EP2415881B1 - Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod - Google Patents

Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod Download PDF

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Publication number
EP2415881B1
EP2415881B1 EP10171867.4A EP10171867A EP2415881B1 EP 2415881 B1 EP2415881 B1 EP 2415881B1 EP 10171867 A EP10171867 A EP 10171867A EP 2415881 B1 EP2415881 B1 EP 2415881B1
Authority
EP
European Patent Office
Prior art keywords
drill rod
gripping device
claws
holding apparatus
stop
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.)
Not-in-force
Application number
EP10171867.4A
Other languages
German (de)
French (fr)
Other versions
EP2415881A1 (en
Inventor
Ralf Taugerbeck
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.)
TMT Tapping Measuring Technology GmbH
Original Assignee
TMT Tapping Measuring Technology GmbH
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 to EP10171867.4A priority Critical patent/EP2415881B1/en
Application filed by TMT Tapping Measuring Technology GmbH filed Critical TMT Tapping Measuring Technology GmbH
Priority to PCT/EP2011/062420 priority patent/WO2012016833A2/en
Priority to JP2013522186A priority patent/JP5876049B2/en
Priority to CN201180038351.6A priority patent/CN103052720B/en
Priority to BR112013002694A priority patent/BR112013002694A2/en
Priority to KR1020137004553A priority patent/KR101766881B1/en
Priority to RU2013105617/02A priority patent/RU2559617C2/en
Publication of EP2415881A1 publication Critical patent/EP2415881A1/en
Application granted granted Critical
Publication of EP2415881B1 publication Critical patent/EP2415881B1/en
Not-in-force legal-status Critical Current
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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/21—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/26—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/04—Ram or pusher apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools

Definitions

  • the invention relates to a holding device for a boring bar of a taphole drilling machine with the features of claim 1 and to a method for removing a boring bar from a boring bar receptacle of a taphole drilling machine having the features of claim 15.
  • Tap hole drilling machines are well known from the prior art and essentially serve to open a melt channel by drilling a blast furnace wall of a blast furnace.
  • the known tap hole drilling machines are essentially formed of a frame with a drilling and striking mechanism arranged thereon.
  • the drills and drums have a boring bar adapter for connecting a drill pipe several meters long.
  • the frame is designed in the manner of a carriage and, for example, rotatably and pivotably mounted so that it can be moved in front of a taphole of a blast furnace in a provided for a hole position.
  • the frame is also regularly with a front end a fastening device firmly fixed to the blast furnace.
  • a relatively large feed force can be applied during a drilling process via the boring bar.
  • the drilling and percussion mechanism causes a rotation of the drill rod together with a recurring impact pulse in the manner of a hammer drill.
  • An advance of the drill rod is carried out by a feed movement of the drilling and hammer mechanism in the longitudinal direction of the frame, so that the drill rod can penetrate deeper and deeper into the wall of the blast furnace. Since a boring bar can be several meters long, it is necessary to loosely support the boring bar at the front end of the rack.
  • various devices are known from the prior art, which are designed so that the drill rod can be easily changed, as well as learns a guide that ensures unobstructed rotation and feed the drill rod in any case.
  • a taphole drill that works on the lost rod procedure.
  • a drilling and hammer mechanism with a boring bar receptacle can be provided on the taphole drilling machine.
  • a gripping device is further arranged on a movable carriage on the frame of the taphole drill. The gripping device serves to guide the drill rod when driving into the taphole.
  • the WO 2010/094571 A1 shows a tap hole drilling machine which has a Bohrstangen Adjustment and a centering device. With the drill rod guide and the centering a guide of the drill rod during driving and pulling out of a tap hole is effected.
  • the GB 2260189 A also describes a tap hole drilling machine with a drilling and striking mechanism, a boring bar and a gripping device for holding the boring bar.
  • the gripping device is also designed here for guiding the drill rod and does not allow it to be fixed to a frame of the taphole drill.
  • FIG. 1 Another taphole drilling machine for use with a lost rod discloses the DE 42 07 491 A1 , Here, for a propulsion of the rod or for pulling out of a tap hole a drilling and striking mechanism, which can also serve for use with a boring bar and a gripping device is used.
  • the gripping device is movably formed in a frame of the taphole drilling machine and has clamping elements with which the rod is fixed to a frame. An insertion or extraction of the rod from the needle hole is done by alternately clamping or moving the rod with the drilling and striking mechanism and the gripping device.
  • the EP 0 064 644 A1 concerns a similar tap hole drilling machine with a lost rod and a drilling and striking mechanism, here a gripping device only serves to guide the rod when pulling it out of a needle hole.
  • the present invention is therefore based on the object of proposing a holding device for a boring bar of a taphole drilling machine and a method for removing a boring bar from a boring bar receptacle of a taphole drilling machine which does not require manual handling for removing a boring bar from a boring bar receptacle, wherein the holding device nevertheless should be particularly simple.
  • the invention relates to a holding device for a boring bar of a taphole drilling machine, wherein the taphole drilling machine has a frame with a movably arranged drilling and striking mechanism, wherein the drilling and striking mechanism has a boring bar receptacle for connecting the boring bar, wherein a gripping device of the holding device is arranged on the frame is, wherein the gripping device for supporting the boring bar relative to the Bohrstangenfact, and wherein by means of the gripping device, the boring bar is fixed to the frame, wherein the holding device comprises a drive means which can cause pivoting of the gripping device, wherein the gripping device comprises claws, wherein the Claws may be so far apart in an open position, such that the drill rod is released, wherein the claws can engage around the drill rod in a closed position, such that the boring bar is guided by the claws, and w obei the jaws can embrace the drill rod in a clamping position, such that the drill rod between the claws force and / or positively fixed.
  • the gripping device fix the boring bar relative to the frame at this rotationally fixed or fix so that a feed movement of the boring bar is no longer possible.
  • the drill rod should have jammed in the Bohrstangenamide, thus no additional tool or personnel is required because a tool for holding or clamping the boring bar provided by the gripping device, or is formed.
  • the fixation of the drill rod relative to the frame it is basically irrelevant at which point of the frame, the drill rod is fixed.
  • the gripping device is arranged on an end of the frame which faces a stitch hole and is opposite the drilling and impact mechanism.
  • the gripping device can then be designed so that it also serves to guide the drill rod.
  • a possibly eccentric or eccentric running of the boring bar when drilling a blast furnace wall can be avoided.
  • the gripping device may, for example, comprise clamping elements which can positively and / or positively fix the boring bar.
  • the clamping elements can be designed so that they clamp the drill rod by means of frictional engagement.
  • An intended for installation on the drill rod Surface of the clamping elements can be provided, for example, with a toothing.
  • the clamping elements may also have pointed or wedge-shaped projections which can penetrate positively into a surface of the drill rod.
  • the gripping device on claws which can embrace the boring bar, such that the boring bar is guided by the claws.
  • the claws can serve as a guide for the boring bar, without any fixation of the boring bar by means of the claws.
  • the claws may be such that they are pivotable in addition to an enclosure of the drill rod so that the drill rod is released by the Klausen and is easily replaceable.
  • the clamping elements are respectively arranged on the jaws and firmly connected thereto. Depending on the position of the jaws relative to the drill rod, the clamping elements can firmly abut against this and thus fix the boring bar, or be spaced from the boring bar, so that the boring bar is guided between the claws.
  • the function of the clamping elements can be adjusted so easily over a distance of the jaws relative to the drill rod.
  • the holding device a drive device which can cause a pivoting of the gripping device in an open, close, or clamping position.
  • an open position for example, claws can be spaced apart from one another such that no guidance of the drill rod between the claws takes place and the boring bar can be easily removed.
  • a closed position the jaws surround the drill rod so far that the drill rod is guided between the jaws, and in a clamping position, the jaws can be approximated as far as the drill rod that the drill rod between the jaws or between attached to the jaws clamping elements and / or positively fixed.
  • the drive device can enable a simple, automated and possibly automated transfer of the gripping device into these positions.
