EP0957232A1 - Roller bit with segemented cutting rings for tunneling machines - Google Patents

Roller bit with segemented cutting rings for tunneling machines Download PDF

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Publication number
EP0957232A1
EP0957232A1 EP99108959A EP99108959A EP0957232A1 EP 0957232 A1 EP0957232 A1 EP 0957232A1 EP 99108959 A EP99108959 A EP 99108959A EP 99108959 A EP99108959 A EP 99108959A EP 0957232 A1 EP0957232 A1 EP 0957232A1
Authority
EP
European Patent Office
Prior art keywords
roller
chisel
cutting
segments
cutting ring
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.)
Withdrawn
Application number
EP99108959A
Other languages
German (de)
French (fr)
Inventor
Klaus-Dieter Sauer
Günter Fennel
Ernst Heiderich
Bernd Ries
Reinhold Walter
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.)
Boart Longyear GmbH and Co KG
Original Assignee
Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik
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
Priority claimed from DE1998121404 external-priority patent/DE19821404C2/en
Priority claimed from DE19821390A external-priority patent/DE19821390A1/en
Application filed by Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik, Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik filed Critical Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Publication of EP0957232A1 publication Critical patent/EP0957232A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts

Definitions

  • the invention relates to a roller chisel for tunnel boring machines.
  • Known tunnel boring machines are with cutting heads and roller chisels equipped with cutting elements, e.g. Cutting pins, load-bearing cutting rings are provided, which consist of one part. These cutting rings are on the Cutting body pressed on, shrunk on or by means of a circlip and groove secured. Furthermore, cutting rollers without cutting rings are known, in which Cutting pins are soldered or shrunk directly into the base of the roller chisel are. The cutting rings and the cutting rollers provided with cutting pins can have different profiles.
  • a disadvantage of the known designs is that if necessary Repair of the complete roller chisel or its cutting ring in the Whole must be replaced, even if only a part of the Cutting ring is affected. This causes long repair times, as well as one Technically unacceptable effort, because the roller chisel from the Drill head must be removed completely to carry out such a repair to be able to.
  • the invention is therefore based on the object of a generic roller chisel for tunnel boring machines to create the disadvantages of the known avoids technical solutions.
  • the cutting ring consists of at least two or there are more segments that are interchangeably attached to the roller base are. This makes it possible for the cutting ring itself or worn Renew parts of the cutting ring in segments, without the disassembly previously required and assembly of the complete roller chisel from the drill head with the associated transport costs. The total advance time is thus minimized by shorter repair times because the segments of the cutting ring are in front Location can be changed. The material costs are also reduced.
  • the segments of the cutting ring can be positively preferably with a dovetail guide or T-slot and adapters arranged on the roller base body in a determined position and by means of screwable Segment brackets and / or by means of threaded rings with the roller base be connected.
  • Figure 1 shows an example of a cutting ring 1 from four segments 2.
  • the number of segments 2 can be between two segments 2 and several segments 2 are located according to the respective application.
  • the cutting elements 3 for example carbide cutting pins used.
  • the cutting rings 1 can be arranged so that they are available in one, two or more lanes are, i.e. it can optionally several cutting rings 1 in parallel side by side arranged on the roller base body 4 recognizable in the following figures be.
  • the diameter of the cutting rings 1 in not shown Ascending from the first to the subsequent cutting rings 1 graded can be chosen so that the cutting roller has a conical shape receives.
  • FIG. 2 shows the arrangement of a 2-track cutting body with attachment the roller base 4, in a sectional view. It can be seen that in The circumference of the roller base 4 has a dovetail-shaped recess is incorporated. In the central area, this recess is wedge-shaped Axis offset. There is a thread in this wedge-shaped center provided, in which a screw 6, a clamping element 7 is screwed is after the cutting rings 1 in the dovetail guides worked out on both sides were introduced. Both are in this arrangement Cutting rings 1 over surfaces by the clamping element 7 against the inside of the Dovetail guide securely and firmly clamped. By loosening the screw 6 and removal of the tensioning element 7 are the segments 2 of the cutting rings 1 easily removable and replaceable on site with little effort.
