文档介绍：优秀机械毕业设计欢迎下载,学****交流加 QQ197216396 专业机械设计解君之忧-1- 毕业论文中文摘要-2- 小型玉米脱粒机的传动装置和机架设计摘要农业是我国的基础经济、是国家发展的根本,机械化的普及,不仅使农业加强了农业化生产,同时也减轻了农民的劳动强度。为了降低农民在玉米脱粒时劳动强度、提高工作效率,需设计玉米脱粒机。该机主要有入料口、栅格式凹板和钉齿脱粒滚筒及传动装置等部件组成以电动机为动力源,动力由电动机输出,再通过传动带传递到钉齿脱离滚筒上,钉齿脱离滚筒配合栅格式凹板将玉米脱粒,玉米粒从栅格式凹板分离并排出机体外,而玉米芯从入料的另一端排出机体之外。该设计主要包括传动装置和机架设计。传动装置主要由主动轮、从动轮和传动带组成;机架主要由左机架、右机架、横梁、出粒板和出芯口组成。机器结构简单操作方便, 做大的优点是动力足,能较好的满足广大劳动人民的玉米脱粒生产需求。关键词脱粒机传动装置机架设计毕业论文外文摘要优秀机械毕业设计欢迎下载,学****交流加 QQ197216396 专业机械设计解君之忧-3- maize sheller design Abstract For reducing a peasant during the period of the maize threshes, the intensity of labour, raises working efficiency , designs maize sheller. Be machine's turn to have mainly enter expect that the mouth , bars form notch board and nail tooth the cylinder threshing and ponent etc. posed of. Take electric motor as driving force source, driving force exports axis output from the electric motor , the nail tooth seed-husking cylinder threshes on the cylinder threshing again by the fact that belt delivery arrives at the nail tooth, coordinating bars form notch board with the maize, besides plies with bars form notch board separation and the outside discharging airframe, but the maize core discharges airframe from another one end entering material. Keyword Maize Sheller Structure Design 目录-4- 1引言……………………………………………………………………………………… 1 2设计任务书……………………………………………………………………………… 1 3设计计算说明书………………………………………………………………………… 2 传动方案设计………………………………………………………………………… 2 电动机的选择………………………………………………………………………… 3 电动机的功率………………………………………………………………………… 3 电动机的转速………………………………………………………………………… 3 传动带的设计………………………………………………………………………… 4 确定计算功率…………………………………………………………………………5 选择带的型号…………………………………………………………………………5 确定带轮的基准直径…………………………………………………………………5 确定传动中心距和带长………………………………………………………………6 验算主动轮上的包角…………………………………………………………………7 确定 V带的根数………………………………………………………………………7 确定带的初拉力………………………………………………………………………8 求V带传动作用在轴上的压力………………………………………………………8 带轮的设计……………………………………………………………………… 8 带轮的材料选择