| 摘要 |
<p>A pressure medium activated piston-cylinder device comprises a cylinder (10) with two end walls (11, 12) both having pressure medium communication ports (16, 17), a piston (13) movably guided in the cylinder (10) and connected to a piston rod (14) which extends out of the cylinder (10) through a sealed-off passageway (18) in a first one (12) of the end walls (11, 12), and a piston rod (14) locking device (21) located in the passageway (18) and including a clamping element (22) axially locked to the first end wall (12), and activating member (23) which is continuously spring biassed toward a clamping element (22) activating position and shiftable by pressure medium toward a release position, against the spring bias force, wherein a manually operable release mechanism comprises a tubular thrust element (32) movable in the first end wall (12) between a rest position and an activating member (23) releasing position, and a maneuver spindle (33) having a cam surface (46) for co-operation with a cam surface (41) on the thrust element (32) for moving the thrust element (32) between its rest position and the activating member (23) releasing position as the maneuver spindle (33) is rotated.</p> |
