EP1891653B1 - Energy store - Google Patents

Energy store Download PDF

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Publication number
EP1891653B1
EP1891653B1 EP06753459A EP06753459A EP1891653B1 EP 1891653 B1 EP1891653 B1 EP 1891653B1 EP 06753459 A EP06753459 A EP 06753459A EP 06753459 A EP06753459 A EP 06753459A EP 1891653 B1 EP1891653 B1 EP 1891653B1
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EP
European Patent Office
Prior art keywords
carriage
roller
movement
rollers
jumping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06753459A
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German (de)
French (fr)
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EP1891653A1 (en
Inventor
Klaus Hoepfl
Gregor Wilhelm
Silke Wrede
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP1891653A1 publication Critical patent/EP1891653A1/en
Application granted granted Critical
Publication of EP1891653B1 publication Critical patent/EP1891653B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms

Definitions

  • the invention relates to a power storage for an on-load tap-changer.
  • On-load tap-changers are used for uninterrupted switching between different winding taps of a tapped transformer under load. Since this changeover usually takes place abruptly, on-load tap-changers generally have a force store.
  • Such an energy storage is from the DE-PS 19 56 369 as well as the DE-PS 28 06 282 already known. He is raised at the beginning of each actuation of the on-load tap changer by the drive shaft, that is stretched.
  • the known power storage essentially consists of an elevator carriage and a jump carriage, between which power storage springs are arranged as energy storage.
  • the guide rods are provided on which elevator carriage and jump carriage are mounted longitudinally movable independently.
  • the guide rods form the guide for the force-storing springs, such that in each case one force-storing spring encloses a guide rod in each case.
  • the elevator carriage is moved linearly relative to the skid carriage by means of an eccentric connected to the drive shaft, thereby tensioning the energy storage springs therebetween. If the elevator carriage has reached its new end position, the locking of the jump carriage is released. This follows now abruptly, as standing under the force of the tensioned power storage springs, the previous linear movement of the elevator carriage also linearly. From the aforementioned DE-PS 19 56 369 and DE-PS 28 06 282 It is known to convert this jump-like movement of the jump carriage by means of a roller which engages in a groove in a rotational movement of an output shaft.
  • the object of the invention is to provide a force accumulator of the type mentioned above, in a simple manner, a variation of the torque curve on the output shaft, d. H. after the conversion of the longitudinal movement of the jump carriage in a rotational movement allowed.
  • a force accumulator of the type mentioned above in a simple manner, a variation of the torque curve on the output shaft, d. H. after the conversion of the longitudinal movement of the jump carriage in a rotational movement allowed.
  • the force accumulator according to the invention with its arrangement of two rollers in conjunction with the likewise inventive interaction of these roles with a specially designed backdrop in which the rollers are guided and with their flanks mutually engaged, allows within wide limits an adjustment of the specific time and torque curves of the derived from the linear jump movement of the jump carriage rotational movement of a drive shaft to a variety of circuits and operating sequences.
  • the transmission ratio of the energy storage, both torque and speed, can be easily changed by the distance between the two roles.
  • the inventive arrangement in particular at the end of the movement of the jump carriage and thus the drive shaft, when the switching of the on-load tap-changer is completed, provided a high torque.
  • FIGS. 1 and 2 show a force storage device according to the invention in different representations, not all items described below in more detail in each representation and thus not all reference numerals are entered. In addition, in the FIG. 1 omitted the power storage springs for better presentation.
  • an eccentric disc 1 which is connected to a drive shaft, which is not shown, is also provided in the force accumulator described here, which actuates an elevator carriage 3 by moving it up and down in the direction of movement of the elevator carriage 3 arranged Mit Meetingklötze 2 acts.
  • the energy storage device has in this embodiment, three parallel extending, along the direction of movement of the elevator carriage 3 extending guide rods 4, 5 and 6, in which case two of them are enclosed by power storage springs 8. Also, a different number of guide rods and power storage springs is possible within the scope of the invention.
  • the elevator slide 3 has at its two ends linear bearing 7, these enclose one of the guide rods 4 or 5 or 6. With these linear bearings of the elevator slide 3 is stably supported and guided defined in its movement.
  • the power storage springs 8 are fixed in the direction of movement above or below in each case a displaceable spring bar with one of its ends and are supported there.
  • a boom 11 On the jump carriage 9, at the lower, the elevator carriage 3 side facing away, a boom 11 is fixed, which carries two downwardly directed rollers 12, 13. These rollers 12, 13 are arranged so that they are in a horizontal plane in a line perpendicular to the direction of movement of the jump carriage 9.
  • FIG. 4 The direction of movement of the boom 11 shown there, which corresponds to that of the jump carriage 9, is illustrated by a double arrow.
  • the two rollers 12, 13 are mounted on the boom 11.
  • the free, downwardly directed rollers themselves are rotatable.
  • the two rollers 12, 13 correspond with a specially designed gate 14, which is incorporated in the form of a groove in a flywheel 15.
  • the specially designed gate 14 will be explained in more detail below.
  • the flywheel 15 described in turn is connected to an output hub 18 in connection, which has a spline 19, which in turn is connected to an output shaft, not shown, which transmits the rotary motion generated on the on-load tap changer and thereby actuated.
  • the already mentioned gate 14 has an inner contour 16 and an outer contour 17, wherein in the middle region both contours 16, 17 are not parallel.
  • the inner width of the gate 14 is not constant, but changes.
  • the gate 14 has a Y-shaped contour, wherein the distance between the inner contour 16 and the outer contour 17 in the region of the outer regions of the three legs of the Y is approximately constant and corresponds to the diameter of the rollers 12, 13 at least approximately.
  • the width of the gate 14 increases, so that in this area one of the two rollers 12 or 13 is freely movable.
  • a drive shaft begins to rotate, with her the eccentric 1, which slides on the corresponding driver block 2 and thus the elevator carriage 3 in the longitudinal direction on the guide rods 4, 5, 6 shifts , As a result, the power storage springs 8 are tensioned. If the elevator carriage 3 has almost reached its new end position, these force storage springs 8 are maximally biased. Up to this time, the jumping carriage 9 is still locked so that it can not follow the movement of the elevator carriage 3. Shortly before the new end position of the elevator carriage 3, the lock is then triggered by a suitable actuator. This is known in principle from the prior art.
  • the linear movement of the jump carriage 9 is inventively transmitted by the two rollers 12, 13 in three temporally successive sections in a rotary motion of the flywheel 15: First, by a positive connection of the first roller 12 in the gate 14 at free-running second roller 13, then a positive connection of the second roller 13 in the gate 14 at free-running first roller 12, finally again by a positive connection of the first roller 12 in the gate 14 at free-running second roller 13th
  • Due to the mass of the flywheel 15 can be carried out in a particularly advantageous manner, a homogenization of the rotary motion generated.
  • the invention described conversion of the linear into a rotary motion results in the power storage several advantages: First of all, a variable ratio is given in a simple manner; the torque is particularly high at the beginning and at the end of the operation of the on-load tap-changer, when it is needed. Especially at the end of each change, a high torque is important to ensure that the end position of the energy accumulator is safely reached, it is reliably latched in this end position and thus the on-load tap-changer reaches its new stationary position after the switchover.
  • the invention takes into account the invention.
  • the gate 14 is variable in terms of their geometry within wide limits.
  • Inner contour 16 and outer contour 17 can be varied in shape and in their distance from one another in many ways. This adaptation to the most varied switching sequences and operating sequences of various on-load tap-changer is possible.

