Finite Element Analysis and Structural Improvements for the Ditching Equipment of Planting Fruit Tree Saplings

He Jianhua;Yang Xin;Li Jianping;Liu Junfeng;College of Mechanical and Electrical Engineering,Agricultural University of Hebei;

fruit tree saplings;;planting machinery;;ditching equipment;;finite element analysis;;structural improvements

According to the modern agronomic requirements of planting large area fruit tree saplings,a kind of planting ditching machine was designed. In the initial field experiments of prototype,the large deformation was occurred on the gutter-holding plate of ditching equipment side. In order to enhance the structural strength of ditching equipment and avoid the work resistance excessively increased,using finite element method to analyze the structure of ditching equipment. The three-dimensional assemblies model of ditching equipment was built by AIP software,the constraint conditions,loading forces,and materials of ditching equipment were defined for the ditching equipment FEM model based on the real work environments of planting fruit tree saplings. the more groups of data were calculated such as stress,deformation,and safety factors,through transforming the model dimensions of the ditching equipment by the parameter-driven mechanism,and according to the results to improve structure and parameters,the modified ditching equipment was tested,the results show that there was no deformation phenomenon on the ditching equipment,the working units can be operated in good condition,and reach agronomic requirements of planting fruit tree saplings.