Planetary backward and forward drive apparatus

Details Planetary backward and forward drive apparatus Planetary backward and forward drive apparatus

F - Mech Eng,Light,Heat,Weapons

16

H

74/130

F16H 3/44 (2006.01) F16H 37/04 (2006.01)

Patent

CA 1271345

Abstract of the Disclosure There is disclosed a planetary backward and forward drive apparatus comprising a planetary gear mechanism disposed between an input and an output shafts. The planetary gear mechanism includes a carrier connected to the input shaft, two step planet gears supported by the carrier and consisting of a large first gear and a small second gear, a first sun gear connected to the output shaft, and a second sun gear freely rotatably mounted on the first sun gear and meshing with the second gear. A forward drive condition is provided when the carrier and the second sun gear are connected to each other by an operation of a first hydraulic clutch, and a backward drive condition is provided when the second sun gear is fixed to a stationary case by an operation of a second hydraulic clutch.

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