EP3405648A1 - Machine d'extraction et procédé pour faire fonctionner une machine d'extraction - Google Patents

Machine d'extraction et procédé pour faire fonctionner une machine d'extraction

Info

Publication number
EP3405648A1
EP3405648A1 EP17741735.9A EP17741735A EP3405648A1 EP 3405648 A1 EP3405648 A1 EP 3405648A1 EP 17741735 A EP17741735 A EP 17741735A EP 3405648 A1 EP3405648 A1 EP 3405648A1
Authority
EP
European Patent Office
Prior art keywords
cutting head
mining machine
rock
cutting
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17741735.9A
Other languages
German (de)
English (en)
Other versions
EP3405648B1 (fr
EP3405648A4 (fr
Inventor
Gunnar Bergling
Emil OLOFSSON
Fredrik Saf
Sverker Hartwig
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.)
Epiroc Rock Drills AB
Original Assignee
Epiroc Rock Drills AB
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 Epiroc Rock Drills AB filed Critical Epiroc Rock Drills AB
Publication of EP3405648A1 publication Critical patent/EP3405648A1/fr
Publication of EP3405648A4 publication Critical patent/EP3405648A4/fr
Application granted granted Critical
Publication of EP3405648B1 publication Critical patent/EP3405648B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/1013—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/1013—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom
    • E21D9/102—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a longitudinally extending boom being pivotable about a vertical and a transverse axis

