Research On Structure Optimization Of Automatic Sorting System's Telescopic Boom

As the main working component of blank take-out mechanism,the working performance of telescopic boom has a great influence to the operational efficiency of the sorting system. Aiming at the problems of large impact and vibration when it works, the telescopic boom structure of custom furniture automatic sorting system was optimized. The purpose is reducing the manufacturing cost in the condition of meeting the static and dynamic characteristics. Specific work is as follows:Firstly, the working principle and the existing problems of custom furniture automatic sorting system were introduced; the domestic and international application and development status of telescopic boom were summarized. The principle of particle swarm optimization(PSO),improvement research status and the application about mechanical optimization design were elaborated. These reviews provide the realistic basis and theoretical basis for the research of this paper.Secondly, the statics and dynamics analysis of telescopic boom were carried on, the statics model and dynamic model of telescopic boom were established. On this basis, with the section sizes of telescopic boom as design variables, with the cross sectional area of telescopic boom as objective function, in the constraint condition of meeting structural strength, stiffness, dynamic characteristics and the demands of the process dimension, the optimization mathematical model of telescopicboom was established.Thirdly, particle swarm optimization toolbox(PSOt) was used. Basic particle swarm optimization and different advanced particle swarm optimization(APSO) were used to calculate the minimum cross sectional area. By comparing and analyzing the optimization results of different algorithms, the best solution of objective function was got. The total cross sectional areas of the optimized telescopic boom decreased by 24.7%.Lastly, the 3D model of the telescopic boom was imported into finite element software for structural static analysis, modal analysis and harmonic response analysis. Maximum deformation and maximum equivalent stress of optimized telescopic boom were increased, but less than the allowable value and meeting the demands of working condition.The fundamental frequency of optimized telescopic boom was improved.Under common excitation frequency, maximum displacement response decreased by 48.2%. The finite element simulation results show that the static and dynamic characteristics of optimized telescopic boom can meet the requirement of the working condition.This paper drawing lessons from the literatures about the telescopic boom structure optimization experience of the cranes and other large construction machinery. The modern design methods such as particle swarm optimization and finite element analysis were applied to structure optimization of the sorting system's telescopic boom. It provides a feasible engineering case for structure optimization of sorting system's telescopic boom.