| 摘要 |
A pneumatic or hydraulic cylinder with built-in velocity control has a connection port (1) for intake and removal of working medium to and from the respective cylinder chamber (3). A first inner part of said connection port facing towards the cylinder chamber is provided with a non-return valve means (2, 4, 5, 14), which is constructed such that on one hand it permits working medium inflow with small flow losses to the cylinder chamber from an outer part of the connection port situated outside said non-return valve means, and, on the other hand, it blocks outflow of the working medium from the cylinder chamber to said outer part of the connection port. A second inner part of said connection port, similarly facing towards the cylinder chamber, is provided with an adjustable constriction valve means (6, 6a), which is constructed to enable a variable degree of working medium outflow from the cylinder chamber to said outer part of the connection port depending on the desired working velocity of the cylinder. |
