农业机械学报2026，Vol.57Issue(16)：51-62,12.DOI:10.6041/j.issn.1000-1298.2026.16.005
非圆齿轮-连杆一体式水稻钵苗膜上移栽机构动力学优化与试验
Dynamic Analysis Optimization and Test of Integrated Non-circular Gear-linkage Rice Pot Seedling Transplanting Mechanism for Film-mulched Paddy Fields
摘要
Abstract
Aiming at the problem of overall mass increase,centroid offset and driving torque mutation caused by the four-bar mechanism of the non-circular gear-connecting rod integrated planetary gear train transplanting mechanism on the film of rice pot seedling,the dynamic modeling analysis and optimization design of the integrated non-circular gear planetary gear train mechanism was studied based on the second Lagrange equation.Firstly,the dynamic research system of the combined gear train mechanism was defined,and the establishment of its independent motion freedom and the selection of the generalized coordinates of the planet carrier rotation angle were completed.Through the calculation of the total kinetic energy and total potential energy of the system,the Lagrange function and the rigid body dynamics equation of the mechanism were realized.Then,the extreme value characteristics and mutation rules of the driving torque were analyzed by numerical solution,and the significant influence of the combined four-bar on the dynamic performance and the fatigue risk of the embedded structure were clarified.Aiming at the coupling contradiction between the center of mass offset and the increase of the moment of inertia of the mechanism,the Matlab dynamics optimization module was developed based on the theoretical model.Taking the maximum driving torque and the moment of inertia of the system as the evaluation indexes,the counterweight strategy of the reverse arrangement of the transplanting arm components was proposed to realize the multi-objective optimization of the counterweight parameters.The optimization results showed that when the counterweight mass was 0.133 67 kg,the maximum driving torque of the mechanism was reduced to 623.030 4 N·mm,and the optimization ratio was 17.252％.The arrangement of the center of mass near the center of rotation was realized and the negative effect of the increase of the moment of inertia was effectively suppressed.Finally,the accuracy of the physical verification model was carried out through the dynamic test bench,and the maximum and minimum driving torques of the measured mechanism were optimized by 13.38％and 10.68％respectively by optimizing the selection of 0.1 kg counterweight test.The overall fluctuation of the driving torque was significantly reduced,which effectively alleviated the problem of dynamic performance degradation and improved the stability and reliability of the mechanism operation.关键词
水稻钵苗膜上移栽/非圆齿轮-连杆式行星轮系/动力学分析/配重优化Key words
rice pot seedling transplanting on film/non-circular gear-linkage planetary gear train/dynamic analysis/counterweight optimization分类
农业科技引用本文复制引用
辛亮,王航,王克震,盛添博,王馨婕,邢世坤..非圆齿轮-连杆一体式水稻钵苗膜上移栽机构动力学优化与试验[J].农业机械学报,2026,57(16):51-62,12.基金项目
黑龙江省自然科学基金优秀青年项目(YQ2023E001) （YQ2023E001）
