EP2295645A1 - Drilling apparatus and method of making piles in a soil - Google Patents

Drilling apparatus and method of making piles in a soil Download PDF

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Publication number
EP2295645A1
EP2295645A1 EP09011061A EP09011061A EP2295645A1 EP 2295645 A1 EP2295645 A1 EP 2295645A1 EP 09011061 A EP09011061 A EP 09011061A EP 09011061 A EP09011061 A EP 09011061A EP 2295645 A1 EP2295645 A1 EP 2295645A1
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EP
European Patent Office
Prior art keywords
line connection
drill string
drill
rotary
building material
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
EP09011061A
Other languages
German (de)
French (fr)
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EP2295645B1 (en
Inventor
Sebastian Bauer
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.)
Bauer Maschinen GmbH
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Bauer Maschinen 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.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP09011061A priority Critical patent/EP2295645B1/en
Priority to PL09011061T priority patent/PL2295645T3/en
Priority to EA201001141A priority patent/EA017425B1/en
Priority to US12/857,823 priority patent/US8550187B2/en
Priority to AU2010212434A priority patent/AU2010212434B2/en
Priority to BRPI1002744-0A priority patent/BRPI1002744A2/en
Priority to JP2010186767A priority patent/JP5044682B2/en
Priority to UAA201010439A priority patent/UA98532C2/en
Priority to CN2010102687284A priority patent/CN102002940B/en
Publication of EP2295645A1 publication Critical patent/EP2295645A1/en
Application granted granted Critical
Publication of EP2295645B1 publication Critical patent/EP2295645B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • 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
    • E02D7/22—Placing by screwing down

