EP0128432A2 - Stichlochbohrmaschine für Schachtöfen - Google Patents

Stichlochbohrmaschine für Schachtöfen Download PDF

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Publication number
EP0128432A2
EP0128432A2 EP84105974A EP84105974A EP0128432A2 EP 0128432 A2 EP0128432 A2 EP 0128432A2 EP 84105974 A EP84105974 A EP 84105974A EP 84105974 A EP84105974 A EP 84105974A EP 0128432 A2 EP0128432 A2 EP 0128432A2
Authority
EP
European Patent Office
Prior art keywords
support
mount
machine according
percussion instrument
carriage
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
EP84105974A
Other languages
English (en)
French (fr)
Other versions
EP0128432A3 (en
EP0128432B1 (de
Inventor
Pierre Mailliet
Charles Tarducci
Henri Radoux
Guy Thillen
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT84105974T priority Critical patent/ATE44548T1/de
Publication of EP0128432A2 publication Critical patent/EP0128432A2/de
Publication of EP0128432A3 publication Critical patent/EP0128432A3/fr
Application granted granted Critical
Publication of EP0128432B1 publication Critical patent/EP0128432B1/de
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 present invention relates to a machine for drilling a taphole of a shaft furnace designed for implementing a method according to which the closing and opening of the taphole respectively comprise a setting operation and a extraction operation of a piercing rod, which is abandoned in the mass of the taphole between two successive castings, and which comprises a mount mounted at the free end of a support arm, a percussion instrument sliding along of said carriage under the action of a motor, a device for coupling the piercing rod to the percussion instrument, as well as a means for guiding and supporting the piercing rod provided at the front end of the lookout.
  • the object of the present invention is to provide a new machine for drilling a tap hole from a shaft furnace, the control of which is carried out essentially by hydraulic means and which is capable of operating according to the conventional drilling method and according to the new drilling process.
  • the invention provides a machine of the type described in the preamble which is essentially characterized in that said motor is a hydraulic motor powerful enough to extract the piercing rod without the assistance of the percussion instrument and in what there is provided means allowing the lookout to bear on the wall of the oven during extraction under the action of said motor.
  • the percussion instrument becomes a simple uni-directional striker which, in addition to the advantage of being able to be driven hydraulically, has the advantage of being substantially shorter than pneumatic bi-directional strikers.
  • Said means serving to support the lookout are preferably simply a male support element and a female support element provided respectively on the wall of the oven and on the lookout or vice versa.
  • these support means can be constituted by elements similar to those proposed in patent application DE-A-2815730. However, while in this patent application these elements exclusively had a guiding and stabilizing function, the elements according to the present invention have, above all, a supporting function and, incidentally, a guiding function.
  • the support element provided on the mount is integral with the latter, while in a second embodiment the support element is part of a support integral with the end free of the carrying arm, the carriage being suspended by means of slides, slidingly on the support and connected to the latter by means of a hydraulic cylinder whose action causes a translation of the carriage relative to the support and on the supporting arm.
  • the reference 10 represents a part of the wall of a blast furnace which is crossed by a piercing rod 12 which, after its extraction from the position shown, frees a tap hole 16 to allow the flow of the molten iron in a pouring channel represented by 14.
  • the inner end of the rod 16 has been shown in broken lines since this part has been consumed in the molten material.
  • the reference 18 represents the mounting of the drilling machine, this mounting being carried by the end of a support arm 20 designed to pivot around a main pivot not shown.
  • a working tool 22, provided with a coupling device 24 with the piercing rod 12 can slide along this carriage under the action of an endless drive chain 26, in turn driven by a motor. 28.
  • the reference 30 represents a guide and support head whose essential function is to support the piercing rod 12 when it is no longer or not yet supported in the tap hole.
  • the working tool 22 has hitherto included a striker which can strike both forwards and backwards and the motor 28 ensuring the translation of the working tool 22 was a pneumatic motor.
  • the duality between these two conditions means that if any one is considered a cause, the other is the consequence.
  • the present invention makes it possible to get rid of this constraint by using a hydraulic motor 28 and by taking advantage of the increased power of such a motor to give up the rear striker.
  • the piercing rod 12 is therefore extracted under the sole action of the traction of the working tool 22 during its retraction by the chain 26 and the motor 28.
