EP0574729B1 - Machine de perçage d'un trou de coulée d'un four à cuve - Google Patents

Machine de perçage d'un trou de coulée d'un four à cuve Download PDF

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Publication number
EP0574729B1
EP0574729B1 EP93108260A EP93108260A EP0574729B1 EP 0574729 B1 EP0574729 B1 EP 0574729B1 EP 93108260 A EP93108260 A EP 93108260A EP 93108260 A EP93108260 A EP 93108260A EP 0574729 B1 EP0574729 B1 EP 0574729B1
Authority
EP
European Patent Office
Prior art keywords
carriage
rod
mounting
taphole
machine according
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
EP93108260A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0574729A1 (fr
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/fr
Application granted granted Critical
Publication of EP0574729B1 publication Critical patent/EP0574729B1/fr
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 drilling and opening machine of a tap hole in a wall of a shaft furnace by a process in which, after closing the tap hole with a plugging mass, we push it in, before its complete hardening, a rod and we extract it, when needed, to open the tap hole.
  • a machine includes an adjustable carriage in front of the wall of the shaft furnace in a working position in the extension of the axis of the tap hole, a first carriage movable along this carriage, a means of training for said first carriage driving this carriage along this lookout.
  • a striker as used on these machines, is not without drawbacks. First it imposes significant stresses and vibrations on the equipment, in particular by means of coupling of the rod to the member of work, which is therefore subject to rapid wear. A striker is also extremely noisy and does not fill often not the increasingly stringent standards for a reduction of noise level in an industrial environment.
  • Document US-A-5,069,430 describes a machine for drill a tap hole in the plugging mass completely hardened with a drill driven rotation.
  • This drill includes a shank, which is formed of two coupled segments, and a cutting head with the front end of the rod.
  • the drilling machine includes a carriage which supports an impact drill, coupled to the free end of the rod, and a front support, supporting the rod at the front of the lookout. Centering support for the drill is mounted between the front support and the drill.
  • an endless chain advances the drill and centering support towards the end before the lookout. When the centering support reaches near the front support, it is decoupled from the chain endless, so that the drill can continue its forward run of the lookout.
  • the purpose of the present invention is to provide a machine for drilling and opening a tap hole of a shaft furnace, which allows to insert said rod into the mass semi-hardened shutter by exerting a powerful push on the free end of the rod, without cause it to buckle, and that doesn't show the disadvantages mentioned above.
  • the drilling rod slides in the guide channel into which the finger can penetrate which is integral with the carriage driven along the carriage by the powerful means of training.
  • the guide means must be dimensioned so as to not allow a radial escape of the rod of said channel.
  • said channel guidance may have axial discontinuities and radial, as long as a radial exhaust from the metal rod subjected to the axial thrust force is not to fear.
  • the main advantage of this machine is ability to safely insert piercing rod in the blocking mass by a force exerted on its free end without having to use a noisy striker, imposing significant vibrations on the material and machine.
  • the present guide channel must not be removed as the finger advances, secured to the carriage which can be moved along the carriage. He will be as appreciated as the only element that must be movable according to the present invention is the carriage which supports the finger penetrating inside the canal. Indeed the means guide defining the rod guide channel metallic do not hinder the advancement of the finger secured to the movable carriage and can therefore remain in place during the whole operation of introducing the stem.
  • Said guide means could however still be troublesome during the rod extraction operation with classic pliers, or whenever you want work with a conventional drill that can be moved along the lookout to drill the tap hole with a drill. here why it is advantageous to support said means of support by means of arms articulated on the carriage.
  • This solution allows to pivot laterally said guide means, releasing, if necessary, the template necessary along the carriage to extract the rod to using conventional pliers, or to work with a drill sliding along the carriage.
  • This pivoting or folding of said guide means into a position lateral to the lookout has the added advantage to remove said guiding means from the most dangerous in front of the tap hole, which is naturally the one located directly in the extension of the axis of the jet when opening the tap hole.
  • the rod guide channel 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 a wall radially along its wall on its entire length. It is an achievement particularly simple and inexpensive of said means of guidance.
  • the longitudinal slot allows the penetration of said finger inside the tube so that it can exert a axial thrust on the end of the rod during advancement of the carriage along the lookout towards the tap hole.
  • the loading of the metal rod into the channel guiding can naturally be done axially by pressing 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 lay freely the rod in its guide channel.
  • said guide means can for example consist of longitudinal parts which are juxtaposed to define together said guide channel.
