EP3815120B1 - Driving an electrical switching contact and an alarm switch - Google Patents

Driving an electrical switching contact and an alarm switch Download PDF

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Publication number
EP3815120B1
EP3815120B1 EP18830144.4A EP18830144A EP3815120B1 EP 3815120 B1 EP3815120 B1 EP 3815120B1 EP 18830144 A EP18830144 A EP 18830144A EP 3815120 B1 EP3815120 B1 EP 3815120B1
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EP
European Patent Office
Prior art keywords
transmission shaft
gear arrangement
gear
slotted link
slide
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.)
Active
Application number
EP18830144.4A
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German (de)
French (fr)
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EP3815120A1 (en
Inventor
Martin Birkholz
Patrick GANSER
Rene Guenther
Andre Luthardt
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 Energy Global GmbH and Co KG
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Siemens Energy Global GmbH and Co KG
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Publication of EP3815120A1 publication Critical patent/EP3815120A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • 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
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • 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
    • H01H9/0066—Auxiliary contact devices

Definitions

  • the invention relates to a gear arrangement for the synchronized driving of an electrical switching contact and a signaling switch.
  • the patent specification DE 102 05 334 C1 an electrical switching arrangement with a first switching contact and a second switching contact can be removed.
  • the two switching contacts are each arranged to be linearly displaceable, with a movement being coupled to the two switching contacts via a rotatable connecting link.
  • the disclosure document DE 10 2013 213 303 A1 an electrical switch can be removed. On the electrical switch, a rotary movement is converted into an oscillating movement of a switch component.
  • a swivel arm is arranged on a motor shaft, which drives a carriage via a contact roller.
  • DE 10 2006 031 220 A1 discloses a gear arrangement for driving at least one electrical switching contact.
  • the transmission arrangement has a link arrangement which is connected to a link scanning element and can be moved relative to the link scanning element and has a link gear.
  • the link arrangement has at least a first and a second sub-element, which in each case partially define the link path that can be picked up by the link scanning element.
  • the object of the invention is to improve the drive and the signaling of the switching state of an electrical switching contact.
  • the transmission shaft is rotatable about a longitudinal axis of the transmission shaft by a motor.
  • the gate is rigidly connected to the transmission shaft and has a link gear with two end areas and a central area running between the end areas.
  • the sliding element can be moved linearly.
  • a sliding block guided through the link passage is arranged on the thrust element.
  • the eccentric is rigidly connected to the transmission shaft and has an eccentric nose through which the carriage can be linearly displaced between two end positions.
  • the link gear and the coupling of the eccentric lug to the carriage are designed in such a way that rotation of the transmission shaft causes displacements of the pusher element and the carriage when the sliding block has a position in the middle region of the link gear, and causes no displacements of the pusher element and the carriage when the sliding block has a position in an end area of the link passage.
  • the gear arrangement enables synchronized displacements of the carriage and the pusher element. Since the carriage can be coupled to the switching contact and the sliding element can be coupled to the signaling switch, the signaling switch can be informed of the current switching state of the switching contact via the sliding element be signalled.
  • the switching status can be output by the signaling switch, for example, to a field control device that switches a motor voltage of the motor so that the motor can be switched off when the switching contact has reached a defined switching status. This enables motor control without additional contactors directly based on the signal output by the signaling switch.
  • the motor can coast down without causing further movements of the carriage and the pushing element, since the sliding block has then reached an end area, so that further rotation of the transmission shaft does not cause any displacements of the pushing element and the carriage.
  • the motor coasts down and is stopped by its inertia alone, without the need for a mechanical or electrical motor brake to stop the motor, a complex gearbox or a special freewheel for the motor.
  • This reduces the costs of the gear arrangement compared to gear arrangements with such additional functions and simplifies and shortens the assembly of the gear arrangement, since no adjustment work is required for switching off the motor.
  • no direct current motor is required to brake the motor, so that the gear arrangement can also be used alone with an alternating current motor, as a result of which the gear arrangement can be used in a variety of ways.
  • each end area of the link gear runs along a circular path section of a circular path around the longitudinal axis of the transmission shaft. This prevents the sliding element from being displaced by rotations of the transmission shaft in a structurally simple manner when the sliding block is in a position in an end region of the sliding link gear.
  • the pusher element has a pusher element toothed rack for coupling to the signaling switch.
  • the pusher element can be coupled via the pusher element toothed rack to a signaling switch in particular, which has a signaling switch shaft with an in the push element rack has engaging signaling switch gear.
  • the transmission arrangement has an output shaft which can be coupled to the switching contact and on which an output shaft gear wheel is arranged, and a carriage rack which is arranged on the carriage and with which the output shaft gear wheel engages.
  • the transmission arrangement has a transmission spur gear rigidly connected to the transmission shaft for coupling the transmission shaft to the motor.
  • the transmission shaft can be driven by the motor via the transmission spur gear, for example by means of a motor spur gear that can be driven by the motor and interacts with the transmission spur gear.
  • the carriage has a carriage recess which is delimited by a recess edge against which the eccentric lug rests for moving the carriage and from which the eccentric lug is decoupled when the sliding block is in a position in an end region of the link path. This prevents the carriage from being displaced by rotations of the transmission shaft in a structurally simple manner when the sliding block is in a position in an end region of the sliding link gear.
  • the gate and the transmission shaft can be rigidly connected to one another in two different relative positions, with one side of the gate facing a different end of the transmission shaft in a first relative position than in the second relative position.
  • the gear assembly can be rebuilt, with the backdrop relative to the Transmission shaft is turned.
  • the gear arrangement can advantageously be adapted to a displacement direction which is dependent on the design of the signaling switch and in which the sliding element must be displaced in order to move the signaling switch from an on state to an off state, for example.
  • a reversal of the sense of direction of the movement of the transmission shaft or of the carriage or of the output shaft can be provided.
  • the assignment of its switching times relative to the transmission shaft or the carriage or the output shaft can be adjusted while retaining the signaling switch by controlling it.
  • the pusher element is preferably in the same position in both relative positions of the connecting link and the transmission shaft when the sliding block strikes the same end of the link path. This means that the thrust element can be displaced in the same way in both relative positions of the connecting link and the transmission shaft, with only the direction of rotation of the transmission shaft differing in the two relative positions for displacing the thrust element in a defined direction.
  • a switching device has an electrical switching contact, a motor, a signaling switch and a gear arrangement according to the invention, the transmission shaft of the gear arrangement being rotatable by the motor about the longitudinal axis of the transmission shaft, the carriage of the gear arrangement being coupled to the switching contact and the pushing element of the gear arrangement being connected is linked to the signaling switch.
  • the thrust element of the gear arrangement has a thrust element rack and the signaling switch has a signaling switch shaft on which a signaling switch gear wheel that engages in the thrust element rack is arranged.
  • the link gear of the gear arrangement can be designed in such a way that the amount of a rotation angle of a rotation of the transmission shaft, in which the sliding block crosses the central area of the link gear, corresponds to the amount of a rotation angle by which the signaling switch shaft is rotated during this rotation of the transmission shaft.
