EP0155540A1 - Apparatus working like an excavator for pushing pipes under the soil - Google Patents

Apparatus working like an excavator for pushing pipes under the soil Download PDF

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Publication number
EP0155540A1
EP0155540A1 EP85102008A EP85102008A EP0155540A1 EP 0155540 A1 EP0155540 A1 EP 0155540A1 EP 85102008 A EP85102008 A EP 85102008A EP 85102008 A EP85102008 A EP 85102008A EP 0155540 A1 EP0155540 A1 EP 0155540A1
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EP
European Patent Office
Prior art keywords
support tube
cutting ring
cutting
screw conveyor
drilling tool
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
EP85102008A
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German (de)
French (fr)
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EP0155540B1 (en
Inventor
Carl B. Bosse
Fritz Wehling
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.)
WICEMA BOHRTECHNIK GmbH
Original Assignee
Witte Bohrtechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Witte Bohrtechnik GmbH filed Critical Witte Bohrtechnik GmbH
Priority to AT85102008T priority Critical patent/ATE27034T1/en
Publication of EP0155540A1 publication Critical patent/EP0155540A1/en
Application granted granted Critical
Publication of EP0155540B1 publication Critical patent/EP0155540B1/en
Expired legal-status Critical Current

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    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means
    • E21B7/005—Drilling with mechanical conveying means with helical conveying means
    • 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
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/20—Drives for drilling, used in the borehole combined with surface drive

Definitions

  • the present invention relates to a device for working on the principle of soil removal for the underground pre-pressing of pipes for the production of an underground pipe jacking.
  • Such devices include a support pipe in which and in the product pipes to be laid coupled to the A b support pipe during the advance, a screw conveyor is mounted, the head of which bears a drilling tool.
  • the drilling tool drills the soil on the face of the tunneling and the drilled material is conveyed from the screw conveyor to the starting pit.
  • the support pipe is gradually pushed forwards from the starting pit - and the product pipes are gradually attached to the support pipe during the advance to form the pipe tour.
  • Devices working according to this principle usually work in the bore area of 300-500 mm. They can be uncontrolled devices, but they can also be controlled devices. In the latter case, the front area of the support tube is pivotally mounted on the support tube several times for the purpose of controlling the pre-pressing direction. This so-called control head is then assigned a control device which can be actuated from the starting pit.
  • the control device itself can consist, for example, of a device for generating a directional beam guided by the tube tour, a target in the front region of the support tube and a device for evaluating the target.
  • the drilling tool seizes, but on the other hand, since the screw conveyor may only work in one direction of rotation, it cannot be cut free by reversing the direction of rotation and there may be a risk that the stuck drilling tool together with the screw conveyor will now cause the support tube itself
  • the turning and rolling begins, which is particularly dangerous when there are not yet many product pipes attached or when the product pipe attachment, as is often the case with concrete pipes, does not include a coupling in the direction of rotation. Apart from the fact that such a twisting of the support tube can impair the accuracy of the bore, this makes target control altogether impossible, particularly in the case of controllable devices.
  • the target attached in the support tube must be perfectly fresh with regard to the screw conveyor and therefore migrates out of the directional beam when the support tube is rotated.
  • the present invention is therefore based on the object to provide a device of the generic type which ensures a correct and objective g enaues propelling the tubes, even in difficult, requiring high torques soil conditions.
  • the solution according to the invention consists of. Essence in that in the head end of the support tube, surrounding the drilling tool carried by the screw conveyor, a cutting ring provided with its own drive is rotatably mounted.
  • the high torques sometimes required for cutting the face no longer need to be brought forward over the entire, sometimes quite long conveyor track.
  • a substantial part of the required torques can rather be applied separately from the drive of the cutting ring.
  • High torques for a large area of the cutting ring working on the face can also be applied particularly reliably and without impairing the device and possibly its control, if, as provided in accordance with a preferred embodiment, the drive for the cutting ring is accommodated in the head region of the support tube. for which there is sufficient space available in the pipe diameter ranges in question.
  • the cutting ring with its own drive is also very advantageously independent in its direction of rotation from the predetermined one direction of rotation of the screw conveyor and thus of the drilling tool carried by the screw conveyor.
  • This independence offers numerous possibilities to improve the drilling process as a whole, to avoid seizing of the machining tools as a whole and thus in particular also to prevent rotating and rolling movements of the support tube when tools are stuck.
  • the resulting relative movement between the two tools leads to an easier, more powerful drilling of the working face and also contributes to the fact that in particular the drilling tool on the screw conveyor, which is virtually surrounded by the cutting ring, no longer seizes up.
  • the cutting ring is driven reversibly. If the cutting ring seizes up again in particularly difficult conditions, for example when working in the rock, you can use it a reversal of its drive direction to cut free.
  • the cutting ring also offers the opportunity to machine the working face over a large area.
  • the cutting edges on the cutting ring extend to the outer diameter of the support tube. This ensures that the entire cross-sectional area of the pipes to be driven is actually cut free and this is very important for driving the pipes through the press linkage in the case of soil conditions with embedded pieces of rock or at all for drilling in the rock.
  • the drawing shows a partial longitudinal section of a device according to the invention, showing the head region of the support tube and the screw conveyor provided with the drilling tool.
  • the device for underground pre-pressing of pipes which works according to the soil removal principle, contains a support pipe 1, the front region of interest here is shown in the drawing.
  • the front region of a screw conveyor 2 is arranged in the support tube 1 and is arranged in a cladding tube 3, which in turn is arranged in the support tube 1.
  • a first product tube is coupled and then the next product tube, etc., with appropriate advance.
  • the tube tour, including the support tube 1, is driven in the usual way from the starting pit with a press linkage.
  • the front region of the support tube 1 shown is articulated several times pivotably on the rest of the support tube and thus forms a control head which can be controlled precisely in the desired direction of advance via a control device and an actuating device.
  • a drilling tool is also attached for drilling the face, which can be driven to rotate in a predetermined direction by the rotation of the screw conveyor.
  • the torque required for the drilling tool 2 is applied by the drive of the screw conveyor 2 and transmitted via the screw conveyor train.
  • the screw conveyor 2 is composed in the usual way of individual pieces, which are coupled together depending on the length of the respective jacking.
  • a cutting ring 5 is now rotatably mounted, which is equipped with cutting edges 6 on the front side, the cutting edges 6 being fastened to the cutting ring 5 in a replaceable manner by means of screws 7.
  • the cutting ring 5 itself is fastened by means of screws 8 to an inner tooth body 9, which is rotatably supported by a roller bearing 10 in the head end of the support tube 1 and whose internal toothing is in engagement with the pinions 11, for example two hydraulic motors 12.
  • the hydraulic motors 12 are on flanges of the support tube 1 attached in the head area. The hydraulic motors are actuated and controlled by the starting pit via corresponding feed lines that are carried inside and outside of the tube tour and the support tube 1.
  • the cutting edges 6 of the cutting ring 5 are expediently designed in such a way that their teeth that cut on the face face extend to the outer diameter of the support tube 1.
  • This toothing is also expediently provided on the outer jacket of the cutting edges 6, so that, thanks to this configuration, the entire cross-sectional area of the product pipes to be pressed in and the supporting pipe 1 on the face face are cut free, and thus their pre-pressing can be carried out without problems even with rock pieces embedded in the ground or during drilling work in Rock is possible.
  • the cutting edges 6 are arranged concentrically at a distance from the drilling tool 4 on the screw conveyor 2. Further define a tapered down to the central longitudinal axis of the device inner Einlaufke g el 13.
  • This inlet cone 13 is composed of the cutting rim 5 on the inner kandbegrenzung away and is also here provided with a toothing.
  • the cutting ring 5 also has an inner and rearward-facing cladding tube connector 14 which surrounds the front end of the screw 2 and is supported and sealed in its rear region against a flange of the support tube 1.
  • the cutting ring 5 is also sealed against the outer ring of the roller bearing 10 via an annular seal 15.
  • the direction of rotation of the screw conveyor 2 is determined by the fact that it is their task to convey the soil drilled or cut by the drilling tool 4 and the cutting edges 6 of the cutting ring 5 from the working face to the starting pit.
  • the drilling tool 4 necessarily has this direction of rotation.
  • the drive for the cutting ring 5 together with cutting 6 is also designed as a reversing drive, so that should the cutting ring 5 still seize with the cutting edges 6 when drilling in the rock, a reversal of the direction of rotation is possible, which then immediately results in a clearing the cutting 6 leads.
  • this can also very reliably prevent the support tube 1 from twisting, performing uncontrolled rolling movements and thus losing its direction when the machining tools are stuck because they are seized, or the control unit becomes inoperable with a controllable pre-pressing device, for example by a this control device own and located in the support tube 1 eccentric target moves out of the directional beam acting on it.
  • a slight twisting of the support tube 1 which has already occurred at the start of the seizure is compensated for and reversed by reversing the direction of rotation of the cutting ring 5 with its cutting edges 6.

