| 摘要 |
<p>PURPOSE:To provide a lightweiqht and compact hauling unit at low cost in which a rotary drive are decelerated automatically and stopped without requiring any special mechanism. CONSTITUTION:The hauling unit comprises a pair of resilient rollers 4, 5 being driven through rotary drives 2, 3 to haul a wire while holding by means of the rollers 4, 5, wherein the drivers 2, 3 comprise air motors.</p> |
