| 摘要 |
<p>The device comprises a support plate (25) and runners (19), each having a respective sliding surface so that the runners can slide on the support plate. A gap (26) is created along the support plate opposite the sliding surface. Driving means such as chains (24) are provided next to the runners so that they can travel on a closed path around the support plate as a result of the movement of the load. The closed path comprises an outward journey whereby the runners slide on the support plate and a return journey whereby the runners move into the gap with their sliding surface which is oriented in an opposite position with respect to the support plate.</p> |
