EP1310600B1 - Drilling apparatus and method - Google Patents

Drilling apparatus and method Download PDF

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Publication number
EP1310600B1
EP1310600B1 EP02024209A EP02024209A EP1310600B1 EP 1310600 B1 EP1310600 B1 EP 1310600B1 EP 02024209 A EP02024209 A EP 02024209A EP 02024209 A EP02024209 A EP 02024209A EP 1310600 B1 EP1310600 B1 EP 1310600B1
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EP
European Patent Office
Prior art keywords
boring
linkage
casing tube
mounting frame
drilling
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.)
Expired - Lifetime
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EP02024209A
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German (de)
French (fr)
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EP1310600A1 (en
Inventor
Leonhard Dipl.-Ing. Weixler
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Bauer Maschinen GmbH
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Bauer Maschinen GmbH
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Publication of EP1310600A1 publication Critical patent/EP1310600A1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/18—Connecting or disconnecting drill bit and drilling pipe
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/027—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes
    • E21B7/028—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes the drilling apparatus being detachable from the vehicle, e.g. hand portable drills
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Definitions

  • the invention relates to a drilling device according to the preamble of claim 1 and a drilling method for creating a bore with a support tube according to the preamble of Claim 7.
  • a generic state of the art is based on the DE 27 34 185 C2.
  • An inner drill is inserted into the casing tube using a suspension cable.
  • the rotary drive Located in the cylindrical housing of the drill the rotary drive. Via a clamping device on the housing, the drill on the inside of the Cladding tube clamped close to the bottom of the borehole, so that the torque of the rotary drive is supported on the casing tube becomes.
  • a cased Bore is known from FR 15 09 586 A.
  • a auger is attached with a drill bucket, which is smaller in diameter than a surrounding one Has casing tube.
  • the drill bucket can by means of a clamping device on one guided on the drilling mast Sled to be clamped, using a Locking and unlocking mechanism of the drill bucket from the Drill pipe can be solved.
  • the rotary drive is also housed, which the auger over the linkage drives rotating.
  • a support tube Usually used a auger, the outer diameter adapted to the inside diameter of the support tube is.
  • a auger there is a special one Drilling rig with a vertical mast necessary, on which the auger is guided vertically and is at the same time rotatably driven. Since the vertical mast, which is usually on a mobile Mount is attached, can only be tilted a few degrees can, is the use of a auger in an uneven Terrain or a terrain with large differences in level problematic. If necessary, in such a First drop a horizontal platform on the support tube created for the drilling device with the auger become.
  • the drilling device with a auger not or at most after very lengthy device changes for the previous insertion of the support tube in the floor can be used.
  • the invention is therefore based on the object of specifying a drilling device and a drilling method which permit efficient drilling of a hole with a support tube.
  • the drilling device according to the invention can be suspended from a Crane are used, so that larger uneven terrain or greater level differences between the Support tube and the drilling device does not affect the Have to carry out the drilling process.
  • the rod of the drilling device is for effective drilling hollow and with at least two fluid lines Mistake.
  • One fluid line can be used to transport the Drill bits are used by the drilling tool.
  • the other Line is used to supply a fluid. On the one hand, this can be a fluid like water or air to help carry it away to support the cuttings.
  • the flush line can but also used to supply a curing suspension so that when pulling out the drilling device from the borehole with the curable suspension, in particular concrete can be filled.
  • the invention Drilling device with an extension frame on the top Edge of the support tube placed on and over this a connecting device releasably attached.
  • the connection device allows a quick release of the non-rotating Connection what together with the continuous suspension efficient creation of the drilling device on the crane allows a variety of holes.
  • the connecting device can have various positive connections or include non-positive locking devices.
  • the connecting device has hydraulic collets with which the Attachable frame can be clamped to an upper edge of the support tube is. Allow hydraulically operated collets quick clamping and releasing with high clamping forces.
  • first port or the second port have a swivel.
  • Rotary joint usually comprises two rotatable to each other and liquid-tight rotating flanges, of which one with the flushing line and the other with the stationary one Line is connected.
  • drilling tools for example a drilling bucket can be used.
  • the drilling tool is a full cut drill head with drill string, and that the drill string is hollow and has two lines, which with the first flush line and the second Flush line in the linkage can be connected.
  • Such one Full cut drill head is especially for machining a hard surface, for example a rock floor, suitable.
  • a bore can also be drilled into a larger one via the flush line Depth to be brought down.
  • different drilling tools can be attached so that for each layer of soil to be drilled the most suitable drilling tool can be used.
  • the drilling device suspended from a rope on a boom of a crane is that on the side facing the boom a first Traction rope is attached, which extends to the boom, and that on the other side a second pull rope is articulated, which is to the upper end of the boom extends.
  • the one hung on a crane boom Drilling device can thus from two opposite sides be acted upon by pulling ropes and winches. hereby can cause undesirable swaying of the drill can be counteracted and the drilling device can continue simply swiveled to the side of the crane boom and in be held in this pivoted position. In a Such pivoted position can, for example, the Crane via a second winch for positioning and insertion of the support tube can be used without the Drilling device would have to be released from the crane.
  • At least one flushing line is arranged in the hollow rod.
  • the linkage can be a double-walled according to the invention Linkage be formed, the annular Cavity between an inner core and the outer Rod wall forms the flushing line.
  • the other flush line can be on the outside or in a radially inner Cavity of the inner linkage arranged his.
  • the drilling method according to the invention is characterized in that that a previously described drilling device is used and that the drilling device at one Rope of a crane is suspended. This can be an efficient Create a hole with the above Benefits are carried out.
  • a preferred embodiment of the method according to the invention is a first hole inside the support tube is created that a drill head with drill string separated from the drilling device into the support tube is used and that then the drilling device is firmly connected to the drill string via the rods.
  • the first hole can be made with a different drilling tool, like a drill bucket or a auger, be introduced.
  • the drilling tool can be Drilling device attached and with this for making the first hole in, for example be used on a loose surface.
  • This arises there is a free space in the support tube for insertion and adjusting a drill head with drill string used can be.
  • This way is different Drilling tools an efficient drilling progress possible, being a full cut drill head with drill string in particular useful for working on a hard surface is.
  • This method is further developed according to the invention in that that the drill head with the drill string before fastening on the linkage by means of a holding device in the support tube is held in a connecting position, that after the fastening, the holding device is released, while the drill continues to hang on the rope and that afterwards the stacking frame rotates with the support tube is connected. This allows a safe and at the same time fast connection of the drill string of the drill head with the drill string.
  • a particularly efficient fixation of the drill string inside of the support tube for connecting to the linkage achieved according to the invention in that the holding device at least one slide radially movable to the support tube with a holding fork in which a flange of the drill string lies in the holding position.
  • a holding fork in which a flange of the drill string lies in the holding position.
  • the fork width of the holding fork corresponds to the outside diameter of the drill string, whereby the larger diameter flange or collar of the drill string rests on the holding fork (s) and so in a desired stop position is arranged. So it is easy connection to the drill string possible outside the support tube.
  • the pressure on the drilling tool can a telescopic linkage via corresponding hydraulic pressure cylinders be applied.
  • the drill rods when drilling guided axially freely in the stack frame is so that the weight of the rod on the drilling tool suppressed.
  • the drill string can also be used Load weights must be provided, so that a sufficient Pressure for rapid drilling progress on the drilling tool can be exercised.
  • a preferred embodiment of the drilling method according to the invention further consists in the fact that when drilling over the first purge line purge air is supplied while via the second flushing line drill cuttings with liquid and the flushing air be dissipated. Using this procedure is a special one efficient removal of the cuttings possible, so that rapid drilling progress is achieved.
  • To create Foundation piles are already two support tubes 46 in one loose soil layer 3 rammed at the bottom of the water.
  • a drilling tool is inserted into the support tube 46.
  • the Drilling tool which consists of a full-cut drill head 18 with a tubular drill string 19, is by means of of the rope 5 up to a defined height of a larger diameter Collar 21 lowered on the drill string 19.
  • the drilling tool is in this position by means of a holding device 42 fixed.
  • two opposite Carriage 44 which on an annular platform 43 movably supported at the upper end of the support tube 46 are delivered radially to the drill string 19.
  • Holding forks not shown, below the larger diameter Collar 21 to lie so that the collar 21 on the holding forks of the two carriages 44 in the holding position rests.
  • the rope 5 is released from the drilling tool and the Crane 4 can use the drilling device provided on pontoon 2 Record 10.
  • the drilling device 10 is by means of of the crane 4 via the drilling tool fixed in the support tube 46 aligned, which is shown in Fig. 2. Subsequently is on a crane suspension 14 on the rope 5th located drilling device 10 on the upper end of the drill string 19 lowered and rotatably connected to this. If necessary, between the drilling device 10 and the drill string 19 still used additional drill string elements to achieve a desired drilling depth.
  • the drill head 18 with the drill string 19 is on a Mount frame 20 arranged hydraulic drive 16 in rotation offset, the drill head 18 as shown 3 a bottom 3 within the support tube 46 removed and by further lowering a bore 40 into the rocky bottom layer 7.
  • the hole When the hole is completed, it can be used to form a Foundation pile with concrete and, if necessary, with reinforcing steels be provided.
  • the drilling device 10 can then by means of the crane 4 in a simple manner next support tube 46 are transported without a complex Modification and readjustment of pontoon 2 necessary would.
  • a drilling device 10 which is equipped with a drilling bucket 11 is provided as a drilling tool in the previously described Way over a rope 5 on a boom 6 of a crane 4th suspended.
  • a second pull rope 32 is on the boom 6 opposite side of the drilling device 10 articulated. The second pull cable 32 extends from the drilling device 10 to the boom tip 8. This is with a deflection roller provided, which extends beyond the rope 5 from Boom 6 extends away by a defined amount. By corresponding tension of the second pull cable 32 and first pull rope 31 can cause an undesirable pendulum movement the drilling device 10 are counteracted.

