Structure and Operating Principle of Excavator Hydraulic Pump

Hydraulic pumps are also considered an important part of the excavator. Has the function of absorbing oil in the tank and moving it in the hydraulic circuit to other hydraulic components under high pressure. To learn more about the structure and working principle of excavator hydraulic pumps, join Truong Linh Parts to learn through the article below.

1. Structure of excavator hydraulic pump

The hydraulic pump in an excavator is an important component of the hydraulic system, responsible for providing hydraulic oil to control and operate equipment such as cylinders, hydraulic motors and other parts in the machine. contact. Below is an overview of the basic structure of the hydraulic pump in an excavator:

1. Engine: The excavator hydraulic pump is equipped with an engine, usually a diesel engine or gasoline engine. The motor provides energy to operate the pump and create the necessary thrust.

2. Pump: The main hydraulic pump in an excavator hydraulic pump is usually a piston pump. A piston pump is a type of pump that creates high pressure by moving a piston in a cylinder. When the piston moves into the pump's suction port, it creates suction pressure to pump liquid from the supply source. As the piston moves out of the intake, the pressure in the cylinder increases and the fluid is pumped out.

3. Control valve: Control valve is used to regulate the flow and pressure of fluid in the excavator hydraulic system. There are many types of control valves, including step valves, wiper valves, return valves, and resume valves. Control valves are controlled by adjusting the position and flow of fluid through the pipes.

4. Oil tank: The oil tank is used to store hydraulic oil, ensuring sufficient oil supply for the pump and other hydraulic components in the system. The oil tank also has the function of cooling hydraulic oil by transferring heat through a heat conductive plate or using a cooling fan.

5. Pump shaft: The pump shaft in the excavator hydraulic pump is an important part of the hydraulic system. It is responsible for converting mechanical energy from the engine into hydraulic oil energy, creating the pressure necessary to operate the functional parts of the excavator.

6. Regulating valve: is an important component of the hydraulic system, helping to control the flow of hydraulic oil supplied from the pump to various hydraulic components on the excavator. This helps regulate the speed and operating pressure of hydraulic systems, meeting the specific requirements of the task.

7. Mirror disc: The mirror disc (gasket) in the excavator hydraulic pump is an important part to ensure the tightness and performance of the hydraulic pump. Mirror discs are often made from rubber or heat and pressure resistant materials to withstand harsh working conditions in hydraulic systems.

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