Patent ID: 7823820
Filing Date: 2010-11-02
Classification: B02C,Y10T

Abstract:
1. A method of attaching, in a gyratory crusher, an inner shell to a crushing head having a lower portion and an upper portion that is narrower than the lower portion, the inner shell being configured to define, together with an outer shell of the crusher, a crushing gap for receiving a material to be crushed, comprising: bringing the inner shell into contact with the crushing head by mounting the inner shell on the crushing head in a direction from the upper portion thereof towards the lower portion thereof; using at least one lug to prevent unlimited rotation of the inner shell, when mounted on the crushing head, relative to said crushing head; and pressing the inner shell towards the lower portion of the crushing head by way of at least two threaded bolts, which are arranged in the upper portion of the crushing head such that their longitudinal direction is substantially parallel to the symmetry axis of the crushing head and then tightened.