EP0122844A1 - Blast furnace tapping apparatus by withdrawing the tapping bar - Google Patents

Blast furnace tapping apparatus by withdrawing the tapping bar Download PDF

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Publication number
EP0122844A1
EP0122844A1 EP84400663A EP84400663A EP0122844A1 EP 0122844 A1 EP0122844 A1 EP 0122844A1 EP 84400663 A EP84400663 A EP 84400663A EP 84400663 A EP84400663 A EP 84400663A EP 0122844 A1 EP0122844 A1 EP 0122844A1
Authority
EP
European Patent Office
Prior art keywords
bar
hole
frame
tapping
blast furnace
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.)
Granted
Application number
EP84400663A
Other languages
German (de)
French (fr)
Other versions
EP0122844B1 (en
Inventor
Bernard Marinello
Christian Zurdo
Hubert Bohr
François Glarey
Michel Gouriou
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.)
LORRAINE ET MERIDIONALE DE LAMINAGE CONTINU - SOLMER Ste
Original Assignee
LORRAINE ET MERIDIONALE DE LAMINAGE CONTINU - SOLMER Ste
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 LORRAINE ET MERIDIONALE DE LAMINAGE CONTINU - SOLMER Ste filed Critical LORRAINE ET MERIDIONALE DE LAMINAGE CONTINU - SOLMER Ste
Publication of EP0122844A1 publication Critical patent/EP0122844A1/en
Application granted granted Critical
Publication of EP0122844B1 publication Critical patent/EP0122844B1/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes

Definitions

  • the invention relates to a bar extraction device.
  • the known withdrawal devices include jaws for gripping the bar.
  • the bar In order for the bar to be properly held in the jaws, it is necessary to carry out a partial prior machining thereof: this involves manual intervention by the personnel.
  • the object of the invention is to unblock by a means free from the aforementioned drawbacks.
  • the means according to the invention lies in a bar extraction device, comprising: a frame, a means of fixing the frame on a support machine movable at least substantially in the two directions of the axis of the bar, a means for wedging the bar comprising a hole with a diameter greater than that of the bar, formed in a tilting part articulated on an axis of the frame.
  • the tilting part is articulated on a horizontal axis of the frame.
  • the tilting part is suspended by gravity from a horizontal axis of the frame.
  • the tilting part has a conical front hole.
  • the tilting part comprises a rear stop cooperating with the hole for wedging the bar.
  • the device comprises a protective shield.
  • the device of the invention is particularly intended to adapt to the nose of a butcher machine.
  • Figure 1 shows the nose 1 of a conventional butcher machine, such as that marketed by the Luxembourg company Paul WURTH.
  • the nose 1 of the butcher machine comprises the cylindrical extension 2 which is connected by the conical mouth 3 to the cylindrical clay chamber 4, of diameter greater than that of the extension.
  • a vertical ear 5 on the mouth is used for handling.
  • Figure 2 shows the bottom of the blast furnace 6, the liquid iron bath 7, the extracting bar 8 oriented slightly oblique above the horizontal.
  • the bar extraction device 9 comprises a frame 10, a fixing means 11 of the frame on the nose of the capping machine, and a wedging means 12 of the bar.
  • the frame 10 essentially consists of an arm 13 provided at one end with a fork 14 which can be articulated on the ear 5 of the nose of the capper thanks to a pin.
  • the arm 13 has in the middle a hole 15 allowing the passage of a pin 16 on which the fork 17 of a collar pivots 18.
  • Three legs 19 are welded on the front of the collar 18 and allow insertion from above a rectangular push plate 20.
  • the end of the arm 13 opposite the fork 14 also carries a fork 21 allowing the passage of a pin 22 on which the wedging means 12 is articulated.
  • This comprises a plate 23 pierced with a cylindrical hole 24.
  • the plate 23 can swing freely forward, but is blocked rearward by the retainer 27.
  • the front part of the device 9 carries a protective shield 28 fixed obliquely.by triangular stays 29 on the fork 21 and only serving in the event of the machine not stopping to avoid damaging the plating of the tap hole.
  • the arm 13 carries a handling lug 30.
  • the collar 18 is mounted on the front of the capper, then the push plate 20.
  • the arm 13 is mounted, which is assembled with the capper and the collar. Finally, the plate 23 which is suspended vertically is mounted.
  • the capper is then moved back in the opposite direction indicated by arrow 32 (fig. 3).
  • the wedging piece 12 rocks and comes to wedge the bar between the lower front part of the hole 24 and the rear extension 26.
  • the slow continued recoil of the capper causes the extraction of the bar 8, and the melting of the blast furnace can flow right out of the bar.
  • the entire device is easy to handle; its weight is of the order of a hundred kilograms, and its size of 760 x 600 x 350 mm 3 in an exemplary embodiment.
  • the diameter of the hole 24 is 60 to 65mm to leave sufficient play for correct engagement of the bar.
  • the axis of the hole 24 of the part 12 is 10 mm lower than the axis of the extension 2.
  • the part 26 has been provided to better hold the bar in the hole 24. However, if one does not want to recover the bar, in order to avoid handling of a red-heated part, the part 26 can be eliminated.
  • the diameter of the hole is then 65mm, preferably 60mm, and the bar is lost: it can fall, after extraction, into the channel located near the capping machine, and disappear in the liquid iron which flows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

1. Device for extracting a bar (8) of the type comprising : a frame (10) means (18, 14) for securing the frame on a supporting machine movable at least in the two directions (31, 32) of the axis of the bar (8), means (12) for wedging in the bar (8), comprising a hole (24) to allow the bar through, said hole being formed in a pivotal part (12, 33) hinged on a pin (22) of the frame (10), characterized in that the hole (24) has a set diameter greater than that of the bar (8), and the mobility of the securing means (18, 24) cooperates with the pivotal wedging means (12) in order to wedge the bar (8) in position by relative pivoting movement of the hole (24) with respect to the bar (8).

Description

L'invention concerne un dispositif d'extraction de barre.The invention relates to a bar extraction device.

On sait que le débouchage du trou de coulée d'un haut-fourneau comprend souvent l'utilisation d'une barre perdue traversant le bouchon, et mise en place généralement à l'aide d'une perforatrice pneumatique. Il s'agit d'extraire cette barre, pour dégager le trou de coulée, et on emploie jusqu'à présent des dispositifs de retrait spéciaux. Ces dispositifs présentent l'inconvénient de constituer des machines à part entière, qui s'ajoutent à celles déjà nécessaires (perforatrices, bou- cheuses) et encombrent la halle de coulée.It is known that the unblocking of the taphole of a blast furnace often includes the use of a lost bar passing through the plug, and generally put in place using a pneumatic perforator. This is to extract this bar, to clear the tap hole, and so far special removal devices have been used. These devices have the disadvantage of constituting fully-fledged machines, which are added to those already necessary (perforators, cappers) and clutter the hall.

D'autre part, les dispositifs de retrait connus comportent des mors pour saisir la barre. Afin que la barre soit bien maintenue dans les mors, il est nécessaire de procéder à un usinage partiel préalable de celle-ci : cela entraîne une intervention manuelle du personnel.On the other hand, the known withdrawal devices include jaws for gripping the bar. In order for the bar to be properly held in the jaws, it is necessary to carry out a partial prior machining thereof: this involves manual intervention by the personnel.

Le but de l'invention est de procéder à un débouchage par un moyen exempt des inconvénients précités.The object of the invention is to unblock by a means free from the aforementioned drawbacks.

Le moyen conforme à l'invention tient dans un dispositif d'extraction de barre, comprenant : un bâti, un moyen de fixation du bâti sur une machine de support mobile au moins sensiblement dans les deux directions de l'axe de la barre, un moyen de coincement de la barre comportant un trou de diamètre supérieur à celui de la barre, formé dans une pièce basculante articulée sur un axe du bâti.The means according to the invention lies in a bar extraction device, comprising: a frame, a means of fixing the frame on a support machine movable at least substantially in the two directions of the axis of the bar, a means for wedging the bar comprising a hole with a diameter greater than that of the bar, formed in a tilting part articulated on an axis of the frame.

