Research On Optimization Method In Drive Arrangement And Energy Saving Of Belt Conveyor

As the most important continuous conveying equipment for solid bulk materials,belt conveyors are widely used in various related industries due to their economic,efficient,reliable and safe characteristics.As modern belt conveyors move toward high belt speeds,long distances and large volumes,larger conveyor loads and higher belt tensions place higher demands on the drive design of belt conveyors.Multi-point drive technology is also increasingly used in the design of modern belt conveyors,but the drive arrangement and drive force distribution of multi-point drive belt conveyors have not been well resolved.At the same time,as the conveyor gradually develops in the direction of large-scale,the driving power continues to increase,improving the conveying efficiency of the conveyor and further reducing the transportation cost have become an important direction for the research and development of the belt conveyor industry.In order to study the optimization problem,the power and tension calculation software of belt conveyor was developed by using GB/T36698-2018 belt conveyor design calculation method.Aiming at the optimization problem of multi-point drive belt conveyor drive layout,the horizontal position of the intermediate drive arrangement and the driving force distribution coefficient of each drive are the design variables,and the maximum tension of the conveyor belt is taken as the objective function,and the mathematical model of the drive arrangement optimization is established.An optimization algorithm using the modified Powell method is designed to obtain the intermediate drive arrangement position with the smallest maximum tension of the conveyor belt and the driving force distribution coefficient of each drive.The equivalent simulated friction coefficient as a function of belt speed and material filling rate was calculated by CEMA method.Under the condition of constant conveying quantity,the energy-saving optimization mathematical model with the belt speed as the design variable and the driving power as the objective function is established,and the constraint conditions of belt speed,material filling rate,conveyor running resistance and conveyor belt tension are determined,the belt speed optimization result with the smallest driving power is obtained.The force analysis of the curved section of the belt conveyor is analyzed,and the main resistance,lifting resistance and the forward resistance of the roller are introduced,and the accurate calculation formula of the additional resistance of the curved section is derived.The demand analysis,summary design and detailed design of the belt conveyor optimization design software were carried out,and the input,output,calculation and database related modules were analyzed and designed.The software included GB/T36698-2018 and CEMA7 calculation methods,multi-point drive conveyor drive layout optimization,CEMA equivalent simulation friction coefficient calculation and conveyor energy-saving optimization,using Visual Basic.NET programming language to develop belt conveyor optimization design software,and achieve drive layout optimization and energy-saving optimization.