CN101349267A - Engine oil pump - Google Patents
Engine oil pump Download PDFInfo
- Publication number
- CN101349267A CN101349267A CNA2007101355792A CN200710135579A CN101349267A CN 101349267 A CN101349267 A CN 101349267A CN A2007101355792 A CNA2007101355792 A CN A2007101355792A CN 200710135579 A CN200710135579 A CN 200710135579A CN 101349267 A CN101349267 A CN 101349267A
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- CN
- China
- Prior art keywords
- gear
- housing
- axle sleeve
- oil pump
- pump 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.)
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Abstract
The invention discloses an engine oil pump, which comprises a casing, a gear and a pump shaft, wherein a center hole of the gear is penetrated by the pump shaft, the casing is equipped with a hole for penetrating the pump shaft, the engine oil pump further comprises a shaft sleeve, one end of the shaft sleeve is equipped with a step, the shaft sleeve is arranged in the hole for penetrating the pump shaft of the casing, the step of the shaft sleeve is located on the inner side of the casing, and two ends of the center hole of the gear are equipped with recessed portions which are engaged with the step of the shaft sleeve. The engine oil pump not only can prevent leaking, but also can reduce wear of the gear to parts of the casing of the engine oil pump, and prolonging the service life of the casing.
Description
Technical field
The present invention relates to a kind of pump, particularly a kind of oil pump.
Background technique
Employed oil pump in the existing engineering machinery, it mainly comprises housing, gear, pump shaft, and gear is arranged on the pump shaft, and pump shaft is installed on the housing.Gear in the oil pump is in course of working, because its end face is the plane, when this plane of grinding, interfere because of gear teeth portion, often protrude easily in end near gear center hole, male structure in the formation, this causes leakage on the one hand easily, and the high speed rotating of gear also causes enhance faster wear to the local housing of the oil pump of its corresponding part during on the other hand because of work, and this has influenced the working life of housing greatly.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of oil pump, and it not only can prevent to leak, and can reduce the wearing and tearing of the local housing of gear mesh oil pump, prolongs the working life of housing.
For solving the problems of the technologies described above, a kind of oil pump of the present invention, it contains housing, gear, pump shaft, the center hole of gear is installed on the pump shaft, housing is provided with the hole that installs pump shaft, also contains axle sleeve, and an end of this axle sleeve is provided with step, axle sleeve is arranged in the hole that described housing installs pump shaft and its step is positioned at the inboard of housing, and the two ends of described gear center hole are provided with the recess that matches with the axle sleeve step.
Owing to being provided with the inboard that axle sleeve with the level and its step are positioned at housing in the hole that installs pump shaft at housing, the gear of high speed rotating only contacts with axle sleeve during work, and does not directly contact with housing, has prolonged the working life of housing so greatly; Because the two ends of gear center hole are provided with the recess that matches with axle sleeve one end step, this has not only eliminated the middle male structure that forms near the gear center hole end in the prior art, and because of having eliminated male structure in this, has also effectively prevented the generation of leakage phenomenon.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
1. pump shafts among the figure, 2. axle sleeve, 3. housing, 4. gear.
Embodiment
In the accompanying drawing, oil pump contains housing 3, gear 4, pump shaft 1 and axle sleeve 2.The center hole of gear 4 is installed on the pump shaft 1, and the fit between them can be fixed on gear 4 on the pump shaft 1 by the mode of hot charging.Housing 3 is provided with the hole that installs pump shaft 1.Axle sleeve 2 is a tubular structure, and an end of axle sleeve 2 is provided with step.Axle sleeve 2 is arranged in the hole that housing 3 installs pump shaft 1, and the step of axle sleeve 2 is positioned at the inboard of housing 3.Axle sleeve 2 can be by the mode of hot charging, and axle sleeve 2 is fixed in the hole that installs pump shaft 1 that housing 3 is provided with.The center hole two ends of gear 4 are provided with the recess that matches with axle sleeve 2 steps.In the present invention, owing to install in the hole of pump shaft 1 at housing 3, be provided with axle sleeve 2 with the level, and step is positioned at the inboard of housing 3, and when work, the gear 4 of high speed rotating only contacts with axle sleeve 2, and directly do not contact with housing 3, after axle sleeve 2 wearing and tearing do not reach due precision, only need this is changed, prolonged the working life of housing 3 so greatly.Because the two ends of the center hole of gear 4 are provided with the recess that matches with axle sleeve 2 one end steps, this has eliminated the middle male structure that forms near gear 4 central hole in the prior art, because of there not being male structure in this, has also effectively prevented the generation of leakage phenomenon simultaneously.
Claims (1)
1. oil pump, it contains housing, gear, pump shaft, the center hole of gear is installed on the pump shaft, housing is provided with the hole that installs pump shaft, it is characterized in that: also contain axle sleeve, one end of this axle sleeve is provided with step, and axle sleeve is arranged in the hole that described housing installs pump shaft and its step is positioned at the inboard of housing, and the two ends of described gear center hole are provided with the recess that matches with the axle sleeve step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710135579A CN100578017C (en) | 2007-11-16 | 2007-11-16 | Engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710135579A CN100578017C (en) | 2007-11-16 | 2007-11-16 | Engine oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101349267A true CN101349267A (en) | 2009-01-21 |
| CN100578017C CN100578017C (en) | 2010-01-06 |
Family
ID=40268191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710135579A Active CN100578017C (en) | 2007-11-16 | 2007-11-16 | Engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100578017C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953986A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Oil pump |
-
2007
- 2007-11-16 CN CN200710135579A patent/CN100578017C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953986A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Oil pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100578017C (en) | 2010-01-06 |
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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 | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU CHI XIANG PRECISION GEAR CO., LTD. Free format text: FORMER NAME: JIANGSU CHIXIANG PRECISION GEAR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 224015 Zhang Zhuang Industrial Park, western suburbs of Jiangsu, Yancheng City Patentee after: JIANGSU CHIXIANG PRECISION GEAR CO., LTD. Address before: 224015 Zhang Zhuang Industrial Park, western suburbs of Jiangsu, Yancheng City Patentee before: Jiangsu Chixiang Precision Gears Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 224015 Zhang Zhuang Industrial Park, western suburbs of Jiangsu, Yancheng City Patentee after: Jiangsu Sheng an Tiomin Resources Inc Address before: 224015 Zhang Zhuang Industrial Park, western suburbs of Jiangsu, Yancheng City Patentee before: JIANGSU CHIXIANG PRECISION GEAR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: No.68 Yanxing Road, Yandu District, Yancheng City, Jiangsu Province Patentee after: Jiangsu Sheng'an transmission Co., Ltd Address before: 224015 Zhang Zhuang Industrial Park, western suburbs of Jiangsu, Yancheng City Patentee before: JIANGSU SHENG'AN RESOURCES Co.,Ltd. |
|
| CP03 | Change of name, title or address |