EP2765271A1 - Drilling table - Google Patents

Drilling table Download PDF

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Publication number
EP2765271A1
EP2765271A1 EP14151195.6A EP14151195A EP2765271A1 EP 2765271 A1 EP2765271 A1 EP 2765271A1 EP 14151195 A EP14151195 A EP 14151195A EP 2765271 A1 EP2765271 A1 EP 2765271A1
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EP
European Patent Office
Prior art keywords
receiving sleeve
sleeve
table according
securing
receiving
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EP14151195.6A
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German (de)
French (fr)
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EP2765271B1 (en
Inventor
Christian Heichel
Holger Bube
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ABI Anlagentechnik Baumaschinen Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH
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ABI Anlagentechnik Baumaschinen Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH
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Publication of EP2765271A1 publication Critical patent/EP2765271A1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/04—Rotary tables

Definitions

  • the invention relates to a rotary drilling rig for a rotary drilling rig, comprising a rotatable by means of a rotary receiving sleeve for receiving a Mitauerkonturen Kelly bar according to the preamble of claim 1.
  • the invention further relates to a rotary drilling rig with such a drilling table according to the preamble of claim 10.
  • the so-called Kelly bar is used with which the rotational movement or the torque of a drill drive and the vertical movement or the biasing forces are transmitted to the drilling tool.
  • the length of the Kelly bar and the drilling tool determine the maximum achievable drilling depth.
  • the drill drive is on a so-called drilling table, also called drilling carriage or guide carriage, mounted, which is arranged vertically displaceable on a leader. This broker is fixed to a carrier device. The feed of the drill table with the drill drive to generate the required biasing forces via a cable feed or via a hydraulic feed cylinder.
  • a disadvantage of the known drilling table that the inside arranged in the receiving sleeve entrainment, regularly checked for wear and / or replaced, are very difficult to access. It is necessary to disassemble the carriers either from below climb into the "floating" drilling table or work from above into the receiving sleeve in the form of a hollow shaft. The change can be facilitated by the fact that the drill table is dismantled by the broker and tilted backwards. However, this requires a considerable amount of time.
  • the invention aims to remedy this situation.
  • the invention has for its object to provide a rotary table for a rotary drilling rig, in which the assembly and disassembly of the entrainment is simplified. According to the invention, this object is solved by the features of the characterizing part of patent claim 1.
  • a rotary table for a rotary drilling rig in which the assembly or disassembly of the entrainment is simplified.
  • At least one driver bar on at least on its two longitudinal sides on a side projecting overhang, whereby a T-shaped cross-section is formed.
  • a flange-like contact surface is formed, which allows a defined orientation of the entrainment.
  • At least one driver bar with its lateral projections on the outbreak an immediate outer wall of the receiving sleeve, wherein in the lateral projections bores are introduced, through which the driver bar is screwed by screws with the receiving sleeve.
  • a step is arranged in the receiving sleeve on two opposite sides of at least one outbreak, whereby a stop is formed on which abuts a driver bar with their lateral projections.
  • a radial and axial alignment of the carrier strip is achieved.
  • the step and the carrier strip are preferably designed such that the outer surface of the voltage applied to the carrier plate engages in the lateral surface of the receiving sleeve.
  • means for radial securing at least one driver bar are arranged on the receiving sleeve, which are preferably formed by a locking plate, which is a driver bar at least partially overlapping attached to the outer wall of the receiving sleeve.
  • the means for radial securing of the carrier strips can also be formed by a securing sleeve, which is pushed onto the receiving sleeve.
  • openings are introduced in the securing sleeve, which are at least as large in length and width as the corresponding dimensions of the recesses of the receiving sleeve, wherein the securing sleeve is rotatable on the receiving sleeve.
  • the present invention is further based on the object to provide a rotary drilling rig with a guided along a leader Gurklers, which allows easy mounting or dismounting of the entrainment. According to the invention, this object is solved by the features of the characterizing part of patent claim 10.
  • the drilling table chosen as an exemplary embodiment essentially consists of a slide part 2, which is displaceably mounted on a leader (not shown) and receives a rotary drive 3 which has a gear (not shown) with a rotatably arranged receiving sleeve 4 for receiving a Kelly bar (not shown) connected is.
  • the receiving sleeve 4 is provided with three arranged offset by 120 degrees Mit supportive instrumentaln 5, which protrude through introduced in the receiving sleeve 4 outbreaks 41 through the wall of the receiving sleeve 4 and which are fixed via a respective backup plate 6.
  • the receiving sleeve 4 is designed substantially hollow cylindrical and has at its end opposite the carriage part 2 a radially projecting stop ring 40 for the application of a arranged on the male Kelly bar support ring on. Between stop ring 40 and slide part 2 are in the receiving sleeve 4 offset by 120 degrees rectangular trained outbreaks 41 introduced. On the two longitudinal sides of the outbreaks 41, a step 42 for supporting the projections 51 of the entrainment strips 5 is arranged in the receiving sleeve 4. Furthermore, threaded bores 43 are arranged for receiving screws 62 for fastening a securing plate 6.
  • the Mitschelfn 5 are formed substantially cuboid.
  • a laterally projecting projection 51 is integrally formed on the carrier strips 5, whereby the carrier strips have a T-shaped cross-section.
  • the depth of the carrier strip 5 is chosen such that it passes through the wall 42 of the receiving sleeve 4 at stop of the lateral projections 51 to the step and inside a sufficient extent.
  • the carrier strip 5 is designed such that its outer surface 53 inserts into the lateral surface 44 of the receiving sleeve 4 when the lateral projections 51 abut against the step 42.
  • the voltage applied to the steps 42 of the receiving sleeve 4 carrier strips 5 are axially secured via a respective backup plate 6, which are secured by screws 62, the driver bar 5 completely overlapping on the receiving sleeve 4.
  • FIGS. 3 and 4 an alternative possibility of axial securing of the carrier strips 5 is shown.
  • a securing sleeve 7 is arranged rotatably.
  • the safety sleeve 7 is circumferentially offset by 120 degrees to each other with rectangular openings 71, which are greater in height and in width, as provided with supernatants 51 entrainment 5.
  • the securing sleeve 7 so on the receiving sleeve 4 rotates that the openings 71 are aligned with the openings 41 of the receiving sleeve 4.
  • the locking sleeve 7 After introduction of the entrainment 5 by the outbreaks 41 such that the supernatants 51 abut the steps 42, the locking sleeve 7 is rotated by about 60 degrees, whereby all three driver strips 5 are axially secured (see. Fig. 4 ). Securing this position of the safety sleeve 7, for example, by means of a screw or a bolt.
  • the securing sleeve 7 may be provided on its inner wall with a circumferential groove whose width corresponds approximately to the height of the protruding cam 5. To disassemble the carrier strips 5, the securing sleeve 7 is in turn rotated by about 60 degrees, whereby the carrier strips 5 are released for removal.

