CN201535244U - Oil pump for step axle hole machine - Google Patents
Oil pump for step axle hole machine Download PDFInfo
- Publication number
- CN201535244U CN201535244U CN2009202591903U CN200920259190U CN201535244U CN 201535244 U CN201535244 U CN 201535244U CN 2009202591903 U CN2009202591903 U CN 2009202591903U CN 200920259190 U CN200920259190 U CN 200920259190U CN 201535244 U CN201535244 U CN 201535244U
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- CN
- China
- Prior art keywords
- lining
- axis hole
- driven
- driving shaft
- shaft
- 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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Abstract
An oil pump for a step axle hole machine comprises a pump body (1), a pump cover (2), a driving shaft (3), a driving gear (4), a driven shaft (5), a driven gear (6) and linings (71, 72, 73 and 74). The linings (71, 72, 73 and 74) are respectively arranged on a driving shaft hole and a driven shaft hole of the pump body (1) and the pump cover (2) and are in interference fit with the corresponding shaft hole; the driving shaft (3) is arranged in the shaft hole of the left lining (71) and the right lining (72) of the driving shaft; the driven shaft (5) is arranged in the shaft hole of the left lining (73) and the right lining (74) of the driven shaft; and the steps (11, 21, 12 and 22) which are raised towards the center of the shaft holes and can efficiently prevent the linings dropping from the shaft holes are arranged on the position of the driving shaft hole and the driven shaft hole of the pump body (1) and the pump cover (2) close to the end face thereof.
Description
Technical field
The utility model relates to a kind of gear type oil pump, particularly a kind of step axis hole oil pump.
Background technique
Existing gear type oil pump as shown in Figure 1, it comprises the pump housing 1, pump cover 2, driving shaft 3, driving gear 4, driven shaft 5, driven gear 6 and lining; Lining comprises driving shaft left side lining 71, the right lining 72 of driving shaft, driven shaft left side lining 73 and the right lining 74 of driven shaft, and lining (71,72,73,74) is to adopt the interference Placement to be installed in respectively in the active axis hole and driven axis hole of the pump housing 1 and pump cover 2; Driving shaft 3 is installed in the axis hole of driving shaft left side lining 71 and the right lining 72 of driving shaft, and driving shaft 3 middle parts are connected with driving gear 4 interference; Driven shaft 5 is installed in the axis hole of driven shaft left side lining 73 and the right lining 74 of driven shaft, and driven gear 6 interference are connected the middle part of driven shaft 5; The deficiency of this oil pump is: in use, owing to will bear the impact friction of inside and outside vibrations for a long time, and also to bear the pressure that inner machine oil is outwards pushed, make the lining of only a few magnitude of interference deficiency, from the straight-through type axis hole, push out the serious Accident due to quality and the economic loss that often cause lining to deviate from leisure.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of step axis hole oil pump is provided, and it can prevent that lining from deviating from from axis hole.
The technical solution of the utility model is: a kind of step axis hole oil pump, and it comprises the pump housing, pump cover, driving shaft, driving gear, driven shaft, driven gear and lining; Lining comprises driving shaft left side lining, the right lining of driving shaft, driven shaft left side lining and the right lining of driven shaft, each lining be installed in respectively in the active axis hole of the pump housing and pump cover and the driven axis hole and with corresponding axis hole interference fit; Driving shaft is installed in the axis hole of driving shaft left side lining and the right lining of driving shaft; Driven shaft is installed in the axis hole of driven shaft left side lining and the right lining of driven shaft; The position of the close end face of the active axis hole of the pump housing and driven axis hole is equipped with the step to the axis hole central protuberance.
The further technological scheme of the utility model is: the position of the close end face of the active axis hole of pump cover and driven axis hole is equipped with the step to the axis hole central protuberance.
The utility model further technological scheme is: the axial length L a of described each step is one to one. 5 millimeter.
The utility model more further technological scheme be: the aperture Lb of described each step is respectively greater than the aperture Lc of its contiguous lining, each lining respectively step adjacent thereto sidewall near.
The utility model compared with prior art has following characteristics: the ledge structure that the utility model is provided with in the outer end, aperture of the pump housing and pump cover two axis holes, can stop effectively that lining can not deviate from from axis hole, avoid serious accident and the economic loss deviating to cause because of lining; Security, reliability and the working life of oil pump have been improved.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Fig. 1 is the structural representation of existing gear type oil pump;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 be Fig. 2 along the enlarged diagram in the A line scope.
