EP1621722A1 - Steerable excavator - Google Patents

Steerable excavator Download PDF

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Publication number
EP1621722A1
EP1621722A1 EP05106859A EP05106859A EP1621722A1 EP 1621722 A1 EP1621722 A1 EP 1621722A1 EP 05106859 A EP05106859 A EP 05106859A EP 05106859 A EP05106859 A EP 05106859A EP 1621722 A1 EP1621722 A1 EP 1621722A1
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EP
European Patent Office
Prior art keywords
tube
steering tube
guide tube
guide
steering
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Granted
Application number
EP05106859A
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German (de)
French (fr)
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EP1621722B1 (en
Inventor
Walter Albrecht
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Individual
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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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • 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
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes

Definitions

  • the invention relates to a propulsion device according to the preamble of claim 1.
  • Such propulsion devices are often used in dense built-up area and make it possible to lay sewer pipes with only a few and very small-scale excavations. Since sewer pipes are often laid under traffic areas, one must try to keep the traffic delays low; This can be achieved by the use of mining methods in which after excavation of two pits such a propulsion device is inserted into a pit and in closed operation is driven against the horizontal only slightly inclined bore to the second pit, wherein after driving the hole usually also to be laid sewer pipes are introduced into such a bore. This results in only small-scale excavations of traffic areas and thus only minor obstacles to road traffic.
  • the aim of the invention is to propose a device of the type mentioned above, with which it is possible in a simple manner to control the press tube with the drill head and thereby ensure a largely accurate course of the bore.
  • the proposed measures it is possible to bring the steering tube relative to the guide tube in an angular position.
  • the steering tube essentially determines the direction of propulsion.
  • a change in the angular position between the guide and steering tube is possible by different pressurization of the two bellows body. If e.g. the lower bellows body is subjected to a higher pressure, so the steering tube is brought into an upward angular position to the guide tube, and the producible with the driving device bore will also tend to upward, as supported on the dome-shaped support surface of the steering tube with its front end portion or his lying in front of the support surface area slightly obliquely upwards.
  • FIG. 1 schematically shows a propulsion device according to the invention, but for reasons of better clarity, the milling head has been omitted.
  • a lug 2 is used with a smaller diameter and connected to the inside of the rest of the guide tube 1.
  • an annular space 9 between the guide tube 1 and the neck 2 is sealed by a sealing ring 3.
  • the approach 2 has at its front end to a support ring 4 and is rigidly connected thereto, wherein the support ring 4 is formed dome-shaped at its free end face, said end face forms a support surface 5.
  • a diametrically opposed sliding surface 6 of a ring 7 of a steering tube 8 is supported, wherein the diameter of the steering tube 8 corresponds to the diameter of the guide tube 1.
  • bellows body 10 In the annular space 9 between the steering tube 8 and the neck 2 of the guide tube 1 are two in a vertical diametrical plane opposite bellows body 10 is provided, these bellows body 10 are arranged in the end facing away from the support ring 4 of the steering tube 8.
  • bellows bodies 10 are expandable in the radial direction of the steering tube 8 and each have a valve 11 with a pressure source, not shown, e.g. a pressure hydraulic source, connected via lines 12.
  • a pressure source not shown, e.g. a pressure hydraulic source
  • these bellows body 10 can be acted upon with different pressures, causing them to expand differently and the steering tube 8 is brought into an angular position to the guide tube and thus the direction of further advancement of the guide tube 1 is changed accordingly.
  • vertical direction corrections of the direction of advance are possible.
  • the ring 7 on its free end face a cutting edge 13, through which results in a change in the deflection of the steering tube 8 relative to the guide tube 1, a very effective deflection of the guide tube 1.
  • each of these additional bellows body is connected via a respective valve with a pressure source.
  • a steering of the propulsion device can also take place in the horizontal direction.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (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)
  • Vehicle Body Suspensions (AREA)

Abstract

The device drives a rock borer or cutter through a guide or support tube (1) that is centered relative to the guide tube. The guide tube has a supporting ring (4) in its leading end region with a supporting surface (5) at its free end for a torque tube (8) with a matching slide surface (6) enclosing the guide tube with an annular space (9) in which two bellows bodies (10) are arranged and connected to pressure sources.

Description

Technisches GebietTechnical area

Die Erfindung bezieht sich auf eine Vortriebseinrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a propulsion device according to the preamble of claim 1.

