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WO2013007350A2 - Tunneling and extraction machine - Google Patents

Tunneling and extraction machine Download PDF

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Publication number
WO2013007350A2
WO2013007350A2 PCT/EP2012/002762 EP2012002762W WO2013007350A2 WO 2013007350 A2 WO2013007350 A2 WO 2013007350A2 EP 2012002762 W EP2012002762 W EP 2012002762W WO 2013007350 A2 WO2013007350 A2 WO 2013007350A2
Authority
WO
WIPO (PCT)
Prior art keywords
support arm
carriage
setting device
anchor drilling
extraction machine
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.)
Ceased
Application number
PCT/EP2012/002762
Other languages
German (de)
French (fr)
Other versions
WO2013007350A3 (en
Inventor
Thomas Hürmann
Klaus Richter
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.)
Eickhoff Bergbautechnik GmbH
Original Assignee
Eickhoff Bergbautechnik 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
Application filed by Eickhoff Bergbautechnik GmbH filed Critical Eickhoff Bergbautechnik GmbH
Priority to AU2012283438A priority Critical patent/AU2012283438A1/en
Priority to EA201490276A priority patent/EA025014B1/en
Priority to CN201280034550.4A priority patent/CN103842617B/en
Publication of WO2013007350A2 publication Critical patent/WO2013007350A2/en
Publication of WO2013007350A3 publication Critical patent/WO2013007350A3/en
Anticipated expiration legal-status Critical
Priority to ZA2014/01096A priority patent/ZA201401096B/en
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/24—Mineral freed by means not involving slitting by milling means acting on the full working face, i.e. the rotary axis of the tool carrier being substantially parallel to the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/003—Machines for drilling anchor holes and setting anchor bolts

Definitions

  • the invention relates to a drivable mining and extraction machine for underground mining, with over the working face movable Schrammtechnikmaschineen, which are supported by a support arm which is pivotally mounted on the frame of the tunneling and mining machine, as well as with one of the tunneling and mining machine associated Ankerbohr- and -Setz noise, which is pivotally mounted on the front end of a carriage which is slidably guided on a carriage guide, wherein the Ankerbohr- and -Setzinraum is hinged to the carriage and the carriage guide.
  • the invention proposes starting from the jacking and mining machine of the type mentioned above, that the carriage guide is arranged on the upper side of the support arm and is supported by the support arm.
  • the Ankerbohr- and -setz can be performed over the largest possible area without having to implement the propulsion and extraction machine, it is provided that the carriage is provided in its front in the forward direction end region with a transverse to the direction of advance sliding axis, on which the anchor drilling and setting device is mounted displaceably transversely to the direction of advance. This makes it possible to move the Ankerbohr- and -Setzvorides over a large area and transverse to the advancing direction to drill there anchor holes and anchor.
  • a particularly good use of space above the support arm and a stable support of the carriage results when the carriage guide is integrally or at least rigidly connected to the support arm and inclined in the rest position of the support arm in the drive direction horizontally and inclined at an acute angle to the longitudinal axis of the support arm.
  • the carriage guide is substantially horizontal at rest of the support arm and provides a secure support for the carriage and located on the carriage Ankerbohr- and -Setzvorraum.
  • Fig. 1 A side view of the propulsion
  • FIG. 2 the propulsion mining machine shown in FIG. 1
  • the propulsion and mining machine shown in the drawing has a machine frame designated by the reference numeral 1.
  • the machine frame 1 is movable on caterpillars 2 and front provided with a support arm 3, the cutting rollers 4 carries cut on a mining front 5, the upcoming mountains los and the los cut heap of a loader 6, which loads the los cut heap and one not feed device shown feeds.
  • the support arm 3 is provided on its upper side with a slide guide 7, which is integrally or at least rigidly connected to the support arm 3 and extends in relation to the longitudinal axis X of the support arm 3 at an acute angle ⁇ , such that the slide guide 7 at lowered, in the rest position located support arm (see Figures 1 and 3) extends horizontally. In this rest position shown in Figures 1 and 3, the cutting rollers 4 rest on the track sole and support in this way additionally the support arm. 3
  • An anchor drilling and setting device 10 is mounted on the carriage 8 in the front end region thereof.
  • This anchor drilling and setting device is relative to the carriage 8 between an inactive position (see Figures 1 and 2) and a working position (see Figure 3) pivotable.
  • the anchor drilling and setting device 10 In the inactive position, the anchor drilling and setting device 10 is folded onto the carriage 8 and the carriage guide 7 (see Figures 1 and 2) and so requires little space above the support arm 3.
  • the working position is the Anchor drilling and setting device 10 in contrast folded up so that their working direction is perpendicular to the carriage guide 7 and the carriage 8 guided thereon.
  • the carriage 8 is provided in its forward direction in the end region with a transverse to the carriage guide 7 sliding axis 1 1 on which the pivotable anchor drilling and setting device 10 transverse to the carriage guide 7, d. H. perpendicular to the paper plane of Figures 1 to 3, is displaceable. In this way, you can reach with the anchor drilling and setting a relatively large Hangend Scheme without having to implement the propulsion and mining machine.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The invention relates to a mobile tunneling and extraction machine for underground mining, comprising cutting tools (4) that can be moved across the working face and are supported by a support arm (3), which is pivotably mounted to the frame (2) of the tunneling and extraction machine (1), and having an anchor drilling and setting device (10) associated with the tunneling and extraction machine (1), which is pivotably mounted to the front end of a slide (8), which is movably guided on a slide guide (7), wherein the anchor drilling and setting device (10) can be folded onto the slide (7) and the slide guide (8). In order to save installation space for the anchor drilling and setting device (10) in such a tunneling and extraction machine (1), and to provide better support for the anchor drilling and setting device (10) during operation, according to the invention the slide guide (7) is arranged on the upper face of the support arm (3) and is supported by the support arm (3).

