EP0026439A2 - Cutter for a partial-cut driving machine - Google Patents

Cutter for a partial-cut driving machine Download PDF

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Publication number
EP0026439A2
EP0026439A2 EP80105723A EP80105723A EP0026439A2 EP 0026439 A2 EP0026439 A2 EP 0026439A2 EP 80105723 A EP80105723 A EP 80105723A EP 80105723 A EP80105723 A EP 80105723A EP 0026439 A2 EP0026439 A2 EP 0026439A2
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EP
European Patent Office
Prior art keywords
roller
cutting machine
partial
partial cutting
cutting head
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
EP80105723A
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German (de)
French (fr)
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EP0026439A3 (en
Inventor
Bernhard Dipl.-Ing. Schmid
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Saarbergwerke AG
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Saarbergwerke AG
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Publication date
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Publication of EP0026439A2 publication Critical patent/EP0026439A2/en
Publication of EP0026439A3 publication Critical patent/EP0026439A3/en
Ceased legal-status Critical Current

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    • 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
    • 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
    • E21D9/1033—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a transversely extending boom being pivotable about a longitudinal axis

Definitions

  • the invention relates to a partial cutting machine with a longitudinal cutting head for driving sections of any cross section.
  • Partial cutting machines are known for tunneling in hard coal mining, the cutting head of which is arranged at the end of a boom connected to the partial cutting machine, so that the entire surface of the working face can be coated.
  • the cutting heads of these known partial cutting machines are equipped with round chisels or pin chisels. These chisels only have an insufficient service life and unsatisfactory cutting performance in solid, abrasive bedrock. In contrast, roller chisels, such as those used in full-cut machines, have significantly longer service lives and cutting performance, but also require correspondingly higher contact forces.
  • the known partial cutting machines have a comparatively large overall length of over 10 meters, for which no suitable on-site expansion is available. It is therefore not possible to bring the final removal behind the machine continuously. Instead, the removal is attached to the face immediately after the cutting work, which in each case necessitates an interruption in the work of the partial cutting machine. This results in insufficient utilization of the part-cutting machine and thus an unsatisfactory opening result.
  • the object of the present invention is the development of a partial cutting machine which enables high advance rates and allows the removal to be carried out without interrupting the line advance.
  • the cutting head consists of an outer and an inner roller, the inner roller being arranged concentrically with the outer roller and being axially displaceable therein, and both the outer roller on its outer surface and the inner roller being equipped with chisels on the front and circumferential sides are, and that the cutting head is both radially displaceable and rotatable about an axis lying parallel to the cutting head axis with the partial cutting machine.
  • the partial cutting machine equipped according to the invention enables high advance rates even with firm, abrasive rock in almost continuous operation.
  • a pilot bore is first made with the inner roller of the rotating cutting head, preferably in soft rock or in coal, the diameter of which is at least corresponds to the diameter of the outer roller. This is done by extending the inner roller and moving the cutting head in the radial direction while simultaneously rotating about an axis lying parallel to the cutting head axis. Since both axial and vertical cutting forces act on the inner roller when the pilot bore is created, it has proven to be useful to equip it with conventional shank chisels. However, the abrasion of these chisels is limited because, as already mentioned, the pilot hole can be drilled in soft rock or in coal.
  • the inner roller is retracted and at the same time the tunneling machine is advanced by the depth of the bore.
  • the extension of the pilot bore in the circumferential direction to the desired cross-section of the working face now takes place exclusively via the outer roller of the cutting head, the cutting head now also being extended with simultaneous rotation in the radial direction. Since only vertical cutting forces act on the outer roller, it can be equipped with the more effective and less wear-resistant roller chisels.
  • the power transmission poses no difficulties, since no unfavorable leverage arms are used. Rather, the required contact forces can be transmitted directly via corresponding hydraulic cylinders, which at the same time cause the cutting head to be displaced in the radial direction.
  • connection between the cutting head and the partial cutting machine consists of a support arm, a profile rail and a carrier disc, the carrier disc being rotatable with the component cutting machine, the profile rail being rigid with the carrier disc, the carrier arm being radially displaceable with the profile rail and the cutting head is rigidly connected to the support arm.
  • the partial cutting machine is clamped in the already opened section by hydraulic cylinders to absorb the reaction forces. Since the partial cutting machine according to the invention is very short, this tension and the now very small lever lengths mean that the high contact forces required for the use of roller chisels can be easily applied.
  • the part-cutting machine is advanced in a manner known per se by means of hydraulic cylinders which are supported on an additional team and advance the machine body. By pushing these cylinders in the opposite direction, the additional team is pulled in turn.
  • the figures show a partial cutting machine 1 with a cutting head 2 connected to it in a force-locking manner.
  • the cutting head 2 consists of an outer roller 3 equipped with roller chisels 5 and an inner roller 4 which is arranged concentrically with the outer roller and is axially displaceable and which is equipped with end chisels 9 on the face and circumference.
  • the axes of rotation 6 of the roller chisels 5 lie parallel to the roller axis 7. Only the axes of the outer roller chisels 5a are slightly inclined in the direction of the face 8 in order to prevent the outer roller 3 from contacting the face 8.
  • the axial displacement of the inner roller 3 is advantageously carried out via hydraulic units, not shown here.
  • the non-positive connection between the cutting head 2 and the partial cutting machine 1 is made via a support arm 10, a profile rail 11 and a carrier disc 13, the carrier disc 13 being rotatable with the component cutting machine 1, the profile rail 11 rigid with the carrier disc 13, the carrier arm 10 is radially displaceable with the profile rail 11 and the support arm 10 is rigidly connected to the cutting head 2.
  • the radial displacement of the support arm 10 and thus also of the cutting head 2 takes place by means of hydraulic cylinders 12, while the carrier disk 13 is generally driven by one or more hydraulic motors, not shown here.
  • the cutting head 2 is also driven hydraulically, the hydraulic fluid being supplied to the hydraulic motor located in the support arm 10 via a rotary transducer.
  • the cutting head 2 is centered again and after the inner roller 4 has been retracted, the partial cutting machine 1 is moved up a second time until the outer roller 3 engages the full length of the prepared pilot hole. Now, with the inner roller 4 retracted, the entire cross section can be covered, only the outer roller 3 being in engagement with the rock. Since the chisel bits 9 do not have a long service life in hard, abrasive rock, the pilot hole is, as far as possible, made in rock horizons that can be cut easily, for example in coal.
  • the partial cutting machine 1 is braced in the course circumference via hydraulic cylinders 15, 18.
  • Support plates 16, 17 in the ridge area of the section are advantageously designed as a protective roof for securing the section ridges and the upper section joints.
  • the route extension itself can then be introduced in accordance with the advance of the partial cutting machine 1 without interrupting the tunneling work.
  • the cylinders 15 are relieved, while the cylinders 18 remain loaded on an additional team 20.
  • the partial cutting machine 1 is advanced by extending cylinders 19 which act between the partial cutting machine 1 and the combination 20. After tensioning the cylinders 15 and relieving the pressure on the cylinders 18, the cylinders 19 are acted upon in the opposite direction, the trailer 20 is tightened and then the cylinders 18 are tensioned again.

