| 摘要 |
<p>PURPOSE:To control an output in accordance with the variation of wind speed by a method wherein a supporting member is inserted to the revolving shaft of a windmill, a pushing spring for the supporting member is installed around the outer periphery of the revolving shaft, a shaft for securing a blade is inserted to the outer peripheral part of the supporting member and a part of the blade is connected to the end of the revolving shaft of the windmill through a link. CONSTITUTION:A lead bearing 32, movable into the axial direction, is inserted into the revolving shaft 31 of the windmill and the blade 35 is attached through a sleeve 33 so as to be rotatable through a shaft 36. The lead bearing 32 is energized by the spring 38 upwardly toward a stopper 39. One end of the link 40 is secured to the stopper 39 while the other end of the link is secured to the blade 35. When the revolving number of the windmill is increased, a force to push down the blade 35 against the spring 38 is exerted and when the blade 35 is retreated by the downwardly pushing force stronger than a predetermined value, the pitch angle of the blade is changed by the link 40 and the revolving number of the blade may be restricted.</p> |
