Wind turbine blade with means for hoisting at the blade root and method of hoisting a blade

摘要

A rotor assembly for a wind turbine comprises a hub (20), a blade (10) provided with a blade root portion (11) and a strengthener for the blade root portion. The strengthener comprises a supporting part (30; 40) that strengthens the blade root portion and the supporting part comprises a supporting portion (31; 41) to temporarily support the blade. The supporting portion is made in one piece with the supporting part. The rotor assembly also comprises a number of first fasteners (50) and second fasteners (51) to fasten the blade root portion to the hub. The second fasteners are adapted to fasten the supporting part of the strengthener to the blade root portion when the latter is not fastened to the hub.