起落架缓冲器故障分析与修理 - 图文

毕业论文

题 目

起落架缓冲器故障分析与

修理

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姓 名 代承龙 专 业 飞行器动力工程 班 级 CS0213108 学 号 CS021310833 指导教师 钟易成 副教授

南京航空航天大学

2015年6月01日

毕业设计（论文）报告纸

目 录

摘 要 .......................................................................................................................................... - 1 - Abstract .................................................................................................................................... - 2 - 第一章 起落架概述 ................................................................................................................ - 3 -

1.1 起落架配置形式 ....................................................................................................... - 3 - 1.2 起落架起结构形式 ................................................................................................... - 5 - 第二章 起落架缓冲器 ............................................................................................................ - 8 -

2.1 缓冲器原理 ............................................................................................................... - 8 -

2.1.1 缓冲器 ............................................................................................................ - 8 - 2.1.2 减震支柱分解/检查/组装 .............................................................................. - 8 - 2.1.3 减震支柱密封 .............................................................................................. - 11 - 2.1.4 减震支柱灌充 .............................................................................................. - 11 - 2.2 缓冲器原理 ............................................................................................................. - 12 -

2.2.1 油气式缓冲器 .............................................................................................. - 12 - 2.2.2 单腔油-气式减震缓冲器的构造 ................................................................. - 14 -

第三章 缓冲器故障与分析 .................................................................................................. - 18 -

3.1 检测方法 ................................................................................................................. - 18 - 3.2 减震支柱受力分析 ................................................................................................. - 19 - 3.3 维修方案 ................................................................................................................. - 20 -

3.3.1 电弧焊工艺 .................................................................................................. - 20 - 3.3.2 压力焊工艺 .................................................................................................. - 20 - 3.4 方案实施 ................................................................................................................. - 21 -

3.4.1 焊接的准备工作 .......................................................................................... - 21 - 3.4.2 焊接的规范参数选择 .................................................................................. - 21 - 3.4.3 焊接过程 ...................................................................................................... - 21 - 3.4.4 焊后处理 ...................................................................................................... - 22 -

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毕业设计（论文）报告纸

第四章 缓冲器维护经验 ...................................................................................................... - 23 - 结束语 ...................................................................................................................................... - 24 - 参 考 文 献 ............................................................................................................................ - 25 - 致谢 .......................................................................................................................................... - 26 -

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毕业设计（论文）报告纸

起落架缓冲器故障分析与修理

摘 要

起落架缓冲器是飞机的重要组成部分，飞机着陆接地和地面运动时，起落架会受到垂直载荷、水平载荷、侧向载荷。飞机起落架的外载荷容易使起落架缓冲器发生裂纹故障，本文主要针对飞机起落架裂纹进行维修，重点阐述了飞机起落架减震支柱的裂纹故障和维修方法，利用超声波无损探伤技术探测裂纹,选用钨极氩弧焊维修裂纹。

关键词：起落架 裂纹 故障 支柱

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毕业设计（论文）报告纸

Abstract

The landing gear is the important part of a plane, aircraft landing ground and ground motion gear subjected to vertical loading, the horizontal load, and the lateral load. The landing gear of an aircraft landing gear load tends to occur crack fault, this article mainly aims the aircraft main landing gear strut crack repair ,elaborated with emphasis the airplane main undercarriage lower end of the strut the crack fault and repairing way ,by welding process ,The use of ultrasonic nondestructive testing technology in crack detection , Selection of tungsten electrode argon arc welding argon arc repair of cracks.

Key words: landing gear crack fault strut

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