摘要
针对现有烟草打顶装置大多是以自走式作业平台为载体,而以无人机为作业平台的烟草打顶装置研究较为缺失的现状,基于无人机载荷平台设计了一种主要由菱形收放装置和打顶锯片组合的烟草打顶试验台。为验证菱形收放机构的工作性能与受力情况,对其结构尺寸进行了分析,采用ADAMS仿真软件对各关键运动构件进行动力学仿真试验与分析,得出各关键节点处受力值,验证了其结构设计的可行性;为表达锯片切割力学特性和检验其自身固有模态特征,利用图解解析方法和ANSYS Workbench有限元分析软件对其进行了剪切力学解析和模态分析,得出锯齿切断烟顶植株剪切力和锯片自身固有频率能够满足实际打顶作业要求。以无人机飞行速度为0.8 m/s、烟草打顶锯片转速为1500 r/min进行打顶试验,结果表明:打顶率在98.3%以上、烟草茎秆切割面平整度在97.2%以上、烟叶损伤率在3.2%以下,打顶性能良好,可满足实际生产需求。该装置可为后续基于无人机的烟草打顶装置关键技术研究提供参考。
In view of the fact that most existing tobacco topping devices are researched using self-propelled work platforms,and there is a lack of research on tobacco topping devices using drones as work platforms,a tobacco topping test bench was designed based on UAV,which mainly consists of a diamond shaped retraction device and a topping saw blade combination structure.To verify the working performance and force situation of the diamond shaped retractable mechanism,the structural design dimensions were designed and analyzed.Dynamic simulation experiments and analysis were conducted on each key motion construction using ADAMS simulation software,and the force values at each key node were obtained to verify the feasibility of its structural design.In order to express the mechanical characteristics of saw blade cutting and verify its inherent modal features,the shear mechanics analysis and modal analysis were carried out using graphical analysis methods and ANSYS Workbench finite element analysis software.The shear force and inherent frequency of the saw blade cutting tobacco top plants were obtained,which can meet the requirements of actual topping operations.The topping test was conducted at drone flight speed of 0.8 m/s and tobacco topping saw blade speed of 1,500 r/min.The results showed that the topping rate was above 98.3%,the flatness of the tobacco stem cutting surface was above 97.2%,and the tobacco leaf damage rate was below 3.2%.The topping performance was good and could meet the actual production needs.The device can provide technical reference for in-depth research on key technologies of tobacco topping devices based on UAV in the future.
作者
李连豪
李佳颖
孙文喜
孙千涛
秦伟桦
麻国震
雷然
秦欢
Li Lianhao;Li Jiaying;Sun Wenxi;Sun Qiantao;Qin Weihua;Ma Guozhen;Lei Ran;Qin Huan(College of Mechanical and Electrical Engineering,Henan Agricultural University,Zhengzhou 450002,China;Changyuan Branch of Henan Academy of Agricultural Sciences,Changyuan 453400,China;Henan Tobacco Company Sanmenxia City Company,Sanmenxia 470002,China)
出处
《农机化研究》
北大核心
2026年第7期41-47,共7页
Journal of Agricultural Mechanization Research
基金
河南省重点研发专项(231111112800)
河南省科技攻关项目(232102110302)。
关键词
烟草
无人机平台
收放装置
锯片式打顶装置
tobacco
UAV platform
retractable device
saw blade type topping device
