摘要：在高压、高速、大功率的制造行业，机、电、液一体化的设备在整个机械设备中所占的比重越来越大。液压实验台作为一种检测液压元件的必须设备，可对各种液压元件进行测量。本毕业设计主要任务是设计一台可对泵、阀做多种试验的多功能试验台，其液压系统考虑具有能量回收功能。课题要求设计液压系统，并对之分析论证，主要是体现液压系统的工作效率及部分液压元件的工作特性。
 本文在详述国内外液压试验台研究现状的基础上，对液压系统进行了设计，包括对液压泵、电机和液压元件的设计、计算和选型，以及对液压系统的功能和特性的分析。本试验台能够完成液压系统的工作效率及部分液压元件的工作的特性的测试，测试过程实现自动化和信息化，提高了工作效率。36399
本文研制出的液压试验台，能满足高精度、高效率、高稳定性的测试要求，测试结果客观、可靠。
毕业论文关键词：液压系统；液压试验台；能量回收
Design of hydraulic system medium flow hydraulic test Abstract:   In the high-voltage, high-speed, high-power manufacturing industry, machine, electricity, liquid integration equipment in the entire machinery and equipment in the proportion of growing. Hydraulic test rig as a hydraulic component of the device must be hydraulic pump and hydraulic motor and other hydraulic components for measurement. The main task of this graduation design is to design a multifunctional test bench for many kinds of pump and valve, and its hydraulic system has the function of energy recovery.. The design of the hydraulic system is required, and the analysis and demonstration are mainly the working efficiency of the hydraulic system and the working characteristics of the hydraulic components.
   This paper in details on domestic and foreign hydraulic test bench research present situation foundation, the hydraulic system design, including the design of hydraulic pump, motor and hydraulic components, calculation and selection, and the functions and characteristics of the hydraulic system analysis. This test rig can complete the work efficiency of hydraulic system and the characteristics of hydraulic components, the testing process can realize automation and information, and improve the working efficiency.
The hydraulic test rig developed in this paper can meet the test requirements of high accuracy, high efficiency and high stability, and the test results are objective and reliable.
Key words: hydraulic system; hydraulic test bench ; Energy recovery
目  录
1  绪论1
1.1  本课题的研究背景1
1.2  课题研究的内容和意义1
2  液压系统方案的分析和确定2
2.1  被试泵的效率测试2
2.2  液压系统总体方案确定2
2.3  功率回收系统方案的比较分析3
2.3.1  电功率回收液压系统分析 4
2.3.2  机械补偿功率回收液压系统分析 5
2.3.3  液压补偿功率回收液压系统分析 6

2.4  功率回收系统基本原理及特性要求8
2.4.1  功率回收系统的基本原理 8
2.4.2  液压泵试验系统特性要求 8
3  液压系统方案设计9
3.1  系统加载压力调节方式确立9
3.1.1  变频调速调节方式 10
3.1.2  变量马达调节方式 11
3.1.3  外部补油调节方式 12
3.2  液压系统调速回路的确定13
3.2.1  节流调速回路 14
3.2.2  容积节流调速回路 15
3.2.3  容积调速回路 16
3.3  系统的组成16
3.4  液压系统的工作原理17
3.5  液压泵、电机的选择18
3.5.1  被试液压泵的选择 18
3.5.2  电动机的选择 18
3.6  液压元件的选择19 中等流量液压试验台液压系统设计+CAD图纸:http://www.751com.cn/jixie/lunwen_34821.html