EP0574729A1 - Schachtofenabstichmaschine - Google Patents

Schachtofenabstichmaschine Download PDF

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Publication number
EP0574729A1
EP0574729A1 EP93108260A EP93108260A EP0574729A1 EP 0574729 A1 EP0574729 A1 EP 0574729A1 EP 93108260 A EP93108260 A EP 93108260A EP 93108260 A EP93108260 A EP 93108260A EP 0574729 A1 EP0574729 A1 EP 0574729A1
Authority
EP
European Patent Office
Prior art keywords
carriage
rod
machine according
support
finger
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
EP93108260A
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English (en)
French (fr)
Other versions
EP0574729B1 (de
Inventor
Victor Kremer
Emile Lonardi
Guy Thillen
Philippe Malivoir
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
Priority claimed from LU88135A external-priority patent/LU88135A1/fr
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP0574729A1 publication Critical patent/EP0574729A1/de
Application granted granted Critical
Publication of EP0574729B1 publication Critical patent/EP0574729B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 tap hole in a wall of a shaft furnace by a method in which, after having closed the tap hole with a plugging mass, it is pressed into it before its complete hardening, a rod and one extracts it, at the desired time, for the opening of the tap hole.
  • a machine comprises an adjustable carriage in front of the wall of the shaft furnace in a working position in the extension of the axis of the taphole, a first carriage movable along this carriage, a drive means for said first carriage driving this carriage along this lookout.
  • the object of the present invention is to provide a machine for drilling a tap hole of a shaft furnace, which makes it possible to push said rod into the semi-hardened obturating mass by exerting a powerful push on the free end of the rod, without causing it to buckle, and which does not have the drawbacks mentioned above.
  • the present invention provides a machine for drilling a tap hole of the kind defined in the preamble, which is characterized by guide means for defining a guide channel for the rod, said guide means defining at least one longitudinal opening giving access to the interior of the guide channel perpendicular to the axis thereof; by means for supporting said guide means on the carriage, said support means being designed so that the longitudinal axis of the guide channel is coaxial with the axis of the tap hole when the carriage is in said position working in front of the wall of the shaft furnace to push said metal rod into the tap hole, and by a finger integral with said first carriage, said finger being dimensioned to penetrate through said longitudinal opening inside said guide channel and to be able to exert an axial thrust on one end of the metal rod when the first carriage advances in tap hole direction.
  • the piercing rod slides in the guide channel into which can penetrate the finger which is integral with the carriage driven along the carriage by the powerful drive means.
  • This guidance of the piercing rod in a channel avoids any risk of buckling, when an appreciable axial thrust is applied to the end of the rod by means of the finger penetrating the channel in order to drive its opposite end into the mass. plugging, with which the tap hole was previously sealed.
  • the guide means must be dimensioned so as not to allow a radial escape of the rod of said channel.
  • said guide channel may have axial and radial discontinuities, as long as a radial escape of the metal rod subjected to the axial thrust force is not to be feared.
  • the main advantage of this machine is to be able to safely introduce the piercing rod into the plugging mass by a force exerted on its free end without having to use a noisy striker, imposing significant vibrations on the equipment and the machine.
  • the present guide channel must not be removed as the advancement of said finger, integral with the carriage movable along the carriage. It will also be appreciated that the only element which must be movable according to the present invention is the carriage which supports the finger penetrating inside the channel. Indeed, the guide means defining the guide channel of the metal rod in no way hinder the advancement of the finger secured to the movable carriage and can therefore remain in place during the entire operation of introducing the rod.