  • the tube serving as guide means is split longitudinally into a first and second segment of tube. This way the tube can be opened longitudinally to put the metal rod and closed to form said guide channel.
  • the first tube segment is then advantageously mounted on first arms articulated along a first lateral side of the carriage and the second tube segment is mounted on second arms articulated along the opposite lateral side of the lookout.
  • This assembly makes it possible to pivot the first segment of tube and the second tube segment laterally in opposite directions to open said channel. In the open position of the channel we can then easily place the metal rod in one of the two tube segments, then reconstitute the guide channel by pivoting the two tube segments in their original position. It will be noted that this assembly also frees up a certain size between the two tube segments.
  • This template can 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 cylinders. This or these cylinders maintain the guide channel in the axis of the tap hole during the driving-in operation of the rod and allow the guide means to be folded down when these are not used. They can be mounted in an area protected from the lookout and can be effectively protected against splashes.
  • Said means of driving the first carriage must be able to move the latter along the lookout tap hole direction, exerting by the intermediary of the finger sufficient force on the free end of the drill rod to pass the other end through the blocking mass in train to harden in the tap hole.
  • this means drive includes an endless chain which is driven by a hydraulic motor. It is a way particularly simple training which can however deliver significant training efforts. Moreover 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 reform or move the tap hole, or to work with a conventional drill when the rod process lost cannot be used for any reason.
  • it is advantageous to provide means for coupling said working member to the drive means of the first cart. This avoids having to install a second drive system on the machine.
  • the present machine in this case includes means for firmly coupling the free end of the rod to said drive means.
  • the latter removes the rod of the tap hole by a forceful backward movement, that is to say without producing vibrations and in a way completely silent.
  • the coupling means used for the extraction of the rod can for example include a hook which is mounted on said first carriage. This hook then engages through said opening longitudinal of the guide channel to support behind a machined shoulder in the free end of the rod.
  • the present machine includes in a preferential execution an intermediate support sliding on and movable along the carriage, which allows to support a rod or a drill in the absence of the guidance.
  • a screen mounted at the front of the mount protects the machine effectively against splashes from jet coming out of the tap hole.
  • Figures 1 and 2 show a lookout 10 of a drilling machine.
  • This lookout 10 is for example supported at the end of a support arm (not shown) via a central part 12 secured to the carriage 10.
  • This support arm can pivot so classic and known around a console (not shown) to move the carriage between a garage position and a working position and vice versa.
  • the lookout 10 can be oriented in front of the wall of the oven so that its longitudinal axis is located in the extension of the axis of the tap hole.
  • the carriage can for example be formed of several metal beams or profiles welded together for 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.
  • This endless chain 24 is stretched between a wheel driven gear 26 mounted at the front of the carriage 10 and a wheel driving gear 28 mounted at the rear of the carriage 10.
  • the wheel driving 28 is driven by at least one motor 30 fixed on the lookout 10. It is preferably a hydraulic motor whose direction of rotation can be reversed by a system of suitable order.
  • first carriage 32 which is driven by said endless chain 24.
  • This first carriage 32 is shown in more detail in Figure 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 (see Figure 5), are an integral part of the walls side 16, 18 of 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 lookout 10.
  • This finger 42 is preferably mounted in the carriage 32 using a pin cylindrical 46, housed in bores 48, 50 of the carriage 32 and passing through a bore 52 of the trunk 44, so as to ability to rotate 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 rod drilling 54.
  • the latter was installed in the drilling machine to be driven into a mass of plugging which has been previously injected into the casting.
  • the lower end of the finger 42 which is supported on the rod 54 has the shape of a cylindrical bead 56 which extends in the extension of the axis of the rod 54.
  • finger 42 has an extension 58 of its trunk 44 on the other side of the cylindrical axis 46. This extension 58 is supported 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 rotate in the direction of clockwise, i.e. clockwise arrow marked with the reference 62.
  • the rod is guided in a channel 64 formed by a tube cylindrical 66.
  • This tube 66 which has substantially the same length as the stem and an inner diameter slightly larger than the diameter of the rod, consists of preferably two tube segments 68, 70 which are almost symmetrical about a plane passing through the axis longitudinal of the tube.
  • Each of the two segments 68, 70 is supported by several bent arms 72, 72 '.
  • Arms bent 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. Figures 1 and 3).
