CN101949385B - Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles - Google Patents
Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles Download PDFInfo
- Publication number
- CN101949385B CN101949385B CN2010102650472A CN201010265047A CN101949385B CN 101949385 B CN101949385 B CN 101949385B CN 2010102650472 A CN2010102650472 A CN 2010102650472A CN 201010265047 A CN201010265047 A CN 201010265047A CN 101949385 B CN101949385 B CN 101949385B
- Authority
- CN
- China
- Prior art keywords
- stator
- pump
- oil distribution
- rotor blade
- blade assembly
- 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.)
- Active
Links
Images
Landscapes
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention discloses a hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles, which comprises a pump body, a pump cover, a pump shaft, an intermediate oil distribution disc, a back oil distribution disc, a first stator rotor blade assembly, a second stator rotor blade assembly and a valve assembly, wherein the pump cover is provided with a front oil distribution disc structure; the pump cover, the first stator rotor blade assembly, the intermediate oil distribution disc, the second stator rotor blade assembly and the back oil distribution disc are sequentially connected in series and installed on the pump shaft, and then are installed in the pump body and form a cavity A and a cavity B between the pump body; the valve assembly comprises a flow channel hole C, two valve holes, a large valve body and a small valve body; the large valve body and the small valve body are respectively installed in the two valve holes; the flow channel hole C is communicated with the cavity A; and the bottoms of the two valve holes are both communicated with the cavity B. The invention adopts the structure with double stators and double valve bodies; when the areas of overflow ports are the same, the overflow discharge is reduced, the flow rate is naturally reduced; and compared with a single overflow port, the overflow heating value is greatly reduced, the oil temperature of the system is reduced, and the reliability and service life of the steering pump are improved.
Description
[technical field]
The present invention relates to automobile steering system and use the hydraulic power-assisted steering pump, relate in particular to the hydraulic power-assisted steering pump that adopts two stator double body structures.
[background technique]
Along with developing rapidly of Domestic Automotive Industry, the travelling comfort that people get up to the performance and the driving of automobile requires increasingly high.Recent years particularly, the load-carrying of bridge constructions before large-tonnage is two, mining and engineering is more and more with automobile demand is because the load-carrying of automobile increases; The moment that the driving vehicle front turns to constantly increases, and this just needs to strengthen the cylinder diameter of steering box, and the flow of demand will increase; Simultaneously two propons automobiles have increased servo-cylinder again; Also need increase certain flow, because the increasing of load-carrying, the pressure of system also will increase.Total require output flow and the pressure of steering pump when auto idle speed to strengthen to satisfy the demand that turns to; Because motor is considered energy-conservation and environmental protection; The idling of design is all lower; The rotating speed that is delivered to steering pump is just not high yet, and this moment demand flow have greatlyyer, have only increase to turn to pump delivery to meet the demands.Old structure steering pump has only a stator and flow control valve, just has following defective: (1) receives the restriction of stator space and design because discharge capacity will increase; The ratio of the line of apsides of stator curve can not exceed certain value, otherwise causes blade to cut off easily, has only the height that increases stator to increase discharge capacity; But the stator height has increased; The profile tolerance of curved surface and can't reach required precision with the perpendicularity of end face, blade, rotor height also will increase simultaneously, and precision is difficult to control; Overall performance influence to oil pump is very big, has drawback; (2) after discharge capacity increases, when idling, can satisfy steering box and servo-cylinder input flow rate demand, this moment, flow control valve was not opened overflow; But when high speed, because the flow of steering pump output is a constant flow rate, the original structure steering pump has only a flow control valve and flow-off; This moment, unnecessary flow just passed through a flow control valve from the flow-off overflow, and is because discharge capacity is bigger, very fast from the velocity ratio of flow-off overflow during high speed; Cause oily temperature temperature rise too fast, the temperature of whole system is higher, and (engineering truck, mining car oil temperature can reach 100 ℃～140 ℃, mainly are because the oil pump overflow produces idle work; Change into heat, it is too high that circulation causes oil liquid temperature for a long time), Sealing is aging to be accelerated; Cause leakage of oil easily; The too high kinematical viscosity of fluid that causes of oil temperature sharply reduces, and oil pump inner body wearing and tearing aggravation causes reduce greatly the working life of steering pump.
