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YD-B intelligent hydraulic transmission experimental platform

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Overview:
The YD-B intelligent hydraulic transmission comprehensive experimental platform is carefully designed based on the requirements of textbooks such as Hydraulic Transmission and Hydraulic and Pneumatic Transmission, and with reference to the suggestions of teachers and students. The experimental platform adopts advanced hydraulic component technology and innovative module design. Hydraulic components can be conveniently and quickly placed on T-shaped groove aluminum alloy panels, combined with advanced self sealing quick connectors, forming a convenient system combination for insertion and connection.
The YD-B intelligent hydraulic transmission comprehensive experimental platform is based on the YD-A hydraulic transmission comprehensive experimental platform, with the addition of relevant sensors, acquisition cards, testing software, etc. By using a data acquisition card to measure pressure, temperature, power, flow rate, speed, time, etc., testing and analysis software can analyze and process the data, save the test data, draw curves, and export experimental reports, thereby enabling the efficient development of related experimental courses in hydraulic transmission courses.
The YD-B intelligent hydraulic transmission comprehensive experimental platform is suitable for teaching experiments related to courses such as "Hydraulic and Pneumatic Transmission" and "Principles and Applications of PLC Programmable Controllers" in mechanical engineering, electromechanical integration, and automation majors in colleges, technical schools, and vocational schools. It can also serve as a comprehensive experimental platform for mechanical, electrical, and hydraulic integration. Through practical operation experiments and course design, students can accurately, vividly, and deeply understand and master the structure of hydraulic components, control principles and design methods of hydraulic circuits, etc. And master the functions, control principles, and programming skills of PLC programmable controllers.
This experimental platform is a newly designed intelligent hydraulic transmission experimental platform, which is a model for achieving full automation in hydraulic experiments
1、 Composition of the experimental platform
The experimental platform consists of several parts, including an experimental workbench, a hydraulic pump station, commonly used hydraulic components, an electrical control unit, and a data acquisition system.
1. Experimental workbench
Working power supply: three-phase four wire 380V, rated power: 1.5KW, rated pressure: 6.3-7Mpa
The experimental workbench consists of an iron body, an electrical cabinet, an oil pipe rack, a computer stand, and an aluminum alloy panel (T-shaped hook groove).
Made of high-quality cold-rolled steel plate material with a thickness of 2mm from Baosteel; Beautiful and sturdy, equipped with four high-quality shaft type universal wheels at the bottom, easy to move. The bottom of the cabinet is divided into two parts, with the left side used to place the pump station; On the right is a storage cabinet, used to store hydraulic components.
The experimental workbench is composed of an iron main body (made by one-time molding process) and an aluminum profile operation panel. The aluminum alloy profile structure with "T" grooves on the panel allows for easy and arbitrary installation of hydraulic components and overlapping of experimental circuits.
Workbench size: long × wide × Height=1500mm × 650mm × 1800mm (approximately 300kg after packaging)
Computer attachment: long × wide × Height=500mm × 650mm (approximately 10kg after packaging)
2. Hydraulic pump station
Rated working pressure of the system: 6.3Mpa. (Up to 7Mpa maximum)
⑴ Motor pump device (1 unit)
Variable vane pump -1 motor:
Variable vane pump: unidirectional, nominal displacement 6.67mL/r, volumetric efficiency 90%;
Motor: three-phase AC voltage, power 2HP 4P, speed 1450r/min;
⑵ Fuel tank: nominal volume 45L; Equipped with liquid level and oil temperature indicators, oil suction filters, air filters, etc
3. Common hydraulic components
Mainly hydraulic components produced by Beijing Huade Group, please refer to the configuration list for details.
Each hydraulic component is equipped with an oil transition bottom plate, which allows for easy and arbitrary placement of hydraulic components on aluminum alloy profile panels.
4. Electrical measurement and control unit
Programmable Logic Controller (PLC): Siemens S7-200 series, SR20, I/O port 20 points, relay output form, power supply voltage: AC 220V/50Hz, control voltage is DC24V, with manual, automatic, delay, sequence and other control functions, and equipped with measuring tools such as pressure gauge, flow meter, power meter, tachometer, and timer.
The standard brand is recommended by our company, and customers can also choose the brand PLC they need according to their own needs.
