EP3599340B1 - Drilling device - Google Patents

Drilling device Download PDF

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Publication number
EP3599340B1
EP3599340B1 EP18185397.9A EP18185397A EP3599340B1 EP 3599340 B1 EP3599340 B1 EP 3599340B1 EP 18185397 A EP18185397 A EP 18185397A EP 3599340 B1 EP3599340 B1 EP 3599340B1
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EP
European Patent Office
Prior art keywords
rod
guide
pair
drilling
drill
Prior art date
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Active
Application number
EP18185397.9A
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German (de)
French (fr)
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EP3599340A1 (en
Inventor
Markus STRÄTER
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.)
Hazemag and EPR GmbH
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Hazemag and EPR GmbH
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Publication date
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Priority to PL18185397T priority Critical patent/PL3599340T3/en
Priority to EP18185397.9A priority patent/EP3599340B1/en
Publication of EP3599340A1 publication Critical patent/EP3599340A1/en
Application granted granted Critical
Publication of EP3599340B1 publication Critical patent/EP3599340B1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • 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
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal drilling

Definitions

  • the invention is directed to a drilling device comprising a guide frame, a guide table which is mounted on the guide frame so as to be movable in a longitudinal direction of the guide frame, and a drill drive which is fastened on the guide table and which has a motor-driven clamping head for rotating a drill rod and a rod. Implementation which enables a drill rod released by the clamping head to be pulled through the drill drive.
  • a drilling device for horizontal drilling comprising a drill head, a drill rod and a drive device which is designed for the rotary drive and feed drive of the drill rod.
  • the drill rod has an inner rod and an outer rod, between which an annular space for guiding a flushing fluid from a rotary connection to the drill head is formed.
  • the inner linkage comprises a straightening space which extends from the drive device to a terminating element on the drill head side. At least part of a targeting device for controlling the direction of the drill head is arranged in the straightening space.
  • a rod positioning device which is attached to a frame and moves a drill rod from a magazine into the drilling axis in order to then connect the drill rod to a drill rod already arranged in the drilling axis.
  • a Kelly bar drilling device which is driven to rotate by a drill head, the drilling device having at least one outer Kelly bar which is arranged only below the drill head and which is either one on the drill head provided rotating transition piece or is driven by the next inner Kelly bar. At least the outermost Kelly bar does not run through the drill head, so that the diameter of the drill head can be kept small and yet a great drilling depth can be achieved.
  • a drilling device for creating a borehole in a ground is known, a drill rod being driven to rotate via a drive shaft of a rotary drive and being introduced into the ground in order to create the borehole.
  • a fluid is supplied to the borehole through the tubular drill pipe, a standpipe being introduced into an upper region of the ground in a rotating manner by means of the rotary drive of the drill pipe.
  • the standpipe surrounds the drill pipe, an annulus being formed between the drill pipe and the stand pipe.
  • the standpipe is decoupled from the rotary drive and fixed in a stationary manner by means of a holding device, with the drill rod for creating the borehole being introduced through the stationary standpipe into a lower area of the floor. Fluid rising from the borehole is discharged from the borehole via the annular space and discharged in a defined manner via an ejection head with an ejection opening.
  • a drilling device of the type described above is known from the prior art and is used, for example, to carry out core drilling with suitable drill rods.
  • several drill rods are connected to one another and form a drill string.
  • the disadvantage of this known drilling device is that replacing a defective drill head is very time-consuming, since the drill string consisting of several drill pipes can only be pulled out of the drill hole in batches for each individual drill pipe due to the limited travel of the guide table. Introducing the drill string after replacing the defective one Drilling head is also very time-consuming due to the limited travel of the guide table.
  • such drilling devices can only be used to a limited extent for measuring boreholes. Because of the limited travel of the guide table and the usually too low travel speed of the guide table, the known drilling devices are hardly suitable for radar measurements, for example, since the recording speed is insufficient to obtain spatial structural information on the geology and tectonics of the rocks.
  • the invention is based on the object of creating a solution which provides an improved drilling device in a structurally simple manner, with which a plurality of drill rods connected to one another to form a drill string can be quickly and continuously withdrawn from the borehole or inserted into the borehole and with which a continuous travel speed of the drill string that is suitable for measuring the rocks can be achieved.
  • a rod pushing device is attached to the guide frame, which can be connected to the drill rod in a force-locking manner and the drill rod is designed to move in the longitudinal direction of the guide frame.
  • the invention provides a drilling device which is characterized by a simple and inexpensive construction.
  • the component according to the invention of the rod pushing device now makes it possible to insert a drill string consisting of several drill rods into a borehole or to retrieve it from a borehole within a very short time.
  • the rod pushing device is an additional functional unit on the drilling device and is designed in such a way that certain functions on the drilling device, such as turning the drill string with the help of the clamping head and screwing and end screwing threaded connections of the drill rods, can still be performed and that the rod pushing device can be connected to existing drilling devices in the area of the guide frame can be adapted. Consequently, existing drilling devices can be retrofitted with the rod pushing device according to the invention.
  • the frictional connection provides a sufficient coefficient of friction to transport long drill strings for very deep holes.
  • the invention provides in an embodiment that the rod pushing device has at least one drive motor and at least one pair of transport rollers, of which at least one transport roller is drivingly connected to the at least one drive motor, with at least one transport roller of the at least one pair of transport rollers the other transport roller of the at least one pair of transport rollers can be moved towards or is mounted movably away from the other transport roller of the at least one pair of transport rollers, the at least one pair of transport rollers being designed to clamp or release the drill rod between them in a force-fitting manner.
  • the rod pushing device has at least one pressure bracket which is designed to be movable transversely to the longitudinal direction of the guide frame and on which a transport roller of the at least one pair of transport rollers is rotatably mounted.
  • the at least one pressure console can, for example, with the aid of a hydraulically operated pressure cylinder are moved transversely to the longitudinal direction of the guide frame.
  • the linkage pushing device has at least one pair of guide rollers, at least one guide roller of the at least one pair of guide rollers being movable towards the other guide roller of the at least one pair of guide rollers or from the other guide roller of the at least one Pair of guide rollers is mounted movably away, wherein the at least one pair of guide rollers is designed to guide the drill rod between them.
  • the guide rollers consequently support precise guidance of a drill string transported by the rod pushing device and align the drill string in the direction of the borehole and the drilling axis so that no unnecessary energy has to be applied to transport the drill string.
  • the rod pushing device has at least one pressure piece which is designed to be movable transversely to the longitudinal direction of the guide frame and on which a guide roller of the at least one pair of guide rollers is rotatably mounted.
  • the invention provides in a further embodiment that the rod pushing device has at least one mechanical pressure element which exerts a pressure force that urges the at least one pressure piece transversely to the longitudinal direction of the guide frame and moves the guide rollers towards one another. It is particularly favorable in terms of construction if the pressure element is designed as a spring element.
  • the at least one pressure bracket has a driver which is attached to one of the at least one pressure piece formed coupling approach is applied in such a way that the driver for releasing the drill rod when moving the transport rollers away from each other against the pressure force of the at least one mechanical pressure element is designed to move the guide rollers away from each other.
  • the guide rollers only perform a function that guides the drill string when the transport rollers clamp the drill string in a non-positive manner.
  • the invention provides in a further embodiment of the drilling device that the rod pushing device has a spacer which is arranged between the at least one pair of guide rollers and parallel to a drilling axis of the drill rod and which blocks a movement of the at least one pressure piece over the drilling axis.
  • the drilling axis corresponds to the direction in which the drill string is transported by the rod pusher.
  • a rod intercepting device with a clamping device is fastened to the guide frame, wherein the drill rod can be clamped with the aid of the clamping device.
  • One of the purposes of the rod interceptor is to hold the drill string in place during the drilling process when a new drill string is connected to the drill string to advance the borehole deeper.
  • the invention also provides in an embodiment that the drill drive is arranged between the rod intercepting device and the rod pushing device. Viewed from the direction of a borehole, the rod pushing device is thus arranged behind the auger drive.
  • the invention provides in a further embodiment that a pipe breaker is arranged between the pipe support device and the drill drive is. If the rod interception device fixes the drill string and the clamping device and the rod pushing device release the drill string, the rod breaking device can also fix the drill string and rotate it by 20 ° to 30 ° around the drilling axis in order to close a threaded connection between two drill rods loosen when the threaded connection is arranged between the rod intercepting device and the rod breaking device.
  • the clamping head is designed as a hollow spindle.
  • the drill rod can be clamped gently and comprehensively at any point.
  • a drilling device 1 according to the invention is shown in a perspective view.
