Abstract: For a valve closing device (8), including an output shaft (9) for connecting a valve (3) and an input shaft (10) for connecting an actuating drive (2), it is provided that an emergency drive (11) for driving the output shaft (9) in the event of a mains power failure is designed as a constant force spring motor (28) and/or a force flow from the emergency drive (11) to the output shaft (9) is merged with a force flow from the input shaft (10) to the output shaft (9) by an overriding gear arrangement (16) and/or the emergency drive (11) is locked and released by a locking device (19).

Abstract: To improve the operator control capability of an actuating drive, switches are dispensed with and, instead, at least two rotary elements for rotational operator control are provided, arranged concentrically with respect to one another to be operatable using both hands and, in the process, are rotatable individually and independently of one another, preferably about a common axis of rotation. Rotational adjustment movements of the two rotary elements are transmitted by a magnetic coupling through a housing section, which is designed without apertures, of the actuating drive into an interior space of said actuating drive, such that, for reading out the magnetic fields, use can be made of conventional Hall sensors, and the housing of the actuating drive can be designed to be explosion-proof. In the event of failure of the rotary elements, the magnetic fields required for operator control are transmitted into the interior space using a magnetic pin for high operational reliability under all circumstances.

Abstract: An electronic control unit (1) or an electric actuator (2), respectively, have a switch-off device (4) which includes at least one reed switch (6, 18, 26) and at least one permanent magnet arranged outside the housing (3) and removable from the housing (3). If the permanent magnet (7) is removed from its position of usage at the housing (3), for example in order to perform maintenance of the electronic control unit (1) or of the actuator (2), respectively, the at least one reed switch (6, 18, 26) is opened, as result of which the supply link (8, 10) between the activating terminal (5) and the supply terminals (9, 11) of the control unit are interrupted in order to switch voltage-carrying functional elements of the control unit (1) and/or of the electric actuator (2) to be currentless and thus to effectively prevent an unwanted spark discharge.

Abstract: In a valve closing device (4) including an emergency actuator (7, 8), the emergency actuator (7, 8) is energized by at least two independently, redundantly operable energy storage units (10, 11, 18), each of which includes charging electronics (22) that allow rechargeable batteries (19, 20) of the energy storage units (10, 11, 18) to be operated at least in a maintenance charging cycle and in a trickle charging cycle.

Abstract: An apparatus for automation technology, comprising an actuator and an assembly for manual actuation of the actuator, wherein an electrical drive or an electro hydraulic drive is provided as the driving element for the actuator. The assembly includes a generator and a manual actuating element for the generator and wherein the assembly can be electrically coupled with the driving element of the actuator.

Abstract: In a valve closing device (4) including an emergency actuator (7, 8), the emergency actuator (7, 8) is energized by at least two independently, redundantly operable energy storage units (10, 11, 18), each of which includes charging electronics (22) that allow rechargeable batteries (19, 20) of the energy storage units (10, 11, 18) to be operated at least in a maintenance charging cycle and in a trickle charging cycle.

Abstract: In an actuating drive (1) having an electric motor (2) which is driven by a drive unit (4), it is provided to determine a state of charge of an intermediate circuit capacitor (5) of an intermediate circuit (3) which supplies the drive unit (4) and, depending on the determined state of charge, to adjust electrical power consumption by the electric motor (2) such that a critical state of charge of the intermediate circuit capacitor (5) can be avoided.

Abstract: A switching device (8) for control devices is provided, in which a recess (14) in an element (13) driven by an emergency drive (11) is designed with at least one inclined surface (17, 18) such that a blocking element (15) engaging in the recess (14) can be disengaged from the latter when the emergency drive (11) is actuated.

Abstract: An electronic control unit (1) or an electric actuator (2), respectively, have a switch-off device (4) which includes at least one reed switch (6, 18, 26) and at least one permanent magnet arranged outside the housing (3) and removable from the housing (3). If the permanent magnet (7) is removed from its position of usage at the housing (3), for example in order to perform maintenance of the electronic control unit (1) or of the actuator (2), respectively, the at least one reed switch (6, 18, 26) is opened, as result of which the supply link (8, 10) between the activating terminal (5) and the supply terminals (9, 11) of the control unit are interrupted in order to switch voltage-carrying functional elements of the control unit (1) and/or of the electric actuator (2) to be currentless and thus to effectively prevent an unwanted spark discharge.

Abstract: A measuring system for registering the absolute rotation angle of a rotating, measured object, wherein a first gear is associated with a shaft of the measured object, wherein the first gear directly or indirectly engages at least a second gear and a third gear and wherein tooth counts the individual gears differ from one another. There is associated with each gear a rotation angle sensor, which registers the rotation angle of the associated gear. A calculating unit is provided, which ascertains at least the difference between the rotation angle of the second gear and that of the first gear and the difference between the rotation angle of the third gear and that of the first gear and, based on a summing of the differences of the ascertained rotation angle of the gears, determines the number of whole numbered revolutions and the remainder rotation angle of the shaft of the measured object.

