ABSTRACT
We all know, “practice is the sole criterion for testing truth.” Scientific experiment in human self-awareness and exploration
the law plays a crucial role in the process, can be said that no experiment would be no modern science. Hydraulic transmission
Mechanical Engineering Technology is moving a basic course. Hydraulic practice shows that the program only through theoretical
experimental combination of teaching to achieve good teaching. In order to meet the teaching of modern hydraulic
Requirements, this paper, a PLC-based control of multi-function hydraulic test stand. According to the hydraulic test stand
Purposes, the overall design of the hydraulic system program and the success of hydraulic simulation software for the test bed, the most
After the test-bed design control procedures. The multi-function Hydraulic Experiment station in the hydraulic has a wide range of teaching
Application.
This thesis on traditional and modern hydraulic Comprehensive Experimental Research to do a comprehensive overview of the development of hydraulic test stand to do a detailed analysis of trends, and the teaching of commonly used hydraulic components and hydraulic components and the basic hydraulic circuit principle of a detailed theoretical analysis, summarized, multi-function hydraulic test stand hydraulic circuit design has laid a reliable theoretical foundation for the application of simulation software provided. Optimization of each module will be designed multi-function hydraulic test stand hydraulic circuit diagram, and the function carried out a detailed description.
Comprehensive test-bed including electric hydraulic control, hydraulic control, etc., and its design and manufacturing will greatly ease the current shortage of laboratory equipment, and the backward status, while integrated electro-hydraulic control of the entire bench will play a very Hydraulic Experiment larger role in the hydraulic experiment teaching an important and indispensable component. Focus of this paper describes the comprehensive test-bed system of hydraulic components and component settings. All aspects of analysis and other experimental platform differences, highlight its comprehensive, its biggest advantage is that you can do in a variety of experimental platform, experimental, experiments done by the various experimental components and pipeline operators to design, Primarily designed around the principle and the experimental test bed to start the whole structure, and then supplemented by the electrical control hardware design.

Key words： test bed；hydraulic； electronic control； PLC

ABSTRACT
We all know, “practice is the sole criterion for testing truth.” Scientific experiment in human self-awareness and exploration
the law plays a crucial role in the process, can be said that no experiment would be no modern science. Hydraulic transmission
Mechanical Engineering Technology is moving a basic course. Hydraulic practice shows that the program only through theoretical
experimental combination of teaching to achieve good teaching. In order to meet the teaching of modern hydraulic
Requirements, this paper, a PLC-based control of multi-function hydraulic test stand. According to the hydraulic test stand
Purposes, the overall design of the hydraulic system program and the success of hydraulic simulation software for the test bed, the most
After the test-bed design control procedures. The multi-function Hydraulic Experiment station in the hydraulic has a wide range of teaching
Application.
This thesis on traditional and modern hydraulic Comprehensive Experimental Research to do a comprehensive overview of the development of hydraulic test stand to do a detailed analysis of trends, and the teaching of commonly used hydraulic components and hydraulic components and the basic hydraulic circuit principle of a detailed theoretical analysis, summarized, multi-function hydraulic test stand hydraulic circuit design has laid a reliable theoretical foundation for the application of simulation software provided. Optimization of each module will be designed multi-function hydraulic test stand hydraulic circuit diagram, and the function carried out a detailed description.
Comprehensive test-bed including electric hydraulic control, hydraulic control, etc., and its design and manufacturing will greatly ease the current shortage of laboratory equipment, and the backward status, while integrated electro-hydraulic control of the entire bench will play a very Hydraulic Experiment larger role in the hydraulic experiment teaching an important and indispensable component. Focus of this paper describes the comprehensive test-bed system of hydraulic components and component settings. All aspects of analysis and other experimental platform differences, highlight its comprehensive, its biggest advantage is that you can do in a variety of experimental platform, experimental, experiments done by the various experimental components and pipeline operators to design, Primarily designed around the principle and the experimental test bed to start the whole structure, and then supplemented by the electrical control hardware design.

Key words： test bed；hydraulic； electronic control； PLC

1．1课题研究的背景  ．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．1

1．2课题研究的内容  ．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．1

1．3课题研究的目的与意义  ．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．2

1．3．1电液控综合实验台研究的目的与意义  ．．．．．．．．．．．．．．．．．2

1．3．2毕业设计的目的与意义  ．．．．．．．．．．．．．．．．．．．．．．．．．．．．2

2.1  在实验台上可以完成的实验 ．．．．．．．．．．．．．．．．．．．．．．．．．．．．3

2.2液压系统原理．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．3

2.2.1  液压系统中工作压力形成原理实验  ．．．．．．．．．．．．．．．．．．．．3

2.2.2  液压泵性能实验 ．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．8

2.2.3 溢流阀性能实验 ．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．11

2.2.4  节流调速回路性能实验 ．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．17

2.2.5 比例压力阀的性能实验．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．22

3.1 液压泵的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．27

3.1.1 定量泵的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．27

3.1.2变量泵的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．28

3.2 电动机的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．28

3.3 液压阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．28

3.3.1溢流阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．29

3.3.2电磁换向阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．29

3.3.3调速阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．30

3.3.4节流阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．30

3.3.5单向阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．30

3.3.6电液比例溢流阀的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．31

3.4 传感器的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．34

4.1实验台总体外形尺寸的确定．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．35

4.2实验台上部板面设计．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．36

4.3实验台附件设计．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．37

4.4实验台材料的选择．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．38

4.5实验台强度设计．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．39

4.6实验台强度校核．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．40

4.7实验台外观设计．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．43