EP1891652A1 - Energy accumulator - Google Patents

Energy accumulator

Info

Publication number
EP1891652A1
EP1891652A1 EP06753458A EP06753458A EP1891652A1 EP 1891652 A1 EP1891652 A1 EP 1891652A1 EP 06753458 A EP06753458 A EP 06753458A EP 06753458 A EP06753458 A EP 06753458A EP 1891652 A1 EP1891652 A1 EP 1891652A1
Authority
EP
European Patent Office
Prior art keywords
carriage
jump
elevator
movement
guide rods
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.)
Granted
Application number
EP06753458A
Other languages
German (de)
French (fr)
Other versions
EP1891652B1 (en
Inventor
Silke Wrede
Klaus Hoepfl
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP1891652A1 publication Critical patent/EP1891652A1/en
Application granted granted Critical
Publication of EP1891652B1 publication Critical patent/EP1891652B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7439—Float arm operated valve
    • Y10T137/7481—Rotary valve element

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 a power storage is known from DE-PS 19 56 369 and DE-PS 28 06 282 already known. It is mounted at the beginning of each actuation of the on-load tap-changer by its drive shaft, d. H. curious; excited.
  • 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 form the guide for the force-storing springs, such that in each case one force-storing spring in each case encloses a guide rod.
  • 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. This sudden movement of the jump carriage is converted into a rotational movement of an output shaft. This in turn serves to actuate the on-load tap-changer, i. H. to switch between the previous to a new winding tap under load.
  • both elevator carriage and jumping carriage on an open 4-point storage they are on - seen in the direction of movement - upper and lower end respectively mounted on the two parallel guide rods and are guided by these.
  • the well-known power storage places high demands on the parallelism of the guide rods and the accuracy of the moving parts as a whole, since jamming or even a stiffness of elevator or jump sled must be avoided.
  • a stiffness of the elevator carriage would cause unacceptably large actuation forces; a stiffness of the jump carriage could cause this does not reach its final position and thus the switching of the on-load tap changer can not be properly completed, since the energy storage does not latch in its new end position.
  • the object of the invention is to provide a force accumulator of the type mentioned, which has a simple structure and a particularly high reliability.
  • Fig. 1 shows a force storage device according to the invention in a lateral view
  • Fig. 4 is a schematic representation of the principle of the three parallel
  • Figures 1 to 3 show a force storage device according to the invention in different representations, not all items described in more detail below recognizable in each representation and thus not all reference numerals are entered.
  • the force-storing springs and the force-storing carrier have been omitted for better illustration.
  • an eccentric disc 2 which is connected to a drive shaft 1 is also provided in the force accumulator described here, which actuates an elevator carriage 3 by acting on the driver blocks 4 and 5 arranged at the top and bottom in the direction of movement of the elevator carriage 2.
  • the force accumulator has three parallel extending, along the direction of movement of the elevator carriage 3 extending guide rods 6, 7 and 8, two of which, in the example shown, these are the guide rods 6 and 7, of power storage springs 12, 13 are enclosed.
  • the elevator carriage 3 has at its one end two linear bearings 9 and 10.
  • the linear bearing 9 encloses the guide rod 6, the linear bearing 10 encloses the guide rod 8.
  • the elevator carriage 3 has only a single linear bearing 11, which encloses the guide rod 7.
  • the energy storage springs 12 and 13 each extend around one of the two guide rods 6 and 7, respectively. They are fixed in the direction of movement above or below in each case a displaceable spring bar 14 and 15 with one of their ends and are supported there. The function of the spring bars 14, 15 will be explained later in more detail.
  • the described three guide rods 6, 7, 8 are attached at its two ends to a force storage carrier 17, to which the other stationary components of the force accumulator according to the invention are attached.
  • the sequence of movements in an elevator of the force accumulator is as follows:
  • the drive shaft 1 begins to rotate, with it the eccentric disc 2, which slides on the corresponding driver block 4, 5 and thus shifts the elevator carriage 3 in the longitudinal direction.
  • the force storage springs 12, 13 are tensioned.
  • these power storage springs 12, 13 are biased maximum.
  • the jump slide 16 is still locked by laterally up and down in the direction of movement latch lever 21, 22 so that it can not follow the direction of movement of the elevator slide 3.
  • a suitable actuator for the rollers 23 and 24 may, for. B. a vertical, laterally arranged on the elevator carriage 3, be downwardly extending actuating sheet whose presentation has been omitted here for reasons of clarity, since it would have hidden many important other components.
  • Such an actuating plate may be fastened to a screw connection 33 indicated in FIG.
  • spring bars 14 and 15 have already been briefly described, which are arranged displaceably on the guide rods 6 and 7 and respectively form upper and lower abutment for the power storage springs 12 and 13.
  • Spring webs 14, 15 on the one hand and elevator slide 3 and jump carriage 16 on the other hand are designed such that the spring bars 14, 15 abut both upper and lower limits of the elevator carriage 3 and the jump carriage 16 in the direction of movement and taken by these two components in both directions of movement can be.
  • the jump-like linear movement of the jump carriage 16 is by known technical means, for.
  • one or two rollers 31 are provided for this purpose, which are fastened to the jump carriage 16 and are guided in a groove 32 of the output element 26.
  • This output element 26 is connected to an output shaft, not shown here, in connection, which ultimately jumped the on-load tap changer, d. H. initiates the sudden changeover between two winding taps under load.
  • the rollers 31 are fastened by means of a carrier 34 on the jump carriage 16.
  • an additional pressing device is arranged in the force storage device according to the invention.
  • Such Nachdrück worn should ensure that even under difficult operating conditions, for example, at low temperatures and very tough the energy storage enclosing oil with certainty the new end position is reached and the energy storage latched in this new position again. It consists of in the direction of movement at the top and bottom of the jump carriage 16 arranged drivers 27 and 28, with a roller pin 29 on the Eccentric disc 2 correspond.
  • the roller pin 29 is arranged such that it shortly before the end of the movement of the jump carriage 16, ie shortly before reaching its new end position, depending on the position of the jump carriage 16 coincides with either the driver 27 or the driver 28 and thus by the still rotating Eccentric disc 2 additionally pushes the jump carriage 16 in the new end position - hence the name Nachdrück arthritis.

