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US 10,781,081 B2Granted
Tower crane for erecting a wind turbine, and method for erecting said tower crane
AssigneeWobben Properties GmbH
InventorsRoy Kersten, Frank Knoop, Ludger Janssen, Tim Janssen, Rolf Coners
Life of this patent
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Abstract
A rotating tower crane for erecting a wind turbine, having a tower and a tower substructure, which is connected to the tower and is intended for supporting the tower, wherein the tower substructure has a supporting cross frame, which has three or more, preferably four, legs, extending from the tower. It is proposed that each leg has fastened on it, on the ground side, a load-distributor plate, which is not connected to the foundation, wherein the load-distributor plates together form the ballast of the tower.
Claims20
A rotating tower crane for erecting a wind turbine on a foundation, the rotating tower crane comprising:
- a tower;
- and
- a tower substructure coupled to the tower and configured to support the tower, the tower substructure having a supporting cross frame that includes at least three legs, the at least three legs having first ends and second ends, the first ends being coupled to the tower, the second opposing ends coupled to load-distributor plates, the load-distributor plates being on the foundation or a ground surface without being fixed to the foundation and together forming a ballast of the tower,
- wherein the at least three legs extend at an angle inclined relative to a plane of the foundation.
1 more element
A rotating tower crane for erecting a wind turbine on a foundation, the rotating tower crane comprising:
- a tower;
- a tower substructure coupled to the tower and configured to support the tower, the tower substructure having a supporting cross frame that includes at least three legs extending from the tower, the at least three legs having ends and load-distributor plates coupled to the ends, the load-distributor plates being on the foundation or a ground surface without being fixed to the foundation and together forming a ballast of the tower;
- and
- at least one strut configured to fasten the rotating tower crane to the tower of a wind turbine to be erected at at least one first height, wherein the at least one strut has one or more pneumatically or hydraulically actuated telescopic retaining arms configured to be moved between a retracted position and an extended position and in the extended position configured to be connected to the tower in a reversibly releasable manner by a coupling.
1 more element
A method comprising:
- erecting a rotating tower crane for erecting a wind turbine, wherein the erecting the rotating tower crane comprises:
- forming a foundation for the wind turbine;
- positioning two first load-distributor plates on the foundation without fixing the two first load-distributor plates to the foundation;
- positioning one or more second load-distributor plates alongside the foundation on a ground surface without fixing the one or more second load-distributor plates to the ground surface;
- connecting the two first load-distributor plates and the one or more second load-distributor plates to a lower portion of the tower crane by a supporting cross frame having three or more legs, wherein the three or more legs have first ends coupled to the lower portion of the tower crane and second ends coupled to a respective one of the two first load-distributer plates on the foundation and the one or more load-distributor plates alongside the foundation, wherein the at least three legs extend at an angle inclined relative to a plane of the foundation;
- and
- erecting the tower crane, wherein the two first load-distributor plates and the one or more second load-distributor plates form a ballast of the tower crane.
4 more elements
A method comprising:
- positioning two first load-distributor plates above a foundation for a wind turbine, wherein the first load-distributor plates are not fixed to the foundation;
- positioning two second load-distributor plates alongside the foundation on a ground surface, wherein the second load-distributor plates are not fixed to the ground surface;
- connecting the first and second load-distributor plates to a lower portion of a tower by a supporting cross frame having three or more legs, wherein the three or more legs have first ends coupled to the lower portion of the tower crane and second ends coupled to a respective one of the two first load-distributer plates on the foundation and the one or more load-distributor plates alongside the foundation, wherein the at least three legs extend at an angle inclined relative to a plane of the foundation;
- erecting a remaining portion the tower;
- and
- levelling the tower by a levelling device.
3 more elements
Dependencies are inferred from the claim text.