  • Said guide means could however still be troublesome during the operation of extracting the rod with a conventional pliers, or when it is desired to work with a conventional drilling machine which can be moved along the carriage to drill the taphole with a drill. This is why it is advantageous to support said support means by means of arms articulated on the carriage. This solution makes it possible to pivot said guide means laterally, freeing up, if necessary, the template required along the carriage to extract the rod using conventional pliers, or else to work with a drill sliding along on the lookout.
  • This pivoting or folding down of said guide means in a lateral position with respect to the carriage has the advantage of removing said guide means from the most dangerous zone opposite the tap hole, which is naturally the one which is located directly in the extension of the jet axis when opening the tap hole.
  • the guide channel of the rod is defined by a tube, having a diameter slightly larger than that of the rod and being provided with at least one longitudinal slot which crosses along a generatrix radially its wall over its entire length. It is a particularly simple and inexpensive embodiment of said guide means.
  • the longitudinal slot allows the penetration of said finger inside the tube so that it can exert an axial thrust on the end of the rod during the advancement of the carriage along the carriage in the direction of the tap hole.
  • the loading of the metal rod into the guide channel can naturally be done axially by pushing the rod through one end of the channel.
  • the introduction of the rod is however facilitated when the guide means can be opened longitudinally to freely place the rod in its guide channel.
  • said guide means may for example consist of longitudinal parts which are juxtaposed to jointly define said guide channel.
  • the tube serving as guide means is split longitudinally into a first and second tube segment. In this way the tube can be opened longitudinally to put the metal rod in it and closed to form said guide channel.
  • the first tube segment is then advantageously mounted on first articulated arms along a first lateral side of the mount and the second tube segment is mounted on second articulated arms along the opposite lateral side of the mount.
  • This arrangement makes it possible to pivot the first tube segment and the second tube segment laterally in opposite directions to open said channel. In the open position of the channel, it is then easy to place the metal rod in one of the two tube segments, then reconstitute the guide channel by pivoting the two tube segments in their initial position. It will be noted that this arrangement also makes it possible to release a certain size between the two tube segments.
  • This template may be necessary for the passage of a clamp or a drill which are movable on said carriage.
  • the pivotable support means are advantageously actuated by one or more jacks. This or these jacks then maintain the guide channel in the axis of the taphole during the sinking operation of the rod and allow the guide means to be folded down when the latter are not used. They can be mounted in a protected area from the lookout and can be effectively protected against splashing.
  • this drive means comprises an endless chain which is driven by a hydraulic motor. It is a particularly simple training means which can however deliver appreciable training efforts. In addition, the chain is self-cleaning and does not require maintenance.
  • the drilling machine is advantageously provided with a working member comprising a drill and possibly a powerful striker.
  • a working member comprising a drill and possibly a powerful striker.
  • This can be useful for reforming or moving the tap hole, or for working with a conventional drill when the lost rod method cannot be used for one reason or another.
  • it is advantageous to provide means for coupling said working member to the drive means of the first carriage. This avoids having to install a second drive system on the machine.
  • the present machine in this case comprises means for firmly coupling the free end of the rod to said drive means.
  • the latter withdraws the rod from the tap hole by a forceful recoil movement, that is to say without producing vibrations and in a completely silent manner.
  • the coupling means used for the extraction of the rod may for example comprise a hook which is mounted on said first carriage. This hook then engages through said longitudinal opening of the guide channel to bear. behind a machined shoulder in the free end of the rod.
  • the present machine comprises in a preferred embodiment an intermediate support sliding on and movable along the carriage, which makes it possible to support a rod or a drill in the absence of the guide channel.
  • a screen mounted at the front of the mount effectively protects the machine against splashes from the jet coming out of the tap hole.
