EP0263095A1 - Cutting wheel for a shield-tunnelling machine - Google Patents

Cutting wheel for a shield-tunnelling machine Download PDF

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Publication number
EP0263095A1
EP0263095A1 EP87890218A EP87890218A EP0263095A1 EP 0263095 A1 EP0263095 A1 EP 0263095A1 EP 87890218 A EP87890218 A EP 87890218A EP 87890218 A EP87890218 A EP 87890218A EP 0263095 A1 EP0263095 A1 EP 0263095A1
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EP
European Patent Office
Prior art keywords
cutting
support plate
rope
cutting wheel
support plates
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
EP87890218A
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German (de)
French (fr)
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EP0263095B1 (en
Inventor
Peter Dipl.-Ing. Kogler
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Sandvik Mining and Construction GmbH
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Voestalpine AG
Voest Alpine Bergtechnik GmbH
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Publication of EP0263095A1 publication Critical patent/EP0263095A1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
    • E21D9/0879—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering

Definitions

  • the invention relates to a cutting wheel for a shield boring machine with a substantially radially directed cutting bar, on which knives and / or chisels are fixed, and between the cutting bars arranged support plates, which are supported by support plate cylinders on a rotatably drivable support, in which between support plates and Cutting bar flexible sealing elements are held by strips running in the circumferential direction of the support plates.
  • Rotating tools are usually arranged on shield boring machines.
  • Such shield tunneling machines are used, for example, for tunnel construction and have a self-contained shield, usually composed of several segments.
  • cutting bars are mostly designed as radially pointing tool carriers, between which the remaining space is filled by support plates.
  • the support plates are placed against the cutting bars in the axial direction via separate support plate cylinders, so that a gap for the passage of the cut rock onto the subsequent removal means remains between the support plates and the cutting bars.
  • the invention now aims to securely and permanently seal the area between the cutting bar and support plates and still create the possibility that broken or cut rock can pass through the gap between the support plates and cutting bar on the subsequent funding.
  • the invention essentially starts from a cutting wheel of the type mentioned at the beginning in that the flexible sealing elements are formed by side-by-side, rod-shaped elements, in particular rope pieces, which cross or intersect the radial direction.
  • the arrangement of juxtaposed elements means that Radial direction crossing or intersecting rod-shaped elements, in particular rope pieces, created the possibility of elastically deforming only the number of flexible elements which do not influence adjacent areas and which correspond to the size of the rock that passes through.
  • Wire rope pieces can exert a high degree of elastic restoring forces with a relatively small diameter of the individual wire rope pieces and still offer the security that the passage of a rock is possible in the respectively desired area without excessive wear of the seal.
  • a tensile load in the radial direction does not occur with such separate, rod-shaped flexible elements arranged next to one another and it actually only ever occurs the area subjected to elastic deformation which corresponds to the size of the rock. With a simultaneous increase in the service life of such a seal, more effective protection and a more effective seal are achieved in operation.
  • the rod-shaped elements in particular pieces of rope, are advantageously held on the circumference of the support plates and essentially normally on the edges of the support plate by means of the strips running in the circumferential direction, which are fixed on a support which can be connected to the support plate, for example by screws.
  • a simple fixing of the sealing elements is made possible and it is easily possible to fix the sealing elements according to the invention to the support plate and, in the event of damage, to repair parts of the seal which have become damaged by unscrewing the corresponding carrier and replacing the defective parts of the carrier.
  • the support plates In addition to the edges of such support plates which are adjacent to the cutting bars pointing in the radial direction and which can run essentially in a straight line, the support plates also have a circular edge which is adjacent to the circumference of the sign and which also leaves a more or less wide gap to the sign. This area, too, can be sealed with elastically deformable, rod-shaped flexible elements in a manner analogous to the inner area of the support plates adjacent to the cutting bars.
  • the rod-shaped elements can also be held between strips running in the circumferential direction of the support plate by clamping and / or welding.
  • the individual pieces of rope can have lengths of about 20 cm.
