CAJ | 학술논문

开沟器是油菜播种机的核心部件，影响着播种机的工作性能和油菜出芽率。为了改善开沟器的入土性能和减小开沟器工作阻力，本文运用 LS－dyna 软件对小型手扶式油菜播种机的开沟器切削土壤进行了仿真，并对比分析了6种不同刀刃形状开沟器的工作阻力。结果表明：在其它参数和约束条件相同的条件下，开沟器以0．85 m／s前进时，锐角式开沟器的工作阻力小于钝角式开沟器；刀刃为曲线的锐角式开沟器的工作阻力小于刀刃为直线的锐角式开沟器；刀刃为凹曲线的锐角式开沟器的工作阻力小于刀刃为凸曲线的锐角式开沟器；刀刃为曲—曲组合式的开沟器在运行平稳后的工作阻力比刀刃为单一式的开沟器运行平稳后的工作阻力小。
개구기시유채파충궤적핵심부건，영향착파충궤적공작성능화유채출아솔。위료개선개구기적입토성능화감소개구기공작조력，본문운용 LS－dyna 연건대소형수부식유채파충궤적개구기절삭토양진행료방진，병대비분석료6충불동도인형상개구기적공작조력。결과표명：재기타삼수화약속조건상동적조건하，개구기이0．85 m／s전진시，예각식개구기적공작조력소우둔각식개구기；도인위곡선적예각식개구기적공작조력소우도인위직선적예각식개구기；도인위요곡선적예각식개구기적공작조력소우도인위철곡선적예각식개구기；도인위곡—곡조합식적개구기재운행평은후적공작조력비도인위단일식적개구기운행평은후적공작조력소。
Colter is the core component of coleseed seeder , it affects the working performance of seeder and coleseed seeder sprouting , in order to improve the soil piercing performance and reduce the working resistance of the colter .the colter cut soil about small working coleseed seeder using the LS -dyna software in this paper , comparison and analysis working resistance of six different cutting edge shape colter .With the other parameters are same , the results show that under the colter with 0.84 m/s, the work resistance of the acute angle colter is smaller than the work resistance of the obtuse angle coler , the work resistance of the acute angle colter of the curve cutting edge shape is smaller than the work resistance of the obtuse angle coler of the straight line cutting edge shape , the work resistance of the acute angle colter of the lower concave curve cutting edge shape is smaller than the work resistance of the obtuse angle coler of the upper con -vex curve cutting edge shape , the stability operation work resistance of curve-curve combined cutting edge shape is smal-ler than the stability operation work resistance of single edge shape .