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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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)

Abstract

1. An apparatus which operates on the earth removal principle for pressing pipes forward underground, having a support tube (1) and a conveyor screw (2) which is arranged therein and which at the advance end carries a first boring tool (4), and a further cutting tool (5, 6) which is rotatably mounted on the support tube (1) and which concentrically surrounds the first boring tool (4) and which is provided with its own drive (12) independently of the conveyor screw (2), characterised in that the further cutting tool, in the form of a cutting ring (5, 6), forms with the first boring tool (4) and the corresponding end of the conveyor screw (2), an entry cone (13) over which the cutting teeth (6) of the cutting ring (5, 6) extend.

Description

Die vorliegende Erfindung betrifft eine nach dem Prinzip der Bodenentnahme arbeitende Einrichtung zum unterirdischen Vorpressen von Rohren zur Herstellung eines unterirdischen Rohrvortriebs. Derartige Einrichtungen beinhalten ein Abstützrohr, in dem sowie in den an das Abstützrohr im Laufe des Vortriebes angekuppelten zu verlegenden Produktrohren eine Förderschnecke gelagert ist, deren Kopf ein Bohrwerkzeug trägt.The present invention relates to a device for working on the principle of soil removal for the underground pre-pressing of pipes for the production of an underground pipe jacking. Such devices include a support pipe in which and in the product pipes to be laid coupled to the A b support pipe during the advance, a screw conveyor is mounted, the head of which bears a drilling tool.