  • the drive unit may be formed of a lever gear, a drive shaft and an actuating cylinder, wherein the actuating cylinder is coupled to the drive shaft such that the drive shaft is rotatable by means of the confirmation cylinder, and wherein the drive shaft is so coupled to the lever gear, the lever mechanism by means of Drive shaft can cause the pivoting of the gripping device.
  • the actuating cylinder may be a hydraulic cylinder which rotates or pivots the drive shaft at a certain angle of rotation. This rotation of the drive shaft can be further transmitted to the lever gear, so that the lever mechanism causes an actuation of the gripping device.
  • the opening, closing, or clamping position can be adjusted by different rotational angle positions of the drive shaft.
  • the use of a drive shaft allows a spatial separation of gripping device and actuating cylinder, since the actuating cylinder should be protected from the influence of temperature and removed as far as possible from the blast furnace wall.
  • the holding device can have an adjusting device by means of which the closing or clamping position can be adjusted.
  • a stop for limiting a rotation of the drive shaft can be formed between the drive unit and the adjusting device.
  • the drive shaft is then rotatable by means of the actuating cylinder only up to a certain angle of rotation until the closing or the clamping position of the gripping device is reached.
  • the stop may for example also include a screw that allows fine adjustment of the stop.
  • crank lever may, for example, be rigidly secured to one end of the drive shaft, wherein the actuating cylinder can engage one end of the crank lever and pivot it about the drive shaft.
  • the stop can be particularly easily formed between the crank lever and the adjusting device. The stop can then easily limit a pivoting movement of the crank lever and thus a rotational angle of the drive shaft.
  • the adjustment can have a stop element for forming the stop, wherein the stop element may have a closing stop for forming the closed position and a clamping stop to form the clamping position, wherein the stop element between a closing or Clamping position is movable, such that the closing stop or optionally the clamping stop forms the stop.
  • the stop element can therefore form two stops, which, depending on the desired position of the gripping device, the respectively suitable stop of the stop element is used.
  • the stop element can be formed, for example, as a rod which forms the closing stop and the clamping stop and can be moved along its longitudinal axis so that the closing stop or the clamping stop is used as a stop.
  • the thus formed stop can then limit a rotational angle of the drive shaft, or set and allows a selection between the closing or clamping position of the gripping device by a simple displacement of the stop element.
  • the closing or clamping stop can be formed by dispensing with a physical formation of one of these stops on the setting device. The relevant stop can then be formed by the maximum stroke of the actuating cylinder.
  • the adjusting device may comprise a spring, by means of which the stop element is movable into the closed position. This can be ensured that, if no specific position was selected by means of the adjustment, always the closing stop forms the stop and the gripping device is in the closed position.
  • the spring may be formed as a tension or compression spring, which causes a displacement or related movement of the adjusting.
  • the adjusting device has a locking unit, by means of which the stop element can be locked in the closed or clamping position.
  • the locking unit may for example be formed from a lever element which is locked or pivoted in a respective desired position of the stop member so that the locking unit fixes the stopper member positively and prevents the same unwanted displacement.
  • the tap hole boring machine has a frame with a drilling and impact mechanism arranged thereon, wherein the boring and striking mechanism has the boring bar receptacle for connecting the boring bar, wherein a gripping device is arranged on the frame wherein the gripping device supports the drill rod relative to the drill rod receiver, the gripper comprising claws (30), the claws engaging around the drill rod in a closed position, such that the drill rod is guided by the claws, the claws engaging around the drill rod in a clamping position in such a way that the drill rod is clamped between the jaws, wherein the drill rod is firmly fixed to the frame by means of the gripping device, and wherein the drill rod receiver is in a direction opposite to the feed direction relative to the gripper device Direction is moved so that the drill rod is removed from the Bohrstangenfacta, and wherein the claws are spaced in an open position so far apart that the boring bar is released
  • the tap hole drilling machine 10 has a base 12 and a positioning device 13 for moving and positioning a frame 14 arranged thereon with a boring bar 15 and a boring and percussion mechanism 16.
  • the boring bar 15 is inserted into a boring bar receptacle 17 of the boring and striking mechanism 16 and can be pushed forwards or backwards by a longitudinal movement of the boring and striking mechanism along the frame 14 in the direction of the blast furnace wall 11.
  • a fastening device 19 is arranged at a front end 18 of the frame 14, which fixes the frame 14 fixed to a holder 20 on the blast furnace wall 11. In particular, a precise tap hole can be performed.
  • a gripping device 21 is also arranged with a lever mechanism 22, wherein the lever mechanism 22 is connected via a drive shaft 23 with a not visible here actuating cylinder under a protective cover 24. Further, an adjusting device 25 is arranged at a rear end 26 of the drive shaft 23. The adjusting device 25 forms, together with the gripping device 21 and the lever mechanism 22, the drive shaft 23 and the actuating cylinder, a holding device 27 for the boring bar 15.
  • the boring bar 15 In the event that the boring bar 15 can not readily be removed from the boring bar receptacle 17, especially if it is jammed by plastic deformation in the boring bar receptacle 17, the boring bar 15 is clamped by means of the gripping device 21 to a front end 28 of the boring bar 15 and so firmly fixed relative to the frame 14.
  • the drilling and striking mechanism 16 is now moved in the direction of a rear end 29 of the frame 14 or pushed back so that the boring bar 15 is pulled out of the boring bar receptacle 17 by this relative movement.
  • Fig. 2a to 2c respectively.
  • Fig. 3a to 3c show several views of the gripping device 21, which is essentially formed from claws 30 and clamping elements 31.
  • the claws 30 are arranged relative to an axis of symmetry 32 of the gripping device 21 about axes 33 pivotally.
  • the lever mechanism 23, not shown in this view, is connected via joints 34 with the claws 30.
  • the drill rod 15 is received in the positions shown here in each case of the gripping device 21 between the jaws 30 so that they can not fall out.
  • the claws 30 can each be pivoted about the axes 33 so that the drill rod 15 is released.
  • the Fig. 2a or 3a show a clamping position of the gripping device 21, the Fig.
  • the claws 30 may be moved slightly apart so that the jaw spacing a is increased and a gap 37 is formed between the jaws 35 and the boring bar 15.
  • the drill rod 15 can then rotate in the gripping device 21 for a drilling operation and be advanced in the axial direction.
  • the gripping device 21 fulfills in this Position a leadership function. If the two clamping elements 31 are worn, they can be easily disassembled and replaced by means of screws 38 from the claws 30.
  • FIG. 4 to 8 shows a closer view of the adjustment 25.
  • the under the protective cover 24 located actuating cylinder 39 is connected via a hinge 40 with a crank lever 41, which in turn is fixedly connected to the drive shaft 23.
  • a movement of the actuating cylinder 39 thus enables a rotation of the drive shaft 23 by a rotation angle ⁇ , as from Fig. 4 seen.
  • On the crank lever 41 an adjusting screw 42 is further attached, here together with a stop element 43 of the adjusting device 25, a stop or closing stop 47 is formed.
  • the stop element 43 is formed as a rod 45 with a square cross-section and mounted longitudinally movably in a matching trained guide profile 46.
  • the closing stop 47 is designed to bear the adjusting screw 42 or a clamping stop not visible here.
  • a spring 49 is fixed to a front end 50 of the rod 45 so that the rod 45 in the in the 6 and 7 shown closed position of the stop element 43 is pulled.
  • a lever 52 is further arranged on an axis 53 on the rod 45, and rotatably connected thereto.
  • the axis 53 is inserted into a central bore 54 in the rod 45 and secured by means of an eyelet screw 55.
  • the eyelet screw 55 also serves to fasten the spring 49.
  • the adjustment device 45 By a movement of the lever in the here in the 6 and 7 shown with dashed lines clamping position of the stop member 43, the rod 45 is displaced against a spring force of the spring 49 in the direction of the rear end 51 so in the guide section 46 that the clamp stop is formed.
  • the adjustment device 45 further has an operator panel 56, which can take an operator from the respective position of the lever 52 or the closed or clamping position of the gripping device 21.
  • the lever 52 can continue to be pivoted about a Lekssache 57 of the rod 45, that the lever 52 can lock the rod 45 in the respective position or position.
  • the Fig. 9 shows a further embodiment of an adjustment 58, which has a lever 59 with a control panel 60, in contrast to the adjustment device described above.
  • the operation panel 60 two grooves 61 are formed, and the lever 59 can be respectively inserted by pivoting about the longitudinal axis 57 in the grooves 61, so that a respective position of the rod 45 by means of the lever 59 and the control panel 60 can be positively fixed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General 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)

