EP0477423A1 - Frame joining system - Google Patents

Frame joining system Download PDF

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Publication number
EP0477423A1
EP0477423A1 EP90118717A EP90118717A EP0477423A1 EP 0477423 A1 EP0477423 A1 EP 0477423A1 EP 90118717 A EP90118717 A EP 90118717A EP 90118717 A EP90118717 A EP 90118717A EP 0477423 A1 EP0477423 A1 EP 0477423A1
Authority
EP
European Patent Office
Prior art keywords
frame
tie rod
press frame
composite
frame part
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
EP90118717A
Other languages
German (de)
French (fr)
Other versions
EP0477423B1 (en
Inventor
Friedrich Dipl.-Ing. Alber
Rudolf Dedelmahr
Winfried Dipl.-Ing. Jungnitz
Rudolf Link
Hans Dipl.-Ing. Schott
Siegfried Dipl.-Ing. Weiss
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT90118717T priority Critical patent/ATE130698T1/en
Priority to EP90118717A priority patent/EP0477423B1/en
Priority to DE59009903T priority patent/DE59009903D1/en
Priority to TW080107632A priority patent/TW207024B/zh
Publication of EP0477423A1 publication Critical patent/EP0477423A1/en
Priority to US08/231,863 priority patent/US5430425A/en
Application granted granted Critical
Publication of EP0477423B1 publication Critical patent/EP0477423B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together

Definitions

  • the invention relates to a composite frame system for a press frame of a transformer core
  • the invention has for its object to significantly simplify the known frame composite system.
  • the entire press frame lies evenly on the transformer core, as a result of which a uniform pressing is achieved. Filling material for the cavities and the additional work steps are eliminated.
  • a preferred embodiment of the press frame is given according to a combination of claims 2 to 5, 8, 9 and 10.
  • the construction and manufacture of the press frame part and tie rod are considerably simplified, with their stability, in particular their connection stability, increasing.
  • the number of individual parts is also significantly reduced, so that storage for the composite frame system is reduced.
  • the tie rod now consists of only one piece of punched metal. The already critical spigot is eliminated.
  • the transformer 1 shows a longitudinal section through a transformer 1.
  • the transformer 1 comprises a layered transformer core 3, a coil 5 with coil support 7, which is arranged on one leg 9 of the transformer core 3, and a press frame 11.
  • the press frame 11 initially comprises a press frame part 13 , which bears against the yoke 15 of the transformer core 3.
  • the press frame part 13 can be formed as shown by a U-profile. However, other profile shapes or flat strips can also be used.
  • the press frame part 13 is part of a composite frame system 16a and has a recess 17 on its side facing the coil 5, in which a tie rod 19 resting on the leg 9 is arranged.
  • the tie rod 19 is non-positively connected to the press frame part 13. Further details follow in the description of FIGS. 3 to 6.
  • the transformer core 3 is supplied facing surfaces 21a, 21 of the tie rod 19 and the press frame part 13 lie in a common plane.
  • the surfaces 21a, 21 lie flat on the transformer core 3. Cavities between the press frame 11 and transformer core 3 are not present.
  • the pressing and tensioning of the transformer core 3 is improved.
  • the resulting tensile and tension forces between the press frame part 13 and tie rod 19 are advantageously in the plane of the tie rod 19.
  • the frame composite system 16a essentially consists of only two elements, which leads to a reduction in storage. The elements are also particularly easy to manufacture, since they can be manufactured from standard profiles in just a few steps.
  • a wedge 23 is arranged between the coil 5 and the press frame part 13 and serves as a clamping device.
  • the wedge 23 is preferably pressed in with a predetermined force. This can also be achieved in that the wedge is pressed in a predetermined distance. In this way, the same clamping force can always be maintained even with different dimensions of the coil 5 and the press frame part 13.
  • the wedge 5 can be provided with a self-locking or anti-slip surface or wedge slope.
  • An additional fuse, e.g. a paint protection or pinning can be provided.
  • the wedge 23 is preferably arranged in a recess 23a of the coil support 7. In this way, the wedge 23 is guided laterally. In addition, it lies flat on the press frame part 13, whereby the bracing is improved.
  • the coil support 7 can also be formed by a coil former.
  • FIG. 2 shows a further exemplary embodiment of a frame composite system 16b.
  • the tie rod 19 has a bend 24 with an adjusting screw 25 which presses against the press frame part 13.
  • a tensioning screw 27 which is guided in the press frame part 13 and acts between the coil 5 and the press frame part 13, is provided as the tensioning device for the coil 5.
  • An additional fuse can also be attached here, as already described above.
  • 3 shows a frame composite system 16c according to FIG. 1 in a side view.
  • the tie rod 19 is arranged with an engagement part 29 in the recess 17 of the press frame part 13.
  • the engagement part 29 has a rear grip 31 which engages on a shoulder 33 of the recess 17.
  • the area of engagement of the rear grip 31 on the shoulder 33 should be at least as large as the smallest cross-sectional area of the tie rod 19. In this way, reliable power transmission without damage to the engagement part 29 is provided.
  • the recess 17 has a plurality of shoulders 33a, 33b lying one behind the other, so that the engagement part 29 can be arranged in a plurality of positions.
  • the composite frame system 16d can be set, for example, to different transformer sizes or different tensile forces.
  • FIG. 5 shows a further variant of the frame composite system 16e.
  • the recess 17, in which the engagement part 29 engages appropriately, is provided in a spacer element 35a, which in turn is arranged in an opening 37 of the press frame part 13.
  • spacer elements 35a of different sizes the tensile force of the composite frame system 16e can be set here.
  • FIG. 6 shows a frame composite system 16f in a combination of the designs from FIGS. 4 and 5, in which the spacer element 35b is additionally arranged in the opening 37 in an adjustable manner.
  • the spacer element 35b has rear grips 31a, 31b, which act on the shoulders 33a, 33b.
  • the spacer element 35a, 35b from FIG. 5 and FIG. 6 can also serve to compensate for tolerances in the transformer core 3 or in the frame composite system 16e to 16g.
  • FIG. 7 shows an embodiment of the composite frame system 16g in a longitudinal section, in which the press frame part 13 has a holding cover 39 for the tie rod 19 on a surface 38 facing away from the transformer core 3 in the region of the recess 17.
  • the tie rod 19 is already secured against tilting, slipping or twisting during assembly in the recess 17.
  • This configuration can be produced in terms of production engineering in that the material to be brought out of the press frame part 13 for the recess 17 is pressed or punched through, so that the material forms the holding cover 39.
  • the tie rod 19 can be designed differently in the different versions.
  • the shape of the engagement part can be predetermined as desired. It can, as shown in FIGS. 3 and 4, be attached, or, as shown in FIGS. 5 and 6, formed from a wide flat strip.
  • combinations of the exemplary embodiments described can also be provided by the person skilled in the art. This applies in particular to the combination of the composite frame system with various tensioning devices for the coil.