Bei derartigen bekannten Einrichtung bohrt das Bohrwerkzeug das Erdreich an der Ortsbrust des Vortriebes auf und das aufgebohrte Material wird von der Förderschnecke zur Startgrube gefödert. Mit dem üblichen Preßgestänge wird das Abstützrohr nach und nach von der Startgrube aus vorgedrückt--und es werden an das Abstützrohr im Laufe des Vortriebes nach und nach die Produktenrohre zur Bildung der Rohrtour angehängt. Nach diesem Prinzip arbeitende Einrichtungen arbeiten üblicherweise im Bohrungsbereich von 300-500 mm. Es kann sich um ungesteuerte Einrichtungen handeln, aber auch um gesteuerte Einrichtungen. Bei letzteren ist der vordere Bereich des Abstützrohres zwecks Steuerung der Vorpreßrichtung mehrfach schwenkbeweglich am Abstützrohr im übrigen gelagert. Diesem sogenannten Steuerkopf ist dabei dann eine Steuereinrichtung zugeordnet, die von der Startgrube aus betätigt werden kann. Die Steuereinrichtung selbst kann beispielsweise aus einer Einrichtung zur Erzeugung eines durch die Rohrtour gelenkten Richtstrahles, einer Zielscheibe im vorderen Bereich des Abstützrohres und einer Einrichtung zur Auswertung der Zielscheibe bestehen.In such known device, the drilling tool drills the soil on the face of the tunneling and the drilled material is conveyed from the screw conveyor to the starting pit. With the usual press linkage, the support pipe is gradually pushed forwards from the starting pit - and the product pipes are gradually attached to the support pipe during the advance to form the pipe tour. Devices working according to this principle usually work in the bore area of 300-500 mm. They can be uncontrolled devices, but they can also be controlled devices. In the latter case, the front area of the support tube is pivotally mounted on the support tube several times for the purpose of controlling the pre-pressing direction. This so-called control head is then assigned a control device which can be actuated from the starting pit. The control device itself can consist, for example, of a device for generating a directional beam guided by the tube tour, a target in the front region of the support tube and a device for evaluating the target.

Bei den bekannten Einrichtungen der gattungsgemäßen Art treten Probleme dann auf, wenn in besonders festem, womöglich noch mit eingelagerten Felsstücken bestückten Erdreich gearbeitet werden muß. Hierbei ist es nämlich äußerst schwierig, die dann für das Aufbohren der Ortsbrust erforderlichen hohen Drehmomente über den nach entsprechend weitem Vortrieb beträchtlich langen gesamten Förderschneckenstrang nach vorne zu bringen, den ja systemimmanent Dimensionierungsgrenzen gesetzt sind. Ferner kann es geschehen, daß sich das Bohrwerkzeug festfrißt, es andererseits aber, da die Förderschnecke nur in einer Drehrichtung arbeiten darf, nicht durch Drehrichtungsumkehr zum Freischneiden gebracht werden kann und unter Umständen die Gefahr besteht, daß bei festsitzendem Bohrwerkzeug samt Förderschnecke nun das Abstützrohr selbst zu drehen und zu rollen beginnt, welche Gefahr besonders dann gegeben ist, wenn noch nicht viel Produktenrohre angehängt sind oder wenn die Anhängung der Produktenrohre, wie es beispielsweise bei Betonrohren häufig der Fall ist, keine Ankupplung in Verdrehrichtung beinhaltet. Abgesehen davon, daß ein solches Verdrehen des Abstützrohres die Zielgenauigkeit der Bohrung beeinträchtigen kann, wird insbesondere bei steuerbaren Einrichtungen hierdurch die Zielsteuerung insgesamt unmöglich. Die im Abstützrohr angebrachte Zielscheibe muß ja im Hinblick auf die Förderschnecke außerzenfrisch sitzen und wandert von daher bei einer Verdrehung des Abstützrohres aus dem Richtstrahl heraus.In the known devices of the generic type, problems arise when working in particularly solid, possibly still equipped with embedded rock fragments. It is extremely difficult to bring the high torques required for drilling out the face over the entire length of the conveyor screw chain, which is considerably long after a correspondingly large amount of propulsion, since the dimensioning limits are inherent in the system. Furthermore, it may happen that the drilling tool seizes, but on the other hand, since the screw conveyor may only work in one direction of rotation, it cannot be cut free by reversing the direction of rotation and there may be a risk that the stuck drilling tool together with the screw conveyor will now cause the support tube itself The turning and rolling begins, which is particularly dangerous when there are not yet many product pipes attached or when the product pipe attachment, as is often the case with concrete pipes, does not include a coupling in the direction of rotation. Apart from the fact that such a twisting of the support tube can impair the accuracy of the bore, this makes target control altogether impossible, particularly in the case of controllable devices. The target attached in the support tube must be perfectly fresh with regard to the screw conveyor and therefore migrates out of the directional beam when the support tube is rotated.

Der vorliegenden Erfindung liegt von daher die Aufgabe zugrunde, eine Einrichtung der gattungsgemäßen Art zu schaffen, die ein einwandfreies, zielgenaues Vortreiben der Rohre auch bei schwierigen, hohe Drehmomente erfordernden Bodenverhältnissen gewährleistet.The present invention is therefore based on the object to provide a device of the generic type which ensures a correct and objective g enaues propelling the tubes, even in difficult, requiring high torques soil conditions.