Abstract

Holding device (27) comprises a gripping device, which is arranged on a mounting. A tap hole drilling machine (10) exhibits a mounting (11) having a movably arranged drill- and hammer mechanism (16). The drill- and hammer mechanism comprises a drill rod receptacle (17) for connecting the drill rod. The gripping device acts relative to drill rod receptacle for holding the drill rod. The drill rod is firmly fixed on the mounting by the gripping device. An independent claim is also included for removing the drill rod from drill rod receptacle of tap hole drilling machine, comprising moving the drill rod receptacle to the gripping device such that the drill rod is removed from the drill rod receptacle.

Description

Die Erfindung betrifft eine Haltevorrichtung für eine Bohrstange einer Stichlochbohrmaschine mit den Merkmalen des Anspruchs 1 sowie ein Verfahren zum Entfernen einer Bohrstange aus einer Bohrstangenaufnahme einer Stichlochbohrmaschine mit den Merkmalen des Anspruchs 15.The invention relates to a holding device for a boring bar of a taphole drilling machine with the features of claim 1 and to a method for removing a boring bar from a boring bar receptacle of a taphole drilling machine having the features of claim 15.

Stichlochbohrmaschinen sind aus dem Stand der Technik hinreichend bekannt und dienen im Wesentlichen zum Eröffnen eines Schmelzekanals durch Aufbohren einer Hochofenwandung eines Hochofens. Die bekannten Stichlochbohrmaschinen sind im Wesentlichen aus einem Gestell mit einem daran angeordneten Bohr- und Schlagwerk gebildet. Das Bohr-und Schlagwerk verfügt über eine Bohrstangenaufnahme zum Anschluss einer mehrere Meter langen Bohrstange. Das Gestell ist in Art einer Lafette ausgebildet und beispielsweise dreh- und schwenkbar so gelagert, dass es vor einem Stichloch eines Hochofens in eine für eine Bohrung vorgesehene Position bewegt werden kann. Zum Anbringen einer Bohrung wird das Gestell auch regelmäßig mit einem vorderen Ende mittels einer Befestigungseinrichtung am Hochofen fest fixiert. So kann bei einem Bohrvorgang über die Bohrstange eine relativ große Vorschubkraft aufgebracht werden. Während des Bohrvorgangs bewirkt das Bohr- und Schlagwerk eine Drehung der Bohrstange zusammen mit einem wiederkehrenden Schlagimpuls in Art eines Bohrhammers. Ein Vorschub der Bohrstange erfolgt durch eine Vorschubbewegung des Bohr- und Schlagwerks in Längsrichtung des Gestells, so dass die Bohrstange immer tiefer in die Wandung des Hochofens eindringen kann. Da eine Bohrstange mehrere Meter lang sein kann, ist es notwendig, die Bohrstange an dem vorderen Endes des Gestells lose zu haltern. Hierzu sind aus dem Stand der Technik verschiedene Einrichtungen bekannt, die so ausgebildet sind, dass die Bohrstange leicht gewechselt werden kann, sowie eine Führung erfährt, die eine Drehung und einen Vorschub der Bohrstange in jedem Fall ungehindert gewährleistet.Tap hole drilling machines are well known from the prior art and essentially serve to open a melt channel by drilling a blast furnace wall of a blast furnace. The known tap hole drilling machines are essentially formed of a frame with a drilling and striking mechanism arranged thereon. The drills and drums have a boring bar adapter for connecting a drill pipe several meters long. The frame is designed in the manner of a carriage and, for example, rotatably and pivotably mounted so that it can be moved in front of a taphole of a blast furnace in a provided for a hole position. To attach a hole, the frame is also regularly with a front end a fastening device firmly fixed to the blast furnace. Thus, a relatively large feed force can be applied during a drilling process via the boring bar. During the drilling process, the drilling and percussion mechanism causes a rotation of the drill rod together with a recurring impact pulse in the manner of a hammer drill. An advance of the drill rod is carried out by a feed movement of the drilling and hammer mechanism in the longitudinal direction of the frame, so that the drill rod can penetrate deeper and deeper into the wall of the blast furnace. Since a boring bar can be several meters long, it is necessary to loosely support the boring bar at the front end of the rack. For this purpose, various devices are known from the prior art, which are designed so that the drill rod can be easily changed, as well as learns a guide that ensures unobstructed rotation and feed the drill rod in any case.

Da das Bohr- und Schlagwerk relativ große Kräfte über die Bohrstangenaufnahme auf die Bohrstange bei einem Bohrvorgang ausübt, kann es während des Bohrvorgangs regelmäßig zu einer plastischen Verformung eines hinteren Endes der Bohrstange in der Bohrstangenaufnahme kommen. Die plastische Verformung kann insbesondere durch das Schlagwerk bewirkt werden, welches über die Bohrstangenaufnahme einen Schlagimpuls auf das hintere Ende der Bohrstange ausübt. Dies kann dazu führen, dass nach dem Eröffnen eines Stichlochs der üblicherweise notwendige Austausch der Bohrstange erschwert ist. Durch die plastische Verformung des hinteren Endes der Bohrstange in der Bohrstangenaufnahme kann sich die Bohrstange so in der Bohrstangenaufnahme verklemmen, dass sie nicht ohne weiteres einfach aus der Bohrstangenaufnahme entfernt werden kann. So ist in diesem Fall ein Wechsel der Bohrstange bzw. deren Entfernung aus der Bohrstangenaufnahme durch Bedienpersonal nur mit zusätzlichem Werkzeug unter einem erhöhten Zeitaufwand möglich.Since the drilling and percussion mechanism exerts relatively large forces over the boring bar receptacle on the boring bar during a drilling operation, a plastic deformation of a rear end of the boring bar in the boring bar receptacle can regularly occur during the boring process. The plastic deformation can be effected in particular by the impact mechanism, which exerts a shock pulse on the rear end of the drill rod via the Bohrstangenaufnahme. This can lead to the usually necessary replacement of the drill rod is difficult after opening a needle hole. The plastic deformation of the rear end of the drill rod in the Bohrstangenaufnahme the drill rod can jam so in the Bohrstangenaufnahme that they can not easily be removed easily from the Bohrstangenaufnahme. Thus, in this case, a change of the drill rod or its removal from the boring bar receptacle by operating personnel only with additional tools under an increased amount of time is possible.

Aus der DE 43 17 436 A1 ist eine Stichlochbohrmaschine bekannt, die nach dem Verfahren der verlorenen Stange arbeitet. Optional kann an der Stichlochbohrmaschine ein Bohr- und Schlagwerk mit einer Bohrstangenaufnahme vorgesehen sein. Zum Einschieben und Herausziehen der Stange in das Abstichloch ist weiter eine Greifeinrichtung an einem am Gestell der Stichlochbohrmaschine bewegbaren Schlitten angeordnet. Die Greifeinrichtung dient zur Führung der Bohrstange beim Einschlagen in das Abstichloch.From the DE 43 17 436 A1 a taphole drill is known that works on the lost rod procedure. Optionally, a drilling and hammer mechanism with a boring bar receptacle can be provided on the taphole drilling machine. For insertion and removal of the rod in the taphole a gripping device is further arranged on a movable carriage on the frame of the taphole drill. The gripping device serves to guide the drill rod when driving into the taphole.

Die WO 2010/094571 A1 zeigt eine Stichlochbohrmaschine die über eine Bohrstangenführung sowie über eine Zentriervorrichtung verfügt. Mit der Bohrstangenführung und der Zentriervorrichtung wird eine Führung der Bohrstange beim Eintreiben und Herausziehen aus einem Stichloch bewirkt.The WO 2010/094571 A1 shows a tap hole drilling machine which has a Bohrstangenführung and a centering device. With the drill rod guide and the centering a guide of the drill rod during driving and pulling out of a tap hole is effected.

Die GB 2260189 A beschreibt ebenfalls eine Stichlochbohrmaschine mit einem Bohr- und Schlagwerk, einer Bohrstange und einer Greifeinrichtung zur Halterung der Bohrstange. Die Greifeinrichtung ist hier ebenfalls zur Führung der Bohrstange ausgebildet und ermöglicht keine Fixierung derselben an einem Gestell der Stichlochbohrmaschine.The GB 2260189 A also describes a tap hole drilling machine with a drilling and striking mechanism, a boring bar and a gripping device for holding the boring bar. The gripping device is also designed here for guiding the drill rod and does not allow it to be fixed to a frame of the taphole drill.

Eine weitere Stichlochbohrmaschine zur Verwendung mit einer verlorenen Stange offenbart die DE 42 07 491 A1 , wobei hier zu einem Vortrieb der Stange bzw. zum Herausziehen aus einem Stichloch ein Bohr- und Schlagwerk, welches auch zur Verwendung mit einer Bohrstange dienen kann sowie eine Greifeinrichtung verwendet wird. Die Greifeinrichtung ist bewegbar in einem Gestell der Stichlochbohrmaschine ausgebildet und weist Klemmelemente auf, mit denen die Stange fest an einem Gestell fixierbar ist. Ein Einschieben bzw. Herausziehen der Stange aus dem Stichloch erfolgt durch ein abwechselndes Klemmen bzw. Bewegen der Stange mit dem Bohr- und Schlagwerk und der Greifeinrichtung.Another taphole drilling machine for use with a lost rod discloses the DE 42 07 491 A1 , Here, for a propulsion of the rod or for pulling out of a tap hole a drilling and striking mechanism, which can also serve for use with a boring bar and a gripping device is used. The gripping device is movably formed in a frame of the taphole drilling machine and has clamping elements with which the rod is fixed to a frame. An insertion or extraction of the rod from the needle hole is done by alternately clamping or moving the rod with the drilling and striking mechanism and the gripping device.

Die EP 0 064 644 A1 betrifft eine ebensolche Stichlochbohrmaschine mit einer verlorenen Stange und einem Bohr- und Schlagwerk, wobei hier eine Greifeinrichtung nur zur Führung der Stange beim Herausziehen derselben aus einem Stichloch dient.The EP 0 064 644 A1 concerns a similar tap hole drilling machine with a lost rod and a drilling and striking mechanism, here a gripping device only serves to guide the rod when pulling it out of a needle hole.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Haltevorrichtung für eine Bohrstange einer Stichlochbohrmaschine sowie ein Verfahren zum Entfernen einer Bohrstange aus einer Bohrstangenaufnahme einer Stichlochbohrmaschine vorzuschlagen, welche bzw. welches zum Entfernen einer Bohrstange aus einer Bohrstangenaufnahme keine manuelle Handhabung erfordert, wobei die Haltevorrichtung dennoch besonders einfach ausgebildet sein soll.The present invention is therefore based on the object of proposing a holding device for a boring bar of a taphole drilling machine and a method for removing a boring bar from a boring bar receptacle of a taphole drilling machine which does not require manual handling for removing a boring bar from a boring bar receptacle, wherein the holding device nevertheless should be particularly simple.

