EP0190669A2 - Drilling apparatus - Google Patents

Drilling apparatus Download PDF

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Publication number
EP0190669A2
EP0190669A2 EP86101230A EP86101230A EP0190669A2 EP 0190669 A2 EP0190669 A2 EP 0190669A2 EP 86101230 A EP86101230 A EP 86101230A EP 86101230 A EP86101230 A EP 86101230A EP 0190669 A2 EP0190669 A2 EP 0190669A2
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EP
European Patent Office
Prior art keywords
rotary
rotary drive
drive
pipe section
linkage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86101230A
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German (de)
French (fr)
Other versions
EP0190669A3 (en
EP0190669B1 (en
Inventor
Günter W. Klemm
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.)
Ing G Klemm Bohrtechnik GmbH
Original Assignee
Ing G Klemm Bohrtechnik GmbH
ING GUNTER KLEMM SPEZIALUNTERNEHMEN fur BOHRTECHNIK
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Application filed by Ing G Klemm Bohrtechnik GmbH, ING GUNTER KLEMM SPEZIALUNTERNEHMEN fur BOHRTECHNIK filed Critical Ing G Klemm Bohrtechnik GmbH
Priority to AT86101230T priority Critical patent/ATE48176T1/en
Publication of EP0190669A2 publication Critical patent/EP0190669A2/en
Publication of EP0190669A3 publication Critical patent/EP0190669A3/en
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Publication of EP0190669B1 publication Critical patent/EP0190669B1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
    • 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes

Definitions

  • the invention relates to a drilling device with a tubular outer rod carrying a ring drill bit, an inner rod running in the outer rod, a central inner bit bearing inner rod, a common feed device for both rods in the form of a carriage which can be moved in the longitudinal direction of the rod and which has a rotary drive for the outer rod and a rotary percussion drive for the inner linkage, and with an adjusting device for changing the mutual distance between rotary impact drive and rotary drive on the slide.
  • a known drilling device of this type (DE-OS 29 24 393) is provided with a rotary drive for the outer linkage.
  • the inner rod extends through the rotary drive.
  • a rotary impact drive is attached to the slide in axial alignment with the rotary drive. While the inner rod is being rotated and struck, the outside becomes boom only rotated.
  • the rotation suppression g drive can be adjusted relative to the rotary drive in the axial direction of the rod to change in the borehole, the axial position of the centric réellebohrkrone with respect to the ring bit.
  • it is possible to extend the inner drill bit operate both drill bits at the same height, or pull the inner drill bit back to seal the outer rod against water or quicksand. In any case, the outer linkage is only rotated while the inner linkage is rotated and struck.
  • a drilling device requires only a single rotary drive for both rods.
  • the inner linkage and the outer linkage cannot be adjusted relative to one another, so that the two drill bits are always in a fixed axial relationship to one another.
  • the outer rod Since the outer rod is subjected to blows that are transmitted to the borehole wall, the soil near the borehole wall is compacted. The compacted soil tightly surrounds the outer boom and prevents the two booms from rotating together.
  • the directional accuracy suffers from hitting the outer linkage.
  • the pipes of the outer linkage are subject to high wear due to the constant impact.
  • drilling devices are known in which an eccentric drill bit is attached to the front end of the inner rod, which is rotated and struck while the outer rod is only rotated.
  • the eccentric drill bit drills a hole that is larger than the inner diameter of the outer rod, so that the outer rod can be easily pushed under rotation.
  • eccentric drill bits When using eccentric drill bits, the directional accuracy of the drilling is poor.
  • a drilling device For drilling in earthy soils, a drilling device with a central inner core bit that is turned and struck and with a ring core bit that is only turned is particularly suitable.
  • the rotating (not beaten) outer rod does not cause soil compaction and the impacts on the inner rod are transmitted to the inner drill bit through the surrounding soil without damping. If you encounter rock temporarily during such drilling work, the inner core bit works its way through this rock, but the ring core bit, which is only rotated, cannot follow. For this reason, in the event of such difficulties, at least part of the drilling equipment must be replaced in order to overcome the difficult section of the borehole. This requires a considerable amount of material, which must be kept at the drilling site, in terms of time and assembly work.
  • the invention has for its object to provide a drilling device of the type mentioned can work in different operating modes in different soil conditions with high propulsive power without having to replace parts of the drilling device.
  • a pipe section passing through the rotary drive is attached to the rear end of the outer linkage, the end of which lies behind the rotary drive, and that the inner linkage has a radially projecting ring collar in the area between the rotary drive and rotary impact drive, the front of which Front side can be attached by the adjusting device against the end of the pipe section.
  • the drilling device according to the invention is used in light soils in such a way that the outer rod is only rotated and the inner rod is rotated and struck. This results in the greatest possible drilling with high directional accuracy of the drilling.
  • the blows of the inner drill bit not only cause the axial expansion of the drill hole, but they also radially radiate into the area covered by the ring drill bit, so that the material in front of the exclusively rotating ring drill bit is partially loosened and the ring drill bit can then easily remove this material . If one encounters rocky ground at the bottom, the inner tube is advanced relative to the outer tube until the ring collar of the inner tube abuts against the pipe section which forms the rear end of the outer tube.
  • the drilling device according to the invention can optionally be used in two operating modes by simply axially displacing the two rods relative to one another, the outer rod being struck only when the ground conditions so require.
  • Front generally refers to the direction facing the bottom of the borehole, ie the direction of drilling, while “rear” denotes the opposite direction.
  • the end of the pipe section and the end face of the ring collar can have flat surfaces which can be placed against one another. As a result, the impact energy that is transmitted from the inner linkage to the outer linkage is distributed over a relatively large transmission area.
  • the end of the pipe section and the end face of the ring collar have interlocking toothings for the rotationally fixed coupling of the outer linkage and inner linkage.
  • the ring works here collar and the pipe section not only as impact transmission elements, but also for the rotationally fixed coupling of both rods.
  • the rotary drive of the inner linkage supports the rotary drive of the outer linkage. While the outer rod rubs against the borehole wall and has to overcome a high rotational resistance, the performance of the rotary drive of the inner rod is generally not fully utilized.
  • the support of the rotary drive of the external linkage acts by those of the internal linkage advantageous.
