Method for moving a wind turbine component, such as a wind turbine hub, from a transportation position to a wind turbine assembly position in or on the nacelle, the main shaft or turbine hub, a handling unit, a wind turbine hub and use hereof

1. A method for moving a wind turbine component from a transportation position to a wind turbine assembly position using at least in part a crane system and a handling unit including an actuator, the wind turbine component having an external surface with an opening and an existing internal structural part contained inside the external surface, the method comprising:

attaching the handling unit to the internal structural part of the wind turbine component so that the handling unit extends through the opening in the wind turbine component, the handling unit being separable from the crane system,

operatively connecting the handling unit to a wire of the crane system,

subsequently lifting the handling unit and thereby the wind turbine component with the crane system, the handling unit and the wind turbine component being suspended from the wire, and

rotating the wind turbine component by operating the actuator of the handling unit while the wind turbine component is suspended.

2. The method according to claim 1 , wherein the wind turbine assembly position is a wind turbine assembly position in or on a nacelle, a main shaft or a hub.

3. The method according to claim 1 , wherein the handling unit is attached to at least two connection points of the structural part of the wind turbine component.

4. The method according to claim 1 , wherein the handling unit actuates a rotating movement around a unit rotational centre and the crane system establishes linear movement.

5. The method according to claim 1 , wherein the wind turbine component is lifted and rotated to an assembly position and subsequently assembled directly to a nacelle positioned on a wind turbine tower.

6. The method according to claim 1 , wherein the rotating of the wind turbine component is a one-way rotation of the wind turbine component controlled by the actuator.

7. The method according to claim 1 , wherein the wind turbine component is rotated by a defined angle of 70 to 100 degrees.

8. The method according to claim 1 , wherein at least the rotation movement of the handling unit is controlled by one or more remote control units.

9. The method according to claim 1 , further comprising:

transporting the wind turbine component to a wind turbine site on a transport vehicle before attaching the handling unit to the structural part of the wind turbine component, where the wind turbine component is lifted directly from the transport vehicle.

10. The method according to claim 1 , further comprising:

transporting the wind turbine component to a wind turbine site on a transport vehicle after attaching the handling unit to the structural part of the wind turbine component but before operatively connecting the handling unit to a wire of a crane system, where the wind turbine component is lifted directly from the transport vehicle.

11. The method according to claim 1 , wherein the component is a wind turbine hub, which is lifted and rotated with the crane system and the handling unit from the transportation position having an assembly surface facing downward to the wind turbine assembly position with the assembly surface facing a front of a nacelle.

12. The method according to claim 1 , wherein the component is a wind turbine hub, the internal structural part is a hub part of a blade bearing and the opening is a blade opening in the hub.

13. The method according to claim 1 , wherein the handling unit is operatively connected to a single wire of the crane system, and the handling unit and the wind turbine component are suspended by only the single wire of the crane system during lifting of the handling unit and the wind turbine component.

14. The method according to claim 1 , wherein the wind turbine component is rotated by the actuator of the handling unit simultaneous to the lifting of the handling unit and the wind turbine component by the crane system.

15. The method of claim 1 , wherein the handling unit includes a fixed arm for rigid attachment to the structural part of the wind turbine component, a lever arm pivotally coupled to the fixed arm and for connection to the wire of the crane system, and the actuator which includes a hydraulic linear actuator coupled to the fixed arm and the lever arm, and rotating the wind turbine component further comprises:

activating the hydraulic linear actuator to increase or decrease in length between the lever arm and the fixed arm such that the fixed arm and the wind turbine component rotate with respect to the lever arm and the wire of the crane system.

16. The method of claim 15 , wherein the lever arm includes a first end and a second end, and the lever arm is directly coupled to the crane system, the fixed arm, and the actuator by a connection consisting of three connection points: a pivotal connection point at the first end to the fixed arm, a pivotal connection point at the second end to the actuator, and a connection point at the second end to the crane system.

17. The method of claim 15 , wherein the fixed arm of the handling unit includes first and second attachment points, and attaching the handling unit to the structural part of the wind turbine component further comprises:

rigidly and fixedly attaching the first attachment point of the fixed arm to the structural part with a fastener; and

rigidly and fixedly attaching the second attachment point of the fixed arm to the structural part with a fastener.

18. The method of claim 17 , wherein rigidly and fixedly attaching the first and second attachment points of the fixed arm to the structural part further includes bolting the fixed arm to the structural part with bolt fasteners at the respective first and second attachment points.

19. The method of claim 17 ,

wherein the lever arm includes a first end and a second end, and the lever arm is directly coupled to the crane system, the fixed arm, and the actuator by a connection consisting of three connection points: a pivotal connection point at the first end to the fixed arm, a pivotal connection point at the second end to the actuator, and a connection point at the second end to the crane system, and

wherein the fixed arm includes first and second opposed ends and a central portion located between the first and second ends, the first end including the first attachment point, the second end including the second attachment point and a connection to the actuator, and the central portion defining a rotational center of the handling unit at the connection point with the first end of the lever arm.

20. A method for moving a wind turbine component from a transportation position to a wind turbine assembly position using at least in part a crane system and a handling unit including an actuator, the method comprising:

attaching the handling unit to a structural part of the wind turbine component, the handling unit being separable from the crane system and including a fixed arm with first and second attachment points for rigid and fixed attachment to the structural part of the wind turbine component, a lever arm pivotally coupled to the fixed arm and for connection to the wire of the crane system, and the actuator which includes a hydraulic linear actuator coupled to the fixed arm and the lever arm, operatively connecting the handling unit to a wire of the crane system, subsequently lifting the handling unit and thereby the wind turbine component with the crane system, the handling unit and the wind turbine component being suspended from the wire, and

rotating the wind turbine component by activating the hydraulic linear actuator to increase or decrease in length between the lever arm and the fixed arm such that the fixed arm and the wind turbine component rotate with respect to the lever arm and the wire of the crane system while the wind turbine component is suspended, wherein the lever arm includes a first end and a second end, and the lever arm is directly coupled to the crane system, the fixed arm, and the actuator by a connection consisting of three connection points: a pivotal connection point at the first end to the fixed arm, a pivotal connection point at the second end to the actuator, and a connection point at the second end to the crane system, and

wherein the fixed arm includes first and second opposed ends and a central portion located between the first and second ends, the first end including the first attachment point, the second end including the second attachment point and a connection to the actuator, and the central portion defining a rotational center of the handling unit at the connection point with the first end of the lever arm.

21. A method for moving a wind turbine component from a transportation position to a wind turbine assembly position using at least in part a crane system and a handling unit, the method comprising:

attaching the handling unit to a structural part of the wind turbine component, the handling unit being separable from the crane system, the handling unit including a lever arm, an actuator, and a fixed arm with first and second attachment points for rigid and fixed attachment to the structural part of the wind turbine component,

operatively connecting the handling unit to a wire of the crane system,

subsequently lifting the handling unit and thereby the wind turbine component with the crane system, the handling unit and the wind turbine component being suspended from the wire, and

rotating the wind turbine component operating the actuator of the handling unit while the wind turbine component is suspended,

wherein the fixed arm includes first and second opposed ends and a central portion located between the first and second ends, the first end including the first attachment point, the second end including the second attachment point and a connection to the actuator, and the central portion including a connection to the lever arm to define a rotational center of the handling unit.