摘要随着现代化战争的发展，轻型牵引榴弹炮凭借其重量轻、战略机动性好、火力强、后勤依赖性较弱等优点再次站到了战争的舞台前沿，极大地提高了快速反应部队的战斗力。在155mm榴弹炮设计中运用融合平衡功能和升降功能于一体的液体气压式高平机，具有简化火炮结构、减轻全炮重量、提高其机动性和战斗力的重大意义。

本文通过对液体气压式高平机的工作原理和其平衡性能的影响因素的分析，根据其结构受力特点，提出了一个液体气压式高平机的设计方案。确定了高平机的结构和尺寸参数，选择了合适的手动液压泵，对高平机的主要零部件进行强度校核。从而对方案的可行性进行了分析和证实。63548

毕业论文关键词  液体气压式高平机 结构设计 参数校核

 毕业设计说明书（论文）外文摘要

Title    Structure Design of Hydropneumatic Mechanism    of Elevating and Equilibrating               

Abstract

With the development of modern warfare, light towed howitzer which has many merits such as low weight, good strategically maneuverability, strong firepower, less dependent upon logistics and so on has been brought on the stage of war again, it could greatly improve the battle effectiveness of immediate reaction force.

Though hydropneumatic mechanism of elevating and equilibrating which has multifunction of equilibrating and elevating was used in the design of 155mm howitzer, it had important meanings such as simplifying structure, lightening weight, enhancing maneuverability and battle effectiveness of the artillery.

The thesis analyzes the work principium and influential equilibrium factors of hydropneumatic mechanism of elevating and equilibrating. Subsequently, according its structural bearing traits, its structure was confirmed with parameters. And appropriate hand hydraulic pump was selected. In the end, the intensity of its central parts was proofed. 

Keywords Hydropneumatic mechanism of elevating and equilibrating Structure design Verification parameters

1  绪论 1

1.1  选题的背景和意义 1

1.2  国内外轻型火炮的发展 2

1.3  高平机的作用及其发展现状 3

1.4  本文的主要研究内容 5

1.5  本章小结 5

2  液体气压式高平机工作原理及影响因素分析 6

2.1  液体气压式高平机的基本工作原理 6

2.2  摩擦阻力对平衡性能的影响及改善措施 8

2.3  本章小结 8

3  液体气压式高平机的结构设计 9

3.1  高平机的参数设计 9

3.2  零部件几何尺寸参数的设计 16

3.3  手动液压泵的选择 18

3.4  高平机的密封 20

3.5  本章小结 22

4  高平机主要零件的强度校核 23

4.1  高平机外筒强度校核 23

4.2  高平机内筒强度校核 23

4.3  活塞杆的强度及稳定性验算 24