Die erfindungsgemäße Lösung besteht ihren. Wesen nach darin, daß im Kopfende des Abstützrohres, das von der Förderschnecke getragene Bohrwerkzeug abständig umgebend, ein mit einem eigenen Antrieb versehener Schneidkranz drehbar gelagert ist.The solution according to the invention consists of. Essence in that in the head end of the support tube, surrounding the drilling tool carried by the screw conveyor, a cutting ring provided with its own drive is rotatably mounted.

Die für das Schneiden der Ortsbrust manchmal erforderlichen hohen Drehmomente brauchen nun nicht mehr über den gesamten, manchmal recht langen Förderstreckenstrang nach vorn gebracht zu werden. Ein wesentlicher Teil der erforderlichen Drehmomente kann vielmehr gesondert dazu vom Antrieb des Schneidkranzes aufgebracht werden. Hohe Drehmomente für einen erhebliche Bereiche der Ortsbrust bearbeitenden Schneidkranz lassen sich auch dann besonders zuverlässig und ohne Beeinträchtigung der Einrichtung und gegebenenfalls ihrer Steuerungim übrigen dann aufbringen, wenn, wie gemäß einer bevorzuaten Ausführungsform vorgesehen, der Antrieb für den Schneidkranz im Kopfbereich des Abstützrohres untergebracht ist, wozu bei den hier in Betracht kommenden Rohrdurchrnesserbereichen ausreichend Raum zur Verfügung steht.The high torques sometimes required for cutting the face no longer need to be brought forward over the entire, sometimes quite long conveyor track. A substantial part of the required torques can rather be applied separately from the drive of the cutting ring. High torques for a large area of the cutting ring working on the face can also be applied particularly reliably and without impairing the device and possibly its control, if, as provided in accordance with a preferred embodiment, the drive for the cutting ring is accommodated in the head region of the support tube. for which there is sufficient space available in the pipe diameter ranges in question.

Der Schneidkranz mit seinem eigenen Antrieb ist ferner in sehr vorteilhafter Weise in seiner Drehrichtung unabhangig von der vorgegebenen einen Drehrichtung der Förderschnecke und damit des von der Förderschnecke getragenen Bohrwerkzeuges. Diese Unabhängigkeit ergibt zahlreiche Möglichkeiten, den Bohrvorgang insgesamt zu verbessern, ein Festfressen der Bearbeitungswerkzeuge insgesamt zu vermeiden und damit insbesondere auch Dreh- und Rollbewegungen des Abstützrohres bei festsitzenden Werkzeugen zu verhindern. Als besonders zweckmäßig hat es sich dabei erwiesen, den Schneidkranz gegenläufig zu dem von der Förderschnecke getragenen Bohrwerkzeug anzutreiben. Die hierdurch gebildete Relativbewegung zwischen beiden Werkzeugen führt zu einem erleichterten, leistungsstärkeren Aufbohren der Ortsbrust und trägt auch mit dazu bei, daß insbesondere das Bohrwerkzeug auf der Förderschnecke, das ja quasi von dem Schneidkranz umgeben ist, sich nicht mehr festfrißt.The cutting ring with its own drive is also very advantageously independent in its direction of rotation from the predetermined one direction of rotation of the screw conveyor and thus of the drilling tool carried by the screw conveyor. This independence offers numerous possibilities to improve the drilling process as a whole, to avoid seizing of the machining tools as a whole and thus in particular also to prevent rotating and rolling movements of the support tube when tools are stuck. It has proven to be particularly expedient to drive the cutting ring in the opposite direction to the drilling tool carried by the screw conveyor. The resulting relative movement between the two tools leads to an easier, more powerful drilling of the working face and also contributes to the fact that in particular the drilling tool on the screw conveyor, which is virtually surrounded by the cutting ring, no longer seizes up.

Gemäß einr weiteren zweckmäßigen Ausgestaltung ist der Schneidkranz reversierbar angetrieLen. Sollte es doch noch einmal bei besonders schwierigen Verhältnissen, beispielsweise beim Arbeiten im Felsen, zu einem Festfressen des Schneidkranzes kommen, kann man ihn durch eine Umsteuerung seiner Antriebsrichtung zum Freischneiden bringen.According to a further expedient embodiment, the cutting ring is driven reversibly. If the cutting ring seizes up again in particularly difficult conditions, for example when working in the rock, you can use it a reversal of its drive direction to cut free.

Der Schneidkranz bietet auch die Möglichkeit, die Ortsbrust großflächig zu bearbeiten. Dabei ist gemäß einer besonders zweckmäßigen Ausgestaltung vorzusehen, die Schneiden auf dem Schneidkranz sich bis hin zum Außendurchmesser des Abstützrohres erstrecken zu lassen. Dies gewährleistet, daß tatsächlich die gesamte Querschnittsfläche der vorzutreibenden Rohre freigeschnitten wird und dies ist für das Vortreiben der Rohre durch das Preßgestänge bei Bodenverhältnissen mit eingelagerten Felsstücken oder überhaupt bei Bohrungen im Fels sehr wichtig.The cutting ring also offers the opportunity to machine the working face over a large area. According to a particularly expedient embodiment, the cutting edges on the cutting ring extend to the outer diameter of the support tube. This ensures that the entire cross-sectional area of the pipes to be driven is actually cut free and this is very important for driving the pipes through the press linkage in the case of soil conditions with embedded pieces of rock or at all for drilling in the rock.

