EP0415937A1 - Entrainement a declic par ressort de commutateurs de reglage en charge de commutateurs a gradins - Google Patents

Entrainement a declic par ressort de commutateurs de reglage en charge de commutateurs a gradins

Info

Publication number
EP0415937A1
EP0415937A1 EP89903661A EP89903661A EP0415937A1 EP 0415937 A1 EP0415937 A1 EP 0415937A1 EP 89903661 A EP89903661 A EP 89903661A EP 89903661 A EP89903661 A EP 89903661A EP 0415937 A1 EP0415937 A1 EP 0415937A1
Authority
EP
European Patent Office
Prior art keywords
spring
coupling element
drive
switches
storage spring
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.)
Ceased
Application number
EP89903661A
Other languages
German (de)
English (en)
Inventor
Ernst Sonntagbauer
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0415937A1 publication Critical patent/EP0415937A1/fr
Ceased legal-status Critical Current

Links

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/11—Tripping mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1503—Rotary to intermittent unidirectional motion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18856—Oscillating to oscillating
    • Y10T74/18864—Snap action

Definitions

  • the invention relates to a spring-loaded drive for diverter switches of tap changers whose storage spring can be tensioned by a drive whose shaft rotates either clockwise or counterclockwise, with an element driven by the storage spring during the switching process for controlling the contact movement, which preferably is a cam disk or a link control, performs a rotary movement.
  • Control transformers have fast resistance switching, the switching contact shafts of which are controlled by means of a cam disk drive driven by an energy store.
  • the cam disc is moved back and forth from one end position to the other and back again, regardless of the respective direction of movement of the selector. This means that the contacts that closed last when the cam was moved open first when the cam was moved back, or that the contacts that closed during the
  • the object of the invention is therefore to provide a switching mechanism which allows switching and auxiliary contacts and magnetic triggers to be controlled, the movement sequence of which is different relative to the main contact movement during the switching on and off process.
  • the object is achieved by the invention.
  • This is characterized in that the storage spring and the driven element are connected to a coupling element which can be rotated in one direction only, regardless of the direction of rotation of the drive.
  • the invention makes it possible to carry out contact sequence controls in a simple manner and to reliably avoid incorrect switching.
  • End divisions of the coupling element are offset from one another by 180 °. This ensures jerk-free switching on both halves of the program discs attached.
  • a movable catch is provided in each end position, in which a catch located on the coupling element can be latched in after each switching operation. In this way, exact start and end positions of applied program discs can be achieved.
  • a fastening pin connected to the storage spring is on the diameter line of the latching lug
  • Coupling element is provided, wherein the distance between the locking lug and the fastening pin is greater than the radius of the coupling element.
  • the storage spring can be tensioned in only one direction. This results in the advantage of an uncomplicated and therefore particularly reliable design.
  • the storage spring is tensioned by an electric motor which is provided within the switch housing and acts directly on a drive shaft.
  • FIG. Fig. 2 shows a switching mechanism in section, wherein the coupling element shown in Fig. 1 is used.
  • Switch mechanism shows in section, a second embodiment is described in which the coupling element and locking device are spatially separated.
  • the coupling element 6 is designed in FIG. 1 as a circular disk, on the outer circumference of which a fixed locking lug 20 is formed.
  • the detent 20, two movable detents 18, 19 are arranged, which, offset by the angle of rotation of 180 °, are fastened in the switch housing 3.
  • the fastening pin 12 for the storage spring 5 is inserted on the diameter line of the coupling element 6 starting from the locking lug 20, the distance between the locking lug 20 and the fastening pin 12 being greater than the radius of the coupling element 6.
  • the movable catches 18, 19 prevent any rotation of the coupling element 6. In the starting position shown in FIG. 1, this is the catch 18, which rests on the catch 20 and thereby blocks the coupling element 6.
  • FIG. 2 shows a cylindrical switch housing 3 which is closed on all sides and which is separated by an intermediate wall 13 into an upper and a lower housing area.
  • a switch shaft 9 In the lower part, vertically and centrally arranged, there is a switch shaft 9 with an end protruding into the upper part, on which the coupling element 6 is placed.
  • the switch shaft 9 is supported by means of ball bearings in the housing base and in the intermediate wall 13 of the housing.
  • a motor and / or a hand crank is provided as the actuating element for the spring-loaded drive, outside the switch housing 3. This is not shown in the drawing. One acts from this actuating element
  • a program disk 8 is placed on the switch shaft 9 and rigidly connected to the coupling element 6 located in the upper housing part.