[summary of the invention]
The object of the invention solves the problems of the prior art exactly, proposes the two stator bivalve body power-assisted steering pumps of a kind of automobile hydraulic, can improve the reliability of steering pump, reduces the self-heating amount, increases the service life.
For realizing above-mentioned purpose; The present invention proposes the two stator bivalve body power-assisted steering pumps of a kind of automobile hydraulic; Comprise the pump housing, have before pump cover, pump shaft, middle oil distribution casing, back oil distribution casing, the first stator rotor blade assembly, the second stator rotor blade assembly, the valve assembly of oil distribution casing structure; Said pump cover, the first stator rotor blade assembly, middle oil distribution casing, the second stator rotor blade assembly, back oil distribution casing are installed in series after on the pump shaft successively, are installed in the pump housing, and form fuel-displaced epicoele and fuel-displaced cavity of resorption between the pump housing; Said valve assembly comprises C runner hole, two valve openings, big valve body and little valve bodies; Be separately installed with big valve body and little valve body in two valve openings, said C runner hole communicates with fuel-displaced epicoele, and the bottom of two valve openings all communicates with fuel-displaced cavity of resorption.
As preferably, be the structure that is connected in parallel between said big valve body and the little valve body.Rational in infrastructure, ingenious.
As preferably, the said first stator rotor blade assembly comprises first stator, is installed in the first rotor on the pump shaft and is located at first blade on the first rotor; The second stator rotor blade assembly comprises second stator, is installed in second rotor on the pump shaft and is located at second epitrochanterian second blade.Simple in structure, cost is low.
As preferably, adopt locating stud to be installed in series between said pump cover, the first stator rotor blade assembly, middle oil distribution casing, the second stator rotor blade assembly, the back oil distribution casing.Simple in structure, easy for installation, cost is low.
As preferably, be provided with spring seat below the said little valve body, on the said spring seat spring is installed, said spring withstands steel ball, makes steel ball withstand little valve body.Reasonable control flow rate, and simple in structure, easy for installation.
Beneficial effect of the present invention: the present invention adopts two stator double body structures, when oil pump in tick-over not during overflow, the whole discharge capacity of oil pump is two stator discharge capacity sums; When high speed operation, 2 all separately overflows of flow that stator produces are because the discharge capacity of single stator is smaller; Flow is also smaller when high speed, and the flow of overflow is also just smaller, when the flow-off area is big equally; Spillway discharge reduces, and flow velocity reduces naturally, compares with single flow-off; Significantly reduced the overflow heating value, the system oil temperature drop is low, has improved the reliability and the working life of steering pump.
Characteristic of the present invention and advantage will combine accompanying drawing to be elaborated through embodiment.
[description of drawings]
Fig. 1 is two stationary part sectional views of the two stator bivalve body power-assisted steering pumps of automobile hydraulic of the present invention;
Fig. 2 is the bivalve body portion sectional view of the two stator bivalve body power-assisted steering pumps of automobile hydraulic of the present invention;
Fig. 3 is an I place enlarged view among Fig. 2.
[embodiment]
As shown in Figure 1; The two stator bivalve body power-assisted steering pumps of automobile hydraulic; Comprise the pump housing 2, have before pump cover 1, pump shaft 12, middle oil distribution casing 6, back oil distribution casing 8, the first stator rotor blade assembly, the second stator rotor blade assembly, the valve assembly of oil distribution casing structure; Said pump cover 1, the first stator rotor blade assembly, middle oil distribution casing 6, the second stator rotor blade assembly, back oil distribution casing 8 are installed in series after on the pump shaft 12 successively, are installed in the pump housing 2, and form fuel-displaced epicoele and fuel-displaced cavity of resorption between the pump housing 2; Said valve assembly comprises C runner hole, two valve openings, big valve body 13 and little valve bodies 15; Be separately installed with big valve body 13 and little valve body 15 in two valve openings, said C runner hole communicates with fuel-displaced epicoele, and the bottom of two valve openings all communicates with fuel-displaced cavity of resorption.The said first stator rotor blade assembly comprises first stator 3, is installed in the first rotor 4 on the pump shaft 12 and is located at first blade 5 on the first rotor 4; The second stator rotor blade assembly comprises second stator 9, is installed in second rotor 10 on the pump shaft 12 and is located at second blade 11 on second rotor 10.Adopt locating stud 7 to be installed in series between said pump cover 1, the first stator rotor blade assembly, middle oil distribution casing 6, the second stator rotor blade assembly, the back oil distribution casing 8.Through pump shaft 12 and locating stud 7 pump cover 1 (preceding oil distribution casing structure and pump cover are as a whole), first stator 3, the first rotor 4, middle oil distribution casing 5, second stator 9, second rotor 10 and afterwards oil distribution casing 8 series be fitted together; Integral body is combined with the pump housing 2 again; Form fuel-displaced epicoele and two oil extraction districts; C runner hole in the middle of fuel-displaced epicoele and the valve opening is connected; The bottom of fuel-displaced cavity of resorption and two valve openings is connected, and separates fuel-displaced epicoele and fuel-displaced cavity of resorption through big valve body 13 and little valve body 15, and this moment, disconnected in two chambeies.