  • the pulling force must be at least five tonnes.
  • the proposal of the present invention allows, by eliminating a direction of percussion, a reduction in the length of the working tool 22. This allows, either a shortening of the mount 18, an elongation of the tap hole 16, both of which can be considered as an advantage.
  • the elimination of percussion during the extraction of the piercing rod 16 makes it possible, in addition, the elimination of vibrations and consequently, reduces the stresses at the level of the coupling device 24. In fact, the extraction by percussion there is always a risk of unscrewing the automatic clamp from the coupling device from the rod to the striker and damaging the male and female threads by repeated hammering each time the tap hole is opened.
  • a device which enables the carriage 18 to press against the wall 10 of the oven during the extraction phase.
  • the embodiment according to FIG. 1 has, at the front of the carriage 18, a support 34 provided with a finger 36 penetrating into the operative position, in an opening of an arm 32 fixed to the wall from the oven. This version is intended for machines whose trajectory near the operative position is substantially in the direction of the tap hole.
  • Figures 3 to 5 show a very advantageous embodiment in which the mount 18 is not fixed directly to the support arm, not shown, but is slidably suspended on a support 40 which is, in turn, mounted on the end of the support arm and which is designed to form a support on the arm 32.
  • the support for the carriage 18 can be produced simply by two slides 42 on the lower part of the support 40 which allow translation of the carriage 18 relative to the support 40.
  • the translational movement of the carriage 18 relative to the support 40 is caused by a hydraulic cylinder 44 mounted on the support 40 and whose rod 46 is connected to the carriage 18.
  • FIGS. 3 to 5 The purpose of this arrangement and its operation appear from FIGS. 3 to 5.
  • the mount is brought into the position according to FIG. 3, until the support 40 is supported on the arm 32, the rod 46 being retracted, that is to say that the carriage 18 is in the advanced position.
  • the jack 44 is then actuated to move back the carriage 18, the reaction of this thrust from the jack 44 being transmitted by the support 40 on the arm 32.
  • This movement allows the rod 16 to be released in the mass of the tap hole (see figure 4).
  • the piercing rod 16 being thus released it can be extracted easily by making the working tool 22 move back along the carriage 18 under the action of the motor 28 as far as the position illustrated in FIG. 5.
  • the relatively large force required to unlock the rod 16 in the position of Figure 3 is therefore derived from the jack 44 and transmitted directly to the carriage 18, while a much more modest force necessary for the extraction of the rod 16 from the position of FIG. 4 is derived from the motor 28.
  • the embodiment according to Figures 3 to 5 has another extremely important advantage. Indeed, as already indicated previously, the inner end of the piercing rod 16 burns in the molten mass of the furnace, so that the piercing rod is shorter during its extraction compared to what it was during introduction into the tap hole. As a result, when approaching the end of the extraction phase, when the tool 22 reaches the rear end of the mount 18, the front part of the piercing rod 12 is no longer supported by the head 30 and the rod 12 tilt in the pouring channel 14, thus risking causing damage, in particular in the coupling device 24. To remedy this failure, we have proposed, in particular, complicated systems with hooks movable and / or pivotable auxiliaries as described in patent application DE-A-3111260.
  • the stop 50 which is designed to serve as a support for this coupling device is lying.
  • the stop 50 which is fixed under the carriage 18 has the section illustrated in FIG. 6a.
  • the stop 50 is advantageously fixed removably to the carriage and movable along it, so that one can fix its location according to the length of the taphole, and use the stop 50 as a reference during the introduction by advancing the coupling device as far as the stop 50.
  • Figures 7 and 7a show an advantageous variant in which the support and guide head 24 of the previous figures is omitted, and in which the stop 52 is designed so as to fulfill, in addition to its own functions, those of guide and support the drilling rod 12.
  • the stop 50 is designed in the form of a funnel as shown in Figures 7 and 7a. In this case, the advantages previously discussed in connection with the extraction of a partially consumed rod, are even more pronounced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
EP84105974A 1983-06-08 1984-05-25 Stichlochbohrmaschine für Schachtöfen Expired EP0128432B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105974T ATE44548T1 (de) 1983-06-08 1984-05-25 Stichlochbohrmaschine fuer schachtoefen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84855A LU84855A1 (fr) 1983-06-08 1983-06-08 Machine de percage d'un trou de coulee de four a cuve
LU84855 1983-06-08

Publications (3)