Definitions

  • Such a drill is formed with a drill drive for rotationally driving a drill string and a rotary feedthrough for passing a building material from a building material hose into the interior of the drill string, wherein the rotary feedthrough a first line connection for having the building material hose and a second conduit connection for the drill string rotatable relative to the first conduit connection.
  • the invention further relates to a method for tillage according to the preamble of claim 12.
  • a drill string is set into a rotational movement by means of a drill drive, and connected via a rotary feedthrough, which at a first line connection to a building material hose and a second conduit connection rotatable relative to the first conduit connection is connected to the drill string, at least temporarily liquid building material is introduced from the building material hose into the interior of the drill string.
  • a generic drill is for example from the DE 102 38 193 A1 known.
  • the DE 102 38 193 A1 describes an auger with which a auger can be rotated and inserted axially into the ground.
  • a feed is provided with which for filling the produced well concrete can be introduced into the interior of the auger.
  • the feed has a movable hose line, which is connected on the one hand to a fixed transfer point on the drill and on the other hand to the worm. Due to this flexible hose line it is possible to move the worm up and down relative to the drilling device.
  • the non-rotatably connected to the carrier vehicle hose is connected via a rotary feedthrough, a so-called flushing head to the worm. This rotary feedthrough is intended to decouple the rotational movement of the screw relative to the hose line.
  • a rotary feedthrough in practice does not work frictionless, it will come in operation despite rotary feedthrough regularly to a torque transfer from the auger to the hose line connection.
  • the hose line connection can be fixed by means of a torque arm rotationally fixed with respect to the transfer point.
  • Such a torque support can be structurally relatively complex, especially when the drill string protrudes far above the carrier vehicle and thus arranged at the upper end of the drill string rotary feedthrough is far above the carrier vehicle, since the corresponding distance must be bridged by the torque arm ,
  • the object of the invention is to develop a generic drill and a generic drilling method so that in a particularly simple manner, a particularly reliable material supply, especially concrete feed, into the interior of the drill string is possible.
  • the drilling apparatus according to the invention is characterized in that the rotary feedthrough has a rotating device for actively rotating the second line connection relative to the first line connection.
  • a basic idea of the invention can be seen in that a rotating device with drive means is provided on the rotary feedthrough, which allows the two connections of the rotary feedthrough to be actively rotated relative to each other.
  • This active rotary device can be synchronized with the drill drive so that the line connection for the building material hose always points in the same direction even when the drill string rotates, that is, the rotational movement of the drill string can be actively compensated by means of the rotating device according to the invention.
  • This can be effectively prevented that the hose kinks or even wrapped around the drill string or drill drive, so that a reliable concrete supply is ensured.
  • a complex torque support of the hose connection is no longer necessary, since the orientation of the hose line connection takes place relative to the fixed transfer point by means of the active rotary device.
  • the drilling device according to the invention is preferably an earth boring device, in particular an endless screw drilling device with Kelly extension.
  • the rotary feedthrough which can also be referred to as a flushing head, is expediently arranged on the upper side of the drill string and / or coaxially with the drill string.
  • a fluid connection between the interior of the non-rotating building material hose and the interior of the rotating drill string can be established.
  • the building material which is introduced from the building material hose into the interior of the drill string, it can be in particular concrete.
  • the drill drive is used for rotationally driving the drill string about the drilling axis, wherein the rotary feedthrough is expediently arranged on the drilling axis.
  • the rotating means for compensating the rotation of the drill drive is synchronized opposite to the drill drive.
  • This may in particular be understood to mean that the rotary device rotates the two line connections relative to one another with the rotational speed of the drill drive, but with the direction of rotation reversed, so that the rotational movements of the drill drive and the rotary device cancel and the line connection for the building material hose also with the rotating drill string to the outside stationary.
  • the synchronization can in particular be effected by means of a controller which controls the rotary device, in particular a corresponding drive motor, in dependence on data on the rotational speed of the drill string and / or drill drive. In principle, however, a mechanical synchronization would be conceivable.
  • the rotating device has at least one drive motor for actively rotating the second line connection relative to the first line connection.
  • this drive motor is suitably arranged on the rotary feedthrough, that is to say usually on the upper side of the drill string.
  • the drive motor can be, for example, a hydraulic motor, since hydraulic energy is usually available anyway on a typical drill.
  • the drive motor can, however, also be, for example, an electric motor, since it can be controlled particularly easily and thus synchronized.
  • a servomotor may be provided as a drive motor of the rotary device. In principle, several types of motor, for example, in series, can be combined.
  • a control for the rotating device is provided according to the invention, in particular an electronic control.
  • the opposite synchronization can be realized in a particularly simple manner.
  • the controller is expediently in operative connection with this drive motor, so that the controller can specify, for example, a setpoint speed or a setpoint position to the drive motor.
  • a rotary sensor is provided for determining the rotational speed and / or the direction of rotation of the drill string and / or the rotary drive, which is in signal communication with the controller.
  • the controller receives input data on the status of the drill string, so that they can operate counteracting the rotating device accordingly.
  • the rotator controller may obtain information about the status of the drill string, but also from other sources, such as the drill driver control.
  • the invention can be used particularly advantageously in drilling apparatuses in which the drill string, in particular in several parts, has a tool section running underneath the drill drive and at least partially above it Drill drive extending extension is formed.
  • a torque support for the hose connection which is necessary according to the prior art would have to be extended correspondingly far upwards, which would entail a corresponding additional outlay.
  • a torque support can be omitted, also this additional effort is eliminated here.
  • the rotary feedthrough is arranged on the extension, in particular on the upper side of the extension.
  • the drilling tool in particular a drilling screw, preferably a so-called endless screw, can be provided on the tool section.
  • the drill string for drilling depth increase can be mounted axially movable relative to the drill drive.
  • the drill string is mounted in the drill drive in the region of the extension.
  • a corresponding drive device may also be present.
  • the drill drive is arranged on a support structure, and that a transfer connection for the building material hose, preferably non-rotatably, is arranged on the support structure.
  • the drill drive and the transfer port for the building material hose are arranged on the same structure, so that the compensation of the rotational movement of the drill drive on the hose is possible in a particularly simple manner.
  • the carrier structure may be, for example, a mast carriage.
  • a mast carriage is expediently mounted longitudinally adjustable on a mast.
  • the mast can be considered as the said support structure.
  • a transfer point can be understood as the transfer point at which the building material can be introduced into the building material line, to which the building material hose can then be connected to a conveying device for the building material, in particular to an associated delivery line.
  • a further advantageous embodiment of the invention is that the rotary feedthrough at the line connection for the building material hose has a manifold.
  • the hose line connection points with the rotary feedthrough mounted to the floor or at least to the side so that the building material hose from the pipe connection can hang freely without kinking.
  • the line connection for the building material hose is arranged axially parallel to the line connection for the drill string, as a result of which a rotary feedthrough which can be used particularly reliably is obtained.
  • the manifold preferably has an arc angle of at least approximately 180 °.
  • the building material hose is particularly advantageous for the building material hose to hang down freely from the line connection for the building material hose and / or from the transfer connection.
  • the building material hose is attached only to the hose ends and is not supported and / or supported in the area between the two ends, ie hangs freely. Since according to the invention the active rotary feedthrough can ensure that the hose line connection of the rotary feedthrough is always in the same angular position with respect to the transfer connection, a support, in particular a torque support, of the hose between the hose ends can be dispensed with.
  • the drive motor preferably above the line connection for the drill string, is arranged on the rotary feedthrough.
  • the drive shaft of the drive motor extends at least approximately parallel to the drill string and to the drilling axis.
  • a further preferred embodiment of the invention is that at the first line connection, ie the connection for the hose, or at the second line connection, ie the connection for the drill string, a further rotary feedthrough is connected.
  • a further rotary feedthrough By means of such a second rotary feedthrough can be ensured that the building material hose is not overloaded even if, for example, in a fault, the active synchronization of the first active rotary feedthrough can not be performed with sufficient accuracy. If the rotation of the drill string is thus unintentionally or intentionally only partially compensated by the first rotary leadthrough, the remaining difference in the rotation between the rotating drill string and the non-rotating hose connection can be absorbed by the second rotary leadthrough.
  • the further rotary feedthrough is preferably passive, so in contrast to the first Rotary feedthrough no active rotating device.
  • the two rotary unions can be arranged coaxially.
  • the first active rotary feedthrough between the two line connections can have a friction clutch to protect the building material hose.
  • the inventive method can be carried out in particular by means of a drilling device according to the invention. It is characterized in that a rotating device is provided for active rotation of the second line connection relative to the first line connection, wherein the rotating device is operated in opposite synchronous with the drill drive. As a result, the rotation of the drill string is compensated at the hose line connection.
  • FIGS. 1 to 3 show exemplary embodiments of a drilling device according to the invention.
  • Fig. 1 shows, designed as a drill auger on a chassis 71, which is designed as a crawler chassis.
  • a mast 72 is arranged, which runs at least approximately perpendicularly in drilling operation in the rule.
  • a mast carriage 40 is mounted longitudinally displaceable.
  • a drill drive 10 for rotating a drill string 1 is provided on this mast carriage 40.
  • the drill string 1 has a tool section 2, which extends below the drill drive 10, and on which a drill screw 9 is arranged as a tool. Above the tool section 2, the drill string has an extension 3. In the area of this extension 3, the drill string 1 is passed through the drill drive 10.
  • the extension 3 is formed as a so-called Kelly extension with outer, along the drill string 1 extending profile strips 75. These profile strips 75 enable a positive torque transmission from the drill drive 10 to the extension 3 of the drill string 1, wherein the drill string 1 is simultaneously moved relative to the drill drive 10.
  • the drill further has a building material hose 6, by means of which a building material, in particular a hardening building material such as concrete, in the interior of the drill string 1 can be introduced. From the Bohrstranginneren the building material can escape through at least one below the drill string 1 arranged opening 79. This arrangement makes it possible to fill a borehole generated with the drill string 1 in the ground with building material.
  • a building material in particular a hardening building material such as concrete
  • the building material hose 6 is connected at its one end to a transfer port 50 At this point, the building material can be passed, for example, from a conveyor into the building material hose 6.
  • the transfer connection 50 is rotationally fixed and axially fixedly arranged on the mast carriage 40.
  • At its opposite upper end of the building material hose 6 is connected to a line connection 21, which is arranged at the upper end of the drill string 1.
  • the building material from the building material hose 6 can be introduced into the Bohrstranginnere.
  • the transfer connection 50 is formed at the end on an approximately horizontally extending supply pipe section 53 which is held on the mast carriage 40 via an at least approximately perpendicular support 51. About the support 51, the pipe section 53 and its transfer port 50 rotatably and axially fixed to the mast carriage 40. The pipe section 53 and its transfer connection 50 are located above the mast carriage 40 and above the rotary drive 10. At its end remote from the transfer connection 50, the pipe section 53 has a further connection 54 to which, for example, a supply hose or a rigid supply line can be connected or which is connected to a building material pump.
  • the transfer connection 50 for the building material hose 6, the line connection 21 for the hose 6 and also the further connection 54 face downwards, that is to say in the direction of the drilling axis to the ground, so that there hoses without kinking can be connected.
  • conduit 6 as building material hose makes it possible to compensate for changes in distance between the conduit connection 21 and the transfer connection 50, which occur when the drill string 1 is displaced relative to the drilling drive 10 and thus to the mast carriage 40.
  • the building material hose 6 is connected via a rotary feedthrough 20 according to the invention with the drill string 1, which in the Figures 2 and 3 is shown in detail.
  • This rotary feedthrough 20 is arranged at the upper end of the drill string 1 and has an axis of rotation which is coaxial with the drilling axis, that is to say coaxial with the drill string 1.
  • the rotary feedthrough 20 is designed as an active rotary feedthrough with an active rotary device 30, wherein the rotary device 30 has a drive motor 32 and a gear 33 which is operable with the drive motor 32.
  • the drive motor 32 and the associated gear 33 By means of the drive motor 32 and the associated gear 33, the first line connection 21, on which the building material hose 6 is arranged rotatably, active against the second line termination 22, to which the rotary feedthrough 20 in particular rotatably connected to the drill string 1, are rotated about the drilling axis.
  • the drive motor 32 is arranged above the line connection 22 for the drill string 1 and above the transmission 33. On the drive motor 32 operating and control lines 35 are connected, which lead to the chassis 71.
  • the active rotary feedthrough 20 is actuated synchronized in opposite directions to the drill drive 10.
  • the drive motor 32 actively generates a relative rotational movement of the two line connections 21 and 22 to each other, which has the same speed, but the reverse direction of rotation compared to the drill drive 10.
  • control 39 is provided, which is in operative connection with the rotating device 30 and in particular with its drive motor 32 or its transmission 33.
  • This controller 39 is also in signal communication with a rotary sensor 38, which detects the rotation of the drill string 1 relative to the mast carriage 40 and thus relative to the chassis 71.
  • This rotary sensor 38 provides the input to the controller 39.
  • a further rotary feedthrough 70 can be provided, which can accommodate remaining differences in the rotational position between the drill string 1 and the hose 6.
  • the rotary feedthrough 20 has a manifold 60, which forms a pipe bend by about 180 °. End of this manifold 60, the line connection 21 is formed for the building material hose 6. By means of the manifold, the line connection 21 for the building material hose 6 is arranged directed downwards, so that the connected building material hose 6 can enter there without kinking.

Abstract

The apparatus has a drill drive (10) for driving a drill string (1) in a rotating manner, and a rotary feedthrough (20) through which a construction material is passed from a construction material hose (6) into an interior of the drill string. The rotary feedthrough comprises a pair of line connections (21, 22) for the construction material hose and the drill string, where one of the line connections is rotatable relative to the other line connection. The feedthrough comprises a rotary device (30) for actively rotating the latter line connection relative to the former line connection. An independent claim is also included for a method for drilling ground.

Description

Die Erfindung betrifft ein Bohrgerät zur Bodenbearbeitung gemäß dem Oberbegriff des Anspruchs 1. Ein solches Bohrgerät ist ausgebildet mit einem Bohrantrieb zum drehenden Antreiben eines Bohrstrangs und einer Drehdurchführung zum Durchleiten eines Baustoffs aus einem Baustoffschlauch in das Innere des Bohrstrangs, wobei die Drehdurchführung einen ersten Leitungsanschluss für den Baustoffschlauch und einen relativ zum ersten Leitungsanschluss drehbaren zweiten Leitungsanschluss für den Bohrstrang aufweist.Such a drill is formed with a drill drive for rotationally driving a drill string and a rotary feedthrough for passing a building material from a building material hose into the interior of the drill string, wherein the rotary feedthrough a first line connection for having the building material hose and a second conduit connection for the drill string rotatable relative to the first conduit connection.

