EP2236734B1 - Drive unit with alignment means - Google Patents

Drive unit with alignment means Download PDF

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Publication number
EP2236734B1
EP2236734B1 EP09004988A EP09004988A EP2236734B1 EP 2236734 B1 EP2236734 B1 EP 2236734B1 EP 09004988 A EP09004988 A EP 09004988A EP 09004988 A EP09004988 A EP 09004988A EP 2236734 B1 EP2236734 B1 EP 2236734B1
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EP
European Patent Office
Prior art keywords
drive
carriage
pipe drive
tube drive
fastening
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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.)
Not-in-force
Application number
EP09004988A
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German (de)
French (fr)
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EP2236734A1 (en
Inventor
Peter Josef Unglert
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
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Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to AT09004988T priority Critical patent/ATE520857T1/en
Priority to EP09004988A priority patent/EP2236734B1/en
Priority to ES09004988T priority patent/ES2367556T3/en
Publication of EP2236734A1 publication Critical patent/EP2236734A1/en
Application granted granted Critical
Publication of EP2236734B1 publication Critical patent/EP2236734B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/002—Drilling with diversely driven shafts extending into the borehole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/022—Top drives
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods

Definitions

  • the invention relates to a drive unit for a drilling or construction equipment according to the preamble of claim 1.
  • Such a drive unit has a carriage, which is designed for the method on a mast of the drilling or construction equipment along a track axis.
  • the drive unit further includes an outer tube drive for rotatably driving a first tubular drill string about a first longitudinal axis and an inner tube drive for rotationally driving a second drill string disposed within the first drill string about a second longitudinal axis.
  • the outer tube drive and the inner tube drive are arranged on the carriage and the two longitudinal axes are substantially coaxial with each other and form a common drilling axis.
  • the invention further relates to a drilling or construction equipment with a mast.
  • a generic drive unit is for example from the DE 10 2006 059 171 B3 or the DE 44 02 487 A1 out.
  • Double head drilling is a drilling method in which two generally counter-rotating auger drives, namely an outer tube drive and an inner tube drive, simultaneously rotate an outer drill string and an inner drill string.
  • the outer drill string is usually a hollow tube, which may also be referred to as a drill pipe.
  • the inner drill string is concentrically disposed within the drill pipe and may include, for example, a drill bit.
  • the drilling tool formed from outer drill pipe and inner drill rod which can also be referred to as a double rod, has a high rigidity. Double-head drilling is therefore preferred in the production of overcut bored pile walls.
  • the invention is therefore based on the object to provide a drive unit for a drilling or construction equipment and a corresponding drilling or construction equipment, which have the lowest possible load on the bearing of the auger drives.
  • the drive unit according to the invention is characterized in that an adjusting device is provided, with which an alignment of at least one of the longitudinal axes of the outer tube drive or the inner tube drive to the travel axis of the carriage is variable and adjustable.
  • the invention is based on the recognition that in operation the components are not exactly aligned, which leads to a forced gear.
  • an angled or staggered position of the longitudinal axis of the outer tube drive and / or the longitudinal axis of the inner tube drive to the travel axis of the carriage can lead to a significantly increased bearing load on the corresponding drill drive.
  • a basic idea of the invention is therefore to readjust by means of an adjusting device at least the longitudinal axis of the outer tube drive or the longitudinal axis of the inner tube drive to the travel axis of the carriage in the millimeter or centimeter range, so that they run as parallel as possible.
  • an adjusting device at least the longitudinal axis of the outer tube drive or the longitudinal axis of the inner tube drive to the travel axis of the carriage in the millimeter or centimeter range, so that they run as parallel as possible.
  • the longitudinal axis of a drill drive but both longitudinal axes are aligned to the travel axis of the carriage.
  • the common drilling axis is substantially parallel to the travel axis the carriage, which in turn runs substantially parallel to a longitudinal axis of the mast.
  • the outer tube drive and / or the inner tube drive is mounted on the carriage about a transverse axis which is substantially perpendicular to the travel axis of the carriage, pivotably.
  • the drilling drives can be mounted, for example, in each case via two rod-like or wave-like suspensions on the carriage. These suspensions thus form an axis of rotation about which the drilling drives are rotatable or pivotable.
  • the transverse axis preferably runs parallel to a guide surface between the carriage and the mast.
  • the adjusting device comprises adjusting means, in particular adjusting screws and / or adjusting cylinders, for adjusting the outer tube drive and / or the inner tube drive relative to the carriage.
  • the adjusting means are preferably connected on the one hand to the carriage and on the other hand to the corresponding drill drive, so that the outer tube drive and the inner tube drive can each be pivoted independently relative to the carriage.
  • the adjusting means can in principle be designed as desired. However, it is particularly preferred if the adjusting means have adjusting screws, because they allow by their thread a particularly fine adjustment of the outer tube drive or the inner tube drive.
  • the auger drives are exposed to great forces during their operation. It is therefore preferred according to the invention that fastening means, in particular fastening screws and / or fastening bolts, are provided, with which the outer tube drive and / or the inner tube drive can be fixed in a defined orientation on the carriage. Appropriately, the outer tube drive or the inner tube drive can be pivoted by means of the adjusting device in the desired orientation and then fixed by means of the fastening means in this position. In the operation of the drilling or construction equipment, the adjusting device is thus exposed to no greater forces, so that the Justification must be dimensioned only for the purpose of pivoting the corresponding drill drive.
  • fastening means in particular fastening screws and / or fastening bolts
  • a structurally particularly simple and at the same time reliable fixing is achieved in that a flange fastening is provided for fastening the outer tube drive to the slide, which has a flange element with through holes and fastening means, in particular fastening screws and / or fastening bolts.
  • the fastening means in particular fastening screws and / or fastening bolts are arranged with play in the through holes.
  • the through holes are adapted in their shape to the path of movement of the fastening means and designed, for example, ring-segment-shaped.
  • the flange element with the through-holes is rigidly connected to the carriage.
  • the attachment means are fixed or releasably connected to the corresponding drill drive and passed through the through holes in the flange. Upon pivoting of the corresponding drill drive, the fasteners move within the fixed through holes of the flange.
  • the flange element with the through-holes is rigidly connected to the outer tube drive and / or the inner tube drive. Accordingly, the fastening means are fixedly or detachably connected to the carriage and through the through holes in the flange member passed. Upon pivoting of the corresponding drill drive, the through-holes of the flange member move around the fixed fasteners.
  • each drill drive can be pivoted independently of the slide.
  • the outer tube drive and the inner tube drive are mounted on at least one common mounting flange. By pivoting this mounting flange outer tube drive and inner tube drive are pivoted together, so that in a simple way an alignment of the common drilling axis can be done to the travel axis of the carriage.
  • a further possibility for joint pivoting of outer tube drive and inner tube drive can be achieved in that the inner tube drive is connected via a substantially rigid connecting element with the outer tube drive, wherein the inner tube drive is pivotable together with the outer tube drive.
  • the connecting element may for example comprise a connecting frame, a connecting plate or a plurality of connecting arms, which are arranged substantially between the outer tube drive and the inner tube drive and in each case firmly connected thereto.
  • the inner tube drive by means of the adjusting device relative to the outer tube drive is pivotable.
  • the longitudinal axes of outer tube drive and inner tube drive can be adjusted on the one hand together to the travel axis of the carriage or to the longitudinal axis of the mast.
  • the inner tube drive can be additionally adjusted to the outer tube drive.
  • first adjusting means are provided, which are connected on the one hand with the carriage and on the other hand with the outer tube drive.
  • second adjusting means are provided, which are connected on the one hand with the outer tube drive and on the other hand with the inner tube drive.
  • First and second adjusting means are preferably each adjusting screws and / or adjusting cylinder.
  • a measuring device is provided for determining the orientations of the outer tube drive and / or the inner tube drive.
  • the drilling or construction equipment with a mast is characterized in that a drive unit according to one of claims 1 to 10 is arranged longitudinally displaceably on the mast. This results in the advantages discussed in connection with the drive unit.
  • the drive unit 10 shown in the figure has a carriage 20, which is provided for arrangement on a mast, not shown, of a drilling or construction equipment.
  • the drive unit 10 further comprises two auger drives, namely an outer tube drive 30 for rotationally driving a first drilling element and an inner tube drive 40 for rotationally driving a second drilling element.
  • the carriage is displaceably mounted along a travel axis 12 on the mast.
  • the guide of the carriage 20 on the mast by means of guide surfaces, which are formed on the carriage 20 and designed to rest against a corresponding mating surface of the mast.
  • the illustrated carriage 20 includes a carriage bottom 22 and a carriage top 24.
  • the carriage bottom part 22 is provided for placement on the mast of the drilling or construction equipment.
  • the corresponding guide surfaces are located on a rear side of the slide lower part 22 and, in the illustrated embodiment, are designed as guide claws 26.
  • the auger drives are arranged on the carriage upper part 24.
  • the outer tube drive 30 is arranged in a lower region of the carriage upper part 24 in the direction of the borehole to be created and serves for the rotational driving of a first, tubular drill string.
  • the inner tube drive 40 is arranged in an upper region of the carriage upper part 24 remote from the borehole and serves for rotationally driving an upwardly projecting second solid drill rod, which may be formed, for example, with a drill spiral.
  • Outer tube drive 30 and inner tube drive 40 are arranged substantially in extension to each other, so that a longitudinal axis of the outer tube drive 30 and a longitudinal axis of the inner tube drive 40 are substantially coaxially aligned with each other and form a common drilling axis 14, but also some deviations may occur.
  • the carriage upper part 24 is pivotable relative to the carriage base 22 for maintenance purposes and / or for fitting with drill rods or other drilling elements.
  • a pivoting cylinder 28 is provided, which is articulated on the one hand to the slide base 22 and on the other hand on the carriage upper part 24.
  • the carriage upper part 24 is pivotable relative to the carriage lower part 22 about a pivot axis 17.
  • the pivot axis 17 extends parallel to the guide surfaces and parallel to a mast front side, on which the carriage 20 is slidably mounted.
  • an adjusting device is provided, which allows a fine adjustment of the longitudinal axes.
  • first set screws 50 are provided which are connected on the one hand to the carriage 20 and on the other hand with the outer tube drive 30 and allow fine adjustment.
  • the adjusting screws 50 with an adjusting flange 52 of the outer tube drive 30, for example via a threaded engaged.
  • the adjusting flange 52 is fixedly connected to the outer tube drive 30.
  • the outer tube drive 30 can be fastened to the carriage 20 via a flange attachment 60 for this purpose.
  • the flange attachment 60 comprises a flange element with through-holes, in which fastening screws 62 are accommodated for fastening the outer tube drive 30 to the carriage 20.
  • the through-holes of the flange member have a diameter which is larger than the outer diameter of the fixing screws 62, so that the fixing screws 62 are accommodated with clearance in the through-holes and allow some pivoting before tightening.
  • the inner tube drive 40 is rigidly connected to the outer tube drive 30 via a connecting element 70, so that the inner tube drive 40 is pivoted together with the outer tube drive 30 when pivoting.
  • the adjusting device For adjusting the inner tube drive 40 relative to the outer tube drive, the adjusting device has second adjusting screws 51, which are connected in the illustrated embodiment on the one hand with the connecting element 70 and on the other hand with the inner tube drive 40.
  • the second set screws 51 for adjusting the inner tube drive 40 as shown above, but also be connected to the carriage 20, so that both auger drives are independently adjustable.
  • Storage and attachment of the inner tube drive 40 can be carried out in basically the same way as the storage and attachment of the outer tube drive 30.
  • the longitudinal axes of an outer tube drive and an inner tube drive can be aligned in a simple and precise manner to the travel axis 12 of the carriage 20 and the desired drilling axis and brought into alignment with each other.
  • forces occurring in the bearings of the auger drives can be reduced, whereby the wear on the corresponding parts is reduced.