  • the rotation of the connecting shaft 17 causes a movement of the tension crank 4 rigidly connected to it, which in turn tensions the storage spring 5 of the coupling element 6.
  • the tension crank 4 moves the storage spring 5 clockwise by the angle of rotation of 180 °. If the movable catch 18 releases the coupling element 6 by disengaging the catch 20, it rotates clockwise. The coupling element 6 rotates until the other end division fixed by the second movable catch 19 is reached. This catch 19 and the catch 20 now prevent the coupling element 6 from turning further.
  • the actuator rotates the drive shaft 1 in
  • the rotation of the connecting shaft 17 causes a movement of the tension crank 4, which tensions the storage spring 5.
  • the tension crank 4 moves the storage spring 5 counterclockwise by the angle of rotation of 180 °. If the movable catch 19 releases the clapper element 6 by disengaging the catch 20, its rotation again takes place in a clockwise direction.
  • the coupling element 6 rotates until the first original position, which is fixed by the movable catch 19, is reached.
  • the coupling element 6 thus rotates, regardless of whether the storage spring 5 was tensioned by rotating the tension crank 4 clockwise or counterclockwise, after release by the movable catches 18 and 19, always only clockwise.
  • the program disk 8 in FIG. 2 has two program grooves 16, which correspond to the circumference of cam disks.
  • Movable, right-angle contact pieces 7 are provided in the switch housing 3, the one, longer leg of which is mounted in the intermediate wall 13 of the housing by means of an axis 22.
  • the other, shorter leg is as Counterpart to a fixed contact piece 14 arranged inside the housing.
  • a guide roller 15 slides in each program groove 16 and is effective via a joint 21 on the leg of the contact piece 7 mounted in the intermediate wall 13 of the housing.
  • the program disk 8 can also be provided with more than those shown here or with program grooves 16 on both sides.
  • Another possibility of increasing the number of switching programs is that a plurality of program disks 8 are placed on the switch shaft 9.
  • a cylindrical switch housing 32 is closed on all sides by means of an upper cover 35 and a lower cover 36 and divided into an upper, middle and lower housing region by a housing intermediate wall 34 and a housing intermediate plate 33.
  • a solid shaft 25 projects vertically and centrally, from the outside through the lower cover 36, and through the intermediate housing wall 34 and the intermediate housing plate 33 into the upper housing area.
  • the solid shaft 25 is fitted with two needle bearings 45 and a hollow shaft 26 is slid over it, which extends from the lower to the upper housing area.
  • the solid shaft 25 projects further than the hollow shaft 26 into the upper housing area and is rigidly connected to a coupling element 27 there. Also located in this housing area, parallel to the intermediate housing plate 33 and rigidly connected to the hollow shaft 26, is a tensioning crank 31 with a 90 short angled pin holder 46, in which a fastening pin 29 is inserted. Between this and another, on A storage spring 30 is constricted on the outer circumference of the coupling pin 28 which is attached.
  • a reduction gear is provided, the large gear 40 of which is rigidly connected to the hollow shaft 26, and the pinion 39 is seated on a driven shaft 41 mounted in the intermediate wall 34 and in the intermediate plate 33.
  • a motor and or a hand crank is provided as the actuating element for the spring-loaded drive, outside the switch housing 32. Read is not shown in the drawing. From this actuating element, one end of the drive shaft 37 mounted in the wall of the switch housing 32 acts on an internal one
  • first bevel gear which is part of an angular gear 38
  • the second bevel gear is connected to the driven shaft 41.
  • a viewing lever 43 is arranged in the lower housing area and rigidly connected to the solid shaft 25, as part of a latching device and parallel to the lower cover 36.
  • a leaf spring thus acts on the stop angle
  • a release lever 44 is parallel to the intermediate wall 34 and has a rigid connection to the hollow shaft 26. Its downward-facing latching nose overlaps with the shorter leg of the stop bracket 42. A latching stop 45 fastened to the lower cover overlaps with the stop lever 43 of the latching device.
  • One or more program disks are placed outside the switch housing 32 on the solid shaft 25. This is not shown in the drawing.
  • the stop angle 42 and detent stop 45 prevent any rotation of the solid shaft 25 and thus also of the coupling element 27 rigidly connected to it.
  • an actuating element that is to say a motor or crank drive
  • the drive shaft 37 rotated so that, via the bevel gear 38, the driven shaft 41 and the pinion 39 with the large gear 40 of the reduction gear, the hollow shaft 26, viewed from above, moves clockwise.
  • the rotation of the hollow shaft 26 causes a movement of the tension crank 31 rigidly connected to it, which in turn tensions the storage spring 30 of the coupling element 27.
  • the tension crank 31 moves the storage spring 30 clockwise by the angle of rotation of 180 °.
  • the release lever 44 rigidly connected to it is also rotated clockwise through the rotation angle of 180 ° into the right half of the lower housing part.
  • Unlocking lever 44 is also rotated counterclockwise through the 180 ° angle of rotation into the left half of the lower housing part.

