| 摘要 |
A control device for those pressure fluid apparatuses which include a liquid container vessel (2) and a power mechanism (3) with a working space (4) designed to develop power by receiving liquid from the vessel (2) during the increase of the working space's (4) volume. The liquid is also arranged to be returned to the vessel (2) when the volume of the working space (4) is reduced. The liquid in the vessel can be set in motion under pressure by means of fluid from a pressure fluid source. This pressure fluid is controlled by a valve (5) in the control device (1), while the liquid is controlled by a second valve (6) in the control device (1). The valves (5,6) have a common control mechanism (8) and are functionally coordinated in such a way that, when the control device (8) is set with the objective of to transferring liquid to the working space (4), the first valve (5) causes the liquid in the container vessel (2) to be put under pressure before communication with the working space (4), is opened; while, when the control device (8) is set to evacuate liquid from the working space (4), the first valve causes a release of pressure in the liquid in the vessel (2) before the second valve (6) opens communication to the vessel (2).<IMAGE> |