Abstract

The table has a receiving sleeve rotatable by a rotary drive and for retaining a Kelly bar. Coupling elements are arranged at an inside wall of the receiving sleeve for engagement in driver contours of the Kelly bar for transmission of rotational torque and bias forces. Breakouts (41) are introduced in the receiving sleeve, where the coupling elements, insertable from outside, are projecting into an inner space of the sleeve through the breakouts. The coupling elements are partially designed as drive strips (5).

Description

Die Erfindung betrifft einen Bohrtisch für eine Drehbohranlage, mit einer mittels eines Drehantriebes rotierbaren Aufnahmehülse zur Aufnahme einer mit Mitnehmerkonturen versehenen Kellystange nach dem Oberbegriff des Patentanspruchs 1. Die Erfindung betrifft weiterhin eine Drehbohranlage mit einem solchen Bohrtisch nach dem Oberbegriff des Patentanspruchs 10.The invention relates to a rotary drilling rig for a rotary drilling rig, comprising a rotatable by means of a rotary receiving sleeve for receiving a Mitnehmerkonturen Kelly bar according to the preamble of claim 1. The invention further relates to a rotary drilling rig with such a drilling table according to the preamble of claim 10.

Zur Herstellung von Bohrungen mit großem Durchmesser kommen Drehbohranlagen zum Einsatz, welche nach dem sogenannten Kellybohrverfahren arbeiten. Dabei kommt eine speziell profilierte, mehrfach teleskopierbare Bohrstange, die sogenannte Kellystange zum Einsatz, mit der die Drehbewegung bzw. das Drehmoment eines Bohrantriebes sowie die Vertikalbewegung bzw. die Vorspannkräfte auf das Bohrwerkzeug übertragen werden. Die Länge der Kellystange und des Bohrwerkzeugs bestimmen die maximal erreichbare Bohrtiefe. Der Bohrantrieb ist auf einem sogenannten Bohrtisch, auch Bohrschlitten oder Führungsschlitten genannt, montiert, der an einem Mäkler vertikal verschiebbar angeordnet ist. Dieser Mäkler ist fest an einem Trägergerät angeordnet. Der Vorschub des Bohrtisches mit dem Bohrantrieb zur Erzeugung der erforderlichen Vorspannkräfte erfolgt über einen Seilvorschub oder auch über einen hydraulischen Vorschubzylinder.For the production of bores with large diameter rotary drilling rigs are used, which work according to the so-called Kellybohrverfahren. In this case, a specially profiled, multi-telescopic boring bar, the so-called Kelly bar is used with which the rotational movement or the torque of a drill drive and the vertical movement or the biasing forces are transmitted to the drilling tool. The length of the Kelly bar and the drilling tool determine the maximum achievable drilling depth. The drill drive is on a so-called drilling table, also called drilling carriage or guide carriage, mounted, which is arranged vertically displaceable on a leader. This broker is fixed to a carrier device. The feed of the drill table with the drill drive to generate the required biasing forces via a cable feed or via a hydraulic feed cylinder.