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

Abstract

The unit (10) has a carriage (20) for moving a mast of a boring or construction device along a moving axis (12). External and interior tubing drives (30, 40) are provided for driving two tubular drill pipes around two longitudinal axes, respectively. Two drives are arranged on the carriage around a transverse axis (16) that runs perpendicular to the moving axis. The longitudinal axes run coaxially to each other to form a common drilling axle (14). An adjusting device adjusts one of the longitudinal axes of the two drives and changes the moving axis of the carriage.

Description

Die Erfindung betrifft eine Antriebseinheit für ein Bohr- oder Baugerät gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a drive unit for a drilling or construction equipment according to the preamble of claim 1.

Eine solche Antriebseinheit weist einen Schlitten auf, welcher zum Verfahren an einem Mast des Bohr- oder Baugeräts entlang einer Verfahrachse ausgebildet ist. Die Antriebseinheit umfasst ferner einen Außenrohrantrieb zum drehenden Antreiben eines ersten, rohrförmigen Bohrgestänges um eine erste Längsachse und einen Innenrohrantrieb zum drehenden Antreiben eines zweiten Bohrgestänges, welches innerhalb des ersten Bohrgestänges angeordnet ist, um eine zweite Längsachse. Der Außenrohrantrieb und der Innenrohrantrieb sind auf dem Schlitten angeordnet und die beiden Längsachsen verlaufen im Wesentlichen koaxial zueinander und bilden eine gemeinsame Bohrachse.Such a drive unit has a carriage, which is designed for the method on a mast of the drilling or construction equipment along a track axis. The drive unit further includes an outer tube drive for rotatably driving a first tubular drill string about a first longitudinal axis and an inner tube drive for rotationally driving a second drill string disposed within the first drill string about a second longitudinal axis. The outer tube drive and the inner tube drive are arranged on the carriage and the two longitudinal axes are substantially coaxial with each other and form a common drilling axis.

