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US 9,175,667 B2Granted
Fastening system for wind turbines and corresponding installation methods
AssigneeGamesa Innovation & Technology, S.L.
InventorsDaniel Artal Lorente, Fernando De Las Cuevas Jimenez, Fermin Lazcoz Santesteban, Pedro Munarriz Andres
Life of this patent
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Abstract
A fastening system used for the joint between a rotary shaft and a wind turbines pitch system which includes a front flange and a rear flange, which are joined together and supported on the hollow rotary shaft, and which are coupled to the pitch system having the bearings for the shaft and the star-shaped part. A fastening method couples the rear flange to the hollow shaft with a tapered collar and also to the front flange through spacer bushings.
Claims5
A fastening system comprising:
- a rotary shaft and a wind turbine pitch system of a three-blade variable pitch wind turbine, wherein said fastening system joins the rotary shaft and the wind turbine pitch system, said fastening system comprising
- a double flange formed by a front flange and a rear flange joined together, wherein
- the front flange is anchored to a pusher shaft of the pitch system which comprises a star-shaped part having arms that unite the blades of the wind turbine,
- a hollow rotary shaft goes through the rear flange, the hollow rotary shaft being frictionally engaged with the rear flange by a tapered collar on an inner part of the rear flange,
- both flanges, front and rear, are coupled together with at least three bushings
- wherein said at least three bushings are located between the arms of the star-shaped part and wherein the front and rear flanges sandwich the star-shaped part such that the front flange faces a front surface of the star-shaped part and the rear flange faces a rear surface of the star-shaped part.
3 more elements
Dependencies are inferred from the claim text.