CN201403016Y - Shaft current prevention motor end cover structure - Google Patents
Shaft current prevention motor end cover structure Download PDFInfo
- Publication number
- CN201403016Y CN201403016Y CN2009200706029U CN200920070602U CN201403016Y CN 201403016 Y CN201403016 Y CN 201403016Y CN 2009200706029 U CN2009200706029 U CN 2009200706029U CN 200920070602 U CN200920070602 U CN 200920070602U CN 201403016 Y CN201403016 Y CN 201403016Y
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- CN
- China
- Prior art keywords
- bearing
- end cap
- flange
- end cover
- bearing pedestal
- 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 discloses a shaft current prevention motor end cover structure, which comprises a rotating shaft, a bearing arranged on the shaft diameter of the rotating shaft, a bearing support arranged on the bearing outer ring, an inside and an outside bearing covers arranged on the two sides of the bearing and the bearing support, an end cover and an insulated sleeve arranged on the bearingouter ring, and the first and the second insulating layers of an insulated flat gasket, wherein the inside and the outside bearing covers are fixedly connected with the bearing support through a first bolt, and the first insulating layer is arranged in an interference-fit manner between the bearing support and the end cover; a second bolt is included as well, a vertical flange is arranged on theouter end surface of the bearing support, the flange is arranged on one side of the end cover, a screw hole is opened in the horizontal direction on the flange, the second insulating layer is arrangedbetween the flange and the end cover, the insulated sleeve is arranged in the through-hole of the end cover, and after penetrating the insulated flat gasket and the insulated sleeve, the second boltis screwed into the screw hole of the bearing support flange. No insulating part is required to be dismounted during the disassembly and maintenance of the motor, thereby avoiding the damage to the insulating layer and ensuring the function of shaft current prevention.
Description
Technical field
The utility model relates to a kind of motor end cap structure of anti-shaft current.
Background technology
Motor is in operation owing to reasons such as the magnetic field air gap is inhomogeneous can produce shaft current, and the path of shaft current is transferred on the electric motor end cap by bearing by machine shaft, forms path.The harm of shaft current is to produce galvanic corrosion on the rolling element surface of bearing, thereby destroys bearing race, causes equipment fault.At present, prevent that shaft current from generally being to adopt the anti-shaft current end cap of insulation bearing or tape insulation, as shown in Figure 1, it is existing the most frequently used anti-shaft current electric motor end cap, bearing 2 is located in the rotating shaft 1, bearing 2 is located at bearing pedestal 5 endoporus, its end cap 6 and inside cap 3, adopt insulating part 8 to isolate between outer bearing cover 4 and the bearing pedestal 6, and inside cap 3,6 of outer bearing cover 4 and end caps are fixing by bolt 7, bolt 7 adopts insulating sleeve 9 and insulation plain washer 10 and end cap 6 insulation, and the shaft current transmission that has guaranteed rotating shaft is less than end cap, thus the transmission path that has cut off shaft current, but the shortcoming of this structure is, when motor needs countershaft or bearing etc. to disintegrate maintenance, behind demounting bolt, pull down a pile insulating element, and this insulating part is generally epoxide resin material, damages easily; When assembling, the bearing pedestal of tape insulation and end cap such as the magnitude of interference are not enough, can come off from the bearing saddle bore of end cap, cause the destruction of insulating barrier simultaneously, thereby can't play the effect of anti-shaft current.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of motor end cap structure of anti-shaft current, this structure is fixed together the bearing pedestal and the electric motor end cap of tape insulation reliably, guarantee in the disassembly process can not come off, in the disintegration maintenance, do not need to pull down insulating part yet, avoid the destruction of insulating barrier, guaranteed the effect of anti-shaft current.
For solving the problems of the technologies described above, the motor end cap structure of the anti-shaft current of the utility model comprises rotating shaft, is located at the bearing of the rotating shaft diameter of axle, the bearing pedestal of being located at bearing outer ring, the inside cap and the outer bearing cover that are positioned at bearing and bearing pedestal both sides, the end cap that is positioned at the bearing pedestal outer ring and insulating sleeve, insulation flat shim, first insulating barrier and second insulating barrier, described inside cap is connected by first bolt with bearing pedestal with outer bearing cover, be provided with first insulating barrier between described bearing pedestal and the described end cap, described bearing pedestal and described end cap are interference fit; This motor end cap structure also comprises second bolt, described bearing pedestal outer face is provided with vertical flanges, described flange is positioned at described end cap one side, described flange horizontal direction has screw, described second insulating barrier is between described flange and end cap, described insulating sleeve is located in the through hole of described end cap, and described second bolt is screwed in the screw of described bearing pedestal flange after penetrating described insulation flat shim and insulating sleeve.