Die Erfindung betrifft ferner ein Bohr- oder Baugerät mit einem Mast.The invention further relates to a drilling or construction equipment with a mast.

Eine gattungsgemäße Antriebseinheit geht beispielsweise aus der DE 10 2006 059 171 B3 oder der DE 44 02 487 A1 hervor.A generic drive unit is for example from the DE 10 2006 059 171 B3 or the DE 44 02 487 A1 out.

Antriebseinheiten der oben genannten Art werden insbesondere beim sogenannten Doppelkopfbohren eingesetzt. Das Doppelkopfbohren ist ein Bohrverfahren, bei welchem zwei in der Regel gegenläufig drehende Bohrantriebe, nämlich ein Außenrohrantrieb und ein Innenrohrantrieb, gleichzeitig ein äußeres Bohrgestänge und ein inneres Bohrgestänge drehend antreiben. Das äußere Bohrgestänge ist üblicherweise ein Hohlrohr, welches auch als Bohrrohr bezeichnet werden kann. Das innere Bohrgestänge ist konzentrisch in dem Bohrrohr angeordnet und kann beispielsweise eine Bohrwendel aufweisen.Drive units of the above type are used in particular in so-called double-head drilling. Double head drilling is a drilling method in which two generally counter-rotating auger drives, namely an outer tube drive and an inner tube drive, simultaneously rotate an outer drill string and an inner drill string. The outer drill string is usually a hollow tube, which may also be referred to as a drill pipe. The inner drill string is concentrically disposed within the drill pipe and may include, for example, a drill bit.

Das aus äußerem Bohrrohr und innerer Bohrstange gebildete Bohrwerkzeug, welches auch als Doppelgestänge bezeichnet werden kann, weist eine hohe Steifigkeit auf. Das Doppelkopfbohren wird daher bevorzugt bei der Herstellung von überschnittenen Bohrpfahlwänden eingesetzt.The drilling tool formed from outer drill pipe and inner drill rod, which can also be referred to as a double rod, has a high rigidity. Double-head drilling is therefore preferred in the production of overcut bored pile walls.

Bei den beschriebenen Antriebseinheiten und den entsprechenden Bohr- oder Baugeräten tritt aufgrund der hohen Belastungen, welche sich durch die gegenläufige Drehung von äußerem und innerem Bohrgestänge ergeben, ein hoher Verschleiß an den Bohrantrieben, insbesondere an deren Lagern, auf.In the described drive units and the corresponding drilling or construction equipment occurs due to the high loads, which result from the opposite rotation of the outer and inner drill pipe, high wear on the drill drives, especially at their camps on.

Aus der US 4,878,546 ist ein schwenkbarer Kopfantrieb für eine Bohrvorrichtung bekannt. Hierdurch ist eine Ausrichtung des Kopfantriebs an eine Längsachse eines Bohrrohres möglich.From the US 4,878,546 is a pivotable head drive for a drilling known. As a result, an alignment of the head drive to a longitudinal axis of a drill pipe is possible.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Antriebseinheit für ein Bohr- oder Baugerät und ein entsprechendes Bohr- oder Baugerät bereitzustellen, welche eine möglichst geringe Belastung der Lager der Bohrantriebe aufweisen.The invention is therefore based on the object to provide a drive unit for a drilling or construction equipment and a corresponding drilling or construction equipment, which have the lowest possible load on the bearing of the auger drives.

Die Aufgabe wird erfindungsgemäß durch eine Antriebseinheit mit den Merkmalen des Anspruchs 1 und ein Bohr- oder Baugerät mit den Merkmalen des Anspruchs 11 gelöst. Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.The object is achieved by a drive unit with the features of claim 1 and a drilling or construction equipment with the features of claim 11. Preferred embodiments are given in the dependent claims.

Die erfindungsgemäße Antriebseinheit ist dadurch gekennzeichnet, dass eine Justiereinrichtung vorgesehen ist, mit welcher eine Ausrichtung zumindest einer der Längsachsen des Außenrohrantriebs oder des Innenrohrantriebs zu der Verfahrachse des Schlittens veränderbar und einstellbar ist.The drive unit according to the invention is characterized in that an adjusting device is provided, with which an alignment of at least one of the longitudinal axes of the outer tube drive or the inner tube drive to the travel axis of the carriage is variable and adjustable.

Die Erfindung beruht auf der Erkenntnis, dass im Betrieb die Komponenten nicht exakt ausgerichtet sind, was zu einem Zwangsgang führt. Insbesondere eine abgewinkelte oder versetzte Lage der Längsachse des Außenrohrantriebs und/oder der Längsachse des Innenrohrantriebs zu der Verfahrachse des Schlittens kann zu einer erheblich erhöhten Lagerbelastung an dem entsprechenden Bohrantrieb führen.The invention is based on the recognition that in operation the components are not exactly aligned, which leads to a forced gear. In particular, an angled or staggered position of the longitudinal axis of the outer tube drive and / or the longitudinal axis of the inner tube drive to the travel axis of the carriage can lead to a significantly increased bearing load on the corresponding drill drive.

Ein Grundgedanke der Erfindung besteht daher darin, mittels einer Justiereinrichtung zumindest die Längsachse des Außenrohrantriebs oder die Längsachse des Innenrohrantriebs zu der Verfahrachse des Schlittens im Millimeter- oder Zentimeterbereich nachzurichten, so dass diese möglichst parallel verlaufen. Vorteilhafterweise ist nicht nur die Längsachse eines Bohrantriebs, sondern sind beide Längsachsen zur Verfahrachse des Schlittens ausrichtbar. Nach Ausrichtung der Längsachsen der Bohrantriebe ist die gemeinsame Bohrachse im Wesentlichen parallel zur Verfahrachse des Schlittens, welche wiederum im Wesentlichen parallel zu einer Längsachse des Mastes verläuft.A basic idea of the invention is therefore to readjust by means of an adjusting device at least the longitudinal axis of the outer tube drive or the longitudinal axis of the inner tube drive to the travel axis of the carriage in the millimeter or centimeter range, so that they run as parallel as possible. Advantageously not only the longitudinal axis of a drill drive, but both longitudinal axes are aligned to the travel axis of the carriage. After alignment of the longitudinal axes of the auger drives the common drilling axis is substantially parallel to the travel axis the carriage, which in turn runs substantially parallel to a longitudinal axis of the mast.