Abstract

A compression frame (11) with a compression frame part (13) and a tension anchor (19) is provided in a transformer core (3). The surfaces (21a, 21b) of the tension anchor (19) and of the compression frame part (13) facing the transformer core (3) in this case lie in a common plane. In one preferred version of the frame joining system (16a to g), the tension anchor (19) has an engagement part (29) which engages into a recess (17) as a rear handle (31, 31a, 31b).

Description

Die Erfindung bezieht sich auf ein Rahmenverbundsystem für einen Preßrahmen eines TransformatorkernsThe invention relates to a composite frame system for a press frame of a transformer core

Transformatoren, insbesondere Leistungstransformatoren, umfassen in der Regel einen aus Kernblechen geschichteten Transformatorkern, auf dessen Schenkel die Spulen der einzelnen Phasen angeordnet sind. Die Spulen können in Gießharz vergossen sein. Der Transformatorkern wird dabei von einem sogenannten Preßrahmen zusammengehalten. Der Preßrahmen besteht im wesentlichen aus Rahmenteilen, insbesondere Metallschienen, die jeweils zu beiden Seiten der Joche miteinander verschraubt sind. Zusätzlich sind die Rahmenteile zweier Transformatorjoche durch sogenannte Zuganker miteinander verbunden. Diese dienen dazu, den Transformator längs seiner Schenkel zu verspannen und die Spulen auf den Schenkeln zu fixieren.Transformers, in particular power transformers, generally comprise a transformer core layered from core sheets, on the legs of which the coils of the individual phases are arranged. The coils can be cast in resin. The transformer core is held together by a so-called press frame. The press frame consists essentially of frame parts, in particular metal rails, which are screwed together on both sides of the yokes. In addition, the frame parts of two transformer yokes are connected to each other by so-called tie rods. These are used to clamp the transformer along its legs and to fix the coils on the legs.

