甘蔗种植机施肥凸轮间歇机构仿真与试验研究  

Simulation and Experimental Study on Fertilizer Cam Intermittent Mechanism of Sugarcane Planter

作　　者：麻芳兰[1] 邓樟林 李科 罗晓虎 梁叶杭 李尚平[1,2] Ma Fanglan;Deng Zhanglin;Li Ke;Luo Xiaohu;Liang Yehang;Li Shangping(College of Mechanical Engineering,Guangxi University,Nanning 530004,China;College of Information Science and Engineering,Guangxi University for Nationalities,Nanning 530006,China)

机构地区：[1]广西大学机械工程学院,南宁530004 [2]广西民族大学信息科学与工程学院,南宁530006

出　　处：《农机化研究》2022年第6期118-125,共8页Journal of Agricultural Mechanization Research

基　　金：广西科技开发重点项目(桂科AB18281016);亚热带农业生物资源保护与利用国家重点实验室开放项目(SKLCUSA-b201706)。

摘　　要：针对横向甘蔗种植机施肥器施肥间距不规律、易烧芽等问题,在甘蔗横向种植机施肥器基础上设计了凸轮间歇机构,作用于施肥器施肥口,使施肥口呈周期性开关、规律性施肥。首先,取凸轮轴转速、凸轮近休止角及机车行进速度3个因素对施肥间距与周期纵向总长进行3元回归正交旋转组合仿真试验;其次,通过二次回归方程优化目标参数,获得最优参数组合为凸轮轴转速137.025r/min(取137r/min)、机车行走速度0.8m/s、凸轮近休止角38.08°(取38°),进行仿真验证试验,得到平均施肥间距为119.6mm,周期纵向总长为354.3mm。进行台架验证试验,结果表明:施肥间距平均值114.8mm,周期纵向总长的平均值344.3mm,可知EDEM仿真验证试验与台架试验结果相差不大。田间验证试验表明:施肥间距基本在100~150mm内,周期纵向总长基本在300~400mm内,满足当地农艺要求,施肥效果达到预期目标。In order to solve the transverse sugarcane planter fertilizer fertilization irregular space,andfertilizer applicators burn buds easily,based on the small opening screw fertilizer applicator of the sugarcane horizontal planter,acam intermittent mechanism is designed in this paper,which acts on the fertilization mouth of the fertilizer dispenser,making the fertilization mouth turn on and off periodically and fertilizing regularly.In order to study the fertilization interval and the total longitudinal length of the period,the three factors of camshaft speed,cam angle of repose,and locomotive travel speed were selected to perform a three-dimensional regression orthogonal rotation combined simulation experiment.The obtained quadratic regression equation was used to optimize the target parameters,when the camshaft speed was 137.025r/min(take 137r/min),the locomotive walking speed was 0.8m/s,and the cam near resting angle was 38.08°(take 38°),the simulation test are carried out,the fertilization interval was 119.6mm,and the longitudinal length of the cycle was 354.3mm.The bench verification test is carried out again,the results show that the average fertilization interval is 114.8mm,and the average longitudinal length of the cycle is 344.3mm,it can be seen that the results of the EDEM simulation verification test and the bench test are not much different.Finally,a field verification experiment was carried out,the fertilization interval was basically within 100-150mm,and the total longitudinal length of the cycle was basically within 300-400mm,which met the local agronomic requirements,and the fertilization effect reached the expected goal.

关 键 词：甘蔗横向种植机 施肥机构 离散元分析 凸轮间歇机构 

分 类 号：S223.24[农业科学—农业机械化工程]