EP0064644B1 - Führungs- und Positioniermechanismus für die Bohrstange des Abstichloches am Schachtofen und Stichlochbohrmaschine mit einem solchen Mechanismus - Google Patents

Führungs- und Positioniermechanismus für die Bohrstange des Abstichloches am Schachtofen und Stichlochbohrmaschine mit einem solchen Mechanismus Download PDF

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Publication number
EP0064644B1
EP0064644B1 EP82103437A EP82103437A EP0064644B1 EP 0064644 B1 EP0064644 B1 EP 0064644B1 EP 82103437 A EP82103437 A EP 82103437A EP 82103437 A EP82103437 A EP 82103437A EP 0064644 B1 EP0064644 B1 EP 0064644B1
Authority
EP
European Patent Office
Prior art keywords
jaws
fact
accordance
rod
drill rod
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
Application number
EP82103437A
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English (en)
French (fr)
Other versions
EP0064644A1 (de
Inventor
Pierre Mailliet
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
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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 AT82103437T priority Critical patent/ATE15696T1/de
Publication of EP0064644A1 publication Critical patent/EP0064644A1/de
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Publication of EP0064644B1 publication Critical patent/EP0064644B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/24—Guiding or centralising devices for drilling rods or pipes
    • 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 device for centering and guiding a drilling rod for the taphole of a shaft furnace designed to be mounted on the front end of the carriage mount of a taphole drilling machine which is equipped with a device for gripping the end of the piercing rod which can slide along the mounting of the machine.
  • the invention also relates to a machine for drilling a tap hole equipped with such a centering and guiding device and suitable for a method according to which the opening and closing of the tap hole respectively comprise an extraction operation. and an operation to replace the piercing rod which is abandoned in the taphole between two successive castings.
  • This patent also explains the problems linked to the use, for the implementation of this new process, of machines designed for the conventional drilling processes or to the design of machines suitable for the implementation of the two processes, namely the process conventional, or the drilling process mentioned in the preamble.
  • devices are known for guiding and centering the foil in a drilling machine by means of pivoting jaws as for example described in documents US-A-2789 789 and FR-A-1 264 949.
  • these documents relate to machines in which, unlike the machines forming the subject of the present invention, the carriage does not undergo a gyratory movement before and after its operation so that the problems discussed above do not arise.
  • the pivoting jaws are not used to thread the carriage into the foil, but to stabilize and guide the latter, in particular the crown of the foil to target the place to be drilled.
  • the aim of the present invention is to solve the problems discussed above for all types of tap hole drilling machines by means of a simple and effective centering and guiding device designed to be fixed on the front part of the lookout for these drilling machines.
  • the device proposed by the invention is essentially characterized in that the jaws are carried by parallel axes of rotation mounted at the front end of the mount perpendicularly to the longitudinal axis thereof and symmetrically on either side of the extension of the axis of the gripping device and in that the inner side of each of the jaws is designed in the form of an inclined ramp, the ramp of one of the jaws being in the upper part of the latter being oriented to act from top to bottom on the piercing rod, while the ramp of the other jaw is symmetrically in the lower half thereof and is oriented to act from bottom to top on the drilling rod.
  • the width of the jaws on the side provided with the inclined ramp is greater than half the spacing of their axes of rotation, so that these jaws partially overlap in the closed position.
  • the jaws are designed to rotate in opposite directions.
  • at least one of the jaws is bent or curved.
  • the two jaws are designed to rotate in the same direction and are oriented in opposite directions in the open position.
  • the jaws may be flat.
  • the invention also relates to a machine for drilling a tap hole of a shaft furnace comprising a centering and guiding device of the kind described above.
  • the reference 20 designates the base of the wall of a blast furnace.
  • the reference 22 represents the tap hole obstructed by a plugging mass 24, such as hardened clay, through which a drilling rod 26 has been introduced, before hardening.
  • This drilling rod 26 is abandoned in the position shown in FIG. 1 until the next taphole opening operation, an operation which consists in removing this piercing rod 26 to release the opening of the taphole 22.
  • the latter is provided at its end with a circular groove 28 or other suitable means.
  • the reference 30 shows the lookout for a taphole drilling machine with a working tool 32 sliding along the lookout 30 and equipped with such a percussion member. Since this working tool 32 is designed to travel along the carriage 30, it can be used to extract the piercing rod 26, provided that there is an appropriate gripping device shown diagrammatically by the reference 34.
