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Magnetic suspension bearing

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  • Publication Date:
    August 28, 2007
  • معلومة اضافية
    • Patent Number:
      7,262,531
    • Appl. No:
      10/415235
    • Application Filed:
      October 25, 2001
    • نبذة مختصرة :
      The present invention relates to a magnetic suspension bearing supported by magnetic force, which comprises one or more magnets fixed on a shaft directly or indirectly which can rotate with said shaft, and matching magnets provided in a certain space, wherein the magnetic polarity and magnitude of magnetic force of the matching magnets match with the magnetic polarity and magnitude of magnetic force of said one or more magnets to achieve the full suspension rotation of said shaft, and said magnets and/or matching magnets are permanent magnets. The present invention is of simple design and large power, with many other advantages such as great rigidity and great load-bearing capability and widely use in various fields.
    • Inventors:
      Li, Guokun (Lanzhou City, Gansu Province 730030, CN); Li, Xiaopeng (Lanzhou City, Gansu Province 730030, CN); Li, Xiaobo (Lanzhou City, Gansu Province 730030, CN)
    • Claim:
      1. A magnetic suspension bearing, comprising: an inner magnetic ring secured to a shaft, the inner magnetic ring including at least one permanent magnet; an outer magnetic ring around the inner magnetic ring and radially spaced from the inner magnetic ring, the outer magnetic ring including at least one permanent matching magnet, wherein the magnetic polarity and magnitude of magnetic force of the matching magnet of said outer magnetic ring matches with the magnetic polarity and magnitude of magnetic force of said magnet of said inner magnetic ring to achieve the full suspension rotation of said shaft and radial alignment of said shaft with said outer magnetic ring; and left-side and right-side permanent magnets on left and right sides of the inner and outer magnetic rings, respectively, serving to maintain axial stability of the inner and outer magnetic rings relative to one another, the left-side and right-side permanent magnets having the same polarity as one of the inner magnetic ring or the outer magnetic ring, the one of the inner magnetic ring or the outer magnetic ring being repelled by the left-side and the right-side permanent magnets.
    • Claim:
      2. The magnetic suspension bearing as claimed in claim 1 , characterized in that said inner and outer magnetic rings are ring-shaped permanent magnets.
    • Claim:
      3. The magnetic suspension bearing as claimed in claim 1 , wherein the left-side and right-side permanent magnets are ring-shaped.
    • Claim:
      4. The magnetic suspension bearing as claimed in claim 1 , further comprising a magnetizer, the outer magnetic ring and left-side and right-side permanent magnets being located on the magnetizer.
    • Current U.S. Class:
      310/905
    • Patent References Cited:
      5017819 May 1991 Patt et al.
      5506459 April 1996 Ritts
      5783886 July 1998 Hong
      6153958 November 2000 Hull et al.
    • Primary Examiner:
      Lam, Thanh
    • Attorney, Agent or Firm:
      Blakely, Sokoloff, Taylor & Zafman
      De Klerk, Stephen M.
    • الرقم المعرف:
      edspgr.07262531