Ein derartiger Transformator ist beispielsweise in der Trafo-Union Druckschrift A 19100-T1306-A13, Seite 3, Bild 2 detailliert abgebildet. Insbesondere ist auch der genaue Aufbau des Preßrahmens zu erkennen. Die Zuganker bestehen jeweils aus einem Metallband, das an zumindest einem Ende einen in dem Rahmenteil geführten Zapfen aufweist. An diesen Zapfen greift ein Schraubenkopf einer Ösenschraube an, die mit einer Spannmutter an dem Rahmenteil befestigt ist. Die Spannmutter dient zum Einstellen der Zugkraft am Zuganker. Für jeden Schenkel sind jeweils beidseitig separate Zuganker vorgesehen. Auf diese Weise können die Rahmenteile des Preßrahmens zusammen mit dem Kern und den Spulen verspannt werden. Das Verbundsystem zwischen Zuganker und Rahmschiene ist aufwendig, da viele Einzelteile benötigt werden. Seine Herstellung ist arbeits- und kostenintensiv.Such a transformer is shown in detail, for example, in Trafo-Union publication A 19100-T1306-A13, page 3, picture 2. In particular, the exact structure of the press frame can be seen. The tie rods each consist of a metal band which has a pin guided in the frame part at at least one end. A screw head of an eyebolt, which is fastened to the frame part with a clamping nut, engages on this pin. The tension nut is used to adjust the tensile force on the tie rod. Separate tie rods are provided on each side for each leg. In this way, the frame parts of the press frame can be clamped together with the core and the coils. The composite system between tie rod and frame rail is complex because many individual parts are required. Its production is labor and cost intensive.

Der Erfindung liegt die Aufgabe zugrunde, das bekannte Rahmenverbundsystem wesentlich zu vereinfachen.The invention has for its object to significantly simplify the known frame composite system.

Die Lösung dieser Aufgabe gelingt gemäß Anspruch 1.This object is achieved according to claim 1.

Ausgehend von der Tatsache, daß bei einem Preßrahmen der bekannten Art entweder nur die Zuganker oder die Rahmenteile direkt auf dem Transformatorkern aufliegen, ist es eine Erkenntnis des Erfinders, daß die bekannte Ausführung mechanisch ungünstig ist. An den nicht am Transformatorkern aufliegenden Teilen des Preßrahmens muß Füllmaterial vorgesehen werden.Based on the fact that in a press frame of the known type either only the tie rods or the frame parts rest directly on the transformer core, it is a finding of the inventor that the known design is mechanically unfavorable. Filling material must be provided on the parts of the press frame that do not rest on the transformer core.

Bei der erfindungsgemäßen Ausgestaltung liegt der gesamte Preßrahmen gleichmäßig auf dem Transformatorkern auf, wodurch eine gleichmäßige Pressung erzielt wird. Füllmaterial für die Hohlräume sowie die zusätzlichen Arbeitsgänge entfallen.In the embodiment according to the invention, the entire press frame lies evenly on the transformer core, as a result of which a uniform pressing is achieved. Filling material for the cavities and the additional work steps are eliminated.

Eine bevorzugte Ausführung des Preßrahmens ist nach einer Kombination der Ansprüche 2 bis 5, 8, 9 und 10 gegeben. Der Aufbau und die Herstellung von Preßrahmenteil und Zuganker sind wesentlich vereinfacht, wobei ihre Stabilität, insbesondere ihre Verbindungstabilität, zunimmt. Auch die Anzahl der Einzelteile ist wesentlich reduziert, so daß die Lagerhaltung für das Rahmenverbundsystem verringert ist. Der Zuganker besteht nur noch aus einem Stück gestanzten Metalls. Der ohnehin kritische Zapfen entfällt.A preferred embodiment of the press frame is given according to a combination of claims 2 to 5, 8, 9 and 10. The construction and manufacture of the press frame part and tie rod are considerably simplified, with their stability, in particular their connection stability, increasing. The number of individual parts is also significantly reduced, so that storage for the composite frame system is reduced. The tie rod now consists of only one piece of punched metal. The already critical spigot is eliminated.

Gemäß Anspruch 13 und 14 wird die Spule am Rahmenteil mit zumindest einem Keil verspannt.According to claims 13 and 14, the coil is braced on the frame part with at least one wedge.

