EP0380469A2 - Support d'outils pour les outils de coupe de machines de havage ou d'avancement - Google Patents

Support d'outils pour les outils de coupe de machines de havage ou d'avancement Download PDF

Info

Publication number
EP0380469A2
EP0380469A2 EP90890014A EP90890014A EP0380469A2 EP 0380469 A2 EP0380469 A2 EP 0380469A2 EP 90890014 A EP90890014 A EP 90890014A EP 90890014 A EP90890014 A EP 90890014A EP 0380469 A2 EP0380469 A2 EP 0380469A2
Authority
EP
European Patent Office
Prior art keywords
tools
tool
tool carrier
tool holder
carrier 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
EP90890014A
Other languages
German (de)
English (en)
Other versions
EP0380469B1 (fr
EP0380469A3 (fr
Inventor
Volker Dipl.-Ing. Hentschel
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.)
Sandvik Mining and Construction GmbH
Original Assignee
Voest Alpine Bergtechnik GmbH
Voest Alpine Zeltweg 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 Voest Alpine Bergtechnik GmbH, Voest Alpine Zeltweg GmbH filed Critical Voest Alpine Bergtechnik GmbH
Publication of EP0380469A2 publication Critical patent/EP0380469A2/fr
Publication of EP0380469A3 publication Critical patent/EP0380469A3/fr
Application granted granted Critical
Publication of EP0380469B1 publication Critical patent/EP0380469B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E21D9/104—Cutting tool fixtures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/10—Roller bits with roller axle supported at both ends
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Definitions

