Study Of Dynamic Behaviour Of Coal Mining Cuts Headquarter

Coal winning machine is the main mining equipment for mining coal wall, along with its application range increasing, constantly,different working condition requires its cutting ability more than ever before. Coal winning machine’s working condition is complicated and variable, especially when it’s cutting large mining height and hard coal seam working face, affected by the strong impact load, the working reliability and stability of coal winning machine get low. For thick-seam coal winning machine’s cutting part,its overall dimension and roller’s cutting load are big, roller is of high quality. The three factors make some of the key components of get damaged due to overload at work, so it’s very necessary to do dynamic simulation study for the drive system of coal winning machine cutting part.Choose a certain type thick-seam coal winning machine’s cutting part as engineering research object, use virtual prototype technology, then set up a rigid-flexible coupling model of coal winning machine cutting part working under complex occurrence condition; Based on the coal-broken theory of coal winning machine, using MATLAB software to simulate the load curve on cutting drum consistently with the actual working condition, then add to the virtual prototype model; make the gear, the key parts of cutting part’s drive system, flexibile in ANSYS; Finally do dynamic simulation analysis on coal winning machine cutting part with the RecurDyn/Professional, provide theoretical basis for design and optimization of thick-seam coal winning machine’s cutting part; build feedback control of motor and mechanical model by extracting shaft torque of a shaft connected to the motor torque in RecurDyn post-processing,study the interaction effects between motor’s speed and load of the drive system in cutting part under dynamic loading in simulation working condition.In this paper, the drive system of the thick-seam coal winning machine cutting part is studied, provides a new method and feasible means for design and research for large mining equipment under complicated working condition, and it has a good application prospect.