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  • Transmission Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Saccharide Compounds (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Replacement Of Web Rolls (AREA)
  • Types And Forms Of Lifts (AREA)
  • Automatic Disk Changers (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Eletrric Generators (AREA)
  • Harvester Elements (AREA)

Abstract

An energy storage device has a power storage spring provided between an elevator slide and a step-change slide. On the face of the step-change slide (9) facing the drive shaft, are two rollers (12,13), which run in a rotatable link (14), where the link has inner- and outer shapes which during the first part of the movement of the step-change slide (9), initially carries the first roller (12) tightly into the link, and the second roller is freely moveable. A second part of each movement of the step-change slide (9) the freely movable second roller (13) is tightly carried, and the first roller (12) is freely movable, and during a third part of the movement, the first roller (12) is carried tightly and the second roller (13) is freely movable.

Description

Die Erfindung betrifft einen Kraftspeicher für einen Laststufenschalter.The invention relates to a power storage for an on-load tap-changer.

Laststufenschalter dienen zur unterbrechungslosen Umschaltung zwischen verschiedenen Wicklungsanzapfungen eines Stufentransformators unter Last. Da diese Umschaltung üblicherweise sprungartig erfolgt, besitzen Laststufenschalter in der Regel einen Kraftspeicher.On-load tap-changers are used for uninterrupted switching between different winding taps of a tapped transformer under load. Since this changeover usually takes place abruptly, on-load tap-changers generally have a force store.

Ein solcher Kraftspeicher ist aus der DE-PS 19 56 369 sowie der DE-PS 28 06 282 bereits bekannt. Er wird zu Beginn jeder Betätigung des Laststufenschalters von dessen Antriebswelle aufgezogen, d. h. gespannt. Der bekannte Kraftspeicher besteht im Wesentlichen aus einem Aufzugsschlitten und einem Sprungschlitten, zwischen denen Kraftspeicherfedern als Energiespeicher angeordnet sind.Such an energy storage is from the DE-PS 19 56 369 as well as the DE-PS 28 06 282 already known. He is raised at the beginning of each actuation of the on-load tap changer by the drive shaft, that is stretched. The known power storage essentially consists of an elevator carriage and a jump carriage, between which power storage springs are arranged as energy storage.

Beim bekannten Kraftspeicher sind Führungsstangen vorgesehen, auf denen Aufzugsschlitten als auch Sprungschlitten unabhängig voneinander längsbeweglich gelagert sind. Gleichzeitig bilden die Führungsstangen die Führung für die Kraftspeicherfedern, derart, dass jeweils eine Kraftspeicherfeder jeweils eine Führungsstange umschließt.In the known power storage guide rods are provided on which elevator carriage and jump carriage are mounted longitudinally movable independently. At the same time, the guide rods form the guide for the force-storing springs, such that in each case one force-storing spring encloses a guide rod in each case.