Description

Vortriebs- und Gewinnungsmaschine Die Erfindung betrifft eine fahrbare Vortriebs- und Gewinnungsmaschine für den untertägigen Bergbau, mit über die Ortsbrust bewegbaren Schrämwerkzeugen, die von einem Tragarm getragen werden, der verschwenkbar am Rahmen der Vortriebs- und Gewinnungsmaschine befestigt ist, sowie mit einer der Vortriebsund Gewinnungsmaschine zugeordneten Ankerbohr- und -Setzeinrichtung, die schwenkbar am vorderen Ende eines Schlittens befestigt ist, der verschieblich auf einer Schlittenführung geführt ist, wobei die Ankerbohr- und -Setzeinrichtung an den Schlitten und die Schlittenführung anklappbar ist.  The invention relates to a drivable mining and extraction machine for underground mining, with over the working face movable Schrammwerkzeugen, which are supported by a support arm which is pivotally mounted on the frame of the tunneling and mining machine, as well as with one of the tunneling and mining machine associated Ankerbohr- and -Setzeinrichtung, which is pivotally mounted on the front end of a carriage which is slidably guided on a carriage guide, wherein the Ankerbohr- and -Setzinrichtung is hinged to the carriage and the carriage guide.

Bei einer nach dem Stand der Technik (DE 10 2004 059 943 B4) bekannten Vortriebs- und Gewinnungsmaschine der angegebenen Art ist die den Schlitten mit der Ankerbohr- und -Setzvorrichtung tragenden Schlittenführung oberhalb der Maschine an deren Rahmen befestigt, so dass oberhalb der Maschine zusätzlicher Bauraum für die Schlittenführung und den Schlitten benötigt wird. In one known from the prior art (DE 10 2004 059 943 B4) driving and mining machine of the specified type, the slide with the Ankerbohr- and -Setzvorrichtung bearing carriage guide is attached to the frame above the machine, so that above the machine additional Space for the slide guide and the carriage is needed.