Dies geschieht durch Einbringen des Keiles mit einem vorgegebenen Einpreßdruck oder Einspreßweg. Auf diese Weise können bei Anordnung von mehreren Spulen alle mit der gleichen Kraft einfach und schnell eingespannt werden. Größenunterschiede der Spulen oder Toleranzen beim Spulenaufbau brauchen nicht berücksichtigt werden.This is done by inserting the wedge with a predetermined press-in pressure or press-in path. In this way, all can be clamped easily and quickly with the same force when arranging several coils. Differences in the size of the coils or tolerances when building the coils need not be taken into account.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den übrigen Ansprüchen angegeben.Further advantageous embodiments of the invention are specified in the remaining claims.

Im folgenden werden anhand der Zeichnung Ausführungsbeispiele der Erfindung beispielhaft näher erläutert. Es zeigen:

  • FIG 1 Einen Auschnitt eines Längschnitts durch einen Transformator mit Rahmenverbundsystem,
  • FIG 2 ein zweites Ausführungsbeispiel eines Rahmenverbundsystems,
  • FIG 3 das Rahmenverbundsystem nach FIG 1 in einer Seitenansicht,
  • FIG 4 ein Rahmenverbundsystem in einer Seitenansicht mit Verstellmöglichkeit,
  • FIG 5 ein Rahmenverbundsystem in einer Seitenansicht mit Distanzelement,
  • FIG 6 ein weiteres Rahmenverbundsystem mit Distanszelement und
  • FIG 7 ein Rahmenverbundsystem mit Halteabdeckung im Längsschnitt.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. Show it:
  • 1 shows a section of a longitudinal section through a transformer with a composite frame system,
  • 2 shows a second exemplary embodiment of a composite frame system,
  • 3 shows the frame composite system according to FIG. 1 in a side view,
  • 4 shows a frame composite system in a side view with adjustment facility,
  • 5 shows a frame composite system in a side view with spacer,
  • 6 shows another frame composite system with spacer element and
  • 7 shows a composite frame system with holding cover in longitudinal section.

FIG 1 zeigt einen Längsschnitt durch einen Transformator 1. Der Transformator 1 umfaßt einen geschichteten Transformatorkern 3, eine Spule 5 mit Spulenabstützung 7, die auf einem Schenkel 9 des Transformatorkerns 3 angeordnet ist, sowie einen Preßrahmen 11. Der Preßrahmen 11 umfaßt zunächst ein Preßrahmenteil 13, das am Joch 15 des Transformatorkerns 3 anliegt. Das Preßrahmenteil 13 kann wie dargestellt von einem U-Profil gebildet sein. Es können jedoch auch andere Profilformen oder auch Flachband verwendet werden.1 shows a longitudinal section through a transformer 1. The transformer 1 comprises a layered transformer core 3, a coil 5 with coil support 7, which is arranged on one leg 9 of the transformer core 3, and a press frame 11. The press frame 11 initially comprises a press frame part 13 , which bears against the yoke 15 of the transformer core 3. The press frame part 13 can be formed as shown by a U-profile. However, other profile shapes or flat strips can also be used.

Das Preßrahmenteil 13 ist Teil eines Rahmenverbundsystems 16a und weist an seiner der Spule 5 zugewandten Seite eine Aussparung 17 auf, in der ein am Schenkel 9 aufliegender Zuganker 19 angeordnet ist. Der Zuganker 19 steht in kraftschlüssiger Verbindung mit dem Preßrahmenteil 13. Näheres hierzu folgt in der Beschreibung zu den Figuren 3 bis 6.The press frame part 13 is part of a composite frame system 16a and has a recess 17 on its side facing the coil 5, in which a tie rod 19 resting on the leg 9 is arranged. The tie rod 19 is non-positively connected to the press frame part 13. Further details follow in the description of FIGS. 3 to 6.

In der Darstellung der FIG 1 ist deutlich zu erkennen, daß die dem Transformatorkern 3 zugewandten Flächen 21a, 21 vom Zuganker 19 und vom Preßrahmenteil 13 in einer gemeinsamen Ebene liegen. Die Flächen 21a, 21 liegen plan auf dem Transformatorkern 3 auf. Hohlräume zwischen Preßrahmen 11 und Transformatorkern 3 sind nicht vorhanden. Die Pressung und Verspannung des Transformatorkerns 3 ist verbessert. Die entstehenden Zug- und Spannkräfte zwischen dem Preßrahmenteil 13 und Zuganker 19 liegen vorteilhafterweise in der Ebene des Zugankers 19. Das Rahmenverbundsystem 16a besteht im wesentlichen aus nur zwei Elementen, was zu einer Reduzierung der Lagerhaltung führt. Die Elemente sind auch besonders einfach herstellbar, da sie aus Standard-Profilen mit nur wenigen Arbeitsgängen fertigbar sind.1 clearly shows that the transformer core 3 is supplied facing surfaces 21a, 21 of the tie rod 19 and the press frame part 13 lie in a common plane. The surfaces 21a, 21 lie flat on the transformer core 3. Cavities between the press frame 11 and transformer core 3 are not present. The pressing and tensioning of the transformer core 3 is improved. The resulting tensile and tension forces between the press frame part 13 and tie rod 19 are advantageously in the plane of the tie rod 19. The frame composite system 16a essentially consists of only two elements, which leads to a reduction in storage. The elements are also particularly easy to manufacture, since they can be manufactured from standard profiles in just a few steps.

