Patent ID: 8328125
Filing Date: 2012-12-11
Classification: B02C

Abstract:
1. A gyratory crusher comprising: a bowl shaped as a cone with its wider opening approaching a top of the crusher; a head assembly shaped as a cone, centrally located within the bowl and having its larger diameter at a lower end of the bowl; a cylindrical eccentric assembly including an eccentric central volume in which the main shaft is held so that, as the eccentric assembly rotates, the mainshaft gyrates, with the eccentric assembly rotating about a center hole within a central hub of the crusher; and a ring gear attached to and rotating the eccentric assembly, and wherein the ring gear is driven by a gearbox assembly comprising a drive shaft, a drive shaft gear, a first gear set and a second gear set, said gearbox assembly utilizing a rotational movement of the drive shaft to drive the first gear set which has a first gear set shaft and which is configured to have a rotational movement which is 90 degrees to the rotational movement of the drive shaft, said first gear set driving a second gear set which drives the ring gear of the eccentric assembly, said second gear set having a second gear set shaft, wherein the first gear set shaft and the second gear set shaft are parallel to each other.