| 摘要 |
Hydraulic or pneumatic coupling arrangement (1) comprising piston-cylinder units (2, 3) and pipe system (4) linking these units to a pressure source (5) via a valve (6) controlled by a joystick (6a). In a first active position (A), different from a neutral position, pressurised medium is supplied to a unit, whilst in a second active position (B) this medium is supplied to a different unit. A first hose (41) belonging to the pipe system is connected via a reverse valve (10) to the one end (2a) of a first unit (2) and to one end (3b) of a second unit (3), whilst a second hose (42) is connected via a reverse valve (11) to the other ends (2b, 3a) of the first and second units. These hoses are pressurised depending on the position of the joystick - pressurisation of the first hose forces one of the units (3) into an end position. This increase in pressure is designed so that the pressurised medium can pass through the reverse valve and force the other unit (2) into an end position. |