  • the invention relates to a tool carrier for the extraction tools of extraction or tunneling machines, in particular full-cut machines, such as Shield boring machines.
  • Different mining tools are known for tunnel boring machines that work according to the full cutting principle, which are adapted to different geologies and strengths.
  • the geology frequently changes and different tools are usually required to mine different types of rock.
  • the retrofitting effort for adapting the mining tools to the rock is not justifiable in many cases, so that work continues with cutting or breaking tools that are unfavorable for the given rock types. If boring heads or cutting wheels have a plurality of different tools at the same time, the wear on those tools that would be more favorable or more suitable for a particular geology is relatively high up to the point in time at which they would actually be needed, since these tools, too, are then constantly used should remain in engagement with the rock.
  • Roller chisels such as those used for such cutting heads or cutting wheels, are particularly effective from a certain hardness or cube compressive strength. Conversely, these roller chisels are subject to relatively high wear in softer rock, since in cohesive or small-grain zones the rollers cannot be unrolled, so that the roller chisel ring cutting edge is subject to local abrasion. This local destruction of the ring cutting edge later prevents a rolling process in hard rock zones, as a result of which the roller chisels have become ineffective.
  • the invention now aims to provide a tool carrier of the type mentioned, with which it is possible to adapt the cutting or drilling heads to different rock qualities quickly and without retrofitting, and with which it may also be possible to find damaged tools in easy to change and maintain a largely tight seal to the face while changing such defective tools.
  • the invention consists essentially in the fact that the tools can be pivoted or rotated about at least one axis in the tool carrier, essentially parallel to the dismantling front and can be locked in the respective pivoting position or are connected to a rotary drive.
  • the tools are pivoted or rotatable about at least one axis in the tool carrier substantially parallel to the mining front and can be locked in the respective pivot position, different tools can be brought into engagement with the rock by pivoting the tools.
  • a tight seal of the tool carrier to the working face can also be maintained in the respective pivoting positions and, in particular, for example when the tools are pivoted about the pivot axis by 180 ° a smooth outer surface facing the working face, which is free of tools.
  • the tools are freely accessible behind the drilling disc on the side facing away from the working face and can be used in a simple manner to be replaced.
  • the design is such that the swivel axes of the tools are arranged radially in the tool carrier, in particular in the form of a drill head or a cutting wheel.
  • the swivel axes of the tools are arranged radially in the tool carrier, in particular in the form of a drill head or a cutting wheel.
  • the design is preferably such that these roller chisels can be disengaged from the face when pivoting about the pivot axis.
  • the holder of such roller chisels which can be pivoted about the pivot axis, can have a flat surface which largely seals off the opening in which the tools are pivotably mounted when the tools are pivoted out of engagement.
  • the panning Such roller chisels out of engagement with the rock lead to considerable protection of such chisels which, as mentioned at the beginning, are only particularly effective with hard rock and would wear out quickly with soft rock.
  • the sealing can, as is the case in a preferred embodiment, be carried out in such a way that sealing elements are arranged between the tool holders and the tool carrier.
  • the design can advantageously be such that a plurality of chisels are arranged in tool holders in circles concentric to the swivel axis, the tool tips lying within an enveloping circle, which is smaller than the envelope circle of the recess in the tool carrier, in which the tool holder can be pivoted.
  • a simple pivoting about the pivot axis is sufficient to bring new tools or different tools into engagement with the working face.
  • a maximum of four tools or chisels are arranged on a common tool holder in the circumferential direction, with the arrangement of four tools in the circumferential direction of the pivot axis leaving a particularly large scope for the angle of attack of such tools relative to the working face.
  • the design is advantageously made such that the area of the pivotable tool holder opposite the tools is designed to have a smaller radius relative to the pivot axis.
  • the opening in the tool holder in which the pivotable tool holder is arranged is of course designed with a clear width which corresponds at least to the envelope curve of the tools arranged on the tool holder concentrically with the pivot axis.
  • the tools can be oriented opposite to each other in the circumferential direction of the envelope, which results in a simple design in which the drill head or the milling disk for tool change as a mechanical protective shield against the working face for the staff can be deployed.
  • the area of the tool holder remaining between the oppositely oriented chisels can completely fill the opening or opening of the tool holder in such a configuration, so that a high mechanical strength and good protection is provided. Even with such a configuration, the angle of attack and the depth of cut can be changed within wide limits, with the opposing orientation of the two cutting tools or chisels providing an adjustment range of almost 180 ° for different orientation of the chisels relative to the working face.
  • the design of the tool carrier is such that a plurality of tool holders with tools is rotatably mounted about a common pivot axis at different radial distances from the axis of rotation of the tool carrier, whereby a large area can be reduced and, if desired, at different radial distances different tools can be used from the axis of rotation of the tool carrier.
  • the tools in the tool holder are connected to a rotary drive for a rotary movement about the pivot axis, in order to take into account the different circumferential speeds due to the tools arranged at different distances from the axis of rotation of the tool carrier, or for targeted cutting or removal effects to enable the design to be advantageously made such that when a plurality of tool holders with tools are arranged at different radial distances from the axis of rotation of the tool carrier, the tool holders each have a separate drive.
  • FIG. 1 shows a top view of a partial view of a drilling head of a boring machine with tool carriers according to the invention
  • FIG. 2 analogously to FIG. 1 shows a partial top view of a cutting wheel of a boring machine with inventions 3, a section along the line III-III of FIGS. 1 and 2, the roller chisel being in engagement with the rock to be mined
