Hub pitch gear repair method

• Main Authors: AUER, GUNTHER, DIMASCIO, PAUL STEPHEN, GRIMLEY, ROBERT, HAMEL, ALAN, CLOSE, RYAN
• Format: Patent
• Language: English; French; German
• Published: 24.06.2015
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; THERMAL INSULATION IN GENERAL; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

A method for repairing a hub pitch gear assembly (115). The method includes providing a ring assembly (137) for adjusting a pitch angle of a wind turbine blade (108) having a plurality of gear teeth (302). A segment of the ring assembly (115) is removed, the segment including at least a portion of at least one gear tooth (115), to form a repair cavity (303). A repair segment (301) configured to mate the repair cavity (303) is provided and the repair segment (301) is directed into the repair cavity (303) and fastened in position. A repaired pitch gear assembly (115) and wind turbine (100) are also disclosed.