| 摘要 |
<p>The present invention relates to a hybrid main shaft(100) for wind power generation with improved strength while lightening the weight by connecting carbon fiber after digging inside of the existing main shaft comprised as forged products. The hybrid main shaft is required for delivering, to the power generator, the rotary power of a rotor hub connected with a blade. One side of a common main shaft is connected to the rotor hub, the other side is connected to a gear box, and a main hole (110) is formed inside of the common main shaft. The hybrid main shaft comprises: a first main body (13) having a first expansion main hole (11) made by cutting the inner periphery of the common main shaft's main hole; and a first steel pipe (17) which has a first carbon hole (17a) having the same diameter as the diameter of the main hole, and which is made of carbon fiber material attached on the inner periphery of the first expansion main hole.</p> |
