Study of the influence of structure and parameters of loading and transporting devices of a cleaning combine on the efficiency of coal loading

摘要

The article analyzes the factors that influence the process of unloading coal from the zone of its separation by cutters from the massif and loading the destroyed rock mass to the face conveyor by screw executive bodies of shearers. The modeling of the process of loading coal with a shearer to the face conveyor was carried out in order to improve the quality of loading. When modeling, the program EDEM 3D was used. As indicators of the effectiveness of the process adopted: productivity and specific energy consumption. Simulation of the process of loading coal with a shearer was carried out for the following options: the crosssectional area of the loading window of the auger varied from 0.55 to 1.00 m~2; the gap between the screw and conveyor is from 250 to 450 mm; combine feed speed - from 2 to 6 m/min; the angles of winding the blades were taken from 16° to 24°. The purpose of research is to find a comprehensive technical solution that provides resistance to the movement of coal flow, coal circulation in the stream, achieving the completeness of cleaning the soil and loading coal on the conveyor, the formation of a rational section of the coal flow on the conveyor.