A method for mounting a wind turbine rotor blade to a hub

Abstract

The invention provides a method for mounting a wind turbine rotor blade (11) to a hub (18),—the blade comprising a blade root (111) comprising a root shell (115) forming a tubular shape of the blade root, the blade root forming an open blade root end (112) defining an imaginary root end plane (REP) at which the root shell terminates,—wherein for mounting the blade (11) to the hub (18), one of the blade root and the hub comprises a plurality of protruding engagement devices (119), and the other of the blade root and the hub forms a plurality of engagement apertures (181) each arranged to receive a respective of the engagement devices (119),—wherein the method comprises placing in the blade root (111), before the blade is mounted to the hub, a jacking device (401) so as to extend between two opposite locations of the blade root shell (115),—extending the jacking device (401) to subject the blade root (111) to a jacking force acting on said two locations (401L) of the root shell (115), so as to alter the shape of the blade root as seen in a direction which is perpendicular to the root end plane (REP), and—subsequently to said step of extending the jacking device (401), and while the jacking device is extended to subject the blade root (111) to the jacking force, moving the blade (11) and/or hub (18) to allow the engagement devices (119) to at least partly enter the respective engagement apertures (181).

Dependencies are inferred from the claim text.