  • the pipe section of the outer linkage should be mounted in a longitudinally displaceable manner in the corresponding rotary drive, so that blows which are exerted on the pipe section via the ring collar do not act on the rotary drive. Adequate clearance must therefore be provided so that the pipe section can dodge axially with every impact.
  • a spring device should be attached to this housing in order to cushion axial movements of the pipe section relative to the housing of the rotary drive.
  • the drilling device according to the invention can also be used so that the percussion drive of the inner rod is switched off, so that both rods are only rotated. This method of working will be used, for example, on sandy soils. Finally, it is also possible to make the rotary part of the rotary impact drive reversible for the inner linkage, so that the inner linkage can be rotated in the same direction or in the opposite direction to the outer linkage.
  • the inner rod 11 runs in the tubular outer rod 10, which is preferably also tubular.
  • Each of these rods consists of numerous pipes, the ends of which are either screwed directly to one another or connected to one another by means of sleeves.
  • the rear end of the outer linkage 10 is connected to a pipe section 12 which projects axially through the rotary drive 13.
  • the rotary drive 13 has a rotary motor 14 which drives a gear 15 via a gear.
  • the gear wheel 15 is supported with radial bearings 16 and axial bearings 17 in a housing 18 which surrounds the pipe section 12.
  • the gear 12 leads coaxially through the gear 15.
  • the pipe section 12 has radially projecting teeth 19 which fit into keyways 20 on the inside of the gear wheel 15, so that the gear wheel 15 is connected to the pipe section 12 in a rotationally fixed manner.
  • the splines 20 have a greater length than the teeth 19, so that there is a free space 21 in front of each spline tooth 19 and the pipe section 12 can be moved axially inside the gear 15.
  • the space in which the teeth 19 can move axially is limited laterally by two rings 22, 23 which surround the tube piece 12.
  • the front ring 23 rests on a support ring 24 which is accommodated in a cover 25 screwed onto the housing 18.
  • This cover 25 contains a spring device 26 made of several plate springs.
  • the rear end 27 of the tube piece 12 protruding from the housing 18 is designed as a radial impact transmission surface.
  • the rotary impact drive 28 is arranged, which is a hydraulic Impact device 29 and a rotary motor 30.
  • the striking device 29 strikes a rod 31 which is rotated by the rotary motor 30 via a gear 32.
  • the rod 31 protrudes axially through the gear 32 and the striker 29 strikes the rear end of this rod.
  • the front end of the rod 31 is connected to the rear rod 34 of the inner rod 11 via a sleeve 33.
  • This rod 34 is provided with a radially projecting ring collar 35, the end face 36 of which faces the end 27 of the pipe section 12.
  • the rotary drive 13 and the rotary impact drive 28 are mounted on a carriage 37 which can be moved along a guide 38 in the longitudinal direction of the linkages 10 and 11.
  • a feed device (not shown) drives the carriage 37 towards the borehole.
  • the rotary drive 13 is fixedly attached to the carriage 37.
  • the rotary impact drive 28, however, is displaceable in the longitudinal direction of the slide. This displacement takes place by means of an adjusting device 39, one end of which is attached to the slide 37 and the other end of which is connected to the rotary impact drive 2.8.
  • the actuator 39 is a piston-cylinder unit that can be operated to change the axial distance between the rotating device 13 and the rotary impact device 28.
  • the rotary impact device 28 is moved to the rotary drive 13 by actuating the adjusting device 39, so that the end face 36 is pressed firmly against the end 27. In this state, the strikes of the striking device 29 are transmitted from the inner linkage to the outer linkage. However, both linkages rotate independently of one another.
  • FIGS. 2 and 3 differs from that of Figure 1 only in that the end 27 'of the pipe section 15 and the end face 36' of the ring collar 35 are not flat, but have interlocking teeth 35 which have a rotationally fixed coupling between the rod 34 and the Pipe piece 35 cause when they are pressed axially against each other.
  • the rotary drive 13 is thus supported by the rotary motor 30 of the inner linkage. This results in a more even load distribution between the rotary drives.
  • Fig. 4 shows the state of the drill bits in which in the Figs. 1 and 2 shown mode of operation, are decoupled from each other in the inner linkage and outer linkage.
  • a ring drill bit 42 is fastened, in which the central inner drill bit 43 connected to the inner rod 11 is guided in a longitudinally displaceable manner. Flushing liquid is pumped through the channel 44 of the hollow inner rod 11 to the bottom of the borehole. The flushing liquid exits through the inner drill bit 43 and drives the drill material through lateral grooves of the inner drill bit into the space between the inner rod 11 and outer rod 10.
  • the diameter of the inner drill bit 43 is adapted to the inner diameter of the ring drill bit 42, so that the inner drill bit is centered in the ring drill bit.
  • the retebohrkrone 43 is retracted with respect to the ring bit 42nd
  • Both drill bits can also be arranged with their cutting elements in one plane. It is also possible to let the inner drill bit advance in relation to the ring drill bit without an impact coupling occurring.
  • Fig. 5 shows the state that the drill bits assume when the inner rod 11 is advanced so far that the annular shoulder 35 abuts the pipe section 12.
  • the inner drill bit 43 protrudes from the ring drill bit 42, but is still guided centrally by the latter.
  • the inner drill bit 43 strikes the borehole bottom 45 and works a relatively large area.
  • the ring core bit only has to machine that part of the bottom of the borehole that has not been covered by the inner core bit 43. The blows of the inner core bit already loosen part of the material lying in the area of the ring core bit.

