EP0379018A2 - Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens - Google Patents

Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens Download PDF

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Publication number
EP0379018A2
EP0379018A2 EP90100267A EP90100267A EP0379018A2 EP 0379018 A2 EP0379018 A2 EP 0379018A2 EP 90100267 A EP90100267 A EP 90100267A EP 90100267 A EP90100267 A EP 90100267A EP 0379018 A2 EP0379018 A2 EP 0379018A2
Authority
EP
European Patent Office
Prior art keywords
rod
clamp
working tool
carriage
mount
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.)
Withdrawn
Application number
EP90100267A
Other languages
English (en)
French (fr)
Other versions
EP0379018A3 (de
Inventor
Jean Metz
Pierre Mailliet
Henri Radoux
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
Publication of EP0379018A2 publication Critical patent/EP0379018A2/de
Publication of EP0379018A3 publication Critical patent/EP0379018A3/de
Withdrawn legal-status Critical Current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 method of opening the taphole of a shaft furnace by extracting a rod retained in the hardened plugging mass of the taphole using a drilling machine comprising a drilling tool. work with a coupling means at the free end of the rod, movable along a mount which rests on the wall of the oven.
  • the invention also relates to a device for implementing this method.
  • the working tool generally comprises a powerful pneumatic striker.
  • a striker has the drawback that it imposes significant stresses on the equipment, in particular on its coupling device with the rod, which, as a result, is subject to rapid wear and the need for replacement. frequent.
  • a pneumatic striker has the disadvantage of being very noisy.
  • the object of the present invention is to provide a method and a device which make it possible to avoid the above drawbacks and to extract the rod completely using a hydraulic cylinder.
  • the method proposed by the present invention is characterized in that, after having engaged the coupling means on the free end of the rod, the latter is grasped using a forceps which can be moved longitudinally under the action of a hydraulic cylinder, in that the rod is removed with a length corresponding to the stroke of the cylinder and in that this operation is repeated until the rod is completely extracted from the hole casting.
  • the device for implementing this method is characterized by a clamp mounted at the front end of the mount, in axial alignment with the coupling device and movable longitudinally relative to the mount under the action of a hydraulic cylinder mounted thereon.
  • the clamp has an axial channel for the passage of the rod and two symmetrical jaws displaceable obliquely with respect to said channel in the direction of an enlargement or a narrowing thereof.
  • each of the jaws is actuated by the hydraulic fluid of said jack which urges them in the direction of narrowing of said channel and by a spring in the opposite direction.
  • each of the jaws is subjected to the action of a spring which urges them in the direction of a narrowing of said channel.
  • the working tool is slidably mounted on a carriage which is, in turn, slidably mounted on the carriage.
  • FIGS 1 to 8 schematically show a machine designed to open a tap hole of a shaft furnace 20, either by conventional drilling, or, as shown in the figures, by extraction of a rod 22 blocked in the plugging mass hardened 24.
  • the machine comprises a mount 26 carried at the end of a support arm 28, pivoting around a console between the operative position shown in the figures and a garage position away from the tap hole.
  • a working tool 30 is mounted slidingly on a mobile carriage 32, supported, in turn, slidingly on the carriage 26.
  • the reference 34 represents an articulated pipe ensuring the supply of pneumatic or hydraulic fluid to the working tool 30, while by allowing its longitudinal movements along the carriage 26.
  • a means 36 for coupling this tool 30 to the free end of the rod 22 is preferably of the type described in the French patent. No 2520857.
  • the front part of the carriage 32 is designed in the form of a support 38 for the rod 22, when it is only supported by the coupling means 36, as is the case in the position according to FIG. 8.
  • a support 40 which is in contact with the wall of the furnace, to absorb the feedback forces during the extraction of the rod.
  • a hydraulic cylinder 42 At the front of the carriage 26 is, moreover, a hydraulic cylinder 42 whose rod 44 is movable in the longitudinal direction of the carriage 26.
  • a clamp 46 At the end of the piston rod 44 is a clamp 46 , making it possible to grasp the piercing rod 22 and which is represented in two embodiments, in two horizontal sections, in FIGS. 9 and 10.
