The hydraulic lifting system Hydraulic Station (also known as the Hydraulic Power Unit, HPU) is the core device that provides stable hydraulic power for various lifting equipment. It is widely used in industries, logistics, construction, and special equipment fields. It drives the Hydraulic Pump through a motor or an engine, outputs high-pressure oil to control the actuator (such as a Hydraulic Cylinder) to achieve the smooth lifting, positioning, and stabilization of heavy objects.
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## **1. Core Functions**
- **Power Output**: Converts electrical/mechanical energy into hydraulic energy, providing stable pressure and flow.
- **Lifting Control**: Achieves lifting, lowering, and mid-process stopping through the Directional Control Valve.
- **Safety Protection**: Integrates overflow valves, balance valves, etc., to prevent overloading, loss of pressure, or uncontrolled descent.
- **Energy Efficiency Optimization**: Optional variable pumps or accumulators can be used as auxiliary equipment to reduce energy consumption.
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## 2. Typical Components
| **Component** | **Function** | |------------------|-------------------------------------------------------------------------|
| **Power Unit** | Motor/Engine + Hydraulic Pump (Gear Pump, Piston Pump, etc.), providing system pressure oil. |
| **Control Valve Assembly** | Directional Valve (manual/electromagnetic), relief valve, balance valve, etc., control the flow direction and pressure of the oil circuit. |
| **Fuel tank** | Stores fuel, dissipates heat, filters the fuel, equipped with a liquid level indicator and an air filter. |
| **Actuating Mechanism** | Hydraulic cylinder (single-acting/double-acting) or Hydraulic Motor, used to drive the load to rise and fall. |
| **Auxiliary Components** | Pressure gauge, filter, accumulator, cooler (essential for high-power systems). |
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## 3. Main Types
- **Fixed Hydraulic Station**: Used in fixed locations such as factory production lines and large lifting platforms.
- **Mobile Hydraulic Station**: Integrated into vehicles or portable devices (such as rescue lifting vehicles, climbing platforms).
- **Explosion-proof Hydraulic Station**: Suitable for flammable and explosive environments (Ex d/IIC T4 certification).
- **Miniature Hydraulic Power Unit**: Compact design with low flow rate, used in medical equipment and small lifting machines.
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## 4. Key Performance Parameters
- **Rated Pressure**: 10 - 35 MPa (selected according to load requirements).
- **Flow Range**: 5 - 200 L/min (determines lifting speed).
- **Motor Power**: 0.5 - 30 kW (matched with pump displacement).
- **Control Method**: Manual buttons, remote control, PLC automatic control.
- **Protection Grade**: IP65 (dust and water protection), low-temperature start (-20°C), etc.
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## 5. Application Scenarios
- **Industrial Sector**: Automobile lifting machines, material lifting on production lines, mold replacement devices.
- **Logistics and Warehousing**: Hydraulic forklifts, shelf lifting platforms, loading and unloading bridges.
- **Construction Engineering**: High-altitude work vehicles, hydraulic climbing forms, tower crane lifting systems.
- **Special Equipment**: Aircraft maintenance platforms, stage machinery, ship hatch lifting.
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## 6. Product Advantages
- **High Reliability**: Redundant safety design (double valve protection, emergency descent function).
- **Low Noise**: Utilization of low-noise pump units and shock absorption design (≤ 65dB).
- **Intelligent**: Optional sensor + PLC can be equipped to achieve highly closed-loop control and fault diagnosis.
- **Energy Conservation and Environmental Protection**: Variable pump + pressure compensation technology reduces energy waste.
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