  • FIG. 3 shows the arrangement of a 3-track cutting body with a screw connection shown.
  • the outer cutting rings 1 in turn engage outwards the dovetail guide and have a collar 8 on the Scope of the roller base body 4 rests.
  • the inward facing profiles of the outer cutting rings 1 are continuously wedge-shaped, so that the middle Cutting ring 1 ', which is wedge-shaped on both sides, between the two outer Cutting rings 1 is arranged.
  • a through hole is provided for a screw 6 with which the outer Cutting rings 1 over the middle cutting rings 1 'against the dovetail guide of the roller body 4 are firmly and securely clamped.
  • the shape of the Tension rings 1,1 ' secure the individual segments 2.
  • Figure 4 shows another embodiment of a 2-track cutting body with a dovetail guide arranged at the bottom on the roller base 4.
  • the segments 2 of the cutting ring 1 are recessed on both sides Provide dovetail guides so that their inward-facing surfaces enclose an intermediate ring 9 provided with such a counter profile.
  • the lower cutting ring 1 is on the guide of the basic roller body 4 created. This is followed by the intermediate ring 9 and the upper cutting ring 1.
  • a clamping nut 10 the plan side from above on the Roller body 4 is screwed on, secures the segments 2 of the cutting rings 1 against the roller body 4 by tightening it positively and non-positively.
  • cutting ring 1 does not have individual cutting elements, but rather forms a circumferential when assembling the individual segments 2 Cutting ring.
  • the individual segments 2 are in turn by a clamping nut 10 held on the roller base 4.
  • Figures 6 and 7 show a special embodiment of a cutting ring 1, in which the individual cutting elements 3 are not soldered into the segments 2 or shrunk, but releasably connected to them. This makes possible to take even better account of partial wear and tear on individual segments 2, by then not the entire segment 2, but only the worn ones Cutting elements 3 must be replaced. This will make even fewer Repair and maintenance times and further reduced material requirements reached. The required driving time of the roller chisel can therefore go even further be reduced.
  • the releasable connection the cutting elements 3 with the segments 2 achieved in that the Cutting elements 3 are chisel-shaped with a chisel shaft 11, the engages in a corresponding receptacle 12 of segment 2.
  • the chisel shafts 11 of the cutting elements 3 of the embodiment shown in FIGS. 6 and 7 are cylindrical and in the also cylindrical receptacles 12 secured by clamping elements. As shown, these can be used as clamping sleeves 13 on the chisel shaft 11 and / or in the receptacle 12.
  • recesses 16 are introduced through which a shoulder region 14 of the Cutting elements 3 are gripped by a suitable tool and that Cutting element 3 can be pushed out.
  • FIG. 3 Shape with conical chisel shafts 11 and correspondingly conical receptacles 12.
  • the cutting elements 3 so clamped can be inserted into the Cutting rings 1 corresponding bores 15 pressed out for replacement become.
  • chisel shank 11 and holder 12 can be used in all selected connection types with coordinated holes for one Locking pin. This configuration is also the only connection with cylindrical chisel shafts 11 and receptacles 12 without a clamping element possible.
  • the cutting rings 1 can be segmented according to the invention made of different materials, for example steel, cast steel, chilled cast iron or Tungsten carbide exist. A pairing of materials is also possible, e.g. the Cutting rings 1 made of steel and the associated cutting elements 3 Carbide are made. With chisel-shaped cutting elements 3, these can uniform e.g. consist of hard metal or of different materials, for example, a chisel shaft 11 made of steel and a chisel head made of hard metal put together.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The segments (2) of the cutting ring (1) are arranged in specific position on the roller basic body by means of a profile connection, e.g. a dovetail guide and adjustment springs. The segments of the cutting ring are connected with the roller basic body by screwable segment retainers. The segments can also be connected with the roller basic body by clamp nuts. The cutting components (3) are formed as chisels with a head and a shaft (11), the shaft being held in a recess (12) of the cutting ring, shaft and recess being provided with matching threads.

Description

Die Erfindung betrifft einen Rollenmeißel für Tunnelvortriebsmaschinen.The invention relates to a roller chisel for tunnel boring machines.

