设计简介
摘 要
我国是一个农业大国,水稻是约4.5万英亩最重要的粮食作物,水稻种植区之一。全国水稻种植面积占农作物面积的30%左右,产量近一半,2009年粮食总产量,中国的粮食产量达到10616十亿公斤,连续六年增加了一个新的纪录。中国南部地区的很大一部分是丘陵地带,在那里收获仍然是没有多大用处,大部分还是用人类,有一天,大约一亩地收割水稻,生产效率低,和早稻收获在夏天正好赶上最炙手可热的,具有极高的收获收割机效率的特点,一天甚至几十亩的水稻收获面积,如果他们可以使用联合收割机收割水稻,可大大减少劳动力,提高生产效率。因此,可以产生与良好的市场前景的中小型收割机丘陵地带。下面介绍水稻收割机减震器,它描述了主要使用减振二,基本结构和本文减震器工作原理,其动态的分析。通过比较液体气减振器传统弹簧和橡胶减振器的分析和评价的性能,为液 - 气减振器提供了用于水稻收割机的应用提供了理论基础。作为安全装置的一个减震器的机械设备被广泛应用于港口机械地震阻尼的领域。阻尼现有的产品,由于他们的材料,技术的限制,以及许多其它因素等方面,能够适应吊装和稀有领域产品的需求,因此新型阻尼器的发展具有非常重要的意义。设计了一种新型的液体 - 气减振器的采用了新型的阻尼结构,并且使用氮气的不疲劳,
小体积弹性模量的特性,它的容量和能量吸收性能优越,回弹时间短,能够以小冲程的较大的阻尼力优选地适于发展而获得需要的端口升降区域。
关键词:减振器,水稻收割机,气液减振器
Abstract
Our country is a large agricultural country, rice is one of the most important food crop, rice cultivation area of about 4.5 million acres. National rice planting area accounts for about 30 percent of the crop area, yield nearly half of the total grain output in 2009, China's grain output reached 10,616 billion kilograms, a new record for six consecutive years of increase. A large part of southern China region is hilly areas, where harvesting is still not much use, most still use human, one day, about an acre of land to harvest rice, low productivity, and early rice harvest in the summer just to catch the most hot, with a high harvest harvester efficiency characteristics, a day or even dozens of acres of rice harvested acres, if they can use the Combine harvesting rice, can greatly reduce labor and improve productivity. Therefore, can produce for small and medium harvester hilly areas with good market prospects.Now introduce rice harvester shock absorbers, which describes the main use of the vibration damping Second, a basic structure and working principle of this article shock absorber, and the analysis of its dynamics. By comparing the traditional spring and rubber shock absorber with liquid gas damper on the performance of the analysis and evaluation, for the liquid-gas shock absorber provides a theoretical basis for the application of rice harvester. As one of safety devices damper mechanical equipment is widely used in the field of port machinery seismic damping. Damping existing products, due to restrictions by their material, technology and other aspects of many other factors, able to adapt to the needs of the product in the field of lifting and rare, so the development of a new type of damper has very important significance. To design a new type of liquid gas damper using a new type of damping structure, and use of nitrogen without fatigue,
Small bulk modulus characteristics, its capacity and energy absorption superior performance, rebound time is short, can be obtained with a small stroke of the larger damping force is preferably adapted to the development needs port lifting area.
Keywords: shock absorber, rice harvester, gas-liquid damper
目 录
摘 要 IIIAbstract IV
第1章 绪论 1
1. 1我国联合收割机的现状 1
1.2我国联合收割机的发展前景 1
1.3 减振系统设计意义 2
第2章 水稻收割机的减振系统总体设计 3
2.1水稻收割机的减振系统设计原理 3
2.2 减振器结构及其工作原理 3
2.3 国内外研究现状 5
2.4 总体参数设定及假定 6
第3章 气液减振器工作机构设计 7
3.1缸体的设计 7
3.2 活塞的设计 9
3.3导向套的设计与计算 10
3.4 端盖和缸底的设计与计算 11
3.5 缸体长度的确定 12
3.6 减振装置的设计 12
3.7 密封件的选用 12
3.8节流杆的尺寸形状的确定计算校核 15
3.9 节流孔设计的形状选择计算和原理 17
3.10紧固螺钉计算 18
3.11 阻隔滑动活塞尺寸选择计算 20
3.12 气缸末端机构的结构尺寸计算选择原理 21
参考文献 22
总 结 23
致 谢 24