EP0651410B1 - Driving device for electrical switchgear - Google Patents

Driving device for electrical switchgear

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Publication number
EP0651410B1
EP0651410B1 EP93117704A EP93117704A EP0651410B1 EP 0651410 B1 EP0651410 B1 EP 0651410B1 EP 93117704 A EP93117704 A EP 93117704A EP 93117704 A EP93117704 A EP 93117704A EP 0651410 B1 EP0651410 B1 EP 0651410B1
Authority
EP
European Patent Office
Prior art keywords
shaft
lever
driving device
lever element
positioning element
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.)
Expired - Lifetime
Application number
EP93117704A
Other languages
German (de)
French (fr)
Other versions
EP0651410A1 (en
Inventor
Rolf Niklaus
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.)
General Electric Switzerland GmbH
Original Assignee
GEC Alsthom T&D 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 GEC Alsthom T&D AG filed Critical GEC Alsthom T&D AG
Priority to DE59305652T priority Critical patent/DE59305652D1/en
Priority to AT93117704T priority patent/ATE149734T1/en
Priority to EP93117704A priority patent/EP0651410B1/en
Publication of EP0651410A1 publication Critical patent/EP0651410A1/en
Application granted granted Critical
Publication of EP0651410B1 publication Critical patent/EP0651410B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a drive device for an electrical switching device according to the preamble of claim 1.
  • a drive device of this type for a circuit breaker is known from US Pat. No. 4,126,773.
  • a lever element sits in a rotationally fixed manner and has a certain thickness in the direction of the shaft axis.
  • the passage penetrated by the shaft in the lever element corresponds to the cross section of the shaft for mutual positive connection in the circumferential direction.
  • a fastening element made of sheet metal is pushed onto the shaft, which likewise has a passage corresponding to the cross-section of the shaft, which extends obliquely with respect to a perpendicular to the plane of the fastening element.
  • the fastening element is pulled onto the lever element by means of a screw, as a result of which it becomes stuck in the axial direction by tilting on the shaft and axially fixes the lever element on the shaft. It is extremely difficult to maintain the exact axial position of the lever on the shaft. In addition, the manufacture of the fastening element with the inclined passage is extremely complex.
  • EP-A-0 385 265 and corresponding U.S. Patent No. 4,996,397 disclose a drive device for a circuit breaker in which lever and others Elements are positively and, if necessary, pushed onto a polygonal shaft with the interposition of spacers. In the axial direction, these pushed-on elements are pressed against each other and axially fixed by screws screwed into the shaft at both ends. In this drive device, due to the axial pressing against one another, all elements seated on the shaft are connected to it in a rotationally fixed manner. For elements that can be rotated with respect to the shaft, separate bearing bushes that are non-rotatably seated on the shaft must be provided. Furthermore, the spacers increase the moving mass, which can impair the function of the drive, in particular its speed.
  • lever element Since the lever element is held in axial contact with a positioning element inserted into a groove in the shaft, its axial position with respect to the shaft is precisely defined. All required parts, such as the ring-like positioning element and screw-like clamping means, are common mass-produced articles or, like the lever element and the fastening element, can be produced easily, for example by stamping. During assembly, the lever element and the fastening element can be pushed onto the shaft in a simple manner and clamped against one another by means of clamping means, for example screws, and thus against the positioning element arranged between them. The effort for this is extremely low if the lever elements are positioned precisely.
