| 摘要 |
<p>The controller is for a hydraulic cylinder with a manually operated control plunger and a cut-off block between plunger and cylinder. The block has a switch piston with a control pin and an outer closing element, which in the rest position lies against a first valve seat in the housing. In this is a spring-loaded, inner closing element, which can be fitted by the central pin from an inner seat in the first closing element and controls a connection between a pressure chamber connected with a connecting channel passing to the cylinder and the central plunger-side connecting channel. A choke (53, 54) between the spring (55, 56) and the inner closing element (48, 49) is guided in a bore section (51, 52) between the pressure chamber (42, 43) and inner seat (46, 47). This has a choke cross-section (53', 54') which expands towards the inner closing element (48, 49).</p> |
