SU1288393A1 - Magnetic bearing - Google Patents

Abstract

The invention relates to mechanical engineering, namely to contactless passive rotary bearings made on permanent magnets. The purpose of the invention is to increase the specific energy performance of a magnetic bearing. The magnetic bearing comprises a movable part fixed on the shaft 1 of a magnet of a soft material and a fixed part fixed on the case 2 of a magnet of a soft material. The movable and stationary parts of the bearings are made in the form of a series of 4 8 main annular permanent magnets 3 and 7, respectively, facing each other by like poles, between which are placed annular pole pieces 4 and 8, respectively. On the side of the shaft 1 and the body 2, the poles of the annular pole pieces 4 and 8 are adjacent to the poles of the additional annular permanent magnets 5 and 9, respectively, having the same polarity with the poles of the main annular permanent magnets 3 and 7, respectively, adjacent to these pole pieces 4 and 8 The other poles of the additional annular permanent magnets 5 and 9 are fixed to the shaft 1 and the housing 2, respectively. The main ring permanent magnets 3 and 7 are arranged with a gap relative to the shaft 1 and the body 2, respectively. At the poles of the extreme main ring permanent magnets, pole tips 6 and 10 are fixed. 1 Il. (L th 00 00 with so with

Description

The invention relates to mechanical engineering, namely to contactless passive supports on permanent magnets, intended for suspending rotating bodies.

The purpose of the invention is to increase the specific energy indicators.

The drawing shows a magnetic bearing in the case of a radial working gap, section.

The magnetic bearing contains a movable part fixed on the shaft 1 of a magnet of a dummy material and fixed on the case 2 of a magnetic material.

The movable part of the bearing is made in the form of a series of main annular permanent magnets 3 facing each other with like poles, between which annular pole tips 4 are placed. On the shaft 1 side, the poles of the additional pole 4 magnets 5 having the same polarity with the poles of the main annular permanent magnets 3 adjacent to this pole tip 4. The other poles of the additional annular permanent magnets 5 are fixed on the shaft 1. Main the annular permanent magnets 3 are disposed with a gap relative to the shaft 1. At the extreme poles of the main annular permanent magnets 3 are fixed pole pieces 6. I

The stationary part of the bearing is made in the form of a series of main annular permanent magnets 7, facing each other with the same poles, between which annular pole pieces 8 are placed.

The main ring permanent magnets 7 are installed with a gap of relays magnets facing each other separately of the housing 2. On the housing 2 side, the poles of the additional ring permanent magnets 9 having the same polarity with the poles of the main ring permanent magnets 7, adjacent to this pole tip 8. On the poles of the extreme main ring permanent magnets 7 pole tips are fixed 10. Ring pole tips 4 and 8, placed between the same main poles annular permanent magnets 3 and 7

poles of the same name, between which ring-shaped pole pieces are placed, with poles of additional ring-shaped permanent magnets fixed by other poles of the main ring with poles of the same poles of the main ring that are adjacent to the poles of the main ring permanent magnets adjacent to the body side. The permanent magnets of the movable and stationary parts of the bearing are mounted against each other, characterized in that.

five

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five

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respectively, the moving and bearing parts of the bearing are mounted against each other.

The magnetic bearing works as follows.

The magnetic fluxes of the main ring permanent magnets 3 and 7 are closed at the pole ends of the ends 4 and 8 through the air gap. Since the magnetic fluxes coming out of the pole pieces 4 and B are directed oppositely, a repulsive force acts on the shaft 1 from the stationary part of the bearing. Additional ring permanent magnets 5 and 9 create magnetic fluxes, respectively, folding with the magnetic fluxes of the main ring permanent magnets 3 and 7 and prevent the magnetic flux from the main ring permanent magnets 3 and 7 outside the gap between the movable and stationary parts of the bearing. The magnetic flux of two adjacent additional annular permanent magnets 5 is closed along the shaft, and the constant of magnets 9 through the case 2.

Claims (1)

Claims of Magnetic Bearing Containing. a movable part fixed on the shaft, made in the form of a series of main annular permanent magnets facing each other with the same poles, between which annular pole lugs are placed adjacent to them from the shaft side with the poles of the same annular permanent magnet with the same poles magnets mounted on the shaft by other poles, and fixed on the body fixed part, containing a number of main annular constant poles of the same name, between which ring-shaped pole pieces are located, with poles of additional ring-shaped permanent magnets attached to the poles of the main ring permanent magnets adjacent to the main ring permanent magnets, fixed by other poles on the body, with the pole tips placed between the same poles of the main ring permanent magnets and fixed bearing parts are mounted opposite each other, characterized in that. 312883934 that, in order to increase the specific energy permanent magnets of the moving indicators, the shaft and the main and fixed parts of the bearing, the bearing part is made of magnetic materials with a gap, respectively, of the displaced material, and the main shaft and housing.