Interface elements for shredder mills

Abstract

An interlocking interchangeable interface element and rotor assembly comprising at least two rotor bodies, a plurality of interface element mounting cut-outs arranged substantially radially in the rotor bodies, a plurality of interface elements arranged to be mountable in the cut-outs and a plurality of peripheral mounting holes arranged to receive rotor body bundling means to hold the rotor bodies fixedly against each-other and to prevent the hammers to exit the interface element mounting cut-outs. Each of the interface elements has a substantially oblong and planar shape; a bottom end shaped to interlock with the cut-outs; a leading edge facing the direction of rotation of the rotors; a trailing edge facing the side opposite to the direction of rotation; and interface element tip mounting means, arranged in an upper mounting portion of each interface element. The interface elements further have a bottom portion with a generally rounded surface arranged to cooperate with a generally rounded bottom portion of the cutouts, a heel portion facing the direction of rotation and shaped to cooperate with a recess portion of the cutouts, so that during insertion of an individual interface element in one cut-out, by inserting the bottom portion first, the generally rounded surface is slidable into a relief recess portion of the cut-outs, permitting the heel portion to clear the protruding portion and the interface element to be seated with the bottom portion in the generally rounded bottom portion of the cut-outs. The individual interface element is thus locked from movement in a radial direction in the rotor bodies. The interface elements further have a first force absorbing surface, arranged on the trailing edge, and a second force absorbing surface, arranged on the leading edge, and interface element securing fasteners, arranged to receive the rotor bundling means for securing the interface elements to the rotor bodies.