Landscapes

  • Transmission Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Valve Device For Special Equipments (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Types And Forms Of Lifts (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Control Of Eletrric Generators (AREA)
  • Harvester Elements (AREA)
  • Handcart (AREA)

Abstract

The accumulator has longitudinally movable lift and leaping carriages (3, 16) fixed in connection with a drive shaft, where the carriages are guided through three parallel guide rods extending in the direction of motion of the carriages. Two of the three rods are surrounded by a power accumulator spring, and each of the carriages has three linear bearings, where each of the bearings surrounds the other rod. A cam follower (29) is arranged to coincide with an actuator such that the leaping carriage is pushed into a new final position by rotation of an eccentric plate.

Description

Kraftspeicher power storage
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 a power storage is known from DE-PS 19 56 369 and DE-PS 28 06 282 already known. It is mounted at the beginning of each actuation of the on-load tap-changer by its drive shaft, d. H. curious; excited. 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 zwei 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 two guide rods are provided on which elevator carriage and jump carriage are mounted independently longitudinally movable. At the same time, the guide rods form the guide for the force-storing springs, such that in each case one force-storing spring in each case encloses a guide rod.
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. Dieser folgt nun sprungartig, da unter der Kraft der gespannten Kraftspeicherfedern stehend, der vorangegangenen linearen Bewegung des Aufzugsschlittens ebenfalls linear nach. Diese sprungartige Bewegung des Sprungschlittens wird in eine Drehbewegung einer Abtriebswelle umgewandelt. Diese wiederum dient zur Betätigung des Laststufenschalters, d. h. zur Umschaltung zwischen der bisherigen auf eine neue Wicklungsanzapfung unter Last.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. This sudden movement of the jump carriage is converted into a rotational movement of an output shaft. This in turn serves to actuate the on-load tap-changer, i. H. to switch between the previous to a new winding tap under load.
Bei dem bekannten Kraftspeicher weisen sowohl Aufzugsschlitten als auch Sprungschlitten eine offene 4-Punkt-Lagerung auf: Sie sind am - in Bewegungsrichtung gesehen - oberen und unteren Ende jeweils an den beiden parallelen Führungsstangen gelagert und werden von diesen geführt.In the known power storage both elevator carriage and jumping carriage on an open 4-point storage: they are on - seen in the direction of movement - upper and lower end respectively mounted on the two parallel guide rods and are guided by these.
Der bekannte Kraftspeicher stellt hohe Anforderungen an die Parallelität der Führungsstangen und die Genauigkeit der beweglichen Teile insgesamt, da ein Verklemmen oder auch nur eine Schwergängigkeit von Aufzugs- oder Sprungschlitten unbedingt vermieden werden muss. Eine Schwergängigkeit des Aufzugsschlittens würde unzulässig große Betätigungskräfte nach sich ziehen; eine Schwergängigkeit des Sprungsschlittens könnte dazu führen, dass dieser seine Endposition nicht erreicht und damit die Umschaltung des Laststufenschalters nicht ordnungsgemäß zu Ende geführt werden kann, da der Kraftspeicher nicht in seiner neuen Endposition verklinkt. Aufgabe der Erfindung ist es, einen Kraftspeicher der eingangs genannten Art anzugeben, der einen einfachen Aufbau sowie eine besonders hohe Betriebssicherheit aufweist.The well-known power storage places high demands on the parallelism of the guide rods and the accuracy of the moving parts as a whole, since jamming or even a stiffness of elevator or jump sled must be avoided. A stiffness of the elevator carriage would cause unacceptably large actuation forces; a stiffness of the jump carriage could cause this does not reach its final position and thus the switching of the on-load tap changer can not be properly completed, since the energy storage does not latch in its new end position. The object of the invention is to provide a force accumulator of the type mentioned, which has a simple structure and a particularly high reliability.