Die Erfindung betrifft ferner ein Verfahren zur Bodenbearbeitung gemäß dem Oberbegriff des Anspruchs 12. Bei einem solchen Verfahren ist vorgesehen, dass ein Bohrstrang mittels eines Bohrantriebs in eine Drehbewegung versetzt wird, und über eine Drehdurchführung, welche an einem ersten Leitungsanschluss an einem Baustoffschlauch angeschlossen und an einem relativ zum ersten Leitungsanschluss drehbaren zweiten Leitungsanschluss am Bohrstrang angeschlossen ist, zumindest zeitweise flüssiger Baustoff aus dem Baustoffschlauch in das Innere des Bohrstrangs eingeleitet wird.The invention further relates to a method for tillage according to the preamble of claim 12. In such a method it is provided that a drill string is set into a rotational movement by means of a drill drive, and connected via a rotary feedthrough, which at a first line connection to a building material hose and a second conduit connection rotatable relative to the first conduit connection is connected to the drill string, at least temporarily liquid building material is introduced from the building material hose into the interior of the drill string.

Ein gattungsgemäßes Bohrgerät ist beispielsweise aus der DE 102 38 193 A1 bekannt. Die DE 102 38 193 A1 beschreibt ein Erdbohrgerät, mit welchem eine Bohrschnecke in Drehung versetzt und axial in den Boden eingebracht werden kann. Ferner ist eine Zuführung vorgesehen, mit welcher zum Verfüllen des erzeugten Bohrlochs Beton in das Innere der Bohrschnecke eingebracht werden kann. Um eine Einleitung des Betons in die axial bewegliche Schnecke zu ermöglichen, weist die Zuführung eine bewegliche Schlauchleitung auf, welche einerseits an einem festen Übergabepunkt am Bohrgerät und andererseits an der Schnecke angeschlossen ist. Aufgrund dieser beweglichen Schlauchleitung ist es möglich, die Schnecke relativ zum Bohrgerät auf- und abzubewegen. Die drehfest am Trägerfahrzeug angeschlossene Schlauchleitung ist dabei über eine Drehdurchführung, einen sogenannten Spülkopf, an der Schnecke angeschlossen. Diese Drehdurchführung soll die Drehbewegung der Schnecke gegenüber der Schlauchleitung entkoppeln.A generic drill is for example from the DE 102 38 193 A1 known. The DE 102 38 193 A1 describes an auger with which a auger can be rotated and inserted axially into the ground. Furthermore, a feed is provided with which for filling the produced well concrete can be introduced into the interior of the auger. In order to allow an introduction of the concrete into the axially movable screw, the feed has a movable hose line, which is connected on the one hand to a fixed transfer point on the drill and on the other hand to the worm. Due to this flexible hose line it is possible to move the worm up and down relative to the drilling device. The non-rotatably connected to the carrier vehicle hose is connected via a rotary feedthrough, a so-called flushing head to the worm. This rotary feedthrough is intended to decouple the rotational movement of the screw relative to the hose line.

Da eine Drehdurchführung in der Praxis jedoch nicht reibungsfrei arbeitet, wird es im Betrieb trotz Drehdurchführung regelmäßig zu einer Drehmomentübertragung von der Bohrschnecke auf den Schlauchleitungsanschluss kommen. Um zu verhindern, dass in diesem Fall bei Betätigung des Bohrantriebs die Schlauchleitung abgeknickt oder gar um die Schnecke oder den Bohrantrieb herumgewickelt wird, kann der Schlauchleitungsanschluss mittels einer Drehmomentstütze drehfest bezüglich des Übergabepunkts fixiert werden.However, since a rotary feedthrough in practice does not work frictionless, it will come in operation despite rotary feedthrough regularly to a torque transfer from the auger to the hose line connection. In order to prevent that in this case the tubing is bent or even wound around the screw or the drill drive when operating the drill drive, the hose line connection can be fixed by means of a torque arm rotationally fixed with respect to the transfer point.

Eine solche Drehmomentstütze kann aber insbesondere dann konstruktiv relativ aufwändig sein, wenn der Bohrstrang weit nach oben über das Trägerfahrzeug übersteht und sich somit die am oberen Ende des Bohrstrangs angeordnete Drehdurchführung weit oberhalb des Trägerfahrzeuges befindet, da die entsprechende Strecke auch von der Drehmomentstütze überbrückt werden muss.However, such a torque support can be structurally relatively complex, especially when the drill string protrudes far above the carrier vehicle and thus arranged at the upper end of the drill string rotary feedthrough is far above the carrier vehicle, since the corresponding distance must be bridged by the torque arm ,

Aufgabe der Erfindung ist es, ein gattungsgemäßes Bohrgerät und ein gattungsgemäßes Bohrverfahren so weiterzubilden, dass in besonders einfacher Weise eine besonders zuverlässige Baustoffzuführung, insbesondere Betonzuführung, in das Innere des Bohrstrangs möglich ist. The object of the invention is to develop a generic drill and a generic drilling method so that in a particularly simple manner, a particularly reliable material supply, especially concrete feed, into the interior of the drill string is possible.

Die Aufgabe wird erfindungsgemäß durch ein Bohrgerät mit den Merkmalen des Anspruchs 1 und ein Verfahren mit den Merkmalen des Anspruchs 12 gelöst. Bevorzugte Ausführungsbeispiele des Bohrgerätes sind in den abhängigen Ansprüchen angegeben.The object is achieved by a drill with the features of claim 1 and a method having the features of claim 12. Preferred embodiments of the drill are indicated in the dependent claims.

Das erfindungsgemäße Bohrgerät ist dadurch gekennzeichnet, dass die Drehdurchführung eine Dreheinrichtung zum aktiven Verdrehen des zweiten Leitungsanschlusses relativ zum ersten Leitungsanschluss aufweist.The drilling apparatus according to the invention is characterized in that the rotary feedthrough has a rotating device for actively rotating the second line connection relative to the first line connection.

Ein Grundgedanke der Erfindung kann darin gesehen werden, dass an der Drehdurchführung eine Dreheinrichtung mit Antriebsmitteln vorgesehen ist, die es erlaubt, die beiden Anschlüsse der Drehdurchführung aktiv zueinander zu verdrehen. Insbesondere kann diese aktive Dreheinrichtung so mit dem Bohrantrieb synchronisiert werden, dass der Leitungsanschluss für den Baustoffschlauch auch bei drehendem Bohrstrang stets in dieselbe Richtung zeigt, das heißt die Drehbewegung des Bohrstrangs kann mittels der erfindungsgemäßen Dreheinrichtung aktiv kompensiert werden. Hierdurch kann wirksam verhindert werden, dass der Schlauch abknickt oder sich gar um den Bohrstrang oder den Bohrantrieb wickelt, so dass eine zuverlässige Betonzufuhr gewährleistet ist. Gleichzeitig ist eine aufwändige Drehmomentabstützung des Schlauchanschlusses nicht mehr erforderlich, da die Ausrichtung des Schlauchleitungsanschlusses relativ zum festen Übergabepunkt mittels der aktiven Dreheinrichtung erfolgt.A basic idea of the invention can be seen in that a rotating device with drive means is provided on the rotary feedthrough, which allows the two connections of the rotary feedthrough to be actively rotated relative to each other. Especially This active rotary device can be synchronized with the drill drive so that the line connection for the building material hose always points in the same direction even when the drill string rotates, that is, the rotational movement of the drill string can be actively compensated by means of the rotating device according to the invention. This can be effectively prevented that the hose kinks or even wrapped around the drill string or drill drive, so that a reliable concrete supply is ensured. At the same time, a complex torque support of the hose connection is no longer necessary, since the orientation of the hose line connection takes place relative to the fixed transfer point by means of the active rotary device.