Besonders bevorzugt ist es nach der Erfindung, wenn der Außenrohrantrieb und/oder der Innenrohrantrieb an dem Schlitten um eine Querachse, welche im Wesentlichen senkrecht zur Verfahrachse des Schlittens verläuft, verschwenkbar gelagert ist. Hierzu können die Bohrantriebe beispielsweise jeweils über zwei stangen- oder wellenartige Aufhängungen an dem Schlitten gelagert sein. Diese Aufhängungen bilden somit eine Drehachse, um welche die Bohrantriebe drehbar oder schwenkbar sind. Die Querachse verläuft bevorzugt parallel zu einer Führungsfläche zwischen Schlitten und Mast. Hierdurch können insbesondere Verkippungen der Bohrantriebe in Richtung zur Führungsfläche beziehungsweise zum Mast ausgeglichen werden.It is particularly preferred according to the invention, when the outer tube drive and / or the inner tube drive is mounted on the carriage about a transverse axis which is substantially perpendicular to the travel axis of the carriage, pivotably. For this purpose, the drilling drives can be mounted, for example, in each case via two rod-like or wave-like suspensions on the carriage. These suspensions thus form an axis of rotation about which the drilling drives are rotatable or pivotable. The transverse axis preferably runs parallel to a guide surface between the carriage and the mast. As a result, in particular tilting of the drilling drives in the direction of the guide surface or the mast can be compensated.

Eine bevorzugte Ausführungsform der Erfindung liegt darin, dass die Justiereinrichtung Stellmittel, insbesondere Stellschrauben und/oder Stellzylinder, zum Verstellen des Außenrohrantriebs und/oder des Innenrohrantriebs gegenüber dem Schlitten umfasst. Die Stellmittel sind vorzugsweise einerseits mit dem Schlitten und andererseits mit dem entsprechenden Bohrantrieb verbunden, so dass der Außenrohrantrieb und der Innenrohrantrieb jeweils eigenständig gegenüber dem Schlitten verschwenkt werden können.A preferred embodiment of the invention is that the adjusting device comprises adjusting means, in particular adjusting screws and / or adjusting cylinders, for adjusting the outer tube drive and / or the inner tube drive relative to the carriage. The adjusting means are preferably connected on the one hand to the carriage and on the other hand to the corresponding drill drive, so that the outer tube drive and the inner tube drive can each be pivoted independently relative to the carriage.

Die Stellmittel können grundsätzlich beliebig ausgebildet sein. Besonders bevorzugt ist es jedoch, wenn die Stellmittel Stellschrauben aufweisen, da diese durch ihr Gewinde eine besonders feine Justierung des Außenrohrantriebs beziehungsweise des Innenrohrantriebs ermöglichen.The adjusting means can in principle be designed as desired. However, it is particularly preferred if the adjusting means have adjusting screws, because they allow by their thread a particularly fine adjustment of the outer tube drive or the inner tube drive.

Die Bohrantriebe sind während ihres Betriebs großen Kräften ausgesetzt. Es ist daher nach der Erfindung bevorzugt, dass Befestigungsmittel, insbesondere Befestigungsschrauben und/oder Befestigungsbolzen, vorgesehen sind, mit welchen der Außenrohrantrieb und/oder der Innenrohrantrieb in einer definierten Ausrichtung an dem Schlitten befestigt werden kann. Zweckmäßigerweise kann der Außenrohrantrieb beziehungsweise der Innenrohrantrieb mittels der Justiereinrichtung in die gewünschte Ausrichtung verschwenkt werden und anschließend mittels der Befestigungsmittel in dieser Position fixiert werden. Im Betrieb des Bohr- oder Baugeräts ist die Justiereinrichtung somit keinen größeren Kräften ausgesetzt, so dass die Justiereinrichtung lediglich für die Zwecke der Verschwenkung des entsprechenden Bohrantriebs dimensioniert sein muss.The auger drives are exposed to great forces during their operation. It is therefore preferred according to the invention that fastening means, in particular fastening screws and / or fastening bolts, are provided, with which the outer tube drive and / or the inner tube drive can be fixed in a defined orientation on the carriage. Appropriately, the outer tube drive or the inner tube drive can be pivoted by means of the adjusting device in the desired orientation and then fixed by means of the fastening means in this position. In the operation of the drilling or construction equipment, the adjusting device is thus exposed to no greater forces, so that the Justification must be dimensioned only for the purpose of pivoting the corresponding drill drive.

Eine konstruktiv besonders einfache und zugleich zuverlässige Fixierung wird dadurch erreicht, dass zur Befestigung des Außenrohrantriebs an dem Schlitten eine Flanschbefestigung vorgesehen ist, welche ein Flanschelement mit Durchgangsbohrungen und Befestigungsmittel, insbesondere Befestigungsschrauben und/oder Befestigungsbolzen, aufweist.A structurally particularly simple and at the same time reliable fixing is achieved in that a flange fastening is provided for fastening the outer tube drive to the slide, which has a flange element with through holes and fastening means, in particular fastening screws and / or fastening bolts.

Um eine Befestigung des Außenrohrantriebs und/oder des Innenrohrantriebs in verschiedenen Schwenklagen zu ermöglichen, ist es gemäß der Erfindung bevorzugt, dass die Befestigungsmittel, insbesondere Befestigungsschrauben und/oder Befestigungsbolzen, mit Spiel in den Durchgangsbohrungen angeordnet sind. Innerhalb einer gewissen Toleranz kann der Außenrohrantrieb beziehungsweise der Innenrohrantrieb damit verschwenkt werden, während die Befestigungsmittel in den Durchgangsbohrungen angeordnet bleiben. Vorteilhafterweise sind die Durchgangsbohrungen in ihrer Form der Bewegungsbahn der Befestigungsmittel angepasst und beispielsweise ringsegmentförmig gestaltet.In order to enable attachment of the outer tube drive and / or the inner tube drive in different pivoting positions, it is preferred according to the invention that the fastening means, in particular fastening screws and / or fastening bolts are arranged with play in the through holes. Within a certain tolerance of the outer tube drive or the inner tube drive can be pivoted so while the fasteners remain arranged in the through holes. Advantageously, the through holes are adapted in their shape to the path of movement of the fastening means and designed, for example, ring-segment-shaped.

