| 摘要 |
The invention relates to a hydraulic actuator with movement decoupling, that can be applied to actuations where a linear movement must be performed while ensuring the freedom of a rotary movement. A hydraulic cylinder (03) held on the fixed part of the machine comprises a piston (01) that can perform the required linear movement, said piston comprising a mechanical interface (11) that can transmit the linear movement towards the rotating part (08) by means of an axle or a concentric master tube (07) axially sliding in the rotating part and rotating therewith. The interface performs a decoupling between the linear movement and the rotating movement, leaving the rotating movement entirely free. The invention also relates to the combination of the main hydraulic actuator with a hydropneumatic converter, the converter comprising a pneumatic cylinder (24) containing an annular pneumatic piston (20). The pneumatic piston can drive at least one pressure amplifying hydaulic cylinder (19, 25) along with its linear movement. |