Abstract

1. Drilling device having a tubular outer rod means (10) carrying an annular bore-crown (42), an inner rod means (11) extending in the outer rod means (10) and carrying an inner bore-crown (43), a common advance device for both rod means, being arranged as a slide (37) movable in longitudinal direction of both rod means and carrying a rotary drive (13) for the outer rod means (10) and a rotary percussion drive (28) for the inner rod means (11), and an adjusting device (39) for varying the mutual distance between the rotary percussion drive (28) and the rotary drive (13) on the slide (37), characterized in that a tube portion (12), extending through the rotary drive (13), is fastened to the rear end of the outer rod means (10), the end (27) of said tube portion (12) being arranged behind the rotary drive (13), and in that the inner rod means (11), in the area between the rotary drive (13) and the rotary percussion drive (28), is provided with a radially projecting annular collar (35), the front end face (36) of said annular collar (35) being adapted to be set against the end (27) of the tube portion (12) by the adjusting device (39).

Description

Die Erfindung betrifft eine Bohrvorrichtung mit einem eine Ringbohrkrone tragenden rohrförmigen Außengestänge, einem in dem Außengestänge verlaufenden, eine zentrische Innenbohrkrone tragenden Innengestänge, einer gemeinsamen Vorschubvorrichtung für beide Gestänge in Form eines in Längsrichtung der Gestänge verfahrbaren Schlittens, der einen Drehantrieb für das Außengestänge und einen Drehschlagahtrieb für das Innengestänge trägt,und mit einer Stellvorrichtung zum Verändern des gegenseitigen Abstandes zwischen Drehschlagantrieb und Drehantrieb auf dem Schlitten.The invention relates to a drilling device with a tubular outer rod carrying a ring drill bit, an inner rod running in the outer rod, a central inner bit bearing inner rod, a common feed device for both rods in the form of a carriage which can be moved in the longitudinal direction of the rod and which has a rotary drive for the outer rod and a rotary percussion drive for the inner linkage, and with an adjusting device for changing the mutual distance between rotary impact drive and rotary drive on the slide.

Eine bekannte Bohrvorrichtung dieser Art (DE-OS 29 24 393) ist mit einem Drehantrieb für das Außengestänge versehen. Durch den Drehantrieb ragt das Innengestänge hindurch. Am rückwärtigen Ende des Innengestänges ist in axialer Ausrichtung mit dem Drehantrieb ein Drehschlagantrieb auf dem Schlitten angebracht. Während das Innengestänge gedreht und geschlagen wird, wird das Außengestänge ausschließlich gedreht. Der Drehschlagantrieb kann relativ zu dem Drehantrieb in Achsrichtung der Gestänge verstellt werden, um im Bohrloch die axiale Position der zentrischen Innenbohrkrone in Bezug auf die Ringbohrkrone zu verändern. In Abhängigkeit von den jeweiligen Bodenverhältnissen ist es möglich, die Innenbohrkrone auszufahren, beide Bohrkronen auf gleicher Höhe zu betreiben oder die Innenbohrkrone zurückzuziehen, um das Außengestänge gegen eindringendes Wasser oder Treibsand abzudichten. In jedem Fall wird das Außengestänge ausschließlich gedreht, während das Innengestänge gedreht und geschlagen wird.A known drilling device of this type (DE-OS 29 24 393) is provided with a rotary drive for the outer linkage. The inner rod extends through the rotary drive. At the rear end of the inner linkage, a rotary impact drive is attached to the slide in axial alignment with the rotary drive. While the inner rod is being rotated and struck, the outside becomes boom only rotated. The rotation suppression g drive can be adjusted relative to the rotary drive in the axial direction of the rod to change in the borehole, the axial position of the centric Innenbohrkrone with respect to the ring bit. Depending on the soil conditions, it is possible to extend the inner drill bit, operate both drill bits at the same height, or pull the inner drill bit back to seal the outer rod against water or quicksand. In any case, the outer linkage is only rotated while the inner linkage is rotated and struck.

