Wind turbine rotor hub and teeter joint
Abstract
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.
- Inventors:
-
- Warren, VT
- Stowe, VT
- Issue Date:
- OSTI Identifier:
- 869540
- Patent Number(s):
- 5354175
- Application Number:
- 08/113,963
- Assignee:
- Northern Power Systems, Inc. (Moretown, VT)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
- DOE Contract Number:
- ZG-0-19090-2
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- wind; turbine; rotor; hub; teeter; joint; provided; coupling; blade; shaft; yoke; connected; extension; portions; bearing; blocks; aperture; saddle; envelops; shafts; pass; apertures; separated; rubber; interface; provides; distribution; stress; larger; portion; control; mechanisms; hydraulic; pistons; springs; provide; end-of-stroke; damping; braking; stiffness; based; angle; speed; rotor blade; turbine rotor; wind turbine; control mechanism; rotor hub; control mechanisms; bearing blocks; /416/
Citation Formats
Coleman, Clint, Kurth, William T, and Jankowski, Joseph. Wind turbine rotor hub and teeter joint. United States: N. p., 1994.
Web.
Coleman, Clint, Kurth, William T, & Jankowski, Joseph. Wind turbine rotor hub and teeter joint. United States.
Coleman, Clint, Kurth, William T, and Jankowski, Joseph. Tue .
"Wind turbine rotor hub and teeter joint". United States. https://www.osti.gov/servlets/purl/869540.
@article{osti_869540,
title = {Wind turbine rotor hub and teeter joint},
author = {Coleman, Clint and Kurth, William T and Jankowski, Joseph},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {10}
}