  • This tube 74 is mounted, for example at middle and at its two ends, via of cylindrical joints 76 on this first wall side 16, so that it can pivot around its longitudinal axis.
  • the bent arms 74 'supporting the second tube segment 70 are mounted identically along from the opposite side wall 18 of the carriage 10.
  • the elements involved in mounting the second segment of tube 70 are identified by the same reference numbers as the mounting elements of the first tube segment 68, provided however of an accent.
  • the tube 66 formed by juxtaposition of the two segments of tube 68, 70 is provided with a longitudinal slot 78 radially crossing its wall on its entire length.
  • this slot 78 faces the longitudinal opening 22 in the lookout 10.
  • the finger can penetrate with its flat trunk 44 through slot 78 inside the tube 66, in which the bead 56 can slide freely when the first carriage 32 is moved along on the lookout 10.
  • the latter has advantageously a constriction 80.
  • This constriction 80 allows the width of the slot 78 to be limited, so as to prevent the rod 54 from being able to get caught in the slot 78 when finger 42 exerts an axial thrust on the end of the latter.
  • FIG 3 the two tube segments 68, 70, defining channel 64 when they are juxtaposed one against each other, are shown separated from each other.
  • This arrangement is obtained by pivoting the tube 74, supporting through the bent arms 72 the first segment of tube 68, and by pivoting of tube 74 ', supporting by through the bent arms 72 'the second segment of tube 70, around their respective axis and in opposite directions.
  • This pivoting is advantageously produced 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 cylinders 82, 84 are arranged laterally the carriage, at mid-length of the tubes 74, 74 'so as to be shelter from splashes of cast iron projected outside the tap hole when opened. They can also have a protective cage (not shown) which does not interfere at all with this location of the lookout 10.
  • Each of the two cylinders 82, 84 is articulated according to the rules of the art with one of its ends on a support 86 integral with the lookout 10, and with the other end on an arm of lever 88, 88 ′ respectively secured to the first tube 74 or the second tube 74.
  • the arm of lever 88, 88 ' is an extension of a bent arm 72, 72'.
  • an extension of the two cylinders 82, 84 causes a bringing together of the two segments of tubes 68, 70, up to their meeting at the level of the longitudinal median plane of the carriage 10. In this position, shown in Figure 5, the two cylinders push the two tube segments 68, 70 firmly against each other to define the channel of guide 64.
  • a retraction of the two cylinders 82, 84 causes a spacing of the two tube segments 68, 70 (cf. FIG. 3) and the longitudinal opening of channel 64 so that can easily install the rod 54 in one of the two tube segments.
  • This one, in figure 3 it is about line segment 70, is then advantageously provided with claws 90 to support the rod 54.
  • These claws 90 are axially spaced, as shown in Figures 1 and 2, and penetrate during the assembly of the two segments of tube 68, 70 in corresponding notches 92 made in the other segment of tube 68.
  • the two tube segments 68, 70 are parts that can be produced at low cost, starting from longitudinally cut steel tubes. These segments of tube are preferably removably attached to the bent arms 72, 72 ′, for example using legs 94 welded onto the pipe segments and screwed onto the arms angled 72, 72 '. Such a tab 94 is shown in level of the left arm 72 of FIG. 3. This assembly allows easily replace the tube segments 72, 72 ' when accidentally damaged in front of the lookout 10 by the cast iron leaving the tap hole.
  • This work member 100 usually comprises a drill and a striker. His presence is justified for ability to drill tap hole where appropriate classic drill. This can for example be the case when want to reform or move the tap hole, or when cannot use the lost rod process for a reason or for another.
  • the working member 100 is provided a mandrel 102 which can be coupled to a drill. At this end, 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 segments of tube 68, 70 are spread laterally to release the template required 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 the latter are fixed in the box 14, parallel below rails 38, 40 supporting the first carriage 32. They have U-shaped sections and are arranged 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 force extraction of the rod, when fitted with adequate coupling means 102 to mate at 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 on said coupling means, so as to avoid transmission of the tractive effort through the mechanics of the working organ.
  • This organ may for example be a fork 105 integral with said extension 58 of finger 42 articulated on the first carriage 32 (see Figure 4).
  • the fork 105 When extracting the rod 54, the fork 105 then rests on a shoulder 106 of the coupling 102 mounted on the work 100 to exert an axial thrust on the latter in the direction of extraction of the rod 54.
  • FIGS. 8 and 9 An interesting variant for training the working member 100 is shown in FIGS. 8 and 9.
  • Figure 8 we see that the fork 105, integral with the finger 42 articulated on the first carriage 32, is blocked by a transverse rod 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 shoulder before 130 to 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 integral with a end of the chassis of the working member 100.
  • this cage can rotate freely a rotary member 136 integral 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 takes support the fork 105 during the training of the organ of 100 work forward from the lookout.
