Lifting device for the assembly of a wind turbine

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).