Bekannt ist ferner eine Bohrvorrichtung-, bei der.Innengestänge und Außengestänge am rückwärtigen Ende durch ein gemeinsames Kopfstück miteinander verbunden sind (DE-PS 11 76 079). Eine derartige Bohrvorrichtung benötigt nur einen einzigen Drehschlagantrieb für beide Gestänge. Nachteilig ist allerdings, daß Innengestänge und Außengestänge nicht relativ zueinander verstellt werden können, so daß die beiden Bohrkronen stets in fester axialer Zuordnung zueinander stehen. Da das Außengestänge mit Schlägen beaufschlagt wird, die sich auf die Bohrlochwand übertragen, wird der Boden in der Nähe der Bohrlochwand verdichtet. Der verdichtete Boden umschließt das Außengestänge eng und behindert das gemeinsame Drehen beider Gestänge. Außerdem leidet durch das Schlagen des Außengestänges die Richtungsgenauigkeit. Die Rohre des Außengestänges sind durch die ständige Schlagbeaufschlagung einem hohen Verschleiß unterworfen.Also known is a drilling device in which inner rods and outer rods are connected to one another at the rear end by a common head piece (DE-PS 11 76 079). Such a drilling device requires only a single rotary drive for both rods. However, it is disadvantageous that the inner linkage and the outer linkage cannot be adjusted relative to one another, so that the two drill bits are always in a fixed axial relationship to one another. Since the outer rod is subjected to blows that are transmitted to the borehole wall, the soil near the borehole wall is compacted. The compacted soil tightly surrounds the outer boom and prevents the two booms from rotating together. In addition, the directional accuracy suffers from hitting the outer linkage. The pipes of the outer linkage are subject to high wear due to the constant impact.

Schließlich sind Bohrvorrichtungen bekannt, bei denen am vorderen Ende des Innengestänges eine Exzenterbohrkrone befestigt ist, die gedreht und geschlagen wird, während das Außengestänge ausschließlich gedreht wird. Die Exzenterbohrkrone bohrt ein Loch, das größer ist als der Innendurchmesser des Außengestänges, so daß das Außengestänge unter Drehung leicht nachgeschoben werden kann. Bei Verwendung von Exzenterbohrkronen ist die Richtungsgenauigkeit des Bohrens schlecht.Finally, drilling devices are known in which an eccentric drill bit is attached to the front end of the inner rod, which is rotated and struck while the outer rod is only rotated. The eccentric drill bit drills a hole that is larger than the inner diameter of the outer rod, so that the outer rod can be easily pushed under rotation. When using eccentric drill bits, the directional accuracy of the drilling is poor.

Für das Bohren in erdigen Böden eignet sich besonders eine Bohrvorrichtung mit zentrischer Innenbohrkrone, die gedreht und geschlagen wird,und mit einer Ringbohrkrone, die ausschließlich gedreht wird. Das drehende (nicht geschlagene) Außengestänge bewirkt keine Bodenverdichtung und die auf das Innengestänge ausgeübten Schläge werden ohne Dämpfung durch den umgebenden Boden auf die Innenbohrkrone übertragen. Wenn man bei solchen Bohrarbeiten aber vorübergehend auf Fels trifft, arbeitet sich zwar die Innenbohrkrone durch diesen Fels durch, jedoch kann die Ringbohrkrone, die lediglich gedreht wird, nicht nachfolgen. Aus diesem Grunde muß bei derartigen Schwierigkeiten mindestens ein Teil der Bohrausrüstung ausgewechselt werden, um den schwierigen Abschnitt des Bohrlochs überwinden zu können. Dies erfordert einen erheblichen Aufwand an Material, das an der Bohrstelle bereitgehalten werden muß, an Zeit und an Montagearbeit.For drilling in earthy soils, a drilling device with a central inner core bit that is turned and struck and with a ring core bit that is only turned is particularly suitable. The rotating (not beaten) outer rod does not cause soil compaction and the impacts on the inner rod are transmitted to the inner drill bit through the surrounding soil without damping. If you encounter rock temporarily during such drilling work, the inner core bit works its way through this rock, but the ring core bit, which is only rotated, cannot follow. For this reason, in the event of such difficulties, at least part of the drilling equipment must be replaced in order to overcome the difficult section of the borehole. This requires a considerable amount of material, which must be kept at the drilling site, in terms of time and assembly work.

