CN202360389U - Steering pump - Google Patents
Steering pump Download PDFInfo
- Publication number
- CN202360389U CN202360389U CN2011204800332U CN201120480033U CN202360389U CN 202360389 U CN202360389 U CN 202360389U CN 2011204800332 U CN2011204800332 U CN 2011204800332U CN 201120480033 U CN201120480033 U CN 201120480033U CN 202360389 U CN202360389 U CN 202360389U
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- Prior art keywords
- pump
- steering
- steering pump
- axle sleeve
- thermal conductor
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- Expired - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model provides a steering pump belonging to the technical field of machines and being used for solving the problem that steering noise is easily generated by the existing steering pump and bending resistance of a pump shaft is low. The steering pump comprises a pump body and a pump shaft penetrated in the pump body, wherein the pump shaft is sleeved with a shaft sleeve; the shaft sleeve is fixed on the pump body; and the inner side surface of the shaft sleeve is provided with an oil storage tank. The pump shaft of the steering pump is strong in bending resistance; and the steering pump is low in working noise and long in service life.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of oil hydraulic pump, particularly a kind of steering pump.
Background technique
Along with developing rapidly of world car industry, people require increasingly high to the performance of automobile and the travelling comfort and the performance and price of driving.Therefore, in order to satisfy people's requirement sensitive, in automobile steering system, used power steering pump to motor turning.
In order to satisfy the needs of development of automobile, people have manufactured and designed various steering pumps to satisfy actual demand.Its pump shaft of existing steering pump all through bearing fixing on the pump housing, for example, the aluminium alloy power steering pump that the disclosed a kind of light-duty vehicle of Chinese patent document is used [Chinese patent number: ZL200620101860.5; Notice of authorization: CN2893229Y]; Comprise the aluminum alloy pump housing, pump shaft, rotor, stator, blade, aluminium-alloy wire oil distribution casing, aluminum alloy pump cover, flow control valve etc.; Pump shaft is installed in the aluminum alloy pump housing through sliding bearing, and preceding oil distribution casing utilizes the elastic compression of holddown spring on stator, is installed in the pump housing through sliding bearing through pump shaft; And this sliding bearing has the screw type oil groove, can realize the requirement that bearing is lubricious.The disclosed a kind of variable displacement power steering pump of Chinese patent document [notice of authorization: CN201884279U] comprises the pump housing, bearing, transmission shaft, black box, protecgulum etc. for another example, and its transmission shaft also is to be located on the pump housing through bearing.Pump shaft drives the bearing inner race motion, and bearing will receive the load influence for a long time, because the incompatible especially motion under high load and high rotating speed of bearing; Bearing begins to lose efficacy after a time, noise occurs turning to, in addition because bearing belongs to standardized production; The limited length of bearing; Pump shaft and bearing cotact area are little, cause the flex resistance of pump shaft to reduce like this, influence the intensity of steering pump.
Summary of the invention
The purpose of the utility model is to have the problems referred to above to existing technology, has proposed a kind of long service life, steering pump that noise is little.
The purpose of the utility model can realize through following technical proposal: a kind of steering pump comprises the pump housing and is located in the pump shaft on the pump housing that be arranged with axle sleeve on the described pump shaft, described axle sleeve is fixed on the pump housing, has oil storage tank on the described axle sleeve inner side surface.
When steering pump came into operation, driving mechanism drove pump shaft and in axle sleeve, rotates, and through being stored in grease in the oil storage tank on the axle sleeve inner side surface to pump shaft and shaft sleeve lubricating, increased working life.
In above-mentioned steering pump, described oil storage tank is shape in the shape of a spiral, and two ends are all extended and axially connected.Spiral helicine oil storage tank can guarantee the comprehensive of pump shaft and axle sleeve lubricated, and the axial perforation of oil storage tank can be accomplished the adding of grease under situation about need not dismantle.
In above-mentioned steering pump, the two ends of described oil storage tank all have the trumpet-shaped oil-feed portion that is.The adding of easy design grease like this.
