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Stiffness modeling and optimization of multi-stages fork of double column stacking machine
Published:2023-03-23 author:LV Yong-feng. Browse: 1319 Check PDF documents
Stiffness modeling and optimization of multistages 
fork of double column stacking machine


LV Yong-feng1,2

(1.Intelligent Manufacturing College, Zhejiang Institute of Mechanical & Electrical Engineering, 

Hangzhou 310053, China; 2.School of Mechanical Engineering, Zhejiang University of 
Technology, Hangzhou 310014, China)


Abstract: To solve the problem that the multi-stages forks of stacking machine were prone to large deformation when picking up the goods, the end stiffness modeling and design optimization of the multi-stage forks were carried out based on the mechanical theory and the finite element method. Firstly, the overall structure and working principle of stacking machine were presented, and the structure of fork component and the working principle of the multi-stage linear differential forks were analyzed in detail. Secondly, based on theoretical mechanics and material mechanics, the mechanics model of fork component was established, and the deflections of fork component under multiple sets of loads were solved. Then, the finite element model of fork component was established to solve the end stiffness of fork component and compare with the theoretical calculation results to verify the accuracy of theoretical calculation. Finally, the parameters of fork component were optimized, the optimal cross-section parameters of the multi-stage fork were selected, and the static finite element analysis of the fork component after optimization was completed. The research results show that the overall stiffness of the optimized multi-stage is increased by 14.5%,the effect is good in practical application.

Key words: loading and unloading machinery; multi-stage linear differential fork; fork structure; end stiffness modeling; fork overall stiffness; static analysis

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