Bei dem erfindungsgemäßen Bohrgerät handelt es sich vorzugsweise um ein Erdbohrgerät, insbesondere um eine Endlosschneckenbohrvorrichtung mit Kelly-Verlängerung. Die Drehdurchführung, die auch als Spülkopf bezeichnet werden kann, ist zweckmäßigerweise an der Oberseite des Bohrstrangs und/oder koaxial zum Bohrstrang angeordnet. Durch die Drehdurchführung kann eine Fluidverbindung zwischen dem Inneren des nicht rotierenden Baustoffschlauchs und dem Inneren des rotierenden Bohrstrangs hergestellt werden. Bei dem Baustoff, welcher aus dem Baustoffschlauch in das Innere des Bohrstrangs eingeleitet wird, kann es sich insbesondere um Beton handeln. Der Bohrantrieb dient zum drehenden Antreiben des Bohrstrangs um die Bohrachse, wobei die Drehdurchführung zweckmäßigerweise auf der Bohrachse angeordnet ist.The drilling device according to the invention is preferably an earth boring device, in particular an endless screw drilling device with Kelly extension. The rotary feedthrough, which can also be referred to as a flushing head, is expediently arranged on the upper side of the drill string and / or coaxially with the drill string. Through the rotary union, a fluid connection between the interior of the non-rotating building material hose and the interior of the rotating drill string can be established. In the building material, which is introduced from the building material hose into the interior of the drill string, it can be in particular concrete. The drill drive is used for rotationally driving the drill string about the drilling axis, wherein the rotary feedthrough is expediently arranged on the drilling axis.

Besonders bevorzugt ist es, dass die Dreheinrichtung zum Kompensieren der Drehung des Bohrantriebs gegengleich zum Bohrantrieb synchronisiert ist. Hierunter kann insbesondere verstanden werden, dass die Dreheinrichtung die beiden Leitungsanschlüsse relativ zueinander mit der Drehzahl des Bohrantriebs, aber mit umgekehrter Drehrichtung dreht, so dass sich die Drehbewegungen des Bohrantriebs und der Dreheinrichtung aufheben und der Leitungsanschluss für den Baustoffschlauch auch bei rotierendem Bohrstrang nach außen hin stillsteht. Die Synchronisierung kann insbesondere mittels einer Steuerung erfolgen, welche die Dreheinrichtung, insbesondere einen entsprechenden Antriebsmotor, in Abhängigkeit von Daten über die Drehgeschwindigkeit des Bohrstrangs und/oder Bohrantriebs steuert. Prinzipiell wäre aber auch eine mechanische Synchronisierung denkbar.It is particularly preferred that the rotating means for compensating the rotation of the drill drive is synchronized opposite to the drill drive. This may in particular be understood to mean that the rotary device rotates the two line connections relative to one another with the rotational speed of the drill drive, but with the direction of rotation reversed, so that the rotational movements of the drill drive and the rotary device cancel and the line connection for the building material hose also with the rotating drill string to the outside stationary. The synchronization can in particular be effected by means of a controller which controls the rotary device, in particular a corresponding drive motor, in dependence on data on the rotational speed of the drill string and / or drill drive. In principle, however, a mechanical synchronization would be conceivable.

Grundsätzlich wäre es beispielsweise möglich, die aktive Dreheinrichtung mit mechanischer Energie zu betreiben, welche dem Bohrantrieb entnommen wird und beispielsweise mittels einer flexiblen Welle auf die Dreheinrichtung übertragen wird. Besonders vorteilhaft ist es jedoch, dass die Dreheinrichtung zumindest einen Antriebsmotor zum aktiven Verdrehen des zweiten Leitungsanschlusses relativ zum ersten Leitungsanschluss aufweist. Dieser Antriebsmotor ist für eine besonders kompakte Anordnung geeigneterweise an der Drehdurchführung, also in der Regel an der Oberseite des Bohrstrangs, angeordnet.In principle, it would be possible, for example, to operate the active rotary device with mechanical energy which is taken from the drill drive and transmitted to the rotary device, for example, by means of a flexible shaft. However, it is particularly advantageous that the rotating device has at least one drive motor for actively rotating the second line connection relative to the first line connection. For a particularly compact arrangement, this drive motor is suitably arranged on the rotary feedthrough, that is to say usually on the upper side of the drill string.

Bei dem Antriebsmotor kann es sich beispielsweise um einen Hydraulikmotor handeln, da an einem typischen Bohrgerät üblicherweise ohnehin hydraulische Energie bereitsteht. Bei dem Antriebsmotor kann es sich aber beispielsweise auch um einen Elektromotor handeln, da dieser besonders einfach angesteuert und somit synchronisiert werden kann. Insbesondere kann ein Servomotor als Antriebsmotor der Dreheinrichtung vorgesehen sein. Grundsätzlich können auch mehrere Motortypen, zum Beispiel in Serie, kombiniert werden.The drive motor can be, for example, a hydraulic motor, since hydraulic energy is usually available anyway on a typical drill. The drive motor can, however, also be, for example, an electric motor, since it can be controlled particularly easily and thus synchronized. In particular, a servomotor may be provided as a drive motor of the rotary device. In principle, several types of motor, for example, in series, can be combined.

Zweckmäßigerweise ist nach der Erfindung eine Steuerung für die Dreheinrichtung vorgesehen, insbesondere eine elektronische Steuerung. Mittels einer solchen Steuerung kann in besonders einfacher Weise beispielsweise die gegengleiche Synchronisierung realisiert werden. Sofern ein Antriebsmotor vorgesehen ist, steht die Steuerung zweckmäßigerweise mit diesem Antriebsmotor in Wirkverbindung, so dass die Steuerung dem Antriebsmotor beispielsweise eine Solldrehzahl oder eine Sollposition vorgeben kann.Conveniently, a control for the rotating device is provided according to the invention, in particular an electronic control. By means of such a control, for example, the opposite synchronization can be realized in a particularly simple manner. If a drive motor is provided, the controller is expediently in operative connection with this drive motor, so that the controller can specify, for example, a setpoint speed or a setpoint position to the drive motor.

Weiterhin ist es bevorzugt, dass ein Drehaufnehmer zum Bestimmen der Drehzahl und/oder der Drehrichtung des Bohrstrangs und/oder des Drehantriebs vorgesehen ist, welcher mit der Steuerung in Signalverbindung steht. Hierdurch erhält die Steuerung Eingangsdaten über den Status des Bohrstrangs, so dass sie die Dreheinrichtung entsprechend gegengleich betätigen kann. Die Steuerung für die Dreheinrichtung kann Informationen über den Status des Bohrstrangs aber auch aus anderen Quellen beziehen, beispielsweise aus der Steuerung des Bohrantriebs.Furthermore, it is preferred that a rotary sensor is provided for determining the rotational speed and / or the direction of rotation of the drill string and / or the rotary drive, which is in signal communication with the controller. As a result, the controller receives input data on the status of the drill string, so that they can operate counteracting the rotating device accordingly. The rotator controller may obtain information about the status of the drill string, but also from other sources, such as the drill driver control.

Besonders vorteilhaft ist die Erfindung bei solchen Bohrgeräten einsetzbar, bei denen der Bohrstrang, insbesondere mehrteilig, mit einem unterhalb des Bohrantriebs verlaufenden Werkzeugabschnitt und einer zumindest abschnittsweise oberhalb des Bohrantriebs verlaufenden Verlängerung ausgebildet ist. Denn bei einer derartigen Ausführungsform mit verlängertem Bohrstrang müsste eine gemäß dem Stand der Technik notwendige Drehmomentstütze für den Schlauchanschluss entsprechend weit nach oben verlängert werden, was mit einem entsprechenden Zusatzaufwand einherginge. Da erfindungsgemäß eine solche Drehmomentstütze jedoch entfallen kann, entfällt hier auch dieser Zusatzaufwand.The invention can be used particularly advantageously in drilling apparatuses in which the drill string, in particular in several parts, has a tool section running underneath the drill drive and at least partially above it Drill drive extending extension is formed. For in such an embodiment with an elongated drill string, a torque support for the hose connection which is necessary according to the prior art would have to be extended correspondingly far upwards, which would entail a corresponding additional outlay. However, since according to the invention such a torque support can be omitted, also this additional effort is eliminated here.

Zweckmäßigerweise ist die Drehdurchführung an der Verlängerung angeordnet, insbesondere an der Oberseite der Verlängerung. Am Werkzeugabschnitt kann beispielsweise das Bohrwerkzeug, insbesondere eine Bohrschnecke, bevorzugt eine sogenannte Endlosschnecke, vorgesehen sein.Conveniently, the rotary feedthrough is arranged on the extension, in particular on the upper side of the extension. For example, the drilling tool, in particular a drilling screw, preferably a so-called endless screw, can be provided on the tool section.