Bekannte Tunnelvortriebsmaschinen sind mit Schneidköpfen und Rollenmeißeln bestückt, die mit Schneidelemente, z.B. Schneidstifte, tragenden Schneidringen versehen sind, welche aus einem Teil bestehen. Diese Schneidringe sind auf den Schneidkörper aufgepreßt, aufgeschrumpft oder mittels Sicherungsring und Nut gesichert. Des weiteren sind Schneidrollen ohne Schneidringe bekannt, bei denen Schneidstifte direkt in den Grundkörper des Rollenmeißels eingelötet bzw. eingeschrumpft sind. Die Schneidringe und die mit Schneidstiften versehenen Schneidrollen können unterschiedlichste Profile aufweisen.Known tunnel boring machines are with cutting heads and roller chisels equipped with cutting elements, e.g. Cutting pins, load-bearing cutting rings are provided, which consist of one part. These cutting rings are on the Cutting body pressed on, shrunk on or by means of a circlip and groove secured. Furthermore, cutting rollers without cutting rings are known, in which Cutting pins are soldered or shrunk directly into the base of the roller chisel are. The cutting rings and the cutting rollers provided with cutting pins can have different profiles.

Von Nachteil bei den bekannten Ausführungsarten ist, daß im Falle einer notwendigen Reparatur der komplette Rollenmeißel oder dessen Schneidring im Ganzen ausgewechselt werden muß, auch wenn nur ein Teilbereich des Schneidringes betroffen ist. Dies verursacht lange Reparaturzeiten, sowie einen materialtechnisch nicht vertretbaren Aufwand, da der Rollenmeißel aus dem Bohrkopf komplett ausgebaut werden muß, um eine solche Reparatur durchführen zu können.A disadvantage of the known designs is that if necessary Repair of the complete roller chisel or its cutting ring in the Whole must be replaced, even if only a part of the Cutting ring is affected. This causes long repair times, as well as one Technically unacceptable effort, because the roller chisel from the Drill head must be removed completely to carry out such a repair to be able to.

Der Erfindung liegt daher die Aufgabe zugrunde, einen gattungsgemäßen Rollenmeißel für Tunnelvortriebsmaschinen zu schaffen, der die Nachteile der bekannten technischen Lösungen vermeidet. The invention is therefore based on the object of a generic roller chisel for tunnel boring machines to create the disadvantages of the known avoids technical solutions.

Diese Aufgabe wird dadurch gelöst, daß der Schneidring aus mindestens zwei oder mehr Segmenten besteht, die auf dem Rollengrundkörper auswechselbar befestigt sind. Dadurch ist es möglich, den Schneidring selbst oder verschlissene Teile des Schneidringes segmentweise zu erneuern, ohne die bisher nötige Demontage und Montage des kompletten Rollenmeißels aus dem Bohrkopf mit dem damit verbundenen Transportaufwand. Die gesamte Vortriebszeit wird somit durch kürzere Reparaturzeiten minimiert, da die Segmente des Schneidringes vor Ort ausgewechselt werden können. Außerdem werden die Materialkosten verringert.This object is achieved in that the cutting ring consists of at least two or there are more segments that are interchangeably attached to the roller base are. This makes it possible for the cutting ring itself or worn Renew parts of the cutting ring in segments, without the disassembly previously required and assembly of the complete roller chisel from the drill head with the associated transport costs. The total advance time is thus minimized by shorter repair times because the segments of the cutting ring are in front Location can be changed. The material costs are also reduced.

Die Segmente des Schneidringes können mittels Profilführungen, formschlüssig, vorzugsweise mit einer Schwalbenschwanzführung oder T-Nut und Paßstücken auf dem Rollengrundkörper lagebestimmt angeordnet und mittels schraubbarer Segmenthalterungen und/oder mittels Gewinderingen mit dem Rollengrundkörper verbunden sein.The segments of the cutting ring can be positively preferably with a dovetail guide or T-slot and adapters arranged on the roller base body in a determined position and by means of screwable Segment brackets and / or by means of threaded rings with the roller base be connected.