Zur Übertragung des Drehmoments sowie der Vorspannkräfte von dem Drehantrieb auf die das Bohrwerkzeug aufnehmende Kellystange ist diese über Mitnehmerleisten in einer Aufnahmehülse des Bohrtisches verriegelt. Die rotierbar an dem Bohrtisch angeordnete Aufnahmehülse ist mit dem Drehantrieb des Bohrtisches verbunden. Die Mitnehmerleisten zur Übertragung von Drehmoment und Vorspannkräften auf die Kellystange sind an der Innenwandung der Aufnahmehülse mit dieser verschraubt oder verschweißt.To transmit the torque and the biasing forces of the rotary drive to the drilling tool receiving Kelly bar this is locked via entrainment in a receiving sleeve of the drilling table. The rotatably arranged on the drilling table receiving sleeve is connected to the rotary drive of the drilling table. The Mitnehmerleisten for transmitting torque and biasing forces on the Kelly bar are screwed or welded to the inner wall of the receiving sleeve with this.

Nachteilig an dem vorbekannten Bohrtisch ist, dass die innen in der Aufnahmehülse angeordneten Mitnehmerleisten, die verschleißbedingt regelmäßig überprüft und/oder ausgetauscht werden müssen, nur sehr schwer zugängig sind. Zur Demontage von Mitnehmerleisten ist es erforderlich, entweder von unten unter den "schwebenden" Bohrtisch in diesen hineinzuklettern oder von oben in die in Form einer Hohlwelle ausgebildete Aufnahmehülse hineingreifend zu arbeiten. Der Wechsel kann dadurch erleichtert werden, dass der Bohrtisch vom Mäkler abgebaut und nach hinten gekippt wird. Hierzu ist jedoch ein erheblicher Zeitaufwand erforderlich.A disadvantage of the known drilling table that the inside arranged in the receiving sleeve entrainment, regularly checked for wear and / or replaced, are very difficult to access. It is necessary to disassemble the carriers either from below climb into the "floating" drilling table or work from above into the receiving sleeve in the form of a hollow shaft. The change can be facilitated by the fact that the drill table is dismantled by the broker and tilted backwards. However, this requires a considerable amount of time.

Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, einen Bohrtisch für eine Drehbohranlage zu schaffen, bei dem die Montage und Demontage der Mitnehmerleisten vereinfacht ist. Gemäß der Erfindung wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst.The invention aims to remedy this situation. The invention has for its object to provide a rotary table for a rotary drilling rig, in which the assembly and disassembly of the entrainment is simplified. According to the invention, this object is solved by the features of the characterizing part of patent claim 1.

Mit der Erfindung ist ein Bohrtisch für eine Drehbohranlage geschaffen, bei dem die Montage bzw. Demontage der Mitnehmerleisten vereinfacht ist. Durch die Durchführung der bevorzugt als Mitnehmerleisten ausgeführten Koppelelemente durch die Ausbrüche der Aufnahmehülse in den Hülseninnenraum ist eine einfache Handhabung dieser Mitnehmerleisten von außen erzielt.With the invention, a rotary table for a rotary drilling rig is provided in which the assembly or disassembly of the entrainment is simplified. By carrying out the coupling elements preferably designed as entrainment by the outbreaks of the receiving sleeve in the sleeve interior easy handling of this carrier strips is achieved from the outside.

In Weiterbildung der Erfindung weist wenigstens eine Mitnehmerleiste zumindest an ihren beiden Längsseiten einen seitliche auskragenden Überstand auf, wodurch ein T-förmiger Querschnitt gebildet ist. Hierdurch ist eine flanschartige Anlagefläche gebildet, die eine definierte Ausrichtung der Mitnehmerleisten ermöglicht.In a further development of the invention, at least one driver bar on at least on its two longitudinal sides on a side projecting overhang, whereby a T-shaped cross-section is formed. As a result, a flange-like contact surface is formed, which allows a defined orientation of the entrainment.