  • the means shown in Figure 8 to secure the piercing rod 54 of coupling 102 include 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 drilling rod 54 a jaw clamp 150.
  • This jaw clamp 150 is integrated in the first carriage 32, on which is articulated finger 42.
  • the pliers jaws 150 must have a passage channel 152 for the drilling rod 54, which is dimensioned so as to allow the passage of said guide means during the operation of introducing the piercing rod 54 to using finger 42 (see Figures 10 and 11).
  • the jaw clamp 150 can remain in place on the carriage 32 during the insertion operation of the rod drilling 54 in the plugging mass.
  • the guide means 68, 70 are of course moved away from the gripper path, 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 channel of passage 152.
  • Figures 14, 15, 16 and 17 show a variant using for the extraction of the drilling rod 54 a clamp 160 formed by two hooks 162 and 164 juxtaposed and both articulated around a transverse axis 166 in said first carriage 32.
  • the hook 162 comprises at its lower end a bead 56 ', equivalent said cylindrical bead 56 of finger 42.
  • This bead 56 ' can penetrate the guide channel 64 to rest on the free end of the rod hole 54 in order to push it into the mass of capping.
  • the hook 162 fills accordingly, when the operation of inserting the piercing rod 54 into the blocking mass, the role of finger 42 represented on the Figures 4 and 5.
  • both hooks 162 and 164 are locked by a removable stop 168 in a folded position.
  • said cylindrical bead 56 ' is aligned with the guide channel 64, and the hook 164 is completely folded back into the first carriage 32.
  • the removable stop 168 at the same time constitutes a counter-support for the hook 162, when the cylindrical bead 56 'of this last rests on the end of the rod drilling 54 to exert an axial thrust on this last.
  • the means defining the guide channel 64 are folded down (cf. Figure 14) and the removable stop 168 is removed, so that hooks 162 and 164 can be engaged behind a shoulder 170 secured to the free end of the rod drilling 54. It will be noted that the hook 164 is blocked in this position by a removable transverse rod 172.
  • a pneumatic cylinder 174 integral with the first carriage 32 pushes hook 162 against the rod drilling 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 have advantageously the shape of annular segments matching circumferentially the piercing rod 54, so that increase the contact surface between the clamp 160 and the drill rod 54, and thereby reduce the risk tearing off of the shoulder 170 when the drilling rod 54 of the tap hole.
  • the lookout 10 advantageously includes a support intermediate 110.
  • This intermediate support consists of a hook 112 mounted on a third carriage 114 sliding using 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 via 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 the working member 100.
  • the purpose of these rods 120, 122 is to automatically remove the support intermediate 110 from the front of the carriage towards the middle of the lookout, that is to put it in safety before the drilling rod 54 is not completely removed from the hole casting.
  • This intermediate support 110 is used to support the drill rod removed from the tap hole. This same support 110 can however also be useful for assembly / disassembly of a drill on the working member.
  • the hook 112 of the intermediate support 110 is advantageously folded up so as not to interfere the establishment of said guide means 68, 70. At this end the hook 112 is mounted on the carriage 114 using a cylindrical joint 128 and can be immobilized in the position folded down by a pin 129, respectively by equivalent means.
  • a fixed support 130 at the front of the carriage is preferably a screen support of the type proposed in the request of European patent EP 0 064 644.
  • This comprises two flaps mounted at the front of the carriage 10, i.e. opposite of the tap hole when the carriage is in position operative. These flaps can rotate between a position open, facilitating the gripping of the drilling rod 54 in view of its release from the tap hole and a closed position, in which they define a support rod 54 and a protective shield against splashes from the jet coming out of the tap hole when opening it.
  • the drilling machine according to the present invention can also be carried out with other drive means that a hydraulic motor driving an endless chain.
  • a hydraulic motor driving an endless chain.
  • We can for example use different types of cylinders, including a cylinder telescopic or a stroke cylinder C which acts on the carriage 32 via a multiplier race to move it over a distance 2C along the lookout.
  • Another possible training system is a screw-nut system, in which the nut is fixed in rotation and the screw which extends along the carriage, is fixed in translation. A rotation of the screw results accordingly the translation of the nut.
  • This nut can directly support finger 42 or train the first carriage 32 supporting finger 42.
  • the finger 42 must not necessarily be mounted on a carriage 32 which slides in rails in the box 14 forming the carriage 10. All guide means for holding 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. In some cases it is even perfectly conceivable that finger 42 is directly mounted on the means even training. In these cases it is perfectly in the spirit of the present invention to assimilate to said first carriage 32 the means used to make the finger 42 of said drive means. Within the meaning of this invention the term "trolley" therefore designates most generally a piece of machine that supports and moves 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 Machine de perçage d'un trou de coulée d'un four à cuve Expired - Lifetime EP0574729B1 (fr)

