Platform for wind turbine

1. An aerial platform for a wind turbine with a tower and rotor blades arranged on the tower, which aerial platform comprises:

a vehicle comprising a trailer bed;

at least a first pair of cables and a second pair of cables, which are each attached with one end to the vehicle and can be attached with the other end close to the upper side of the tower of the wind turbine;

a lift cradle which is guided by the at least first pair of cables;

wherein the lift cradle is adapted to be hoisted with the second pair of cables along the first pair of cables;

wherein vertically extending, elongate, and nesting telescopic cable guides are arranged only on opposing sides of the lift cradle adjacent to a side directed toward the tower;

wherein the cable guides are telescopic such that a bottom part of the cable guides slide into an upper part of the cable guides when the lift cradle is placed on the trailer bed;

wherein the at least first pair of cables and the at least second pair of cables extend through the cable guides; and

wherein the lift cradle comprises a horizontal work platform with a central opening for passage of a rotor blade.

2. The aerial platform as claimed in claim 1 , wherein the vehicle is a towed trailer.

3. The aerial platform as claimed in clam 1 , wherein the work platform comprises at least four platform segments which are pivotally connected to each other in a substantially diamond shape using hinges.

4. The aerial platform as claimed in claim 3 , wherein the at least four platform segments comprise two short platform segments connected pivotally to each other and two long platform segments connected pivotally to each other.

5. The aerial platform as claimed in claim 1 , the nesting telescopic cable guides comprise a tube.

6. The aerial platform as claimed in claim 1 , wherein the lift cradle comprises an extendable spacer for holding the lift cradle at a distance from the tower.

7. A lift cradle for an aerial platform, wherein the lift cradle comprises a horizontal work platform with a central opening for passage of a rotor blade, wherein the work platform comprises at least four platform segments which are pivotally connected to each other in a substantially diamond shape using hinges, wherein the at least four platform segments comprise two short platform segments pivotally connected to each other and two long platform segments pivotally connected to each other;

wherein the lift cradle is adapted to be hoisted along at least a first pair of cables with a second pair of cables;

wherein vertically extending, elongate, and nesting telescopic cable guides are arranged only on opposing sides of the lift cradle adjacent to a side directed toward a tower supporting the rotor blade;

wherein the cable guides are telescopic such that a bottom part of the cable guides slide into an upper part of the cable guides when the lift cradle is placed on a trailer bed adapted to haul the lift cradle; and

wherein the at least first pair of cables and the at least second pair of cables extend through the guides.

8. The lift cradle for an aerial platform as claimed in clam 7 , wherein the trailed bed is part of a towed trailer.

9. The lift cradle for an aerial platform as claimed in claim 7 , the nesting telescopic cable guides comprise a tube.

10. The lift cradle for an aerial platform as claimed in claim 7 , wherein the lift cradle comprises an extendable spacer for holding the lift cradle at a distance from the tower.