Crawler Traction Device
AssigneeCNH America LLC
InventorGiorgio Bordini
Life of this patent
Estimating the term…
Abstract
A crawler traction device for a crawler vehicle, in particular a tractor, the device having a carriage, a drive sprocket rotating about a first axis, an idler wheel rotating about a second axis parallel to the first axis. The track is looped about the drive sprocket and the idler wheel and meshes with the drive sprocket along a meshing arc. The traction device has a noise and vibration damping device having an auxiliary roller which rotates about a third axis parallel to the first axis and is eccentric with respect to the drive sprocket as well as smaller in diameter than the drive sprocket. The noise and vibration damping device only cooperates with the track along a portion of the track located, in use, immediately upstream from the meshing arc and interposed between the auxiliary roller and the terrain.
Claims25
A crawler traction device for a crawler vehicle, in particular a tractor, the crawler traction device, the crawler traction device comprising:
- a frame;
- a carriage having a longitudinal axis;
- a rear drive sprocket fitted to the frame to rotate about a first axis crosswise to the longitudinal axis;
- a front idler, fitted to the carriage to rotate about a second axis, parallel to the first axis;
- a track looped about the drive sprocket and the front idler, and meshing with the drive sprocket along a meshing arc;
- and
- a damping device for reducing vibration caused in use by the moving vehicle, the damping device having an auxiliary roller rotating about a third axis, the crawler traction device being characterized in that the auxiliary roller is eccentric with respect to the drive sprocket, is smaller in diameter than the drive sprocket, and only cooperates with the track along a portion of the track located, in use, immediately upstream from the meshing arc and interposed between the auxiliary roller and the terrain.
A crawler traction device for a crawler vehicle, in particular a tractor, the crawler traction device comprising:
- a frame;
- a carriage having a longitudinal axis;
- a rear drive sprocket fitted to the frame to rotate about a first axis crosswise to the longitudinal axis;
- a front idler wheel fitted to the carriage to rotate about a second axis parallel to the first axis;
- a track looped about the drive sprocket and the idler wheel and meshing with the drive sprocket along a meshing arc;
- and
- a damping device for reducing vibration caused in use by the moving vehicle;
- the crawler traction device being characterized in that the damping device comprising a pair of front rollers, which are located on opposite sides of the idler wheel to rotate about respective axes of rotation parallel to each other and to the second axis, are eccentric with respect to the idler wheel, have respective diameters smaller than that of the idler wheel, and only cooperate with the track along an initial portion of the winding arc of the track about the idler wheel.
A crawler traction device for a crawler vehicle, in particular a tractor, the crawler traction device comprising
- a frame;
- a carriage having a longitudinal axis;
- a rear drive sprocket fitted to the frame to rotate about a first axis crosswise to the longitudinal axis;
- a front idler fitted to the carriage to rotate about a second axis parallel to the first axis;
- a track looped about the drive sprocket and the front idler and meshing with the drive sprocket along a meshing arc;
- a damping device for reducing vibration caused in use by the moving vehicle;
- and
- the idler defining a front portion of the damping device, and comprising a pair of identical front rollers fitted to a fork to rotate about the second axis;
- the fork being connected to the carriage by a tensioning device to allow the front rollers to slide in a direction parallel to the longitudinal axis.
Dependencies are inferred from the claim text.