| 摘要 |
<p>The bench is for learning driving and testing cars. It has a carrying frame assembly with power driven rollers, on which the car rests. The assembly has two parallel ramps, each with two pairs of cylindrical rollers. These are mounted in cradles on the ramps. The rear one is fixed and can be turned. The drive is hydraulic with a motor/pump for each roller pair and mounted on the roller. At front and rear are side rollers to hold the vehicle. The hydraulic circuit has all necessary controls.</p> |
