CN201041155Y - Low pressure large displacement gear oil pump - Google Patents
Low pressure large displacement gear oil pump Download PDFInfo
- Publication number
- CN201041155Y CN201041155Y CNU2007200123331U CN200720012333U CN201041155Y CN 201041155 Y CN201041155 Y CN 201041155Y CN U2007200123331 U CNU2007200123331 U CN U2007200123331U CN 200720012333 U CN200720012333 U CN 200720012333U CN 201041155 Y CN201041155 Y CN 201041155Y
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- CN
- China
- Prior art keywords
- driving gear
- gear
- oil
- pump
- driven gear
- 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 belongs to a gear oil pump, especially relates to a low pressure and large displacement gear oil pump applied to hydraulic system. The utility model comprises a pump body (1), a front cover (3), a rear cover (2), a driving gear (8) and a driving gear shaft (4). Pairs of oil inlet cavities (9) and oil pressing cavities (12) are uniformly arranged at the same radius of the pump body (1) and the driving gear (8) circle center; a driven gear (10) which is meshed with the driving gear (8) is movably arranged between each pair of the oil inlet cavity (9) and the oil pressing cavity (12); the driven gear (10) and a driven gear shaft (11) are integrated a whole; two ends of the driven gear shaft (11) are movably arranged in the bearings in the front cover (3) and the rear cover (2). The gear oil pump has no radial pressure to the bearing of the driving gear shaft, which enhances the modulus and teeth number of the driving gear, improves the discharge capacity of the pump and the service life as well.
Description
Technical field
The utility model belongs to gear oil pump, the big discharge capacity gear oil pump of particularly a kind of low pressure of using in hydraulic system.
Background technique
At present, the gear pump that in hydraulic system, adopts all be basically by a driving gear and driven gear with outer gearing or the single-acting formula gear pump that constitutes with interior mesh form, delivery pressure is below 20Mpa, discharge capacity is no more than 200ml/rev; Can not adapt to the big hydraulic system needs of discharge capacity; Simultaneously, because its structural feature has determined the bearing generation very big radial force of zone of high pressure to driving gear, so can't improve the gear oil pump performance.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, and the big discharge capacity gear oil pump of low pressure that a kind of discharge capacity is big, the bearing of driving gear shaft do not had radial pressure is provided.
The technological scheme that the utility model technical solution problem adopts is: a kind of big discharge capacity gear oil pump of being made up of the pump housing, protecgulum, bonnet, driving gear and driving gear shaft of low pressure, be characterized on the pump housing, evenly be distributed with a plurality of oil suction chambers and pumping cavity on the same radius in the driving gear center of circle, adorn the ground driven gear that is meshed with driving gear between the every pair of oil suction chamber and the pumping cavity versatilely, driven gear and passive tooth wheel shaft are one, and passive tooth wheel shaft two ends are contained in the bearing in protecgulum and the bonnet versatilely; Driving gear and driving gear shaft are one, and driving gear shaft two ends are contained in the bearing in protecgulum and the bonnet versatilely.
The beneficial effects of the utility model are: this gear oil pump is because oil suction chamber and pumping cavity are evenly to distribute on same radius, thereby the bearing of driving gear shaft there is not radial pressure, thereby, can improve the modulus and the number of teeth of driving gear, thereby improved pump delivery, the working life of also having improved pump simultaneously.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 shows the big discharge capacity gear oil pump of low pressure plan view.
The A-A sectional drawing of Fig. 2 diagrammatic sketch 1.
Among the figure, the 1-pump housing; The 2-bonnet; The 3-protecgulum; The 4-driving gear shaft; The 5-flat key; The 6-filler opening; The 7-oil outlet; The 8-driving gear; The 9-oil suction chamber; The 10-driven gear; 11-passive tooth wheel shaft; The 12-pumping cavity; The 13-locating stud; The 14-clamping bolt; The 15-spill port;
Embodiment
With reference to accompanying drawing 1,2, the big discharge capacity gear oil pump of a kind of low pressure, form by the pump housing 1, protecgulum 3, bonnet 2, driving gear 8 and driving gear shaft 4, be characterized on the same radius in the pump housing 1, driven gear 8 centers of circle, evenly being distributed with three pairs of oil suction chambers 9 and pumping cavity 12, adorning one between the every pair of oil suction chamber 9 and the pumping cavity 12 versatilely is meshed with driving gear 8 with driven gear 10, driven gear 10 is an one with passive tooth wheel shaft 11, and passive tooth wheel shaft 11 two ends are contained in the bearing in protecgulum 3 and the bonnet 2 versatilely; Driving gear 8 is an one with driving gear shaft 4, and driving gear shaft 4 two ends are contained in the bearing in protecgulum 3 and the bonnet 2 versatilely.Flat key 5 is housed on the driving gear shaft 4 and is provided with spill port 15, protecgulum 3 is provided with filler opening 6, is communicated with oil suction chamber 9; Bonnet 2 is provided with oil outlet 7 and is communicated with pumping cavity 12; The pump housing is provided with locating stud 13, and use the location when being used to assemble; Protecgulum 3, the pump housing 1 and bonnet 2 are fixed with clamping bolt 14 respectively and are in the same place.
The working principle of this pump is with common gear oil pump, when driving gear shaft 4 drive driving gears 8 turn clockwise, each driven gear 10 is rotated counterclockwise, driving gear 8 and driven gear 10 contain oil in the tooth paddy from oil suction chamber 9 in rotary course, and bring in the pumping cavity 12, during because of master, driven gear 8,10 engagements, oil in the tooth paddy is shut into high pressure oil, and simultaneously high pressure oil is discharged from the oil outlet 7 that communicates with pumping cavity 12, enters in the high pressure oil system.
Claims (1)
1. big discharge capacity gear oil pump of low pressure, by the pump housing (1), protecgulum (3), bonnet (2), driving gear (8) and driving gear shaft (4) are formed, it is characterized in that in the pump housing (1), evenly be distributed with many on the same radius in driven gear (8) center of circle to oil suction chamber (9) and pumping cavity (12), adorning one between every pair of oil suction chamber (9) and the pumping cavity (12) versatilely is meshed with driving gear (8) with driven gear (10), driven gear (10) and passive tooth wheel shaft (11) are one, and passive tooth wheel shaft (11) two ends are contained in the bearing in protecgulum (3) and the bonnet (2) versatilely; Driving gear (8) and driving gear shaft (4) are one, and driving gear shaft (4) two ends are contained in the bearing in protecgulum (3) and the bonnet (2) versatilely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200123331U CN201041155Y (en) | 2007-05-24 | 2007-05-24 | Low pressure large displacement gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200123331U CN201041155Y (en) | 2007-05-24 | 2007-05-24 | Low pressure large displacement gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041155Y true CN201041155Y (en) | 2008-03-26 |
Family
ID=39252860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200123331U Expired - Fee Related CN201041155Y (en) | 2007-05-24 | 2007-05-24 | Low pressure large displacement gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041155Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912485A (en) * | 2014-04-29 | 2014-07-09 | 郑州机械研究所 | High-flow and low-pulsation gear pump with compact structure |
-
2007
- 2007-05-24 CN CNU2007200123331U patent/CN201041155Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912485A (en) * | 2014-04-29 | 2014-07-09 | 郑州机械研究所 | High-flow and low-pulsation gear pump with compact structure |
| CN103912485B (en) * | 2014-04-29 | 2016-07-13 | 郑州机械研究所 | A kind of big flow low-pulsation gear pump of compact type |
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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: 20080326 Termination date: 20140524 |