Insbesondere dann, wenn eine Verlängerung vorgesehen ist, kann der Bohrstrang zur Bohrtiefenerhöhung axial relativ zum Bohrantrieb verfahrbar gelagert sein. Zweckmäßigerweise ist der Bohrstrang im Bereich der Verlängerung im Bohrantrieb gelagert. Zum aktiven axialen Verfahren des Bohrstrangs kann auch eine entsprechende Antriebseinrichtung vorhanden sein.In particular, if an extension is provided, the drill string for drilling depth increase can be mounted axially movable relative to the drill drive. Conveniently, the drill string is mounted in the drill drive in the region of the extension. For active axial movement of the drill string, a corresponding drive device may also be present.

Besonders vorteilhaft ist es, dass der Bohrantrieb an einer Trägerstruktur angeordnet ist, und dass an der Trägerstruktur ein Übergabeanschluss für den Baustoffschlauch, vorzugsweise drehfest, angeordnet ist. Gemäß diesem Ausführungsbeispiel sind also der Bohrantrieb und der Übergabeanschluss für den Baustoffschlauch an derselben Struktur angeordnet, so dass die Kompensation der Drehbewegung des Bohrantriebs am Schlauch in besonders einfacher Weise möglich ist. Bei der Trägerstruktur kann es sich beispielsweise um einen Mastschlitten handeln. Ein solcher Mastschlitten ist zweckmäßigerweise an einem Mast längsverstellbar gelagert. Unter Umständen kann auch der Mast als die besagte Trägerstruktur angesehen werden. Unter dem Übergabeanschluss kann insbesondere ein Abnahmepunkt verstanden werden, an welchem der Baustoff in die Baustoffleitung einleitbar ist, an welchem also der Baustoffschlauch an eine Fördereinrichtung für den Baustoff, insbesondere an eine zugehörige Förderleitung, anschließbar ist.It is particularly advantageous that the drill drive is arranged on a support structure, and that a transfer connection for the building material hose, preferably non-rotatably, is arranged on the support structure. According to this embodiment, therefore, the drill drive and the transfer port for the building material hose are arranged on the same structure, so that the compensation of the rotational movement of the drill drive on the hose is possible in a particularly simple manner. The carrier structure may be, for example, a mast carriage. Such a mast carriage is expediently mounted longitudinally adjustable on a mast. Under certain circumstances, the mast can be considered as the said support structure. In particular, a transfer point can be understood as the transfer point at which the building material can be introduced into the building material line, to which the building material hose can then be connected to a conveying device for the building material, in particular to an associated delivery line.

Eine weitere vorteilhafte Ausgestaltung der Erfindung besteht darin, dass die Drehdurchführung am Leitungsanschluss für den Baustoffschlauch einen Krümmer aufweist. Hierdurch kann gewährleistet werden, dass der Schlauchleitungsanschluss bei montierter Drehdurchführung zum Boden oder zumindest zur Seite hin weist, so dass der Baustoffschlauch vom Leitungsanschluss ohne Knickbildung frei herunterhängen kann. Insbesondere ist es zweckmäßig, dass der Leitungsanschluss für den Baustoffschlauch achsparallel zum Leitungsanschluss für den Bohrstrang angeordnet ist, wodurch eine besonders zuverlässig einsetzbare Drehdurchführung erhalten wird. Hierzu weist der Krümmer vorzugsweise einen Bogenwinkel von zumindest annähernd 180° auf.A further advantageous embodiment of the invention is that the rotary feedthrough at the line connection for the building material hose has a manifold. In this way, it can be ensured that the hose line connection points with the rotary feedthrough mounted to the floor or at least to the side, so that the building material hose from the pipe connection can hang freely without kinking. In particular, it is expedient that the line connection for the building material hose is arranged axially parallel to the line connection for the drill string, as a result of which a rotary feedthrough which can be used particularly reliably is obtained. For this purpose, the manifold preferably has an arc angle of at least approximately 180 °.

Ferner ist es besonders vorteilhaft, dass der Baustoffschlauch vom Leitungsanschluss für den Baustoffschlauch und/oder vom Übergabeanschluss frei herunterhängt. Insbesondere kann vorgesehen werden, dass der Baustoffschlauch lediglich an den Schlauchenden befestigt ist und im Bereich zwischen den beiden Enden nicht gehaltert und/oder abgestützt ist, also frei hängt. Da erfindungsgemäß die aktive Drehdurchführung dafür sorgen kann, dass sich der Schlauchleitungsanschluss der Drehdurchführung stets in derselben Winkellage bezüglich dem Übergabeanschluss befindet, kann eine Abstützung, insbesondere eine Drehmomentabstützung, des Schlauchs zwischen den Schlauchenden entfallen.Furthermore, it is particularly advantageous for the building material hose to hang down freely from the line connection for the building material hose and / or from the transfer connection. In particular, it can be provided that the building material hose is attached only to the hose ends and is not supported and / or supported in the area between the two ends, ie hangs freely. Since according to the invention the active rotary feedthrough can ensure that the hose line connection of the rotary feedthrough is always in the same angular position with respect to the transfer connection, a support, in particular a torque support, of the hose between the hose ends can be dispensed with.

Es ist darüber hinaus zweckmäßig, dass der Antriebsmotor, vorzugsweise oberhalb des Leitungsanschlusses für den Bohrstrang, an der Drehdurchführung angeordnet ist. Hierdurch wird eine besonders kompakte Anordnung erhalten. Beispielsweise kann vorgesehen sein, dass die Antriebswelle des Antriebsmotors zumindest annähernd parallel zum Bohrstrang und zur Bohrachse verläuft.It is also expedient that the drive motor, preferably above the line connection for the drill string, is arranged on the rotary feedthrough. As a result, a particularly compact arrangement is obtained. For example, it can be provided that the drive shaft of the drive motor extends at least approximately parallel to the drill string and to the drilling axis.

Eine weitere bevorzugte Ausführungsform der Erfindung besteht darin, dass am ersten Leitungsanschluss, also dem Anschluss für den Schlauch, oder am zweiten Leitungsanschluss, also dem Anschluss für den Bohrstrang, eine weitere Drehdurchführung angeschlossen ist. Mittels einer solchen zweiten Drehdurchführung kann gewährleistet werden, dass der Baustoffschlauch auch dann nicht überlastet wird, wenn beispielsweise bei einer Störung die aktive Synchronisierung der ersten, aktiven Drehdurchführung nicht hinreichend genau ausgeführt werden kann. Falls die Drehung des Bohrstrangs also von der ersten Drehdurchführung ungewollt oder gewollt nur teilweise kompensiert wird, kann die verbleibende Differenz in der Drehung zwischen rotierendem Bohrstrang und nichtrotierendem Schlauchleitungsanschluss durch die zweite Drehdurchführung aufgenommen werden. Die weitere Drehdurchführung ist vorzugsweise passiv ausgebildet, enthält also im Gegensatz zur ersten Drehdurchführung keine aktive Dreheinrichtung. Insbesondere können die beiden Drehdurchführungen koaxial angeordnet sein. Alternativ oder zusätzlich zu einer weiteren Drehdurchführung kann zum Schutz des Baustoffschlauchs die erste, aktive Drehdurchführung zwischen den beiden Leitungsanschlüssen eine Rutschkupplung aufweisen.A further preferred embodiment of the invention is that at the first line connection, ie the connection for the hose, or at the second line connection, ie the connection for the drill string, a further rotary feedthrough is connected. By means of such a second rotary feedthrough can be ensured that the building material hose is not overloaded even if, for example, in a fault, the active synchronization of the first active rotary feedthrough can not be performed with sufficient accuracy. If the rotation of the drill string is thus unintentionally or intentionally only partially compensated by the first rotary leadthrough, the remaining difference in the rotation between the rotating drill string and the non-rotating hose connection can be absorbed by the second rotary leadthrough. The further rotary feedthrough is preferably passive, so in contrast to the first Rotary feedthrough no active rotating device. In particular, the two rotary unions can be arranged coaxially. Alternatively or in addition to a further rotary feedthrough, the first active rotary feedthrough between the two line connections can have a friction clutch to protect the building material hose.

