CN201199650Y - Shaft current proof insulated structure for motor - Google Patents
Shaft current proof insulated structure for motor Download PDFInfo
- Publication number
- CN201199650Y CN201199650Y CNU2008201168531U CN200820116853U CN201199650Y CN 201199650 Y CN201199650 Y CN 201199650Y CN U2008201168531 U CNU2008201168531 U CN U2008201168531U CN 200820116853 U CN200820116853 U CN 200820116853U CN 201199650 Y CN201199650 Y CN 201199650Y
- Authority
- CN
- China
- Prior art keywords
- end cover
- bearing
- end cap
- motor
- inner ring
- 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
Links
- 239000011810 insulating material Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to a motor insulating structure for preventing shaft current from damaging a bearing. The motor insulating structure is characterized in that an end cover is formed by connecting an end cover inner ring and an end cover outer ring; insulating materials are arranged on the junction surface of the end cover inner ring and the end cover outer ring which are connected together by a bolt; and insulating materials are filled between the bolt and the screw holes of the end cover inner ring and the end cover outer ring. In the motor insulating structure, the end cover is divided into two parts, namely the end cover inner ring and the end cover outer ring, and the insulating materials are arranged on the junction surface of the end cover inner ring and the end cover outer ring, so that loop is not formed between the bearing and a motor cabinet, and shaft voltage can not generate the shaft current and can not damage the bearing, thereby prolonging the service life of the bearing. In addition, the motor insulating structure has the advantages of simple structure and convenient installation and disassembly, and can achieve identical insulating effect, thereby greatly reducing the manufacturing cost of a motor.
Description
Technical field
The utility model relates to a kind of motor, especially relates to a kind of shaft current that prevents and damages the electrical machine insulation structure of bearing.
Background technology
In the prior art, the rotor of motor is in alternating magnetic field or in the asymmetric occasion of magnetic circuit, can produce shaft voltage at the two ends of rotating shaft, the loop that shaft voltage constitutes to support, over the ground produces shaft current, particularly in adopting the large and medium-sized motor of rolling bearing, when motor shaft voltage is increased to certain numerical value, electric discharge phenomena will take place in the shaft current by bearing and rotor, thereby the bearing to motor constitutes destruction, and shortened the useful life of bearing.If in motor, use outer rim insulation bearing, interior steel ring insulation bearing or ceramic bearing etc., its complex manufacturing, cost height.
The utility model content
The applicant is at above-mentioned problem, carried out research and improved, and provides a kind of cost shaft current that prevents low, that improve bearing useful life to damage the electrical machine insulation structure of bearing.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of motor is prevented the shaft current insulation system, comprise the bearing that is set in the rotating shaft, two end devices of bearing have internal bearing cover and bearing end cover, the peripheral equipment of bearing in end cap that motor cabinet links to each other in, described end cap is connected and composed by end cap inner ring and end cap outer ring, place, the composition surface device of end cap inner ring and end cap outer ring has insulating material, and described end cap inner ring is connected with screw with the end cap outer ring, and device has insulating material between the screw hole of screw and end cap inner ring and end cap outer ring.
Technique effect of the present utility model is:
The utility model is divided into end cap end cap inner ring and end cap outer ring two parts and installs insulating material on the composition surface between two parts, make and do not constitute the loop between bearing and the motor cabinet, even shaft voltage can not produce shaft current yet, can not produce destruction, thereby prolong the life-span of bearing bearing.In addition, the utility model is simple in structure, installs, convenient disassembly, can reach same insulation effect and reduces the manufacturing cost of motor widely.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, the interior coil apparatus of bearing 5 of the present utility model is in rotating shaft 2, and two end devices of bearing 5 have internal bearing cover 1 and bearing end cover 4, in the present embodiment, at an end returning apparatus of the bearing end cover 4 of bearing 5 back-up ring 3 is arranged.End cap is connected and composed by end cap inner ring 7 and end cap outer ring 10, end cap inner ring 7 has insulating material 8 with place, the composition surface device of end cap outer ring 10, end cap inner ring 7 is connected with end cap outer ring 10 usefulness screws 13, device has insulating material 9 between the screw hole of screw 13 and end cap inner ring 7 and end cap outer ring 10, end cap outer ring 10 is installed on the motor cabinet 12 by screw 11, and internal bearing cover 1 and bearing end cover 4 install on end cap inner ring 7 by screw 6.In the present embodiment, add that by no latitude glass tape the technology of epoxide-resin glue makes at the insulating material 801 at end cap inner ring 7 and the place, cylinder composition surface of end cap outer ring 10, insulating material 902 in the hole of the insulating material 802 at end cap inner ring 7 and the plane engaging surface place of end cap outer ring 10 and mounting screw 13 is epoxy glass cloth laminated boards, 13 insulating material 901 on every side of screw are epoxide-resin glues, and insulating material 903 is expoxy glass stringings.So just fully the loop between bearing 5 and the support 12 is disconnected by insulation, even there is shaft voltage also can not form shaft current, can not damage bearing, in addition, this insulation system design is convenient, technology is simple, installs, convenient disassembly, can reach same insulation effect and has reduced the manufacturing cost of motor widely.
