Patent ID: 9057360
Filing Date: 2015-06-16
Classification: F03D,F05B,Y02E,Y02P

Abstract:
1. A wind power generator comprising: a tower having a top end portion and a bottom end portion, said bottom end portion being fixed to a base; a yaw bearing having an upper portion and a lower portion, said lower portion being fixed to the top end portion of the tower; a power generator main body being fixed to the upper portion of the yaw bearing such that the power generator is supported by the tower via the yaw bearing so as to freely rotate in a yaw direction, the power generator main body having a rotor rotatably supported by the power generator, and a power generator driven by a rotation of the rotor to generate electric power; a drive unit that rotates the power generator main body in the yaw direction with respect to the tower; and a jack device having a lower fixing section to be fixed to the top end portion of the tower, and an upper fixing section to be fixed to a bottom surface of the power generator main body, wherein the jack device is to be removably mounted between the power generator main body and the tower such that the jack device is located around the yaw bearing, and the jack device is for jacking up the power generator main body relative to the tower; wherein a first jack mounting section which the lower fixing section of the jack device is to be fixed to is provided on the top end portion of the tower, and the first jack mounting section is located radially outside of the yaw bearing, a second jack mounting section which the upper fixing section of the jack device is to be fixed to is provided on the bottom surface of the power generator main body, and the second jack mounting section is arranged so as to face the first jack mounting section in the vertical direction, the drive unit is mounted to at least one of the first jack mounting section and the second jack mounting section, and after the drive unit has been removed from the wind power generator, the jack device is mounted between the first jack mounting section provided on the top end portion of the tower and the second jack mounting section provided on the bottom surface of the power generator main body such that an opening is formed for removing the yaw bearing from an inside of the mounted jack device, or for inserting the yaw bearing inside the mounted jack device.