  • individual diameters of the rope pieces of 15 to 20 mm can be considered, which means that a high degree of flexibility and stability is guaranteed.
  • Rod-shaped elements formed by rope pieces can also be used as sealing elements on the outer circumference of the support plates, the design advantageously being such that rod-shaped elements, in particular rope pieces, are arranged on the outer circumference of the support plate, the length of which is less than the length of the cutting bar adjacent rod-shaped elements.
  • FIG. 1 shows an end view of a cutting wheel according to the invention and
  • FIG. 2 shows an axial section through a partial area of the cutting wheel according to FIG. 1 in an enlarged view.
  • FIG. 1 shows a cutting wheel which has three cutting bars 1 pointing in the radial direction.
  • the edges of these cutting bars 1 pointing in the radial direction carry cutting knives 2 which, when the cutting bars 1 rotate about the axis of rotation 3, are in engagement with the rock to be mined.
  • support plates 4 which can be displaced in the axial direction of the axis of rotation 3 by means of support plate cylinders acting on the locations indicated schematically by 5.
  • Each support plate 4 is adjustable with three support plate cylinders, which engage at the points indicated by 5, so that in addition to a displacement in the axial direction, an angular adjustment relative to the axis of rotation 3 or to the cutting bar 1 is also possible.
  • such a cutting bar 1 can be seen on which a cutting knife 2 is fixed.
  • the axis of rotation of the cutting wheel is again indicated with 3.
  • the rotary drive takes place via a motor designated 6, the entire cutting wheel, together with the drive, being displaceable in the direction of the axis of rotation 3 towards the working face.
  • a support plate 4, as it bridges the space between the cutting bar 1, is adjustable via the support plate cylinder 7 in the direction of the double arrows s 8 with a predetermined stroke and can also with respect to the majority of the support plate cylinders 7, which interact with a support plate 4, relative to the plane of rotation be inclined.
  • a gap 9 remains between the cutting knife 2 and the support plate 4, through which rock can get into the space behind the cutting wheel in the direction of the arrow 10 and can subsequently be transported away via a conveying means.
  • the hydraulic line for the actuation of the support plate cylinders, which rotates together with the carrier 11, is indicated schematically at 18.
  • a carrier 12 On the inner edge of the support plates, a carrier 12 is fixed, which receives adjacent pieces of rope 13. When the support plate 4 is moved in the direction of the working face, these pieces of rope reach the position 13 ⁇ , as a result of which the remaining gap between the cutting edge of the cutting knife 2 becomes correspondingly smaller. Since the individual pieces of rope 13 are elastically deformable, rock that penetrates can bend the individual pieces of rope in the direction of arrow 14, as a result of which the free passage of broken or cut rock is not hindered.
  • the individual pieces of rope 13 are arranged in a position that essentially intersects or intersects the radial direction 15 and are normal to the edge 16 of the support plates adjacent to the cutting bar 1.
  • Corresponding pieces of rope 13 can also be used as sealing elements on the outer circumference 17 of the support plates 4 be arranged.
  • the individual cutting bars can be arranged so as to be pivotable about an essentially radially directed axis and corresponding to the direction designated in FIG. 1 with 15, so that, depending on the direction of rotation of the cutting wheel, an optimal adjustment to the rock to be cut is made possible.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The cutting wheel has cutter bars (1) arranged in the radial direction and bearing cutting knives (2). The free space between such cutter bars (1) is filled by supporting plates (4), which are connected via a sealing element to the knives (2) of the cutter bar (1). The sealing element is formed by wire-cable pieces (13) which cross or intersect the radial direction and are arranged alongside one another in the radial direction. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Schneidrad für eine Schildvortriebsmaschine mit im wesentlichen radial gerichteten Schneidbalken, an welchem Messer und/oder Meißel festgelegt sind, und zwischen den Schneidbalken angeordneten Stützplatten, welche über Stützplattenzylinder an einem rotierbar antreibbaren Träger abgestützt sind, bei welchem zwischen Stützplatten und Schneidbalken flexible Dichtelemente von in Umfangsrichtung der Stützplatten verlaufenden Leisten gehalten sind.The invention relates to a cutting wheel for a shield boring machine with a substantially radially directed cutting bar, on which knives and / or chisels are fixed, and between the cutting bars arranged support plates, which are supported by support plate cylinders on a rotatably drivable support, in which between support plates and Cutting bar flexible sealing elements are held by strips running in the circumferential direction of the support plates.

