油莎豆机械收获除杂系统优化设计  

Optimal Design of Mechanical Harvesting and Separation System for Tiger Nut

作　　者：赵英琦 李兵杰 孟靓 王龙 毕涛 简建明[1] 侯书林[1] Zhao Yingqi;Li Bingjie;Meng Liang;Wang Long;Bi Tao;Jian Jianming;Hou Shulin(College of Engineering, China Agricultural University, Beijing 100083, China;College of Mechanical and Electronic Engineering, Tarim University, Alar 843300, China;Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alar 843300, China)

机构地区：[1]中国农业大学工学院,北京100083 [2]塔里木大学机械电气化工程学院,新疆阿拉尔843300 [3]新疆维吾尔自治区普通高等学校现代农业工程重点实验室,新疆阿拉尔843300

出　　处：《农机化研究》2022年第8期51-56,共6页Journal of Agricultural Mechanization Research

基　　金：中农-塔大联合基金项目(ZNLH201901);塔里木大学现代农业工程重点实验室开放项目(TDNG2020104);兵团重点研发计划项目(2019AB007)。

摘　　要：油莎豆因其营养丰富成为一种新兴多用途经济作物,但收获困难严重制约了油莎豆大面积种植及相关产业的发展。为此,结合国内外油莎豆收获机械特点,设计了一种油莎豆收获除杂系统,包括偏心驱动振动筛和八棱柱滚筒。阐述了该系统的结构组成和工作原理,通过理论分析确定了滚筒理论转速要求;通过有限元分析得到了偏心驱动臂的最大应力为168.55MPa,滚筒装置前6阶最小固有频率为48.598Hz。试验结果表明:当滚筒筛安装倾角为6°、工作转速为35r/min时,除杂效率为84.05%,除杂效果较好。Tiger Nut has become a new and multi-purpose economic crop due to its rich nutrition,but the difficulty of harvesting has severely restricted the large-scale cultivation of Tiger Nut and the development of related industries.In this paper,combined with the characteristics of domestic and foreign Tiger Nut harvesting machinery,a system for harvesting and impurity removal of Tiger Nut is designed,which includes an eccentric drive vibrating screen and an octagonal prism drum.The structural composition and working principle of the device are described,and the theoretical analysis of the drum speed is determined;Through finite element analysis,the maximum stress of the eccentric drive arm is 168.55 MPa,and the minimum natural frequency of the fore six-order of the drum device is 48.598Hz.Through the test,it is obtained:when the drum screen is installed at an inclination angle of 6°and the working speed is 35r/min,the impurity removal efficiency is 84.05%,and the impurity removal effect is better.

关 键 词：油莎豆 除杂系统 偏心驱动振动筛 八棱柱滚筒 有限元分析 

分 类 号：S225.73[农业科学—农业机械化工程]