Applications Claiming Priority (4)

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

Publications (2)

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

Family

ID=26640346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108260A Expired - Lifetime EP0574729B1 (fr) 1992-06-17 1993-05-21 Machine de perçage d'un trou de coulée d'un four à cuve

Country Status (14)

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

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
EP3938547B1 (de) * 2019-03-13 2023-02-15 Tmt - Tapping Measuring Technology Sàrl Stichlochstopfkanone

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705630A (en) * 1955-04-05 Tad deo
DE3111260C2 (de) * 1981-03-21 1992-06-11 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Stichlochbohrmaschine
LU83336A1 (fr) * 1981-05-05 1983-03-24 Wurth Paul Sa 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
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
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
LU87190A1 (fr) * 1988-04-06 1989-11-14 Wurth Paul Sa Machine de percage de trous de coulee d'un four a cuve
LU87427A1 (fr) * 1989-01-16 1990-07-24 Wurth Paul Sa Procede et dispositif d'ouverture du trou de coulee d'un four a cuve
SU1633251A1 (ru) * 1989-04-25 1991-03-07 Новолипецкий металлургический комбинат им.Ю.В.Андропова Устройство дл обработки летки электропечи
US5069430A (en) * 1990-10-26 1991-12-03 Woodings Industrial Corporation Blast furnace tap hole drill with centralizing drill rod support
EP0519397B1 (en) * 1991-06-17 1996-10-09 Nippon Steel Corporation Tap hole drilling machine

Also Published As

Publication number Publication date
CN1036209C (zh) 1997-10-22
RU2094469C1 (ru) 1997-10-27
US5351939A (en) 1994-10-04
GB2267956A (en) 1993-12-22
ES2125929T3 (es) 1999-03-16
AU3996193A (en) 1993-12-23
CA2098564A1 (fr) 1993-12-18
KR100253683B1 (ko) 2000-04-15
EP0574729A1 (fr) 1993-12-22
GB9310794D0 (en) 1993-07-14
GB2267956B (en) 1996-01-03
AU656472B2 (en) 1995-02-02
JPH0688111A (ja) 1994-03-29
PL172793B1 (pl) 1997-11-28
SK59693A3 (en) 1994-01-12
CZ283022B6 (cs) 1997-12-17
DE4317436A1 (de) 1993-12-23
DE4317436C2 (de) 2002-07-18
PL299365A1 (en) 1994-01-10
CN1083114A (zh) 1994-03-02
CZ106693A3 (en) 1994-01-19

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