Innerhalb des relevanten Verschwenkungsbereichs ist somit stets eine Befestigungsmöglichkeit des Außenrohrantriebs beziehungsweise des Innenrohrantriebs gegeben. Durch diese konstruktive Gestaltung kann eine Verschwenkbarkeit von bis zu einigen Grad, insbesondere bis zu 5 Grad erreicht werden.Within the relevant Verschwenkungsbereichs is thus always given a possibility of attachment of the outer tube drive or the inner tube drive. By this structural design, a pivotability of up to a few degrees, in particular up to 5 degrees can be achieved.

In einer bevorzugten Ausgestaltung der Flanschbefestigung ist das Flanschelement mit den Durchgangsbohrungen starr mit dem Schlitten verbunden. Die Befestigungsmittel sind fest oder lösbar mit dem entsprechenden Bohrantrieb verbunden und durch die Durchgangsbohrungen in dem Flanschelement hindurchgeführt. Bei einer Verschwenkung des entsprechenden Bohrantriebs bewegen sich die Befestigungsmittel innerhalb der feststehenden Durchgangsbohrungen des Flanschelements.In a preferred embodiment of the flange fastening, the flange element with the through-holes is rigidly connected to the carriage. The attachment means are fixed or releasably connected to the corresponding drill drive and passed through the through holes in the flange. Upon pivoting of the corresponding drill drive, the fasteners move within the fixed through holes of the flange.

In einer alternativen Ausgestaltung der Flanschbefestigung ist das Flanschelement mit den Durchgangsbohrungen starr mit dem Außenrohrantrieb und/oder dem Innenrohrantrieb verbunden. Entsprechend sind die Befestigungsmittel fest oder lösbar mit dem Schlitten verbunden und durch die Durchgangsbohrungen in dem Flanschelement hindurchgeführt. Bei einer Verschwenkung des entsprechenden Bohrantriebs bewegen sich die Durchgangsbohrungen des Flanschelements um die feststehenden Befestigunsmittel herum.In an alternative embodiment of the flange attachment, the flange element with the through-holes is rigidly connected to the outer tube drive and / or the inner tube drive. Accordingly, the fastening means are fixedly or detachably connected to the carriage and through the through holes in the flange member passed. Upon pivoting of the corresponding drill drive, the through-holes of the flange member move around the fixed fasteners.

Grundsätzlich kann, wie oben dargestellt, vorgesehen sein, dass jeder Bohrantrieb eigenständig gegenüber dem Schlitten verschwenkbar ist. Es kann aber auch zweckmäßig sein, Außenrohrantrieb und Innenrohrantrieb gemeinsam zu verschwenken, um die relative Ausrichtung der jeweiligen Längsachsen zueinander konstant zu halten. Hierzu ist nach der Erfindung vorgesehen, dass der Außenrohrantrieb und der Innenrohrantrieb an mindestens einem gemeinsamen Befestigungsflansch gelagert sind. Durch Verschwenkung dieses Befestigungsflansches werden Außenrohrantrieb und Innenrohrantrieb gemeinsam verschwenkt, so dass auf einfache Weise eine Ausrichtung der gemeinsamen Bohrachse zur Verfahrachse des Schlittens erfolgen kann.In principle, as shown above, it can be provided that each drill drive can be pivoted independently of the slide. However, it may also be expedient to pivot outer tube drive and inner tube drive together in order to keep the relative alignment of the respective longitudinal axes constant relative to one another. For this purpose, it is provided according to the invention that the outer tube drive and the inner tube drive are mounted on at least one common mounting flange. By pivoting this mounting flange outer tube drive and inner tube drive are pivoted together, so that in a simple way an alignment of the common drilling axis can be done to the travel axis of the carriage.

Eine weitere Möglichkeit zur gemeinsamen Verschwenkung von Außenrohrantrieb und Innenrohrantrieb kann dadurch erreicht werden, dass der Innenrohrantrieb über ein im Wesentlichen starres Verbindungselement mit dem Außenrohrantrieb verbunden ist, wobei der Innenrohrantrieb zusammen mit dem Außenrohrantrieb verschwenkbar ist. Das Verbindungselement kann beispielsweise ein Verbindungsgestell, eine Verbindungsplatte oder mehrere Verbindungsarme aufweisen, welche im Wesentlichen zwischen Außenrohrantrieb und Innenrohrantrieb angeordnet und mit diesen jeweils fest verbunden sind.A further possibility for joint pivoting of outer tube drive and inner tube drive can be achieved in that the inner tube drive is connected via a substantially rigid connecting element with the outer tube drive, wherein the inner tube drive is pivotable together with the outer tube drive. The connecting element may for example comprise a connecting frame, a connecting plate or a plurality of connecting arms, which are arranged substantially between the outer tube drive and the inner tube drive and in each case firmly connected thereto.

Um auch bei gemeinsamer Verschwenkung von Außenrohrantrieb und Innenrohrantrieb gegenüber dem Schlitten eine relative Verschwenkung der beiden Bohrantriebe zueinander zu ermöglichen, ist es nach der Erfindung bevorzugt, dass der Innenrohrantrieb mittels der Justiereinrichtung gegenüber dem Außenrohrantrieb verschwenkbar ist.In order to enable a relative pivoting of the two drilling drives to each other even with common pivoting of outer tube drive and inner tube drive relative to the carriage, it is preferred according to the invention that the inner tube drive by means of the adjusting device relative to the outer tube drive is pivotable.

Nach dieser Ausführungsform der Erfindung können die Längsachsen von Außenrohrantrieb und Innenrohrantrieb einerseits gemeinsam zur Verfahrachse des Schlittens beziehungsweise zur Längsachse des Mastes justiert werden. Andererseits kann zusätzlich bei einer Abweichung der Längsachse des Innenrohrantriebs von der Längsachse des Außenrohrantriebs der Innenrohrantrieb zum Außenrohrantrieb justiert werden. Zur gemeinsamen Verstellung von Außenrohrantrieb und Innenrohrantrieb sind vorzugsweise erste Stellmittel vorgesehen, welche einerseits mit dem Schlitten und andererseits mit dem Außenrohrantrieb verbunden sind. Um zusätzlich den Innenrohrantrieb gegenüber dem Außenrohrantrieb verstellen zu können, sind zweite Stellmittel vorgesehen, welche einerseits mit dem Außenrohrantrieb und andererseits mit dem Innenrohrantrieb verbunden sind. Erste und zweite Stellmittel sind vorzugsweise jeweils Stellschrauben und/oder Stellzylinder.According to this embodiment of the invention, the longitudinal axes of outer tube drive and inner tube drive can be adjusted on the one hand together to the travel axis of the carriage or to the longitudinal axis of the mast. On the other hand, in case of a deviation of the longitudinal axis of the inner tube drive from the longitudinal axis of the outer tube drive, the inner tube drive can be additionally adjusted to the outer tube drive. For joint adjustment of outer tube drive and inner tube drive preferably first adjusting means are provided, which are connected on the one hand with the carriage and on the other hand with the outer tube drive. In order to additionally adjust the inner tube drive relative to the outer tube drive, second adjusting means are provided, which are connected on the one hand with the outer tube drive and on the other hand with the inner tube drive. First and second adjusting means are preferably each adjusting screws and / or adjusting cylinder.

