25MN液压机毕设说明书 - 图文

摘要

摘要

液压机的制造与使用长长标志一个国家的的工业水平，它不仅仅是重工业建设的工具，而且也是国防工业中一种重要生产设备。几年来，随着我国制造业的飞速发展，特备是基础装备制造业的蓬勃发展，促进锻造这一传统基础工业进入了一个新的发展历程。锻造液压机是其中重要的成型设备。

根据设计题目及任务的要求，本文中介绍了25MN锻造液压机的设计过程。此液压机采用双立柱，拉杆预应力预紧结构，动梁采用组合式机构，上梁和下梁则是整体铸造。两侧为柱塞缸，中间活塞缸兼起回程作用，保证了液压机能达到公称压力和工作行程。

关键词 锻造液压机、液压机、预应力

I

Abstract

Abstract

Manufacture and use of hydraulic machines often marks a country's industrial level, it is not only heavy construction tools, but also an important defense industry in the production equipment. In recent years, with the rapid development of China's manufacturing industry, especially the rapid

development of equipment manufacturing base and promote the traditional basic industries into forging a new course of development. Forging hydraulic press is an important molding equipment.

According to a design and mission requirements, this article describes the 25MN Forging Hydraulic design process. This hydraulic dual-column, rod pretension prestressed structure, moving beam with modular structure, the upper beam and lower beam is the whole cast. Both sides of the piston cylinder, piston cylinder and the intermediate role in the recovery of the city, to ensure the hydraulic function to the nominal pressure and stroke work.

Keywords Forging, Hydraulic presses, Pre-stressed

II

目录

目录

摘要 ....................................................................................................................... I Abstract ................................................................................................................ II 第1章 绪论 ......................................................................................................... 1

1.1 课题背景 ............................................................................................... 1 1.2 国内外液压机发展现状 ..................................................................... 1 1.2.1 液压机的发展方向和趋势 ......................................................... 1 1.2.2 国内液压机行业的现状 ............................................................. 2

第2章 液压机的概述 ......................................................................................... 5

2.1 基本原理 ............................................................................................. 5 2.2 液压机的分类 ..................................................................................... 6 2.3 液压机的主要参数 ............................................................................. 6 2.4 液压机的应用领域 .............................................................................. 7 2.5 方案确定 ............................................................................................... 8 第3章 液压机本体结构设计 ........................................................................... 10 3.1液压缸设计 .......................................................................................... 10 3.1.1 活塞缸设计 ............................................................................... 11 3.1.2 柱塞缸设计 ............................................................................... 14 3.1.3 液压缸的损坏情况及原因分析 ............................................... 16 3.2 立柱与拉杆结构设计 ....................................................................... 18 3.2.1 立柱设计 ..................................................................................... 18 3.2.2 拉杆设计 ................................................................................... 21 3.3横梁结构和刚强度校核 ...................................................................... 23 3.3.1 上横梁的结构设计和校核 ..................................................... 23 3.3.2 活动横梁的结构设计与刚强度校核 ....................................... 27 3.3.3 下横梁的计算和校核 ................................................................. 28

结论 ..................................................................................................................... 31 参考文献 ............................................................................................................. 32 致谢 ..................................................................................................................... 32 附录1 .................................................................................................................. 33 附录2 .................................................................................................................. 41