CN220210165U - Generator with rotating shaft capable of axially moving - Google Patents
Generator with rotating shaft capable of axially moving Download PDFInfo
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- CN220210165U CN220210165U CN202321805874.5U CN202321805874U CN220210165U CN 220210165 U CN220210165 U CN 220210165U CN 202321805874 U CN202321805874 U CN 202321805874U CN 220210165 U CN220210165 U CN 220210165U
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- rotating shaft
- bearing
- shaft
- end cover
- generator
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- 239000003921 oil Substances 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 19
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 210000002445 nipple Anatomy 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model belongs to the technical field of generators, and in particular relates to a generator with a rotating shaft capable of axially moving, which comprises a shell, wherein the rotating shaft is arranged in the shell, and the generator is characterized in that: the front end of the shell is fixedly connected with a front end cover, the rear end of the shell is fixedly connected with a rear end cover, the shaft extension end of the rotating shaft is rotationally connected to the front end cover through a front bearing, the non-shaft extension end is rotationally connected to the rear end cover through a rear bearing, the rear bearing is an axially movable bearing, and an axially movable space is reserved between the rear end of the rotating shaft and the rear end cover. According to the utility model, the rear end of the rotating shaft of the generator is in an axially movable state, so that when the rotating shaft expands axially due to overheating of the generator, the rear bearing inner ring can move axially along with the rotating shaft without affecting the running fit between the rear bearing inner ring and the rear bearing outer ring, and a good bearing function can be realized, thereby compensating the thermal expansion of the rotating shaft and improving the overall stability of the generator.
Description
Technical Field
The utility model belongs to the technical field of generators, and particularly relates to a generator with a rotating shaft capable of axially moving.
Background
In the working process of the generator, a large amount of heat can be generated when the internal coil of the generator is electrified, and under the natural law of thermal expansion and cold contraction, the rotating shaft can axially expand after being heated, when the temperature of the generator is too high, and when the rotating shaft is obviously axially expanded, axial deviation can be generated on parts such as a bearing connected with the rotating shaft, the existing bearing mounting mode and the generator structure hardly meet the axial expansion of the rotating shaft in a heated state, abnormal sound can be caused on the bearing, and even the outer ring and the inner ring of the bearing are separated from each other, so that the overall stability of the generator is influenced.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the generator with the rotating shaft capable of axially moving, wherein the rotating shaft can axially move relative to the shell, so that the thermal expansion is compensated, and the overall stability of the generator is improved.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a pivot can axial displacement's generator, includes the casing, installs the pivot in the casing, its characterized in that: the front end of the shell is fixedly connected with a front end cover, the rear end of the shell is fixedly connected with a rear end cover, the shaft extension end of the rotating shaft is rotationally connected to the front end cover through a front bearing, the non-shaft extension end is rotationally connected to the rear end cover through a rear bearing, the rear bearing is an axially movable bearing, and an axially movable space is reserved between the rear end of the rotating shaft and the rear end cover.
Further, the inner side of the rear end cover is fixedly connected with a brush frame, the brush frame is provided with a brush, a sliding ring corresponding to the brush is fixedly arranged on the rotating shaft, the rear end of the brush frame is provided with a rear oil seal groove coaxial with the rotating shaft, and a rear oil seal is fixedly arranged in the rear oil seal groove.
Further, a rear shaft sleeve is fixed on the rotating shaft in front of the rear bearing, and a rear oil jacket is arranged on the rear shaft sleeve.
Further, the shell is provided with a wire outlet hole corresponding to the electric brush.
Further, a bearing seat is arranged on the front end cover, the front bearing is installed in the bearing seat, an inner end cover is fixedly connected to the inner side of the bearing seat, a front bearing cavity is defined by the bearing seat and the inner end cover, a lubricating oil channel is formed in the front end cover, one end of the lubricating oil channel is fixedly connected with a nipple, and the other end of the lubricating oil channel is communicated with the front bearing cavity.