Like Fig. 2, shown in 3, be the structure that is connected in parallel between said big valve body 13 and the little valve body 15.Said little valve body 15 belows are provided with spring seat 18, on the said spring seat 18 spring 17 are installed, and said spring 17 withstands steel ball 16, make steel ball 16 withstand little valve body 15.
Two stator bivalve body power-assisted steering pump work principles: when the engine-driving steering pump is worked, the oil pump oil extraction of starting working, when the engine speed that drives the steering pump rotation at n
1During with interior work; The fluid flow that this moment, pump cover 1 was discharged with the combination of first stator 3, the first rotor 4, first blade 5 and middle oil distribution casing 6 flows to fuel-displaced epicoele, and the fluid that the combination of middle oil distribution casing 6 and second stator 9, second rotor 10, second blade 11 and back oil distribution casing 8 is discharged flows to fuel-displaced cavity of resorption, at this moment owing to rotating speed in n1; The fluid resistance of fuel-displaced cavity of resorption is not enough to overcome the pretightening force of big valve body 13 springs; This moment, big valve body 13 was motionless, and first flow-off 19 and second flow-off 20 are sealed fully, and this moment, the fluid of fuel-displaced epicoele was also sealed; Can't be from 19 overflows of first flow-off; Fluid can only overcome the resistance of the steel ball 16 following springs 17 in the little valve body 15, and the fluid of fuel-displaced epicoele flow in the fuel-displaced cavity of resorption from this mouth, flows in the steering system through oil outlet again; Because big valve body 13 does not produce overflow, the flow of output this moment:
Q＝Q
1+Q
2，
Q
1=q
1* n (flow of fuel-displaced epicoele) q
1The discharge capacity of-the first stator 3
Q
2=q
2* n (flow of fuel-displaced epicoele) q
2The discharge capacity of-the second stator 9
N-steering pump rotating speed
Because the discharge capacity of this kind structural requirement first stator 3 and second stator 9 must be identical; Be again to be connected on the same axle; Rotation speed n is also identical, so output flow Q=2q * n, and this moment, the discharge capacity of two stators was the relations that add up; The flow of output is bigger naturally, satisfies the vehicle of the big traffic demand of low speed.
