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Shearer is a widely used in the size of coal mining equipment. Shearer tapping the substance of the process of the coal wall pick cutting coal and rock, drum cutter with rollers with rotating movement (friction when the cutter pick holder can not balance a cutter with coal and rock frictional force, the cutter has a certain rotation, to a certain extent around the cutter to achieve uniform wear or grind), the cutter with respect to the coal or rock shocks and collisions, so as to achieve the purpose of coal and rock shedding. Pick cutting coal and rock is a fairly complex process, either by force or lump coal efficiency is influenced by many factors, such as the cutter mounting angle, bevel angle, traction speed, traction, cutting depth, QUALITY the physical characteristics (such as the degree of uniform density, hardness, ductility, brittleness), etc.. Difficult to do this all relates to the factors and their interactions to carry out a complete and comprehensive analysis, but often the usual practice is to take part factors do by force or lump coal efficiency analysis cutter. This paper cutter mounting angle, cut bevel angle cutter declination, traction speed, cutting depth of five factors studied in lump coal efficiency. Shearer's work environment is extremely complex, to be tested under actual working conditions of the shearer, measurement, or real-time monitoring is unrealistic. In view of this situation, this article introduces ANSYS / LS-DYNA dynamics simulation analysis program to simulate Pick Cutting impact collision and crushing of coal and rock in the process. 3D solid modeling software Pro / Engineering established through the use of rollers, solid model and finite element model of the cutter and the coal wall shearer cutting coal and rock dynamic process was successfully completed in ANSYS / LS-DYNA Simulation; in the post processor LS-PREPOST2.1 arbitrary extracting data of interest, such as the the XYZ axial stress contours and the total stress cloud the XYZ axial velocity, the acceleration curve and the speed, the acceleration vector vector and curves and curves, curve and force the XYZ axial force on various energy curve, quality curve analysis hourglass than the energy of the internal energy and draw basic reliable simulation results data conclusions; analysis using two-factor analysis of variance methods in mathematical statistics cutter mounting angle cut bevel angle, declination, cutter, traction speed, cutting depth lump coal efficiency, at the same time, the use of orthogonal Design Test Methods cutter structure parameters: cutting tooth mounting angle, the cutter cone angle cutter declination three parameters were optimized to obtain the optimal cutting tooth structure parameters: cutter installation angle of 50 °; truncated The bevel angle of 90 °; declination of 15 °. As we all know, the shearer design is a complex system engineering, simulation analysis program ANSYS / LS-DYNA provides a convenient means of virtual analysis undoubtedly shearer design process scientifically assisted Shearer the structural design.
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