Diese Aufgabe wird durch eine Haltevorrichtung mit den Merkmalen des Anspruchs 1 und ein Verfahren mit den Merkmalen des Anspruchs 13 gelöst.This object is achieved by a holding device having the features of claim 1 and a method having the features of claim 13.

Die Erfindung betrifft eine Haltevorrichtung für eine Bohrstange einer Stichlochbohrmaschine, wobei die Stichlochbohrmaschine ein Gestell mit einem daran bewegbar angeordneten Bohr- und Schlagwerk aufweist, wobei das Bohr- und Schlagwerk eine Bohrstangenaufnahme zum Anschluss der Bohrstange aufweist, wobei eine Greifeinrichtung der Haltevorrichtung an dem Gestell angeordnet ist, wobei die Greifeinrichtung zur Halterung der Bohrstange relativ zur Bohrstangenaufnahme dient, und wobei mittels der Greifeinrichtung die Bohrstange an dem Gestell fest fixierbar ist, wobei die Haltevorrichtung eine Antriebseinrichtung aufweist die ein Schwenken der Greifeinrichtung bewirken kann, wobei die Greifeinrichtung Klauen aufweist, wobei die Klauen in einer Öffnungsstellung so weit voneinander beabstandet sein können, derart, dass die Bohrstange freigegeben ist, wobei die Klauen in einer Schließstellung die Bohrstange umgreifen können, derart, dass die Bohrstange von den Klauen geführt ist, und wobei die Klauen in einer Klemmstellung die Bohrstange umgreifen können, derart, dass die Bohrstange zwischen den Klauen kraft- und/oder formschlüssig fixiert ist.The invention relates to a holding device for a boring bar of a taphole drilling machine, wherein the taphole drilling machine has a frame with a movably arranged drilling and striking mechanism, wherein the drilling and striking mechanism has a boring bar receptacle for connecting the boring bar, wherein a gripping device of the holding device is arranged on the frame is, wherein the gripping device for supporting the boring bar relative to the Bohrstangenaufnahme, and wherein by means of the gripping device, the boring bar is fixed to the frame, wherein the holding device comprises a drive means which can cause pivoting of the gripping device, wherein the gripping device comprises claws, wherein the Claws may be so far apart in an open position, such that the drill rod is released, wherein the claws can engage around the drill rod in a closed position, such that the boring bar is guided by the claws, and w obei the jaws can embrace the drill rod in a clamping position, such that the drill rod between the claws force and / or positively fixed.

Demnach ist es mittels der Greifeinrichtung möglich, die Bohrstange relativ zum Gestell an diesem drehfest zu fixieren bzw. so zu fixieren, dass eine Vorschubbewegung der Bohrstange nicht mehr möglich ist. Folglich wird es möglich, dass am Gestell bewegbare Bohr- und Schlagwerk in eine zur Vorschubbewegung entgegengesetzte Richtung zu bewegen bzw. maschinell angetrieben so zu verfahren, dass die Bohrstange aus der Bohrstangenaufnahme herausgezogen wird. Für den Fall, dass sich die Bohrstange in der Bohrstangenaufnahme verklemmt haben sollte, wird somit kein zusätzliches Werkzeug oder Personal benötigt, da ein Werkzeug zum Festhalten bzw. Klemmen der Bohrstange durch die Greifeinrichtung zur Verfügung gestellt, bzw. ausgebildet wird. Gegenüber einer manuellen Entfernung der Bohrstange aus der Bohrstangenaufnahme können mittels des bewegbaren Bohr- und Schlagwerks auch besonders hohe Zugkräfte zur Verfügung gestellt bzw. ausgebildet werden, die ein Herausziehen selbst stark verformter Bohrstangenenden aus der Bohrstangenaufnahme vereinfachen, ohne dass ein Zeitaufwand für einen Bohrstangewechsel wesentlich erhöht wird.Accordingly, it is possible by means of the gripping device to fix the boring bar relative to the frame at this rotationally fixed or fix so that a feed movement of the boring bar is no longer possible. As a result, it becomes possible to move the drill and percussion mechanism movable in the frame in a direction opposite to the advancing movement or to drive it in such a way that the boring bar is pulled out of the boring bar receptacle. In the event that the drill rod should have jammed in the Bohrstangenaufnahme, thus no additional tool or personnel is required because a tool for holding or clamping the boring bar provided by the gripping device, or is formed. Compared to a manual removal of the drill rod from the Bohrstangenaufnahme particularly high tensile forces can be provided or formed by means of the movable drill and percussion, which simplify extraction even heavily deformed Bohrstangenenden from the Bohrstangenaufnahme without a time required for a drill rod change significantly becomes.

Hinsichtlich der Fixierung der Bohrstange relativ zum Gestell, ist es grundsätzlich unerheblich, an welcher Stelle des Gestells die Bohrstange fixiert wird. So ist es beispielsweise auch denkbar, die Bohrstange in unmittelbarer Nähe zur Bohrstangenaufnahme am Gestell zu fixieren.With regard to the fixation of the drill rod relative to the frame, it is basically irrelevant at which point of the frame, the drill rod is fixed. For example, it is also conceivable to fix the boring bar in the immediate vicinity of the boring bar receptacle on the frame.

Besonders vorteilhaft ist es, wenn die Greifeinrichtung an einem, einem Stichloch zugewandten und dem Bohr- und Schlagwerk gegenüberliegenden Ende des Gestells angeordnet ist. Die Greifeinrichtung kann dann so ausgebildet sein, dass sie auch zu einer Führung der Bohrstange dient. So kann ein ggf. unrunder bzw. exzentrischer Lauf der Bohrstange beim Anbohren einer Hochofenwandung vermieden werden.It is particularly advantageous if the gripping device is arranged on an end of the frame which faces a stitch hole and is opposite the drilling and impact mechanism. The gripping device can then be designed so that it also serves to guide the drill rod. Thus, a possibly eccentric or eccentric running of the boring bar when drilling a blast furnace wall can be avoided.

Die Greifeinrichtung kann beispielsweise Klemmelemente aufweisen, die die Bohrstange kraft- und/oder formschlüssig fixieren können. So können die Klemmelemente so ausgebildet sein, dass sie die Bohrstange mittels Reibschluss klemmen. Eine zur Anlage an der Bohrstange vorgesehene Oberfläche der Klemmelemente kann dazu beispielsweise mit einer Zahnung versehen sein. Die Klemmelemente können aber auch spitzen- oder keilförmige Vorsprünge aufweisen, die in eine Oberfläche der Bohrstange formschlüssig eindringen können.The gripping device may, for example, comprise clamping elements which can positively and / or positively fix the boring bar. Thus, the clamping elements can be designed so that they clamp the drill rod by means of frictional engagement. An intended for installation on the drill rod Surface of the clamping elements can be provided, for example, with a toothing. The clamping elements may also have pointed or wedge-shaped projections which can penetrate positively into a surface of the drill rod.

Erfindungsgemäß weist die Greifeinrichtung Klauen auf, die die Bohrstange umgreifen können, derart, dass die Bohrstange von den Klauen geführt wird. Die Klauen können so als eine Führung für die Bohrstange dienen, ohne dass eine Fixierung der Bohrstange mittels der Klauen erfolgt. Auch können die Klauen so beschaffen sein, dass sie neben einer Umschließung der Bohrstange so verschwenkbar sind, dass die Bohrstange von den Klausen freigegeben wird und leicht auswechselbar ist.According to the invention, the gripping device on claws, which can embrace the boring bar, such that the boring bar is guided by the claws. The claws can serve as a guide for the boring bar, without any fixation of the boring bar by means of the claws. Also, the claws may be such that they are pivotable in addition to an enclosure of the drill rod so that the drill rod is released by the Klausen and is easily replaceable.

Insofern ist es vorteilhaft, wenn die Klemmelemente jeweils an den Klauen angeordnet und fest mit diesem verbunden sind. Je nach Position der Klauen relativ zur Bohrstange können die Klemmelemente fest an dieser anliegen und somit die Bohrstange fixieren, bzw. von der Bohrstange beabstandet sein, so dass die Bohrstange zwischen den Klauen geführt wird. Die Funktion der Klemmelemente kann so einfach über einen Abstand der Klauen relativ zur Bohrstange eingestellt werden.In this respect, it is advantageous if the clamping elements are respectively arranged on the jaws and firmly connected thereto. Depending on the position of the jaws relative to the drill rod, the clamping elements can firmly abut against this and thus fix the boring bar, or be spaced from the boring bar, so that the boring bar is guided between the claws. The function of the clamping elements can be adjusted so easily over a distance of the jaws relative to the drill rod.

