自行式小型电动玉米播种机设计与仿真
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摘要
针对小型田块玉米播种难问题,设计了一种小型电动玉米播种机。该机主要由车体、播种机构和传动机构组成。利用ANSYS Workbench软件对电动玉米播种机的关键部件地轮轴进行了静力学分析,对大车架进行了模态分析,给出了大车架的主振型。分析结果发现地轮轴的最大应力变形量为2.12 MPa,小于地轮轴许用应力值120 MPa;大车架可以选择强度更大的材料或更改大车架横梁尺寸来降低大车架的振幅。电动玉米播种机满足了农艺要求,对以后研究、设计及优化电动玉米播种机提供理论基础。
Aiming at the problem of difficult maize seeding in small plots, a small electric corn planter is designed. The machine is mainly composed of car body, sowing mechanism and transmission mechanism. The ANSYS Workbench software is used to analyze the statics of the key parts of the electric corn planter, the modal analysis of the large frame is carried out, and the main vibration mode of the large frame is given. The analysis results show that the maximum stress and deformation of the earth wheel shaft is 2.12 MPa, less than the allowable stress value 120 MPa of the earth wheel axle, and the large frame can choose the material with higher strength or change the size of the large frame beam to reduce the amplitude of the large frame. The electric corn planter meets the requirements of agronomy, and provides a theoretical basis for future research, design and optimization of electric corn planter.
Aiming at the problem of difficult maize seeding in small plots, a small electric corn planter is designed. The machine is mainly composed of car body, sowing mechanism and transmission mechanism. The ANSYS Workbench software is used to analyze the statics of the key parts of the electric corn planter, the modal analysis of the large frame is carried out, and the main vibration mode of the large frame is given. The analysis results show that the maximum stress and deformation of the earth wheel shaft is 2.12 MPa, less than the allowable stress value 120 MPa of the earth wheel axle, and the large frame can choose the material with higher strength or change the size of the large frame beam to reduce the amplitude of the large frame. The electric corn planter meets the requirements of agronomy, and provides a theoretical basis for future research, design and optimization of electric corn planter.
引文
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[2]赵建托,赵武云,任颜华,等.玉米全膜覆盖双垄沟播机直插式播种装置设计与仿真[J].农业机械学报,2010,41(10):40-43,96.
[3]徐良,肖洁,张佩,等.山地小型玉米播种机粒距变异系数的试验分析[J].农产品加工,2015(1):75-77,81.
[4]杨柳,衣淑娟,武志,等.2BZD-2型智能电动播种机施肥机构设计与试验[J].农机化研究,2019,41(2):104-108.
[5]李斯祺,杨雪,周雨溦.气吸式玉米电动播种机智能控制系统[J].现代食品,2017(4):60-61.
[6]于国明,胡军.精密电动播种机设计及试验研究[J].农业机械,2014(21):127-133.