Rock crushing machine

摘要

The machine is comprised of a main body (32), a bonnet (14) which rests on the upper frame of the main body (32) and a concave holder (66) threadably inserted into the bonnet (14). The bonnet (14) is maintained in intimate contact with the main body (32) by means of a plurality of tramp iron cylinders (18) while the concave holder (66) is screwed into the bonnet (14) by means of an adjusting gear (16) and matching pinion (58). The concave holder (66) is locked in position within the bonnet (14) by means of a plurality of locking cylinders (60) positively engaging a locking slide ring (64). A mantle (70) covered male conical member (28) is driven by a crown gear (36) and pinion (52) in an elliptical rotation within the confines of a concave die (68) thus crushing the raw rock on each near pass. The concave holder (66) will automatically lift and/or tilt off of the bonnet (14) in response to the individual or collective actions of the tramp iron cylinders (18) and their matching accumulators (80) which are reactive to an excess loading between the male conical member (28) and its mantle (70) and the concave die (68). A two part stepped slip seal (22) and (24) provide containment of excess lubricant while excluding abrasive particles from contact with critical components. The seal is incorporated as part of a thrust support (20) which rides against the underside of the male conical member (28) and absorbs crushing loads transmitted via the male conical member (28) and the concave die (68).