  • the number of different parts can be kept low in a particularly preferred embodiment of the drive device according to the invention.
  • the drive device 10 shown in greatly simplified form in the figures, for an electrical switching device 12 for medium or high voltage has a shaft 14, which is rotatably mounted on a frame (not shown) of the drive device 10 and has a polygonal, in the present case square, cross section 15 , on.
  • the shaft 14 is connected to a drive element 16, for example a drive motor, a storage spring or an actuating lever, as well as optionally with generally known releasable latching and supporting devices.
  • a groove 18 running in the circumferential direction, for example through Except turning, in which an annular disk-like positioning element 20, for example a Benzing or Seeger locking ring, is inserted.
  • the width of the groove 18 in the direction of the axis 14 'of the shaft 14 essentially corresponds to the width of the positioning element 20, so that it is fixed axially on the shaft 14.
  • the groove 18 is recessed so deep in the radial direction that the remaining circular residual shaft cross section 22 has a diameter which corresponds to the side length of the square cross section 15 of the shaft 14.
  • the positioning element 22 thus projects over at least part of the circumference of the shaft 14, at least between the edges 24 of the shaft 14.
  • lever element 26 is pushed onto the shaft 14 from both ends and brought into lateral contact with the positioning element 20.
  • the lever elements 26 are punched out of a flat sheet metal strip and have a passage 28 which corresponds in shape and size at least approximately to the polygonal cross section 15 of the shaft 14, so that the lever elements 26 penetrated by the shaft 14 in the passage 28 sit on the latter in a rotationally fixed manner.
  • Seen in the longitudinal direction 26 'of the two parallel lever elements 26, these are diametrically opposed to one another with respect to the axis 14' and, seen in the radial direction, outside the positioning element 20, through which screws 30 extending parallel to the axis 14 'penetrate, with their heads 30' on one side Lever element 26 and its nuts 32 are supported on the other lever element 26.
  • the screw-nut connections form clamping means 34, by means of which the two holding elements 26 are clamped against one another and in are held axially on the positioning element 20.
  • each lever element 26 In the free end region of each lever element 26, a pivot shaft 36 is fastened to it, preferably riveted.
  • a linkage 38 is articulated to the articulation shaft 36 of the one lever element 26 and controls the moving contact 40 of the switching device 12 at the other end.
  • a generally known securing element 42 is arranged in order to hold the linkage 38 in the axial direction between itself and the relevant lever element 26.
  • lever elements 26 can be produced particularly easily and with little effort, it is advisable, as shown in the figures, to always use two lever elements 26, even if only one linkage 38 and the other lever element are articulated on the pivot shaft 36 of a single lever element 26 26 serves only as a fastening element 44 in order to serve as a support for the clamping means 34 and to hold the other lever element 26 in contact with the positioning element 20.
  • lever elements 26 are cam disks or support levers which interact with a ratchet device.
  • the cross section of the shaft 14 can have practically any non-circular shape, so that the rotationally fixed entrainment of the lever element 26 is ensured by a positive fit.
  • a first positioning element 20 is to be inserted into one of the grooves and the corresponding pair of lever elements is to be mounted.
  • a further lever element can then be pushed onto the shaft 14 so that it comes to lie between the pair of already assembled lever elements and another groove.
  • a further positioning element 20 is inserted into this groove, a further lever element is placed, and these two lever elements can then be clamped against one another by means of screws.

