EP0949643B1 - Elektrisches Schaltgerät, insbesondere elektromagnetisches Schaltgerät mit Vakuumschaltröhre - Google Patents
Elektrisches Schaltgerät, insbesondere elektromagnetisches Schaltgerät mit Vakuumschaltröhre Download PDFInfo
- Publication number
- EP0949643B1 EP0949643B1 EP99106099A EP99106099A EP0949643B1 EP 0949643 B1 EP0949643 B1 EP 0949643B1 EP 99106099 A EP99106099 A EP 99106099A EP 99106099 A EP99106099 A EP 99106099A EP 0949643 B1 EP0949643 B1 EP 0949643B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting mechanism
- axle guide
- bearing
- switching
- switching device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
- H01H33/6683—Means for obtaining or monitoring the vacuum by gettering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/022—Details particular to three-phase circuit breakers
Definitions
- the invention relates to an electrical switching device with a contact drive, in particular an electromagnetic switching device with a magnetic drive with magnetic core and armature and with at least one vacuum interrupter with a fixed contact and one with a lifting rod in direct linear Operationally connected movable contact and one with the lifting rod and the armature operatively connected rocker switch to implement the Drive movement in a switching movement of the movable contact, wherein the lifting rod at one end with the one carrying the movable contact Contact carrier is firmly connected and the contact carrier on the output side of the Vacuum switching tube in a tube bearing with respect to the longitudinal axis of the lifting rod is slidably mounted.
- the invention has for its object, even with a non-linear control and attack of the rocker switch with the in linear operative connection the movable switching contact standing rod an improved guidance the same to achieve a non-centered encounter of the To avoid contacts.
- an opportunity is to be created the stroke of the lifting rod when opening the switch contacts in a maximum limit extended position.
- the invention solves this problem by design according to the invention of a generic switching device in such a way that the lifting rod their other end in a second axle guide bearing with respect to their Longitudinal axis is slidably mounted and the operative connection of the Shift paddle on the lifting rod between the tube bearing and the axle guide bearing is arranged.
- the movable contact of the vacuum interrupter by direct connection of the lifting rod only in the tube bearing of the vacuum interrupter, but also behind the actuation point or point of application of the rocker switch on the lifting rod Transfer of the switching movement of the armature.
- a contact pressure spring is used to control the rocker switch on the lifting rod provided coaxial to the lifting rod between the two bearings, which is supported on the side facing the tube bearing on the lifting rod and on the side facing the axle guide bearing at the fork ends supports the rocker switch, so that a movement of the rocker switch over the contact pressure spring on the lifting rod and the connected to it moving contact is transmitted.
- a buffer is movably arranged on the lifting rod.
- This buffer is preferably in three parts and consists of one on the rocker switch or their fork ends adjacent disc and a conical pan and Conical washer, which on the lock nut or round nut of the lifting rod in Bear the axle guide bearing.
- the axial guidance of the lifting rod in the Additional axle guide bearings are used, for example, at the end the lifting rod firmly attached round nut as a plain bearing, the for example, is also attached as a lock nut. Because the rocker switch cannot move the lifting rod completely axially due to its pivoting movement, however, this is due to the additional second axial guidance of the lifting rod balanced in the axle guide bearing by means of the round nut or the axial guidance improved.
- the axle guide bearing is open its inner end face adjacent to the end of the lifting rod a stop surface for the round nut to limit the maximum permissible Opening path of the lifting rod is formed when the switch contacts are opened.
- the contact pressure spring takes off the electromechanical forces and limits the opening path of the Rod.
- this stop is used as an emergency stop on the axle guide bearing, by striking the round nut here. This can prevent the maximum compatible opening travel of the metal bellows of the vacuum interrupter is not exceeded.
- the round nut slides in the axle bearing guide in the axial direction of the lifting rod under the action of the actuation attack of the rocker switch, one certain friction occurs. For this reason, the round nut is preferred made of a good sliding material.
