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Passive magnetic bearing and assemblies thereof

A magnetic levitation bearing and passive technology, applied in the field of magnetic bearings, can solve the problems of high difficulty and high cost in the manufacture of magnetic levitation bearings

Active Publication Date: 2013-05-01
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a low-cost and easy-to-manufacture passive magnetic suspension bearing and its components for the defects of high difficulty and high cost in the preparation of magnetic suspension bearings in the prior art

Method used

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  • Passive magnetic bearing and assemblies thereof
  • Passive magnetic bearing and assemblies thereof
  • Passive magnetic bearing and assemblies thereof

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Such as figure 1 As shown, the figure shows a cross-sectional view of a passive magnetic suspension bearing assembly according to an embodiment of the present invention. The passive magnetic suspension bearing assembly includes a rotating shaft 300 and a passive magnetic suspension bearing fixedly passed through the rotating shaft 300 and two non-magnetic bearings 500. The passive magnetic suspension bearing is arranged between the two non-magnetic bearings 500 (one of which is figure 1 Not shown in , located at the other end of the dynamic magnetic suspension bearing), and the passive magn...

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Abstract

The invention discloses a passive magnetic bearing and assemblies thereof. The passive magnetic bearing comprises a rotating shaft and a rotor assembly and one or more stator assemblies which are arranged on the rotating shaft. The stator assembly comprises a disk-shaped stator disc and a plurality of same block permanent magnets embedded in the stator disc; a bottom surface of the stator disc is provided with a plurality of sets of concentric annular stator grooves used for installation of the permanent magnets; each set of stator grooves comprises four annular stator grooves, permanent magnets of same polarity are disposed in a first stator groove and a fourth stator groove in terms of radial column numbers along the stator disc, and permanent magnets of same polarity but with polarity different from the polarity of the permanent magnets disposed in the first stator groove and the fourth stator groove are disposed in a second stator groove and a third stator groove. The rotor assembly comprises a disk-shaped rotor disc and a plurality of same block permanent magnets embedded in the rotor disc; and the bottom surface of the rotor disc is provided with rotor grooves in one-to-one correspondence to the stator grooves for installation of the permanent magnets. The passive magnetic bearing provided by the invention has the advantages of low cost, easy preparation and stable operation.

Description

technical field [0001] The invention relates to a magnetic bearing, in particular to a passive magnetic suspension bearing and a passive magnetic suspension bearing component thereof. Background technique [0002] Current vertical axis wind turbines, flywheel rotors, motors, generators, and other rotatable components typically use ball or roller bearings for support. These support bearings secure the position of rotating parts against radial and axial forces. However, one of the common disadvantages of these bearings is friction, noise and strain problems. [0003] Magnetic bearings use a magnetic field to transmit the forces acting on the bearing, providing contactless and low-friction motion. Based on such obvious advantages, this technology is widely used. Still, the technology has limitations stemming from magnetic moments. When it is applied to the magnetic levitation system, it is difficult to achieve a durable and stable balance between magnetic force and external...

Claims

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Application Information

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IPC IPC(8): F16C32/04
Inventor 杨坤杨洪兴吕琳傅卫农
Owner THE HONG KONG POLYTECHNIC UNIV
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