关键词: 高效节能, 混凝土螺旋输送机, 多目标优化, NSGA-Ⅱ

Abstract: To solve the problems of high energy consumption and low efficiency of the screw conveyor in the production process of small concrete precast parts,a high-efficiency and low-energy concrete screw conveyor design parameter optimization method was proposed.The speed and mechanical model of the concrete screw conveyor during the working process was established,which revealed many factors that affect the energy consumption and efficiency of the conveying process.Basically,to minimize the total energy consumption and maximize the conveying efficiency in the screw conveying process,a concrete screw conveyor multi-objective optimization model for design parameters was established.The screw pitch,speed and conveying length were used as optimization variables in the optimization model.Then,an optimization solution method based on fast elitist Non-dominated Sorting Genetic Algorithm (NSGA-Ⅱ) algorithm was proposed.By comparing the results of multi-objective optimization with that of single-objective optimization,the result showed that the proposed optimization method could effectively reduce energy consumption while improving transportation efficiency.

Key words: high efficiency and energy saving, concrete screw conveyor, multi-objective optimization, fast elitist non-dominated sorting genetic algorithm