| 摘要 |
A pillow block assembly (500) to mount a windturbine comprises a pillow block housing (524) having a housing body defining a generally cylindrical bore, an upwind end plate (528a) and a downwind end plate (528b), the end plates being removably mounted to the housing body. An anti-friction assembly is received in the housing body and defines a generally spherical bore which receives a spherical bearing assembly. A seal carrier is positioned adjacent the bearing assembly inner race. The pillow block assembly includes at least one labyrinth seal having an inner end in communication with the lubrication chamber of the bearing and/or the socket interface between the bearing assembly and the liner and an outer end at an outer surface of the seal carrier. The seal carrier carries a flexible seal which seals the outer end of the labyrinth seal. In accordance with one aspect of the invention, the housing allows for removal of at least the upwind endplates to allow for access to the liner assembly to enable servicing/ replacement of the liner assembly without removal of the bearing assembly. In another aspect of the invention, the labyrinth seal (s) is (are) tight fitting seal (s), and the pillow block assembly is provided with a grease bypass passage. |
