CN202488122U - Current grounding device for motor shaft - Google Patents
Current grounding device for motor shaft Download PDFInfo
- Publication number
- CN202488122U CN202488122U CN2012200562429U CN201220056242U CN202488122U CN 202488122 U CN202488122 U CN 202488122U CN 2012200562429 U CN2012200562429 U CN 2012200562429U CN 201220056242 U CN201220056242 U CN 201220056242U CN 202488122 U CN202488122 U CN 202488122U
- Authority
- CN
- China
- Prior art keywords
- motor shaft
- bearing
- conducting ring
- brush
- current grounding
- 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 current grounding device for a motor shaft, and belongs to the technical field of current grounding of motor shafts. By the current grounding device for the motor shaft, damage to a bearing can be prevented, and the service life of the bearing can be prolonged. The technical scheme is that: the current grounding device for the motor shaft comprises the motor shaft, a conducting ring and an electric brush; the bearing is sleeved on the motor shaft, and is arranged in a shell; an end cover is sleeved on the motor shaft, and is fixedly connected to the shell through bolts; the conducting ring is sleeved on the shaft end of the motor shaft; and the electric brush is arranged on the end cover, contacts the conducting ring, and is grounded through a grounding wire. Current flowing through the bearing is grounded, so that the bearing can be prevented from being damaged, the service life of the bearing is prolonged, and cost is lowered.
Description
Technical field
The utility model motor shaft electric current earthing device belongs to motor shaft electric current grounding technology field.
Background technology
Because motor is powerful variable-frequency motor, three types high frequency shaft current: circulating current, rotating shaft earth current and capacitive discharge electric current all might exist.When shaft current was big, electric current flow through bearing, can cause bigger damage to bearing, reduced the useful life of bearing.
The utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved provides a kind of damage of bearings that prevents, prolongs the bearing motor shaft electric current earthing device in useful life.
For solving the problems of the technologies described above, the technical scheme that is adopted is: motor shaft electric current earthing device comprises motor shaft, conducting ring and brush; Be set with bearing on the motor shaft and be installed in the housing; End cap is sleeved on the motor shaft and through bolt and is fastened on the housing, is set with conducting ring on the axle head of motor shaft, and brush is installed on the end cap; Described brush contacts with conducting ring, and brush passes through ground connection.
The utility model is compared the beneficial effect that is had with prior art: be with conducting ring on the motor shaft and contacting with brush on the end cap; Brush ground connection will be flow through the electric current ground connection of bearing, prevent that bearing from being damaged by electric current; Prolong the useful life of bearing, reduced cost.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 is motor shaft, and 2 is bearing, and 3 is end cap, and 4 is housing, and 5 is conducting ring, and 6 is brush.
Embodiment
As shown in Figure 1, the utility model motor shaft electric current earthing device comprises motor shaft 1, conducting ring 5 and brush 6; Be set with bearing 2 on the motor shaft 1 and be installed in the housing 4; End cap 3 is sleeved on the motor shaft 1 and through bolt and is fastened on the housing 4, is set with conducting ring 5 on the axle head of motor shaft 1, and brush 6 is installed on the end cap 3; Described brush 6 contacts with conducting ring 5, and brush 6 passes through ground connection.
Brush is to do sliding contact and form a kind of conductive component that is electrically connected with movement parts.
The course of work: open machine operation, motor shaft 1 rotates, and drives conducting ring 5 and rotates; Do sliding contact with two brushes 6; Form conducting function, the electric current that will flow through bearing 2 is through conducting ring 5 and brush 6 ground connection, when having prevented that effectively shaft current is excessive; Electric current flows through bearing bearing is damaged, and prolongs bearing useful life.
Claims (1)
1. motor shaft electric current earthing device; Comprise motor shaft (1), conducting ring (5) and brush (6); Be set with bearing (2) on the motor shaft (1) and be installed in the housing (4); End cap (3) is sleeved on motor shaft (1) and goes up and be fastened on the housing (4) through bolt, it is characterized in that: be set with conducting ring (5) on the axle head of motor shaft (1), brush (6) is installed on the end cap (3); Described brush (6) contacts with conducting ring (5), and brush (6) passes through ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200562429U CN202488122U (en) | 2012-02-21 | 2012-02-21 | Current grounding device for motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200562429U CN202488122U (en) | 2012-02-21 | 2012-02-21 | Current grounding device for motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488122U true CN202488122U (en) | 2012-10-10 |
Family
ID=46962513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200562429U Expired - Fee Related CN202488122U (en) | 2012-02-21 | 2012-02-21 | Current grounding device for motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488122U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516143A (en) * | 2013-10-23 | 2014-01-15 | 中达电机股份有限公司 | Shaft current eliminating device |
| CN107404198A (en) * | 2017-08-29 | 2017-11-28 | 广东威灵电机制造有限公司 | Motor |
| CN112186975A (en) * | 2019-07-02 | 2021-01-05 | 中车株洲电力机车研究所有限公司 | Motor shaft current eliminating structure and motor |
-
2012
- 2012-02-21 CN CN2012200562429U patent/CN202488122U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516143A (en) * | 2013-10-23 | 2014-01-15 | 中达电机股份有限公司 | Shaft current eliminating device |
| CN107404198A (en) * | 2017-08-29 | 2017-11-28 | 广东威灵电机制造有限公司 | Motor |
| CN112186975A (en) * | 2019-07-02 | 2021-01-05 | 中车株洲电力机车研究所有限公司 | Motor shaft current eliminating structure and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SIEMENS LARGE SPECIAL MOTOR (SHANXI) CO., LTD. Free format text: FORMER OWNER: SHANXI EXPLOSION-PROOF MOTOR GROUP CO., LTD. Effective date: 20130506 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130506 Address after: 046011 No. 191 Chengbei West Street, Shanxi, Changzhi Patentee after: SIEMENS large special motor (Shanxi) Co., Ltd. Address before: 046011 No. 191 Chengbei West Street, Shanxi, Changzhi Patentee before: Shanxi Explosion-Proof Motor (Group) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180711 Address after: 100102 No. 7 South Central Road, Chaoyang District, Beijing, China Patentee after: Simens Co., Ltd. (China) Address before: 046011 West Street, Changzhi City, Shanxi Province, No. 191 Patentee before: SIEMENS large special motor (Shanxi) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190626 Address after: Munich, Germany Patentee after: Siemens AG Address before: 100102 No. 7 South Central Road, Chaoyang District, Beijing, China Patentee before: Simens Co., Ltd. (China) |
|
| 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: 20121010 Termination date: 20200221 |