Stand der TechnikState of the art

Solche Vortriebseinrichtungen werden häufig im dicht verbauten Gebiet eingesetzt und ermöglichen es, mit nur wenigen und sehr kleinräumigen Aufgrabungen Kanalrohre zu verlegen. Da Kanalrohre häufig unter Verkehrsflächen verlegt werden, muss man versuchen, die Verkehrsbehinderungen gering zu halten; dies kann man durch den Einsatz bergmännischer Verfahren erreichen, bei denen nach dem Ausheben zweier Gruben eine solche Vortriebseinrichtung in eine Grube eingesetzt wird und in geschlossener Arbeitsweise eine gegen die Horizontale nur wenig geneigten Bohrung zur zweiten Grube vorgetrieben wird, wobei nach dem Vortreiben der Bohrung meist auch die zu verlegenden Kanalrohre in eine solche Bohrung eingebracht werden. Dabei ergeben sich nur kleinräumige Aufgrabungen von Verkehrsflächen und damit nur geringe Behinderungen des Straßenverkehrs.Such propulsion devices are often used in dense built-up area and make it possible to lay sewer pipes with only a few and very small-scale excavations. Since sewer pipes are often laid under traffic areas, one must try to keep the traffic delays low; This can be achieved by the use of mining methods in which after excavation of two pits such a propulsion device is inserted into a pit and in closed operation is driven against the horizontal only slightly inclined bore to the second pit, wherein after driving the hole usually also to be laid sewer pipes are introduced into such a bore. This results in only small-scale excavations of traffic areas and thus only minor obstacles to road traffic.

Bei einer solchen bergmännischen Verlegemethode von Kanalrohren ergibt sich jedoch das Problem, dass es schwierig ist, die Bohrung, die sich meist über eine Strecke von ca. 100m von Grube zu Grube erstreckt, in der vorgesehenen Richtung, insbesondere aber mit der vorgesehenen Neigung, vorzutreiben. So haben die Bohr- oder Fräswerkzeuge die Tendenz, härteren Schichten auszuweichen und sich in weichere Bereiche des Bodens zu verlaufen. Dies ist insbesondere dann der Fall, wenn Bohrungen mit relativ kleinem Durchmesser vorzutreiben sind, da sich das Pressrohr (Führungsrohr) verbiegt.In such a mining method of laying sewer pipes, however, there is the problem that it is difficult, the hole, which extends over a distance of about 100m from pit to pit, in the intended direction, but in particular with the intended inclination propel , Thus, the drilling or milling tools have the tendency to avoid harder layers and to run in softer areas of the soil. This is particularly the case when holes are to drive with a relatively small diameter, since the press tube (guide tube) bends.

Offenbarung der ErfindungDisclosure of the invention Technische AufgabeTechnical task

Ziel der Erfindung ist es, eine Einrichtung der eingangs erwähnten Art vorzuschlagen, mit der es auf einfache Weise möglich ist, das Pressrohr mit dem Bohrkopf zu steuern und dadurch einen weitgehend genauen Verlauf der Bohrung sicherzustellen.The aim of the invention is to propose a device of the type mentioned above, with which it is possible in a simple manner to control the press tube with the drill head and thereby ensure a largely accurate course of the bore.

Technische LösungTechnical solution

Erfindungsgemäß wird dies bei einer Vortriebseinrichtung der eingangs erwähnten Art durch die kennzeichnenden Merkmale des Anspruchs 1 erreicht.According to the invention this is achieved in a propulsion device of the type mentioned by the characterizing features of claim 1.

Durch die vorgeschlagenen Maßnahmen ist es möglich, das Lenkrohr gegenüber dem Führungsrohr in eine Winkelstellung zu bringen. Dabei bestimmt das Lenkrohr im Wesentlichen die Richtung des Vortriebs. Eine Änderung der Winkelstellung zwischen Führungs- und Lenkrohr ist durch unterschiedliche Druckbeaufschlagung der beiden Balgkörper möglich. Wird z.B. der untere Balgkörper mit einem höheren Druck beaufschlagt, so wird das Lenkrohr in eine nach oben gerichtete Winkelstellung zum Führungsrohr gebracht, und die mit der Vortriebseinrichtung herstellbare Bohrung wird sich ebenfalls nach oben zu neigen, da das über die kalottenförmige Stützfläche abgestützte Lenkrohr mit seinem vorderen Endbereich bzw. seinem vor der Stützfläche liegenden Bereich leicht schräg nach oben zeigt.The proposed measures, it is possible to bring the steering tube relative to the guide tube in an angular position. In this case, the steering tube essentially determines the direction of propulsion. A change in the angular position between the guide and steering tube is possible by different pressurization of the two bellows body. If e.g. the lower bellows body is subjected to a higher pressure, so the steering tube is brought into an upward angular position to the guide tube, and the producible with the driving device bore will also tend to upward, as supported on the dome-shaped support surface of the steering tube with its front end portion or his lying in front of the support surface area slightly obliquely upwards.