Definitions

  • the invention concerns a mining machine for driving tunnels, galleries or the like, said mining machine including: a rotational cutting head having a plurality of rock engaging cutting elements distributed on its periphery, a rotator for rotationally driving said cutting head, said cutting head having a rotation axis extending essentially vertically, when the mining machine is aligned on horizontal ground, a
  • positioning arrangement arranged to position the cutting head between cuts, said positioning arrangement being arranged to swing the cutting head horizontally from a first side to a second side to reach first side and second side positions respectively, means for forcing the cutting head against rock to be worked so as to disintegrate the rock, means for
  • the invention also concerns a method for operating such a mining machine.
  • Tunnels and galleries in mines are ineffective spaces to the extent that they normally only comprise transport paths between sites where valuable ore is extracted. Production of tunnels and galleries is certainly time, labor and energy consuming and requires expensive equipment and is thereby expensive. For that reason it is problematic having bulky rigs requiring spacious tunnels for their transport since time, energy and resources are thus required to complete the
  • a mining machine for driving tunnels, galleries or the like, in that the cutting head on an upper side is attached to a one-sided support unit such that the lower side of the cutting head is free from support means, that the mining machine includes a pressing unit arranged to press the cutting head linearly against rock to be worked, essentially in a longitudinal direction of the mining machine when aligned, and that the rotator is arranged to rotate the cutting head in a first rotational direction during a cut where the cutting head is in a first side
  • disintegrated rock material is forced by the cutting head from the respective side to which the cutting head is swung to a more central part of an excavation site.
  • the distinguishing features brings along important advantages.
  • One major advantage is that the cutting head can be closed at its lower side making complicated seals between relatively movable part unnecessary. Seals on the upper side of the cutting head can be made easily accessible for
  • the rotator motor, the bearings and other components positioned inside the cutting head are advantageously easily accessible for inspection and for service through a removable inspection cover positioned at the top side of the cutting head holder.
  • the feature that the rotator is arranged to rotate the cutting head in different directions such that disintegrated rock material (muck) is forced by the cutting head from the respective side to which the cutting head is swung to a more central part of the excavation site makes muck handling
  • muck transport means transporting away released material (muck transport means) is typically placed centrally at the lower front of the mining machine. This feature allows using a more simple muck input feeder at the front of the machine.
  • the cutting head is advantageously formed as a rotating wheel having rock engaging and rock disintegrating elements distributed over its surface seen in a circumference direction as well as seen in an axial direction, in parallel with a rotation axis for the cutting head.
  • the cutting elements are also advantageously rotatable, at least part disc-shaped round elements that are brought to rotate and cut parallel grooves in the rock and thereby
  • Said positioning arrangement is advantageously arranged to also swing the cutting head vertically up and down to reach upper and lower positions respectively.
  • protrusions hereby force the muck being below the cutting head radially outwards from the rotation axis of the cutting head towards its periphery at the same time as they force the muck towards the center of the machine front.
  • the muck is thereby imparted a combinatory movement out (from the rotation axis) - to the front center (of the mining machine), making it easy to collect by a muck transport input arrangement.
  • Said guide surfaces hereby suitably form an open, positive outward angle above 90° to a radius of the cutting head, which is a positive angle as seen in the prevailing rotational direction.
  • This angle is suitably between 110° and 160° and preferably between 125° and 145°.
  • At least a first selection of said drive protrusions are provided with guide surfaces arranged to be operative in the first rotational direction and at least a second selection of said drive protrusions is provided with guide surfaces arranged to be operative in the second rotational direction.
  • Selection means in practice a number of drive protrusions being smaller than the total number of drive protrusions.
  • all drive protrusions have guide surfaces operative in both rotational directions.
  • the drive protrusions are preferably
  • the cutting head has a plurality of head scrapers, that are extending, seen in axial directions of the cutting head, at least partly past the cutting elements which contributes to removing partly loosened rock material from the rock face in an advantageous way.
  • a muck collecting apron is arranged at a front position of the mining machine below the cutting head.
  • the muck collecting apron is preferably provided with muck discharge wheels for driving muck to a conveyer belt.
  • the rotator is enclosed inside said cutting head. This feature results in that rotator motor torque is easily transmitted to the cutting head and that complicated gearing can be avoided. This solution also is space saving, since the rotator occupies a normally empty space.
