CN202074217U - Oil pump of diesel engine - Google Patents
Oil pump of diesel engine Download PDFInfo
- Publication number
- CN202074217U CN202074217U CN2011201647824U CN201120164782U CN202074217U CN 202074217 U CN202074217 U CN 202074217U CN 2011201647824 U CN2011201647824 U CN 2011201647824U CN 201120164782 U CN201120164782 U CN 201120164782U CN 202074217 U CN202074217 U CN 202074217U
- Authority
- CN
- China
- Prior art keywords
- oil pump
- rotor shaft
- sprocket wheel
- cross key
- diesel engine
- 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
Links
- 239000010710 diesel engine oil Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 21
- 238000005461 lubrication Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model discloses an oil pump of a diesel engine, which comprises an inner rotor, a rotor shaft and a sprocket wheel. A cross key is arranged at one end of the rotor shaft, the rotor shaft is connected with the sprocket wheel via the cross key, and a holding groove matched with the cross key is arranged on the sprocket wheel. According to the technical scheme, the oil pump of the diesel engine has the advantages that the friction torque and the transmission torque are increased, the reliability and safety in connection of the rotor shaft and the sprocket wheel of the oil pump are guaranteed, the reliability in matching of the rotor shaft and the sprocket wheel of the oil pump when the engine is in large-torque transmission is guaranteed effectively, the reliability in operation of the oil pump is improved, the service lives of the rotor shaft and the oil pump are prolonged, and further, the oil pump is simple in structure and convenient in mounting, dismounting and maintenance.
Description
Technical field
The utility model relates to diesel engine, and specifically, the utility model relates to a kind of diesel engine oil pump.
Background technique
Oil pump is one of most crucial component of engine lubrication system; in whole engine lubrication system, has conclusive effect; it provides the machine oil of enough pressure and flow for whole motor; make lubricant oil in lubrication system, constantly circulate; lubricated fully to guarantee that each friction member obtains, the pressure part that protection is relevant is not damaged.
The layout of diesel engine lubrication system oil pump mainly contains by the direct driving of bent axle with by two kinds of structures of chain transmission at present.The structure that adopts bent axle directly to drive, because oil pump is arranged in the cylinder body outside, not only higher to the sealing requirement, directly be connected with bent axle owing to oil pump simultaneously, exist to drive shortcomings such as area is big, the engine friction horsepower loss is bigger, tend to chain-driven gradually so oil pump is arranged.Present chain-driven oil pump mainly is processing one a flat square structure on the rotor of engine oil pump axle, be provided with a rectangular block in the end of rotor shaft, rotor shaft is connected with sprocket wheel by this rectangular block, sprocket wheel directly cooperates with rotor shaft, but when the torque that transmits is big, oil pump work is unreliable, be easy to cause skidding of oil pump sprocket wheel and rotor shaft, cause the oil pump chain to be easy to stuck or sprocket wheel idle running, make that each bearing of motor can not proper lubrication, seriously can directly cause the Bearing score of motor, even cause scrapping of whole motor.
The model utility content
Technical problem to be solved in the utility model provides the high diesel engine oil pump of a kind of functional reliability, and especially when the motor driving torque was big, oil pump was still working properly.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of diesel engine oil pump, comprise internal rotor, rotor shaft and sprocket wheel, be provided with a cross key in the end of described rotor shaft, described rotor shaft is connected with described sprocket wheel by described cross key, is provided with a standing groove that matches with described cross key on described sprocket wheel.
Be provided with a rectangular block in the end that described rotor shaft is connected with sprocket wheel, described cross key is socketed on the described rectangular block, is provided with a rectangle groove that matches with described rectangular block on described cross key.
Described rotor shaft and described internal rotor interference fit.
Described cross key embeds in the described standing groove fully.
The utility model adopts technique scheme, by increasing a cross key, adopt embedded mode and sprocket wheel to link together, improved friction torque and driving torque, guaranteed reliability, Security that rotor shaft is connected with the oil pump sprocket wheel, when property has guaranteed that the motor high pulling torque transmits effectively, the reliable fit of rotor of engine oil pump axle and sprocket wheel has improved the oil pump functional reliability, and has prolonged the working life of rotor shaft and oil pump, simple in structure, dismounting is safeguarded all very convenient.
