CN202117920U - Automobile double-stage type hydraulic power-assisted steering vane pump - Google Patents
Automobile double-stage type hydraulic power-assisted steering vane pump Download PDFInfo
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- CN202117920U CN202117920U CN2011201304307U CN201120130430U CN202117920U CN 202117920 U CN202117920 U CN 202117920U CN 2011201304307 U CN2011201304307 U CN 2011201304307U CN 201120130430 U CN201120130430 U CN 201120130430U CN 202117920 U CN202117920 U CN 202117920U
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- pump
- oil
- oily passage
- fuel
- displaced
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Abstract
The utility model discloses an automobile double-stage type hydraulic power-assisted steering vane pump. A pump cover, a front oil distribution tray, a first-stage stator-rotor vane assembly, a middle oil distribution tray, a second-stage stator-rotor vane assembly and a rear oil distribution tray which are sequentially connected in series are installed on a pump shaft and then arranged inside a pump body. An upper oil outlet cavity is arranged between the front oil distribution tray and the pump cover, and a lower oil outlet cavity is arranged between the rear oil distribution tray and the bottom of the pump body. A first flow channel in a valve assembly is communicated with the upper oil outlet cavity. A first valve rod assembly, a first oil channel and a second oil channel are arranged inside the first flow channel. The first oil channel is communicated with an oil absorbing area in the pump, and the second oil channel is communicated with the lower oil outlet cavity, and a second flow channel is communicated with the lower oil outlet cavity. A second valve rod assembly, a third oil channel and a fourth oil channel are arranged inside the second flow channel. The third oil channel is communicated with the oil absorbing area in the pump, and the fourth oil channel is communicated with an oil outlet. The automobile double-stage type hydraulic power-assisted steering vane pump has the advantages of greatly reducing heating value of overflow, improving reliability of a steering pump and prolonging service life of the steering pump.
Description
Technical field
The utility model relates to automobile stage type hydraulic power-assisted steering vane pump.
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.
The model utility content
The purpose of the utility model 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.
In order to solve the problems of the technologies described above; The utility model is realized through following technological scheme: automobile stage type hydraulic power-assisted steering vane pump; Comprise the pump housing, pump cover, pump shaft, preceding oil distribution casing, middle oil distribution casing, back oil distribution casing, first order stator rotor blade assembly, second level stator rotor blade assembly, valve assembly, said pump cover, preceding oil distribution casing, first order stator rotor blade assembly, middle oil distribution casing, second level stator rotor blade assembly, back oil distribution casing are arranged in the pump housing after being installed in series successively on pump shaft, are provided with fuel-displaced epicoele between said preceding oil distribution casing and the pump cover; Be provided with fuel-displaced cavity of resorption between said back oil distribution casing and the pump housing bottom; Said valve assembly comprises first flow, second runner, first valve rod assembly, second valve rod assembly, and said first flow communicates with fuel-displaced epicoele, is provided with first valve rod assembly in the said first flow; Have the first oily passage and the second oily passage in the said first flow; The said first oily passage communicates with the interior oil suction district of pump, and the said second oily passage communicates with fuel-displaced cavity of resorption, and said second runner communicates with fuel-displaced cavity of resorption; Be provided with second valve rod assembly in said second runner; Have the 3rd oily passage and the 4th oily passage in said second runner, the said the 3rd oily passage communicates with the interior oil suction district of pump, and the said the 4th oily passage communicates with oil outlet.
Preferably; Said first valve rod assembly comprises first spool, first spring; Said first spring is arranged between the end and first flow top of first spool, through the oil pressure in the fuel-displaced epicoele the first spool jack-up is realized being communicated with of fuel-displaced epicoele and the first oily passage and the second oily passage; Set internal pressure through the elastic force of spring and reach to open first spool when how to be worth, realize control automatically, rational in infrastructure, ingenious.
Preferably; Said second valve rod assembly comprises second spool, second spring; Said second spring is arranged between the end and the second runner top of second spool, through the oil pressure in the fuel-displaced epicoele the second spool jack-up is realized being communicated with of fuel-displaced epicoele and the 3rd oily passage and the 4th oily passage; Set internal pressure through the elastic force of spring and reach to open second spool when how to be worth, realize control automatically, rational in infrastructure, ingenious.
