| 摘要 |
A hydraulic closing unit has a ring-shaped hydraulic cylinder (26) that generates a closing force, a locking bushing (34), an assisted drive (37) for swivelling the locking bushing (34) from a first angular position to a second angular position, and a pressure bar (22) that extends through the hydraulic cylinder (26) and the locking bushing (34) in the axial direction. Outer teeth (40) on the pressure bar (22) and inner teeth (46) in the locking bushing (34) allow the pressure bar (22) to be axially pushed through the locking bushing (34) in the first angular position of the locking bushing (34), and an axial force to be transmitted in the second angular position of the locking bushing (34). The hydraulic cylinder (26) is designed as a double action, ring-shaped compression cylinder. The piston (28) of the hydraulic cylinder (26) is secured against rotation and screwed by means of a rotary thread (36) into the rotary locking bushing (34). |
