SUMMING REVERSE GEARBOX Russian patent published in 2018 - IPC F16H3/08 B63H23/06 

FIELD: machine building.

SUBSTANCE: invention relates to gearboxes. Summing reverse gearbox contains two driving shafts with gears on them, two intermediate forward-stroke shafts with gears formed on them and toothed wheels engaged with gears on the drive shafts with integrated hydraulic friction clutches, equipped with a hydraulic brake friction clutch, an intermediate reverse shaft with toothed gear teeth mounted on it, with a hydraulic friction clutch integrated in it, and a toothed wheel engaged with the toothed wheels of the intermediate forward-stroke shafts with a built-in hydraulic friction clutch, output shaft of the gearbox with a toothed wheel engaged with toothed wheels on the forward and reverse intermediate shafts, and oil system with a control pump, shut-off and check valves and control oil lines. Control oil line of the hydraulic brake friction clutch on the reverse intermediate shaft is connected through the check valves directly to the control oil lines of each of the hydraulic friction clutches in the toothed wheels of the forward-stroke intermediate shafts.

EFFECT: improved reliability of the reducer is ensured.

1 cl, 2 dwg