Patent ID: 9669497
Date: 2017-06-06
CPC Classifications: B21K,B23P,F03D,F05B,Y02E,Y02P,Y10T

Claim:
1. A method for assembling a blade of a wind turbine, the wind turbine comprising a tower having a tower surface and resting on a base, a nacelle mounted atop the tower, a hub rotatably attached to the nacelle, the hub comprising a hub connection flange adapted to be detachably connected to a blade connection flange of a rotor blade, the method comprising the next steps: fixing a first positioning element in the nacelle or in the top of the tower, fixing a second positioning element to the blade in a root blade area, lifting the blade to the vicinity of the hub connection flange by means of a lifting means, putting into contact the first and the second positioning elements; providing an accurate position of the blade connection flange, prior to the connection to the hub connection flange, by cooperation of the first and the second positioning elements; and providing, when the first and the second positioning elements cooperate by coming into direct contact with each other, a trajectory of the blade which is parallel to an axis of at least one hub connection hole, disposed in the hub connection flange, the provision of the trajectory being carried out by means of a guiding element joined to either the first positioning element, the second positioning element, or both.