Zum Verspannen der Spule 5 in Achsrichtung ist zwischen der Spule 5 und dem Preßrahmenteil 13 ein Keil 23 angeordnet, der als Spannvorrichtung dient. Der Keil 23 ist vorzugsweise mit einer vorgegebenen Kraft eingepreßt. Dies kann auch dadurch erzielt werden, daß der Keil ein vorgegebenes Wegstück eingepreßt wird. Auf diese Weise kann auch bei abweichenden Abmessungen von Spule 5 und Preßrahmenteil 13 immer die gleiche Verspannkraft eingehalten werden. Der Keil 5 kann dabei mit einer selbst- oder rutschhemmenden Oberfläche bzw. Keilsteigung versehen sein. Es kann auch eine zusätzliche Sicherung, z.B. eine Lacksicherung oder Verstiftung, vorgesehen werden. Für jede Spule 5 werden mehrere Keile 23 je Preßrahmenteil 13 verwendet. Bevorzugt ist der Keil 23 in einer Vertiefung 23a der Spulenabstützung 7 angeordnet. Auf diese Weise ist der Keil 23 seitlich geführt. Darüberhinaus liegt er flach am Preßrahmenteil 13 an, wodurch die Verspannung verbessert ist. Die Spulenabstützung 7 kann im übrigen auch von einem Spulenkörper gebildet sein.To clamp the coil 5 in the axial direction, a wedge 23 is arranged between the coil 5 and the press frame part 13 and serves as a clamping device. The wedge 23 is preferably pressed in with a predetermined force. This can also be achieved in that the wedge is pressed in a predetermined distance. In this way, the same clamping force can always be maintained even with different dimensions of the coil 5 and the press frame part 13. The wedge 5 can be provided with a self-locking or anti-slip surface or wedge slope. An additional fuse, e.g. a paint protection or pinning can be provided. For each coil 5, several wedges 23 are used per press frame part 13. The wedge 23 is preferably arranged in a recess 23a of the coil support 7. In this way, the wedge 23 is guided laterally. In addition, it lies flat on the press frame part 13, whereby the bracing is improved. The coil support 7 can also be formed by a coil former.

FIG 2 zeigt ein weiteres Ausführungsbeispiel eines Rahmenverbundsystems 16b. Hier weist der Zuganker 19 eine Abwinkelung 24 mit Einstellschraube 25 auf, welche gegen das Preßrahmenteil 13 drückt. Auf diese Weise ist die Zugkraft zwischen Zuganker 19 und Preßrahmenteil 13 variabel einstellbar. Als Spannvorrichtung für die Spule 5 ist eine im Preßrahmenteil 13 geführte Spannschraube 27 vorgesehen, welche zwischen Spule 5 und Preßrahmenteil 13 wirkt. Auch hier kann wie bereits oben beschrieben eine zusätzliche Sicherung angebracht werden. FIG 3 zeigt ein Rahmenverbundsystem 16c nach FIG 1 in einer Seitenansicht. Der Zuganker 19 ist mit einem Eingriffsteil 29 in der Aussparung 17 des Preßrahmenteils 13 angeordnet. Das Eingriffsteil 29 weist einen Hintergriff 31 auf, der an eine Schulter 33 der Aussparung 17 angreift. Die Angriffsfläche des Hintergriffs 31 an der Schulter 33 sollte zumindest so groß sein, wie die kleinste Querschnittsfläche des Zugankers 19. Auf diese Weise ist eine zuverlässige Kraftübertragung ohne Beschädigung des Eingriffsteils 29 gegeben.2 shows a further exemplary embodiment of a frame composite system 16b. Here the tie rod 19 has a bend 24 with an adjusting screw 25 which presses against the press frame part 13. In this way, the tensile force between tie rod 19 and press frame part 13 is variably adjustable. A tensioning screw 27, which is guided in the press frame part 13 and acts between the coil 5 and the press frame part 13, is provided as the tensioning device for the coil 5. An additional fuse can also be attached here, as already described above. 3 shows a frame composite system 16c according to FIG. 1 in a side view. The tie rod 19 is arranged with an engagement part 29 in the recess 17 of the press frame part 13. The engagement part 29 has a rear grip 31 which engages on a shoulder 33 of the recess 17. The area of engagement of the rear grip 31 on the shoulder 33 should be at least as large as the smallest cross-sectional area of the tie rod 19. In this way, reliable power transmission without damage to the engagement part 29 is provided.