  • the link gear of the gear arrangement can be designed in such a way that the amount of a rotation angle of a rotation of the transmission shaft, in which the sliding block crosses the middle area of the link gear, differs from the amount of a rotation angle by which the signaling switch shaft is rotated during this rotation of the transmission shaft.
  • the transmission arrangement has an output shaft coupled to the switching contact, on which an output shaft gear wheel is arranged, and on the carriage of the transmission arrangement a carriage rack is arranged, in which the output shaft gear wheel engages.
  • a spur gear is arranged on the transmission shaft and the motor is coupled to the transmission shaft via the spur gear and a spur motor which can be driven by the motor and interacts with the spur gear.
  • the only figure shows a perspective representation of a gear arrangement 1 for the synchronized driving of an electrical switching contact (not shown) and a signaling switch 3.
  • the transmission arrangement 1 comprises a transmission shaft 5, an eccentric 7, a connecting link 9, a thrust element 11, a carriage 13, a transmission spur gear 15 and an output shaft 17.
  • the eccentric 7, the setting 9 and the transmission spur gear 15 are rigidly connected to the transmission shaft 5.
  • the transmission shaft 5 can be rotated about a longitudinal axis 19 of the transmission shaft 5 by a motor via the transmission spur gear 15 and a motor spur gear that can be driven by the motor and interacts with the transmission spur gear 15 .
  • the motor and the motor spur gear are not shown in the figure.
  • the gate 9 has a link gear 21 with two end areas 22, 23 and a central area 25 running between the end areas 22, 23.
  • Each end region 22, 23 runs along a circular path section of a circular path around the longitudinal axis 19 of the transmission shaft 5, the two circular paths running in a plane orthogonal to the longitudinal axis 19 and the circular path of a first end region 22 at a smaller distance from the longitudinal axis 19 than the circular path of the second End portion 23 has.
  • a sliding block 27 which is guided through the link passage 21 , is arranged on the sliding element 11 .
  • the thrust element 11 is linearly displaced when the transmission shaft 5 rotates about the longitudinal axis 19, orthogonally to the longitudinal axis 19, with the direction of this displacement depending on the direction of rotation of the transmission shaft 5. Due to the course of the end regions 22, 23 of the slideway 21 along circular path sections of circular paths about the longitudinal axis 19, a rotation of the transmission shaft 5 about the longitudinal axis 19 does not change the position of the sliding block 27 and therefore also does not cause any displacement of the pushing element 11 when the sliding block 27 moves a Position in one of the two end regions 22, 23 of the link gear 21 has.
  • the sliding element 11 is coupled to the signaling switch 3 .
  • the pusher element 11 has a pusher element rack 29, which runs orthogonally to the longitudinal axis 19 and parallel to a displacement direction of the pusher element 11, and the signaling switch 3 has a signaling switch shaft 31 that is arranged parallel to the transmission shaft 5 and on which a signaling switch gear wheel 33 that engages the pusher element rack 29 is arranged is.
  • This coupling of the sliding element 11 to the signaling switch 3 causes linear displacements of the sliding element 11 to rotate the signaling switch shaft 31.
  • the eccentric 7 has an eccentric nose 35 which, when the transmission shaft 5 rotates about the longitudinal axis 19 , moves on a circular eccentric path which runs about the longitudinal axis 19 in a plane orthogonal to the longitudinal axis 19 .
  • the carriage 13 is guided on two guide rails 37 and can be linearly displaced on the guide rails 37 orthogonally to the longitudinal axis 19 .
  • the carriage 13 is displaced simultaneously with the pusher element 11 by the eccentric nose 35 .
  • the carriage 13 has a carriage recess 39 which is delimited by a recess edge 41 on which the Eccentric nose 35 is applied when the pusher 11 is moved.
  • the carriage recess 39 has a recess opening 43, through which the eccentric lug 35 moves out of the carriage recess 39 when the sliding block 27 is moved from the middle region 25 of the slideway 21 into one of the end regions 22, 23, and through which the eccentric lug 35 moves into the carriage recess 39 moves in when the sliding block 27 is moved from one of the end regions 22, 23 of the sliding link gear 21 into the middle region 25.
  • the carriage recess 39 is designed in such a way that the eccentric lug 35, after moving into the carriage recess 39, contacts the recess edge 41 when the sliding block 27 enters the middle region 25 of the link passage 21 from one of the end areas 22, 23, moves the carriage 13 when the The sliding block 27 then passes through the middle region 25 to the other end region 22, 23 and is decoupled from the recess edge 41 when the sliding block 27 reaches the other end region 22, 23.
  • the sliding block 27 is located in the first end area 22. If the connecting link 9 is rotated counterclockwise from the position shown (according to the perspective shown), the eccentric lug 35 first moves towards the recess opening 43 and then through the recess opening 43 is moved through out of the carriage recess 39 . When the sliding block 27 reaches the central region 25 of the link passage 21, the eccentric nose 35 moves back into the carriage recess 39, contacts the recess edge 41 and displaces the carriage 13 as long as the pushing element 11 is moved. When the sliding block 27 finally reaches the second end area 23, the eccentric lug 35 decouples from the recess edge 41, so that the carriage 13 is no longer displaced. Correspondingly, the carriage 13 is shifted in the other direction when the sliding block 27 runs through the central area 25 starting from the second end area 23 to the first end area 22 of the link path 21 .
  • the movements of the carriage 13 are transmitted to the output shaft 17 .
  • the carriage 13 has a carriage rack 45 which runs orthogonally to the longitudinal axis 19 and parallel to a displacement direction of the carriage 13 .
  • An output shaft gear wheel 47 arranged on the output shaft 17 engages in the carriage rack 45 so that linear movements of the carriage 13 cause rotations of the output shaft 17 .
  • the output shaft 17 is coupled to the switching contact in such a way that rotations of the output shaft 17 in a first direction of rotation open the switching contact and rotations of the output shaft 17 in a second direction of rotation opposite the first direction of rotation close the switching contact, so that each of the two end positions of the carriage 13 corresponds to a switching state of the switch contact.
  • the gear arrangement 1 enables synchronized displacements of the carriage 13 and the pusher element 11, which cause synchronized rotations of the output shaft 17 and the signaling switch shaft 31, so that the two end positions of the signaling switch shaft 31 that correspond to an end position of the carriage 13 signal the switching state of the switching contact.
  • the signaling switch 3 has electrical components, not shown in detail, which are arranged in several switching levels arranged one behind the other along the signaling switch shaft 31 and to which the switching state of the switching contact is transmitted by the position of the signaling switch shaft 31 .
  • the electrical components can be contacted via terminal lugs 49 of the signaling switch 3, which are brought out of a housing of the signaling switch 3.
  • a signal can be output to a field control device by connection lugs 49, which switches a motor voltage of the motor so that the motor is switched off when the carriage 13 has reached an end position.
  • the motor can then run out without causing further movements of the carriage 13 and the pusher element 11, since the eccentric nose 35 is then decoupled from the recess edge 41 and the sliding block 27 has reached an end region 22, 23.
  • the connecting link 9 and the transmission shaft 5 can be rigidly connected to one another in two different relative positions, with one side of the connecting link 9 facing a different end of the transmission shaft 5 in a first relative position than in the second relative position.
  • the thrust element 11 is in the same position in both relative positions of the link 9 and the transmission shaft 5 when the link block 27 strikes the same end of the link passage 21 .
  • the figure shows a first relative position, in which a side of link 9 that is not visible in the figure faces transmission spur gear 15 . In the second relative position, this side of the connecting link 9 faces away from the transmission spur gear 15, that is to say the connecting link 9 is turned relative to the transmission shaft 5 in relation to the first relative position.
  • the central area 25 of the link gear 21 runs in the second relative position below the transmission shaft 5 when the sliding block 27 is in the link gear 21 at the position shown in the figure.

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Description

Die Erfindung betrifft eine Getriebeanordnung zum synchronisierten Antreiben eines elektrischen Schaltkontaktes und eines Meldeschalters.The invention relates to a gear arrangement for the synchronized driving of an electrical switching contact and a signaling switch.