  • FIG. 4 an illustration analogous to FIG. 3, the roller chisel facing away from the working face 5 and 6 is a modified form of a tool carrier according to the invention with a cutting tool, the tool in FIG. 5 being in engagement with the working face and in FIG. 6 the cutting tool in turn being out of engagement with the working face
  • FIG. 7 a partial plan view of a cutting wheel similar to Figure 2 with an additional drive of the tool holder.
  • FIG 1 shows a drilling head 1, on which tools 3, which are formed by roller chisels, can be pivoted about the axes 2 on substantially radial axes, which are indicated schematically in FIG stored and can be determined in their respective pivot position, as will be explained in more detail below.
  • a plurality of dismantling tools 3 such as roller chisels, for example, in turn being pivotably mounted about essentially radially extending axes 2 and their respective pivot position being ascertainable.
  • dismantling tools 3 are provided at different radial distances from the center 5 of the drill head 1 or the cutting wheel with the cutting wheel spokes 4.
  • the base body of the drilling head 1 or the cutting wheel spoke 4 of FIGS. 1 and 2 is designated 6 as the tool carrier.
  • This base body 6 has a recess 7, in which a tool holder 8, which carries a roller chisel 3, is pivotally mounted about the axis 2.
  • the roller chisel 3 is rotatably mounted in the tool holder 8 about an axis 9.
  • roller chisel the ring cutting edge 10 of the chisel engages with the face 11, the rolling force acting on the ring cutting edge 10 being designated 12 and the pressing force 13.
  • the tool holder 8 is sealingly guided in the recess 7, so that no cut stone can get into the interior of the drill head or the cutting wheel.
  • the tool holder 8 has, on the side opposite the roller chisel 3, a flattened portion 14 which is dimensioned such that when the tool holder 8 is rotated about the axis 2 by 180 °, the surface 15 of the base body 6 facing the face 15 is flush with the Tool holder 8 results, as shown in Fig.4.
  • the roller chisel points towards the inside of the drill head or the cutting wheel and can thus be removed and replaced in a simple manner after removal of a cover 16, without having to access the drill head or cutting wheel on the side facing the face would.
  • the tool holder 8 seals the inside of the cutting wheel or drill head from the face of the working face by means of sealing strips, indicated schematically by 22, so that there is extensive protection.
  • a removal tool 21 different from the roller chisel 3, for example a cap chisel, can be arranged so that when the tool holder 8 is rotated, different tools 3 or 21 come into engagement with the face 11 in accordance with the requirements .
  • tools 23 can be defined directly on the tool carrier 6, optionally with the interposition of tool holders, which are designed such that they only engage with the working face when the roller chisels 3 are pivoted inwards. When roller chisels 3 are used, the tools 23 are at a distance from the working face due to their small height.
  • the recess 7 in the tool carrier 6, which receives the tool holder 8 with the removal tool, is shaped so that the roller chisel can be rotated, i.e. the annular cutting edge 10 lies within an enveloping circle which is smaller than the enveloping circle of the recess 7 in the tool carrier 6, this enveloping circle being indicated by 17 in FIGS. 3 and 4.
  • the axis of rotation 9 of the roller chisel 3 in the tool holder 8 is offset with respect to the pivot axis 2 in the tool carrier.
  • a plurality of tool holders 8, each of which carries a roller chisel 3, can be coupled to one another and pivoted about a pivot axis 2 by a common rotary drive, so that all or a group of tools 3 pivotably fixed about a radial pivot axis 2 can be pivoted together .
  • the tool carrier is again designated 6 and in turn has a recess 7 for receiving a tool holder 18 which is pivotable about the pivot axis 2.
  • Two cutting tools 19 are fixed on this tool holder 18, one of these tools being in engagement with the face 11.
  • the cutting direction in the illustration according to FIG. 5 is indicated by the arrow 20.
  • the tool holder according to FIG. 5 is designed in such a way that a passage cross section for cut or broken material remains in the recess 7 of the base body 6 when one of the cutting tools 19 with the working face 11 in Intervention stands so that through the free cross cut this material to the inside of the drill head or the cutting wheel can be discharged. It is immediately apparent from FIG.
  • the tool holder according to FIG. 5 is shown in the resting position, so that none of the cutting tools 19 is in engagement with the face 11.
  • the tools 19 are arranged offset from one another at an angle of less than 180 °, this angle, however, being dimensioned sufficiently large to result in a complete closure of the recess 7 in the tool carrier in the position shown in FIG. 6 and thus a closed shield to support the working face or to secure the mining area. In this case, too, the tools in the protection of this plate are easily accessible for checking or changing.
  • an inactive tool 19 is in each case protected for other directions of rotation and is therefore not subject to wear and does not increase the cutting resistances.
  • the material drain opening which is limited by the remaining passage cross section in the recess 7, is always in front of a cutting tool 19 in the cutting direction, so that the material can be transported directly from the cutting plane behind the support plane.
  • the size of the material flow opening can be adjusted continuously within certain limits with a parallel gap width and can thus be used to control the material flow. Through this is a support Pressure control in the cutting plane is conceivable without the entire excavation space having to be filled.
  • the arrangement of different tools on a common tool holder 8 can be provided, so that different tools, which are particularly favorable for the dismantling of different geological compositions, are pivoted in each case in a simpler manner by pivoting the respective tool holder Can be brought into engagement with the working face without retrofitting the entire drill head or the cutting wheel.
  • FIG. 7 again shows a drill head 1, with tool holders 24 with a plurality of tools 25 being mounted in the tool holder 6 formed by the drill head 1 so as to be rotatable about an axis 2.
  • a drive 27 is provided for moving the tool holder 24 according to the arrow 28 about the axis 2.
  • a number of tools are in turn stored at different radial distances from the axis 5, which are in engagement with the material to be mined along concentric circles when the drilling head 1 rotates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP19900890014 1989-01-23 1990-01-23 Support d'outils pour les outils de coupe de machines de havage ou d'avancement Expired - Lifetime EP0380469B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT121/89 1989-01-23
AT12189A AT400350B (de) 1989-01-23 1989-01-23 Werkzeugträger für die abbauwerkzeuge von gewinnungs- oder vortriebsmaschinen