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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)
  • Environmental & Geological Engineering (AREA)
  • Road Repair (AREA)
  • Turning (AREA)
  • Earth Drilling (AREA)

Abstract

To increase the cutting capacity of a partial-cut driving machine, the cutting head (2) is divided into an outer roller (3) and a longitudinally displaceable inner roller (4) concentrically guided in this outer roller (3). At the end face and at the periphery, the inner roller (4) is fitted with shank bits (9) and serves to produce a pilot bore which is widened to the diameter of the outer roller (3). The inner roller (4) is then retracted into the outer roller (3) and the roadway cross-section is now cut exclusively with the outer roller (3). Since the outer roller (3) cuts only at its periphery, it can be fitted with roller bits (5). Compared with shank bits (9), roller bits (5) permit substantially higher cutting capacities and have a significantly longer service life. <IMAGE>

Description

Die Erfindung betrifft eine Teilschnittmaschine mit Längsschneidkopf zum Auffahren von Strecken beliebigen Querschnittes.The invention relates to a partial cutting machine with a longitudinal cutting head for driving sections of any cross section.

Für den Streckenvortrieb im Steinkohlenbergbau sind Teilschnittmaschinen bekannt, deren Schneidkopf am Ende eines mit der Teilschnittmaschine verbundenen Auslegers angeordnet ist, so daß die gesamte Fläche der Ortsbrust bestrichen werden kann.Partial cutting machines are known for tunneling in hard coal mining, the cutting head of which is arranged at the end of a boom connected to the partial cutting machine, so that the entire surface of the working face can be coated.