Es ist deshalb Aufgabe der Erfindung, durch bessere Raumausnutzung zu einer insgesamt deutlich niedrigeren Bauweise zu kommen. Zur Lösung dieser Aufgabe schlägt die Erfindung ausgehend von der Vortriebsund Gewinnungsmaschine der eingangs genannten Art vor, dass die Schlittenführung an der Oberseite des Tragarms angeordnet ist und von dem Tragarm getragen wird. It is therefore an object of the invention to come through better space utilization to a significantly lower overall design. To solve this problem, the invention proposes starting from the jacking and mining machine of the type mentioned above, that the carriage guide is arranged on the upper side of the support arm and is supported by the support arm.

BESTÄTIGUNGSKOPIE Bei der Vortriebs- und Gewinnungsmaschine gemäß der Erfindung ist es möglich, die Schlittenführung und den darauf gleitenden Schlitten nahezu vollständig in den Tragarm zu integrieren, so dass erheblich weniger Bauraum benötigt wird. Die Erfindung nutzt geschickt den Raum oberhalb des Tragarms für die Unterbringung von Schlittenführung und Schlitten. Dadurch, dass die Schlittenführung praktisch Bestandteil des Tragarms wird, nutzt man außerdem dessen besonders hohe Stabilität, die er als Tragarm für die Schrämwalzen ohnehin haben muss. Dadurch, dass sich der Tragarm der Schrämwalzen während der Ankerbohr- und -setzarbeiten über die Schrämwalzen am Liegenden abstützen kann, bietet der Tragarm für die Ankerbohr- und - setzarbeiten ein besonders stabiles Widerlager. CONFIRMATION COPY In the propulsion and extraction machine according to the invention, it is possible to almost completely integrate the carriage guide and the slide sliding thereon in the support arm, so that considerably less installation space is required. The invention cleverly utilizes the space above the support arm for housing the carriage guide and carriage. The fact that the slide guide is practically part of the support arm, it also uses its particularly high stability, which he must have anyway as a support arm for the cutting rollers. Due to the fact that the support arm of the cutting rollers can be supported by the cutting rollers on the horizontal during the anchor drilling and setting work, the support arm for the anchor drilling and setting work provides a particularly stable abutment.

Damit die Ankerbohr- und -setzarbeiten über einen möglichst großen Flächenbereich ausgeführt werden können, ohne die Vortriebs- und Gewinnungsmaschine umsetzen zu müssen, ist vorgesehen, dass der Schlitten in seinem in Vortriebsrichtung vorne liegenden Endbereich mit einer quer zur Vortriebsrichtung verlaufenden Gleitachse versehen ist, auf welcher die Ankerbohr- und -Setzvorrichtung quer zur Vortriebsrichtung verschiebbar gelagert ist. Hierdurch ist es möglich, die Ankerbohr- und -Setzvorrichtung über einen großen Bereich auch quer zur Vortriebsrichtung zu verschieben, um dort Ankerlöcher zu bohren und Anker zu setzen. Thus, the Ankerbohr- and -setzarbeiten can be performed over the largest possible area without having to implement the propulsion and extraction machine, it is provided that the carriage is provided in its front in the forward direction end region with a transverse to the direction of advance sliding axis, on which the anchor drilling and setting device is mounted displaceably transversely to the direction of advance. This makes it possible to move the Ankerbohr- and -Setzvorrichtung over a large area and transverse to the advancing direction to drill there anchor holes and anchor.

Eine besonders gute Raumausnutzung oberhalb des Tragarms und eine stabile Abstützung des Schlittens ergibt sich, wenn die Schlittenführung einstückig oder zumindest starr mit dem Tragarm verbunden ist und bei Ruhestellung des Tragarms in Vortriebsrichtung horizontal und gegen die Längsachse des Tragarms in spitzem Winkel geneigt verläuft. Auf diese Weise wird erreicht, dass die Schlittenführung bei Ruhestellung des Tragarms im Wesentlichen horizontal verläuft und eine sichere Abstützung für den Schlitten und die auf dem Schlitten befindliche Ankerbohr- und -Setzvorrichtung bietet. A particularly good use of space above the support arm and a stable support of the carriage results when the carriage guide is integrally or at least rigidly connected to the support arm and inclined in the rest position of the support arm in the drive direction horizontally and inclined at an acute angle to the longitudinal axis of the support arm. In this way, it is achieved that the carriage guide is substantially horizontal at rest of the support arm and provides a secure support for the carriage and located on the carriage Ankerbohr- and -Setzvorrichtung.

