Study on spiral conveying performance of side shearer based on EDEM

In order to study the influence of different working parameters on the spiral conveying performance of side shearers， the EDEM software was used to establish a spiral conveying simulation model.The conveying rate and average mass flow rate were qualitative evaluation indicators.The range method was used to analyze the effect of the pitch， rotating speed and downward conveying tilt angle of the spiral conveying mechanism on the two evaluation indexes and the primary and secondary order， and finally， the matrix solution was used to obtain the optimal conveying combination and the primary and secondary order affecting the performance.The results show that the primary and secondary factors affecting the conveying rate are pitch， rotating speed and downward conveying inclination angle.The conveying rate increases with the increase of the rotational speed， and increases as the downward conveying inclination angle increases.The factors that affect the average mass flow rate are: primary conveying inclination angle， pitch， and rotational speed.The average mass flow rate increases as the downward conveying inclination angle increases， and increases with the increase of the pitch， and increase with the speed increase.The main and secondary factors affecting conveying performance are: pitch， rotation speed and downward conveying inclination angle.The optimal conveying combination is:the downward conveying inclination angle is 20°， the rotation speed is 80 r/min， and the pitch is 250 mm.The research results provide a theoretical basis for improving the spiral conveying performance of the side shearer.