HYDRAULIC MOTOR "KIRMAK" Russian patent published in 2010 - IPC F03C2/08 

FIELD: machine building.

SUBSTANCE: hydraulic motor comprises race 1 and working element mounted in it and actuated by pressurised fluid, elements of connection to discharge and drain hydraulic lines. Working element is arranged in the form of conical helical gerotor race mounted on shafts in bearing supports, where profile of teeth and recesses in normal cross section is formed by semi-ellipses with radially arranged large axis of ellipse. Helical lines on conical surface of teeth represent curve with alternating pitch that attenuates in compliance with law of logarithmic spiral. Hydraulic motor is equipped with opposite left and right shoes 14 and 13, controller of output shaft rotation speed. Shoes 13 and 14 segmentally cover external conical surfaces of gears 2 and 3. In left shoe 14 there is a through hole 25 joined to discharge hydraulic line.

EFFECT: using hydraulic motor in vehicles drive instead of gear box significantly simplifies vehicles drive, increases reliability and efficiency, fuel consumption, improves environmental parametres of vehicle.

3 cl, 2 dwg