| 摘要 |
<p>Provided is a windmill having variable blades, comprising: a support fixture (10) with a rotating shaft (11) combined to be able to rotate; horizontal rotating plates (20) which rotate along with the rotating shaft (11), are radially placed around the rotating shaft (11), face each other, and are extended in the direction of radius; a number of variable blades (30) installed to be folded or unfolded at the top side of each of the horizontal rotating plate (20), placed radially around the rotating shaft (11), and facing other around the rotating shaft (11); a linking means (40) that connects the variable blades (30) placed to face each other and links them with each other for the other variable blade (30) to be unfolded when one variable blade (30) is folded; a link release means (50) placed at the horizontal rotating plate (20) that releases the connection of a certain part of the linking means (40) and releases the link of a pair of variable blades (30) placed to face each other; a stopper (6) placed on a side of a stopper rotating shaft (61) installed in the lengthwise direction of the variable blade (30) that blocks rolling of the variable blade (30) by a certain angle or greater; and an operating means (70) that rotates the stopper (60) around the stopper rotating shaft (61).</p> |
