Performance Analysis And Lightweight Design Of Single Column Heavy-duty Stacker

With the advent of the global digital and intelligent revolution,the field of logistics and warehousing has achieved blowout development.Intelligent warehousing equipment system,with its advantages of low energy consumption and high integration,saves land and labor costs,and provides a positive role in promoting the development of logistics and warehousing.As the core equipment of the intelligent warehouse equipment system,the structural stability and reliability of the stacker will determine the operation efficiency and economic benefits of the logistics warehouse system.In this paper,according to the spatial layout and storage requirements of the automated warehouse,the structure design scheme of the single column heavy-duty stacker is proposed.On the basis of the research on the collision safety of mechanical properties and motion characteristics of the designed stacker,the light weight design of the single column heavy-duty stacker is carried out,which effectively improves the problems of material redundancy and unwieldy structure in the design of stacker.The main research work of this paper is as follows:1.According to the working environment and operation requirements of the stacker,the structure scheme of the key components and the whole machine is drawn up,and the solid model and virtual assembly are completed with the help of 3d design software.On the basis of necessary simplification and mechanical theory,the deflection equation of column and lower beam under static and accelerated operation is established.The stiffness and strength of metal frame of stacker are studied by finite element method.The results of theoretical analysis and finite element method are compared to verify the reliability of the finite element method.2.Based on the virtual prototype platform,the multi-body dynamic model of the stacker is established,and the dynamic performance of the stacker is studied by using the kinematics,dynamics and collision theory of the multi-body system.By solving the kinematics problem of the multi-body system of the stacker,the correctness of the model and the control function can be quickly verified,which provides the application basis for the dynamic analysis.In the aspect of motion control of stacker,the effects of different speed control curves on operation efficiency and operation stability of stacker are discussed.The simulation results show that the s-type speed control curve can effectively weaken the impact and vibration in the operation of the stacker.By analyzing the dynamic behavior of the stacker after high speed collision with the buffer block,the safety problem of the stacker is studied,which provides a reference for improving the safety performance of the stacker.3.Based on the study of lightweight design of stacker,the characteristics and advantages of segmented column are given full play,and the influence of column size parameters on lightweight design is discussed.On this basis,with the minimum column mass as the optimization objective,the genetic algorithm is used to optimize the column structure,and the optimal size scheme was obtained.The strength,stiffness and kinematics performance of the optimized column structure are analyzed by simulation,and compared with that before lightening.The results show that the weight of the column can be reduced by 29.3%,which means that the lightweight effect is obvious and can meet the requirements of the stacker.The lightweight design method of column structure improves the material utilization rate,reduces the production cost,and realizes the lightweight design of stacker to a certain extent,which can be used for reference in the same type of lightweight design.