CN201391446Y - Gear oil pump - Google Patents
Gear oil pump Download PDFInfo
- Publication number
- CN201391446Y CN201391446Y CN200920171652U CN200920171652U CN201391446Y CN 201391446 Y CN201391446 Y CN 201391446Y CN 200920171652 U CN200920171652 U CN 200920171652U CN 200920171652 U CN200920171652 U CN 200920171652U CN 201391446 Y CN201391446 Y CN 201391446Y
- Authority
- CN
- China
- Prior art keywords
- gear
- floating bearing
- oil pump
- side plate
- gear oil
- 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
The utility model relates to a gear oil pump. A driving gear and a driven gear are sheathed inside a floating bearing in a pump body, and a wear resistant side plate is arranged between the inner side surface of the floating bearing and the driving gear and the driven gear. One side of the wear resistant side plate, with wear resistant material, faces toward the driving gear and the driven gear. The floating bearing is made of aluminum alloy or copper-aluminum alloy. The floating bearing comprises two dismountable parts which are connected through a cylindrical pin. The gear oil pump effectively improves the reliability and service life, without increase of manufacturing cost.
Description
Technical field
The utility model relates to a kind of oil pump structure, be specifically related to a kind of structure of improving the oil pump gear wear-resisting property.
Background technique
The gear oil pump structure that is used on automobile and the engineering machinery on the domestic and international market is contained in the confined space of being made up of the pump housing, front and rear covers, floating bearing by a pair of pitch wheel mostly at present, and oil sucting cavity and pumping cavity are separated.When driving gear rotates, the volume of both sides oil pocket changes, fluid enters oil sucting cavity under the effect of atmospheric pressure, along with gear continues rotation, fluid in the oil sucting cavity is brought to pumping cavity, form pressure oil, so in the rotary course of gear, gear pump has just been realized continuous oil suction and pressed the work cycle of oil.Efficient is one of leading indicator of estimating the gear pump service behaviour.The efficient of gear pump is the product of the volumetric efficiency and the mechanical efficiency of pump.The volumetric efficiency of pump is leaked and three factor affecting of flank of tooth clearance leakage by end face clearance leakage, radial clearance.Because the end clearance leak path is many, oil sealing length is short, and its leakage rate is about the 75-80% of total leakage rate, and the volumetric efficiency that therefore reduces to reveal improving gear pump the end clearance has conclusive effect.The failure mode of gear oil pump is because volumetric efficiency reduces mostly in the market, causes the output flow of oil pump and delivery pressure to reduce, and can not meet design requirement and loses efficacy.Analyzing its failure mechanism is: gear is when high speed rotating, gear both ends of the surface and floating bearing end face produce friction, though floating bearing all adopts expensive bearing material to make, but its wear resistance is not very good, in friction back floating bearing end wear increasing for a long time, cause the end clearance to strengthen, face leakage strengthens, and the volumetric efficiency reduction finally causes oil pump failure.
The model utility content
The utility model has been designed and developed out a kind of effective its reliability of raising gear oil pump and working life at the deficiencies in the prior art, does not need to increase simultaneously the gear oil pump of manufacture cost.
The utility model is achieved through the following technical solutions:
A kind of gear oil pump, driving gear and driven gear are sleeved in the interior floating bearing of the pump housing, are provided with wear-resisting side plate between described floating bearing inner side surface and described driving gear and the driven gear.
A kind of gear oil pump, a side that has high-abrasive material on the described wear-resisting side plate is to described driving gear and driven gear.
A kind of gear oil pump, the material of described floating bearing are aluminum alloy or albronze.
A kind of gear oil pump, its side plate material can be that single material or two kinds of compound high-abrasive materials of material constitute.
A kind of gear oil pump, described floating bearing is made up of removable two-part, and two-part connect by straight pin.