Further, a front oil seal groove coaxial with the rotating shaft is formed in a front end cover in front of the bearing seat, and a front oil seal is fixedly arranged in the front oil seal groove.
Further, a front shaft sleeve is fixedly arranged on the rotating shaft in front of the front bearing, and a front oil jacket is arranged on the front shaft sleeve.
Further, a sealing groove is formed in the inner end cover, a sealing ring is arranged in the sealing groove, and the sealing ring is sleeved on the rotating shaft.
Further, a shaft groove coaxial with the rotating shaft is formed in the inner side of the rear end cover, the diameter of the shaft groove is larger than that of the rear end of the rotating shaft, and the front end face of the shaft groove is located behind the rear end face of the rotating shaft.
Further, the axially movable bearing is a flange-free cylindrical roller bearing.
Compared with the prior art, the utility model has the beneficial effects that:
1. because the rear bearing of the generator is an axially movable bearing, the non-bearing end of the rotating shaft of the generator is in an axially movable state, so that when the rotating shaft expands axially due to overheating of the generator, the rear bearing inner ring can move axially along with the rotating shaft without affecting the running fit between the rear bearing inner ring and the rear bearing outer ring, and a good bearing function can be realized, so that the thermal expansion of the rotating shaft is compensated; because the axial space is arranged between the rear end of the rotating shaft and the rear end cover, the rotating shaft has enough axial movement space when being heated, the rear end of the rotating shaft is kept in an axial floating state, and the normal operation of the rotating shaft is ensured.
2. Because the brush holder is fixedly connected with the inner side of the rear end cover, the rear end of the brush holder is provided with a rear oil seal groove coaxial with the rotating shaft, a rear oil seal is fixedly arranged in the rear oil seal groove, and the rear oil seal can isolate the brush slip ring combination from the rear bearing, so that the pollution of carbon powder falling off by the brush in the working process to the rear bearing is avoided, and the normal operation of the rear bearing is ensured.
3. Because the rear oil jacket is arranged on the rear shaft sleeve, the front oil jacket is arranged on the front shaft sleeve, and the shaft sleeve can ensure the reliability and the tightness of the connection between the oil seal and the rotating shaft.
4. Because the bearing pedestal on the front end cover and the inner end cover enclose a front bearing cavity, the front end cover is provided with a lubricating oil channel, one end of the lubricating oil channel is fixedly connected with a nozzle tip, and the other end of the lubricating oil channel is communicated with the front bearing cavity, so that lubricating oil can enter the front bearing cavity through the lubricating oil channel to lubricate the front bearing, and the normal and smooth operation of the front bearing is ensured.
5. Because the inner end cover is provided with the sealing groove, the sealing ring is arranged in the sealing groove, and the sealing ring can isolate the front bearing cavity from the inside of the shell, so that the lubricating oil in the front bearing cavity is prevented from flowing into the inside of the shell to influence the normal operation of the generator.
6. Because the inside of the rear end cover is provided with the shaft groove coaxial with the rotating shaft, the diameter of the shaft groove is larger than that of the rear end of the rotating shaft, so that the rear end of the rotating shaft has sufficient axial movement space, the rotating shaft can be further ensured to smoothly move along the axial direction after being heated and expanded, friction and abnormal sound between the rotating shaft and the rear end cover are avoided, and the overall stability of the generator is improved.
7. The utility model can make the rotating shaft move along the axial direction to compensate the heat expansion of the rotating shaft through simple structural improvement, ensures the stable and reliable operation of the generator, and is worth popularizing and applying in industry.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an enlarged schematic view of the structure of the section I in fig. 1.
Marked in the figure as:
1. a housing; 10. a rotating shaft; 11. an impeller; 12. a wire outlet hole; 2. a front end cover; 20. a lubrication oil passage; 3. a rear end cover; 30. a shaft groove; 4. a front bearing; 41. a front oil seal; 42. a front sleeve; 5. a rear bearing; 51. a rear oil seal; 52. a rear sleeve; 6. a brush holder; 61. a brush; 62. a slip ring; 7. an inner end cap; 70. a front bearing cavity; 8. a nipple; 9. and (3) sealing rings.
