HYDRAULIC SYSTEM WITH PROTECTIVE DEVICE Russian patent published in 2018 - IPC F15B20/00 

FIELD: transportation.

SUBSTANCE: system is designed for use in land vehicles equipped with a hydraulic hinge system. The system comprises a hydraulic tank, a filter, a pump, a bypass valve connected to a pressure line and a spool valve. The pressure line is connected to a power hydraulic cylinder and a drain line, check valves are designed to harmonize the liquid flow motion at the neutral position of the spool valve, adjustable chokes are designed for maintain the pressure at a certain level in the drain line feeding the auxiliary hydraulic cylinder acting by means of a rod on a pump drive clutch lever, a spring counteracting the lever motion. The lever lock serves to ensure the hydraulic system performance at its initial start-up, when the auxiliary hydraulic cylinder is inoperative. A canvas sleeve closing threaded connections and retained by collars from moving by means of tightening is designed to collect working fluid and prevent the emission of the working fluid into the environment in an accident. The connection points of the three pipelines are implemented by means of a threaded connection of tees.

EFFECT: improving environmental safety.

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