摘要
曲柄摇杆与双摇杆齿轮组合机构具有结构简单、工作可靠等特点,可实现苗盘横向的精确传动,在苗盘输送机构中运用较多。但由于曲柄摇杆具有急回特性及机构做反复式运动必然产生振动和惯性力,影响机构运动平稳性,限制了机构工作效率。为此,针对一种应用于旱地移栽机苗盘横向输送传动机构——曲柄摇杆-双摇杆-齿轮传动机构,建立了机构的动力学模型,分析了曲柄、连杆、摇杆及齿轮之间的连接点与啮合点等处的受力随曲柄转角变化的规律。应用ADAMS软件完成了机构的虚拟样机模型建立,分析了机构作业过程中的动力学特征。利用上述方法找到了机构振动的原因,并提出解决减小振动方法,为苗盘传动机构的改进和进一步优化设计提供了理论依据。
Combination of the mechanism among the Crank-rocker ,double-rocker and the gear mechanism, which has a simple structure and reliable operation can achieve precise horizontal transmission of the seedling tray.It is usually used for transporting of the seedling tray.But owing to characteristics of the Quick-return motion and repeated motion ,which have made inevitable vibration and inertial force for the mechanism, It has made a great influence on the effect of smooth motion and working efficiency.Therefore, this article have brought forward a kind of combination of the mechanism among the Crank-rocker double rocker and the gear mechanism for the low upland transplanting seedlings and established the dynamic model of the mechanism.Based on the the dynamic model, the force among the crank, connecting rods, rocker , connection point has been analyzed.A virtual model of transmission machine of the seedling tray was built with ADAMS,which has analyzed the dynamic characteristics in the process of working Using the above method, we can find the cause of vibration, Additional counterweight adding up to the crank is beneficial to reduce some inertial force and to run smoothly, The dynamic analysis on the seedling tray would make a contribute to provide theoretical basis for further optimization design.
出处
《农机化研究》
北大核心
2017年第12期15-19,25,共6页
Journal of Agricultural Mechanization Research
基金
国家自然科学基金项目(51565048)
关键词
移栽机
苗盘输送机构
动力学
ADAMS
transplanting mechanism
transmission of the seedling tray
dynamics
ADAMS
作者简介
李树峰（1972-），男，沈阳人，硕士研究生，（E—mail）lilshufeng1029@qq．COm
曹卫彬（1959-），男，湖北襄阳人，教授，博士生导师，（E—mail）wbe828@163．COM。
