| 摘要 |
Crawling surface (10, 20, 30) for transporting primarily heavy loads, having a plurality of elements (12, 22, 32) capable of contracting which are surrounded by an elastic cover (14, 24, 34) and can periodically alter the distance of the cover (14, 24, 34) from the floor, the elements (12, 22, 32) effecting, by means of their arrangement or by means of auxiliary devices, with every distance alteration, a component of motion of the touch-down points (15), touch-down lines or touch-down surfaces in the direction of transport. <IMAGE>
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