Die Schneidköpfe dieser bekannten Teilschnittmaschinen sind mit Rundschaf tmeiß eln oder Stiftmeißeln besetzt. Diese Meißel haben in festem, abrasivem Nebengestein nur eine ungenügende Standzeit und unbefriedigende Schneidleistungen. Demgegenüber haben Rollenmeißel, wie sie bei Vollschnittmaschinen eingesetzt werden, wesentlich höhere Standzeiten und Schneidleistungen, erfordern jedoch auch entsprechend höhere Anpresskräfte .The cutting heads of these known partial cutting machines are equipped with round chisels or pin chisels. These chisels only have an insufficient service life and unsatisfactory cutting performance in solid, abrasive bedrock. In contrast, roller chisels, such as those used in full-cut machines, have significantly longer service lives and cutting performance, but also require correspondingly higher contact forces.

Der Einsatz von Rollenmeißeln ist bei den bekannten Teilschnittmaschinen nicht möglich:

  • - Aufgrund der für die Bestreichung des gesamten Streckenquerschnittes erforderlichen großen Auslegerlänge und der konstruktiv bedingten Anordnung der Hub- und Schwenkzylinder im hinteren Auslegerbereich können infolge der ungünstigen Hebelverhältnisse nur vergleichsweise geringe Anpresskräfte auf den Schneidkopf aufgebracht werden.
  • - Rollenmeißel dürfen nur radial in der Scheibenebene, nicht aber senkrecht zur Scheibenebene belastet werden. Daher eignen sich die Schneidköpfe der bekannten Teilschnittmaschinen nicht für den Einsatz von Rollenmeißeln, da
  • - insbesondere beim Einschneiden in die Ortsbrust - sowohl axial als auch radiale Schneidkräfte aufgebracht werden müssen.
The use of roller chisels is not possible with the known partial cutting machines:
  • - Due to the large boom length required to cover the entire cross-section of the boom and the design-related arrangement of the lifting and swiveling cylinders in the rear boom area, only comparatively low contact forces can be applied to the cutting head due to the unfavorable leverage conditions.
  • - Roller chisels may only be loaded radially in the disc plane, but not perpendicular to the disc plane. Therefore, the cutting heads of the known partial cutting machines are not suitable for the use of roller chisels because
  • - In particular when cutting into the working face - both axial and radial cutting forces must be applied.

Die bekannten Teilschnittmaschinen haben eine vergleichsweise große Baulänge von über 10 Metern, für die kein geeigneter Vorortausbau verfügbar ist. Daher ist das kontinuierliche Einbringen des endgültigen Ausbaus hinter der Maschine nicht möglich. Statt dessen wird der Ausbau nach Beendigung der Schneidarbeit unmittelbar an der Ortsbrust angebracht, was jeweils eine Arbeitsunterbrechung der Teilschnittmaschine bedingt. Hieraus ergeben sich eine ungenügende Auslastung der Teilschnittmaschine und somit ein unbefriedigendes Auffahrergebnis.The known partial cutting machines have a comparatively large overall length of over 10 meters, for which no suitable on-site expansion is available. It is therefore not possible to bring the final removal behind the machine continuously. Instead, the removal is attached to the face immediately after the cutting work, which in each case necessitates an interruption in the work of the partial cutting machine. This results in insufficient utilization of the part-cutting machine and thus an unsatisfactory opening result.

Aufgabe der vorliegenden Erfindung ist die Entwicklung einer Teilschnittmaschine, die hohe Vortriebsleistungen ermöglicht und das Einbringen des Ausbaues ohne Unterbrechung des Streckenvortriebes erlaubt.The object of the present invention is the development of a partial cutting machine which enables high advance rates and allows the removal to be carried out without interrupting the line advance.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schneidkopf aus einer Außen- und einer Innenwalze besteht, wobei die Innenwalze konzentrisch zur Außenwalze angeordnet und in dieser axial verschiebbar ist und sowohl die Außenwalze auf ihrer Mantelfläche als auch die Innenwalze stirn- und umfangseitig mit Meißeln bestückt sind, und daß der Schneidkopf sowohl radial verschiebbar als auch um eine parallel zur Schneidkopfachse liegende Achse drehbar mit der Teilschnittmaschine verbunden ist.This object is achieved in that the cutting head consists of an outer and an inner roller, the inner roller being arranged concentrically with the outer roller and being axially displaceable therein, and both the outer roller on its outer surface and the inner roller being equipped with chisels on the front and circumferential sides are, and that the cutting head is both radially displaceable and rotatable about an axis lying parallel to the cutting head axis with the partial cutting machine.

Die erfindungsgemäß ausgestattete Teilschnittmaschine ermöglicht auch bei festem, abrasivem Gestein im nahezu kontimuierlichen Betrieb hohe Vortriebsleistungen.The partial cutting machine equipped according to the invention enables high advance rates even with firm, abrasive rock in almost continuous operation.