In Ausgestaltung der Erfindung liegt wenigstens eine Mitnehmerleiste mit ihren seitlichen Überständen an der einen Ausbruch umgehenden Außenwandung der Aufnahmehülse an, wobei in den seitlichen Überständen Bohrungen eingebracht sind, durch welche die Mitnehmerleiste über Schrauben mit der Aufnahmehülse verschraubt ist. Hierdurch ist eine einfache Befestigung der Mitnehmerleiste bei gleichzeitiger Ausrichtung ermöglicht.In an embodiment of the invention is at least one driver bar with its lateral projections on the outbreak an immediate outer wall of the receiving sleeve, wherein in the lateral projections bores are introduced, through which the driver bar is screwed by screws with the receiving sleeve. As a result, a simple attachment of the driver bar is possible with simultaneous alignment.

In Weiterbildung der Erfindung ist in der Aufnahmehülse an zwei gegenüberliegenden Seiten wenigstens eines Ausbruchs eine Stufe angeordnet, wodurch ein Anschlag gebildet ist, an dem eine Mitnehmerleiste mit ihren seitlichen Überständen anliegt. Hierdurch ist eine radiale sowie eine axiale Ausrichtung der Mitnehmerleiste erzielt. Dabei sind die Stufe und die Mitnehmerleiste bevorzugt derart ausgebildet, dass sich die Außenfläche der an der Stufe anliegenden Mitnehmerleiste in die Mantelfläche der Aufnahmehülse einfügt.In a further development of the invention, a step is arranged in the receiving sleeve on two opposite sides of at least one outbreak, whereby a stop is formed on which abuts a driver bar with their lateral projections. As a result, a radial and axial alignment of the carrier strip is achieved. In this case, the step and the carrier strip are preferably designed such that the outer surface of the voltage applied to the carrier plate engages in the lateral surface of the receiving sleeve.

In Ausgestaltung der Erfindung sind Mittel zur radialen Sicherung wenigstens einer Mitnehmerleiste an der Aufnahmehülse angeordnet, die vorzugsweise durch eine Sicherungsplatte gebildet sind, welche eine Mitnehmerleiste zumindest bereichsweise überdeckend an der Außenwandung der Aufnahmehülse lösbar befestigt ist. Hierdurch ist eine einfache, radial und axial ausgerichtete Befestigung einer Mitnehmerleiste erzielt. Eine mögliche Schwächung der seitlichen Überstände der Mitnehmerleisten durch Bohrungen zur Durchführung von Befestigungsschrauben ist nicht erforderlich. Vielmehr erfolgt die Befestigung in Form einer axialen Sicherung durch die Sicherungsplatte.In an embodiment of the invention means for radial securing at least one driver bar are arranged on the receiving sleeve, which are preferably formed by a locking plate, which is a driver bar at least partially overlapping attached to the outer wall of the receiving sleeve. As a result, a simple, radially and axially aligned attachment of a driver bar is achieved. A possible weakening of the lateral projections of the Mitnehmerleisten through holes for the implementation of mounting screws is not required. Rather, the attachment takes place in the form of an axial securing by the backup plate.

In einer alternativen Ausgestaltung der Erfindung können die Mittel zur radialen Sicherung der Mitnehmerleisten auch durch eine Sicherungshülse gebildet sein, die auf die Aufnahmehülse aufgeschoben ist. Hierdurch ist eine gleichzeitige Sicherung sämtlicher Mitnehmerleisten ermöglicht.In an alternative embodiment of the invention, the means for radial securing of the carrier strips can also be formed by a securing sleeve, which is pushed onto the receiving sleeve. As a result, a simultaneous backup of all entrainment is possible.

In vorteilhafter Ausgestaltung der Erfindung sind in der Sicherungshülse Öffnungen eingebracht, die in ihrer Länge und Breite zumindest gleich groß wie die entsprechenden Abmessungen der Aussparungen der Aufnahmehülse sind, wobei die Sicherungshülse auf der Aufnahmehülse rotierbar ist. Hierdurch ist ein Einbringen der Mitnehmerleisten durch die Ausbrüche der Aufnahmehülse bei montierter Sicherungshülse ermöglicht. Die axiale Sicherung der Mitnehmerleisten erfolgt durch Rotation der Sicherungshülse.In an advantageous embodiment of the invention, openings are introduced in the securing sleeve, which are at least as large in length and width as the corresponding dimensions of the recesses of the receiving sleeve, wherein the securing sleeve is rotatable on the receiving sleeve. As a result, an introduction of the entrainment is made possible by the outbreaks of the receiving sleeve with mounted locking sleeve. The axial securing of the carrier strips takes place by rotation of the securing sleeve.