- the axle guide bearing can in the area of the side walls of the housing Switching device, for example, by means of perpendicular to the longitudinal axis of the axle guide bearing and the lifting rod on both sides through the axle guide bearing in the Housing guided screws are attached.
- the switching tube also includes the movable contact carrier 43 the movable contact 44, whose movement in the direction of arrow P2, P2 'by means of the metal bellows 46 sealed against the vacuum interrupter 45 is.
- the vacuum interrupter 45 On the output side, the vacuum interrupter 45 has the tube bearing 47, in that of the contact carrier 43 in the slide bearing 47a in the switching movement direction is slidably mounted. In a linear direct operative connection with the movable contact carrier 43 and thus the movable contact 44 the lifting rod 5 attached to the end of the contact carrier 43, which in this Fastening area is also guided through the tube bearing 47.
- the end of the lifting rod 5 is axially guided in the axle guide bearing 6 the axle guide bearing 6 in the area of the side wall of the rail support housing 4 arranged and there by means of screws 53 which are perpendicular to Longitudinal axis X of the lifting rod are arranged.
- a contact pressure spring 7 is coaxial with Lift rod arranged, which at one end on the lock nut 55 a spring plate 56 with internal thread arranged there rests and is supported and is fixed, while at the other end the contact pressure spring 7th one longitudinally displaceable in both directions along the axis X spring plate with extension 58 on which the rocker switch with its fork ends 22a, 22b attacks.
- the axle guide bearing 6 for the free end of the lifting rod 5 is in the figures 3a, 3b shown in more detail. It has a bearing bore 61 with an outlet opening 62 at the front end, which is smaller than the bearing bore 61, so that a contact surface 63 is formed on the inside of the end face is. 3b, the through holes 64, 65 are the Axle bearing guide for fastening the same to the rail support housing 4 can be seen.
- a two-hole round nut 51 fastened from a slidable material.
- the sliding surface and guide surface forming round nut at the extreme end of the lifting rod and the Hexagon nut 52 is then arranged on the inside.
- the two-hole round nut 51 serves to guide the lifting rod in the execution bearing 6 while the hexagon nut 52 is used for stroke adjustment and by means of the round nut is countered.
- the rocker switch 2 lies with its fork ends 22a, 22b not directly on the axle guide bearing 6, but it is a movable one Multi-part buffer arranged longitudinally displaceably on the lifting rod 5 provided between axle guide bearing 6 and rocker switch 2.
- This buffer is composed of a disc 57, which is directly on the fork ends of the rocker switch abuts, and a conical socket 59b and conical disk 59a together.
- This Buffer also serves to compensate for the non-linear actuation attack Switch rocker on the lifting rod via the contact pressure spring and the spring plate 56 especially when returning the lifting rod in the direction of arrow P2 ' when opening the switch contacts and swiveling the rocker switch back into the 1 shown starting position.
- the movable contact 4, the movable Contact carrier 43, the strand 14, the nuts 54, 55, the lifting rod 5 and the two-hole round nut 51 and the hexagon nut 52 are rigid with one another connected and overall in the direction of arrow P2 to close the contacts and in the direction of arrow P2 'to open the switching contacts in the tube bearing 47 and the axle guide bearing 6 slidably mounted.
- the closing movement is shown schematically in FIG. 5.
- the opening movement takes place in the opposite direction, i.e. the anchor moves in the direction of the arrow P3 ', the rocker moves back due to the spring force the contact pressure spring 7 in the starting position, the lifting rod 5 with the movable contact 44 is moved back into the open position becomes.
Description
- Figur 1:
- einen Querschnitt durch den Schaltraum mit Vakuumschaltröhre und Schaltwippe umfassenden Teil eines Vakuumschaltgerätes;
- Figur 2:
- den auszugsweisen Querschnitt EE von Fig. 4;
- Figur 3a:
- das Achsführungslager im Querschnitt;
- Figur 3b:
- den Schnitt BB gemäß Fig. 3a;
- Figur 4:
- eine Draufsicht auf den Schaltraum gemäß Fig. 1 ohne Deckel des Schaltgerätes;
- Figur 5:
- das Detail der Schaltwippe im Betätigungseingriff des Einschaltzustandes mit der Hubstange gemäß Fig. 1.
