초록 ▼

A track-type vehicle comprises a track roller frame mounted on either side thereof and an endless track assembly mounted on each of the frames. An endless track assembly is entrained on the track roller frame and adapted to be driven by a sprocket operatively engaged therewith. The final drive for t

A track-type vehicle comprises a track roller frame mounted on either side thereof and an endless track assembly mounted on each of the frames. An endless track assembly is entrained on the track roller frame and adapted to be driven by a sprocket operatively engaged therewith. The final drive for the sprocket comprises a rotatable input shaft having a sun gear secured thereon and meshing with a first set of planetary gears which react against a stationary first ring gear. Each gear of a second set of planetary gears is rotatably mounted on a rotatable carrier by a common shaft also having a respective gear of the first planetary gear set mounted thereon. The gears of the second planetary gear set mesh with a second ring gear rotatably mounted in the final drive and secured to the sprocket for simultaneous rotation therewith.

대표청구항 ▼

In a track-type vehicle of the type comprising an endless track assembly and a rotatable sprocket operatively engaged with said track assembly for selectively rotating the same, final drive means mounted on a frame and operatively connected to said sprocket for selectively rotating the same comprisi

In a track-type vehicle of the type comprising an endless track assembly and a rotatable sprocket operatively engaged with said track assembly for selectively rotating the same, final drive means mounted on a frame and operatively connected to said sprocket for selectively rotating the same comprising a rotatable input shaft, a sun gear secured to said shaft for rotation therewith, a cluster planetary gear set comprising at least one pair of first and second planetary gears secured on a common shaft for simultaneous rotation therewith, a rotatable carrier having said common shaft rotatably mounted thereon, a first ring gear secured to said frame and meshing with said first planetary gear and a second ring gear rotatably mounted on said frame and meshing with said second planetary gear, said second ring gear secured to said sprocket for simultaneous rotation therewith.