Ein Ausführungsbeispiel wird im folgenden anhand der Zeichnung näher erläutert: Es zeigen: Fig. 1 : Eine Seitenansicht der Vortriebs- und An exemplary embodiment is explained in more detail below with reference to the drawing: in which: Fig. 1: A side view of the propulsion and

Gewinnungsmaschine gemäß der Erfindung in der Ruhestellung bei abgesenktem Tragarm und inaktiver Ankerbohr- und -Setzeinrichtung;  Recovery machine according to the invention in the rest position with lowered support arm and inactive anchor drilling and setting device;

Fig. 2: die in Figur 1 dargestellte Vortriebs- Gewinnungsmaschine bei FIG. 2: the propulsion mining machine shown in FIG

Gewinnungsarbeit;  Recovery work;

Fig. 3: die in Figur 1 dargestellte Vortriebs- und Fig. 3: the driving and illustrated in Figure 1

Gewinnungsmaschine beim Ankerbohren und Ankersetzen.  Extraction machine for anchor drilling and anchor setting.

Die in der Zeichnung dargestellte Vortriebs- und Gewinnungsmaschine weist einen mit dem Bezugszeichen 1 bezeichneten Maschinenrahmen auf. Der Maschinenrahmen 1 ist auf Raupen 2 verfahrbar und vorne mit einem Tragarm 3 versehen, der Schrämwalzen 4 trägt, die an einer Abbaufront 5 das anstehende Gebirge los schneiden und das los geschnittene Haufwerk einer Ladevorrichtung 6 zuführt, die das los geschnittene Haufwerk lädt und einer nicht dargestellten Fördervorrichtung zuführt. The propulsion and mining machine shown in the drawing has a machine frame designated by the reference numeral 1. The machine frame 1 is movable on caterpillars 2 and front provided with a support arm 3, the cutting rollers 4 carries cut on a mining front 5, the upcoming mountains los and the los cut heap of a loader 6, which loads the los cut heap and one not feed device shown feeds.

Der Tragarm 3 ist an seiner Oberseite mit einer Schlittenführung 7 versehen, die einstückig oder zumindest starr mit dem Tragarm 3 verbunden ist und in Bezug auf die Längsachse X des Tragsarms 3 in einem spitzen Winkel α verläuft, derart, dass die Schlittenführung 7 bei abgesenktem, in der Ruhestellung befindlichem Tragarm (vgl. Figuren 1 und 3) horizontal verläuft. Bei dieser in den Figuren 1 und 3 dargestellten Ruhestellung liegen die Schneidwalzen 4 auf der Streckensohle auf und stützen auf diese Weise zusätzlich den Tragarm 3. The support arm 3 is provided on its upper side with a slide guide 7, which is integrally or at least rigidly connected to the support arm 3 and extends in relation to the longitudinal axis X of the support arm 3 at an acute angle α, such that the slide guide 7 at lowered, in the rest position located support arm (see Figures 1 and 3) extends horizontally. In this rest position shown in Figures 1 and 3, the cutting rollers 4 rest on the track sole and support in this way additionally the support arm. 3

In der Schlittenführung 7 ist ein Schlitten 8 verschiebbar geführt. Zum Verschieben dient ein der Schlittenführung 7 zugeordneter Druckmittelzylinder 9. In the carriage guide 7, a carriage 8 is guided displaceably. To displace one of the carriage guide 7 associated pressure cylinder 9th

