CN2244113Y - Electromagnetic bearing without auxiliary bearing - Google Patents
Electromagnetic bearing without auxiliary bearing Download PDFInfo
- Publication number
- CN2244113Y CN2244113Y CN 95245561 CN95245561U CN2244113Y CN 2244113 Y CN2244113 Y CN 2244113Y CN 95245561 CN95245561 CN 95245561 CN 95245561 U CN95245561 U CN 95245561U CN 2244113 Y CN2244113 Y CN 2244113Y
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- CN
- China
- Prior art keywords
- bearing
- utility
- electromagnetic
- model
- auxiliary
- 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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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to an electromagnetic bearing without an auxiliary bearing, which belongs to the technical field of the mechanical engineering. The utility model comprises a stator, a coil, and a rotor shaft. At least one layer polymer friction reducing layer is attached to a magnetic pole or a shaft neck. Accidents of scratching, burning the shaft can not occur without the protection of the auxiliary bearing under the condition of the starting and stopping of the electromagnetic bearing or unexpected power down. The utility model can be used as a bearing component in an oil-free lubrication operating conditions, a vacuum environment, and other rotary machines with the requirements of high speed and high precision.
Description
The utility model belongs to mechanical engineering technical field, further relates to a kind of electromagnetic bearing that has polymer coating.
Electromagnetic bearing is by stator, rotor shaft, and magnetic pole, coil and peripheral control unit constitute.Stator is made by electrical pure iron or silicon steel plate.Rotor gets up at the action of a magnetic field low suspension.Contactless between rotor and stator.Controller collects the position signal of rotor, after treatment, regulates magnetic force, thus the position of control rotor shaft.Usually when machine did not turn round, rotor shaft was supported by two auxiliary bearings, with anyly directly contacting of avoiding rotor and stator (Liu Wensheng, Design of control system of active magnetic bearing, bearing, 1990, № 2, P
11～P
15), prevent in start and stop the rotor shaft that power down or fortuitous event take place down and the scratch of bearing.Yet the existence of this auxiliary bearing has increased volume, mounting complexity and the rotor quality etc. of electromagnetic bearing.The existence of this auxiliary bearing has limited the performance of the superiority of electromagnetic bearing.
The purpose of this utility model provides a kind of electromagnetic bearing polymer coating protection, that do not have auxiliary sliding bearing or rolling bearing supporting that has; can effectively avoid because of the rotor shaft of generation under start and stop, power down or the fortuitous event and the scratch of bearing; reduce the volume of electromagnetic bearing simultaneously, made electromagnetic bearing easily install.The effect that has the containing dust granules in addition owing to this polymer coating, thereby electromagnetic bearing of the present invention utilization face is wider, can be operated under the operating mode that does not very clean.
The utility model comprises stator, magnetic pole, coil, rotor shaft, between rotor journal and bearing, has the one layer of polymeric coating at least.
Stator of the present utility model adopts the silicon steel plate stacking moulding, and the pole arrangement of electromagnet is that circumferential 8 magnetic poles are arranged.Advantage is, the precision height, and easy processing, the suspending power that unit weight produces is big, the space availability ratio height, the eddy current in rotor and the stator is little.The thickness of polymer coating is no more than 100 microns.
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 implements 1 structural representation for the utility model.
Fig. 2 is the utility model embodiment 2 structural representations.
Fig. 3 is the utility model embodiment 3 structural representations.
The utility model embodiment 1 is on the magnetic pole 3 of stationary torus 1, coat one layer of polymeric coating 4 on magnetic pole gap and the coil 2.Coating thickness on the magnetic pole 3 is 50 microns, and coating in the magnetic pole gap and the coating on the magnetic pole 3 are on same cylndrical surface.Therefore, during the bearing start and stop, coating can rub with axle equably, shifts actual being between the coating of feasible friction to the axle surface.
The utility model embodiment 2 be coat at the axle journal position 6 of rotor shaft 5 polymer coated 4,50 microns of thick coatings.When electromagnetic bearing was in start and stop, rotor shaft neck 6 rubbed with bearing, and the coating 4 just magnetic pole on stator 13 shifts, actual being between the coating of feasible friction.
The utility model embodiment 3 coats one layer of polymeric coating 4 on gap on the magnetic pole 3 of stator 1, between magnetic pole and coil 2.Coating thickness on the magnetic pole 3 is less than 50 microns.Coating in the magnetic pole gap and the coating on the magnetic pole 3 are on the same cylndrical surface.In addition, coat polymer coating 4 on the axle journal position 6 of rotor shaft 5, coating thickness is less than 50 microns, and when electromagnetic bearing was in start and stop, collar 6 rubbed with bearing, made friction be between the coating.
The utility model is applied on oil-free lubrication operating mode, vacuum environment and other requirement high speeds, the highi degree of accuracy rotating machinery as engineering supporting element---electromagnetic bearing.
Claims (2)
1, the electromagnetic bearing of no auxiliary bearing, it comprises stator, magnetic pole, coil, rotor shaft, it is characterized in that: having the one layer of polymeric coating between rotor journal and bearing at least.
2, the electromagnetic bearing of no auxiliary bearing as claimed in claim 1 is characterized in that: the thickness of described polymer coating is no more than 100 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95245561 CN2244113Y (en) | 1995-10-31 | 1995-10-31 | Electromagnetic bearing without auxiliary bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95245561 CN2244113Y (en) | 1995-10-31 | 1995-10-31 | Electromagnetic bearing without auxiliary bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2244113Y true CN2244113Y (en) | 1997-01-01 |
Family
ID=33885647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95245561 Expired - Fee Related CN2244113Y (en) | 1995-10-31 | 1995-10-31 | Electromagnetic bearing without auxiliary bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2244113Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912589A (en) * | 2014-03-25 | 2014-07-09 | 南京航空航天大学 | Centripetal thrust protection bearing device for automatically eliminating clearance |
-
1995
- 1995-10-31 CN CN 95245561 patent/CN2244113Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912589A (en) * | 2014-03-25 | 2014-07-09 | 南京航空航天大学 | Centripetal thrust protection bearing device for automatically eliminating clearance |
| CN103912589B (en) * | 2014-03-25 | 2016-06-29 | 南京航空航天大学 | Automatically the centripetal thrust force protection bearing arrangement in gap is eliminated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |