EP1432291B1 - Dispositif de serrage pour une électrode échangeable d'un four électrique - Google Patents

Dispositif de serrage pour une électrode échangeable d'un four électrique Download PDF

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Publication number
EP1432291B1
EP1432291B1 EP03029528A EP03029528A EP1432291B1 EP 1432291 B1 EP1432291 B1 EP 1432291B1 EP 03029528 A EP03029528 A EP 03029528A EP 03029528 A EP03029528 A EP 03029528A EP 1432291 B1 EP1432291 B1 EP 1432291B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping cylinder
cylinder
clamp according
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03029528A
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German (de)
English (en)
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EP1432291A1 (fr
Inventor
Arndt Dung
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Individual
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Individual
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Priority claimed from DE10261162.9A external-priority patent/DE10261162B4/de
Application filed by Individual filed Critical Individual
Publication of EP1432291A1 publication Critical patent/EP1432291A1/fr
Application granted granted Critical
Publication of EP1432291B1 publication Critical patent/EP1432291B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/103—Mountings, supports or terminals with jaws

Definitions

  • the invention relates to a clamping for the replaceable electrode of an electric melting unit, consisting of a located at the free end of the electrode support jaw, leading to the free end of the support arm, the electrode comprehensive clamping bracket and a clamping cylinder mounted in the support arm, the piston rod acting on the clamping bar under the Exposure of a spring assembly located in the annular space of the clamping cylinder, the clamping bracket brings clamping against the embraced by him electrode to the plant, with a bottom-side connection for the supply of pressure medium in the bottom-side cylinder space of the clamping cylinder to release the tension bracket.
  • the component of the clamping clamping cylinder requires the fatigue of the spring assembly because of prolonged use of the clamping of the exchange. This must be the first
  • the tensioning cylinders located in the electrode support arm are removed on site and, if necessary, transferred to the electrode support arm again following their retrofitting with a new spring assembly.
  • the screwed together with the clamping arm with the Elektrodentragarm screw are located in the frontal region of the electrode support arm. There they are exposed to considerable contamination, then also extremely high temperatures, influences that greatly affect the solubility of the screw. .
  • the invention has the primary object to provide a solution that provides the summary of the clamping cylinder with the Elektrodentragarm outside the range, which is exposed to the high, occurring during the melting temperatures, which is then in the area of heavy soil infestation ,
  • clamping cylinder is mounted in a receiving arm located in the axial direction continuous receptacle and the clamping cylinder is releasably fixed in the receptacle on the side remote from the electrode clamping voltage of the receptacle on its bottom.
  • the operator ie the attached assembly group, can then time-saving then parallel on the one hand perform the release of the clamping bracket from the cylinder and on the other hand, the release of the clamping cylinder with the Elektrodentragarm summarizing screw in favor of melting operation.
  • the solution according to the invention then advantageously allows the realization of the continuous monitoring of the clamping force of the compression springs causing the clamping of the electrode in the electrode holder during operation. This possibility and its realization is addressed in the subclaims 7 to 11.
  • the clamping cylinder 11, 12 receiving head of the electrode support arm is denoted by 21, it is a torsion-resistant construction of copper-plated steel or aluminum.
  • the front end of the head piece 21 forms a centrally continuous (212) head plate 211, with which the interacting with the clamped electrode 31 passing contact jaw 41 is summarized via screw detachably combined.
  • the head piece 21 Upstream of the contact jaw 41, the head piece 21 in the axial direction (double arrow A) displaceable leading clamping bracket 42.
  • the piston rod 14 of the accommodated in the head piece 21 tensioning cylinder 11, 12 above itself between the legs 421, 421 'of the Clamp 42 extending struts 422, 422 'releasably summarized (423, 423').
  • the located in a Tragarmkopf Sharing 21 recording 213, 214 positionally accommodated clamping cylinder 11,12 consists of the housing 11, the housing 11 releasably associated bottom 12, the piston 13 and the piston 13 outgoing, acting on the clamping bar 42 piston rod 14, which displaces under the action of a spring assembly 17 located in the annular space 16 of the cylinder in the direction of the arrow A ', brings about the clamping of the electrode 31.
  • the bottom 12 of the clamping cylinder 11, 12 with the housing 11 by inserting into an annular groove 111 in the housing wall disc segments 121 which are fixed in the installed state relative to the bottom 12 by means of screws 122.
  • the clamping cylinder 11, 12 is detachably fixed in the receptacle 213, 214 via the lid 214 of the receiving housing combined with the wall 213 by means of screws 216, wherein the through-going (611) in the housing bottom 214 passing through the bottom 214, combined with the cylinder bottom 12 in the axial direction displaceable threaded bolt 61, one on the supernatant 612 via the housing bottom 214 in threaded engagement with the bolt 61 clamping nut 62 in the tightened state, the bottom 12 of the cylinder 11, 12 and thus the cylinder 11, 12 as a whole relative to the ground 214 of the recording 213, 214 determines.
  • the extending through the threaded bolt 61 passage 611 is used to feed over the connected to the threaded bolt 61
  • Pressure fluid hose 63 supplied pressure medium in the bottom-side cylinder chamber 118 for releasing the clamping for the replacement of a spent electrode 31 by a new electrode. If pressure medium is fed into the cylinder chamber 118, the piston 13 is displaced against the spring pressure on the side of the annular space and thus to release the clamping (arrow A ").
  • the tensioning cylinder 11, 12 can also be pulled out of the receptacle in opposite directions (arrow B '), if this proves to be more practical on site. Both for the release of the various compounds as well as for the opposite output and then installation is in the rear region of the Tragarmkopfes 21 a pivotable in the sense of the double arrow C flap 217 is provided.
  • the legs 461 and 461 'of the bracket are summarized by a torsion-resistant cross member 47, which leads in an outgoing from the end face of the support arm 26 recess 261.
  • the traverse 47 is continuous (471) for the piston rod 14 of the clamping cylinder, which in turn with the traverse 47 by clamping or the clamping means is summarized solvable.
  • With 472 of the cross member 47 associated sliders are referred to, which lead to the inner wall of the electrode support arm 26.
  • the assignment of the pressure cell 81 to the clamping cylinder 11 ', 12' desirably allows the wired (811) transmission of the measured values to a remotely remote measured value display. As a result, disturbances in the current melting operation are avoided by itself from the clamping bracket with decreasing clamping pressure dissolving electrodes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Measuring Fluid Pressure (AREA)

Claims (11)

  1. Dispositif de serrage pour l'électrode (31) amovible d'un four électrique, formé par une mâchoire de contact (41) située au niveau de l'extrémité libre du bras de support d'électrode, un étrier de serrage (42) logé sur l'extrémité libre du bras de support (21) et entourant l'électrode (31), et un vérin de serrage (11, 12) monté dans le bras de support (21), dont la tige de piston (14), entrant en contact avec l'étrier de serrage (42), amène, sous l'effet d'un paquet de ressorts (17) situé dans l'espace annulaire (16) du vérin de serrage (11, 12), l'étrier de serrage (42) en appui bloqué contre l'électrode (31) qu'il entoure, comportant un raccord du côté fond pour l'admission d'un fluide sous pression dans l'espace (16) du côté fond du vérin de serrage (11, 12) pour désolidariser l'étrier de serrage (42), caractérisé en ce que le vérin de serrage (11, 12) est logé dans un logement (213) débouchant dans le sens axial et situé dans le bras de support (21), et le vérin de serrage (11, 12) est fixé par son fond (12) de manière amovible dans le logement (213) sur le côté du logement (213), détourné du dispositif de serrage.
  2. Dispositif de serrage selon la revendication 1, caractérisé en ce que le logement (213) pour le vérin de serrage (11, 12) est muni d'un couvercle (214), qui lui est associé de manière amovible et qui est traversé par un boulon fileté (61) traversant (611), qui entre en contact avec le fond (12) du vérin de serrage (11, 12) et peut être déplacé par rapport au couvercle (214) dans le sens axial et entre en contact avec le fond (12) du vérin de serrage (11, 12), et dont la saillie (612) au-dessus du couvercle (216) porte un écrou de serrage (62) qui est en prise avec ledit boulon fileté.
  3. Dispositif de serrage selon la revendication 2, caractérisé en ce que le boulon fileté (61) et le fond (12) du vérin de serrage (11, 12) sont réalisés d'un seul tenant.
  4. Dispositif de serrage selon la revendication 2, caractérisé en ce que le boulon fileté (61) traversant le fond (12) du vérin de serrage (11, 12) comporte une tête qui enserre par l'arrière le fond (12).
  5. Dispositif de serrage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le fond (12) du vérin de serrage (11, 12) est fixé par rapport au carter (11) du vérin au moyen de segments de disque (121), enserrés par l'arrière par ledit fond et s'engageant dans une rainure annulaire (111) ménagée dans le carter (11) du vérin.
  6. Dispositif de serrage selon la revendication 5, caractérisé en ce que les segments de disque (121) sont assemblés au fond (12) du vérin de serrage (11, 12) par l'intermédiaire d'assemblages vissés (122).
  7. Dispositif de serrage selon l'une quelconque des revendications 2 à 6, caractérisé en ce que, entre le couvercle (214) du logement (213), immobilisant le vérin de serrage (11', 12') par rapport au logement (213), et l'écrou de serrage (62'), situé sur la saillie du boulon fileté (61') au-dessus du couvercle (214), est monté un dynamomètre (81), qui est traversé par le boulon fileté (61') et signale la chute de pression dans le vérin de serrage transformée en impulsion électrique.
  8. Dispositif de serrage selon la revendication 7, caractérisé par un dynamomètre raccordé par une ligne (811) à un dispositif d'affichage des valeurs de mesure, éloigné du four.
  9. Dispositif de serrage selon la revendication 7, caractérisé par un émetteur, associé au dynamomètre et alimenté par une batterie, et un récepteur associé au dynamomètre et recevant des informations, qui sont émises par l'émetteur et sont retournées vers le dynamomètre et qui concernent la pression de serrage actuelle, la chute de pression et/ ou l'impulsion pour le déclenchement de signaux.
  10. Dispositif de serrage selon la revendication 9, caractérisé par une mesure de la pression basée sur l'effet piézoélectrique.
  11. Dispositif de serrage selon la revendication 9 ou la revendication 10, caractérisé par un amplificateur associé au capteur de valeurs de mesure.
EP03029528A 2002-12-20 2003-12-20 Dispositif de serrage pour une électrode échangeable d'un four électrique Expired - Lifetime EP1432291B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10261162.9A DE10261162B4 (de) 2002-12-20 2002-12-20 Einspannung für die auswechselbare Elektrode eines Elektroschmelzaggregats
DE10261162 2002-12-20
DE10311426 2003-03-13
DE10311426.2A DE10311426B4 (de) 2002-12-20 2003-03-13 Einspannung für eine auswechselbare Elektrode eines Elektroschmelzaggregats

Publications (2)

Publication Number Publication Date
EP1432291A1 EP1432291A1 (fr) 2004-06-23
EP1432291B1 true EP1432291B1 (fr) 2008-03-19

Family

ID=32395036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03029528A Expired - Lifetime EP1432291B1 (fr) 2002-12-20 2003-12-20 Dispositif de serrage pour une électrode échangeable d'un four électrique

Country Status (4)

Country Link
EP (1) EP1432291B1 (fr)
AT (1) ATE390032T1 (fr)
DE (2) DE10311426B4 (fr)
ES (1) ES2302893T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001991A2 (fr) * 2012-06-28 2014-01-03 Jacques Venter Dispositif de serrage d'électrode

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946303C (de) * 1944-01-29 1956-07-26 Bbc Brown Boveri & Cie Elektrodentragvorrichtung fuer elektrische Lichtbogenoefen mit einer luftgekuehlten Elektrodenfassung
US3937869A (en) * 1974-10-08 1976-02-10 Republic Steel Corporation Force sensing control apparatus and method for electric arc furnaces
DE3010894C2 (de) * 1980-03-21 1985-12-12 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Elektroden-Tragarm mit Öffnungsvorrichtung für Klemmbacken von elektrischen Lichtbogenöfen
DE3242934A1 (de) * 1982-11-20 1984-05-24 Mannesmann Rexroth GmbH, 8770 Lohr Regeleinrichtung fuer die hoehenverstellung der elektrode eines lichtbogenofens
DE3422950A1 (de) * 1983-06-23 1985-01-31 Mannesmann AG, 4000 Düsseldorf Elektrode fuer lichtbogenofen mit elektrodenbruchsicherung
US4653066A (en) * 1984-04-11 1987-03-24 Dixie Arc, Inc. Electrode holder assembly and electrode clamp for electric arc furnaces
DE8805807U1 (de) * 1988-05-02 1989-08-31 Badische Stahl-Engineering GmbH, 7640 Kehl Tragarm für eine Elektrode eines Lichtbogenofens
IT1242380B (it) * 1990-07-23 1994-03-04 Danieli Off Mecc Procedimento e dispositivo per il controllo della forza applicata sui bracci porta elettrodi del forno elettrico ad arco
DE4131044A1 (de) * 1991-09-18 1993-03-25 Flohe Gmbh & Co Bestandteil eines elektrodentragarms bildende einspannung fuer die elektrode
JPH05258858A (ja) * 1992-03-13 1993-10-08 Daido Steel Co Ltd 電極支持装置
DE9206611U1 (de) * 1992-05-15 1992-07-16 Kark, Uwe, 2104 Hamburg Elektrodentragarm für einen elektrischen Lichtbogenofen
DE19526161C2 (de) * 1995-07-11 1997-05-07 Mannesmann Ag Verfahren und Vorrichtung zur Steuerung des Elektrodenhubes
JPH10291105A (ja) * 1997-04-18 1998-11-04 Toyota Motor Corp 工具クランプ力測定装置
DE10261162B4 (de) * 2002-12-20 2016-03-10 Arndt Dung Einspannung für die auswechselbare Elektrode eines Elektroschmelzaggregats

Also Published As

Publication number Publication date
EP1432291A1 (fr) 2004-06-23
DE10311426B4 (de) 2016-06-16
DE10311426A1 (de) 2004-09-23
ES2302893T3 (es) 2008-08-01
ATE390032T1 (de) 2008-04-15
DE50309406D1 (de) 2008-04-30

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