Abstract:Due to the unreasonable design of jaw crusher in the crushing system of Chengmenshan Copper Mine concentrator，the crushing effect is poor，the detection ability of the equipment running state is weak，the phenomenon of jaw cavity breaking and bucket blocking often occurs，and it is difficult to adjust the discharge port. Through the research of jaw crusher motor jaw movement track，tooth plate structure，crushing cavity type，discharge port adjustment device，equipment operation monitoring， the problems such as frequent blocking bucket and difficult adjustment of discharge port of jaw crusher are solved.