Elektrische Schaltkontakte, beispielsweise von Trennschaltern, Erdungsschaltern und Leistungsschaltern in Schaltanlagen, werden häufig durch Motoren angetrieben, mittels derer Schaltelemente zum Öffnen und Schließen der Schaltkontakte bewegt werden. Der Schaltzustand eines derartigen Schaltkontaktes muss zu jedem Zeitpunkt eindeutig signalisiert werden.Electrical switching contacts, for example of isolating switches, grounding switches and circuit breakers in switchgear, are often driven by motors, by means of which switching elements are moved to open and close the switching contacts. The switching status of such a switching contact must be clearly signaled at all times.

Der Patentschrift DE 102 05 334 C1 ist eine elektrische Schaltanordnung mit einem ersten Schaltkontakt und einem zweiten Schaltkontakt entnehmbar. Die beiden Schaltkontakte sind jeweils linear verschieblich angeordnet, wobei eine Bewegung auf die beiden Schaltkontakte über eine drehbewegliche Kulisse eingekoppelt wird. Der Offenlegungsschrift DE 10 2013 213 303 A1 ist ein elektrischer Schalter entnehmbar. An dem elektrischen Schalter wird eine Drehbewegung in eine oszillierende Bewegung einer Schalterkomponente gewandelt. Dazu ist an einer Motorwelle ein Schwenkarm angeordnet, welcher über eine Kontaktrolle einen Schlitten treibt. DE 10 2006 031 220 A1 offenbart eine Getriebeanordnung zum Antrieb zumindest eines elektrischen Schaltkontaktes. Die Getriebeanordnung weist eine mit einem Kulissenabtastelement in Verbindung stehende, relativ zu dem Kulissenabtastelement bewegbare Kulissenanordnung mit einem Kulissengang auf. Die Kulissenanordnung weist zumindest ein erstes und ein zweites Teilelement auf, welche jeweils abschnittsweise den von dem Kulissenabtastelement abgreifbaren Kulissengang festlegen.The patent specification DE 102 05 334 C1 an electrical switching arrangement with a first switching contact and a second switching contact can be removed. The two switching contacts are each arranged to be linearly displaceable, with a movement being coupled to the two switching contacts via a rotatable connecting link. The disclosure document DE 10 2013 213 303 A1 an electrical switch can be removed. On the electrical switch, a rotary movement is converted into an oscillating movement of a switch component. For this purpose, a swivel arm is arranged on a motor shaft, which drives a carriage via a contact roller. DE 10 2006 031 220 A1 discloses a gear arrangement for driving at least one electrical switching contact. The transmission arrangement has a link arrangement which is connected to a link scanning element and can be moved relative to the link scanning element and has a link gear. The link arrangement has at least a first and a second sub-element, which in each case partially define the link path that can be picked up by the link scanning element.

Der Erfindung liegt die Aufgabe zugrunde, den Antrieb und die Signalisierung des Schaltzustandes eines elektrischen Schaltkontaktes zu verbessern.The object of the invention is to improve the drive and the signaling of the switching state of an electrical switching contact.

Die Aufgabe wird erfindungsgemäß durch eine Getriebeanordnung mit den Merkmalen des Anspruchs 1 gelöst.The object is achieved according to the invention by a transmission arrangement with the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.Advantageous configurations of the invention are the subject matter of the dependent claims.

Eine erfindungsgemäße Getriebeanordnung zum synchronisierten Antreiben eines elektrischen Schaltkontaktes und eines Meldeschalters umfasst eine Übertragungswelle, eine Kulisse, ein an den Meldeschalter koppelbares Schubelement, einen Exzenter und einen an den Schaltkontakt koppelbaren Schlitten. Die Übertragungswelle ist durch einen Motor um eine Längsachse der Übertragungswelle drehbar. Die Kulisse ist starr mit der Übertragungswelle verbunden und weist einen Kulissengang mit zwei Endbereichen und einem zwischen den Endbereichen verlaufenden Mittelbereich auf. Das Schubelement ist linear verschiebbar. An dem Schubelement ist ein durch den Kulissengang geführter Kulissenstein angeordnet. Der Exzenter ist starr mit der Übertragungswelle verbunden und weist eine Exzenternase auf, durch die der Schlitten zwischen zwei Endstellungen linear verschiebbar ist. Der Kulissengang und die Kopplung der Exzenternase an den Schlitten sind derart ausgebildet, dass eine Drehung der Übertragungswelle Verschiebungen des Schubelements und des Schlittens bewirkt, wenn der Kulissenstein eine Position in dem Mittelbereich des Kulissengangs aufweist, und keine Verschiebungen des Schubelements und des Schlittens bewirkt, wenn der Kulissenstein eine Position in einem Endbereich des Kulissengangs aufweist.A transmission arrangement according to the invention for the synchronized driving of an electrical switching contact and a signaling switch comprises a transmission shaft, a connecting link, a thrust element that can be coupled to the signaling switch, an eccentric and a carriage that can be coupled to the switching contact. The transmission shaft is rotatable about a longitudinal axis of the transmission shaft by a motor. The gate is rigidly connected to the transmission shaft and has a link gear with two end areas and a central area running between the end areas. The sliding element can be moved linearly. A sliding block guided through the link passage is arranged on the thrust element. The eccentric is rigidly connected to the transmission shaft and has an eccentric nose through which the carriage can be linearly displaced between two end positions. The link gear and the coupling of the eccentric lug to the carriage are designed in such a way that rotation of the transmission shaft causes displacements of the pusher element and the carriage when the sliding block has a position in the middle region of the link gear, and causes no displacements of the pusher element and the carriage when the sliding block has a position in an end area of the link passage.

Die Getriebeanordnung ermöglicht synchronisierte Verschiebungen des Schlittens und des Schubelements. Da der Schlitten an den Schaltkontakt koppelbar ist und das Schubelement an den Meldeschalter koppelbar ist, kann dem Meldeschalter über das Schubelement der aktuelle Schaltzustand des Schaltkontaktes signalisiert werden. Der Schaltzustand kann von dem Meldeschalter beispielsweise an ein Feldsteuerleitgerät ausgegeben werden, das eine Motorspannung des Motors schaltet, so dass der Motor abgeschaltet werden kann, wenn der Schaltkontakt einen definierten Schaltzustand erreicht hat. Dies ermöglicht eine Motorsteuerung ohne zusätzliche Schütze direkt anhand des von dem Meldeschalter ausgegebenen Signals. Nach dem Abschalten des Motors kann der Motor auslaufen, ohne weitere Bewegungen des Schlittens und des Schubelements zu verursachen, da der Kulissenstein dann einen Endbereich erreicht hat, so dass ein Weiterdrehen der Übertragungswelle keine Verschiebungen des Schubelements und des Schlittens bewirkt. Der Motor läuft aus und wird allein durch seine Trägheit gestoppt, ohne eine mechanische oder elektrische Motorbremse zum Anhalten des Motors, ein aufwändiges Getriebe oder einen speziellen Freilauf für den Motor zu benötigen. Dies reduziert die Kosten der Getriebeanordnung gegenüber Getriebeanordnungen mit derartigen zusätzlichen Funktionen und vereinfacht und verkürzt die Montage der Getriebeanordnung, da keine Einstellarbeiten für das Absteuern des Motors erforderlich sind. Insbesondere wird kein Gleichstrommotor zum Bremsen des Motors benötigt, so dass die Getriebeanordnung auch allein mit einem Wechselstrommotor verwendet werden kann, wodurch die Getriebeanordnung vielseitig einsetzbar ist.The gear arrangement enables synchronized displacements of the carriage and the pusher element. Since the carriage can be coupled to the switching contact and the sliding element can be coupled to the signaling switch, the signaling switch can be informed of the current switching state of the switching contact via the sliding element be signalled. The switching status can be output by the signaling switch, for example, to a field control device that switches a motor voltage of the motor so that the motor can be switched off when the switching contact has reached a defined switching status. This enables motor control without additional contactors directly based on the signal output by the signaling switch. After the motor has been switched off, the motor can coast down without causing further movements of the carriage and the pushing element, since the sliding block has then reached an end area, so that further rotation of the transmission shaft does not cause any displacements of the pushing element and the carriage. The motor coasts down and is stopped by its inertia alone, without the need for a mechanical or electrical motor brake to stop the motor, a complex gearbox or a special freewheel for the motor. This reduces the costs of the gear arrangement compared to gear arrangements with such additional functions and simplifies and shortens the assembly of the gear arrangement, since no adjustment work is required for switching off the motor. In particular, no direct current motor is required to brake the motor, so that the gear arrangement can also be used alone with an alternating current motor, as a result of which the gear arrangement can be used in a variety of ways.

