Therefore, in the hydraulic system, the flow rate and pressure of the hydraulic pump are often determined according to the required movement speed and the received load during the operation stage. Then, without adding power consumption, a fast loop is selected to increase the idle travel speed of the work organization.
The fast circuit is characterized by a small load (small pressure) and a large flow. Now use dual hydraulic pumps for oil supply. The low-pressure human flow pump and the high-pressure small flow pump are connected in parallel, and they can realize the rapid movement of the hydraulic cylinder when supplying oil to the system; when entering the work advancement stage, the system pressure rises and the solenoid valve opens to unload the human flow pump. The small flow pump supplies oil to the system, and the movement of the cylinder becomes a slow-moving stroke.