Patent ID: 8113362

Claim:
A method for lifting of components of a wind energy installation ( 10 ) to an installation height, comprising the steps of: guiding a hoisting means ( 26 ) of a first hoisting device ( 20 ) starting from a hoisting means drive ( 24 ), which is arranged close to the ground, along a deflection means ( 30 ), which is arranged within a pod in the area of a tower head of the wind energy installation ( 10 ) and which is associated with the first hoisting device ( 20 ), to a component ( 18 ) which is arranged on the ground or close to the ground, and the hoisting means ( 26 ) of the first hoisting device ( 20 ) is attached to the component ( 18 ) in the area of or close to the center of gravity of the component ( 18 ); guiding a hoisting means ( 36 , 48 ) of a second hoisting device ( 22 ) starting from a hoisting means drive of the second hoisting device ( 22 ) along a free end ( 34 , 46 ), which is arranged above the deflection means ( 30 ) associated with the first hoisting device ( 20 ), of a crane jib ( 32 , 44 ) downwards to the component ( 18 ), and the hoisting means ( 36 , 48 ) of the second hoisting device ( 22 ) is attached to the component ( 18 ) further outwards relative to the center of gravity of the component ( 18 ) than is the hoisting means ( 26 ) of the first hoisting device ( 20 ), the hoisting means ( 36 , 48 ) of the second hoisting device ( 22 ) being attached to the component ( 18 ) in an upper area of the component ( 18 ) when the component ( 18 ) is in the installed state; and then lifting the component ( 18 ) to the required installation height with the aid of the hoisting means ( 26 , 36 , 48 ) of the hoisting devices ( 20 , 22 ).