Patent ID: 9033109
Filing Date: 2015-05-19
Classification: F03D,F16H,Y02E

Abstract:
1. A system for lubricating gears in a wind turbine blade pitch drive, wherein said pitch drive comprises a drive pinion gear with gear teeth that engage a pitch bearing gear coupled to a respective wind turbine blade, said system comprising: a grease distributor configured to mount onto and rotate coaxial with said pinion gear; and said distributor comprising at least one channel member having a length and height profile so as to extend longitudinally along a gear tooth valley defined between adjacent teeth of said pinion gear without contacting inter-engaging teeth of said bearing gear and configured to deliver grease from an external grease supply to the gear tooth valley defined between adjacent teeth of said pinion gear in a contact area of said pinion gear with said bearing gear without said channel member contacting inter-engaging teeth of said bearing gear.