Die Erfindung soll an Ausführungsbeispielen näher beschrieben werden. Die Zeichnungen zeigen:

Fig. 1
die schematische Darstellung der Anordnung eines Schneidkörpers mit vier Schneidringsegmenten,
Fig. 2
im Schnitt die Anordnung eines 2-spurigen Schneidrkörpers in Segmenten mit Befestigung auf dem Rollengrundkörper mittels Schraubverbindung,
Fig. 3
im Schnitt die Anordnung eines 3-spurigen Schneidkörpers in Segmenten mit Befestigung auf dem Rollengrundkörper mittels Schraubverbindung,
Fig. 4
im Schnitt die Anordnung eines 2-spurigen Schneidkörpers in Segmenten, mit Zwischenring, mit Befestigung durch eine Spannmutter,
Fig. 5
im Schnitt einen Schneidkörper mit Schneidkranz, befestigt durch eine Spannmutter,
Fig. 6
eine perspektivische Darstellung eines Schneidringes mit auswechselbaren Schneidelementen und
Fig. 7
eine Draufsicht auf den Gegenstand aus Fig. 6.
The invention will be described in more detail using exemplary embodiments. The drawings show:
Fig. 1
the schematic representation of the arrangement of a cutting body with four cutting ring segments,
Fig. 2
on average the arrangement of a 2-track cutting body in segments with attachment to the roller base body by means of a screw connection,
Fig. 3
on average the arrangement of a 3-track cutting body in segments with attachment to the roller base body by means of a screw connection,
Fig. 4
on average the arrangement of a 2-track cutting body in segments, with an intermediate ring, with attachment by a clamping nut,
Fig. 5
on average a cutting body with a cutting ring, fastened by a clamping nut,
Fig. 6
a perspective view of a cutting ring with interchangeable cutting elements and
Fig. 7
6 shows a plan view of the object from FIG. 6.

Figur 1 zeigt exemplarisch einen Schneidring 1 aus vier Segmenten 2. Erfindungsgemäß kann die Anzahl der Segmente 2 jedoch zwischen zwei Segmenten 2 und entsprechend dem jeweiligen Anwendungsfall mehreren Segmenten 2 liegen. In den äußeren Umfang der Schneidringe 1 bzw. der Segmente 2 sind Schneidelemente 3, beispielsweise Hartmetallschneidstifte eingesetzt. Die Schneidringe 1 können so angeordnet werden, daß sie ein-, zwei-, oder mehrspurig vorhanden sind, d.h. es können wahlweise mehrere Schneidringe 1 parallel nebeneinander auf dem in den folgenden Figuren erkennbaren Rollengrundkörper 4 angeordnet sein. Es sei erwähnt, daß dabei der Durchmesser der Schneidringe 1 in nicht dargestellter Weise vom ersten bis zu den nachfolgenden Schneidringen 1 aufsteigend gestuft gewählt werden kann, so daß die Schneidrolle eine konische Gestalt erhält.Figure 1 shows an example of a cutting ring 1 from four segments 2. According to the invention However, the number of segments 2 can be between two segments 2 and several segments 2 are located according to the respective application. In the outer circumference of the cutting rings 1 and the segments 2 are cutting elements 3, for example carbide cutting pins used. The cutting rings 1 can be arranged so that they are available in one, two or more lanes are, i.e. it can optionally several cutting rings 1 in parallel side by side arranged on the roller base body 4 recognizable in the following figures be. It should be mentioned that the diameter of the cutting rings 1 in not shown Ascending from the first to the subsequent cutting rings 1 graded can be chosen so that the cutting roller has a conical shape receives.

Figur 2 zeigt die Anordnung eines 2-spurigen Schneidkörpers mit Befestigung auf dem Rollengrundkörper 4, in einer Schnittdarstellung. Dabei ist zu sehen, daß im Umfang des Rollengrundkörpers 4 eine schwalbenschwanzförmige Ausnehmung eingearbeitet ist. Im Mittelbereich ist diese Ausnehmung weiter keilförmig zur Achse hin abgesetzt. In dieser keilförmigen Mittelausarbeitung ist ein Gewinde vorgesehen, in das eine Schraube 6, ein Spannelement 7 haltend eingeschraubt ist, nachdem die Schneidringe 1 in die beidseitig ausgearbeiteten Schwalbenschwanzführungen eingebracht wurden. Bei dieser Anordnung sind beide Schneidringe 1 über Flächen durch das Spannelement 7 gegen die Innenseiten der Schwalbenschwanzführung sicher und fest verspannt. Durch Lösen der Schraube 6 und Entfernen des Spannelementes 7 sind die Segmente 2 der Schneidringe 1 leicht und mit wenig Aufwand vor Ort entnehmbar und austauschbar.Figure 2 shows the arrangement of a 2-track cutting body with attachment the roller base 4, in a sectional view. It can be seen that in The circumference of the roller base 4 has a dovetail-shaped recess is incorporated. In the central area, this recess is wedge-shaped Axis offset. There is a thread in this wedge-shaped center provided, in which a screw 6, a clamping element 7 is screwed is after the cutting rings 1 in the dovetail guides worked out on both sides were introduced. Both are in this arrangement Cutting rings 1 over surfaces by the clamping element 7 against the inside of the Dovetail guide securely and firmly clamped. By loosening the screw 6 and removal of the tensioning element 7 are the segments 2 of the cutting rings 1 easily removable and replaceable on site with little effort.

