CA6900长途客车乘客门及舱门机械CAD图纸设计.doc

摘要 乘客门是客车的重要组成部分，是乘客上下车的通道，对客车的整体造型也起着重要的协调作用。随着我国汽车技术的发展，在长途车中我国汽车厂家已普遍采用了优势突出的外摆式乘客门。外摆式乘客门是一种无轨道的移出车门，门扇靠回转臂支撑，依靠转轴的转动带动门扇作近似于平行移动的运动，因而也称为平移门。 本文兼容外摆式乘客门和发动机舱门的设计。分析了外摆式乘客门和发动机舱门的工作原理以及其各部分的尺寸和一些主要零件的选型和安装。讨论了国内外客车附件工业的发展状况的比较。本次设计应用了CAD进行设计外摆式乘客门和发动机舱门. 关键词：外摆门，发动机舱门，CAD。 Abstract Passenger door is the important department of the coach, is the route way for the passengers. And assort with the whole coach sculpt. With the development of our vehicle technology, the domestic vehicle factory has already adopted the outer turning service door. It has much more predominance. The outer turning service door is the door which has no tram road and parallel move out of the coach, the door was supported by the circumrotate arm. By the rotation of the circumrotate axes, the door is moving close to the parallel move. Thus this door is called translation door. This paper introduces the design of the outer turning service door and the Engine cabin door. Analyzed the structure and operating principles of the outer turning service door and the Engine cabin door, determined the size of its parts and major components of the models and installation. Discussed the development of the vehicle annex industry. Application in this design the CAD software create in the outer turning service door and the Engine cabin door. Key word: the outer turning service door, the Engine cabin door,CAD 目 录 第一章 概论 1.1乘客门的类型……………………………………………………1 1.1.1乘客门的主要结构形式 ………………………………………1 1.2外摆门的优缺点……………………………………………………1 1.2 CAD技术的发展……………………………………………………2 第二章 国内外发展情况比较 2.1客车附件工业的特点…………………………………………3 2.2 目前国内客车车身附件的状况及与国外发达国家之间 的差距………………………………………………………………3 2.3对客车附件的发展建议……………………………………5 第三章 外摆式乘客门设计 3.1 外摆式乘客门的结构…………………………………………7 3.2乘客门泵选型……………………………………………………9 3.21门泵安装与调试………………………………………………11 3.3运动机构设计及校核……………………………………………12 3.3.1用作图法确定车门的运动轨迹…………………………12 3.3.2运动校核……………………………………………………15 3.4 外摆门的密封………………………………………………15 3.5外摆式乘客门的制作 3.5.1制作工艺………………………………………………………16