Patent ID: 8206111

Claim:
Wind turbine comprising a rotor, a nacelle frame ( 13 ) housing with electrical generation means coupled to the rotor hub ( 11 ), braking means and control means of the drive train rotational position, the nacelle frame ( 13 ) and the rotor hub ( 11 ) having an arrangement for preventing the rotor hub ( 11 ) rotation when certain maintenance or assembly activities should be carried out, said arrangement including at least one sliding pin ( 21 ) in the nacelle ( 13 ) and first actuating means ( 31 ) for pushing/pulling it axially into/from at least one corresponding hole ( 23 ) in the rotor hub ( 11 ), characterized in that said arrangement also comprises means for allowing vertical and lateral adjustment displacements of said sliding pin ( 21 ) so that it can remain concentrically aligned with said hole ( 23 ) when it is inserted into it.