Der vorliegenden Erfindung liegt weiterhin die Aufgabe zugrunde, eine Drehbohranlage mit einem entlang eines Mäklers geführten Bohrtisch zu schaffen, der eine einfache Montage bzw. Demontage der Mitnehmerleisten ermöglicht. Gemäß der Erfindung wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 10 gelöst.The present invention is further based on the object to provide a rotary drilling rig with a guided along a leader Mäklers, which allows easy mounting or dismounting of the entrainment. According to the invention, this object is solved by the features of the characterizing part of patent claim 10.

Andere Weiterbildungen und Ausgestaltungen der Erfindung sind in den übrigen Ansprüchen angegeben. Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachfolgend im Einzelnen beschrieben. Es zeigen:

Fig. 1
die schematische Darstellung eines Bohrtisches für eine Drehbohranlage mit demontierter Mitnehmerleiste;
Fig. 2
schematische Darstellung des Bohrtisches aus Fig. 1 mit montierten und mit Sicherungsplatten axial fixierten Mitnehmerleisten;
Fig. 3
die schematische Darstellung der Aufnahmehülse des Bohrtisches aus Fig. 1 mit Sicherungshülse in Explosionsdarstellung und
Fig. 4
schematische Darstellung der Anordnung aus Fig. 3 mit eingebrachten und gesicherten Mitnehmerleisten.
Other developments and refinements of the invention are specified in the remaining claims. An embodiment of the invention is illustrated in the drawings and will be described in detail below. Show it:
Fig. 1
the schematic representation of a drilling table for a rotary drilling rig with dismantled carrier strip;
Fig. 2
schematic representation of the drill table Fig. 1 with mounted and with securing plates axially fixed entrainment strips;
Fig. 3
the schematic representation of the receiving sleeve of the drill table Fig. 1 with safety sleeve in exploded view and
Fig. 4
schematic representation of the arrangement Fig. 3 with inserted and secured carriers.

Der als Ausführungsbeispiel gewählte Bohrtisch besteht im Wesentlichen aus einem an einem - nicht dargestellten - Mäkler verschiebbar montierbaren Schlittenteil 2, der einen Drehantrieb 3 aufnimmt, der über ein - nicht dargestelltes - Getriebe mit einer rotierbar angeordneten Aufnahmehülse 4 zur Aufnahme einer - nicht dargestellten - Kellystange verbunden ist. Die Aufnahmehülse 4 ist mit drei um jeweils 120 Grad versetzt angeordneten Mitnehmerleisten 5 versehen, welche durch in der Aufnahmehülse 4 eingebrachte Ausbrüche 41 durch die Wandung der Aufnahmehülse 4 hindurchragen und die über jeweils eine Sicherungsplatte 6 fixiert sind.The drilling table chosen as an exemplary embodiment essentially consists of a slide part 2, which is displaceably mounted on a leader (not shown) and receives a rotary drive 3 which has a gear (not shown) with a rotatably arranged receiving sleeve 4 for receiving a Kelly bar (not shown) connected is. The receiving sleeve 4 is provided with three arranged offset by 120 degrees Mitnehmerleisten 5, which protrude through introduced in the receiving sleeve 4 outbreaks 41 through the wall of the receiving sleeve 4 and which are fixed via a respective backup plate 6.

Der allgemeine Aufbau eines solchen Bohrtisches zur Aufnahme einer Kellystange ist dem Fachmann hinreichend bekannt, weshalb der Schwerpunkt der weiteren Beschreibung auf die Ausgestaltung und Anordnung der Aufnahmehülse 4 sowie der von dieser aufgenommenen Mitnehmerleisten 5 gelegt ist.The general structure of such a drilling table for receiving a kelly bar is sufficiently known to the person skilled in the art, which is why the focus of the further description is placed on the design and arrangement of the receiving sleeve 4 and the driver strips 5 received by this.

Die Aufnahmehülse 4 ist im Wesentlichen hohlzylindrisch ausgeführt und weist an ihrem dem Schlittenteil 2 entgegengesetzten Ende einen radial auskragenden Anschlagring 40 zur Anlage eines an der aufzunehmenden Kellystange angeordneten Auflagerings auf. Zwischen Anschlagring 40 und Schlittenteil 2 sind in die Aufnahmehülse 4 jeweils um 120 Grad versetzt rechteckig ausgebildete Ausbrüche 41 eingebracht. An den beiden Längsseiten der Ausbrüche 41 ist in der Aufnahmehülse 4 jeweils eine Stufe 42 zur Anlage der Überstände 51 der Mitnehmerleisten 5 angeordnet. Weiterhin sind Gewindebohrungen 43 zur Aufnahme von Schrauben 62 zur Befestigung einer Sicherungsplatte 6 angeordnet.The receiving sleeve 4 is designed substantially hollow cylindrical and has at its end opposite the carriage part 2 a radially projecting stop ring 40 for the application of a arranged on the male Kelly bar support ring on. Between stop ring 40 and slide part 2 are in the receiving sleeve 4 offset by 120 degrees rectangular trained outbreaks 41 introduced. On the two longitudinal sides of the outbreaks 41, a step 42 for supporting the projections 51 of the entrainment strips 5 is arranged in the receiving sleeve 4. Furthermore, threaded bores 43 are arranged for receiving screws 62 for fastening a securing plate 6.

