Under the condition of that transport distance and transport quantity known,in order to make the initial investment of the belt conveyor be more reasonable,taking the following as design variables,such as the width of belt,the roller spacing of loading and return branch,and the price coefficient of belt,the roller of loading,and the return branch based on statistical data,an objective function and constraint conditions are established. The procedures may be write based on VB6. 0,and optimization calculation...