摘要
针对高速作业时排种器作业效率低和漏播严重等问题,本文设计了一种单腔斜置高速排种器排种盘,并对其力学性能进行了分析。首先,建立单腔斜置高速排种器排种盘的三维模型;然后,将该模型导入有限元分析模块中,选取求解器和解算方案类型,对相关材料属性进行定义,划分单元网格,设置载荷类型并求解。结果表明:在500 r/min转速下,排种盘所受到的最大应力为0.1250 MPa、最小应力为0.0003 MPa,排种勺穴腔所受到的最大应力低于0.003 MPa;排种盘在500 r/min转速下所产生的最大位移量为0.000382 mm,排种勺穴腔所发生的最大位移为0.000317 mm,该变形对高速排种器寿命和磨损的影响几乎可以忽略。从上述分析结果可知,在高转速作用下,该排种盘的力学性能满足作业要求。同时,上述分析结果可为机械式排种器的设计提供理论指导。
Aiming at the problems of low efficiency and serious miss-seeding of seed metering device during high-speed operation,a seed metering disc of single cavity inclined high-speed seed metering device was designed in this paper,and its mechanical properties were analyzed.Firstly,the three-dimensional model of seed metering disc of single cavity inclined high-speed seed metering device was established;secondly,the model was imported into the finite element analysis module,the solver and solution type were selected,the relevant material properties were defined,the element mesh was divided,and the load type was set and solved.The results showed that at the speed of 500 r/min,the maximum stress of seed metering disc was 0.1250 MPa;the minimum stress was 0.0003 MPa,and the maximum stress of seed metering spoon cavity was less than 0.003 MPa,the maximum displacement of the seed metering disc was 0.000382 mm,and the maximum displacement of the seed metering spoon cavity was 0.000317 mm.The influence of this deformation on the service life and wear of the high-speed seed metering device could be almost ignored.From the above analysis results,it can be seen that the mechanical properties of the seed metering disc meet the operation requirements under the action of high speed.At the same time,the above analysis results can provide theoretical guidance for the design of mechanical seed metering device.
作者
谭闯
郭俊
赵健
王霖芋
韦中庚
杨跃
TAN Chuang;GUO Jun;ZHAO Jian;WANG Linyu;WEI Zhonggeng;YANG Yue(School of Automotive Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051)
出处
《现代农业科技》
2023年第3期10-13,共4页
Modern Agricultural Science and Technology
基金
校人才科研启动经费“农业车辆悬挂系统的反馈机理与自适应性问题研究”(xjr2019035)
江苏省创新训练项目一般项目“复杂环境下农业车辆作业性能及通过性研究”(202210305086Y)。
关键词
排种盘
UG建模
有限元分析
应力
位移
seed metering disc
UG modeling
finite element analysis
stress
displacement