In above-mentioned steering pump, described axle sleeve comprises all cylindrical matrix and thermal conductor, and described thermal conductor adopts Heat Conduction Material to process; Described matrix is set on the thermal conductor, and described matrix is fixedly connected with thermal conductor; Be fixed with the wearing layer that adopts high-abrasive material to process on the described thermal conductor inwall.The rotation meeting of pump shaft produces and can rub with shaft room; So with the wearing layer of pump shaft surface of contact for adopting high-abrasive material to process; Increase the working life of axle sleeve, have friction that heat must be arranged, so need thermal conductor that heat is conducted; Thermal conductor links to each other with cooling system, avoids axle sleeve and pump shaft to influence work owing to temperature is too high.
In above-mentioned steering pump, described Heat Conduction Material is aluminium or copper.Aluminium and copper thermal conductivity are good.
In above-mentioned steering pump, described high-abrasive material is copper base alloy or pottery.
In above-mentioned steering pump, described matrix adopting steel is processed.
In above-mentioned steering pump, the thickness of described wearing layer is 0.2mm～0.8mm.
In above-mentioned steering pump, the thickness of described thermal conductor is 0.2mm～0.8mm.
In above-mentioned steering pump, the degree of depth of described oil storage tank is 0.2mm～1mm.Such degree of depth can satisfy steering pump does not influence axle sleeve simultaneously to the demand of grease mechanical strength.
In above-mentioned steering pump, the length of described axle sleeve is 25mm～30mm.In the prior art, the length of bearing basically all is 12mm, and the length of the existing relatively steering pump bearing of this steering pump axle sleeve increases greatly, has increased the area of contact of pump shaft and axle sleeve, has increased the anti-bending strength of pump shaft.
In above-mentioned steering pump, described pump shaft is arranged with annular oil seal on the outer end, and the inwall of described annular oil seal and the pump shaft outside leans, the lateral part of annular oil seal be fixed on the pump housing and and the pump housing between form sealing.The annular oil sealing can well make the steering pump sealing, and the grease in the steering pump is overflowed.
Compared with prior art, the relative bearing of the sleeve length of this steering pump obviously extends, so the increase of the surface of contact of pump shaft and axle sleeve, has increased the anti-bending strength of pump shaft.Have oil storage tank, wearing layer, thermal conductor on the axle sleeve, bearing of the prior art relatively increases working life, has reduced generating noise, has increased the time lag of maintaining.
Description of drawings
Fig. 1 is the structural representation of this steering pump.
Fig. 2 is the side view of the axle sleeve of this steering pump.
Fig. 3 is the real end view drawing of axle sleeve of this steering pump.
Among the figure, 1, axle sleeve; 2, pump shaft; 3, the pump housing; 4, annular oil seal; 5, belt belt wheel; 6, oil storage tank; 7, thermal conductor; 8, wearing layer; 9, matrix.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technological scheme of the utility model is done further to describe, but the utility model is not limited to these embodiments.
As shown in Figure 1, this steering pump comprises axle sleeve 1, the pump housing 3, pump shaft 2, belt belt wheel 5.
Like Fig. 1, shown in Figure 2, pump shaft 2 one ends are located in the pump housing 3 specifically, and the other end is connected with belt belt wheel 5; Be arranged with axle sleeve 1 on the pump shaft 2, the length of axle sleeve 1 is 25mm～30mm, and the length of present embodiment Intermediate shaft sleeve 1 is 30mm; Axle sleeve 1 is fixed on the pump housing 3, has oil storage tank 6 on axle sleeve 1 inner side surface, and oil storage tank 6 is shape in the shape of a spiral; Two ends are all extended and are axially connected; The two ends of oil storage tank 6 all have and are trumpet-shaped filler opening, and the degree of depth of oil storage tank 6 is 0.2mm～1mm, and the degree of depth of oil storage tank 6 is 0.3mm in the present embodiment.This degree of depth can be so that the grease in the oil storage tank can use regular maintenance the time, guarantees the intensity of axle sleeve simultaneously.Pump shaft is arranged with annular oil seal 4 on 2 outer ends, and the inwall of annular oil seal 4 and pump shaft 2 outsides lean, the lateral part of annular oil seal 4 be fixed on the pump housing 3 and and the pump housing 3 between form sealing, prevent overflowing of grease.
