| 摘要 |
A power arrangement functioning with a pressure medium which includes an elongated cylindrical tube 1, a piston 2 which is moved by means of a pressure medium, a piston rod connected to the piston, and a mechanical locking device 4 to lock the piston and piston rod in a fixed position relative to the cylindrical tube. The cylindrical tube includes a first stopper 5 for locking with the locking arrangement; and the locking arrangement 4 includes an elongated rigid frame 6 which is connected to the piston rod 3 and guided with the control of the cylinder tube 1 to move parallel to the piston rod in the cylindrical tube; at least two elongated movement screws 7, 8, which are housed parallel to the longitudinal axis of the power arrangement relative to frame 6 and at least one coupling device 9 is part of a movement screw 7 for rotation of the movement screw; and a locking piece 10 which includes threads 11, 12 corresponding to the movement screws 7, 8, and a second stopper 13 to support the locking piece against the first stopper 5 of the cylindrical tube. <IMAGE> |