Der Erfindung liegt die Aufgabe zugrunde, eine Bohrvorrichtung der eingangs genannten Art zu schaffen, die bei unterschiedlichen Bodenverhältnissen mit hoher Vortriebsleistung in verschiedenen Betriebsweisen arbeiten kann, ohne daß Teile der Bohrvorrichtung ausgewechselt werden müßten.The invention has for its object to provide a drilling device of the type mentioned can work in different operating modes in different soil conditions with high propulsive power without having to replace parts of the drilling device.

Die Lösung dieser Aufgabe besteht erfindungsgemäß darin, daß an dem rückwärtigen Ende des Außengestänges ein durch den Drehantrieb hindurchgehendes Rohrstück befestigt ist, dessen Ende hinter dem Drehantrieb liegt, und daß das Innengestänge in dem Bereich zwischen Drehantrieb und Drehschlagantrieb einen radial abstehenden Ringkragen aufweist, dessen vordere Stirnseite durch die Stellvorrichtung gegen das Ende des Rohrstücks ansetzbar ist.The solution to this problem is, according to the invention, that a pipe section passing through the rotary drive is attached to the rear end of the outer linkage, the end of which lies behind the rotary drive, and that the inner linkage has a radially projecting ring collar in the area between the rotary drive and rotary impact drive, the front of which Front side can be attached by the adjusting device against the end of the pipe section.

Die erfindungsgemäße Bohrvorrichtung wird in leichten Böden so eingesetzt, daß das Außengestänge auschließlich gedreht und das Innengestänge gedreht und geschlagen wird. Hierbei ergibt sich der größtmögliche Bohrvortrieb bei hoher Richtungsgenauigkeit des Bohrens. Die Schläge der Innenbohrkrone bewirken nicht nur die axiale Ausdehnung des Bohrlochs, sondern sie haben auch eine radiale Ausstrahlung in den von der Ringbohrkrone erfaßten Bereich hinein, so daß das Material vor der ausschließlich drehenden Ringbohrkrone teilweise gelockert wird und die Ringbohrkrone dieses Material dann leicht abtragen kann. Trifft man beim Boden auf felsigen Grund, dann wird das Innenrohr relativ zu dem Außenrohr vorgeschoben, bis der Ringkragen des Innenrohres bis gegen das Rohrstück stößt, welches das rückwärtige Ende des Außenrohres bildet. über den Ringkragen werden die Schläge des Innenrohres auf das Außenrohr übertragen, so daß nunmehr auch das Außenrohr geschlagen werden kann. Da nunmehr auch die Ringbohrkrone schlägt, wirken Schläge auf den gesamten Querschnitt der Bohrlochsohle ein. Diese Betriebsweise wird jedoch nur solange beibehalten, bis die Felsschicht zertrümmert ist. Wenn dies der Fall ist, kann das Innenrohr wieder zurückgezogen werden, so daß die Schlagkopplung beider Gestänge aufgehoben wird.The drilling device according to the invention is used in light soils in such a way that the outer rod is only rotated and the inner rod is rotated and struck. This results in the greatest possible drilling with high directional accuracy of the drilling. The blows of the inner drill bit not only cause the axial expansion of the drill hole, but they also radially radiate into the area covered by the ring drill bit, so that the material in front of the exclusively rotating ring drill bit is partially loosened and the ring drill bit can then easily remove this material . If one encounters rocky ground at the bottom, the inner tube is advanced relative to the outer tube until the ring collar of the inner tube abuts against the pipe section which forms the rear end of the outer tube. The blows of the inner tube are transmitted to the outer tube via the ring collar, so that the outer tube can now be struck. Since the ring core bit is now striking, impacts affect the entire cross-section of the bottom of the borehole. However, this mode of operation is only maintained until the rock layer is broken up. If this is the case, the inner tube can be pulled back again so that the percussion coupling of both rods is released.