  • the support unit preferably includes a bearing support member arranged to enclose the rotator in an inside and to support cutting head bearings on an outside.
  • the bearing support is preferably short and wide pipe-shaped with one end attached to the support unit. This solution gives a rigid and strong attachment with easy measures.
  • the rotator shaft is preferably directly connected to the cutting head. This is preferred since it is i.a. economic and space saving but it is not excluded that the connection is indirect over a gear transmission.
  • the free end of the cutting head being its lower side is defined by a torque transmitting web portion of the cutting head for strength and stability.
  • the cutting head is suitably peripherally essentially cylindrical and has supports for the bearings on its inside.
  • the bearing support member is connected to a boom of the support unit in the form of a support boom through annular contact.
  • the bearing support member has at least one annular inside rotator support flange for mounting of the rotator.
  • the bearing support member is axially extending and essentially ring-shaped (pipe-shaped) .
  • the invention also relates to a method of driving tunnels, galleries or the like, with the aid of a mining machine including: a rotational cutting head having a
  • the method including: rotationally driving said cutting head having a rotation axis extending essentially vertically, when the mining machine is aligned on horizontal ground, positioning the cutting head between cuts by swinging the cutting head horizontally from a first side to a second side, forcing the cutting head against rock to be worked so as to disintegrate the rock, and transporting away released material.
  • the method is distinguished by pressing the cutting head linearly against rock to be worked, essentially in a longitudinal direction of the mining machine when aligned by forcing the cutting head with the aid of a one-sided support unit such that the lower side of the cutting head is free from support means, and rotating the cutting head in a first rotational direction during a cut where the cutting head is swung to the first side and rotating the cutting head in a second rotational direction in a cut where the cutting head is swung to the second side so that disintegrated rock material is forced by the cutting head from the respective side to which the cutting head is swung to a more central part of an excavation site.
  • the method preferably includes driving disintegrated rock material below the cutting head radially outwards, when rotating the cutting head, with the aid of a plurality of drive protrusions having guide surfaces arranged on the lower side of the cutting head.
  • Fig. 1 shows a side view of a mining machine according to the invention
  • Fig. 2 shows a top plan view of the mining machine in Fig. 1,
  • Fig. 3a and b show side views of the mining machine in Fig. 1 with the cutting head in different positions
  • Fig. 4 shows a top plan view of the mining machine in Fig. 1 with the cutting head swung to a first side
  • Fig. 5 shows a front part of the mining machine in larger scale in a perspective view
  • Fig. 6 shows a front part of the mining machine in larger scale in a front view
  • Fig. 7a, b and c show details of a lower side of
  • Fig. 8 shows a cutting head and a support unit of the mining machine in a vertical section
  • Fig. 9 shows diagrammatically an inventive method
  • FIGs. 1 and 2 show a mining machine 1 including a front unit 2 and a rear unit 3, which are interconnected over a joint arrangement 4.
  • a cutting head 5 which is formed basically as a rotating wheel having rock engaging and rock disintegrating elements distributed over its surface seen in a circumference direction (around the cutting head) as well as seen in an axial direction, in parallel with a rotation axis AROT for the cutting head.
  • the rotation axis AROT is in the shown example included in a central plane C (see Fig. 2) extending essentially vertically when the mining machine is positioned on horizontal ground (and when the mining machine is aligned) .
  • the cutting head 5 is rotationally drivable through a rotator (see Fig. 8) being positioned inside the cutting head 5.
  • the cutting head is supported by a cutting head holder 13 and is also swingable by the aid of a positioning arrangement including positioning cylinders (whereof upper positioning cylinders 12 ' and 12 ' ' are shown) allowing for positioning the cutting head in vertical directions in order to cut higher cuts (see Fig. 3b) for forming a roof of a driven tunnel and lower cuts (see Fig. 3a) for forming floor or ground of said tunnel .
  • the arrangement for cutting head swing can be arranged in various ways and in the embodiment with upper positioning cylinders 12 ' and 12 ' ' , the positioning arrangement 12 also includes (not shown) one or more lower positioning cylinder (- s) which is/are connected to a lower region of the cutting head holder 13.
  • Fig. 2 also shows a removable inspection cover 37 positioned at the top side of the cutting head holder 13.
  • Seals, the rotator motor, the bearings and other components positioned inside the cutting head are advantageously easily accessible for inspection and for service through the
  • the cutting head 5 can also be swung laterally in order to perform drifting when extended width of the cut tunnel is required.
  • arrangement 12 is arranged also to position the cutting head 5 between cuts by swinging the cutting head horizontally to a first side position, which is represented in Fig. 4, or to a second side position (not shown) .
  • a pressing unit (not shown) is included in the front unit 2 which forces the rotating cutting head with its positioning arrangement linearly forward for performing the cutting, drifting, or driving face, wherein engaged rock is