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.
Durch die erfindungsgemäße Anordnung von drei parallelen Führungsstangen und die ebenfalls erfindungsgemäße umschlungene 3-Punkt-Lagerung von sowohl Aufzugsschlitten als auch Sprungschlitten ist eine optimale Führung dieser Bauteile ohne mechanische Überbestimmung gewährleistet. Daraus ergibt sich eine besonders hohe Funktionssicherheit auch bei auftretenden Querkräften, z. B. in Verbindung mit Nachdrückeinrichtungen, in Vergleich zum Stand der Technik.The inventive arrangement of three parallel guide rods and the invention also embraced 3-point storage of both elevator carriage and jump carriage optimum guidance of these components is ensured without mechanical overdetermination. This results in a particularly high reliability even when occurring shear forces, z. B. in conjunction with pressing devices, in comparison to the prior art.
Die Erfindung soll nachfolgend an Hand von Zeichnungen beispielhaft noch näher erläutert werden. Es zeigen:The invention will be explained in more detail by way of example with reference to drawings. Show it:
Fig. 1 einen erfindungsgemäßen Kraftspeicher in seitlicher DarstellungFig. 1 shows a force storage device according to the invention in a lateral view
Fig. 2 diesen Kraftspeicher in perspektivischer DarstellungFig. 2 this energy storage in perspective view
Fig. 3 diesen Kraftspeicher in weiterer perspektivischer Darstellung von der anderenFig. 3 this energy storage in a further perspective view of the other
Seite, d. h. horizontal um 180 Grand gedrehtPage, d. H. horizontally rotated by 180 grand
Fig. 4 eine schematische Darstellung des Prinzips der drei parallelenFig. 4 is a schematic representation of the principle of the three parallel
Führungsstangen und der umschlungenen 3-Punkt-Lagerung von Aufzugsais auch Sprungschlitten.Guide rods and the entangled 3-point storage of elevator corn also jump carriage.
Die Figuren 1 bis 3 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 2 die Kraftspeicherfedern und der Kraftspeicherträger der besseren Darstellung wegen weggelassen.Figures 1 to 3 show a force storage device according to the invention in different representations, not all items described in more detail below recognizable in each representation and thus not all reference numerals are entered. In addition, in FIG. 2, the force-storing springs and the force-storing carrier have been omitted for better illustration.
Wie aus dem Stand der Technik bekannt, ist auch beim hier beschriebenen Kraftspeicher eine mit einer Antriebswelle 1 in Verbindung stehende Exzenterscheibe 2 vorgesehen, die einen Aufzugsschlitten 3 betätigt, indem sie auf in Bewegungsrichtung des Aufzugsschlittens 2 oben und unten angeordnete Mitnehmerklötze 4 und 5 wirkt. Erfindungsgemäß weist der Kraftspeicher drei parallel verlaufende, sich längs der Bewegungsrichtung des Aufzugsschlittens 3 erstreckende Führungsstangen 6, 7 und 8 auf, wobei zwei davon, im gezeigten Beispiel sind dies die Führungsstangen 6 und 7, von Kraftspeicherfedern 12, 13 umschlossen sind. Die dritte Führungsstange 8, auch als Trägerstange bezeichnet, ist hingegen nicht von einer Kraftspeicherfeder umschlossen. Der Aufzugsschlitten 3 weist an seinem einen Ende zwei Linearlager 9 und 10 auf. Das Linearlager 9 umschließt die Führungsstange 6, das Linearlager 10 umschließt die Führungsstange 8. An seinem anderen Ende weist der Aufzugsschlitten 3 nur ein einziges Linearlager 11 auf, das die Führungsstange 7 umschließt. Mit diesen drei Linearlagern in der beschriebenen Anordnung ist der Aufzugsschlitten 3 stabil gelagert und bei seiner Bewegung definiert geführt.As is known from the prior art, an eccentric disc 2 which is connected to a drive shaft 1 is also provided in the force accumulator described here, which actuates an elevator carriage 3 by acting on the driver blocks 4 and 5 arranged at the top and bottom in the direction of movement of the elevator carriage 2. According to the invention, the force accumulator has three parallel extending, along the direction of movement of the elevator carriage 3 extending guide rods 6, 7 and 8, two of which, in the example shown, these are the guide rods 6 and 7, of power storage springs 12, 13 are enclosed. The third guide rod 8, also referred to as a carrier rod, however, is not enclosed by a force storage spring. The elevator carriage 3 has at its one end two linear bearings 9 and 10. The linear bearing 9 encloses the guide rod 6, the linear bearing 10 encloses the guide rod 8. At its other end, the elevator carriage 3 has only a single linear bearing 11, which encloses the guide rod 7. With these three linear bearings in the described arrangement of the elevator slide 3 is stably stored and guided defined in its movement.