Bei einer Ausgestaltung der Erfindung verläuft jeder Endbereich des Kulissengangs entlang eines Kreisbahnabschnitts einer Kreisbahn um die Längsachse der Übertragungswelle. Dadurch wird in konstruktiv einfacher Weise ein Verschieben des Schubelements durch Drehungen der Übertragungswelle verhindert, wenn der Kulissenstein eine Position in einem Endbereich des Kulissengangs aufweist.In one embodiment of the invention, each end area of the link gear runs along a circular path section of a circular path around the longitudinal axis of the transmission shaft. This prevents the sliding element from being displaced by rotations of the transmission shaft in a structurally simple manner when the sliding block is in a position in an end region of the sliding link gear.

Bei einer weiteren Ausgestaltung der Erfindung weist das Schubelement eine Schubelementzahnstange zur Kopplung an den Meldeschalter auf. Dadurch kann das Schubelement über die Schubelementzahnstange insbesondere an einen Meldeschalter gekoppelt werden, der eine Meldeschalterwelle mit einem in die Schubelementzahnstange eingreifenden Meldeschalterzahnrad aufweist.In a further embodiment of the invention, the pusher element has a pusher element toothed rack for coupling to the signaling switch. As a result, the pusher element can be coupled via the pusher element toothed rack to a signaling switch in particular, which has a signaling switch shaft with an in the push element rack has engaging signaling switch gear.

Bei einer weiteren Ausgestaltung der Erfindung weist die Getriebeanordnung eine an den Schaltkontakt koppelbare Abtriebswelle, an der ein Abtriebswellenzahnrad angeordnet ist, und eine an dem Schlitten angeordnete Schlittenzahnstange, in die das Abtriebswellenzahnrad eingreift, auf. Dadurch können durch lineare Bewegungen des Schlittens Drehbewegungen der Abtriebswelle zum Öffnen und Schließen des Schaltkontakts bewirkt werden.In a further embodiment of the invention, the transmission arrangement has an output shaft which can be coupled to the switching contact and on which an output shaft gear wheel is arranged, and a carriage rack which is arranged on the carriage and with which the output shaft gear wheel engages. As a result, rotary movements of the output shaft for opening and closing the switching contact can be effected by linear movements of the carriage.

Bei einer weiteren Ausgestaltung der Erfindung weist die Getriebeanordnung ein starr mit der Übertragungswelle verbundenes Übertragungsstirnrad zur Kopplung der Übertragungswelle an den Motor auf. Dadurch kann die Übertragungswelle über das Übertragungsstirnrad von dem Motor angetrieben werden, beispielsweise mittels eines von dem Motor antreibbaren, mit dem Übertragungsstirnrad zusammenwirkenden Motorstirnrads.In a further embodiment of the invention, the transmission arrangement has a transmission spur gear rigidly connected to the transmission shaft for coupling the transmission shaft to the motor. As a result, the transmission shaft can be driven by the motor via the transmission spur gear, for example by means of a motor spur gear that can be driven by the motor and interacts with the transmission spur gear.

Bei einer weiteren Ausgestaltung der Erfindung weist der Schlitten eine Schlittenausnehmung auf, die von einem Ausnehmungsrand begrenzt wird, an dem die Exzenternase zum Verschieben des Schlittens anliegt und von dem die Exzenternase entkoppelt, wenn der Kulissenstein eine Position in einem Endbereich des Kulissengangs aufweist. Dadurch wird in konstruktiv einfacher Weise ein Verschieben des Schlittens durch Drehungen der Übertragungswelle verhindert, wenn der Kulissenstein eine Position in einem Endbereich des Kulissengangs aufweist.In a further embodiment of the invention, the carriage has a carriage recess which is delimited by a recess edge against which the eccentric lug rests for moving the carriage and from which the eccentric lug is decoupled when the sliding block is in a position in an end region of the link path. This prevents the carriage from being displaced by rotations of the transmission shaft in a structurally simple manner when the sliding block is in a position in an end region of the sliding link gear.

Bei einer weiteren Ausgestaltung der Erfindung sind die Kulisse und die Übertragungswelle in zwei voneinander verschiedenen Relativstellungen starr miteinander verbindbar, wobei eine Seite der Kulisse in einer ersten Relativstellung einem anderen Ende der Übertragungswelle zugewandt ist als in der zweiten Relativstellung. Mit anderen Worten kann die Getriebeanordnung umgebaut werden, wobei die Kulisse relativ zu der Übertragungswelle gewendet wird. Diese Ausgestaltung der Erfindung ermöglicht, dass eine Drehrichtung, in der die Übertragungswelle gedreht werden muss, um das Schubelement in einer definierten Richtung zu verschieben, geändert werden kann, indem die Kulisse relativ zu der Übertragungswelle gewendet wird. Dadurch kann die Getriebeanordnung vorteilhaft einer von der Ausführung des Meldeschalters abhängigen Verschiebungsrichtung angepasst werden, in die das Schubelement verschoben werden muss, um den Meldeschalter beispielsweise von einem Einschaltzustand in einen Ausschaltzustand zu versetzen. Weiter kann eine Umkehr des Richtungssinns der Bewegung der Übertragungswelle bzw. des Schlittens bzw. der Abtriebswelle vorgesehen sein. In diesem Falle kann unter Beibehaltung des Meldeschalters über dessen Ansteuerung die Zuordnung seiner Schaltzeitpunkte relativ zu der Übertragungswelle bzw. dem Schlitten bzw. der Abtriebswelle angepasst werden. Vorzugsweise befindet sich das Schubelement in beiden Relativstellungen der Kulisse und der Übertragungswelle an derselben Position, wenn der Kulissenstein an demselben Ende des Kulissengangs anschlägt. Dadurch wird erreicht, dass das Schubelement in beiden Relativstellungen der Kulisse und der Übertragungswelle in derselben Weise verschoben werden kann, wobei sich zum Verschieben des Schubelements in eine definierte Richtung lediglich die Drehrichtung der Übertragungswelle in den beiden Relativstellungen voneinander unterscheidet.In a further embodiment of the invention, the gate and the transmission shaft can be rigidly connected to one another in two different relative positions, with one side of the gate facing a different end of the transmission shaft in a first relative position than in the second relative position. In other words, the gear assembly can be rebuilt, with the backdrop relative to the Transmission shaft is turned. This refinement of the invention makes it possible for a direction of rotation, in which the transmission shaft must be rotated in order to displace the thrust element in a defined direction, to be changed by the connecting link being turned relative to the transmission shaft. As a result, the gear arrangement can advantageously be adapted to a displacement direction which is dependent on the design of the signaling switch and in which the sliding element must be displaced in order to move the signaling switch from an on state to an off state, for example. Furthermore, a reversal of the sense of direction of the movement of the transmission shaft or of the carriage or of the output shaft can be provided. In this case, the assignment of its switching times relative to the transmission shaft or the carriage or the output shaft can be adjusted while retaining the signaling switch by controlling it. The pusher element is preferably in the same position in both relative positions of the connecting link and the transmission shaft when the sliding block strikes the same end of the link path. This means that the thrust element can be displaced in the same way in both relative positions of the connecting link and the transmission shaft, with only the direction of rotation of the transmission shaft differing in the two relative positions for displacing the thrust element in a defined direction.

