What is the working principle of hydraulic power unit?

The working principle of hydraulic power units is based on hydraulic principles, utilizing the property of liquid pressure transmission to complete energy accumulation, transmission, and amplification through the static pressure of liquid media, achieving lightweight, scientific, and maximization of mechanical functions. The hydraulic transmission system relies on liquid as the working medium, converts mechanical energy into hydraulic pressure energy through hydraulic pumps, and then converts hydraulic pressure energy into mechanical energy through hydraulic cylinders or hydraulic motors to achieve various actions.

 

A complete hydraulic system consists of the following parts:

Energy devices, such as hydraulic pumps, convert the mechanical energy of the prime mover into hydraulic pressure energy.

Execution devices, such as hydraulic cylinders and hydraulic motors, convert the pressure energy of liquids into mechanical energy to achieve various actions.

Control and regulation device: used to control the pressure and flow of the hydraulic system, ensuring the stable operation of the system.

Auxiliary devices: including pipelines, valves, oil tanks, etc., used to assist the normal operation of hydraulic systems.

Liquid medium: usually hydraulic oil, used to transmit pressure energy.

 

The hydraulic power unit has the following characteristics:

1. Lightweight, small in size, and with low motion inertia, it is suitable for occasions that require frequent starting and stopping.

2. Easy to achieve stepless speed regulation and overload protection, improving the safety and reliability of the system.

3. Smooth transmission, easy to frequently change direction, suitable for applications that require precise control.

4. Easy to implement automation, complex action sequences can be achieved through electro-hydraulic joint control.

5. The manufacturing accuracy requirements are high, so the price is high, but the components have a long lifespan and are easy to maintain.