Embodiment
Embodiment is as shown in Figure 2: a kind of step axis hole oil pump, and it comprises the pump housing 1, pump cover 2, driving shaft 3, driving gear 4, driven shaft 5, driven gear 6 and lining; Lining comprises driving shaft left side lining 71, the right lining 72 of driving shaft, the right lining 74 of driven shaft left side lining 73 and driven shaft, lining (71,72,73,74) be installed in respectively in the active axis hole of the pump housing 1 and pump cover 2 and the driven axis hole and with corresponding axis hole interference fit, promptly driving shaft left side lining 71 be installed in the active axis hole of the pump housing 1 and with this axis hole interference fit, the right lining 72 of driving shaft be installed in the active axis hole of pump cover 2 and with this axis hole interference fit, driven shaft left side lining 73 be installed in the driven axis hole of the pump housing 1 and with this axis hole interference fit, the right lining 74 of driven shaft be installed in the driven axis hole of pump cover 2 and with this axis hole interference fit; Driving shaft 3 is installed in the axis hole of driving shaft left side lining 71 and the right lining 72 of driving shaft, and driving shaft 3 middle parts are connected with driving gear 4 interference; Driven shaft 5 is installed in the axis hole of driven shaft left side lining 73 and the right lining 74 of driven shaft, and driven gear 6 interference are connected the middle part of driven shaft 5; Be equipped with protruding step (11 at the active axis hole of the pump housing 1 and pump cover 2 and the position of the close end face of driven axis hole to the axis hole center, 21,12,22), step (11,21,12,22) axial length L a is one to one. 5 millimeter, be La=1-1.5mmm, step (11,21,12,22) aperture Lb is greater than its contiguous lining (71,72,73,74) aperture Lc, be the aperture Lc of the aperture Lb of step 11 greater than lining 71, the aperture of step 21 is greater than the aperture of lining 72, the aperture of step 12 is greater than the aperture of lining 73, the aperture of step 22 is greater than the aperture of lining 74, lining (71,72,73,74) with step (11,21,12,22) sidewall near, step (11,21,12,22) can prevent lining (71,72,73,74) deviate from from the end, promptly step 11 can prevent that lining 71 from deviating from from the end, step 21 can prevent that lining 72 from deviating from from the end, step 12 can prevent that lining 73 from deviating from from the end, step 22 can prevent that lining 74 from deviating from from the end.
The utility model is not limited to above-mentioned concrete structure, so long as just drop within the protection domain of the present utility model near the gear type oil pump that the position of end face is equipped with protruding step to the axis hole center (11,21,12,22) at the active axis hole of the pump housing 1 and pump cover 2 and driven axis hole.
Claims (4)
1. step axis hole oil pump, it comprises the pump housing (1), pump cover (2), driving shaft (3), driving gear (4), driven shaft (5), driven gear (6) and lining; Lining comprises driving shaft left side lining (71), the right lining (72) of driving shaft, driven shaft left side lining (73) and driven shaft right side lining (74), lining (71,72,73,74) be installed in respectively in the active axis hole of the pump housing (1) and pump cover (2) and the driven axis hole and with corresponding axis hole interference fit; Driving shaft (3) is installed in the axis hole of driving shaft left side lining (71) and the right lining of driving shaft (72); Driven shaft (5) is installed in the axis hole of driven shaft left side lining (73) and the right lining of driven shaft (74); It is characterized in that: the position of the close end face of the active axis hole of the pump housing (1) and driven axis hole is equipped with the step (11,12) to the axis hole central protuberance.
2. step axis hole oil pump according to claim 1 is characterized in that: the position of the close end face of the active axis hole of described pump cover (2) and driven axis hole is equipped with the step (21,22) to the axis hole central protuberance.
3. step axis hole oil pump according to claim 2 is characterized in that: described step (11,21,12,22) axial length L a is one to one. 5 millimeter.
4. according to claim 2 or 3 described step axis hole oil pump, it is characterized in that: the aperture Lb of described step (11,21,12,22) is respectively greater than the aperture Lc of its contiguous lining (71,72,73,74), lining (71,72,73,74) respectively step adjacent thereto (11,21,12,22) sidewall near.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202591903U CN201535244U (en) | 2009-11-05 | 2009-11-05 | Oil pump for step axle hole machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202591903U CN201535244U (en) | 2009-11-05 | 2009-11-05 | Oil pump for step axle hole machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535244U true CN201535244U (en) | 2010-07-28 |
Family
ID=42535023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202591903U Expired - Fee Related CN201535244U (en) | 2009-11-05 | 2009-11-05 | Oil pump for step axle hole machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535244U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373166A (en) * | 2018-12-18 | 2019-02-22 | 湖南机油泵股份有限公司 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
| CN110260140A (en) * | 2019-07-17 | 2019-09-20 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump that the lubricating oil convenient for axis leaks |
| CN112240293A (en) * | 2019-07-18 | 2021-01-19 | 肯纳金属公司 | Wear-resistant fluid end |
-
2009
- 2009-11-05 CN CN2009202591903U patent/CN201535244U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373166A (en) * | 2018-12-18 | 2019-02-22 | 湖南机油泵股份有限公司 | A kind of gear type oil pump and rotor-type oil pump being avoided that end wear |
| CN110260140A (en) * | 2019-07-17 | 2019-09-20 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump that the lubricating oil convenient for axis leaks |
| CN112240293A (en) * | 2019-07-18 | 2021-01-19 | 肯纳金属公司 | Wear-resistant fluid end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hengshan Gear Co., Ltd. Assignor: Hunan Oil Pump Co., Ltd. Contract record no.: 2011430000248 Denomination of utility model: Oil pump for step axle hole machine Granted publication date: 20100728 License type: Exclusive License Record date: 20111024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20171105 |