CN203774985U - Device capable of eliminating shaft current - Google Patents
Device capable of eliminating shaft current Download PDFInfo
- Publication number
- CN203774985U CN203774985U CN201420178437.XU CN201420178437U CN203774985U CN 203774985 U CN203774985 U CN 203774985U CN 201420178437 U CN201420178437 U CN 201420178437U CN 203774985 U CN203774985 U CN 203774985U
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- CN
- China
- Prior art keywords
- shaft current
- conducting rod
- periphery
- rotor
- motor
- 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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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model provides a device capable of eliminating shaft current. The device comprises a rotor and a bearing. The device is characterized in that rotating shafts arranged on the two ends of the rotor are respectively provided with a metal circular disc. The two metal circular discs are connected by a conducting rod. The effects of the device are that: 1. shaft current can be effectively eliminated, the bearing can be protected from being damaged by shaft current and the service life a motor is prolonged; and 2. normal operation of the motor is not influenced.
Description
technical field:
The utility model relates to the servicing unit in a kind of motor, particularly a kind of device of eliminating shaft current.
background technology:
Existing motor is mainly comprised of casing, stator, rotor, bearing; We know, in the running of motor, the two ends of rotor of motor can produce the voltage of one hundreds of millivolts, and this voltage can produce a shaft current between two bearings and motor shaft, and the existence of shaft current can cause damage to the bearing of motor; Existing two kinds of motors of eliminating shaft current, a kind of, two bearings of motor have at least one to insulate, and it can stop the infringement of shaft current to bearing; Another kind is in motor, to be provided with carbon brush, by carbon brush, shaft current is dredged away and is protected bearing to be without prejudice; The deficiency that the former in use exists is that cost of manufacture is high, can reduce the competitiveness of product; The deficiency that the latter in use exists is, the carbon brush carbon dust that in use can drop, impacts motor rotation.
summary of the invention:
The purpose of this utility model is, for existing motor existing deficiency in the technical scheme of eliminating shaft current, and it is low to propose a kind of cost, and it is convenient to implement, and motor is normally moved to the device without the shaft current eliminated of impact.
By following technical proposals, can realize the utility model object, a kind of device of eliminating shaft current, comprises rotor, bearing, it is characterized in that, is respectively equipped with a rosette in the rotating shaft of two ends of rotor, between two rosettes, by conducting rod, is connected.
The cross section structure of conducting rod is: center is the good Metallic rod of conduction, and Metallic rod periphery is insulating barrier, and insulating barrier periphery is copper foil layer, and copper foil layer periphery is the iron wire spiral coil that magnetic conductivity is good, and iron wire spiral coil periphery is insulating barrier.
When motor winding is 2 utmost point 6 pole fields layout, conducting rod is two, positioned opposite;
When motor winding is 4 utmost point 8 pole fields while arranging, conducting rod is three, with the Y shape hexagonal angle degree that staggers mutually, arranges.
Effect of the present utility model is: 1, can effectively eliminate shaft current, protection bearing is not subject to the infringement of shaft current, extends the useful life of motor; This because, in the rotating shaft at this rotor two ends, be respectively equipped with a rosette, between two rosettes, by conducting rod, connected, the shaft current that motor rotation produces, between rosette and conducting rod, form a closed circuit, by short circuit, eliminate, thereby can not impact bearing; 2, can not impact the normal operation of motor, although shaft current is eliminated by short circuit, can produce certain heat, this heat is very small, and it can be ignored on the impact of motor rotation; In addition, because conducting rod is provided with, eliminate the Copper Foil of high frequency magnetic field impact and the iron wire spiral coil of shielding low frequency magnetic field, thereby magnetic field can not exert an influence to conducting rod.
Below in conjunction with drawings and Examples, the utility model is further set forth:
Accompanying drawing explanation:
Accompanying drawing 1 is easy structure schematic diagram of the present utility model;
Accompanying drawing 2 is A～A place cutaway view 1 in accompanying drawing 1;
Accompanying drawing 3 is A～A place cutaway view 2 in accompanying drawing 1.
Embodiment:
Referring to accompanying drawing 1,2, a kind of device of eliminating shaft current, comprises rotor 1, bearing 2, rosette 3, conducting rod 4; Two rosettes 3 are located at respectively in the rotating shaft at rotor 1 two ends, between two rosettes 3, by conducting rod 4, are connected; In the hole of conducting rod 4 from rotor 1, pass.The cross section structure of conducting rod 4 is: center is the good Metallic rod of conduction, Metallic rod periphery is insulating barrier, insulating barrier periphery is copper foil layer, copper foil layer periphery is the iron wire spiral coil that magnetic conductivity is good, iron wire spiral coil periphery is insulating barrier (after installation, the Copper Foil of screen and iron wire must not have conducting with any position).When motor winding is 2 utmost point 6 pole fields layout, conducting rod 4 is two, positioned opposite.
Referring to accompanying drawing 1,3, a kind of device of eliminating shaft current, comprises rotor 1, bearing 2, rosette 3, conducting rod 4; Two rosettes 3 are located at respectively in the rotating shaft at rotor 1 two ends, between two rosettes 3, by conducting rod 4, are connected; In the hole of conducting rod 4 from rotor 1, pass.The cross section structure of conducting rod 4 is: center is the good Metallic rod of conduction, and Metallic rod periphery is insulating barrier, and insulating barrier periphery is copper foil layer, and copper foil layer periphery is the iron wire spiral coil that magnetic conductivity is good, and iron wire spiral coil periphery is insulating barrier.When motor winding is 4 utmost point 8 pole fields while arranging, conducting rod 4 is three, with the Y shape hexagonal angle degree that staggers mutually, arranges.
Claims (4)
1. can eliminate a device for shaft current, comprise rotor, bearing, it is characterized in that, in the rotating shaft of two ends of rotor, be respectively equipped with a rosette, between two rosettes, by conducting rod, be connected.
2. by the device of eliminating shaft current claimed in claim 1, it is characterized in that, the cross section structure of conducting rod is: center is the good Metallic rod of conduction, Metallic rod periphery is insulating barrier, insulating barrier periphery is copper foil layer, copper foil layer periphery is the iron wire spiral coil that magnetic conductivity is good, and iron wire spiral coil periphery is insulating barrier.
3. by the device of the shaft current eliminated described in claim 1 or 2, it is characterized in that, described conducting rod is two, positioned opposite.
4. by the device of the shaft current eliminated described in claim 1 or 2, it is characterized in that, described conducting rod is three, with the Y shape hexagonal angle degree that staggers mutually, arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420178437.XU CN203774985U (en) | 2014-04-04 | 2014-04-04 | Device capable of eliminating shaft current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420178437.XU CN203774985U (en) | 2014-04-04 | 2014-04-04 | Device capable of eliminating shaft current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774985U true CN203774985U (en) | 2014-08-13 |
Family
ID=51292133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420178437.XU Expired - Fee Related CN203774985U (en) | 2014-04-04 | 2014-04-04 | Device capable of eliminating shaft current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774985U (en) |
-
2014
- 2014-04-04 CN CN201420178437.XU patent/CN203774985U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140813 Termination date: 20160404 |