Avantageusement, la pièce basculante est articulée sur un axe horizontal du bâti.Advantageously, the tilting part is articulated on a horizontal axis of the frame.

Avantageusement, la pièce basculante est suspendue par gravité à un axe horizontal du bâti.Advantageously, the tilting part is suspended by gravity from a horizontal axis of the frame.

Avantageusement, la pièce basculante comporte un avant trou conique.Advantageously, the tilting part has a conical front hole.

Avantageusement, la pièce basculante comporte une butée arrière coopérant avec le trou pour le coincement de la barre.Advantageously, the tilting part comprises a rear stop cooperating with the hole for wedging the bar.

Avantageusement, le dispositif comporte un bouclier de protection.Advantageously, the device comprises a protective shield.

Le dispositif de l'invention est tout particulièrement destiné à s'adapter au nez d'une machine à boucher.The device of the invention is particularly intended to adapt to the nose of a butcher machine.

L'invention sera mieux comprise grâce à la description suivante d'un mode particulier de réalisation. Il sera fait référence aux dessins annexés sur lesquels :

  • - la figure 1 est une vue schématique du nez d'une machine à boucher classique.
  • - les figures 2 et 3 représentent le dispositif de l'invention monté sur le nez de la boucheuse lors des phases repectives d'approche et de retrait de 1 barre.
  • - les figures 4 et 5 sont respectivement des vues de face et de dessus du dispositif de l'invention.
  • - les figures 6, 7, 8 sont respectivement des vues de côté de certains éléments du dispositif de l'invention.
The invention will be better understood from the following description of a particular embodiment. Reference will be made to the appended drawings in which:
  • - Figure 1 is a schematic view of the nose of a conventional butcher machine.
  • - Figures 2 and 3 show the device of the invention mounted on the nose of the capper during the respective phases of approach and removal of 1 bar.
  • - Figures 4 and 5 are respectively front and top views of the device of the invention.
  • - Figures 6, 7, 8 are respectively side views of certain elements of the device of the invention.

La figure 1 montre le nez 1 d'une machine à boucher classique, telle que celle commercialisée par la société luxembourgeoise Paul WURTH. Le nez 1 de la machine à boucher comprend l'allonge cylindrique 2 qui se raccorde par la bouche conique 3 à la chambre cylindrique à argile 4, de diamètre supérieur à celui de l'allonge. Une oreille verticale 5 sur la bouche sert à la manutention.Figure 1 shows the nose 1 of a conventional butcher machine, such as that marketed by the Luxembourg company Paul WURTH. The nose 1 of the butcher machine comprises the cylindrical extension 2 which is connected by the conical mouth 3 to the cylindrical clay chamber 4, of diameter greater than that of the extension. A vertical ear 5 on the mouth is used for handling.

La figure 2 montre le bas du haut-fourneau 6, le bain de fonte liquide 7, la barre à extraire 8 orientée en légère oblique au dessus de l'horizontale.Figure 2 shows the bottom of the blast furnace 6, the liquid iron bath 7, the extracting bar 8 oriented slightly oblique above the horizontal.

Le dispositif d'extraction de barre 9 comporte un bâti 10, un moyen de fixation 11 du-bâti sur le nez de la machine à boucher, et un moyen de coincement 12 de la barre.The bar extraction device 9 comprises a frame 10, a fixing means 11 of the frame on the nose of the capping machine, and a wedging means 12 of the bar.

Le bâti 10 se compose essentiellement d'un bras 13 muni à une extrémité d'une fourche 14 qui peut venir s'articuler sur l'oreille 5 du nez de la boucheuse grâce à une goupille.The frame 10 essentially consists of an arm 13 provided at one end with a fork 14 which can be articulated on the ear 5 of the nose of the capper thanks to a pin.

