油菜移栽机槽轮间歇式送苗机构的优化设计  

Optimal design of intermittent seedling feeding geneva mechanism for rape transplanter

作　　者：肖名涛[1,2] 孙松林[1,2] 李凯[1] 魏刚[1] 杨彪[1] 

机构地区：[1]湖南农业大学工学院,湖南长沙410128 [2]湖南省现代农业机械装备工程技术研究中心,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2014年第2期211-215,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家"十二.五"科技支撑计划项目(2011BAD20B083)

摘　　要：针对油菜移栽机设计了一套槽轮间歇式送苗机构。通过建立送苗机构的运动学与动力学模型,确定以送苗机构驱动扭矩最小为优化目标,以落苗时间与槽轮间歇停顿时间关系、链接数目与苗杯数量关系为约束条件,通过Matlab数值分析,得出满足约束条件的较优方案,即二指六槽式槽轮间歇机构驱动扭矩为87.2 N·m,间歇停顿时间为0.4 s。试验表明,优化后的机构运动流畅,送苗准确率可达92.9%。An intermittent seedling feeding geneva mechanism for rape transplanter was designed. By analyzing the molds of kinematics and dynamics of the seedling feeding mechanism, the minimum drive torque was determined as the optimization goal. The relationships between seedling drop time and geneva pause time and between link number and seedling cup were set as constraints. A two slot and six round pin geneva mechanism with drive torque equal to 87.2 N·m and pause time equal to 0.4 s was found to be the optimal scheme satisfying the constraints by Matlab software analyzing. The test results shows the optimized mechanism runs smoothly and the seedling feeding accuracy rate reached up to 92.9%.

关 键 词：油菜移栽机 槽轮送苗机构 优化设计 

分 类 号：S223.9[农业科学—农业机械化工程]