Abstract

The earth drill has a drill bit mounted on the lower end of a shaft (12) suspended from a crane (14) cable (5). The shaft is driven by a rotary drive (16) via a coupling. The shaft is hollow with two flushing pipes (26,28) and is mounted in a support frame (20) for rotation and axial movement, with the drive mounted on the frame. <??>Claims include a drilling method using the drill

Description

Die Erfindung betrifft eine Bohrvorrichtung gemäß dem Oberbegriff des Anspruchs 1 und ein Bohrverfahren zum Erstellen einer Bohrung mit einem Stützrohr gemäß dem Oberbegriff des Anspruchs 7.The invention relates to a drilling device according to the preamble of claim 1 and a drilling method for creating a bore with a support tube according to the preamble of Claim 7.

Ein gattungsgemäßer Stand der Technik geht aus der DE 27 34 185 C2 hervor. In ein im Boden angeordnetes Mantelrohr wird über ein Tragkabel ein Innenbohrgerät eingelassen. In dem zylindrischen Gehäuse des Bohrgerätes befindet sich der Drehantrieb. Über eine Klemmvorrichtung am Gehäuse wird das Bohrgerät an der Innenseites des Mantelrohres nahe am Bohrlochgrund festgeklemmt, so dass das Drehmoment des Drehantriebes an dem Mantelrohr abgestützt wird.A generic state of the art is based on the DE 27 34 185 C2. In one arranged in the floor An inner drill is inserted into the casing tube using a suspension cable. Located in the cylindrical housing of the drill the rotary drive. Via a clamping device on the housing, the drill on the inside of the Cladding tube clamped close to the bottom of the borehole, so that the torque of the rotary drive is supported on the casing tube becomes.

Ein weiteres Verfahren zur Herstellung einer verrohrten Bohrung ist aus der FR 15 09 586 A bekannt. An einem Gestänge ist eine Bohrschnecke mit einem Bohreimer befestigt, welcher einen kleineren Durchmesser als ein umgebendes Mantelrohr hat. Beim Niederbringen der Bohrung fördert die Bohrschnecke das Bodenmaterial in den Bohreimer. Wenn dieser gefüllt ist, wird der Bohreimer zusammen mit der Bohrschnecke aus dem Bohrloch gezogen. Der Bohreimer kann mittels einer Spanneinrichtung an einem am Bohrmast geführten Schlitten festgeklemmt werden, wobei über einen Ver- und Entriegelungsmechanismus der Bohreimer von dem Bohrgestänge gelöst werden kann. An dem am Bohrmast geführten Schlitten ist auch der Drehantrieb untergebracht, welcher die Bohrschnecke über das Gestänge drehend antreibt.Another method of making a cased Bore is known from FR 15 09 586 A. On a rod a auger is attached with a drill bucket, which is smaller in diameter than a surrounding one Has casing tube. When drilling the hole promotes Auger the soil material in the drill bucket. If this one is filled, the drilling bucket is put together with the Auger pulled out of the borehole. The drill bucket can by means of a clamping device on one guided on the drilling mast Sled to be clamped, using a Locking and unlocking mechanism of the drill bucket from the Drill pipe can be solved. On the one on the drilling mast guided slide, the rotary drive is also housed, which the auger over the linkage drives rotating.