Es wurde bereits erläutert, dass die Kraftspeicherfedern 12 und 13 jeweils um eine der beiden Führungsstangen 6 bzw. 7 herum sich erstrecken. Sie werden in Bewegungsrichtung oben bzw. unten in jeweils einem verschiebbaren Federsteg 14 bzw. 15 mit einem ihrer Enden fixiert und stützen sich dort ab. Die Funktion der Federstege 14, 15 wird später noch näher erläutert werden.It has already been explained that the energy storage springs 12 and 13 each extend around one of the two guide rods 6 and 7, respectively. They are fixed in the direction of movement above or below in each case a displaceable spring bar 14 and 15 with one of their ends and are supported there. The function of the spring bars 14, 15 will be explained later in more detail.
Unterhalb des Aufzugsschlittens 3 ist, in der gleichen Richtung wie dieser längs beweglich, ein Sprungschlitten 16 geführt. Dieser Sprungschlitten 16 weist an der Seite, an der der Aufzugsschlitten 3 zwei Linearlager 9, 10 aufweist, nur ein einziges Linearlager 18 auf, das die Führungsstange 7 umschließt. An der anderen Seite, an der der Aufzugsschlitten 3 nur ein einziges Linearlager 1 1 aufweist, besitzt er hingegen zwei separate solche Linearlager 19, 20. Dabei umschließt das Linearlager 19 die Führungsstange 6 und das Linearlager 20 die Führungsstange 8. Damit ist auch der Sprungschlitten 16 stabil gelagert und bei seiner Bewegung ebenfalls definiert geführt. In Figur 4 ist schematisch diese umschlungene 3-Punkt-Lagerung von Aufzugsschlitten 3 und Sprungschlitten 16 dargestellt. Es ist zu erkennen, dass es sich um eine praktisch spiegelbildliche Anordnung der einzelnen Lagerstellen der beiden beweglichen Bauteile handelt.Below the elevator carriage 3, in the same direction as this longitudinally movable, a jumping carriage 16 is guided. This jumping carriage 16 has, on the side at which the elevator slide 3 has two linear bearings 9, 10, only a single linear bearing 18, which surrounds the guide rod 7. On the other side, where the elevator carriage 3 has only a single linear bearing 1 1, it has, however, two separate such linear bearings 19, 20. Here, the linear bearing 19 encloses the guide rod 6 and the linear bearing 20, the guide rod 8. This is also the jump slide 16 stably stored and also guided defined in its movement. In Figure 4, this looped 3-point storage of elevator carriage 3 and jump carriage 16 is shown schematically. It can be seen that it is a virtually mirror-image arrangement of the individual bearings of the two moving components.
Die beschriebenen drei Führungsstangen 6, 7, 8 sind an ihren beiden Enden an einem Kraftspeicherträger 17 befestigt, an dem auch die weiteren feststehenden Bauteile des erfindungsgemäßen Kraftspeichers befestigt sind.The described three guide rods 6, 7, 8 are attached at its two ends to a force storage carrier 17, to which the other stationary components of the force accumulator according to the invention are attached.
Der Bewegungsablauf bei einem Aufzug des erfindungsgemäßen Kraftspeichers ist folgender: Die Antriebswelle 1 beginnt sich zu drehen, mit ihr die Exzenterscheibe 2, die auf dem entsprechenden Mitnehmerklotz 4, 5 gleitet und somit den Aufzugsschlitten 3 in Längsrichtung verschiebt. Dadurch werden die Kraftspeicherfedern 12, 13 gespannt. Hat der Aufzugsschlitten 3 seine neue Endposition erreicht, sind diese Kraftspeicherfedern 12, 13 maximal vorgespannt. Bis zu diesem Zeitpunkt ist der Sprungschlitten 16 durch in Bewegungsrichtung seitlich oben und unten angeordnete Klinkenhebel 21 , 22 noch arretiert, so dass er der Bewegungsrichtung des Aufzugsschlittens 3 nicht folgen kann. In der neuen Endposition des Aufzugsschlittens 3 wird jedoch durch ein geeignetes Betätigungselement, das in den Zeichnungen nicht dargestellt ist, je nach Bewegungsrichtung eine obere bzw. untere Rolle 23, 24 am oberen bzw. unteren Klinkenhebel 21 , 22 nach innen gedrückt. In