Die Mitnehmerleisten 5 sind im Wesentlichen quaderförmig ausgebildet. An ihren beiden Längsseiten ist an den Mitnehmerleisten 5 ein seitlich auskragender Überstand 51 angeformt, wodurch die Mitnehmerleisten einen T-förmigen Querschnitt aufweisen. Die Tiefe der Mitnehmerleiste 5 ist derart gewählt, dass diese bei Anschlag der seitlichen Überstände 51 an die Stufe 42 durch die Wandung der Aufnahmehülse 4 hindurchtritt und innen in ausreichendem Maße übersteht. Die Mitnehmerleiste 5 ist derart ausgebildet, dass sich deren Außenfläche 53 bei Anliegen der seitlichen Überstände 51 an der Stufe 42 in die Mantelfläche 44 der Aufnahmehülse 4 einfügt. Die so an den Stufen 42 der Aufnahmehülse 4 anliegenden Mitnehmerleisten 5 sind über jeweils eine Sicherungsplatte 6 axial gesichert, die über Schrauben 62 die Mitnehmerleiste 5 vollständig überdeckend an der Aufnahmehülse 4 befestigt sind.The Mitnehmerleisten 5 are formed substantially cuboid. On its two longitudinal sides, a laterally projecting projection 51 is integrally formed on the carrier strips 5, whereby the carrier strips have a T-shaped cross-section. The depth of the carrier strip 5 is chosen such that it passes through the wall 42 of the receiving sleeve 4 at stop of the lateral projections 51 to the step and inside a sufficient extent. The carrier strip 5 is designed such that its outer surface 53 inserts into the lateral surface 44 of the receiving sleeve 4 when the lateral projections 51 abut against the step 42. The voltage applied to the steps 42 of the receiving sleeve 4 carrier strips 5 are axially secured via a respective backup plate 6, which are secured by screws 62, the driver bar 5 completely overlapping on the receiving sleeve 4.

In den Figuren 3 und 4 ist eine alternative Möglichkeit der axialen Sicherung der Mitnehmerleisten 5 gezeigt. Hierbei ist anstelle der Sicherungsplatten 6 auf die Aufnahmehülse 4 eine Sicherungshülse 7 rotierbar angeordnet. Die Sicherungshülse 7 ist umlaufend jeweils um 120 Grad zueinander versetzt mit rechteckförmigen Öffnungen 71 versehen, welche in ihrer Höhe sowie in ihrer Breite größer sind, als die mit Überständen 51 versehenen Mitnehmerleisten 5. Zur Montage der Mitnehmerleisten 5 wird die Sicherungshülse 7 derart auf der Aufnahmehülse 4 rotiert, dass die Öffnungen 71 mit den Ausbrüchen 41 der Aufnahmehülse 4 fluchten. Nach Einbringen der Mitnehmerleisten 5 durch die Ausbrüche 41 derart, dass die Überstände 51 an den Stufen 42 anliegen, wird die Sicherungshülse 7 um etwa 60 Grad rotiert, wodurch alle drei Mitnehmerleisten 5 axial gesichert sind (vgl. Fig. 4). Die Sicherung dieser Position der Sicherheitshülse 7 erfolgt beispielsweise mittels einer Schraube oder eines Bolzens. Für den Fall, dass die Mitnehmerleisten 5 über die Mantelfläche 44 der Aufnahmehülse 4 hervorragen, kann die Sicherungshülse 7 auf ihrer Innenwand mit einer umlaufenden Nut versehen sein, deren Breite etwa der Höhe der überstehenden Mitnehmerleiste 5 entspricht. Zur Demontage der Mitnehmerleisten 5 wird die Sicherungshülse 7 wiederum um etwa 60 Grad rotiert, wodurch die Mitnehmerleisten 5 zur Entnahme freigegeben werden.In the FIGS. 3 and 4 an alternative possibility of axial securing of the carrier strips 5 is shown. Here, instead of the locking plates 6 on the receiving sleeve 4, a securing sleeve 7 is arranged rotatably. The safety sleeve 7 is circumferentially offset by 120 degrees to each other with rectangular openings 71, which are greater in height and in width, as provided with supernatants 51 entrainment 5. For mounting the entrainment 5, the securing sleeve 7 so on the receiving sleeve 4 rotates that the openings 71 are aligned with the openings 41 of the receiving sleeve 4. After introduction of the entrainment 5 by the outbreaks 41 such that the supernatants 51 abut the steps 42, the locking sleeve 7 is rotated by about 60 degrees, whereby all three driver strips 5 are axially secured (see. Fig. 4 ). Securing this position of the safety sleeve 7, for example, by means of a screw or a bolt. In the event that the carrier strips 5 over the lateral surface 44 of the receiving sleeve 4 protrude, the securing sleeve 7 may be provided on its inner wall with a circumferential groove whose width corresponds approximately to the height of the protruding cam 5. To disassemble the carrier strips 5, the securing sleeve 7 is in turn rotated by about 60 degrees, whereby the carrier strips 5 are released for removal.