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Electronic Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmission Devices (AREA)

Abstract

A groove, into which a positioning element (20) which is like an annular disc is inserted, is cut out on the shaft (14) which has a square cross-section. A lever element (26) is pushed onto each of the two ends of the shaft (14), the aperture in the lever element being formed to correspond to the cross-section of the shaft (14) in order to ensure that it is driven in a rotationally fixed manner. The lever elements (26) are clamped to one another by means of screws (30) and are held in axial contact on the positioning element (20). In consequence, the lever elements (26) are also fixed in the axial direction. <IMAGE>

Description

Die vorliegende Erfindung betrifft eine Antriebseinrichtung für ein elektrisches Schaltgerät gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a drive device for an electrical switching device according to the preamble of claim 1.

Eine Antriebseinrichtung dieser Art für einen Trennschalter ist aus der US-Patentschrift Nr. 4,126,773 bekannt. Auf einer drehbar gelagerten Welle mit sechseckigem Querschnitt sitzt drehfest ein Hebelelement, das in Richtung der Wellenachse eine bestimmte Dicke aufweist. Der von der Welle durchgriffene Durchlass im Hebelelement entspricht dem Querschnitt der Welle zur gegenseitigen formschlüssigen Verbindung in Umfangsrichtung. Neben dem Hebelelement ist ein Befestigungselement aus Blech auf die Welle aufgeschoben, das ebenfalls einen dem Querschnitt der Welle entsprechenden Durchlass aufweist, wobei dieser bezüglich einer Senkrechten zur Ebene des Befestigungselements schräg verläuft. Mittels einer Schraube ist das Befestigungselement an das Hebelelement gezogen, wodurch es durch Verkanten auf der Welle in axialer Richtung festsitzt und das Hebelelement axial auf der Welle fixiert. Dabei ist es äusserst schwierig, die genaue axiale Lage des Hebels auf der Welle einzuhalten. Zudem ist die Herstellung des Befestigungselements mit dem schräg verlaufenden Durchlass äusserst aufwendig.A drive device of this type for a circuit breaker is known from US Pat. No. 4,126,773. On a rotatably mounted shaft with a hexagonal cross section, a lever element sits in a rotationally fixed manner and has a certain thickness in the direction of the shaft axis. The passage penetrated by the shaft in the lever element corresponds to the cross section of the shaft for mutual positive connection in the circumferential direction. In addition to the lever element, a fastening element made of sheet metal is pushed onto the shaft, which likewise has a passage corresponding to the cross-section of the shaft, which extends obliquely with respect to a perpendicular to the plane of the fastening element. The fastening element is pulled onto the lever element by means of a screw, as a result of which it becomes stuck in the axial direction by tilting on the shaft and axially fixes the lever element on the shaft. It is extremely difficult to maintain the exact axial position of the lever on the shaft. In addition, the manufacture of the fastening element with the inclined passage is extremely complex.

Die EP-A-0 385 265 und die entsprechende US-Patentschrift Nr. 4,996,397 offenbaren eine Antriebseinrichtung für einen Leistungsschalter, bei welchem Hebel- und andere Elemente formschlüssig und allenfalls unter Zwischenschaltung von Distanzstücken auf eine mehrkantige Welle aufgeschoben sind. In axialer Richtung werden diese aufgeschobenen Elemente durch beiderends in die Welle eingedrehte Schrauben gegeneinander gepresst und axial festgelegt. Bei dieser Antriebseinrichtung sind infolge des axialen Gegeneinanderpressens alle auf der Welle sitzenden Elemente mit dieser drehfest verbunden. Für bezüglich der Welle drehbare Elemente müssen separate, drehfest auf der Welle sitzende Lagerbüchsen vorgesehen sein. Weiter erhöhen die Distanzstücke die bewegte Masse, was allenfalls die Funktion des Antriebs, inbesondere dessen Schnelligkeit beeinträchtigen kann.EP-A-0 385 265 and corresponding U.S. Patent No. 4,996,397 disclose a drive device for a circuit breaker in which lever and others Elements are positively and, if necessary, pushed onto a polygonal shaft with the interposition of spacers. In the axial direction, these pushed-on elements are pressed against each other and axially fixed by screws screwed into the shaft at both ends. In this drive device, due to the axial pressing against one another, all elements seated on the shaft are connected to it in a rotationally fixed manner. For elements that can be rotated with respect to the shaft, separate bearing bushes that are non-rotatably seated on the shaft must be provided. Furthermore, the spacers increase the moving mass, which can impair the function of the drive, in particular its speed.

Eine weitere Antriebseinrichtung für einen Leistungsschalter offenbart die DE-A-38 34 006. Hier ist ein einstückig aus elastischem Kunststoff gefertigtes Hebelelement mit einem sechseckigen Durchlass auf eine entsprechende Welle aufgeschoben und mittels einer Schraube und eines die Wandung des Hebelelements nicht vollständig durchdringenden Klemmschlitzes auf der Welle befestigt. Dieses Hebelelement ist kompliziert in der Form und Herstellung, wozu teure Werkzeuge benötigt werden. Weiter kann das Hebelelement nur mit relativ kleinen Momenten beansprucht werden, da es aus elastischem Kunststoff gefertigt werden muss.Another drive device for a circuit breaker is disclosed in DE-A-38 34 006. Here, a lever element made in one piece from elastic plastic with a hexagonal passage is pushed onto a corresponding shaft and by means of a screw and a clamping slot on the lever element that does not completely penetrate the wall of the lever element Shaft attached. This lever element is complicated in shape and manufacture, which requires expensive tools. Furthermore, the lever element can only be stressed with relatively small moments, since it has to be made of elastic plastic.

