IMPELLER SHOE ASSEMBLY

摘要

An elongated impeller shoe assembly (10) is described for a vertical shaft centrifugal impact crushing machine (11) for increasing the effective utilization of the assembly and for substantially reducing the cost to utilization ratio. The assembly (10) includes an elongated supporting base member (28) for attaching to a turntable bracket (20) in which the base member (20) is cast of a high strength steel alloy material. The base member (28) has a wide longitudinal female dovetail groove (54) formed in a front face (38) thereof extending between an inner end (32) and an outer end (34). The groove (54) has a shallow taper downward from the inner end (32) to the outer end (34). The assembly (10) includes a wear resistant member (30) mountable to the base member (28) for receiving the material from a central distribution disc (15) and directs the material radially outward along a front face (82). The wear resistant member (30) has a complementary male dovetail projection (100) formed on a back face for slidably fitting into the female dovetail groove (54) to releasably secure the wear resistant member (30) to the base member (28). The base member (28) and the wear resistant member (30) have respective shoulder and abutment surfaces (48) and (108) for engaging each other to maintain a loose fit between the dovetail elements.