  • the mount 30 To be able to grasp the circular groove 28 by the gripping member 34, the mount 30 must be brought into an operating position in which the gripping member 34 is located substantially in the axis of the piercing rod 26 so to be able to be engaged by sliding along the carriage 30.
  • the carriage 30 shown in FIGS. 1 and 2 is that of a type of machine in which the final phase of this approach movement towards the operative position comprises a descent component and an approach component towards the furnace.
  • Figure 1 there is shown the carriage 30 in a position preceding the operative position, that is to say that the carriage must still descend and approach the oven so that the axis of the gripping device 34 is aligned with the axis of the drill rod 2.6.
  • This centering and guiding device proposed by the invention is represented diagrammatically by the reference 36 in FIGS. 1 and 2 must in fact ensure the alignment of the axis of the piercing rod 26 with that of the gripping device 34 and vice versa even, if the approach movement by the carriage 30 does not allow this exact alignment or if the piercing rod 26, in particular its end, no longer occupies the axial position of the tap hole, as shown diagrammatically by the bent axis 26 'of the drilling rod.
  • the working tool 32 can be advanced until the gripping device 34 grasps the piercing rod 26 by the circular groove 28. From this moment, the working tool 32 can be actuated to move back along the carriage 30 and extract the piercing rod 26 from the tap hole 22. During this extraction, in particular during the final phase when the piercing rod 26 no longer has support in the taphole 22 it is supported by the device 36, as shown in FIG. 2.
  • FIGS. 4 to 8 A first embodiment of a centering and guiding device 36 will be described with reference to FIGS. 4 to 8.
  • This device essentially consists of two pivoting jaws 38 and 40 whose axes of rotation 42 and 44 are mounted on the front end of the mount perpendicularly to the longitudinal axis thereof and symmetrically on either side of the extension of the axis of the gripping device 34 not shown in FIGS. 4 to 8.
  • the two axes of rotation 42 and 44 are connected respectively by sets of articulated levers 50, 52 to a rod 48 of a jack 46 or of an electromechanical motor fixed on the carriage 30.
  • the sliding of this rod 48 under the action of the jack 46 consequently causes the axes 42 and 44 to rotate and the jaws 38 and 40 to pivot between an open position according to FIG. 3 and a closed position according to FIG. 7.
  • each of the jaws 38 and 40 is designed as an inclined ramp 38a 40a respectively.
  • the inclined ramp of one of the jaws for example, the ramp 38a of the jaw 38, extends from the central region towards the upper part in order to exert on the rod 26 a thrust from top to bottom when it meets this during closing.
  • the ramp 40a extends symmetrically with respect to the ramp 38a from the middle region of the jaw 40 towards the lower part so as to exert a force from the bottom up on the rod during its encounter when the jaws are closed. .
  • these jaws 38 and 40 delimit, during their movement, a diamond-shaped opening section evolving by increasing or decreasing symmetrically around the central axis which, by the arrangement of the axes of rotation corresponds to the extension of the axis of the gripping device 34.
  • FIGS. 3 and 4 As shown diagrammatically in FIG. 1.
  • the hatched area in broken lines represented by 54 in FIG. 4 represents the section maximum swept by the jaws during their closing movement.
  • the area 54 is gradually reduced through an intermediate diamond shape 54' ( Figure 6) for be reduced to the minimum surface 54 ", also in the shape of a diamond around the central axis (FIG. 8).
  • the final position of the rod 26 will therefore necessarily be a central position relative to the jaws and vice versa, even if this position was not central at the start of the closure of the jaws according to FIGS. 3 and 4.
  • These jaws 38 and 40 therefore ensure that the piercing rod 26 is, after their closure according to FIGS. 7 and 8, in alignment with the gripping device 34.
  • the second embodiment shown in FIGS. 9 to 12 differs from the embodiment described above essentially by the fact that the two jaws 58 and 60 are oriented in opposite directions in the open position shown in FIGS. 9 and 10.
  • the rod 48 of the jack 46 (FIG. 1) is connected to one of the axes of rotation, in this case the axis 62, by a set of articulated levers 68.
  • the other axis 64 of the jaw 60 is actuated from the axis 62 via a linkage 66. While in the first embodiment the jaws turned in opposite directions, in this second embodiment the jaws 58 and 60 rotate in the same direction when the action of the jack 46.
  • the shape of the jaws 58, 60, as well as their operation, are similar to those of the previous embodiment, that is to say that, when they are closed, passing from the position according to FIGS. 9 and 10 to that of FIGS. 11 and 12, the jaws 58 and 60 bring the piercing rod 26 to a central position if it was not initially.
  • this second embodiment there is no danger that the jaws 58 and 60 collide during their movements and, therefore, they can both be flat.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)