Ausgehend von diesem Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, eine gattungsgemässe Antriebseinrichtung zu schaffen, bei welcher ein leichtes, einfach herstellbares Hebelelement mit grosser Genauigkeit auf einer Welle axial positionierbar ist und ein grosses Drehmoment übertragen kann.Starting from this prior art, it is an object of the present invention to provide a generic drive device in which a light, easy-to-produce lever element can be axially positioned on a shaft with great accuracy and a large torque can transmit.

Diese Aufgabe wird durch eine gattungsbildende Antriebseinrichtung gelöst, die die Merkmale im Kennzeichen des unabhängigen Anspruchs 1 aufweist.This object is achieved by a generic drive device which has the features in the characterizing part of independent claim 1.

Da das Hebelelement an einem in eine Nut der Welle eingesetzten Positionierelement in axialer Anlage gehalten ist, ist seine axiale Lage bezüglich der Welle genau definiert. Sämtliche benötigten Teile, wie beispielsweise das ringartige Positionierelement und schraubenartige Spannmittel, sind geläufige Massenartikel oder wie das Hebelelement und das Befestigungselement einfach, beispielsweise durch Stanzen, herstellbar. Das Hebelelement und das Befestigungselement können bei der Montage in einfacher Art und Weise auf die Welle aufgeschoben und mittels Spannmitteln, beispielsweise Schrauben, gegeneinander und somit gegen das dazwischen angeordnete Positionierelement gespannt werden. Der Aufwand dazu ist bei genauer Positionierung der Hebelelemente äusserst gering.Since the lever element is held in axial contact with a positioning element inserted into a groove in the shaft, its axial position with respect to the shaft is precisely defined. All required parts, such as the ring-like positioning element and screw-like clamping means, are common mass-produced articles or, like the lever element and the fastening element, can be produced easily, for example by stamping. During assembly, the lever element and the fastening element can be pushed onto the shaft in a simple manner and clamped against one another by means of clamping means, for example screws, and thus against the positioning element arranged between them. The effort for this is extremely low if the lever elements are positioned precisely.

Mit einer bevorzugten Ausbildungsform der erfindungsgemässen Antriebseinrichtung gemäss Anspruch 2 lassen sich besonders grosse Drehmomente übertragen und werden mit geringem Aufwand unterschiedliche Anlenkungen ermöglicht.With a preferred embodiment of the drive device according to the invention, particularly high torques can be transmitted and different articulations are made possible with little effort.

Die Anzahl unterschiedlicher Teile kann bei einer besonders bevorzugten Ausbildungsform der erfindungsgemässen Antriebseinrichtung gemäss Anspruch 3 gering gehalten werden.The number of different parts can be kept low in a particularly preferred embodiment of the drive device according to the invention.

Als besonders einfach erweist sich die Verwendung von handelsüblichen Seeger- oder Benzingringen als Positionierelement, wie es im Anspruch 4 angegeben ist.It is particularly easy to use commercially available ones Seeger or gasoline rings as a positioning element, as specified in claim 4.

Weitere bevorzugte Ausbildungsformen der erfindungsgemässen Antriebseinrichtung sind in den Ansprüchen 5 und 6 angegeben.Further preferred embodiments of the drive device according to the invention are specified in claims 5 and 6.

Die vorliegende Erfindung wird nun anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen rein schematisch:

Fig. 1
in Draufsicht einen Teil einer erfindungsgemässen Antriebseinrichtung mit einer Welle und darauf drehfest angeordneten Hebelelementen; und
Fig. 2
in Ansicht den in der Fig. 1 gezeigten Teil der Antriebseinrichtung.
The present invention will now be explained in more detail with reference to an embodiment shown in the drawing. It shows purely schematically:
Fig. 1
in plan view part of a drive device according to the invention with a shaft and lever elements arranged non-rotatably thereon; and
Fig. 2
in view the part of the drive device shown in FIG. 1.