Um eine möglichst genaue Ausrichtung der Bohrantriebe zu erreichen, ist es bevorzugt, dass eine Messeinrichtung zum Ermitteln der Ausrichtungen des Außenrohrantriebs und/oder des Innenrohrantriebs vorgesehen ist.In order to achieve the most accurate alignment of the auger drives, it is preferred that a measuring device is provided for determining the orientations of the outer tube drive and / or the inner tube drive.

Das Bohr- oder Baugerät mit einem Mast ist dadurch gekennzeichnet, dass eine Antriebseinheit nach einem der Ansprüche 1 bis 10 längsverschiebbar an dem Mast angeordnet ist. Es ergeben sich dabei die im Zusammenhang mit der Antriebseinheit diskutierten Vorteile.The drilling or construction equipment with a mast is characterized in that a drive unit according to one of claims 1 to 10 is arranged longitudinally displaceably on the mast. This results in the advantages discussed in connection with the drive unit.

Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels weiter beschrieben, welches schematisch in der beigefügten Zeichnung dargestellt ist. In der Zeichnung zeigt:

Fig. 1
eine Seitenansicht einer erfindungsgemäßen Antriebsein- heit.
The invention will be further described below with reference to a preferred embodiment, which is shown schematically in the accompanying drawing. In the drawing shows:
Fig. 1
a side view of a drive unit according to the invention.

Die in der Figur dargestellte Antriebseinheit 10 weist einen Schlitten 20 auf, welcher zur Anordnung an einem nicht dargestellten Mast eines Bohr- oder Baugeräts vorgesehen ist. Die Antriebseinheit 10 weist ferner zwei Bohrantriebe auf, nämlich einen Außenrohrantrieb 30 zum drehenden Antreiben eines ersten Bohrelements und einen Innenrohrantrieb 40 zum drehenden Antreiben eines zweiten Bohrelements.The drive unit 10 shown in the figure has a carriage 20, which is provided for arrangement on a mast, not shown, of a drilling or construction equipment. The drive unit 10 further comprises two auger drives, namely an outer tube drive 30 for rotationally driving a first drilling element and an inner tube drive 40 for rotationally driving a second drilling element.

Zum axialen Vortreiben der Bohrelemente ist der Schlitten entlang einer Verfahrachse 12 an dem Mast verschiebbar gelagert. Die Führung des Schlittens 20 an dem Mast erfolgt mittels Führungsflächen, welche an dem Schlitten 20 ausgebildet und zur Anlage an einer entsprechenden Gegenfläche des Mastes gestaltet sind.For axially propelling the drilling elements, the carriage is displaceably mounted along a travel axis 12 on the mast. The guide of the carriage 20 on the mast by means of guide surfaces, which are formed on the carriage 20 and designed to rest against a corresponding mating surface of the mast.

Der dargestellte Schlitten 20 umfasst ein Schlittenunterteil 22 und ein Schlittenoberteil 24.The illustrated carriage 20 includes a carriage bottom 22 and a carriage top 24.

Das Schlitten unterteil 22 ist zur Anordnung an dem Mast des Bohr- oder Baugeräts vorgesehen. Die entsprechenden Führungsflächen befinden sich auf einer Rückseite des Schlittenunterteils 22 und sind in der dargestellten Ausführungsform als Führungspratzen 26 ausgebildet.The carriage bottom part 22 is provided for placement on the mast of the drilling or construction equipment. The corresponding guide surfaces are located on a rear side of the slide lower part 22 and, in the illustrated embodiment, are designed as guide claws 26.

Die Bohrantriebe sind auf dem Schlittenoberteil 24 angeordnet. Der Außenrohrantrieb 30 ist in einem unteren Bereich des Schlittenoberteils 24 in Richtung des zu erstellenden Bohrloches angeordnet und dient dem drehenden Antreiben eines ersten, rohrförmigen Bohrgestänges. Der Innenrohrantrieb 40 ist in einem oberen, dem Bohrloch abgewandten Bereich des Schlittenoberteils 24 angeordnet und dient dem drehenden Antreiben eines nach oben vorstehenden zweiten massiven Bohrgestänges, welches beispielsweise mit Bohrwendel ausgebildet sein kann. Außenrohrantrieb 30 und Innenrohrantrieb 40 sind im Wesentlichen in Verlängerung zueinander angeordnet, so dass eine Längsachse des Außenrohrantriebs 30 und eine Längsachse des Innenrohrantriebs 40 im Wesentlichen koaxial zueinander ausgerichtet sind und eine gemeinsame Bohrachse 14 bilden, wobei jedoch auch gewisse Abweichungen auftreten können.The auger drives are arranged on the carriage upper part 24. The outer tube drive 30 is arranged in a lower region of the carriage upper part 24 in the direction of the borehole to be created and serves for the rotational driving of a first, tubular drill string. The inner tube drive 40 is arranged in an upper region of the carriage upper part 24 remote from the borehole and serves for rotationally driving an upwardly projecting second solid drill rod, which may be formed, for example, with a drill spiral. Outer tube drive 30 and inner tube drive 40 are arranged substantially in extension to each other, so that a longitudinal axis of the outer tube drive 30 and a longitudinal axis of the inner tube drive 40 are substantially coaxially aligned with each other and form a common drilling axis 14, but also some deviations may occur.

Das Schlittenoberteil 24 ist zu Wartungszwecken und/oder zur Bestückung mit Bohrgestängen oder anderen Bohrelementen gegenüber dem Schlittenunterteil 22 schwenkbar. Zur Verschwenkung des Schlittenoberteils 24 gegenüber dem Schlittenunterteil 22 ist ein Schwenkzylinder 28 vorgesehen, der einerseits an dem Schlittenunterteil 22 und andererseits an dem Schlittenoberteil 24 angelenkt ist. Das Schlittenoberteil 24 ist gegenüber dem Schlittenunterteil 22 um eine Schwenkachse 17 schwenkbar. Die Schwenkachse 17 verläuft parallel zu den Führungsflächen und parallel zu einer Mastvorderseite, an welcher der Schlitten 20 verschiebbar gelagert ist.The carriage upper part 24 is pivotable relative to the carriage base 22 for maintenance purposes and / or for fitting with drill rods or other drilling elements. For pivoting the carriage upper part 24 relative to the slide lower part 22, a pivoting cylinder 28 is provided, which is articulated on the one hand to the slide base 22 and on the other hand on the carriage upper part 24. The carriage upper part 24 is pivotable relative to the carriage lower part 22 about a pivot axis 17. The pivot axis 17 extends parallel to the guide surfaces and parallel to a mast front side, on which the carriage 20 is slidably mounted.