  • FIGS. 1 and 2 show a carriage 10 of a drilling machine.
  • This mount 10 is for example supported at the end of a support arm (not shown) via a central piece 12 secured to the mount 10.
  • This support arm can pivot in a conventional and known manner around a console (not shown ) to move the carriage between a garage position and a working position and vice versa. In this working position the carriage 10 can be oriented in front of the wall of the furnace so that its longitudinal axis is located in the extension of the axis of the tap hole.
  • the carriage can for example be formed from several beams or metal sections welded together to form a sort of box.
  • This box 14 has two side walls 16, 18 connected by an upper plate 20 and defining a longitudinal opening 22 downwards.
  • In the box 14 is mounted at least one endless chain 24.
  • This endless chain 24 is stretched between a driven toothed wheel 26 mounted at the front of the carriage 10 and a driving toothed wheel 28 mounted at the rear of the 'carriage 10.
  • the driving wheel 28 is driven by at least one motor 30 fixed on the carriage 10. It is preferably a hydraulic motor whose direction of rotation can be reversed by a suitable control system.
  • first carriage 32 which is driven by said endless chain 24.
  • This first carriage 32 is shown in more detail in FIG. 4. It has on each side a pair of rollers 34, 36 which are guided respectively in a first rail 38 and in a second rail 40.
  • These rails 38, 40 which have a U-shaped section (cf. FIG. 5), form an integral part of the side walls 16, 18 of the box 14.
  • a finger 42 comprising a flat trunk 44 which extends the carriage 32 downwards through said longitudinal opening 22 in the box 14 forming the carriage 10.
  • This finger 42 is preferably mounted in the carriage 32 to using a cylindrical axis 46, housed in bores 48, 50 of the carriage 32 and passing through a bore 52 of the trunk 44, so as to be able to pivot in the vertical plane passing through the axis of movement of the first carriage 32 .
  • the finger 42 is shown in a position in which it is supported with its lower end on a piercing rod 54. The latter has been put in place in the piercing machine to be pressed into a plugging mass which has been previously injected into the taphole.
  • the lower end of the finger 42 which bears on the rod 54 has the shape of a cylindrical bead 56 which extends in the extension of the axis of the rod 54.
  • the finger 42 has an extension 58 of its trunk 44 on the other side of the cylindrical axis 46. This extension 58 bears on a bearing surface 60 of the first carriage 32 when the cylindrical bead 56 of the finger exerts an axial thrust on the end of the rod 54.
  • the finger 42 can therefore only pivot in the clockwise direction, that is to say in the direction of the arrow indicated by the reference 62.
  • the rod is guided in a channel 64 formed by a cylindrical tube 66.
  • This tube 66 which has substantially the same length as the rod and an inner diameter slightly larger than the diameter of the rod, preferably consists of two tube segments 68, 70 which are almost symmetrical with respect to a plane passing through the longitudinal axis of the tube.
  • Each of the two segments 68, 70 is supported by several bent arms 72, 72 '.
  • the bent arms 72 supporting the first tube segment 68 are axially spaced and fixed on a tube 74 running along the first side wall 16 of the box 14 forming the mount (cf. FIGS. 1 and 3).
  • This tube 74 is mounted, for example in the middle and at its two ends, by means of cylindrical articulations 76 on this first side wall 16, so that it can pivot around its longitudinal axis.
  • the bent arms 74 'supporting the second tube segment 70 are mounted identically along the opposite side wall 18 of the carriage 10.
  • the elements involved in the mounting of the second tube segment 70 are identified by the same numbers reference that the mounting elements of the first tube segment 68, however provided with an accent.
  • the tube 66 formed by juxtaposition of the two tube segments 68, 70 is provided with a longitudinal slot 78 passing through a generatrix radially its wall over its entire length.
  • this slot 78 is facing the longitudinal opening 22 in the mount 10.
  • the finger can penetrate with its flat trunk 44 through the slot 78 inside the tube 66, in which the bead 56 can slide freely when the first carriage 32 is moved along the carriage 10.
  • the latter advantageously has a constriction 80.
