EP0405207B1 - Vorrichtung zum Kuppeln einer Bohrstange für Schachtofenabstichlöcher mit dem Arbeitswerkzeug einer Bohrmaschine - Google Patents

Vorrichtung zum Kuppeln einer Bohrstange für Schachtofenabstichlöcher mit dem Arbeitswerkzeug einer Bohrmaschine Download PDF

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Publication number
EP0405207B1
EP0405207B1 EP90110951A EP90110951A EP0405207B1 EP 0405207 B1 EP0405207 B1 EP 0405207B1 EP 90110951 A EP90110951 A EP 90110951A EP 90110951 A EP90110951 A EP 90110951A EP 0405207 B1 EP0405207 B1 EP 0405207B1
Authority
EP
European Patent Office
Prior art keywords
rod
plug
piston
clamp
cavity
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
EP90110951A
Other languages
English (en)
French (fr)
Other versions
EP0405207A2 (de
EP0405207A3 (en
Inventor
Jean Metz
Severino Venturini
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 EP0405207A2 publication Critical patent/EP0405207A2/de
Publication of EP0405207A3 publication Critical patent/EP0405207A3/fr
Application granted granted Critical
Publication of EP0405207B1 publication Critical patent/EP0405207B1/de
Anticipated expiration legal-status Critical
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17128—Self-grasping
    • Y10T279/17171—One-way-clutch type
    • Y10T279/17179—Wedge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means

Definitions

  • the present invention relates to a device for coupling a drilling rod of the tap hole of a shaft furnace to the working tool of a drilling machine for implementing a method according to which the closure and the opening of the taphole include a setting operation and an operation of extracting the piercing rod which is abandoned in the mass of the taphole between two successive castings, said device comprising a mandrel to be made integral of the working tool and which comprises a front receiving cavity for receiving the end of the piercing rod, a clamp for hanging the end of said rod in this cavity, this clamp consisting of at least two rods sliding devices arranged symmetrically around the axis of the cavity, and each carrying at one end a jaw intended to grip the end of the rod and, at the opposite end, a piston subjected, on the one hand, to the '' action of a pneumatic or hydraulic fluid to close the clamp by penetration of the jaws into the rod and, on the other hand, to elastic means acting in the direction of opening of the clamp, each of said pistons sliding in
  • a device of this kind is known from French patent 2,520,857.
  • the working tool is generally constituted by a pneumatic striker which can strike in both directions in order to push the piercing rod into the blocking mass before the hardening of that -this and to be able to extract it when opening the tap hole.
  • Pneumatic fluid used for the striker can also be used to close the pliers when extracting the piercing rod, while when engaging the piercing rod, the pneumatic chamber of the pliers piston is ventilated to allow opening of these clamps under the action according to their elastic means.
  • the object of the present invention is to provide an improved device of the type described in the preamble which does not have these drawbacks.
  • the device proposed by the present invention is essentially characterized by a spring disposed between said plug and the adjacent face of the piston, said spring being powerful enough to keep the piston away from the plug against the action of said means. elastic to which it is exposed on the opposite side.
  • the plug preferably has a cylindrical cavity for housing the spring.
  • This device comprises a mandrel 1o provided with a front cavity 12 for receiving the free end of a piercing rod 14 and a rear axial bore 16 for receiving the striker of a working tool not shown.
  • the device comprises a clamp for gripping the front end of the rod 14.
  • This clamp consists of two jaws arranged symmetrically around the longitudinal axis of the mandrel 1o and sliding obliquely relative to this axis 0.
  • One of these jaws is represented by the reference 18, while the other which is not visible is identical to the one which is represented and functions in the same way.
  • the jaw 18 is mounted on the front end of a rod 20 and is guided by the interior surface of the cavity 12.
  • the rod 20 is extended in a cylindrical chamber 26 where it is integral with a piston 22.
  • This piston 22 is, in the example shown, a pneumatic piston which undergoes, on the side opposite to the rod 20, the action of a pneumatic fluid penetrating into the chamber 26 via a pipe 24.
  • a pneumatic piston Around the rod 20 is one or more helical springs 28 bearing, on the one hand, on the piston 22 and, on the other hand, on an inner rim of the pneumatic chamber 26.
  • the pressurization of the chamber 26 through the pneumatic line 24 advances the jaw 28 up to '' with superficial penetration in the rod 14 so that a movement to the right of the mandrel 10 drives the rod 14.
  • the ventilation of the chamber 26 subjects the piston 22 to the action of the spring 28 to release the jaw 18 of the rod 14. This is for example the case during the engagement nt of the rod 14 in the plugging mass of the tap hole.
  • the invention proposes to have a spring 32 between the piston 22 and the plug 30.
  • the latter comprises, at this Indeed, preferably a cylindrical chamber 34 for housing this spring 32.
  • This spring 32 is powerful enough to oppose, in part, the action of the spring 28 and maintain, when the chamber 26 is ventilated, the piston 22 away from the inner surface of the plug 30 and thus avoid hammering of the plug 30 by the piston 22.
  • the mandrel 10 unlike the known mandrels, is a one-piece machined mandrel which contributes to greater longevity, since it does not include bolts and assembly screws which, in general, very vulnerable by repeated percussion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Earth Drilling (AREA)
  • Blast Furnaces (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Gripping On Spindles (AREA)

