目 录
1 压力机概述---------------------------------------------------------------1
1.1 压力机发展的概况 ---------------------------------------------------1
1.2 压力机工作原理 -----------------------------------------------------2
1.2.1 压力机功能简介 -----------------------------------------------------------------------------------------2
1.2.2 压力机的工作原理简介 ------------------------------------------------------------------------------3
2 液压机总体结构设计 ------------------------------------------------------------------------------------------------------4
2.1 压力机总体设计结构及要求 ---------------------------------------------------------------------------------4
2.2 立柱的强度计算---------------------------------------------------------------------------------------------------4
2.3 横梁的强度计算---------------------------------------------------------------------------------------------------5
2.4 油箱的设计 -----------------------------------------------------------------------------------------------------------5
3.压力机的液压系统设计--------------------------------------------------------------------------------------------------6
3.1 液压传动的优缺点 ------------------------------------------------------------------------------------------------6
3.2 设计参数和应满足的条件-------------------------------------------------------------------------------------7
3.2.1 负载分析初步确定各工况的负载和速度 ----------------------------------------------------8
3.2.2 液压介质的选择 -----------------------------------------------------------------------------------------8
3.3 液压系统的设计----------------------------------------------------------------------------------------------------9
3.3.1 确定液压系统方案--------------------------------------------------------------------------------------9
3.3.2 液压原理图的拟定 -----------------------------------------------------------------------------------11
4 液压系统的计算和液压元件的选择 -----------------------------------------------------------------------------12
4.1 液压缸的选择-----------------------------------------------------------------------------------------------------12
4.1.1 主缸的选择 -----------------------------------------------------------------------------------------------12
4.1.2 顶出缸的选择--------------------------------------------------------------------------------------------13
4.2 液压泵站 -------------------------------------------------------------------------------------------------------------17
4.2.2 液压泵的选择--------------------------------------------------------------------------------------------18
4.2.3 液压泵的压力--------------------------------------------------------------------------------------------19
4.3 活塞---------------------------------------------------------------------------------------------------------------------20
4.3.1 活塞杆的计算--------------------------------------------------------------------------------------------20
4.3.2 活塞的材料及要求 ------------------------------------------------------------------------------------22
4.3.3 活塞杆的设计与计算 --------------------------------------------------------------------------------22
4.3.4 活塞杆材料及技术要求-----------------------------------------------------------------------------23
4.4 电动机的选择------------------------------------------------------------------------------------------------------24
4.5 液压阀的选择------------------------------------------------------------------------------------------------------24
4.5.1 方向控制阀的选择 -----------------------------------------------------------------------------------24
4.5.2 压力控制阀的选择 ------------------------------------------------------------------------------------24
4.5.3 流量控制阀的选择 ------------------------------------------------------------------------------------24
4.6 辅助元件的设计 --------------------------------------------------------------------------------------------------25
4.6.1 滤油器的选择-------------------------------------------------------------------------------------------25
4.6.2 油管尺寸的确定----------------------------------------------------------------------------------------25
4.6.3 油箱容量的选择----------------------------------------------------------------------------------------26
5 液压系统性能验算--------------------------------------------------------------------------------------------------------29
6 总结 ------------------------------------------------------------------------------------------------------------------------------31
参考文献 --------------------------------------------------------------------------------------------------------------------------32
