挖掘机工作臂的结构设计(含CAD零件图,装配图)
挖掘机工作臂的结构设计(含CAD零件图,装配图)(选题审批表,任务书,开题报告,中期检查表,论文说明书15000字,CAD图19张)
摘 要:挖掘机是一种重要的工程机械,它的应用十分广泛,主要应用于能源、交通、水利、城镇建设以及现代化军事工程等领域的机械化施工。挖掘机的工作过程是由三个油缸的复合动作及铲斗和土石方的相互作用来实现。挖掘机的使用已经进入了成熟化,市场竞争的不断加剧,使得产品的开发速度及其可靠性成为具有挑战性的因素,而我国的挖掘机开发周期长、成本高、设计手段落后,导致产品老化,缺乏市场竞争力。虚拟样机技术的逐步成熟,为解决这些问题提供了强有力的工具和手段[14]。
本文阐述了国内外多功能工程车的发展现状,进行了多功能工程车臂架系统的虚拟样机设计和仿真。在分析了挖掘机整体系统组成以及工作装置的设计要求与方法的基础上,利用autoCAD软件,对多功能工程车臂架系统进行设计,用强度校核计算对连杆和摇臂在各种情况下进行了静力分析,得到连杆和摇臂在特殊工况下的最大应力和最大变形,分析是否能够满足工作条件。
关键词:挖掘机;强度校核;工作臂。
Excavator arm structure design
Abstract: Excavator is a kind of important engineering machinery, its application is very extensive, mainly used in energy, communications, water conservancy, city construction and modern military engineering and other areas of mechanical construction. The working process of the excavator by three oil cylinder's compound movement and the bucket and the interaction of conditions to realize. The use of an excavator has entered is matured, increasing the market competition, make product development speed and reliability be challenging factors, but in China the excavator development cycle is long, the cost is high, the design means backward, and lead to aging products, lack of market competitiveness. The virtual prototype technology gradually mature, to solve these problems, provides powerful tools and method. [资料来源:http://Doc163.com]
This article elaborated the domestic and foreign engineering multifunctional vehicle development present situation, the multifunctional engineering vehicle arm system virtual prototype design and simulation. In the analysis of excavator overall system structure and the device design requirements and method, using autoCAD software, the multifunctional engineering vehicle arm system design, with the intensity calculation of connecting rod and a rocker in a variety of situations through the static analysis, get a connecting rod and a rocker arm in the special condition of maximum stress and analysis of maximum deformation, whether can satisfy the working conditions.
Keywords: excavator, strength check; working arm;Computer Aided Design
技术要求
(1)工程车臂架系统方案设计科学,具有良好的可行性;
(2)满足施工现场使用要求,具有较高可靠性和安全性;
(3)主要参考参数:
挖掘斗容量:0.2立方米;
最大挖掘力:大于40KN。
[来源:http://www.doc163.com]
[资料来源:http://doc163.com]
目 录
摘要…………………………………………………………………………………………5
关键词………………………………………………………………………………………5
1 绪论……………………………………………………………………………………6
1.1 课题背景及目的……………………………………………………………… 6
1.2 挖掘机的发展概况及前景…………………………………………………… 6
1.3 全液压全回转挖掘机特点及应用 ……………………………………………8
1.4 课题的主要内容及研究方法 …………………………………………………9
2 挖掘机工作臂的方案设计 …………………………………………………………9
2.1 挖掘机的结构 …………………………………………………………………9
2.1.1 挖掘机结构的概述………………………………………………………9
2.2 挖掘机工作臂的方案设计…………………………………………………… 10
2.2.1 技术要求………………………………………………………………10
2.2.2 臂架系统的组成………………………………………………………10
2.2.3 多功能工程车臂架系统的传动方案设计……………………………11
2.3 挖掘机工作臂方案的可行性分析……………………………………………11 [版权所有:http://DOC163.com]
2.3.1 挖掘机主要参数及性能指标…………………………………………11
3 挖掘机工作臂的结构设计……………………………………………………………15
3.1 挖掘机工作臂的设计原则……………………………………………………15
3.2 动臂机构………………………………………………………………………16
3.2.1 动臂机构参数选择…………………………………………………16
3.3 校核动臂力矩特性……………………………………………………………18
3.4 斗杆机构………………………………………………………………………20
3.5 铲斗机构的参数选择…………………………………………………………21
3.51 基本参数的选择………………………………………………………………21
3.52 斗型参数的选择………………………………………………………………21
[版权所有:http://DOC163.com]
3.6 最大卸载高度、最大挖掘深度和停机面最大挖掘半径的设计……………21
3.7 挖掘力的计算…………………………………………………………………23
4 强度校核……………………………………………………………………………20
4.1 斗杆强度校核………………………………………………………………26
4.2 动臂强度校核……………………………………………………………34
4.3 连杆摇杆和销轴的强度校核…………………………………………………40
6 结论 …………………………………………………………………………………42
参考文献 ………………………………………………………………………………42
致谢………………………………………………………………………………………43
[资料来源:http://Doc163.com]