Patent ID: 8250758
Filing Date: 2012-08-28
Classification: B66C,F03D,F05B,Y02E,Y02P,Y10T

Abstract:
1. A method for removing an article of wind turbine equipment from a nacelle of a wind turbine tower (WTT), the method comprising: installing a load-rated winch internal to the wind turbine tower, adapted to lowering and raising the article between a base of the WTT and the nacelle of the WTT such that lowering and raising occur internal to the WTT; installing an internal support crane within the nacelle, the crane adapted for lifting the article from the foundation and transferring the article to the load-rated winch; disassembling the article from the foundation; translating the article from the foundation to the load-rated winch; and lowering the article through the interior of the WTT to the base of the WTT with the load-rated winch.