Das erfindungsgemäße Verfahren kann insbesondere mittels eines erfindungsgemäßen Bohrgerätes durchgeführt werden. Es zeichnet sich dadurch aus, dass eine Dreheinrichtung zum aktiven Verdrehen des zweiten Leitungsanschlusses relativ zum ersten Leitungsanschluss vorgesehen wird, wobei die Dreheinrichtung gegengleich synchron mit dem Bohrantrieb betrieben wird. Hierdurch wird die Drehung des Bohrstrangs am Schlauchleitungsanschluss kompensiert.The inventive method can be carried out in particular by means of a drilling device according to the invention. It is characterized in that a rotating device is provided for active rotation of the second line connection relative to the first line connection, wherein the rotating device is operated in opposite synchronous with the drill drive. As a result, the rotation of the drill string is compensated at the hose line connection.

Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele näher erläutert, welche schematisch in den beiliegenden Figuren dargestellt sind. Die Figuren zeigen:

Fig. 1
eine Seitenansicht eines erfindungsgemäßen Bohrgerätes;
Fig. 2
eine Detailansicht des Bohrgerätes aus Fig. 1 im Bereich der Drehdurchfüh- rung von der anderen Seite; und
Fig. 3
eine Detailansicht des Bohrgerätes aus Fig. 1 im Bereich der Drehdurchfüh- rung von vorne.
The invention will be explained in more detail below with reference to preferred embodiments, which are shown schematically in the accompanying figures. The figures show:
Fig. 1
a side view of a drilling device according to the invention;
Fig. 2
a detailed view of the drill from Fig. 1 in the area of the rotary union from the other side; and
Fig. 3
a detailed view of the drill from Fig. 1 in the area of the rotary feedthrough from the front.

Die Figuren 1 bis 3 zeigen Ausführungsbeispiele eines erfindungsgemäßen Bohrgerätes.The FIGS. 1 to 3 show exemplary embodiments of a drilling device according to the invention.

Wie Fig. 1 zeigt, weist das als Erdbohrer ausgebildete Bohrgerät ein Fahrgestell 71 auf, welches als Raupenkettenfahrgestell ausgebildet ist. Frontseitig am Fahrgestell 71 ist ein Mast 72 angeordnet, welcher jedenfalls im Bohrbetrieb in der Regel zumindest annähernd senkrecht verläuft. Am Mast 72 ist ein Mastschlitten 40 längsverschiebbar gelagert. An diesem Mastschlitten 40 wiederum ist ein Bohrantrieb 10 zum drehenden Antreiben eines Bohrstrangs 1 vorgesehen.As Fig. 1 shows, designed as a drill auger on a chassis 71, which is designed as a crawler chassis. On the front side of the chassis 71, a mast 72 is arranged, which runs at least approximately perpendicularly in drilling operation in the rule. On the mast 72, a mast carriage 40 is mounted longitudinally displaceable. In turn, a drill drive 10 for rotating a drill string 1 is provided on this mast carriage 40.

Der Bohrstrang 1 weist einen Werkzeugabschnitt 2 auf, der unterhalb des Bohrantriebs 10 verläuft, und an dem eine Bohrschnecke 9 als Werkzeug angeordnet ist. Oberhalb des Werkzeugabschnittes 2 weist der Bohrstrang eine Verlängerung 3 auf. Im Bereich dieser Verlängerung 3 ist der Bohrstrang 1 durch den Bohrantrieb 10 hindurchgeführt. Die Verlängerung 3 ist als sogenannte Kelly-Verlängerung mit außen liegenden, längs des Bohrstrangs 1 verlaufenden Profilleisten 75 ausgebildet. Diese Profilleisten 75 ermöglichen eine formschlüssige Drehmomentübertragung vom Bohrantrieb 10 auf die Verlängerung 3 des Bohrstrangs 1, wobei der Bohrstrang 1 gleichzeitig relativ zum Bohrantrieb 10 längsverfahrbar ist.The drill string 1 has a tool section 2, which extends below the drill drive 10, and on which a drill screw 9 is arranged as a tool. Above the tool section 2, the drill string has an extension 3. In the area of this extension 3, the drill string 1 is passed through the drill drive 10. The extension 3 is formed as a so-called Kelly extension with outer, along the drill string 1 extending profile strips 75. These profile strips 75 enable a positive torque transmission from the drill drive 10 to the extension 3 of the drill string 1, wherein the drill string 1 is simultaneously moved relative to the drill drive 10.

Das Bohrgerät weist ferner einen Baustoffschlauch 6 auf, mittels dem ein Baustoff, insbesondere ein aushärtender Baustoff wie Beton, in das Innere des Bohrstrangs 1 einleitbar ist. Vom Bohrstranginneren kann der Baustoff durch mindestens eine unten am Bohrstrang 1 angeordnete Öffnung 79 entweichen. Diese Anordnung ermöglicht es, ein mit dem Bohrstrang 1 im Boden erzeugtes Bohrloch mit Baustoff zu verfüllen.The drill further has a building material hose 6, by means of which a building material, in particular a hardening building material such as concrete, in the interior of the drill string 1 can be introduced. From the Bohrstranginneren the building material can escape through at least one below the drill string 1 arranged opening 79. This arrangement makes it possible to fill a borehole generated with the drill string 1 in the ground with building material.

Der Baustoffschlauch 6 ist an seinem einen Ende an einem Übergabeanschluss 50 angeschlossen An dieser Stelle kann der Baustoff beispielsweise von einer Fördereinrichtung in den Baustoffschlauch 6 übergeben werden. Der Übergabeanschluss 50 ist drehfest und axial fest am Mastschlitten 40 angeordnet. An seinem gegenüberliegenden oberen Ende ist der Baustoffschlauch 6 an einem Leitungsanschluss 21 angeschlossen, welcher am oberen Ende des Bohrstrangs 1 angeordnet ist. An dieser Stelle kann der Baustoff aus dem Baustoffschlauch 6 in das Bohrstranginnere eingeleitet werden.The building material hose 6 is connected at its one end to a transfer port 50 At this point, the building material can be passed, for example, from a conveyor into the building material hose 6. The transfer connection 50 is rotationally fixed and axially fixedly arranged on the mast carriage 40. At its opposite upper end of the building material hose 6 is connected to a line connection 21, which is arranged at the upper end of the drill string 1. At this point, the building material from the building material hose 6 can be introduced into the Bohrstranginnere.

Der Übergabeanschluss 50 ist endseitig an einem etwa waagerecht verlaufenden Zuführ-Rohrstück 53 ausgebildet, welches über eine zumindest annähernd senkrecht verlaufende Stütze 51 am Mastschlitten 40 gehaltert ist. Über die Stütze 51 sind das Rohrstück 53 sowie sein Übergabeanschluss 50 drehfest und axial fest mit dem Mastschlitten 40 verbunden. Das Rohrstück 53 und sein Übergabeanschluss 50 befinden sich dabei oberhalb des Mastschlittens 40 und oberhalb des Drehantriebs 10. An seinem dem Übergabeanschluss 50 abgewandten Ende weist das Rohrstück 53 einen weiteren Anschluss 54 auf, an welchem beispielsweise ein Zuführschlauch oder eine starre Zuführleitung anschließbar ist, welcher bzw. welche mit einer Baustoffpumpe verbunden ist.The transfer connection 50 is formed at the end on an approximately horizontally extending supply pipe section 53 which is held on the mast carriage 40 via an at least approximately perpendicular support 51. About the support 51, the pipe section 53 and its transfer port 50 rotatably and axially fixed to the mast carriage 40. The pipe section 53 and its transfer connection 50 are located above the mast carriage 40 and above the rotary drive 10. At its end remote from the transfer connection 50, the pipe section 53 has a further connection 54 to which, for example, a supply hose or a rigid supply line can be connected or which is connected to a building material pump.

Der Übergabeanschluss 50 für den Baustoffschlauch 6, der Leitungsanschluss 21 für den Schlauch 6 sowie auch der weitere Anschluss 54 weisen nach unten, das heißt in Richtung der Bohrachse zum Boden hin, so dass dort Schläuche ohne Knickbildung angeschlossen werden können.The transfer connection 50 for the building material hose 6, the line connection 21 for the hose 6 and also the further connection 54 face downwards, that is to say in the direction of the drilling axis to the ground, so that there hoses without kinking can be connected.

Die flexible Ausführung der Leitung 6 als Baustoffschlauch erlaubt es, Abstandsänderungen zwischen dem Leitungsanschluss 21 und dem Übergabeanschluss 50 zu kompensieren, welche beim Verschieben des Bohrstrangs 1 relativ zum Bohrantrieb 10 und damit zum Mastschlitten 40 auftreten.The flexible design of the conduit 6 as building material hose makes it possible to compensate for changes in distance between the conduit connection 21 and the transfer connection 50, which occur when the drill string 1 is displaced relative to the drilling drive 10 and thus to the mast carriage 40.

