A drive device serves for adjusting an operating element for a valve, a throttle, a blow-out preventor or the like, in particular in the field of gas and oil production, the operating element being actively connected to at least one driving motor via a drive train, and at least one transmission changing unit being arranged in the drive train for converting a revolution of the driving motor into a revolution of the operating element and/or a revolution/linear motion converter being arranged for converting the revolution of the driving motor into a linear motion of the operating element. In order to also have a very compact design in case of a high possible performance and to simultaneously permit a good thermal distribution within the drive device, so that separate cooling devices for carrying off the generated lost heat are superfluous, the drive train comprises at least one essentially disk- or wheel-shaped revolution introducing device which is actively connected with at least two drive shafts driven by separate driving motors.
1. Drive device for adjusting an operating element in a component used in the field of gas or oil exploitation and/or production, comprising:
driving motors;
a drive train actively connecting the operating element with the driving motors, the drive train comprising:
at least two drive shafts, each drive shaft comprising a worm gear arranged essentially centrically on the drive shaft and each respective drive shaft rotatable by separate driving motors at each end;
at least one worm wheel actively connected with and rotated by the at least two drive shafts; and
at least one transmission changing unit driven by the at least one worm wheel for converting a revolution of the driving motors into a revolution of the operating element and comprising a step-down gear unit.
2. Drive device according to claim 1 , characterized in that each drive shaft is arranged perpendicularly to the longitudinal direction of the operating element.
3. Drive device according to claim 1 , characterized in that a positioning sensor is assigned to the revolution introducing device.
4. Drive device according to claim 1 , characterized in that the drive shafts are synchronized by a mechanical coupling device.
5. Drive device according to claim 1 , characterized in that the driving motors are electrically synchronized.
6. Drive device according to claim 1 , characterized in that the worm wheel is actively connected with a mechanical coupling device.
7. Drive device according to claim 1 , wherein at least one of the driving motors and the at least two drive shafts are synchronized.
8. Drive device for adjusting an operating element in a component used in the field of gas or oil exploitation and/or production, comprising:
driving motors;
a drive train actively connecting the driving motors and the operating element and comprising:
at least two drive shafts, each drive shaft comprising a worm gear arranged essentially centrically on the drive shaft and each respective drive shaft rotatable by separate driving motors on each end;
at least one worm wheel actively connected with and driven b the at least two drive shafts;
at least one transmission changing unit driven by the at least one worm wheel for converting a revolution of the driving motor into a revolution of the operating element; and a revolution/linear motion converter being arranged for converting the revolution of the driving motor into a linear motion of the operating element and comprising a step-down gear unit.
9. Drive device according to claim 8 , characterized in that the worm is placed on said at least two drive shafts in a detachable fashion.
10. Drive device according to claim 8 , characterized in that the drive train comprises a rotating spindle and/or a recirculating ball nut.