Publications (3)

Publication Number Publication Date
EP0380469A2 true EP0380469A2 (fr) 1990-08-01
EP0380469A3 EP0380469A3 (fr) 1992-06-10
EP0380469B1 EP0380469B1 (fr) 1995-12-27

Family

ID=3482064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900890014 Expired - Lifetime EP0380469B1 (fr) 1989-01-23 1990-01-23 Support d'outils pour les outils de coupe de machines de havage ou d'avancement

Country Status (3)

Country Link
EP (1) EP0380469B1 (fr)
AT (1) AT400350B (fr)
DE (1) DE59009990D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017008622A (ja) * 2015-06-24 2017-01-12 川崎重工業株式会社 センターカッター装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232670A (en) * 1964-08-07 1966-02-01 Robbins & Assoc James S Tunnel-boring rotary head with adjustably mounted gauge cutters
FR2225579A1 (fr) * 1973-04-16 1974-11-08 Macalpine Et Sons Ltd Robert
FR2339736A1 (fr) * 1976-02-02 1977-08-26 Grandori Carlo Perfectionnements a des machines rotatives de forage de tunnel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309142A (en) * 1963-05-31 1967-03-14 Robbins & Assoc James S Cutterhead assembly for a shield-type tunneling machine
US3647263A (en) * 1970-03-19 1972-03-07 Atlas Copco Ab Tunnelling machines and the like
ZA842236B (en) * 1983-05-10 1984-11-28 Atlas Copco Ab Machine for boring non-circular tunnels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232670A (en) * 1964-08-07 1966-02-01 Robbins & Assoc James S Tunnel-boring rotary head with adjustably mounted gauge cutters
FR2225579A1 (fr) * 1973-04-16 1974-11-08 Macalpine Et Sons Ltd Robert
FR2339736A1 (fr) * 1976-02-02 1977-08-26 Grandori Carlo Perfectionnements a des machines rotatives de forage de tunnel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017008622A (ja) * 2015-06-24 2017-01-12 川崎重工業株式会社 センターカッター装置

Also Published As

Publication number Publication date
EP0380469B1 (fr) 1995-12-27
ATA12189A (de) 1995-04-15
AT400350B (de) 1995-12-27
DE59009990D1 (de) 1996-02-08
EP0380469A3 (fr) 1992-06-10

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