Der Aufzugsschlitten wird durch einen mit der Antriebswelle verbundenen Exzenter linear relativ zum Sprungsschlitten hin bewegt, dadurch werden die dazwischen befindlichen Kraftspeicherfedern gespannt. Hat der Aufzugsschlitten seine neue Endposition erreicht, wird die Arretierung des Sprungsschlittens gelöst. Dieses folgt nun sprungartig, da unter der Kraft der gespannten Kraftspeicherfedern stehend, der vorangegangenen linearen Bewegung des Aufzugsschlittens ebenfalls linear nach. Aus den eingangs genannten DE-PS 19 56 369 und DE-PS 28 06 282 ist es bekannt, diese sprungartige Bewegung des Sprungschlittens mittels einer Rolle, die in eine Nut eingreift, in eine Drehbewegung einer Abtriebswelle umzuwandeln. Diese bekannte Art der Umwandlung einer Längs- in eine Drehbewegung mittels einer sich drehenden Rolle oder eines Gleitsteins hat den Nachteil, dass am Anfang jeder Bewegung relativ wenig Kraft zur Verfügung steht, etwa in der Mitte jeder Bewegung die Kraft ihr Maximum erreicht und zum Bewegungsende hin wieder abfällt. Dieser Drehmomentverlauf ist für bestimmte Schaltungen, bei denen bei jeder Betätigung eine Vielzahl von Kontakten in einer vorbestimmten Betätigungssequenz nacheinander betätigt werden müssen, ungeeignet. Durch das am Ende der Umschaltung nur noch geringe zur Verfügung stehende Drehmoment besteht außerdem die Gefahr, dass der Laststufenschalter seine Endposition nicht mit Sicherheit erreicht.The elevator carriage is moved linearly relative to the skid carriage by means of an eccentric connected to the drive shaft, thereby tensioning the energy storage springs therebetween. If the elevator carriage has reached its new end position, the locking of the jump carriage is released. This follows now abruptly, as standing under the force of the tensioned power storage springs, the previous linear movement of the elevator carriage also linearly. From the aforementioned DE-PS 19 56 369 and DE-PS 28 06 282 It is known to convert this jump-like movement of the jump carriage by means of a roller which engages in a groove in a rotational movement of an output shaft. This known way of converting a longitudinal to a rotational movement by means of a rotating roller or a sliding block has the disadvantage that at the beginning of each movement relatively little force is available, approximately in the middle of each movement, the force reaches its maximum and towards the end of movement falls again. This torque curve is unsuitable for certain circuits in which a large number of contacts must be actuated sequentially in each actuation in a predetermined actuation sequence. Due to the low torque available at the end of the changeover, there is also the risk that the on-load tap-changer will not reach its end position with certainty.

Aus der WO 02/31847 ist es weiterhin bekannt, die Längsbewegung des Sprungschlittens mittels einer Verzahnung, in die ein mit der Abtriebswelle verbundenes Zahnrad eingreift, in eine Drehbewegung umzuwandeln. Bei dieser Art der Bewegungsumwandlung ergibt sich eine konstante Kraftentfaltung, was für bestimmte Schaltsequenzen ebenfalls nicht vorteilhaft ist. Außerdem lässt sich der konstante Drehmomentverlauf nicht variieren.From the WO 02/31847 It is also known that the longitudinal movement of the jump carriage by means of a toothing, in which engages a gear connected to the output shaft gear to convert into a rotational movement. In this type of motion conversion results in a constant power delivery, which is also not advantageous for certain switching sequences. In addition, the constant torque curve can not be varied.

Aufgabe der Erfindung ist es, einen Kraftspeicher der eingangs genannten Art anzugeben, der auf einfache Weise eine Variierung des Drehmomentverlaufes an der Abtriebswelle, d. h. nach der Umwandlung der Längsbewegung des Sprungschlittens in eine Drehbewegung, gestattet. Insbesondere soll es möglich sein, mit einfachen technischen Mitteln zu erreichen, dass sich die Übersetzungsverhältnisse variieren lassen und dass am Ende der Schaltung ein hohes Drehmoment zur Verfügung steht, das sicherstellt, dass unter allen Umständen die Endposition sicher erreicht wird und der Kraftspeicher wieder verklinkt.The object of the invention is to provide a force accumulator of the type mentioned above, in a simple manner, a variation of the torque curve on the output shaft, d. H. after the conversion of the longitudinal movement of the jump carriage in a rotational movement allowed. In particular, it should be possible to achieve with simple technical means that can vary the gear ratios and that at the end of the circuit, a high torque is available, which ensures that under all circumstances, the final position is reached safely and the power storage latched again.

Diese Aufgabe wird durch einen Kraftspeicher mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche betreffen besonders vorteilhafte Weiterbildungen der Erfindung.This object is achieved by a force accumulator with the features of the first claim. The subclaims relate to particularly advantageous developments of the invention.

