| 摘要 |
A lifting device (3) is placed at the upper end of a tower (1) so as to be horizontally rotatable, and the lifting device (3) lifts and lowers a wind-driven power generation unit (4). This increases safety of the wind-driven power generation unit (4) in strong wind and facilitates maintenance. Also, a rotating member (6) having a fish shape cross-section and rotating horizontally by wind is attached to the tower (1), and this reduces overturning moment on the tower (1). |