When continuing to raise, the rotating speed of motor reaches n
1Or n
1When above, the fluid that is input to fuel-displaced cavity of resorption increases, and receives the damping function of damping hole; The liquid resistance of fuel-displaced cavity of resorption increases; The resistance of fuel-displaced cavity of resorption is greater than the initial tension of spring of big valve body 13 at this moment, and big valve body 13 moves upward, and this moment, first flow-off 19 and second flow-off 20 were opened overflow simultaneously; This moment, a part of fluid of fuel-displaced epicoele overflowed to the oil suction district through first flow-off 19; Part fluid is pushed little valve port open and is flow in the fuel-displaced cavity of resorption through overcoming the resistance of the spring 17 under the steel ball 16 in the little valve body 15, and the interior a part of fluid of fuel-displaced cavity of resorption this moment overflows to the oil suction district through second flow-off 20; The fluid that part fluid and fuel-displaced epicoele flow into flow in the steering box through oil outlet, keeps the normal demand flow of steering box.Along with the rising that engine speed is not stopped, the flow that steering pump is input to fuel-displaced epicoele and fuel-displaced cavity of resorption constantly increases, because the specific (special) requirements of steering box, at n
1More than the rotating speed, requiring the flow of steering pump output is the constant current amount, and changes in flow rate is little, and from the also constantly increase of flow of flow-off 1 and flow-off 2 overflows, this moment, the fuel-displaced and spillway discharge of steering pump was following mode:
This moment, the steering pump rotating speed was n
2, n
2>=n
1, the steering box demand volume is Q, and Q is a steady state value, and first stator 3 is identical with second stator, 9 discharge capacities, therefore the flow Q of fuel-displaced epicoele
1The flow Q of=fuel-displaced cavity of resorption
2
The flow of fuel-displaced epicoele is: Q
1=q * n
2
The flow of fuel-displaced cavity of resorption is: Q
2=q * n
2
Since the flow Q fixed value of oil outlet output, the flow sum of just fuel-displaced epicoele and the output of fuel-displaced cavity of resorption, and fuel-displaced epicoele is from the flow Q of flow-off 1 overflow at this moment
3=Q
1-Q/2, fuel-displaced cavity of resorption is from the flow Q of flow-off 2 overflows
4=Q
2-Q/2.For single stator and single valve body structure, (under the equal rotating speed, discharge capacity is 2q, and Q is identical for the oil outlet flow) under the same service condition, the excess flow of single flow-off is Q
3+ Q
4, flow velocity is too fast, causes the fluid temperature rise too fast.And two stator double body structures are divided into 2 identical values (total displacement is constant) to the stator discharge capacity, and the discharge capacity of single stator is smaller, and the flow that flow into single oil pocket during high speed rotating is also smaller; First flow-off 19 is identical with the excess flow of second flow-off 20, and the spillway discharge of 2 flow-offs has only half spillway discharge of single stator single valve body structure, under the same overflow area; The flow velocity of overflow is also just slow, and the heating nature of oil pump is just fewer, experiment confirm; Under same service condition, than low about 30 ℃ of single stator single valve body structure, the system oil temperature control is in small range; The reduction of system oil temperature is to improve the working life of oil pump greatly.
Two stator bivalve body power-assisted steering pump performance parameters:
1. single stator discharge capacity scope: 12～20ml/r
2. pressure range: maximum 16MPa
3. speed range: 500～4000r/min
The foregoing description is to explanation of the present invention, is not to qualification of the present invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (5)
1. two stator bivalve body power-assisted steering pumps of automobile hydraulic; It is characterized in that: comprise the pump housing (2), have before pump cover (1), pump shaft (12), middle oil distribution casing (6), back oil distribution casing (8), the first stator rotor blade assembly, the second stator rotor blade assembly, the valve assembly of oil distribution casing structure; Said pump cover (1), the first stator rotor blade assembly, middle oil distribution casing (6), the second stator rotor blade assembly, back oil distribution casing (8) are installed in series successively after pump shaft (12) is gone up; Be installed in the pump housing (2); And form fuel-displaced epicoele and fuel-displaced cavity of resorption between the pump housing (2), said valve assembly comprises C runner hole, two valve openings, big valve body (13) and little valve bodies (15), is separately installed with big valve body (13) and little valve body (15) in two valve openings; Said C runner hole communicates with fuel-displaced epicoele, and the bottom of two valve openings all communicates with fuel-displaced cavity of resorption.
2. the two stator bivalve body power-assisted steering pumps of automobile hydraulic as claimed in claim 1 is characterized in that: be the structure that is connected in parallel between said big valve body (13) and the little valve body (15).
3. the two stator bivalve body power-assisted steering pumps of automobile hydraulic as claimed in claim 1, it is characterized in that: the said first stator rotor blade assembly comprises first stator (3), is installed in the first rotor (4) on the pump shaft (12) and is located at first blade (5) on the first rotor (4); The second stator rotor blade assembly comprises second stator (9), is installed in second rotor (10) on the pump shaft (12) and is located at second blade (11) on second rotor (10).
4. the two stator bivalve body power-assisted steering pumps of automobile hydraulic as claimed in claim 1 is characterized in that: adopt locating stud (7) to be installed in series between said pump cover (1), the first stator rotor blade assembly, middle oil distribution casing (6), the second stator rotor blade assembly, the back oil distribution casing (8).
