摘要
针对果园割草机工作时漏割率高、燃油污染大的问题,设计了一种适用于丘陵山地的履带式电动割草机。利用SOLIDWORKS、EDEM软件完成整机模型和杂草模型的构建,并通过单因素仿真试验研究了不同割刀类型下的割刀转速、割刀高度对漏割率的影响,结果表明漏割率随着割刀转速增加和割刀高度的减小而降低,在割刀转速500 r/min、割刀高度75 mm条件下不同割刀割草情况的对比后得出,一字割刀受力最小。在此基础上,进行三因素三水平的正交仿真设计,构建二阶多项式响应面模型,对割刀类型、割刀转速和割刀高度的交互作用进行显著性分析,确定最优参数组合为一字割刀,转速为1017.439 r/min,割刀高度为90.919 mm,根据优化参数进行仿真实验,得出漏割率的值为4.479,满足漏割率≤5%的要求,研究可为履带式电动割草机的结构设计及工作参数优化提供参考。
Aiming at the problems of high miss rate and large fuel pollution of orchard lawn mower,a crawler electric lawn mower suitable for hilly and mountainous areas is designed.SOLIDWORKS and EDEM software are used to complete the construction of the whole machine model and weed model,and the influence of the cutter speed and the cutter height on the miss rate under different cutter types is studied by single factor simulation experiment.The results show that the miss rate decreases with the increase of the cutter speed and the decrease of the cutter height.After comparing the different cutting conditions under the condition of the cutter speed of 500 r/min and the cutter height of 75 mm,the force of the single cutter is the smallest.On this basis,the orthogonal simulation design of three factors and three levels is carried out,and the second-order polynomial response surface model is constructed to analyze the interaction of the cutter type,the cutter speed and the cutter height.The optimal parameter combination is determined to be the single cutter,the speed is 1017.439 r/min,and the height is 90.919 mm.According to the optimized parameters,the simulation experiment is carried out,and the value of the miss rate is 4.479,which meets the requirement of the miss rate≤5%.This study can provide reference for the structure design and the optimization of the working parameters of the crawler electric lawn mower.
作者
嵇君霖
黄晓鹏
万芳新
牟晓斌
吴向峰
何存财
吴延勛
马国军
JI Jun-lin;HUANG Xiao-peng;WAN Fang-xin;MOU Xiao-bin;WU Xiang-feng;HE Cun-cai;WU Yan-xun;MA Guo-jun(College of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou Gansu 730070,China)
出处
《林业机械与木工设备》
2024年第8期42-50,共9页
Forestry Machinery & Woodworking Equipment
基金
甘肃省重点研发计划-丘陵山地电动智能割草机的研制(23YFNA0014)
