基于EDEM的输送带动态跑偏仿真分析

Simulation Analysis of Dynamic Deviation of Conveyor Belt Based on EDEM

针对带式输送机在运输物料过程中由于落料不均易出现输送带跑偏的问题,通过离散元法进行分析。运用单因素控制变量法进行EDEM仿真计算,分析了不同落料高度、不同落料速度及不同湿度状态下对物料流在导料槽出料口处速度与输送带跑偏的影响。通过对比与研究发现,物料落料高度、落料速度及物料颗粒湿度对带式输送机转运系统会产生影响,在此情况下单一改变某一参数会降低输送带跑偏趋势。研究发现,在一定条件下输送带跑偏趋势随落料高度增加而增加,也随落料速度增加而增加,但是与物料湿度成相反趋势,即物料湿度增大,输送带跑偏趋势减小。同时需注意物料湿度增加,物料附着导料槽影响下段输送带受料。

Aiming at the problem that the belt conveyor is prone to deviation due to uneven blanking in the process of transporting materials,the discrete element method is used to analyze it.In this paper,the single factor control variable method is used for edem simulation calculation.The effects of different blanking height,blanking speed and humidity on the speed of material flow at the outlet of the guide chute and the deviation of the conveyor belt are analyzed.Through comparison and research,it is found that the material blanking height,blanking speed and material particle humidity would have an impact on the transfer system of belt conveyor.In this case,changing a single parameter would reduce the deviation trend of the conveyor belt.The study finds that:under certain conditions,the deviation trend of the conveyor belt increases with the increase of the blanking height,and also increases with the increase of the blanking speed.However,the deviation trend of the conveyor belt is opposite to the humidity of the material.The greater the material humidity,the smaller the deviation trend of the conveyor belt.At the same time,it should be noted that with the increase of material humidity the material is easy to attach to the material guide chute,affecting the material receiving of the lower conveyor belt.