5. Data collection system
Computer: PIV host, 19 'LCD display, operating system Microsoft Win7 and above, display resolution 1600 * 900 and above
Data analysis software: Hydraulic transmission testing and analysis system V1.0
12 channel 16 bit high-precision analog data acquisition card
Pressure sensing transmitter, flow sensing transmitter, power sensing transmitter, temperature sensing transmitter, displacement sensing transmitter with an accuracy level of 0.5
2、 Experimental bench functions
1. Performance testing of commonly used hydraulic components:
1) Hydraulic pump performance testing
2) Static performance testing of relief valve
3) Performance testing of throttle valves and speed control valves
4) Performance testing of pressure reducing valves
5) Damping hole performance test (optional)
2. Hydraulic transmission basic circuit experiment: (22 types of circuits)
1) Single stage voltage regulation circuit
2) Two stage voltage regulation circuit
3) The pressure reducing circuit of the pressure reducing valve
4) Balance circuit of sequence valve
5) Unloading circuit of directional valve
6) Unloading circuit of pilot operated relief valve
7) Pressure maintaining and self-locking circuit of hydraulic control one-way valve
8) Differential circuit
9) Speed switching circuit for short circuiting of speed control valve
10) Throttle valve oil inlet throttle speed control circuit
11) Throttle valve return oil throttle speed control circuit
12) Throttling valve bypass throttling speed control circuit
13) Speed control valve oil inlet throttle speed control circuit
14) Speed control valve return oil throttle speed control circuit
15) Speed control valve bypass throttling speed control circuit
16) Unidirectional synchronous circuit controlled by throttle valve
17) Two position four way electromagnetic directional valve reversing circuit
18) Three position four way electromagnetic directional valve reversing circuit
19) Two position four way manual directional valve reversing circuit
20) The sequential action circuit of sequential valve control
21) Sequential action circuit controlled by proximity switch
22) Sequential action circuit controlled by pressure relay
3. Programmable Logic Controller (PLC) electrical control experiment, mechatronic and hydraulic integrated control experimental form.
1) Learning PLC instruction programming and ladder diagram programming
2) Learning and Using PLC Programming Software
3) Communication between PLC and computer, online debugging and monitoring
4) Optimization of PLC for Hydraulic Transmission Control
4. Equipped with excavator simulation mechanism (optional part) (provide on-site operation video of hydraulic excavator simulation mechanism)
1) Observation, disassembly and assembly of various components in hydraulic transmission, and learning and analysis of hydraulic control system principles.
2) Hydraulic excavator demonstration control experiment.
① Excavation operations, bucket and stick composite work experiments;
② The position and height of the boom can be adjusted simultaneously for unloading operations, bucket operation, and bucket operation.
5. Equipped with a loader simulation mechanism (optional) (provide on-site operation video of the hydraulic loader simulation mechanism)
1) Observation, disassembly and assembly of various components in hydraulic transmission, and learning and analysis of hydraulic control system principles.
2) Hydraulic loading machinery demonstration control experiment.
① Loading operation, after the bucket is loaded, the rocker arm cylinder extends to reverse the bucket and lift the boom;
② Unloading operation, bucket unloading (rocker arm retracted, causing bucket to turn), boom lowering.
6. Students design and assemble extended hydraulic circuit experiments independently; (Expandable to hundreds of experiments)
7. Programmable Logic Controller (PLC) electrical control experiment, mechatronic and hydraulic integrated control experimental form;
1) Learning instruction programming for PLC and ladder diagram programming
2) Learning and using PLC programming software
3) Communication between PLC and computer, online debugging and monitoring
4) Optimization of hydraulic transmission control by PLC
8. Intelligent data collection system experiment: can conduct experimental data collection, analysis, processing, real-time display, automatic generation of experimental curves, etc
9. Equipped with simulation software, it can simulate the overlap of hydraulic experimental circuits.
Virtual hydraulic configuration simulation software:
This configuration software can vividly display the flow direction of hydraulic oil, the working status of various internal valve cores of hydraulic valves, the working process of oil cylinders, and the working principle of pumps in real time on the computer screen.
10. Add hydraulic simulation software, virtual software circuit overlap and fault detection functions.