Weiter weist die Haltevorrichtung erfindungsgemäß eine Antriebseinrichtung auf, die ein Schwenken der Greifeinrichtung in eine Öffnungs-, Schließ-, oder Klemmstellung bewirken kann. In einer Öffnungsstellung können beispielsweise Klauen soweit voneinander beabstandet sein, dass keine Führung der Bohrstange zwischen den Klauen erfolgt und die Bohrstange einfach entnommen werden kann. In einer Schließstellung können die Klauen die Bohrstange soweit umgeben, dass die Bohrstange zwischen den Klauen geführt wird, und in einer Klemmstellung können die Klauen soweit der Bohrstange angenähert sein, dass die Bohrstange zwischen den Klauen bzw. zwischen an den Klauen befestigten Klemmelementen kraft- und/oder formschlüssig fixiert ist. Die Antriebseinrichtung kann eine einfache, maschinelle und ggf. automatisierte Überführung der Greifeinrichtung in diese Stellungen ermöglichen.Next, the holding device according to the invention a drive device which can cause a pivoting of the gripping device in an open, close, or clamping position. In an open position, for example, claws can be spaced apart from one another such that no guidance of the drill rod between the claws takes place and the boring bar can be easily removed. In a closed position, the jaws surround the drill rod so far that the drill rod is guided between the jaws, and in a clamping position, the jaws can be approximated as far as the drill rod that the drill rod between the jaws or between attached to the jaws clamping elements and / or positively fixed. The drive device can enable a simple, automated and possibly automated transfer of the gripping device into these positions.

Die Antriebseinheit kann aus einem Hebelgetriebe, einer Antriebswelle und einem Betätigungszylinder gebildet sein, wobei der Betätigungszylinder derart mit der Antriebswelle gekoppelt ist, dass die Antriebswelle mittels des Bestätigungszylinders drehbar ist, und wobei die Antriebswelle derart mit dem Hebelgetriebe gekoppelt ist, das das Hebelgetriebe mittels der Antriebwelle das Verschwenken der Greifeinrichtung bewirken kann. Der Betätigungszylinder kann ein Hydraulikzylinder sein, der die Antriebswelle in einem bestimmten Drehwinkel dreht bzw. verschwenkt. Diese Drehung der Antriebswelle kann weiter auf das Hebelgetriebe übertragen werden, so dass das Hebelgetriebe eine Betätigung der Greifeinrichtung bewirkt. So können die Öffnungs-, Schließ-, oder Klemmstellung durch verschiedene Drehwinkelpositionen der Antriebswelle eingestellt werden. Auch ermöglicht die Verwendung einer Antriebswelle eine räumliche Trennung von Greifeinrichtung und Betätigungszylinder, da der Betätigungszylinder vor Temperatureinwirkung geschützt und möglichst weit von der Hochofenwandung entfernt werden sollte.The drive unit may be formed of a lever gear, a drive shaft and an actuating cylinder, wherein the actuating cylinder is coupled to the drive shaft such that the drive shaft is rotatable by means of the confirmation cylinder, and wherein the drive shaft is so coupled to the lever gear, the lever mechanism by means of Drive shaft can cause the pivoting of the gripping device. The actuating cylinder may be a hydraulic cylinder which rotates or pivots the drive shaft at a certain angle of rotation. This rotation of the drive shaft can be further transmitted to the lever gear, so that the lever mechanism causes an actuation of the gripping device. Thus, the opening, closing, or clamping position can be adjusted by different rotational angle positions of the drive shaft. Also, the use of a drive shaft allows a spatial separation of gripping device and actuating cylinder, since the actuating cylinder should be protected from the influence of temperature and removed as far as possible from the blast furnace wall.

Zur Anpassung der Greifeinrichtung an verschiedene Bohrstangendurchmesser oder auch zum Wechsel zwischen der Schließ-, oder Klemmstellung der Greifeinrichtung kann die Haltevorrichtung eine Einstelleinrichtung aufweisen, mittels der die Schließ- oder Klemmstellung einstellbar ist.In order to adapt the gripping device to different drill rod diameters or also to change between the closing or clamping position of the gripping device, the holding device can have an adjusting device by means of which the closing or clamping position can be adjusted.

So kann zwischen der Antriebseinheit und der Einstelleinrichtung ein Anschlag zur Begrenzung einer Drehung der Antriebswelle ausgebildet sein. Die Antriebswelle ist dann mittels des Betätigungszylinders nur bis zu einem bestimmten Drehwinkel drehbar, bis die Schließ- oder die Klemmstellung der Greifeinrichtung erreicht wird. Der Anschlag kann beispielsweise auch eine Schraube umfassen, die eine Feinjustierung des Anschlags ermöglicht.Thus, a stop for limiting a rotation of the drive shaft can be formed between the drive unit and the adjusting device. The drive shaft is then rotatable by means of the actuating cylinder only up to a certain angle of rotation until the closing or the clamping position of the gripping device is reached. The stop may for example also include a screw that allows fine adjustment of the stop.

Eine Drehung der Antriebswelle wird einfach möglich, wenn der Betätigungszylinder über einen Kurbelhebel mit der Antriebswelle verbunden ist. Der Kurbelhebel kann beispielsweise an einem Ende der Antriebswelle starr befestigt sein, wobei der Betätigungszylinder an einem Ende des Kurbelhebels angreifen und diesen um die Antriebswelle verschwenken kann.A rotation of the drive shaft is easily possible when the actuating cylinder connected via a crank lever to the drive shaft is. The crank lever may, for example, be rigidly secured to one end of the drive shaft, wherein the actuating cylinder can engage one end of the crank lever and pivot it about the drive shaft.

In diesem Fall kann der Anschlag besonders einfach zwischen dem Kurbelhebel und der Einstelleinrichtung ausgebildet sein. Der Anschlag kann dann eine Schwenkbewegung des Kurbelhebels und somit einen Drehwinkel der Antriebswelle einfach begrenzen.In this case, the stop can be particularly easily formed between the crank lever and the adjusting device. The stop can then easily limit a pivoting movement of the crank lever and thus a rotational angle of the drive shaft.

Um den Anschlag möglichst einfach variieren bzw. einstellen zu können, kann die Einstelleinrichtung ein Anschlagelement zur Ausbildung des Anschlags aufweisen, wobei das Anschlagelement einen Schließanschlag zur Ausbildung der Schließstellung und einen Klemmanschlag zur Ausbildung der Klemmstellung aufweisen kann, wobei das Anschlagelement zwischen einer Schließ- oder Klemmposition bewegbar ist, derart, dass der Schließanschlag oder wahlweise der Klemmanschlag den Anschlag ausbildet. Das Anschlagelement kann demnach zwei Anschläge ausbilden, wobei je nach gewünschter Stellung der Greifeinrichtung der jeweils passende Anschlag des Anschlagelements Verwendung findet. Das Anschlagelement kann beispielsweise als ein Stab ausgebildet sein, der den Schließanschlag und den Klemmanschlag ausbildet und entlang seiner Längsachse so verschoben werden kann, dass der Schließanschlag oder der Klemmanschlag als Anschlag verwendet wird. Der so ausgebildete Anschlag kann dann einen Drehwinkel der Antriebswelle begrenzen, bzw. einstellen und ermöglicht eine Auswahl zwischen der Schließ- oder Klemmposition der Greifeinrichtung durch ein einfaches Verschieben des Anschlagelements. Auch kann der Schließ- oder Klemmanschlag dadurch ausgebildet sein, dass auf eine physische Ausbildung einer dieser Anschläge an der Einstelleinrichtung verzichtet wird. Der betreffende Anschlag kann dann durch den maximalen Hub des Betätigungszylinders ausgebildet sein.To vary the stop as simple as possible or adjust, the adjustment can have a stop element for forming the stop, wherein the stop element may have a closing stop for forming the closed position and a clamping stop to form the clamping position, wherein the stop element between a closing or Clamping position is movable, such that the closing stop or optionally the clamping stop forms the stop. The stop element can therefore form two stops, which, depending on the desired position of the gripping device, the respectively suitable stop of the stop element is used. The stop element can be formed, for example, as a rod which forms the closing stop and the clamping stop and can be moved along its longitudinal axis so that the closing stop or the clamping stop is used as a stop. The thus formed stop can then limit a rotational angle of the drive shaft, or set and allows a selection between the closing or clamping position of the gripping device by a simple displacement of the stop element. Also, the closing or clamping stop can be formed by dispensing with a physical formation of one of these stops on the setting device. The relevant stop can then be formed by the maximum stroke of the actuating cylinder.

In einer weiteren Ausführungsform kann die Einstelleinrichtung eine Feder aufweisen, mittels der das Anschlagelement in die Schließposition bewegbar ist. Damit kann sichergestellt werden, dass, wenn keine bestimmte Position mittels der Einstelleinrichtung ausgewählt wurde, immer der Schließanschlag den Anschlag ausbildet und sich die Greifeinrichtung in der Schließposition befindet. Die Feder kann als eine Zug- oder Druckfeder ausgebildet sein, die eine Verschiebung bzw. diesbezügliche Bewegung der Einstelleinrichtung bewirkt.In a further embodiment, the adjusting device may comprise a spring, by means of which the stop element is movable into the closed position. This can be ensured that, if no specific position was selected by means of the adjustment, always the closing stop forms the stop and the gripping device is in the closed position. The spring may be formed as a tension or compression spring, which causes a displacement or related movement of the adjusting.

