| 摘要 |
<p>The fluid-dynamic circuit (100; 200; 300; 400; 500; 600; 700; 800; 900) comprises: a source (101) of a pressurized fluid; distributor valve means (103) for distributing said pressurized fluid to transport lines (111, 112, 123; 145; 151; 159); a feeding line (102) for feeding said pressurized fluid, which is interposed between said source (101) and said valve means (103); at least one main user apparatus (117) which is reciprocatingly operated by actuator means which comprise a slider (114) slideably and sealably fitted in a sliding seat (116) of a containing element which is divided thereby into a first chamber (113) and a second chamber (115) in opposite positions and having variable volumes; and at least one second and one third transport lines (111, 112) for said pressurized fluid, which are interposed between said distributor valve means (103) and said first chamber (113) and second chamber (115) respectively, a first derived transport line (123) being interposed between said valve means (103) and at least one of said second and third transport lines (111, 112), and having normally closed quick discharge means (126) mounted thereto, whose opening is designed to be controlled by actuator means.</p> |
