PLANETARY GEARBOX Russian patent published in 1994 - IPC

FIELD: tractor manufacture. SUBSTANCE: gearbox provides four forward speeds and one reverse speed. The gearbox has for brakes, drive and driven shafts, five planetary gears built up from central internal and external wheels and carriers with single rim pinions. The drive shaft is connected to the internal central wheel of the first planetary gear and to the external central wheel of the third planetary gear. The external central wheel of the first planetary gear is connected to the internal central wheel of the second planetary gear and the first brake. The carriers of the first and the third planetary gears are interconnected and also connected to the external central wheel of the fourth planetary gear. The carrier of the second planetary gear is connected to the second brake, the internal central wheel of the third planetary gear - to the carrier of the fifth planetary gear. The carrier of the fourth planetary gear is connected to the third brake and the external central wheel of the fifth planetary gear. The external central wheel of the fourth planetary gear is connected to the fourth brake, the internal central gear of the fifth planetary gear is connected to the driven shaft. EFFECT: improved structure. 4 dwg