CENTRAL SHAFT FOR A GYRATORY CRUSHER AND A GYRATORY CRUSHER COMPRISING SUCH A SHAFT.

摘要

A central shaft (18) for a gyratory crusher, which comprises a crushing head (22) on which a first crushing shell (30) is mounted; a frame (12) on which a second crushing shell (32) is mounted, which second crushing shell (32) defines, together with the first crushing shell (30), a crushing gap (34); and a driving device (24), which is arranged to rotate an eccentric (20) about said central shaft (18) and thereby to cause the crushing head (22) to execute a gyratory movement for crushing of material that is introduced in the crushing gap (34). The central shaft (18) has a cavity (44) in which are accommodated an anti-reverse (42) and a torque limiter (40), the anti-reverse (42) and the torque limiter (40) being adapted for connection to said crushing head (22) for restricting spinning.