振动铲式马铃薯收获机的设计与仿真分析

Design and Simulation Analysis of Vibrating Shovel Potato Harvester

马铃薯作为世界主要的经济作物之一,其种植规模不断扩大。为此,针对小规模种植地区的种植情况,设计了振动铲式马铃薯收获机,动力来源为8.8~11k W小四轮拖拉机。同时,运用Solid Works构建各结构及整机的三维模型,并借助ADAMS仿真软件对振动铲进行动力学和振动仿真分析。结果显示:仿真后的位移、速度及加速度曲线随着时间的变化都保持平稳,其加速度数值在-2.7~1.7mm/s2范围内;仿真后的振动频率处于1 4~2 4 Hz范围内,与土壤的固有频率1 4 HZ很接近,说明该振动频率能够实现挖掘铲的最佳挖掘效果。

Potatoes,one of the world＇s major cash crops,are growing.In this paper,a vibrating shovel potato harvester is designed for the cultivation of small-scale planting areas.The power source is a small four-wheel tractor with 8.8-11 k W.Three-dimensional model of each structure and whole machine is constructed by Solid Works.With ADAMS The simulation results show that the displacement,velocity and acceleration curves of the vibration are stable with time,and the acceleration value is in the range of-2.7-1.7 mm/s2; The vibration frequency after simulation is in the range of 14-24 Hz,which is close to the natural frequency of the soil 14 Hz,indicating that the vibration frequency can meet the best excavation effect of the excavation shovel.