![](https://csdnimg.cn/release/download_crawler_static/87968181/bg3.jpg)
本科机械毕业设计论文 CAD 图纸 QQ 401339828
目录
摘要 ................................................................................................................................................................1
Abstract ...........................................................................................................................................................2
1 绪论 ............................................................................................................................................................1
1.1 液压技术..........................................................................................................................................1
1.2 液压传动与控制系统简介.............................................................................................................2
1.2.1 传动类型及液压传动定义 .................................................................................................2
1.2.2 液压系统的组成部分..........................................................................................................2
1.2.3 液压系统的类型..................................................................................................................3
1.2.4 液压技术特点......................................................................................................................3
1.3 试验机的发展..................................................................................................................................4
1.4 课题主要设计内容..........................................................................................................................5
2 疲劳试验机液压系统设计..........................................................................................................................5
2.1 原理图及技术参数..........................................................................................................................5
2.1.1CAD 原理图............................................................................................................................5
2.1.2 主要技术参数:..................................................................................................................6
2.2 负载特性及元件选择......................................................................................................................7
2.2.1 负载特性..............................................................................................................................7
2.2.2 泵和缸的选择......................................................................................................................8
2.2.3 电液伺服阀的选择..............................................................................................................8
3 阀类元件及辅助元件计算与选择............................................................................................................10
3.1 要求.................................................................................................................................................10