In Bieske, Handbuch des Brunnenbaus, Band 1, Seiten 88, 89, Berlin 1956 wird ein Spülbohrverfahren in einem unverrohrten Bohrloch beschrieben.In Bieske, Handbuch der Brunnenbau, Volume 1, pages 88, 89, Berlin 1956 a flush drilling method in an uncased Borehole described.

Bei der Erstellung von Gründungspfählen für Bauwerksgründungen ist es weiter bekannt, zunächst ein Stützrohr in den Boden, beispielsweise mittels Ramme oder einem Vibrationsbär einzubringen. Der Boden innerhalb des Stützrohres kann dann mittels einer Bohrvorrichtung entfernt werden. Dies ist vor allem bei einem relativ lockeren Boden zweckmäßig, da durch das Stützrohr das Einbrechen der Bohrungswände verhindert wird.When creating foundation piles for building foundations it is further known, initially a support tube into the ground, for example using a ram or a Bring vibrating bear. The floor inside the support tube can then be removed using a drilling device become. This is especially the case with a relatively loose soil expedient, because of the collapse of the bore walls through the support tube is prevented.

Zum Entfernen des Bodens innerhalb eines Stützrohres wird üblicherweise eine Bohrschnecke verwendet, dessen Außendurchmesser auf den Innendurchmesser des Stützrohres angepasst ist. Beim Einsatz einer Bohrschnecke ist eine spezielle Bohrvorrichtung mit einem vertikalen Mast notwendig, an welchem die Bohrschnecke vertikal verschiebbar geführt und gleichzeitig drehend antreibbar gehaltert ist. Da der vertikale Mast, welcher üblicherweise an einer fahrbaren Lafette angebracht ist, nur um wenige Grad verkippt werden kann, ist der Einsatz einer Bohrschnecke in einem unebenen Gelände oder einem Gelände mit großen Niveauunterschieden problematisch. Gegebenenfalls muss in einem solchen Fall zunächst eine horizontale Plattform an dem Stützrohr für die Bohrvorrichtung mit der Bohrschnecke geschaffen werden. To remove the soil inside a support tube Usually used a auger, the outer diameter adapted to the inside diameter of the support tube is. When using a auger there is a special one Drilling rig with a vertical mast necessary, on which the auger is guided vertically and is at the same time rotatably driven. Since the vertical mast, which is usually on a mobile Mount is attached, can only be tilted a few degrees can, is the use of a auger in an uneven Terrain or a terrain with large differences in level problematic. If necessary, in such a First drop a horizontal platform on the support tube created for the drilling device with the auger become.

Weiterhin kann die Bohrvorrichtung mit einer Bohrschnecke nicht oder allenfalls nach sehr langwierigen Geräteveränderungen zum vorausgehenden Einbringen des Stützrohres in den Boden eingesetzt werden.Furthermore, the drilling device with a auger not or at most after very lengthy device changes for the previous insertion of the support tube in the floor can be used.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Bohrvorrichtung und ein Bohrverfahren anzugeben, welche ein effizientes Erstellen einer Bohrung mit einem Stützrohr erlauben.The invention is therefore based on the object of specifying a drilling device and a drilling method which permit efficient drilling of a hole with a support tube.

Die Aufgabe wird erfindungsgemäß mit einer Bohrvorrichtung mit den Merkmalen des Anspruchs 1 bzw. mit einem Bohrverfahren mit den Merkmalen des Anspruchs 7 gelöst. Bevorzugte Ausführungen der Erfindung sind in den jeweils abhängigen Ansprüchen angegeben.The object is achieved with a drilling device with the features of claim 1 or with a drilling method solved with the features of claim 7. preferred Embodiments of the invention are in the dependent Claims specified.

Die erfindungsgemäße Bohrvorrichtung ist versehen mit

  • einem Gestänge mit einer Kranaufhängung an seinem oberen Ende,
  • einem Bohrwerkzeug, welches an einem unteren Ende des Gestänges befestigbar ist,
  • einem Aufsatzrahmen, in welchem das Gestänge drehbar und axial verschiebbar gehalten ist und welcher zum Aufsetzen auf das Stützrohr ausgebildet ist,
  • einem Antrieb, welcher auf dem Aufsatzrahmen angeordnet ist und zum drehenden Antreiben des Gestänges ausgebildet ist, und
  • einer Verbindungseinrichtung zum Herstellen einer drehfesten Verbindung zwischen dem Stützrohr und dem Aufsatzrahmen, wobei
  • das Gestänge hohl ausgebildet ist und eine erste Spülleitung und eine zweite Spülleitung aufweist und
  • im Bereich des oberen Endes des Gestänges ein erster Anschluss zur Zuführung eines Fluides in die erste Spülleitung und ein zweiter Anschluss vorgesehen sind, welcher zur Abführung des Bohrkleins über die zweite Spülleitung ausgebildet ist.
The drilling device according to the invention is provided with
  • a linkage with a crane suspension at its upper end,
  • a drilling tool which can be attached to a lower end of the rod,
  • an attachment frame in which the linkage is rotatably and axially displaceable and which is designed to be placed on the support tube,
  • a drive which is arranged on the attachment frame and is designed for rotatingly driving the linkage, and
  • a connecting device for establishing a rotationally fixed connection between the support tube and the top frame, wherein
  • the linkage is hollow and has a first flushing line and a second flushing line and
  • A first connection for supplying a fluid into the first flushing line and a second connection are provided in the area of the upper end of the rod and are designed to discharge the cuttings via the second flushing line.

Die erfindungsgemäße Bohrvorrichtung kann aufgehängt an einem Kran eingesetzt werden, so dass größere Geländeunebenheiten oder größere Niveauunterschiede zwischen dem Stützrohr und der Bohrvorrichtung keinen Einfluss auf die Durchführung des Bohrverfahrens haben. Insbesondere richtet sich die an einem Kranseil aufgehängte Bohrvorrichtung von alleine vertikal aus, so dass aufwändige Justierarbeiten für ein vertikales Bohren entfallen.The drilling device according to the invention can be suspended from a Crane are used, so that larger uneven terrain or greater level differences between the Support tube and the drilling device does not affect the Have to carry out the drilling process. In particular judges the drilling device suspended on a crane rope by itself vertically, so that complex adjustment work for vertical drilling.

