联合收割机割禾器研究及的设计(附CAD图纸).docVIP

需全套CAD图纸 联系QQ 648328618各专业都有 摘要 摘　要：本文是对联合收割机割禾器的研究与设计，在认真分析现有联合收割机优缺点的基础上，提出了一种新的联合收割机割禾器设计方案。设计的联合收割机割禾器在满足普通收割机的功能的基础上做了一些改进，设计一种具有割禾快速，稻穗损失少，成本低，且效率更高，性能更好的割禾器。广泛的适用于中小型联合收割机。运用机械优化设计方法对割禾器各个部件进行优化设计，以降低制造成本，从而降低收割机的价格 其主要内容包括系统总体方案的设计、割禾器定、动刀架的设计、割禾器动刀架传动机构的设计、割禾器动刀架的切割速度的设计、联合收割机割禾器螺旋推运器的设计、联合收割机割台的设计、外形尺寸设计。 此联合收割机割台，结构简单、性能可靠，它能大大减少庄稼被压倒的现象，且它在工作时可避免庄稼的壅堵现象，从而使联合收割机的工作效率进一步提高。Abstract and keywords Abstract: This article is a combine harvester Wo device research and design combines a careful analysis of the existing advantages and disadvantages of proposed based on a new combine harvester Wo Design program. Wo design combine harvester harvester device functionality to meet the common basis has made some improvements have cut Wo design a rapid, less rice loss, low cost, and efficient, and better cutting performance Wo device. Widely applicable to small and medium combine. Optimal design method using mechanical devices in various parts of the cutting Wo to optimize the design to reduce manufacturing costs, thereby lowering the price of harvesters  The main contents include the overall program design, cutting Wo device set, the design of fixed knife, cutting knife drive mechanism moving Wo device design, cutting Wo cutting speed on Dynamic turret design, device combines cutting Wo Screw pushing of Design, combines cutting station design, form factor design.  This combine harvester platform, simple structure, reliable performance, it can significantly reduce the phenomenon of crops to be overwhelming, and it is at work to avoid crop obstruct and block, so that combines the efficiency further. Keywords: Wo cutting device; knife; screw propeller 第一章 绪 论 1.1 课题背景 我国是农业大国，水稻是我国最重要的粮食作物之一水稻种植面积约4.5亿亩。全国水稻种植面积约占粮食作物面积的30％，产量接近粮食总产量的一半2009年我国粮食总产量达到10616亿斤，再创历史新高，连续6年增产。湖南处于长江中下游平原，是我国重要的粮食产地之一，而且大部分地区为丘陵地带，这些地方收割机的使用仍不多，大部分仍使用人力，一个人一天收割水稻大约一亩地，生产效率低，而且早稻收获时节恰好赶上夏天最热的时候，收割机具有收割效率高的特点，每天能收割水稻几十亩甚至上百亩，如能使用联合收割机收割水稻，可以大大减轻劳动力，提高生产率。因此，能制造出适用于湖南丘陵地区的中小型收割机具有很好的市