第 3 章 桥架结构的计算..................................................................18
3.1 桥架主要尺寸确定...............................................................................................................18 3.2 主梁的确定................................................. 19
I
青岛理工大学本科毕业设计（论文）说明书
Abstract
With the development of the manufacturing sector, the progress of modern science and technology and the development of mass production, bridge crane is widely applied to industrial production, such as areas of production plants, warehouses, ports, industrial and mining enterprises .our overhead crane performance requirements are also increasing, which requires us to start from part design to ensure its growing industrial requirements. Bridge crane is a kind of intermittent operation of lifting the transport machinery, material handling as a tool in a working process, by loading, transport, unloading and returns to the original process, and thus to improve productivity, reduce costs, ensure product has a very important impact on the quality, improve transport efficiency and so on. As can be seen, handling technology will reduce product costs the most promising aspect. This paper describes the electric hook bridge crane cart double beam design theory and process, including traveling mechanism design, the design of bridge structure. There are electric motors, bearings, clutch, gear reducer selection and verification. This design correct selection of bridge structures and materials, guarantees in its use of strength, rigidity and stability, both in quality and functionality to meet the growing needs of industry. Key words: Bridge crane; The crane cart; Run institutions; Bridge structure .
第 1 章 绪论........................................................................................1
1.1 本课题的研究目的.................................................................................................................1 1.2 起重机目前的研究现状及未来发展方向...........................................................................1 1.3 桥式起重机的介绍及分类.................................................................................................... 2 1.4 桥式起重机的组成和特点.................................................................................................... 2 1.5 桥式起重机概论..................................................................................................................... 3 1.6 起重机设计的总体方案........................................................................................................ 4
II
青岛理工大学本科毕业设计（论文）说明书
目录 摘要......................................................................................... I Abstract................................................................................. II
第 2 章 大车运行机构的设计............................................................ 6
2.1 设计的基本原则和要求........................................................................................................ 6 2.2 确定传动机构方案.................................................................................................................6 2.3 车轮和轨道的选择及强度验算............................................................................................7 2.4 运行阻力的计算..................................................................................................................... 9 2.5 电动机的选择....................................................................................................................... 10 2.6 验算电动机发热条件...........................................................................................................10 2.8 验算运行速度与实际所需功率..........................................................................................11 2.9 验算起动时间....................................................................................................................... 11 2.10 起动工况下校核减速器功率............................................................................................12 2.11 验算起动不打滑条件.........................................................................................................13 2.12 选择制动器和联轴器........................................................................................................ 14 2.13 浮动轴的验算..................................................................................................................... 16
青岛理工大学 毕 业 设 计（论 文）
题目
8t 桥式起重机大车设计（跨度 28.5m）