Preferably, said first order 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; Second level 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, can effectively reduce cost.
Preferably, be provided with cone valve in the said second oily passage, said cone valve comprises taper valve core and the 3rd spring, is provided with the awl mouth suitable with taper valve core in the said second oily passage, and said the 3rd spring compression taper valve core makes taper valve core withstand the awl mouth; Reasonable control flow rate.
Preferably, fix through four locating studs between said pump cover, preceding oil distribution casing, first order stator rotor blade assembly, middle oil distribution casing, second level stator rotor blade assembly, the back oil distribution casing; Simple in structure, easy for installation.
Compared with prior art, the utility model has the advantages that: the utility model 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, two 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.
Description of drawings
Fig. 1 is the structural representation of the utility model automobile stage type hydraulic power-assisted steering vane pump;
Fig. 2 is the valve body phantom of the utility model automobile stage type hydraulic power-assisted steering vane pump;
Fig. 3 is the structural representation in the first flow in the utility model automobile stage type hydraulic power-assisted steering vane pump;
Fig. 4 is the structural representation in the second oily passage in the utility model automobile stage type hydraulic power-assisted steering vane pump.
Embodiment
Consult Fig. 1, Fig. 2 embodiment for the utility model automobile stage type hydraulic power-assisted steering vane pump; Automobile stage type hydraulic power-assisted steering vane pump; Comprise the pump housing 12, pump cover 2, pump shaft 1, preceding oil distribution casing 3, middle oil distribution casing 7, back oil distribution casing 11, first order stator rotor blade assembly, second level stator rotor blade assembly, valve assembly; Said pump cover 2, preceding oil distribution casing 3, first order stator rotor blade assembly, middle oil distribution casing 7, second level stator rotor blade assembly, back oil distribution casing 11 are arranged in the pump housing 12 after being installed in series successively on pump shaft 1; Be provided with fuel-displaced epicoele 21 between oil distribution casing 3 and the pump cover 2 before said; Be provided with fuel-displaced cavity of resorption 22 between said back oil distribution casing 11 and the pump housing 12 bottoms; Said valve assembly comprises first flow 25, second runner, first valve rod assembly, second valve rod assembly, and said first flow 25 communicates with fuel-displaced epicoele 21, is provided with first valve rod assembly in the said first flow 25; Have the first oily passage 32 and the second oily passage 33 in the said first flow 25; The said first oily passage 32 communicates with the interior oil suction district of pump, and the said second oily passage 33 communicates with fuel-displaced cavity of resorption 22, and said second runner communicates with fuel-displaced cavity of resorption 22; Be provided with second valve rod assembly in said second runner; Have the 3rd oily passage 30 and the 4th oily passage 31 in said second runner, the said the 3rd oily passage 30 communicates with the interior oil suction district of pump, and the said the 4th oily passage 31 communicates with oil outlet; As shown in Figure 3; Said first valve rod assembly comprises first spool 23, first spring 24, and said first spring 24 is arranged between the end and first flow 25 tops of first spool 23, through the oil pressure in the fuel-displaced epicoele 21 first spool, 23 jack-up is realized being communicated with of fuel-displaced epicoele 21 and the first oily passage 32 and the second oily passage 33; Said second valve rod assembly comprises second spool 28, second spring 29; Said second spring 29 is arranged between the end and the second runner top of second spool 28, through the oil pressure in the fuel-displaced epicoele 21 second spool, 28 jack-up is realized being communicated with of fuel-displaced epicoele 21 and the 3rd oily passage 30 and the 4th oily passage 31, and said first order stator rotor blade assembly comprises first stator 4, is installed in the first rotor 5 on the pump shaft 1 and is located at first blade 6 on the first rotor 5; Second level stator rotor blade assembly comprises second stator 8, is installed in second rotor 9 on the pump shaft 1 and is located at second blade 10 on second rotor 9; As shown in Figure 4; Be provided with cone valve 26 in the said second oily passage 33; Said cone valve 26 comprises taper valve core 26 and the 3rd spring 27; Be provided with the awl mouth suitable with taper valve core 26 in the said second oily passage 33, said the 3rd spring 27 compresses taper valve core 26 makes taper valve core 26 withstand awl mouthful, fixing through four locating studs 28 between said pump cover 2, preceding oil distribution casing 3, first order stator rotor blade assembly, middle oil distribution casing 7, second level stator rotor blade assembly, the back oil distribution casing 11.
