BLADE STRUCTURE OF VERTICAL AXIS WIND TURBINE

To provide a blade structure of a vertical axis wind turbine which inhibits hanging of blades so as to deal with the increase of the size of the wind turbine itself, enables adjustment of inclination of the blades, and attains high strength and high stability to deal with the increase of the size of the wind turbine itself.SOLUTION: A vertical axis wind turbine includes: a rotary shaft 2 which rotates around an axis arranged perpendicular to a direction that wind is received; and a plurality of blades 10 which are connected to the rotary shaft and rotate around a vertical axis. Each blade includes an upper oblique blade 11A and a lower oblique blade 11B extending from the rotary shaft to upper and lower oblique directions; and a main blade 10 disposed between outer ends of the upper oblique blade and the lower oblique blade. Each upper oblique blade includes a reinforcement wire 7 in which one end hooks on an intermediate part of the upper oblique blade and the other end is stretched to a rotary shaft side end of the adjacent upper oblique blade. Stretching of the reinforcement wire is formed so as to be adjustable in a longitudinal direction of the reinforcement wire.SELECTED DRAWING: Figure 1 【課題】風車自体の大型化に対応すべく翼の垂れを抑制すると共に、翼の傾き調整を可能にして、風車自体の大型化に対応した高強度と高い安定性が得られる垂直軸風車の翼構造を提供する。【解決手段】風を受ける方向に対して垂直な軸周りに回転する回転軸２と、上記回転軸に連結されて垂直軸周りに回転する複数の翼１０とを具備する垂直軸風車において、上記各翼は、上記回転軸から上下斜め方向に延びる上部斜翼１１Ａ及び下部斜翼１１Ｂと、上記上部斜翼及び上記下部斜翼の外端間に配置される主翼１０とを具備する。上記各上部斜翼は、それぞれ該上部斜翼の中間部に一端が掛着され、他端が隣接する上記上部斜翼の上記回転軸側端部に張着される補強ワイヤー７を具備し、上記補強線材の張着を、上記補強線材の長手方向に調整可能に形成する。【選択図】 図１