| 摘要 |
A wind turbine includes a hub comprising at least three spaced projections and a hub cap; at least three blades each comprising a root plate at one end, the root plate including a sleeve having a hole on a windward side; at least three shaft members each interconnecting the root plate and a corresponding projection; at least three sets of four abutment plates each secured to either side of the root plate or either side of the projection; U-shaped steel torsion bars each having both ends at an inclined angle of about 15 to 25 degrees fastened in the abutment plate and disposing the root plate at an angle of about 4 to 10 degrees with respect to the corresponding projection; a spring put on the rotation shaft on a leeward side of the hub; and pins each installed in a hub cap and sticking into the hole.
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