CAJ | 학술논문

排种系统是免耕播种机的重要组成部分，其性能直接影响到免耕播种机整体工作质量。导种管为排种系统最后一个环节，主要作用是将排种器排出的种子导入开沟器并使种子能够顺利落入种沟内，其投种位置和速度对排种系统的排种均匀性有较大影响。本文用离散元软件，对导种管施加直线运动和正弦振动，模拟玉米种子由颗粒工厂生成后，经过导种管下落到土地的过程。同时，经离散元后处理模块得到玉米种子在土地上的分布图、种子的运动轨迹及种子在导种管内运动的最小速度和种子离开导种管时的速度；并用 origin 软件得到种子在导种管内运动的最小速度与导种管高度的拟合曲线、种子离开导种管时的速度与导种管高度的拟合曲线。模拟结果表明：当免耕播种机作业速度为1．389m／s时，最佳导种管高度应为500mm。
배충계통시면경파충궤적중요조성부분，기성능직접영향도면경파충궤정체공작질량。도충관위배충계통최후일개배절，주요작용시장배충기배출적충자도입개구기병사충자능구순리락입충구내，기투충위치화속도대배충계통적배충균균성유교대영향。본문용리산원연건，대도충관시가직선운동화정현진동，모의옥미충자유과립공엄생성후，경과도충관하락도토지적과정。동시，경리산원후처리모괴득도옥미충자재토지상적분포도、충자적운동궤적급충자재도충관내운동적최소속도화충자리개도충관시적속도；병용 origin 연건득도충자재도충관내운동적최소속도여도충관고도적의합곡선、충자리개도충관시적속도여도충관고도적의합곡선。모의결과표명：당면경파충궤작업속도위1．389m／s시，최가도충관고도응위500mm。
The metering system is an important part of no tillage planter, its performance directly affects the overall quali-ty of the work of no tillage planter.Seed tube is the last link of metering system, the main role is to be discharged from the seed metering device into the opener and allow the seed to smoothly fall into a ditch, the investment for the position and speed of metering system metering has great influence on uniformity.In this paper, using the discrete element soft-ware, to guide tube applied linear motion and sinusoidal vibration, simulation of corn seeds generated by particle factory, after seed tube fall into the land of the process.Discrete element post-processing module obtains the distribution graph of corn seed in the ground and motion trajectory of seeds, seed left seed tube when the velocity at the minimum speed and seed seed guide tube movement;and use the origin software to obtain seeds at the minimum speed and a guide pipe mo-tion in pipe fitting curve, the seeds degree of the left guide tube with the speed at which a guide tube height fitting curve. The simulation results show that:no tillage seeding machine operation speed of 1.389m/s, the best guide tube height is about 500mm.