ROTOR CONSTRUCTION FOR IMPACT CRUSHER

摘要

A rotor for an impact crusher in which the hammers comprise breaker bars disposed tangentially to a common circle, with means for adjusting the breaker bars tangentially to compensate for wear. The rotor Comprises a tubular member having at least three flat sides of uniform width, with an end disc welded or otherwise secured to each end thereof. A preferably half-moon shaped block is secured to the inner face of each end disc with the flat faces thereof spaced from and parallel with each flat face of said tubular member. This forms grooves within which the ends of the breaker bars are adjustably mounted. Slots of greater widths than the breaker bars are formed in the discs intermediate the flat faces of the tubular member and the flat faces of the corresponding half-moon shaped members. An adjusting block is slidably mounted in each slot and has a trunnion on its inner side received in an aperture in the adjacent end of the corresponding breaker bar. As an alternative, the apertures may extend entirely through the breaker bars, and shear rods may be located therethrough and in openings in the adjusting blocks. Removable shims may be secured in each slot on each side of the corresponding adjusting block. Wedges are inserted in pockets in the tubular member for forcing the breaker bar against the half-moon blocks.