Research On Body Structure Topology Optimization Of Back-Loading Compression Refuse Collector

Abstract:Back-loading compression refuse collector plays a more and more important role in today’s sanitation engineering. For the back-loading compression refuse collector, through corresponding mechanism, the body structure can accomplish a series of actions which contain garbage collection and compression and unloading, the quality of the body structure design is directly related to the service performance and service life of back-loading compression refuse collector. In this paper, taking the body structure of ZYS5160back-loading compression refuse collector as a research model, the topological optimization and redesign were carried out on it, significant practice value and guidance significance are obtained in this present thesis. The main works are stated as follows:Firstly, based on the analysis of each part of the body structure and loads, the mechanical model of each part was established, and then using the methods of differential and limit to calculate the rubbish load density distribution function.Secondly, the establishments of three-dimensional solid model were made on each part of the body structure, and using ANSYS to make a series of simulation analysis on the body structure model in dangerous working conditions, through the contrast analysis to determine the most dangerous working condition of each part, the finite element models for topology optimization of each part were established and a series of topology optimization calculation on each part of the body structure were made.Thirdly, compared with the original body structure, the maximum complex stress (SMX) and the maximum deformation (DMX) of the redesigned garbage trunk were reduced by22%and41.5%, the quality was reduced by9.4%, the capacity was increased by5.5%, the maximum complex stress (SMX) and the maximum deformation (DMX) of the redesigned push shovel were reduced by6.2%and18%, the quality was reduced by4%, the maximum complex stress (SMX) and the maximum deformation (DMX) of the redesigned precompressor were reduced by11.1%and5.7%, the quality was reduced by4.2%. With the comparison and analysis of the performance from structural strength, stiffness, stability and economy of the new and old body r structure’s aspects, get a conclusion that the redesigned body structure is better than the old, and the body structure optimization met the topology optimization which took the minimum flexibility as objective function.Finally, taking the trunk of ZYS5160back-loading compression refuse collector as an experimental prototype and made the stress tests for each part in their most dangerous conditions, the body structure analysis model is reliably verified by comparing the experimental data and the simulation data.