FIG 4 zeigt eine Variation des Rahmenverbundsystems 16d, bei der eine Verstellmöglichkeit gegeben ist. Die Aussparung 17 weist dazu mehrere hintereinanderliegende Schultern 33a, 33b auf, so daß das Eingriffsteil 29 in mehreren Stellungen anordbar ist. Dadurch ist das Rahmenverbundsystem 16d beispielsweise auf verschiedene Transformatorgrößen oder unterschiedliche Zugkräfte einstellbar.4 shows a variation of the frame composite system 16d, in which an adjustment possibility is given. For this purpose, the recess 17 has a plurality of shoulders 33a, 33b lying one behind the other, so that the engagement part 29 can be arranged in a plurality of positions. As a result, the composite frame system 16d can be set, for example, to different transformer sizes or different tensile forces.

FIG 5 zeigt eine weitere Variante des Rahmenverbundsystems 16e. Dabei ist die Aussparung 17, in die das Eingriffsteil 29 passend eingreift in einem Distanzelement 35a vorgesehen, welches wiederum in einer Öffnung 37 des Preßrahmenteils 13 angeordnet ist. Durch Verwendung verschieden großer Distanzelemente 35a kann hier die Zugkraft des Rahmenverbundsystems 16e eingestellt werden.5 shows a further variant of the frame composite system 16e. The recess 17, in which the engagement part 29 engages appropriately, is provided in a spacer element 35a, which in turn is arranged in an opening 37 of the press frame part 13. By using spacer elements 35a of different sizes, the tensile force of the composite frame system 16e can be set here.

FIG 6 zeigt ein Rahmenverbundsystem 16f in einer Kombination der Ausführungen von FIG 4 und FIG 5, bei der zusätzlich das Distanzelement 35b in der Öffnung 37 einstellbar angeordnet ist. Das Distanzelement 35b, weist dazu hintereinanderliegende Hintergriffe 31a, 31 b auf, die an den Schultern 33a, 33b angreifen. Das Distanzelement 35a, 35b aus FIG 5 und FIG 6 kann auch zum Ausgleich von Toleranzen beim Transformatorkern 3 oder beim Rahmenverbundsystem 16e bis 16g dienen.FIG. 6 shows a frame composite system 16f in a combination of the designs from FIGS. 4 and 5, in which the spacer element 35b is additionally arranged in the opening 37 in an adjustable manner. For this purpose, the spacer element 35b has rear grips 31a, 31b, which act on the shoulders 33a, 33b. The spacer element 35a, 35b from FIG. 5 and FIG. 6 can also serve to compensate for tolerances in the transformer core 3 or in the frame composite system 16e to 16g.

FIG 7 zeigt eine Ausgestaltung des Rahmenverbundsystems 16g in einem Längsschnitt, bei dem das Preßrahmenteil 13 auf einer dem Transformatorkern 3 abgewandten Fläche 38 im Bereich der Aussparung 17 eine Halteabdeckung 39 für den Zuganker 19 aufweist. Auf diese Weise ist der Zuganker 19 bereits bei der Montage in der Aussparung 17 gegen Verkanten, Abrutschen oder Verdrehen gesichert. Diese Ausgestaltung kann fertigungstechnisch dadurch hergestellt werden, daß das für die Aussparung 17 aus dem Preßrahmenteil 13 herauszubringende Material durchgepreßt oder -gestanzt wird, so daß das Material die Halteabdekkung 39 bildet.7 shows an embodiment of the composite frame system 16g in a longitudinal section, in which the press frame part 13 has a holding cover 39 for the tie rod 19 on a surface 38 facing away from the transformer core 3 in the region of the recess 17. In this way, the tie rod 19 is already secured against tilting, slipping or twisting during assembly in the recess 17. This configuration can be produced in terms of production engineering in that the material to be brought out of the press frame part 13 for the recess 17 is pressed or punched through, so that the material forms the holding cover 39.