An dem Schlitten 8 ist in dessen vorderen Endbereich eine Ankerbohr- und- Setzeinrichtung 10 gelagert. Diese Ankerbohr- und -Setzeinrichtung ist relativ zu dem Schlitten 8 zwischen einer inaktiven Stellung (vgl. Figuren 1 und 2) und einer Arbeitsstellung (vgl. Figur 3) verschwenkbar. In der inaktiven Stellung ist die Ankerbohr- und -Setzeinrichtung 10 an den Schlitten 8 und die Schlittenführung 7 herangeklappt (vgl. Figuren 1 und 2) und benötigt so wenig Raum oberhalb des Tragsarms 3. In der Arbeitsstellung (vgl. Figur 3) ist die Ankerbohr- und -Setzeinrichtung 10 demgegenüber derart hochgeklappt, dass ihre Arbeitsrichtung senkrecht zur Schlittenführung 7 und dem daran geführten Schlitten 8 verläuft. An anchor drilling and setting device 10 is mounted on the carriage 8 in the front end region thereof. This anchor drilling and setting device is relative to the carriage 8 between an inactive position (see Figures 1 and 2) and a working position (see Figure 3) pivotable. In the inactive position, the anchor drilling and setting device 10 is folded onto the carriage 8 and the carriage guide 7 (see Figures 1 and 2) and so requires little space above the support arm 3. In the working position (see Figure 3) is the Anchor drilling and setting device 10 in contrast folded up so that their working direction is perpendicular to the carriage guide 7 and the carriage 8 guided thereon.

Wie weiterhin der Zeichnung entnommen werden kann, ist der Schlitten 8 in seinem in Vorschubrichtung vorne liegenden Endbereich mit einer quer zur Schlittenführung 7 verlaufenden Gleitachse 1 1 versehen, auf der die verschwenkbare Ankerbohr- und -Setzvorrichtung 10 quer zur Schlittenführung 7, d. h. senkrecht zur Papierebene der Figuren 1 bis 3, verschiebbar ist. Auf diese Weise erreicht man mit der Ankerbohr- und -Setzvorrichtung einen verhältnismäßig großen Hangendbereich, ohne die Vortriebs- und Gewinnungsmaschine umsetzen zu müssen. As can still be seen from the drawing, the carriage 8 is provided in its forward direction in the end region with a transverse to the carriage guide 7 sliding axis 1 1 on which the pivotable anchor drilling and setting device 10 transverse to the carriage guide 7, d. H. perpendicular to the paper plane of Figures 1 to 3, is displaceable. In this way, you can reach with the anchor drilling and setting a relatively large Hangendbereich without having to implement the propulsion and mining machine.

Claims

Patentansprüche claims 1 . Fahrbare Vortriebs- und Gewinnungsmaschine für den untertägigen Bergbau, mit über die Ortsbrust bewegbaren Schrämwerkzeugen (4), die von einem Tragarm (3) getragen werden, der verschwenkbar am Rahmen (2) der Vortriebs- und Gewinnungsmaschine (1 ) befestigt ist, sowie mit einer der Vortriebs- und Gewinnungsmaschine (1 ) zugeordneten Ankerbohr- und -Setzeinrichtung (10), die schwenkbar am vorderen Ende eines Schlittens (8) befestigt ist, der verschieblich auf einer Schlittenführung (7) geführt ist, wobei die Ankerbohr- und -Setzeinrichtung (10) an den Schlitten (8) und die Schlittenführung (7) anklappbar ist. d a d u r c h g e k e n n z e i c h n e t, dass die Schlittenführung (7) an der Oberseite des Tragsarms (3) angeordnet ist und vom Tragarm (3) getragen wird. 1 . Mobile mining and mining machine for underground mining, with movable over the working face cutting tools (4), which are supported by a support arm (3) which is pivotally mounted on the frame (2) of the propulsion and mining machine (1), as well as with an anchor drilling and setting device (10) associated with the propulsion and mining machine (1) pivotally mounted at the front end of a carriage (8) slidably supported on a carriage guide (7), the anchor drilling and setting device (10) on the carriage (8) and the carriage guide (7) can be folded. That is, the carriage guide (7) is arranged at the top of the support arm (3) and is supported by the support arm (3). 2. Vortriebs- und Gewinnungsmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass der Schlitten (8) in seinem in Vorschubrichtung vorne liegenden Endbereich mit einer quer zur Vortriebsrichtung verlaufenden Gleitachse (1 1 ) versehen ist, auf welcher die Ankerbohr- und Setzeinrichtungen (10) quer zur Vortriebsrichtung verschiebbar gelagert ist. 2. propulsion and extraction machine according to claim 1, characterized in that the carriage (8) is provided in its forward direction in the feed end region with a transverse to the direction of advancement sliding axis (1 1) on which the Ankerbohr- and setting devices (10). is mounted displaceably transversely to the direction of advance. 3. Vortriebs- und Gewinnungsmaschine nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Schlittenführung (7) einstückig oder zumindest starr mit dem Tragarm (3) verbunden ist und bei Ruhestellung des Tragarms (3) in Vortriebsrichtung horizontal und gegen die Längsachse (X) des Tragsarms (3) in spitzem Winkel (2) geneigt verläuft. 3. Propulsion and extraction machine according to claims 1 and 2, characterized in that the carriage guide (7) is integrally or at least rigidly connected to the support arm (3) and at rest position of the support arm (3) in the drive direction horizontally and against the longitudinal axis ( X) of the support arm (3) at an acute angle (2) is inclined.
PCT/EP2012/002762 2011-07-13 2012-07-02 Tunneling and extraction machine Ceased WO2013007350A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2012283438A AU2012283438A1 (en) 2011-07-13 2012-07-02 Tunneling and extraction machine
EA201490276A EA025014B1 (en) 2011-07-13 2012-07-02 Tunneling and extraction machine
CN201280034550.4A CN103842617B (en) 2011-07-13 2012-07-02 Driving and Mars Miner
ZA2014/01096A ZA201401096B (en) 2011-07-13 2014-02-12 Tunneling and extraction machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011107697.6 2011-07-13
DE201110107697 DE102011107697B4 (en) 2011-07-13 2011-07-13 Propulsion and mining machine