The utility model increases a wear-resisting side plate between gear and floating bearing, utilize the better high-abrasive material of wear resistance to contact with gear face, to alleviate the end wear that causes because of friction, the reliability and the working life of improving gear oil pump.The material of floating bearing is changed to common aluminum alloy by special bearing metal, can reduce the cost of material of floating bearing greatly, be about 50-60%.By above architecture advances, can effectively improve gear oil pump reliability of products and working life not increasing manufacture cost, not changing on the basis of manufacturing process, reduce the Quality Feedback rate, thereby reduce the quality cost of enterprise.Change into the integrated type of floating bearing split type.By improving the technology capability that can improve floating bearing, improve the work efficiency of floating bearing, reduce manufacture cost.
Description of drawings:
Accompanying drawing 1 is a longitudinal sectional drawing.
Accompanying drawing 2: be split type floating bearing structural representation.
Among the figure: 1. driving gear; 2. circlip for hole; 3. outside framework oil seal; 4. protecgulum; 5. straight pin; 6. floating bearing; 7. seal ring; 8. the pump housing; 9. driven gear; 10. rectangular seal; 11. bonnet; 12. bolt; 13. wear-resisting side plate; 14. straight pin.
Embodiment
Shown in accompanying drawing 1.
Shown in accompanying drawing 2.
Floating bearing 6 is made up of removable two-part, and two-part link together by straight pin 14.All the other are with embodiment 1.
Claims (5)
1, a kind of gear oil pump, driving gear and driven gear are sleeved in the interior floating bearing of the pump housing, it is characterized in that being provided with wear-resisting side plate between described floating bearing inner side surface and described driving gear and the driven gear.
2, a kind of gear oil pump according to claim 1 is characterized in that having on the described wear-resisting side plate side of high-abrasive material to described driving gear and driven gear.
3, a kind of gear oil pump according to claim 1 and 2, the material that it is characterized in that described floating bearing is aluminum alloy or albronze.
4, a kind of gear oil pump according to claim 1 and 2 is characterized in that described side plate material can be that single material or two kinds of compound high-abrasive materials of material constitute.
5, a kind of gear oil pump according to claim 1 and 2 is characterized in that described floating bearing is made up of removable two-part, and two-part connect by straight pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920171652U CN201391446Y (en) | 2009-04-14 | 2009-04-14 | Gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920171652U CN201391446Y (en) | 2009-04-14 | 2009-04-14 | Gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391446Y true CN201391446Y (en) | 2010-01-27 |
Family
ID=41598273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920171652U Expired - Fee Related CN201391446Y (en) | 2009-04-14 | 2009-04-14 | Gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391446Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454525A (en) * | 2010-11-04 | 2012-05-16 | 曼柴油机和涡轮机欧洲股份公司 | Roller tappet and roller pin for a roller tappet |
| CN102966537A (en) * | 2012-11-22 | 2013-03-13 | 无锡市东方液压件制造有限公司 | Helical gear oil pump suitable for automobile steering systems |
| CN103486024A (en) * | 2012-06-05 | 2014-01-01 | 哈米尔顿森德斯特兰德公司 | Flow and pressure ripple reduction with advance dual gear and bearing face cut |
-
2009
- 2009-04-14 CN CN200920171652U patent/CN201391446Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454525A (en) * | 2010-11-04 | 2012-05-16 | 曼柴油机和涡轮机欧洲股份公司 | Roller tappet and roller pin for a roller tappet |
| CN103486024A (en) * | 2012-06-05 | 2014-01-01 | 哈米尔顿森德斯特兰德公司 | Flow and pressure ripple reduction with advance dual gear and bearing face cut |
| CN103486024B (en) * | 2012-06-05 | 2017-04-12 | 哈米尔顿森德斯特兰德公司 | Main gear pump, servo gear pump and aircraft using main gear pump and servo gear pump |
| CN102966537A (en) * | 2012-11-22 | 2013-03-13 | 无锡市东方液压件制造有限公司 | Helical gear oil pump suitable for automobile steering systems |
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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: 20100127 Termination date: 20110414 |