Le bras 13 comporte vers le milieu un trou 15 permettant le passage d'une goupille 16 sur laquelle pivote la fourche 17 d'un collier 18. Trois pattes 19 sont soudées sur l'avant du collier 18 et permettent d'insérer par le haut une plaque de poussée rectangulaire 20. Quand le dispositif 9 est fixé sur le nez 1 de la boucheuse, le collier 18 enserre la bouche 3 et la plaque de poussée 20 protège l'extrémité de l'allonge 2.The arm 13 has in the middle a hole 15 allowing the passage of a pin 16 on which the fork 17 of a collar pivots 18. Three legs 19 are welded on the front of the collar 18 and allow insertion from above a rectangular push plate 20. When the device 9 is fixed on the nose 1 of the capper, the collar 18 surrounds the mouth 3 and the push plate 20 protects the end of the extension 2.

L'extrémité du bras 13 opposée à la fourche 14 porte également une fourche 21 permettant le passage d'une goupille 22 sur laquelle s'articule le moyen de coincement 12. Celui-ci comporte une plaque 23 percée d'un trou cylindrique 24. Un avant-trou conique 25 précède le trou 24, tandis qu'une butée arrière 26 prolonge le trou à sa partie supérieure. La plaque 23 peut basculer librement vers l'avant, mais est bloquée vers l'arrière par l'arrêtoir 27.The end of the arm 13 opposite the fork 14 also carries a fork 21 allowing the passage of a pin 22 on which the wedging means 12 is articulated. This comprises a plate 23 pierced with a cylindrical hole 24. A conical pilot hole 25 precedes the hole 24, while a rear stop 26 extends the hole at its upper part. The plate 23 can swing freely forward, but is blocked rearward by the retainer 27.

La partie avant du dispositif 9 porte un bouclier de protection 28 fixé obliquement.par des étais triangulaires 29 sur la fourche 21 et ne servant qu'en cas de non-arrêt de la machine pour éviter d'abimer le placage du trou de coulée.The front part of the device 9 carries a protective shield 28 fixed obliquely.by triangular stays 29 on the fork 21 and only serving in the event of the machine not stopping to avoid damaging the plating of the tap hole.

Le bras 13 porte une oreille de manutention 30.The arm 13 carries a handling lug 30.

L'utilisation du dispositif de l'invention se déroule comme suit:The use of the device of the invention takes place as follows:

Un monte sur l'avant dela boucheuse le collier 18, puis la plaque de poussée 20. On monte le bras 13 qu'on assemble à la boucheuse et au collier. On monte enfin, la plaque 23 qui est suspendue verticalement.The collar 18 is mounted on the front of the capper, then the push plate 20. The arm 13 is mounted, which is assembled with the capper and the collar. Finally, the plate 23 which is suspended vertically is mounted.

On tourne la machine vers le trou de coulée, et on l'avance dans la direction indiquée par la flèche 31 (fig. 2). La barre 8 s'engage dans l'avant-trou conique 25, puis dans le trou 24 et son prolongement 26 et vient éventuellement buter contre la plaque de poussée 20.We turn the machine towards the tap hole, and we advance it in the direction indicated by arrow 31 (fig. 2). The bar 8 engages in the conical pilot hole 25, then in the hole 24 and its extension 26 and possibly abuts against the thrust plate 20.

On recule alors la boucheuse dans la direction contraire indiquée par la flèche 32 (fig. 3). La pièce de coincement 12 bascule et vient coincer la barre entre la partieavant inférieure du trou 24 et le prolongement arrière 26. La lente poursuite de recul de la boucheuse entraîne l'extraction de la barre 8, et, la fonte du haut-fourneau peut couler dès la sortie de la barre.The capper is then moved back in the opposite direction indicated by arrow 32 (fig. 3). The wedging piece 12 rocks and comes to wedge the bar between the lower front part of the hole 24 and the rear extension 26. The slow continued recoil of the capper causes the extraction of the bar 8, and the melting of the blast furnace can flow right out of the bar.

L'ensemble du dispositif est facile à manipuler; son poids est de l'ordre d'une centaine de kilogrammes, et son encombrement de 760 x 600 x 350 mm3 dans un exemple de réalisation.The entire device is easy to handle; its weight is of the order of a hundred kilograms, and its size of 760 x 600 x 350 mm 3 in an exemplary embodiment.

