What Is a Force Pump?

Most of the booster pumps of the wheel loader braking system are gas push oil boosters. The structure of the XM-60 type afterburner used in most domestic loaders is shown in Figure 1 ^[1]

Afterburner pump

Right!

Most of the booster pumps of the wheel loader braking system are gas push oil boosters. The structure of the XM-60 type afterburner used in most domestic loaders is shown in Figure 1 ^[1]

Improvement of afterburner pump

There are two oil holes at the bottom of the oil cup, which lead to the front and middle oil chambers of the piston of the hydraulic cylinder.

figure 2

When the cylinder piston pushes the hydraulic cylinder piston to move forward, the two holes are in communication with the oil injection chamber in the middle of the hydraulic cylinder piston. Because the oil injection chamber is filled with brake fluid before starting work, the oil injection chamber does not The volume changes, so the movement of the piston of the hydraulic cylinder outside the two holes will not cause the brake fluid in the oil cup to flip up and down, so there will be no air bubbles.

When the piston of the hydraulic cylinder moves between the two holes, the volume of the oil chamber will change slightly, which will cause the oil surface in the oil cup to fluctuate slightly. At the same time, the oil cup is changed to a sealed structure to prevent airborne dust from entering the oil. The cleanliness of the brake fluid is maintained. The installation test proved that the replacement period of the brake fluid of the original afterburner was doubled. Seen from Figure 2 ^[1]