| 摘要 |
<p>The device has a movable cleaning head slidably mounted on support axles and driven by pressurized fluid from a fluid supply tube. The head is subjected to a reciprocating movement between ends of the axles having adjustable/repositionable mechanical units e.g. stops (14, 15). A cam (9) of the tube has an end whose shape authorizes cooperation with the stops. The stops reciprocate sliding movement direction by reciprocating an outlet direction of the fluid. A central pivot is arranged in a middle part of an upper crosspiece (20), and accompanies the reciprocating movement of the head.</p> |