Publication Number Publication Date
EP0128432A2 true EP0128432A2 (de) 1984-12-19
EP0128432A3 EP0128432A3 (en) 1986-11-12
EP0128432B1 EP0128432B1 (de) 1989-07-12

Family

ID=19730102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105974A Expired EP0128432B1 (de) 1983-06-08 1984-05-25 Stichlochbohrmaschine für Schachtöfen

Country Status (8)

Country Link
US (1) US4602770A (de)
EP (1) EP0128432B1 (de)
AT (1) ATE44548T1 (de)
AU (1) AU565504B2 (de)
CA (1) CA1217760A (de)
DE (1) DE3478937D1 (de)
LU (1) LU84855A1 (de)
ZA (1) ZA844085B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619036A1 (fr) * 1987-08-04 1989-02-10 Wurth Paul Sa Machine de percage d'un trou de coulee de four a cuve
FR2621264A1 (fr) * 1987-10-06 1989-04-07 Wurth Paul Sa Dispositif de montage d'une pince pour l'accouplement d'une tige de percage du trou de coulee d'un four a cuve a une machine de percage
DE3941405A1 (de) * 1989-01-16 1990-07-19 Wurth Paul Sa Verfahren und vorrichtung zum oeffnen des abstichlockes eines schachtofens
EP0552476A2 (de) * 1992-01-24 1993-07-28 Paul Wurth S.A. Schachtofen-Abstichlochbohrer
WO2010094571A1 (de) * 2009-02-18 2010-08-26 Tmt Tapping-Measuring-Technology Gmbh Stichlochbohrmaschine für metallurgische behälter, insbesondere öfen mit schmelzflüssigem inhalt
CN114606353A (zh) * 2020-12-09 2022-06-10 本钢板材股份有限公司 一种开铁口机钻杆夹持机械手

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU87190A1 (fr) * 1988-04-06 1989-11-14 Wurth Paul Sa Machine de percage de trous de coulee d'un four a cuve
US5069430A (en) * 1990-10-26 1991-12-03 Woodings Industrial Corporation Blast furnace tap hole drill with centralizing drill rod support
ATE140980T1 (de) * 1991-10-31 1996-08-15 Wurth Paul Sa Schachtofen-abstichlochbohrer
LU88060A1 (fr) * 1992-01-27 1993-08-17 Paul Wurth S.A. Machine de percage d'un trou de coulee d'un four a cuve
LU88120A1 (fr) * 1992-05-27 1993-12-06 Paul Wurth S.A. Procede facilitant l'introduction d'une tige de percage dans un trou de coulee d'un four a cuve et pince speciale pour la mise en oeuvre de ce procede
US6110415A (en) * 1997-09-26 2000-08-29 Fmc Corporation Device for opening furnace tap holes
US6299830B2 (en) 1998-09-22 2001-10-09 Meltran, Inc. Apparatus and method for tapping a furnace

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935038U (de) * 1964-08-17 1966-03-24 Dango & Dienenthal K G Stichlochbohrmaschine.
DE2815730A1 (de) * 1977-06-08 1978-12-21 Wurth Paul Sa Stabilisierungsvorrichtung fuer die werkzeuglafette einer stichlochbohrmaschine
EP0025423A1 (de) * 1979-09-05 1981-03-18 Atlas Copco France S.A. Stichlochbohrapparat für Hochöfen
EP0052248A1 (de) * 1980-11-17 1982-05-26 Paul Wurth S.A. System aus Modulteilen für Drehverbindungen, Schwenkarm mit diesen Teilen und die Verwendung für Schachtöfen-Stichlochbohrmaschinen
DE3111260A1 (de) * 1981-03-21 1982-09-30 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Stichlochbohrmaschine
JPS5839711A (ja) * 1981-09-01 1983-03-08 Nisshin Steel Co Ltd 高炉出銑口開孔方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB993365A (en) * 1962-03-17 1965-05-26 Westinghouse Air Brake Co Blast furnace tapping rig and method
US3232360A (en) * 1963-11-04 1966-02-01 Mobile Drilling Co Inc Bore positioning method and apparatus
SU854989A1 (ru) * 1979-06-20 1981-08-25 Ленинградский государственный институт по проектированию металлургических заводов Машина дл вскрыти чугунной летки доменной печи
LU82943A1 (fr) * 1980-11-17 1981-03-26 Wurth Anciens Ets Paul Tete de guidage et de support d'une tige de percage du trou de coulee d'un four a cuve et perceuse pourvue d'une telle tete
LU83336A1 (fr) * 1981-05-05 1983-03-24 Wurth Paul Sa Dispositif de centrage et de guidage d'une tige de percage du trou de coulee d'un four a cuve et perceuse pourvue d'un tel dispositif
US4431171A (en) * 1982-03-04 1984-02-14 Bailey Industrial Products, Inc. Apparatus for opening the tap hole of a metallurgical furnace

