Transparent Hydraulic Test Bench 5988SAOZ

I. Main Features:
1. Test Bench Structure: The test bench is constructed of sheet metal with an internal rust-proof treatment and a matte plastic-sprayed surface, creating an elegant and beautiful finish. The aluminum alloy panel is anodized.
★2. Transparent Valve Body:
A. Made of optical-grade injection-molding PMMA glass imported from Asahi Kasei (PMMA 80N) from Japan. The dimensions are comparable to the actual valve. This material has a light transmittance of 93%, a temperature resistance of -30°C to +70°C, and SGS/ROHS environmental certification. The angle of view is 15°. It offers excellent heat resistance, mechanical strength, weather resistance, and chemical resistance. It will not yellow, crack, or deform within 20 years of use in a chemical-free environment. This allows teachers and students to clearly observe the internal structure and oil circuitry of the hydraulic transmission.
B. The solenoid valve is designed with an aluminum alloy heat sink to effectively prevent premature aging and leakage caused by overheating. ★3. Connection Method: Automatically locked, leak-proof quick-connect fittings + imported sealing gaskets and seals. The fittings self-lock when disengaged, ensuring safe and convenient use. The imported seals offer excellent sealing performance and are made of durable materials. This makes hydraulic circuit assembly simpler, faster, cleaner, and more convenient for teachers and students during experiments.
★4. Software:
① Configuration Simulation Software: This software monitors the valve core movement, fluid flow, pressure, actuator operation, and PLC I/O interface inputs and outputs within the circuit. Various monitoring conditions are displayed visually on the monitor screen using color-coded images and text, providing a clear and intuitive interface.
② Festo Hydraulic Simulation Software: This software provides CAI courseware for hydraulic circuit simulation design and practical training. It not only demonstrates the structure of hydraulic valves, but also allows for hydraulic circuit design, parameter adjustment, and simulated operation. Students not only understand the working principles of pressure reducing valves but also gain a hands-on experience.
★5. System Safety: The hydraulic components are rated for a working pressure of 0.8 MPa, making this a safe low-pressure experimental system. The power supply features leakage protection. It automatically shuts off the main power supply if leakage current exceeds 30mA, phase loss, or other conditions occur. All control circuits operate at a safe 24V DC voltage.
6. Diversified control options include software control, relay control, time relay control, and manual control.
★II. Experimental Content
1. Basic Hydraulic Principles Experiment
2. Ten Basic Hydraulic Circuits with Over 100 Expansions
(1) Pressure Regulation Control Circuit
(2) Pressure Reducing Circuit
(3) Unloading Circuit
(4) Pressure Relief Circuit
(5) Speed ​​Control Circuit
(6) Synchronization Circuit
(7) Reversing Circuit
(8) Locking Circuit
(9) Buffer Circuit, etc.)
III. Main Components of the Experimental Bench
The experimental bench consists of a test bench frame, a hydraulic pump station, common hydraulic components, and an electrical control unit.
1. Experimental Bench
The experimental bench frame consists of an iron main frame, a computer stand, and an aluminum operating panel.
Workbench dimensions: length × width × height = 1500mm × 700mm × 1850mm (package weight is approximately 200kg), mounting surface with “T” groove aluminum alloy profile structure
2 Hydraulic pump station
System rated working pressure: 0.8 MPa.
(1) Motor-pump unit (unit)
The oil pump is flange mounted, effectively reducing the operating noise to less than 40 decibels. The pump can be any of the gear pumps, cycloid pumps, vane pumps, etc. Motor: DC motor, power 350W, speed 0-1450r/min; DC speed regulator for speed control.
(2) Oil tank: Nominal capacity 35L; equipped with liquid level and oil temperature indicators, oil suction and return filters, safety valve, etc.
3. Working power supply: With leakage protection, output voltage 380V/220V, power supply will be cut off if the ground leakage current exceeds 30mA; electrical control uses DC 24V power supply and has overvoltage protection to prevent damage to the equipment due to improper operation. 4. The display panels in the hydraulic training room include:
1. Installation of a double-acting, single-piston-rod hydraulic cylinder;
2. Operating principle of an external gear pump; schematic diagram of an axial clearance compensation device; schematic diagrams of a floating sleeve-type clearance compensation device; schematic diagrams of a floating side plate-type clearance compensation device; schematic diagrams of a flexible side plate-type clearance compensation device; installation of a double-acting, single-piston hydraulic cylinder; cylinder body and piston-cylinder mounting methods; operating principle of a gear pump; oil trapping in a gear pump; dead volume diagram; minimum and maximum dead volume; oil trapping relief grooves in a gear pump; symmetrical double rectangular relief grooves; asymmetrical double rectangular relief grooves; and simplified diagrams for calculating differential pressure and shear flow leakage. Dimensions: 600*800mm-1200*800mm;
Materials:
1. The display panel’s middle layer is made of outdoor-grade PVC, the inner layer is a composite support board, and the outer layer is PMMA80N high-transparency acrylic sheet.
2. Mounting Style: The outer frame is made of matte aluminum alloy, with holes punched on all four sides for mounting. (One set per training room)

