High‑Performance Hydraulic Transmission & PLC Training Device, Industrial Single‑Sided Didactic Bench for Vocational Education Laboratory Teaching

Hydraulic Transmission Technical Parameters and Specifications

This device integrates real hydraulic components (Rexroth), various actuator modules, a relay control unit, and PLC programming and control technology. The hydraulic components are self-contained modules, each equipped with a base plate with spring-loaded pins. During training, various hydraulic system circuits can be assembled on a universal aluminum plate. The motor and pump are integrated with bearings and then fixed to the oil tank. An air cooler provides constant cooling. The oil tank and control panel are housed separately. The device features three-phase leakage protection, and the DC power supply has overcurrent protection. The system is rated for 6.3 MPa.

Main technical parameters

Input Power: Three-phase, five-wire, 380V, ±10% tolerance, 50Hz. A leakage protector provides the control panel with main power. A grid voltage meter monitors the grid voltage, with three indicator lights and an illuminated fuse. The control panel's power supply is controlled by a start/stop switch and includes leakage protection.

Device Capacity: <2kVA

Variable displacement vane pump: pressure 7 MPa, discharge 8 mL/r, speed 1420 rpm.

The PLC uses a Mitsubishi FX1S-20MR main unit with 12 digital inputs and 8 digital outputs.

It is equipped with control modules: power supply module, relay control module, PLC control module, etc.

Motor: rated voltage 380 V, rated power 0.75 kW, insulation class B.

Hydraulic pump unit: maximum capacity 70 L. 2 mm steel plate, variable displacement vane pump and motor, oil temperature and level gauge, cleaning cover, air filter, shock-resistant stainless steel pressure gauge, and L-HL46 hydraulic oil. Laboratory Bench External Dimensions: 1500mm*1000mm*1700mm*

Completable Training Projects

Performance Training of Common Hydraulic Components

Training on Basic Hydraulic Transmission Circuits, Such as Pressure Control Circuits, Speed Control Circuits, Direction Control Circuits, Locking Circuits, Dual-Cylinder Working Circuits, and Hydraulic Motor Application Circuits

--Dozens of Hydraulic Circuit Training Can Be Completed (Students Can Also Design and Build Other Circuits). Typical Training Projects are as follows:

• Single-Stage Pressure Regulating Circuit
• Multi-Stage Pressure Regulating Circuit
• Pressure Reducing Circuit
• Unloading Circuit
• Meter-In Speed Regulating Circuit
• Meter-Out Speed Regulating Circuit
• Meter-Bypass Speed Regulating Circuit
• Fast Movement Circuit for Hydraulic Cylinder Differential Connection
• Short-Circuit Speed Shifting Circuit for Speed Control Valves
• Speed Shifting Circuit for Series Speed Control Valves
• Speed Shifting Circuit for Parallel Speed Control Valves
• Directional Reversing Circuit Using a Reversing Valve
• Locking Circuit Using an "O"-Type Functional Reversing Valve
• Locking Circuit Using a Hydraulically Controlled Check Valve
• Sequential Action Circuit Controlled by a Sequence Valve
• Sequential Action Circuit Controlled by a Pressure Relay
• Sequential Action Circuit Controlled by a Travel Switch