Preloaded radial permanent magnet bearing

A permanent magnet bearing and preload technology, applied in the direction of bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of inconvenient installation and low rigidity of permanent magnet suspension bearings, and achieve the effect of reducing inconvenience, high rigidity and low vibration

Inactive Publication Date: 2012-07-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to propose a new industrially applicable preload radial permanent magnetic suspension bearing for the shortcomings of low rigidity and inconvenient installation of the current permanent magnetic suspension bearing

Method used

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  • Preloaded radial permanent magnet bearing
  • Preloaded radial permanent magnet bearing
  • Preloaded radial permanent magnet bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: see figure 1 , This pre-loaded radial permanent magnetic bearing includes an outer ring (3), an inner ring (6), two side rings (2), two static permanent magnet ring groups (1) and a moving permanent magnet ring group ( 5), characterized in that: the two side rings (2) are respectively fixed on both sides of the outer ring (3) by hexagon socket screws (11); the two static and permanent magnetic ring groups (1) are respectively embedded in In the annular grooves of the two side rings (2); the moving permanent magnet ring group (5) is fixed to the inner ring (6) by a set screw (4) and is located in the two static and permanent magnet ring groups (1) ) Between; each of the static permanent magnet ring group (1) is composed of two large semicircular permanent magnet rings A, B and two small semicircular permanent magnet rings C, D that are combined up and down. Two circular permanent magnet rings with phase sleeves, the eight large and small semicircular permanent...

Embodiment 2

[0034] Second embodiment: This embodiment is basically the same as the first embodiment, and the special features are as follows: when the above-mentioned permanent magnetic bearing is used in industry, each permanent magnet ring and two side rings (2) and outer ring (3) (see Figure 8 A magnetic sheet (10) is embedded between the inner ring (6) and the inner ring (6). The magnetic sheet (10) is composed of a material with high magnetic permeability (such as soft iron, silicon steel sheet, etc.), which makes the dynamic and static permanent magnetic ring The distribution of magnetic lines of force is regular, the magnetic force of the permanent magnet ring is increased under the same volume, and the magnetic shielding of the entire permanent magnetic bearing is also realized, which reduces the influence of the outside on the internal magnetic field and increases the stability of the magnetic field.

[0035] A ceramic ball bearing (9) is installed between the two side rings (2) and...

Embodiment 3

[0041] Example three: see Figure 8 This embodiment is basically the same as the first embodiment. The special feature is that the moving permanent magnet ring group (5) is composed of two permanent magnet rings with the same size and the same axial magnetization direction. In between, there is a static permanent magnet ring group (1) fixedly connected to the inner middle of the outer ring (3).

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Abstract

The invention relates to a preloaded radial permanent magnet bearing which comprises side rings, an external ring, an internal ring, a magnetism conducting sheet, a ceramic ball component, a static permanent magnet ring set and a movable permanent magnet ring set; the static permanent magnet ring set consists of eight semi-circular permanent magnet rings respectively embedded in two side rings; and the movable permanent magnet ring set consists of an integrated permanent magnet ring and is positioned on the internal ring by set screws. The axial clearance between the static permanent magnet ring set and the movable permanent magnet ring set is constant and equal and is positioned by the ceramic ball component; the ceramic ball component consists of a housing washer and a ceramic ball; and the magnetism conducting sheet is made from a material with high magnetic conductivity. The preload of the bearing is realized by the permanent magnet rings with opposite magnetic pole directions, the bearing capacity of the permanent magnet bearing is greatly increased, the conventional mechanical bearing is replaced by a ceramic ball self-lubricating system with extremely small frictional force, and the bearing is simple and reliable in structure, convenient and fast to use, and convenient for serialized production.

Description

technical field [0001] The invention relates to a preload radial permanent magnetic bearing, which is a conveniently used industrial radial permanent magnetic suspension bearing. Background technique [0002] The permanent magnetic levitation bearing uses the force between the permanent magnets to realize the stable suspension of the suspended object in some degrees of freedom. Compared with active magnetic suspension bearings, passive permanent magnetic suspension bearings do not require an active electronic control system, which not only saves power consumption, but more importantly reduces complex control system components that may fail, making the system more reliable and has a longer service life. Permanent magnetic suspension bearings can be combined with electromagnetic bearings, mechanical bearings, air bearings and superconductor magnetic bearings to form various forms of magnetic suspension bearing systems, which have broad application prospects. [0003] The stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04
Inventor 张钢殷庆振阮娟张雪蒋德得李明彦张坚
Owner SHANGHAI UNIV
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