| 摘要 |
Device for the adjustment of the rotary position of a cylinder of a turning apparatus and for the axial displacement of an actuator for the changeover of the grippers on said cylinder of a sheet-fed rotary printing press Device for the adjustment of the rotary position between a fixed gearwheel (1) and a coaxial adjustable gearwheel (5) as well as for the changeover of the grippers through axial displacement of an actuating element (28) on a cylinder (2) of the turning apparatus of a sheet-fed rotary printing press, in which a pressure element (disk 10) is provided, said pressure element effecting, by means of spring force via radially extending pressure levers (8), a friction-type connection between the fixed gearwheel and the adjustable gearwheel and, in order to reduce the spring force, being guided on the cylinder (2) of the turning apparatus in such a manner as to be axially movable by an operable actuating element (28), said actuating element not acting upon the pressure element until after a distance has been covered for operating a switch (21) of an electrical safety device in a power-supply circuit of a driving apparatus, and in which a further electrical safety device of the power-supply circuit of the driving apparatus interrupts between the switching positions of the axially displaceable actuator (28) for the changeover of the gripper control. The spring force acting at one end on the pressure element (disk 10) is supported at the other end against a pressure bar (12), said pressure bar (12) being guided in the turning drum in such a manner as to be axially movable and, with the reactive force from the spring force and via intermediate elements (27, 29, 30-39), pressing against the cylinder (2) at least one clamping piece (54, 55), said clamping piece (54, 55) being disposed in the actuator (28) for the changeover of the gripper control and being movable radially with respect to the cylinder, with said pressure bar (12) thereby rigidly locking together in a radial direction both the clamping piece (54, 55) and the cylinder (2) (Fig. 1).
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