夹紧式番茄移栽机取苗机构的设计与试验  

Design and Experiment of Clamping Picking Seedling Mechanism for Tomato Transplanter

作　　者：张开兴[1,2] 吴昊 王文中 宋超 刘贤喜 Zhang Kaixing;Wu Hao;Wang Wenzhong;Song Chao;Liu Xianxi(College of Mechanical and Electrical Engineering,Shandong Agricultural University,Tai'an 271018,China;Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence,Tai'an 271018,China)

机构地区：[1]山东农业大学机械与电子工程学院,山东泰安271018 [2]山东省农业装备智能化工程实验室,山东泰安271018

出　　处：《农机化研究》2020年第12期64-68,共5页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2017YFD0700102)。

摘　　要：针对目前番茄移栽机取苗机构存在自动化水平低、伤苗、漏苗的问题,设计了一种弹性指针夹紧式取苗机构。通过分析苗基质在取苗过程中的受力状况,对弹性取苗针夹持角度、相对距离等相关几何参数进行计算,完成取苗机构本体设计。基于ADAMS运动仿真验证了该取苗机构设计和参数选择的合理性,根据仿真结果对无杆气缸的行程与速度进行了优化,并依据设计方案试制样机并进行取苗试验。结果表明:取苗投苗时间控制在1.3s、弹性取苗针与竖直方向夹角选取8°时,伤苗率、漏苗率和苗基质破坏均都得到了有效的控制,综合取苗成功率达到97.5%。In view of the seedling transplanting mechanism for tomato,there are some significant problems such as low level of automation、injury and seedling leakage during the seedling picking process.In this paper,the seedling claws and the wide plate of the clamping mechanism were studied.The stress state of the seedling substrate in the process of seedling picking was analyzed.The rationality of the design and parameter optimization of the seedling picking mechanism was verified with ADAMS.According to the simulation results,the stroke and speed of the control cylinder were tested.The results showed that:the seedling picking time was controlled at 1.3 s,and the angle between the seedling claw and the vertical direction is 8°.The damage rate,leakage rate and matrix destruction rate were effectively controlled.and the comprehensive seedling picking success rate reached 97.5%.

关 键 词：移栽机 番茄 取苗机构 夹紧式取苗爪 ADAMS仿真 

分 类 号：S223.94[农业科学—农业机械化工程]