Afin d'assurer une bonne saisie de la barre 8, d'un diamètre de 50 mm par exemple, le diamètre du trou 24 est de 60 à 65mm pour laisser un jeu suffisant pour un engagement correct de la barre.To ensure a good grip of the bar 8, with a diameter of 50 mm for example, the diameter of the hole 24 is 60 to 65mm to leave sufficient play for correct engagement of the bar.

Pour tenir compte du fait que la barre a tendance à fléchir avec la chaleur, l'axe du trou 24 de la pièce 12 est plus bas de 10 mm que l'axe de l'allonge 2.To take account of the fact that the bar tends to flex with heat, the axis of the hole 24 of the part 12 is 10 mm lower than the axis of the extension 2.

On notera aussi que le basculement et le coincement de la barre sont automatiques étant donné l'inclinaison de la machine.It will also be noted that the tilting and jamming of the bar are automatic given the inclination of the machine.

La pièce 26 a été prévue pour mieux maintenir la barre dans le trou 24. Toutefois, si on ne veut pas récupérer la barre, afin d'éviter la manutention d'une pièce chauffée au rouge, la pièce 26 peut être supprimée. Le diamètre du trou est alors de 65mm de préférence à 60mm, et la barre est perdue : elle peut tomber, après extraction, dans la rigole située près de la machine à boucher, et disparaître dans la fonte liquide qui s'écoule.The part 26 has been provided to better hold the bar in the hole 24. However, if one does not want to recover the bar, in order to avoid handling of a red-heated part, the part 26 can be eliminated. The diameter of the hole is then 65mm, preferably 60mm, and the bar is lost: it can fall, after extraction, into the channel located near the capping machine, and disappear in the liquid iron which flows.

Claims (7)

1. Dispositif d'extraction de barre (8) , caractérisé en ce qu'il comprend : - un bâti (13), - un moyen de fixation (18,14) du bâti sur une machine de support mobile au moins dans les deux directions (31,32) de l'axe de la barre (8), - un moyen de coincement (12) de la barre (8), comportant un trou (24) de diamètre supérieur à celui de la barre, formé dans une pièce basculante (23) articulée sur un axe (22) du bâti (13). 1. Bar extraction device (8), characterized in that it comprises: - a frame (13), - a means of fixing (18,14) of the frame on a mobile support machine at least in the two directions (31,32) of the axis of the bar (8), - A wedging means (12) of the bar (8), comprising a hole (24) of diameter greater than that of the bar, formed in a tilting part (23) articulated on an axis (22) of the frame (13) . 2. Dispositif selon la revendication 1, caractérisé en ce que la pièce basculante (23) est articulée sur un axe horizontal (22) du bâti (13).2. Device according to claim 1, characterized in that the tilting part (23) is articulated on a horizontal axis (22) of the frame (13). 3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la pièce basculante (23) est suspendue par gravité à un axe horizontal (22) du bâti (13).3. Device according to any one of claims 1 or 2, characterized in that the tilting part (23) is suspended by gravity from a horizontal axis (22) of the frame (13). 4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la pièce basculante (23) comporte un avant-trou conique (25).4. Device according to any one of claims 1 to 3, characterized in that the tilting part (23) comprises a conical pilot hole (25). 5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la pièce basculante (23) comporte une butée arrière (26) coopérant avec le trou (24) pour le coincement de la barre (8).5. Device according to any one of claims 1 to 4, characterized in that the tilting part (23) comprises a rear stop (26) cooperating with the hole (24) for wedging the bar (8). 6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comporte un bouclier de protection.6. Device according to any one of claims 1 to 5, characterized in that it comprises a protective shield. 7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il s'adapte au nez (1) de la machine à boucher prévue pour le haut-fourneau.7. Device according to any one of claims 1 to 6, characterized in that it adapts to the nose (1) of the butcher machine provided for the blast furnace.
EP19840400663 1983-04-12 1984-04-04 Blast furnace tapping apparatus by withdrawing the tapping bar Expired EP0122844B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8305962A FR2544332B1 (en) 1983-04-12 1983-04-12 DEVICE FOR CLEARING A BLAST FURNACE BY BAR EXTRACTION
FR8305962 1983-04-12

Publications (2)