Eine erfindungsgemäße Schaltvorrichtung weist einen elektrischen Schaltkontakt, einen Motor, einen Meldeschalter und eine erfindungsgemäße Getriebeanordnung auf, wobei die Übertragungswelle der Getriebeanordnung durch den Motor um die Längsachse der Übertragungswelle drehbar ist, der Schlitten der Getriebeanordnung an den Schaltkontakt gekoppelt ist und das Schubelement der Getriebeanordnung an den Meldeschalter gekoppelt ist. Die Vorteile einer derartigen Schaltvorrichtung ergeben sich aus den oben bereits genannten Vorteilen einer erfindungsgemäßen Getriebeanordnung und werden hier deshalb nicht noch einmal wiederholt.A switching device according to the invention has an electrical switching contact, a motor, a signaling switch and a gear arrangement according to the invention, the transmission shaft of the gear arrangement being rotatable by the motor about the longitudinal axis of the transmission shaft, the carriage of the gear arrangement being coupled to the switching contact and the pushing element of the gear arrangement being connected is linked to the signaling switch. The advantages of such a switching device result from the advantages of a transmission arrangement according to the invention, which have already been mentioned above, and are therefore not repeated here again.

Bei einer Ausgestaltung der Schaltvorrichtung weist das Schubelement der Getriebeanordnung eine Schubelementzahnstange auf und der Meldeschalter weist eine Meldeschalterwelle auf, an der ein in die Schubelementzahnstange eingreifendes Meldeschalterzahnrad angeordnet ist. Der Kulissengang der Getriebeanordnung kann derart gestaltet sein, dass der Betrag eines Drehwinkels einer Drehung der Übertragungswelle, bei der der Kulissenstein den Mittelbereich des Kulissengangs durchquert, mit dem Betrag eines Drehwinkels übereinstimmt, um den die Meldeschalterwelle bei dieser Drehung der Übertragungswelle gedreht wird. Alternativ kann der Kulissengang der Getriebeanordnung derart gestaltet sein, dass der Betrag eines Drehwinkels einer Drehung der Übertragungswelle, bei der der Kulissenstein den Mittelbereich des Kulissengangs durchquert, von dem Betrag eines Drehwinkels abweicht, um den die Meldeschalterwelle bei dieser Drehung der Übertragungswelle gedreht wird.In one embodiment of the switching device, the thrust element of the gear arrangement has a thrust element rack and the signaling switch has a signaling switch shaft on which a signaling switch gear wheel that engages in the thrust element rack is arranged. The link gear of the gear arrangement can be designed in such a way that the amount of a rotation angle of a rotation of the transmission shaft, in which the sliding block crosses the central area of the link gear, corresponds to the amount of a rotation angle by which the signaling switch shaft is rotated during this rotation of the transmission shaft. Alternatively, the link gear of the gear arrangement can be designed in such a way that the amount of a rotation angle of a rotation of the transmission shaft, in which the sliding block crosses the middle area of the link gear, differs from the amount of a rotation angle by which the signaling switch shaft is rotated during this rotation of the transmission shaft.

Bei einer weiteren Ausgestaltung der Schaltvorrichtung weist die Getriebeanordnung eine an den Schaltkontakt gekoppelte Abtriebswelle auf, an der ein Abtriebswellenzahnrad angeordnet ist, und an dem Schlitten der Getriebeanordnung ist eine Schlittenzahnstange angeordnet, in die das Abtriebswellenzahnrad eingreift.In a further embodiment of the switching device, the transmission arrangement has an output shaft coupled to the switching contact, on which an output shaft gear wheel is arranged, and on the carriage of the transmission arrangement a carriage rack is arranged, in which the output shaft gear wheel engages.

Bei einer weiteren Ausgestaltung der Schaltvorrichtung ist an der Übertragungswelle ein Übertragungsstirnrad angeordnet und der Motor ist über das Übertragungsstirnrad und ein von dem Motor antreibbares, mit dem Übertragungsstirnrad zusammenwirkendes Motorstirnrad an die Übertragungswelle gekoppelt.In a further embodiment of the switching device, a spur gear is arranged on the transmission shaft and the motor is coupled to the transmission shaft via the spur gear and a spur motor which can be driven by the motor and interacts with the spur gear.

Die vorgenannten Ausgestaltungen der Schaltvorrichtung entsprechen oben genannten Ausgestaltungen einer erfindungsgemäßen Getriebeanordnung, deren Vorteile ebenfalls oben bereits genannt wurden.The aforementioned configurations of the switching device correspond to the above-mentioned configurations of a transmission arrangement according to the invention, the advantages of which have likewise already been mentioned above.

Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung eines Ausführungsbeispiels, das im Zusammenhang mit der Zeichnung näher erläutert wird.The characteristics, features and advantages of this invention described above, and the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of an exemplary embodiment, which will be explained in more detail in connection with the drawing.

Dabei zeigt die einzige Figur eine perspektivische Darstellung einer Getriebeanordnung 1 zum synchronisierten Antreiben eines nicht dargestellten elektrischen Schaltkontaktes und eines Meldeschalters 3.The only figure shows a perspective representation of a gear arrangement 1 for the synchronized driving of an electrical switching contact (not shown) and a signaling switch 3.

Die Getriebeanordnung 1 umfasst eine Übertragungswelle 5, einen Exzenter 7, eine Kulisse 9, ein Schubelement 11, einen Schlitten 13, ein Übertragungsstirnrad 15 und eine Abtriebswelle 17.The transmission arrangement 1 comprises a transmission shaft 5, an eccentric 7, a connecting link 9, a thrust element 11, a carriage 13, a transmission spur gear 15 and an output shaft 17.

Der Exzenter 7, die Kulisse 9 und das Übertragungsstirnrad 15 sind starr mit der Übertragungswelle 5 verbunden.The eccentric 7, the setting 9 and the transmission spur gear 15 are rigidly connected to the transmission shaft 5.

Die Übertragungswelle 5 ist durch einen Motor über das Übertragungsstirnrad 15 und ein von dem Motor antreibbares, mit dem Übertragungsstirnrad 15 zusammenwirkendes Motorstirnrad um eine Längsachse 19 der Übertragungswelle 5 drehbar. Der Motor und das Motorstirnrad sind in der Figur nicht dargestellt.The transmission shaft 5 can be rotated about a longitudinal axis 19 of the transmission shaft 5 by a motor via the transmission spur gear 15 and a motor spur gear that can be driven by the motor and interacts with the transmission spur gear 15 . The motor and the motor spur gear are not shown in the figure.

