CN201121579Y - Oil pump of balancing oil scouring machine - Google Patents
Oil pump of balancing oil scouring machine Download PDFInfo
- Publication number
- CN201121579Y CN201121579Y CNU2007200646955U CN200720064695U CN201121579Y CN 201121579 Y CN201121579 Y CN 201121579Y CN U2007200646955 U CNU2007200646955 U CN U2007200646955U CN 200720064695 U CN200720064695 U CN 200720064695U CN 201121579 Y CN201121579 Y CN 201121579Y
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- CN
- China
- Prior art keywords
- steel back
- pump
- oil
- 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 - Lifetime
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Abstract
The utility model relates to an oil pump of a balanced oil tank, which comprises a pump body (1), a pump cover (2), a driven shaft (3), a driven gear (4), a drive shaft (5), a driving gear (6) and steel back bushes (7). The drive shaft (5) is arranged in an axle hole of the pump body (1) and the pump cover (2), and the middle part of the drive shaft is in interference connection with the drive gear (6); the outer end of the driven shaft (3) is in interference connection with the pump cover (2), and the inner end is arranged in the axle hole of the pump body (1); the driven gear (4) is sleeved at the middle part of the driven shaft (3) through two steel back bushes (7); the directions of the balanced oil tanks (71)arranged on the inner surfaces of the two steel back bushes (7) are opposite to each other. For the oil pump provided by the utility model, the driven gear (4) is sleeved at the middle part of the driven shaft (3) through the two steel back bushes (7), and the inner surfaces of the steel back bushes (7) are provided with balanced oil tanks (71) with opposite directions, an inward thrust is generated when the steel back bushes (7) rotate, and the thrust can keep balance with an outward thrust of the inner pressure of a middle oil storage tank, thereby preventing the surface of the pump cover from being scraped and the abrasion of the axle hole end, and improving the security, the reliability and the service life of the oil pump.
Description
Technical field
The utility model relates to a kind of gear type oil pump, particularly a kind of equilibrium oil scouring machine oil pump.
Background technique
The structure of existing gear type oil pump as shown in Figure 1, it comprises the pump housing 1, pump cover 2, driven shaft 3, driven gear 4, driving shaft 5 and driving gear 6; Driven shaft 3 outer ends and pump cover 2 are for interference is connected, and the inner is installed in the axis hole of the pump housing 1, and driven gear 4 directly is sleeved on the middle part of driven shaft 3; Driving shaft 5 is installed in the axis hole of the pump housing 1 and pump cover 2, and its middle part is connected with driving gear 6 interference.Its deficiency is: because driven gear 4 is the middle parts that directly are sleeved on driven shaft 3, because of matching gap little, and oilhole is distributed on the line in middle part, two ends are easy to generate dry friction, particularly the coefficient of congeniality material direct friction is big, easily produce affinity interaction and phenomenon is burnt in interlock to death, cause serious Accident due to quality and economic loss.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency that overcomes on the prior art, and provide a kind of equilibrium oil scouring machine oil pump, because of congeniality material direct friction produces affinity interaction the problem that phenomenon is burnt in interlock to death takes place to solve driven gear and driven shaft, improve greasy property, improve the stability and the reliability of driven gear motion, improve the Security and the working life of oil pump.
The technical solution of the utility model is: a kind of equilibrium oil scouring machine oil pump, and it comprises the pump housing, pump cover, driven shaft, driven gear, driving shaft, driving gear and steel back lining; Driving shaft is installed in the axis hole of the pump housing and pump cover, and its middle part is connected with the driving gear interference; The driven shaft outer end is that interference is connected with pump cover, and the inner is installed in the axis hole of the pump housing, and driven gear is sleeved on the middle part of driven shaft by steel back lining.
The further technological scheme of the utility model is: driven gear is sleeved on the middle part of driven shaft by two steel back linings, and promptly a steel back lining that can prevent outside play respectively is equipped with at the two ends in the axis hole of driven gear.
The further again technological scheme of the utility model is: the internal surface of two steel back linings is provided with the balance oil groove.
The utility model further technological scheme is: the direction of the balance oil groove of two steel back lining internal surfaces is opposite.