Der erfindungsgemäße Kraftspeicher mit seiner Anordnung von zwei Rollen in Verbindung mit dem ebenfalls erfindungsgemäßen Zusammenspiel dieser Rollen mit einer besonders gestalteten Kulisse, in der die Rollen geführt sind und mit deren Flanken sie wechselseitig in Eingriff gelangen, gestattet in weiten Grenzen eine Anpassung der spezifischen Zeit- und Drehmomentverläufe der aus der linearen Sprungbewegung des Sprungschlittens abgeleiteten Drehbewegung einer Antriebswelle an unterschiedlichste Schaltungen und Betätigungssequenzen. Das Übersetzungsverhältnis des Kraftspeichers, sowohl Drehmoment als auch Geschwindigkeit, kann durch den Abstand der beiden Rollen auf einfache Weise verändert werden.The force accumulator according to the invention with its arrangement of two rollers in conjunction with the likewise inventive interaction of these roles with a specially designed backdrop in which the rollers are guided and with their flanks mutually engaged, allows within wide limits an adjustment of the specific time and torque curves of the derived from the linear jump movement of the jump carriage rotational movement of a drive shaft to a variety of circuits and operating sequences. The transmission ratio of the energy storage, both torque and speed, can be easily changed by the distance between the two roles.

Durch die erfindungsgemäße Anordnung wird insbesondere auch am Ende der Bewegung des Sprungsschlittens und damit der Antriebswelle, wenn die Umschaltung des Laststufenschalters fasst vollzogen ist, ein hohes Drehmoment bereitgestellt.The inventive arrangement, in particular at the end of the movement of the jump carriage and thus the drive shaft, when the switching of the on-load tap-changer is completed, provided a high torque.

Die Erfindung soll nachfolgend an Hand von Zeichnungen beispielhaft noch näher erläutert werden.The invention will be explained in more detail by way of example with reference to drawings.

Es zeigen:

Figur 1
einen erfindungsgemäßen Kraftspeicher in perspektivischer Darstellung schräg von oben
Figur 2
den gleichen Kraftspeicher in anderer perspektivischer Darstellung schräg von unten
Figur 3
die Rollenanordnung des erfinderischen Kraftspeichers allein von oben
Figur 4
diese Rollenanordnung in schematischer perspektivischer Darstellung schräg von oben.
Show it:
FIG. 1
an energy storage device according to the invention in a perspective view obliquely from above
FIG. 2
the same power storage in another perspective view obliquely from below
FIG. 3
the roller assembly of the inventive energy storage alone from above
FIG. 4
this roller assembly in a schematic perspective view obliquely from above.

Die Figuren 1 und 2 zeigen einen erfindungsgemäßen Kraftspeicher in unterschiedlichen Darstellungen, wobei nicht in jeder Darstellung alle nachfolgend näher beschriebenen Einzelteile erkennbar und damit auch nicht alle Bezugszeichen eingetragen sind. Zudem sind in der Figur 1 die Kraftspeicherfedern der besseren Darstellung wegen weggelassen.The FIGS. 1 and 2 show a force storage device according to the invention in different representations, not all items described below in more detail in each representation and thus not all reference numerals are entered. In addition, in the FIG. 1 omitted the power storage springs for better presentation.

Wie aus dem eingangs genannten Stand der Technik bekannt, ist auch beim hier beschriebenen Kraftspeicher eine mit einer Antriebswelle, die nicht dargestellt ist, in Verbindung stehende Exzenterscheibe 1 vorgesehen, die einen Aufzugsschlitten 3 betätigt, indem sie auf in Bewegungsrichtung des Aufzugsschlittens 3 oben und unten angeordnete Mitnehmerklötze 2 wirkt. Der Kraftspeicher weist in diesem Ausführungsbeispiel drei parallel verlaufende, sich längs der Bewegungsrichtung des Aufzugsschlittens 3 erstreckende Führungsstangen 4, 5 und 6 auf, wobei hier zwei davon von Kraftspeicherfedern 8 umschlossen sind. Auch eine andere Zahl von Führungsstangen und Kraftspeicherfedern ist im Rahmen der Erfindung möglich. Der Aufzugsschlitten 3 weist an seinen beiden Enden Linearlager 7 auf, diese umschließen jeweils eine der Führungsstangen 4 oder 5 oder 6. Mit diesen Linearlagern ist der Aufzugsschlitten 3 stabil gelagert und bei seiner Bewegung definiert geführt. Die Kraftspeicherfedern 8 werden in Bewegungsrichtung oben bzw. unten in jeweils einem verschiebbaren Federsteg mit einem ihrer Enden fixiert und stützen sich dort ab.As is known from the prior art mentioned above, an eccentric disc 1 which is connected to a drive shaft, which is not shown, is also provided in the force accumulator described here, which actuates an elevator carriage 3 by moving it up and down in the direction of movement of the elevator carriage 3 arranged Mitnehmerklötze 2 acts. The energy storage device has in this embodiment, three parallel extending, along the direction of movement of the elevator carriage 3 extending guide rods 4, 5 and 6, in which case two of them are enclosed by power storage springs 8. Also, a different number of guide rods and power storage springs is possible within the scope of the invention. The elevator slide 3 has at its two ends linear bearing 7, these enclose one of the guide rods 4 or 5 or 6. With these linear bearings of the elevator slide 3 is stably supported and guided defined in its movement. The power storage springs 8 are fixed in the direction of movement above or below in each case a displaceable spring bar with one of its ends and are supported there.

