Patent ID: 8181748

Claim:
Lifting device for the assembly of a wind turbine formed by a nacelle ( 1 ) and a tower ( 2 ) comprised of at least a lower part ( 22 ) and an upper part ( 21 ), where the lower part ( 22 ) is divided into at least two sections ( 221 ) and is assembled with the upper part ( 21 ) by means of an upper flange ( 222 ) which is screwed to a lower flange ( 211 ) of the upper part ( 21 ) of the tower ( 2 ), comprises: a lower platform ( 33 ) connected to an upper platform ( 31 ) by cylinders ( 34 ) situated between the platforms ( 31 , 33 ) which move said platforms ( 31 , 33 ) apart or closer together; including a support structure ( 32 ) upon the upper platform ( 31 ) to which the upper part ( 21 ) of the tower ( 2 ) is fixed, said support structure being equipped with guide rollers ( 321 ) to direct the advancing movement of the support structure; anchoring beams ( 225 ) located lengthwise along internal contours of the lower part ( 22 ) of the tower ( 2 ) along which the platforms ( 31 , 33 ) of the lifting device ( 3 ) move and are fixed and upon which the guide rollers ( 321 ) of the support structure ( 32 ) run; and upper guide rollers ( 224 ) located on the upper flange ( 222 ) of the lower part ( 22 ) to direct the lifting of the upper part ( 21 ) of the tower ( 2 ).