Die Kulisse 9 weist einen Kulissengang 21 mit zwei Endbereichen 22, 23 und einem zwischen den Endbereichen 22, 23 verlaufenden Mittelbereich 25 auf. Jeder Endbereich 22, 23 verläuft entlang eines Kreisbahnabschnitts einer Kreisbahn um die Längsachse 19 der Übertragungswelle 5, wobei die beiden Kreisbahnen in einer zur Längsachse 19 orthogonalen Ebene verlaufen und die Kreisbahn eines ersten Endbereichs 22 einen kleineren Abstand von der Längsachse 19 als die Kreisbahn des zweiten Endbereichs 23 aufweist.The gate 9 has a link gear 21 with two end areas 22, 23 and a central area 25 running between the end areas 22, 23. Each end region 22, 23 runs along a circular path section of a circular path around the longitudinal axis 19 of the transmission shaft 5, the two circular paths running in a plane orthogonal to the longitudinal axis 19 and the circular path of a first end region 22 at a smaller distance from the longitudinal axis 19 than the circular path of the second End portion 23 has.

An dem Schubelement 11 ist ein Kulissenstein 27 angeordnet, der durch den Kulissengang 21 geführt wird. Wenn der Kulissenstein 27 eine Position in dem Mittelbereich 25 des Kulissengangs 21 aufweist, wird das Schubelement 11 bei einer Drehung der Übertragungswelle 5 um die Längsachse 19 orthogonal zur Längsachse 19 linear verschoben, wobei die Richtung dieser Verschiebung von der Drehrichtung der Übertragungswelle 5 abhängt. Aufgrund der Verläufe der Endbereiche 22, 23 des Kulissengangs 21 entlang Kreisbahnabschnitten von Kreisbahnen um die Längsachse 19 bewirkt eine Drehung der Übertragungswelle 5 um die Längsachse 19 keine Änderung der Position des Kulissensteins 27 und daher auch keine Verschiebung des Schubelements 11, wenn der Kulissenstein 27 eine Position in einem der beiden Endbereiche 22, 23 des Kulissengangs 21 aufweist.A sliding block 27 , which is guided through the link passage 21 , is arranged on the sliding element 11 . When the sliding block 27 is in a position in the central region 25 of the link gear 21, the thrust element 11 is linearly displaced when the transmission shaft 5 rotates about the longitudinal axis 19, orthogonally to the longitudinal axis 19, with the direction of this displacement depending on the direction of rotation of the transmission shaft 5. Due to the course of the end regions 22, 23 of the slideway 21 along circular path sections of circular paths about the longitudinal axis 19, a rotation of the transmission shaft 5 about the longitudinal axis 19 does not change the position of the sliding block 27 and therefore also does not cause any displacement of the pushing element 11 when the sliding block 27 moves a Position in one of the two end regions 22, 23 of the link gear 21 has.

Das Schubelement 11 ist an den Meldeschalter 3 gekoppelt. Dazu weist das Schubelement 11 eine Schubelementzahnstange 29 auf, die orthogonal zur Längsachse 19 parallel zu einer Verschiebungsrichtung des Schubelements 11 verläuft, und der Meldeschalter 3 weist eine parallel zur Übertragungswelle 5 angeordnete Meldeschalterwelle 31 auf, an der ein in die Schubelementzahnstange 29 eingreifendes Meldeschalterzahnrad 33 angeordnet ist. Durch diese Kopplung des Schubelements 11 an den Meldeschalter 3 bewirken lineare Verschiebungen des Schubelements 11 Drehungen der Meldeschalterwelle 31.The sliding element 11 is coupled to the signaling switch 3 . For this purpose, the pusher element 11 has a pusher element rack 29, which runs orthogonally to the longitudinal axis 19 and parallel to a displacement direction of the pusher element 11, and the signaling switch 3 has a signaling switch shaft 31 that is arranged parallel to the transmission shaft 5 and on which a signaling switch gear wheel 33 that engages the pusher element rack 29 is arranged is. This coupling of the sliding element 11 to the signaling switch 3 causes linear displacements of the sliding element 11 to rotate the signaling switch shaft 31.

Der Exzenter 7 weist eine Exzenternase 35 auf, die sich bei Drehungen der Übertragungswelle 5 um die Längsachse 19 auf einer Exzenterkreisbahn bewegt, die in einer zur Längsachse 19 orthogonalen Ebene um die Längsachse 19 verläuft.The eccentric 7 has an eccentric nose 35 which, when the transmission shaft 5 rotates about the longitudinal axis 19 , moves on a circular eccentric path which runs about the longitudinal axis 19 in a plane orthogonal to the longitudinal axis 19 .

Der Schlitten 13 wird an zwei Führungsschienen 37 geführt und ist an den Führungsschienen 37 orthogonal zur Längsachse 19 linear verschiebbar. Der Schlitten 13 wird durch die Exzenternase 35 gleichzeitig mit dem Schubelement 11 verschoben. Dazu weist der Schlitten 13 eine Schlittenausnehmung 39 auf, die von einem Ausnehmungsrand 41 begrenzt wird, an dem die Exzenternase 35 anliegt, wenn das Schubelement 11 verschoben wird. Die Schlittenausnehmung 39 weist eine Ausnehmungsöffnung 43 auf, durch die die Exzenternase 35 aus der Schlittenausnehmung 39 herausfährt, wenn der Kulissenstein 27 von dem Mittelbereich 25 des Kulissengangs 21 in einen der Endbereiche 22, 23 bewegt wird, und durch die die Exzenternase 35 in die Schlittenausnehmung 39 hineinfährt, wenn der Kulissenstein 27 von einem der Endbereiche 22, 23 des Kulissengangs 21 in den Mittelbereich 25 bewegt wird. Die Schlittenausnehmung 39 ist derart gestaltet, dass die Exzenternase 35 nach dem Hineinfahren in die Schlittenausnehmung 39 den Ausnehmungsrand 41 kontaktiert, wenn der Kulissenstein 27 aus einem der Endbereiche 22, 23 in den Mittelbereich 25 des Kulissengangs 21 eintritt, den Schlitten 13 verschiebt, wenn der Kulissenstein 27 anschließend den Mittelbereich 25 zu dem anderen Endbereich 22, 23 durchläuft, und von dem Ausnehmungsrand 41 entkoppelt, wenn der Kulissenstein 27 den anderen Endbereich 22, 23 erreicht.The carriage 13 is guided on two guide rails 37 and can be linearly displaced on the guide rails 37 orthogonally to the longitudinal axis 19 . The carriage 13 is displaced simultaneously with the pusher element 11 by the eccentric nose 35 . For this purpose, the carriage 13 has a carriage recess 39 which is delimited by a recess edge 41 on which the Eccentric nose 35 is applied when the pusher 11 is moved. The carriage recess 39 has a recess opening 43, through which the eccentric lug 35 moves out of the carriage recess 39 when the sliding block 27 is moved from the middle region 25 of the slideway 21 into one of the end regions 22, 23, and through which the eccentric lug 35 moves into the carriage recess 39 moves in when the sliding block 27 is moved from one of the end regions 22, 23 of the sliding link gear 21 into the middle region 25. The carriage recess 39 is designed in such a way that the eccentric lug 35, after moving into the carriage recess 39, contacts the recess edge 41 when the sliding block 27 enters the middle region 25 of the link passage 21 from one of the end areas 22, 23, moves the carriage 13 when the The sliding block 27 then passes through the middle region 25 to the other end region 22, 23 and is decoupled from the recess edge 41 when the sliding block 27 reaches the other end region 22, 23.