Durch die Merkmale des Anspruchs 2 ist eine Beeinflussung der Richtung der vorzutreibenden Bohrung auch in einer horizontalen Ebene möglich, wodurch eine Bohrung sehr genau entsprechend dem vorgesehenen Verlauf hergestellt werden kann, auch wenn der Untergrund unterschiedlich harte Zonen aufweist.Due to the features of claim 2 influencing the direction of vorzutreibenden bore is also possible in a horizontal plane, whereby a bore can be made very accurately according to the intended course, even if the surface has different hard zones.

Durch die Maßnahmen des Anspruchs 3 wird sichergestellt, dass das Führungsrohr, das die hergestellte Bohrung auch abstützt, den vollen Querschnitt der hergestellten Bohrung ausfüllt.By the measures of claim 3 it is ensured that the Guide tube, which also supports the produced bore, fills the full cross section of the produced bore.

Zweckmäßig ist es, die Merkmale des Anspruchs 4 vorzusehen. Dadurch ist sichergestellt, dass sich das Lenkrohr in das durch die Bearbeitung des Bohr- oder Fräskopfes rissig gewordene bzw. aufgelockerte Gestein einschneidet und so das Führungsrohr leichter in die gewünschte Richtung drängt.It is expedient to provide the features of claim 4. This ensures that the steering tube cuts into the rock that has become cracked or loosened as a result of the machining of the drill or milling head and thus makes it easier for the guide tube to push in the desired direction.

Die Merkmale des Anspruchs 5 ermöglichen eine leichte und exakte Steuerung der Vortriebseinrichtung.The features of claim 5 allow easy and accurate control of the propulsion device.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Die Erfindung wird nun anhand der Fig. 1 näher erläutert, die schematisch eine erfindungsgemäße Vortriebseinrichtung zeigt, wobei jedoch aus Gründen einer besseren Übersichtlichkeit der Fräskopf weggelassen wurde.The invention will now be explained in more detail with reference to FIG. 1, which schematically shows a propulsion device according to the invention, but for reasons of better clarity, the milling head has been omitted.

Beste Ausführungsform der ErfindungBest embodiment of the invention

In einem Endbereich eines Führungsrohres 1 ist ein Ansatz 2 mit geringerem Durchmesser eingesetzt und mit der Innenseite des übrigen Führungsrohres 1 verbunden. Dabei ist ein Ringraum 9 zwischen dem Führungsrohr 1 und dem Ansatz 2 durch einen Dichtring 3 abgedichtet.In an end region of a guide tube 1, a lug 2 is used with a smaller diameter and connected to the inside of the rest of the guide tube 1. In this case, an annular space 9 between the guide tube 1 and the neck 2 is sealed by a sealing ring 3.

Der Ansatz 2 weist an seinem vorderen Ende einen Stützring 4 auf und ist mit diesem starr verbunden, wobei der Stützring 4 an seiner freien Stirnseite kalottenförmig ausgebildet ist, wobei diese Stirnseite eine Stützfläche 5 bildet. An dieser Stützfläche 5 ist eine gegengleiche Gleitfläche 6 eines Ringes 7 eines Lenkrohres 8 abgestützt, wobei der Durchmesser des Lenkrohres 8 dem Durchmesser des Führungsrohres 1 entspricht.The approach 2 has at its front end to a support ring 4 and is rigidly connected thereto, wherein the support ring 4 is formed dome-shaped at its free end face, said end face forms a support surface 5. At this support surface 5 a diametrically opposed sliding surface 6 of a ring 7 of a steering tube 8 is supported, wherein the diameter of the steering tube 8 corresponds to the diameter of the guide tube 1.

Im Ringraum 9 zwischen dem Lenkrohr 8 und dem Ansatz 2 des Führungsrohres 1 sind zwei in einer vertikalen Diametralebene gegenüberliegende Balgkörper 10 vorgesehen, wobei diese Balgkörper 10 in dem vom Stützring 4 abgekehrten Ende des Lenkrohres 8 angeordnet sind.In the annular space 9 between the steering tube 8 and the neck 2 of the guide tube 1 are two in a vertical diametrical plane opposite bellows body 10 is provided, these bellows body 10 are arranged in the end facing away from the support ring 4 of the steering tube 8.

