Crane for handling of wind turbine generator components and method of hoisting of such a crane

摘要

A crane capable of handling major components during installation or servicing of wind turbines includes a main body on which is mounted a crane arm, and a lifting point at or near an upper end of the main body to which a hoisting cable assembly is joined or around which a lifting cable is passed and which carries a major part of the crane weight as it is hoisted up a tower of the wind turbine, wherein the lifting point is laterally adjustable relative to the main body in a direction which is generally towards or away from the tower when in its lifting orientation in order to allow control of the crane balance.