In der Figur 3 ist die Anordnung eines 3-spurigen Schneidkörpers mit Schraubverbindung gezeigt. Die äußeren Schneidringe 1 greifen wiederum nach außen in die Schwalbenschwanzführung ein und weisen einen Bund 8 auf, der auf dem Umfang des Rollengrundkörpers 4 aufliegt. Die nach innen weisenden Profile der äußeren Schneidringe 1 sind durchgehend keilförmig gestaltet, so daß der mittlere Schneidring 1', der beidseitig keilförmig gestaltet ist, zwischen den beiden äußeren Schneidringen 1 angeordnet ist. Anstelle der Aufnahme eines Schneidstiftes 3 ist eine Durchgangsbohrung für eine Schraube 6 vorgesehen, mit der die äußeren Schneidringe 1 über den mittleren Schneidrings 1' gegen die Schwalbenschwanzführung des Rollengrundkörpers 4 fest und sicher verspannt werden. Die Form der Spannringe 1,1' sichert dabei die einzelnen Segmente 2. FIG. 3 shows the arrangement of a 3-track cutting body with a screw connection shown. The outer cutting rings 1 in turn engage outwards the dovetail guide and have a collar 8 on the Scope of the roller base body 4 rests. The inward facing profiles of the outer cutting rings 1 are continuously wedge-shaped, so that the middle Cutting ring 1 ', which is wedge-shaped on both sides, between the two outer Cutting rings 1 is arranged. Instead of receiving a cutting pin 3 a through hole is provided for a screw 6 with which the outer Cutting rings 1 over the middle cutting rings 1 'against the dovetail guide of the roller body 4 are firmly and securely clamped. The shape of the Tension rings 1,1 'secure the individual segments 2.

Figur 4 zeigt eine andere Ausführungsform eines 2-spurigen Schneidkörpers mit einer unten angeordneten Schwalbenschwanzführung am Rollengrundkörper 4. Die Segmente 2 des Schneidringes 1 sind beidseitig mit Ausnehmungen für Schwalbenschwanzführungen versehen, so daß ihre nach innen weisenden Flächen einen mit solchem Gegenprofil versehenen Zwischenring 9 umschließen. Zur Montage des Schneidkörpers wird der untere Schneidring 1 an der Führung des Rollengrundkorpers 4 angelegt. Daran schließt sich der Zwischenring 9 sowie der obere Schneidring 1 an. Eine Spannmutter 10, die planseitig von oben auf den Rollengrundkörper 4 aufgeschraubt wird, sichert die Segmente 2 der Schneidringe 1 gegen den Rollengrundkörper 4 indem sie sie form- und kraftschlüssig spannt.Figure 4 shows another embodiment of a 2-track cutting body with a dovetail guide arranged at the bottom on the roller base 4. The segments 2 of the cutting ring 1 are recessed on both sides Provide dovetail guides so that their inward-facing surfaces enclose an intermediate ring 9 provided with such a counter profile. To assemble the cutting body, the lower cutting ring 1 is on the guide of the basic roller body 4 created. This is followed by the intermediate ring 9 and the upper cutting ring 1. A clamping nut 10, the plan side from above on the Roller body 4 is screwed on, secures the segments 2 of the cutting rings 1 against the roller body 4 by tightening it positively and non-positively.

