Bearing system for a wind turbine comprising a rotatable scraper and a stationary scraper

摘要

The present invention relates to a bearing system (100) for a wind turbine. The bearing system (100) comprises a stationary ring (110) which comprises a first axial front surface (111), a rotatable ring (120) to which a hub of the wind turbine is mountable, a rotatable scraper (130) which is fixed to the rotatable ring (120) and a stationary scraper (140). The stationary ring (110) supports the rotatable ring (120), such that the rotatable ring (120) is rotatable around the stationary ring (110). The rotatable scraper (130) abuts against the first axial front surface (111) such that by rotation of the rotatable ring (120) the rotatable scraper (130) sweeps along the first axial front surface (111) for scraping off a grease from the first axial front surface (111) of the stationary ring. The stationary scraper (140) and the rotatable scraper (130) are arranged with respect to each other in such a way that, if the rotatable ring (120) rotates, the rotatable scraper (130) passes the stationary scraper (140) once per revolution of the rotatable ring (120) with respect to the stationary ring (110) such that the stationary scraper (140) scrapes off the grease from the rotatable scraper (130).