Weitere bevorzugte Ausgestaltungen einer derartigen Einrichtung ergeben sich aus den Unteransprüchen.Further preferred configurations of such a device result from the subclaims.

Ein Ausführungsbeispiel einer derartigen Einrichtung wird nachfolgend unter Bezugnahme auf die Zeichnung näher beschrieben.An embodiment of such a device is described below with reference to the drawing.

Die Zeichnung zeigt einen Teillängsschnitt einer Einrichtung gemäß der Erfindung mit Darstellung des Kopfbereiches des Abstützrohres und der mit dem Bohrwerkzeug versehenen Förderschnecke.The drawing shows a partial longitudinal section of a device according to the invention, showing the head region of the support tube and the screw conveyor provided with the drilling tool.

Die nach dem Bodenentnahmeprinzip arbeitende Einrichtung zum unterirdischen Vorpressen von Rohren beinhaltet ein Abstützrohr 1, dessen hier interessierender vorderer Bereich in der Zeichnung gezeigt ist. In dem Abstützrohr 1 ist der vordere Bereich einer Förderschnecke 2 angeordnet, die in einem Hüllrohr 3 angeordnet ist, das seinerseits in dem Abstützrohr 1 angeordnet ist. An das Abstützrohr 1 werden beim Vorpressen der Rohre in üblicher Weise zunächst ein erstes Produktenrohr angekuppelt und dann dieses bei entsprechendem Vortrieb das nächste Produktenrohr usw.. Das Vortreiben der Rohrtour einschließlich des Abstützrohres 1 erfolgt in der üblichen Weise von der Startgrube aus mit einem Preßgestänge. Falls es sich um eine steuerbare Einrichtung zum unterirdischen Vorpressen handelt, ist der dargestellte vordere Bereich des Abstützrohres 1 mehrfach schwenkbeweglich am Rest des Abstützrohres angelenkt und bildet damit einen Steuerkopf, der über eine Steuereinrichtung sowie eine Betätigungseinrichtung zielgenau in der gewünschten Vortriebsrichtung zu steuern ist.The device for underground pre-pressing of pipes, which works according to the soil removal principle, contains a support pipe 1, the front region of interest here is shown in the drawing. The front region of a screw conveyor 2 is arranged in the support tube 1 and is arranged in a cladding tube 3, which in turn is arranged in the support tube 1. Be on the support tube 1 when the tubes are pre-pressed in the usual way, a first product tube is coupled and then the next product tube, etc., with appropriate advance. The tube tour, including the support tube 1, is driven in the usual way from the starting pit with a press linkage. If it is a controllable device for underground pre-pressing, the front region of the support tube 1 shown is articulated several times pivotably on the rest of the support tube and thus forms a control head which can be controlled precisely in the desired direction of advance via a control device and an actuating device.

An dem Kopfende der Förderschnecke 2 ist ferner zum Auf bohren der Ortsbrust ein Bohrwerkzeug befestigt, das durch die Drehung der Förderschnecke 2 in einer vorgegebenen Richtung rotierend antreibbar ist. Das erforderliche-Drehmoment für das Bohrwerkzeug 2 wird vom Antrieb der Förderschnecke 2 aufgebracht und über den Förderschnekkenstrang übertragen. Die Förderschnecke 2 ist in der üblichen Weise aus einzelnen Stücken zusammengesetzt, die je nach Länge des jeweiligen Vortriebes entsprechend aneinandergekuppelt werden.At the head end of the screw conveyor 2, a drilling tool is also attached for drilling the face, which can be driven to rotate in a predetermined direction by the rotation of the screw conveyor. The torque required for the drilling tool 2 is applied by the drive of the screw conveyor 2 and transmitted via the screw conveyor train. The screw conveyor 2 is composed in the usual way of individual pieces, which are coupled together depending on the length of the respective jacking.

Im Kopfende des Abstützrohres 2 ist nun ein Schneidkranz 5 drehbar gelagert, der stirnseitig mit Schneiden 6 bestückt ist, wobei die Schneiden 6 mittels Schrauben 7 auswechselbar an dem Schneidkranz 5 befestigt sind. Der Schneidkranz 5 selbst ist mittels Schrauben 8 an einem Innenzahnkörper 9 befestigt, der über ein Wälzlager 10 im Kopfende des Abstützrohres 1 drehbar gelagert ist und dessen Innenverzahnung mit den Ritzeln 11 beispielsweise zweier Hydraulikmotore 12 in Eingriff steht.Die Hydraulikmotore 12 sind an Flanschen des Abstützrohrs 1 in dessen Kopfbereich befestigt. Die Hydraulikmotore werden über entsprechende Zuführungsleitungen, die innen und außen an der Rohrtour und dem Abstützrohr 1 mitgeführt werden, von der Startgrubeaus betätigt und gesteuert.In the head end of the support tube 2, a cutting ring 5 is now rotatably mounted, which is equipped with cutting edges 6 on the front side, the cutting edges 6 being fastened to the cutting ring 5 in a replaceable manner by means of screws 7. The cutting ring 5 itself is fastened by means of screws 8 to an inner tooth body 9, which is rotatably supported by a roller bearing 10 in the head end of the support tube 1 and whose internal toothing is in engagement with the pinions 11, for example two hydraulic motors 12. The hydraulic motors 12 are on flanges of the support tube 1 attached in the head area. The hydraulic motors are actuated and controlled by the starting pit via corresponding feed lines that are carried inside and outside of the tube tour and the support tube 1.

