Invention Grant
- Patent Title: Method and system for lifting a wind turbine rotor
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Application No.: US16473374Application Date: 2017-12-13
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Publication No.: US11235956B2Publication Date: 2022-02-01
- Inventor: Henrik Petersen , Jesper Hermann Hansen , Jens Torborg
- Applicant: Vestas Wind Systems A/S
- Applicant Address: DK Aarhus N.
- Assignee: Vestas Wind Systems A/S
- Current Assignee: Vestas Wind Systems A/S
- Current Assignee Address: DK Aarhus N.
- Agency: Wood Herron & Evans LLP
- Priority: DKPA201671054 20161228
- International Application: PCT/DK2017/050427 WO 20171213
- International Announcement: WO2018/121822 WO 20180705
- Main IPC: B66C1/10
- IPC: B66C1/10 ; B66C1/12 ; F03D13/10

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.
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