INNER SHELL INTENDED FOR A GYRATORY CRUSHER, AND METHOD OF ATTACHING SUCH A SHELL ON A CRUSHING HEAD

摘要

The inner replaceable shell 4 of a gyratory cone crusher is provided with projecting lugs 36 and bolt apertures near the top of the shell. The shell is placed on to the crushing head 3 from the narrow top portion 12 toward the wider bottom portion 10 so that the lugs 36 engage with the notches 38 in the crushing head 3 to prevent rotation of the shell with respect to the head, and bolts aligned parallel with the rotational axis of symmetry of the crusher head are tightened into threaded apertures 18 to hold the shell onto the head. Springs may be inserted to surround the bolts and between the top surface of the crushed head the bottom of the bolt flange of the shell so that even when the bolts are tightened there is axial movement possible between the head and the shell.