  • the clamp 46 consists of two symmetrical lateral jaws, only one of which is shown respectively in 48 and 50 in FIGS. 9 and 10.
  • Each of the jaws 48 and 50 consists essentially of a jaw 52 mounted at the end a sliding rod 54, held and guided in a chamber 60 of a support block 56 which forms a unit with the corresponding symmetrical block of the second opposite jaw, not shown.
  • Each of the blocks 56 defines with its half not shown a channel 58 allowing the passage of the rod 22, the part on the right in Figures 9 and 10 is engaged in the taphole of the oven not shown in these figures.
  • the jaws 52 can be displaced obliquely with respect to the rod 22 so as to be made integral with the latter by penetration of an internal acute edge 52a into the surface of the rod 22 or to be released therefrom by removing the jaw and penetrating their rod 54 into the chambers 60.
  • FIGS. 9 and 10 are distinguished from each other only by the means used to actuate the jaws 52 with a view to pinching the rod 22.
  • the rod 54 of the jaw 52 is subjected to the action of a double helical spring 62 which acts in the direction of closing the clamp 46 by pushing the jaw 52 to the right on FIG. 9. Consequently, when the clamp 46 pulls on the rod 22 under the action of the jack 42 to the left in FIG. 9 and to the right in FIG. 1, it bites into the rod by penetration of the edges 52a in the material of the rod, due to the inclination of the rods 54 relative to the direction of traction of the jack 42.
  • the clamp 46 is actuated pneumatically or hydraulically. Indeed, in this embodiment, the end of the rod 54, opposite that of the jaw 52, is integral with a piston 64.
  • a double helical spring 66 which acts in the direction d 'an opening of the clamp 46 to return the jaw 52 into the block 56.
  • the chamber 60 is connected by a line 68 to the pressure of a pneumatic or hydraulic agent which acts on the head of the piston 64 on the side opposite the spring 66 and against the action of the latter, in the direction of closing the clamp 46.
  • the pipe 68 is connected directly to the hydraulic cylinder 42, rod side 44, so that when the cylinder 42 is pressurized to pull the rod 22, this same pressure is used to close the clamp. This is very advantageous, because the closing force of the clamp 56 is the same as the pulling force on the rod 22, so that the risk of the clamp 46 sliding on the rod 22 is almost zero.
  • clamps 46 are therefore comparable to that of the coupling 36, described in more detail in French patent No 2520857, with the exception that the rod 22 must be able to pass through the clamp 46 axially over its entire length.
  • the working tool 30 is coupled to the rod 22 by closing the clamp of the coupling 36, while the jack 42 is actuated to bring in the piston rod 44.
  • This operation closes automatically the clamp 46, either under the action of the traction of the clamp on the rod 22 according to FIG. 9, or by hydraulic action according to FIG. 10.
  • the jack 42 is dimensioned so that its traction force on the rod 22 is sufficient to release it from the mass 24 of the taphole and to drive it during the retraction of the clamp towards the position in broken lines in FIG. 2.
  • the clamp drives the carriage 32 with the coupling 36 and the tool 30 backwards to the position according to FIG. 3.
  • the jack 42 is then again actuated in the opposite direction to advance the clamp 46 to the position of FIG. 4.
  • the rod 22 is held in the position according to Figure 3, while the open clamp 46 can slide relative to the rod 22.
  • the cylinder 42 is again actuated to move the clamp in the position according to Figure 5 and release the rod 22 of an additional length corresponding to the stroke of the piston rod 44.
  • the tool 30 is pushed back by the rod 22 into the position of FIG. 5, while the carriage 32 remains stationary at the same place on the lookout 26.
  • the clamp has completed its mission, the rod having completely left the mass of the tap hole.
  • the last phase consists in moving the working tool 30 to the starting position, also driving the carriage 32 from the position according to FIG. 7 to the position of FIG. 8 by hooking a stop 70 to the rear of the carriage 32.
  • the rod 22 is also completely disengaged from the clamp 46 and remains held in the support 38 of the carriage 32 while awaiting manual disengagement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Gripping On Spindles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
EP19900100267 1989-01-16 1990-01-08 Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens Withdrawn EP0379018A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87427A LU87427A1 (fr) 1989-01-16 1989-01-16 Procede et dispositif d'ouverture du trou de coulee d'un four a cuve
LU87427 1989-01-16