  • the drilling device 1 is used, for example, to carry out core bores or for surveying, a suitable drill rod 2 being used in each case for this purpose.
  • two drill rods 2 are shown by way of example, wherein several drill rods 2 can be connected to one another via respective threaded connections to form a long drill string for very deep core bores.
  • the drilling device 1 according to the invention has a guide frame 3 and a guide table 4, the guide table 4 being mounted on the guide frame 3 so as to be movable in a longitudinal direction 5 of the guide frame 3.
  • the drilling device 1 has a drill drive 6, a rod catching device 7, a rod breaking device 8 and a rod pushing device 9.
  • the drilling device 1 is arranged on a transport frame 10, with three lifting cylinders 11 serving to align the transport frame 10.
  • a mechanical support 12 and hydraulic cylinders 14 are attached to the transport frame 10, and the drilling device 1 can be positioned at a desired drilling angle via the mechanical support 12 and the hydraulic cylinders 14.
  • a conveyor trough 15 is also attached to the guide frame 3 and serves to receive the cores obtained during core drilling.
  • the drill drive 6 is fastened to the guide table 4 and has a motor-driven clamping head for rotating the drill rod 2 and a rod bushing 19, which are shown in Figure 2 is shown.
  • the rod bushing 19 enables a drill rod 2 released by the clamping head to be pulled through the drill drive 6, the clamping head being designed as a hollow spindle for this purpose.
  • the drill drive 6 further comprises a spur gear and a hydraulic motor, which are not shown in detail in the figures, since they are known from the prior art.
  • the linkage interception device 7 and the linkage breaking device 8 are attached to the guide frame 3 and in the Figures 3 to 5 shown in more detail, the rod breaking device 8 being arranged between the drill drive 6 and the rod intercepting device 7.
  • the rod interception device 7 has guide rollers 16 which serve to guide the drill rod 2 during drilling and of which in FIG Figure 4 only three of the four guide rollers 16 can be seen, and a clamping device 17 (see for example Figure 4 ), which is used to clamp the drill rod 2, the clamping device 17 is not in operation during drilling, but releases the drill rod 2.
  • the rod breaking device 8 has clamping pieces 18 rotatable about a drilling axis 32, which are used, for example, to loosen a threaded connection between two drill rods 2 by the clamping device 17 of the rod intercepting device 7 clamping a first drill rod 2, the clamping pieces 18 of the rod breaking device 8, clamp a second drill rod 2, which is connected to the first drill rod 2 via a threaded connection, and the clamping pieces 18 are rotated relative to the clamping device 17 about the drilling axis 32, around the position between the rod intercepting device 7 and the rod breaking device 8 arranged threaded connection of the two drill rods 2 to loosen.
  • the drill drive 6 is arranged between the rod interception device 7 and the rod pusher device 9, the rod pusher device 9 being attached to an extension of the guide frame 3 and being arranged between the conveyor trough 15 and the drill drive 6.
  • the linkage pusher 9 is in the Figures 6 to 8 shown in more detail and can be positively connected to the drill rod 2, the rod pushing device 9 being designed to move the drill rod 2 in the longitudinal direction 5 of the guide frame 3.
  • the rod pushing device 9 has a support bracket 20, via which the rod pushing device 9 is attached to the extension of the guide frame 3, and a housing 21.
  • two drive motors 22a, 22b are arranged on the housing 21 (see FIG Figure 6 ), each of the two drive motors 22a and 22b being drive-connected to a transport roller 23a or 23b of a pair of transport rollers 23a, 23b.
  • the two transport rollers 23a and 23b are each arched inward, ie concave, so that the transport rollers 23a and 23b securely grip the drill rod 2 between them (see, for example Figure 7 ).
  • only one drive motor can be provided for an alternative embodiment, which is drive-connected either to both transport rollers 23a and 23b or to only one of the two transport rollers 23a or 23b.
  • the rod pushing device 9 is only in operation to transport a drill string consisting of several drill rods 2 out of a borehole or into a borehole, this being the case when a defective drill head is replaced or for measuring purposes.
  • the transport rollers 23a and 23b are movably mounted, the two transport rollers 23a, 23b towards each other (around the drill string clamp) or away from each other (to release the drill string) are movably mounted.
  • the mobility of at least one of the two transport rollers 23a, 23b makes it possible for the pair of transport rollers 23a, 23b to clamp or release the drill rod 2 between them in a non-positive manner, with the transport rollers 23a, 23b being subjected to a corresponding radial force during clamping, so that a sufficiently high coefficient of friction is created to transport long drill strings.
  • the mobility of the transport rollers 23a or 23 shown in the exemplary embodiment is realized in that the rod pushing device 9 has two pressure brackets 24a and 24b, with FIG Figure 8 the pressure consoles 24a and 24b are not shown.
  • Each individual pressure bracket 24a, 24b can be moved transversely to the longitudinal direction 15 of the guide frame 3, a transport roller 23a, 23b being rotatably mounted on each printing bracket 24a, 24b and being driven by the assigned drive motor 22a, 22b.
  • Each pressure bracket 24a, 24b is drive-connected and movably mounted in the housing 21 with the aid of a hydraulically operated pressure cylinder 25a, 25b, with a respective pressure cylinder 25a, 25b transferring an associated pressure bracket 24a, 24b to or from the other pressure bracket 24a, 24b other print console 24a, 24b moved away from the direction.
  • the linkage pusher device 9 has a pair of guide rollers 26a and 26b which are rotatable on the linkage pusher device 9 stored and the drill pipe 2 are formed leading between them.
  • the guide rollers 26a, 26b like the transport rollers 23a, 23b, are mounted such that they can move towards one another, whereby it is alternatively also conceivable that only one guide roller 26a or 26b is mounted movably towards the other guide roller 26a or 26b or away from the other guide roller 26a or 26b is.
  • the mobility transversely to the longitudinal direction 5 of the guide frame is realized with the aid of pressure pieces 27a, 27b.
  • the pressure pieces 27a and 27b are movably mounted transversely to the longitudinal direction 5 of the guide frame 3, one of the guide rollers 26a, 26b of the pair of guide rollers 26a, 26b being rotatably mounted on each pressure piece 27a, 27b.
  • Each pressure piece 27a, 27b is a mechanical pressure element 28a, 28b (see Figure 8 ) assigned, each in the form of a compression spring and arranged within a cover open to the housing 21.
  • a respective pressure element 28a, 28b exerts a pressure force urging the assigned pressure piece 27a, 27b transversely to the longitudinal direction 5 of the guide frame 3 and moving the guide rollers 26a, 26b towards one another.
  • a driver 29a, 29b is formed on each pressure bracket 24a, 24b, whereas each Pressure piece 27a, 27b each have a coupling shoulder 30a, 30b.
  • Each of the drivers 29a, 29b rests against the coupling extension 30a, 30b assigned to it, and when the drill rod 2 is released by the transport rollers 23a, 23b moved away from each other, the guide rollers 26a, 26b are also moved away from each other by the drivers 29a, 29b Move pressure pieces 27a, 27b away from one another via the respective coupling lugs 30a, 30b, whereby the guide rollers 26a, 26b, which are rotatably mounted on the respective pressure piece 27a, 27b, move away from one another.
  • the rod pushing device 9 has a spacer 31 which ensures that when the drill rod 2 is clamped, the guide rollers 23a, 23b are arranged at a greater distance from the drill rod 2 than the transport rollers 23a, 23b mounted on the corresponding pressure bracket 24a, 24b.
  • the spacer 31 is arranged between the pair of guide rollers 26a, 26b and parallel to a drilling axis 32 of the drill rod 2. In addition, the spacer 31 blocks a movement of the pressure pieces 27a, 27b over the drilling axis 32 (see for example Figure 8 ).
  • a drilling device 1 with a rod pusher device 9 has been presented above, the rod pusher device enabling quick insertion and recovery of very long drill strings of, for example, 50-100 meters into or out of a very deep borehole.
  • the rod pushing device 9 is attached to the drilling device 1 as an additional functional unit.
  • Transport rollers 23a, 23b are driven via one or two drive motors 22a, 22b, the transport rollers 23a, 23b being subjected to a corresponding radial force for transporting a drill string, so that a sufficiently high coefficient of friction is created to transport a long drill string.
  • the rotary movement of the driven transport rollers 23a, 23b transports the drill string in the axial direction (longitudinal direction 5 of the guide frame 3).
  • the transport path of the drill rod can be measured and the output value can be processed accordingly via a rotary encoder, which is fastened on an axis of the transport rollers 23a, 23b, and a control connected to the rotary encoder.
  • Two additional guide roles 26a, 26b ensure that the drill rod 2 is held in the drilling axis 32 of the drilling device 1.
  • the rod pushing device 9 is designed such that the drill string is always moved in the center of the drilling axis 32.
  • the pressure of the transport rollers 23a, 23b can be released and reapplied via an adjustment mechanism, so that certain functions can be performed on the drilling device 1 despite the attached rod pusher device 9, such as rotating the drill string with the aid of a clamping head and the Ver - and end screws of the threaded connections with the help of a clamping head.
  • the rod pushing device 9 is designed so that it can be adapted to existing drilling devices 1 in the area of the guide frame 3.
  • linkage pushing device 9 can also have several pairs of transport rollers and / or several pairs of guide rollers, even if only one pair of transport rollers 23a, 23b and guide rollers 26a, 26b is shown in the exemplary embodiment shown in the figures .
  • the invention includes everything that is contained in the description and / or shown in the drawing, including that which deviates from the specific exemplary embodiment and is obvious to the person skilled in the art.

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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)

Description

Die Erfindung richtet sich auf eine Bohrvorrichtung, aufweisend einen Führungsrahmen, einen Führungstisch, welcher an dem Führungsrahmen in eine Längsrichtung des Führungsrahmens bewegbar gelagert ist, und einen auf dem Führungstisch befestigten Bohrantrieb, welcher einen motorisch angetriebenen Spannkopf zum rotatorischen Antreiben eines Bohrgestänges und eine Gestänge-Durchführung, welche ein Hindurchziehen eines von dem Spannkopf freigegebenen Bohrgestänges durch den Bohrantrieb hindurch ermöglicht, umfasst.The invention is directed to a drilling device comprising a guide frame, a guide table which is mounted on the guide frame so as to be movable in a longitudinal direction of the guide frame, and a drill drive which is fastened on the guide table and which has a motor-driven clamping head for rotating a drill rod and a rod. Implementation which enables a drill rod released by the clamping head to be pulled through the drill drive.

