摘要
针对收获机对行收获萝卜时对行精准度问题,以萝卜作为研究对象,基于四连杆机构原理,设计了自动对行装置。在横向位置探测上,将萝卜在垄中间位置的偏移量转换为探测杆角度偏移量,得到萝卜横向偏移距离。在纵向位置探测上以垄面为基准,设计了垄面浮动探测机构获取垄面起伏情况,结合角度传感器调节挖掘铲深度。利用SolidWorks和RecurDyn对横向探测杆和垄面浮动探测机构进行有限元静力学分析和动力学仿真。结果表明,横向探测杆和垄面浮动探测机构在静力学上符合强度和刚度要求,垄面浮动探测机构有良好贴垄仿形效果,挖掘铲的平均挖掘深度保持在20.5 mm内。该研究对萝卜收获过程中萝卜顺利导入收获装置具有参考意义。
In order to solve the problem of the accuracy of the row alignment when harvesting radish in the harvester,this paper takes the radish as the research object and designs an automatic row alignment device based on the principle of four-link mechanism.In the lateral detection,the offset of radish on the ridge was converted into the angle offset of the connecting rod to calculate the lateral offset distance of radish.In the longitudinal detection,a ground floating detection mechanism was designed to obtain the undulation of ridge surface which the ridge surface was used as the criterion.Be combining with the angle sensor,the digging depth of the shovel could be adjusted.Then,the finite element static analysis and dynamic simulation of the transverse probe rod and the ground floating detection mechanism were conducted in SolidWorks and RecurDyn.The results indicated that the horizontal transverse detection rod and ridge floating detection mechanism met the requirements of strength and stiffness in statics,the ridge floating detection mechanism had good effect of ridging,and the average deviation depth of the excavation shovel was kept within 20.5 mm.This study has reference significance for the smooth introduction of radish harvesting device during radish harvesting.
作者
张晓龙
易克传
姜春霞
凃何平
郭子明
ZHANG Xiaolong;YI Kechuan;JIANG Chunxia;TU Heping;GUO Ziming(College of Mechanical Engineering,Anhui Science and Technology University,Fengyang 233100,China)
出处
《东莞理工学院学报》
2024年第5期110-116,共7页
Journal of Dongguan University of Technology
基金
安徽省教育厅项目(2022AH051644)。
关键词
对行探测机构
垄面浮动
静力学分析
运动学仿真
line detection mechanism
ground floating
static analysis
kinematic simulation
