YD-A Industrial Hydraulic Transmission Comprehensive Test Bench
The YD-A Type Quick Connector Hydraulic Transmission Test Bench is designed in accordance with modern teaching features and the latest hydraulic transmission curriculum guidelines. It utilizes advanced Rexroth hydraulic components and unique modular design, creating an easy-to-assemble system. This meets the experimental teaching requirements for hydraulic transmission courses at universities, colleges, and vocational schools; aiming to cultivate students' hands-on, design, and comprehensive application skills, while enhancing their innovative design capabilities.
I. Key Features:
All systems utilize standard industrial hydraulic components, ensuring safety, reliability, and industrial proximity.
2. Fast and reliable connection methods with special sealed interfaces ensure convenient and quick assembly for experiments, oil-free disassembly, and cleanliness.
3. Precise measuring instruments, convenient measurement methods, easy to use, and reliable accuracy.
4. Utilizes Programmable Logic Controllers (PLCs) for communication with microcomputers to achieve electrical automation control, online programmable monitoring, and fault detection.
5. Enhanced configuration simulation software for added functionality.
6. Added hydraulic simulation software with virtual circuit connection and fault detection features.
II. Lab Bench Composition:
① Lab Workbench
Power Supply: 3-phase 4-wire 380V Rated Power: 1.5KW Rated Pressure: 6.3-7Mpa
The experimental workbench is composed of an iron frame, an electrical cabinet, an oil pipe rack, and an aluminum alloy panel (T-slot) etc. Made from 2mm thick Baosteel high-quality cold-rolled steel plates; it is aesthetically pleasing and sturdy, featuring four high-quality axially mounted swivel casters for easy movement. The cabinet is divided into two parts at the bottom; the left side is for placing the pump station, and the right side is a storage cabinet for storing hydraulic components.
Workbench
Main Dimensions: Length x Width x Height = 1500mm x 650mm x 1760mm (Approx. 260kg after packaging)
Optional Desk Attachment: 600mm x 650mm (W x D) x H (Approx. 20kg for computer attachment)
Standard Fault Setting and Diagnostic Training Function
Attached dimensions: 650×650×1500mm
② Hydraulic Pump Station
System rated working pressure: 6.3 Mpa (max. up to 7 Mpa).
Motor-pump unit (1 unit)
Variable pitch impeller pump - motor, 1 unit
Variable Vane Pump: Single-Direction, Nominal Displacement 6.67 mL/r, Volume Efficiency 90%
Motor: 3-phase AC voltage, 1.5KW power, 1450 rpm speed.
⑵. Fuel Tank: Nominal Capacity 40L; Equipped with level gauge, oil temperature gauge, oil suction filter, air filter, plug, etc.
③ Standard Hydraulic Components
Primarily featuring the renowned hydraulic brand, Beijing Huade Components, with stable operation and reliable performance. Configuration details are listed in the configuration sheet.
Each hydraulic component is equipped with an oil passage transition base, allowing for convenient and flexible placement on the aluminum molding panel.
④ Electrical Measurement and Control Unit
Programmable Logic Controller (PLC): Siemens latest S7-200 SMART SR20, I/O 20 points, relay output format; (Customers can select PLCs with different brand configurations to meet their specific needs)
Power Voltage: AC 220V/50Hz, control voltage is DC 24V, equipped with manual, automatic, and sequential control functions.
Section 3: Hydraulic Training Projects
I). Basic Hydraulic Transmission Circuit Experiment:
1. Single-stage pressure regulating loop
2. Two-stage pressure regulation loop
3. Pressure Reducing Valve Pressure Reduction Loop
4. Sequential Valve's Balance Circuit
5. Directional valve's unload circuit
6. Pilot-operated relief valve unload circuit
7. Pressure Holding Locking Loop for Liquid-Controlled One-Way Valve
8. Sequence action circuit controlled by pressure relay
9. Speed control valve short-circuit speed changeover circuit
10. Throttle Valve Oil Flow Throttle Speed Control Loop
11. Throttle valve return oil throttling speed control circuit
12. Throttle Valve Bypass Throttle Control Loop
13. Throttle valve oil flow throttling control loop
14. Throttle valve return oil throttling speed control circuit
15. Flow Control Bypass Throttle Speed Regulation Loop
16. Throttling valve-controlled unidirectional synchronous loop
17. Two-way four-way electromagnetic directional valve directional circuit
18. Three-way four-way solenoid directional valve reversing circuit
19. Two-way four-way manual directional valve reversing circuit
20. Sequential Action Circuit Controlled by Sequence Valve
21. Sequence action circuit controlled by proximity switch
II) Programmable Logic Controller (PLC) Electrical Control Experiment, integrated mechanical, electrical, and hydraulic control experiment format.
1. PLC instruction programming, ladder diagram programming study
2. Learning and usage of PLC programming software
3. Communication between PLC and computer, online debugging and monitoring
4. Optimization of PLC control for hydraulic transmission
Section III: Excavator Simulation Unit (Optional accessory)
1) Observation of the structural components of hydraulic transmission, disassembly, and analysis of the principles of hydraulic control systems.
2) Hydraulic Excavating Machinery Demonstration and Control Experiment.
Excavation operation, bucket and dipper rod working simultaneously in the experimental phase.
② The unloading operation, bucket arm, and bucket work simultaneously, with the large arm adjustable for height position.
IV), Loader Simulation Unit (optional accessory)
1) Observation of the structural components of hydraulic transmission, disassembly and assembly, as well as study and analysis of the principles of hydraulic control systems.
2) Hydraulic Loading Machinery Demonstration and Control Experiment
① Material loading operation, after the bucket is loaded, the boom cylinder extends to reverse the bucket, lifting the boom arm.
② Unloading operation, bucket unloading (arm retracted, allowing bucket to turn), boom lowering.
V) Enhanced with configuration simulation software, achieving functionality reinforcement
Six), Added hydraulic simulation software, virtual software circuit connection, and fault detection features.
