To suppress the vibration of a rotating shaft in rotation while suppressing an increase in cost for manufacturing components.
In the rotating shaft structure 60, the rotating shaft 42 is configured of a weak-magnetic body, and a first bearing 20 and a second bearing 30 which rotatably support the rotating shaft 42 are provided with a permanent magnet 26 and a permanent magnet 36, respectively. Accordingly, the rotating shaft 42 is drawn toward the permanent magnet 26 and toward the permanent magnet 36, whereby the vibration of the rotating shaft 42 at rotation can be suppressed. Furthermore, since the rotating shaft 42 is configured of the weak-magnetic body and the configuration is simple, the first bearing 20 and the second bearing 30 are provided with the permanent magnet 26 and the permanent magnet 36, respectively, the cost for manufacturing the components can be prevented from being increased.
| WO/2020/118334 | NACELLE FOR A WIND TURBINE |
| WO/2015/064460 | HINGE DEVICE |
| JPS59185415 | [Title of the device] Bearing device |
| JP2006180642A | 2006-07-06 | |||
| JP2002333015A | 2002-11-22 | |||
| JPH07231603A | 1995-08-29 | |||
| JP2003092856A | 2003-03-28 | |||
| JP2008241034A | 2008-10-09 |
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda