Wind turbine rotor hub and teeter joint

Patent · Tue Oct 11 00:00:00 EDT 1994

OSTI ID:869540

Coleman, Clint ^[1]; Kurth, William T ^[1]; Jankowski, Joseph ^[2]

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1. Warren, VT
2. Stowe, VT

A rotor hub is provided for coupling a wind turbine rotor blade and a shaft. The hub has a yoke with a body which is connected to the shaft, and extension portions which are connected to teeter bearing blocks, each of which has an aperture. The blocks are connected to a saddle which envelops the rotor blade by one or two shafts which pass through the apertures in the bearing blocks. The saddle and blade are separated by a rubber interface which provides for distribution of stress over a larger portion of the blade. Two teeter control mechanisms, which may include hydraulic pistons and springs, are connected to the rotor blade and to the yoke at extension portions. These control mechanisms provide end-of-stroke damping, braking, and stiffness based on the teeter angle and speed of the blade.

• Assignee: Northern Power Systems, Inc. (Moretown, VT)
• Patent Number(s): US 5354175
• Application Number: 08/113,963
• OSTI ID: 869540
• Country of Publication: United States
• Language: English

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