CN202926608U - Internal cycloid-engaged gear oil pump - Google Patents
Internal cycloid-engaged gear oil pump Download PDFInfo
- Publication number
- CN202926608U CN202926608U CN 201220625083 CN201220625083U CN202926608U CN 202926608 U CN202926608 U CN 202926608U CN 201220625083 CN201220625083 CN 201220625083 CN 201220625083 U CN201220625083 U CN 201220625083U CN 202926608 U CN202926608 U CN 202926608U
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- oil pump
- rotor
- internal
- cycloid
- transmission shaft
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- Expired - Fee Related
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Abstract
The utility model discloses an internal cycloid-engaged gear oil pump. The internal cycloid-engaged gear oil pump comprises a transmission shaft, a front end cover, a rear cover, an oil inlet, an oil outlet, a inner rotor and an outer rotor, wherein the transmission shaft is horizontally embedded in the front end cover, the transmission shaft is fixedly provided with the inner rotor, the front end cover is in screw joint with the rear cover, the front end cover is internally provided with the outer rotor, and the oil inlet and the oil outlet are fixed on the two sides of the rear cover. The internal cycloid-engaged gear oil pump disclosed by the utility model has the advantages of compact structural dimension and small occupation volume. Compared with the oil pump of the same size, the internal cycloid-engaged gear oil pump has large discharging quantity. According to the internal cycloid-engaged gear oil pump, the abrasion among toothed surfaces of the two rotors is small, the oil flow is stable, the movement is stable, and the noise of the internal cycloid-engaged gear oil pump is obviously lower than that of a gear pump.
Description
Technical field
The utility model relates to mechanical field, relates in particular to a kind of gear oil pump.
Background technique
Domestic at present, common gear pump mostly is greatly external gear pump, and the instantaneous flow of external gear pump becomes with the position of contact points.During apart from maximum, output flow is minimum when contact points; When contact points overlapped with node, output flow was maximum, thereby makes the output flow of gear pump be larger periodic pulsation, thereby affected the stationarity of hydraulic system and cause noise.
Summary of the invention
The purpose of this utility model is that a kind of cycloid internal gear-meshing oil pump will be provided.
According to an aspect of the present utility model, a kind of cycloid internal gear-meshing oil pump is provided, comprise transmission shaft, front cover, bonnet, filler opening, oil outlet, also comprise internal rotor and external rotor, in front cover, level is nested with transmission shaft, is fixed with internal rotor on transmission shaft, and front cover and bonnet are spirally connected, there is external rotor front cover inside, and the both sides of bonnet are fixed with filler opening and oil outlet.
In some embodiments, be provided with seal ring between front cover and bonnet.
In some embodiments, have circlip groove on transmission shaft, back-up ring is arranged in circlip groove, engagement driving gear shaft in forming with internal rotor.
In some embodiments, the many teeth of the number of teeth of the gear ratio internal rotor of external rotor.
In some embodiments, the center of circle, cross section of filler opening and oil outlet is on the same straight line.
A kind of cycloid internal gear-meshing oil pump of the present utility model, physical dimension is compact, takies volume little.Under comparable size, discharge capacity is large.The mutual wearing and tearing of the two rotor flank of tooth are little.Oil stream is more steady, move also more steady, and noise is starkly lower than gear pump.
Description of drawings
Fig. 1 is the sectional drawing of the cycloid internal gear-meshing oil pump of the utility model one mode of execution;
Fig. 2 is the front view of the cycloid internal gear-meshing oil pump of the utility model one mode of execution.
