农机化研究2026，Vol.48Issue(6)：97-104,8.DOI:10.13427/j.issn.1003-188X.2026.06.013
基于离散元的植树挖穴机具钻头的仿真与优化
Simulation and Optimization of Tree Planting and Hole Digging Machine Drill Bit Based on Discrete Element Method
摘要
Abstract
In recent years,land desertification has become increasingly severe due to issues such as soil erosion and ex-cessive deforestation.Planting trees and afforestation is the most effective and fundamental way to solve land desertifica-tion.The drill bit is the core component of the tree planting machine.In order to improve the planting effect of the tree planting machine,a pit digging drill bit suitable for planting Xinjiang poplar trees was designed.By seeking its optimal working parameters,a better pit digging effect was achieved.Using soil samples from Xibulong Forest Farm as a reference,the relevant properties of the soil were determined.A discrete element model of the soil was established using discrete element analysis software,and the cutting processes of the soil with single and double helix drill bits were simula-ted.The simulation results showed that compared to traditional single threaded drill bits,the structure of double threaded drill bits was beneficial in reducing the resistance experienced by the drill bit when cutting soil.Based on the results of discrete element analysis,the structural and process parameters of the double helix drill bit were optimized through orthog-onal experiments.At the same feed depth,the maximum torque and output of the drill bit were related to the thread incli-nation angle,downward feed rate,and rotational speed of the drill bit.Taking the maximum amount of excavation and the minimum maximum torque as the optimization objectives,the optimal parameter combination was determined as the thread inclination angle of 45°,the feed speed of 85 mm/s and the speed of 215 r/min,and the excavation effect is the best un-der this parameter.关键词
植树挖穴机具钻头/土壤建模/离散元仿真/正交试验/多目标优化Key words
tree planting and hole digging machine drill bit/soil modeling/discrete element simulation/orthogonal test/multi objective optimization分类
农业科技引用本文复制引用
杨春梅,韦剑,孟繁伟,徐芹国,丁禹程..基于离散元的植树挖穴机具钻头的仿真与优化[J].农机化研究,2026,48(6):97-104,8.基金项目
2024年中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金项目(2024-2025) （2024-2025）