Die Schneiden 6 des Schneidkranzes 5 sind zweckmäßig so ausgestaltet, daß sich ihre an der Ortsbrust schneidende Zahnung bis hin zum Außendurchmesser des Abstützrohres 1 erstreckt. Zweckmäßig ist dabei diese Zahnung auch noch auf dem Außenmantel der Schneiden 6 vorgesehen, so daß dank dieser Ausgestaltung die gesamte Querschnittsfläche der einzupressenden Produktrohre und des Abstützrohres 1 an der Ortsbrust freigeschnitten werden und somit deren Vorpressen problemlos selbst bei im Erdreich eingelagerten Felsstücken oder bei Bohrarbeiten im Fels möglich ist.The cutting edges 6 of the cutting ring 5 are expediently designed in such a way that their teeth that cut on the face face extend to the outer diameter of the support tube 1. This toothing is also expediently provided on the outer jacket of the cutting edges 6, so that, thanks to this configuration, the entire cross-sectional area of the product pipes to be pressed in and the supporting pipe 1 on the face face are cut free, and thus their pre-pressing can be carried out without problems even with rock pieces embedded in the ground or during drilling work in Rock is possible.

Die Schneiden 6 sind konzentrisch abständig zu dem Bohrwerkzeug 4 an der Förderschnecke 2 angeordnet. Sie definieren ferner einen sich zur Mittellängsachse der Einrichtung hin verjüngenden inneren Einlaufkegel 13. Dieser Einlaufkegel 13 setzt sich an der inneren kandbegrenzung des Schneidkranzes 5 fort und ist auch hier noch mit einer Zahnung versehen. Der Schneidkranz 5 weist ferner einen das Vorderende der Schnecke 2 umgebenden inneren und nach hinten weisenden Hüllrohrstutzen 14 auf, der in seinem hinteren Bereich gegen einen Flansch des Abstützrohres 1 abgestützt und abgedichtet ist. Der Schneidkranz 5 ist ferner über eine Ringdichtung-15 gegen den Außenring des Wälzlagers 10 abgedichtet.The cutting edges 6 are arranged concentrically at a distance from the drilling tool 4 on the screw conveyor 2. Further define a tapered down to the central longitudinal axis of the device inner Einlaufke g el 13. This inlet cone 13 is composed of the cutting rim 5 on the inner kandbegrenzung away and is also here provided with a toothing. The cutting ring 5 also has an inner and rearward-facing cladding tube connector 14 which surrounds the front end of the screw 2 and is supported and sealed in its rear region against a flange of the support tube 1. The cutting ring 5 is also sealed against the outer ring of the roller bearing 10 via an annular seal 15.

Die DrEhrichtung der Förderschnecke 2 ist dadurch vorgegeben,daß es ihre Aufgabe ist, den von dem Bohrwerkzeug 4 und den Schneiden 6 des Schneidkranzes 5 aus der Ortsbrust gebohrten bzw. geschnittenen Boden zur Startgrube zu fördern. Das Bohrwerkzeug 4 hat zwangsnotwendig eben diese Drehrichtung. über die räumlich in unmittelbarer Nähe des Schneidkranzes 5 angeordneten Hydraulikmotore 12 können nicht nur hohe Drehmomente, und zwar unabhängig von der Förderschnecke 2 und dem Bohrwerkzeug 4, aufgebracht werden, darüberhinaus ist die Anordnung so getroffen, daß normalerweise der Schneidkranz 5 mit den Schneiden 6 gegenläufig zu dem Bohrwerkzeug 4 dreht. Hierdurch ergibt sich eine verstärkte Relativbewegung zwischen diesen EEarbeitungswerkzeugen, die das Aufreißen des Erdreiches an der Ortsbrut erleichtert und auch mit dazu beiträgt, daß sich die Werkzeuge nicht festfressen. lnsbesondere ein Festfressen des Bohrwerkzeuges 4 ist bei dieser Ausgestaltung praktisch nicht mehr zu erwarten. Der Antrieb für den Schneidkranz 5 samt Schneiden 6 ist darüberhinaus als Reversierantrieb ausgebildet, so daß, sollte sich insbesondere beim Bohren im Fels der Schneidkranz 5 mit den Schneiden 6 doch einmal noch festfressen, eine Umsteuerung der Drehrichtung möglich ist, was dann umgehend zu einem Freischneiden der Schneiden 6 führt. Insbesondere läßt sich hierdurch auch mit sehr großer Sicherheit vermeiden, daß bei stehenden, weil festgefressenen Bearbeitungswerkzeugen sich das Abstützrohr 1 verdreht, unkontrollierte Rollbeviegungen vollführt und damit seine Zielrichtung verliert, oder aber hierdurch bei einer steuerbaren Vorpresseinrichtung die Steuerung funktionsunfähig wird, etwa dadurch, daß eine dieser Steuereinrichtung zueigene und im Abstützrohr 1 außermittig angeordnete Zielscheibe aus dem sie beaufschlagenden Richtstrahl herauswandert. Eine bei Beginn oes Festfressens etwa bereits erfolgte kleine Verdrehung des Abstützrohres 1 wird durch die Umkehrung der Drehrichtung des Schneidkranzes 5 mit seinen Schneiden 6 wieder ausgeglichen und rückgängig gemacht.The direction of rotation of the screw conveyor 2 is determined by the fact that it is their task to convey the soil drilled or cut by the drilling tool 4 and the cutting edges 6 of the cutting ring 5 from the working face to the starting pit. The drilling tool 4 necessarily has this direction of rotation. On the spatially in the immediate vicinity of the cutting ring 5 arranged hydraulic motors 12 not only high torques can be applied, regardless of the screw conveyor 2 and the drilling tool 4, moreover, the arrangement is such that the cutting ring 5 with the cutting edges 6 normally runs in opposite directions to the drilling tool 4 rotates. This results in an increased relative motion between these E E in in g swerkzeugen which facilitates the tearing of the ground at the tunnel breeding and also contributes to the fact that the tools do not seize up. In particular, seizing of the drill Tool 4 is practically no longer to be expected in this embodiment. The drive for the cutting ring 5 together with cutting 6 is also designed as a reversing drive, so that should the cutting ring 5 still seize with the cutting edges 6 when drilling in the rock, a reversal of the direction of rotation is possible, which then immediately results in a clearing the cutting 6 leads. In particular, this can also very reliably prevent the support tube 1 from twisting, performing uncontrolled rolling movements and thus losing its direction when the machining tools are stuck because they are seized, or the control unit becomes inoperable with a controllable pre-pressing device, for example by a this control device own and located in the support tube 1 eccentric target moves out of the directional beam acting on it. A slight twisting of the support tube 1 which has already occurred at the start of the seizure is compensated for and reversed by reversing the direction of rotation of the cutting ring 5 with its cutting edges 6.