IV. Equipment List
Laboratory Bench:
Laboratory Bench (Aluminum Alloy T-Slot Panel) with U-Grooved Oil Pan (1500mm x 700mm x 1850mm) (1 set) Made of 1mm-2mm thick metal plate;
With high-quality roller-type universal casters
Transition base plate mold (1 set) made of self-made profiles and wear-resistant and corrosion-resistant materials, attached to the valve
Universal casters (2.5mm) made of high-quality steel with self-locking function; 4 roller-type bearings installed on the bottom of the laboratory bench
Aluminum Alloy Panel (1.5mm) with T-Slots, for interfacing with the transition base plate (1 set)

Pump Station:
Oil Pump Motor (1 DC motor, Power: 350W, Operating Voltage: 220V, Fujian, China)
Gear Oil Pump (1 industrial pump, Rated Displacement ≥ 6ml/rev, Rated Pressure ≥ 2.5MPa, China Huaneng 35L oil tank; comes with a safety valve and oil filter.
Oil filter (oil level gauge, Taiwan).
Oil temperature and level gauge (oil level gauge, Taiwan).

Electrical:
Programmable Controller (PLC), Mitsubishi, 1 relay output type, 20 points, Japan.
PLC download cable, Mitsubishi, Japan.
Motor speed control circuit, Huaneng, 1 set, DC speed control, China Huaneng.
Relay sets, 2 relay sets, 4 NONC, Japan OMRON.
Time Relays:
Time relay set, one normally closed switch, one normally open switch, one pause switch.
Operating Voltage: AC220V, one set, DC24V, three-digit LED display, 0-999s output. Shanghai.

Transparent Hydraulic Components:
Double-acting, single-rod cylinder: 1. Valve body is made of imported plexiglass.
2. Valve core has high light transmittance and will not yellow, crack, or deform within 10 years of normal use.
3. Solenoid valve features a unique heat dissipation module, completely eliminating the hydraulic oil leakage problem caused by solenoid valve body expansion due to heating. Double-acting, double-rod cylinder (1) Spring return cylinder (1) Booster cylinder (1) 4-way, 3-position solenoid directional control valve (O) (1) 4-way, 3-position solenoid directional control valve (H) (1) 4-way, 3-position solenoid directional control valve (P) (1) 4-way, 3-position solenoid directional control valve (Y) (1) 4-way, 3-position solenoid directional control valve (M) (1) 4-way, 2-position solenoid directional control valve (1) 3-way, 2-position solenoid directional control valve (1) Hydraulic control check valves (2) Speed ​​regulating valve (1) Relief valves (2) Sequence valves (2) 4-way valves (2) Inlet valve (1) Outlet valve (1) Throttle valves (2) Check valves (2) Pressure relay (1) Accessories: Transparent hydraulic hose lockout quick connector (1 set) Imported oil pipe (3) Glycerin type pressure gauges (3) Proximity switches (4) 2-wire, 2-wire, 2-wire, Shanghai, China 30 liters of genuine red aviation red hydraulic oil, red for easy visualization of the oil circuit.
One set of imported male connector seals, quick-plug, self-locking.
One set of imported female connector seals, quick-plug, self-locking.
Materials:
PLC programming software (CD-ROM), Mitsubishi (Japan).
Hydraulic simulation software, nearly twenty KingView configuration circuits.
Electronic hydraulic simulation software 3.6, Chinese version, Festo (Germany).
Pneumatic technology tutorial software, Chinese version, components and test questions. SMC (Japan).
Experimental operation manual, paper version.
Transparent hydraulic demonstration system instruction manual, paper version.

Wearable parts:
Gaskets, approximately 6 types, totaling 25, imported from Germany, German oil control.
Seals, connectors, totaling 15, imported from Germany, German oil control.
Large buttons, 2 Yuanda (Shanghai).
Small buttons, 2 Yuanda (Shanghai).
Electrical signal plugs and sockets, 4 sets, Dell (Zhejiang).
Tissue tape, 4 rolls, Shanghai.
Seals, several, Dutch, Dutch, Dutch, Dutch.
Tools:

10″ adjustable wrench

Shanghai Gong, etc.

14-17 open-end wrench

14-17 rubber hammer with wooden handle

10mm Allen wrench

8mm Allen wrench

6mm Allen wrench

5mm Allen wrench

4mm Allen wrench

3mm Allen wrench

2.5mm Allen wrench

2mm Allen wrench

1.5mm Allen wrench

3x75mm Phillips screwdriver

5x75mm Phillips screwdriver

6x100mm Phillips screwdriver

3x75mm slotted screwdriver
5 x 75mm slotted screwdriver (1 piece)
6 x 100mm slotted screwdriver (1 piece)
6 x 150mm slotted screwdriver (1 piece)
Needle-nose pliers (1 pair)
Other items:
1 pack of oil-absorbing cotton cloths
5 cleaning towels