Patent ID: 11933268
Assignee: NORDEX ENERGY SPAIN, S.A.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 17:
18. A method for relocating the yaw bearing of a wind turbine comprising a tower, a nacelle comprising a nacelle frame, and a yaw bearing comprising at least a geared ring for providing a rotatable connection between the nacelle and the tower around a yaw axis and at least one gear motor of a yaw drive for providing the rotatable connection between the nacelle and the tower around the yaw axis, wherein the yaw bearing comprises:
the at least geared ring which in turn comprises a first ring connected to a geared crown, and
a second ring;
wherein one of the rings is connected to a nacelle frame whilst the other ring is connected to the tower;
the method comprising:
a) disengaging the rotatable connection between the nacelle and the tower while maintaining the operation of the geared ring,
b) lifting the nacelle from the tower using lifting means, allowing the rotation of the geared ring with respect to a component to which the geared ring is connectable while maintaining and powering in contact the geared ring and the at least one gear motor throughout the lifting, wherein the component to which the geared ring is connectable is either the nacelle or the tower; and;
c) rotating the geared ring which comprises the first ring around the yaw axis, with respect to the component to which the geared ring is connectable until the geared ring reaches a predetermined position with respect to the component to which the geared ring is connectable.