So ist es vorteilhaft, wenn die Einstelleinrichtung eine Arretiereinheit aufweist, mittels der das Anschlagelement in der Schließ- oder Klemmposition arretierbar ist. Mittels der Arretiereinheit kann sichergestellt werden, dass das Anschlagelement sicher in seiner vorgesehen Lage verbleibt. Die Arretiereinheit kann beispielsweise aus einem Hebelelement gebildet sein, das in einer jeweiligen, gewünschten Position des Anschlagselements so verrastet oder verschwenkt wird, dass die Arretiereinheit das Anschlagelement formschlüssig fixiert und eine unerwünschte Verschiebung desselben verhindert.Thus, it is advantageous if the adjusting device has a locking unit, by means of which the stop element can be locked in the closed or clamping position. By means of the locking unit it can be ensured that the stop element remains securely in its intended position. The locking unit may for example be formed from a lever element which is locked or pivoted in a respective desired position of the stop member so that the locking unit fixes the stopper member positively and prevents the same unwanted displacement.

Bei dem erfindungsgemäßen Verfahren zum Entfernen einer Bohrstange aus einer Bohrstangenaufnahme einer Stichlochbohrmaschine weist die Stichlochbohrmaschine ein Gestell mit einem daran angeordneten Bohr- und Schlagwerk auf, wobei das Bohr- und Schlagwerk die Bohrstangenaufnahme zum Anschluss der Bohrstange aufweist, wobei eine Greifeinrichtung an dem Gestell angeordnet ist, wobei die Greifeinrichtung die Bohrstange relativ zur Bohrstangenaufnahme haltert, wobei die Greifeinrichtung Klauen (30) aufweist, wobei die Klauen in einer Schließstellung die Bohrstange umgreifen, derart, dass die Bohrstange von den Klauen geführt wird, wobei die Klauen in einer Klemmstellung die Bohrstange umgreifen, derart, dass die Bohrstange zwischen den Klauen geklemmt wird, wobei mittels der Greifeinrichtung die Bohrstange an dem Gestell fest fixiert wird, und wobei die Bohrstangenaufnahme relativ zur Greifeinrichtung in eine zur Vorschubrichtung entgegengesetzte Richtung derart bewegt wird, dass die Bohrstange aus der Bohrstangenaufnahme entfernt wird, und wobei die Klauen in einer Öffnungsstellung so weit voneinander beabstandet werden, dass die Bohrstange freigegeben wird.In the method according to the invention for removing a boring bar from a boring bar receptacle of a tap hole drilling machine, the tap hole boring machine has a frame with a drilling and impact mechanism arranged thereon, wherein the boring and striking mechanism has the boring bar receptacle for connecting the boring bar, wherein a gripping device is arranged on the frame wherein the gripping device supports the drill rod relative to the drill rod receiver, the gripper comprising claws (30), the claws engaging around the drill rod in a closed position, such that the drill rod is guided by the claws, the claws engaging around the drill rod in a clamping position in such a way that the drill rod is clamped between the jaws, wherein the drill rod is firmly fixed to the frame by means of the gripping device, and wherein the drill rod receiver is in a direction opposite to the feed direction relative to the gripper device Direction is moved so that the drill rod is removed from the Bohrstangenaufnahme, and wherein the claws are spaced in an open position so far apart that the boring bar is released.

Bezüglich der Vorteile des erfindungsgemäßen Verfahrens wird auf die vorstehende Beschreibung der erfindungsgemäßen Vorrichtung verwiesen. Andere vorteilhafte Ausführungsformen des Verfahrens ergeben sich aus den Merkmalsbeschreibungen der auf den Vorrichtungsanspruch 1 rückbezogenen Unteransprüche.With regard to the advantages of the method according to the invention, reference is made to the above description of the device according to the invention. Other advantageous embodiments of the method will become apparent from the feature descriptions of the dependent claims back to the device claim 1.

Im Folgenden wird die Erfindung unter Bezugnahme auf die beigefügte Zeichnung näher erläutert.In the following the invention will be explained in more detail with reference to the accompanying drawings.

Es zeigen:

Fig. 1
eine Seitenansicht einer Stichlochbohrmaschine mit einer Haltevorrichtung;
Fign. 2a-2c
eine Vorderansicht einer Greifeinrichtung in verschiedenen Positionen;
Fign. 3a-3c
ein jeweils vergrößerter Ausschnitt der Greifeinrichtung aus den Fig. 2a bis 2c ;
Fig. 4
eine Schnittansicht der Stichlochbohrmaschine mit einer Einstelleinrichtung;
Fig. 5
eine Teilansicht der Stichlochbohrmaschine aus Fig. 1 mit der Einstelleinrichtung;
Fig. 6
eine Längsschnittansicht der Einstelleinrichtung aus Fig. 5 ;
Fig. 7
eine weitere Längsschnittansicht der Einstelleinrichtung aus Fig. 5 ;
Fig. 8
eine vergrößerte Seitenansicht der Einstelleinrichtung aus Fig. 5 ;
Fig. 9
eine Seitenansicht einer weiteren Ausführungsform einer Einstelleinrichtung.
Show it:
Fig. 1
a side view of a tap hole drilling machine with a holding device;
FIGS. 2a-2c
a front view of a gripping device in different positions;
FIGS. 3a-3c
an enlarged detail of the gripping device from the Fig. 2a to 2c ;
Fig. 4
a sectional view of the taphole drill with an adjustment;
Fig. 5
a partial view of the tap hole drilling machine Fig. 1 with the adjustment device;
Fig. 6
a longitudinal sectional view of the adjustment of Fig. 5 ;
Fig. 7
a further longitudinal sectional view of the adjustment of Fig. 5 ;
Fig. 8
an enlarged side view of the adjustment from Fig. 5 ;
Fig. 9
a side view of another embodiment of an adjustment.

Fig. 1 zeigt eine Seitenansicht einer Stichlochbohrmaschine 10 an einer abschnittweise dargestellten Hochofenwandung 11. Die Stichlochbohrmaschine 10 weist einen Standfuß 12 sowie eine Positioniervorrichtung 13 zur Bewegung und Positionierung eines daran angeordneten Gestells 14 mit einer Bohrstange 15 und einem Bohr- und Schlagwerk 16 auf. Die Bohrstange 15 ist in eine Bohrstangenaufnahme 17 des Bohr- und Schlagwerks 16 eingesetzt und kann durch eine Längsbewegung des Bohr- und Schlagwerks entlang des Gestells 14 in Richtung der Hochofenwandung 11 vor- oder zurückgeschoben werden. Weiter ist an einem vorderen Ende 18 des Gestells 14 eine Befestigungseinrichtung 19 angeordnet, die das Gestell 14 fest an einem Halter 20 an der Hochofenwandung 11 fixiert. So kann insbesondere eine präzise Stichlochbohrung durchgeführt werden. An dem vorderen Ende 18 ist darüber hinaus eine Greifeinrichtung 21 mit einem Hebelgetriebe 22 angeordnet, wobei das Hebelgetriebe 22 über eine Antriebswelle 23 mit einem hier nicht sichtbaren Betätigungszylinder unter einer Schutzabdeckung 24 verbunden ist. Weiter ist eine Einstelleinrichtung 25 an einem hinteren Ende 26 der Antriebswelle 23 angeordnet. Die Einstelleinrichtung 25 bildet zusammen mit der Greifeinrichtung 21 sowie dem Hebelgetriebe 22, der Antriebswelle 23 und dem Betätigungszylinder eine Haltevorrichtung 27 für die Bohrstange 15 aus. Für den Fall, dass sich die Bohrstange 15 nicht ohne weiteres aus der Bohrstangenaufnahme 17 entfernen lässt, insbesondere wenn sie durch eine plastische Verformung in der Bohrstangenaufnahme 17 verklemmt ist, wird die Bohrstange 15 mittels der Greifeinrichtung 21 an einem vorderen Ende 28 der Bohrstange 15 geklemmt und so relativ zum Gestell 14 fest fixiert. Das Bohr- und Schlagwerk 16 wird nun in Richtung eines hinteren Endes 29 des Gestells 14 verfahren bzw. zurückgeschoben, so dass die Bohrstange 15 aus der Bohrstangenaufnahme 17 durch diese Relativbewegung herausgezogen wird. So kann eine ohnehin notwendige maschinelle Bewegung des Bohr- und Schlagwerks 16 in Richtung des hinteren Endes 29 des Gestells 14 zum Herausziehen der Bohrstange 15 aus einem hier nicht dargestellten Bohrloch in der Hochofenwandung 11 benutzt werden, um die Bohrstange 15 aus der Bohrstangenaufnahme 17 zu lösen. Auch ist dafür dann weder zusätzliches Werkzeug noch eine Unterbrechung des sonst üblichen Arbeitsablaufs notwendig. Fig. 1 The tap hole drilling machine 10 has a base 12 and a positioning device 13 for moving and positioning a frame 14 arranged thereon with a boring bar 15 and a boring and percussion mechanism 16. The boring bar 15 is inserted into a boring bar receptacle 17 of the boring and striking mechanism 16 and can be pushed forwards or backwards by a longitudinal movement of the boring and striking mechanism along the frame 14 in the direction of the blast furnace wall 11. Further, a fastening device 19 is arranged at a front end 18 of the frame 14, which fixes the frame 14 fixed to a holder 20 on the blast furnace wall 11. In particular, a precise tap hole can be performed. At the front end 18, a gripping device 21 is also arranged with a lever mechanism 22, wherein the lever mechanism 22 is connected via a drive shaft 23 with a not visible here actuating cylinder under a protective cover 24. Further, an adjusting device 25 is arranged at a rear end 26 of the drive shaft 23. The adjusting device 25 forms, together with the gripping device 21 and the lever mechanism 22, the drive shaft 23 and the actuating cylinder, a holding device 27 for the boring bar 15. In the event that the boring bar 15 can not readily be removed from the boring bar receptacle 17, especially if it is jammed by plastic deformation in the boring bar receptacle 17, the boring bar 15 is clamped by means of the gripping device 21 to a front end 28 of the boring bar 15 and so firmly fixed relative to the frame 14. The drilling and striking mechanism 16 is now moved in the direction of a rear end 29 of the frame 14 or pushed back so that the boring bar 15 is pulled out of the boring bar receptacle 17 by this relative movement. Thus, an already necessary mechanical movement of the drilling and percussion mechanism 16 in the direction of the rear end 29 of the frame 14 for pulling out the boring bar 15 from a borehole, not shown here in the blast furnace wall 11 are used to release the boring bar 15 from the boring bar receptacle 17 , Also, it is then necessary neither additional tool nor an interruption of the usual workflow.

