| 摘要 |
The invention relates to sealing means for blade bearings or roller bearings of aero-generators, characterised in that it is an element that combines radial sealing, which is most known in the prior art, with axial sealing, which is novel and achieved using a characteristic shaft (12) in combination with axial lips. Said sealing means is used in the space (4) formed between the rings (2, 3) of ball or roller bearings of a large size, and is subjected to strong movements and friction wear. The sealing means is anchored using a cover (9) in contact with the body of the sealing means, and using a securing element (8) screwed to the external ring (3). The sealing means has two V-shaped radial lips (10, 11) in contact with the internal ring (2). From the bisector of said lips (10, 11) extends a guide system having a shaft (12) which is either combined with protrusions (15, 16) on the surface thereof, or with a hole (20) in the centre and a narrowing, and which ends in an arrow-shaped point having at least two lips with axial pre-loading (13, 14), which can be a number of lips (17, 18, 19). The end part of the shaft (12) and the arrow-shaped point are introduced into a rectangular groove (7) formed in the internal ring (2). |