Unterhalb des Aufzugsschlittens 3 ist, in der gleichen Richtung wie dieser längsbeweglich, ein Sprungschlitten 9 geführt. Dieser Sprungschlitten 9 weist an seinen beiden Seiten wiederum Linearlager 10 auf, die ebenfalls jeweils eine der Führungsstangen 4 oder 5 oder 6 umschließen. Im Rahmen der Erfindung sind auch andere konstruktive Gestaltungen von Aufzugsschlitten 3 und Sprungschlitten 9 und deren Lagerungen möglich. Wichtig ist allein, dass Aufzugsschlitten 3 und Sprungschlitten 9 jeweils eine lineare Bewegung vollführen, die in den Figuren durch Doppelpfeile angedeutet ist.Below the elevator carriage 3, in the same direction as this longitudinally movable, a jumping carriage 9 is guided. This jump carriage 9 has on its two sides turn on linear bearings 10, which also each one of the guide rods 4 or 5 or 6 enclose. In the context of the invention, other structural designs of elevator carriage 3 and jump carriage 9 and their bearings are possible. The only important thing is that elevator carriage 3 and jump carriage 9 each perform a linear movement, which is indicated in the figures by double arrows.

Am Sprungschlitten 9 ist, an dessen unterer, dem Aufzugsschlitten 3 abgewandten Seite, ein Ausleger 11 befestigt, der zwei nach unten gerichtete Rollen 12, 13 trägt. Diese Rollen 12, 13 sind derart angeordnet, dass sie sich in einer horizontalen Ebene in einer Linie senkrecht zur Bewegungsrichtung des Sprungschlittens 9 befinden.On the jump carriage 9, at the lower, the elevator carriage 3 side facing away, a boom 11 is fixed, which carries two downwardly directed rollers 12, 13. These rollers 12, 13 are arranged so that they are in a horizontal plane in a line perpendicular to the direction of movement of the jump carriage 9.

Dies ist besonders deutlich aus Figur 4 ersichtlich. Die Bewegungsrichtung des dort gezeigten Auslegers 11, die der des Sprungschlittens 9 entspricht, ist durch einen Doppelpfeil verdeutlicht. In einer senkrecht dazu stehenden Linie sind die beiden Rollen 12, 13 auf dem Ausleger 11 befestigt. Die freien, nach unten gerichteten Rollen selbst sind drehbar.This is especially clear FIG. 4 seen. The direction of movement of the boom 11 shown there, which corresponds to that of the jump carriage 9, is illustrated by a double arrow. In a line perpendicular thereto, the two rollers 12, 13 are mounted on the boom 11. The free, downwardly directed rollers themselves are rotatable.

Die beiden Rollen 12, 13 korrespondieren mit einer besonders ausgebildeten Kulisse 14, die in Form einer Nut in eine Schwungscheibe 15 eingearbeitet ist. Die besonders ausgestaltete Kulisse 14 wird weiter unten noch näher erläutert werden.The two rollers 12, 13 correspond with a specially designed gate 14, which is incorporated in the form of a groove in a flywheel 15. The specially designed gate 14 will be explained in more detail below.

Die beschriebene Schwungscheibe 15 ihrerseits steht mit einer Abtriebsnabe 18 in Verbindung, die einen Vielkeil 19 aufweist, die wiederum mit einer nicht dargestellten Abtriebswelle verbunden ist, die die erzeugte Drehbewegung auf den Laststufenschalter überträgt und diesen dadurch betätigt.The flywheel 15 described in turn is connected to an output hub 18 in connection, which has a spline 19, which in turn is connected to an output shaft, not shown, which transmits the rotary motion generated on the on-load tap changer and thereby actuated.

Die bereits erwähnte Kulisse 14 besitzt eine innere Kontur 16 sowie eine äußere Kontur 17, wobei im mittleren Bereich beide Konturen 16, 17 nicht parallel verlaufen. Mit anderen Worten: Die innere Breite der Kulisse 14 ist nicht konstant, sondern verändert sich. Die Kulisse 14 hat eine Y-förmige Kontur, wobei der Abstand zwischen innerer Kontur 16 und äußerer Kontur 17 im Bereich der äußeren Bereiche der drei Schenkel des Y annähernd konstant ist und dem Durchmesser der Rollen 12, 13 zumindest annähernd entspricht. Damit kann in diesen äußeren Bereichen jeweils eine der beiden Rollen 12, 13 formschlüssig geführt sein. In ihrem mittleren Bereich vergrößert sich die Breite der Kulisse 14, so dass in diesem Bereich eine der beiden Rollen 12 oder 13 frei bewegbar ist.The already mentioned gate 14 has an inner contour 16 and an outer contour 17, wherein in the middle region both contours 16, 17 are not parallel. In other words, the inner width of the gate 14 is not constant, but changes. The gate 14 has a Y-shaped contour, wherein the distance between the inner contour 16 and the outer contour 17 in the region of the outer regions of the three legs of the Y is approximately constant and corresponds to the diameter of the rollers 12, 13 at least approximately. Thus, one of the two rollers 12, 13 can be guided in a form-fitting manner in these outer regions. In its central region, the width of the gate 14 increases, so that in this area one of the two rollers 12 or 13 is freely movable.

