CN201802621U - Vane pump - Google Patents
Vane pump Download PDFInfo
- Publication number
- CN201802621U CN201802621U CN2010201815295U CN201020181529U CN201802621U CN 201802621 U CN201802621 U CN 201802621U CN 2010201815295 U CN2010201815295 U CN 2010201815295U CN 201020181529 U CN201020181529 U CN 201020181529U CN 201802621 U CN201802621 U CN 201802621U
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- CN
- China
- Prior art keywords
- vane pump
- main shaft
- spindle
- pump
- arc grooves
- 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.)
- Expired - Fee Related
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a vane pump, in particular to a vane pump used in an automobile power-assisted steering pump, which comprises a step-type spindle (1), and is characterized in that circular arc grooves (30) are formed on the step-type spindle (1) in the positions a gear (2) and a bearing (27) are mounted. Since the original right-angled grooves on the spindle are changed into the circular arc grooves, the internal stress of the spindle in heat treatment after processing is balanced, so that fractures are effectively prevented, the fracture of the spindle is also avoided, and the service life of the vane pump is prolonged.
Description
Technical field
The utility model relates to vane pump, particularly a kind of vane pump that is used on the automobile assisted power steering pump.
Background technique
Vane pump is used on the automobile assisted power steering pump usually, because the oil transportation amount is even, pressure pulsation is less, and volumetric efficiency is higher, running steadily, volume is little, in light weight and be widely used on the automobile.By the working principle classification, vane pump is divided into single-acting formula and double action.Its structure generally all is made up of stator, rotor, blade, the pump housing and end cap.As single-acting formula vane pump: the stator inner surface of single-acting formula vane pump is circular, and an eccentric amount e is arranged between rotor and the stator, only has an oil suction groove and a pressure oil groove on the end cap.When rotor rotated a circle, each blade reciprocatingly slided in rotor once, the variation that every adjacent two interlobate sealed volume generations once increase and dwindle.Be that rotor whenever circles, realize an oil suction and press oil that therefore this pump is called single-acting formula vane pump.The eccentric amount e of this pump is made adjustable usually, and the change of offset will cause the respective change of oil hydraulic pump output flow, and offset increases, and the oil transportation amount also increases thereupon.So single-acting formula vane pump uses as volume adjustable hydraulic pump usually, so consumption is also quite big.But phenomenon of rupture often takes place in the main shaft of finding vane pump in practice, even fragment into several sections fault.Through learning after the close inspection is because the original tool withdrawal groove on the main shaft is a trough with straight angle, the right angle part is because main shaft must be heat-treated after processing, and internal stress causes the right angle part that slight crack is arranged, the vibrations when adding automobile running, the main shaft that is extended to of accelerating slight crack ruptures, and the whole piece main shaft must be scrapped.
The model utility content
The purpose of this utility model is at above-mentioned defective, and a kind of main shaft obvious vane pump that prolongs in working life is provided.
The technical solution of the utility model is to comprise the step type main shaft, it is characterized in that the position that gear, bearing are installed on the described step type main shaft is provided with arc groove.
Described arc groove has four from left to right in being distributed as on the main shaft: the position that gear is installed on the axle is provided with two arc grooves, and bearings mounted position also is provided with two arc grooves on the axle.
The utility model has the advantages that owing to original trough with straight angle on the main shaft is improved to arc groove, make the internal stress equilibrium of main shaft, prevented slight crack effectively, also just stopped the phenomenon of rupture of main shaft in the processing after-baking, thus the working life of having improved main shaft.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of main shaft.
Embodiment
With reference to Fig. 1, Fig. 2, the 1-main shaft, the 2-gear, the 3-circlip for shaft, oil distribution casing under the 4-, the 5-blade, 6-O type circle, the 7-rotor, the 8-stator, the 9-pin, 10-O type circle, the last oil distribution casing of 11-, 12-O type circle, 13-bonnet jump ring, the 14-bonnet, the 15-composite bush, lid spring behind the 16-, the 17-bonded washer, 18-pressure limiting screw, 19-pressure limiting spring, 20-pressure regulation pad, the 21-valve body, 22-valve body primary screw, the 23-prong, 24-valve body little spring, 25-O type circle, the 26-pump housing, the 27-rolling bearing, the 28-circlip for hole, the 29-outside framework oil seal, the 30-arc groove.Innovative point of the present utility model is the position of original installation gear 2 and bearing 27 on step type main shaft 1, and original trough with straight angle is improved to arc groove 30.The improvement of point has but prolonged the working life of main shaft 1 significantly like this, has stopped the phenomenon of rupture of main shaft in actual applications.As shown in Figure 2, the position of gear 2 being installed at main shaft 1 is provided with two arc grooves, in like manner at the position that bearing 27 is installed two arc grooves is set also.When main shaft 1 after step type is made in turning, original trough with straight angle is changed into arc groove, again through heat treatment and grinding, be installed on the vane pump, actual verification has been stopped the phenomenon of rupture of vane pump main shaft in service, prolong the working life of main shaft significantly, also just prolonged the working life of vane pump.
Claims (2)
1. vane pump comprises step type main shaft (1), it is characterized in that described step type main shaft (1) upward is provided with arc groove (30) in the position of installation gear (2), bearing (27).
2. by the described vane pump of claim 1, it is characterized in that described arc groove (30) being distributed as on main shaft (1) has four from left to right: the position that gear (2) is installed on the axle is provided with two arc grooves, and the position that bearing (27) is installed on the axle also is provided with two arc grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201815295U CN201802621U (en) | 2010-04-30 | 2010-04-30 | Vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201815295U CN201802621U (en) | 2010-04-30 | 2010-04-30 | Vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802621U true CN201802621U (en) | 2011-04-20 |
Family
ID=43872122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201815295U Expired - Fee Related CN201802621U (en) | 2010-04-30 | 2010-04-30 | Vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330673A (en) * | 2011-07-19 | 2012-01-25 | 大连液压件有限公司 | Pressure withstanding outflow type power-assisted steering pump |
| CN102330674A (en) * | 2011-07-19 | 2012-01-25 | 大连液压件有限公司 | Pressure-proof inside-discharge type steering power-assisted pump |
-
2010
- 2010-04-30 CN CN2010201815295U patent/CN201802621U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330673A (en) * | 2011-07-19 | 2012-01-25 | 大连液压件有限公司 | Pressure withstanding outflow type power-assisted steering pump |
| CN102330674A (en) * | 2011-07-19 | 2012-01-25 | 大连液压件有限公司 | Pressure-proof inside-discharge type steering power-assisted pump |
| CN102330673B (en) * | 2011-07-19 | 2016-01-06 | 大连液压件有限公司 | Pressure withstanding outflow type power-assisted steering pump |
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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: 20110420 Termination date: 20120430 |