Diese Balgkörper 10 sind in radialer Richtung des Lenkrohres 8 dehnbar und über je ein Ventil 11 mit einer nicht dargestellten Druckquelle, z.B. eine Druckhydraulik-Quelle, über Leitungen 12 verbunden.These bellows bodies 10 are expandable in the radial direction of the steering tube 8 and each have a valve 11 with a pressure source, not shown, e.g. a pressure hydraulic source, connected via lines 12.

Diese Balgkörper 10 können daher mit unterschiedlichen Drücken beaufschlagt werden, wodurch sich diese unterschiedlich ausdehnen und das Lenkrohr 8 in eine Winkelstellung zum Führungsrohr gebracht und damit die Richtung des weiteren Vortriebs des Führungsrohres 1 entsprechend verändert wird. Somit sind vertikale Richtungskorrekturen der Vortriebsrichtung möglich.Therefore, these bellows body 10 can be acted upon with different pressures, causing them to expand differently and the steering tube 8 is brought into an angular position to the guide tube and thus the direction of further advancement of the guide tube 1 is changed accordingly. Thus vertical direction corrections of the direction of advance are possible.

Bei dem dargestellten Ausführungsbeispiel weist der Ring 7 an seiner freien Stirnseite eine Schneide 13 auf, durch die sich bei einer Änderung der Auslenkung des Lenkrohres 8 gegenüber dem Führungsrohr 1 eine sehr effektive Ablenkung des Führungsrohres 1 ergibt.In the illustrated embodiment, the ring 7 on its free end face a cutting edge 13, through which results in a change in the deflection of the steering tube 8 relative to the guide tube 1, a very effective deflection of the guide tube 1.

Es ist auch möglich, zusätzlich zwei weitere Balgkörper in einer horizontalen Diametralebene im Ringraum 9 anzuordnen, wobei jeder dieser zusätzlichen Balgkörper über je ein Ventil mit einer Druckquelle verbindbar ist. Damit kann eine Lenkung der Vortriebseinrichtung auch in horizontaler Richtung erfolgen.It is also possible to additionally arrange two further bellows body in a horizontal diametral plane in the annular space 9, wherein each of these additional bellows body is connected via a respective valve with a pressure source. Thus, a steering of the propulsion device can also take place in the horizontal direction.

Claims (5)

Vortriebseinrichtung zum bergmännischen Herstellen von Bohrungen im Erdreich, insbesondere zur Verlegung von Kanalrohren in geschlossener Bauweise, bei der ein Gesteinsbohrer bzw. -fräser durch ein Führungs- bzw. Stützrohr (1) hindurch angetrieben und gegenüber dem Führungsrohr (1) zentriert gehalten ist, dadurch gekennzeichnet, dass das Führungsrohr (1) in seinem vorderen Endbereich einen Stützring (4) aufweist, der an seiner freien Stirnseite eine Stützfläche (5) in Form einer Kugelkalotte aufweist, an der ein mit einer gegengleichen Gleitfläche (6) versehenes Lenkrohr (8) abgestützt ist, das das Führungsrohr (1) mit einem Ringraum (9) umgibt, in dem zumindest zwei in einer Vertikalebene diametral einander gegenüberliegende, in radialer Richtung des Lenkrohres (8) dehnbare Balgkörper (10) angeordnet sind, die in dem vom Stützring (4) abgekehrten Endbereich des Lenkrohres (8) positioniert und mit je einer Druckquelle verbindbar sind.Propulsion means for mining making holes in the ground, in particular for laying sewer pipes in a closed construction, in which a rock drill is held or grinders driven by a guide or support pipe (1) therethrough and centered relative to the guide tube (1), characterized characterized in that the guide tube (1) has in its front end region a support ring (4) which has on its free end side a support surface (5) in the form of a spherical cap on which a steering tube (8) provided with a diametrically opposed sliding surface (6) is provided. is supported, which surrounds the guide tube (1) with an annular space (9) in which at least two in a vertical plane diametrically opposed, in the radial direction of the steering tube (8) stretchable bellows body (10) are arranged in the from the support ring ( 4) abgekehrten end portion of the steering tube (8) are positioned and connected to a respective pressure source. Vortriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zusätzlich zumindest zwei weitere, in radialer Richtung des Lenkrohres (8) dehnbare Balgkörper in einer horizontalen Durchmesserebene des Lenkrohres (8) angeordnet und mit je einer Druckquelle verbindbar sind.Propulsion device according to claim 1, characterized in that in addition at least two further, in the radial direction of the steering tube (8) stretchable bellows body in a horizontal diameter plane of the steering tube (8) are arranged and connectable to a respective pressure source. Vortriebseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Führungsrohr (1) im vom Lenkrohr (8) umgebenen Bereich einen kleineren Durchmesser aufweist, wobei der Außendurchmesser des Lenkrohres (8) dem Außendurchmesser des restlichen Teiles des Führungsrohres (1) entspricht.Propelling device according to claim 1 or 2, characterized in that the guide tube (1) in the area surrounded by the steering tube (8) has a smaller diameter, wherein the outer diameter of the steering tube (8) corresponds to the outer diameter of the remaining part of the guide tube (1). Vortriebseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Lenkrohr (8) an seiner freien Stirnseite einen Schneidring (13) aufweist.Propelling device according to one of claims 1 to 3, characterized in that the steering tube (8) has a cutting ring (13) on its free end face. Vortreibseinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jede mit einem Blagkörper (10) über Ventile (11) verbindbare Druckquelle mit einer Druckmesseinrichtung versehen ist.4. Vorschreibseinrichtung according to one of claims 1 to 4, characterized in that each with a Blagkörper (10) via valves (11) connectable pressure source is provided with a pressure measuring device.
EP05106859A 2004-07-26 2005-07-26 Steerable excavator Active EP1621722B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0127604A AT501933A1 (en) 2004-07-26 2004-07-26 BORING DEVICE

