双辊式花生种子分级机构设计与优化  

Design and optimization of two-roller peanut seed classification mechanism

作　　者：聂庆亮 郝建军[1] 龙思放 宋亚辉[2] 张贺斌 韩鹏 马志凯[1] 赵建国[1] NIE Qingliang;HAO Jianjun;LONG Sifang;SONG Yahui;ZHANG Hebin;HAN Peng;MA Zhikai;ZHAO Jianguo(School of Mechanical and Electrical Engineering,Hebei Agricultural University,Baoding 071000,China;Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050035,China;Hebei Agricultural Technology Extension Station,Shijiazhuang 050000,China)

机构地区：[1]河北农业大学机电工程学院,河北保定071001 [2]河北省农林科学院粮油作物研究所,河北石家庄050035 [3]河北省农业技术推广总站,河北石家庄050035

出　　处：《河北农业大学学报》2020年第1期116-121,共6页Journal of Hebei Agricultural University

基　　金：河北省现代农业产业技术体系油料产业创新团队建设项目(HBCT2018090206);河北省重点研发计划项目(1922418D).

摘　　要：针对花生小区播种常见花生种子分级机具分级精度低的问题,设计了1种双辊式花生种子分级机构,并对其关键部件进行了优化选型;利用EDEM软件对花生种子分级进行仿真分析,确定了螺旋转辊轴段长度、螺旋转辊转速和喂入速率是影响分级精度的主要因素;设计了三因素Box-Behnken试验,利用Design-Expert软件对试验结果进行方差分析,建立了显著参数的回归模型,获得了双辊式花生种子分级机构的最优组合参数:螺旋转辊轴段长度为171.9 mm,螺旋转辊转速为149.52 r/min,喂入速率为5.82粒/s。试验表明,在该组合参数下花生种子的分级精确率可达93.69%。研究结果可为双辊式小区花生种子分级机具的设计与改进提供理论基础。Aiming at the low classification accuracy of common peanut seed grading machines in peanut plots,a tworoller peanut seed grading mechanism was designed and its key components were optimally selected.The EDEM software was used to simulate the peanut seed grading.It was determined that the length of the spiral roller,the rotation speed of the spiral roller and the feeding rate of peanut seeds were the main factors affecting the classification accuracy of peanut seeds.A three-factor Box-Behnken test was designed,and the design results were analyzed by variance analysis using Design-Expert software.Finally,a regression model for significant parameters was established.The optimal combination parameters of the peanut seed grading system are as follows:the length of the spiral roller shaft is 171.9 mm,the rotation speed of the spiral roller is 149.52 r/min,and the feeding rate of the peanut seed is 5.82 per second.The test results showed that the classification accuracy of peanut seeds could reach 93.69%,and the research achievement can provide a theoretical basis for the design and improvement of the two-roller peanut seed classification machine.

关 键 词：双辊式 花生种子分级 小区 结构设计 EDEM仿真 参数优化 

分 类 号：S224.4[农业科学—农业机械化工程] S661.1[农业科学—农业工程]