摘要
针对目前预切种式宽窄行甘蔗种植机排种系统存在排种不均、合格率低、漏种率高、耗种多、卡种堵塞严重等问题,通过ADAMS进行仿真虚拟试验分析及试验研究,设计了一种由转向导流有序集蔗机构和单辊排种器构成的甘蔗预切种排种系统。通过自行搭建的试验平台,研究了转向导流有序集蔗机构和单辊排种器的集蔗箱弹性控流板结构形式、侧板夹角及排种辊转速等参数对排种性能的影响。研究结果表明:自动转向导流有序集蔗合格率为95.1%;单辊排种器的集蔗箱弹性控流板结构对排种合格率具有极显著影响,侧板夹角和排种辊转速对排种合格率具有显著影响;单辊排种器优化参数组合为:两段圆弧式集蔗箱弹性控流板结构、集蔗箱两侧板夹角为105°、排种辊转速为6 r/min(理论排种速度:0.83 s/根)。最后进行了优化组合参数的验证试验,结果表明:排种平均合格率为91.0%、平均漏种率为4.5%、平均堵塞率为0.5%,排种均匀性显著提高。
Aimed at problems that currently nonuniform seed sowing,low pass rate,high seed missing rate,great seed wasting and severe seed blocking existed in the seed-sowing system of pre-seed-cutting sugarcane planters with wide and narrow row spacing, virtual experiment analysis and practical experiment research were conducted through ADAMS. A kind of pre-seed-cutting seed-sowing systems with a single roll bottom sowing edge were designed and developed. The effects of the parameters as the rotation velocity of seed-sowing roll,lateral plate angle,flow-controlling plate elastic structure of the sugarcane-gathering box of the seed-sowing device and ordered rotating sugarcane gathering on seed sowing properties were studied through the test platform. The following results were turned out according to experiment results: the qualified rate of automatic rotating ordered flow guiding sugarcane gathering was95. 1%,the flow-controlling plate elastic structure of the sugarcane-gathering box of the seed-sowing device had significant effects on pass rate of seed sowing,the lateral plate angle and the rotation velocity of seed-sowing rolls had generally significant effects. Optimized parameters of the seed-sowing device were as follows: using the flow-controlling plate elastic structure,the lateral plate angle of the sugarcanegathering box was 105°,the rotation velocity of seed-sowing rolls was 6 r/min( the theoretical seed sowing velocity was 0. 83 s/stick). Finally, these optimized parameters were validated through experiments,which showed as follows: the average qualified seed sowing rate was 91. 0%( the average seed sowing space was 0. 917 s). The average seed missing rate was 4. 5%. The average seed blocking rate was 0. 5%. The seed sowing uniformity was improved significantly. What mentioned above laid the theoretical research foundation of deeply further development of pre-seed-cutting sugarcane planters.
作者
李尚平
黄宗晓
张伟
向锐
王梦萍
莫瀚宁
LI Shangping;HUANG Zongxiao;ZHANG Wei;XIANG Rui;WANG Mengping;MO Hanning(College of Mechanical Engineering,Guangxi University,Nanning 530004,China;College of Information Science and Engineering,Guangxi University for Nationalities,Nanning 530006,China)
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2020年第4期113-121,共9页
Transactions of the Chinese Society for Agricultural Machinery
基金
广西科技重点研发计划项目(桂科AB16380199)。
关键词
甘蔗种植机
单辊排种系统
预切种
sugarcane planter
single-rolled seed-sowing systems
pre-seed-cutting
