A gyratory crusher for comminution of material fed into the crusher. The gyratory crusher includes an upper crusher frame for supporting one or more wear parts. The upper crusher frame is configurable between an operation mode and a rotation mode. The gyratory crusher further includes a lower crusher frame, wherein the upper crusher frame in the operation mode is in engagement with the lower crusher frame. The gyratory crusher further includes a rotation device configured to rotate the upper crusher frame in relation to the lower crusher frame. The rotation device includes a gear ring configured to be rotatable relative to the lower crusher frame around a vertical axis. A method, and a retrofitting kit, for rotating an upper crusher frame of a gyratory crusher relative to a lower crusher frame of the gyratory crusher are also disclosed.

A gyratory crusher spider arm shield for releasable mounting to a spider arm is mounted in a position above and around the spider arm via locating feet and is maintained in the position by a fixating ring extending circumferentially around the spider arms and positioned at and above a perimeter of the spider.

A gyratory crusher and a spider bushing assembly for supporting a spider bushing within the central hub of a gyratory crusher. The spider bushing assembly includes a spider bushing and a means for adjusting the distance between the outer flange of the spider bushing and a support shoulder formed within the central hub of the spider. The means for adjusting allows the position of the spider bushing within the internal bore of the central hub to change while maintaining an interference fit as a result of wear following use of the gyratory crusher. In one embodiment, one or more annular shims are positioned between the bearing support shoulder of the central hub and the outer flange of the spider bushing. Upon wear, one or more of the shims can be removed to improve the interference fit between the spider bushing and the internal bore formed within the central hub.

A clearing cylinder including a rod, a lower cylindrical housing, an upper cylindrical housing, the rod being attached to a piston assembly. The clearing cylinder further includes a first outwardly extending cylindrical flange attached to one end of the lower cylindrical housing, a second outwardly extending cylindrical flange attached to an opposite end of the upper cylindrical housing, and fasteners for fastening the first and second flanges to each other. The clearing cylinder also includes a head assembly captured between the lower cylindrical housing and the upper cylindrical housing adjacent the first and second flanges, the head assembly having therein an inner surface defining a bore through which the rod passes, the inner surface, having a first circumferential recess, and a first wiper ring mounted in said first circumferential recess.

A crushing machine includes: a frame, a tank, a cone placed inside the tank, the machine further including a device for vibrating the tank with respect to the frame; the machine being characterized in that the device for vibrating the tank includes at least two vibrators which are mounted on the frame, each vibrator being rotated about a longitudinal axis of the frame by a motor, each motor driving the vibrator with which it is associated independently from one another.

Inertia cone crusher for crushing materials includes a body with an outer cone and an inner cone arranged inside, on whose drive shaft an unbalance weight is provided with the aid of a slide bushing and connected via a transmission disk coupling to a combined moving dynamic assembly comprising a counterbalance weight and a counterbalance weight slide bushing, the assembly connected to a gear transmission and a motor, and has an improved plain journal bearing. The plain bearing is installed between the flange and the counterbalance weight, bearing the load from the crusher's moving part, and includes a base ring and an upper ring, the base ring having a spherical bottom surface and its mating recess on the flange's top surface. The bearing enables the moving dynamic assembly's rotation around the axis, using a hydrodynamic sliding mode, with radial oil slots additionally provided on top surface of the base ring.

There is disclosed a crusher for crushing material into finer particulates, the crusher including a housing that encloses a crushing head mounted on a shaft. The housing supports an outer crushing shell, while the crushing head supports an inner crushing shell. The two crushing shells cooperate to form a crushing gap therebetween. The crusher further includes a drive mechanism joined to the shaft for generating movement of the inner crushing shell relative to the outer crushing shell. The drive mechanism includes at least three drive units joined to the shaft and configured to impart a pulling force on the shaft. Also disclosed is a method of operating the crusher, wherein each of the drive units are selectively activated and deactivated to selectively generate orbital or gyratory movement of the crushing head relative to the outer housing.

A gyratory crusher including a main shaft that can be installed into a main frame. The gyratory crusher include an alignment system having a stationary dust collar and a separate alignment ring attached to the dust collar. The alignment ring includes a tapered contact surface extending from a lower outer edge to a top edge to help guide a dust seal past the alignment ring and into contact with an outer surface of the dust collar. The dust seal is received within a receiving cavity of a dust seal retainer mounted to the main shaft of the crusher. A series of alignment openings extend through the dust seal retainer to provide access to an outer edge of the dust seal. The position of the dust seal can be adjusted based upon measurements of the outer edge. The main shaft includes a chamfer on the lower end guide the main shaft into a bushing assembly.

A gyratory crushing apparatus for frangible or friable material comprises: a bowl having a chamber for receiving the material and a discharge opening disposed at the base with a central axis and a gyratory axis extending at an angle to the central axis; a crushing head and a drive assembly. The discharge opening defines a throat with a circumferential wall and the crushing head is disposed within the discharge opening. The crushing head has a crushing face in spaced relation to the circumferential wall of the throat defining a nip between the circumferential wall and the crushing face. The drive assembly includes a transmission and a rotatable eccentric shaft for driving the crushing head within the bowl and about the gyratory axis in a notating motion. The bowl also comprises a feed section and a discharge section, each defined by a wall and spaced by a mid-section, wherein thickness of a wall defining the mid-section is greater than a thickness of the discharge section wall.

Disclosed is a method for dissociating different constituents of a heterogeneous artificial material, including the fragmentation of the material in a fragmentation machine by material-bed compression, the machine including at least one vibrator and a system for controlling at least one parameter of the fragmentation force from the speed of rotation of the vibrator and the phase shift angle between at least two vibrators. The control system adjusts a rotation parameter of the vibrators so as to generate a fragmentation force by the machine allowing to at least partially dissociate at least one of the constituents of the material from the other constituents.