Claims (10)
- Elektrisches Schaltgerät mit einem Kontaktantrieb, insbesondere ein elektromagnetisches Schaltgerät mit einem Magnetantrieb mit Magnetkern und Anker und mit wenigstens einer Vakuumschaltröhre mit einem Festkontakt und einem mit einer Hubstange in direkter linearer Wirkverbindung stehenden beweglichen Kontakt und einer mit der Hubstange und dem Anker in Wirkverbindung stehenden Schaltwippe zur Umsetzung der Antriebsbewegung in eine Schaltbewegung des beweglichen Kontaktes, wobei die Hubstange an einem Ende mit dem den beweglichen Kontakt tragenden Kontaktträger fest verbunden ist und der Kontaktträger ausgangsseitig der Vakuumschaltröhre in einem Rohrlager in bezug auf die Längsachse der Hubstange gleitverschieblich gelagert ist, dadurch gekennzeichnet, daß die Hubstange (5) an ihrem anderen Ende in einem zweiten Achsführungslager (6) in bezug auf ihre Längsachse (X) gleitverschieblich gelagert ist und die Wirkverbindungsstelle der Schaltwippe (2) an der Hubstange (5) zwischen dem Röhrenlager (47) und dem Achsführungslager (6) angeordnet ist.
- Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, daß eine Kontaktdruckfeder (7) koaxial zur Hubstange (5) zwischen den beiden Lagern (47, 6) vorgesehen ist, die sich an der dem Röhrenlager (47) zugewandten Seite an der Hubstange abstützt und auf der dem Achsführungslager (6) zugewandten Seite an den Gabelenden (22a, 22b) der Schaltwippe (2) abstützt, so daß eine Bewegung der Schaltwippe über die Kontaktfeder auf die Hubstange und dem mit dieser verbundenen beweglichen Kontakt übertragen wird.
- Schaltgerät nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß zwischen den Gabelenden (22a, 22b) der Schaltwippe (2) und dem in dem Achsführungslager (6) geführten Ende der Hubstange (5) ein Puffer (58, 59a, 59b) beweglich auf der Hubstange angeordnet ist.
- Schaltgerät nach Anspruch 3, dadurch gekennzeichnet, daß der Puffer aus einer an den Gabelenden (22a, 22b) der Schaltwippe (2) anliegenden Scheibe (57) und einer Kegelpfanne (59b) und einer Kegelscheibe (59a) besteht.
- Schaltgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß auf den in dem Achsführungslager (6) geführten Ende der Hubstange (5) eine Zweiloch-Rundmutter (51) als Gleitlager zum Führen der Hubstange befestigt ist, beispielsweise mittels einer Kontermutter (52).
- Schaltgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß auf der Hubstange (5) im Bereich des Achsführungslagers (6) eine Sechskantmutter (52) zur Hubeinstellung der Hubstange vorgesehen ist und die Zweiloch-Rundmutter (51) zum Kontern der Sechskantmutter (52) dient.
- Schaltgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Achsführungslager (6) auf seiner dem Ende der Hubstange (5) benachbarten innenseitigen Stirnfläche eine Anschlagfläche (63) für die Zweiloch-Rundmutter zur Begrenzung des maximal zulässigen Öffnungsweges der Hubstange beim Öffnen der Schaltkontakte bildet.
- Schaltgerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Puffer an der Sechskantmutter im Achsführungslager (6) anliegt.
- Schaltgerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die das Gleitlager bildende Rundmutter (51) am Ende der Hubstange befestigt ist und bei der Öffnungsbewegung der Schaltkontakte die maximale Bewegung der Hubstange, sofern diese nicht bereits durch die Kontaktdruckfeder begrenzt werden konnte, durch Anschlagen an der Anschlagfläche (63) der Achsführung des Achsführungslagers (6) begrenzt.