Bei Schildvortriebsmaschinen werden in der Regel rotierende Werkzeuge angeordnet. Derartige Schildvortriebsmaschinen werden beispielsweise für den Tunnelbau eingesetzt und verfügen über einen in sich geschlossenen, zumeist aus mehreren Segmenten zusammengesetzten Schild. Bei Verwendung von Schneidrädern zum Abtragen des Gesteins an der Ortsbrust sind Schneidbalken zumeist als radial weisende Werkzeugträger ausgebildet, zwischen welchen der verbleibende Raum durch Stützplatten ausgefüllt ist. Die Stützplatten werden über jeweils gesonderte Stützplattenzylinder in axialer Richtung gegen die Schneidbalken angestellt, so daß zwischen den Stützplatten und den Schneidbalken ein Spalt für den Durchtritt des geschnittenen Gesteins auf das nachfolgende Abfördermittel verbleibt. Zur Verringerung der Staubbelastung ist es bereits vorgeschlagen worden, diesen verbleibenden Spalt zwischen Schneidbalken und Stützplatten durch von Gummimatten gebildete elastische Dichtelemente abzudecken. Aus der AT-PS 314 588 ist ein Schneidkopf für eine Schildvortriebsmaschine bekanntgeworden, bei welchem zur Abdeckung des Schlitzes zwischen den Schneidwerkzeugen und Stützplatten unter Federdruck stehende Abdeckleisten aus PVC verwendet werden. Da das geschnittene Gestein zumeist scharfkantig ist, ist die Lebensdauer derartiger Gummimatten bzw. Abdeckleisten überaus gering und eine wirkungsvolle Dichtung nach kürzester Zeit nicht mehr gewährleistet.Rotating tools are usually arranged on shield boring machines. Such shield tunneling machines are used, for example, for tunnel construction and have a self-contained shield, usually composed of several segments. When using cutting wheels to remove the rock on the working face, cutting bars are mostly designed as radially pointing tool carriers, between which the remaining space is filled by support plates. The support plates are placed against the cutting bars in the axial direction via separate support plate cylinders, so that a gap for the passage of the cut rock onto the subsequent removal means remains between the support plates and the cutting bars. To reduce the dust load, it has already been proposed to cover this remaining gap between the cutting bar and support plates by elastic sealing elements formed by rubber mats. From AT-PS 314 588 a cutting head for a shield tunneling machine has become known, in which cover strips made of PVC under spring pressure are used to cover the slot between the cutting tools and support plates. Since the cut rock is mostly sharp-edged, the service life of such rubber mats or cover strips is extremely long low and an effective seal can no longer be guaranteed after a very short time.