In der Figur befindet sich der Kulissenstein 27 in dem ersten Endbereich 22. Wenn die Kulisse 9 von der dargestellten Position aus (gemäß der dargestellten Perspektive) entgegen dem Uhrzeigersinn gedreht wird, wird die Exzenternase 35 zunächst auf die Ausnehmungsöffnung 43 zu und anschließend durch die Ausnehmungsöffnung 43 hindurch aus der Schlittenausnehmung 39 heraus bewegt. Wenn der Kulissenstein 27 den Mittelbereich 25 des Kulissengangs 21 erreicht, fährt die Exzenternase 35 wieder in die Schlittenausnehmung 39 ein, kontaktiert den Ausnehmungsrand 41 und verschiebt den Schlitten 13, solange das Schubelement 11 bewegt wird. Wenn der Kulissenstein 27 schließlich den zweiten Endbereich 23 erreicht, entkoppelt die Exzenternase 35 von dem Ausnehmungsrand 41, so dass der Schlitten 13 nicht weiter verschoben wird. Entsprechend wird der Schlitten 13 in die andere Richtung verschoben, wenn der Kulissenstein 27 von dem zweiten Endbereich 23 ausgehend den Mittelbereich 25 zu dem ersten Endbereich 22 des Kulissengangs 21 durchläuft.In the figure, the sliding block 27 is located in the first end area 22. If the connecting link 9 is rotated counterclockwise from the position shown (according to the perspective shown), the eccentric lug 35 first moves towards the recess opening 43 and then through the recess opening 43 is moved through out of the carriage recess 39 . When the sliding block 27 reaches the central region 25 of the link passage 21, the eccentric nose 35 moves back into the carriage recess 39, contacts the recess edge 41 and displaces the carriage 13 as long as the pushing element 11 is moved. When the sliding block 27 finally reaches the second end area 23, the eccentric lug 35 decouples from the recess edge 41, so that the carriage 13 is no longer displaced. Correspondingly, the carriage 13 is shifted in the other direction when the sliding block 27 runs through the central area 25 starting from the second end area 23 to the first end area 22 of the link path 21 .

Die Bewegungen des Schlittens 13 werden auf die Abtriebswelle 17 übertragen. Dazu weist der Schlitten 13 eine Schlittenzahnstange 45 auf, die orthogonal zur Längsachse 19 parallel zu einer Verschiebungsrichtung des Schlittens 13 verläuft. In die Schlittenzahnstange 45 greift ein an der Abtriebswelle 17 angeordnetes Abtriebswellenzahnrad 47 ein, so dass lineare Bewegungen des Schlittens 13 Drehungen der Abtriebswelle 17 bewirken. Die Abtriebswelle 17 ist an den Schaltkontakt derart gekoppelt, dass Drehungen der Abtriebswelle 17 in einer ersten Drehrichtung den Schaltkontakt öffnen und Drehungen der Abtriebswelle 17 in einer der ersten Drehrichtung entgegen gesetzten zweiten Drehrichtung den Schaltkontakt schlie-βen, so dass jede der beiden Endstellungen des Schlittens 13 zu einem Schaltzustand des Schaltkontakts korrespondiert.The movements of the carriage 13 are transmitted to the output shaft 17 . For this purpose, the carriage 13 has a carriage rack 45 which runs orthogonally to the longitudinal axis 19 and parallel to a displacement direction of the carriage 13 . An output shaft gear wheel 47 arranged on the output shaft 17 engages in the carriage rack 45 so that linear movements of the carriage 13 cause rotations of the output shaft 17 . The output shaft 17 is coupled to the switching contact in such a way that rotations of the output shaft 17 in a first direction of rotation open the switching contact and rotations of the output shaft 17 in a second direction of rotation opposite the first direction of rotation close the switching contact, so that each of the two end positions of the carriage 13 corresponds to a switching state of the switch contact.

Die Getriebeanordnung 1 ermöglicht synchronisierte Verschiebungen des Schlittens 13 und des Schubelements 11, die synchronisierte Drehungen der Abtriebswelle 17 und der Meldeschalterwelle 31 bewirken, so dass die beiden jeweils zu einer Endstellung des Schlittens 13 korrespondierenden Endstellungen der Meldeschalterwelle 31 den Schaltzustand des Schaltkontakts signalisieren. Der Meldeschalter 3 weist nicht näher dargestellte elektrische Bauelemente auf, die in mehreren entlang der Meldeschalterwelle 31 hintereinander angeordneten Schaltebenen angeordnet sind und denen der Schaltzustand des Schaltkontakts durch die Stellung der Meldeschalterwelle 31 übermittelt wird. Die elektrischen Bauelemente sind über Anschlussfahnen 49 des Meldeschalters 3 kontaktierbar, die aus einem Gehäuse des Meldeschalters 3 herausgeführt sind. Beispielsweise kann durch Anschlussfahnen 49 ein Signal an ein Feldsteuerleitgerät ausgegeben werden, das eine Motorspannung des Motors schaltet, so dass der Motor abgeschaltet wird, wenn der Schlitten 13 eine Endstellung erreicht hat. Der Motor kann dann auslaufen, ohne weitere Bewegungen des Schlittens 13 und des Schubelements 11 zu verursachen, da die Exzenternase 35 dann von dem Ausnehmungsrand 41 entkoppelt ist und der Kulissenstein 27 einen Endbereich 22, 23 erreicht hat.The gear arrangement 1 enables synchronized displacements of the carriage 13 and the pusher element 11, which cause synchronized rotations of the output shaft 17 and the signaling switch shaft 31, so that the two end positions of the signaling switch shaft 31 that correspond to an end position of the carriage 13 signal the switching state of the switching contact. The signaling switch 3 has electrical components, not shown in detail, which are arranged in several switching levels arranged one behind the other along the signaling switch shaft 31 and to which the switching state of the switching contact is transmitted by the position of the signaling switch shaft 31 . The electrical components can be contacted via terminal lugs 49 of the signaling switch 3, which are brought out of a housing of the signaling switch 3. For example, a signal can be output to a field control device by connection lugs 49, which switches a motor voltage of the motor so that the motor is switched off when the carriage 13 has reached an end position. The motor can then run out without causing further movements of the carriage 13 and the pusher element 11, since the eccentric nose 35 is then decoupled from the recess edge 41 and the sliding block 27 has reached an end region 22, 23.

Die Kulisse 9 und die Übertragungswelle 5 sind in zwei voneinander verschiedenen Relativstellungen starr miteinander verbindbar, wobei eine Seite der Kulisse 9 in einer ersten Relativstellung einem anderen Ende der Übertragungswelle 5 zugewandt ist als in der zweiten Relativstellung. Dabei befindet sich das Schubelement 11 in beiden Relativstellungen der Kulisse 9 und der Übertragungswelle 5 an derselben Position, wenn der Kulissenstein 27 an demselben Ende des Kulissengangs 21 anschlägt. Die Figur zeigt eine erste Relativstellung, in der eine in der Figur nicht sichtbare Seite der Kulisse 9 dem Übertragungsstirnrad 15 zugewandt ist. In der zweiten Relativstellung ist diese Seite der Kulisse 9 von dem Übertragungsstirnrad 15 abgewandt, das heißt die Kulisse 9 ist gegenüber der ersten Relativstellung relativ zu der Übertragungswelle 5 gewendet. Ferner verläuft der Mittelbereich 25 des Kulissengangs 21 in der zweiten Relativstellung unterhalb der Übertragungswelle 5, wenn sich der Kulissenstein 27 an der in der Figur gezeigten Position in dem Kulissengang 21 befindet.The connecting link 9 and the transmission shaft 5 can be rigidly connected to one another in two different relative positions, with one side of the connecting link 9 facing a different end of the transmission shaft 5 in a first relative position than in the second relative position. The thrust element 11 is in the same position in both relative positions of the link 9 and the transmission shaft 5 when the link block 27 strikes the same end of the link passage 21 . The figure shows a first relative position, in which a side of link 9 that is not visible in the figure faces transmission spur gear 15 . In the second relative position, this side of the connecting link 9 faces away from the transmission spur gear 15, that is to say the connecting link 9 is turned relative to the transmission shaft 5 in relation to the first relative position. Furthermore, the central area 25 of the link gear 21 runs in the second relative position below the transmission shaft 5 when the sliding block 27 is in the link gear 21 at the position shown in the figure.

