STEPLESSLY VARIABLE ROTATION MECHANISM FOR TRACK-TYPE MACHINE Russian patent published in 2007 - IPC B62D11/18 

FIELD: transport engineering, in particular, equipment used in transmissions of track-type transportation machines.

SUBSTANCE: steplessly variable differential rotation mechanism has flat differential, two three-linked planetary gear set, and reversing hydrostatic drive. Differential 5 and planetary gear set 6, 7 are arranged on single axis. Epicyclic gear 17 of differential is connected to input shaft 1 and pump shaft of hydrostatic drive. Carrier 16 of differential is connected to central gear 19 of first planetary gear set 6 and with right-handed output shaft 2. Central gear 15 of differential is connected to central gear 23 of second planetary gear set 7 and left-handed output shaft 2. Carriers 21, 25 of first and second planetary gear rows are rigidly joined to one another. Epicyclic gear 20 of first planetary gear row is rigidly joined to casing 4. Epicyclic gear 24 of second planetary gear row is joined with motor shaft of hydrostatic drive. Mechanism provides stepless changing of rotation from zero to value enabled by set power of hydrostatic drive.

EFFECT: reduced sizes and weight of steplessly variable mechanism.

1 dwg