| 摘要 |
<p>A tracked vehicle produces a pressure no more than 3 psi on the ground by increasing the number of contact points on the inner surface of the track. The stiffness of the track (300) is also selected to minimize bowing between the idler wheels or rollers (700). The track (300) is therefore kept substantially straight between the rollers (700) to increase the efficiency associated with transferring power to the track (300). The drive sprocket (900) is positioned above the ground so as to eliminate complexity in the design and yet effectively transmit power to the tracks (300). Positioning the sprocket (900) above ground also prevents derailing of the track (300). The track (300) is also held in a constant state of tension on the driver sprocket (900) and the roller. This too prevents derailment. The undercarriage (210) of the vehicle includes torsion axles (202) and sealed bearings to provide for a lower maintenance track. Components associated with the undercarriage do not require constant greasing and cleaning of the idler wheels. The track (300) is beveled so that it does not rip up surfaces. The drive sprocket (900) is provided with roller sleeves (920, 922) that accommodate the changes in the pitch line of an elastomeric flat track. The sprocket does not 'scrub' the areas between the driving lugs (322). The drive sprocket (900) includes a pair of scrapers and a pair of conical shields which provide self cleaning and (940, 942) which remove debris from the sprocket area.</p> |
