Control equipment

Patent metadata

Field	Value
Publication number	US-10161490-B2
Application number	US-201515129933-A
Country	US
Kind code	B2
Filing date	Apr 7, 2015
Priority date	Apr 4, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

Control equipment for generating a rotational travel motion from a rotational drive motion includes a drive shaft, an intermediate body, a reference body, and an output body that are movable relative to each other. The control equipment includes a first transmission and a second transmission, which is different from the first transmission. The first transmission transforms a rotational movement of the drive shaft relative to the reference body into a linear motion component of the intermediate body relative to the reference body, and the control equipment has a displacement line along which the intermediate body moves via the linear motion component of the intermediate body relative to the reference body. The second transmission transforms the linear motion component of the intermediate body relative into a rotational movement of the output body relative to the reference body.

First claim

The invention claimed is:

1. An actuation device for producing a rotational actuation movement from a rotational drive movement for rotational adjustment of a valve, comprising a drive shaft, an intermediate body, a reference body and a driven body, wherein the drive shaft, intermediate body, reference body, and driven body of the actuation device are movable relative to one another, said actuation device also comprising a first transmission and a second transmission, which is different from the first transmission, wherein
the first transmission converts a rotational movement of the drive shaft relative to the reference body into a linear movement component of the intermediate body relative to the reference body,
the actuation device has a displacement line, along which the intermediate body moves by way of the linear movement component of the intermediate body relative to the reference body and
the second transmission comprises a transmission of a second type, wherein the transmission of the second type converts the linear movement component of the intermediate body relative to the reference body into a rotational movement of the driven body relative to the reference body and converts a linear movement component of the intermediate body relative to the driven body into a rotational movement of the intermediate body relative to the driven body.

2. The actuation device according to claim 1 , wherein the second transmission comprises a transmission of a first type, wherein the transmission of the first type converts the linear movement component of the intermediate body relative to the reference body into a rotational movement of the intermediate body relative to the reference body.

3. The actuation device according to claim 1 , wherein a drive axis is arranged coaxially to the drive output axis, wherein the drive shaft rotates about the drive axis given the rotational movement, and the driven body rotates about the drive output axis given the rotational movement.

4. The actuation device according to claim 1 , wherein the displacement line is arranged parallel to a drive output axis, and wherein the driven body rotates about the drive output axis given the rotational movement.

5. The actuation device according to claim 1 , wherein at least one of the first and second transmissions comprise a helical transmission that is arranged for the conversion of the rotational movements or of the linear movement component.

6. The actuation device according to claim 1 , wherein the drive shaft is mounted on the reference body in a translatorily fixed, but rotatable manner, and the driven body is also mounted on the reference body in a translatorily fixed, but rotatable manner.

7. The actuation device according to claim 1 , wherein the actuation device comprises an electrical drive that is arranged for driving the drive shaft.

8. An actuation device for producing a rotational actuation movement from a rotational drive movement for rotational adjustment of a valve, comprising a drive shaft, an intermediate body, a reference body and a driven body, wherein the drive shaft, intermediate body, reference body, and driven body of the actuation device are movable relative to one another, said actuation device also comprising a first transmission and a second transmission, which is different from the first transmission, wherein
the first transmission converts a rotational movement of the drive shaft relative to the reference body into a linear movement component of the intermediate body relative to the reference body,
the actuation device has a displacement line, along which the intermediate body moves by way of the linear movement component of the intermediate body relative to the reference body and
the second transmission converts the linear movement component of the intermediate body relative to the reference body into a rotational movement of the driven body relative to the reference body,
wherein a drive of the drive shaft is fastened to the driven body in a rotationally fixed and translatorily fixed manner.

9. An actuation device for producing a rotational actuation movement from a rotational drive movement for rotational adjustment of a valve, comprising a drive shaft, an intermediate body, a reference body and a driven body, wherein the drive shaft, intermediate body, reference body, and driven body of the actuation device are movable relative to one another, said actuation device also comprising a first transmission and a second transmission, which is different from the first transmission, wherein
the first transmission converts a rotational movement of the drive shaft relative to the reference body into a linear movement component of the intermediate body relative to the reference body,
the actuation device has a displacement line, along which the intermediate body moves by way of the linear movement component of the intermediate body relative to the reference body and
the second transmission converts the linear movement component of the intermediate body relative to the reference body into a rotational movement of the driven body relative to the reference body,
wherein in a first position of the actuation device, a drive of the drive shaft is essentially spatially surrounded by the intermediate body, and in a second position of the actuation device, which is different from the first position, the drive of the drive shaft is located essentially outside the intermediate body.

10. The actuation device according to claim 1 , wherein the intermediate body at least in regions is designed as a hollow cylinder that is arranged coaxially to a drive output axis, wherein the driven body rotates about the drive output axis given the rotational movement.

11. The actuation device according to claim 1 , wherein at least one of the first and second transmissions comprises a helical transmission in the form of a plane bearing, comprising a helicoidal guide and a counter element of the helicoidal guide that are movable on one another and relative to one another by way of sliding friction.

12. The actuation device according to claim 1 , wherein the drive shaft comprises a drive and an interface, at which interface the drive shaft can be driven by auxiliary means arranged outside the actuation device.

13. The actuation device according to claim 1 , wherein the driven body has a maximal rotational degree of freedom of 400 degrees, in the direction of its rotational movement.

14. The actuation device according to claim 1 , wherein a ratio of transmission between the rotational movement of the drive shaft and the rotational movement of the driven body lies in a range of 20:1 to 800:1.

15. A device comprising a fail-safe mechanism and an actuation device according to claim 12 , wherein the fail-safe mechanism is designed in a manner separable from the actuation device and comprises an energy store that keeps available an adequate amount of stored energy, in order to drive the actuation device at least for one actuation movement.

16. The actuation device according to claim 11 , wherein at least one helicoidal guide of the helical transmission as well as its counter-element each comprise a flank, and the respective flank in section planes perpendicular to a rotation axis of the rotational movement of the driven body run essentially radially with respect to this rotation axis.

17. The actuation device according to claim 16 , wherein the helical transmission comprises a first and a second helicoidal guide as well as their counter-elements, wherein
in section planes perpendicular to the rotation axis of the rotational move

Assignees

• Festo Ag & Co Kg

Inventors

• Stoll Kurt
• Riek Alfons
• Sigrist Martin
• Mock Elmar
• Malzach Samuel

Classifications

• H02K37/24

  Structural association with auxiliary mechanical devices · CPC title

• H02K7/06

  Means for converting reciprocating motion into rotary motion or vice versa · CPC title

• F16H25/20 Primary

  Screw mechanisms (with automatic reversal F16H25/12) · CPC title

• F16K31/043

  characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means · CPC title

• F16H25/205 Primary

  comprising alternate power paths, e.g. for fail safe back-up · CPC title