CN200966016Y - A device for eliminating the current on the synchronous motor shaft - Google Patents
A device for eliminating the current on the synchronous motor shaft Download PDFInfo
- Publication number
- CN200966016Y CN200966016Y CN 200620024995 CN200620024995U CN200966016Y CN 200966016 Y CN200966016 Y CN 200966016Y CN 200620024995 CN200620024995 CN 200620024995 CN 200620024995 U CN200620024995 U CN 200620024995U CN 200966016 Y CN200966016 Y CN 200966016Y
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- motor shaft
- motor
- shaft
- utility
- 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
Images
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to a synchronous motor shaft current device belonging to the motor technique field, which is used for eliminating erosion caused by axis current. The technic proposal of the utility model is that the utility model is composed of a carbon brush frame and a carbon brush; wherein the carbon brush frame is arranged in the bare shaft at two ends of a motor shaft; the carbon brush is arranged on the carbon brush frame; one end of the carbon brush is elastically connected with the motor shaft, while the other end of the brush is connected with the ground. By adopting the device, the motor shaft is connected with the ground by the carbon brush, thus forming a circuit; shaft voltage is released by the circuit, thus the axis current does not flow through a motor bearing. The utility model can effectively ensure the safe operation of an assy; the device is simple, reliable and easy in installation and requiring fewer components, which is suitable for promotion.
Description
Technical field
The utility model relates to a kind of servicing unit of synchronous machine, belongs to technical field of motors.
Background technology
Synchronous machine is in startup, operation, stopped process, and effectively eliminating shaft voltage is technological difficulties.In case voltage appears in the motor shaft two ends, according to Ohm's law, this voltage will externally form the loop, and discharge electric energy.In fact; the shaft voltage at motor shaft two ends can be by motor or unit bearings at both ends and casing formation external circuit; after forming, external circuit must have electric current to flow through bearing; when flowing through bearing, electric current often has the electric welding machine effect; with bearing smooth surface hacking; form the erosion point, influence unit safety operation, also may cause great machine halt trouble or accident when serious.
Usually the method that addresses this problem is: between the bearing pedestal of motor and motor housing, installs insulating material additional, makes motor shaft and casing insulation, allow the motor shaft both end voltage can not form current circuit, thus the protection motor bearings.
The distinct disadvantage of this method is: 1, use the way cost height of insulation, maintenance workload is big; 2, keep good because of environmental factor is difficult to make insulation in the long-time running, in case failure of insulation, motor just can not get due protection; 3, insulating mounting is strict, and is strict to various sizes, increased repair time and workload virtually.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of device of eliminating the synchronous machine shaft current, is not subjected to the erosion of this electric current to guarantee motor bearings.
The technical scheme that addresses the above problem is:
A kind of device of eliminating the synchronous machine shaft current, it is made up of carbon brush holder and carbon brush, and carbon brush holder is installed in the naked axle place at motor shaft two ends, and carbon brush is installed on the carbon brush holder, and carbon brush one end links to each other with motor shaft elasticity, other end ground connection.
The device of above-mentioned elimination synchronous machine shaft current, described carbon brush is pressed against on the motor shaft by stage clip.
The device of above-mentioned elimination synchronous machine shaft current, described carbon brush holder and carbon brush are two covers, are installed in the two ends of motor shaft respectively.
The device of above-mentioned elimination synchronous machine shaft current, every cover carbon brush holder is provided with two carbon brush, contacts motor shaft with different length during placement, so that can not shut down the replacing carbon brush.
After adopting this device, motor shaft forms external circuit by carbon brush ground connection, and the shaft voltage on the motor shaft discharges by this circuit, and shaft current can not flow through motor bearings.This change is stifled to prevent that into the method for dredging obviously is better than installing additional insulating material shaft voltage from forming the method for impacting motor bearings after the shaft current, can guarantee the safe operation of unit effectively.The utility model is simple and reliable, and is easy for installation, uses parts few, is suitable for promoting.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each mark is as follows among the figure: motor stator 1, motor shaft 2, motor shaft bearing 3, motor base 4, carbon brush holder 5, carbon brush 6, ground wire 7.
Embodiment
Show among the figure, motor shaft 2 is supported by motor shaft bearing 3, motor stator 1 and motor shaft bearing 3 all are installed on the motor base 4, two cover carbon brush holder 5 and carbon brush 6 have been installed at naked axle place at motor shaft 2 two ends respectively, with motor shaft 2 is slip ring, make motor shaft 2 link to each other the other end ground connection of carbon brush 6 with carbon brush 6 elasticity.Carbon brush 6 can be leaned against on the motor shaft 2 by spring compression, guarantees that contact is good, and carbon brush 6 can pass through motor housing ground connection.At least can put two carbon brush 6 on every cover carbon brush holder 5, want length different during placement, when making regular check on equipment, periodic replacement, each every cover is only changed a carbon brush 6, is connected with the reliable of motor shaft 2 to guarantee carbon brush 6.Motor shaft 2 forms external circuit by carbon brush 6 ground connection, and the shaft voltage on the motor shaft 2 discharges by this circuit, and shaft current can not flow through motor bearings, has guaranteed the safe operation of unit effectively.
