| 摘要 |
A track set for connection to an axle assembly (12) of the traction wheels of a vehicle or a trailer consists of a track set frame (6), a drive wheel (4), two track wheels (8,19), a track mat (3) and a track mat tensioning mechanism (9). The track wheels (8,19) are located at the forward and rearward ends of the track set respectively. The drive wheel (4) is adapted to be connected to the traction axle (12) and is located between and above the track wheels (8,19). The tensioning mechanism (9) comprises two rollers (5,20), one located forward of and the other to the rear of the drive wheel (4). The rollers (5,20) are spring-loaded to urge the track mat (3) mainly downwards so that the contact angle between the track mat (3) and the drive wheel (4) is maximised. The interval between the teeth of the drive wheel (4) is substantially larger than the meshing element of the track mat (3) entering this interval, and the pitch of the track mat (3) is larger than the pitch of the drive wheel (4). The track set enables various kinds of standard type land vehicles, such as agricultural, forest and bog tractors and their trailers to be converted into track- borne vehicles, and operates reliably even in difficult conditions. <IMAGE> |