Above-mentioned first insulating barrier and second insulating barrier can adopt the insulating barrier of being made by epoxide resin material.
Above-mentioned insulating sleeve and insulation flat shim can adopt sleeve pipe and the pad of being made by the bakelite material.
Because the motor end cap structure of the anti-shaft current of the utility model has adopted technique scheme, promptly be provided with vertical flanges in the bearing pedestal outer face, this flange is provided with screw, and adopt bolt to penetrate in the screw that is screwed into the bearing pedestal flange behind the through hole of end cap to be used for fastener shaft bearing and end cap, simultaneously, do insulation by insulating part between bolt and end cap and the bearing pedestal and isolate, to intercept the shaft current path; This structure is fixed together the bearing pedestal and the electric motor end cap of tape insulation reliably, guarantees in the disassembly process can not come off, and disintegrates in the maintenance, does not also need to pull down insulating part, has avoided the destruction of insulating barrier, has guaranteed the effect of anti-shaft current.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the structural representation of the anti-shaft current electric motor end cap of tradition,
Fig. 2 is the structural representation of the motor end cap structure of the anti-shaft current of the utility model.
Embodiment
As shown in Figure 2, the motor end cap structure of the anti-shaft current of the utility model comprises rotating shaft 1, be located at the bearing 2 of rotating shaft 1 diameter of axle, be located at the bearing pedestal 5 of bearing 2 outer rings, be positioned at the inside cap 3 and the outer bearing cover 4 of bearing 2 and bearing pedestal 5 both sides, be positioned at the end cap 6 and the insulating sleeve 9 of bearing pedestal 5 outer rings, insulation flat shim 10, first insulating barrier 81 and second insulating barrier 82, described inside cap 3 is fixedlyed connected by first bolt 71 with bearing pedestal 5 with outer bearing cover 4, be provided with first insulating barrier 81 between described bearing pedestal 5 and the described end cap 6, described bearing pedestal 5 is interference fit with described end cap 6; This motor end cap structure also comprises second bolt 72, described bearing pedestal 5 outer faces are provided with vertical flanges 51, described flange 51 is positioned at described end cap 6 one sides, described flange 51 horizontal directions have screw 52, described second insulating barrier 82 is between described flange 51 and end cap 6, described insulating sleeve 9 is located in the through hole of described end cap 6, and described second bolt 72 is screwed in the screw 52 of described bearing pedestal flange 51 after penetrating described insulation flat shim 10 and insulating sleeve 9.
Above-mentioned first insulating barrier 81 and second insulating barrier 82 can adopt the insulating barrier of being made by epoxide resin material.
Above-mentioned insulating sleeve 9 and insulation flat shim 10 can adopt sleeve pipe and the pad of being made by the bakelite material.
The motor end cap structure of the anti-shaft current of the utility model is provided with vertical flanges in the bearing pedestal outer face, this flange is provided with screw, and adopt bolt to penetrate in the screw that is screwed into the bearing pedestal flange behind the through hole of end cap to be used for fastener shaft bearing and end cap, simultaneously, do insulation by insulating part between bolt and end cap and the bearing pedestal and isolate, to intercept the shaft current path;
In the practical application, brearing bore is fixed on the axle journal of machine shaft, bearing top circle is assemblied in the inner hole of bearing seat and by first bolt, inside cap, outer bearing cover and fixes, all on-insulated between machine shaft, bearing, the bearing pedestal, but because the effect of insulation plain washer, insulating sleeve, first and second insulating barriers, make electric motor end cap and bearing, pedestal bearing insulation, guarantee to cut off shaft current by the path of bearing by electric motor end cap.Second bolt is locked at the flange of bearing pedestal on the electric motor end cap simultaneously; reliably electric motor end cap and bearing pedestal are fused; guarantee can not get loose in the disassembly process; when disintegrating the maintenance maintenance; only need first bolt is unclamped taking-up; and bearing pedestal and end cap and all insulating parts all keep former connection status constant, can effectively avoid the damage of dismounting bearing pedestal and the caused insulating part of end cap, have effectively protected the insulation property of insulating part.