Die Erfindung zielt nun darauf ab, den Bereich zwischen Schneidbalken und Stützplatten sicher und dauerhaft abzudichten und dennoch die Möglichkeit zu schaffen, daß hereingebrochenes bzw. geschnittenes Gestein durch den Spalt zwischen Stützplatten und Schneidbalken auf das nachfolgende Fördermittel gelangen kann. Zur Lösung dieser Aufgabe besteht die Erfindung ausgehend von einem Schneidrad der eingangs genannten Art im wesentlichen darin, daß die flexiblen Dichtelemente von nebeneinander angeordneten, die radiale Richtung kreuzenden oder schneidenden, stabförmigen Elementen, insbesondere Seilstücken, gebildet sind. Während bei den bekannten plattenförmigen Abdichtelementen ein einzelner durchtretender Gesteinsbrocken immer mehr oder minder große Teilbereiche des Dichtelementes elastisch verformen muß, um tatsächlich auf das nachfolgende Fördermittel zu gelangen und dabei mit seinen scharfen Kanten das flächige Material verletzt, ist durch die Anordnung von nebeneinander angeordneten, die radiale Richtung kreuzenden oder schneidenden stabförmigen Elementen, insbesondere Seilstücken, die Möglichkeit geschaffen, jeweils nur diejenige Anzahl von flexiblen Elementen ohne Beeinflussung benachbarter Bereiche elastisch zu verformen, welche der Größe des durchtretenden Gesteinsbrockens entsprechen. Drahtseilstücke können bei relativ geringem Durchmesser der einzelnen Drahtseilstücke ein hohes Maß an elastischen Rückstellkräften ausüben und dennoch die Sicherheit bieten, daß in dem jeweils gewünschten Bereich der Durchtritt eines Gesteinsbrockens ohne übermäßigen Verschleiß der Dichtung möglich wird. Eine Zugbelastung in radialer Richtung, wie sie bei zusammenhängenden flächigen Dichtelementen unvermeidbar ist und dadurch zu einem verfrühten Reißen des Dichtelementes führt, tritt bei derartigen gesonderten nebeneinander angeordneten stabförmigen flexiblen Elementen nicht auf und es wird tatsächlich immer nur derjenige Bereich ei ner elastischen Verformung unterworfen, welcher der Größe des Gesteinsbrockens entspricht. Bei gleichzeitiger Erhöhung der Lebensdauer einer derartigen Dichtung, wird auch ein wirkungsvollerer Schutz und eine wirkungsvollere Dichtung im Betrieb erzielt.The invention now aims to securely and permanently seal the area between the cutting bar and support plates and still create the possibility that broken or cut rock can pass through the gap between the support plates and cutting bar on the subsequent funding. To achieve this object, the invention essentially starts from a cutting wheel of the type mentioned at the beginning in that the flexible sealing elements are formed by side-by-side, rod-shaped elements, in particular rope pieces, which cross or intersect the radial direction. While in the known plate-shaped sealing elements, a single piece of rock that passes through it must elastically deform more and less large sub-areas of the sealing element in order to actually reach the subsequent conveying means and thereby injure the flat material with its sharp edges, the arrangement of juxtaposed elements means that Radial direction crossing or intersecting rod-shaped elements, in particular rope pieces, created the possibility of elastically deforming only the number of flexible elements which do not influence adjacent areas and which correspond to the size of the rock that passes through. Wire rope pieces can exert a high degree of elastic restoring forces with a relatively small diameter of the individual wire rope pieces and still offer the security that the passage of a rock is possible in the respectively desired area without excessive wear of the seal. A tensile load in the radial direction, as is unavoidable in the case of coherent flat sealing elements and thereby leads to premature tearing of the sealing element, does not occur with such separate, rod-shaped flexible elements arranged next to one another and it actually only ever occurs the area subjected to elastic deformation which corresponds to the size of the rock. With a simultaneous increase in the service life of such a seal, more effective protection and a more effective seal are achieved in operation.

Mit Vorteil sind die stabförmigen Elemente, insbesondere Seilstücke, am Umfang der Stützplatten und im wesentlichen normal auf die Ränder der Stützplatte mittels der in Umfangsrichtung verlaufenden Leisten, welche auf einem mit der Stützplatte, beispielsweise durch Schrauben, verbindbaren Träger festgelegt sind, gehalten. Auf diese Weise wird eine einfache Festlegung der Dichtungselemente ermöglicht und ist es leicht möglich, die erfindungsgemäßen Dichtelemente an der Stützplatte festzulegen und im Falle von Schäden schadhaftgewordene Teilbereiche der Dichtung durch Abschrauben des entsprechendes Trägers und Austausch der schadhaften Teilbereiche des Trägers wiederum zu reparieren. Neben den den in radiale Richtung weisenden Schneidbalken benachbarten Kanten derartiger Stützplatten, welche im wesentlichen geradlinig verlaufen können, weisen die Stützplatten auch eine dem Umfang des Schildes benachbarte kreisrunde Kante auf, welche gleichfalls einen mehr oder minder breiten Spalt zum Schild freiläßt. Auch dieser Bereich kann in analoger Weise wie der innenliegende den Schneidbalken benachbarte Bereich der Stützplatten mit elastisch verformtaren stabförmigen flexiblen Elementen abgedichtet werden.The rod-shaped elements, in particular pieces of rope, are advantageously held on the circumference of the support plates and essentially normally on the edges of the support plate by means of the strips running in the circumferential direction, which are fixed on a support which can be connected to the support plate, for example by screws. In this way, a simple fixing of the sealing elements is made possible and it is easily possible to fix the sealing elements according to the invention to the support plate and, in the event of damage, to repair parts of the seal which have become damaged by unscrewing the corresponding carrier and replacing the defective parts of the carrier. In addition to the edges of such support plates which are adjacent to the cutting bars pointing in the radial direction and which can run essentially in a straight line, the support plates also have a circular edge which is adjacent to the circumference of the sign and which also leaves a more or less wide gap to the sign. This area, too, can be sealed with elastically deformable, rod-shaped flexible elements in a manner analogous to the inner area of the support plates adjacent to the cutting bars.

