Oil-liquid hybrid

In the process of rotary braking of excavator, the hydraulic motor has the energy of overflow heating, which can be recovered and stored in accumulator. When the hydraulic system requires a large flow rate, the accumulator releases its internal oil to replenish the actuator. Similarly, when the arm drops, due to the potential energy of the arm itself, the oil removed from the outlet of the hydraulic cylinder of the arm will have a certain pressure. The oil is recovered to the accumulator and released to the hydraulic system when the system needs a large flow rate.