农机化研究2024，Vol.46Issue(7)：44-49,6.
自走式联合收割机侧翻动力学建模与分析
Modeling and Analysis of Self-propelled Combine Harvester Rollover Dynamics
摘要
Abstract
The self-propelled combine harvester will roll over during field operation and short-distance cross-area driv-ing,which is an important factor affecting the field operation efficiency and field safety.To address the above problems,this study comprehensively analyzes the rear wheel steering,front wheel braking,wheel sideslip and tire lateral deflection of the self-propelled combine harvester,establishes a non-stationary lateral multi-degree-of-freedom(multi-DOF)ki-nematic model,and obtains the lateral deflection angle of the tire,the kinematic parameters of the center of mass of the combine harvester,the rear wheel steering angle and the mathematical relationship between the vehicle speed,the lateral load transfer ratio(LTR)model of combine harvester is established,the critical state of harvester rollover is evaluated,the influence of structural geometry,steering angle and braking torque on the LTR of combine harvester is revealed,the rear wheel steering angle and front wheel braking torque are used as model inputs,the rollover mechanism is established and the safety interval of parameters is obtained through numerical calculation.The research results provide theoretical ref-erence and technical support for the dynamic design,control and rollover protection of combine harvester.关键词
自走式/联合收获机/田间侧翻/模型分析Key words
self-propelled/combine harvester/field rollover/model analysis分类
农业科技引用本文复制引用
王敏,颜丛银,于孔学..自走式联合收割机侧翻动力学建模与分析[J].农机化研究,2024,46(7):44-49,6.基金项目
汽车服务工程河南省级品牌专业基金项目([2019]527-19) （[2019]527-19）
河南省高等教育学会高等教育研究项目(2021SXHLX182) （2021SXHLX182）
