step shaft shoulder face place is provided with back pad (3); Back pad (3) one end faces and eccentric shaft (8) shoulder face are fitted, and fit with the back pump housing (16) end face in the other end.
4. according to claim 2 or 3 described double rotational directions steering pumps; It is characterized in that in the said preceding pump housing (10) oil sealing (12) is set, the endoporus of oil sealing (12) cooperates with eccentric shaft (8); Cylindrical cooperates with the preceding pump housing (10); Eccentric shaft (8) axle head step place assembling front pad (11) supports fore bearing (9), and fore bearing (9) is socketed in the axle head of eccentric shaft (8), is positioned at the preceding pump housing (10).
5. according to claim 2 or 3 described double rotational directions steering pumps, it is characterized in that, on eccentric circle two side shafts of said eccentric shaft (8) rear bearing (15) is set respectively, rear bearing (15) cooperates with the preceding pump housing (10) and the back pump housing (16) respectively.
6. according to claim 2 or 3 described double rotational directions steering pumps, it is characterized in that, on the cross section that the eccentric excircle of said filler opening (20) and eccentric shaft (8) intersects thin-walled aperture (21) is set, form logical oily one-way valve.
7. according to claim 1 or 2 or 3 described double rotational directions steering pumps, it is characterized in that eight radial holes (17) are arranged on the said middle pump body (7), eight pump oil subsystems of corresponding formation.
8. double rotational directions steering pump according to claim 7 is characterized in that, said eight radial holes (17), adjacent four radial holes (17) are on a vertical plane, and four radial holes (17) are on another vertical plane in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210176354.2A CN102705231B (en) | 2012-05-31 | 2012-05-31 | Double-rotation-direction steering pump for automobile emergency steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210176354.2A CN102705231B (en) | 2012-05-31 | 2012-05-31 | Double-rotation-direction steering pump for automobile emergency steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705231A true CN102705231A (en) | 2012-10-03 |
| CN102705231B CN102705231B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210176354.2A Active CN102705231B (en) | 2012-05-31 | 2012-05-31 | Double-rotation-direction steering pump for automobile emergency steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102705231B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08232832A (en) * | 1995-02-28 | 1996-09-10 | Unisia Jecs Corp | Radial plunger pump |
| JPH09236079A (en) * | 1996-02-29 | 1997-09-09 | Unisia Jecs Corp | Radial plunger pump |
| JPH1018960A (en) * | 1996-07-01 | 1998-01-20 | Unisia Jecs Corp | Radial plunger pump |
| JP2000161249A (en) * | 1998-11-27 | 2000-06-13 | Kayaba Ind Co Ltd | Variable displacement type vane pump |
| CN2643028Y (en) * | 2003-09-09 | 2004-09-22 | 义乌市凯吉汽配有限公司 | Automobile steering oil pump |
| CN201027602Y (en) * | 2007-04-06 | 2008-02-27 | 卢堃 | Double-rotating direction bidirectional-variable radial ram pump |
-
2012
- 2012-05-31 CN CN201210176354.2A patent/CN102705231B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08232832A (en) * | 1995-02-28 | 1996-09-10 | Unisia Jecs Corp | Radial plunger pump |
| JPH09236079A (en) * | 1996-02-29 | 1997-09-09 | Unisia Jecs Corp | Radial plunger pump |
| JPH1018960A (en) * | 1996-07-01 | 1998-01-20 | Unisia Jecs Corp | Radial plunger pump |
| JP2000161249A (en) * | 1998-11-27 | 2000-06-13 | Kayaba Ind Co Ltd | Variable displacement type vane pump |
| CN2643028Y (en) * | 2003-09-09 | 2004-09-22 | 义乌市凯吉汽配有限公司 | Automobile steering oil pump |
| CN201027602Y (en) * | 2007-04-06 | 2008-02-27 | 卢堃 | Double-rotating direction bidirectional-variable radial ram pump |
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| Publication number | Publication date |
|---|---|
| CN102705231B (en) | 2014-09-03 |
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| C14 | Grant of patent or utility model | ||
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Owner name: QINCHUAN MACHINE TOOL GROUP CO., LTD. Free format text: FORMER NAME: QINCHUAN MACHINERY DEVELOPMENT CO LTD, SHAANXI PROV |
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| CP01 | Change in the name or title of a patent holder |
Address after: 721009, 22 Tan Tan Road, Shaanxi, Baoji Patentee after: Qin Chuan Machine Tool & Tool Group Co., Ltd. joint-stock company Address before: 721009, 22 Tan Tan Road, Shaanxi, Baoji Patentee before: Qinchuan Machinery Development Co., Ltd., Shaanxi Prov |