30T轴重货车轴承箱结构设计
时间:2018-04-23 20:44 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：重载货车轴箱是联结在铁路机车和车辆轴颈上，与轮对和转向架构架相关的部件。轴承箱能够把车体承载的总重量传给轮对，并承受轮对在行驶时产生的轴向力和径向力；为了保护轴承箱各部件，并减少摩擦，降低运行阻力，在轴承箱中注有润滑剂。根据实际情况表明，使用 30t 轴重货车是提高铁路运输性能最好的方法。我国当前铁路货车使用的轴承轴重为25t，设计出 30t 轴重的重载货车，掌握大轴重货车的轴承轴箱尺寸和结构是铁路发展的必要过程。本课题综合当前铁路的发展趋势，分析了现有铁路货车轴承箱的尺寸和结构；利用所学有关力学、机械、设计等方面的知识，对列车轴承箱进行受力分析；利用绘图软件对滚动轴承轴箱结构进行设计，并绘制工程图。由于当前铁路货车向着重载的方向发展， 客观上要求在设计轴承箱时需进一步提高轴承的承载力， 使轴承具有高强度、高可靠性以及较长的寿命。21660 毕业论文关键词：滚动轴承轴箱；结构设计；寿命；润滑；密封 30 tons of heavy axle shaft bearing box structure design Abstract: Overloaded truck axle box is connected in railway locomotive and vehicle axle neck, and the wheel of the related components and bogie frame. Bearing box to pass round the total weight of the car body carrying on, and inherit the wheel to produce a moving to axial force and radial force; In order to protect the bearing box parts, and to reduce friction, reduce the running resistance, note a lubricant in the bearing housing. According to the experience of railway truck overloading transportation, the use of 30 tons of axle load of freight is the best way to improve the performance of railway transportation. The current use of railway wagon bearing axle load is 25 tons, designed 30 tons of axle load of overloaded trucks, mastering the big truck axle load bearing axle box size and structure is a necessary process of railway development. This topic comprehensive development trend of the current railway, analyzes the existing railway wagon bearing box size and structure; Use what they have learned knowledge about mechanics, mechanical, design and stress analysis was carried out on the train bearing box; Rolling bearing structure of axle box to make use of drawing software design, and map project. Due to the current development in the direction of the overloaded railway wagon, objectively requires when designing bearing box need to further improve the bearing capacity of the bearing, the bearing has high strength, high reliability and long life. KeyWords: roller bearing axle box；bearing capacity；life；lubrication；sealing 目录 目录1 1 绪论1 1.1 选题背景.1 1.2 本课题的目的和意义.2 1.3 国内外轴承轴箱研究现状.3 1.4 文章研究技术路线.4 2 轴承箱的总体设计方案... 5 2.1 重载货车滚动轴承的功用和类型.5 2.2 重载货车滚动轴承的类型和特点.5 2.3 30T 轴重货车轴承的工况分析和计算.. 7 2.3.1 车辆滚动轴承的受载情况分析..7 2.3.2 车辆滚动轴承的寿命计算..8 2.3.3 滚动轴承的静强度和计算准则11 2.3.4 滚动轴承的静强度计算公式12 2.3.5 滚动轴承游隙的合理选择13 2.3.6 轴承套圈的轴向固定14 2.3.7 滚动轴承的预紧及配合14 3 轴承箱箱体结构设计. 15 3.1 轴承箱箱体主要零件...15 3.2 轮对各部件及装配图...19 3.3 轴承箱的材料选择...20 3.4 有限元分析过程...21 4 轴承箱的润滑与密封. 23 4.1 润滑油的作用和选择...23 4.1.1 轴承的摩擦23 4.1.2 滚动轴承的磨损预测23 4.1.3 滚动轴承的润滑方式和设计原则23 (责任编辑：qin) |