| 摘要 |
A track laying work vehicle (10) has an undercarriage assembly (16) including a rigid support beam (46) and first and second roller frame assemblies (36, 38), one on either side of the vehicle (10). Each roller frame assembly (36, 38) has first and second end portions (52, 54, 56, 58) and supports a rotatable idler wheel assembly (40, 42) at the first end portion (52, 56) and a powered drive wheel (26, 28) at the second end portion (54, 58). Each drive wheel (26, 28) is frictionally engaged with a drive axle (22, 24) of the vehicle (10) and can be engaged with a drive axle (22, 24) at a plurality of lateral positions on the axle (22, 24). The first end portion (52, 56) of each roller frame assembly (36, 38) is releasably connected to one end (84, 86) of the support beam (46) and is laterally moveable on the support beam (46). An endless track (48, 50), such as an elastomeric belt (60, 62), encircles a respective drive wheel (26, 28), roller frame assembly (36, 38), and idler wheel assembly (40, 42) on each side of the vehicle (10). By moving the track roller frame assembly (36, 38) and drive wheel (26, 28) laterally along the drive axle (22, 24) and support beam (46) respectively, various gage settings of the endless track (48, 50) are provided. |