Der Zuganker 19 kann bei den verschiedenen Ausführungen unterschiedlich ausgestaltet sein. Die Form des Eingriffsteils ist beliebig vorgebbar. Es kann dabei, wie in FIG 3 und 4 dargestellt, angesetzt sein, oder, wie in FIG 5 und 6 dargestellt, aus einem breiten Flachband herausgeformt werden. Selbstverständlich können auch Kombinationen der beispielhaft beschriebenen Ausführungen vom Fachmann vorgesehen werden. Dies betrifft insbesondere die Kombination des Rahmenverbundsystems mit verschiednen Spannvorrichtungen für die Spule.The tie rod 19 can be designed differently in the different versions. The shape of the engagement part can be predetermined as desired. It can, as shown in FIGS. 3 and 4, be attached, or, as shown in FIGS. 5 and 6, formed from a wide flat strip. Of course, combinations of the exemplary embodiments described can also be provided by the person skilled in the art. This applies in particular to the combination of the composite frame system with various tensioning devices for the coil.

Claims (13)

1. Rahmenverbundsystem (16a bis 16g) zwischen wenigstens einem Preßrahmenteil (13) und einem Zuganker (19) eines Preßrahmens (11) eines Transformatorkerns (3), wobei jeweils eine Fläche (21a,21b) des Zugankers (19) und des Preßrahmenteils (13), die dem Transformatorkern (3) zugewandt werden sollen, in einer gemeinsamen Ebene anordbar sind, und mit einer Kombination aus einer Aussparung (17) und einem dazu passenden Eingriffsteil (29) zwischen Preßrahmenteil (13) und Zuganker (19) in dem Sinne, daß die betroffenen beiden Flächen (21a,21b) in der gemeinsamen Ebene liegen.1. frame composite system (16a to 16g) between at least one press frame part (13) and a tie rod (19) of a press frame (11) of a transformer core (3), each with a surface (21a, 21b) of the tie rod (19) and the press frame part ( 13), which should face the transformer core (3), can be arranged in a common plane, and with a combination of a recess (17) and a matching engagement part (29) between the press frame part (13) and tie rod (19) in the Meaning that the two areas concerned (21a, 21b) lie in the common plane. 2. Rahmenverbundsystem nach Anspruch 1, wobei die dem Transformatorkern (3) zugewandten Flächen (21 a,21 b) im Sinne einer planen Auflage auf dem Transformatorkern (3) montierbar sind.2. Frame composite system according to claim 1, wherein the surfaces (21 a, 21 b) facing the transformer core (3) can be mounted in the sense of a flat support on the transformer core (3). 3. Rahmenverbundsystem nach Anspruch 1 oder 2, wobei die Aussparung (17) am Preßrahmenteil (21a,21b) und das Eingriffsteil am Zuganker (19) angeordnet sind.3. Frame composite system according to claim 1 or 2, wherein the recess (17) on the press frame part (21a, 21b) and the engagement part on the tie rod (19) are arranged. 4. Rahmenverbundsystem nach Anspruch 3, wobei das Eingriffsteil (29) als Hintergriff (31,31 a,31 b) ausgebildet ist, der in die Aussparung (17) des Preßrahmenteils (13) eingreift.4. Frame composite system according to claim 3, wherein the engagement part (29) is designed as a rear grip (31, 31 a, 31 b) which engages in the recess (17) of the press frame part (13). 5. Rahmenverbundsystem nach Anspruch 4, wobei die Aussparung (17) von einem Distanzelement (35a,35b) gebildet ist, das in einer Öffnung (37) des Preßrahmenteils (13) angeordnet ist.5. Frame composite system according to claim 4, wherein the recess (17) is formed by a spacer element (35a, 35b) which is arranged in an opening (37) of the press frame part (13). 6. Rahmenverbundsystem nach Anspruch 5, wobei das Distanzelement (35a,35b) in Zugrichtung des Zugankers (19) verstellbar in der Öffnung (37) anordbar ist.6. Frame composite system according to claim 5, wherein the spacer element (35a, 35b) in the pulling direction of the tie rod (19) is adjustable in the opening (37) can be arranged. 