Description of drawings
Fig. 1 is the utility model decomposing schematic representation;
Fig. 2 is the schematic top plan view of the utility model oil pump;
Fig. 3 is an A-A cross-sectional schematic among Fig. 2;
Fig. 4 is a B-B cross-sectional schematic among Fig. 2;
Fig. 5 is a C-C cross-sectional schematic among Fig. 4;
Mark among the above-mentioned figure is: 1, oil pump body; 2, cross key; 3, sprocket wheel; 4, external rotor; 5, internal rotor; 6, rotor shaft; 7, rectangular block.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, be the structural representation of a kind of diesel engine oil pump of the utility model.The utility model is a rotor-type oil pump, mainly is made up of oil pump body 1, sprocket wheel 3, internal rotor 5, external rotor 4 and rotor shaft 6 etc.For guaranteeing when the torque that transmits is big, oil pump sprocket wheel 3 can not skid with rotor shaft 6, connect by increasing a cross key 2 simultaneously, cross key 2 is located at the end that rotor shaft 6 is connected with sprocket wheel 3, the end of rotor shaft 6 is provided with a rectangular block 7, be positioned at the center, end of rotor shaft 6, the end that forms rotor shaft 6 is the flat square structure of symmetry, cross key 2 is socketed on this rectangular block 7, on cross key 2, be provided with a rectangle groove that matches with rectangular block 7, rotor shaft 6 is connected with sprocket wheel 3 by cross key 2, is provided with a standing groove that matches with cross key 2 on sprocket wheel 3, and cross key 2 embeds in this standing groove fully.Adopt this structure, by increasing a cross key 2, adopt embedded mode and sprocket wheel 3 to link together, improved friction torque and driving torque, guaranteed reliability, Security that rotor shaft 6 is connected with sprocket wheel 3, when property has guaranteed that the motor high pulling torque transmits effectively, the reliable fit of rotor of engine oil pump axle 6 and sprocket wheel 3 has improved the reliability of oil pump work, especially when the motor driving torque is big, oil pump is still working properly.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (4)
1. diesel engine oil pump, comprise internal rotor (5), rotor shaft (6) and sprocket wheel (3), it is characterized in that: be provided with a cross key (2) in the end of described rotor shaft (6), described rotor shaft (6) is connected with described sprocket wheel (3) by described cross key (2), is provided with a standing groove that matches with described cross key (2) on described sprocket wheel (3).
2. diesel engine oil pump according to claim 1, it is characterized in that: the end that is connected with sprocket wheel (3) at described rotor shaft (6) is provided with a rectangular block (7), described cross key (2) is socketed on the described rectangular block (7), is provided with a rectangle groove that matches with described rectangular block (7) on described cross key (2).
3. diesel engine oil pump according to claim 1 and 2 is characterized in that: described rotor shaft (6) and described internal rotor (5) interference fit.
4. diesel engine oil pump according to claim 3 is characterized in that: described cross key (2) embeds in the described standing groove fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201647824U CN202074217U (en) | 2011-05-23 | 2011-05-23 | Oil pump of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201647824U CN202074217U (en) | 2011-05-23 | 2011-05-23 | Oil pump of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202074217U true CN202074217U (en) | 2011-12-14 |
Family
ID=45112320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201647824U Expired - Lifetime CN202074217U (en) | 2011-05-23 | 2011-05-23 | Oil pump of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202074217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997022A (en) * | 2012-11-23 | 2013-03-27 | 奇瑞汽车股份有限公司 | Self-lubricating structure of oil pump |
-
2011
- 2011-05-23 CN CN2011201647824U patent/CN202074217U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997022A (en) * | 2012-11-23 | 2013-03-27 | 奇瑞汽车股份有限公司 | Self-lubricating structure of oil pump |
| CN102997022B (en) * | 2012-11-23 | 2015-06-10 | 奇瑞汽车股份有限公司 | Self-lubricating structure of oil 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |