中南大学学报（自然科学版）Issue(2)：443-449,7.DOI:10.11817/j.issn.1672-7207.2016.02.013
曲柄摇杆行星系取苗机构参数匹配与优化
Parameters matching and optimization of seedling pick-up mechanism with crank-rocker planetary gear train
摘要
Abstract
In order to fulfill the agronomic demand of rice planting,the transplanting arms with grippers were applied to the planetary rotation mechanism of high-speed rice transplanter, and a new seedling pick-up mechanism with crank-rocker planetary gear train was designed. The structural features and working principle of seedling pick-up mechanism with crank-rocker planetary gear train was discussed, and the mathematical model of the seedling pick-up mechanism was established. The static trajectory of seedling pick-up mechanism was analyzed and optimized through MATLAB programming, four main parameters influencing the trajectory characteristics of seedling pick-up arms were optimized by choosing different numbers, and a series of optimal structural parameters fulfilling the agronomic demand of rice planting were obtained. The initial position angle of seedling pick-up mechanism (a5) was−6.05e−2(°), the radius of the planet wheel (R) was 78 mm, the length of seedling pick-up arms (lc) was 112.51mm, and the initial position angle of seedling pick-up arms (a6) was 22.73e−2(°). The virtual model of the proposed seedling pick-up mechanism was built with the optimization result, The theoretical analysis was verified by RecurDyn dynamic simulation and prototype test. The results show that the kinematical properties of the seedling pick-up mechanism are better.关键词
高速插秧机/参数匹配/取苗机构/轨迹优化Key words
high-speed transplanter/parameter matching/seedling pick-up mechanism/trajectory optimization分类
农业科技引用本文复制引用
尚涛,袁瑞强,田聪,王昕..曲柄摇杆行星系取苗机构参数匹配与优化[J].中南大学学报（自然科学版）,2016,(2):443-449,7.基金项目
国家高技术研究发展计划(863计划)项目(2013AA063903)(Project (2013AA063903) supported by the National High-tech R&D Program of China (863 Program)) （863计划）