Für ein effektives Bohren ist das Gestänge der Bohrvorrichtung hohl ausgebildet und mit zumindest zwei Fluidleitungen versehen. Die eine Fluidleitung kann zum Transport des Bohrkleins vom Bohrwerkzeug eingesetzt werden. Die andere Leitung dient zur Zuführung eines Fluides. Dies kann einerseits ein Fluid wie Wasser oder Luft sein, um den Abtransport des Bohrkleins zu unterstützen. Die Spülleitung kann aber auch zur Zuführung einer aushärtenden Suspension eingesetzt werden, so dass beim Herausziehen der Bohrvorrichtung aus der Bohrung diese mit der aushärtbaren Suspension, insbesondere Beton aufgefüllt werden kann. Um trotz der Kranaufhängung eine zuverlässige Drehmomentübertragung auf das Bohrwerkzeug sicherzustellen, wird die erfindungsgemäße Bohrvorrichtung mit einem Aufsatzrahmen auf den oberen Rand des Stützrohres aufgesetzt und an diesem über eine Verbindungseinrichtung lösbar befestigt. Die Verbindungseinrichtung erlaubt ein schnelles Lösen der drehfesten Verbindung, was zusammen mit der kontinuierlichen Aufhängung der Bohrvorrichtung an dem Kran ein effizientes Erstellen einer Vielzahl von Bohrungen erlaubt. The rod of the drilling device is for effective drilling hollow and with at least two fluid lines Mistake. One fluid line can be used to transport the Drill bits are used by the drilling tool. The other Line is used to supply a fluid. On the one hand, this can be a fluid like water or air to help carry it away to support the cuttings. The flush line can but also used to supply a curing suspension so that when pulling out the drilling device from the borehole with the curable suspension, in particular concrete can be filled. To despite reliable torque transmission to the crane suspension to ensure the drilling tool, the invention Drilling device with an extension frame on the top Edge of the support tube placed on and over this a connecting device releasably attached. The connection device allows a quick release of the non-rotating Connection what together with the continuous suspension efficient creation of the drilling device on the crane allows a variety of holes.

Die Verbindungseinrichtung kann verschiedene formschlüssige oder kraftschlüssige Verriegelungseinrichtungen umfassen. Erfindungsgemäß ist es bevorzugt, dass die Verbindungseinrichtung hydraulische Spannzangen aufweist, mit welchen der Aufsatzrahmen an einem oberen Rand des Stützrohres festklemmbar ist. Hydraulisch betätigbare Spannzangen erlauben ein schnelles Spannen und Lösen bei hohen Spannkräften.The connecting device can have various positive connections or include non-positive locking devices. According to the invention, it is preferred that the connecting device has hydraulic collets with which the Attachable frame can be clamped to an upper edge of the support tube is. Allow hydraulically operated collets quick clamping and releasing with high clamping forces.

Eine weitere bevorzugte Ausführungsform der Erfindung besteht darin, dass der erste Anschluss oder der zweite Anschluss ein Drehgelenk aufweisen. Hiermit können die sich mit dem Gestänge drehenden Spülleitungen mit stationären Einrichtungen, insbesondere Fluidreservoiren, außerhalb des Bohrloches zuverlässig verbunden werden. Ein derartiges Drehgelenk umfasst in der Regel zwei zueinander drehbare und flüssigkeitsdicht angeordnete Drehflansche, von denen einer mit der Spülleitung und der andere mit der stationären Leitung verbunden ist.Another preferred embodiment of the invention exists in that the first port or the second port have a swivel. With this you can with the boom rotating flush lines with stationary Facilities, especially fluid reservoirs, outside the Well connected reliably. Such a thing Rotary joint usually comprises two rotatable to each other and liquid-tight rotating flanges, of which one with the flushing line and the other with the stationary one Line is connected.

Als Bohrwerkzeuge können verschiedenste Einrichtungen, beispielsweise ein Bohreimer eingesetzt werden. Nach der Erfindung ist es besonders vorteilhaft, dass das Bohrwerkzeug ein Vollschnitt-Bohrkopf mit Bohrstrang ist, und dass der Bohrstrang hohl ausgebildet ist und zwei Leitungen aufweist, welche mit der ersten Spülleitung und der zweiten Spülleitung in dem Gestänge verbindbar sind. Ein derartiger Vollschnitt-Bohrkopf ist insbesondere zur Bearbeitung eines harten Untergrundes, beispielsweise eines Felsbodens, geeignet. In Kombination mit der Abführung des Bohrkleins über die Spülleitung kann eine Bohrung auch in eine größere Tiefe niedergebracht werden. An der erfindungsgemäßen Bohrvorrichtung können jedoch verschiedene Bohrwerkzeuge angebracht werden, so dass für jede zu bohrende Bodenschicht das geeignetste Bohrwerkzeug eingesetzt werden kann. A wide variety of devices can be used as drilling tools, for example a drilling bucket can be used. According to the invention it is particularly advantageous that the drilling tool is a full cut drill head with drill string, and that the drill string is hollow and has two lines, which with the first flush line and the second Flush line in the linkage can be connected. Such one Full cut drill head is especially for machining a hard surface, for example a rock floor, suitable. In combination with the removal of the cuttings A bore can also be drilled into a larger one via the flush line Depth to be brought down. On the drilling device according to the invention however, different drilling tools can be attached so that for each layer of soil to be drilled the most suitable drilling tool can be used.

Weiter ist es erfindungsgemäß, dass die Bohrvorrichtung über ein Seil an einem Ausleger eines Kranes aufgehängt ist, dass auf der dem Ausleger zugewandten Seite ein erstes Zugseil befestigt ist, welches sich zum Ausleger erstreckt, und dass auf der anderen Seite ein zweites Zugseil angelenkt ist, welches sich zum oberen Ende des Auslegers erstreckt. Die an einem Kranausleger aufgehängte Bohrvorrichtung kann so von zwei gegenüberliegenden Seiten durch Zugseile und Winden beaufschlagt werden. Hierdurch kann einem unerwünschten Pendeln der Bohrvorrichtung entgegengewirkt werden und die Bohrvorrichtung kann weiterhin einfach zur Seite des Kranauslegers verschwenkt und in dieser ausgeschwenkten Position gehalten werden. In einer derartigen ausgeschwenkten Position kann beispielsweise der Kran über eine zweite Seilwinde zum Positionieren und Einbringen des Stützrohres eingesetzt werden, ohne dass die Bohrvorrichtung hierbei von dem Kran gelöst werden müsste.It is also according to the invention that the drilling device suspended from a rope on a boom of a crane is that on the side facing the boom a first Traction rope is attached, which extends to the boom, and that on the other side a second pull rope is articulated, which is to the upper end of the boom extends. The one hung on a crane boom Drilling device can thus from two opposite sides be acted upon by pulling ropes and winches. hereby can cause undesirable swaying of the drill can be counteracted and the drilling device can continue simply swiveled to the side of the crane boom and in be held in this pivoted position. In a Such pivoted position can, for example, the Crane via a second winch for positioning and insertion of the support tube can be used without the Drilling device would have to be released from the crane.

