A method of lowering a wind turbine blade after removal from a wind turbine lowers the blade in a vertical position to a point near the ground, and rotates it to a horizontal position for emplacement on a cradle. A winch is situated in the nacelle of the wind turbine. A cable extends downward from the winch to the blade root where it may be secured to a load cell. A tip end shoe is placed around the lower portion of the blade, and includes a crane hook receiving component that is used when the blade orientation is being changed. Tag lines are attached to the root and the tip end shoe, and extend to points on the ground where technicians manipulate them to prevent the blade from being blown into the tower.


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    Title :

    Method for lowering and raising a wind turbine blade


    Contributors:

    Publication date :

    2016-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL / B66C Krane , CRANES / F03D Windkraftmaschinen , WIND MOTORS



    Wind Turbine Blade Lowering Apparatus

    SMITH NEIL / KISSINGE JOSH / KILS OLE | European Patent Office | 2016

    Free access

    Wind turbine blade lowering apparatus

    SMITH NEIL / KISSINGER JOSH / KILS OLE | European Patent Office | 2016

    Free access