Patent ID: 8047460
Filing Date: 2011-11-01
Classification: B02C,Y10T

Abstract:
1. A gyratory crusher comprising an outer shell, which is attachable in a frame forming part of the crusher and having a frustoconical supporting surface which is facing obliquely downwards and inwards for supporting a lower portion on the outer surface of the outer shell, the outer shell having in the upper part on its outer surface a collar, which comprises a plurality of radially outwardly-extending outer lugs, which are movable, from below, past the frustoconical supporting surface and between radially inwardly-extending inner lugs of a ring, which is vertically adjustable relative to the frame, the inner and outer lugs having mutually corresponding contact surfaces, which are adapted, by relative rotation of the ring and the outer shell, to be positioned in an at least partly overlapping manner and, upon lifting of the ring relatively to the frame, to lift also the outer shell, thereby bringing said lower portion of the outer shell into abutment against the supporting surface of the frame, wherein the contact surfaces of the inner lugs are facing obliquely upwards and inwards and the contact surfaces of the outer lugs are facing obliquely downwards and outwards, so that when the contact surfaces are positioned in an at least partly overlapping manner lifting of the ring causes not only the outer lugs to be lifted by means of the inner lugs, but also the inner and outer lugs to be brought into radial abutment against each other.