六行垄作(平作)花生收获机挖掘铲的设计与仿真分析  

Design and Simulation Analysis of Digging Shovel for Six-row Monopoly Crop(Flat Crop)Peanut Harvester

作　　者：李辉 尚书旗[1] 王东伟[1] 何晓宁[1] 岳丹松[1] 郭鹏 胥南 夏超 Li Hui;Shang Shuqi;Wang Dongwei;He Xiaoning;Yue Dansong;Guo Peng;Xu Nan;Xia Chao(College of Mechanical and Electrical Engineering,Qingdao Agricultural University,Qingdao266109,China)

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109

出　　处：《农机化研究》2023年第4期107-112,共6页Journal of Agricultural Mechanization Research

基　　金：山东省重点研发计划项目(2019GNC106088);山东省重大科技创新工程项目(2018CXGC0219);山东省农机装备研发创新计划项目(2018YF008)。

摘　　要：挖掘铲挖掘是整个花生收获过程的前提,主要通过花生挖掘铲松动花生根系土壤并铲断花生主根来实现。但是,挖掘铲的作业环境为地下,环境复杂且不可视,待挖掘铲进入土层后其作业性能与质量无法直接进行评估,同时随着挖掘收获机的大型化发展,挖掘铲的作业环境更加复杂、多变,挖掘阻力也随之急剧增大,迫切需要对花生挖掘铲的土下工作过程进行分析研究,探究其工作过程中挖掘阻力的影响因素。为此,以宽幅挖掘铲为研究对象,利用EDEM离散元仿真软件对宽幅挖掘铲的工作过程进行仿真试验分析,通过分析挖掘铲不同工作参数下所受阻力的变化情况并结合田间试验,确定六行平作(垄作)花生收获机挖掘铲的设计参数。经仿真试验与田间试验相互验证,宽幅挖掘铲的入土角为24.7°、工作速度为1.1m/s、铲面长度为190 mm时,整体工作效果最佳。The excavation process of the excavation shovel is the premise of the entire peanut harvesting process,mainly through the peanut excavation shovel to loosen the soil of the peanut root system and shovel the main root of peanut to achieve,but the operating environment of the excavation shovel is underground,the environment is complex and unseen,after the excavation shovel into the soil layer,its operational performance and quality can not be directly assessed,while with the development of large-scale excavation harvester,the operating environment of the excavation shovel is more complex and changeable At the same time,with the development of large-scale excavation and harvesting machines,the operating environment of the excavation shovel is more complex and variable,and the excavation resistance also increases sharply.This paper takes the wide digging shovel as the research object,and uses EDEM discrete element simulation software to conduct simulation test analysis of the working process of the wide digging shovel,and determines the design parameters of the digging shovel of the six-row flat crop(monopoly crop)peanut harvester by analyzing the changes of the resistance under different working parameters of the digging shovel and combining with the field test.The simulation test and the field test mutually verified that the overall working effect of the wide digging shovel was best when the entry angle was 24.7°,the working speed was 1.1m/s and the shovel face length was 190mm.

关 键 词：花生收获机 挖掘阻力 离散元仿真 垄作 平作 

分 类 号：S225.7[农业科学—农业机械化工程]