US 12,083,530 B2 · Crusher

Abstract

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.

Claims20

Dependent claims

A crusher for crushing material into finer particulates, the crusher comprising

a housing supporting an outer crushing shell;
a crushing head located within the housing and being mounted on a rotatable shaft, the crushing head supporting an inner crushing shell that cooperates with the outer crushing shell to form a crushing gap therebetween;
a coupling mounted on the rotatable shaft, whereby the coupling is able to rotate around the rotatable shaft, and
a drive mechanism comprising at least three drive units joined to the coupling and being configured to generate movement of the inner crushing shell relative to the outer crushing shell.

1 more element

A method of operating a crusher having a housing supporting an outer crushing shell and further having a crushing head located within the housing and being mounted on a rotatable shaft, the crushing head supporting an inner crushing shell that cooperates with the outer crushing shell to form a crushing gap therebetween, the method comprising

mounting a coupling on the rotatable shaft, whereby the coupling is able to rotate around the rotatable shaft,
joining a drive mechanism comprising at least three drive units to the coupling for generating movement of the inner crushing shell relative to the outer crushing shell;
and
selectively activating each of the drive units to generate movement of crushing head relative to the housing,
wherein the drive units are hydraulic cylinders operable by a hydraulic drive mechanism, and wherein the method includes the step of replacing a portion of hydraulic fluid used in the hydraulic drive mechanism when each of the cylinders is selectively activated.

2 more elements

Dependencies are inferred from the claim text.

Crusher

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Crusher

Life of this patent

Abstract

Claims20