Claims (4)
1. device of eliminating the synchronous machine shaft current, it is characterized in that: it is made up of carbon brush holder (5) and carbon brush (6), carbon brush holder (5) is installed in the naked axle place at motor shaft (2) two ends, carbon brush (6) is installed on the carbon brush holder (5), carbon brush (6) one ends link to each other other end ground connection with motor shaft (2) elasticity.
2. the device of elimination synchronous machine shaft current according to claim 1 is characterized in that: described carbon brush (6) is pressed against on the motor shaft (2) by stage clip.
3. the device of elimination synchronous machine shaft current according to claim 2 is characterized in that: described carbon brush holder (5) and carbon brush (6) are two covers, are installed in the two ends of motor shaft (2) respectively.
4. the device of elimination synchronous machine shaft current according to claim 3 is characterized in that: every cover carbon brush holder (5) is provided with two carbon brush (6), contacts motor shaft (2) with different length during placement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024995 CN200966016Y (en) | 2006-07-20 | 2006-07-20 | A device for eliminating the current on the synchronous motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024995 CN200966016Y (en) | 2006-07-20 | 2006-07-20 | A device for eliminating the current on the synchronous motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200966016Y true CN200966016Y (en) | 2007-10-24 |
Family
ID=38870035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620024995 Expired - Fee Related CN200966016Y (en) | 2006-07-20 | 2006-07-20 | A device for eliminating the current on the synchronous motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200966016Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917091A (en) * | 2010-06-21 | 2010-12-15 | 无锡哈电电机有限公司 | Grounding device of variable-frequency high-voltage motor |
| CN103730988A (en) * | 2013-12-03 | 2014-04-16 | 山东金阳矿业集团有限公司 | Motor shaft current removing device |
| CN104052202A (en) * | 2013-03-14 | 2014-09-17 | 雷勃美国公司 | Grounding device for electric machine and methods of assembling same |
| CN110671434A (en) * | 2019-09-26 | 2020-01-10 | 安徽国风塑业股份有限公司 | Device for eliminating bearing induced current |
-
2006
- 2006-07-20 CN CN 200620024995 patent/CN200966016Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917091A (en) * | 2010-06-21 | 2010-12-15 | 无锡哈电电机有限公司 | Grounding device of variable-frequency high-voltage motor |
| CN104052202A (en) * | 2013-03-14 | 2014-09-17 | 雷勃美国公司 | Grounding device for electric machine and methods of assembling same |
| CN104052202B (en) * | 2013-03-14 | 2018-04-06 | 雷勃美国公司 | Motor and the earthing or grounding means for motor |
| CN103730988A (en) * | 2013-12-03 | 2014-04-16 | 山东金阳矿业集团有限公司 | Motor shaft current removing device |
| CN110671434A (en) * | 2019-09-26 | 2020-01-10 | 安徽国风塑业股份有限公司 | Device for eliminating bearing induced current |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200966016Y (en) | A device for eliminating the current on the synchronous motor shaft | |
| CN201204506Y (en) | Motor convenient for replacing electrical brush | |
| CN203423354U (en) | High-speed current collecting device | |
| CN202817454U (en) | Thunder guiding device | |
| CN208862699U (en) | A kind of motor shaft current eliminates structure and motor | |
| CN102384044A (en) | Lightening protection device for wind generating set blade | |
| CN201278430Y (en) | Central electricity conductor | |
| CN111478524A (en) | Flexible conductive fiber motor shaft voltage grounding bolt device | |
| CN101447708A (en) | Brush electric motor | |
| CN106848793A (en) | With elastic conductive device variable-pitch sliding ring brush | |
| CN101305511B (en) | Brushless motor | |
| CN108448791B (en) | Generator current collection assembly | |
| CN201869042U (en) | Generator shaft current guiding device of wind generating set | |
| CN212115086U (en) | Flexible conductive fiber motor shaft voltage grounding bolt device | |
| CN201378191Y (en) | Electrified-replaceable on-line monitor of lightning arrester | |
| CN201726263U (en) | Variable frequency high-voltage motor grounding device | |
| CN201829790U (en) | Brush assembly | |
| CN220509027U (en) | Automatic monitoring device for shaft voltage of 10kV high-voltage motor | |
| CN201752092U (en) | Grounding carbon brush device of electric generator | |
| CN104702038A (en) | High-reliability insulated bearing fixing structure and method for disassembling and assembling the structure | |
| CN2541282Y (en) | Earthing device of electric locomotive | |
| CN219046440U (en) | Brushless corona motor | |
| CN2669462Y (en) | Bearing-supporting-rod type device for preventing motor stator and rotor from static discharging | |
| CN220909911U (en) | Lightning protection device for impeller of wind generating set | |
| CN2874756Y (en) | Coil type relay |
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: 20071024 |