Der Bewegungsablauf bei einem Aufzug des erfindungsgemäßen Kraftspeichers ist folgender: Eine nicht dargestellte Antriebswelle beginnt sich kontinuierlich zu drehen, mit ihr die Exzenterscheibe 1, die auf dem entsprechenden Mitnehmerklotz 2 gleitet und somit den Aufzugsschlitten 3 in Längsrichtung auf den Führungsstangen 4, 5, 6 verschiebt. Dadurch werden die Kraftspeicherfedern 8 gespannt. Hat der Aufzugsschlitten 3 annähernd seine neue Endposition erreicht, sind diese Kraftspeicherfedern 8 maximal vorgespannt. Bis zu diesem Zeitpunkt ist der Sprungschlitten 9 noch arretiert, so dass er der Bewegung des Aufzugsschlittens 3 nicht folgen kann. Kurz vor der neuen Endposition des Aufzugsschlittens 3 wird dann durch ein geeignetes Betätigungselement die Arretierung ausgelöst. Dies ist aus dem Stand der Technik prinzipiell bekannt. Im Ergebnis dieser gelösten Arretierung folgt der Sprungschlitten 9 jetzt, bedingt durch die Kraft der gespannten Kraftspeicherfedern 8, sprungartig der Bewegung des Aufzugsschlittens 3 nach. Hat er seine neue Endposition erreicht, erfolgt wieder eine Arretierung, d. h. mechanische Mittel verklinken den Sprungschlitten 9 in der neuen Position wieder; der Kraftspeicher ist bereit für die nächste Schaltung.The sequence of movement in an elevator of the force accumulator according to the invention is as follows: A drive shaft, not shown, begins to rotate, with her the eccentric 1, which slides on the corresponding driver block 2 and thus the elevator carriage 3 in the longitudinal direction on the guide rods 4, 5, 6 shifts , As a result, the power storage springs 8 are tensioned. If the elevator carriage 3 has almost reached its new end position, these force storage springs 8 are maximally biased. Up to this time, the jumping carriage 9 is still locked so that it can not follow the movement of the elevator carriage 3. Shortly before the new end position of the elevator carriage 3, the lock is then triggered by a suitable actuator. This is known in principle from the prior art. As a result of this release lock the jumping carriage 9 now follows, due to the force of the tensioned force storage springs 8, abruptly after the movement of the elevator carriage 3. Has he reached his new end position, is again a lock, d. H. mechanical means latch the jump carriage 9 in the new position again; the energy storage is ready for the next circuit.

Gleichzeitig mit dem ausgelösten Sprungschlitten 9 bewegt sich auch der an diesem befestigte Ausleger 11. Die beiden am Ausleger 11 befestigten Rollen 12, 13 vollziehen auf parallelen Bahnen ebenfalls diese sprungartige lineare Bewegung mit. Zunächst steht eine Rolle 12 im formschlüssigen Eingriff mit der Kulisse 14 der Schwungscheibe 15. Die andere Rolle 13 ist im inneren, breiteren Teil der Kulisse 14 zunächst frei beweglich. Im weiteren Verlauf der linearen Bewegung der beiden Rollen 12, 13 dreht die zunächst im formschlüssigen Eingriff stehende erste Rolle 12 die Schwungscheibe 15, bis die Rolle 12, durch diese Drehung verursacht, den mittleren, breiteren Bereich der Kulisse 14 erreicht. Durch die Drehung der Schwungscheibe 15 verändert sich also die relative Lage der Kulisse 14 in Bezug auf die Rollen 12, 13. In der Folge gerät jetzt die zweite Rolle 13, die bisher frei laufend war, in formschlüssigen Eingriff mit der Kulisse 14 und dreht diese und damit die Schwungscheibe 15 im mittleren Bereich in der gleichen Richtung weiter. Anschließend gelangt wiederum die erste Rolle 12 in formschlüssigen Eingriff, bis die Endstellung erreicht ist. Gleichzeitig gerät die zweite Rolle 13 jetzt wieder außer Eingriff und kann sich ohne Formschluss frei bewegen.Simultaneously with the triggered jump carriage 9 also moves the attached thereto boom 11. The two fixed to the boom 11 rollers 12, 13 complete on parallel paths also this jump-like linear movement with. First, a roller 12 is in positive engagement with the gate 14 of the flywheel 15. The other roller 13 is initially freely movable in the inner, wider part of the link 14. In the further course of the linear movement of the two rollers 12, 13, the first roller 12 initially in positive engagement rotates the flywheel 15 until the roller 12, caused by this rotation, reaches the middle, wider region of the guide 14. The rotation of the flywheel 15 thus changes the relative position of the link 14 with respect to the rollers 12, 13. As a result, now the second roller 13, which was previously free running, in positive engagement with the gate 14 and turns them and thus the flywheel 15 in the middle region in the same direction on. Subsequently, in turn, the first roller 12 passes in positive engagement until the end position is reached. At the same time, the second roller 13 now disengages again and can move freely without positive locking.

