Double action hydraulic cylinder locking device for providing form-fit connection between cylinder and piston rod, has connection provided in cylinder area, and pipelines released by pistons corresponding to unlocked or locked position

摘要

The device has a hydraulic connection (7) provided in cylinder area over a base-sided control unit (6) and having pressure controlled control pistons with control bars, which act on a sliding sleeve (4) for unlocking. The hydraulic connection with an inlet pipeline and an outlet pipeline is connected with a piston chamber of a double action hydraulic cylinder (1) over a non-return valve. The inlet pipeline and the outlet pipeline are released by the control pistons corresponding to an unlocked position or locked position. The control bars control the inlet pipeline and the outlet pipeline.