Die gleiche Art der Befestigung des Schneidringes 1 bzw. der Segmente 2 ist bei dem in Fig. 5 dargestellten einspurigen Schneidkörper gewählt. Der dort verwendete Schneidring 1 weist jedoch nicht einzelne Schneidelemente auf, sondern bildet beim Zusammensetzen der einzelnen Segmente 2 einen umlaufenden Schneidkranz aus. Die einzelnen Segmente 2 sind wiederum durch eine Spannmutter 10 am Rollengrundkörper 4 gehalten.The same type of attachment of the cutting ring 1 or the segments 2 is in selected the single-track cutting body shown in Fig. 5. The one used there However, cutting ring 1 does not have individual cutting elements, but rather forms a circumferential when assembling the individual segments 2 Cutting ring. The individual segments 2 are in turn by a clamping nut 10 held on the roller base 4.

Die Figuren 6 und 7 zeigen eine besondere Ausführungsform eines Schneidringes 1, bei dem die einzelnen Schneidelemente 3 nicht in die Segmente 2 eingelötet oder eingeschrumpft, sondern lösbar mit diesen verbunden sind. Dies ermöglicht es, partielle Abnutzungen einzelner Segmente 2 noch besser zu berücksichtigen, indem dann nicht das gesamte Segment 2, sondern nur die verschlissenen Schneidelemente 3 ausgewechselt werden müssen. Hierdurch werden noch geringere Reparatur- und Wartungszeiten und weiter verminderter Materialbedarf erreicht. Die benötigte Vortriebszeit des Rollenmeißels kann somit noch weiter herabgesetzt werden.Figures 6 and 7 show a special embodiment of a cutting ring 1, in which the individual cutting elements 3 are not soldered into the segments 2 or shrunk, but releasably connected to them. this makes possible to take even better account of partial wear and tear on individual segments 2, by then not the entire segment 2, but only the worn ones Cutting elements 3 must be replaced. This will make even fewer Repair and maintenance times and further reduced material requirements reached. The required driving time of the roller chisel can therefore go even further be reduced.

Bei der in den Figuren 6 und 7 dargestellten Ausführungsform ist die lösbare Verbindung der Schneidelemente 3 mit den Segmenten 2 dadurch erzielt, daß die Schneidelemente 3 meißelförmig mit einem Meißelschaft 11 ausgebildet sind, der in eine entsprechende Aufnahme 12 des Segmentes 2 eingreift. Die Meißelschäfte 11 der Schneidelemente 3 der in den Figuren 6 und 7 dargestellten Ausfuhrungsform sind zylindrisch ausgebildet und in den ebenfalls zylindrischen Aufnahmen 12 durch Klemmelemente gesichert. Diese können wie dargestellt als Klemmhülsen 13 am Meißelschaft 11 und/oder in der Aufnahme 12 angeordnet sein. Zum Lösen der Schneidelemente 3 sind in die Segmente 2 im Außenbereich jeder Aufnahme 12 Aussparungen 16 eingebracht, durch die ein Schulterbereich 14 der Schneidelemente 3 von einem geeigneten Werkzeug hintergriffen und das Schneidelement 3 herausgedrückt werden kann.In the embodiment shown in Figures 6 and 7, the releasable connection the cutting elements 3 with the segments 2 achieved in that the Cutting elements 3 are chisel-shaped with a chisel shaft 11, the engages in a corresponding receptacle 12 of segment 2. The chisel shafts 11 of the cutting elements 3 of the embodiment shown in FIGS. 6 and 7 are cylindrical and in the also cylindrical receptacles 12 secured by clamping elements. As shown, these can be used as clamping sleeves 13 on the chisel shaft 11 and / or in the receptacle 12. To the Release the cutting elements 3 are in the segments 2 in the outer area of each recording 12 recesses 16 are introduced through which a shoulder region 14 of the Cutting elements 3 are gripped by a suitable tool and that Cutting element 3 can be pushed out.

Weitere Möglichkeiten der lösbaren Verbindung zwischen den Schneidelementen 3 und den Schneidringen 1 sind möglich, beispielsweise die in Fig. 3 dargestellte Form mit konischen Meißelschäften 11 und entsprechend konischen Aufnahmen 12. Die so klemmend aufgenommenen Schneidelemente 3 können durch in den Schneidringen 1 entsprechend vorgesehene Bohrungen 15 zum Auswechseln herausgedrückt werden.Further possibilities of the detachable connection between the cutting elements 3 and the cutting rings 1 are possible, for example the one shown in FIG. 3 Shape with conical chisel shafts 11 and correspondingly conical receptacles 12. The cutting elements 3 so clamped can be inserted into the Cutting rings 1 corresponding bores 15 pressed out for replacement become.