der Folge wird der jeweilige Klinkenhebel 21 oder 22 gegen die Kraft einer Klinkenfeder 25 aus der Arretierung gelöst und der Sprungschlitten 16 folgt jetzt, bedingt durch die Kraft der gespannten Kraftspeicherfedern 12 und 13, sprungartig der Bewegung des Aufzugsschlittens 3 nach. Hat er seine neue Endposition erreicht, erfolgt wieder eine Arretierung, d. h. die Klinkenhebel 21 , 22 verklinken den Sprungschlitten 16 in der neuen Position wieder. Bei der nächsten Betätigung des Kraftspeichers vollzieht sich der geschilderte Bewegungsablauf von Aufzugsschlitten 3 und Sprungschlitten 16 in der anderen Richtung. Die Bewegungsrichtung der einzelnen Bauteile ist in den Figuren durch Pfeile angedeutet; der Kraftspeicher besitzt eine linke und eine rechte Endstellung, zwischen denen bei jeder Umschaltung alternierend gewechselt wird.The sequence of movements in an elevator of the force accumulator according to the invention is as follows: The drive shaft 1 begins to rotate, with it the eccentric disc 2, which slides on the corresponding driver block 4, 5 and thus shifts the elevator carriage 3 in the longitudinal direction. As a result, the force storage springs 12, 13 are tensioned. Has the elevator carriage 3 reaches its new end position, these power storage springs 12, 13 are biased maximum. Until this time, the jump slide 16 is still locked by laterally up and down in the direction of movement latch lever 21, 22 so that it can not follow the direction of movement of the elevator slide 3. In the new end position of the elevator carriage 3, however, by a suitable actuator, which is not shown in the drawings, depending on the direction of movement, an upper or lower roller 23, 24 on the upper and lower latch lever 21, 22 pressed inwards. As a result, the respective latch lever 21 or 22 is released against the force of a pawl spring 25 from the lock and the jump carriage 16 now follows, due to the force of the tensioned power storage springs 12 and 13, the movement of the elevator carriage 3 abruptly. Once it has reached its new end position, a locking takes place again, ie the latch levers 21, 22 latch the jump carriage 16 in the new position again. At the next actuation of the energy storage takes place the described Movement of elevator carriage 3 and jump carriage 16 in the other direction. The direction of movement of the individual components is indicated in the figures by arrows; The energy storage has a left and a right end position, between which alternately changed at each switching.
Ein geeignetes Betätigungselement für die Rollen 23 bzw. 24 kann z. B. ein senkrechtes, seitlich am Aufzugsschlitten 3 angeordnetes, sich nach unten erstreckendes Betätigungsblech sein, dessen Darstellung hier aus Gründen der Übersichtlichkeit weggelassen wurde, da es zahlreiche wichtige andere Bauteile verdeckt hätte. Ein solches Betätigungsblech kann an einer in Figur 1 angedeuteten Verschraubung 33 befestigt sein.A suitable actuator for the rollers 23 and 24 may, for. B. a vertical, laterally arranged on the elevator carriage 3, be downwardly extending actuating sheet whose presentation has been omitted here for reasons of clarity, since it would have hidden many important other components. Such an actuating plate may be fastened to a screw connection 33 indicated in FIG.
Weiter oben wurden bereits die Federstege 14 und 15 kurz beschrieben, die verschiebbar auf den Führungsstangen 6 und 7 angeordnet sind und jeweils oberes bzw. unteres Widerlager für die Kraftspeicherfedern 12 und 13 bilden. Federstege 14, 15 einerseits sowie Aufzugsschlitten 3 und Sprungschlitten 16 andererseits sind derart ausgebildet, dass die Federstege 14, 15 sowohl an in Bewegungsrichtung obere als auch an untere Begrenzungen des Aufzugsschlittens 3 als auch des Sprungschlittens 16 anschlagen und von diesen beiden Bauteilen in beiden Bewegungsrichtungen mitgenommen werden können. Durch diese Bauweise ist das bereits beschriebene Spannen der Kraftspeicherfedern 12, 13 beim Aufziehen des Aufzugsschlittens 3 sowie das nachfolgende sprungartige Entspannen bei der Auslösung des Sprungschlittens 16 in beiden Bewegungsrichtungen technisch realisiert.Further above, the spring bars 14 and 15 have already been briefly described, which are arranged displaceably on the guide rods 6 and 7 and respectively form upper and lower abutment for the power storage springs 12 and 13. Spring webs 14, 15 on the one hand and elevator slide 3 and jump carriage 16 on the other hand are designed such that the spring bars 14, 15 abut both upper and lower limits of the elevator carriage 3 and the jump carriage 16 in the direction of movement and taken by these two components in both directions of movement can be. By this construction, the already described tensioning of the power storage springs 12, 13 when mounting the elevator carriage 3 and the subsequent sudden relaxation in the release of the jump carriage 16 in both directions of movement is technically realized.