Die Fig. 2a bis 2c bzw. Fig. 3a bis 3c zeigen mehrere Ansichten der Greifeinrichtung 21, welche im Wesentlichen aus Klauen 30 und Klemmelementen 31 gebildet ist. Die Klauen 30 sind relativ zu einer Symmetrieachse 32 der Greifeinrichtung 21 um Achsen 33 verschwenkbar angeordnet. Das in dieser Ansicht nicht dargestellte Hebelgetriebe 23 ist über Gelenke 34 mit den Klauen 30 verbunden. Die Bohrstange 15 ist in den hier jeweils gezeigten Stellungen der Greifeinrichtung 21 zwischen den Klauen 30 so aufgenommen, das sie nicht herausfallen kann. Zum vollständigen Wechsel der Bohrstange 15 können die Klauen 30 jeweils um die Achsen 33 so verschwenkt werden, dass die Bohrstange 15 freigegeben wird. Die Fig. 2a bzw. 3a zeigen eine Klemmstellung der Greifeinrichtung 21, die Fig. 2b bzw. 3b eine Mittelstellung und die Fig. 2c bzw. 3c eine Schließstellung der Greifeinrichtung 21. Ein Klauenabstand a ist dementsprechend jeweils vermindert oder vergrößert. Wie aus der Fig. 3a zu ersehen ist, dringen keilförmige Klemmbacken 35 des Klemmelements 31 in eine Oberfläche 36 der Bohrstange 15 ein, so dass eine kraft- und formschlüssige Fixierung der Bohrstange 15 mittels der Greifeinrichtung 21 erzielt wird. Gemäß der Darstellung der Fig. 3c können die Klauen 30 geringfügig auseinander bewegt werden, so dass der Klauenabstand a vergrößert ist und ein Spalt 37 zwischen den Klemmbacken 35 und der Bohrstange 15 gebildet wird. Die Bohrstange 15 kann dann in der Greifeinrichtung 21 für einen Bohrvorgang rotieren und in axialer Richtung vorgeschoben werden. Die Greifeinrichtung 21 erfüllt in dieser Stellung eine Führungsfunktion. Sollten die beiden Klemmelemente 31 verschlissen sein, können sie leicht mittels Schrauben 38 von den Klauen 30 demontiert und ausgewechselt werden.The Fig. 2a to 2c respectively. Fig. 3a to 3c show several views of the gripping device 21, which is essentially formed from claws 30 and clamping elements 31. The claws 30 are arranged relative to an axis of symmetry 32 of the gripping device 21 about axes 33 pivotally. The lever mechanism 23, not shown in this view, is connected via joints 34 with the claws 30. The drill rod 15 is received in the positions shown here in each case of the gripping device 21 between the jaws 30 so that they can not fall out. For complete replacement of the drill rod 15, the claws 30 can each be pivoted about the axes 33 so that the drill rod 15 is released. The Fig. 2a or 3a show a clamping position of the gripping device 21, the Fig. 2b or 3b a middle position and the Fig. 2c or 3c, a closed position of the gripping device 21. A claw distance a is accordingly reduced or increased respectively. Like from the Fig. 3a can be seen, wedge-shaped clamping jaws 35 of the clamping element 31 penetrate into a surface 36 of the drill rod 15, so that a positive and positive fixation of the drill rod 15 by means of the gripping device 21 is achieved. According to the presentation of the Fig. 3c For example, the claws 30 may be moved slightly apart so that the jaw spacing a is increased and a gap 37 is formed between the jaws 35 and the boring bar 15. The drill rod 15 can then rotate in the gripping device 21 for a drilling operation and be advanced in the axial direction. The gripping device 21 fulfills in this Position a leadership function. If the two clamping elements 31 are worn, they can be easily disassembled and replaced by means of screws 38 from the claws 30.

Eine Zusammenschau der Fig. 4 bis 8 zeigt eine nähere Darstellung der Einstelleinrichtung 25. Der unter der Schutzabdeckung 24 befindliche Betätigungszylinder 39 ist über einer Gelenk 40 mit einem Kurbelhebel 41 verbunden, welcher wiederum fest mit der Antriebswelle 23 verbunden ist. Eine Bewegung des Betätigungszylinders 39 ermöglicht somit eine Drehung der Antriebswelle 23 um einen Drehwinkel α, wie aus Fig. 4 ersichtlich. An dem Kurbelhebel 41 ist weiter eine Einstellschraube 42 angebracht, hier zusammen mit einem Anschlagelement 43 der Einstelleinrichtung 25 einen Anschlag bzw. Schließanschlag 47 ausbildet. Das Anschlagelement 43 ist als ein Stab 45 mit einem quadratischen Querschnitt ausgebildet und in einem übereinstimmend ausgebildeten Führungsprofil 46 längsbeweglich gelagert. An dem Stab 45 gegenüberliegend der Einstellschraube 42 ist der Schließanschlag 47 zur Anlage der Einstellschraube 42 bzw. ein hier nicht sichtbarer Klemmanschlag ausgebildet. Weiter ist es eine Feder 49 an einem vorderen Ende 50 des Stabs 45 so befestigt, dass der Stab 45 in die in den Fig. 6 und 7 gezeigte Schließposition des Anschlagelements 43 gezogen wird. An einem hinteren Ende 51 des Stabs 45 ist weiter ein Hebel 52 über eine Achse 53 am Stab 45 angeordnet, bzw. mit dieser drehbar verbunden. So ist die Achse 53 in eine zentrische Bohrung 54 im Stab 45 eingesetzt und mittels einer Ösenschraube 55 gesichert. Die Ösenschraube 55 dient hier ebenfalls zur Befestigung der Feder 49. Durch eine Bewegung des Hebels in die hier in den Fig. 6 und 7 mit gestrichelten Linien dargestellte Klemmposition des Anschlagselements 43 wird der Stab 45 entgegen einer Federkraft der Feder 49 in Richtung des hinteren Endes 51 so im Führungsprofil 46 verschoben, dass der Klemmanschlag ausgebildet wird. Die Einstelleinrichtung 45 verfügt weiter über eine Bedientafel 56, der eine Bedienperson die jeweilige Stellung des Hebels 52 bzw. die Schließ- oder Klemmstellung der Greifeinrichtung 21 entnehmen kann.A synopsis of Fig. 4 to 8 shows a closer view of the adjustment 25. The under the protective cover 24 located actuating cylinder 39 is connected via a hinge 40 with a crank lever 41, which in turn is fixedly connected to the drive shaft 23. A movement of the actuating cylinder 39 thus enables a rotation of the drive shaft 23 by a rotation angle α, as from Fig. 4 seen. On the crank lever 41, an adjusting screw 42 is further attached, here together with a stop element 43 of the adjusting device 25, a stop or closing stop 47 is formed. The stop element 43 is formed as a rod 45 with a square cross-section and mounted longitudinally movably in a matching trained guide profile 46. On the rod 45 opposite the adjusting screw 42, the closing stop 47 is designed to bear the adjusting screw 42 or a clamping stop not visible here. Further, a spring 49 is fixed to a front end 50 of the rod 45 so that the rod 45 in the in the 6 and 7 shown closed position of the stop element 43 is pulled. At a rear end 51 of the rod 45, a lever 52 is further arranged on an axis 53 on the rod 45, and rotatably connected thereto. Thus, the axis 53 is inserted into a central bore 54 in the rod 45 and secured by means of an eyelet screw 55. The eyelet screw 55 also serves to fasten the spring 49. By a movement of the lever in the here in the 6 and 7 shown with dashed lines clamping position of the stop member 43, the rod 45 is displaced against a spring force of the spring 49 in the direction of the rear end 51 so in the guide section 46 that the clamp stop is formed. The adjustment device 45 further has an operator panel 56, which can take an operator from the respective position of the lever 52 or the closed or clamping position of the gripping device 21.