Detailed Description
When the utility model is in a working state, the direction along the axial direction of the generator, which is close to the shaft extending end of the generator, is defined as the front, and the direction along the axial direction, which is far from the shaft extending end of the generator, is defined as the rear.
The utility model is further described below with reference to the accompanying examples:
as shown in fig. 1 and 2, the utility model provides a generator with a rotating shaft capable of moving along an axial direction, wherein the front end of a casing 1 is fixedly connected with a front end cover 2, the rear end of the casing 1 is fixedly connected with a rear end cover 3, a rotating shaft 10 is arranged in the casing 1, the shaft extension end of the rotating shaft 10 is rotationally connected to the front end cover 2 through a front bearing 4, the non-shaft extension end is rotationally connected to the rear end cover 3 through a rear bearing 5, and the rear bearing 5 is an axially movable bearing. In order to ensure the stability of the bearing, the axially movable bearing can adopt a cylindrical roller bearing with no flange on the outer ring or no flange on the inner ring, in this embodiment, the rear bearing 5 adopts a NU cylindrical roller bearing, and when the rotating shaft 10 is heated and expanded during working, the inner ring of the rear bearing 5 can be driven to axially move, and the normal operation of the rotating shaft 10 is not affected. In order to enable an axial movement space to be formed between the rear end of the rotating shaft 10 and the rear end cover 3, a shaft groove 30 coaxial with the rotating shaft 10 is formed in the inner side of the rear end cover 3, the diameter of the shaft groove 30 is larger than that of the rotating shaft 10, and the front end of the shaft groove 30 is located behind the rear end of the rotating shaft 10, so that the rotating shaft 10 is guaranteed to have enough movement space when being axially expanded when being heated.
The brush holder 6 is fixedly connected to the inner side of the rear end cover 3, the brush 61 is installed on the brush holder 6, the sliding ring 62 corresponding to the brush 61 is fixedly installed on the rotating shaft 10, a rear oil seal groove coaxial with the rotating shaft 10 is formed in the rear end of the brush holder 6, the rear oil seal 51 is fixedly installed in the rear oil seal groove, the rear oil seal 51 can isolate the carbon brush from the rear bearing 5, and carbon powder impurities falling in the working process of the carbon brush are prevented from entering the rear bearing 5 to affect the service life of the bearing. In order to improve the tightness of the rear oil seal 51, a rear shaft sleeve 52 is fixedly arranged on the rotating shaft 10 in front of the rear bearing 5, and the rear oil seal 51 is sleeved and fixed on the rear shaft sleeve 52. The shell 1 is provided with a wire outlet hole 12 corresponding to the electric brush.
The front end cover 2 is provided with a front bearing seat on the inner side, the front bearing 4 is arranged in the bearing seat, the inner end cover 7 is fixedly connected on the inner side of the bearing seat, and the bearing seat and the inner end cover 7 enclose a front bearing cavity 70. The front end cover 2 is provided with a lubricating oil channel 20, one end of the lubricating oil channel 20 is fixedly connected with a nipple 8, and the other end is communicated with a front bearing cavity 70. The front end cover 2 in front of the bearing seat is provided with a front oil seal groove coaxial with the rotating shaft 10, a front oil seal 41 is fixedly arranged in the front oil seal groove, and the front oil seal 41 can prevent external impurities of the shell 1 from entering the front bearing cavity 70 to influence the normal operation of the front bearing 4. In order to improve the tightness of the front oil seal 41, a front shaft sleeve 42 is fixedly arranged on the rotating shaft 10 in front of the front bearing 4, and the front oil seal 41 is sleeved and fixed on the front shaft sleeve 42. The inner end cover 7 is provided with a sealing groove, a sealing ring 9 is arranged in the sealing groove, the sealing ring 9 is sleeved and fixed on the rotating shaft 10, the sealing ring 9 can play a sealing role, the front bearing cavity 70 is isolated from the inner space of the shell 1, and lubricating oil is prevented from flowing into the generator to influence the normal operation of the generator. In order to help the motor cool, a blower such as an impeller 11 is fixedly mounted on the rotary shaft 10 in front of the front cover 2.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. Any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model are possible without departing from the technical substance of the present utility model.
