甜菜收获机几种常用部件的理论分析

本文对几种常用的甜菜收获机部件进行了初步的理论分析,其目的旨在为设计提供分析方法和依据。在叶顶切削部份,对轮式、驱动刀式和滑掌式三种仿形切削机构的仿形部件形状和参数分别进行了探讨,并且以轮式为代表推导出机构的转动惯量和弹簧压力、甜菜的株距和根头的高度差与牵引速度之间关系。在块根挖掘部份,对常用挖掘部件之一——起挖轮的结构和参数进行了理论计算,并且对栅状园盘上块根的运动作出分析,以确定部件最佳形状和参数,最后作图计算从一种新型的升运机构上块根飞入集箱的速度。

THEORETICAL ANALYSIS OF SOME FUNCTIONAL PARTS OF THE SUGARBEET HARVESTERS

In this paper, based on the result of author's several year's study and design work, the performance of some functional parts common used in the sugarbeet harvester was theoretically analysed, aiming to provide the analytical method for machine design use. This study consists of two parts: beet topping and beet lifting mechanisms. In the first part the shapes and parameters of the toppers of wheel type, driven knife type and slide feeler type were respectively discussed and taking the wheel type as a typical, the relationship of machine speed to the moment of inertia of its mechanism, the pressure of its pring and the spacing and height difference of beet tops. is obtained In the econd part the constrution and parameters of wheel type lifter-one of the ommon used types-were studied and the motion of the root on the surface of inger wheel was also theoretically analysed permitting to determine the optimum hape and dimensions. Finally, a graphical analysis of the chain speed of root elevator ensuring root a proper throwing into the box was suggested.