Möglich ist auch, die Schneidelemente 3 in den Schneidring 1 einzuschrauben, wozu Meißelschaft 11 und Aufnahme 12 mit entsprechenden Gewinden zu versehen sind. Zur Sicherung können Meißelschaft 11 und Aufnahme 12 bei allen gewählten Verbindungsarten mit aufeinander abgestimmten Bohrungen für einen Sicherungsstift versehen sein. Diese Ausgestaltung ist auch als alleinige Verbindung bei zylindrischen Meißelschäften 11 und Aufnahmen 12 ohne Klemmelement möglich.It is also possible to screw the cutting elements 3 into the cutting ring 1, why chisel shaft 11 and receptacle 12 to be provided with appropriate threads are. For security purposes, chisel shank 11 and holder 12 can be used in all selected connection types with coordinated holes for one Locking pin. This configuration is also the only connection with cylindrical chisel shafts 11 and receptacles 12 without a clamping element possible.

Die Schneidringe 1 in der erfindungsgemäß segmentierten Ausführung können aus verschiedenen Materialien, beispielsweise Stahl, Stahlguß, Hartguß oder Hartmetall bestehen. Möglich ist auch eine Materialpaarung, wobei z.B. die Schneidringe 1 aus Stahl und die damit verbundenen Schneidelemente 3 aus Hartmetall gefertigt sind. Bei meißelförmigen Schneidelementen 3 können diese einheitlich z.B. aus Hartmetall bestehen oder sich aus verschiedenen Werkstoffen, beispielsweise einem Meißelschaft 11 aus Stahl und einem Meißelkopf aus Hartmetall zusammensetzen.The cutting rings 1 can be segmented according to the invention made of different materials, for example steel, cast steel, chilled cast iron or Tungsten carbide exist. A pairing of materials is also possible, e.g. the Cutting rings 1 made of steel and the associated cutting elements 3 Carbide are made. With chisel-shaped cutting elements 3, these can uniform e.g. consist of hard metal or of different materials, for example, a chisel shaft 11 made of steel and a chisel head made of hard metal put together.

Claims (11)

