Lagerwey Wind B.v.

Albertus Waaijenberg

Aart Van De Pol

Hendrik Lambertus Lagerweij

André Heinz Pubanz

A hoisting system for the at least one of an installation, a decommissioning and a maintenance of a wind turbine which comprises at least a foundation, a tower, a yawing part and a rotor of at least 80 m diameter with at least one blade, comprising a first hoisting device which comprises measures to establish a load carrying joint with an already built part of the wind turbine which is located above the foundation, wherein the hoisting system is characterized in that the ratio between the maximum hoist load of the hoisting device and the mass of the heaviest part is larger than 0.2 and smaller than 1 and in particular smaller than 0.8 and more in particular smaller than 0.7 and preferably smaller than 0.6, with the heaviest part being a heaviest part which is hoisted as one piece and which belongs to the yawing part of wind turbine.

Hoisting system for installing a wind turbine

A wind turbine includes a tower (), a nacelle () being connected to the tower (), and a rotor () having a rotor hub () and a number of rotor blades () extending radially outwards from the rotor hub (). The nacelle () includes a hollow shaft () and the rotor hub () includes a support member () which is connected to the hollow shaft () by two tapered roller bearings () so as to be rotatable about an axis of rotation (). The tapered roller bearings () each have a bearing width (w) which is defined in a direction parallel to the axis of rotation (). The tapered roller bearings () are arranged at a distance (d) from one another which is not greater than the bearing width (w) of the tapered roller bearings ().

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Barneveld, Netherlands

Albertus Waaijenberg