EP2535912A1 - Manual drive - Google Patents
Manual drive Download PDFInfo
- Publication number
- EP2535912A1 EP2535912A1 EP12163083A EP12163083A EP2535912A1 EP 2535912 A1 EP2535912 A1 EP 2535912A1 EP 12163083 A EP12163083 A EP 12163083A EP 12163083 A EP12163083 A EP 12163083A EP 2535912 A1 EP2535912 A1 EP 2535912A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- drive shaft
- drive
- rotational movement
- ratchet wheel
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
Definitions
- the present invention relates to a manual drive for the step-wise powerless operation of a diverter to a tapped transformer.
- a manual drive is known in which a hand crank of the drive shaft is removable and externally attachable to the housing with a spring clip.
- the drive is unlocked by turning a key.
- a locking lever is lifted from a locking disc and a cam wheel; the drive shaft is released and can be turned.
- Through a reduction gear shaft leading to the diverter is always rotated with one revolution per circuit, regardless of how many revolutions the circuit on the hand crank itself are required.
- the mentioned locking lever is locked in a recess of the locking disc and in the cam wheel by a tension spring, so that the drive is blocked.
- an electric cam switch is switched. By a forced latching, a new circuit can be made only after turning the key again.
- a diverter circuit ie a rotation of the Isolierschaltwelle by a certain angle to each adjacent fixed contact, thus corresponds to a specific, type-dependent number of revolutions of the driving shaft by means of the manual drive.
- the handwheel or the hand crank how many turns to move to complete switching between two adjacent fixed contacts in a defined switching direction, so for example from the winding tapping n on the Winding tap n + 1, to complete. Under certain circumstances, this can lead to unwanted indifferent switching positions between two adjacent fixed contacts, ie to incomplete switching operations, also because the handwheel or the hand crank is not forcibly guided in one direction during a switching operation, but allows a change of direction of rotation.
- Object of the present invention is therefore to provide a manual drive of the type mentioned, which does not identify the known from the prior art disadvantages and allows the user in particular a safe and very simple operation.
- the general inventive idea is to make the introduced on the drive shaft of the manual drive rotary motion by means of a preferably tubular lever which is in operative connection with a locking mechanism, which in turn ensures that the lever moves during the switching operation in only one defined desired direction can be so that no indifferent switching positions or impermissible switching direction changes can occur.
- the coupling between the drive shaft and the lever for it by means of a ratchet device, so that ultimately introduced via the lever to the drive shaft rotational movement can happen only in the same defined desired direction in which the lever is forcibly guided.
- FIG. 1 are the essential to the invention components of a manual drive 1 shown in a side sectional view.
- a representation of known to those skilled in the prior art components has been omitted for clarity.
- the here in FIG. 1 illustrated hand drive 1 may be provided on the partially shown side wall 2 of a transformer, not shown.
- the orientationsabgriff of the output shaft of the manual drive 1 for example, via a likewise not shown, because of the state of the art for the skilled worker sufficiently well-known, linkage done either is guided over a provided at the top of the transformer housing cover or provided in the side wall passage to the diverter.
- the essential components of the manual drive 1 are a manual transmission 3 with a drive shaft 4 and an output shaft, not shown, wherein the initiation of a rotational movement on the drive shaft 4 of the manual drive 1 according to the invention takes place via a preferably tubular-shaped lever 5.
- the geometric configuration of the lever 5 can be seen in the context of the present application within wide limits. It is essential only that the lever 5 is designed such that a moment on the drive shaft 4 can be transmitted without great effort.
- this is formed, for example, as a reversing gear in which can be selected via a switch 6, whether to switch to the next higher or lower winding tap the control winding of the transformer by means of the operable with the manual drive 1 Umstellers.
- the changeover switch 6 thus switches back and forth between the forward and reverse running in the manual transmission 3, which is designed, for example, as a reversing transmission, using known technical means.
- the operative connection between the drive shaft 4 and the lever 5 via a ratchet mechanism 7, which only transmits an introduced via the lever 5 torque to the drive shaft 4, if the same, from his in FIG. 1 shown stationary position, down is moved.
- a micro switch 8 is arranged, which may be formed as an opener or closer and which is also connected to the circuit breaker of the transformer.
- the microswitch 8 generates during the operation of the lever 5 of the manual drive 1, an electrical signal that can be used to shut down the transformer, since the diverter, as explained in the introduction, may only be operated when the transformer is switched off. Also standing on the ratchet mechanism 7 in operative connection with the drive shaft 4, a locking mechanism 9 is provided on the lever 5. On the operation of the locking mechanism 9 is in the description too FIG. 2 discussed in more detail.
