EP0018347B1 - Dispositif pour la percée du trou de coulée d'un haut fourneau - Google Patents

Dispositif pour la percée du trou de coulée d'un haut fourneau Download PDF

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Publication number
EP0018347B1
EP0018347B1 EP19800890022 EP80890022A EP0018347B1 EP 0018347 B1 EP0018347 B1 EP 0018347B1 EP 19800890022 EP19800890022 EP 19800890022 EP 80890022 A EP80890022 A EP 80890022A EP 0018347 B1 EP0018347 B1 EP 0018347B1
Authority
EP
European Patent Office
Prior art keywords
housing
blast furnace
piston
pressure medium
cylinder housing
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
EP19800890022
Other languages
German (de)
English (en)
Other versions
EP0018347A1 (fr
Inventor
Josef Huszar
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.)
Vereinigte Edelstahlwerke AG
Original Assignee
Vereinigte Edelstahlwerke AG
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 Vereinigte Edelstahlwerke AG filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0018347A1 publication Critical patent/EP0018347A1/fr
Application granted granted Critical
Publication of EP0018347B1 publication Critical patent/EP0018347B1/fr
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 tapping device for a blast furnace, in which a beater bar provided with a recess is coupled to a counter-impact mechanism.
  • the tap hole in question can be pre-drilled to a remaining wall thickness of approximately 50 cm using a boring bar. Then this is replaced by a blow rod and with it a continuous tap hole is made by hitting it. The beater bar is then pulled out of the tap hole. Pig iron flows through them first and then slag from the furnace, whereupon the same begins to blow. The taphole opening is then closed with a taphole gun with taphole mass.
  • a more economical method for parting off a blast furnace is carried out with a counterblow hammer as follows: 15 to 30 minutes after closing the respective tap hole opening, a new tap hole is drilled up to half and the remaining section is pierced with a beater bar. This remains in the blast furnace and the drilling device is removed from the tap hole channel. Then the tap hole device is swiveled in again, coupled with the impact bar and this is pulled out with the counter-impact mechanism.
  • a simple device in which the function of the counter-impact mechanism was realized by swiveling the impact tool, which was separated from the impact bar, then rotated by 180 ° and connected to it by means of a chain, a ring fastened to it and a wedge piece, is connected to it DE-C-437 206 known.
  • the implementation of the procedure in question was previously associated with a very high risk of accident for the operator concerned.
  • the invention has for its object to avoid the disadvantages mentioned and to provide a simple device for the safe and automatic coupling of a striker provided in the coupling area with a recess to a counter-impact mechanism for tapping a blast furnace.
  • This object is achieved in that in a cylinder housing connected to the counter-impact mechanism and comprising the impact rod end, an end face which is inclined to the geometrical longitudinal axis when exposed to pressure medium, a wedge piece provided with a corresponding run-up surface and slidably arranged in the housing for lateral engagement in the recess of the in the housing is brought into the piston rod which can be brought in and that the piston and the wedge piece are arranged in the housing in the case of pressure medium relief springs returning in the housing.
  • the device according to the invention has the particular advantage that it allows the coupling and uncoupling of the relevant impact bar to be carried out safely and automatically from a control station, e.g. B. with compressed air.
  • DE-A-1 552707 discloses a clamping element for holding the workpiece to be machined in metal-cutting machine tools, in which the clamping force is generated by a piston acted upon by pressure medium and the piston force is exerted on it the clamping bolt is transmitted via pressure surfaces that run obliquely to the guide axis and cause self-locking. It goes without saying that it is simply a matter of building up and maintaining a high clamping force, so that there is no connection with the task of realizing a clutch remote control in a simple and safe manner.
  • a pressure medium duct 3 leads into one end region of the interior 2 of a cylinder housing 1 connected to the counter-impact mechanism.
  • a piston 4 located in this interior 2 has a surface 5 which runs obliquely to its geometric longitudinal axis in its end region remote from the pressure medium duct 3.
  • a helical spring 8 which presses against the piston 4
  • a wedge piece 9 which is displaceable transversely to its geometric longitudinal axis and is pressed with two helical springs 10 in the direction of this surface 5 are provided. The same can be pushed by the piston 4 into a recess 13 of the beater bar 12 which is introduced into a bore 11 of the cylinder housing 1 which runs parallel to its geometric longitudinal axis.
  • the wedge piece 9 is guided laterally by the cylinder housing 1 and on the side facing away from the piston 4 by a cover 14. This is attached to the cylinder housing 1 by two hexagon screws 15, each provided with a cap nut 16 and a spring ring 17. Two dowel pins 18 located partly in the cylinder housing 1 and partly in the cover 14 ensure that this is in the correct position relative to the cylinder housing 1.
  • the piston 4 is sealed by means of an O-ring 7 located between two support rings 6.
  • the cylinder housing 1 has a cylindrical projection 19 which is inserted into an intermediate piece 20 and fastened to this by means of a cross wedge 21.
  • the intermediate piece 20 is attached to the counter-impact mechanism, not shown.
  • a tube piece 22 is provided, which is sealed in the intermediate piece 20 by means of an O-ring 23.
  • Coupling of the impact rod 12 is carried out safely from the control station automatically with compressed air, which in this case flows through the pipe section 22 and the pressure medium channel 3 provided in the cylinder housing 1 into one end region of the interior 2 of the cylinder housing 1 and displaces the piston 4.
  • the latter presses the wedge piece 9 into the recess 13 of the impact rod 12 inserted into the bore 11, as a result of which it is coupled to the counter-impact mechanism via the cylinder housing 1 and the intermediate piece 20.
  • the same is disengaged by venting the interior 2 of the cylinder housing 1 via the pressure medium channel 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Blast Furnaces (AREA)

