CRANE FOR HANDLING OF WIND TURBINE GENERATOR COMPONENTS AND METHOD OF HOISTING OF SUCH A CRANE

摘要

A crane capable of handling of major components during installation or servicing of wind turbines, comprises a main body (4) on which is mounted a crane arm (6), and a lifting point (20) at or near an upper end of the main body (4) to which a hoisting cable assembly (30) 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 (4) 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.