| 摘要 |
<p>A machine (1) for. extending and retracting an extendable corrugated hose (3) comprises a tubular housing (4) for storing the extendable corrugated hose (3) in a retracted condition, tubular housing (4) having a rear end (5), which is connected to a pipe (T), and a front end (7), and a drive assembly (12) comprised of a plurality of drives (14i, 142,..., 14n) at the front end (7) of the tubular housing (4), the drives (14i, 142,..., Hn), by means of a relevant driving unit (13), being adapted to act by surface engaging means on the extendable corrugated hose (3) projecting from the front end (7) of the tubular housing (4). Each drive in the plurality of drives (14i, 142/..., 14n) is coupled by a coupling (30) with adjacent drives to be moved by the precedent one in a succession in which at least the first drive (140 is moved by the driving unit (13).</p> |