7. Rahmenverbundsystem nach einem der Ansprüche 4 bis 6, wobei die Angriffsfläche des Hintergriffs (31,31a,31b) an der Aussparung (17) zumindest der kleinsten Querschnittsfläche des Zugankers (19) entspricht.7. Frame composite system according to one of claims 4 to 6, wherein the engagement surface of the rear grip (31, 31a, 31b) at the recess (17) corresponds to at least the smallest cross-sectional area of the tie rod (19). 8. Rahmenverbundsystem nach einem der Ansprüche 4 bis 7, wobei das Preßrahmenteil (13) auf einer dem Transformatorkern (3) abgewandten Fläche (38) im Bereich der Aussparung (17) eine Halteabdeckung (39) für den Zuganker (19)aufweist.8. composite frame system according to one of claims 4 to 7, wherein the press frame part (13) on a surface facing away from the transformer core (3) (38) in the region of the recess (17) has a holding cover (39) for the tie rod (19). 9. Rahmenverbundsystem nach einem der Ansprüche 1 bis 8, wobei der Zuganker (19) aus einem Flachmetallstück gefertigt ist und der Hintergriff (31,31a,31b) in einer Ebene des Zugankers (19) liegt.9. Frame composite system according to one of claims 1 to 8, wherein the tie rod (19) is made of a flat metal piece and the rear grip (31, 31a, 31b) lies in one plane of the tie rod (19). 10. Rahmenverbundsystem nach einem der Ansprüche 1 bis 9, wobei das Preßrahmenteil (13) eine Spannvorrichtung zum Verspannen einer auf einem Schenkel (9) des Transformatorskerns (3) anordbaren Spule (5) umfaßt.10. Composite frame system according to one of claims 1 to 9, wherein the press frame part (13) comprises a tensioning device for tensioning a coil (5) which can be arranged on one leg (9) of the transformer core (3). 11. Rahmenverbundsystem nach Anspruch 10, wobei die Spannvorrichtung zumindest eine im Preßrahmenteil (13) geführte Spannschraube (27) umfaßt.11. The composite frame system according to claim 10, wherein the clamping device comprises at least one clamping screw (27) guided in the press frame part (13). 12. Rahmenverbundsystem nach Anspruch 10 oder 11, wobei die Spannvorrichtung zumindest einen zwischen dem Preßrahmenteil (13) und der Spule (5) anordbaren Keil (23) umfaßt.12. Composite frame system according to claim 10 or 11, wherein the clamping device comprises at least one wedge (23) which can be arranged between the press frame part (13) and the coil (5). 13. Rahmenverbundsystem nach Anspruch 12, wobei der Keil (23) mit einer vorgegebbaren Kraft zwischen Preßrahmenteil (13) und Spule (5) einpreßbar ist.13. Frame composite system according to claim 12, wherein the wedge (23) with a predetermined force between the press frame part (13) and the coil (5) can be pressed.
EP90118717A 1990-09-28 1990-09-28 Frame joining system Expired - Lifetime EP0477423B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT90118717T ATE130698T1 (en) 1990-09-28 1990-09-28 COMPOSITE FRAME SYSTEM.
EP90118717A EP0477423B1 (en) 1990-09-28 1990-09-28 Frame joining system
DE59009903T DE59009903D1 (en) 1990-09-28 1990-09-28 Frame system.
TW080107632A TW207024B (en) 1990-09-28 1991-09-26
US08/231,863 US5430425A (en) 1990-09-28 1994-04-22 Integrated frame system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90118717A EP0477423B1 (en) 1990-09-28 1990-09-28 Frame joining system

Publications (2)

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EP0477423A1 true EP0477423A1 (en) 1992-04-01
EP0477423B1 EP0477423B1 (en) 1995-11-22

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EP90118717A Expired - Lifetime EP0477423B1 (en) 1990-09-28 1990-09-28 Frame joining system

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US (1) US5430425A (en)
EP (1) EP0477423B1 (en)
AT (1) ATE130698T1 (en)
DE (1) DE59009903D1 (en)
TW (1) TW207024B (en)

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IT202100002594A1 (en) * 2021-02-05 2022-08-05 H&F S R L IMPROVED PRESS-YOKE FOR AN ELECTRIC TRANSFORMING DEVICE AND ELECTRICAL TRANSFORMING DEVICE OBTAINED WITH IT

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Also Published As

Publication number Publication date
ATE130698T1 (en) 1995-12-15
US5430425A (en) 1995-07-04
TW207024B (en) 1993-06-01
EP0477423B1 (en) 1995-11-22
DE59009903D1 (en) 1996-01-04

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