Hydraulic impact system of impact rotary hydraulic roofbolter power head is studied

and the dynamics model of dynamic head impact system is established.According to the impact rotary hydraulic roofbolter spline

the finite element model is established

and the virtual fatigue simulation analysis is made for model by using ANSYS.The predicted fatigue life of the component

life safety factor

dangerous parts and other information are obtained.So the force

reliability

fatigue life and other situation of the component are quickly determined;the product design cycle is shortened and the service life of parts is improved.