Claims (1)

  1. Dispositif de piquée pour haut fourneau dans lequel une tige de percussion munie d'un évidement dans la région d'accouplement est accouplée à un mécanisme de contre-percussion, caractérisé par le fait que dans un corps cylindrique (1) relié au mécanisme de contre- percussion et entourant l'extrémité de la tige de percussion est prévu un piston (4) qui, lors de l'action de l'agent de pression, par sa surface frontale (5) dirigée obliquement par rapport à l'axe longitudinal géométrique, est adapté à entraîner un coin (9), muni d'une surface d'attaque correspondante et disposé de manière à pouvoir coulisser dans le corps (1), à se verrouiller latéralement dans l'évidement (13) de la tige de percussion (12) introduite dans le corps (1), et que dans le corps (1) sont disposés des ressorts (8; 10) ramenant le piston (4) et le coin (9), lorsque l'agent de pression cesse d'agir, à leur position initiale respective.
EP19800890022 1979-03-02 1980-02-26 Dispositif pour la percée du trou de coulée d'un haut fourneau Expired EP0018347B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT158779A AT361955B (de) 1979-03-02 1979-03-02 Vorrichtung fuer das ankuppeln einer schlag- stange
AT1587/79 1979-03-02

Publications (2)

Publication Number Publication Date
EP0018347A1 EP0018347A1 (fr) 1980-10-29
EP0018347B1 true EP0018347B1 (fr) 1983-09-28

Family

ID=3516643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800890022 Expired EP0018347B1 (fr) 1979-03-02 1980-02-26 Dispositif pour la percée du trou de coulée d'un haut fourneau

Country Status (3)

Country Link
EP (1) EP0018347B1 (fr)
AT (1) AT361955B (fr)
DE (1) DE3064999D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT365651B (de) * 1980-06-06 1982-02-10 Ver Edelstahlwerke Ag Verfahren zum wechselweisen verschliessen und oeffnen des stichloches metallurgischer oefen, insbesondere von hochoefen
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
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE410549C (de) * 1921-06-06 1925-03-03 Huettenbetr Ag F Vorrichtung zum Abstechen von Hochoefen
DE437206C (de) * 1926-05-05 1926-11-16 Ag Deutsche Maschf Vorrichtung zum Abstechen von Hochoefen
GB470630A (en) * 1936-05-22 1937-08-18 Fernand Eloy An improved pneumatic hammer for piercing the tapping-holes of blast furnaces
DE1231272B (de) * 1959-04-21 1966-12-29 Dango & Dienenthal Kommanditge Verfahren und Vorrichtung zum OEffnen des Stichlochs von Schachtoefen, insbesondere von Hochoefen, durch Bohren
DE1552707A1 (de) * 1966-03-02 1970-07-02 Volk Geb Knaebler Spannelement,bei welchem die Spannkraft durch ein Druckmittel erzeugt wird
AT265338B (de) * 1966-06-07 1968-10-10 Voest Ag Stichlochbohrmaschine
US3862750A (en) * 1972-10-17 1975-01-28 Inland Steel Co Tophole opening apparatus
US4037828A (en) * 1975-10-04 1977-07-26 Nippon Carbide Kogyo Kabushiki Kaisha Automatic tapping machine

Also Published As

Publication number Publication date
AT361955B (de) 1981-04-10
EP0018347A1 (fr) 1980-10-29
DE3064999D1 (en) 1983-11-03
ATA158779A (de) 1980-09-15

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