As shown in Figure 3, axle sleeve 1 comprises all cylindrical matrix 9 and thermal conductor 7, and thermal conductor 7 adopts Heat Conduction Material to process, and Heat Conduction Material is an aluminium; The thickness of thermal conductor is 0.2mm～0.8mm, and the thickness of aluminium is 0.5mm in the present embodiment, and matrix 9 is set on the thermal conductor 7; Matrix 9 adopts steel to process, and thickness is 1mm, and matrix 9 is fixedly connected with thermal conductor 7; Be fixed with the wearing layer 8 that adopts high-abrasive material to process on thermal conductor 7 inner side surfaces, high-abrasive material is a copper base alloy, and the thickness of wearing layer 8 is 0.2mm～0.8mm; Copper base alloy thickness is 0.5mm in the present embodiment, and copper base alloy has high fatigue strength and bearing capacity, good wear resistance; Good thermal conductivity, friction factor is low, can be 250 ℃ of following proper functioning.The integral thickness of axle sleeve 1 is 2mm.
In actual use, high-abrasive material can also be pottery, and Heat Conduction Material can also be copper, all can reach the design usage requirement.
When steering pump comes into operation; Drive belt belt wheel 5 by motor through belt and rotate, belt belt wheel 5 drives pump shaft 2 and in axle sleeve 1, rotates, through the grease lubrication that stores in the oil storage tank 6; Matrix 9 is fixed the axle sleeve 1 and the pump housing 3; Thermal conductor 7 can conduct heat, and wearing layer 8 has increased the durability of axle sleeve 1, and annular oil seal 4 prevents that the grease in the oil storage tank 6 from overflowing.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as axle sleeve 1, pump shaft 2, the pump housing 3, annular oil seal 4, belt belt wheel 5, oil storage tank 6, thermal conductor 7, wearing layer 8, matrix 9 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (10)
1. a steering pump comprises the pump housing (3) and is located in the pump shaft (2) on the pump housing (3), it is characterized in that, be arranged with axle sleeve (1) on the described pump shaft (2), described axle sleeve (1) is fixed on the pump housing (3), has oil storage tank (6) on described axle sleeve (1) inner side surface.
2. steering pump according to claim 1 is characterized in that, described oil storage tank (6) is shape in the shape of a spiral, and two ends are all extended and axially connected.
3. steering pump according to claim 2 is characterized in that, the two ends of described oil storage tank (6) all have the trumpet-shaped oil-feed portion that is.
4. steering pump according to claim 1 is characterized in that, described axle sleeve (1) comprises all cylindrical matrix (9) and thermal conductor (7), and described thermal conductor (7) adopts Heat Conduction Material to process; Described matrix (9) is set on the thermal conductor (7), and described matrix (9) is fixedly connected with thermal conductor (7); Be fixed with the wearing layer (8) that adopts high-abrasive material to process on described thermal conductor (7) inwall.
5. steering pump according to claim 4 is characterized in that, described Heat Conduction Material is aluminium or copper.
6. steering pump according to claim 4 is characterized in that, described high-abrasive material is copper base alloy or pottery.
7. steering pump according to claim 4 is characterized in that, described matrix (9) adopts steel to process.
8. according to claim 4 or 5 or 6 or 7 described steering pumps, it is characterized in that the thickness of described wearing layer (8) is 0.2mm～0.8mm.
9. according to claim 4 or 5 or 6 or 7 described steering pumps, it is characterized in that the thickness of described thermal conductor (7) is 0.2mm～0.8mm.
10. according to any described steering pump in the claim 1～7, it is characterized in that the degree of depth of described oil storage tank (6) is 0.2mm～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204800332U CN202360389U (en) | 2011-11-28 | 2011-11-28 | Steering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204800332U CN202360389U (en) | 2011-11-28 | 2011-11-28 | Steering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360389U true CN202360389U (en) | 2012-08-01 |
Family
ID=46571579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204800332U Expired - Fee Related CN202360389U (en) | 2011-11-28 | 2011-11-28 | Steering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360389U (en) |
-
2011
- 2011-11-28 CN CN2011204800332U patent/CN202360389U/en not_active Expired - Fee Related
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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: 20120801 Termination date: 20131128 |