HYDRAULIC OIL SUPPLY DEVICE OF HYDRAULIC CONSTRUCTION MACHINERY EQUIPMENTS

摘要

The present invention relates to a hydraulic oil supply device for supplying hydraulic oil to hydraulic construction machinery, and more specifically, to hydraulic oil supply device of hydraulic construction machinery, which operates the hydraulic construction machinery by supplying hydraulic oil thereto without noise and exhaust fumes. The hydraulic oil supply device of the hydraulic construction machinery includes a body made with frames, an oil tank installed in the body to receive hydraulic oil discharged from the hydraulic construction machinery through a discharge hose; a hydraulic pump installed in the body to supply the hydraulic oil in the oil tank to the hydraulic construction machinery through a supply hose; a motor installed to the body and connected to the hydraulic pump to operate the hydraulic pump; and a controller controlling the motor, wherein the controller operates the hydraulic pump for the hydraulic oil stored in the oil tank to be supplied to the hydraulic construction machinery through the supply hose, and the supplied hydraulic oil returns to the oil tank through the discharge hose after operating the hydraulic construction machinery.