公开(公告)号：US20170342958A1

公开(公告)日：2017-11-30

申请号：US15536180

申请日：2015-12-15

Applicant: Alstom Renewable Technologies Wind B.V.

Inventor： Ferran ROURA ,  Jose Luis ROMAN MALLADA ,  Nicolas VELAZQUEZ

IPC: F03D1/06 ,  F03D80/70 ,  F03D7/02 ,  F16B35/04 ,  F16B31/06

CPC classification number: F03D1/0658 ,  F03D1/0675 ,  F03D7/0204 ,  F03D7/0224 ,  F03D80/70 ,  F05B2260/301 ,  F16B31/06 ,  F16B35/041 ,  Y02E10/721

Abstract: A bolted attachment having opposite threaded sections between which a shank is provided having at least two shank sections with different diameter located at a length from the threaded section of at least three times the difference between a diameter of a threaded section and a minimum diameter of the shank. At least one conical transition is formed between two adjacent shank sections where the ratio of its length to a difference between a diameter at one end of the transition and a diameter at the opposite end of the transition is of at least 0.85.