Im Einsatz wird zunächst mit der Innenwalze des rotierenden Schneidkopfes, vorzugsweise im weichen Gestein oder in der Kohle eine Pilotbohrung erstellt, deren Durchmesser mindestens dem Durchmesser der Außenwalze entspricht. Dies erfolgt durch Ausfahren der Innenwalze und Verschieben des Schneidkopfes in radialer Richtung bei gleichzeitiger Drehung um eine parallel zur Schneidkopfachse liegende Achse. Da bei Erstellung der Pilotbohrung sowohl achsiale als auch vertikale Schnittkräfte auf die Innenwalze wirken, erweist es sich als zweckmäßig, diese mit herkömmlichen SchaftmeiSeln zu bestücken. Dabei hält sich der Abrieb dieser Meißel jedoch in Grenzen, da wie bereits erwähnt, die Pilotbohrung im weichen Gestein oder in der Kohle niedergebracht werden kann.In use, a pilot bore is first made with the inner roller of the rotating cutting head, preferably in soft rock or in coal, the diameter of which is at least corresponds to the diameter of the outer roller. This is done by extending the inner roller and moving the cutting head in the radial direction while simultaneously rotating about an axis lying parallel to the cutting head axis. Since both axial and vertical cutting forces act on the inner roller when the pilot bore is created, it has proven to be useful to equip it with conventional shank chisels. However, the abrasion of these chisels is limited because, as already mentioned, the pilot hole can be drilled in soft rock or in coal.

Nach Erstellung der Pilotbohrung wird die Innenwalze eingefahren und gleichzeitig die Vortriebsmaschine um die Tiefe der Bohrung vorgerückt. Die Erweiterung der Pilotbohrung in Umfangsrichtung auf den gewünschten Querschnitt der Ortsbrust erfolgt nunmehr ausschließlich über die Außenwalze des Schneidkopfes, wobei auch jetzt der Schneidkopf bei gleichzeitiger Drehung in radialer Richtung ausgefahren wird. Da nunmehr ausschließlich vertikale Schnittkräfte auf die Außenwalze wirken, kann diese mit den wirkungsvolleren und verschleißärmeren Rollenmeißeln bestückt werden. Dabei bereitet die Kraftübertragung keine Schwierigkeiten, da keine ungünstige Hebelverhältnisse bewirkende Ausleger zum Einsatz kommen. Vielmehr können die erforderlichen Anpresskräfte direkt über entsprechende Hydraulikzylinder übertragen werden, welche gleichzeitig die Verschiebung des Schneidkopfes in radialer Richtung bewirken. Gemäß einem weiteren Merkmal der Erfindung besteht die Verbindung zwischen dem Schneidkopf und der Teilschnittmaschine aus einem Tragarm, einer Profilschiene sowie einer Trägerscheibe, wobei die Trägerscheibe drehbar mit der Teilschnittmaschine, die Profilschiene starr mit der Trägerscheibe, der Tragarm radial verschiebbar mit der Profilschiene und der Schneidkopf starr mit dem Tragarm verbunden ist.After the pilot bore has been created, the inner roller is retracted and at the same time the tunneling machine is advanced by the depth of the bore. The extension of the pilot bore in the circumferential direction to the desired cross-section of the working face now takes place exclusively via the outer roller of the cutting head, the cutting head now also being extended with simultaneous rotation in the radial direction. Since only vertical cutting forces act on the outer roller, it can be equipped with the more effective and less wear-resistant roller chisels. The power transmission poses no difficulties, since no unfavorable leverage arms are used. Rather, the required contact forces can be transmitted directly via corresponding hydraulic cylinders, which at the same time cause the cutting head to be displaced in the radial direction. According to a further feature of the invention, the connection between the cutting head and the partial cutting machine consists of a support arm, a profile rail and a carrier disc, the carrier disc being rotatable with the component cutting machine, the profile rail being rigid with the carrier disc, the carrier arm being radially displaceable with the profile rail and the cutting head is rigidly connected to the support arm.

Die Teilschnittmaschine wird zur Aufnahme der Reaktionskräfte mittels Hydraulikzylinder in der bereits aufgefahrenen Strecke verspannt. Da die erfindungsgemäße Teilschnittmaschine sehr kurz ist, können durch diese Verspannung und die nunmehr sehr kleinen Hebellängen die für den Einsatz von Rollenmeißel erforderlichen hohen Anpresskräfte ohne weiteres aufgebracht werden. Das Vorrücken der Teilschnittmaschine erfolgt in an sich bekannter Weise mittels Hydraulikzylinder, die sich an einem zusätzlichen Gespann abstützen und den Maschinenkörper vorrücken. Durch entgegengesetztes Beaufschlagen dieser Zylinder wird das Zusatzgespann seinerseits nachgezogen.The partial cutting machine is clamped in the already opened section by hydraulic cylinders to absorb the reaction forces. Since the partial cutting machine according to the invention is very short, this tension and the now very small lever lengths mean that the high contact forces required for the use of roller chisels can be easily applied. The part-cutting machine is advanced in a manner known per se by means of hydraulic cylinders which are supported on an additional team and advance the machine body. By pushing these cylinders in the opposite direction, the additional team is pulled in turn.

