| 摘要 |
A gyratory crusher including a crusher head on which a first crushing shell is mounted, a frame on which a second crushing shell is mounted, the first and second crushing shells forming a crushing aperture. A drive device is adapted to rotate an eccentric to which the crusher head is so connected as to be caused, during rotation of the eccentric, to perform a gyratory movement for crushing of material which is introduced into the crushing aperture. A dust seal is adapted to seal a gap between the frame and a fastening portion situated close to the crusher head. The dust seal includes a seal bellows and a seal slide ring. The seal slide ring is connected sealingly to a lower portion of the seal bellows and has a lower slide surface adapted to slide along, and to sealingly abut, with a substantially vertical abutment pressure determined by the inherent weight of the seal slide ring and by the influence of the seal bellows, against an upper slide surface provided on the frame. An upper portion of the seal bellows is sealingly connected to the fastening portion so that rotation of the crusher head causes rotation of the seal slide ring about a substantially vertical axis of rotation.
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