- the locking mechanism 9 has a locking wheel 10 in operative connection with the lever 5 with a trigger 11. Furthermore, a first and second pawl 12 and 13 are provided, which are arranged rotatably mounted on a respective receptacle 14 and 15 by means of a corresponding pin 16 and 17. At the two pawls 12 and 13, a connecting piece 18 is also mechanically connected by means of pins 19 and 20.
- the ratchet wheel 10 connected thereto forcibly rotates. Due to the geometric shape of the ratchet wheel 10 and the hook-shaped end of the first pawl 12, stepwise meshing engagement in the direction of the arrow 5 is possible. If, on the other hand, an unintentional rotational movement takes place counter to the direction of the arrow, the forced blocking achieved via geometric positive locking acts.
- the trigger 11 provided on the ratchet wheel 10 reaches the area of the first pawl 12 and pushes it upward when the 180 degree movement of the lever 5 is swept over.
Landscapes
- Lock And Its Accessories (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen Handantrieb zur schrittweisen leistungslosen Betätigung eines Umstellers an einem Stufentransformator.The present invention relates to a manual drive for the step-wise powerless operation of a diverter to a tapped transformer.
Aus der Firmendruckschrift der Anmelderin "
Aus der
Alternativ ist es aus dem Stand der Technik ebenfalls bekannt, statt einer Handkurbel ein Handrad für den manuellen Betrieb eines Umstellers vorzusehen, wie beispielsweise in der
Aufgabe der vorliegenden Erfindung ist es demnach, einen Handantrieb der eingangs genannten Art anzugeben, der die aus dem Stand der Technik bekannten Nachteile nicht ausweist und dem Benutzer dabei insbesondere eine sichere und besonders einfache Bedienung ermöglicht.Object of the present invention is therefore to provide a manual drive of the type mentioned, which does not identify the known from the prior art disadvantages and allows the user in particular a safe and very simple operation.
Diese Aufgabe wird durch einen Handantrieb mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche betreffen dabei besonders vorteilhafte Weiterbildungen der Erfindung.This object is achieved by a manual drive with the features of the first claim. The subclaims relate to particularly advantageous developments of the invention.
Die allgemeine erfinderische Idee besteht dabei darin, die auf die Antriebswelle des Handantriebes eingeleitete Drehbewegung mittels eines vorzugsweise rohrförmig ausgebildeten Hebels vorzunehmen, der mit einem Sperrmechanismus in Wirkverbindung steht, der seinerseits wiederum sicherstellt, dass der Hebel während des Umschaltvorganges in nur eine definiert gewünschte Richtung bewegt werden kann, so dass keine indifferenten Schaltstellungen oder unzulässige Schaltrichtungsänderungen entstehen können. Nach einem weiteren Merkmal der Erfindung erfolgt die Kopplung zwischen der Antriebswelle und dem Hebel dafür mittels einer Ratschenvorrichtung, so dass letzten Endes die über den Hebel auf die Antriebswelle eingeleitete Drehbewegung nur in der selben definiert gewünschten Richtung passieren kann, in die der Hebel zwangsgeführt wird.The general inventive idea is to make the introduced on the drive shaft of the manual drive rotary motion by means of a preferably tubular lever which is in operative connection with a locking mechanism, which in turn ensures that the lever moves during the switching operation in only one defined desired direction can be so that no indifferent switching positions or impermissible switching direction changes can occur. According to a further feature of the invention, the coupling between the drive shaft and the lever for it by means of a ratchet device, so that ultimately introduced via the lever to the drive shaft rotational movement can happen only in the same defined desired direction in which the lever is forcibly guided.
Die Erfindung soll nachfolgend an Hand von Zeichnungen beispielhaft noch näher erläutert werden.The invention will be explained in more detail by way of example with reference to drawings.
Es zeigen:
- Figur 1
- den erfindungswesentlichen Teil eines Handantriebes in einer seitlichen Darstellung
- Figur 2
- einen Ausschnitt eines erfindungsgemäßen Handantriebes in einer seitlichen Darstellung.
- FIG. 1
- the invention essential part of a manual drive in a side view
- FIG. 2
- a section of a hand drive according to the invention in a lateral view.
