摘要为了打击水下蛙人等目标，设计出一种可以在 40 mm 榴弹上使用的机械触发引信， 要求能入水延时 1s 后引爆弹丸战斗部。通过对以往相关引信的总结分析，确定了引信的 设计方案。引信为弹底机械触发引信，在结构上由传爆序列、冗余保险装置、转子隔爆 机构、触发机构组成。通过理论计算对零部件危险部位的强度进行校核，证明了零部件 危险部位的强度满足设计要求；通过对弹簧的强度进行校核，对水平转子式隔爆机构和 无返回力矩钟表延期解除保险机构的工作时间进行理论计算，对引信发火可靠性进行理 论计算，证明了弹簧、隔爆机构、延期解除保险机构和触发机构的设计满足要求；对引 信各零部件进行了尺寸链的计算，证明了引信各零部件尺寸设计满足互换性要求，可以 正确装配。通过计算得知引信技术指标与功能都能得到实现。70154

毕业论文关键词 引信 强度计算 机械触发 保险 尺寸链

毕 业 设 计 说 明 书 外 文 摘 要

Title The system analysis and design of the mechanical fuze for grenade launchers

Abstract

A mechanical contact fuze which can be used in 40mm on the grenade is design to combat underwater targets such as frogman, the requirement is that there is a function of the projectile that can be detonated after the 1s is in the water. Through the analysis of the previous correlation-fuze, the design scheme is determined. The fuze is a mechanical contact fuze at the grenade bottom, which is made up of explosive train, redundancy safety devices, rotor interrupter device and contact firing mechanism in structure. Through the oretical calculation to check the strength of the dangerous parts of the components, proof that the strength meets the design requirements. By checking the strength of the spring, calculating the rotation time of the horizontal rotor type interrupter device and the runaway clockwork delay arming mechanism, calculating the reliability of combustion initiation of the fuze, proof that the spring, the interrupter device, the delay arming mechanism and the contact firing mechanism meet the design requirements. By calculating the dimensional chain of each component of the fuze, proof that the design of each part of the fuze meets the requirement of the interchange and can be assembled correctly. The fuze Specifications and functions can be achieved through the calculation.

Keywords fuze strength calculation mechanical contact safety dimensional chain

本科毕业设计说明书 第 I  页

目 次

1 引言 1

1.1 本课题研究背景 1

1.2 触发引信研究概况 1

1.3 机械触发引信研究概况 1

1.4 榴弹触发延期引信研究概况 3

1.5 本文研究的主要内容 4

2 总体设计 5

2.1 设计计算依据 5

2.2 引信设计 6

2.3 保险与解除保险装置 7

2.4 隔爆机构 8

2.5 传爆序列