Twin-stage steering blade pump working principle: 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 the combination of pump cover and first stator, the first rotor, first blade and middle oil distribution casing is at this moment discharged flows to fuel-displaced epicoele; In the combination of oil distribution casing and second stator, second rotor, second blade and the back oil distribution casing fluid of discharging flow to fuel-displaced cavity of resorption, this moment since rotating speed at n
1In, the fluid resistance of fuel-displaced cavity of resorption is not enough to overcome the pretightening force of second spring, and this moment, second spool was motionless; The 3rd oily passage and the 4th oily passage are sealed fully, and this moment, the fluid of fuel-displaced epicoele was also sealed, can't be from the first oily passage overflow; Fluid can only overcome the resistance of the 3rd spring in the second oily passage, and the fluid of fuel-displaced epicoele flow in the fuel-displaced cavity of resorption from this oil passage, flows in the steering system through oil outlet again; Owing to do not produce overflow, the flow of output this moment:
Q＝Q
1+Q
2，
Q
1=q
1* n q
1The discharge capacity of-the first stator
Q
2=q
2* n q
2The discharge capacity of-the second stator
N-steering pump rotating speed
Because the discharge capacity of this kind structural requirement first stator and second stator 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 flow 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 second initial tension of spring at this moment, and the 3rd oily passage and the 4th oily passage all are communicated with second runner, the first oily passage is communicated with first flow, and this moment, the first oily passage and the 3rd oily passage were opened overflow simultaneously; This moment, a part of fluid of fuel-displaced epicoele overflowed to the oil suction district through the first oily passage; Part fluid overcomes the resistance of the 3rd spring through the second oily passage, pushes taper valve core open and flows in the fuel-displaced cavity of resorption, and a part of fluid in this moment fuel-displaced cavity of resorption overflows to the oil suction district through the 3rd oily passage; The fluid that part fluid and fuel-displaced epicoele flow into flow in the steering box through the 4th oily passage, 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 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 is identical with the second stator discharge capacity, therefore the flow Q of fuel-displaced epicoele
1The flow Q of=fuel-displaced cavity of resorption
2
The flow in A chamber is: Q
1=q * n
2
The flow in B chamber 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, the flow Q of fuel-displaced epicoele overflow this moment
3=Q
1-Q/2, fuel-displaced cavity of resorption is from the flow Q of overflow
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 two 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; The first oily passage is identical with the excess flow of the 3rd oily passage, and the spillway discharge of two 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: 400～4000r/min
The above is merely the specific embodiment of the utility model; But the technical characteristics of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (6)
1. automobile stage type hydraulic power-assisted steering vane pump; It is characterized in that: comprise the pump housing (12), pump cover (2), pump shaft (1), preceding oil distribution casing (3), middle oil distribution casing (7), back oil distribution casing (11), first order stator rotor blade assembly, second level stator rotor blade assembly, valve assembly; Said pump cover (2), preceding oil distribution casing (3), first order stator rotor blade assembly, middle oil distribution casing (7), second level stator rotor blade assembly, back oil distribution casing (11) are installed in series successively and after pump shaft (1) is gone up, are arranged in the pump housing (12); Be provided with fuel-displaced epicoele (21) between oil distribution casing (3) and the pump cover (2) before said; Be provided with fuel-displaced cavity of resorption (22) between said back oil distribution casing (11) and the pump housing (12) bottom; Said valve assembly comprises first flow (25), second runner, first valve rod assembly, second valve rod assembly, and said first flow (25) communicates with fuel-displaced epicoele (21), and said first flow is provided with first valve rod assembly in (25); Have the first oily passage (32) and the second oily passage (33) in the said first flow (25); The said first oily passage (32) communicates with the interior oil suction district of pump, and the said second oily passage (33) communicates with fuel-displaced cavity of resorption (22), and said second runner communicates with fuel-displaced cavity of resorption (22); Be provided with second valve rod assembly in said second runner; Have the 3rd oily passage (30) and the 4th oily passage (31) in said second runner, the said the 3rd oily passage (30) communicates with the interior oil suction district of pump, and the said the 4th oily passage (31) communicates with oil outlet.
