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Title:
AXIAL PERMANENT MAGNETIC SUSPENSION BEARING HAVING MICRO-FRICTION OR NO FRICTION OF PIVOT POINT
Document Type and Number:
WIPO Patent Application WO/2015/067191
Kind Code:
A1
Abstract:
Disclosed is an axial permanent magnetic suspension bearing having micro-friction or no friction of the pivot point, comprising a support bearing (4) provided on a shaft serving as vertical, and a permanent magnetic suspension bearing (3) provided on the vertical shaft. The permanent magnetic suspension bearing (3) comprises a stator pull-push magnet (31) provided on a stator (1) and a rotor pull-push magnet (32) correspondingly provided on a rotor (2) by means of a soft magnetic material base (322) and axially separated from the stator pull-push magnet (31) to form a pull-push magnetic circuit. The stator pull-push magnet (31) and the rotor pull-push magnet (32) are respectively composed of two or more than two annular permanent magnets provided as radially closely fitting and with magnetic poles alternating in the radial direction, and upper and lower annular permanent magnets correspondingly in the same radial position have the same magnetic strength and inverse polarity. The stator pull-push magnet (31) and the rotor pull-push magnet (32) are radially spaced from the surface of the vertical shaft near an annular surface of the annular permanent magnets of the vertical shaft that is near the vertical shaft. The present invention has small magnets, is good to manufacture, is good to install, and has a high radial restoring force, while the force of attraction is great and frictional force is reduced by 98%.

Inventors:
LI, Guokun (Room102, No.30 Wangma lane Chengguan Distric, Lanzhou Gansu 0, 730030, CN)
WANG, Chaoxian (Room102, No.30 Wangma lane Chengguan Distric, Lanzhou Gansu 0, 730030, CN)
Application Number:
CN2014/090456
Publication Date:
May 14, 2015
Filing Date:
November 06, 2014
Export Citation:
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Assignee:
LI, Guokun (Room102, No.30 Wangma lane Chengguan Distric, Lanzhou Gansu 0, 730030, CN)
WANG, Chaoxian (Room102, No.30 Wangma lane Chengguan Distric, Lanzhou Gansu 0, 730030, CN)
International Classes:
F16C32/04; F16C39/06; H02N15/00
Foreign References:
CN101034861A2007-09-12
CN101303046A2008-11-12
CN2881140Y2007-03-21
DE4210741A11993-10-14
CN2632381Y2004-08-11
CN1287230A2001-03-14
CN1350128A2002-05-22
CN01136634A2001-10-23
CN200710099004A2007-05-08
Other References:
See also references of EP 3091241A4
Attorney, Agent or Firm:
HAIHONG JIACHENG INTELLECTUAL PROPERTY & PARTNERS (9th Floor, Tower B Zhongguancun Intellectual Property Mansion,No.21, South Road Haidian, Haidian District, Beijing 0, 100080, CN)
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