  • This constriction 80 allows to limit the width of the slot 78, so as to prevent the rod 54 from being able to get stuck in the slot 78 when the finger 42 exerts an axial thrust on the end of the latter.
  • the rod 54 When the rod 54 is inserted into the plugging mass, the latter is thus guided over its entire length, with the exception of the piece extending between the wall of the shaft furnace and the front of the carriage 10.
  • the length of this unguided piece is much less than the critical length for which buckling is likely to occur.
  • axial interruptions of said guide channel are not bothersome, as long as the forced insertion of the rod 56 into the blocking mass can be carried out safely without having to fear buckling at the places where the metal rod is not guided.
  • the teaching of the present invention does not depart from the definition of said guide channel 64 by several coaxial sleeves which are axially spaced apart by a distance less than the critical length for which buckling is likely to occur between two successive guide sleeves.
  • FIG 3 the two tube segments 68, 70, defining the channel 64 when they are juxtaposed against each other, are shown spaced from one another.
  • This arrangement is obtained by pivoting the tube 74, supporting via the bent arms 72 the first tube segment 68, and by pivoting the tube 74 ', supporting via the bent arms 72' the second tube segment 70 , around their respective axis and in opposite directions.
  • This pivoting is advantageously carried out by means of one or more jacks 82, 84.
  • each of the tubes 74, 74 ′ is provided with its own jack 82, 84.
  • These two jacks 82, 84 are arranged laterally of the carriage, halfway along the tubes 74, 74 'so as to be protected from splashes of cast iron projected outside the tap hole when it is opened. They can also be provided with a protective cage (not shown) which in no way interferes with this position of the carriage 10.
  • Each of the two jacks 82, 84 is articulated according to the rules of the art with one of its ends on a support 86 secured to the carriage 10, and with the other end on a lever arm 88, 88 'secured respectively to the first tube 74 or the second tube 74.
  • lever arm 88, 88' is an extension of a bent arm 72, 72 '. It will be noted that an extension of the two cylinders 82, 84 causes the two tube segments 68, 70 to come together until they meet at the level of the longitudinal median plane of the carriage 10. In this position, shown in FIG. 5 , the two cylinders push the two tube segments 68, 70 firmly against each other to define guide channel 64.
  • a retraction of the two cylinders 82, 84 causes a separation of the two tube segments 68, 70 (cf. FIG. 3) and the longitudinal opening of the channel 64 so that the rod 54 can easily be placed in one of the two segments of tube.
  • This, in Figure 3 it is the straight segment 70, is then advantageously provided with claws 90 to support the rod 54.
  • These claws 90 are spaced axially, as shown in Figures 1 and 2, and penetrate during of the assembly of the two tube segments 68, 70 in corresponding notches 92 made in the other tube segment 68.
  • the two tube segments 68, 70 are parts that can be produced at low cost, from steel tubes cut longitudinally. These tube segments are preferably detachably fixed on the bent arms 72, 72 ', for example using lugs 94 welded on the tube segments and screwed on the bent arms 72, 72'. Such a tab 94 is represented at the level of the left arm 72 of FIG. 3. This assembly makes it possible to easily replace the tube segments 72, 72 ′ when they are accidentally damaged at the front of the carriage 10 by the outgoing cast iron. of the tap hole.
  • a working member 100 usually comprises a drill and a striker. Its presence is justified to be able to drill, if necessary, a tap hole with a conventional drill. This can for example be the case when one wants to reform or move the tap hole, or when one cannot use the lost rod process for one reason or another.
  • the working member 100 is provided with a mandrel 102 which can be coupled to a drill. To this end, the finger 42 is pivoted upwards, that is to say in direction of arrow 62 in Figure 4 to allow the introduction of the drill into the mandrel.
  • the tube segments 68, 70 are separated laterally to free the template necessary for the passage of the working member 100.
  • the working member 100 is mounted on a second carriage 104 which slides using two pairs of rollers 106, 108 in a pair of rails 110, 112. These are fixed in the box 14, parallel below the rails 38, 40 supporting the first carriage 32. They have U-shaped sections and are arranged so as to guide the second carriage vertically and laterally.