Die stabförmigen Elemente können auch zwischen in Umfangsrichtung der Stützplatte verlaufenden Leisten durch Klemmung und/oder Schweißung gehalten werden.The rod-shaped elements can also be held between strips running in the circumferential direction of the support plate by clamping and / or welding.

Für die Dichtung zu den Schneidbalken können die einzelnen Seilstücke Längen von etwa 20 cm aufweisen. Als geeigneter Durchmesser im Falle von Drahtseilen, kommen Einzeldurchmesser der Seilstücke von 15 bis 20 mm in Betracht, wodurch ein hohes Maß an Flexibilität und Stabilität gewährleistet ist. Auch am Außenumfang der Stützplatten können von Seilstücken gebildete stabförmige Elemente als Dichtungselemente eingesetzt werden, wobei mit Vorteil die Ausbildung so getroffen ist, daß am Außenumfang der Stützplatte stabförmige Elemente, insbesondere Seilstücke, angeordnet sind, deren Länge geringer ist, als die Länge der den Schneidbalken benachbarten stabförmigen Elemente.For the seal to the cutting bars, the individual pieces of rope can have lengths of about 20 cm. As a suitable diameter in the case of wire ropes, individual diameters of the rope pieces of 15 to 20 mm can be considered, which means that a high degree of flexibility and stability is guaranteed. Rod-shaped elements formed by rope pieces can also be used as sealing elements on the outer circumference of the support plates, the design advantageously being such that rod-shaped elements, in particular rope pieces, are arranged on the outer circumference of the support plate, the length of which is less than the length of the cutting bar adjacent rod-shaped elements.

Die Erfindung wird nachfolgend an Hand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert. In dieser zeigen Fig.1 eine Stirnansicht eines erfindungsgemäßen Schneidrades und Fig.2 einen Axialschnitt durch einen Teilbereich des Schneidrades nach Fig.1 in vergrößerter Darstellung.The invention is explained in more detail below on the basis of an exemplary embodiment schematically illustrated in the drawing. 1 shows an end view of a cutting wheel according to the invention and FIG. 2 shows an axial section through a partial area of the cutting wheel according to FIG. 1 in an enlarged view.

In Fig.1 ist ein Schneidrad dargestellt, welches drei in radialer Richtung weisende Schneidbalken 1 aufweist. Die in radiale Richtung weisenden Kanten dieser Schneidbalken 1 tragen Schneidmesser 2, welche bei Rotation der Schneidbalken 1 um die Rotationsachse 3 mit dem abzubauenden Gestein im Eingriff stehen.1 shows a cutting wheel which has three cutting bars 1 pointing in the radial direction. The edges of these cutting bars 1 pointing in the radial direction carry cutting knives 2 which, when the cutting bars 1 rotate about the axis of rotation 3, are in engagement with the rock to be mined.

Der zwischen den Schneidbalken 1 verbleibende Raum, wird durch Stützplatten 4 ausgefüllt, welche über an den schematisch mit 5 angedeuteten Stellen angreifende Stützplattenzylinder in axialer Richtung der Rotationsachse 3 verschoben werden können. Jede Stützplatte 4 ist hiebei mit drei Stützplattenzylindern, welche an den mit 5 angedeuteten Stellen angreifen, verstellbar, so daß neben einer Verschiebung in axialer Richtung auch eine Winkelanstellung relativ zur Rotationsachse 3 bzw. zu den Schneidbalken 1 möglich ist.The space remaining between the cutting bars 1 is filled by support plates 4 which can be displaced in the axial direction of the axis of rotation 3 by means of support plate cylinders acting on the locations indicated schematically by 5. Each support plate 4 is adjustable with three support plate cylinders, which engage at the points indicated by 5, so that in addition to a displacement in the axial direction, an angular adjustment relative to the axis of rotation 3 or to the cutting bar 1 is also possible.