Die in den Figuren stark vereinfacht gezeigte Antriebseinrichtung 10 für ein elektrisches Schaltgerät 12 für Mittel- oder Hochspannung weist eine, in allgemein bekannter Art und Weise an einem nicht gezeigten Gestell der triebseinrichtung 10 drehbar gelagerte Welle 14 mit einem polygonalen, im vorliegenden Fall quadratischen Querschnitt 15, auf. Wie schematisch in der Fig. 1 angedeutet, ist die Welle 14 mit einem Antriebsorgan 16, beispielsweise einem Antriebsmotor, einer Speicherfeder oder einem Betätigungshebel, sowie gegebenenfalls mit allgemein bekannten lösbaren Verklinkungs- und Abstützeinrichtungen bunden.The drive device 10, shown in greatly simplified form in the figures, for an electrical switching device 12 for medium or high voltage has a shaft 14, which is rotatably mounted on a frame (not shown) of the drive device 10 and has a polygonal, in the present case square, cross section 15 , on. As indicated schematically in FIG. 1, the shaft 14 is connected to a drive element 16, for example a drive motor, a storage spring or an actuating lever, as well as optionally with generally known releasable latching and supporting devices.

An der Welle 14 ist an einer vorgegebenen Stelle eine in Umfangsrichtung verlaufende Nut 18, beispielsweise durch Drehen ausgenommen, in die ein ringscheibenartiges Positionierelement 20, beispielsweise ein Benzing- oder Seeger-Sicherungsring eingesetzt ist. Die Breite der Nut 18 in Richtung der Achse 14' der Welle 14 entspricht im wesentlichen der Breite des Positionierelements 20, so dass dieses axial auf der Welle 14 festgelegt ist. Im gezeigten Beispiel ist die Nut 18 in radialer Richtung so tief ausgenommen, dass der verbleibende kreisrunde Restwellenquerschnitt 22 einen Durchmesser aufweist, der der Seitenlänge des quadratischen Querschnitts 15 der Welle 14 entspricht. Das Positionierelement 22 steht somit mindestens auf einem Teil des Umfangs der Welle 14 über diese vor, mindestens zwischen den Kanten 24 der Welle 14.On the shaft 14 there is a groove 18 running in the circumferential direction, for example through Except turning, in which an annular disk-like positioning element 20, for example a Benzing or Seeger locking ring, is inserted. The width of the groove 18 in the direction of the axis 14 'of the shaft 14 essentially corresponds to the width of the positioning element 20, so that it is fixed axially on the shaft 14. In the example shown, the groove 18 is recessed so deep in the radial direction that the remaining circular residual shaft cross section 22 has a diameter which corresponds to the side length of the square cross section 15 of the shaft 14. The positioning element 22 thus projects over at least part of the circumference of the shaft 14, at least between the edges 24 of the shaft 14.

Auf die Welle 14 ist von beiden Enden her je gegengleich ein identisches Hebelelement 26 aufgeschoben und in seitliche Anlage an das Positionierelement 20 gebracht. Die Hebelelemente 26 sind aus einem ebenen Blechstreifen ausgestanzt und weisen einen Durchlass 28 auf, welcher in Form und Grösse mindestens annähernd dem polygonalen Querschnitt 15 der Welle 14 entspricht, so dass die im Durchlass 28 von der Welle 14 durchgriffenen Hebelelemente 26 drehfest auf letzteren sitzen. In Längsrichtung 26' der beiden parallelen Hebelelemente 26 gesehen, sind diese bezüglich der Achse 14' einander diametral gegenüberliegend und in radialer Richtung gesehen ausserhalb des Positionierelements 20 von parallel zur Achse 14' verlaufenden Schrauben 30 durchgriffen, die sich mit ihren Köpfen 30' am einen Hebelelement 26 und deren Muttern 32 sich am anderen Hebelelement 26 abstützen. Die Schraube-Mutter-Verbindungen bilden Spannmittel 34, mittels welchen die beiden Halteelemente 26 gegeneinander gespannt und in axialer Anlage am Positionierelement 20 gehalten sind.An identical lever element 26 is pushed onto the shaft 14 from both ends and brought into lateral contact with the positioning element 20. The lever elements 26 are punched out of a flat sheet metal strip and have a passage 28 which corresponds in shape and size at least approximately to the polygonal cross section 15 of the shaft 14, so that the lever elements 26 penetrated by the shaft 14 in the passage 28 sit on the latter in a rotationally fixed manner. Seen in the longitudinal direction 26 'of the two parallel lever elements 26, these are diametrically opposed to one another with respect to the axis 14' and, seen in the radial direction, outside the positioning element 20, through which screws 30 extending parallel to the axis 14 'penetrate, with their heads 30' on one side Lever element 26 and its nuts 32 are supported on the other lever element 26. The screw-nut connections form clamping means 34, by means of which the two holding elements 26 are clamped against one another and in are held axially on the positioning element 20.