Claims (10)

1. Führungs- und Positioniermechanismus für die Bohrstange (26) des Abstichloches (22) am Schachtofen, dazu ausgelegt, um an der vorderen Extremität der Lafette (30) einer Stichlochbohrmaschine, welche mit einer Greifvorrichtung (34) für die Extremität (28) der Bohrstange (26) versehen und entlang der Lafette (30) der Maschine verschieblich ist, montiert zu werden, mit einem Paar Schwenkbacken (38, 40), (58, 60) von komplementärer Gestalt und einem Mechanismus zum synchronen Schwenken der beiden Backen (38, 40, 62, 64) zwischen einer offenen Stellung und einer geschlossenen Stellung, in welcher die Backen (38, 40, 58, 60) die Bohrstange umfassen, dadurch gekennzeichnet, dass die Backen (38, 40, 58, 60) von zueinander parallelen Drechachsen (42, 44, 62, 64) getragen werden, welche an der vorderen Extremität der Lafette (30) senkrecht in Bezug zur Längsachse letzterer und beidseits symmetrisch zur Verlängerung der Achse der Greifvorrichtung (34) montiert sind, und dass die Innenseite einer jeden Backe (38, 40, 58, 60) als geneigte Rampe (38a, 40a) ausgelegt ist wobei die Rampe (38a) der einen Backe (38), welche sich am Oberteil dieser letzteren befindet, so gerichtet ist, dass sie von oben nach unten auf die Bohrstange (26) wirkt, während die Rampe (40a) der anderen Backe (40) sich symmetrisch in der unteren Hälfte dieser letzteren befindet und so gerichtet ist, dass sie von unten oben auf die Bohrstange (26) wirkt.
2. Mechanismus nach Anspruch 1, dadurch gekennzeichnet, dass die Breite der Backen (38, 40, 58, 60) an der mit der geneigten Rampe (38a, 40a) versehenen Seite grösser ist als die Hälfte des Abstandes zwischen ihren Drehachsen (42, 44, 62, 64) so dass diese Backen (38, 40, 58, 60) sich in geschlossener Stellung teilweise überdecken.
3. Mechanismus nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass der Mechanismus zum Schwenken der Backen (38, 40, 58, 60) aus einem an der Lafette (30) montierten Hydraulik- oder Pneumatikzylinder besteht, oder aus einem elektro-mechanischen Motor.
4. Mechanismus nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Backen (38, 40) dazu ausgelegt sind, gegensinnig geschwenkt zu werden.
5. Mechanismus nach Anspruch 4, dadurch gekennzeichnet, dass die Achsen (42, 44) jeweils durch eine Gelenkhebelanordnung (50, 52) mit der Stange (48) des Zylinders (46) verbunden sind.
6. Mechanismus nach Anspruch 4, dadurch gekennzeichnet, dass mindestens eine der Backen (38) abgewinkelt oder gekrümmt ist.
7. Mechanismus nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die beiden Backen (58, 60) dazu ausgelegt sind um gleichsinnig geschwenkt zu werden und dass sie in geöffneter Stellung in entgegengesetzte Richtungen zeigen.
8. Mechanismus nach Anspruch 7, dadurch gekennzeichnet, dass die Backen (58, 60) eben sind.
9. Mechanismus nach Anspruch 7, dadurch gekennzeichnet, dass der Zylinder (46) mit seiner Kolbenstange (48) und einer Gelenkhebelanordnung (68) mit einer der Schwenkachsen (62) verbunden ist, wobei letztere durch ein Gestänge (66) mit der zweiten Schwenkachse (64) verbunden ist.
10. Stichlochbohrmaschine für das Abstichloch an einem Hochofen, welche sich für ein Verfahren eignet, bei welchem das Öffnen und das Schliessen des Abstichloches (22) einen Extraktionsvorgang, bzw. einen Einführungsvorgang für die Bohrstange (26) umfasst, welch letztere zwischen zwei aufeinander folgenden Abstichen im Abstichloch (22) belassen wird, gekennzeichnet durch einen Führungs- und Positioniermechanismus gemäss einem beliebigen der Ansprüche 1 bis 10.
EP82103437A 1981-05-05 1982-04-23 Führungs- und Positioniermechanismus für die Bohrstange des Abstichloches am Schachtofen und Stichlochbohrmaschine mit einem solchen Mechanismus Expired EP0064644B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82103437T ATE15696T1 (de) 1981-05-05 1982-04-23 Fuehrungs- und positioniermechanismus fuer die bohrstange des abstichloches am schachtofen und stichlochbohrmaschine mit einem solchen mechanismus.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83336 1981-05-05
LU83336A LU83336A1 (fr) 1981-05-05 1981-05-05 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