Publications (2)

Publication Number Publication Date
EP0379018A2 true EP0379018A2 (de) 1990-07-25
EP0379018A3 EP0379018A3 (de) 1991-09-11

Family

ID=19731134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900100267 Withdrawn EP0379018A3 (de) 1989-01-16 1990-01-08 Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens

Country Status (12)

Country Link
US (1) US5192489A (de)
EP (1) EP0379018A3 (de)
JP (1) JP2805368B2 (de)
CN (1) CN1021124C (de)
AU (1) AU626965B2 (de)
BR (1) BR9000204A (de)
CA (1) CA2007184A1 (de)
CZ (1) CZ14090A3 (de)
DE (1) DE3941405C2 (de)
LU (1) LU87427A1 (de)
RU (1) RU1774954C (de)
UA (1) UA15738A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507100A1 (de) * 1991-04-03 1992-10-07 Paul Wurth S.A. Verfahren; Bohrstange und Zwei-Richtungen-Klemmvorrichtung zum Stichlochbohren an Schachtofen
EP0519397A1 (de) * 1991-06-17 1992-12-23 Nippon Steel Corporation Stichlochbohrmaschine
GB2260189A (en) * 1991-09-26 1993-04-07 Dango & Dienenthal Maschbau A tapping for blast furnaces
EP0539752A1 (de) * 1991-10-31 1993-05-05 Paul Wurth S.A. Schachtofen-Abstichlochbohrer
WO1993015231A1 (fr) * 1992-01-27 1993-08-05 Paul Wurth S.A. Machine de perçage d'un trou de coulee d'un four a cuve
FR2687688A1 (fr) * 1992-01-27 1993-08-27 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
FR2687689A1 (fr) * 1992-01-24 1993-08-27 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
EP0574729A1 (de) * 1992-06-17 1993-12-22 Paul Wurth S.A. Schachtofenabstichmaschine
DE4341318C2 (de) * 1992-12-16 2003-11-13 Wurth Paul Sa Kombinierte Maschine zum Öffnen und Verschließen eines Abstichloches eines Schachtofens

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI925647L (fi) * 1992-12-11 1994-06-12 Outokumpu Chrome Oy Kaasuputken syöttölaite sulaa materiaalia sisältävään uuniin
US6110415A (en) * 1997-09-26 2000-08-29 Fmc Corporation Device for opening furnace tap holes
JP3546754B2 (ja) 1999-04-30 2004-07-28 Ｊｆｅスチール株式会社 高炉の短期改修・建設方法およびリング状ブロックの上架装置
KR101167122B1 (ko) 2009-05-26 2012-07-20 현대제철 주식회사 출선구 중심 관리장치
CN102517412B (zh) * 2011-12-22 2014-04-09 宜昌市燕狮科技开发有限责任公司 立柱式重型开铁口机

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893275A (en) * 1957-02-14 1959-07-07 Th Calow & Co Centering device for clamping workpieces
FR2421026A1 (fr) * 1978-03-28 1979-10-26 Glaenzer Spicer Sa Dispositif de support de pieces destinees a subir une operation de brochage ou analogue
LU83917A1 (fr) * 1982-02-03 1983-09-02 Wurth Paul Sa Dispositif d'accouplement d'une tige de percage du trou de coulee d'un four a cuve a l'outil de travail d'une machine de percage
US4502665A (en) * 1982-05-20 1985-03-05 Yoder Lloyd S Apparatus for moving a cylindrical object
LU84855A1 (fr) * 1983-06-08 1985-03-29 Wurth Paul Sa Machine de percage d'un trou de coulee de four a cuve
LU86100A1 (fr) * 1985-09-30 1987-04-02 Wurth Paul Sa Dispositif de deplacement d'une sonde de four a cuve
LU86963A1 (fr) * 1987-08-04 1989-03-08 Wurth Paul Sa Machine de percage d'un trou de coulee de four a cuve
US4842248A (en) * 1987-10-20 1989-06-27 Mclaughlin Mfg. Co., Inc. Hydraulic rod pusher-puller
LU87190A1 (fr) * 1988-04-06 1989-11-14 Wurth Paul Sa Machine de percage de trous de coulee d'un four a cuve