Es ist besonders vorteilhaft, die hangendseitige Verspanneinrichtung mit einem Ausbauschild auszurüsten, so daß der darunter liegende Arbeitsraum geschützt ist. Der endgültige Streckenausbau kann dann ohne Unterbrechung des Streckenvortriebes entsprechend dem Vorrücken der Teilschnittmaschine unmittelbar hinter dieser eingebracht werden.It is particularly advantageous to equip the bracing device on the slope side with a removal plate so that the work space underneath is protected. The final route expansion can then be carried out immediately after the partial cutting machine has been stopped, without interrupting the line driving.

Anhand eines in den Figuren 1 bis 3 schematisch dargestellten Ausführungsbeispieles wird die erfindungsgemäße Teilschnittmaschine im Folgenden näher erläutert.The part-cutting machine according to the invention is explained in more detail below on the basis of an exemplary embodiment shown schematically in FIGS. 1 to 3.

Die Figuren zeigen eine Teilschnittmaschine 1 mit einem kraftschlüssig mit dieser verbundenen Schneidkopf 2. Der Schneidkopf 2 besteht aus einer mit Rollenmeißeln 5 bestückten Außenwalze 3 sowie einer zur Außenwalze konzentrisch angeordneten und axial verschiebbaren Innenwalze 4, welche stirn- und umfangseitig mit Schaftmeißeln 9 bestückt ist. Die Drehachsen 6 der Rollenmeißel 5 liegen parallel zur Walzenachse 7. Lediglich die Achsen der äußeren Rollenmeißel 5a sind leicht geneigt in Richtung Ortsbrust 8, um zu verhindern, daß die Außenwalze 3 an der Ortsbrust 8 anläuft.The figures show a partial cutting machine 1 with a cutting head 2 connected to it in a force-locking manner. The cutting head 2 consists of an outer roller 3 equipped with roller chisels 5 and an inner roller 4 which is arranged concentrically with the outer roller and is axially displaceable and which is equipped with end chisels 9 on the face and circumference. The axes of rotation 6 of the roller chisels 5 lie parallel to the roller axis 7. Only the axes of the outer roller chisels 5a are slightly inclined in the direction of the face 8 in order to prevent the outer roller 3 from contacting the face 8.

Die Axialverschiebung der Innenwalze 3 erfolgt mit Vorteil über hier nicht dargestellte Hydraulikaggregate.The axial displacement of the inner roller 3 is advantageously carried out via hydraulic units, not shown here.

Im vorliegenden Beispiel ist die kraftschlüssige Verbindung zwischen dem Schneidkopf 2 und der Teilschnittmaschine 1 über einen Tragarm 10, eine Profilschiene 11 sowie eine Trägerscheibe 13 hergestellt, wobei die Trägerscheibe 13 drehbar mit der Teilschnittmaschine 1, die Profilschiene 11 starr mit der Trägerscheibe 13, der Tragarm 10 radial verschiebbar mit der Profilschiene 11 und der Tragarm 10 starr mit dem Schneidkopf 2 verbunden ist. Dabei erfolgt die Radialverschiebung des Tragarms 10 und somit auch des Schneidkopfes 2 mittels Hydraulikzylinder 12, während die Trägerscheibe 13 in der Regel von einem oder mehreren hier nicht dargestellten Hydraulikmotoren angetrieben wird.In the present example, the non-positive connection between the cutting head 2 and the partial cutting machine 1 is made via a support arm 10, a profile rail 11 and a carrier disc 13, the carrier disc 13 being rotatable with the component cutting machine 1, the profile rail 11 rigid with the carrier disc 13, the carrier arm 10 is radially displaceable with the profile rail 11 and the support arm 10 is rigidly connected to the cutting head 2. The radial displacement of the support arm 10 and thus also of the cutting head 2 takes place by means of hydraulic cylinders 12, while the carrier disk 13 is generally driven by one or more hydraulic motors, not shown here.

