摘要
针对马铃薯收获过程中土壤雍堵、损失率高、明薯率低等问题,通过建立马铃薯土壤离散元模型,重点研究了马铃薯-土壤在收获过程中运动规律,明确了马铃薯在收获过程中挖掘铲与马铃薯团聚体的动态关系,分析了挖掘铲在不同工作参数组合下对马铃薯团聚体碎裂规律。以前进速度、作业深度、入土角度为试验因素,以工作阻力和土壤破碎率为试验指标,进行试验分析设计,通过Design-Expert优化设计,得出挖掘铲最佳工作参数,即前进速度0.5m/s、作业深度170mm、入土角度45°时,工作阻力为1384.65N,土壤破碎率为95.77%,满足马铃薯的收获要求。
Aiming at the problems of soil yon blockage,high loss rate and low bright potato rate in potato harvesting process,by establishing potato soil discrete element model,we focus on potato-soil movement law in the harvesting process,clarify the dynamic relationship between excavation shovel and potato agglomerate in potato harvesting process,and analyze the law of potato agglomerate fragmentation by excavation shovel under different working parameter combinations.With forward speed,operating depth and soil entry angle as test factors,working resistance and soil fragmentation rate as test indexes,experimental analysis and design,through Design-Expert optimization design,the best working parameters of excavation shovel,forward speed 0.5m/s,operating depth 170mm,soil entry angle 45°,under the best working parameters,working resistance is 1384.65N,soil fragmentation rate is 95.77N.The soil crushing rate is 95.77%,which meets the potato harvesting requirements.
作者
孙宁
史先磊
陈艳
李金龙
杨刚
Sun Ning;Shi Xianlei;Chen Yan;Li Jinlong;Yang Gang(Mechanical and Electrical Engineering,Qingdao Agricultural University,Qingdao 266109,China;Qingdao Jimo District No.1 Vocational Secondary Professional School,Qingdao 266109,China)
出处
《农机化研究》
北大核心
2024年第11期29-34,44,共7页
Journal of Agricultural Mechanization Research
基金
山东省泰山产业领军人才工程项目(LJNY201804)。