Der Baustoffschlauch 6 ist über eine erfindungsgemäße Drehdurchführung 20 mit dem Bohrstrang 1 verbunden, welche in den Figuren 2 und 3 im Detail dargestellt ist. Diese Drehdurchführung 20 ist am oberen Ende des Bohrstrangs 1 angeordnet und weist eine Drehachse auf, die koaxial zur Bohrachse, also koaxial zum Bohrstrang 1 verläuft.The building material hose 6 is connected via a rotary feedthrough 20 according to the invention with the drill string 1, which in the Figures 2 and 3 is shown in detail. This rotary feedthrough 20 is arranged at the upper end of the drill string 1 and has an axis of rotation which is coaxial with the drilling axis, that is to say coaxial with the drill string 1.

Wie insbesondere die Figuren 2 und 3 zeigen, ist die erfindungsgemäße Drehdurchführung 20 als aktive Drehdurchführung mit einer aktiven Dreheinrichtung 30 ausgebildet, wobei die Dreheinrichtung 30 einen Antriebsmotor 32 und ein Getriebe 33 aufweist, welches mit dem Antriebsmotor 32 betätigbar ist. Mittels des Antriebsmotors 32 und des zugeordneten Getriebes 33 kann der ersten Leitungsanschluss 21, an welchem der Baustoffschlauch 6 drehfest angeordnet ist, aktiv gegenüber dem zweiten Leitungsabschluss 22, an welchem die Drehdurchführung 20 insbesondere drehfest am Bohrstrang 1 angeschlossen ist, um die Bohrachse verdreht werden.How the particular Figures 2 and 3 show, the rotary feedthrough 20 according to the invention is designed as an active rotary feedthrough with an active rotary device 30, wherein the rotary device 30 has a drive motor 32 and a gear 33 which is operable with the drive motor 32. By means of the drive motor 32 and the associated gear 33, the first line connection 21, on which the building material hose 6 is arranged rotatably, active against the second line termination 22, to which the rotary feedthrough 20 in particular rotatably connected to the drill string 1, are rotated about the drilling axis.

Für eine besonders kompakte Anordnung ist der Antriebsmotor 32 oberhalb des Leitungsanschlusses 22 für den Bohrstrang 1 und oberhalb des Getriebes 33 angeordnet. Am Antriebsmotor 32 sind Betriebs- und Kontrollleitungen 35 angeschlossen, welche zum Fahrgestell 71 führen.For a particularly compact arrangement, the drive motor 32 is arranged above the line connection 22 for the drill string 1 and above the transmission 33. On the drive motor 32 operating and control lines 35 are connected, which lead to the chassis 71.

Beim erfindungsgemäßen Verfahren wird die aktive Drehdurchführung 20 synchronisiert gegenläufig zum Bohrantrieb 10 betätigt. Dabei erzeugt der Antriebsmotor 32 aktiv eine relative Drehbewegung der beiden Leitungsanschlüsse 21 und 22 zueinander, welche dieselbe Drehzahl, aber die umgekehrte Drehrichtung verglichen mit dem Bohrantrieb 10 aufweist. Infolgedessen kompensiert die aktive Drehdurchführung 20 die durch den Bohrantrieb 10 bewirkte Drehung des Bohrstrangs 1, so dass der Leitungsanschluss 21 für den Baustoffschlauch 6 auch dann stets in dieselbe Richtung weist und nicht rotiert, wenn der Bohrantrieb 10 den Bohrstrang 1 und somit den zweiten Leitungsanschluss 22 drehend betätigt.In the method according to the invention, the active rotary feedthrough 20 is actuated synchronized in opposite directions to the drill drive 10. In this case, the drive motor 32 actively generates a relative rotational movement of the two line connections 21 and 22 to each other, which has the same speed, but the reverse direction of rotation compared to the drill drive 10. As a result, compensates the active rotary feedthrough 20 caused by the drill drive 10 rotation of the drill string 1, so that the line connection 21 for the building material hose 6 and then always in the same Direction points and not rotated when the drill drive 10, the drill string 1 and thus the second line connection 22 rotatably actuated.

Um eine solche gegenläufige Synchronisation zu realisieren, ist eine in Fig. 1 schematisch dargestellte Steuerung 39 vorgesehen, welche mit der Dreheinrichtung 30 und insbesondere mit ihrem Antriebsmotor 32 oder ihrem Getriebe 33 in Wirkverbindung steht. Diese Steuerung 39 steht überdies mit einem Drehaufnehmer 38 in Signalverbindung, welcher die Drehung des Bohrstrangs 1 relativ zum Mastschlitten 40 und somit relativ zum Fahrgestell 71 erfasst. Dieser Drehaufnehmer 38 liefert die Eingangsgröße für die Steuerung 39.To realize such an opposite synchronization is an in Fig. 1 schematically shown control 39 is provided, which is in operative connection with the rotating device 30 and in particular with its drive motor 32 or its transmission 33. This controller 39 is also in signal communication with a rotary sensor 38, which detects the rotation of the drill string 1 relative to the mast carriage 40 and thus relative to the chassis 71. This rotary sensor 38 provides the input to the controller 39.

Im Bereich des Leitungsanschlusses 22 für den Bohrstrang 1 kann eine weitere Drehdurchführung 70 vorgesehen sein, die verbleibende Differenzen in der Drehposition zwischen Bohrstrang 1 und Schlauch 6 aufnehmen kann.In the area of the line connection 22 for the drill string 1, a further rotary feedthrough 70 can be provided, which can accommodate remaining differences in the rotational position between the drill string 1 and the hose 6.

Die Drehdurchführung 20 weist einen Krümmer 60 auf, welcher einen Rohrbogen um etwa 180° bildet. Endseitig an diesem Krümmer 60 ist der Leitungsanschluss 21 für den Baustoffschlauch 6 ausgebildet. Mittels des Krümmers ist der Leitungsanschluss 21 für den Baustoffschlauch 6 nach unten gerichtet angeordnet, so dass der angeschlossene Baustoffschlauch 6 dort ohne Knickbildung einlaufen kann.The rotary feedthrough 20 has a manifold 60, which forms a pipe bend by about 180 °. End of this manifold 60, the line connection 21 is formed for the building material hose 6. By means of the manifold, the line connection 21 for the building material hose 6 is arranged directed downwards, so that the connected building material hose 6 can enter there without kinking.

Claims (12)

