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1、小型清雪车的总体设计和三维建模小型清雪车的总体设计和三维建模学学 院院 机械工程学院机械工程学院专专 业业 机械工程及自动化机械工程及自动化济南大学机械工程学院二零零七年六月中文摘要本文在分析了目前国内外的主要除雪方法的基础上，提出一种适合中国国情的小型机械旋转式清雪车的设计方案，并对其进行了理论分析和实用结构设计分析，同时用 Solid Edge 软件绘制了三维实体造型效果图和二维工程图，为国内生产该种清雪车提供了完整技术资料。本文首先对道路上的压实积雪的物理机械性能进行分析研究，并查阅参考了目前的国内外有关该设备的大量资料，在已有成果的基础上，进行设计计算和机构创新，这些资料为本文设计计算
2、提供了重要的理论依据。在分析大型旋转式除雪机结构和设计理论的基础上，针对国内单位清雪分块承担的特点，本文对小型螺旋旋转式清雪车进行了深入分析，并进行了完善，设计了此种清雪设备。通过对已有小型清雪设备的分析研究，表明现有设备能实现基本的集雪、运雪和抛雪功能。但尚存在操作不方便，清雪效率不高等缺点。根据已有的理论研究基础，针对目前已有机械的不足，本文设计了带有抛雪叶轮、加有内置蜗杆传动和螺旋状集雪搅龙装置的清雪车，确定了其主要参数，传动方案和结构形式。设计时充分考虑了各种因素，对其中的关键部件抛雪轮进行了有限元分析，并应用人机工程学原理，可对扶手高度进行调节，使操作更加舒适方便。提出了一整套实用结
3、构，使得该机型大小适中，操作方便，外表美观。本文在设计和绘图中，采用先进的工程软件 Solid Edge 进行三维实体造型设计、二维工程图的绘制和有限元分析，为国内生产该种清雪车提供了一整套技术资料。各专业毕业论文范文尽在道客巴巴下载 各专业毕业论文范文尽在道客巴巴下载 关键词： 小型清雪车 三维造型及工程图 有限元分析 人机工程各专业毕业论文范文尽在道客巴巴下载 各专业毕业论文范文尽在道客巴巴下载 ABSTRACTAfter analyzing the various means of snow-clearings in the world at present, the project o
4、f a sort of mini snow-blower fit for China is put forward in this paper. Based on the theory study and applied structural design, the three-dimensional solid model and planar drawing have be completed with Solid Edge engineering software, which can offer an entire technical data and engineering draw
5、ings for producing factory. This paper first analyse the physical and mechanical properties of snow compaction on the road, then access to a lot of information about this equipment at home and abroad. Design calculations and institutional innovation is based on the result which has been researched.
6、All this information has provided an important theoretical basis for the design calculations and institutional innovate in this paper. On the basis of analysis structure and design theory of the large rotary Snowremoveing machine, arm to the characteristic of snowremoveing in the national company, M
7、ini Snow-blower is deeply reseached and consummated in this paper. Mini Snow-blower is designed. Overpass the research and analysis of mini Snow-blower nowadays,we realize that the equipment nowadays can carry out the functions of collecting,carrying and throwing snow.But there are some disadvantage
8、s,for e example, the manipulation is discommodiousness,the efficiency of snow removing is low. Refering to the foundation of the academic researches nowadays, contraposing the deficiency of mini Snow-blower , we devise a type of mini Snow-blower which with impeller, worm inside and twist collect equ
9、ipment. Mostly parameters, blue print of drive and modality of structure are ensured.All complications are calculated during design.The shrowing equipment is finite element analysisd which is pivotal part in mini Snow- blower.The principium of ergonomics is applied too,the height of handrail can be
10、accommodated. Manipulations get more comfortable.A complete set of banausic structures are brought forward.The magnitude of this equipment is moderate. Manipulation is convenience. Appearance is beautiful. During the designing and ploting, the three-dimensional solid model, planar drawing and finite
11、 element analysis have been completed with Solid Edge engineering software. A complete set of data is provided for the national companies which manufacture this mini Snow-blower.KEYKEY WORDSWORDS：Mini snow-blower, Experimental verification, Finite Element Analysis , Ergonomics - i -目 录第一章 绪论.11.1 选题的意义 .11.2 国内外研究现状及发展趋势 .21.3 本文主要任务 .2第二章 小型清雪车的总体方案研究比较.32.1 总体方案的几种组合及比较 .32.2 小型清雪车工作原理简述 .3第三章 小型清雪车的设计计算及校核.63.1 带传动计算 .63.2 蜗杆传动计算 .73.3 轴承寿命计算和润滑方式的选择 .103.3.1 寿命计算.103.3.2 润滑方式的选择.123.4 轴的校核 .12第四章 三维造型、人机工程学应用和有限元分析.144.1 三维造型 .144.1.1 小型清雪车整体造型.144.1.2 工作部分造型.144.1.3 行走部分造型.