Der Hebel 52 kann weiter so um eine Längsache 57 des Stabs 45 verschwenkt werden, dass der Hebel 52 in der jeweiligen Position bzw. Stellung den Stab 45 arretieren kann.The lever 52 can continue to be pivoted about a Längsache 57 of the rod 45, that the lever 52 can lock the rod 45 in the respective position or position.

Die Fig. 9 zeigt eine weitere Ausführungsform einer Einstelleinrichtung 58, die im Unterschied zu der vorstehend beschriebenen Einstellvorrichtung einen Hebel 59 mit einer Bedientafel 60 aufweist. In der Bedientafel 60 sind zwei Nuten 61 ausgebildet, und der Hebel 59 kann jeweils durch Verschwenken um die Längsachse 57 in die Nuten 61 eingesetzt werden, so dass eine jeweilige Position des Stabs 45 mittels des Hebels 59 und der Bedientafel 60 formschlüssig fixiert werden kann.The Fig. 9 shows a further embodiment of an adjustment 58, which has a lever 59 with a control panel 60, in contrast to the adjustment device described above. In the operation panel 60, two grooves 61 are formed, and the lever 59 can be respectively inserted by pivoting about the longitudinal axis 57 in the grooves 61, so that a respective position of the rod 45 by means of the lever 59 and the control panel 60 can be positively fixed.

Claims (13)

  1. A holding apparatus (27) for a drill rod (15) of a taphole drilling machine (10), wherein the taphole drilling machine has a frame (14) with a drilling and percussion mechanism (16) movably arranged thereon, wherein the drilling and percussion mechanism has a drill rod mounting (17) for connecting the drill rod, wherein a gripping device (21) of the holding apparatus is arranged on the frame, wherein the gripping device serves for holding the drill rod relative to the drill rod mounting,
    characterized in that
    the drill rod can be fixed securely on the frame by means of the gripping device, wherein the holding apparatus has a drive device which can cause a pivoting of the gripping device, wherein the gripping device has claws (30), wherein the claws can be spaced so far apart from each other in an open position that the drill rod is released, wherein the claws can grip around the drill rod in a closed position such that the drill rod is guided by the claws, and wherein the claws can grip around the drill rod in a clamped position such that the drill rod is fixed between the claws in a force-fitting and/or form-fitting manner.
  2. The holding apparatus according to claim 1,
    characterized in that
    the gripping device (21) is arranged on an end (18) of the frame (14) which is oriented towards the taphole, said end being arranged opposite of the drilling and percussion mechanism (16).
  3. The holding apparatus according to claim 1 or 2,
    characterized in that
    the clamping elements (31) are respectively arranged on the claws (30) and securely connected to them.
  4. The holding apparatus according to any of the preceding claims,
    characterized in that
    the holding apparatus (27) has a drive unit which can cause a pivoting of the gripping device (21) into an open, closed or clamped position.
  5. The holding apparatus according to claim 4,
    characterized in that
    the drive unit is formed by a lever gear (22), a drive shaft (23) and an actuation cylinder (39), wherein the actuation cylinder is coupled to the drive shaft in such a manner that that the drive shaft is rotatable by means of the actuation cylinder, and wherein the drive shaft is coupled to the lever gear in such a manner that the lever gear can cause the pivoting of the gripping device (21) via the drive shaft.
  6. The holding apparatus according to claim 5,
    characterized in that
    the holding apparatus (27) has an adjusting device (25, 58) by means of which the closed or clamped position of the gripping device (21) can be adjusted.
  7. The holding apparatus according to claim 6,
    characterized in that
    a stop (47) for limiting a rotation of the drive shaft (23) is formed between the drive unit and the adjusting device (25, 58).
  8. The holding apparatus according to claim 7,
    characterized in that
    the actuation cylinder (39) is connected to the drive shaft (23) via a crank lever (41).
  9. The holding apparatus according to claim 8,
    characterized in that
    the stop (47) is formed between the crank lever (41) and the adjusting device (25, 58).
  10. The holding apparatus according to any of the claims 7 to 9,
    characterized in that
    the adjusting device (25, 58) has a stop element (43) for forming the stop, wherein the stop element has a close stop (47) for forming the closed position and a clamp stop for forming the clamped position, wherein the stop element is movable between a closed and a clamped position in such a manner that the close stop or, selectively, the clamp spot forms the stop.
  11. The holding apparatus according to claim 10,
    characterized in that
    the adjusting device (25, 58) has a spring (49) by means of which the stop element (43) can be moved into the closed position.
  12. The holding apparatus according to claim 10 or 11,
    characterized in that
    the adjusting device (25, 58) has a locking device by means of which the stop element (43) can be locked in the closed or clamped position.
  13. A method for removing a drill rod (15) from a drill rod mounting (17) of a taphole drilling machine (10), wherein the taphole drilling machine has a frame (14) with a drilling and percussion mechanism (16) arranged thereon, wherein the drilling and percussion mechanism has the drill rod mounting for connecting the drill rod, wherein a gripping device (21) is arranged on the frame, wherein the gripping device holds the drill rod relative to the drill rod mounting, wherein the gripping device has claws (30), wherein the claws grip around the drill rod in a closed position such that the drill rod is guided by the claws, wherein the claws grip around the drill rod in a clamped position such that the drill rod is fixed between the claws in a force-fitting and/or form-fitting manner,
    wherein the drill rod is fixed securely to the frame by means of the gripping device, and wherein the drill rod mounting is moved relative to the gripping device in a direction contrary to the feeding direction in such a manner that the drill rod is removed from the drill rod mounting, and wherein the claws are spaced so far apart from each other in an open position that the drill rod is released.
EP10171867.4A 2010-08-04 2010-08-04 Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod Not-in-force EP2415881B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10171867.4A EP2415881B1 (en) 2010-08-04 2010-08-04 Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod
JP2013522186A JP5876049B2 (en) 2010-08-04 2011-07-20 Drill rod holding device for taphole excavator and method for removing drill rod
CN201180038351.6A CN103052720B (en) 2010-08-04 2011-07-20 For the maintenance equipment of the drilling rod of iron perforater and the method for removing drilling rod
BR112013002694A BR112013002694A2 (en) 2010-08-04 2011-07-20 retainer for a drill rod from a race hole drill machine, and method for removing a drill rod
PCT/EP2011/062420 WO2012016833A2 (en) 2010-08-04 2011-07-20 Holding apparatus for a drill rod of a taphole drilling machine and method for removing a drill rod
KR1020137004553A KR101766881B1 (en) 2010-08-04 2011-07-20 Holding apparatus for a drill rod of a taphole drilling machine and method for removing a drill rod
RU2013105617/02A RU2559617C2 (en) 2010-08-04 2011-07-20 Machine for boring of blast-furnace tap hole and method of boring bar removal from such machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10171867.4A EP2415881B1 (en) 2010-08-04 2010-08-04 Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod

Publications (2)

Publication Number Publication Date
EP2415881A1 EP2415881A1 (en) 2012-02-08
EP2415881B1 true EP2415881B1 (en) 2013-12-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171867.4A Not-in-force EP2415881B1 (en) 2010-08-04 2010-08-04 Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod

Country Status (7)

Country Link
EP (1) EP2415881B1 (en)
JP (1) JP5876049B2 (en)
KR (1) KR101766881B1 (en)
CN (1) CN103052720B (en)
BR (1) BR112013002694A2 (en)
RU (1) RU2559617C2 (en)
WO (1) WO2012016833A2 (en)

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CN110374502A (en) * 2019-07-17 2019-10-25 瑙ｆ尝 A kind of mine coal cutter

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CN105756558B (en) * 2016-04-15 2017-09-29 周洪春 A kind of colliery embedded hole drill carriage
CN105903992B (en) * 2016-06-23 2021-12-14 中钢集团西安重机有限公司 Screw rod adjusting type drill rod clamping mechanism
CN111020089B (en) * 2019-12-16 2023-09-08 中钢集团西安重机有限公司 Automatic rod replacing method
CN112432506A (en) * 2020-11-25 2021-03-02 商都中建金马冶金化工有限公司 A open stifled eye machine for hot stove in ore deposit
CN112662828B (en) * 2020-12-09 2022-05-17 本钢板材股份有限公司 Hydraulic tapping machine
CN113265499B (en) * 2021-05-07 2022-09-13 中钢集团西安重机有限公司 Drill rod clamping method based on automatic rod changing device
CN113215340B (en) * 2021-05-07 2023-03-28 中钢集团西安重机有限公司 Automatic drill rod mounting or dismounting method of tap hole opening machine

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CN110374502B (en) * 2019-07-17 2020-09-15 解波 Mining coal mining machine

Also Published As

Publication number Publication date
RU2559617C2 (en) 2015-08-10
CN103052720A (en) 2013-04-17
JP5876049B2 (en) 2016-03-02
RU2013105617A (en) 2014-09-10
JP2013534281A (en) 2013-09-02
EP2415881A1 (en) 2012-02-08
WO2012016833A2 (en) 2012-02-09
KR20130137598A (en) 2013-12-17
KR101766881B1 (en) 2017-08-09
CN103052720B (en) 2015-09-16
WO2012016833A3 (en) 2012-04-12
BR112013002694A2 (en) 2016-05-31

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