Bohrgerät zur Bodenbearbeitung mit - einem Bohrantrieb (10) zum drehenden Antreiben eines Bohrstrangs (1) und - einer Drehdurchführung (20) zum Durchleiten eines Baustoffs aus einem Baustoffschlauch (6) in das Innere des Bohrstrangs (1), wobei die Drehdurchführung (20) einen ersten Leitungsanschluss (21) für den Baustoffschlauch (6) und einen relativ zum ersten Leitungsanschluss (21) drehbaren zweiten Leitungsanschluss (22) für den Bohrstrang (1) aufweist, dadurch gekennzeichnet, - dass die Drehdurchführung (20) eine Dreheinrichtung (30) zum aktiven Verdrehen des zweiten Leitungsanschlusses (22) relativ zum ersten Leitungsanschluss (21) aufweist. Drilling rig for soil tillage with - A drill drive (10) for rotationally driving a drill string (1) and - A rotary feedthrough (20) for passing a building material from a building material hose (6) in the interior of the drill string (1), wherein the rotary feedthrough (20) has a first line connection (21) for the building material hose (6) and a relative to the first line connection ( 21) has a rotatable second conduit connection (22) for the drill string (1), characterized in that - That the rotary feedthrough (20) has a rotating device (30) for actively rotating the second line connection (22) relative to the first line connection (21). Bohrgerät nach Anspruch 1,
dadurch gekennzeichnet,
dass die Dreheinrichtung (30) zum Kompensieren der Drehung des Bohrantriebs (10) gegengleich zum Bohrantrieb (10) synchronisiert ist.Drilling device according to claim 1,
characterized,
in that the rotary device (30) is synchronized with the drill drive (10) in order to compensate for the rotation of the drill drive (10). Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass die Dreheinrichtung (30) zumindest einen Antriebsmotor (32) zum aktiven Verdrehen des zweiten Leitungsanschlusses (22) relativ zum ersten Leitungsanschluss (21) aufweist.Drilling device according to one of the preceding claims,
characterized,
that the rotary device (30) (21) comprises at least one drive motor (32) for actively rotating the second line connection (22) relative to the first line connection. Bohrgerät nach Anspruch 3,
dadurch gekennzeichnet,
dass der Antriebsmotor (32) ein Elektromotor oder ein Hydraulikmotor ist.Drilling device according to claim 3,
characterized,
that the drive motor (32) is an electric motor or a hydraulic motor. Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass eine Steuerung (39) für die Dreheinrichtung (30) vorgesehen ist, und dass ein Drehaufnehmer (38) zum Bestimmen der Drehzahl und/oder der Drehrichtung des Bohrstrangs (1) vorgesehen ist, welcher mit der Steuerung (39) in Signalverbindung steht.Drilling device according to one of the preceding claims,
characterized,
in that a control device (39) is provided for the rotary device (30), and in that a rotary sensor (38) is provided for determining the rotational speed and / or the direction of rotation of the drill string (1), which is in signal connection with the control (39). Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass der Bohrstrang (1) mit einem unterhalb des Bohrantriebs (10) verlaufenden Werkzeugabschnitt (2) und einer zumindest abschnittsweise oberhalb des Bohrantriebs (10) verlaufenden Verlängerung (3) ausgebildet ist,
dass die Drehdurchführung (20) an der Verlängerung (3) angeordnet ist, und dass am Werkzeugabschnitt (2) eine Bohrschnecke (9) vorgesehen ist.Drilling device according to one of the preceding claims,
characterized,
in that the drill string (1) is formed with a tool section (2) extending below the drill drive (10) and an extension (3) running at least in sections above the drill drive (10),
in that the rotary feedthrough (20) is arranged on the extension (3), and in that a drilling screw (9) is provided on the tool section (2). Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass der Bohrantrieb (10) an einer Trägerstruktur, insbesondere einem Mastschlitten (40), angeordnet ist, und
dass an der Trägerstruktur ein Übergabeanschluss (50) für den Baustoffschlauch (6) angeordnet ist.Drilling device according to one of the preceding claims,
characterized,
in that the drill drive (10) is arranged on a support structure, in particular a mast carriage (40), and
that a transfer port (50) for the construction material hose (6) is arranged on the support structure. Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass die Drehdurchführung (20) am Leitungsanschluss (21) für den Baustoffschlauch (6) einen Krümmer (60) aufweist, und
dass der Leitungsanschluss (21) für den Baustoffschlauch (6) achsparallel zum Leitungsanschluss (22) für den Bohrstrang (1) angeordnet ist.Drilling device according to one of the preceding claims,
characterized,
that the rotary feedthrough (20) at the line connection (21) for the building material hose (6) has a manifold (60), and
that the line connection (21) for the construction material hose (6) axially arranged to line connection (22) for the drill string (1). Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass der Baustoffschlauch (6) vom Leitungsanschluss (21) für den Baustoffschlauch (6) frei herunterhängt.Drilling device according to one of the preceding claims,
characterized,
that the construction material hose (6) from the line connection (21) for the construction material hose (6) hanging down freely. Bohrgerät nach einem der Ansprüche 3 bis 9,
dadurch gekennzeichnet,
dass der Antriebsmotor (32) oberhalb des Leitungsanschlusses (22) für den Bohrstrang (1) an der Drehdurchführung (20) angeordnet ist.Drilling device according to one of claims 3 to 9,
characterized,
in that the drive motor (32) is arranged above the line connection (22) for the drill string (1) on the rotary leadthrough (20). Bohrgerät nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass am ersten Leitungsanschluss (21) oder am zweiten Leitungsanschluss (22) eine weitere Drehdurchführung (70) angeschlossen ist oder/und dass die Drehdurchführung (20) zwischen den beiden Leitungsanschlüssen (21 und 22) eine Rutschkupplung aufweist.Drilling device according to one of the preceding claims,
characterized,
in that a further rotary feedthrough (70) is connected to the first line connection (21) or to the second line connection (22) and / or that the rotary feedthrough (20) has a slip clutch between the two line connections (21 and 22). Verfahren zur Bodenbearbeitung, insbesondere mittels eines Bohrgerätes nach einem der vorstehenden Ansprüche, bei dem - ein Bohrstrang (1) mittels eines Bohrantriebs (10) in eine Drehbewegung versetzt wird, und - über eine Drehdurchführung (20), welche an einem ersten Leitungsanschluss (21) an einem Baustoffschlauch (6) angeschlossen und an einem relativ zum ersten Leitungsanschluss (21) drehbaren zweiten Leitungsanschluss (22) am Bohrstrang (1) angeschlossen ist, zumindest zeitweise flüssiger Baustoff aus dem Baustoffschlauch (6) in das Innere des Bohrstrangs (1) eingeleitet wird,
dadurch gekennzeichnet, - dass eine Dreheinrichtung (30) zum aktiven Verdrehen des zweiten Leitungsanschlusses (22) relativ zum ersten Leitungsanschluss (21) vorgesehen wird, wobei - die Dreheinrichtung (30) gegengleich synchron mit dem Bohrantrieb (10) betrieben wird. Method for soil preparation, in particular by means of a drilling apparatus according to one of the preceding claims, in which - A drill string (1) by means of a drill drive (10) is set in a rotational movement, and - Via a rotary feedthrough (20), which at a first line connection (21) connected to a building material hose (6) and at a relative to the first line connection (21) rotatable second line connection (22) is connected to the drill string (1), at least temporarily liquid Building material from the building material hose (6) is introduced into the interior of the drill string (1),
characterized, - That a rotating device (30) for actively rotating the second line connection (22) is provided relative to the first line connection (21), wherein - The rotating device (30) is operated in synchronism with the drill drive (10).
EP09011061A 2009-08-28 2009-08-28 Drilling apparatus and method of making piles in a soil Not-in-force EP2295645B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP09011061A EP2295645B1 (en) 2009-08-28 2009-08-28 Drilling apparatus and method of making piles in a soil
PL09011061T PL2295645T3 (en) 2009-08-28 2009-08-28 Drilling apparatus and method of making piles in a soil
EA201001141A EA017425B1 (en) 2009-08-28 2010-08-10 Drilling apparatus and method for working the ground
US12/857,823 US8550187B2 (en) 2009-08-28 2010-08-17 Drilling apparatus and method for working the ground
AU2010212434A AU2010212434B2 (en) 2009-08-28 2010-08-19 Drilling apparatus and method for working the ground
BRPI1002744-0A BRPI1002744A2 (en) 2009-08-28 2010-08-19 drilling rig and process for working the soil
JP2010186767A JP5044682B2 (en) 2009-08-28 2010-08-24 Excavator and civil engineering method
UAA201010439A UA98532C2 (en) 2009-08-28 2010-08-27 A drilling machine
CN2010102687284A CN102002940B (en) 2009-08-28 2010-08-27 Drilling apparatus and method for working the ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09011061A EP2295645B1 (en) 2009-08-28 2009-08-28 Drilling apparatus and method of making piles in a soil

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EP2295645A1 true EP2295645A1 (en) 2011-03-16
EP2295645B1 EP2295645B1 (en) 2012-05-16

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EP (1) EP2295645B1 (en)
JP (1) JP5044682B2 (en)
CN (1) CN102002940B (en)
AU (1) AU2010212434B2 (en)
BR (1) BRPI1002744A2 (en)
EA (1) EA017425B1 (en)
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EA201001141A1 (en) 2011-04-29
JP5044682B2 (en) 2012-10-10
CN102002940A (en) 2011-04-06
EP2295645B1 (en) 2012-05-16
BRPI1002744A2 (en) 2012-05-29
CN102002940B (en) 2012-10-10
EA017425B1 (en) 2012-12-28
US8550187B2 (en) 2013-10-08
PL2295645T3 (en) 2012-09-28
US20110048805A1 (en) 2011-03-03
AU2010212434B2 (en) 2011-08-04
UA98532C2 (en) 2012-05-25
AU2010212434A1 (en) 2011-03-17
JP2011047268A (en) 2011-03-10

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