Der Antrieb des Schneidkopfes 2 erfolgt ebenfalls hydraulisch, wobei die Hydraulikflüssigkeit über einen Drehübertrager dem in dem Tragarm 10 liegenden Hydraulikmotor zugeführt wird.The cutting head 2 is also driven hydraulically, the hydraulic fluid being supplied to the hydraulic motor located in the support arm 10 via a rotary transducer.

Die Teilschnittmaschine arbeitet wie folgt:

  • Zu Beginn des Schneidvorganges wird bei rotierendem Schneidkopf 2 die Innenwalze 4 zunächst aus der Außenwalze 3 ausgefahren. Sie bohrt sich bis zur Tiefe B in die Ortsbrust 8 ein. Danach wird bei weiterhin rotierendem Schneidkopf 2 durch Drehung der Trägerscheibe 13 und radiales Verschieben des Schneidkopfes 2 die Bohrung auf einen Durchmesser erweitert, der etwas größer als der Durchmesser der Außenwalze 3 einschließlich der Rollenmeißel 5 ist. Anschließend wird der Schneidkopf 2 wieder zentriert und bei gleichzeitigem Einfahren der Innenwalze 4 die Teilschnittmaschine 1 um die Länge B nachgerückt. Danach wird der Vorgang wiederholt und hierdurch die Tiefe des Pilotloches auf die Länge der Außenwalze 3 vergrößert. Dabei ist es durchaus möglich, daß beim Erweitern des zweiten Lochabschnittes die Außenwalze 3 in einen Teilbereich bereits ebenfalls eingreift (Figur 2).
The partial cutting machine works as follows:
  • At the beginning of the cutting process, with the cutting head 2 rotating, the inner roller 4 is first moved out of the outer roller 3. It bores into the face 8 to depth B. Thereafter, with the cutting head 2 still rotating, the bore is expanded to a diameter which is slightly larger than the diameter of the outer roller 3, including the roller chisel 5, by rotating the carrier disk 13 and radially displacing the cutting head 2. Then the cutting head 2 is centered again and the partial cutting machine 1 is advanced by the length B while the inner roller 4 is retracted at the same time. The process is then repeated and the depth of the pilot hole is thereby increased to the length of the outer roller 3. It is quite possible that when the second hole section is widened, the outer roller 3 already engages in a partial area (FIG. 2).

Der Schneidkopf 2 wird nochmal zentriert und nach Einfahren der Innenwalze 4 die Teilschnittmaschine 1 ein zweites Mal nachgerückt, bis die Außenwalze 3 auf ihrer vollen Länge in die vorbereitete Pilotbohrung eingreift. Nun kann bei eingefahrener Innenwalze 4 der ganze Streckenquerschnitt bestrichen werden, wobei nur die Außenwalze 3 mit dem Gestein in Eingriff ist. Da die Schaftmeißel 9 in hartem, abrasiven Gestein keine hohen Standzeiten haben, wird die Pilotbohrung, soweit möglich, in gut schneidbaren Gesteinshorizonten, beispielsweise in der Kohle, erstellt.The cutting head 2 is centered again and after the inner roller 4 has been retracted, the partial cutting machine 1 is moved up a second time until the outer roller 3 engages the full length of the prepared pilot hole. Now, with the inner roller 4 retracted, the entire cross section can be covered, only the outer roller 3 being in engagement with the rock. Since the chisel bits 9 do not have a long service life in hard, abrasive rock, the pilot hole is, as far as possible, made in rock horizons that can be cut easily, for example in coal.

Die gleichzeitige Drehbarkeit der Trägerscheibe 13 und radiale Verschiebbarkeit des Schneidkopfes 2 auch über den Rand der Trägerscheibe 13 hinaus ermöglichen nunmehr, die gesamte Ortsbrust 8 bei beliebigem Querschnitt zu bestreichen.The simultaneous rotatability of the carrier disk 13 and radial displacement of the cutting head 2 also beyond the edge of the carrier disk 13 now make it possible to coat the entire face 8 with any cross section.

Die Teilschnittmaschine 1 wird während des Schneidens im Streckenumfang über Hydraulikzylinder 15, 18 verspannt. Stützplatten 16, 17 im Firstbereich der Strecke werden vorteilhaft als Schutzdach zur Sicherunh der Streckenfirste und der oberen Streckenstöße ausgebildet. Der Streckenausbau selbst kann dann entsprechend dem Vorrücken der Teilschnittmaschine 1 eingebracht werden, ohne die Vortriebsarbeiten zu unterbrechen.The partial cutting machine 1 is braced in the course circumference via hydraulic cylinders 15, 18. Support plates 16, 17 in the ridge area of the section are advantageously designed as a protective roof for securing the section ridges and the upper section joints. The route extension itself can then be introduced in accordance with the advance of the partial cutting machine 1 without interrupting the tunneling work.

