烟草科技2026，Vol.59Issue(5)：105-112,8.DOI:10.16135/j.issn1002-0861.2025.0295
烟秆拔秆机中反旋式刀辊的模态分析与离散元仿真
Modal analysis and discrete element simulation of a counter-rotating knife roller for tobacco stalk extraction
摘要
Abstract
To explore the mechanical performance of the counter-rotating knife roller(a key component of tobacco stalk extractors and hereinafter referred to as the knife roller)in a new type of tobacco stalk extractor,and to ensure its safe and stable operation,the dynamic stability of the knife roller was verified through Ansys modal analysis and EDEM discrete element simulation.The results showed that the natural frequency distribution of the first six order vibration model of the knife roller for stalk extraction was within 234-311 Hz,with a difference rate of 97.5%-98.2%from the actual operating frequency of 5.67 Hz,which was higher than the safety threshold of 15%,indicating effective avoidance of resonance risks.By establishing a Hertz-Mindlin bonding contact model to quantify the interactions between the knife roller and soil,an average soil cutting resistance of 1 187 N(peak value 2 124 N),an average torque of 247 N·m(peak value 514 N·m)and an average power dissipation of 3.9 kW(peak value 10.3 kW)were obtained.The difference between field trial data and simulation data was less than 10%,indicating the effectiveness of the simulation model.This study provides theoretical reference for promoting the safety and stability of tobacco stalk extractors.关键词
烟草/拔秆刀辊/模态分析/离散元仿真/功耗Key words
Tobacco/Knife roller for stalk extraction/Modal analysis/Discrete element simulation/Power dissipation分类
农业科技引用本文复制引用
李连豪,韩硕,麻国震,刘园,朱晨辉,黄会男,刘炳旭,赵大勇,索晨..烟秆拔秆机中反旋式刀辊的模态分析与离散元仿真[J].烟草科技,2026,59(5):105-112,8.基金项目
河南省烟草公司南阳市公司科技创新项目"背负式烟秆拔除收集一体化作业机研制与应用"(2022411300200078) （2022411300200078）
河南省科技攻关项目"智能花生挖掘翻秧晾晒机关键技术与装备研发"(232102110302). （232102110302）