The utility model is owing to adopt the steel back lining that is provided with the balance oil groove, the surface tension and the axial force that prevents outside play of steel back lining have been improved, the frictional force between steel back lining and the gear hole and the stability of assembling have been improved, the direction of the balance oil groove that two steel back linings are set is opposite, can make steel back lining produce inside thrust when rotated, with the extrapolated weighing apparatus that maintains an equal level of trying hard to keep of the oil storage tank internal pressure oil of centre, prevented that the pump cover face is by scratch and the wearing and tearing of axis hole end, improved the Security of oil pump, reliability and working life.
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 is the structural representation of the utility model driven gear and lining.
Embodiment
As shown in Figure 2, a kind of equilibrium oil scouring machine oil pump, it comprises the pump housing 1, pump cover 2, driven shaft 3, driven gear 4, driving shaft 5, driving gear 6 and steel back lining 7; Driven shaft 3 outer ends are connected for interference with pump cover 2, the inner is installed in the axis hole of the pump housing 1, the steel back lining 7 that driven gear 4 is provided with balance oil groove 71 by two internal surfaces is sleeved on the middle part of driven shaft 3, a steel back lining that is provided with balance oil groove 71 7 that can prevent outside play respectively is equipped with at the interior two ends of axis hole that are driven gear 4, the direction of the balance oil groove 71 that the internal surface of two steel back linings 7 is set opposite (as shown in Figure 3), can make steel back lining 7 produce inside thrust when rotated, with the extrapolated weighing apparatus that maintains an equal level of trying hard to keep of the oil storage tank internal pressure oil of centre, prevented that the pump cover face is by scratch and the wearing and tearing of axis hole end; Driving shaft 5 is installed in the axis hole of the pump housing 1 and pump cover 2, and its middle part is connected with driving gear 6 interference.
Claims (4)
1. equilibrium oil scouring machine oil pump, it comprises the pump housing, pump cover, driven shaft, driven gear, driving shaft, driving gear and steel back lining; Driving shaft is installed in the axis hole of the pump housing and pump cover, and its middle part is connected with the driving gear interference; The driven shaft outer end is that interference is connected with pump cover, and the inner is installed in the axis hole of the pump housing, it is characterized in that driven gear is sleeved on the middle part of driven shaft by steel back lining.
2. equilibrium oil scouring machine oil pump according to claim 1 is characterized in that driven gear is sleeved on the middle part of driven shaft by two steel back linings, and promptly a steel back lining that can prevent outside play respectively is equipped with at the two ends in the axis hole of driven gear.
3. equilibrium oil scouring machine oil pump according to claim 1 and 2 is characterized in that the internal surface of steel back lining is provided with the balance oil groove.
4. equilibrium oil scouring machine oil pump according to claim 3 is characterized in that the direction of balance oil groove of steel back lining internal surface is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200646955U CN201121579Y (en) | 2007-10-10 | 2007-10-10 | Oil pump of balancing oil scouring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200646955U CN201121579Y (en) | 2007-10-10 | 2007-10-10 | Oil pump of balancing oil scouring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121579Y true CN201121579Y (en) | 2008-09-24 |
Family
ID=40008805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200646955U Expired - Lifetime CN201121579Y (en) | 2007-10-10 | 2007-10-10 | Oil pump of balancing oil scouring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121579Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016939A (en) * | 2011-09-28 | 2013-04-03 | 上海乾通汽车附件有限公司 | Involute gear for oil pump assemblies of gasoline engines |
| CN108443457A (en) * | 2018-03-06 | 2018-08-24 | 广西玉柴机器股份有限公司 | Hydraulic pump idle gear component |
-
2007
- 2007-10-10 CN CNU2007200646955U patent/CN201121579Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016939A (en) * | 2011-09-28 | 2013-04-03 | 上海乾通汽车附件有限公司 | Involute gear for oil pump assemblies of gasoline engines |
| CN108443457A (en) * | 2018-03-06 | 2018-08-24 | 广西玉柴机器股份有限公司 | Hydraulic pump idle gear component |
| CN108443457B (en) * | 2018-03-06 | 2024-01-26 | 广西玉柴机器股份有限公司 | Idler gear assembly of hydraulic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080924 |
|
| CX01 | Expiry of patent term |