甘蔗收获机两段式螺旋捡拾机构模拟与试验

Simulation and experiments of two-stage spiral sugarcane picking-up mechanism

为了提高丘陵地带和坡地倒伏甘蔗的扶起率,该文提出了两段式螺旋捡拾机构设想,应用计算机建立了两段式螺旋扶起机构虚拟模型,进行了虚拟试验,确定了捡拾段的结构,建立了两段式螺旋捡拾机构接触点的运动方程、接触点的速度方程和甘蔗被扶起的运动条件,样机的试验结果表明:当甘蔗倒伏状态角在小于30°的顺倒伏状况下扶起率为20%,在30°～60°状况下为90%;甘蔗在侧倒伏状况下扶起成功率为100%;甘蔗在90°～120°的逆倒伏状况下扶起率为50%,在120°～150°的状况下仅为10%,在150°～180°逆倒伏状况下扶起率为0。

To improve the picking-up ratio of sugarcane in hillside area,design of two-stage spiral sugarcane picking-up machine was brought up in this paper.Computer model was established and applied for simulation of the virtual prototype.Further more,the structure of the picking-up section was confirmed,and the athletics and speed equations of the two-stage spiral sugarcane picking-up machine were constructed,and the athletics condition of lifting sugarcane was established.The results of the sample machine showed that,the ratio of success picking-up was 20%,90% and 100% respectively when the lodging angle was less than 30%,between 30° and 60° and at 90° side lodging.It was 50%,10% and 0 respectively when the lodging angle was between 90° and 120°,between 120° and 150° and between 150° and 180°.