Claims (1)
1. a motor is prevented the shaft current insulation system, comprise the bearing that is set in the rotating shaft, two end devices of bearing have internal bearing cover and bearing end cover, the peripheral equipment of bearing in end cap that motor cabinet links to each other in, it is characterized in that: described end cap is connected and composed by end cap inner ring and end cap outer ring, place, the composition surface device of end cap inner ring and end cap outer ring has insulating material, and described end cap inner ring is connected with screw with the end cap outer ring, and device has insulating material between the screw hole of screw and end cap inner ring and end cap outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201168531U CN201199650Y (en) | 2008-05-10 | 2008-05-10 | Shaft current proof insulated structure for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201168531U CN201199650Y (en) | 2008-05-10 | 2008-05-10 | Shaft current proof insulated structure for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199650Y true CN201199650Y (en) | 2009-02-25 |
Family
ID=40450800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201168531U Expired - Fee Related CN201199650Y (en) | 2008-05-10 | 2008-05-10 | Shaft current proof insulated structure for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201199650Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005841A (en) * | 2010-11-30 | 2011-04-06 | 东方电气集团东方电机有限公司 | Semi-direct drive megawatt-level permanent-magnet windmill generator |
| CN102377270A (en) * | 2010-08-20 | 2012-03-14 | 上海电气集团上海电机厂有限公司 | Insulating end cap applied to motor |
| CN103023190A (en) * | 2012-12-17 | 2013-04-03 | 浙江金龙电机股份有限公司 | High-power variable frequency motor insulation bearing sleeve |
| CN103178636A (en) * | 2011-12-22 | 2013-06-26 | 襄阳南车电机技术有限公司 | Non-transmission-end insulating end cover of steel rail grinding wagon electric motor |
| CN104143873A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | Ultra-high-speed permanent-magnet synchronous motor with insulated bearing structure |
-
2008
- 2008-05-10 CN CNU2008201168531U patent/CN201199650Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377270A (en) * | 2010-08-20 | 2012-03-14 | 上海电气集团上海电机厂有限公司 | Insulating end cap applied to motor |
| CN102005841A (en) * | 2010-11-30 | 2011-04-06 | 东方电气集团东方电机有限公司 | Semi-direct drive megawatt-level permanent-magnet windmill generator |
| CN102005841B (en) * | 2010-11-30 | 2012-08-15 | 东方电气集团东方电机有限公司 | Semi-direct drive megawatt-level permanent-magnet windmill generator |
| CN103178636A (en) * | 2011-12-22 | 2013-06-26 | 襄阳南车电机技术有限公司 | Non-transmission-end insulating end cover of steel rail grinding wagon electric motor |
| CN103023190A (en) * | 2012-12-17 | 2013-04-03 | 浙江金龙电机股份有限公司 | High-power variable frequency motor insulation bearing sleeve |
| CN103023190B (en) * | 2012-12-17 | 2015-03-25 | 浙江金龙电机股份有限公司 | High-power variable frequency motor insulation bearing sleeve |
| CN104143873A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | Ultra-high-speed permanent-magnet synchronous motor with insulated bearing structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20160510 |