Research On Modeling And Simulation Of Shearer Based On Virtual Prototype Technology

Shearer is one of the main equipment in coal mining process, which includes cutting units, travel units, haulage units and other related equipment. The underground working environment is very serious, so the loads on the shearer's parts are very complex. It is difficult to fully understand the dynamic characteristics during the process of coal mining by using traditional methods. But virtual prototyping technology provides a new approach to study.Taking a coal company designed MG300/700-WD electrical traction shearer as project object, force mathematical model has been built by MATLAB, and solid model of the shearer has been built by three-dimensional solid modeling software Pro/E,modal neutral files of the key parts have been generated by ANSYS and imported to ADAMS by using corresponding modal interface technology. At last rigid-flexible coupled model has been formed in ADAMS. Key technologies like loads input, adding constraints and boundary conditions during the cutting process have been solved. At the same time, specific measures about ensuring simulation accuracy, improving simulation speed and shortening the simulation time have proposed. Thus co-simulation's operability about Pro/E, MATLAB, ADAMS and ANSYS has been greatly improved. Based on simulation analysis of the rigid-flexible coupling virtual prototype technology, the design problems of key parts such as the serious deformation and large stress on haulage unit's shell, the out-of-tolerance of coaxial errors of haulage unit's planetary part II, etc have been found. According to simulation results, improvement measures and optimization scheme are proposed. This method provides a new way to design and research the large mining equipment which are working in complex environment. It also has enormous significance and wide application prospects.