Friction-free axial permanent magnet suspension bearing with pivot point
A magnetic suspension bearing, frictionless technology, applied in the direction of shaft and bearing, bearing, bearing unloading, etc., can solve the problems of small radial restoring force, large radial restoring force, difficult production and assembly, etc., and achieve high radial stability. , the effect of increasing radial restoring force and improving efficiency
Active Publication Date: 2015-05-20
李国坤 +1
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Problems solved by technology
[0004] The invention solves the technical problems of the existing non-full magnetic levitation axial bearings, such as large magnetic resistance, large magnetic steel, difficult production and assembly, small radial restoring force, and small suction force, and provides a low magnetic resistance, small magnetic steel, which is easy to produce and assemble, Axial permanent magnetic suspension bearing with fulcrum with strong radial restoring force and strong suction
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[0018] The present invention will be further described below in conjunction with the accompanying drawings.
[0019] figure 2 It is a structural representation of the present invention. figure 2 and figure 1 In comparison, simply looking at it, it is the figure 1 The heteropolar magnetic ring 3 ' of the present invention has been replaced with the permanent magnetic suspension bearing 3 of the present invention, that is, the stator pull-push magnet 31 fixed on the stator at the top of the vertical shaft 2 and the stator pull-push magnet 31 below the stator pull-push magnet 31 The rotor pull-push magnet 32 having an axial gap and forming a pull-push magnetic circuit is fixed by a soft magnetic material matrix 322 , and the soft magnetic material matrix 322 is fixed on the vertical shaft 2 . The stator pull-push magnet 31 and the rotor pull-push magnet 32 are respectively composed of two or more ring-shaped permanent magnets arranged in close contact in the radial direc...
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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%.
Description
Technical field: [0001] The invention relates to a bearing, in particular to an axial permanent magnetic suspension bearing with a fulcrum. Background technique: [0002] The invention patent 01136634.6 "Magnetic suspension bearing" applied by the first inventor of this application in 2001 involves the use of permanent magnets to form a pull-push magnetic circuit to form a fulcrum-free magnetic suspension bearing, and the invention patent 200710099004. "Magnetic full suspension bearing and combined wind power photovoltaic power generation system" also uses permanent magnets to form a pull-push magnetic circuit to form a fulcrum-free magnetic suspension bearing. However, the combination structure of the pull-push magnetic circuit used in the full permanent magnet full levitation is complex, and it is difficult to debug to achieve levitation. Doesn't work as well as a pull-push magnetic circuit does in a magnetic drive. However, the prior art usually adopts a part of the per...
Claims
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IPC IPC(8): F16C32/04
CPCF16C32/0417F16C39/063F16C2360/31H02K7/09
Inventor 李国坤王朝贤
Owner 李国坤