自走式青贮玉米切碎打捆装置设计研究.

In order to solve a few problems of silage cutting device and baling device, the position-variable cutting device and rubber "herringbone" steel roll baling device are designed. Using the finite element devices to simulate the main components, and comparing the forces of the two tool materials, it is concluded that 60 Mn steel has better cutting effect compared with 45 steel; The radial deviation between the tool center axis and the theoretical axis is small to 1 mm, which satisfies the requirements, and the test analysis of 5 tools at the constant tool speed shows that the best uniformity appears when the amount of tools is 32, which reaches 91%. By analyzing the linear relationship between fragmentation uniformity and baling density, we conclude that fragmentation uniformity is linearly related to bale density. The motion analysis of the grain accumulation in the baling shows that the angle between the lower plane and the horizontal plane of the synchronous zone directly affects the degree of straw compaction. The improved position-variable cutting device can meet the crushing needs of a large range of different crops, and the floating steel roller design can increase the friction between the axial surface and the straw. Compared with traditional machines and tools, the whole improved device has certain advantages of cutting and baling. [ABSTRACT FROM AUTHOR]

为解决青贮饲料切碎装置和打捆装置切碎兼容性差、草捆压实度低等问题, 设计了可变 位切碎装置和橡胶 “人字形” 钢辊打捆装置。利用有限元对切削装置主要结构零件进行了分析和仿 真处理, 通过比较两种刀具材料对切碎的受力情况, 得出 60 锰 (Mn) 钢比 45 钢拥有更好的切碎效果; 刀具质心轴线与理论轴线径向偏移距离小至 1 mm, 可满足使用要求; 以恒定的刀具转速, 进行了 5 把 刀具数量切削的试验分析, 结果表明切碎刀具为 32 把时切碎均匀性最佳, 达 91%。通过分析切碎均 匀性和打捆密度间的线性关系, 得出切碎均匀性与成捆密度的线性关系。对打捆仓谷物堆积进行运 动分析, 结果表明同步带下平面与水平面方向夹角直接影响秸秆的压实度。改进设计的可变位切碎 装置可满足较大范围的不同作物的切碎需求, 浮动钢辊式设计可增加轴面与秸秆间的摩擦力。相对 于传统机具, 整个改进装置拥有一定的切碎打捆优势。 [ABSTRACT FROM AUTHOR]