Aus der EP 2 505 762 A2 ist eine Bohrvorrichtung zum Horizontalbohren bekannt, wobei die Bohrvorrichtung einen Bohrkopf, ein Bohrgestänge und eine Antriebseinrichtung umfasst, welche zum Drehantrieb und Vorschubantrieb des Bohrgestänges ausgebildet ist. Das Bohrgestänge weist ein Innengestänge und ein Außengestänge auf, zwischen denen ein Ringraum zum Leiten einer Spülflüssigkeit von einem Drehanschluss zu dem Bohrkopf ausgebildet ist. Das Innengestänge umfasst einen Richtraum, welcher sich von der Antriebseinrichtung bis zu einem bohrkopfseitigen Abschlusselement erstreckt. In dem Richtraum ist zumindest ein Teil einer Zieleinrichtung zur Richtungskontrolle des Bohrkopfes angeordnet.From the EP 2 505 762 A2 a drilling device for horizontal drilling is known, the drilling device comprising a drill head, a drill rod and a drive device which is designed for the rotary drive and feed drive of the drill rod. The drill rod has an inner rod and an outer rod, between which an annular space for guiding a flushing fluid from a rotary connection to the drill head is formed. The inner linkage comprises a straightening space which extends from the drive device to a terminating element on the drill head side. At least part of a targeting device for controlling the direction of the drill head is arranged in the straightening space.

Ferner ist aus der US 2017/328147 A1 eine Gestänge-Positionierungseinrichtung bekannt, die an einem Rahmen befestigt ist und ein Bohrgestänge aus einem Magazin in die Bohrachse bewegt, um das Bohrgestänge dann mit einem bereits in der Bohrachse angeordneten Bohrgestänge zu verbinden.Furthermore, from the US 2017/328147 A1 a rod positioning device is known which is attached to a frame and moves a drill rod from a magazine into the drilling axis in order to then connect the drill rod to a drill rod already arranged in the drilling axis.

Darüber hinaus ist aus der DE 40 38 424 C1 eine Kellystangen-Bohrvorrichtung bekannt, die von einem Bohrkopf drehend angetrieben ist, wobei die Bohrvorrichtung mindestens eine äußere Kellystange aufweist, die nur unterhalb des Bohrkopfes angeordnet ist und die entweder von einem am Bohrkopf vorgesehenen mitdrehenden Übergangsstück oder von der nächstinneren Kellystange angetrieben ist. Mindestens die äußerste Kellystange verläuft nicht durch den Bohrkopf hindurch, so dass der Durchmesser des Bohrkopfes kleingehalten und dennoch eine große Bohrtiefe erreicht werden kann.In addition, from the DE 40 38 424 C1 a Kelly bar drilling device is known which is driven to rotate by a drill head, the drilling device having at least one outer Kelly bar which is arranged only below the drill head and which is either one on the drill head provided rotating transition piece or is driven by the next inner Kelly bar. At least the outermost Kelly bar does not run through the drill head, so that the diameter of the drill head can be kept small and yet a great drilling depth can be achieved.

Schließlich ist aus der DE 10 2012 010199 A1 eine Bohrvorrichtung zum Erstellen eines Bohrloches in einem Boden bekannt, wobei ein Bohrgestänge über eine Antriebswelle eines Drehantriebs drehend angetrieben und zum Erstellen des Bohrloches in den Boden eingebracht wird. Durch das rohrförmige Bohrgestänge wird dem Bohrloch ein Fluid zugeführt, wobei ein Standrohr mittels des Drehantriebs des Bohrgestänges in einen oberen Bereich des Bodens drehend eingebracht wird. Das Standrohr umgibt das Bohrgestänge, wobei ein Ringraum zwischen dem Bohrgestänge und dem Standrohr gebildet ist. Das Standrohr wird von dem Drehantrieb entkoppelt und mittels einer Halteeinrichtung feststehend fixiert, wobei das Bohrgestänge zum Erstellen des Bohrloches durch das feststehende Standrohr hindurch in einen unteren Bereich des Bodens eingebracht wird. Aus dem Bohrloch aufsteigendes Fluid wird über den Ringraum aus dem Bohrloch abgeführt und über einen Auswurfkopf mit einer Auswurföffnung definiert abgeleitet.Finally from the DE 10 2012 010 199 A1 a drilling device for creating a borehole in a ground is known, a drill rod being driven to rotate via a drive shaft of a rotary drive and being introduced into the ground in order to create the borehole. A fluid is supplied to the borehole through the tubular drill pipe, a standpipe being introduced into an upper region of the ground in a rotating manner by means of the rotary drive of the drill pipe. The standpipe surrounds the drill pipe, an annulus being formed between the drill pipe and the stand pipe. The standpipe is decoupled from the rotary drive and fixed in a stationary manner by means of a holding device, with the drill rod for creating the borehole being introduced through the stationary standpipe into a lower area of the floor. Fluid rising from the borehole is discharged from the borehole via the annular space and discharged in a defined manner via an ejection head with an ejection opening.

Eine Bohrvorrichtung der vorstehend beschriebenen Art ist aus dem Stand der Technik bekannt und wird beispielsweise zur Durchführung von Kernbohrungen mit geeignetem Bohrgestänge eingesetzt. Bei sehr tiefen Kernbohrungen werden mehrere Bohrgestänge miteinander verbunden und bilden einen Bohrstrang. Von Nachteil bei dieser bekannten Bohrvorrichtung ist es, dass sich ein Austausch eines defekten Bohrkopfes sehr zeitaufwendig gestaltet, da aufgrund des begrenzten Verfahrweges des Führungstisches der aus mehreren Bohrgestängen bestehende Bohrstrang nur schubweise für jedes einzelne Bohrgestänge aus dem Bohrloch von der Bohrvorrichtung herausgezogen werden kann. Das Einführen des Bohrstranges nach dem Austausch des defekten Bohrkopfes gestaltet sich aufgrund des begrenzten Verfahrweges des Führungstisches ebenfalls sehr zeitaufwendig. Darüber hinaus können solche Bohrvorrichtungen nur begrenzt zur Vermessung von Bohrlöchern eingesetzt werden. Denn aufgrund des begrenzten Verfahrweges des Führungstisches und aufgrund der üblicherweise zu geringen Verfahrgeschwindigkeit des Führungstisches eignen sich die bekannten Bohrvorrichtungen kaum für beispielsweise Radarmessungen, da die Aufzeichnungsgeschwindigkeit unzureichend ist, um räumliche Strukturinformationen zur Geologie und Tektonik der Gesteine zu gewinnen.A drilling device of the type described above is known from the prior art and is used, for example, to carry out core drilling with suitable drill rods. In the case of very deep core drilling, several drill rods are connected to one another and form a drill string. The disadvantage of this known drilling device is that replacing a defective drill head is very time-consuming, since the drill string consisting of several drill pipes can only be pulled out of the drill hole in batches for each individual drill pipe due to the limited travel of the guide table. Introducing the drill string after replacing the defective one Drilling head is also very time-consuming due to the limited travel of the guide table. In addition, such drilling devices can only be used to a limited extent for measuring boreholes. Because of the limited travel of the guide table and the usually too low travel speed of the guide table, the known drilling devices are hardly suitable for radar measurements, for example, since the recording speed is insufficient to obtain spatial structural information on the geology and tectonics of the rocks.

Der Erfindung liegt die Aufgabe zugrunde eine Lösung zu schaffen, die auf konstruktiv einfache Weise eine verbesserte Bohrvorrichtung bereitstellt, mit welcher eine Vielzahl von zu einem Bohrstrang miteinander verbundenen Bohrgestängen zeitlich schnell und kontinuierlich aus dem Bohrloch herausgezogen oder in das Bohrloch eingeführt werden können und mit welcher eine kontinuierliche und für eine Vermessung der Gesteine geeignete Verfahrgeschwindigkeit des Bohrstrangs realisierbar ist.The invention is based on the object of creating a solution which provides an improved drilling device in a structurally simple manner, with which a plurality of drill rods connected to one another to form a drill string can be quickly and continuously withdrawn from the borehole or inserted into the borehole and with which a continuous travel speed of the drill string that is suitable for measuring the rocks can be achieved.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass eine Gestänge-Schubeinrichtung an dem Führungsrahmen befestigt ist, welche mit dem Bohrgestänge kraftschlüssig verbindbar und das Bohrgestänge in Längsrichtung des Führungsrahmens bewegend ausgebildet ist.This object is achieved according to the invention in that a rod pushing device is attached to the guide frame, which can be connected to the drill rod in a force-locking manner and the drill rod is designed to move in the longitudinal direction of the guide frame.

Vorteilhafte und zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous and expedient refinements and developments of the invention emerge from the subclaims.

