SYSTEM AND METHOD FOR REPLACING A PITCH BEARING

摘要

The present disclosure is directed to systems and methods for removing or installing a pitch bearing 150 of a wind turbine 10. The method includes installing a first pulley block 112 at an up-tower location of the wind turbine 10 and configuring a second pulley block 118 with the pitch bearing 150. A pulley cable 16 is routed from a ground location over the first pulley block 112 to the second pulley block 118 such that the second pulley block 118 is configured to slide along the pulley cable 16. The method also includes rotating the pitch bearing 150 to a tilted position. Thus, the method further includes lowering or lifting the pitch bearing 150 in the tilted position so as to prevent the pitch bearing 150 from colliding with the tower 12.