HYDRAULIC SYSTEM OF EXCAVATOR Russian patent published in 2020 - IPC E02F9/22 

FIELD: machine building.

SUBSTANCE: invention relates to excavator hydraulic system. System comprises a hydraulic pump with a safety valve, pressure and drain lines, hydraulic percussion devices, a tool, an interfacing unit of hydraulic cylinders of the excavator with a control unit of the system of hydraulic percussion devices. Interfacing unit consists of OR elements connected by means of quick-disconnect couplings, pressure sleeves to hydraulic cylinders of handle and ladle drive, and handles and bucket connected with hydraulic control valves connected by pressure main line with hydraulic pump, and drain line with hydraulic tank. First OR element is connected by one input with handle drive hydraulic cylinder, second input with bucket drive hydraulic cylinder and outlet with pressure line, and the second OR element is connected by the inlet and outlet to the drain main line and control lines with the handle and bucket drive hydraulic cylinders. Control unit of hydraulic percussion devices consists of switching valves connected in parallel with hydraulic cylinders of handle drive and excavator bucket.

EFFECT: technical result is higher efficiency of excavator by providing power to hydraulic percussion devices and hydraulic cylinders drive boom, handle and excavator bucket from common source of fluid flow and synchronize operation of hydraulic percussion device and working equipment of excavator.

1 cl, 1 dwg