Product Introduction
All the transparent hydraulic components on this experimental platform are made of imported transparent acrylic glass using modern processing technology, allowing for clear and intuitive observation and understanding of the internal structure and working process of the hydraulic components and the hydraulic transmission circuit.
This system can teach the structure, working principle and performance of individual hydraulic components, conduct experimental demonstrations of common basic circuits, and also be used for course design and graduation projects of hydraulic systems.
Product Features
1. Experimental table structure: The main body is made of 70*70 mm special aluminum profile with a beautiful and elegant surface oxidation process . The tabletop is made of a whole steel plate with a reserved oil drainage groove, which is sturdy, durable and easy to clean . In order to meet the needs of expandable experiments, an extra-large panel (aluminum "T" shaped panel size) is provided so that two groups of students can conduct their own experiments.
2. Valve body material: Made of imported Japanese Asahi Kasei (PMMA 80N) optical-grade injection-molded PMMA acrylic glass, with dimensions consistent with the actual product. This material has a light transmittance of 93%, temperature resistance of -30°C to +70°C, SGS/ROHS environmental certification, and a 15° angle. It boasts excellent heat resistance, good mechanical strength, weather resistance, and chemical resistance; it will not yellow, crack, or deform even after 10 to 20 years of use in a chemical-free environment; and it allows teachers and students to clearly observe the internal structure and oil circuit of the hydraulic transmission device.
3. Solenoid Valve: Based on the characteristics of solenoid valves (as the working time of the solenoid valve increases, the temperature will gradually rise, causing a thermal effect on the transparent valve body made of plexiglass, and over time, changes in the local physical properties of the material, resulting in leakage), our technical department has designed a unique heat dissipation module to control the temperature of the heat-generating part of the valve body below 60 degrees Celsius, thereby avoiding leakage incidents caused by this.
4. Connection method: The closed-type leak-proof quick-connect coupling adopts the double-opening and closing hydraulic quick-connect coupling (carbon steel with chrome plating) with the production standard JB/ZQ4434-86. The pressure range is 5000PSI, the sealing ring material is nitrile rubber (NBR), and the pressure resistance temperature range is -20℃ to +120℃. It has good sealing performance, long service life , and is simpler, faster, cleaner and more hygienic in the assembly process of experimental circuits.
5. Modular components: Each hydraulic component is an independent module, equipped with a base plate for easy installation. Various experimental circuits can be built on the "T"-shaped aluminum alloy profile plate, and the operation is quick and simple.
6. Scalable Experimentation: Providing strong scalability while ensuring equipment stability, the large aluminum alloy panel assembly platform provides the necessary hardware foundation for expansion.
This equipment meets the three levels of experimental teaching requirements: advanced technology, openness, and scalability. It fully embodies the multi-functionality of mechatronics in teaching.
A. While ensuring the existing experiments are carried out, pneumatic hardware can also be assembled to conduct corresponding pneumatic experiments;
B. With hardware support, extended experiments such as feeding mechanisms, robotic gripping mechanisms, and excavator mechanisms can also be carried out.
7. Easy Maintenance: The easy-to-maintain design minimizes maintenance and repair workload. Components are stored separately before and after oil removal, and an oil return tray allows for resource recycling and reuse. Due to its unique protective and easy-to-maintain design, very few components require maintenance, and maintenance is convenient and simple during operation. A single maintenance session takes no more than one hour, requiring minimal workload and infrequent maintenance. This significantly improves the system's flexibility, advanced technology, safety, stability, manageability, and scalability.
8. System Safety Performance: The hydraulic components can withstand a maximum pressure of 1.2 MPa, with a rated working pressure of 0.8 MPa, making it a safe low-pressure experimental system. The power supply is equipped with leakage protection; in case of leakage (leakage current to ground exceeding 30mA, automatic power cut-off) or phase loss, the main power supply is automatically disconnected. All control circuits use a safe 24V DC voltage.
