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1. (WO2018121822) METHOD AND SYSTEM FOR LIFTING A WIND TURBINE ROTOR

Pub. No.:    WO/2018/121822    International Application No.:    PCT/DK2017/050427
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 14 00:59:59 CET 2017
IPC: F03D 13/10
F03D 80/00
B66C 1/10
B66C 1/12
Applicants: VESTAS WIND SYSTEMS A/S
Inventors: PETERSEN, Henrik
HANSEN, Jesper Hermann
TORBORG, Jens
Title: METHOD AND SYSTEM FOR LIFTING A WIND TURBINE ROTOR
Abstract:
A method of lifting a rotor of a wind turbine, the rotor having a center of gravity and including a hub and first, second, and third blades projecting outwardly from the hub at locations circumferentially distributed thereabout, includes positioning first and second slings around the first and second blades, respectively, to define first and second lifting zones delineating a lifting envelope, wherein the lifting envelope encompasses the center of gravity. The method also includes lifting the rotor above a surface via the first and second slings wherein the rotor is in one of a substantially horizontal or substantially vertical orientation, with the aid of at least one of the first and second slings while continuing to fully support the rotor by the first and second slings.