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507100A1 (de) * 1991-04-03 1992-10-07 Paul Wurth S.A. Verfahren; Bohrstange und Zwei-Richtungen-Klemmvorrichtung zum Stichlochbohren an Schachtofen
TR26383A (tr) * 1991-04-03 1995-03-15 Wurth Paul Sa Bir saft firinin akitma deligine bir delme cubu- gunun sokulmasi icin bir proses delme makinasi - ve iki istikametli kelepce
EP0519397A1 (de) * 1991-06-17 1992-12-23 Nippon Steel Corporation Stichlochbohrmaschine
GB2260189A (en) * 1991-09-26 1993-04-07 Dango & Dienenthal Maschbau A tapping for blast furnaces
GB2260189B (en) * 1991-09-26 1996-04-10 Dango & Dienenthal Maschbau A tapping hole boring machine for metallurgical containers,especially blast furnaces
US5333839A (en) * 1991-10-31 1994-08-02 Paul Wurth S.A. Machine for boring a tap hole of a shaft furnace
EP0539752A1 (de) * 1991-10-31 1993-05-05 Paul Wurth S.A. Schachtofen-Abstichlochbohrer
DE4233528C2 (de) * 1991-10-31 2001-06-13 Wurth Paul Sa Stichlochbohrmaschine zur Bildung eines Abstichlochs an einem Schachtofen
FR2687689A1 (fr) * 1992-01-24 1993-08-27 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
BE1006264A3 (fr) * 1992-01-24 1994-07-05 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
EP0552476A3 (en) * 1992-01-24 1993-12-29 Wurth Paul Sa Apparatus for opening the taphole of a shaft furnace
US5338013A (en) * 1992-01-24 1994-08-16 Paul Wurth S.A. Machine for piercing a taphole for a shaft furnace
DE4301323C2 (de) * 1992-01-24 2001-10-04 Wurth Paul Sa Stichlochbohrmaschine zur Bildung eines Abstichlochs an einem Schachtofen nach dem Prinzip der verlorenen Stange
WO1993015231A1 (fr) * 1992-01-27 1993-08-05 Paul Wurth S.A. Machine de perçage d'un trou de coulee d'un four a cuve
FR2687688A1 (fr) * 1992-01-27 1993-08-27 Wurth Paul Sa Machine de percage d'un trou de coulee d'un four a cuve.
US5351939A (en) * 1992-06-17 1994-10-04 Paul Wurth S.A. Machine for piercing a taphole for a shaft furnace
EP0574729A1 (de) * 1992-06-17 1993-12-22 Paul Wurth S.A. Schachtofenabstichmaschine
DE4341318C2 (de) * 1992-12-16 2003-11-13 Wurth Paul Sa Kombinierte Maschine zum Öffnen und Verschließen eines Abstichloches eines Schachtofens

Also Published As

Publication number Publication date
US5192489A (en) 1993-03-09
DE3941405C2 (de) 1999-03-25
AU4780590A (en) 1990-07-19
DE3941405A1 (de) 1990-07-19
CA2007184A1 (en) 1990-07-16
EP0379018A3 (de) 1991-09-11
CN1044301A (zh) 1990-08-01
UA15738A (uk) 1997-06-30
LU87427A1 (fr) 1990-07-24
BR9000204A (pt) 1990-11-13
AU626965B2 (en) 1992-08-13
JPH02228410A (ja) 1990-09-11
JP2805368B2 (ja) 1998-09-30
CN1021124C (zh) 1993-06-09
CZ14090A3 (cs) 1998-10-14
RU1774954C (ru) 1992-11-07

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