Claims (10)
1. The utility model provides a pivot can axial displacement's generator, includes the casing, installs the pivot in the casing, its characterized in that: the front end of the shell is fixedly connected with a front end cover, the rear end of the shell is fixedly connected with a rear end cover, the shaft extension end of the rotating shaft is rotationally connected to the front end cover through a front bearing, the non-shaft extension end is rotationally connected to the rear end cover through a rear bearing, the rear bearing is an axially movable bearing, and an axially movable space is reserved between the rear end of the rotating shaft and the rear end cover.
2. The generator of claim 1, wherein the shaft is axially movable, and wherein: the inner side of the rear end cover is fixedly connected with a brush holder, the brush holder is provided with a brush, a sliding ring corresponding to the brush is fixedly arranged on the rotating shaft, the rear end of the brush holder is provided with a rear oil seal groove coaxial with the rotating shaft, and a rear oil seal is fixedly arranged in the rear oil seal groove.
3. The generator of claim 2, wherein the shaft is axially movable, and wherein: a rear shaft sleeve is fixed on the rotating shaft in front of the rear bearing, and a rear oil jacket is arranged on the rear shaft sleeve.
4. The generator of claim 2, wherein the shaft is axially movable, and wherein: the shell is provided with a wire outlet hole corresponding to the electric brush.
5. The generator of any one of claims 1 to 4, wherein the shaft is axially movable, wherein: the front end cover is provided with a bearing seat, the front bearing is arranged in the bearing seat, the inner side of the bearing seat is fixedly connected with an inner end cover, the bearing seat and the inner end cover enclose a front bearing cavity, the front end cover is provided with a lubricating oil channel, one end of the lubricating oil channel is fixedly connected with a nipple, and the other end of the lubricating oil channel is communicated with the front bearing cavity.
6. The generator of claim 5, wherein the shaft is axially movable, and wherein: a front oil seal groove coaxial with the rotating shaft is formed in a front end cover in front of the bearing seat, and a front oil seal is fixedly arranged in the front oil seal groove.
7. The generator of claim 6, wherein the shaft is axially movable, and wherein: a front shaft sleeve is fixedly arranged on a rotating shaft in front of the front bearing, and a front oil jacket is arranged on the front shaft sleeve.
8. The generator of claim 5, wherein the shaft is axially movable, and wherein: the inner end cover is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the sealing ring is sleeved on the rotating shaft.
9. The generator of any one of claims 1 to 4, wherein the shaft is axially movable, wherein: the inner side of the rear end cover is provided with a shaft groove coaxial with the rotating shaft, and the diameter of the shaft groove is larger than that of the rear end of the rotating shaft.
10. The generator of any one of claims 1 to 4, wherein the shaft is axially movable, wherein: the axially movable bearing is a flange-free cylindrical roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321805874.5U CN220210165U (en) | 2023-07-11 | 2023-07-11 | Generator with rotating shaft capable of axially moving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321805874.5U CN220210165U (en) | 2023-07-11 | 2023-07-11 | Generator with rotating shaft capable of axially moving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220210165U true CN220210165U (en) | 2023-12-19 |
Family
ID=89144874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321805874.5U Active CN220210165U (en) | 2023-07-11 | 2023-07-11 | Generator with rotating shaft capable of axially moving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220210165U (en) |
-
2023
- 2023-07-11 CN CN202321805874.5U patent/CN220210165U/en active Active
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