Durch die Erfindung wird eine Bohrvorrichtung zur Verfügung gestellt, welche sich durch eine einfache und kostengünstige Konstruktion auszeichnet. Durch das erfindungsgemäße Bauteil der Gestänge-Schubeinrichtung ist es im Unterscheid zum Stand der Technik nun möglich, innerhalb kürzester Zeit einen aus mehreren Bohrgestängen bestehenden Bohrstrang in ein Bohrloch einzuführen oder aus einem Bohrloch zu bergen. Die Gestänge-Schubeinrichtung stellt eine zusätzliche Funktionseinheit an der Bohrvorrichtung dar und ist so konzipiert, dass gewisse Funktionen an der Bohrvorrichtung, wie zum Beispiel das Drehen des Bohrstranges mit Hilfe des Spannkopfes und das Ver- und Endschrauben von Gewindeverbindungen der Bohrgestänge, weiterhin gefahren werden können und dass die Gestänge-Schubeinrichtung an vorhandene Bohrvorrichtungen im Bereich des Führungsrahmens adaptiert werden kann. Folglich können vorhandene Bohrvorrichtungen mit der erfindungsgemäßen Gestänge-Schubeinrichtung nachgerüstet werden. Dabei liefert die kraftschlüssige Verbindung einen ausreichenden Reibungswert, um lange Bohrstränge für sehr tiefe Bohrungen zu transportieren.The invention provides a drilling device which is characterized by a simple and inexpensive construction. In contrast to the prior art, the component according to the invention of the rod pushing device now makes it possible to insert a drill string consisting of several drill rods into a borehole or to retrieve it from a borehole within a very short time. The rod pushing device is an additional functional unit on the drilling device and is designed in such a way that certain functions on the drilling device, such as turning the drill string with the help of the clamping head and screwing and end screwing threaded connections of the drill rods, can still be performed and that the rod pushing device can be connected to existing drilling devices in the area of the guide frame can be adapted. Consequently, existing drilling devices can be retrofitted with the rod pushing device according to the invention. The frictional connection provides a sufficient coefficient of friction to transport long drill strings for very deep holes.

Ein Verstellmechanismus sorgt dafür, dass trotz der Gestänge-Schubeinrichtung die herkömmlichen Funktionen an der Bohrvorrichtung gefahren werden können. Zu diesem Zweck sieht die Erfindung in Ausgestaltung vor, dass die Gestänge-Schubeinrichtung wenigstens einen Antriebsmotor und wenigstens ein Paar von Transportrollen aufweist, von denen mindestens eine Transportrolle mit dem wenigstens einen Antriebsmotor antriebsverbunden ist, wobei wenigstens eine Transportrolle des wenigstens einen Paares von Transportrollen auf die andere Transportrolle des wenigstens einen Paares von Transportrollen zu bewegbar oder von der anderen Transportrolle des wenigstens einen Paares von Transportrollen weg bewegbar gelagert ist, wobei das wenigstens eine Paar von Transportrollen das Bohrgestänge zwischen sich kraftschlüssig einspannend oder freigeben ausgebildet ist.An adjustment mechanism ensures that the conventional functions of the drilling device can be operated despite the rod pushing device. For this purpose, the invention provides in an embodiment that the rod pushing device has at least one drive motor and at least one pair of transport rollers, of which at least one transport roller is drivingly connected to the at least one drive motor, with at least one transport roller of the at least one pair of transport rollers the other transport roller of the at least one pair of transport rollers can be moved towards or is mounted movably away from the other transport roller of the at least one pair of transport rollers, the at least one pair of transport rollers being designed to clamp or release the drill rod between them in a force-fitting manner.

Dabei ist es für den zuvor genannten Verstellmechanismus von Vorteil, wenn in Ausgestaltung der Erfindung die Gestänge-Schubeinrichtung wenigstens eine Druckkonsole aufweist, welche quer zur Längsrichtung des Führungsrahmens bewegbar ausgebildet ist und an welcher eine Transportrolle des wenigstens einen Paares von Transportrollen drehbar gelagert ist. Die wenigstens eine Druckkonsole kann beispielsweise mit Hilfe eines hydraulisch betriebenen Andruckzylinders quer zur Längsrichtung des Führungsrahmens bewegt werden.It is advantageous for the aforementioned adjustment mechanism if, in an embodiment of the invention, the rod pushing device has at least one pressure bracket which is designed to be movable transversely to the longitudinal direction of the guide frame and on which a transport roller of the at least one pair of transport rollers is rotatably mounted. The at least one pressure console can, for example, with the aid of a hydraulically operated pressure cylinder are moved transversely to the longitudinal direction of the guide frame.

Die Erfindung sieht in weiterer Ausgestaltung vor, dass die Gestänge-Schubeinrichtung wenigstens ein Paar von Führungsrollen aufweist, wobei wenigstens eine Führungsrolle des wenigstens einen Paares von Führungsrollen auf die andere Führungsrolle des wenigstens einen Paares von Führungsrollen zu bewegbar oder von der anderen Führungsrolle des wenigstens einen Paares von Führungsrollen weg bewegbar gelagert ist, wobei das wenigstens eine Paar von Führungsrollen das Bohrgestänge zwischen sich führend ausgebildet ist. Die Führungsrollen unterstützen folglich eine genaue Führung eines von der Gestänge-Schubeinrichtung transportierten Bohrstranges und richten den Bohrstrang in Richtung des Bohrlochs und der Bohrachse aus, damit zum Transport des Bohrstranges keine unnötige Energie aufgebracht werden muss.The invention provides in a further embodiment that the linkage pushing device has at least one pair of guide rollers, at least one guide roller of the at least one pair of guide rollers being movable towards the other guide roller of the at least one pair of guide rollers or from the other guide roller of the at least one Pair of guide rollers is mounted movably away, wherein the at least one pair of guide rollers is designed to guide the drill rod between them. The guide rollers consequently support precise guidance of a drill string transported by the rod pushing device and align the drill string in the direction of the borehole and the drilling axis so that no unnecessary energy has to be applied to transport the drill string.

Dabei ist es in Ausgestaltung der Erfindung von Vorteil, wenn die Gestänge-Schubeinrichtung wenigstens ein Druckstück aufweist, welches quer zur Längsrichtung des Führungsrahmens bewegbar ausgebildet ist und an welcher eine Führungsrolle des wenigstens einen Paares von Führungsrollen drehbar gelagert ist.In an embodiment of the invention, it is advantageous if the rod pushing device has at least one pressure piece which is designed to be movable transversely to the longitudinal direction of the guide frame and on which a guide roller of the at least one pair of guide rollers is rotatably mounted.

Zur Bewegung des wenigstens einen Druckstücks sieht die Erfindung in weiterer Ausgestaltung vor, dass die Gestänge-Schubeinrichtung wenigstens ein mechanisches Druckelement aufweist, welches eine das wenigstens eine Druckstück quer zur Längsrichtung des Führungsrahmens drängende und die Führungsrollen aufeinander zu bewegende Druckkraft ausübt. Konstruktiv besonders günstig ist es dabei, wenn das Druckelement als ein Federelement ausgeführt ist.In order to move the at least one pressure piece, the invention provides in a further embodiment that the rod pushing device has at least one mechanical pressure element which exerts a pressure force that urges the at least one pressure piece transversely to the longitudinal direction of the guide frame and moves the guide rollers towards one another. It is particularly favorable in terms of construction if the pressure element is designed as a spring element.

Damit beim Freigeben das Bohrgestänge durch das wenigstens eine Paar von Transportrollen auch das wenigstens eine Paar von Führungsrollen das Bohrgestänge freigibt, ist in weiterer Ausgestaltung der Erfindung vorgesehen, dass die wenigstens eine Druckkonsole einen Mitnehmer aufweist, welcher an einem an dem wenigstens einen Druckstück ausgebildeten Kopplungsansatz derart anliegt, dass der Mitnehmer zur Freigabe des Bohrgestänges bei einer Bewegung der Transportrollen voneinander weg gegen die Druckkraft des wenigstens einen mechanischen Druckelements die Führungsrollen voneinander wegbewegend ausgebildet ist. Auf diese Weise üben die Führungsrollen lediglich dann eine den Bohrstrang führende Funktion aus, wenn die Transportrollen den Bohrstrang kraftschlüssig einspannen.So that when the drill pipe is released by the at least one pair of transport rollers, the at least one pair of guide rollers also releases the drill pipe, it is provided in a further embodiment of the invention that the at least one pressure bracket has a driver which is attached to one of the at least one pressure piece formed coupling approach is applied in such a way that the driver for releasing the drill rod when moving the transport rollers away from each other against the pressure force of the at least one mechanical pressure element is designed to move the guide rollers away from each other. In this way, the guide rollers only perform a function that guides the drill string when the transport rollers clamp the drill string in a non-positive manner.

Die Erfindung sieht in weiterer Ausgestaltung der Bohrvorrichtung vor, dass die Gestänge-Schubeinrichtung einen Abstandshalter aufweist, welcher zwischen dem wenigstens einen Paar von Führungsrollen und parallel zu einer Bohrachse des Bohrgestänges angeordnet ist und welcher eine Bewegung des wenigstens einen Druckstücks über die Bohrachse hinweg blockiert. Die Bohrachse entspricht dabei der Richtung, in welche der Bohrstrang von der Gestänge-Schubeinrichtung transportiert wird.The invention provides in a further embodiment of the drilling device that the rod pushing device has a spacer which is arranged between the at least one pair of guide rollers and parallel to a drilling axis of the drill rod and which blocks a movement of the at least one pressure piece over the drilling axis. The drilling axis corresponds to the direction in which the drill string is transported by the rod pusher.

In weiterer Ausgestaltung der Erfindung ist dann vorgesehen, dass eine Gestänge-Abfangvorrichtung mit einer Einspannvorrichtung an dem Führungsrahmen befestigt ist, wobei das Bohrgestänge mit Hilfe der Einspannvorrichtung einspannbar ist. Die Gestänge-Abfangvorrichtung dient unter anderem dem Zweck, den Bohrstrang beim Bohrvorgang festzuhalten, wenn ein neues Bohrgestänge mit dem Bohrstrang verbunden wird, um das Bohrloch tiefer voranzutreiben.In a further embodiment of the invention it is then provided that a rod intercepting device with a clamping device is fastened to the guide frame, wherein the drill rod can be clamped with the aid of the clamping device. One of the purposes of the rod interceptor is to hold the drill string in place during the drilling process when a new drill string is connected to the drill string to advance the borehole deeper.