Die lineare Bewegung des Sprungschlittens 9 wird erfindungsgemäß durch die beiden Rollen 12, 13 in drei zeitlich aufeinander folgenden Abschnitten in eine Drehbewegung der Schwungscheibe 15 übertragen: Zunächst durch einen Formschluss der ersten Rolle 12 in der Kulisse 14 bei frei laufender zweiter Rolle 13, dann durch einen Formschluss der zweiten Rolle 13 in der Kulisse 14 bei frei laufender erster Rolle 12, schließlich wieder durch einen Formschluss der ersten Rolle 12 in der Kulisse 14 bei frei laufender zweiter Rolle 13.The linear movement of the jump carriage 9 is inventively transmitted by the two rollers 12, 13 in three temporally successive sections in a rotary motion of the flywheel 15: First, by a positive connection of the first roller 12 in the gate 14 at free-running second roller 13, then a positive connection of the second roller 13 in the gate 14 at free-running first roller 12, finally again by a positive connection of the first roller 12 in the gate 14 at free-running second roller 13th

Durch die Masse der Schwungscheibe 15 kann auf besonders vorteilhafte Weise noch eine Vergleichmäßigung der erzeugten Drehbewegung erfolgen.Due to the mass of the flywheel 15 can be carried out in a particularly advantageous manner, a homogenization of the rotary motion generated.

Bei der nächsten Betätigung des Kraftspeichers vollzieht sich der geschilderte Bewegungsablauf von Aufzugsschlitten 3 und Sprungschlitten 9 sowie die Übertragung dessen linearer Bewegung mittels der Rollen 12, 13 und der Kulisse 14 in eine Drehbewegung der Schwungscheibe 15 in die andere Richtung. Die Bewegungsabläufe der einzelnen Bauteile laufen also in entgegengesetzter Richtung ab; der Kraftspeicher besitzt eine linke und eine rechte Endstellung, zwischen denen bei jeder Umschaltung alternierend gewechselt wird.During the next actuation of the energy storage, the described sequence of movements of elevator carriage 3 and jump carriage 9 and the transmission of its linear movement by means of the rollers 12, 13 and the gate 14 in a rotational movement of the flywheel 15 takes place in the other direction. The movements of the individual components thus run in the opposite direction; The energy storage has a left and a right end position, between which alternately changed at each switching.

Durch die beschriebene erfindungsgemäße Umwandlung der linearen in eine Drehbewegung ergeben sich beim Kraftspeicher mehrere Vorteile: Zunächst einmal ist auf einfache Weise eine variable Übersetzung gegeben; das Drehmoment ist gerade am Anfang und am Ende der Betätigung des Laststufenschalters, wenn es benötigt wird, besonders hoch. Besonders am Ende jeder Umschaltung ist ein hohes Drehmoment bedeutsam, um sicherzustellen, dass die Endlage des Kraftspeichers sicher erreicht wird, er in dieser Endlage zuverlässig verklinkt wird und somit der Laststufenschalter seine neue stationäre Position nach der Umschaltung erreicht. Dem trägt die Erfindung Rechnung.The invention described conversion of the linear into a rotary motion results in the power storage several advantages: First of all, a variable ratio is given in a simple manner; the torque is particularly high at the beginning and at the end of the operation of the on-load tap-changer, when it is needed. Especially at the end of each change, a high torque is important to ensure that the end position of the energy accumulator is safely reached, it is reliably latched in this end position and thus the on-load tap-changer reaches its new stationary position after the switchover. The invention takes into account the invention.

Weiterhin ist die Kulisse 14 hinsichtlich ihrer Geometrie in weiten Grenzen variierbar. Innere Kontur 16 als auch äußere Kontur 17 können in ihrer Form als auch in ihrem Abstand zueinander auf vielfältige Weise verändert werden. Damit ist eine Anpassung an unterschiedlichste Schaltabläufe und Betätigungssequenzen der verschiedensten Laststufenschalter möglich.Furthermore, the gate 14 is variable in terms of their geometry within wide limits. Inner contour 16 and outer contour 17 can be varied in shape and in their distance from one another in many ways. This adaptation to the most varied switching sequences and operating sequences of various on-load tap-changer is possible.

Claims (5)