Publications (2)

Publication Number Publication Date
EP0064644A1 EP0064644A1 (de) 1982-11-17
EP0064644B1 true EP0064644B1 (de) 1985-09-18

Family

ID=19729643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103437A Expired EP0064644B1 (de) 1981-05-05 1982-04-23 Führungs- und Positioniermechanismus für die Bohrstange des Abstichloches am Schachtofen und Stichlochbohrmaschine mit einem solchen Mechanismus

Country Status (8)

Country Link
EP (1) EP0064644B1 (de)
AR (1) AR227821A1 (de)
AT (1) ATE15696T1 (de)
AU (1) AU552108B2 (de)
DE (1) DE3266314D1 (de)
ES (1) ES511607A0 (de)
LU (1) LU83336A1 (de)
ZA (1) ZA822789B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544332B1 (fr) * 1983-04-12 1985-08-09 Solmer Dispositif de debouchage de haut-fourneau par extraction de barre
LU84855A1 (fr) * 1983-06-08 1985-03-29 Wurth Paul Sa Machine de percage d'un trou de coulee de four a cuve
AT383866B (de) * 1984-07-06 1987-09-10 Ver Edelstahlwerke Ag Einrichtung zum schlagenden und/oder drehenden bohren
LU87190A1 (fr) * 1988-04-06 1989-11-14 Wurth Paul Sa Machine de percage de trous de coulee d'un four a cuve
LU88058A1 (fr) * 1992-01-24 1993-08-17 Paul Wurth S.A. Machine de percage d'un trou de coulee d'un four a cuve
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
ES2125929T3 (es) * 1992-06-17 1999-03-16 Wurth Paul Sa Maquina para perforacion de una piquera de un horno de cuba.
EP2415881B1 (de) * 2010-08-04 2013-12-25 TMT Tapping-Measuring-Technology GmbH Haltevorrichtung für eine Bohrstange einer Stichlochbohrmaschine sowie Verfahren zum Entfernen einer Bohrstange

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394806A (en) * 1944-09-16 1946-02-12 Sullivan Machinery Co Drill steel guide
US2523512A (en) * 1945-07-31 1950-09-26 Worthington Pump & Mach Corp Drill steel centralizer
US2675997A (en) * 1947-06-18 1954-04-20 Joy Mfg Co Drill steel guide
US2789789A (en) * 1953-07-03 1957-04-23 Jr Luke Lea Rock drills
FR1264949A (fr) * 1960-08-11 1961-06-23 Boehler & Co Ag Geb Dispositif pour l'application et le guidage de tiges de forage
US3441323A (en) * 1967-06-07 1969-04-29 Gardner Denver Co Centralizer
US3756669A (en) * 1972-01-28 1973-09-04 Lee Norse Co Apparatus for holding a rotary tool
LU79749A1 (fr) * 1978-06-01 1978-11-28 Wurth Paul Sa Mecanisme de guidage et de positionnement de l'outil de travail d'une machine de percee ou d'obturation du trou de coulee d'un four a cuve
FR2464303A1 (fr) * 1979-09-05 1981-03-06 Atlas Copco France Dispositif pour enfoncer et retirer, par percussion a l'aide d'un seul marteau et avec accrochage automatique, une barre, par exemple une barre en contact avec la fonte et faisant saillie a l'exterieur d'un haut fourneau
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

Also Published As

Publication number Publication date
ES8306861A1 (es) 1983-06-16
LU83336A1 (fr) 1983-03-24
DE3266314D1 (en) 1985-10-24
ATE15696T1 (de) 1985-10-15
AU8326182A (en) 1982-11-11
AR227821A1 (es) 1982-12-15
ZA822789B (en) 1983-03-30
AU552108B2 (en) 1986-05-22
ES511607A0 (es) 1983-06-16
EP0064644A1 (de) 1982-11-17

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