CN102042325A - Active magnetic suspension bearing main shaft symmetrically and invisibly magnetized by permanent magnets - Google Patents
Active magnetic suspension bearing main shaft symmetrically and invisibly magnetized by permanent magnets Download PDFInfo
- Publication number
- CN102042325A CN102042325A CN2009102330429A CN200910233042A CN102042325A CN 102042325 A CN102042325 A CN 102042325A CN 2009102330429 A CN2009102330429 A CN 2009102330429A CN 200910233042 A CN200910233042 A CN 200910233042A CN 102042325 A CN102042325 A CN 102042325A
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- main shaft
- permanent magnets
- magnetized
- concentrating flux
- magnetic
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Abstract
The invention relates to an active magnetic suspension bearing main shaft symmetrically and invisibly magnetized by permanent magnets, comprising a concentrating flux main shaft (1), permanent magnets (2), electromagnets (3), a concentrating flux sleeve (4) and the like, wherein the two permanent magnets (2) are installed inside the concentrating flux main shaft (1) and have opposite polarities; the outer rings of the two permanent magnets (2) are provided with the concentrating flux sleeve (4); and the four electromagnets (3) are installed around the concentrating flux sleeve (4).
Description
Affiliated technical field
The present invention relates to the stealthy magnetized Active Magnetic Suspending Bearing main shaft of a kind of permanent magnetism symmetry, this main shaft is a plurality of permanent-magnetic clamps to be installed in that the magnetic conduction axon is inner, in the periphery of permanent-magnetic clamp one deck concentrating flux sleeve is arranged, and connects together with main shaft; The concentrating flux sleeve of periphery can avoid permanent-magnetic clamp directly to be heated like this, can take away the part heat simultaneously, helps main shaft like this and works under the condition of high temperature; Inhale with ACTIVE CONTROL electromagnetism iron phase from the main shaft of carrying magnetic this moment, just can realize the magnetic balance of main shaft under the high speed rotating state.Belong to the magnetic levitation technology field.
Background technique
Radially ACTIVE CONTROL magnetic suspension bearing technology is that symmetry was inhaled mutually around four electromagnet of dependence carried out a magnetic conduction main shaft, realizes the magnetic suspension of main shaft.Magnet case only is magnetized, and after the magnetization, just might produce suction with electromagnet.After magnet case main axis rotation speed surpassed the magnet case magnetizing velocity, the magnet case main shaft just can not be magnetized fully, will influence and electromagnet between suction.The magnet case main shaft is when high speed rotating simultaneously, and its circumferential surface and the electromagnet magnetic line of force produce movement in vertical direction, and just cutting magnetic line can produce induction field, and this induction field also can influence the magnetizing velocity of magnetic conduction main shaft and fully magnetization.Strengthen the magnetic field of electromagnet in order to keep the state of suspension of main shaft this moment, and original idea is in order to improve the Suspension Control power of electromagnet to main shaft.But the electromagnetic field that strengthens can make the induction field of main shaft further increase, and also just further reduces the magnetizing velocity and the magnetization efficient of main shaft, and electromagnet is reduced the Suspension Control power of main shaft.So the whole world does not all have 100,000 rev/mins magnetic suspension motor.
Summary of the invention
Principle of the present invention is in the magnetic conduction main shaft permanent magnets to be installed, making the magnetic conduction main shaft be carried permanent magnet in advance magnetizes, magnetizes, utilize this main shaft that had magnetized then, inhale with ACTIVE CONTROL electromagnetism iron phase, like this after the high speed rotating of main shaft, main shaft just can keep the magnetic balance of self, and the suction between main shaft and the electromagnet can not change yet.
When main shaft was at high temperature worked, permanent magnets was demagnetized by high temperature, and we are at concentrating flux sleeve of permanent magnets periphery cover.
Description of drawings
Fig. 1 is the radial section tectonic maps of the stealthy magnetized Active Magnetic Suspending Bearing main shaft of permanent magnetism symmetry of the present invention.
The present invention will be further described below in conjunction with accompanying drawing.
Among Fig. 1, magnetic conduction main shaft (1), permanent magnets (2), electromagnet (3) and concentrating flux sleeve (4) etc.; Two permanent magnets (2) are installed in magnetic conduction main shaft (1) inside, and polarity is relative; There is concentrating flux sleeve (4) two permanent magnets (2) outer ring; Four electromagnet (3) be installed in concentrating flux sleeve (4) around.
Because concentrating flux sleeve (4) is directly inhaled mutually with electromagnet (3), magnetic conduction main shaft (1) also can be selected non-magnetic material for use.
Claims (1)
1. the stealthy magnetized Active Magnetic Suspending Bearing main shaft of permanent magnetism symmetry is characterized in that: magnetic conduction main shaft (1), permanent magnets (2), electromagnet (3) and concentrating flux sleeve (4) etc.; Two permanent magnets (2) are installed in magnetic conduction main shaft (1) inside, and polarity is relative; There is concentrating flux sleeve (4) two permanent magnets (2) outer ring; Four electromagnet (3) be installed in concentrating flux sleeve (4) around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102330429A CN102042325A (en) | 2009-10-19 | 2009-10-19 | Active magnetic suspension bearing main shaft symmetrically and invisibly magnetized by permanent magnets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102330429A CN102042325A (en) | 2009-10-19 | 2009-10-19 | Active magnetic suspension bearing main shaft symmetrically and invisibly magnetized by permanent magnets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042325A true CN102042325A (en) | 2011-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102330429A Pending CN102042325A (en) | 2009-10-19 | 2009-10-19 | Active magnetic suspension bearing main shaft symmetrically and invisibly magnetized by permanent magnets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601423A (en) * | 2016-07-11 | 2017-04-26 | 岳阳市永金起重永磁铁有限公司 | Single-magnetic circuit multi-functional switch type permanent magnet unit |
-
2009
- 2009-10-19 CN CN2009102330429A patent/CN102042325A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601423A (en) * | 2016-07-11 | 2017-04-26 | 岳阳市永金起重永磁铁有限公司 | Single-magnetic circuit multi-functional switch type permanent magnet unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110504 |