Im freien Endbereich jedes Hebelelements 26 ist an diesen ein Anlenkschaft 36 befestigt, vorzugsweise angenietet. An den Anlenkschaft 36 des einen Hebelelements 26 ist ein Gestänge 38 angelenkt, das andernends den bewegten Kontakt 40 des Schaltgerätes 12 steuert. Am freien Ende des betreffenden Anlenkschafts 36 ist ein allgemein bekanntes Sicherungselement 42 angeordnet, um das Gestänge 38 zwischen sich und dem betreffenden Hebelelement 26 in axialer Richtung zu halten.In the free end region of each lever element 26, a pivot shaft 36 is fastened to it, preferably riveted. A linkage 38 is articulated to the articulation shaft 36 of the one lever element 26 and controls the moving contact 40 of the switching device 12 at the other end. At the free end of the respective pivot shaft 36, a generally known securing element 42 is arranged in order to hold the linkage 38 in the axial direction between itself and the relevant lever element 26.

Es wäre durchaus denkbar, am Anlenkschaft 36 des anderen Hebelelements 26 ebenfalls ein Gestänge anzulenken, oder die Anlenkschäfte 36 der beiden Hebelelemente 26 mit einem einzigen Gestänge zu verbinden, um besonders grosse Drehmomente zu übertragen.It would also be conceivable to also link a linkage to the linkage shaft 36 of the other lever element 26, or to connect the linkage shafts 36 of the two lever elements 26 to a single linkage in order to transmit particularly high torques.

Da die vorgeschlagenen Hebelelemente 26 besonders einfach und mit wenig Aufwand herstellbar sind, empfiehlt es sich wie in den Figuren gezeigt, immer zwei Hebelelemente 26 zu verwenden, auch wenn nur an den Anlenkschaft 36 eines einzigen Hebelelements 26 ein Gestänge 38 angelenkt wird und das andere Hebelelement 26 einzig als Befestigungselement 44 dient, um den Spannmitteln 34 als Abstützung zu dienen und das andere Hebelelement 26 in Anlage am Positionierelement 20 zu halten.Since the proposed lever elements 26 can be produced particularly easily and with little effort, it is advisable, as shown in the figures, to always use two lever elements 26, even if only one linkage 38 and the other lever element are articulated on the pivot shaft 36 of a single lever element 26 26 serves only as a fastening element 44 in order to serve as a support for the clamping means 34 and to hold the other lever element 26 in contact with the positioning element 20.

Selbstverständlich ist es auch möglich, die Hebelelemente 26 als Kurvenscheiben oder mit einer Klinkenvorrichtung zusammenwirkende Abstützhebel auszubilden.Of course, it is also possible to design the lever elements 26 as cam disks or support levers which interact with a ratchet device.

Der Querschnitt der Welle 14 kann praktisch jede beliebige nicht kreisrunde Form aufweisen, so dass die drehfeste Mitnahme des Hebelelements 26 durch Formschluss gewährleistet ist.The cross section of the shaft 14 can have practically any non-circular shape, so that the rotationally fixed entrainment of the lever element 26 is ensured by a positive fit.

