| 摘要 |
<p>The device includes an accelerating device (1) for balls. The accelerating device has belts (101,103) for the acceleration of the balls. The accelerating device has oblong acceleration units (6,7), which are at a distance from each other. The distance corresponds to the diameter of a ball. The acceleration unit has a belt set (10) of two belts, which are led across a pair of guide rollers (8,9). The acceleration units do not run parallel to each other.</p> |
