| 摘要 |
<p>A tensioning device is provided for maintaining the tension on a continuous flexible track (15) of a track apparatus (10). The track apparatus (10) includes an idler wheel (137) which engages the flexible track (15) and which is movable between a first non-deflected position and a second deflected position. A dampening mechanism extends between an idler axle (136) which supports the idler wheel (137) and the frame (34) of the track apparatus (10) in order to exert a force on the idler axle (136) to urge the idler wheel (137) towards the non-deflected position. The dampening mechanism progressively increases the force on the idler axle (136) as the idler wheel (137) moves towards the deflected position.</p> |