Publication Number Publication Date
EP0122844A1 true EP0122844A1 (en) 1984-10-24
EP0122844B1 EP0122844B1 (en) 1987-07-29

Family

ID=9287766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840400663 Expired EP0122844B1 (en) 1983-04-12 1984-04-04 Blast furnace tapping apparatus by withdrawing the tapping bar

Country Status (3)

Country Link
EP (1) EP0122844B1 (en)
DE (1) DE3465113D1 (en)
FR (1) FR2544332B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589636A (en) * 1983-10-28 1986-05-20 Baeumer Albrecht Grasping device for a rod insertable into and withdrawable from the taphole of metallurgical furnaces, particularly tapping rods
DE3803625A1 (en) * 1988-02-06 1989-08-17 Dango & Dienenthal Maschbau METHOD AND DEVICE FOR OPENING THE STITCH HOLE OF OEFEN
US5039068A (en) * 1988-04-06 1991-08-13 Paul Wurth S.A Machine for drilling tapholes of a shaft furnace

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1546952A (en) * 1967-06-07 1968-11-22 Gardner Denver Co Probe rod centering device
GB1503660A (en) * 1975-08-20 1978-03-15 Victor Products Ltd Drilling machines
LU82943A1 (en) * 1980-11-17 1981-03-26 Wurth Anciens Ets Paul GUIDE AND SUPPORT HEAD OF A DRILLING ROD OF THE CASTING HOLE OF A TANK OVEN AND DRILLER PROVIDED WITH SUCH A HEAD
GB2095381A (en) * 1981-03-21 1982-09-29 Dango & Dienenthal Maschbau Tap hole drilling machine
EP0064645A1 (en) * 1981-05-05 1982-11-17 Paul Wurth S.A. Guiding and positioning mechanism for the drill hammer of the taphole in a shaft furnace, and drilling device provided with this mechanism
EP0064644A1 (en) * 1981-05-05 1982-11-17 Paul Wurth S.A. Guiding and positioning mechanism for the drill hammer of the taphole in a shaft furnace, and drilling device provided with this mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1546952A (en) * 1967-06-07 1968-11-22 Gardner Denver Co Probe rod centering device
GB1503660A (en) * 1975-08-20 1978-03-15 Victor Products Ltd Drilling machines
LU82943A1 (en) * 1980-11-17 1981-03-26 Wurth Anciens Ets Paul GUIDE AND SUPPORT HEAD OF A DRILLING ROD OF THE CASTING HOLE OF A TANK OVEN AND DRILLER PROVIDED WITH SUCH A HEAD
GB2095381A (en) * 1981-03-21 1982-09-29 Dango & Dienenthal Maschbau Tap hole drilling machine
EP0064645A1 (en) * 1981-05-05 1982-11-17 Paul Wurth S.A. Guiding and positioning mechanism for the drill hammer of the taphole in a shaft furnace, and drilling device provided with this mechanism
EP0064644A1 (en) * 1981-05-05 1982-11-17 Paul Wurth S.A. Guiding and positioning mechanism for the drill hammer of the taphole in a shaft furnace, and drilling device provided with this mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 1, no. 96, 30 août 1977, page 2551M77; & JP-A-52 036 854 (SAKURA KOGYO K.K.) 22-03-1977 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589636A (en) * 1983-10-28 1986-05-20 Baeumer Albrecht Grasping device for a rod insertable into and withdrawable from the taphole of metallurgical furnaces, particularly tapping rods
DE3803625A1 (en) * 1988-02-06 1989-08-17 Dango & Dienenthal Maschbau METHOD AND DEVICE FOR OPENING THE STITCH HOLE OF OEFEN
AU603726B2 (en) * 1988-02-06 1990-11-22 Dango & Dienenthal Maschinenbau Gmbh Process and apparatus for opening tapholes of furnaces
US5039068A (en) * 1988-04-06 1991-08-13 Paul Wurth S.A Machine for drilling tapholes of a shaft furnace

Also Published As

Publication number Publication date
DE3465113D1 (en) 1987-09-03
FR2544332A1 (en) 1984-10-19
FR2544332B1 (en) 1985-08-09
EP0122844B1 (en) 1987-07-29

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