Obwohl die Erfindung im Detail durch bevorzugte Ausführungsbeispiele näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der angefügten Ansprüche zu verlassen.Although the invention has been illustrated and described in detail by means of preferred embodiments, the invention is not limited by the disclosed examples and other variations can be derived therefrom by those skilled in the art without departing from the scope of the appended claims.

Claims (14)

  1. Gear arrangement (1) for synchronously driving an electrical switching contact and a signalling switch (3), the gear arrangement (1) comprising
    - a transmission shaft (5) which is rotatable about a longitudinal axis (19) of the transmission shaft (5) by a motor,
    - a slotted link (9) which is rigidly connected to the transmission shaft (5) and has a slotted link path (21) which has two end regions (22, 23) and a central region (25) running between the end regions (22, 23),
    - a linearly displaceable thrust element (11) which is couplable to the signalling switch (3) and on which a sliding block (27) guided by the slotted link path (21) is arranged, characterized by
    - an eccentric (7) which is rigidly connected to the transmission shaft (5) and has an eccentric lug (35),
    - and a slide (13) which is couplable to the switching contact and is linearly displaceable between two end positions by the eccentric lug (35),
    - wherein the slotted link path (21) and the coupling of the eccentric lug (35) to the slide (13) are formed in such a way that rotation of the transmission shaft (5) causes displacement of the thrust element (11) and the slide (13) when the sliding block (27) is positioned in the central region (25) of the slotted link path (21) and does not cause displacement of the thrust element (11) and the slide (13) when the sliding block (27) is positioned in an end region (22, 23) of the slotted link path (21).
  2. Gear arrangement (1) according to Claim 1, wherein each end region (22, 23) of the slotted link path (21) runs along a circular path portion of a circular path around the longitudinal axis (19) of the transmission shaft (5).
  3. Gear arrangement (1) according to Claim 1 or 2, wherein the thrust element (11) has a thrust element toothed rack (29) for coupling to the signalling switch (3).
  4. Gear arrangement (1) according to one of the preceding claims comprising a output shaft (17) which is couplable to the switching contact and on which an output shaft gear wheel (47) is arranged, and comprising a slide toothed rack (45) which is arranged on the slide (13) and into which the output shaft gear wheel (47) engages.
  5. Gear arrangement (1) according to one of the preceding claims, having a transmission spur gear (15), which is rigidly connected to the transmission shaft (5), for coupling the transmission shaft (5) to the motor.
  6. Gear arrangement (1) according to one of the preceding claims, wherein the slide (13) has a slide recess (39) which is delimited by a recess edge (41) against which the eccentric lug (35) for displacing the slide (13) bears and from which the eccentric lug (35) is decoupled when the sliding block (27) is positioned in an end region (22, 23) of the slotted link path (21).
  7. Gear arrangement (1) according to one of the preceding claims, wherein the slotted link (9) and the transmission shaft (5) are rigidly connected to one another in two differing relative positions, wherein one side of the slotted link (9) faces a different end of the transmission shaft (5) in a first relative position than in the second relative position.
  8. Gear arrangement (1) according to Claim 7, wherein the thrust element (11) is located in the same position in both relative positions of the slotted link (9) and the transmission shaft (5) when the sliding block (27) stops against the same end of the slotted link path (21).
  9. Switching apparatus comprising an electrical switching contact, a motor, a signalling switch (3) and a gear arrangement (1) which is designed according to one of the preceding claims, wherein the transmission shaft (5) of the gear arrangement (1) is rotatable about the longitudinal axis (19) of the transmission shaft (5) by the motor, the slide (13) of the gear arrangement (1) is coupled to the switching contact and the thrust element (11) of the gear arrangement (1) is coupled to the signalling switch (3).
  10. Switching apparatus according to Claim 9, wherein the thrust element (11) of the gear arrangement (1) has a thrust element toothed rack (29) and the signalling switch (3) has an signalling switch shaft (31) on which a signalling switch gear wheel (33) which engages into the thrust element toothed rack (29) is arranged.
  11. Switching apparatus according to Claim 10, wherein the slotted link path (21) of the gear arrangement (1) is configured in such a way that the magnitude of a rotation angle of a rotation of the transmission shaft (5), in the case of which the sliding block (27) crosses the central region (25) of the slotted link path (21), corresponds to the magnitude of a rotation angle about which the signalling switch shaft (31) is rotated in the event of this rotation of the transmission shaft (5).
  12. Switching apparatus according to Claim 10, wherein the slotted link path (21) of the gear arrangement (1) is configured in such a way that the magnitude of a rotation angle of a rotation of the transmission shaft (5), in the case of which the sliding block (27) crosses the central region (25) of the slotted link path (21), differs from the magnitude of a rotation angle about which the signalling switch shaft (31) is rotated in the event of this rotation of the transmission shaft (5).
  13. Switching apparatus according to one of Claims 9 to 12, wherein the gear arrangement (1) has an output shaft (17) which is coupled to the switching contact and on which an output shaft gear wheel (47), and a slide toothed rack (45), into which the output shaft gear wheel (47) engages, is arranged on the slide (13) of the gear arrangement (1).
  14. Switching apparatus according to one of Claims 9 to 13, wherein a transmission spur gear (15) is arranged on the transmission shaft (5) and the motor is coupled to the transmission shaft (5) via the transmission spur gear (15) and a motor spur gear which can be driven by the motor and interacts with the transmission spur gear (15).
EP18830144.4A 2018-08-30 2018-12-07 Driving an electrical switching contact and an alarm switch Active EP3815120B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018214764.7A DE102018214764A1 (en) 2018-08-30 2018-08-30 Driving an electrical switch contact and a signaling switch
PCT/EP2018/084011 WO2020043322A1 (en) 2018-08-30 2018-12-07 Driving an electrical switch contact and a signalling switch

Publications (2)

Publication Number Publication Date
EP3815120A1 EP3815120A1 (en) 2021-05-05
EP3815120B1 true EP3815120B1 (en) 2022-06-22

Family

ID=64959272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18830144.4A Active EP3815120B1 (en) 2018-08-30 2018-12-07 Driving an electrical switching contact and an alarm switch

Country Status (3)

Country Link
EP (1) EP3815120B1 (en)
DE (1) DE102018214764A1 (en)
WO (1) WO2020043322A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126779A (en) * 1966-08-01 1968-09-11 Ass Elect Ind A switching arrangement employing vacuum switches
DE2136213A1 (en) * 1971-07-20 1973-02-08 Transformatoren Union Ag GEARBOX FOR TAP SWITCHES OF TAPPING TRANSFORMERS
DE10205334C1 (en) * 2002-02-06 2003-11-13 Siemens Ag Electrical switching arrangement with a first switching contact and with a second switching contact
DE10326715B3 (en) * 2003-06-06 2004-12-16 Siemens Ag Adjustment device for adjusting a movable contact of a switching device
DE102006031220A1 (en) * 2006-06-30 2008-01-03 Siemens Ag Gear arrangement for driving an electrical switching contact
DE102013213303A1 (en) * 2013-07-08 2015-01-08 Siemens Aktiengesellschaft Electric switch with conversion of a rotary motion into an oscillating movement of a switch component
DE102013224953A1 (en) * 2013-12-05 2015-06-11 Siemens Aktiengesellschaft Switchgear drive device

Also Published As

Publication number Publication date
WO2020043322A1 (en) 2020-03-05
DE102018214764A1 (en) 2020-03-05
EP3815120A1 (en) 2021-05-05

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