Abstract

Entraînement à déclic par ressort de commutateurs de réglage en charge de commutateurs à gradins dont le ressort accumulateur peut être armé par un entraînement. Dans les commutateurs usuels de réglage en charge, un engrenage déplace dans les deux sens, entre des positions extrêmes, un disque à came, ce qui fait que les contacts fermés en dernier lors du déplacement dans un sens du disque à came sont les premiers à s'ouvrir lors du retour du disque à came, et vice-versa. Cette succession rigide des contacts ne convient pas pour des commutateurs de réglage en charge à thyristor. Selon l'invention, l'élément entraîné est relié à un élément d'accouplement rotatif dans une seule direction, indépendamment du sens de rotation de l'entraînement, ce qui permet d'obtenir aisément des successions diverses de contacts et d'éviter de manière sûre des erreurs de commutation.
EP89903661A 1988-03-18 1989-03-14 Entrainement a declic par ressort de commutateurs de reglage en charge de commutateurs a gradins Ceased EP0415937A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT739/88 1988-03-18
AT0073988A AT389187B (de) 1988-03-18 1988-03-18 Federsprungantrieb fuer lastumschalter von stufenschaltern

Publications (1)

Publication Number Publication Date
EP0415937A1 true EP0415937A1 (fr) 1991-03-13

Family

ID=3498523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89903661A Ceased EP0415937A1 (fr) 1988-03-18 1989-03-14 Entrainement a declic par ressort de commutateurs de reglage en charge de commutateurs a gradins

Country Status (8)

Country Link
US (1) US5123291A (fr)
EP (1) EP0415937A1 (fr)
JP (1) JPH03500106A (fr)
AT (1) AT389187B (fr)
BG (1) BG51467A3 (fr)
HU (1) HUT55163A (fr)
RU (1) RU1828559C (fr)
WO (1) WO1989008924A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510809C1 (de) * 1995-03-24 1996-07-04 Reinhausen Maschf Scheubeck Lastumschalter eines Stufenschalters
DE19755538C2 (de) * 1997-12-13 2003-03-06 Bruno Dietze Fa Leuchtstoffentladungslampe mit Überstromsicherung
DE19913814C1 (de) * 1999-03-26 2000-04-20 Reinhausen Maschf Scheubeck Kraftspeicher für einen Stufenschalter
DE10050932C1 (de) 2000-10-13 2002-06-13 Reinhausen Maschf Scheubeck Kraftspeicher für einen Stufenschalter
US6492606B1 (en) 2001-08-21 2002-12-10 Electroswitch Corporation Snap action switch
JP4611869B2 (ja) * 2005-11-18 2011-01-12 株式会社日立産機システム モールド変圧器及びそれに用いるタップカバー
SE529799C2 (sv) * 2005-12-09 2007-11-27 Abb Research Ltd Anordning för överföring av vridrörelse
SE529735C2 (sv) * 2006-03-28 2007-11-06 Abb Technology Ltd Sätt och anordning för överföring av vridrörelse
DE102009034627B3 (de) 2009-07-24 2010-09-09 Maschinenfabrik Reinhausen Gmbh Laststufenschalter mit Kraftspeicher
DE102010015051B4 (de) 2010-04-15 2012-06-14 Maschinenfabrik Reinhausen Gmbh Mechanischer Schaltkontakt
DE102011013749B4 (de) 2011-03-12 2015-03-19 Maschinenfabrik Reinhausen Gmbh Laststufenschalter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB759740A (en) * 1953-12-21 1956-10-24 Mond Nickel Co Ltd Improvements relating to apparatus for heating solid materials in contact with gases
GB893287A (en) * 1958-12-10 1962-04-04 Gen Electric Co Ltd Improvements in operating arrangements for on-load transformer tap-changing switches
US2995043A (en) * 1960-06-20 1961-08-08 G & W Electric Speciality Co Two position snap action operator
US3211870A (en) * 1962-12-19 1965-10-12 G & W Electric Speciality Co Toggle actuated switch operator using cams as release means
JPS5749137A (en) * 1980-09-09 1982-03-20 Mitsubishi Electric Corp Device for energizing on-load tap changer
JPS63195924A (ja) * 1987-02-09 1988-08-15 三菱電機株式会社 早切機構
US4798922A (en) * 1987-10-06 1989-01-17 A. B. Chance Company Spring actuated latch, load and trip mechanism for switchgear

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8908924A1 *

Also Published As

Publication number Publication date
RU1828559C (ru) 1993-07-15
US5123291A (en) 1992-06-23
JPH03500106A (ja) 1991-01-10
HUT55163A (en) 1991-04-29
BG51467A3 (en) 1993-05-14
ATA73988A (de) 1989-03-15
WO1989008924A1 (fr) 1989-09-21
AT389187B (de) 1989-10-25
HU892552D0 (en) 1991-03-28

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