Bei der Darstellung nach Fig.2 ist ein derartiger Schneidbalken 1 ersichtlich, an welchem ein Schneidmesser 2 festgelegt ist. Die Rotationsachse des Schneidrades ist wiederum mit 3 angedeutet. Der Rotationsantrieb erfolgt über einen mit 6 bezeichneten Motor, wobei das gesamte Schneidrad gemeinsam mit dem Antrieb in Richtung der Rotationsachse 3 zur Ortsbrust hin verlagerbar ist. Eine Stützplatte 4, wie sie den Raum zwischen den Schneidbalken 1 überbrückt, ist über Stützplattenzylinder 7 in Richtung des Doppelpfeile s 8 mit vorgegebenem Hub verstellbar und kann mit Rücksicht auf die Mehrzahl der Stützplattenzylinder 7, welche mit einer Stützplatte 4 zusammenwirken, auch relativ zur Rotationsebene geneigt werden. Zwischen dem Schneidmesser 2 und der Stützplatte 4 verbleibt ein Spalt 9, durch welchen Gestein in Richtung des Pfeiles 10 in den Raum hinter dem Schneidrad gelangen kann und in der Folge über ein Abfördermittel abtransportiert werden kann.In the illustration according to FIG. 2, such a cutting bar 1 can be seen on which a cutting knife 2 is fixed. The axis of rotation of the cutting wheel is again indicated with 3. The rotary drive takes place via a motor designated 6, the entire cutting wheel, together with the drive, being displaceable in the direction of the axis of rotation 3 towards the working face. A support plate 4, as it bridges the space between the cutting bar 1, is adjustable via the support plate cylinder 7 in the direction of the double arrows s 8 with a predetermined stroke and can also with respect to the majority of the support plate cylinders 7, which interact with a support plate 4, relative to the plane of rotation be inclined. A gap 9 remains between the cutting knife 2 and the support plate 4, through which rock can get into the space behind the cutting wheel in the direction of the arrow 10 and can subsequently be transported away via a conveying means.

Die Hydraulikleitung für die Betätigung der Stützplattenzylinder, welche gemeinsam mit dem Träger 11 rotiert, ist schematisch mit 18 angedeutet.The hydraulic line for the actuation of the support plate cylinders, which rotates together with the carrier 11, is indicated schematically at 18.

An der Innenkante der Stützplatten ist ein Träger 12 festgelegt, welcher aneinander anschließend angeordnete Seilstücke 13 aufnimmt. Bei Verschiebung der Stützplatte 4 in Richtung zur Ortsbrust gelangen diese Seilstücke in die Position 13ʹ, wodurch der verbleibende Spalt zwischen der Schneidkante der Schneidmesser 2 entsprechend geringer wird. Da die einzelnen Seilstücke 13 elastisch verformbar sind, kann durchtretendes Gestein die einzelnen Seilstücke in Richtung des Pfeiles 14 abbiegen, wodurch der freie Durchtritt von gebrochenem bzw. geschnittenem Gestein nicht behindert wird.On the inner edge of the support plates, a carrier 12 is fixed, which receives adjacent pieces of rope 13. When the support plate 4 is moved in the direction of the working face, these pieces of rope reach the position 13ʹ, as a result of which the remaining gap between the cutting edge of the cutting knife 2 becomes correspondingly smaller. Since the individual pieces of rope 13 are elastically deformable, rock that penetrates can bend the individual pieces of rope in the direction of arrow 14, as a result of which the free passage of broken or cut rock is not hindered.

Die einzelnen Seilstücke 13 sind, wie insbesondere aus Fig.1 ersichtlich ist, in im wesentlichen die radiale Richtung 15 schneidender bzw. kreuzender Position angeordnet und stehen normal auf die den Schneidbalken 1 benachbarte Kante 16 der Stützplatten. Auch am Außenumfang 17 der Stützplatten 4 können entsprehende Seilstücke 13 als Dichtungselemente angeordnet sein. Die einzelnen Schneidbalken können um eine im wesentlichen radial gerichtete und der in Fig.1 mit 15 bezeichneten Richtung entsprechende Achse schwenkbar angeordnet sein, so daß je nach Drehrichtung des Schneidrades eine optimale Anstellung an das zu schneidende Gestein ermöglicht wird. As can be seen in particular from FIG. 1, the individual pieces of rope 13 are arranged in a position that essentially intersects or intersects the radial direction 15 and are normal to the edge 16 of the support plates adjacent to the cutting bar 1. Corresponding pieces of rope 13 can also be used as sealing elements on the outer circumference 17 of the support plates 4 be arranged. The individual cutting bars can be arranged so as to be pivotable about an essentially radially directed axis and corresponding to the direction designated in FIG. 1 with 15, so that, depending on the direction of rotation of the cutting wheel, an optimal adjustment to the rock to be cut is made possible.