Mit einer Verschwenkung des Schlittenoberteils 24 werden auch die Bohrantriebe, also Außenrohrantrieb 30 und Innenrohrantrieb 40, welche auf dem Schlittenoberteil 24 angeordnet sind, zusammen mit diesem gegenüber dem Schlittenunterteil 22 verschwenkt. Die Verschwenkbarkeit des Schlittenoberteils 24 mit den Bohrantrieben gegenüber dem Schlittenunterteil 22 kann zu einer ungenauen Ausrichtung der Bohrantriebe zur Verfahrachse 12 des Schlittens 20 führen.With a pivoting of the carriage upper part 24 and the auger drives, so outer tube drive 30 and inner tube drive 40, which are arranged on the carriage upper part 24, pivoted together with this relative to the slide lower part 22. The pivotability of the carriage upper part 24 with the drill drives relative to the slide lower part 22 can lead to an inaccurate alignment of the drill drives to the travel axis 12 of the carriage 20.

Um die Längsachsen der Bohrantriebe erforderlichenfalls wieder zu der Verfahrachse 12 des Schlittens 20 auszurichten, ist eine Justiereinrichtung vorgesehen, welche eine feine Justierung der Längsachsen ermöglicht.In order to align the longitudinal axes of the drilling drives, if necessary, again to the travel axis 12 of the carriage 20, an adjusting device is provided, which allows a fine adjustment of the longitudinal axes.

Zum Ausrichten des Außenrohrantriebs 30 ist dieser um eine Querachse 16, welche parallel zur Schwenkachse 17 und quer zur Bohrachse 14 verläuft, schwenkbar. Zum aktiven Verschwenken des Außenrohrantriebs 30 sind seitlich versetzt zur Querachse 16 erste Stellschrauben 50 vorgesehen, welche einerseits mit dem Schlitten 20 und andererseits mit dem Außenrohrantrieb 30 verbunden sind und eine feine Justierung ermöglichen. In der dargestellten Ausführungsform sind die Stellschrauben 50 mit einem Stellflansch 52 des Außenrohrantriebs 30, beispielsweise über ein Gewinde, in Eingriff. Der Stellflansch 52 ist fest mit dem Außenrohrantrieb 30 verbunden. Die Stellschrauben drücken gegen eine Widerlagerfläche am Schlittenunterteil 22. Durch Drehen der Stellschrauben 50 wird der Abstand zwischen Stellflansch 52 und Schlittenunterteil 22 verstellt und so erfolgt eine Verschwenkung des Stellflansches 52 und damit des Außenrohrantriebs 30 um die Querachse 16. Die Verschwenkung ist durch Pfeile 18 schematisch angedeutet.For aligning the outer tube drive 30, this is pivotable about a transverse axis 16, which runs parallel to the pivot axis 17 and transversely to the drilling axis 14. For active pivoting of the outer tube drive 30 are laterally offset from the transverse axis 16 first set screws 50 are provided which are connected on the one hand to the carriage 20 and on the other hand with the outer tube drive 30 and allow fine adjustment. In the illustrated embodiment, the adjusting screws 50 with an adjusting flange 52 of the outer tube drive 30, for example via a threaded engaged. The adjusting flange 52 is fixedly connected to the outer tube drive 30. By turning the screws 50, the distance between the adjusting flange 52 and the carriage base 22 is adjusted and so there is a pivoting of the adjusting flange 52 and thus of the outer tube drive 30 about the transverse axis 16. The pivoting is schematically indicated by arrows 18 indicated.

Nach einer Justierung des Außenrohrantriebs 30 kann dieser in der gewünschten Position fixiert werden. Der Außenrohrantrieb 30 ist hierzu über eine Flanschbefestigung 60 an dem Schlitten 20 befestigbar. Die Flanschbefestigung 60 umfasst ein Flanschelement mit Durchgangsbohrungen, in welchen Befestigungsschrauben 62 zur Befestigung des Außenrohrantriebs 30 an dem Schlitten 20 aufgenommen sind. Die Durchgangsbohrungen des Flanschelements haben einen Durchmesser, welcher größer ist als der Außendurchmesser der Befestigungsschrauben 62, so dass die Befestigungsschrauben 62 mit Spiel in den Durchgangsbohrungen aufgenommen sind und eine gewisse Verschwenkung vor dem Festziehen erlauben.After an adjustment of the outer tube drive 30, this can be fixed in the desired position. The outer tube drive 30 can be fastened to the carriage 20 via a flange attachment 60 for this purpose. The flange attachment 60 comprises a flange element with through-holes, in which fastening screws 62 are accommodated for fastening the outer tube drive 30 to the carriage 20. The through-holes of the flange member have a diameter which is larger than the outer diameter of the fixing screws 62, so that the fixing screws 62 are accommodated with clearance in the through-holes and allow some pivoting before tightening.

Der Innenrohrantrieb 40 ist über ein Verbindungselement 70 mit dem Außenrohrantrieb 30 starr verbunden, so dass der Innenrohrantrieb 40 bei einer Verschwenkung des Außenrohrantriebs 30 zusammen mit diesem verschwenkt wird.The inner tube drive 40 is rigidly connected to the outer tube drive 30 via a connecting element 70, so that the inner tube drive 40 is pivoted together with the outer tube drive 30 when pivoting.

Zur Justierung des Innenrohrantriebs 40 gegenüber dem Außenrohrantrieb weist die Justiereinrichtung zweite Stellschrauben 51 auf, die in der dargestellten Ausführungsform einerseits mit dem Verbindungselement 70 und andererseits mit dem Innenrohrantrieb 40 verbunden sind. Grundsätzlich können die zweiten Stellschrauben 51 zum Verstellen des Innenrohrantriebs 40, wie oben dargestellt, aber auch mit dem Schlitten 20 verbunden sein, so dass beide Bohrantriebe unabhängig voneinander verstellbar sind. Lagerung und Befestigung des Innenrohrantriebs 40 können in grundsätzlich entsprechender Weise wie die Lagerung und Befestigung des Außenrohrantriebs 30 erfolgen.For adjusting the inner tube drive 40 relative to the outer tube drive, the adjusting device has second adjusting screws 51, which are connected in the illustrated embodiment on the one hand with the connecting element 70 and on the other hand with the inner tube drive 40. Basically, the second set screws 51 for adjusting the inner tube drive 40, as shown above, but also be connected to the carriage 20, so that both auger drives are independently adjustable. Storage and attachment of the inner tube drive 40 can be carried out in basically the same way as the storage and attachment of the outer tube drive 30.