In dem hohlen Gestänge ist mindestens eine Spülleitung angeordnet. Das Gestänge kann erfindungsgemäß als ein doppelwandiges Gestänge ausgebildet sein, wobei der ringförmige Hohlraum zwischen einem inneren Kern und der äußeren Gestängewandung die Spülleitung bildet. Die andere Spülleitung kann dabei an der Außenseite oder in einem radial innenliegenden Hohlraum des inneren Gestänges angeordnet sein.At least one flushing line is arranged in the hollow rod. The linkage can be a double-walled according to the invention Linkage be formed, the annular Cavity between an inner core and the outer Rod wall forms the flushing line. The other flush line can be on the outside or in a radially inner Cavity of the inner linkage arranged his.

Das erfindungsgemäße Bohrverfahren ist dadurch gekennzeichnet, dass eine vorausgehend beschriebene Bohrvorrichtung verwendet wird und dass die Bohrvorrichtung dabei an einem Seil eines Kranes aufgehängt ist. Hierdurch kann ein effizientes Erstellen einer Bohrung mit den vorausgehend genannten Vorteilen durchgeführt werden. The drilling method according to the invention is characterized in that that a previously described drilling device is used and that the drilling device at one Rope of a crane is suspended. This can be an efficient Create a hole with the above Benefits are carried out.

Eine bevorzugte Ausführungsform des erfindungsgemäßen Verfahrens besteht darin, dass eine erste Bohrung innerhalb des Stützrohres erstellt wird, dass ein Bohrkopf mit Bohrstrang getrennt von der Bohrvorrichtung in das Stützrohr eingesetzt wird und dass anschließend die Bohrvorrichtung über das Gestänge mit dem Bohrstrang fest verbunden wird.A preferred embodiment of the method according to the invention is a first hole inside the support tube is created that a drill head with drill string separated from the drilling device into the support tube is used and that then the drilling device is firmly connected to the drill string via the rods.

Dabei kann die erste Bohrung mit einem anderen Bohrwerkzeug, etwa einem Bohreimer oder auch einer Bohrschnecke, eingebracht werden. Das Bohrwerkzeug kann dabei an der erfindungsgemäßen Bohrvorrichtung angebracht und mit dieser zum Einbringen der ersten Bohrung in beispielsweise einem lockeren Untergrund eingesetzt werden. Somit entsteht in dem Stützrohr ein Freiraum, welcher zum Einbringen und Justieren eines Bohrkopfes mit Bohrstrang verwendet werden kann. Auf diese Weise ist mit unterschiedlichen Bohrwerkzeugen ein effizienter Bohrfortschritt möglich, wobei ein Vollschnitt-Bohrkopf mit Bohrstrang insbesondere zur Bearbeitung eines harten Untergrundes zweckmäßig ist.The first hole can be made with a different drilling tool, like a drill bucket or a auger, be introduced. The drilling tool can be Drilling device attached and with this for making the first hole in, for example be used on a loose surface. Thus arises there is a free space in the support tube for insertion and adjusting a drill head with drill string used can be. This way is different Drilling tools an efficient drilling progress possible, being a full cut drill head with drill string in particular useful for working on a hard surface is.

Dieses Verfahren ist erfindungsgemäß dadurch weitergebildet, dass der Bohrkopf mit dem Bohrstrang vor einem Befestigen an dem Gestänge mittels einer Halteeinrichtung in dem Stützrohr in einer Verbindungsposition gehalten wird, dass nach dem Befestigen die Halteeinrichtung gelöst wird, während die Bohrvorrichtung weiter an dem Seil aufgehängt ist, und dass anschließend der Aufsatzrahmen drehfest mit dem Stützrohr verbunden wird. Dies erlaubt ein sicheres und zugleich schnelles Verbinden des Bohrstranges des Bohrkopfes mit dem Gestänge der Bohrvorrichtung. This method is further developed according to the invention in that that the drill head with the drill string before fastening on the linkage by means of a holding device in the support tube is held in a connecting position, that after the fastening, the holding device is released, while the drill continues to hang on the rope and that afterwards the stacking frame rotates with the support tube is connected. This allows a safe and at the same time fast connection of the drill string of the drill head with the drill string.

Ein besonders effizientes Fixieren des Bohrstranges innerhalb des Stützrohres zum Verbinden mit dem Gestänge wird erfindungsgemäß dadurch erreicht, dass die Halteeinrichtung mindestens einen radial zum Stützrohr verfahrbaren Schlitten mit einer Haltegabel aufweist, in welcher ein Flansch des Bohrstranges in der Halteposition aufliegt. Insbesondere sind zwei, drei oder vier Haltegabeln gleichmäßig über den Umfang des oberen Endes des Stützrohres verteilt auf einer Plattform angeordnet. Die Gabelweite der Haltegabel entspricht dabei dem Außendurchmesser des Bohrstranges, wobei der durchmessergrößere Flansch oder Kragen des Bohrstranges auf der oder den Haltegabeln aufliegt und so in einer gewünschten Halteposition angeordnet wird. Es ist somit ein einfaches Verbinden mit dem Gestänge der Bohrvorrichtung außerhalb des Stützrohres möglich.A particularly efficient fixation of the drill string inside of the support tube for connecting to the linkage achieved according to the invention in that the holding device at least one slide radially movable to the support tube with a holding fork in which a flange of the drill string lies in the holding position. In particular are two, three or four holding forks evenly over the circumference of the upper end of the support tube distributed on arranged on a platform. The fork width of the holding fork corresponds to the outside diameter of the drill string, whereby the larger diameter flange or collar of the drill string rests on the holding fork (s) and so in a desired stop position is arranged. So it is easy connection to the drill string possible outside the support tube.