Die sprungartige Linearbewegung des Sprungschlittens 16 wird durch bekannte technische Mittel, z. B. eine mit einem Zahnrad in Verbindung stehende Längsverzahnung, wie aus der WO 02/31847 bekannt, oder auch durch einen Gleitstein und eine Kurbel, wie aus der DE-PS 19 56 369 bekannt, in eine Drehbewegung eines Abtriebselementes 26 umgewandelt. Im hier gezeigten Beispiel sind dazu eine oder zwei Rollen 31 vorgesehen, die am Sprungschlitten 16 befestigt sind und in einer Nut 32 des Abtriebselementes 26 geführt sind. Dieses Abtriebselement 26 steht mit einer hier nicht dargestellten Abtriebswelle in Verbindung, die letztendlich den Laststufenschalter sprungartig bewegt, d. h. die sprungartige Umschaltung zwischen zwei Wicklungsanzapfungen unter Last einleitet. Befestigt sind die Rollen 31 mittels eines Trägers 34 am Sprungschlitten 16.The jump-like linear movement of the jump carriage 16 is by known technical means, for. Example, a gear associated with a longitudinal toothing, as known from WO 02/31847, or by a sliding block and a crank, as known from DE-PS 19 56 369, converted into a rotational movement of an output member 26. In the example shown here, one or two rollers 31 are provided for this purpose, which are fastened to the jump carriage 16 and are guided in a groove 32 of the output element 26. This output element 26 is connected to an output shaft, not shown here, in connection, which ultimately jumped the on-load tap changer, d. H. initiates the sudden changeover between two winding taps under load. The rollers 31 are fastened by means of a carrier 34 on the jump carriage 16.
Nach einer besonders vorteilhaften Weiterbildung der Erfindung ist beim erfindungsgemäßen Kraftspeicher noch eine zusätzliche Nachdrückeinrichtung angeordnet. Eine solche Nachdrückeinrichtung soll sicherstellen, dass auch unter erschwerten Betriebsbedingungen, beispielsweise bei tiefen Temperaturen und in der Folge sehr zähem den Kraftspeicher umschließenden Öl mit Sicherheit die neue Endposition erreicht wird und der Kraftspeicher in dieser neuen Position wieder verklinkt. Sie besteht aus in Bewegungsrichtung oben und unten am Sprungschlitten 16 angeordneten Mitnehmern 27 bzw. 28, die mit einem Rollenbolzen 29 an der Exzenterscheibe 2 korrespondieren. Der Rollenbolzen 29 ist dabei derart angeordnet, dass er kurz vor Ende der Bewegung des Sprungschlittens 16, d. h. kurz vor Erreichen dessen neuer Endposition, je nach Stellung des Sprungschlittens 16 mit entweder dem Mitnehmer 27 oder dem Mitnehmer 28 zusammentrifft und damit durch die sich noch drehende Exzenterscheibe 2 zusätzlich den Sprungschlitten 16 in die neue Endposition drückt - deswegen auch die Bezeichnung Nachdrückeinrichtung. According to a particularly advantageous embodiment of the invention, an additional pressing device is arranged in the force storage device according to the invention. Such Nachdrückeinrichtung should ensure that even under difficult operating conditions, for example, at low temperatures and very tough the energy storage enclosing oil with certainty the new end position is reached and the energy storage latched in this new position again. It consists of in the direction of movement at the top and bottom of the jump carriage 16 arranged drivers 27 and 28, with a roller pin 29 on the Eccentric disc 2 correspond. The roller pin 29 is arranged such that it shortly before the end of the movement of the jump carriage 16, ie shortly before reaching its new end position, depending on the position of the jump carriage 16 coincides with either the driver 27 or the driver 28 and thus by the still rotating Eccentric disc 2 additionally pushes the jump carriage 16 in the new end position - hence the name Nachdrückeinrichtung.