Abstract: For a valve closing device (8), including an output shaft (9) for connecting a valve (3) and an input shaft (10) for connecting an actuating drive (2), it is provided that an emergency drive (11) for driving the output shaft (9) in the event of a mains power failure is designed as a constant force spring motor (28) and/or a force flow from the emergency drive (11) to the output shaft (9) is merged with a force flow from the input shaft (10) to the output shaft (9) by an overriding gear arrangement (16) and/or the emergency drive (11) is locked and released by a locking device (19).

Abstract: An apparatus for converting a rotational movement into an axial movement. A threaded rod is provided, on which a nut is arranged to be movable axially to the threaded rod. At least one blocking structure is provided, which is so arranged that it blocks rotational movement of the nut during the axial movement along the threaded rod. There is provided on the threaded rod at least one end stop, which limits axial movement of the nut along the threaded rod. Between the axially movable nut and the end stop, a wedge lock washer pair is arranged. The wedge lock washer pair is so embodied that the wedge lock washers are brought into engagement by the pressing of the nut against the end stop and produce a prestress torque, wherein torque for releasing the nut from the end stop is smaller, essentially by the prestress torque of the wedge lock washer pair, than the torque applied as the nut first pressed against the end stop.

Abstract: In an actuating drive (1) having an electric motor (2) which is driven by a drive unit (4), it is provided to determine a state of charge of an intermediate circuit capacitor (5) of an intermediate circuit (3) which supplies the drive unit (4) and, depending on the determined state of charge, to adjust electrical power consumption by the electric motor (2) such that a critical state of charge of the intermediate circuit capacitor (5) can be avoided.

Abstract: Actuator for operating a valve, including: a drive component; a drive shaft, which is connectable with the valve; and a torque lock, which is connectable with the drive shaft The torque lock includes at least one essentially rotationally symmetric spring element arranged in a ring-shaped housing, and is so constructed that a torque introduced via the drive component causes the drive shaft to rotate, and a torque introduced via the valve blocks rotation of the drive shaft.

Abstract: An apparatus for automation technology, comprising an actuator and an assembly for manual actuation of the actuator, wherein an electrical drive or an electro hydraulic drive is provided as the driving element for the actuator. The assembly includes a generator and a manual actuating element for the generator and wherein the assembly can be electrically coupled with the driving element of the actuator.

Abstract: A measuring system for registering the absolute rotation angle of a rotating, measured object, wherein a first gear is associated with a shaft of the measured object, wherein the first gear directly or indirectly engages at least a second gear and a third gear and wherein tooth counts the individual gears differ from one another. There is associated with each gear a rotation angle sensor, which registers the rotation angle of the associated gear. A calculating unit is provided, which ascertains at least the difference between the rotation angle of the second gear and that of the first gear and the difference between the rotation angle of the third gear and that of the first gear and, based on a summing of the differences of the ascertained rotation angle of the gears, determines the number of whole numbered revolutions and the remainder rotation angle of the shaft of the measured object.

Abstract: An apparatus for converting a rotational movement into an axial movement. A threaded rod is provided, on which a nut is arranged to be movable axially to the threaded rod. At least one blocking structure is provided, which is so arranged that it blocks rotational movement of the nut during the axial movement along the threaded rod. There is provided on the threaded rod at least one end stop, which limits axial movement of the nut along the threaded rod. Between the axially movable nut and the end stop, a wedge lock washer pair is arranged. The wedge lock washer pair is so embodied that the wedge lock washers are brought into engagement by the pressing of the nut against the end stop and produce a prestress torque, wherein torque for releasing the nut from the end stop is smaller, essentially by the prestress torque of the wedge lock washer pair, than the torque applied as the nut first pressed against the end stop.

Abstract: A mechanical brake having an axial shifting mechanism arranged on an input drive shaft and an axial shifting mechanism arranged on an output drive shaft. The two axial shifting mechanisms are so embodied that their shifting directions are opposed and that, upon introduction of a torque via the input drive shaft and/or the output drive shaft, the axial shifting mechanism associated with the input drive shaft has precedence over the axial shifting mechanism associated with the output drive shaft.

Abstract: A mechanical brake having an axial shifting mechanism arranged on an input drive shaft and an axial shifting mechanism arranged on an output drive shaft. The two axial shifting mechanisms are so embodied that their shifting directions are opposed and that, upon introduction of a torque via the input drive shaft and/or the output drive shaft, the axial shifting mechanism associated with the input drive shaft has precedence over the axial shifting mechanism associated with the output drive shaft.

Abstract: actuator for operating a valve, including: a drive component; a drive shaft, which is connectable with the valve; and a torque lock, which is connectable with the drive shaft The torque lock includes at least one essentially rotationally symmetric spring element arranged in a ring-shaped housing, and is so constructed that a torque introduced via the drive component causes the drive shaft to rotate, and a torque introduced via the valve blocks rotation of the drive shaft.