9. Diversified control: PLC control, relay control, time relay control, manual control, etc.
Technical Specifications
1. Input power supply: Single -phase three- wire system ~ 22 0V±10% 50Hz
2. Temperature: -5℃～+40℃, relative humidity <85%
3. Device capacity: <1.5KVA
4. External dimensions : 1600mm * 700mm * 1760mm
Practical Training Projects
1.Basic Experiments on Hydraulic Principles
2.PLC Electrical Control Experiments, Mechatronichydraulic Integrated Control Experiment Mode
(1) Learning of PLC instruction programming and ladderdiagram programming
(2) Study and application of PLC programming software
(3) PLCcomputer communication, online debugging and monitoring
(4) Optimization of hydraulic transmission control by PLC
10 categories with more than 30 basic hydraulic circuits, expandable to over 90 circuits
⑴ Pressure Regulation Control Circuits
Pressure setting circuit of relief valve
Lowpressure limiting circuit by relief valve
⑵ Unloading Circuits
3. Unloading circuit of 3position 4way directional valve
4. Unloading circuit of 2position 2way valve
5. Unloading circuit with relief valve
⑶ Pressurestabilizing Circuits
6. Pressureholding circuit with pilotoperated check valve
⑷ Pressurerelief Circuits
7. Pressurerelief circuit with throttle valve
8. Pressurerelief circuit of 3position 4way valve
9. Pressurerelief circuit of sequence valve
⑸ Speed Regulation Circuits
10. Inletoil throttlespeedregulation circuit
11. Returnoil throttlespeedregulation circuit
12. Bypass throttlespeedregulation circuit
13. Speedregulation valve controlled speedregulation circuit
14. Differential connection speedincreasing circuit
15. Deceleration circuit with solenoid valve and speedregulation valve
16. Differential circuit controlled by 2position 3way valve
17. Secondary feed circuit
18. Differential operation switching circuit
⑹ Synchronization Circuits
19. Synchronization circuit controlled by throttle speedregulation valve
20. Doublecylinder synchronization circuit
⑺ Directional Control & Sequence Circuits
21. Directionchanging circuit controlled by directional valve
22. Directionchanging circuit controlled by hydraulicoperated directional valve
23. Sequence circuit controlled by travel switch
24. Sequence circuit controlled by pressure relay
25. Manual directionalcontrol circuit of 3position 4way valve
⑻ Lockup Circuits
26. Lockup circuit by directional valve
27. Lockup circuit with pilotoperated check valve
Main Components of the Experimental Platform
The experimental platform consists of several parts, including the experimental platform frame, hydraulic pump station, common hydraulic components, main unit box, etc.
1. Experimental stand:
The experimental bench measures 1600mm (L) * 700mm (W) * 1760mm (H) . The main structure is constructed entirely of high-performance anodized aluminum profiles and one-piece die-cast aluminum frame components. These components are die-cast ( non-welded ) and then machined, shot-blasted, sandblasted , and electrostatically powder-coated . Installation is convenient and quick, allowing users to DIY assemble it themselves. The tabletop columns are made of industrial aluminum profiles with anodized surface. The cross-section dimensions are 70*70mm, with grooves on all four sides, approximately 8mm wide , and molded plastic end caps . The tabletop uses a 25mm E1 grade melamine-faced panel with a supporting frame capable of bearing at least 200kg . Storage cabinets are included for storing training boxes and other equipment. The cabinets are equipped with four high-strength, universal, brakeable PU casters for easy movement. The overall design of the experimental bench is simple yet sophisticated, exuding a high-end and modern aesthetic that aligns with contemporary product trends.
The two table legs at the back of the experimental table extend upwards, forming a training operation screen with a triangular beveled sheet metal frame on the side and an aluminum alloy operation panel with T-slots. During training, the pneumatic control module is fixed , etc. The experimental host box is installed on the top of the experimental table frame. The host box provides time relays, programmable controllers, control buttons, proximity switches, DC power supplies, etc. for the experiment.
2. Main unit case:
Safety protection: External power is input through a leakage current switch and a fuse, and then supplied to the experimental platform.
The pumping station is equipped with an emergency stop button and a start/stop button to ensure safe operation. It is also equipped with a digital tachometer and a speed controller.
Time relay module: Provides a set of digital display time relays from 0 to 999 seconds , and the normally open and normally closed times can be set according to experimental needs.
Relay control module: Provides two relay control modules.
Programmable Logic Controller (PLC): Mitsubishi FXS20MR series, 20 I/O ports, relay output, power supply voltage: AC 220V/50Hz, control voltage: DC24V, equipped with manual, automatic, and sequential control functions.
3. Hydraulic pump station
The system's rated working pressure is 0.8 MPa, with a maximum of 1.5 MPa.
(1) Motor-pump unit (unit)
The pump can be any type, such as a gear pump, cycloidal pump, or vane pump. Motor: DC motor with stepless speed regulation from zero. Power: 350W, speed controlled by a DC speed controller. Built into the experimental platform, noise level ≤48dB at a distance of 1.5m from the hydraulic platform.
(2) Oil tank: nominal volume 25L; equipped with level and temperature indicators, oil suction and return filters, safety valve, etc.