Es ist selbstverständlich möglich, auf einer einzigen Welle 14 eine Mehrzahl von Hebelelementpaaren anzuordnen. Es ist dabei ein erstes Positionierelement 20 in eine der Nuten einzusetzen und das entsprechende Hebelelementpaar zu montieren. Anschliessend kann ein weiteres Hebelelement auf die Welle 14 aufgeschoben werden, so dass dieses zwischen dem bereits montierten Hebelelementpaar und einer weiteren Nut zu liegen kommt. Dann wird in diese Nut ein weiteres Positionierelement 20 eingesetzt, ein weiteres Hebelelement aufgesetzt und anschliessend können diese beiden Hebelelemente mittels Schrauben gegeneinander gespannt werden.It is of course possible to arrange a plurality of pairs of lever elements on a single shaft 14. A first positioning element 20 is to be inserted into one of the grooves and the corresponding pair of lever elements is to be mounted. A further lever element can then be pushed onto the shaft 14 so that it comes to lie between the pair of already assembled lever elements and another groove. Then a further positioning element 20 is inserted into this groove, a further lever element is placed, and these two lever elements can then be clamped against one another by means of screws.

Claims (6)

  1. Driving device for an electrical switchgear, particularly for medium and high voltage, having a rotating mounted shaft (14) displaying a polygonal cross-section, a lever element (26) and a securing element (44), each of which displaying a channel (28) corresponding substantially with the cross-section (15) of the shaft (14), through which the shaft (14) is led in such a way as to mate due to its shape, and with tensioning means (34) for tensioning against each other the lever element (26) and the securing element (44) towards the shaft axis (14') and for fixing the lever element (26) axially against the shaft (14), characterized in that the shaft (14) displays a circumferentially running groove (18) into which an annular positioning element (20) is inserted that projects radially beyond the circumference of the shaft (14) for at least part of the circumference of the shaft (14), and the lever element (26) and the securing element (44) are positioned on either side of the positioning element (20) and are held by the tensioning means (34) in an axial arrangement on the positioning element (20).
  2. Driving device as in claim 1, characterized in that the securing element (44) is formed by a second lever element (26).
  3. Driving device as in claim 2, characterized in that the lever elements (26) are of identical shape.
  4. Driving device as in any of the claims 1 to 3, characterized in that the positioning element (20) is a Seeger or Benzing circlip ring.
  5. Driving device as in any of the claims 1 to 4, characterized in that the tensioning means (34) preferably display screws (30, 32) diametrically opposite each other with reference to the shaft axis (14').
  6. Driving device as in any of the claims 1 to 5, characterized in that the lever element (26) and the securing element (44) are stamped from one sheet.
EP93117704A 1993-11-02 1993-11-02 Driving device for electrical switchgear Expired - Lifetime EP0651410B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59305652T DE59305652D1 (en) 1993-11-02 1993-11-02 Drive device for an electrical switching device
AT93117704T ATE149734T1 (en) 1993-11-02 1993-11-02 DRIVE DEVICE FOR AN ELECTRICAL SWITCHING DEVICE
EP93117704A EP0651410B1 (en) 1993-11-02 1993-11-02 Driving device for electrical switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93117704A EP0651410B1 (en) 1993-11-02 1993-11-02 Driving device for electrical switchgear

Publications (2)

Publication Number Publication Date
EP0651410A1 EP0651410A1 (en) 1995-05-03
EP0651410B1 true EP0651410B1 (en) 1997-03-05

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EP93117704A Expired - Lifetime EP0651410B1 (en) 1993-11-02 1993-11-02 Driving device for electrical switchgear

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AT (1) ATE149734T1 (en)
DE (1) DE59305652D1 (en)

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* Cited by examiner, † Cited by third party
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US4131381A (en) * 1977-11-21 1978-12-26 Alberts Albert K Means and method for mounting a structure on a shaft
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DE4038766A1 (en) * 1990-12-05 1992-06-11 Abb Patent Gmbh Mechanical connector for shafts of differing cross=section - uses packets of steel punchings fitted to shafts and bolted together

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ATE149734T1 (en) 1997-03-15
DE59305652D1 (en) 1997-04-10
EP0651410A1 (en) 1995-05-03

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