2. automobile stage type hydraulic power-assisted steering vane pump as claimed in claim 1; It is characterized in that: said first valve rod assembly comprises first spool (23), first spring (24); Said first spring (24) is arranged between the end and first flow (25) top of first spool (23), through the oil pressure in the fuel-displaced epicoele (21) first spool (23) jack-up is realized being communicated with of fuel-displaced epicoele (21) and first oily passage (32).
3. automobile stage type hydraulic power-assisted steering vane pump as claimed in claim 1; It is characterized in that: said second valve rod assembly comprises second spool (28), second spring (29); Said second spring (29) is arranged between the end and the second runner top of second spool (28), through the oil pressure in the fuel-displaced epicoele (21) second spool (28) jack-up is realized being communicated with of fuel-displaced epicoele (21) and the 3rd oily passage (30) and the 4th oily passage (31).
4. automobile stage type hydraulic power-assisted steering vane pump as claimed in claim 1 is characterized in that: said first order stator rotor blade assembly comprises first stator (4), is installed in the first rotor (5) on the pump shaft (1) and is located at first blade (6) on the first rotor (5); Second level stator rotor blade assembly comprises second stator (8), is installed in second rotor (9) on the pump shaft (1) and is located at second blade (10) on second rotor (9).
5. automobile stage type hydraulic power-assisted steering vane pump as claimed in claim 1; It is characterized in that: be provided with cone valve in the said second oily passage (33); Said cone valve comprises taper valve core (26) and the 3rd spring (27); Be provided with in the said second oily passage (33) and the suitable awl mouth of taper valve core (26), said the 3rd spring (27) compresses taper valve core (26) makes taper valve core (26) withstand the awl mouth.
6. like each described automobile stage type hydraulic power-assisted steering vane pump in the claim 1 to 5, it is characterized in that: fixing between said pump cover (2), preceding oil distribution casing (3), first order stator rotor blade assembly, middle oil distribution casing (7), second level stator rotor blade assembly, the back oil distribution casing (11) through four locating studs (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201304307U CN202117920U (en) | 2011-04-28 | 2011-04-28 | Automobile double-stage type hydraulic power-assisted steering vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201304307U CN202117920U (en) | 2011-04-28 | 2011-04-28 | Automobile double-stage type hydraulic power-assisted steering vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117920U true CN202117920U (en) | 2012-01-18 |
Family
ID=45458992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201304307U Expired - Lifetime CN202117920U (en) | 2011-04-28 | 2011-04-28 | Automobile double-stage type hydraulic power-assisted steering vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117920U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155404A (en) * | 2011-04-28 | 2011-08-17 | 全兴精工集团有限公司 | Automobile twin-stage-type hydraulic power-assisted steering vane pump |
| WO2015149209A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智优电池集成技术有限公司 | Steering motor |
-
2011
- 2011-04-28 CN CN2011201304307U patent/CN202117920U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155404A (en) * | 2011-04-28 | 2011-08-17 | 全兴精工集团有限公司 | Automobile twin-stage-type hydraulic power-assisted steering vane pump |
| 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 |
| WO2015149209A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智优电池集成技术有限公司 | Steering motor |
| CN106470887A (en) * | 2014-03-31 | 2017-03-01 | 深圳市智行单轴双轮驱动技术有限公司 | A kind of steer motor |
| CN106470887B (en) * | 2014-03-31 | 2018-12-18 | 深圳市智行单轴双轮驱动技术有限公司 | A kind of steering motor |
| US10173721B2 (en) | 2014-03-31 | 2019-01-08 | Shenzhen Zhixing Single-Axle Two-Wheeled Driving Technology Co., Ltd | Steering motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120118 Effective date of abandoning: 20130605 |
|
| RGAV | Abandon patent right to avoid regrant |