Claims (11)

Bohrtisch für eine Drehbohranlage, mit einer mittels eines Drehantriebes rotierbaren Aufnahmehülse zur Aufnahme einer mit Mitnehmerkonturen versehenen Kellystange, wobei an der Innenwand der Aufnahmehülse Koppelelemente zum Eingriff in die Mitnehmerkonturen der Kellystange zur Übertragung von Drehmoment und Vorspannkräften angeordnet sind, dadurch gekennzeichnet, dass in der Aufnahmehülse (4) Ausbrüche (41) eingebracht sind, durch welche die von außen einsetzbaren Koppelelemente (5) in den Hülseninnenraum hineinragend durchgeführt sind.Drill table for a rotary drilling rig, with a rotatable by means of a rotary drive receiving sleeve for receiving a Mitnehmerkonturen provided Kelly bar, being arranged on the inner wall of the receiving sleeve coupling elements for engagement in the Mitnehmerkonturen Kelly rod for transmitting torque and biasing forces, characterized in that in the receiving sleeve (4) outbreaks (41) are introduced, through which the externally usable coupling elements (5) are carried out protruding into the sleeve interior. Bohrtisch nach Anspruch 1, dadurch gekennzeichnet, dass die Koppelelemente zumindest teilweise als Mitnehmerleisten (5) ausgeführt sind.Drill table according to claim 1, characterized in that the coupling elements are at least partially designed as entrainment strips (5). Bohrtisch nach Anspruch 2, dadurch gekennzeichnet, dass wenigstens eine Mitnehmerleiste (5) zumindest an ihren beiden Längsseiten einen seitlich auskragenden Überstand (51) aufweist, wodurch ein T-förmiger Querschnitt gebildet ist.Drill table according to claim 2, characterized in that at least one driver bar (5) has at least on its two longitudinal sides a projecting overhanging projection (51), whereby a T-shaped cross-section is formed. Bohrtisch nach Anspruch 3, dadurch gekennzeichnet, dass wenigstens eine Mitnehmerleiste (5) mit ihren seitlichen Überständen (51) an der einen Ausbruch (41) umgebenden Außenwandung der Aufnahmehülse (4) anliegt, wobei in den seitlichen Überständen (51) Bohrungen eingebracht sind, durch welche die Mitnehmerleiste (5) über Schrauben mit der Aufnahmehülse (4) verschraubt ist.Drill table according to claim 3, characterized in that at least one driver bar (5) with its lateral projections (51) on the one outbreak (41) surrounding outer wall of the receiving sleeve (4), wherein in the lateral projections (51) bores are introduced, by which the carrier strip (5) is screwed by screws with the receiving sleeve (4). Bohrtisch nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass in der Aufnahmehülse (4) an zwei gegenüberliegenden Seiten wenigstens eines Ausbruchs (41) eine Stufe (42) angeordnet ist, wodurch ein Anschlag gebildet ist, an dem eine Mitnehmerleiste (5) mit ihren seitlichen Überständen (51) anliegt.Drilling table according to claim 3 or 4, characterized in that in the receiving sleeve (4) on two opposite sides of at least one outbreak (41) has a step (42) is arranged, whereby a stop is formed, on which a driving bar (5) with their lateral projections (51) is present. Bohrtisch nach Anspruch 5, dadurch gekennzeichnet, dass die Stufe (42) und die Mitnehmerleiste (5) derart ausgebildet sind, dass sich die Außenfläche (52) der an der Stufe (42) anliegenden Mitnehmerleiste (5) in die Mantelfläche (44) der Aufnahmehülse (4) einfügt.Drilling table according to claim 5, characterized in that the step (42) and the carrier strip (5) are formed such that the outer surface (52) of the at the stage (42) adjacent carrier strip (5) in the lateral surface (44) of Inserting receiving sleeve (4). Bohrtisch nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass Mittel zur radialen Sicherung wenigstens einer Mitnehmerleiste (5) an der Aufnahmehülse (4) angeordnet sind.Drilling table according to claim 5 or 6, characterized in that means for radial securing at least one driver strip (5) on the receiving sleeve (4) are arranged. Bohrtisch nach Anspruch 7, dadurch gekennzeichnet, dass die Mittel zur radialen Sicherung durch eine Sicherungsplatte (6) gebildet sind, welche, eine Mitnehmerleiste (5) zumindest bereichsweise überdeckend, an der Außenwandung der Aufnahmehülse (4) lösbar befestigt ist.Drill table according to claim 7, characterized in that the means for radial securing by a locking plate (6) are formed, which, at least partially overlapping a driver bar (5), on the outer wall of the receiving sleeve (4) is releasably secured. Bohrtisch nach Anspruch 7, dadurch gekennzeichnet, dass die Mittel zur radialen Sicherung der Mitnehmerleisten (5) durch eine Sicherungshülse (7) gebildet sind, die auf die Aufnahmehülse (4) aufgeschoben ist.Drill table according to claim 7, characterized in that the means for radial securing of the carrier strips (5) by a securing sleeve (7) are formed, which is pushed onto the receiving sleeve (4). Bohrtisch nach Anspruch 9, dadurch gekennzeichnet, dass in der Sicherungshülse (7) Öffnungen eingebracht sind, die in ihrer Länge und Breite zumindest gleich groß wie die entsprechenden Abmessungen der Ausbrüche (41) der Aufnahmehülse (4) sind, wobei die Sicherungshülse (7) auf der Aufnahmehülse (4) rotierbar ist.Drill table according to claim 9, characterized in that in the securing sleeve (7) openings are introduced, which in their length and width are at least as large as the corresponding dimensions of the outbreaks (41) of the receiving sleeve (4), wherein the securing sleeve (7) on the receiving sleeve (4) is rotatable. Drehbohranlage mit einem entlang eines Mäklers geführten, eine Aufnahmehülse aufweisenden Bohrtisch nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass in der Aufnahmehülse (4) eine Kellystange eingebracht ist, die an ihrem Außenumfang eine Mitnehmerkontur aufweist, in welche die durch die Ausbrüche (41) der Aufnahmehülse (4) geführten Mitnehmerleisten (5) eingreifen.Rotary drilling machine with a guided along a Mäklers, a receiving sleeve having drilling table according to one of the preceding claims, characterized in that in the receiving sleeve (4) has a Kelly bar is introduced, which has on its outer periphery a Mitnehmerkontur, in which by the outbreaks (41) engage the receiving sleeve (4) guided carrier strips (5).
EP14151195.6A 2013-02-06 2014-01-14 Drilling table Active EP2765271B1 (en)

