CRAWLER TRACTOR TRANSMISSION Russian patent published in 1994 - IPC

FIELD: track-laying vehicles. SUBSTANCE: transmission has following units connected in succession: engine 2, clutch 1, power divider 5, toroid drives 8, reduction gears-doublers of gear ranges, driving shafts 12,13 of which are provided with rigidly mounted driving gears 17, driven shafts 15,16 are arranged coaxial with driving shafts and provided with loosely installed driven gears 20, brakes 21, bevel gears of final drive 23 and controlled toothed couplings 22, selectively connecting driven shafts with driving shafts 17 and driven gears 20; one of driving shafts 12 and driven shaft 16 arranged parallel to it are fitted with gear clusters 18,19 respectively, each of which is engaged with one of driving gears 17 and one of driven gears 20. EFFECT: enlarged gear ranges; tractor turning at any fixed radius made possible; enhanced reliability and durability of transmission due to elimination of reversal directly in toroid drives; decreased size. 1 dwg