Publications (2)

Publication Number Publication Date
WO2013007350A2 true WO2013007350A2 (en) 2013-01-17
WO2013007350A3 WO2013007350A3 (en) 2013-12-19

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ID=46604243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/002762 Ceased WO2013007350A2 (en) 2011-07-13 2012-07-02 Tunneling and extraction machine

Country Status (6)

Country Link
CN (1) CN103842617B (en)
AU (1) AU2012283438A1 (en)
DE (1) DE102011107697B4 (en)
EA (1) EA025014B1 (en)
WO (1) WO2013007350A2 (en)
ZA (1) ZA201401096B (en)

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CN112096405A (en) * 2020-09-01 2020-12-18 中国煤炭科工集团太原研究院有限公司 Advance drilling device of tunneling and anchoring all-in-one machine, tunneling and anchoring all-in-one machine and advanced drilling method
RU2748264C1 (en) * 2019-10-23 2021-05-21 Китайский Университет Горного Дела И Технологии Detecting, digging, supporting, anchoring and transmitting complex machine system for rapid well digging and its application method
WO2023021460A1 (en) * 2021-08-18 2023-02-23 African Rainbow Minerals Platinum (Pty) Ltd. Reef cutting machine

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RU185266U1 (en) * 2017-07-28 2018-11-29 Общество С Ограниченной Ответственностью "Корум Майнинг" (Ооо "Корум Майнинг") MINING MACHINE WITH ANCHOR INSTALLER
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CN114017020B (en) * 2021-11-08 2024-07-26 中国煤炭科工集团太原研究院有限公司 Tunneling system and bolter
CN114017021B (en) * 2021-11-08 2024-04-05 中国煤炭科工集团太原研究院有限公司 Tunneling and anchoring machine and tunneling system

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WO2023021460A1 (en) * 2021-08-18 2023-02-23 African Rainbow Minerals Platinum (Pty) Ltd. Reef cutting machine

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EA201490276A1 (en) 2014-05-30
CN103842617B (en) 2016-03-16
DE102011107697A1 (en) 2013-01-17
DE102011107697B4 (en) 2013-01-31
WO2013007350A3 (en) 2013-12-19
EA025014B1 (en) 2016-11-30
ZA201401096B (en) 2014-11-26
AU2012283438A1 (en) 2014-03-06
CN103842617A (en) 2014-06-04

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