Bei dem erfindungsgemäßen Kran ist es in vorteilhafter Weise vorgesehen, dass die Bohrung mit der Bohrvorrichtung durch das Stützrohr hindurch bis in eine darunterliegende Bodenschicht niedergebracht wird. Grundsätzlich kann ein Stützrohr nur in einen relativ lockeren Boden eingerammt werden. Ist jedoch ein über die lockere Bodenschicht hinaus verlängerter Gründungspfahl erforderlich, so kann zunächst die lockere Bodenschicht innerhalb des Stützrohres durch ein erstes Bohrwerkzeug, beispielsweise einen Bohreimer entfernt werden. Es kann dann ein zweites Bohrwerkzeug, insbesondere ein Vollschnitt-Bohrkopf mit Bohrstrang, an derselben Bohrvorrichtung befestigt und eingesetzt werden, mit der dann auch ein unterhalb des Stützrohres liegender festerer, felsiger Boden effizient abgearbeitet werden kann. In the crane according to the invention, it is more advantageous Way provided that the bore with the drilling device through the support tube into an underlying one Bottom layer is brought down. Basically, one Support tube only rammed into a relatively loose floor become. However, is one beyond the loose layer of soil extended foundation pile required, so initially the loose bottom layer inside the support tube by a first drilling tool, for example a drilling bucket be removed. A second drilling tool can then be especially a full-cut drill head with drill string, attached and used on the same drilling device, with the one lying below the support tube solid, rocky ground can be processed efficiently can.

Grundsätzlich kann der Druck auf das Bohrwerkzeug mittels eines teleskopierbaren Gestänges über entsprechende Hydraulikdruckzylinder aufgebracht werden. Besonders wirksam und energiesparend ist es jedoch, dass beim Bohren das Gestänge in dem Aufsatzrahmen axial frei verschiebbar geführt ist, so dass das Gewicht des Gestänges auf das Bohrwerkzeug drückt. Dabei kann der Bohrstrang zusätzlich mit Auflastgewichten versehen sein, so dass ein ausreichender Druck für einen zügigen Bohrfortschritt auf das Bohrwerkzeug ausgeübt werden kann.Basically, the pressure on the drilling tool can a telescopic linkage via corresponding hydraulic pressure cylinders be applied. Particularly effective and it is energy-saving, however, that the drill rods when drilling guided axially freely in the stack frame is so that the weight of the rod on the drilling tool suppressed. The drill string can also be used Load weights must be provided, so that a sufficient Pressure for rapid drilling progress on the drilling tool can be exercised.

Eine bevorzugte Ausführungsform des erfindungsgemäßen Bohrverfahrens besteht weiter darin, dass beim Bohren über die erste Spülleitung Spülluft zugeführt wird, während über die zweite Spülleitung Bohrklein mit Flüssigkeit und der Spülluft abgeführt werden. Mit diesem Verfahren ist ein besonders effizientes Abtransportieren des Bohrkleines möglich, so dass ein zügiger Bohrfortschritt erreicht wird.A preferred embodiment of the drilling method according to the invention further consists in the fact that when drilling over the first purge line purge air is supplied while via the second flushing line drill cuttings with liquid and the flushing air be dissipated. Using this procedure is a special one efficient removal of the cuttings possible, so that rapid drilling progress is achieved.

Die Erfindung wird nachfolgend anhand von bevorzugten Ausführungsbeispielen weiter erläutert, welche schematisch in den Zeichnungen dargestellt sind. In den Zeichnungen zeigen:

Fig. 1
das Einbringen eines Bohrwerkzeuges in ein Stützrohr;
Fig. 2
das Aufbringen der Bohrvorrichtung auf das Bohrwerkzeug;
Fig. 3
die erfindungsgemäße Bohrvorrichtung beim Einbringen einer Bohrung;
Fig. 4
eine schematische Seitenansicht einer weiteren erfindungsgemäßen Bohrvorrichtung, welche an einem Kran aufgehängt ist.
The invention is explained in more detail below on the basis of preferred exemplary embodiments which are shown schematically in the drawings. The drawings show:
Fig. 1
the introduction of a drilling tool into a support tube;
Fig. 2
applying the drilling device to the drilling tool;
Fig. 3
the drilling device according to the invention when drilling a hole;
Fig. 4
is a schematic side view of another drilling device according to the invention, which is suspended on a crane.

Gemäß Fig. 1 ist auf einem schwimmenden Ponton 2 ein Kran 4 mit einem Ausleger 6 angeordnet. Zum Erstellen von Gründungspfählen sind bereits zwei Stützrohre 46 in eine lockere Bodenschicht 3 am Grund des Gewässers eingerammt. In ein erstes Stützrohr 46, welches über die Gewässeroberfläche hinausreicht, wird mit dem Kran 4 über ein Seil 5 ein Bohrwerkzeug in das Stützrohr 46 eingeführt. Das Bohrwerkzeug, welches aus einem Vollschnitt-Bohrkopf 18 mit einem rohrförmigen Bohrstrang 19 besteht, wird mittels des Seiles 5 bis zu einer definierten Höhe eines durchmessergrößeren Kragens 21 an dem Bohrstrang 19 abgesenkt.1 is a crane on a floating pontoon 2 4 arranged with a boom 6. To create Foundation piles are already two support tubes 46 in one loose soil layer 3 rammed at the bottom of the water. In a first support tube 46, which over the surface of the water reaches, is with the crane 4 on a rope 5, a drilling tool is inserted into the support tube 46. The Drilling tool, which consists of a full-cut drill head 18 with a tubular drill string 19, is by means of of the rope 5 up to a defined height of a larger diameter Collar 21 lowered on the drill string 19.

In dieser Position wird das Bohrwerkzeug mittels einer Halteeinrichtung 42 fixiert. Hierzu werden zwei gegenüberliegende Schlitten 44, welche auf einer ringförmigen Plattform 43 am oberen Ende des Stützrohres 46 verfahrbar gelagert sind, radial an den Bohrstrang 19 zugestellt. Dabei kommen nicht näher dargestellte Haltegabeln unterhalb des durchmessergrößeren Kragens 21 zu liegen, so dass der Kragen 21 auf den Haltegabeln der beiden Schlitten 44 in der Halteposition aufliegt.The drilling tool is in this position by means of a holding device 42 fixed. For this, two opposite Carriage 44, which on an annular platform 43 movably supported at the upper end of the support tube 46 are delivered radially to the drill string 19. Come here Holding forks, not shown, below the larger diameter Collar 21 to lie so that the collar 21 on the holding forks of the two carriages 44 in the holding position rests.

