RECUPERATIVE HYDRAULIC DRIVE OF LOGGING TRUCK Russian patent published in 2018 - IPC A01G23/00 B66F9/22 

FIELD: machine building.

SUBSTANCE: recuperative hydraulic drive of a logging truck contains hydraulic cylinders of the boom, handle and crown of the hydraulic manipulator, equipped with spring-loaded pressure multipliers, as well as hydraulic distributors, check valves, hydraulic pump, hydraulic tank, filter, automatic discharge valve, air-charge accumulator, drain and pressure hydraulic lines. Rods of spring-loaded pressure multipliers are kinematically connected to the plungers of the additionally installed high pressure hydraulic cylinders. Blind ends of hydraulic cylinders are connected to blind ends of spring-loaded pressure multipliers and through parallel check valves, pressure reducing valves and hydraulic control valves are connected to the discharge hydraulic main. Their rod ends are connected by means of hydraulic control valves with a suction hydraulic main. Ends of high-pressure hydraulic cylinders are connected by means of check valves with suction and discharge hydraulic lines. Device is equipped with reversible hydraulic motors of wheels, driven by a hydraulic pump driven by a truck engine and controlled by hydraulic control valves installed in their discharge and drain hydraulic mains. Rod and blind ends of the suspension hydraulic cylinders are connected separately to the suction and discharge hydraulic mains by a series-connected throttle and two check valves.

EFFECT: increase in the reliability and reduced fuel consumption of the logging truck is provided.

1 cl, 2 dwg