Ferner sieht die Erfindung in Ausgestaltung vor, dass der Bohrantrieb zwischen der Gestänge-Abfangvorrichtung und der Gestänge-Schubeinrichtung angeordnet ist. Aus Richtung eines Bohrlochs betrachtet ist die Gestänge-Schubeinrichtung damit hinter dem Bohrantrieb angeordnet.The invention also provides in an embodiment that the drill drive is arranged between the rod intercepting device and the rod pushing device. Viewed from the direction of a borehole, the rod pushing device is thus arranged behind the auger drive.

Zum Auseinanderbau des aus mehreren Bohrgestängen bestehenden Bohrstrangs sieht die Erfindung in weiterer Ausgestaltung vor, dass zwischen der Gestänge-Abfangvorrichtung und dem Bohrantrieb eine Gestänge-Brecheinrichtung angeordnet ist. Wenn die Gestänge-Abfangvorrichtung den Bohrstrang fixiert und die Spanneinrichtung sowie die Gestänge-Schubeinrichtung den Bohrstrang freigeben, so kann die Gestänge-Brecheinrichtung den Bohrstrang ebenfalls fixieren und dabei um 20° bis 30° um die Bohrachse drehen, um eine Gewindeverbindung zwischen zwei Bohrgestängen zu lösen, wenn die Gewindeverbindung zwischen der Gestänge-Abfangvorrichtung und der Gestänge-Brecheinrichtung angeordnet ist.In order to dismantle the drill string consisting of several drill pipes, the invention provides in a further embodiment that a pipe breaker is arranged between the pipe support device and the drill drive is. If the rod interception device fixes the drill string and the clamping device and the rod pushing device release the drill string, the rod breaking device can also fix the drill string and rotate it by 20 ° to 30 ° around the drilling axis in order to close a threaded connection between two drill rods loosen when the threaded connection is arranged between the rod intercepting device and the rod breaking device.

Schließlich ist in Ausgestaltung der Erfindung vorgesehen, dass der Spannkopf als eine Hohlspindel ausgebildet ist. Bei einer solchen Ausgestaltung kann das Bohrgestänge an einer beliebigen Stelle umfassend schonend eingespannt werden. Zudem ist beim Ein- und Ausbau des Bohrgestänges ein Durchziehen des Bohrgestänges durch den Bohrantrieb möglich, wodurch sich besonders der Ein- und Ausbau langer Bohrstränge vereinfacht.Finally, it is provided in an embodiment of the invention that the clamping head is designed as a hollow spindle. With such a configuration, the drill rod can be clamped gently and comprehensively at any point. In addition, when installing and removing the drill string, it is possible to pull the drill string through the drill drive, which in particular simplifies the installation and removal of long drill strings.

Es versteht sich, dass die vorstehend genannten und nachstehenden noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen. Der Rahmen der Erfindung ist nur durch die Ansprüche definiert.It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or on their own, without departing from the scope of the present invention. The scope of the invention is defined only by the claims.

Weitere Einzelheiten, Merkmale und Vorteile des Gegenstandes der Erfindung ergeben sich aus der nachfolgenden Beschreibung im Zusammenhang mit der Zeichnung, in der ein beispielhaftes und bevorzugtes Ausführungsbeispiel der Erfindung dargestellt ist.Further details, features and advantages of the subject matter of the invention emerge from the following description in connection with the drawing, in which an exemplary and preferred embodiment of the invention is shown.

In der Zeichnung zeigt:

  • Figur 1 eine perspektivische Ansicht auf eine erfindungsgemäße Bohrvorrichtung,
  • Figur 2 eine perspektivische Ansicht auf einen Ausschnitt der erfindungsgemäßen Bohrvorrichtung,
  • Figur 3 eine perspektivische Ansicht auf eine Gestänge-Abfangvorrichtung und eine Gestänge-Brecheinrichtung der erfindungsgemäßen Bohrvorrichtung,
  • Figur 4 eine perspektivische Detailansicht auf die Gestänge-Abfangvorrichtung aus Figur 3,
  • Figur 5 eine perspektivische Detailansicht auf die Gestänge-Brecheinrichtung aus Figur 3,
  • Figur 6 eine perspektivische Ansicht einer Gestänge-Schubeinrichtung der erfindungsgemäßen Bohrvorrichtung,
  • Figur 7 eine Perspektivansicht auf die Gestänge-Schubeinrichtung aus Figur 6, wobei Gehäuseelemente entfernt sind, und
  • Figur 8 eine Schnittansicht der Gestänge-Schubeinrichtung aus Figur 6.
In the drawing shows:
  • Figure 1 a perspective view of a drilling device according to the invention,
  • Figure 2 a perspective view of a section of the drilling device according to the invention,
  • Figure 3 a perspective view of a rod intercepting device and a rod breaking device of the drilling device according to the invention,
  • Figure 4 a perspective detailed view of the linkage interception device Figure 3 ,
  • Figure 5 a perspective detailed view of the linkage breaking device Figure 3 ,
  • Figure 6 a perspective view of a rod pushing device of the drilling device according to the invention,
  • Figure 7 a perspective view of the linkage pusher Figure 6 , with housing elements removed, and
  • Figure 8 a sectional view of the linkage pusher Figure 6 .

In Figur 1 ist eine erfindungsgemäße Bohrvorrichtung 1 in perspektivischer Ansicht dargestellt. Die Bohrvorrichtung 1 wird beispielsweise zur Durchführung von Kernbohrungen oder zur Vermessung eingesetzt, wobei dazu jeweils ein geeignetes Bohrgestänge 2 eingesetzt wird. In Figur 1 sind zwei Bohrgestänge 2 exemplarisch dargestellt, wobei mehrere Bohrgestänge 2 über jeweilige Gewindeverbindungen zu einem langen Bohrstrang für sehr tiefe Kernbohrungen miteinander verbunden werden können. Die erfindungsgemäße Bohrvorrichtung 1 weist einen Führungsrahmen 3 und einen Führungstisch 4 auf, wobei der Führungstisch 4 an dem Führungsrahmen 3 in eine Längsrichtung 5 des Führungsrahmens 3 bewegbar gelagert ist. Ferner weist die Bohrvorrichtung 1 einen Bohrantrieb 6, eine Gestänge-Abfangvorrichtung 7, eine Gestänge-Brecheinrichtung 8 und eine Gestänge-Schubeinrichtung 9 auf. Die Bohrvorrichtung 1 ist auf einem Transportrahmen 10 angeordnet, wobei drei Hubzylinder 11 dazu dienen, den Transportrahmen 10 auszurichten. Eine mechanische Stütze 12 und Hydraulikzylinder 14 sind an dem Transportrahmen 10 angebracht, wobei über die mechanische Stütze 12 und die Hydraulikzylinder 14 die Bohrvorrichtung 1 in einem gewünschten Bohrwinkel positioniert werden kann. An dem Führungsrahmen 3 ist ferner eine Förderrinne 15 angebracht, die zur Aufnahme der bei Kernbohrungen gewonnenen Kerne dient.In Figure 1 a drilling device 1 according to the invention is shown in a perspective view. The drilling device 1 is used, for example, to carry out core bores or for surveying, a suitable drill rod 2 being used in each case for this purpose. In Figure 1 two drill rods 2 are shown by way of example, wherein several drill rods 2 can be connected to one another via respective threaded connections to form a long drill string for very deep core bores. The drilling device 1 according to the invention has a guide frame 3 and a guide table 4, the guide table 4 being mounted on the guide frame 3 so as to be movable in a longitudinal direction 5 of the guide frame 3. Furthermore, the drilling device 1 has a drill drive 6, a rod catching device 7, a rod breaking device 8 and a rod pushing device 9. The drilling device 1 is arranged on a transport frame 10, with three lifting cylinders 11 serving to align the transport frame 10. A mechanical support 12 and hydraulic cylinders 14 are attached to the transport frame 10, and the drilling device 1 can be positioned at a desired drilling angle via the mechanical support 12 and the hydraulic cylinders 14. A conveyor trough 15 is also attached to the guide frame 3 and serves to receive the cores obtained during core drilling.

Der Bohrantrieb 6 ist auf dem Führungstisch 4 befestigt und weist einen motorisch angetriebenen Spannkopf zum rotatorischen Antreiben des Bohrgestänges 2 und eine Gestänge-Durchführung 19 auf, die ansatzweise in Figur 2 gezeigt ist. Die Gestänge-Durchführung 19 ermöglicht ein Hindurchziehen eines von dem Spannkopf freigegebenen Bohrgestänges 2 durch den Bohrantrieb 6 hindurch, wobei zu diesem Zweck der Spannkopf als eine Hohlspindel ausgebildet ist. Der Bohrantrieb 6 umfasst ferner ein Stirnradgetriebe und einen Hydraulikmotor, welche in den Figuren nicht näher dargestellt sind, da sie aus dem Stand der Technik bekannt sind.The drill drive 6 is fastened to the guide table 4 and has a motor-driven clamping head for rotating the drill rod 2 and a rod bushing 19, which are shown in Figure 2 is shown. The rod bushing 19 enables a drill rod 2 released by the clamping head to be pulled through the drill drive 6, the clamping head being designed as a hollow spindle for this purpose. The drill drive 6 further comprises a spur gear and a hydraulic motor, which are not shown in detail in the figures, since they are known from the prior art.

