PLANETARY GEARBOX Russian patent published in 1999 - IPC

FIELD: transport engineering; truck and crawler vehicle transmissions. SUBSTANCE: gearbox has three single-row planetary mechanisms, two clutches and three brakes. Central gear with external teeth of first planetary mechanism is connected with input shaft; through first clutch, with carrier of this planetary mechanism and with internal central gear of secondary planetary mechanism; through second clutch, with carriers of second and third planetary mechanisms coupled to each other and with output shaft. brakes are installed on internal central gears of first and third planetary mechanisms and on interconnected external central gears of second and third planetary mechanisms. EFFECT: simplified design of gearbox, enhanced reliability and increased efficiency. 1 tbl, 1 dwg