  • the working member 100 is advantageously driven by the same drive means as the first carriage 32.
  • the second carriage 104 can for example be coupled by hooks (not shown) or any other means equivalent to the first carriage 32.
  • the working member 100 may also be used for the force extraction of the rod, when it is provided with coupling means 102 suitable for coupling to the end of the rod 54 leaving the tap hole.
  • the first carriage 32 is then provided with a member which transmits the tensile force directly to said coupling means, so as to prevent the transmission of the tensile force from taking place through the mechanics of the working organ.
  • This member can for example be a fork 105 integral with said extension 58 of the finger 42 articulated on the first carriage 32 (cf. FIG. 4).
  • the fork 105 then bears on a shoulder 106 of the coupling 102 mounted on the working member 100 to exert on the latter an axial thrust in the direction of extraction of the rod 54.
  • the articulated finger 42 abuts against a bearing surface 108 of the first carriage 32.
  • the carriage 104 is simply pushed in front of the first carriage 32.
  • the working member 100 must not transmit no tensile force and serves only as a sliding support for the coupling means 102.
  • FIG. 8 An interesting variant for driving the working member 100 is shown in Figures 8 and 9.
  • Figure 8 we see that the fork 105, secured to the finger 42 articulated on the first carriage 32, is blocked by a rod transverse 132 in a vertical position between the shoulder 106 at the rear of the coupling 102 and a second shoulder 130 at the front of the coupling 102.
  • the fork 105 is supported on the front shoulder 130 for drive the working member 100, when the first carriage 32 is moved towards the front of the carriage, in the same direction, and on the rear shoulder 106 to push the working member 100 in front of you, when the first carriage is moved to the rear of the carriage.
  • the coupling 102 comprises a cage 134 secured to one end of the chassis of the working member 100.
  • this cage can rotate freely a rotary member 136 secured to a drive spindle 138 of the working member 100.
  • This cage 134 defines at the front, that is to say on the side of its free end, said shoulder 130, on which the fork 105 is supported during the drive of the working member 100 towards the front of the carriage.
  • the shoulder 106, on which the fork 105 is supported during the extraction of the rod, is in turn machined in the rotary member 136, so as to release the spindle 138 from any tensile force when the release of the drilling rod 54 of the tap hole.
  • the means shown in Figure 8 to secure the piercing rod 54 of the coupling 102 include a male thread 140, machined in the free end of the piercing rod 54, and a corresponding female thread, machined in the front end of the rotary member 136.
  • FIGS. 10, 11, 12 and 13 show a variant using for the extraction of the piercing rod 54 a jaw clamp 150.
  • This jaw clamp 150 is integrated in the first carriage 32, on which the finger 42 is articulated. It will be noted that the jaw clamp 150 must be provided with a passage channel 152 for the piercing rod 54, which is dimensioned so as to allow the passage of said guide means during the operation of introducing the rod of drilling 54 using finger 42 (see Figures 10 and 11). In this way, the jaw clamp 150 can remain in place on the carriage 32 during the operation of introducing the piercing rod 54 into the plugging mass.
  • the guide means 68, 70 are of course spaced from the path of the clamp, and the finger 42 is folded up (see Figures 12 and 13).
  • the rod can now be gripped firmly by pairs of jaws 154 disposed along said passage channel 152.
  • Figures 14, 15, 16 and 17 show a variant using for the extraction of the piercing rod 54 a clamp 160 formed of two hooks 162 and 164 juxtaposed and articulated both about a transverse axis 166 in said first carriage 32.
  • the hook 162 has at its lower end a bead 56 ', equivalent to said cylindrical bead 56 of the finger 42. This bead 56 'can penetrate into the guide channel 64 to bear on the free end of the piercing rod 54 in order to push the latter into the blocking mass.
  • the hook 162 consequently fulfills, during the operation of introducing the piercing rod 54 into the plugging mass, the role of the finger 42 shown in FIGS. 4 and 5.
  • FIG. 16 it can also be seen that , for the rod insertion operation, the two hooks 162 and 164 are locked by a removable stop 168 in a folded position. In this position, said cylindrical bead 56 ′ is in alignment with the guide channel 64, and the hook 164 is completely folded down in the first carriage 32.
