Vestas Wind Systems A/s

Christine Broe

Jakob Anders Sørensen

Rasmus Sanderhoff Johansen

A method for erecting a wind turbine tower is disclosed. A tower section () comprising a lower flange () and an upper flange (), and a plurality of stud bolts () and nuts () are provided. The tower section () is oriented in an upright position with the lower flange () below the upper flange (), and stud bolts () are positioned in bolt holes () in the lower flange () with nuts () arranged on an upper side of the lower flange (). The tower section () is lifted to a mounting position on top of another tower section (), and a flange combination is formed by aligning the bolt holes () formed in the lower flange () of the tower section () with bolt holes () formed in an upper flange () of the other tower section (), while advancing the stud bolts () through the bolt holes (). The invention further provides a socket tool () for screwing nuts () onto stud bolts () in a manner which positions the stud bolts () correctly with respect to a flange ().

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Aarhus C, Denmark

Christine Broe