Claims

Patentansprüche claims
1. Kraftspeicher für einen Laststufenschalter, wobei ein längsbeweglicher, mit einer Antriebswelle in Verbindung stehender Aufzugsschlitten und ein ebenfalls längsbeweglicher, mit einer Abtriebswelle in Verbindung stehender Sprungschlitten vorgesehen sind, wobei Aufzugsschlitten und Sprungschlitten durch sich in deren Bewegungsrichtung erstreckende parallele Führungsstangen geführt sind, wobei zwischen Aufzugsschlitten und Sprungschlitten Kraftspeicherfedern vorgesehen sind, wobei der Aufzugsschlitten bei jeder Schaltung des Laststufenschalters durch die sich drehende1. Power storage for an on-load tap changer, wherein a longitudinally movable, standing with a drive shaft in connection elevator carriage and also longitudinally movable, standing with an output shaft in connection jump carriage are provided, wherein elevator carriage and jump carriage are guided by extending in the direction of their movement parallel guide rods, wherein between Elevator carriage and jumping carriage power storage springs are provided, wherein the elevator carriage at each circuit of the on-load tap-changer by the rotating
Antriebswelle in alternativ eine von zwei entgegengesetzten Richtungen linear bewegbar ist, derart, dass die Kraftspeicherfedern spannbar sind und wobei kurz vor Erreichen der neuen Endstellung des Aufzugsschlittens der bis dahin arretierteDrive shaft in alternatively one of two opposite directions is linearly movable, such that the power storage springs are tensioned and wherein just before reaching the new end position of the elevator slide locked until then
Sprungschlitten auslösbar ist, derart, dass er der Bewegung des Aufzugsschlittens sprungartig nachfolgt, dadurch gekennzeichnet, dass genau drei parallele Führungsstangen (6, 7, 8) vorgesehen sind, von denen zwei benachbarteJump carriage is triggered, such that it follows the movement of the elevator carriage jump, characterized in that exactly three parallel guide rods (6, 7, 8) are provided, of which two adjacent
Führungsstangen (6, 7) von jeweils einer Kraftspeicherfeder (12, 13) umschlossen sind, dass der Aufzugsschi itten (3) drei Linearlager (9, 10, 11 ) aufweist und jedes dieser Linearlager (9, 10,Guide rods (6, 7) are each enclosed by a force storage spring (12, 13), that the elevator Schi itten (3) has three linear bearings (9, 10, 11) and each of these linear bearings (9, 10,
11 ) jeweils eine andere Führungsstange (6 oder 7 oder 8) umschließt und dass der Sprungschlitten (16) drei weitere Linearlager (18, 19, 20) aufweist und jedes dieser weiteren Linearlager (18, 19, 20) wiederum jeweils eine andere Führungsstange (6 oder 7 oder 8) umschließt.11) in each case encloses another guide rod (6 or 7 or 8) and that the jump carriage (16) has three further linear bearings (18, 19, 20) and each of these further linear bearings (18, 19, 20) in each case in turn a different guide rod (16). 6 or 7 or 8).
2. Kraftspeicher nach Anspruch 1 dadurch gekennzeichnet, dass sowohl am Aufzugsschlitten (3) als auch am Sprungschlitten (16) jeweils zwei Linearlager (9, 10 bzw. 19, 20) an einer Seite, annähernd senkrecht zur Bewegungsrichtung, angeordnet sind und dass jeweils andere Linearlager (1 1 bzw. 18) an der jeweils anderen Seite angeordnet ist.2. Power accumulator according to claim 1, characterized in that both the elevator carriage (3) and the jump carriage (16) each have two linear bearings (9, 10 and 19, 20) on one side, approximately perpendicular to the direction of movement, are arranged and that respectively another linear bearing (1 1 or 18) is arranged on the other side.
3. Kraftspeicher nach Anspruch 1 oder 2 dadurch gekennzeichnet, dass sich die Kraftspeicherfedern (12, 13) beidseitig in jeweils einem Federsteg (14, 15) abstützen, dass jeder Federsteg (14, 15) unabhängig vom anderen auf den Führungsstangen (6, 7, 8) verschiebbar ist und dass die Federstege (14, 15) einerseits sowie Aufzugsschlitten (3) und Sprungschlitten (16) andererseits derart ausgebildet sind, dass die Federstege (14, 15) an Begrenzungen des Aufzugsschlittens (3) als auch des Sprungschlittens (16) anschlagen und von diesen beiden Bauteilen in beiden Bewegungsrichtungen verschiebbar sind. 3. Power accumulator according to claim 1 or 2, characterized in that the force storage springs (12, 13) on both sides in a respective spring bar (14, 15) are supported, that each spring bar (14, 15) independently of the other on the guide rods (6, 7 , 8) is displaceable and that the spring webs (14, 15) on the one hand and elevator carriage (3) and jump carriage (16) on the other hand are formed such that the spring webs (14, 15) at boundaries of the elevator carriage (3) and the jump carriage ( 16) strike and are displaced by these two components in both directions of movement.
4. Kraftspeicher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zusätzlich am Sprungschlitten (16) Mitnehmer (27, 28) vorgesehen sind, die mit einem4. energy accumulator according to one of claims 1 to 3, characterized in that in addition to the jump carriage (16) driver (27, 28) are provided which with a
Rollenbolzen (29) an der Exzenterscheibe (2) korrespondieren und dass der Rollenbolzen (29) derart angeordnet ist, dass er kurz vor Ende der Bewegung desRoll pin (29) on the eccentric disc (2) correspond and that the roller pin (29) is arranged such that it is close to the end of the movement of the
Sprungschlittens (16) vor Erreichen dessen neuer Endposition mit einem der Mitnehmer (27, 28) zusammentrifft, derart, dass durch die sich drehende Exzenterscheibe (2) zusätzlich derJump carriage (16) before reaching its new end position coincides with one of the drivers (27, 28), such that by the rotating eccentric disc (2) in addition to the
Sprungschlitten (16) in die neue Endposition drückbar ist. Jump carriage (16) can be pressed into the new end position.
EP20060753458 2005-06-15 2006-04-29 Energy accumulator Not-in-force EP1891652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005027524A DE102005027524B3 (en) 2005-06-15 2005-06-15 Power accumulator for on-load tap changer, has lift and leaping carriages with three linear bearings, and cam follower coinciding with actuator such that leaping carriage is pushed into new final position by rotation of eccentric plate
PCT/EP2006/004042 WO2006133766A1 (en) 2005-06-15 2006-04-29 Energy accumulator

