目录

   

摘 要.................................................................................................................................................3
一．设计目的、要求及题目............................................................................................................4

㈠设计的目的............................................................................................................................4
㈡设计的要求............................................................................................................................5

——

二．负载

工况分析....................................................................................................................6

1. 工作负载.................................................................................................................................6
2. 摩擦阻力.................................................................................................................................6
3. 惯性负荷.................................................................................................................................6

三．绘制负载图和速度图................................................................................................................7
四．初步确定液压缸的参数............................................................................................................8

1

 

． 初选液压缸的工作压力。................................................................................................8

2．计算液压缸尺寸。..............................................................................................................8
3．液压缸工作循环中各阶段的压力、流量和功率的计算值如下表 2 所示：...............9
4．液压缸的工况分析............................................................................................................11

五．拟定液压系统图......................................................................................................................14

1．选择液压基本回路............................................................................................................14

六．选择液压元件..........................................................................................................................15

1．确定液压泵的容量及电动机功率...................................................................................15
２．控制阀的选择..................................................................................................................15
3．确定油管直径....................................................................................................................17
4．确定油箱容积....................................................................................................................17

 

七． 液压系统的性能验算............................................................................................................17

  

１． 液压系统的效率...........................................................................................................17

  

２． 液压系统的温升...........................................................................................................18

致　　谢...........................................................................................................................................20