果树苗木栽植机机架有限元分析

Finite Element Analysis of Seedling Transplanting Machine Frame

根据现代果树苗木大面积密植栽植的农艺需求,设计了一种苗木栽植机。机架承载着栽植机其他重要部件,其结构的稳定性和品质的好坏直接影响到栽植机的使用寿命,非常有必要对机架进行有限元分析,对整机设计和生产有很重要的作用。利用AIP软件建立了栽植机机架的三维模型和组合装配,并根据果树苗木栽植作业的实际工况定义其受力载荷和约束条件,结合机架装置的材料属性进行有限元分析。通过计算和分析,得出机架在工作过程中的应力分布和应变分布找出相应易损部位。对变形大、应力集中的易损部位进行优化改进,最终确定机架的几何参数。通过试验其设计满足农艺要求。

According to the modern agronomic requirement of planting fruit trees in a large area, a seedling planting machine was designed. The frame carries the other important parts of the plant, its structure stability and quality directly affect the life of the planting machine, it is necessary to carry out finite element analysis of the machine, the machine design and production is very important effect. In this paper, three-dimensional model and assembly of planting machine frame are established by using AlP software. The force load and constraint condition are defined according to the actual working condition of fruit tree seedling planting operation, and finite element analysis is carried out according to tile material property of rack device. Through calculation and analysis, the stress distribution and strain distribution of the rack during working process are obtained to find the corresponding vulnerable parts. The deformation of large, stress concentration of vulnerable parts to optimize the improvement. The geometrical parameters of the rack are finally determined. The design meets the agronomic requirements by testing.