Invention Grant
US06339920B1 Rotation-resisting wire rope 失效
耐旋转钢丝绳

  • Patent Title: Rotation-resisting wire rope
  • Patent Title (中): 耐旋转钢丝绳
  • Application No.: US09639932
    Application Date: 2000-08-17
  • Publication No.: US06339920B1
    Publication Date: 2002-01-22
  • Inventor: Yasuo Yokoyama
  • Applicant: Yasuo Yokoyama
  • Priority: JP11-241663 19990827
  • Main IPC: D02G302
  • IPC: D02G302
Rotation-resisting wire rope
Abstract:
A wire rope for a heavy-load crane, such as a ladle crane is provided that is not only almost rotation-resistant but is also unlikely to be broken by wear and fatigue of wires. The rotation-resisting wire rope has a plurality of side strands. In side each strand, wires are laid in the same direction as the lay of core strand wires, around the periphery of a core strand. The side strands are laid in a direction opposite to the lay of the core strand wires so as to form the wire rope. The side strands preferably have a smaller pitch multiple than a pitch multiple of the wire rope. The ratio between a diameter of the side strands and a diameter of the core strand is preferably about 1.3 to about 1.8. The pitch multiple of strands is preferably about 5 to about 8 and the pitch multiple of the wire rope is preferably about 8 to about 10. Both the core strand and the side strands preferably have shaped wires, having a flattened surface, at an outermost ply.
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