Mainly comprises crusher, motor, fluid coupling and hydraulic opening/closing device, is different from common crusher structurally Adapts large rotator and arrayed compound hammerhead distribution Large yield Small discharging granularity Ideal discharging curve Non-grate design Strong adaptability to material moisture Smooth discharging and no blocking Developed by absorbing foreign advanced technology concept and combining status quo of domestic coking coal, power generation coal and other industrial coal Ideal for materials with crushing brittleness and much moisture including wet coal, limestone, ore and clinker in industries of metallurgy, electric power, mine and building material.