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935038U (de) * 1964-08-17 1966-03-24 Dango & Dienenthal K G Stichlochbohrmaschine.
DE2815730A1 (de) * 1977-06-08 1978-12-21 Wurth Paul Sa Stabilisierungsvorrichtung fuer die werkzeuglafette einer stichlochbohrmaschine
EP0025423A1 (de) * 1979-09-05 1981-03-18 Atlas Copco France S.A. Stichlochbohrapparat für Hochöfen
EP0052248A1 (de) * 1980-11-17 1982-05-26 Paul Wurth S.A. System aus Modulteilen für Drehverbindungen, Schwenkarm mit diesen Teilen und die Verwendung für Schachtöfen-Stichlochbohrmaschinen
DE3111260A1 (de) * 1981-03-21 1982-09-30 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Stichlochbohrmaschine
JPS5839711A (ja) * 1981-09-01 1983-03-08 Nisshin Steel Co Ltd 高炉出銑口開孔方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 118 (C-167)[1263], 21 mai 1983; & JP-A-58 039 711 (NITSUSHIN SEIKOU) 08-03-1983 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825100A1 (de) * 1987-08-04 1989-02-16 Wurth Paul Sa Vorrichtung zum oeffnen des abstichloches eines schachtofens
FR2619036A1 (fr) * 1987-08-04 1989-02-10 Wurth Paul Sa Machine de percage d'un trou de coulee de four a cuve
FR2621264A1 (fr) * 1987-10-06 1989-04-07 Wurth Paul Sa Dispositif de montage d'une pince pour l'accouplement d'une tige de percage du trou de coulee d'un four a cuve a une machine de percage
BE1004162A3 (fr) * 1987-10-06 1992-10-06 Wurth Paul Sa Dispositif de montage d'une pince pour l'accouplement d'une tige de percage du trou de coulee d'un four a cuve a une machine de percage.
DE3941405C2 (de) * 1989-01-16 1999-03-25 Wurth Paul Sa Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schachtofens
DE3941405A1 (de) * 1989-01-16 1990-07-19 Wurth Paul Sa Verfahren und vorrichtung zum oeffnen des abstichlockes eines schachtofens
EP0379018A2 (de) * 1989-01-16 1990-07-25 Paul Wurth S.A. Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens
EP0379018A3 (de) * 1989-01-16 1991-09-11 Paul Wurth S.A. Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens
US5192489A (en) * 1989-01-16 1993-03-09 Paul Wurth S.A. Device for opening the taphole of a shaft furnace
EP0552476A2 (de) * 1992-01-24 1993-07-28 Paul Wurth S.A. Schachtofen-Abstichlochbohrer
EP0552476A3 (en) * 1992-01-24 1993-12-29 Wurth Paul Sa Apparatus for opening the taphole of a shaft furnace
BE1006264A3 (fr) * 1992-01-24 1994-07-05 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
US5338013A (en) * 1992-01-24 1994-08-16 Paul Wurth S.A. Machine for piercing a taphole for a shaft furnace
FR2687689A1 (fr) * 1992-01-24 1993-08-27 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
WO2010094571A1 (de) * 2009-02-18 2010-08-26 Tmt Tapping-Measuring-Technology Gmbh Stichlochbohrmaschine für metallurgische behälter, insbesondere öfen mit schmelzflüssigem inhalt
CN114606353A (zh) * 2020-12-09 2022-06-10 本钢板材股份有限公司 一种开铁口机钻杆夹持机械手

Also Published As

Publication number Publication date
LU84855A1 (fr) 1985-03-29
ZA844085B (en) 1985-03-27
ATE44548T1 (de) 1989-07-15
EP0128432A3 (en) 1986-11-12
DE3478937D1 (en) 1989-08-17
US4602770A (en) 1986-07-29
CA1217760A (en) 1987-02-10
AU565504B2 (en) 1987-09-17
AU2917884A (en) 1984-12-13
EP0128432B1 (de) 1989-07-12

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