Rollenmeißel für Tunnelvortriebsmaschinen mit einem Rollengrundkörper (4) und zumindest einem Schneidring (1), dadurch gekennzeichnet, daß der Schneidring (1) aus mehreren einzelnen Segmenten (2) besteht, die auf dem Rollengrundkörper (4) separat auswechselbar angeordnet sind.Roller chisel for tunnel boring machines with a roller base body (4) and at least one cutting ring (1), characterized in that the cutting ring (1) consists of several individual segments (2) which are arranged separately and replaceably on the roller base body (4). Rollenmeißel nach Anspruch 1, dadurch gekennzeichnet, daß die Segmente (2) des Schneidringes (1) mittels einer Profilverbindung, z. B. einer Schwalbenschwanzführung und Paßfedern, auf dem Rollengrundkörper (4) lagebestimmt angeordnet sind.Roller chisel according to claim 1, characterized in that the segments (2) of the cutting ring (1) by means of a profile connection, for. B. a dovetail guide and feather keys on the roller base body (4) are arranged in a determined position. Rollenmeißel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Segmente (2) des Schneidringes (1) mittels schraubbarer Segmenthalterungen (6,7) mit dem Rollengrundkörper (4) kraftschlüssig und/oder formschlüssig verbunden sind.Roller chisel according to claim 1 or 2, characterized in that the segments (2) of the cutting ring (1) are non-positively and / or positively connected to the roller base body (4) by means of screwable segment holders (6, 7). Rollenmeißel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Segmente (2) des Schneidringes (1) mittels Spannmutter (10) mit dem Rollengrundkörper (4) verbunden sind.Roller chisel according to one of claims 1 to 3, characterized in that the segments (2) of the cutting ring (1) are connected to the roller base body (4) by means of a clamping nut (10). Rollenmeißel nach einem der Ansprüche 1 bis 4 gekennzeichnet durch Schneidringe (1) unterschiedlicher Durchmesser, die dem Rollenmeißel eine konische Gestalt geben. Roller chisel according to one of claims 1 to 4, characterized by cutting rings (1) of different diameters, which give the roller chisel a conical shape. Rollenmeißel nach einem der Ansprüche 1 bis 5 bei dem der Schneidring eine Mehrzahl von Schneidelementen (3) trägt, dadurch gekennzeichnet, daß die Schneidelemente (3) lösbar mit dem Schneidring (1) verbunden sind.Roller chisel according to one of claims 1 to 5, in which the cutting ring carries a plurality of cutting elements (3), characterized in that the cutting elements (3) are detachably connected to the cutting ring (1). Rollenmeißel nach Anspruch 6, dadurch gekennzeichnet, daß die Schneidelemente (3) als Meißel mit einem Meißelkopf und Meißelschaft (11) ausgebildet sind, wobei der Meißelschaft (11) in einer Aufnahme (12) des Schneidrings (1) gehalten ist.Roller chisel according to claim 6, characterized in that the cutting elements (3) are designed as chisels with a chisel head and chisel shank (11), the chisel shank (11) being held in a receptacle (12) of the cutting ring (1). Rollenmeißel nach Anspruch 7, dadurch gekennzeichnet, daß Meißelschaft (11) und Aufnahme (12) konisch ausgebildet sind.Roller chisel according to claim 7, characterized in that the chisel shaft (11) and receptacle (12) are conical. Rollenmeißel nach Anspruch 7, dadurch gekennzeichnet, daß Meißelschaft (11) und Aufnahme (12) mit aufeinander abgestimmten Gewinden versehen sind.Roller chisel according to claim 7, characterized in that the chisel shaft (11) and receptacle (12) are provided with threads which are matched to one another. Rollenmeißel nach Anspruch 7, dadurch gekennzeichnet, daß Meißelschaft (11) und Aufnahme (12) zylindrisch ausgebildet sind und der Meißelschaft (11) und/oder die Aufnahme (12) ein Klemmelement aufweist.Roller chisel according to claim 7, characterized in that the chisel shaft (11) and the receptacle (12) are cylindrical and the chisel shaft (11) and / or the receptacle (12) has a clamping element. Rollenmeißel nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß Meißelschaft (11) und Aufnahme (12) aufeinander abgestimmte Bohrungen für einen Sicherungsstift aufweisen.Roller chisel according to one of claims 7 to 10, characterized in that the chisel shaft (11) and receptacle (12) have mutually coordinated bores for a locking pin.
EP99108959A 1998-05-13 1999-05-06 Roller bit with segemented cutting rings for tunneling machines Withdrawn EP0957232A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19821404 1998-05-13
DE19821390 1998-05-13
DE1998121404 DE19821404C2 (en) 1998-05-13 1998-05-13 Roller chisels for tunnel boring machines
DE19821390A DE19821390A1 (en) 1998-05-13 1998-05-13 Roller chisel for tunnel boring machine

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EP0957232A1 true EP0957232A1 (en) 1999-11-17

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EP99108959A Withdrawn EP0957232A1 (en) 1998-05-13 1999-05-06 Roller bit with segemented cutting rings for tunneling machines

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US (1) US6343842B1 (en)
EP (1) EP0957232A1 (en)
JP (1) JPH11350879A (en)

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CN102953730A (en) * 2012-12-06 2013-03-06 河北天择重型机械有限公司 Cutting pick-adjustable shearer drum
CN115962783A (en) * 2023-03-16 2023-04-14 太原理工大学 Positioning method of cutting head of heading machine and heading machine

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CN102953730A (en) * 2012-12-06 2013-03-06 河北天择重型机械有限公司 Cutting pick-adjustable shearer drum
CN115962783A (en) * 2023-03-16 2023-04-14 太原理工大学 Positioning method of cutting head of heading machine and heading machine
CN115962783B (en) * 2023-03-16 2023-06-02 太原理工大学 Positioning method of cutting head of heading machine and heading machine

Also Published As

Publication number Publication date
JPH11350879A (en) 1999-12-21
US6343842B1 (en) 2002-02-05

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