In
In
Wird nun der Hebel 5 in Pfeilrichtung nach unten bewegt, so dreht sich dadurch zwangsweise das mit ihm verbundene Sperrrad 10. Durch die geometrische Form des Sperrrades 10 und des hakenförmiges Endes der ersten Sperrklinke 12, ist ein schrittweiser Verzahnungseingriff in Pfeilrichtung des Hebels 5 möglich. Erfolgt hingegen eine ungewollte Drehbewegung entgegen der Pfeilrichtung, wirkt die über geometrischen Formschluss erreichte Zwangssperrung. Wird der Hebel 5 um annähernd 180 Grad nach unten bewegt, so erreicht der an dem Sperrrad 10 vorgesehene Auslöser 11 den Bereich der ersten Sperrklinke 12 und drückt diese bei überstreichen der 180 Grad Bewegung des Hebels 5 nach oben. In diesem Moment ist der eigentliche Umschaltvorgang des Handantriebes 1 vollendet und der nächste Festkontakt des Umstellers mittels des beweglichen Kontaktes beschaltet. Der Hebel 5 befindet sich nun in einer Anschlagsposition, in der er in der einen Richtung nicht mehr weiter bewegt werden kann. Nun erfolgt die Rückbewegung in die stationäre Ausgangslage des Hebels 5. Indem bei Erreichen der Anschlagsposition die erste Sperrklinke 12 mittels des Auslösers 11 aus dem Verzahnungseingriff des Sperrrades 10 genommen wurde und damit gleichzeitig über das Verbindungsstück 18 die untere Sperrklinke 13 in Verzahnungseingriff mit dem Sperrrad 10 gelangt ist, kann die Rückbewegung auf Grund der geometrisch speziell definierten kegelförmigen Zacken des Sperrrades 10 und hakenförmigen Enden der Sperrklinken 12 und 13 erfolgen. Dass beim Zurückbewegen des Hebels 5 in seine stationäre Ausgangslage kein Moment auf die Antriebswelle 4 des Handantriebes 1 übertragen wird, wird mittels des Ratschenmechanismus 7 sichergestellt. Ist der Hebel 5 in seiner stationären Ausgangslage angekommen, so löst er mittels des Mikroschalters 8 den mit diesem gekoppelten Leistungsschalter des Transformators aus. Der Umschaltvorgang ist nun endgültig abgeschlossen und der Transformator kann wieder mit Strom und Spannung beaufschlagt werden.If the
Claims (5)
aufweisend eine Antriebswelle, auf die eine, eine Umschaltung zwischen benachbarten Kontakten des Umstellers, einleitende Drehbewegung ausübbar ist,
eine über ein Getriebe mit der Antriebswelle in Wirkverbindung stehende Abtriebswelle,
und ein Gehäuse, das die funktionswesentlichen Bauteile des Getriebes aufnimmt, dadurch gekennzeichnet,
dass die auf die Antriebswelle (4) eingeleitete Drehbewegung mittels eines Hebels (5) erfolgt,
dass der Hebel (5) hierfür mit einem Sperrmechanismus (9) in Wirkverbindung steht, derart, dass dieser während eines Umschaltvorganges in nur eine definiert gewünschte Richtung bewegbar ist,
und dass die Kopplung zwischen der Antriebswelle (4) und dem Hebel (5) mittels einer Ratschenvorrichtung (7) erfolgt, derart, dass die über den Hebel (5) auf die Antriebswelle (4) eingeleitete Drehbewegung nur in der selben definiert gewünschten Richtung erfolgen kann, in die der Hebel (5) bewegbar ist.Manual drive for step-by-step, powerless operation of a diverter on a tapped transformer,
comprising a drive shaft, on which a, a switching between adjacent contacts of the diverter, introductory rotational movement is exercisable,
an output shaft operatively connected to the drive shaft via a transmission,
and a housing, which accommodates the functionally essential components of the transmission, characterized in that
in that the rotational movement introduced onto the drive shaft (4) takes place by means of a lever (5),
that the lever (5) for this purpose is in operative connection with a locking mechanism (9), such that it is movable during a switching operation in only a defined desired direction,
and that the coupling between the drive shaft (4) and the lever (5) by means of a ratchet device (7), such that the over the lever (5) on the drive shaft (4) introduced rotational movement takes place only in the same defined desired direction can, in which the lever (5) is movable.