  • the removable stop 168 constitutes at the same time a counter-support for the hook 162, when the cylindrical bead 56 'of the latter bears on the end of the piercing rod 54 to exert an axial thrust on the latter.
  • the means defining the guide channel 64 are folded down (see Figure 14) and the removable stop 168 is removed, so that the hooks 162 and 164 can be engaged behind a shoulder 170 integral of the free end of the piercing rod 54. It will be noted that the hook 164 is locked in this position by a removable transverse rod 172.
  • a pneumatic cylinder 174 integral with the first carriage 32 pushes the hook 162 against the piercing rod 54 and thus closes the clamp 160 behind the shoulder 170.
  • the second hook 164 is pushed against the transverse rod 172 which consequently serves as a counter support or reaction element to the clamp 160.
  • the ends of the two hooks 162 and 164 advantageously have the shape of annular segments circumferentially matching the piercing rod 54, so as to increase the contact surface between the clamp 160 and the piercing rod 54, and thus reduce the risk of the shoulder 170 being torn off when the piercing rod 54 is released from the tap hole.
  • the carriage 10 advantageously comprises an intermediate support 110.
  • This intermediate support consists of a hook 112 mounted on a third carriage 114 sliding with the aid of two pairs of rollers 116, 118 in the same rails 110, 112 as the working tool 100 (cf. Figures 6 and 7).
  • This third carriage 114 is preferably linked to the first carriage 32 by means of two rods 120, 122 which are fixed to the third carriage 114 and slide in guide bushings 124, 126 of the first carriage 32 and of the working member
  • the purpose of these rods 120, 122 is to automatically remove the intermediate support 110 from the front of the carriage to the middle of the carriage, that is to say to put it in safety before the drilling rod 54 is not completely removed from the tap hole.
  • This intermediate support 110 is used to support the piercing rod removed from the tap hole. This same support 110 can however also be useful for mounting / dismounting a drill bit on the working member.
  • the hook 112 of the intermediate support 110 is advantageously folded up so as not to hinder the positioning of said guide means 68, 70.
  • the hook 112 is mounted on the carriage 114 by means of a cylindrical articulation 128 and can be immobilized in the folded position by a pin 129, respectively by equivalent means.
  • a fixed support 130 at the front of the mount is preferably a screen support of the type proposed in European patent application EP 0 064 644.
  • This comprises two flaps mounted at the front of the mount 10, that is to say in front of the tap hole when the carriage is in the operative position. These flaps can pivot between an open position, facilitating the gripping of the piercing rod 54 with a view to releasing the latter from the taphole and a closed position, in which they define a support for the rod 54 and a protective shield. against splashing from the jet coming out of the tap hole when the latter is opened.
  • the drilling machine according to the present invention can also be produced with other drive means than a hydraulic motor driving an endless chain.
  • Another possible drive system is a screw-nut system, in which the nut is fixed in rotation and the screw which extends along the mounting, is fixed in translation. A rotation of the screw consequently causes the translation of the nut.
  • This nut can directly support the finger 42 or else drive the first carriage 32 supporting the finger 42.
  • the finger 42 does not necessarily have to be mounted on a carriage 32 which slides in rails in the box 14 forming the mount 10.
  • Any guide means making it possible to keep the finger 42 in the axis of the rod when moved along the carriage is to be considered in the sense of the present invention as a means perfectly equivalent to the carriage / rail system.
  • the finger 42 is directly mounted on the drive means itself.
  • the term "carriage" designates, therefore, most generally a machine part which supports and displaces another machine element.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Earth Drilling (AREA)
  • Punching Or Piercing (AREA)
EP93108260A 1992-06-17 1993-05-21 Schachtofenabstichmaschine Expired - Lifetime EP0574729B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
LU88135 1992-06-17
LU88135A LU88135A1 (fr) 1992-06-17 1992-06-17 Machine de percage d'un trou de coulee d'un four a cuve
LU88167 1992-09-02
LU88167A LU88167A7 (fr) 1992-06-17 1992-09-02 Machine de perçage d'un trou de coulée d'un four à cuve