Die Gestänge-Abfangvorrichtung 7 und die Gestänge-Brecheinrichtung 8 sind an dem Führungsrahmen 3 befestigt und in den Figuren 3 bis 5 näher dargestellt, wobei die Gestänge-Brecheinrichtung 8 zwischen dem Bohrantrieb 6 und der Gestänge-Abfangvorrichtung 7 angeordnet ist. Die Gestänge-Abfangvorrichtung 7 weist Führungsrollen 16, welche zur Führung des Bohrgestänges 2 beim Bohren dienen und von denen in Figur 4 lediglich drei der vier Führungsrollen 16 zu erkennen sind, und eine Einspannvorrichtung 17 (siehe zum Beispiel Figur 4) auf, die zum Festklemmen des Bohrgestänges 2 dient, wobei die Einspannvorrichtung 17 beim Bohren nicht in Betrieb ist, sondern das Bohrgestänge 2 freigibt. Demgegenüber weist die Gestänge-Brecheinrichtung 8 um eine Bohrachse 32 drehbare Klemmstücke 18 auf, welche beispielsweise zum Lösen einer Gewindeverbindung zwischen zwei Bohrgestängen 2 dient, indem die Einspannvorrichtung 17 der Gestänge-Abfangvorrichtung 7 ein erstes Bohrgestänge 2 festklemmt, die Klemmstücke 18 der Gestänge-Brechvorrichtung 8 ein zweites Bohrgestänge 2, welches über eine Gewindeverbindung mit dem ersten Bohrgestänge 2 verbunden ist, festklemmen und die Klemmstücke 18 relativ zu der Einspannvorrichtung 17 um die Bohrachse 32 gedreht werden, um die zwischen der Gestänge-Abfangvorrichtung 7 und der Gestänge-Brechvorrichtung 8 angeordnete Gewindeverbindung der beiden Bohrgestänge 2 zu lösen.The linkage interception device 7 and the linkage breaking device 8 are attached to the guide frame 3 and in the Figures 3 to 5 shown in more detail, the rod breaking device 8 being arranged between the drill drive 6 and the rod intercepting device 7. The rod interception device 7 has guide rollers 16 which serve to guide the drill rod 2 during drilling and of which in FIG Figure 4 only three of the four guide rollers 16 can be seen, and a clamping device 17 (see for example Figure 4 ), which is used to clamp the drill rod 2, the clamping device 17 is not in operation during drilling, but releases the drill rod 2. In contrast, the rod breaking device 8 has clamping pieces 18 rotatable about a drilling axis 32, which are used, for example, to loosen a threaded connection between two drill rods 2 by the clamping device 17 of the rod intercepting device 7 clamping a first drill rod 2, the clamping pieces 18 of the rod breaking device 8, clamp a second drill rod 2, which is connected to the first drill rod 2 via a threaded connection, and the clamping pieces 18 are rotated relative to the clamping device 17 about the drilling axis 32, around the position between the rod intercepting device 7 and the rod breaking device 8 arranged threaded connection of the two drill rods 2 to loosen.

Wie aus Figur 1 ersichtlich ist, ist der Bohrantrieb 6 zwischen der Gestänge-Abfangvorrichtung 7 und der Gestänge-Schubeinrichtung 9 angeordnet, wobei die Gestänge-Schubeinrichtung 9 an einer Verlängerung des Führungsrahmens 3 befestigt ist und zwischen der Förderrinne 15 und dem Bohrantrieb 6 angeordnet ist. Die Gestänge-Schubeinrichtung 9 ist in den Figuren 6 bis 8 näher dargestellt und ist mit dem Bohrgestänge 2 kraftschlüssig verbindbar, wobei die Gestänge-Schubeinrichtung 9 das Bohrgestänge 2 in Längsrichtung 5 des Führungsrahmens 3 bewegend ausgebildet ist. Die Gestänge-Schubeinrichtung 9 weist eine Stützkonsole 20, über welche die Gestänge-Schubeinrichtung 9 an der Verlängerung des Führungsrahmens 3 befestigt ist, und ein Gehäuse 21 auf. In dem dargestellten Ausführungsbeispiel sind auf dem Gehäuse 21 zwei Antriebsmotoren 22a, 22b angeordnet (siehe Figur 6), wobei jeder der beiden Antriebsmotoren 22a bzw. 22b jeweils mit einer Transportrolle 23a bzw. 23b eines Paares von Transportrollen 23a, 23b antriebsverbunden ist. Die beiden Transportrollen 23a und 23b sind jeweils nach innen gewölbt, d.h. konkav, ausgebildet, so dass die Transportrollen 23a und 23b das Bohrgestänge 2 sicher zwischen sich erfassen (siehe zum Beispiel Figur 7). Es versteht sich, dass für eine alternative Ausgestaltung nur ein Antriebsmotor vorgesehen sein kann, der entweder mit beiden Transportrollen 23a und 23b oder nur mit einer der beiden Transportrollen 23a oder 23b antriebsverbunden ist. Die Gestänge-Schubeinrichtung 9 ist nur im Betrieb, um einen aus mehreren Bohrgestängen 2 bestehenden Bohrstrang aus einem Bohrloch oder in ein Bohrloch hinein zu transportieren, wobei dies bei einem Austausch eines defekten Bohrkopfes oder zu Messzwecken der Fall ist. Aus diesem Grund sind die Transportrollen 23a und 23b bewegbar gelagert, wobei die beiden Transportrollen 23a, 23b aufeinander zu (um den Bohrstrang einzuspannen) oder voneinander weg (um den Bohrstrang freizugeben) bewegbar gelagert sind. Alternativ ist es auch denkbar, dass nur eine Transportrolle 23a oder 23b quer zur Längsrichtung 5 des Führungsrahmens 3 bewegbar gelagert ist, so dass eine Transportrolle 23a oder 23b des Paares von Transportrollen 23a, 23b auf die andere Transportrolle 23a oder 23b des Paares von Transportrollen 23a, 23b zu bewegbar oder von der anderen Transportrolle 23a oder 23b des Paares von Transportrollen 23a, 23b weg bewegbar gelagert ist. Durch die Bewegbarkeit wenigstens einer der beiden Transportrollen 23a, 23b ist es möglich, dass das Paar von Transportrollen 23a, 23b das Bohrgestänge 2 zwischen sich kraftschlüssig einspannt oder freigibt, wobei beim Einspannen die Transportrollen 23a, 23b mit einer entsprechenden Radialkraft beaufschlagt werden, so dass ein ausreichend großer Reibwert entsteht, um lange Bohrstränge zu transportieren. Die Bewegbarkeit der in dem Ausführungsbeispiel gezeigten Transportrollen 23a oder 23 ist dadurch realisiert, dass die Gestänge-Schubeinrichtung 9 zwei Druckkonsolen 24a und 24b aufweist, wobei aus Gründen der Übersichtlichkeit in Figur 8 die Druckkonsolen 24a und 24b nicht gezeigt sind. Jede einzelne Druckkonsole 24a, 24b ist quer zur Längsrichtung 15 des Führungsrahmens 3 bewegbar, wobei an jeder Druckkonsole 24a, 24b jeweils eine Transportrolle 23a, 23b drehbar gelagert ist und von dem zugewiesenen Antriebsmotor 22a, 22b angetrieben werden kann. Jede Druckkonsole 24a, 24b ist jeweils mit Hilfe eines hydraulisch betriebenen Andruckzylinders 25a, 25b antriebsverbunden und bewegbar im Gehäuse 21 gelagert, wobei ein jeweiliger Andruckzylinder 25a, 25b eine zugeordnete Druckkonsole 24a, 24b in eine auf die andere Druckkonsole 24a, 24b hin oder von der anderen Druckkonsole 24a, 24b weg gerichtete Richtung bewegt.How out Figure 1 As can be seen, the drill drive 6 is arranged between the rod interception device 7 and the rod pusher device 9, the rod pusher device 9 being attached to an extension of the guide frame 3 and being arranged between the conveyor trough 15 and the drill drive 6. The linkage pusher 9 is in the Figures 6 to 8 shown in more detail and can be positively connected to the drill rod 2, the rod pushing device 9 being designed to move the drill rod 2 in the longitudinal direction 5 of the guide frame 3. The rod pushing device 9 has a support bracket 20, via which the rod pushing device 9 is attached to the extension of the guide frame 3, and a housing 21. In the illustrated embodiment, two drive motors 22a, 22b are arranged on the housing 21 (see FIG Figure 6 ), each of the two drive motors 22a and 22b being drive-connected to a transport roller 23a or 23b of a pair of transport rollers 23a, 23b. The two transport rollers 23a and 23b are each arched inward, ie concave, so that the transport rollers 23a and 23b securely grip the drill rod 2 between them (see, for example Figure 7 ). It goes without saying that only one drive motor can be provided for an alternative embodiment, which is drive-connected either to both transport rollers 23a and 23b or to only one of the two transport rollers 23a or 23b. The rod pushing device 9 is only in operation to transport a drill string consisting of several drill rods 2 out of a borehole or into a borehole, this being the case when a defective drill head is replaced or for measuring purposes. For this reason, the transport rollers 23a and 23b are movably mounted, the two transport rollers 23a, 23b towards each other (around the drill string clamp) or away from each other (to release the drill string) are movably mounted. Alternatively, it is also conceivable that only one transport roller 23a or 23b is movably mounted transversely to the longitudinal direction 5 of the guide frame 3, so that one transport roller 23a or 23b of the pair of transport rollers 23a, 23b on the other transport roller 23a or 23b of the pair of transport rollers 23a , 23b to or from the other transport roller 23a or 23b of the pair of transport rollers 23a, 23b is movably mounted away. The mobility of at least one of the two transport rollers 23a, 23b makes it possible for the pair of transport rollers 23a, 23b to clamp or release the drill rod 2 between them in a non-positive manner, with the transport rollers 23a, 23b being subjected to a corresponding radial force during clamping, so that a sufficiently high coefficient of friction is created to transport long drill strings. The mobility of the transport rollers 23a or 23 shown in the exemplary embodiment is realized in that the rod pushing device 9 has two pressure brackets 24a and 24b, with FIG Figure 8 the pressure consoles 24a and 24b are not shown. Each individual pressure bracket 24a, 24b can be moved transversely to the longitudinal direction 15 of the guide frame 3, a transport roller 23a, 23b being rotatably mounted on each printing bracket 24a, 24b and being driven by the assigned drive motor 22a, 22b. Each pressure bracket 24a, 24b is drive-connected and movably mounted in the housing 21 with the aid of a hydraulically operated pressure cylinder 25a, 25b, with a respective pressure cylinder 25a, 25b transferring an associated pressure bracket 24a, 24b to or from the other pressure bracket 24a, 24b other print console 24a, 24b moved away from the direction.

