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    • 2. 发明公开
    • AXIAL PERMANENT MAGNETIC SUSPENSION BEARING HAVING MICRO-FRICTION OR NO FRICTION OF PIVOT POINT
    • WITH MICRO摩擦或无摩擦转折点轴向永磁体安装式存储
    • EP3091241A1
    • 2016-11-09
    • EP14859583.8
    • 2014-11-06
    • Li, GuokunWang, Chaoxian
    • Li, GuokunWang, Chaoxian
    • F16C32/04H02N15/00F16C39/00
    • F16C32/0417F16C39/063H02K7/09
    • Disclosed is an axial permanent magnetic suspension bearing having micro-friction or no friction of pivot point, comprising a support bearing (4) disposed on a vertical shaft, and a permanent magnetic suspension bearing (3) disposed on the vertical shaft, wherein 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 separated from the stator pull-push magnet (31) by an axial gap to form a pull-push magnetic circuit, wherein said stator pull-push magnet (31) and said 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 annular surfaces of the annular permanent magnets, which are near the vertical shaft, of the stator pull-push magnet (31) and the rotor pull-push magnet (32) are spaced from the surface of the vertical shaft by a radial distance. 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 friction force is reduced by 98%.