METHOD OF LIFTING NACELLE, NACELLE LIFTING MECHANISM, TOWER, AND WIND TURBINE GENERATOR

摘要

A method of lifting a nacelle mounted on a tower is provided. The method includes the steps of attaching the tapered bushing mechanism to the through-hole formed in the member of the tower, mounting the push-up bolt on the tapered bushing mechanism, and raising the push-up bolt while bringing the push-up bolt to the member formed on the nacelle. It is equipped with the process of making it. The taper bushing mechanism includes a taper bushing inner cylinder and a taper bushing outer cylinder. The tapered bushing inner cylinder has a first tapered portion whose outer diameter increases toward the end of the tapered bushing inner cylinder, and a first thread is formed on the inner surface thereof. The tapered bushing outer cylinder has a second tapered portion whose inner diameter decreases toward the end of the tapered bushing outer cylinder. In the step of attaching the tapered bushing mechanism to the through hole, the end of the tapered bushing inner cylinder is positioned above, the end of the tapered bushing outer cylinder is positioned below, and the outer circumferential surface of the first tapered portion and the inner surface of the second tapered portion are in contact with each other and the tapered bushing And inserting the taper bushing mechanism into the through hole so that the outer circumferential surface of the outer cylinder contacts the through hole, and pushing up the taper bushing outer cylinder upward while the taper bushing mechanism is inserted into the through hole. The step of raising the push-up bolt includes a step of rotating the push-up bolt in a state in which the push-up bolt is screwed onto the first thread.