Wie den Figuren 6 bis 8 ferner zu entnehmen ist, weist die Gestänge-Schubeinrichtung 9 ein Paar von Führungsrollen 26a und 26b auf, welche drehbar an der Gestänge-Schubeinrichtung 9 gelagert und das Bohrgestänge 2 zwischen sich führend ausgebildet sind. Die Führungsrollen 26a, 26b sind wie die Transportrollen 23a, 23b aufeinander zu bewegbar gelagert, wobei es alternativ auch denkbar ist, dass nur eine Führungsrolle 26a oder 26b zu der anderen Führungsrolle 26a oder 26b hin oder von der anderen Führungsrolle 26a oder 26b weg bewegbar gelagert ist. Für die Führungsrollen 26a, 26b wird die Beweglichkeit quer zur Längsrichtung 5 des Führungsrahmens mit Hilfe von Druckstücken 27a, 27b realisiert. Die Druckstücke 27a und 27b sind quer zur Längsrichtung 5 des Führungsrahmens 3 bewegbar gelagert, wobei an jedem Druckstück 27a, 27b eine der Führungsrollen 26a, 26b des Paares von Führungsrollen 26a, 26b drehbar gelagert ist. Dabei ist jedem Druckstück 27a, 27b ein mechanisches Druckelement 28a, 28b (siehe Figur 8) zugewiesen, welches jeweils in Form einer Druckfeder ausgebildet ist und innerhalb einer zu dem Gehäuse 21 hin offenen Abdeckung angeordnet ist. Ein jeweiliges Druckelement 28a, 28b übt eine das zugeordnete Druckstück 27a, 27b quer zur Längsrichtung 5 des Führungsrahmens 3 drängende und die Führungsrollen 26a, 26b aufeinander zu bewegende Druckkraft aus. Damit die beiden Druckelemente 28a, 28b die Druckstücke 27a, 27b nicht dauerhaft mit dieser Druckkraft beaufschlagen und die Führungsrollen 26a, 26b in einer aufeinander zu bewegten Stellung halten, ist an jeder Druckkonsole 24a, 24b jeweils ein Mitnehmer 29a, 29b ausgebildet, wohingegen an jedem Druckstück 27a, 27b jeweils ein Kopplungsansatz 30a, 30b ausgebildet ist. Dabei liegt ein jeder der Mitnehmer 29a, 29b derart an dem ihm zugeordneten Kopplungsansatz 30a, 30b an, beim Freigeben des Bohrgestänges 2 durch die voneinander wegbewegten Transportrollen 23a, 23b auch die Führungsrollen 26a, 26b voneinander wegbewegt werden, indem die Mitnehmer 29a, 29b die Druckstücke 27a, 27b über den jeweiligen Kopplungsansatz 30a, 30b voneinander wegbewegen, wodurch sich die an dem jeweiligen Druckstück 27a, 27b drehbar gelagerten Führungsrolle 26a, 26b voneinander wegbewegen. Damit trotz erwünschter Führung durch die Führungsrollen 26a, 26b das Bohrgestänge 2 beispielsweise bei einem Einführen eines Bohrstrangs in ein sehr tiefes Bohrloch ausreichend ausgerichtet ist und nicht durch die Führungsrollen 23a, 23b fehlerhaft ausgerichtet ist, weist die Gestänge-Schubeinrichtung 9 einen Abstandshalter 31 auf, welcher dafür sorgt, dass beim Einspannen des Bohrgestänges 2 die Führungsrollen 23a, 23b in einem größeren Abstand zu dem Bohrgestänge 2 angeordnet sind als die an der entsprechenden Druckkonsole 24a, 24b gelagerten Transportrollen 23a, 23b. Der Abstandshalter 31 ist zwischen dem Paar von Führungsrollen 26a, 26b und parallel zu einer Bohrachse 32 des Bohrgestänges 2 angeordnet. Zusätzlich blockiert der Abstandshalter 31 eine Bewegung der Druckstücke 27a, 27b über die Bohrachse 32 hinweg (siehe zum Beispiel Figur 8).Like that Figures 6 to 8 It can also be seen that the linkage pusher device 9 has a pair of guide rollers 26a and 26b which are rotatable on the linkage pusher device 9 stored and the drill pipe 2 are formed leading between them. The guide rollers 26a, 26b, like the transport rollers 23a, 23b, are mounted such that they can move towards one another, whereby it is alternatively also conceivable that only one guide roller 26a or 26b is mounted movably towards the other guide roller 26a or 26b or away from the other guide roller 26a or 26b is. For the guide rollers 26a, 26b, the mobility transversely to the longitudinal direction 5 of the guide frame is realized with the aid of pressure pieces 27a, 27b. The pressure pieces 27a and 27b are movably mounted transversely to the longitudinal direction 5 of the guide frame 3, one of the guide rollers 26a, 26b of the pair of guide rollers 26a, 26b being rotatably mounted on each pressure piece 27a, 27b. Each pressure piece 27a, 27b is a mechanical pressure element 28a, 28b (see Figure 8 ) assigned, each in the form of a compression spring and arranged within a cover open to the housing 21. A respective pressure element 28a, 28b exerts a pressure force urging the assigned pressure piece 27a, 27b transversely to the longitudinal direction 5 of the guide frame 3 and moving the guide rollers 26a, 26b towards one another. So that the two pressure elements 28a, 28b do not permanently apply this pressure force to the pressure pieces 27a, 27b and hold the guide rollers 26a, 26b in a position moved towards one another, a driver 29a, 29b is formed on each pressure bracket 24a, 24b, whereas each Pressure piece 27a, 27b each have a coupling shoulder 30a, 30b. Each of the drivers 29a, 29b rests against the coupling extension 30a, 30b assigned to it, and when the drill rod 2 is released by the transport rollers 23a, 23b moved away from each other, the guide rollers 26a, 26b are also moved away from each other by the drivers 29a, 29b Move pressure pieces 27a, 27b away from one another via the respective coupling lugs 30a, 30b, whereby the guide rollers 26a, 26b, which are rotatably mounted on the respective pressure piece 27a, 27b, move away from one another. In order to Despite the desired guidance by the guide rollers 26a, 26b the drill rod 2 is sufficiently aligned, for example when inserting a drill string into a very deep borehole and is not misaligned by the guide rollers 23a, 23b, the rod pushing device 9 has a spacer 31 which ensures that when the drill rod 2 is clamped, the guide rollers 23a, 23b are arranged at a greater distance from the drill rod 2 than the transport rollers 23a, 23b mounted on the corresponding pressure bracket 24a, 24b. The spacer 31 is arranged between the pair of guide rollers 26a, 26b and parallel to a drilling axis 32 of the drill rod 2. In addition, the spacer 31 blocks a movement of the pressure pieces 27a, 27b over the drilling axis 32 (see for example Figure 8 ).

Zusammenfassend ist eine Bohrvorrichtung 1 mit einer Gestänge-Schubeinrichtung 9 vorstehend vorgestellt worden, wobei die Gestänge-Schubeinrichtung ein schnelles Einführen und Bergen von sehr langen Bohrsträngen von beispielsweise 50-100 Metern in- bzw. aus einem sehr tiefen Bohrloch ermöglicht. Die Gestänge-Schubeinrichtung 9 ist als zusätzliche Funktionseinheit an der Bohrvorrichtung 1 angebracht. Über ein oder zwei Antriebsmotoren 22a, 22b sind Transportrollen 23a, 23b angetrieben, wobei die Transportrollen 23a, 23b zum Transport eines Bohrstrangs mit einer entsprechenden Radialkraft beaufschlagt sind, so dass ein ausreichend großer Reibwert entsteht, um einen langen Bohrstrang zu transportieren. Durch die Drehbewegung der angetriebenen Transportrollen 23a, 23b wird der Bohrstrang in axialer Richtung (Längsrichtung 5 des Führungsrahmens 3) transportiert. Dabei kann über einen Drehgeber, der auf einer Achse der Transportrollen 23a, 23b befestigt ist, und eine mit dem Drehgeber verbundene Steuerung der Transportweg des Bohrgestänges gemessen und der Ausgabewert entsprechend verarbeitet werden. Zwei zusätzliche Führungsrollen 26a, 26b sorgen dafür, dass das Bohrgestänge 2 in der Bohrachse 32 der Bohrvorrichtung 1 gehalten ist.In summary, a drilling device 1 with a rod pusher device 9 has been presented above, the rod pusher device enabling quick insertion and recovery of very long drill strings of, for example, 50-100 meters into or out of a very deep borehole. The rod pushing device 9 is attached to the drilling device 1 as an additional functional unit. Transport rollers 23a, 23b are driven via one or two drive motors 22a, 22b, the transport rollers 23a, 23b being subjected to a corresponding radial force for transporting a drill string, so that a sufficiently high coefficient of friction is created to transport a long drill string. The rotary movement of the driven transport rollers 23a, 23b transports the drill string in the axial direction (longitudinal direction 5 of the guide frame 3). In this case, the transport path of the drill rod can be measured and the output value can be processed accordingly via a rotary encoder, which is fastened on an axis of the transport rollers 23a, 23b, and a control connected to the rotary encoder. Two additional guide roles 26a, 26b ensure that the drill rod 2 is held in the drilling axis 32 of the drilling device 1.

