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1. (WO2017041090) WIND TURBINE BLADE REMOVAL AND INSTALLATION SYSTEM AND METHOD

Pub. No.:    WO/2017/041090    International Application No.:    PCT/US2016/050383
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Sep 07 01:59:59 CEST 2016
IPC: B66C 1/10
B66D 1/60
Applicants: BARNHART CRANE AND RIGGING CO.
Inventors: REYNOLDS, Kevin
BARNHART, Eric
PEPIN, III, Thomas, A.
DEPRIEST, William, Parker
Title: WIND TURBINE BLADE REMOVAL AND INSTALLATION SYSTEM AND METHOD
Abstract:
An apparatus for removing and installing a blade for a wind turbine is provided, comprising a first set of cable guides mounted within the nacelle, and a second set of cable guides positioned on an exterior surface of the rotor hub. An upper pulley block is suspended from a first hub flange and a second hub flange, wherein the upper pulley block is positioned above a third hub flange in a position for accepting the blade. A winch is positioned at a ground level, and the winch contains a lifting cable guided by the cable guides, and then reeved through the upper pulley block and a lower pulley block on a blade holding bracket, allowing the lower pulley block to be raised and lowered relative to the upper pulley block. The blade holding bracket attaches to the root end of the blade, and the lower pulley block is allowed to pivot and swivel relative to the blade holding bracket.