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US08764304B2 Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator 有权
滚子轴承，用于支撑风力发电机主轴的滚子轴承保持架部分，风力发电机主轴支撑结构

  • Patent Title: Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator
  • Patent Title (中): 滚子轴承，用于支撑风力发电机主轴的滚子轴承保持架部分，风力发电机主轴支撑结构
  • Application No.: US12310798
    Application Date: 2007-09-04
  • Publication No.: US08764304B2
    Publication Date: 2014-07-01
  • Inventor: Tatsuya Omoto , Eiichi Nakamizo , Tomoya Sakaguchi
  • Applicant: Tatsuya Omoto , Eiichi Nakamizo , Tomoya Sakaguchi
  • Applicant Address: JP Osaka
  • Assignee: NTN Corporation
  • Current Assignee: NTN Corporation
  • Current Assignee Address: JP Osaka
  • Agency: Clark & Brody
  • Priority: JP2006-244396 20060908; JP2006-244397 20060908; JP2006-352462 20061227; JP2007-148352 20070604; JP2007-148353 20070604
  • International Application: PCT/JP2007/067199 WO 20070904
  • International Announcement: WO2008/029796 WO 20080313
  • Main IPC: F16C19/24
  • IPC: F16C19/24
Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator
Abstract:
A tapered roller bearing (31a) has a plurality of retainer segments (11a, 11d) each having a pocket to house a tapered roller (34a), and arranged so as to be continuously lined with each other in a circumferential direction between an outer ring (32a) and an inner ring (33a). The retainer segment (11a, 11d) is formed of a resin containing a filler material to lower a thermal linear expansion coefficient. In addition, a clearance (39a) is provided between the first retainer segment (11a) and the last retainer segment (11d) after the plurality of retainer segments (11a, 11d) have been arranged in the circumferential direction without providing any clearance. Here a circumferential range (R) of the clearance (39a) is larger than 0.075% of a circumference of a circle passing through a center of the retainer segment (11a, 11d) and smaller than 0.12% thereof at room temperature.
Abstract(Chinese):

圆锥滚子轴承（31a）具有多个保持器部分（11a，11d），每个保持器部分具有容纳圆锥滚子（34a）的口袋，并且被布置成在圆周方向上在外圈 （32a）和内圈（33a）。 保持器部分（11a，11d）由含有填料的树脂形成，以降低热线膨胀系数。 此外，在多个保持器节段（11a，11d）沿圆周方向布置而不提供任何间隙之后，在第一保持器部分（11a）和最后的保持器部分（11d）之间设置间隙（39a）。 这里，间隙（39a）的周向范围（R）大于通过保持器节段（11a，11d）的中心的圆周的0.075％，在室温下小于其0.12％。

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