| 摘要 |
The invention relates to a drive roller arrangement of the type in which it is possible to fold down a drive roller, freely mounted on a shaft (8), into engagement with a driven and a non-driven wheel on a vehicle. The invention makes this arrangement more compact because the roller shaft (8) mounted at the ends of the forearms (6) mounted in a elbow joint (7) on hydraulically operated (9) upper arms (5), mounted on a shaft (4) fixed to the vehicle, is caused in a retracted position to swing in towards the upper arms (5). This is done by providing a forearm (6) with a guide surface (10), which interacts with a deflector (11) placed outside the circular arc described by the elbow bearings (7) as it swings. |