Insgesamt können mit der erfindungsgemäßen Antriebseinheit 10 die Längsachsen eines Außenrohrantriebs und eines Innenrohrantriebs auf einfache und präzise Weise zur Verfahrachse 12 des Schlittens 20 und zur gewünschten Bohrachse ausgerichtet und zueinander in Fluchtung gebracht werden. Hierdurch können in den Lagerungen der Bohrantriebe auftretende Kräfte herabgesetzt werden, wodurch der Verschleiß an den entsprechenden Teilen reduziert wird.Overall, with the drive unit 10 according to the invention, the longitudinal axes of an outer tube drive and an inner tube drive can be aligned in a simple and precise manner to the travel axis 12 of the carriage 20 and the desired drilling axis and brought into alignment with each other. As a result, forces occurring in the bearings of the auger drives can be reduced, whereby the wear on the corresponding parts is reduced.

Claims (10)

  1. Drive unit for a drilling or construction apparatus comprising
    - a carriage (20) which is designed for movement on a mast of the drilling or construction apparatus along a movement axis (12),
    - an outer pipe drive (30) for rotationally driving a first, tubular drill rod about a first longitudinal axis and
    - an inner pipe drive (40) for rotationally driving a second drill rod, arranged inside the first drill rod, about a second longitudinal axis,
    wherein
    - the outer pipe drive (30) and the inner pipe drive (40) are arranged on the carriage (20) and
    - the two longitudinal axes run substantially coaxially to each other and form a common drilling axis (14),
    characterized in that
    an adjusting means is provided, with which an alignment of at least one of the longitudinal axes of the outer pipe drive (30) or the inner pipe drive (40) with respect to the movement axis (12) of the carriage (20) can be changed and adjusted and
    in that the outer pipe drive (30) and the inner pipe drive (40) are supported on at least one common fastening flange.
  2. Drive unit according to claim 1,
    characterized in that
    the outer pipe drive (30) and/or the inner pipe drive (40) is pivotably supported on the carriage (20) about a transverse axis (16) which runs substantially perpendicularly to the movement axis (12) of the carriage (20).
  3. Drive unit according to any one of claims 1 or 2,
    characterized in that
    the adjusting means comprises positioning means, in particular positioning screws (50, 51) and/or positioning cylinders, for adjusting the outer pipe drive (30) and/or the inner pipe drive (40) with respect to the carriage (20).
  4. Drive unit according to any one of claims 1 to 3,
    characterized in that
    fastening means, in particular fastening screws (62) and/or fastening bolts, are provided, with which the outer pipe drive (30) and/or the inner pipe drive (40) can be fastened in a defined alignment on the carriage (20).
  5. Drive unit according to any one of claims 1 to 4,
    characterized in that
    for fastening the outer pipe drive (30) and/or the inner pipe drive (40) on the carriage (20) a flange fastening (60) is provided, which has a flange element with through-bores and fastening means, in particular fastening screws (62) and/or fastening bolts.
  6. Drive unit according to claim 5,
    characterized in that
    for fastening the outer pipe drive (30) and/or the inner pipe drive (40) in different pivot positions the fastening means are arranged with clearance in the through-bores.
  7. Drive unit according to any one of claims 1 to 6,
    characterized in that
    the inner pipe drive (40) is connected to the outer pipe drive (30) via a substantially rigid connecting element (70), wherein the inner pipe drive (40) is pivotable together with the outer pipe drive (30).
  8. Drive unit according to any one of claims 1 to 7,
    characterized in that
    the inner pipe drive (40) is pivotable with respect to the outer pipe drive (30) by means of the adjusting means.
  9. Drive unit according to any one of claims 1 to 8,
    characterized in that
    a measuring means for determining the alignments of the outer pipe drive (30) and/or the inner pipe drive (40) is provided.
  10. Drilling or construction apparatus with a mast,
    characterized in that
    a drive unit (10) according to any one of claims 1 to 9 is arranged in a longitudinally displaceable manner on the mast.
EP09004988A 2009-04-03 2009-04-03 Drive unit with alignment means Not-in-force EP2236734B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT09004988T ATE520857T1 (en) 2009-04-03 2009-04-03 DRIVE UNIT WITH ADJUSTMENT DEVICE
EP09004988A EP2236734B1 (en) 2009-04-03 2009-04-03 Drive unit with alignment means
ES09004988T ES2367556T3 (en) 2009-04-03 2009-04-03 DRIVE UNIT WITH INSTALLATION OF ADJUSTMENT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09004988A EP2236734B1 (en) 2009-04-03 2009-04-03 Drive unit with alignment means

Publications (2)

Publication Number Publication Date
EP2236734A1 EP2236734A1 (en) 2010-10-06
EP2236734B1 true EP2236734B1 (en) 2011-08-17

Family

ID=40983564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09004988A Not-in-force EP2236734B1 (en) 2009-04-03 2009-04-03 Drive unit with alignment means

Country Status (3)

Country Link
EP (1) EP2236734B1 (en)
AT (1) ATE520857T1 (en)
ES (1) ES2367556T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456914A1 (en) 2017-09-19 2019-03-20 Eurodrill GmbH Dual head drilling device and method for producing a borehole

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3571371B1 (en) 2017-01-18 2023-04-19 Minex CRC Ltd Mobile coiled tubing drilling apparatus

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Publication number Priority date Publication date Assignee Title
SE414417B (en) * 1975-12-11 1980-07-28 Craelius Ab rock drill
US4878546A (en) * 1988-02-12 1989-11-07 Triten Corporation Self-aligning top drive
DE4402487A1 (en) * 1993-12-29 1995-07-06 Interoc Vertriebsgesellschaft Drill for deep borehole
DE19512109C2 (en) * 1995-04-03 1999-06-24 Delmag Maschinenfabrik Drill
WO2000055470A1 (en) * 1999-03-15 2000-09-21 Knebel Drilling A/S Drilling rig with pipe handling means
DE102006059171B3 (en) 2006-12-14 2008-04-03 Klemm Bohrtechnik Zweigniederlassung Der Bauer Maschinen Gmbh Double drilling-rod type drilling installation, has connection on outer rod for forming liquid connection to annular cavity between rods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456914A1 (en) 2017-09-19 2019-03-20 Eurodrill GmbH Dual head drilling device and method for producing a borehole
US10837231B2 (en) 2017-09-19 2020-11-17 Eurodrill Gmbh Double head drilling device and method for producing a bore

Also Published As

Publication number Publication date
ATE520857T1 (en) 2011-09-15
ES2367556T3 (en) 2011-11-04
EP2236734A1 (en) 2010-10-06

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