  • the pressing unit can for example include powerful hydraulic actuator (-s) and/or a power linkage.
  • Said means 7 includes a ground engaging scraper or apron having mechanical means in the form of rotational wheels with feeder arms (see Figs. 5 and 6) for collecting the
  • the front unit 2 also exhibits crawler bands whereof one is shown and indicated with 6.
  • upper stabilizing units 10 for engagement with the tunnel roof and lower stabilizing units 11 for ground contact. These stabilizing units are forced against the meeting roof and ground respectively in order to secure the mining machine and counteract the considerable forces created during
  • a control unit is denoted CPU.
  • the rear unit 3 is provided with rear crawler bands 8 and drive means for the working equipment including drive motor means 22, transmission means 23 and pumps etc. 24 (only indicated in Fig.2) .
  • drive motor means 22 for power generation
  • transmission means 23 for power generation
  • pumps etc. 24 only indicated in Fig.2
  • hydraulic pumps for supply of pressure fluid to various components such as the cutting head and the crawler bands.
  • the bolting equipment units 9 At the rear part of the front unit 2 there are positioned two bolting equipment units 9 that are arranged for securing the roof more or less continuously during mining.
  • the bolting equipment units 9 preferably work with self-drilling bolts for simplification of the equipment.
  • Swing cylinders together with a central swing axis ASWING provide means for swinging the front and rear units 2 and 3 of the mining machine relative to each other.
  • This central joint arrangement exhibits an opening, through which the material band for disintegrated material is led for subsequently discharge .
  • the positioning arrangement for the cutting head 5 indicated with 12 actuates the cutting head holder 13 in the form of a support boom so as to be pivoted in a cutting head swing joint assembly 14 in respect of the remainder of the front unit 2 and to be controlled for lateral as well as vertical swinging through the upper and lower positioning cylinders.
  • the cutting head swing joint assembly allows more or less universal (although limited) swing up and down as well as from side to side.
  • the pair of upper positioning cylinders (12 ' and 12 ' ' ) and the one or more lower positioning cylinder (-s) together with the cutting head swing joint assembly 14 provide such swing on the one hand since the respective upper and lower positioning cylinders are disposed in planes respectively above and below an essentially horizontal axis ALIFT for swinging the cutting head up and down around the cutting head swing joint assembly 14. Extending the upper positioning cylinders (and shortening the lower positioning cylinder (-s)) results in lowering the cutting head and extending the lower positioning cylinder (-s) (and shortening the upper positioning cylinders) results in lifting the cutting head. This is illustrated in Figs. 3a and 3b.
  • the pairs of lateral positioning cylinders are disposed laterally on each side of the cutting head swing joint assembly 14. Extending the positioning cylinder (-s) on one side and shortening the positioning cylinder (-s) on the other side results in side swinging the cutting head essentially around an axis AHEAD. Lifting/lowering and side swinging of the cutting head can of course be
  • Fig. 4 shows the cutting head swung into a first side position.
  • the cutting head is arranged to rotate in a first rotational direction DRI during a cut.
  • muck is forced by the cutting head from the first side, to which the cutting head is swung, of a part of a tunnel under
  • the rotator When excavating at the other side of the tunnel, the rotator is arranged to rotate the cutting head in a second rotational direction in a cut where the cutting head is swung to a second side position (not shown) .
  • Fig. 5 is a perspective view of the mining machine 1 showing the cutting head 5 uplifted.
  • the axis ALIFT is shown below a plane through the positioning cylinders 12 ' and 12 ' (only 12 ' ' shown) .
  • 36 indicates head scrapers extending radially as well as axially at the outer periphery of the cutting head. The head scrapers aid in removal of rock being partly loosened because of the action of cutting elements 5'. At least a selection of the head scrapers preferably at least partly protrude axially past the cutting elements 5' and also contributes in feeding muck up on the apron 7.
  • Fig. 6 shows the cutting head 5 from the front.
  • the cutting elements 5' which in this case are rotatable, at least part disc-shaped round elements that are brought to rotate and cut grooves in the rock when the rotating cutting head is pressed with high force during a cut for drifting, so as to produce parallel grooves and thereby disintegrate the rock.
  • C indicates the central plane mentioned above.
  • the muck collecting scraper apron 7 is arranged slightly inclined at a front position below the cutting head 5.
  • the apron is provided with rotational muck discharge wheels 15 for driving muck that is present on the apron to a conveyer belt 16. Also is shown the lower side of the cutting head 5 with a plurality of drive protrusions 17.
  • Fig. 7a shows diagrammatically the lower side of the cutting head 5 with drive protrusions in more detail.
  • Drive protrusions 17 ' , 17 ' ' and 17 ' ' ' are here positioned with their top ends at three different radial distances, Ri, R2 and R3 respectively, from the rotation axis AROT SO as to be able to influence encountered muck at different radial levels.
  • All drive protrusions 17 ' , 17 ' ' and 17 ' ' ' have guide surfaces 18 being operative in either rotational direction so as to be able to influence muck when the cutting head is rotating in both directions. All said shown guide surfaces 18 hereby form an open, positive outward angle a of about 135° to a radius of the cutting head, which is a positive angle as seen in the prevailing rotational direction.
  • Fig. 7b shows the lower side of a cutting head 5 with drive protrusions 17 (only two of a greater plurality shown) which are each provided with a guide surface 18 being
  • protrusions 17 have guide surfaces 18 being concavely curved.
  • the two drive protrusions 17 in this embodiment together influence muck when the cutting head is rotating in both directions. It is evident that the cutting head in practice is provided with a plurality of pairs of drive protrusions 17 distributed around the rotation axis and radially from the rotation axis.
  • Other shapes of drive protrusions 17 can be contemplated, for example more strip-shaped with more or less linear or curved or multi linear angled guide surfaces 18.
  • Fig. 7c shows the lower side of a cutting head 5 with eight drive protrusions 17 being strip-shaped or band-shaped and extending linearly along radiuses of the cutting head 5.
  • All eight drive protrusions 17 are active in either rotational direction of the cutting head and consequently exhibit linear guide surfaces 18 on either side.
  • the drive protrusions are dimensioned to protrude from the cutting head in order to fulfil the function to displace muck (or disintegrated rock) so as to force the muck being below the cutting head radially outwards from the rotation axis of the cutting head towards its periphery at the same time as they force the muck towards the center of the machine front .
  • the drive protrusions have to have a suitable extension in the axial (rotation axis) direction of the cutting head.
  • That extension is calculated based on firstly the
  • the dimensions also depend on character of rock or ore to displace, dimensions of the cutting head, cutters on the cutting head and expected size of particles and lumps of rock.
  • a suitable axial extension from a side of the cutting wheel is about 10 - 80 mm. More preferred, the axial extension is from 25 to 65 mm and most preferred, the axial extension is from 35 to 55 mm.
  • the inventive mobile miner is subjected to great forces and torques required for its operation. This requires a driving arrangement and bearing support of the cutting head being sufficiently ridged and strong and yet small to maintain flexibility for allowing fast and effective rock working.
  • the rotational speed of the cutting head is relatively low, from about 10 revolutions per minute up to about 20 or 30 revolutions per minute. Given a certain effect this requires the torque to be great.
  • bearing support of the cutting head provides rigid and strong bearing support at a considerable distance from the rotation axis and preferably a direct drive hydraulic motor being very powerful with or without central reduction gear.
  • the strong and rigid bearing support is essential since the support boom is one-sided meaning that the rotating cutting head is supported from one side only.
  • the rotator is preferably a direct drive hydraulic motor of radial piston type wherein the rotational speed of the rotator is the same as that of the cutting head.
  • a spherical radial roller bearing is used together with two axial bearings.
  • Another embodiment can include a spherical roller bearing etc.
  • the one-sided support boom has the
  • Fig. 8 illustrates this aspect of the invention, wherein a very large support bearing 19 is provided which is supported by a hollow, pipe-shaped bearing support member 20 which on a first end provides a large annular attachment surface 21 to the one-sided boom 13 (in this case constructed otherwise than what is shown in the previously discussed Figs) .
  • This makes it easy, with reasonable dimensions and thickness of material of the bearing support member as well as of the inside of the cutting head 5, to transmit forces from rock contact to the boom 13 and vice versa.
  • the rotator 32 is fixed inside the hollow axis and preferably for example co-operates with an inside flange 33 of the bearing support member 20 so as to have the motor drive shaft 34 being directly connected to the radially extending lower side 35 of the cutting head 5, allowing the cutting head 5 to be closed and slim with said lower side 35 being the bottom of a "can-shape".
  • the support bearing 19 of the cutting head 5 is
  • Two of the plurality of drive protrusions having guide surfaces arranged to drive disintegrated rock material radially outwards in directions radially out from the rotation axis of the cutting head are exemplified at 17. These drive protrusions are advantageous to prevent muck from being accumulated below the cutting head and thereby obstructing downward movements and thus proper operation of the mining machine which requires positioning of the cutting head close to rock to be worked.
  • Fig. 9 shows diagrammatically an inventive method sequence.
  • Position 25 indicates the start of the sequence.
  • Position 26 indicates positioning and rotating a cutting head for drifting purposes.
  • Position 27 indicates forcing the cutting head linearly against rock to be worked.
  • Position 28 indicates rotating the cutting head in a first rotational direction during a cut where the cutting head is in a first side position.
  • Position 29 indicates driving disintegrated rock material below the cutting head radially outwards, when rotating the cutting head, with the aid of a plurality of drive
  • Position 30 indicates end of the sequence.
  • the cutting head can be equipped with stud-like, picklike or peg-like rock disintegrating elements that are rigidly positioned on the periphery of the cutting head.

