CN203098275U - Cycloid rotor oil pump - Google Patents
Cycloid rotor oil pump Download PDFInfo
- Publication number
- CN203098275U CN203098275U CN 201320046260 CN201320046260U CN203098275U CN 203098275 U CN203098275 U CN 203098275U CN 201320046260 CN201320046260 CN 201320046260 CN 201320046260 U CN201320046260 U CN 201320046260U CN 203098275 U CN203098275 U CN 203098275U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- oil pump
- thrust ball
- ball bearing
- bearing
- 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 cycloid rotor oil pump. The cycloid rotor oil pump comprises an oil pump body, wherein a main shaft which is positioned inside the oil pump body penetrates through a rear end cover on one side of the oil pump body and is movably connected with a thrust ball bearing; a locking nut is sleeved on the main shaft outside the thrust ball bearing; the inner end of the thrust ball bearing is clamped with the outer part of the rear end cover; a separation sleeve is sleeved between the outer end of the thrust ball bearing and the main shaft; a stop washer is sleeved on the main shaft between the separation sleeve and the locking nut; a bearing bush is arranged between the main shaft and the rear end cover; and a pressing cover which covers the end of the main shaft and outside of the thrust ball bearing is fixedly connected with the rear end cover. The cycloid rotor oil pump can limit the axial movement and radial run-out of the main shaft, ensures the normal operation of the main shaft, and is prevented from being blocked; and by adopting the thrust ball bearing, the axis is perpendicular to the bottom surface of a shaft seat, steel ball loads can be uniformly distributed, the possibility of concentrated stress on the bearing is reduced, and the service life of the bearing is prolonged.
Description
Technical field:
The utility model relates to a kind of cycloid rotor oil pump.
Background technique:
The cycloid rotor oil pump is a kind of as displacement pump, with its efficient height, operate steadily and be applied in the existing quite long history of refrigeration industry.For guaranteeing the normal operation of helical-lobe compressor, many manufacturers all are equipped with the cycloid rotor oil pump as its lubricating pump, each lubricant housings during for unit operation provides lubricant oil continuously, and it is the indispensable parts of the normal operation of the freezing unit of screw rod.But also there is following shortcoming in existing cycloid rotor oil pump: can not limit moving axially and circular runout of main shaft, easily cause the outer ring of bearing to come off, cause the cycloid rotor oil pump stuck.In addition, owing to can produce certain thrust load during the work of cycloid rotor oil pump, and existing cycloid rotor oil pump uses angular contact bearing, axis and axle bed bottom surface out of plumb, cause bearing to be vulnerable to concentrated stress, the steel ball load distribution is inhomogeneous, has accelerated the wearing and tearing of bearing, also greatly reduces the working life of oil pump.
The model utility content:
The utility model provides a kind of cycloid rotor oil pump, it is simple in structure, easy to install, can limit moving axially and circular runout of main shaft, guarantees the proper functioning of main shaft, the outer ring that prevents bearing comes off, avoided the stuck of cycloid rotor oil pump, and owing to adopted thrust ball bearing, axis is vertical with the axle bed bottom surface, guaranteed the uniform distribution of steel ball load, reduce the possibility that bearing is subjected to concentrated stress, in the working life of having improved bearing, solved problems of the prior art.
The utility model is to solve the problems of the technologies described above the technological scheme that is adopted to be: it comprises oil pump body, it is characterized in that: the main shaft that is positioned at oil pump body inside passes the rear end cover and the thrust ball bearing flexible connection of oil pump body one side, on the main shaft in the thrust ball bearing outside, be arranged with a locking nut, the outside clamping of the inner of thrust ball bearing and rear end cover, between the outer end of thrust ball bearing and main shaft, be arranged with a spacer, on the main shaft between spacer and the locking nut, be arranged with a lock washer, be provided with a bearing shell between main shaft and rear end cover, a gland and a rear end cover that is located at the spindle nose and the thrust ball bearing outside is connected.
