甘蔗收割机单圆盘根切器虚拟样机研究

为了研究收割机单圆盘根切器运动、几何参数对甘蔗切割质量、收获损失的影响,使用ObjectARX在AutoCAD平台上建立根切器虚拟样机,对其工作过程进行了研究。研究表明:切割过程中存在多刀切割和重复切割甘蔗现象,该现象通过高速摄影试验得到了验证。给出了甘蔗受到多刀切割和重复切割刀数的计算公式,出现多于两刀切割的现象主要是由于刀盘转速、收获机前进速度和刀片数之间的匹配问题,是可以避免的。刀片安装角度影响刀片切入甘蔗所经历的路程,并且相当于改变了实际切入甘蔗的刀片厚度。甘蔗和根切器的相对位置影响根茬与刀片之间的作用力。

Virtual Prototype Study on Single Disc Basecutter of Sugarcane Harvester

In order to study the influence of geometric and kinematics parameters of the single basecutter on cutting quality and mass loss during cutting,the virtual prototype of the basecutter was created by using ObjectARX and AutoCAD.Virtual test study showed that:the phenomenon of multi-blade cutting and repeatedly cutting was found,and it was verified by high-speed photograph test;the times of occurring multi-blade and repeatedly cutting were also derived.The multi-blade cutting which exceeded two-blade occurred for the reason of matching among parameters of speed of rotation,forward velocity,and numbers of blades,and it could be avoided;different oblique angle would lead to different passing through distance of the blade,and it is equivalent to different blade thickness in cutting;different position of sugarcane to basecutter would influence on the stress of the stubble when being cut.