5. like the two stator bivalve body power-assisted steering pumps of each described automobile hydraulic in the claim 1～4; It is characterized in that: said little valve body (15) below is provided with spring seat (18); Spring (17) is installed on the said spring seat (18); Said spring (17) withstands steel ball (16), makes steel ball (16) withstand little valve body (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102650472A CN101949385B (en) | 2010-08-24 | 2010-08-24 | Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102650472A CN101949385B (en) | 2010-08-24 | 2010-08-24 | Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101949385A CN101949385A (en) | 2011-01-19 |
| CN101949385B true CN101949385B (en) | 2012-06-06 |
Family
ID=43452987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102650472A Active CN101949385B (en) | 2010-08-24 | 2010-08-24 | Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949385B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155404B (en) * | 2011-04-28 | 2013-06-05 | 全兴精工集团有限公司 | Automobile twin-stage-type hydraulic power-assisted steering vane pump |
| CN102322420B (en) * | 2011-08-25 | 2013-10-23 | 大连创新零部件制造公司 | Sequentially controlled twin steering pump |
| CN104806519A (en) * | 2015-05-11 | 2015-07-29 | 烟台海德汽车零部件有限责任公司 | Multi-section slide valve for automobile power steering pump control valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206578U (en) * | 1987-04-16 | 1988-10-05 | 吴明坚 | Dual effiect variable impeller pump |
| CN2045031U (en) * | 1989-03-15 | 1989-09-27 | 浙江省仙居液压件厂 | Dual-purpose variable paddle pump |
| JPH11343984A (en) * | 1998-05-29 | 1999-12-14 | Toyoda Mach Works Ltd | Tandem pump |
| CN1916415A (en) * | 2006-03-14 | 2007-02-21 | 阜新液压油泵厂 | Vane pump in large discharge capacity |
| CN201818497U (en) * | 2010-08-24 | 2011-05-04 | 全兴精工集团有限公司 | Automotive hydraulic steering pump with dual stators and dual valve bodies |
-
2010
- 2010-08-24 CN CN2010102650472A patent/CN101949385B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101949385A (en) | 2011-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5868522B2 (en) | Drive system and electric vehicle equipped with the drive system | |
| CN101949385B (en) | Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles | |
| CN103101522A (en) | Auxiliary brake device applied to non-drive axle | |
| CN203111153U (en) | Auxiliary braking device applied to non-driving axle | |
| CN105275531A (en) | Oil pump for engine | |
| CN202117920U (en) | Automobile double-stage type hydraulic power-assisted steering vane pump | |
| CN102155404B (en) | Automobile twin-stage-type hydraulic power-assisted steering vane pump | |
| CN112392782A (en) | Steering lifting confluence hydraulic system of mining dump truck | |
| CN201818497U (en) | Automotive hydraulic steering pump with dual stators and dual valve bodies | |
| CN202047981U (en) | Automotive hydraulic power assisted steering pump | |
| CN201574928U (en) | Three-oil-mouth steering vane pump for lowering oil temperature | |
| CN105216861A (en) | Trac. hydrostatic power steering system is united | |
| US10077834B2 (en) | Hydraulic control system for a transmission | |
| CN204572865U (en) | The stator impeller of hydrodynamic retarder | |
| CN203228771U (en) | Valve group for controlling hydraulic retarder and automatic hydraulic retarder comprising same | |
| CN201390253Y (en) | Hydraulic transmission device of anti-explosion mining steel-wheel standard-rail locomotive | |
| CN204610275U (en) | For carrying the sliding formula pump of fluid and the control slide block for sliding formula pump | |
| CN103306799A (en) | Pump in engine | |
| CN109027216B (en) | A hydraulic system suitable for automatic transmission of new energy vehicles | |
| CN114135603B (en) | System that controls retarder torque through electric pump and solenoid valve | |
| CN2835678Y (en) | Steering pump flow control device | |
| CN2913122Y (en) | Combined valve type cycloidal hydraulic steering gear | |
| CN210686497U (en) | Hydraulic motor with high climbing performance and engineering transport vehicle | |
| CN210686481U (en) | Air conditioning valve set for engineering vehicle | |
| CN201074604Y (en) | Twin type power steering pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |