130t电动轮矿用自卸车车架设计.doc

摘要 矿用电动轮自卸汽车由于它运行环境恶劣，加之自身系统复杂，因而车架在各种载荷作用下极易发生破坏或失效。为了确保车辆在复杂工矿下的安全性和可靠性，就须对车架结构进行强度分析，验证研发设计的可行性。 本文对重型车架的结构和受力做了简单的分析，从而对130t电动轮矿用自卸车车架进行设计，确定车架的布置方案和其结构形式，进而确定了车架的总体尺寸和结构参数，进行了纵梁、龙门梁及第二、三横梁等各个部分的结构设计。再通过对车架结构、载荷分布及所受作用力进行一些基本假设，使其简化成为一个位于支座上的静定结构，方便了对其纵梁进行简化的弯曲强度计算，确定车架纵梁的断面尺寸和断面形态，并对车架纵梁的刚度进行校核。利用AutoCAD软件绘制车架及其零部件的二维工程图。 关键词 自卸车；专用车架；结构设计 Abstract Because of its harsh operating environment and its own complex system, the frame is prone to damage or failure under a variety of loadings. In order to ensure the vehicle’s safety and reliability in complex conditions, it is necessary to analyze the frame structure’s strength so as to verify the feasibility of the design for research and development. In this paper, the structure of heavy-duty frame and force to do a simple analysis of the 130t mining truck frame design, the layout of the frame to determine its structure and form, and then set the frame size and structure of the overall parameters conducted a longitudinal, gantry beams and the second and third beams, such as the structural design of various parts. Through on the frame structure, load distribution and the force suffered a number of basic assumptions to simplify into a bearing located in the statically indeterminate structure, convenient to carry out its simplified beam bending strength calculation to determine the longitudinal frame beam cross-section size and shape of the frame to check the stiffness of beam. The use of AutoCAD software components draw engineering drawings of frame and its model. Keywords dump truck; special frame; structural design 目 录 摘要 I Abstract II 第1章 绪论 1 1.1 课题背景 1 1.2 矿用汽车工业的发展综述 2 1.2.1 国外矿用汽车的发展现状 2 1.2.2 我国矿用汽车的发展及现状 3 1.2.3 重型矿用电动轮汽车的发展趋势 4 1.3 毕业设计的主要内容 5 第2章 车架设计概述 6 2.1 扭转刚度 6 2.2 弯曲刚度 6 2.3 单位扭转刚度 6 2.4 单位弯曲刚度 7 2.5 本章小结 8 第3章 车架的结构设计 9 3.1 车架的结构形式 9 3.1.1 周边式车架 9 3.1.2 X型车架 10 3.1.3 梯形车架 10 3.1.4 脊梁式车架 12 3.1.5 综合式车架 12 3.2 车架总体尺寸的确定 13 3.2.1 纵梁的设计 13 3.2.2 横梁结构及位置的确定 15 3.2.3 宽度的确定 17 3.