Zum Vorrücken der Teilschnittmaschine 1 werden die Zylinder 15 entlastet, während die Zylinder 18 an einen zusätzlichen Gespann 20 belastet bleiben. Durch Ausfahren von Zylindern 19, die zwischen Teilschnittmaschine 1 und Gespann 20 wirken, wird die Teilschnittmaschine 1 vorgerückt. Nach Verspannen der Zylinder 15 und entlasten der Zylinder 18 werden die Zylinder 19 entgegengesetzt beaufschlagt, das Gespann 20 nachgezogen und anschließend die Zylinder 18 wieder verspannt.To advance the partial cutting machine 1, the cylinders 15 are relieved, while the cylinders 18 remain loaded on an additional team 20. The partial cutting machine 1 is advanced by extending cylinders 19 which act between the partial cutting machine 1 and the combination 20. After tensioning the cylinders 15 and relieving the pressure on the cylinders 18, the cylinders 19 are acted upon in the opposite direction, the trailer 20 is tightened and then the cylinders 18 are tensioned again.

Claims (7)

1. Teilschnittmaschine mit Längsschneidkopf zum Auffahren von Strecken beliebigen Querschnittes, dadurch gekennizeichnet, daß der Schneidkopf (2) aus einer Außen- (3) und einer Innenwalze (4) besteht, wobei die Innenwalze (4) konzentrisch zur Außenwalze (3) angeordnet und in dieser axial verschiebbar ist und sowohl die Aüßenwalze (3) auf ihrer Mantelfläche als auch die Innenwalze (4) stirn- und umfangseitig mit Meißeln bestückt sind, und daß der Schneidkopf (2) sowohl radial verschiebbar als auch um eine parallel zur Schneidkopfachse liegende Achse (14) drehbar mit der Teilschnittmaschine (1) verbunden ist.1. Partial cutting machine with longitudinal cutting head for driving up sections of any cross-section, characterized in that the cutting head (2) consists of an outer (3) and an inner roller (4), the inner roller (4) being arranged concentrically with the outer roller (3) and is axially displaceable in this and both the outer roller (3) on its outer surface and the inner roller (4) are equipped on the front and circumferential sides with chisels, and that the cutting head (2) is both radially displaceable and about an axis parallel to the cutting head axis (14) is rotatably connected to the partial cutting machine (1). 2. Teilschnittmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mantelfläche der Außenwalze (3) mit Rollenmeißeln (5) bestückt ist.2. Partial cutting machine according to claim 1, characterized in that the outer surface of the outer roller (3) is equipped with roller chisels (5). 3. Teilschnittmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Achsen (6) der Rollenmeißel (5) parallel zur Walzenachse (7) liegen.3. Partial cutting machine according to claim 2, characterized in that the axes (6) of the roller chisel (5) are parallel to the roller axis (7). 4. Teilschnittmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Innenwalze (4) mit Schaftmeißeln (9) bestückt ist.4. Partial cutting machine according to one of claims 1 to 3, characterized in that the inner roller (4) is equipped with chisels (9). 5. Teilschnittmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Verbindung zwischen Schneidkopf (2) und Teilschnittmaschine aus einem Tragarm (10) , einer Profilschiene (11) sowie einer Trägerscheibe (13) besteht, wobei die Trägerscheibe (13) drehbar mit der Teilschnittmaschine (1), die Profilschiene (11) starr mit der Trägerscheibe (13), der Tragarm (10) radial verschiebbar mit der Profilschiene (11) und der Schneidkopf (2) starr mit dem Tragarm (10) verbunden ist.5. Partial cutting machine according to one of claims 1 to 4, characterized in that the connection between the cutting head (2) and the partial cutting machine consists of a support arm (10), a profile rail (11) and a carrier disc (13), the carrier disc (13) rotatable with the partial cutting machine (1), the profile rail (11) rigidly connected to the carrier disc (13), the support arm (10) radially displaceable with the profile rail (11) and the cutting head (2) rigidly connected to the support arm (10). 6. Teilschnittmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Teilschnittmaschine (1) in der bereits aufgefahrenen Strecke radial verspannt ist.6. Partial cutting machine according to one of claims 1 to 5, characterized in that the partial cutting machine (1) is radially braced in the distance already traveled. 7. Teilschnittmaschinen nach Anspruch 6, dadurch gekennzeichnet, daß die Stützplatten der Verspannung mindest im Bereich der Streckenfirste und der oberen Streckenstöße als Schutzschilde (16, 17) ausgebildet sind.7. Partial cutting machine according to claim 6, characterized in that the support plates of the bracing are formed at least in the area of the section ridges and the upper section joints as protective shields (16, 17).
EP80105723A 1979-09-27 1980-09-24 Cutter for a partial-cut driving machine Ceased EP0026439A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792939087 DE2939087C2 (en) 1979-09-27 1979-09-27 Longitudinal cutting head for a partial cutting machine
DE2939087 1979-09-27

