Impeller locking means for impact crusher rotor

摘要

A locking means for the impellers of an impact crusher rotor is disclosed wherein the impellers are partly within axially extending peripheral slots which are diametrically opposite each other; semi-cylindrical cavities are formed in the face of the leading wall and the face of the impeller which cooperate to define a cylindrical bore extending parallel to the axis of the rotor; within the cylindrical bore a wedge lock is inserted which is a two-part device each having a flat surface complementary to each other and machined at an angle to the outside diameter of the composite wedge lock; the diameters of the outer surface of each wedge portion is centered at different locations thereby effectively preventing rotation of the wedge lock; a key on the convex surface of the smaller wedge portion cooperate with a recess formed in the semi-cylindrical cavity of the face of the leading wall to prevent axial movement of the wedge portion; a knock-out rod is provided to release the wedge lock for replacing of the impeller.