Claims (10)

1. Nach dem Prinzip der Bodenentnahme arbeitende Einrichtung zum unterirdischen Vorpressen von Rohren, mit einem Abstützrohr und einer darin angeordneten Förderschnecke, deren Kopf ein Bohrwerkzeug trägt, dadurch gekennzeichnet, daß im Kopfende des Abstützrohres (1), das von der Förderschnecke (2) getragene Bohrwerkzeug (4) abständig umgebend, ein mit einem eigenen Antrieb (12) versehener Schneidkranz (5, 6) drehbar gelagert ist.1. According to the principle of soil removal device for underground pre-pressing of pipes, with a support tube and a screw conveyor arranged therein, the head of which bears a drilling tool, characterized in that in the head end of the support tube (1), which is carried by the screw conveyor (2) Surrounding the drilling tool (4), a cutting ring (5, 6) provided with its own drive (12) is rotatably mounted. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Schneidkranz (5, 6) gegenläufig zur Drehrichtung des von der Förderschnecke (2) getragenen Bohrwerkzeuges (4) antreibbar ist.2. Device according to claim 1, characterized in that the cutting ring (5, 6) in the opposite direction to the direction of rotation of the screw conveyor (2) carried drilling tool (4) can be driven. 3. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schneidkranz (5, 6) reversierbar antreibbar ist.3. Device according to claim 1 or 2, characterized in that the cutting ring (5, 6) is reversibly driven. 4. Einrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schneidkranz (5) mit Schneiden (6) versehen ist, deren Zahnung sich hin bis zum Außendurchmesser des Abstützrohres (1) erstreckt.4. Device according to one or more of the preceding claims, characterized in that the cutting ring (5) is provided with cutting edges (6), the teeth of which extend up to the outer diameter of the support tube (1). 5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet, daß sich die Zahnungen der Schneiden (6) über deren Stirnflächen sowie deren Außenmantel und einen inneren, das Ende der Forderschnecke (2) und das dort befindliche Bohrwerkzeug (4) abständig umgebenden Einlaufkegel (13) erstrecken.5. Device according to claim 4, characterized in that the serrations of the cutting edges (6) over their end faces and their outer casing and an inner, the end of the auger (2) and the drilling tool located there (4) surrounding inlet cone (13) extend. 6. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß sich der Einlaufkegel (13) zur Mittellängsachse nach innen hin an dem Schneidkranz (5) fortsetzt.6. Device according to claim 5, characterized in that the inlet cone (13) continues towards the central longitudinal axis inwards on the cutting ring ( 5 ). 7. Einrichtung nach einem der Ansprüche 4 - 6, dadurch gekennzeichnet, daß die Schneiden (6) auswechselbar an dem Schneidkranz (5) befestigt sind.7. Device according to one of claims 4-6, characterized in that the cutting edges (6) are exchangeably attached to the cutting ring (5). 8. Einrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schneidkranz (5) einen rückwärtigen Hüllrohrstutzen (14) aufweist, der abgedichtet in dem Abstützrohr (1) gelagert ist und der das vordere Ende der Förderschnecke (2) umgibt.8. Device according to one or more of the preceding claims, characterized in that the cutting ring (5) has a rear cladding tube socket (14) which is sealed in the support tube (1) and which surrounds the front end of the screw conveyor (2). 9. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der eigene Antrieb des Schneidkranzes (5, 6) aus ein oder mehreren, im Kopfbereich des Abstützrohres (1) vorgesehenen Hydraulikmotoren (12) gebildet ist.9. Device according to claim 1, characterized in that the own drive of the cutting ring (5, 6) from one or more, in the head region of the support tube (1) provided hydraulic motors (12) is formed. 10. Einrichtung nach den Ansprüchen 1 und 9, dadurch gekennzeichnet, daß der Schneidkranz (5) an einem Innenzahnteil (9) befestigt ist, das mittels einem Wälzlager (10) im Kopfende des Abstützrohres (1) gelagert ist und dessen Innenverzahnung mit Ritzeln (11) in Eingriff steht, die durch im Abstützrohr (1) befestigte Hydraulikmotore (12) antreibbar sind.10. Device according to claims 1 and 9, characterized in that the cutting ring (5) is fixed to an inner tooth part (9) which is mounted by means of a roller bearing (10) in the head end of the support tube (1) and the internal toothing with pinions ( 11) is engaged, which can be driven by hydraulic motors (12) fastened in the support tube (1).
EP85102008A 1984-03-07 1985-02-23 Apparatus working like an excavator for pushing pipes under the soil Expired EP0155540B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85102008T ATE27034T1 (en) 1984-03-07 1985-02-23 DEVICE FOR UNDERGROUND PRESSING OF PIPES WORKING ACCORDING TO THE DRAWING PRINCIPLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3408246 1984-03-07
DE3408246A DE3408246C2 (en) 1984-03-07 1984-03-07 Jacking device for creating underground cavities using the pipe pre-pressing process