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EP0026439A2 true EP0026439A2 (en) 1981-04-08
EP0026439A3 EP0026439A3 (en) 1981-05-20

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US6569562B1 (en) 1999-05-05 2003-05-27 Wilson Greatbatch Ltd. Electrochemical cell with novel header assembly

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE3421704C2 (en) * 1984-06-12 1986-05-28 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Device for expanding the cross-sectional profile of a gallery, tunnel or the like.

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FR1212888A (en) * 1957-10-09 1960-03-28 Steinkohlenbergwerk Hannover H Tunnel drilling machine by advancement
FR1232725A (en) * 1958-08-09 1960-10-11 Eickhoff Geb Cylinder cutter with additional cutting unit
DE1182618B (en) * 1960-07-20 1964-12-03 Eickhoff Geb Tunneling machine
FR1383686A (en) * 1964-03-06 1964-12-24 Gewerk Eisenhuette Westfalia Device for the automatic extraction of coal by means of a cylinder equipped with cutting peaks, particularly on its periphery
FR1445627A (en) * 1965-06-01 1966-07-15 Charbonnages De France Coal mining machine or other
CH448156A (en) * 1966-04-13 1967-12-15 Greenside Machine Co Ltd Machine for tunneling
DE1277779B (en) * 1965-11-10 1968-09-19 Aycliffe Ind Estate Driving machine for routes with a rectangular cross-section
DE1534612A1 (en) * 1965-12-22 1969-08-21 Demag Ag Boring head for a tunnel boring machine
CH496141A (en) * 1969-01-04 1970-09-15 Greenside Machine Co Ltd Process for the construction of tunnels, galleries or the like and road tunneling machine for carrying out the process
DE3007171A1 (en) * 1979-03-02 1980-09-04 Ct Kt Maszyn Gorniczych Komag DRUM DISMANTLING INSTRUMENT OF A COMBINED STREB COAL REMOVAL DEVICE

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DE1277778B (en) * 1965-07-09 1968-09-19 Greenside Machine Company Ltd Mining or tunneling machine
DE2746169C2 (en) * 1977-10-14 1984-05-10 Gesteins- Und Tiefbau Gmbh, 4350 Recklinghausen Longitudinal cutting head for a partial cut tunneling machine, especially for tunneling in mining

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1212888A (en) * 1957-10-09 1960-03-28 Steinkohlenbergwerk Hannover H Tunnel drilling machine by advancement
FR1232725A (en) * 1958-08-09 1960-10-11 Eickhoff Geb Cylinder cutter with additional cutting unit
DE1182618B (en) * 1960-07-20 1964-12-03 Eickhoff Geb Tunneling machine
FR1383686A (en) * 1964-03-06 1964-12-24 Gewerk Eisenhuette Westfalia Device for the automatic extraction of coal by means of a cylinder equipped with cutting peaks, particularly on its periphery
FR1445627A (en) * 1965-06-01 1966-07-15 Charbonnages De France Coal mining machine or other
DE1277779B (en) * 1965-11-10 1968-09-19 Aycliffe Ind Estate Driving machine for routes with a rectangular cross-section
DE1534612A1 (en) * 1965-12-22 1969-08-21 Demag Ag Boring head for a tunnel boring machine
CH448156A (en) * 1966-04-13 1967-12-15 Greenside Machine Co Ltd Machine for tunneling
CH496141A (en) * 1969-01-04 1970-09-15 Greenside Machine Co Ltd Process for the construction of tunnels, galleries or the like and road tunneling machine for carrying out the process
DE3007171A1 (en) * 1979-03-02 1980-09-04 Ct Kt Maszyn Gorniczych Komag DRUM DISMANTLING INSTRUMENT OF A COMBINED STREB COAL REMOVAL DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6569562B1 (en) 1999-05-05 2003-05-27 Wilson Greatbatch Ltd. Electrochemical cell with novel header assembly

Also Published As

Publication number Publication date
DE2939087A1 (en) 1981-04-02
DE2939087C2 (en) 1982-02-18
EP0026439A3 (en) 1981-05-20

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