Embodiment
As shown in Fig. 1-2, the utility model discloses a kind of cycloid internal gear-meshing oil pump, comprise transmission shaft 1, front cover 2, bonnet 3, filler opening 4, oil outlet 5, also comprise internal rotor 6 and external rotor 7, in front cover 2, level is nested with transmission shaft 1, is fixed with internal rotor 6 on transmission shaft 1, and front cover 2 is spirally connected with bonnet 3, there is external rotor 7 front cover 2 inside, and the both sides of bonnet 3 are fixed with filler opening 4 and oil outlet 5.In some embodiments, be provided with a seal ring 8 between front cover 2 and bonnet 3, be used for preventing that fluid from overflowing.Have circlip groove on transmission shaft 1, back-up ring 9 is arranged in circlip groove, engagement driving gear shaft in forming with internal rotor 6.Between external rotor 7 and internal rotor 6, throw of eccentric is arranged.The many teeth of the number of teeth of the gear ratio internal rotor 6 of external rotor 7.The center of circle, cross section of filler opening 4 and oil outlet 5 is on the same straight line.A kind of cycloid internal gear-meshing oil pump of the utility model is to utilize the variation of between cog sealed volume to realize the oil suction force feed.External rotor 7 is than internal rotor more than 6 one teeth, and is multiple tooth engagement, so just formed some sealed volume.When transmission shaft 1 drive internal rotor 6 pivoted, internal rotor 6 drove external rotors 7 and makes rotating Vortex.At this moment, by the sealed volume that forms between internal rotor 6 tooth tops and external rotor 7 tooth paddy, along with the rotation of internal rotor 6 with external rotor 7, sealed volume just enlarges gradually, so just formed parital vacuum, fluid enters and is inhaled into sealed volume from filler opening 4, during to internal rotor 6 tooth tops and external rotor 7 tooth paddy position, enclosed volume is maximum, and at this moment oil suction is complete; When internal rotor 6 continues rotation with external rotor 7, the sealed volume that is full of fluid just reduces gradually, fluid is squeezed, then by oil outlet 5, oil is discharged, when all meshing with the mark of mouth of external rotor 7 to another tooth of internal rotor 6, force feed is complete, internal rotor 6 often circles, and by each sealed volume that internal rotor 6 tooth tops and external rotor 7 tooth paddy consist of, completes suction, force feed respectively once, when internal rotor 6 rotates continuously, namely completed the suction oil work of oil pump.
A kind of cycloid internal gear-meshing oil pump of the utility model, the structure that adopts internal rotor 6 and external rotor 7 to be meshed, the number of teeth is few, and physical dimension is compact.Under comparable size, discharge capacity is large, and the gear pump of relatively equal discharge capacity takies volume little.The number of teeth of the gear ratio internal rotor 6 of the external rotor 7 of this oil pump is many teeth only, and when they did relative movement, flank of tooth Sliding velocity was little, and contact points moves in the flank profil along inner and outer Rotator constantly, and therefore, the mutual wearing and tearing of the two rotor flank of tooth are little.Oil suction and oil extraction time are all more abundant, and therefore, oil stream is more steady, move also more steady, and noise is starkly lower than gear pump.
Claims (5)
1. cycloid internal gear-meshing oil pump, comprise transmission shaft, front cover, bonnet, filler opening, oil outlet, it is characterized in that, also comprise internal rotor and external rotor, in described front cover, level is nested with transmission shaft, is fixed with internal rotor on described transmission shaft, and described front cover and bonnet are spirally connected, there is external rotor described front cover inside, and the both sides of described bonnet are fixed with filler opening and oil outlet.
2. a kind of cycloid internal gear-meshing oil pump according to claim 1, is characterized in that, is provided with seal ring between described front cover and bonnet.
3. a kind of cycloid internal gear-meshing oil pump according to claim 1, is characterized in that, have circlip groove on described transmission shaft, back-up ring is arranged in circlip groove, engagement driving gear shaft in forming with internal rotor.
4. a kind of cycloid internal gear-meshing oil pump according to claim 1, is characterized in that, the many teeth of the number of teeth of the gear ratio internal rotor of described external rotor.
5. a kind of cycloid internal gear-meshing oil pump according to claim 1, is characterized in that, the center of circle, cross section of described filler opening and oil outlet is on the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625083 CN202926608U (en) | 2012-11-22 | 2012-11-22 | Internal cycloid-engaged gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625083 CN202926608U (en) | 2012-11-22 | 2012-11-22 | Internal cycloid-engaged gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926608U true CN202926608U (en) | 2013-05-08 |
Family
ID=48216577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220625083 Expired - Fee Related CN202926608U (en) | 2012-11-22 | 2012-11-22 | Internal cycloid-engaged gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926608U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966536A (en) * | 2012-11-22 | 2013-03-13 | 无锡市东方液压件制造有限公司 | Cycloid internal gear oil pump |
| CN113404851A (en) * | 2021-06-10 | 2021-09-17 | 西安法士特汽车传动有限公司 | Transmission lubricating and lubricating medium filtering system and method |
-
2012
- 2012-11-22 CN CN 201220625083 patent/CN202926608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966536A (en) * | 2012-11-22 | 2013-03-13 | 无锡市东方液压件制造有限公司 | Cycloid internal gear oil pump |
| CN113404851A (en) * | 2021-06-10 | 2021-09-17 | 西安法士特汽车传动有限公司 | Transmission lubricating and lubricating medium filtering system and method |
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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: 20130508 Termination date: 20131122 |