Publications (2)

Publication Number Publication Date
EP0155540A1 true EP0155540A1 (en) 1985-09-25
EP0155540B1 EP0155540B1 (en) 1987-05-06

Family

ID=6229743

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EP85102008A Expired EP0155540B1 (en) 1984-03-07 1985-02-23 Apparatus working like an excavator for pushing pipes under the soil

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Country Link
EP (1) EP0155540B1 (en)
AT (1) ATE27034T1 (en)
DE (2) DE3408246C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400921A2 (en) * 1989-05-30 1990-12-05 Weir Pumps Limited Drill bit assembly with concentric rotatable cutting elements and method of drilling
WO1998011323A1 (en) * 1996-09-09 1998-03-19 Tony Dimillo Tunnel boring machine
CN113153342A (en) * 2021-04-30 2021-07-23 山东凤志管道设备有限公司 Full-automatic control system of heading machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620026A1 (en) * 1986-03-15 1987-09-24 Meyer & John Gmbh & Co Process and apparatus for repairing sewerage systems or the like comprising concrete or stoneware pipes
DE4113208C2 (en) * 1991-04-23 1995-04-06 Herrenknecht Gmbh Shield boring machine

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Publication number Priority date Publication date Assignee Title
US2798707A (en) * 1953-06-18 1957-07-09 Charles W Kandle Rotary type tunneling machine
GB1186224A (en) * 1966-04-01 1970-04-02 Agroman Constr Method of and Machine for Enlarging Subterranean Boreholes.
GB2016554A (en) * 1978-03-18 1979-09-26 Iseki Kaihatsu Koki Tunnelling machine
GB2106161A (en) * 1981-09-18 1983-04-07 Hitachi Shipbuilding Eng Co Shield tunnelling machine
EP0100748A2 (en) * 1982-07-31 1984-02-15 Baumann & Burmeister GmbH & Co. KG Sinking device for small casings, the interior of which is inaccessible

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8232343U1 (en) * 1982-11-18 1983-05-11 Witte Bohrtechnik GmbH, 3060 Stadthagen DEVICE FOR CONTROLLABLE PRESSING OF TUBES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798707A (en) * 1953-06-18 1957-07-09 Charles W Kandle Rotary type tunneling machine
GB1186224A (en) * 1966-04-01 1970-04-02 Agroman Constr Method of and Machine for Enlarging Subterranean Boreholes.
GB2016554A (en) * 1978-03-18 1979-09-26 Iseki Kaihatsu Koki Tunnelling machine
GB2106161A (en) * 1981-09-18 1983-04-07 Hitachi Shipbuilding Eng Co Shield tunnelling machine
EP0100748A2 (en) * 1982-07-31 1984-02-15 Baumann & Burmeister GmbH & Co. KG Sinking device for small casings, the interior of which is inaccessible

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400921A2 (en) * 1989-05-30 1990-12-05 Weir Pumps Limited Drill bit assembly with concentric rotatable cutting elements and method of drilling
EP0400921A3 (en) * 1989-05-30 1991-09-11 Weir Pumps Limited Drill bit assembly with concentric rotatable cutting elements and method of drilling
WO1998011323A1 (en) * 1996-09-09 1998-03-19 Tony Dimillo Tunnel boring machine
CN113153342A (en) * 2021-04-30 2021-07-23 山东凤志管道设备有限公司 Full-automatic control system of heading machine
CN113153342B (en) * 2021-04-30 2024-04-30 山东凤志管道设备有限公司 Full-automatic control system of heading machine

Also Published As

Publication number Publication date
DE3408246C2 (en) 1986-07-31
EP0155540B1 (en) 1987-05-06
DE3408246A1 (en) 1985-09-19
DE3560162D1 (en) 1987-06-11
ATE27034T1 (en) 1987-05-15

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