Publications (2)

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EP1891652A1 true EP1891652A1 (en) 2008-02-27
EP1891652B1 EP1891652B1 (en) 2011-02-16

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US (1) US7518075B2 (en)
EP (1) EP1891652B1 (en)
JP (1) JP4774437B2 (en)
KR (1) KR101213057B1 (en)
CN (1) CN101019197B (en)
AT (1) ATE498896T1 (en)
BR (1) BRPI0605903B1 (en)
DE (2) DE102005027524B3 (en)
ES (1) ES2361337T3 (en)
HK (1) HK1115226A1 (en)
RU (1) RU2380782C2 (en)
UA (1) UA91368C2 (en)
WO (1) WO2006133766A1 (en)

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JP2008544504A (en) 2008-12-04
DE502006008913D1 (en) 2011-03-31
ATE498896T1 (en) 2011-03-15
RU2380782C2 (en) 2010-01-27
US7518075B2 (en) 2009-04-14
ES2361337T3 (en) 2011-06-16
KR101213057B1 (en) 2012-12-17
RU2008101543A (en) 2009-07-20
BRPI0605903A (en) 2007-12-18
JP4774437B2 (en) 2011-09-14
UA91368C2 (en) 2010-07-26
WO2006133766A1 (en) 2006-12-21
EP1891652B1 (en) 2011-02-16
CN101019197A (en) 2007-08-15
DE102005027524B3 (en) 2006-10-12
HK1115226A1 (en) 2008-11-21
BRPI0605903B1 (en) 2018-05-02
CN101019197B (en) 2010-12-15
KR20080016522A (en) 2008-02-21
US20080093207A1 (en) 2008-04-24

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