CN201360199Y - Electric motor capable of bearing large axial tension - Google Patents
Electric motor capable of bearing large axial tension Download PDFInfo
- Publication number
- CN201360199Y CN201360199Y CNU2008202376688U CN200820237668U CN201360199Y CN 201360199 Y CN201360199 Y CN 201360199Y CN U2008202376688 U CNU2008202376688 U CN U2008202376688U CN 200820237668 U CN200820237668 U CN 200820237668U CN 201360199 Y CN201360199 Y CN 201360199Y
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- bearing
- angular contact
- contact ball
- ball bearing
- bearings
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Abstract
The utility model relates to an electric motor capable of bearing large axial tension, which is characterized in that the bearing of the shaft extension end of an electric motor is formed by deep groove ball bearings and angular contact ball bearings which are arranged in parallel, and the angular contact ball bearings are arranged at the side of the shaft extension; clearance fit is adopted between angular contact ball bearing outer rings and bearing blocks, and the wide ends face towards a rotator; at least two pressure springs are arranged at the outer side of the two bearings, are uniformly distributed and pressed against the two bearing outer rings; and the bearing at the non shaft extension ends of the electric motor are the deep groove ball bearings. By adopting a combined structure of the deep groove ball bearings and the angular contact ball bearing at the shaft extension end of the electric motor and the angular contact ball bearing outer ring which can float, the main axial tension is born by the angular contact ball bearing, and the radial force and smaller axial force are born by the deep groove ball bearings at the two ends, thereby ensuring the service lives of the bearings and prolonging the service life of the electric motor. In addition, by utilizing the pressure springs to press the deep groove ball bearings and the angular contact ball bearing outer ring so as to enable the bearings to work at the zero clearance state, thus reducing the noise and vibration.
Description
Technical field
The utility model relates to a kind of motor, especially relates to a kind of motor that can bear big axial pulling force.
Background technology
Along with the manufacturing technology of low-pressure high-power motor is more and more ripe, its range of application is also more and more wider, and the dredger that a lot of shipyards are made has all been selected the low-pressure high-power motor for use.The condition of work of motor on dredger is quite harsh, motor need be worked on the rocking arm that angle constantly changes, mobility scale is generally 0 °～60 °, that is to say that motor need lean forward and the work down of the state of translation-angle, make the bearing of motor bear bigger axial tension, like this, the bearing of motor just needs constantly conversion between bearing radial force and axial tension, make bearing life shorten greatly, had a strong impact on motor useful life.In addition, in the prior art, usually adopt two angular contact bearings of mounted in pairs on motor shaft for the motor that needs bearing axial pushing force or pulling force, but angular contact bearing is in use had relatively high expectations to the gap, install and adjust difficulty, after long-term the use,, become big and make noise and vibrate because the gap becomes greatly gradually.
The utility model content
The applicant is at above-mentioned problem, carried out research and improved, and a kind of big axially motor of pulling force that bears is provided, and prolongs the useful life of motor middle (center) bearing, prolongs motor useful life, reduces the noise and the vibration of motor.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of motor that bears big axial pulling force, comprise casing, main shaft, stator and rotor, main shaft supporting is on the bearing at casing two ends, the bearing of motor shaft extension end is made of deep groove ball bearing arranged side by side and angular contact ball bearing, the inner ring of two bearings is by the packing ring axially-spaced, and angular contact ball bearing is arranged on shaft extension one side; Be matched in clearance between angular contact ball bearing outer ring and the bearing pedestal, its wide end is towards rotor; Be respectively equipped with at least two stage clips in the outside of two bearings, evenly distribute and be pressed on two bearing outer rings; The bearing of motor non-shaft stretching end is a deep groove ball bearing.
Further:
The outside of the bearing of described motor non-shaft stretching end is provided with at least two stage clips, evenly distributes and is pressed on the outer ring of bearing.
Gap between described angular contact ball bearing outer ring and the bearing pedestal is 0.2～0.8 millimeter.
