Adjusting device and method for adjusting switching device mechanisms

Patent metadata

Field	Value
Publication number	US-11289290-B2
Application number	US-201917049089-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Apr 20, 2018
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

An adjusting device adjusts the stroke of a vacuum switching tube and the bias of a contact compression spring of a switching device mechanism, the spring being paired with the vacuum switching tube, for a medium-voltage switch and/or high-voltage switch. The adjusting device can be driven by a switch shaft, the switch shaft is connected to a transmission element via a connection element, and the transmission element can be connected to a movable switch contact of a medium-voltage switch and/or a high-voltage switch. The transmission element is arranged in a rotatable manner and in a laterally movable manner in the connection element along a recess.

First claim

The invention claimed is:

1. An adjusting device tor adjusting a stroke of a vacuum switching tube and a bias of a contact pressure spring for medium-voltage switches and/or high-voltage switches, the adjusting device being driven by way of a switch shaft, the adjusting device comprising:
a switching apparatus mechanism having said contact pressure spring, a transmission element and a connection element with a recess formed therein, said contact pressure spring being assigned to the vacuum switching tube, the switch shaft by way of said connection element is connected to said transmission element, and said transmission element is able to be connected to a movable switch contact of a medium-voltage switch and/or a high-voltage switch, said transmission element is rotatable and disposed so as to be laterally displaceable along said recess in said connection element, said contact pressure spring is disposed on said connection element in such a manner that said contact pressure spring acts on a laterally displaceable end of said transmission element, said laterally displaceable end of said transmission element in a switched-off position assumes a first terminal position, and in a switched-on position assumes a second terminal position, said laterally displaceable end by a switching process of said switching apparatus mechanism is able to be transferred from the first terminal position to the second terminal position and/or from the second terminal position to the first terminal position; and
said switching apparatus mechanism further having a readjustable detent acting on said laterally displaceable end of said transmission element in such a manner that a readjustment of said readjustable detent causes a displacement of the first terminal position and thus a variation of a stroke of the vacuum switching tube and of the bias of said contact pressure spring which is assigned to the vacuum switching tube.

2. The adjusting device according to claim 1 , wherein said readjustable detent is formed by an eccentric or a displaceable elongate detent element.

3. The adjusting device according to claim 2 , wherein said eccentric has a non-structured face for adjusting in a stepless manner the stroke of the vacuum switching tube and the bias of said contact pressure spring which is assigned to the vacuum switching tube.

4. The adjusting device according, to claim 2 , wherein said eccentric has a structured face for adjusting in a stepped manner the stroke of the vacuum switching tube and the bias of said contact pressure spring which is assigned to the vacuum switching tube.

5. The adjusting device according to claim 4 , wherein said
the structured face of said eccentric is configured as a crown gear.

6. The adjusting device according to claim 2 , wherein said eccentric has a non-structured face for adjusting in a stepless manner and a structured face for adjusting in a stepped manner the stroke of the vacuum switching tube and the bias of said contact pressure spring which is assigned to the vacuum switching tube.

7. The adjusting device according to claim 1 , further comprising a locking means, said readjustable detent by said locking means is fastened in such a manner that said readjustable detent is not able to be readjusted without releasing said locking means.

8. The adjusting device according to claim 7 , wherein:
said locking means is formed by a peg and/or a screw; and/or
said locking means is formed by said peg and/or said screw which in addition to a central point of rotation of said readjustable detent is disposed eccentrically on said readjustable detent.

9. The adjusting device according to claim 1 , wherein said contact pressure spring is formed by way of a compression spring and/or a tension spring.

10. The adjusting device according to claim 1 , wherein said readjustable detent is provided with a graduation which correlates with an adjustment position of the stroke or of a variation of the stroke of the vacuum switching tube.

11. A switching system, comprising:
at least one vacuum switching tube; and
the adjusting device according to claim 1 .

12. A method for simultaneously adjusting a stroke of a vacuum switching tube and a bias of a contact pressure spring of a switching apparatus mechanism for medium-voltage switches and/or high-voltage switches, the contact pressure spring being assigned to the vacuum switching tube, which comprises the steps of:
driving an adjusting device by way of a switch shaft, the switch shaft by way of a connection element is connected to a transmission element, and the transmission element is able to be connected to a movable switch contact of a medium-voltage switch and/or a high-voltage switch, wherein the transmission element is rotatable and disposed so as to be laterally displaceable along a recess in the connection element, and the contact pressure spring is disposed on the connection element in such a manner that the contact pressure spring acts on a laterally displaceable end of the transmission element, and the laterally displaceable end of the transmission element in a switched-off position assumes a first terminal position, and in a switched-on position assures a second terminal position, and the laterally displaceable end by a switching process of the switching apparatus mechanism is able to be transferred from the first terminal position to the second terminal position and/or from the second terminal position to the first terminal position; and
adjusting a readjustable detent to act on the laterally displaceable end of the transmission element in such a manner that a readjustment of the readjustable detent causes a displacement of the first terminal position and thus a variation of the stroke of the vacuum switching tube and of the bias of a contact pressure spring which is assigned to the vacuum switching tube.

13. The method according to claim 12 , wherein the readjustable detent is adjusted when the switching apparatus mechanism of the adjusting device is situated in the switched-on position and/or is secured in the switched-on position, or the readjustable detent is adjusted when the switching apparatus mechanism of the adjusting device is situated in the switched-off position and the adjustment of the readjustable detent takes place counter to the biased contact pressure spring.

14. The method according to claim 13 , wherein the adjustment of the readjustable detent takes place without applying force.

Assignees

• Siemens Ag

Inventors

• Einschenk Juergen
• Knabe Thomas
• Last Philipp
• Koehler Sandro

Classifications

• H01H1/50

  Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position · CPC title

• H01H33/666 Primary

  Operating arrangements · CPC title

• H01H33/42 Primary

  Driving mechanisms · CPC title