Claims (3)
1, a kind of motor end cap structure of anti-shaft current, comprise rotating shaft, be located at the bearing of the rotating shaft diameter of axle, the bearing pedestal of being located at bearing outer ring, the inside cap and the outer bearing cover that are positioned at bearing and bearing pedestal both sides, the end cap that is positioned at the bearing pedestal outer ring and insulating sleeve, insulation flat shim, first insulating barrier and second insulating barrier, described inside cap is connected by first bolt with bearing pedestal with outer bearing cover, be provided with first insulating barrier between described bearing pedestal and the described end cap, described bearing pedestal and described end cap are interference fit; It is characterized in that: also comprise second bolt, described bearing pedestal outer face is provided with vertical flanges, described flange is positioned at described end cap one side, described flange horizontal direction has screw, described second insulating barrier is between described flange and end cap, described insulating sleeve is located in the through hole of described end cap, and described second bolt is screwed in the screw of described bearing pedestal flange after penetrating described insulation flat shim and insulating sleeve.
2, the motor end cap structure of anti-shaft current according to claim 1 is characterized in that: described first insulating barrier and second insulating barrier are the insulating barriers that epoxide resin material is made.
3, the motor end cap structure of anti-shaft current according to claim 1 is characterized in that: described insulating sleeve and insulation flat shim are sleeve pipe and the pads that the bakelite material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200706029U CN201403016Y (en) | 2009-04-17 | 2009-04-17 | Shaft current prevention motor end cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200706029U CN201403016Y (en) | 2009-04-17 | 2009-04-17 | Shaft current prevention motor end cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201403016Y true CN201403016Y (en) | 2010-02-10 |
Family
ID=41662815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200706029U Expired - Fee Related CN201403016Y (en) | 2009-04-17 | 2009-04-17 | Shaft current prevention motor end cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201403016Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497070A (en) * | 2011-11-29 | 2012-06-13 | 中电电机股份有限公司 | Sliding bearing flame-proof motor insulation push cover assembling structure |
| CN102857013A (en) * | 2011-06-27 | 2013-01-02 | 上海宝钢设备检修有限公司 | Motor bearing fault auxiliary protective structure |
| CN106685130A (en) * | 2017-01-22 | 2017-05-17 | 无锡市宏泰电机股份有限公司 | Insulation structure for reducing shaft current of non-driving extension end of motor |
| CN108023431A (en) * | 2017-12-05 | 2018-05-11 | 广西恒达电机科技有限公司 | A kind of insulation bearing base device |
| CN114026345A (en) * | 2019-06-26 | 2022-02-08 | Abb瑞士股份有限公司 | Wear-resistant bearing construction with insulating sleeve and modules |
-
2009
- 2009-04-17 CN CN2009200706029U patent/CN201403016Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857013A (en) * | 2011-06-27 | 2013-01-02 | 上海宝钢设备检修有限公司 | Motor bearing fault auxiliary protective structure |
| CN102857013B (en) * | 2011-06-27 | 2014-11-05 | 上海宝钢设备检修有限公司 | Motor bearing fault auxiliary protective structure |
| CN102497070A (en) * | 2011-11-29 | 2012-06-13 | 中电电机股份有限公司 | Sliding bearing flame-proof motor insulation push cover assembling structure |
| CN106685130A (en) * | 2017-01-22 | 2017-05-17 | 无锡市宏泰电机股份有限公司 | Insulation structure for reducing shaft current of non-driving extension end of motor |
| CN108023431A (en) * | 2017-12-05 | 2018-05-11 | 广西恒达电机科技有限公司 | A kind of insulation bearing base device |
| CN114026345A (en) * | 2019-06-26 | 2022-02-08 | Abb瑞士股份有限公司 | Wear-resistant bearing construction with insulating sleeve and modules |
| CN114026345B (en) * | 2019-06-26 | 2024-03-22 | Abb瑞士股份有限公司 | Wear bearing construction with insulating sleeve and module |
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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: 20100210 Termination date: 20100417 |