Die Gestänge-Schubeinrichtung 9 ist so ausgebildet, dass der Bohrstrang immer im Zentrum der Bohrachse 32 bewegt wird. Über einen Verstellmechanismus kann der Andruck der Transportrollen 23a, 23b gelöst und auch wieder aufgebracht werden, so dass trotz angebauter Gestänge-Schubeinrichtung 9 gewisse Funktionen an der Bohrvorrichtung 1 gefahren werden können, wie zum Beispiel das Drehen des Bohrstrangs mit Hilfe eines Spannkopfes sowie das Ver- und Endschrauben der Gewindeverbindungen mit Hilfe eines Spannkopfes. Die Gestänge-Schubeinrichtung 9 ist so konzipiert, dass sie an vorhandenen Bohrvorrichtungen 1 im Bereich des Führungsrahmens 3 adaptiert werden kann.The rod pushing device 9 is designed such that the drill string is always moved in the center of the drilling axis 32. The pressure of the transport rollers 23a, 23b can be released and reapplied via an adjustment mechanism, so that certain functions can be performed on the drilling device 1 despite the attached rod pusher device 9, such as rotating the drill string with the aid of a clamping head and the Ver - and end screws of the threaded connections with the help of a clamping head. The rod pushing device 9 is designed so that it can be adapted to existing drilling devices 1 in the area of the guide frame 3.

Die beschriebene Erfindung ist selbstverständlich nicht auf die beschriebene und dargestellte Ausführungsform beschränkt. An der in der Zeichnung dargestellten Ausführungsform können zahlreiche, dem Fachmann entsprechend der beabsichtigten Anwendung naheliegende Abänderungen vorgenommen werden, ohne dass dadurch der Bereich der Erfindung verlassen wird. Es versteht sich, dass die Gestänge-Schubeinrichtung 9 auch mehrere Paare von Transportrollen und/oder mehrere Paare von Führungsrollen aufweisen kann, auch wenn in dem in den Figuren dargestellten Ausführungsbeispiel nur ein Paar von Transportrollen 23a, 23b und von Führungsrollen 26a, 26b gezeigt ist. Zur Erfindung gehört alles dasjenige, was in der Beschreibung enthalten und/oder in der Zeichnung dargestellt ist, einschließlich dessen, was abweichend von dem konkreten Ausführungsbeispiel für den Fachmann naheliegt.The invention described is of course not limited to the embodiment described and illustrated. Numerous modifications, which are obvious to a person skilled in the art according to the intended application, can be made to the embodiment shown in the drawing without thereby departing from the scope of the invention. It goes without saying that the linkage pushing device 9 can also have several pairs of transport rollers and / or several pairs of guide rollers, even if only one pair of transport rollers 23a, 23b and guide rollers 26a, 26b is shown in the exemplary embodiment shown in the figures . The invention includes everything that is contained in the description and / or shown in the drawing, including that which deviates from the specific exemplary embodiment and is obvious to the person skilled in the art.

Claims (12)

  1. A drilling device (1), having: a guide frame (3); a guide table (4) which is mounted on the guide frame (3) such that it can move in a longitudinal direction (5) of the guide frame (3); and a drilling drive (6) which is fastened on the guide table (4) and comprises a motor-driven chuck head for the rotary driving of a drill rod (2), and a rod bushing (19) which allows a drill rod (2) released from the chuck head to be pulled through the drilling drive (6),
    characterised in that
    a rod-pushing apparatus (9) is fastened to the guide frame (3) and can be connected frictionally to the drill rod (2) and is designed to move the drill rod (2) in the longitudinal direction (5) of the guide frame (3).
  2. The drilling device (1) according to Claim 1, characterised in that the rod-pushing apparatus (9) has at least one drive motor (22a, 22b) and at least one pair of transport rollers (23a, 23b), of which at least one transport roller (23a, 23b) is drive-connected to the at least one drive motor (22a, 22b), wherein at least one transport roller (23a, 23b) of the at least one pair of transport rollers (23a, 23b) is mounted such that it can move towards the other transport roller (23a, 23b) of the at least one pair of transport rollers (23a, 23b) or such that it can move away from the other transport roller (23a, 23b) of the at least one pair of transport rollers (23a, 23b), wherein the at least one pair of transport rollers (23a, 23b) is designed to clamp the drill rod (2) frictionally between them or to release it.
  3. The drilling device (1) according to Claim 2, characterised in that the rod-pushing apparatus (9) has at least one pressure bracket (24a, 24b) which is movable transversely to the longitudinal direction (5) of the guide frame (3) and on which a transport roller (23a, 23b) of the at least one pair of transport rollers (23a, 23b) is rotatably mounted.
  4. The drilling device (1) according to Claim 3, characterised in that the rod-pushing apparatus (9) has at least one pair of guide rollers (26a, 26b), wherein at least one guide roller (26a, 26b) of the at least one pair of guide rollers (26a, 26b) is mounted such that it can move towards the other guide roller (26a, 26b) of the at least one pair of guide rollers (26a, 26b) or such that it can move away from the other guide roller (26a, 26b) of the at least one pair of guide rollers (26a, 26b), wherein the at least one pair of guide rollers (26a, 26b) is designed to guide the drill rod (2) between them.
  5. The drilling device (1) according to Claim 4, characterised in that the rod-pushing apparatus (9) has at least one pressure piece (27a, 27b) which is movable transversely to the longitudinal direction (5) of the guide frame (3) and on which a guide roller (26a, 26b) of the at least one pair of guide rollers (26a, 26b) is rotatably mounted.
  6. The drilling device (1) according to Claim 5, characterised in that the rod-pushing apparatus (9) has at least one mechanical pressure element (28a, 28b), which exerts a pressure force which displaces the at least one pressure piece (27a, 27b) transversely to the longitudinal direction (5) of the guide frame (3) and moves the guide rollers (26a, 26b) towards each other.
  7. The drilling device (1) according to Claim 6, characterised in that the at least one pressure bracket (24a, 24b) has a driver (29a, 29b) which bears against a coupling shoulder (30a, 30b) formed on the at least one pressure piece (27a, 27b) such that the driver (29a, 29b) is designed to move the guide rollers (26a, 26b) away from each other counter to the pressure force of the at least one mechanical pressure element (28a, 28b) to release the drill rod (2) when the transport rollers (23a, 23b) are moved away from each other.
  8. The drilling device (1) according to Claim 5, characterised in that the rod-pushing apparatus (9) has a spacer (31) which is situated between the at least one pair of guide rollers (26a, 26b) and parallel to a drilling axis (32) of the drill rod (2) and blocks movement of the at least one pressure piece (27a, 27b) beyond the drilling axis (32).
  9. The drilling device (1) according to Claim 1, characterised in that a rod-retaining device (7) with a clamping device (17) is fastened to the guide frame (3), wherein the drill rod (2) can be clamped with the aid of the clamping device (17).
  10. The drilling device (1) according to Claim 9, characterised in that the drilling drive (6) is situated between the rod-retaining device (7) and the rod-pushing apparatus (9).
  11. The drilling device (1) according to Claim 10, characterised in that a rod-breaking apparatus (8) is situated between the rod-retaining device (7) and the drilling drive (6).
  12. The drilling device (1) according to Claim 1, characterised in that the chuck head is in the form of a hollow spindle.
EP18185397.9A 2018-07-25 2018-07-25 Drilling device Active EP3599340B1 (en)

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CN113089639B (en) * 2021-04-21 2022-03-18 郑州工业应用技术学院 Foundation ditch subassembly that stabilizes for civil engineering
CN113565453A (en) * 2021-08-13 2021-10-29 王超 Resistance induction drill rod pushing device

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Publication number Priority date Publication date Assignee Title
EP2093373A1 (en) * 2008-02-21 2009-08-26 Klemm Bohrtechnik GmbH Drilling device, in particular for producing blast holes in the bed of a body of water and method for inserting an explosive charge into the bed of a body of water

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DE4038424C1 (en) * 1990-12-01 1992-04-09 Ing. Guenter Klemm Bohrtechnik Gmbh, 5962 Drolshagen, De Kelly borehole drilling arrangement - involves telescopically nested pipes connected to drill head
EP2505762B1 (en) * 2011-03-30 2018-02-14 ABS Trenchless, Zweigniederlassung der Klemm Bohrtechnik GmbH Drilling device and method for horizontal drilling
DE102012010199B4 (en) * 2012-05-16 2014-07-31 Klemm Bohrtechnik Gmbh Method and device for creating a borehole
CL2017001229A1 (en) * 2016-05-13 2018-08-10 Dr Fabrication Inc A bar positioning device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093373A1 (en) * 2008-02-21 2009-08-26 Klemm Bohrtechnik GmbH Drilling device, in particular for producing blast holes in the bed of a body of water and method for inserting an explosive charge into the bed of a body of water

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