  1. Energy accumulator for an on-load tap changer,
    - wherein a longitudinally movable lifting carriage connected to a drive shaft and a likewise longitudinally movable jumping carriage connected to a driven shaft are provided,
    - wherein at least one energy-accumulating spring is provided between the lifting carriage and the jumping carriage,
    - wherein the lifting carriage is movable in a linear manner in alternatively one of two opposed directions upon each switching of the on-load tap changer by the rotating drive shaft, such that the at least one energy-accumulating spring can be stressed,
    - wherein after reaching the new end position of the lifting carriage, the jumping carriage which until then is locked can be released such that it suddenly follows the movement of the lifting carriage,
    - and wherein the linear movement of the jumping carriage can be converted into a rotational movement of the driven shaft,
    characterised in that
    - two rollers (12, 13) are disposed on the side of the jumping carriage (9) facing the driven shaft, said rollers running in a rotatable connecting link (14) which faces towards them and which for its part is also connected to the driven shaft,
    - the connecting link (14) comprises an inner contour (16) and outer contour (17) such that during a first part of each movement of the jumping carriage (9) the first roller (12) is initially guided in a positive manner in the connecting link (14) and the second roller (13) is freely movable, during a second part of each movement of the jumping carriage (9) the second roller (13) which until then is freely movable is guided in a positive manner and the first roller (12) which until then is guided in a positive manner is freely movable and during a third part of each movement, in turn the first roller (12) which until then is freely movable is guided in a positive manner and the second roller (13) which until then is guided in a positive manner is freely movable.
  2. Energy accumulator as claimed in claim 1, characterised in that the connecting link (14) comprises an at least approximately Y-shaped path, wherein the distance between the inner contour (16) and the outer contour (17) is constant in the region of the outer regions of the three limbs of the Y-shaped path and corresponds substantially to the diameter of the rollers (12, 13), and wherein the width of the connecting link (14) increases in the central region thereof such that one of the two rollers (12 or 13) is freely movable in this region.
  3. Energy accumulator as claimed in claim 1 or 2, characterised in that an extension arm (11) which supports the two rollers (12, 13) is attached to the jumping carriage (9).
  4. Energy accumulator as claimed in any one of claims 1 to 3, characterised in that the two rollers (12, 13) are disposed in a horizontal plane and in a line perpendicular to the direction of movement of the jumping carriage (9).
  5. Energy accumulator as claimed in any one of claims 1 to 4, characterised in that the connecting link (14) is incorporated into a flywheel (15) which for its part is connected to the driven shaft.
EP06753459A 2005-06-15 2006-04-29 Energy store Not-in-force EP1891653B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005027527A DE102005027527B3 (en) 2005-06-15 2005-06-15 Energy storage device e.g. for load-tap changer switch for transformer, has first and second rollers which are moved in stages by step-change slide
PCT/EP2006/004043 WO2006133767A1 (en) 2005-06-15 2006-04-29 Energy store

Publications (2)

Publication Number Publication Date
EP1891653A1 EP1891653A1 (en) 2008-02-27
EP1891653B1 true EP1891653B1 (en) 2010-06-23

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EP06753459A Not-in-force EP1891653B1 (en) 2005-06-15 2006-04-29 Energy store

Country Status (13)

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US (1) US7652218B2 (en)
EP (1) EP1891653B1 (en)
JP (1) JP4693901B2 (en)
KR (1) KR101213058B1 (en)
CN (1) CN101019198B (en)
AT (1) ATE472162T1 (en)
BR (1) BRPI0605930B1 (en)
DE (2) DE102005027527B3 (en)
ES (1) ES2347000T3 (en)
HK (1) HK1115225A1 (en)
RU (1) RU2394297C2 (en)
UA (1) UA91229C2 (en)
WO (1) WO2006133767A1 (en)

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DE102010007535B4 (en) * 2010-02-11 2017-12-21 Maschinenfabrik Reinhausen Gmbh Tap-changer with freewheeling element
DE102010020130A1 (en) * 2010-05-11 2011-11-17 Maschinenfabrik Reinhausen Gmbh Diverter switch for a tap changer
JP5677163B2 (en) * 2011-03-28 2015-02-25 株式会社東芝 Accumulation mechanism with forcible input mechanism and tap switching device under load
EP2535910A1 (en) 2011-06-15 2012-12-19 ABB Research Ltd. An energy accumulator for actuating a switching device, a tap changer and a transformer
DE102012103489B4 (en) * 2012-04-20 2015-11-12 Maschinenfabrik Reinhausen Gmbh On-load tap-changer and its use for voltage regulation in a distribution transformer
DE102012103490B4 (en) * 2012-04-20 2015-11-12 Maschinenfabrik Reinhausen Gmbh Distribution transformer for voltage regulation of local networks
DE102013107554B4 (en) * 2013-07-16 2016-05-19 Maschinenfabrik Reinhausen Gmbh load selector
DE102015103928B4 (en) 2015-03-17 2021-11-04 Maschinenfabrik Reinhausen Gmbh Energy storage for an on-load tap-changer and on-load tap-changer with energy storage
JP6180573B1 (en) * 2016-03-18 2017-08-16 株式会社ダイヘン Load tap changer
JP6434081B1 (en) * 2017-05-29 2018-12-05 株式会社ダイヘン Auxiliary drive
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UA91229C2 (en) 2010-07-12
RU2007107088A (en) 2008-09-10
BRPI0605930A2 (en) 2009-10-27
ES2347000T3 (en) 2010-10-22
BRPI0605930B1 (en) 2018-03-20
JP4693901B2 (en) 2011-06-01
RU2394297C2 (en) 2010-07-10
KR20080016519A (en) 2008-02-21
DE102005027527B3 (en) 2006-08-17
CN101019198B (en) 2010-05-19
US7652218B2 (en) 2010-01-26
HK1115225A1 (en) 2008-11-21
DE502006007265D1 (en) 2010-08-05
KR101213058B1 (en) 2012-12-17
CN101019198A (en) 2007-08-15
JP2008544505A (en) 2008-12-04
EP1891653A1 (en) 2008-02-27
US20090288934A1 (en) 2009-11-26
WO2006133767A1 (en) 2006-12-21
ATE472162T1 (en) 2010-07-15

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