BEARING FOR A SHAFT OF A GYRATORY CRUSHER AND METHOD OF ADJUSTING THE GAP WIDTH OF THE CRUSHER

摘要

A gyratory crusher (1 ) has a crushing head (12) fixedly attached to an upper portion (2b) of a substantially vertical shaft (2), on which crushing head a first crushing shell (16) is mounted, and a frame (4) on which a second crushing shell (18) is mounted. The second crushing shell (18) defines, together with the first crushing shell (16), a crushing gap (20). The gyratory crusher (1 ) has a space (22) adapted to contain liquid. The space (22) is defined by a piston (2), which is formed at least partly of the lower end (26) of the shaft (2), a cylinder (24), which is formed at least partly in an eccentric assembly (10), and a bottom element (28). The space (22) is adapted to form a cushion (23) with the aid of said liquid, so that said cushion (23) can serve as a thrust bearing transmitting vertical forces from the crushing head (12) to the bottom element (28).