Claims (3)

  1. Vorrichtung zum Kuppeln einer Bohrstange für Schachtofenabstichlöcher mit dem Arbeitswerkzeug einer Bohrmaschine, zur Verwirklichung eines Verfahrens, gemäß dem das Schließen und das Öffnen des Abstichloches einen Vorgang zum Einschieben bzw. einen Vorgang zum Herausziehen der Bohrstange (14) umfaßt, die zwischen zwei aufeinanderfolgenden Abstichen in der Masse des Abstichloches zurückgelassen wird, wobei diese Vorrichtung ein Spannfutter (10) aufweist, das ausgelegt ist, um mit dem Arbeitswerkzeug fest verbunden zu werden, und das versehen ist mit einen vorderen Hohlraum (12) zur Aufnahme des Endes der Bohrstange (14), einer Zange, um das Ende der Stange (14) in diesem Hohlraum (12) festzuklemmen, wobei die Zange aus mindestens zwei Gleitstäben (20) besteht, die symmetrisch zu der Achse (O) des Hohlraums (12) angeordnet sind, und von denen jeder an einem Ende eine Backe (18) trägt, die dazu bestimmt ist, das Ende der Stange (14) zu ergreifen, und, an dem entgegengesetzten Ende, einem Kolben (22), der einerseits der Wirkung eines pneumatischen oder hydraulischen Fluids unterworfen wird, um die Zange zu schließen, wobei die Backen (18) in die Stange (14) eindringen, und andererseits elastischen Mitteln (28) unterworfen wird, die in der Richtung einer Öffnung der Zange wirken, wobei jeder der Kolben (22) in einer dichten zylindrischen Kammer (26) gleitet, die am hinteren Ende durch eine Verschlußkappe (30) verschlossen ist, gekennzeichnet durch eine Feder (32), die zwischen der Verschlußkappe (30) und der angrenzenden Fläche des Kolbens (22) angeordnet ist, wobei diese Feder (30) stark genug ist, um den Kolben (22) entgegen der Wirkung der elastischen Mittel (28) von der Verschlußkappe (30) fernzuhalten.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Verschlußkappe (30) einen zylindrischen Hohlraum (34) zur Unterbringung der Feder (32) umfaßt.
  3. Vorrichtung gemäß irgendeinem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß das Spannfutter (10) ein Monoblock-Spannfutter ist.
EP90110951A 1989-06-30 1990-06-09 Vorrichtung zum Kuppeln einer Bohrstange für Schachtofenabstichlöcher mit dem Arbeitswerkzeug einer Bohrmaschine Expired - Lifetime EP0405207B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87546 1989-06-30
LU87546A LU87546A1 (fr) 1989-06-30 1989-06-30 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

Publications (3)

Publication Number Publication Date
EP0405207A2 EP0405207A2 (de) 1991-01-02
EP0405207A3 EP0405207A3 (en) 1991-09-11
EP0405207B1 true EP0405207B1 (de) 1994-09-28

Family

ID=19731170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110951A Expired - Lifetime EP0405207B1 (de) 1989-06-30 1990-06-09 Vorrichtung zum Kuppeln einer Bohrstange für Schachtofenabstichlöcher mit dem Arbeitswerkzeug einer Bohrmaschine

Country Status (10)

Country Link
US (1) US5056968A (de)
EP (1) EP0405207B1 (de)
JP (1) JP2805382B2 (de)
AT (1) AT403379B (de)
AU (1) AU621487B2 (de)
BR (1) BR9003153A (de)
CA (1) CA2017415A1 (de)
DE (1) DE4016035A1 (de)
ES (1) ES2062186T3 (de)
LU (1) LU87546A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
LU88129A1 (fr) * 1992-06-10 1994-03-01 Wurth Paul Sa Mandrin universel pour une machine de percage d'un trou de coulee d'un four a cuve
FI925647L (fi) * 1992-12-11 1994-06-12 Outokumpu Chrome Oy Kaasuputken syöttölaite sulaa materiaalia sisältävään uuniin

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862750A (en) * 1972-10-17 1975-01-28 Inland Steel Co Tophole opening apparatus
LU78756A1 (de) * 1977-12-22 1978-04-17
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
DE3339127A1 (de) * 1983-10-28 1985-05-09 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Greifvorrichtung fuer in das stichloch von metallurgischen oefen eintreibbare und aus diesem herausziehbare stangen, insbesondere abstichstangen
JPS60169250U (ja) * 1984-04-16 1985-11-09 マツダ株式会社 出銑口開孔用ロツドチヤツキング装置
LU87010A1 (fr) * 1987-10-06 1989-05-08 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

Also Published As

Publication number Publication date
EP0405207A2 (de) 1991-01-02
EP0405207A3 (en) 1991-09-11
ES2062186T3 (es) 1994-12-16
BR9003153A (pt) 1991-08-27
AU621487B2 (en) 1992-03-12
CA2017415A1 (en) 1990-12-31
AT403379B (de) 1998-01-26
ATA103490A (de) 1997-06-15
LU87546A1 (fr) 1991-02-18
DE4016035A1 (de) 1991-01-03
JP2805382B2 (ja) 1998-09-30
US5056968A (en) 1991-10-15
JPH0339409A (ja) 1991-02-20
AU5576290A (en) 1991-01-03

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