Landscapes

  • 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)
  • Environmental & Geological Engineering (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

L'invention concerne une machine d'extraction (1) permettant le creusement de tunnels, ladite machine d'extraction (1) comprenant : une tête de coupe (5) ayant des éléments de coupe de roche coopérant (5´), un rotateur (32) pour entraîner ladite tête de coupe (5), un moyen pour pousser la tête de coupe contre la roche à travailler de manière à désintégrer la roche, et des moyens (7, 7´) pour évacuer la matière séparée. La tête de coupe, sur un côté supérieur, est fixée à une unité de support à une face. La machine d'extraction comprend une unité de pressage disposée pour presser la tête de coupe (5) linéairement contre la roche à travailler, et le rotateur (32) est agencé pour faire tourner la tête de coupe (5) dans une première direction de rotation pendant une coupe où la tête de coupe se trouve dans une première position latérale et dans un second sens de rotation dans une entaille où la tête de coupe se trouve dans une seconde position latérale. L'invention concerne également un procédé associé.
EP17741735.9A 2016-01-22 2017-01-17 Machine d'extraction et procédé pour faire fonctionner une machine d'extraction Active EP3405648B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1650078A SE1650078A1 (en) 2016-01-22 2016-01-22 Mining machine and method for operating a mining machine
PCT/SE2017/050037 WO2017127009A1 (fr) 2016-01-22 2017-01-17 Machine d'extraction et procédé pour faire fonctionner une machine d'extraction

Publications (3)

Publication Number Publication Date
EP3405648A1 true EP3405648A1 (fr) 2018-11-28
EP3405648A4 EP3405648A4 (fr) 2019-10-30
EP3405648B1 EP3405648B1 (fr) 2020-12-23

Family

ID=59362773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17741735.9A Active EP3405648B1 (fr) 2016-01-22 2017-01-17 Machine d'extraction et procédé pour faire fonctionner une machine d'extraction

Country Status (4)

Country Link
EP (1) EP3405648B1 (fr)
SE (1) SE1650078A1 (fr)
WO (1) WO2017127009A1 (fr)
ZA (1) ZA201803755B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE543577C2 (en) * 2019-08-26 2021-04-06 Epiroc Rock Drills Ab A mining machine and a method for rock excavations, as well as a method for conveying hydraulic fluid using the mining machine
CN114135309A (zh) * 2021-11-23 2022-03-04 中铁工程装备集团有限公司 矩形断面开挖刀盘及掘进机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548442A (en) * 1983-12-06 1985-10-22 The Robbins Company Mobile mining machine and method
WO2009100469A1 (fr) * 2008-02-15 2009-08-20 Sandvik Mining And Construction G.M.B.H. Machine de creusement pourvue d'une tête de forage composée d'outils à disques
AT506501B1 (de) * 2008-02-15 2011-04-15 Sandvik Mining & Constr Oy Strecken-vortriebsmaschine
AT510657B1 (de) * 2010-11-05 2013-04-15 Sandvik Mining & Constr Oy Streckenvortriebsmaschine
SE537425C2 (sv) * 2011-09-27 2015-04-28 Atlas Copco Rock Drills Ab Anordning och förfarande för drivning av tunnlar, orter eller liknande

Also Published As

Publication number Publication date
ZA201803755B (en) 2019-09-25
EP3405648B1 (fr) 2020-12-23
EP3405648A4 (fr) 2019-10-30
SE1650078A1 (en) 2017-07-23
WO2017127009A1 (fr) 2017-07-27

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