The utility model is simple in structure, easy to install, on main shaft, be provided with locking nut and lock washer, can limit moving axially and circular runout of main shaft, guarantee the proper functioning of main shaft, the outer ring that prevents bearing comes off, and has avoided the stuck of cycloid rotor oil pump.Adopt thrust ball bearing, axis is vertical with the axle bed bottom surface, has guaranteed the uniform distribution of steel ball load, has reduced the possibility that bearing is subjected to concentrated stress, the working life of having improved bearing.A sheathed bearing shell has been avoided the friction between main shaft and the rear end cover between main shaft and rear end cover, thereby has improved the rotating speed of main shaft, has prolonged the operating life of main shaft.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Among the figure, 1, main shaft, 2, rear end cover, 3, bearing shell, 4, gland, 5, thrust ball bearing, 6, spacer, 7, locking nut, 8, lock washer.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in FIG., the utility model comprises oil pump body, the main shaft 1 that is positioned at oil pump body inside passes the rear end cover 2 and a thrust ball bearing 5 flexible connections of oil pump body one side, on the main shaft 1 in thrust ball bearing 5 outsides, be arranged with a locking nut 7, the outside clamping of the inner of thrust ball bearing 5 and rear end cover 2, outer end and 1 on main shaft at thrust ball bearing 5 are arranged with a spacer 6, on the main shaft 1 between spacer 6 and the locking nut 7, be arranged with a lock washer 8, being provided with the gland 4 that a bearing shell 3, is located at main shaft 1 end and thrust ball bearing 5 outsides at main shaft 1 and 2 of rear end covers is connected with rear end cover 2.
The utility model is simple in structure, easy to install, on main shaft 1, be provided with locking nut 7 and lock washer 8, can limit moving axially and circular runout of main shaft 1, guarantee the proper functioning of main shaft 1, the outer ring that prevents bearing comes off, and has avoided the stuck of cycloid rotor oil pump.Adopt thrust ball bearing 5, axis is vertical with the axle bed bottom surface, has guaranteed the uniform distribution of steel ball load, has reduced the possibility that bearing is subjected to concentrated stress, the working life of having improved bearing.At main shaft 1 and 2 sheathed bearing shells 3 of rear end cover, avoid the friction between main shaft 1 and the rear end cover 2, thereby improved the rotating speed of main shaft 1, prolonged the operating life of main shaft 1.
The utility model does not describe part in detail, is those skilled in the art of the present technique's known technology.
Claims (1)
1. cycloid rotor oil pump, comprise oil pump body, it is characterized in that: the main shaft that is positioned at oil pump body inside passes the rear end cover and the thrust ball bearing flexible connection of oil pump body one side, on the main shaft in the thrust ball bearing outside, be arranged with a locking nut, the outside clamping of the inner of thrust ball bearing and rear end cover, between the outer end of thrust ball bearing and main shaft, be arranged with a spacer, on the main shaft between spacer and the locking nut, be arranged with a lock washer, be provided with a bearing shell between main shaft and rear end cover, a gland and a rear end cover that is located at the spindle nose and the thrust ball bearing outside is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320046260 CN203098275U (en) | 2013-01-29 | 2013-01-29 | Cycloid rotor oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320046260 CN203098275U (en) | 2013-01-29 | 2013-01-29 | Cycloid rotor oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098275U true CN203098275U (en) | 2013-07-31 |
Family
ID=48849683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320046260 Expired - Fee Related CN203098275U (en) | 2013-01-29 | 2013-01-29 | Cycloid rotor oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177924A (en) * | 2020-09-30 | 2021-01-05 | 李雪琴 | Axial force bearing mechanism of pump shaft of fracturing pump |
-
2013
- 2013-01-29 CN CN 201320046260 patent/CN203098275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177924A (en) * | 2020-09-30 | 2021-01-05 | 李雪琴 | Axial force bearing mechanism of pump shaft of fracturing pump |
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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: 20130731 Termination date: 20140129 |