Modeling And Finite Element Analysis Of Lifting Fixture And Tower Arm In Silo

With the implementation of the national green development policy,the amount of recycled resources recovery continues to grow,of which a large number of recycled resources will be physically deformed by water,resulting in the inability to stack and store,so the rainy weather in the south and other reasons for enterprises to use the existing circular silo for storage of such recycled resources.However,there is no lifting machinery device in the existing round silo,and the traditional stacking device has limited stacking height and large stacking gap,resulting in low space utilization,while the lifting spreader works with the tower inside the round silo will not only make up for the defects of the traditional method,but also improve the stacking efficiency,so the research work on the lifting machinery device inside the silo is carried out.This paper focuses on modeling,finite element analysis and structural optimization of the crane spreader and the tower boom inside the circular silo for waste paper block stacking.(1)By establishing a mechanical model,analyzing the clamping force required when the clamping mechanism clamps the stack,modeling the lifting fixture with Solidworks 3D software,conducting finite element analysis on the clamping mechanism and the load-bearing steel frame,and finding that there is more room for optimization of the structure according to the analysis,and making reasonable suggestions for the product design.(2)According to the requirements put forward by the enterprise,combined with the working environment,the flat-head tower crane is selected as the final solution.The jib is the main load-bearing structure of the tower crane.This topic focuses on the study of tower booms inside circular silos,using the knowledge of structure,theory and material mechanics to calculate the jib load,determine the cross-sectional size of each chord,and complete the preliminary design of the jib.(3)Using DM modeling platform to conceptually model the tower jib,through simulation analysis,verify the theoretical calculation results,and determine the strength and stiffness of the jib to meet the requirements,but there is more room for optimization;in order to ensure the stability of the stack,modal analysis of the jib structure,to provide appropriate recommendations for the actual work.(4)Considering that the excessive weight of the boom will reduce the working performance of the tower crane,the cross section of the tower crane boom chord is optimized by the Design Exploration module under the premise of meeting the requirements of the strength and stiffness of the boom.The final optimized boom weight is 174.8kg less than that before the optimization,which is 10.91%,achieving the purpose of reducing the dead weight of the tower boom and improving the material utilization and working performance.