Technique effect of the present utility model is:
The disclosed a kind of big axially motor of pulling force that bears of the utility model, its shaft extension end adopts deep groove ball bearing and angular contact ball bearing structure combining, and can float in the outer ring of angular contact ball bearing, thereby bear main axial tension by angular contact ball bearing, by two ends deep groove ball bearing bearing radial force and less axial force, make the stressed more reasonable of bearing, guarantee the useful life of bearing, thereby prolong the useful life of motor.In addition, utilize stage clip to compress deep groove ball bearing and angular contact ball bearing outer ring, when motor is worked under different operating angles, two bearings all are under the state of zero windage, thereby reduce the gap that wearing and tearing produce in noise that the gap of bearing own produces and vibration and the use and noise and the vibration that produces.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the B place enlarged drawing of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, 2, 3, the utility model comprises casing 1, main shaft 2, stator 3 and rotor 4, main shaft 2 is bearing on the bearing at casing 1 two ends, the bearing of motor shaft extension end is made of deep groove ball bearing arranged side by side 5 and angular contact ball bearing 6, the inner ring of two bearings is by packing ring 7 axially-spaceds, angular contact ball bearing 6 is arranged on shaft extension one side, and the wide end of angular contact ball bearing 6 is towards rotor 4.For leaving clearance C (Fig. 2), the best clearance scope between angular contact ball bearing 6 outer rings and the bearing pedestal 13 is 0.2～0.8 millimeter between angular contact ball bearing 6 outer rings and the bearing pedestal 13, and in the present embodiment, this gap C is 0.5 millimeter.Be respectively equipped with stage clip 9 and stage clip 11 in the outside of deep groove ball bearing 5 and angular contact ball bearing 6, a plurality of stage clips 9 and a plurality of stage clip 11 evenly distribute respectively and are pressed on deep groove ball bearing 5 and angular contact ball bearing 6 outer rings, stage clip 9 devices are in shaft extension end enclosing cover 10, stage clip 11 devices are in shaft extension end inner cap 12,11 pairs of deep groove ball bearings 5 of stage clip 9 and stage clip and angular contact ball bearing 6 outer ring thrust directions are relative, deep groove ball bearing 5 and angular contact ball bearing 6 are produced thrust, eliminate the gap of 7 on own gap of deep groove ball bearing 5 and angular contact ball bearing 6 and two bearings and packing ring, when motor leans forward and work under different operating angles, two bearings all are under the state of zero windage, thereby reduce the gap that wearing and tearing produce in noise that the gap of bearing own produces and vibration and the use and noise and the vibration that produces.Bearing arrangement at the motor non-shaft stretching end has deep groove ball bearing 8, the outside of deep groove ball bearing 8 is provided with at least two stage clips 14, a plurality of stage clips 14 evenly distribute and are against on the outer ring of deep groove ball bearing 8, stage clip 14 devices are in non-shaft stretching end enclosing cover 15, the thrust of stage clip 14, thus deep groove ball bearing 8 gaps own reduce noise and the vibration that the gap of bearing own is produced.
The disclosed motor that bears big axial pulling force of the utility model is used in the state work down of leaning forward, and bears bigger axial tension.At motor shaft extension end, owing to leave the gap between the outer ring of angular contact ball bearing 6 and the bearing pedestal 13, guarantee not bearing radial force of angular contact ball bearing 6, only when leaning forward, the machine operation angle bears bigger axial tension, and adopt interference fits between the outer ring of deep groove ball bearing 5 and the bearing pedestal 13, can bear radial load under the various operating angles and less axial force.At the motor non-shaft stretching end, leave the gap between non-shaft stretching end inner cap 16 seams and deep groove ball bearing 8 outer rings, guarantee that under the situation that the machine operation angle changes, 8 of deep groove ball bearings bear less axial force and main bearing radial force.
Claims (3)
1. one kind is born the big axially motor of pulling force, comprise casing, main shaft, stator and rotor, main shaft supporting is on the bearing at casing two ends, it is characterized in that: the bearing of motor shaft extension end is made of deep groove ball bearing arranged side by side and angular contact ball bearing, the inner ring of two bearings is by the packing ring axially-spaced, and angular contact ball bearing is arranged on shaft extension one side; Be matched in clearance between angular contact ball bearing outer ring and the bearing pedestal, its wide end is towards rotor; Be respectively equipped with at least two stage clips in the outside of two bearings, evenly distribute and be pressed on two bearing outer rings; The bearing of motor non-shaft stretching end is a deep groove ball bearing.
2. bear the big axially motor of pulling force according to claim 1 is described, it is characterized in that: the outside of the bearing of described motor non-shaft stretching end is provided with at least two stage clips, evenly distributes and is pressed on the outer ring of bearing.
3. according to the described motor that bears big axial pulling force of claim 1, it is characterized in that: the gap between described angular contact ball bearing outer ring and the bearing pedestal is 0.2～0.8 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202376688U CN201360199Y (en) | 2008-12-30 | 2008-12-30 | Electric motor capable of bearing large axial tension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202376688U CN201360199Y (en) | 2008-12-30 | 2008-12-30 | Electric motor capable of bearing large axial tension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201360199Y true CN201360199Y (en) | 2009-12-09 |
Family
ID=41425964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202376688U Expired - Fee Related CN201360199Y (en) | 2008-12-30 | 2008-12-30 | Electric motor capable of bearing large axial tension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201360199Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713693A (en) * | 2020-12-22 | 2021-04-27 | 上海电气集团上海电机厂有限公司 | High-rotating-speed heavy-load rolling bearing device installed at 45-degree inclination for motor |
-
2008
- 2008-12-30 CN CNU2008202376688U patent/CN201360199Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713693A (en) * | 2020-12-22 | 2021-04-27 | 上海电气集团上海电机厂有限公司 | High-rotating-speed heavy-load rolling bearing device installed at 45-degree inclination for motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: REGAL BELOIT (WUXI) CO., LTD. Free format text: FORMER NAME: HUADA MOTOR CO., LTD., WUXI |
|
| CP03 | Change of name, title or address |
Address after: 214000 lakes in Jiangsu province Wuxi City foreshore Hu Dai Xiang pigeon Road No. 6 Patentee after: Thunder electric (Wuxi) Co., Ltd. Address before: 214131, No. 251, military road, Hua Zhuang Town, Binhu District, Jiangsu, Wuxi Patentee before: Huada Motor Co., Ltd., Wuxi |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20171230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |