Patent ID: 9592865
Date: 2017-03-14
CPC Classifications: B62D

Claim:
1. A track assembly for a mobile machine, comprising: a plurality of crawler shoes, each having a ground engaging surface and first and second integral pairs of links laterally spaced-apart on a side opposite the ground engaging surface to form two separate chains; a plurality of pins connecting the two separate chains of each of the plurality of crawler shoes to the two separate chains of adjacent ones of the plurality of crawler shoes to form an endless loop; a drive wheel having dual sprockets configured to extend into a space between links of a corresponding one of the first and second integral pairs of links to engage the plurality of pins, and a hub connecting the dual sprockets, wherein the hub is configured to exert bearing forces on first wear surfaces of the first and second integral pairs of links; an idler wheel located at an end of the track assembly opposite the drive wheel and configured to engage the first wear surfaces; a plurality of rollers disposed between the drive wheel and the idler wheel, wherein the plurality of rollers are configured to engage a second wear surface of each of the plurality of crawler shoes different than the first wear surfaces engaged by the hub of the drive wheel and by the idler wheel; and a tensioner configured to push the idler wheel away from the drive wheel.