Nunmehr wird das Seil 5 von dem Bohrwerkzeug gelöst und der Kran 4 kann die auf dem Ponton 2 bereitgestellte Bohrvorrichtung 10 aufnehmen. Die Bohrvorrichtung 10 wird mittels des Kranes 4 über den im Stützrohr 46 fixierten Bohrwerkzeug ausgerichtet, was in Fig. 2 dargestellt ist. Anschließend wird die an einer Kranaufhängung 14 am Seil 5 befindliche Bohrvorrichtung 10 auf das obere Ende des Bohrstranges 19 abgesenkt und mit diesem drehfest verbunden. Gegebenenfalls können zwischen die Bohrvorrichtung 10 und dem Bohrstrang 19 noch weitere Bohrstrangelemente eingesetzt werden, um eine gewünschte Bohrtiefe zu erreichen. Now the rope 5 is released from the drilling tool and the Crane 4 can use the drilling device provided on pontoon 2 Record 10. The drilling device 10 is by means of of the crane 4 via the drilling tool fixed in the support tube 46 aligned, which is shown in Fig. 2. Subsequently is on a crane suspension 14 on the rope 5th located drilling device 10 on the upper end of the drill string 19 lowered and rotatably connected to this. If necessary, between the drilling device 10 and the drill string 19 still used additional drill string elements to achieve a desired drilling depth.

Beim drehfesten Verbinden eines Gestänges 12 der Bohrvorrichtung 10 mit dem Bohrstrang 19 werden auch lediglich schematisch angeordnete Spülleitungen 26, 28 mit entsprechenden Leitungen innerhalb des Bohrstranges 19 verbunden.When connecting a rod 12 of the drilling device in a rotationally fixed manner 10 with the drill string 19 are also only schematically arranged rinsing lines 26, 28 with corresponding Lines connected within the drill string 19.

Anschließend werden die beiden Schlitten 44 der Haltevorrichtung 42 radial von dem Bohrstrang 19 entfernt, wobei die Bohrvorrichtung 10 mittels des Seiles 5 weiter abgesenkt wird, bis ein Aufsatzrahmen 20 der Bohrvorrichtung 10 am oberen Rand des Stützrohres 46 aufliegt. Dabei umgreifen Spannzangen 24 einer Verbindungseinrichtung 22 den Rand des Stützrohres 46 und klemmen den Aufsatzrahmen 20 am Stützrohr 46 fest.Then the two carriages 44 of the holding device 42 radially away from the drill string 19, wherein the drilling device 10 further lowered by means of the rope 5 until an attachment frame 20 of the drilling device 10 rests on the upper edge of the support tube 46. Reach around Collets 24 a connector 22 the edge of the Support tube 46 and clamp the top frame 20 on the support tube 46 firm.

Nunmehr wird der Bohrkopf 18 durch axiales Verschieben des Gestänges 12 der Bohrvorrichtung 10 durch Absenken des Seiles 5 auf die Oberfläche der lockeren Bodenschicht 3 abgesetzt.Now the drill head 18 by axially moving the Linkage 12 of the drilling device 10 by lowering the Rope 5 deposited on the surface of the loose bottom layer 3.

Der Bohrkopf 18 mit dem Bohrstrang 19 wird über einen am Aufsatzrahmen 20 angeordneten Hydraulikantrieb 16 in Rotation versetzt, wobei der Bohrkopf 18 entsprechend der Darstellung von Fig. 3 einen Boden 3 innerhalb des Stützrohres 46 entfernt und durch weiteres Absenken eine Bohrung 40 bis in die felsige Bodenschicht 7 einbringt.The drill head 18 with the drill string 19 is on a Mount frame 20 arranged hydraulic drive 16 in rotation offset, the drill head 18 as shown 3 a bottom 3 within the support tube 46 removed and by further lowering a bore 40 into the rocky bottom layer 7.

Entsprechend dem Pfeil P1 wird Luft über einen ersten Anschluss 27 in die erste Spülleitung eingeblasen, wobei die Spülluft vom Bohrkopf abgetragenes Bohrklein aus der Bohrung 40 in die zweite Spülleitung 28 abführt. Über einen zweiten Anschluss 29 wird das Bohrklein entsprechend dem Pfeil P2 am oberen Ende der Bohrvorrichtung 10 abgeführt. According to arrow P1, air is supplied via a first connection 27 blown into the first flushing line, the Drilling cuttings removed from the drilling head by the drilling head 40 discharges into the second flushing line 28. About one second connection 29 is the cuttings corresponding to the Arrow P2 discharged at the upper end of the drilling device 10.

Bei Fertigstellung der Bohrung kann diese zum Bilden eines Gründungspfahles mit Beton und gegebenenfalls mit Armierungsstählen versehen werden. Die Bohrvorrichtung 10 kann daraufhin mittels des Kranes 4 in einfacher Weise zu dem nächsten Stützrohr 46 befördert werden, ohne dass ein aufwändiges Verändern und neu Justieren des Pontons 2 notwendig wäre.When the hole is completed, it can be used to form a Foundation pile with concrete and, if necessary, with reinforcing steels be provided. The drilling device 10 can then by means of the crane 4 in a simple manner next support tube 46 are transported without a complex Modification and readjustment of pontoon 2 necessary would.

Bei der weiteren Ausführungsform der Erfindung gemäß Fig. 4 ist eine Bohrvorrichtung 10, welche mit einem Bohreimer 11 als Bohrwerkzeug versehen ist, in der zuvor beschriebenen Weise über ein Seil 5 an einem Ausleger 6 eines Kranes 4 aufgehängt. Um ein unerwünschtes Pendeln der Bohrvorrichtung 10 zu verhindern und um ein Beiseiteschwenken der Bohrvorrichtung 10 an den Ausleger 6 zu ermöglichen, ist zwischen der Bohrvorrichtung 10 und dem Ausleger 6 ein erstes Zugseil 31 angeordnet. Dieses kann zum Beiseiteschwenken mittels einer nicht dargestellten Winde gestrafft werden. Weiterhin ist ein zweites Zugseil 32 auf der vom Ausleger 6 abgewandten Seite der Bohrvorrichtung 10 angelenkt. Das zweite Zugseil 32 erstreckt sich dabei von der Bohrvorrichtung 10 zur Auslegerspitze 8. Diese ist mit einer Umlenkrolle versehen, welche sich über das Seil 5 hinaus vom Ausleger 6 weg um einen definierten Betrag erstreckt. Durch entsprechende Spannung des zweiten Zugseiles 32 und des ersten Zugseiles 31 kann einer unerwünschten Pendelbewegung der Bohrvorrichtung 10 entgegengewirkt werden.In the further embodiment of the invention according to FIG. 4 is a drilling device 10 which is equipped with a drilling bucket 11 is provided as a drilling tool in the previously described Way over a rope 5 on a boom 6 of a crane 4th suspended. To prevent undesirable oscillation of the drilling device 10 to prevent and to swing the To enable drilling device 10 to the boom 6 a first between the drilling device 10 and the boom 6 Traction rope 31 arranged. This can be swung aside be tightened by means of a winch, not shown. Furthermore, a second pull rope 32 is on the boom 6 opposite side of the drilling device 10 articulated. The second pull cable 32 extends from the drilling device 10 to the boom tip 8. This is with a deflection roller provided, which extends beyond the rope 5 from Boom 6 extends away by a defined amount. By corresponding tension of the second pull cable 32 and first pull rope 31 can cause an undesirable pendulum movement the drilling device 10 are counteracted.