- Schaltgerät nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Achsführungslager (6) mittels senkrecht zur Längsachse des Lagers (6) und der Hubstange (5) beidseitig durch das Achsführungslager in das Gehäuse geführter Schrauben (53) befestigt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19814398A DE19814398C1 (de) | 1998-03-31 | 1998-03-31 | Elektrisches Schaltgerät, insbesondere elektromagnetisches Schaltgerät mit Vakuumschaltröhre |
DE19814398 | 1998-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0949643A1 EP0949643A1 (de) | 1999-10-13 |
EP0949643B1 true EP0949643B1 (de) | 2003-05-28 |
Family
ID=7863109
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99101052A Expired - Lifetime EP0955655B1 (de) | 1998-03-31 | 1999-01-22 | Abschirmung und Getter für eine Vakuumschaltröhre und Verfahren zum Befestigen des Getters an der Abschirmung |
EP99106099A Expired - Lifetime EP0949643B1 (de) | 1998-03-31 | 1999-03-26 | Elektrisches Schaltgerät, insbesondere elektromagnetisches Schaltgerät mit Vakuumschaltröhre |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99101052A Expired - Lifetime EP0955655B1 (de) | 1998-03-31 | 1999-01-22 | Abschirmung und Getter für eine Vakuumschaltröhre und Verfahren zum Befestigen des Getters an der Abschirmung |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP0955655B1 (de) |
AT (1) | ATE241854T1 (de) |
DE (3) | DE19814398C1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10238950B4 (de) * | 2002-08-24 | 2008-04-10 | Abb Patent Gmbh | Vakuumschaltgerät |
DE10322927A1 (de) | 2003-05-21 | 2004-12-16 | Abb Patent Gmbh | Getter für eine Vakuumschaltkammer und Verfahren zum Befestigen des Getters vakuumseitig |
DE102014212583A1 (de) * | 2014-06-30 | 2015-12-31 | Siemens Aktiengesellschaft | Vermeidung von Fehlausrichtungen einer Antriebsstange eines Leistungsschalters |
CN110718415B (zh) * | 2018-07-12 | 2021-11-16 | 平高集团有限公司 | 一种真空断路器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1211306B (de) * | 1963-05-15 | 1966-02-24 | Ass Elect Ind | Vakuumschalter |
US4032870A (en) * | 1975-09-15 | 1977-06-28 | General Electric Company | Electric circuit breaker with electromagnetic-assist means for opposing magnetic contact-separating forces |
NL170995C (nl) * | 1978-12-01 | 1983-01-17 | Hazemeijer Bv | Vacuuemschakelaar, alsmede metalen scherm en vangstofelement daarvoor. |
DE8905949U1 (de) * | 1989-05-11 | 1990-09-13 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
KR940000049Y1 (ko) * | 1991-12-13 | 1994-01-05 | 금성계전 주식회사 | 진공차단기의 아크방지용 개폐장치 |
FR2737805B1 (fr) * | 1995-08-08 | 1997-08-29 | Gec Alsthom T & D Sa | Rupto-fusible sectionneur |
-
1998
- 1998-03-31 DE DE19814398A patent/DE19814398C1/de not_active Expired - Fee Related
-
1999
- 1999-01-22 DE DE59905131T patent/DE59905131D1/de not_active Expired - Fee Related
- 1999-01-22 EP EP99101052A patent/EP0955655B1/de not_active Expired - Lifetime
- 1999-03-26 DE DE59905706T patent/DE59905706D1/de not_active Expired - Lifetime
- 1999-03-26 AT AT99106099T patent/ATE241854T1/de not_active IP Right Cessation
- 1999-03-26 EP EP99106099A patent/EP0949643B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59905131D1 (de) | 2003-05-28 |
EP0955655B1 (de) | 2003-04-23 |
DE59905706D1 (de) | 2003-07-03 |
DE19814398C1 (de) | 1999-12-30 |
EP0949643A1 (de) | 1999-10-13 |
EP0955655A1 (de) | 1999-11-10 |
ATE241854T1 (de) | 2003-06-15 |
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