US 11,852,119 B2
Method for connecting a blade to a hub and method for disconnecting a blade from a hub
Russell James Brice, Vejle Øst (DK); and Jesper Moeller, Brande (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S
Appl. No. 17/625,479
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Jul. 10, 2020, PCT No. PCT/EP2020/069573
§ 371(c)(1), (2) Date Jan. 7, 2022,
PCT Pub. No. WO2021/013584, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 19187812 (EP), filed on Jul. 23, 2019.
Prior Publication US 2022/0268252 A1, Aug. 25, 2022
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/0658 (2013.01) [F05B 2230/604 (2013.01); F05B 2230/70 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for connecting a blade to a hub of a wind turbine, the method comprising:
providing the hub mounted to a tower of the wind turbine;
providing the blade and a rope connected to the blade at a first end;
lifting the blade towards the hub;
guiding a second end of the rope into an interior of the hub;
pulling the rope at the second end and thereby pulling the blade towards the hub using the rope guided into the interior of the hub; and
connecting the blade to the hub;
wherein the blade is pulled towards the hub in a longitudinal direction of the blade,
wherein a movement of the blade perpendicular to the longitudinal direction of the blade is restricted by a first guiding element,
wherein the first guiding element is a guiding cage connected to the hub and protruding from the hub, and
wherein the guiding cage has a grid structure.