Claims (13)

  1. Boring device for producing a bore (40) with a casing tube (46), which is introduced into the soil, having
    a boring tool, which can be fixed to a lower end of a linkage (12),
    a crane attachment (14) for holding the boring tool with the linkage (12) on a crane cable (5),
    a drive (16) constructed for the rotary driving of the linkage (12) and
    a connecting device (22) for making a torsionally rigid connection between the casing tube (46) and the drive (16),
    characterized in that
    the linkage (12) is hollow and has at least one flushing line (26, 28),
    in the vicinity of the upper end of the linkage (12) is provided at least one connection (27, 29) for supplying a fluid to and/or removing a fluid from the flushing line (26, 28),
    a mounting frame (20) is provided, in which the linkage (12) is held in rotary and axially displaceable manner and which is constructed for mounting on the casing tube (46),
    the drive (16) is provided on the mounting frame (20) and
    by means of the connecting device (22), a torsionally rigid connection can be established between the casing tube (46) and the mounting frame (20).
  2. Boring device according to claim 1,
    characterized in that
    the connecting device (22) has hydraulic holding clamps (24) with which the mounting frame (20) can be clamped to an upper edge of the casing tube (46).
  3. Boring device according to claim 1 or 2,
    characterized in that
    the first connection (27) and/or the second connection (29) has a swivel joint.
  4. Boring device according to one of the claims 1 to 3,
    characterized in that
    the boring tool is a full cut boring head (18) with boring string (19) and that
    the boring string (19) is hollow and has two lines connectable to the first flushing line (26) and the second flushing line (28) in the linkage (12).
  5. Boring device according to one of the claims 1 to 4,
    characterized in that
    it is suspended by means of a cable (5) on a jib (6) of a crane (4), that
    on the side facing the jib (6) is fixed a first hauling cable (31) extending to the jib (6) and that
    on the other side is articulated a second hauling cable (32), which extends to the upper end of the jib (6).
  6. Boring device according to one of the claims 1 to 5,
    characterized in that
    the linkage (12) is constructed as a double-wall linkage.
  7. Boring method for producing a bore (40) with a casing tube (46), which is introduced into the soil, in which
    a boring tool that is mounted on a lower end of a linkage (12) is held in the casing tube (46) by means of a crane cable (5),
    by means of a connecting device (22), the casing tube (46) is connected to a drive (16) in a torsionally rigid manner, which drive (16) drives the linkage (12) in rotary manner,
    characterized in that
    a mounting frame (20) is mounted on the casing tube (46), in which mounting frame (20) the linkage (12) is held in rotary and axially displaceable manner and which mounting frame (20) is provided with the drive (16),
    by means of the connecting device (22), the casing tube (46) and the mounting frame (20) are connected in a torsionally rigid manner, and
    via at least one flushing line (26, 28) in the hollow linkage (12), a fluid is supplied and/or removed.
  8. Boring method according to claim 7,
    characterized in that
    a first bore is produced within the casing tube (46),
    a boring head (18) with boring string (19), separate from the boring device (10), is introduced into the casing tube (46) and
    then the boring device (10) is firmly connected by means of the linkage (12) to the boring string (19).
  9. Boring method according to claim 8,
    characterized in that
    the boring head (18) with the boring string (19), prior to fixing to the linkage (12), is held by means of a holding device (42) in the casing tube (46) in a connecting position,
    after fixing, the holding device (42) is released, whilst the boring device (10) is still suspended on the cable and
    the mounting frame (20) is then connected with the casing tube (46) in a torsionally rigid manner.
  10. Boring method according to claim 9,
    characterized in that
    the holding device (42) has at least one carriage displaceable radially to the casing tube (46) and provided with a holding fork in which rests a flange of the boring string (19) in the holding position.
  11. Boring method according to one of the claims 7 to 10,
    characterized in that
    the bore (40) is deposited with the boring device (10) through the casing tube (46) in an underlying soil layer.
  12. Boring method according to one of the claims 7 to 11,
    characterized in that
    during boring, the linkage (12) is guided in axially freely displaceable manner in the mounting frame (20), so that the weight of the linkage (12) presses on the boring tool.
  13. Boring method according to one of the claims 7 to 12,
    characterized in that
    during boring, scavenging air is supplied by means of the first flushing line (26), whilst the second flushing line (28) removes borings with liquid and scavenging air.
EP02024209A 2001-11-09 2002-10-30 Drilling apparatus and method Expired - Lifetime EP1310600B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10155105A DE10155105C1 (en) 2001-11-09 2001-11-09 Earth drill with pipe line installer has frame supporting hollow drill shaft with flushing pipes
DE10155105 2001-11-09

Publications (2)

Publication Number Publication Date
EP1310600A1 EP1310600A1 (en) 2003-05-14
EP1310600B1 true EP1310600B1 (en) 2004-03-24

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US (1) US6814167B2 (en)
EP (1) EP1310600B1 (en)
JP (1) JP3868889B2 (en)
KR (1) KR100497814B1 (en)
CN (1) CN1280515C (en)
AT (1) ATE262625T1 (en)
DE (2) DE10155105C1 (en)
DK (1) DK1310600T3 (en)
ES (1) ES2218496T3 (en)
HK (1) HK1054071B (en)
PT (1) PT1310600E (en)
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JP2003193785A (en) 2003-07-09
US20030094308A1 (en) 2003-05-22
DE50200308D1 (en) 2004-04-29
KR20030038525A (en) 2003-05-16
HK1054071B (en) 2008-12-12
CN1417448A (en) 2003-05-14
US6814167B2 (en) 2004-11-09
HK1054071A1 (en) 2003-11-14
KR100497814B1 (en) 2005-07-01
ATE262625T1 (en) 2004-04-15
RU2240418C2 (en) 2004-11-20
ES2218496T3 (en) 2004-11-16
EP1310600A1 (en) 2003-05-14
CN1280515C (en) 2006-10-18
DK1310600T3 (en) 2004-07-19
DE10155105C1 (en) 2003-04-10
SG125906A1 (en) 2006-10-30
JP3868889B2 (en) 2007-01-17
PT1310600E (en) 2004-07-30

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