| 摘要 |
The invention concerns the drive roller of a vehicle. Hydraulic systems for hydraulic motors 6 and hydraulic cylinders 9 of the drive rollers 5 which pull the rollers 5 against the vehicle wheels 3 are coupled in parallel, so that they automatically disengage when the vehicle speed exceeds the peripheral speed of the drive roller 5, both in forward drive and reverse. <IMAGE> |
