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US 8,047,792 B2Granted
Wind turbine pitch bearing, and use hereof
AssigneeVestas Wind Systems A/S
InventorsAnton Bech, Gerry Madden
Life of this patent
Estimating the term…
Abstract
The invention relates to a wind turbine including at least two pitch controlled wind turbine blades. Each blade has pitch bearings including two or more bearing rings, and pitch controlling means for pitching the blades by means of the bearings. The blades are mounted on a hub via the pitch bearings and the pitch bearings include separate flexibility enhancing means for controlling loads in the bearings.
Claims13
A wind turbine comprising:
- a hub;
- at least two pitch controlled wind turbine blades;
- and one or more pitch bearings mounting said blades to said hub, each pitch bearing including an inner bearing ring and outer bearing ring;
- wherein said one or more pitch bearings each comprise an outer plate fixed to and extending radially outward from said outer bearing ring for controlling loads in said bearings, said outer plate being fixed to said outer bearing ring at a location spaced from said hub;
- and
- wherein said outer plate is a semicircular ring covering a portion of said outer bearing ring.
3 more elements
A wind turbine comprising:
- a hub;
- at least two pitch controlled wind turbine blades;
- and
- one or more pitch bearings mounting said blades to said hub, each pitch bearing including an inner bearing ring and outer bearing ring;
- wherein said one or more pitch bearings each comprise an outer plate fixed to and extending radially outward from said outer bearing ring and an inner plate fixed to said inner bearing ring for controlling loads in said bearings.
2 more elements
A wind turbine comprising:
- a hub;
- at least two pitch controlled wind turbine blades;
- and
- one or more pitch bearings mounting said blades to said hub, each pitch bearing including an inner bearing ring attached to said blade and an outer bearing ring attached to said hub, said outer bearing ring including one or more bolts extending therethrough and into the hub for attaching said outer bearing ring to said hub;
- wherein said one or more pitch bearings each comprise an outer plate fixed to said outer bearing ring and an inner plate fixed to said inner bearing ring for controlling loads in said bearings.
2 more elements
Dependencies are inferred from the claim text.