dadurch gekennzeichnet,
dass der Sperrmechanismus (9) aus einem Sperrrad (10) mit einem Auslöser (11), einer mit dem Sperrrad (10) in Verzahnungseingriff bringbaren ersten Sperrklinke (12), einer weiteren mit dem Sperrrad (10) in Verzahnungseingriff bringbaren zweiten Sperrklinke (13) und einem die beiden Sperrklinken (12 und 13) mechanisch verbindenden Verbindungsstück (18) besteht.Hand drive according to claim 1,
characterized,
in that the locking mechanism (9) comprises a ratchet wheel (10) with a trigger (11), a first pawl (12) which can be meshed with the ratchet wheel (10), a second pawl (13) which can be meshed with the ratchet wheel (10) ) and one the two pawls (12 and 13) mechanically connecting connector (18).
dadurch gekennzeichnet,
dass das Getriebe (3) als Wendegetriebe ausgebildet ist.Hand drive according to claim 1,
characterized,
that the transmission (3) is designed as a reverse gear.
dadurch gekennzeichnet,
dass ein mit dem Hebel (5) in Wirkverbindung stehender Mikroschalter (8) vorgesehen ist.Hand drive according to claim 1 or 2,
characterized,
in that a microswitch (8) operatively connected to the lever (5) is provided.
dadurch gekennzeichnet,
dass der Mikroschalter (8) als Öffner oder Schließer ausgebildet ist.Hand drive according to one of claims 1 to 4,
characterized,
that the microswitch (8) is designed as an opener or closer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011104885A DE102011104885A1 (en) | 2011-06-18 | 2011-06-18 | hand drive |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2535912A1 true EP2535912A1 (en) | 2012-12-19 |
Family
ID=45939207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12163083A Withdrawn EP2535912A1 (en) | 2011-06-18 | 2012-04-04 | Manual drive |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2535912A1 (en) |
DE (1) | DE102011104885A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016154915A1 (en) * | 2015-03-31 | 2016-10-06 | Abb技术有限公司 | Rotary limiting device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039129B (en) * | 1954-04-02 | 1958-09-18 | Siemens Ag | Step switching devices with intermittent gears for step change gears of regulating transformers |
DE1227977B (en) * | 1962-10-29 | 1966-11-03 | Ass Elect Ind | Arrangement for actuating electrical switches |
DE3541888A1 (en) | 1985-11-27 | 1987-06-04 | Reinhausen Maschf Scheubeck | Manual drive for off-load tap changers of tapped transformers |
DE102005009193B3 (en) | 2005-03-01 | 2006-08-17 | Maschinenfabrik Reinhausen Gmbh | Converter for switching between different coil terminals of a stepper transformer for adjusting voltage having a shaft driven by a hand wheel or an allen key |
DE102008036006B3 (en) * | 2008-08-01 | 2009-08-13 | Maschinenfabrik Reinhausen Gmbh | hand drive |
DE102008048018B3 (en) * | 2008-09-19 | 2009-10-22 | Maschinenfabrik Reinhausen Gmbh | hand drive |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD11993A (en) * | ||||
GB799665A (en) * | 1954-09-10 | 1958-08-13 | English Electric Co Ltd | Improvements in and relating to escapement devices |
DE7143984U (en) * | 1971-11-23 | 1972-02-03 | Siemens Ag | Drive for an electrical power switch |
-
2011
- 2011-06-18 DE DE102011104885A patent/DE102011104885A1/en not_active Withdrawn
-
2012
- 2012-04-04 EP EP12163083A patent/EP2535912A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039129B (en) * | 1954-04-02 | 1958-09-18 | Siemens Ag | Step switching devices with intermittent gears for step change gears of regulating transformers |
DE1227977B (en) * | 1962-10-29 | 1966-11-03 | Ass Elect Ind | Arrangement for actuating electrical switches |
DE3541888A1 (en) | 1985-11-27 | 1987-06-04 | Reinhausen Maschf Scheubeck | Manual drive for off-load tap changers of tapped transformers |
DE102005009193B3 (en) | 2005-03-01 | 2006-08-17 | Maschinenfabrik Reinhausen Gmbh | Converter for switching between different coil terminals of a stepper transformer for adjusting voltage having a shaft driven by a hand wheel or an allen key |
DE102008036006B3 (en) * | 2008-08-01 | 2009-08-13 | Maschinenfabrik Reinhausen Gmbh | hand drive |
DE102008048018B3 (en) * | 2008-09-19 | 2009-10-22 | Maschinenfabrik Reinhausen Gmbh | hand drive |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016154915A1 (en) * | 2015-03-31 | 2016-10-06 | Abb技术有限公司 | Rotary limiting device |
Also Published As
Publication number | Publication date |
---|---|
DE102011104885A1 (en) | 2012-12-20 |
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