Claims (3)

1. Schneidrad für eine Schildvortriebsmaschine mit im wesentlichen radial gerichteten Schneidbalken (1), an welchen Messer (2) und/oder Meißel festgelegt sind, und zwischen den Schneidbalken (1) angeordneten Stützplatten (4), welche über Stützplattenzylinder an einem rotierbar antreibbaren Träger (11) abgestützt sind, bei welchem zwischen Stützplatten (4) und Schneidbalken (1) flexible Dichtelemente von in Umfangsrichtung der Stützplatten (4) verlaufenden Leisten gehalten sind, dadurch gekennzeichnet, daß die flexiblen Dichtelemente von nebeneinander angeordneten, die radiale Richtung kreuzenden oder schneidenden, stabförmigen Elementen, insbesondere Seilstücken (13) gebildet sind.1. Cutting wheel for a shield tunneling machine with a substantially radially directed cutting bar (1), on which knives (2) and / or chisels are fixed, and between the cutting bars (1) arranged support plates (4), which are supported by support plate cylinders on a rotatably drivable support (11) are supported, in which flexible sealing elements are held by strips running in the circumferential direction of the supporting plates (4) between support plates (4) and cutting bar (1), characterized in that the flexible sealing elements are arranged next to one another, crossing or cutting the radial direction , rod-shaped elements, in particular pieces of rope (13) are formed. 2. Schneidrad nach Anspruch 1, dadurch gekennzeichnet, daß die stabförmigen Elemente, insbesondere Seilstücke (13), am Umfang der Stützplatten (4) und im wesentlichen normal auf die Ränder der Stützplatte mittels der in Umfangsrichtung verlaufenden Leisten, welche auf einem mit der Stützplatte (4), beispielsweise durch Schrauben, verbindbaren Träger festgelegt sind, gehalten werden.2. Cutting wheel according to claim 1, characterized in that the rod-shaped elements, in particular rope pieces (13), on the circumference of the support plates (4) and substantially normal to the edges of the support plate by means of the strips running in the circumferential direction, which on a with the support plate (4), for example by screws, connectable supports are held. 3. Schneidrad nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß am Außenumfang der Stützplatte (4) stabförmige Elemente, insbesondere Seilstücke (13), angeordnet sind, deren Länge geringer ist, als die Länge der den Schneidbalken (1) benachbarten stabförmigen Elemente.3. Cutting wheel according to claim 1 or 2, characterized in that on the outer circumference of the support plate (4) rod-shaped elements, in particular pieces of rope (13) are arranged, the length of which is less than the length of the bar-shaped elements adjacent to the cutting bar (1).
EP87890218A 1986-09-30 1987-09-30 Cutting wheel for a shield-tunnelling machine Expired - Lifetime EP0263095B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2607/86 1986-09-30
AT0260786A AT386459B (en) 1986-09-30 1986-09-30 CUTTING WHEEL FOR A SHIELD DRIVING MACHINE

Publications (2)

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EP0263095A1 true EP0263095A1 (en) 1988-04-06
EP0263095B1 EP0263095B1 (en) 1992-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890218A Expired - Lifetime EP0263095B1 (en) 1986-09-30 1987-09-30 Cutting wheel for a shield-tunnelling machine

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EP (1) EP0263095B1 (en)
AT (1) AT386459B (en)
DE (1) DE3775689D1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1419068A (en) * 1922-06-06 Electric well-boeing tool
AT314588B (en) * 1970-10-13 1974-04-10 Bade & Co Gmbh Cutting head for a shield tunneling machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7708111A (en) * 1976-07-29 1978-01-31 Nuttall Ltd Edmund SEAL FOR A TUNNEL SHAPE SHIELD.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1419068A (en) * 1922-06-06 Electric well-boeing tool
AT314588B (en) * 1970-10-13 1974-04-10 Bade & Co Gmbh Cutting head for a shield tunneling machine

Also Published As

Publication number Publication date
ATA260786A (en) 1988-01-15
EP0263095B1 (en) 1992-01-02
DE3775689D1 (en) 1992-02-13
AT386459B (en) 1988-08-25

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