Publications (2)

Publication Number Publication Date
EP1621722A1 true EP1621722A1 (en) 2006-02-01
EP1621722B1 EP1621722B1 (en) 2008-06-25

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EP05106859A Active EP1621722B1 (en) 2004-07-26 2005-07-26 Steerable excavator

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EP (1) EP1621722B1 (en)
AT (2) AT501933A1 (en)
DE (1) DE502005004501D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011100966A2 (en) 2010-02-22 2011-08-25 Plum, Heinz Method and device for direction-controlled drilling

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152249A (en) * 1966-11-17 1969-05-14 Inst Gornogo Dela Sibirskogo O Improvements in or relating to a Self-Propelled Pneumatic device for Driving Holes in Ground
US3677354A (en) * 1970-12-03 1972-07-18 Alexandr Dmitrievich Kostylev Device for stabilizing the course of the tunnelling element
US4121673A (en) * 1976-11-10 1978-10-24 Martin Dee Cherrington Drilling and installation system
GB2172324A (en) * 1985-03-16 1986-09-17 Cambridge Radiation Tech Drilling apparatus
BE1001450A3 (en) * 1988-02-12 1989-10-31 Smet Marc Jozef Maria Tunnelling machine with jet nozzle - has remote-controlled units on head selectively varying body shape
DE3905648A1 (en) * 1989-02-24 1990-08-30 Brochier Fa Hans Pipe ram
US5813482A (en) * 1995-12-26 1998-09-29 Barbera; Leo J. Earth boring system and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177738B (en) * 1985-07-13 1988-08-03 Cambridge Radiation Tech Control of drilling courses in the drilling of bore holes
GB8830254D0 (en) * 1988-12-24 1989-02-22 Cambridge Radiation Tech Drilling apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152249A (en) * 1966-11-17 1969-05-14 Inst Gornogo Dela Sibirskogo O Improvements in or relating to a Self-Propelled Pneumatic device for Driving Holes in Ground
US3677354A (en) * 1970-12-03 1972-07-18 Alexandr Dmitrievich Kostylev Device for stabilizing the course of the tunnelling element
US4121673A (en) * 1976-11-10 1978-10-24 Martin Dee Cherrington Drilling and installation system
GB2172324A (en) * 1985-03-16 1986-09-17 Cambridge Radiation Tech Drilling apparatus
BE1001450A3 (en) * 1988-02-12 1989-10-31 Smet Marc Jozef Maria Tunnelling machine with jet nozzle - has remote-controlled units on head selectively varying body shape
DE3905648A1 (en) * 1989-02-24 1990-08-30 Brochier Fa Hans Pipe ram
US5813482A (en) * 1995-12-26 1998-09-29 Barbera; Leo J. Earth boring system and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011100966A2 (en) 2010-02-22 2011-08-25 Plum, Heinz Method and device for direction-controlled drilling

Also Published As

Publication number Publication date
AT501933A1 (en) 2006-12-15
ATE399250T1 (en) 2008-07-15
DE502005004501D1 (en) 2008-08-07
EP1621722B1 (en) 2008-06-25

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