Base for supporting a lift system in a nacelle of a wind turbine

A base for supporting a lift system in a nacelle of a wind turbine, the base comprising:

• a pillow block mount configured to be supported on a pillow block in the nacelle of the wind turbine, the pillow block mount mountable on the pillow block through studs connecting the pillow block mount to the pillow block;
• a longitudinal beam pivotally connected to the pillow block mount, the longitudinal beam having a longitudinal axis, a proximal end proximate the pillow block mount and a distal end remote from the pillow block mount, the longitudinal beam pivotable about a horizontally oriented axis transverse to the longitudinal axis of the longitudinal beam;
• a beam support connected to the longitudinal beam, the beam support configured to support the longitudinal beam on a main bearing of the wind turbine proximate the distal end of the longitudinal beam;
• and,
• a jack situated proximate the distal end of the longitudinal beam, the jack operable to engage the longitudinal beam and a bedplate of the nacelle to raise and lower the distal end of the longitudinal beam to pivot the longitudinal beam about the horizontally oriented axis.