Publications (2)

Publication Number Publication Date
EP0574729A1 true EP0574729A1 (de) 1993-12-22
EP0574729B1 EP0574729B1 (de) 1998-12-02

Family

ID=26640346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108260A Expired - Lifetime EP0574729B1 (de) 1992-06-17 1993-05-21 Schachtofenabstichmaschine

Country Status (14)

Country Link
US (1) US5351939A (de)
EP (1) EP0574729B1 (de)
JP (1) JPH0688111A (de)
KR (1) KR100253683B1 (de)
CN (1) CN1036209C (de)
AU (1) AU656472B2 (de)
CA (1) CA2098564A1 (de)
CZ (1) CZ283022B6 (de)
DE (1) DE4317436C2 (de)
ES (1) ES2125929T3 (de)
GB (1) GB2267956B (de)
PL (1) PL172793B1 (de)
RU (1) RU2094469C1 (de)
SK (1) SK59693A3 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88059A1 (fr) * 1992-01-27 1993-08-17 Paul Wurth S.A. Machine de percage d'un trou de coulee d'un four a cuve
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
JP5785838B2 (ja) * 2011-09-27 2015-09-30 新日鉄住金エンジニアリング株式会社 閉塞開孔方法および閉塞開孔装置
CN105903992B (zh) * 2016-06-23 2021-12-14 中钢集团西安重机有限公司 一种螺杆调节式钻杆夹持机构
US20220178615A1 (en) * 2019-03-13 2022-06-09 Tmt Tapping Measuring Technology Sàrl Taphole plugging gun

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US2705630A (en) * 1955-04-05 Tad deo
DE3111260A1 (de) * 1981-03-21 1982-09-30 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Stichlochbohrmaschine
EP0064644A1 (de) * 1981-05-05 1982-11-17 Paul Wurth S.A. Führungs- und Positioniermechanismus für die Bohrstange des Abstichloches am Schachtofen und Stichlochbohrmaschine mit einem solchen Mechanismus
GB2116898A (en) * 1982-02-03 1983-10-05 Wurth Paul Sa Device for coupling a shaft furnace tap hole drilling rod to the working tool of a drilling machine
GB2216827A (en) * 1988-04-06 1989-10-18 Wurth Paul Sa Taphole drilling machine
EP0379018A2 (de) * 1989-01-16 1990-07-25 Paul Wurth S.A. Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens
US5069430A (en) * 1990-10-26 1991-12-03 Woodings Industrial Corporation Blast furnace tap hole drill with centralizing drill rod support

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
LU86963A1 (fr) * 1987-08-04 1989-03-08 Wurth Paul Sa Machine de percage d'un trou de coulee de four a cuve
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
SU1633251A1 (ru) * 1989-04-25 1991-03-07 Новолипецкий металлургический комбинат им.Ю.В.Андропова Устройство дл обработки летки электропечи
ES2091979T3 (es) * 1991-06-17 1996-11-16 Nippon Steel Corp Maquina para la perforacion de orificios de colada.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705630A (en) * 1955-04-05 Tad deo
DE3111260A1 (de) * 1981-03-21 1982-09-30 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Stichlochbohrmaschine
EP0064644A1 (de) * 1981-05-05 1982-11-17 Paul Wurth S.A. Führungs- und Positioniermechanismus für die Bohrstange des Abstichloches am Schachtofen und Stichlochbohrmaschine mit einem solchen Mechanismus
GB2116898A (en) * 1982-02-03 1983-10-05 Wurth Paul Sa Device for coupling a shaft furnace tap hole drilling rod to the working tool of a drilling machine
GB2216827A (en) * 1988-04-06 1989-10-18 Wurth Paul Sa Taphole drilling machine
EP0379018A2 (de) * 1989-01-16 1990-07-25 Paul Wurth S.A. Verfahren und Vorrichtung zum Öffnen des Abstichloches eines Schlachtofens
US5069430A (en) * 1990-10-26 1991-12-03 Woodings Industrial Corporation Blast furnace tap hole drill with centralizing drill rod support

Also Published As

Publication number Publication date
SK59693A3 (en) 1994-01-12
JPH0688111A (ja) 1994-03-29
CN1036209C (zh) 1997-10-22
US5351939A (en) 1994-10-04
GB9310794D0 (en) 1993-07-14
CZ106693A3 (en) 1994-01-19
KR100253683B1 (ko) 2000-04-15
CZ283022B6 (cs) 1997-12-17
GB2267956A (en) 1993-12-22
RU2094469C1 (ru) 1997-10-27
AU3996193A (en) 1993-12-23
PL299365A1 (en) 1994-01-10
PL172793B1 (pl) 1997-11-28
DE4317436C2 (de) 2002-07-18
EP0574729B1 (de) 1998-12-02
GB2267956B (en) 1996-01-03
CN1083114A (zh) 1994-03-02
CA2098564A1 (fr) 1993-12-18
ES2125929T3 (es) 1999-03-16
DE4317436A1 (de) 1993-12-23
AU656472B2 (en) 1995-02-02

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