组合式排种器的设计与试验  

Design and experiment of combined seed metering device

作　　者：李娟娟 张和平 胡斌[1] 毕新胜[1] 张桐宇浩 李姝卓 LI Juanjuan;ZHANG Heping;HU Bin;BI Xinsheng;ZHANG Tongyuhao;LI Shuzhuo(College of Mechanical Electrical Engineering,Shihezi University,Shihezi,Xinjiang 832000,China;Xinjiang Kenong Machinery Manufacturing Co.,Ltd.,Karamay,Xinjiang 834000,China)

机构地区：[1]石河子大学机械电气工程学院,新疆石河子832000 [2]新疆科农机械制造有限责任公司,新疆克拉玛依834000

出　　处：《江苏大学学报（自然科学版）》2020年第5期551-556,608,共7页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51665050)。

摘　　要：针对传统机械式排种器工作时取种部件难以更换等问题,通过理论分析法确定排种器关键部件的结构参数,设计一种组合式的排种器.采用EDEM离散元软件,完成以排种器转速、型孔直径、型孔深度为影响因子的通用正交旋转组合试验,运用Design Expert 8.0.6软件对试验数据进行分析,得到各影响因子与排种性能指标之间的回归模型,同时基于回归模型进行目标参数优化,确定最佳组合参数.结果表明:当排种轮转速为40.38 r·min^-1,型孔直径为9.94 mm,型孔深度为8.47 mm时,预测合格率为96.24%,在此基础上进行排种器台架试验,验证了仿真结果的准确性.To solve the problem that the traditional mechanical seed metering device was difficult to replace during working,the structural parameters of the key components of the seed metering device were determined by theoretical analysis method to design a combined seed metering device.EDEM discrete element software was used to complete the universal orthogonal rotation combination test with the rotation speed of seed metering,the diameter of hole and the depth of hole as influence factors.The design data were analyzed by Design Expert 8.0.6 software,and the influence factors were obtained.The regression model among the performance indicators was ranked,and the target parameters were optimized based on the regression model to determine the optimal combination parameters.The results show that when the rotation speed of the seeding wheel is 40.38 r·min^-1 with the hole diameter of 9.94 mm and the hole depth of 8.47 mm,the predicted yield is 96.24%.Based on the results,the bench test can be carried out and can verify the simulation results.

关 键 词：排种器 棉花 回归分析 响应曲面 组合夹圈 

分 类 号：S223.2[农业科学—农业机械化工程]