Crusher with stationary and movable jaws at jib distal end of constructional vehicle - has auxiliary portion with flat face on stationary jaw opposite to movable jaw

摘要

The stationary (3) and the movable jaw (4) of a crusher are fitted to a distal end of a constructional vehicle (M) working jib (b) such that the broken natural stone (W) etc. is crushed by the closing and opening of the crusher jaws. On the stationary jaw is releasably fitted an auxiliary portion, opposite to the movable jaw such that its surface, facing the movable jaw, is flat. Pref. the auxiliary portion is slidably fitted to the stationary jaw. It may be fitted by a dovetail fin and groove on the auxiliary portion and jaw respectively. USE/ADVANTAGE - For quarried nature stone, etc., with improved efficiency, reliable operation and long service life.