Applications Claiming Priority (1)

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DE201320100548 DE202013100548U1 (en) 2013-02-06 2013-02-06 Drilling

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CN103982133A (en) * 2014-04-23 2014-08-13 洛阳雷斯达传动有限公司 Hydraulic turntable for pressure balance workover rigs

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DE202018104624U1 (en) 2018-07-06 2019-10-08 Liebherr-Components Biberach Gmbh drill
CN115853424B (en) * 2023-02-20 2023-05-05 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） Drilling equipment for geological exploration

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DE102011109001A1 (en) * 2011-07-29 2013-01-31 Abf-Bohrtechnik Gmbh & Co. Kg Drilling equipment for boring holes in foundation pile for e.g. building, has tool or intermediate piece extended through transverse bore, and another transverse bore arranged in middle part of walls in relation to cross section of rod

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US2777670A (en) * 1952-12-15 1957-01-15 Nat Supply Co Roller kelly bushing
DE1216218B (en) * 1962-07-20 1966-05-12 Koehring Co Drill rig
US3920087A (en) * 1973-07-16 1975-11-18 Gardner Denver Co Rotary drive and joint breakout mechanism
DE102011109001A1 (en) * 2011-07-29 2013-01-31 Abf-Bohrtechnik Gmbh & Co. Kg Drilling equipment for boring holes in foundation pile for e.g. building, has tool or intermediate piece extended through transverse bore, and another transverse bore arranged in middle part of walls in relation to cross section of rod

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Publication number Priority date Publication date Assignee Title
CN103982133A (en) * 2014-04-23 2014-08-13 洛阳雷斯达传动有限公司 Hydraulic turntable for pressure balance workover rigs
CN103982133B (en) * 2014-04-23 2016-04-13 洛阳雷斯达传动有限公司 A kind of hydraulic swivel head for pressure balance workover rig

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DE202013100548U1 (en) 2013-04-10
EP2765271B1 (en) 2016-04-27
US9458669B2 (en) 2016-10-04
US20140216820A1 (en) 2014-08-07

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