Effect of pick arrangement on the load of shearer in the thin coal seam

Abstract：According to the theory of single tooth broken model in coal miner,got the drum load spectrum with time by the application of Matlab to simulate the thin seam miner cutting.And used this software on a typical four thin seam conditions,respectively,using four different arrangement（the sequence,the punnett square,the aberrance-1 and the aberrance-2） of the roller cutter for cutting in the simulation.Through analysis and comparison of the load spectrum of four different arrangements in different conditions,obtained the working range for every arrangement of the picks,which can provide a more reliable theoretical basis for thin coal seam shearer drum design and selection.The research results indicate that：if working in the general conditions,in order to improve the rate of lump coal,recommend the aberrance-1 and the punnett square;in poor conditions,particularly with the large impact,recommend the aberrance-2 and avoid the use of the punnett square arrangement;in the case of containing many faults in the coal,inevitable to cut a large number of the roof and floor rocks,the recommended arrangement is the sequence.