Die erfindungsgemäße Bohrvorrichtung kann durch einfaches axiales Verschieben der beiden Gestänge relativ zueinander wahlweise in zwei Betriebsarten benutzt werden, wobei das Außengestänge nur dann geschlagen wird, wenn die Bodenverhältnisse dies erfordern.The drilling device according to the invention can optionally be used in two operating modes by simply axially displacing the two rods relative to one another, the outer rod being struck only when the ground conditions so require.

Mit "vorne" wird hier generell die der Bohrlochsohle zugewandte Richtung, also die Bohrrichtung, bezeichnet, während "hinten" die Gegenrichtung bezeichnet."Front" generally refers to the direction facing the bottom of the borehole, ie the direction of drilling, while "rear" denotes the opposite direction.

Das Ende des Rohrstücks und die Stirnseite des Ringkragens können ebene Flächen aufweisen, die gegeneinandersetzbar sind. Hierdurch wird die Schlagenergie, die von dem Innengestänge auf das Außengestänge übertragen wird, auf eine relativ große Übertragungsfläche verteilt.The end of the pipe section and the end face of the ring collar can have flat surfaces which can be placed against one another. As a result, the impact energy that is transmitted from the inner linkage to the outer linkage is distributed over a relatively large transmission area.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß das Ende des Rohrstücks und die Stirnseite des Ringkragens ineinandergreifende Verzahnungen zur drehfesten Kopplung von Außengestänge und Innengestänge aufweisen. Hierbei wirken der Ringkragen und das Rohrstück nicht nur als Schlagübertragungselemente, sondern auch zur drehfesten Kopplung beider Gestänge. Dies bedeutet, daß der Drehantrieb des Innengestänges den Drehantrieb des Außengestänges unterstützt. Während das Außengestänge an der Bohrlochwand reibt und einen hohen Drehwiderstand überwinden muß, wird die Leistungsfähigkeit des Drehantriebs des Innengestänges in der Regel nicht voll ausgenutzt. Gerade dann, wenn das Außenrohrgestänge geschlagen wird und eine Bodenverdichtung an der Bohrlochwand auftritt, wirkt sich die Unterstützung des Drehantriebs des Außengestänges durch denjenigen des Innengestänges vorteilhaft aus.According to a preferred embodiment of the invention, it is provided that the end of the pipe section and the end face of the ring collar have interlocking toothings for the rotationally fixed coupling of the outer linkage and inner linkage. The ring works here collar and the pipe section not only as impact transmission elements, but also for the rotationally fixed coupling of both rods. This means that the rotary drive of the inner linkage supports the rotary drive of the outer linkage. While the outer rod rubs against the borehole wall and has to overcome a high rotational resistance, the performance of the rotary drive of the inner rod is generally not fully utilized. Especially when the outer tube g estänge is beaten and soil compaction on the borehole wall occurs, the support of the rotary drive of the external linkage acts by those of the internal linkage advantageous.

Das Rohrstück des Außengestänges sollte längsverschiebbar in dem entsprechenden Drehantrieb gelagert sein, damit Schläge, die über den Ringkragen auf das Rohrstück ausgeübt werden, nicht auf den Drehantrieb wirken. Es muß daher ein ausreichender Freiraum vorgesehen sein, damit das Rohrstück bei jedem Schlag axial ausweichen kann. Zusätzlich sollte zur Abfederung von Axialbewegungen des Rohrstücks relativ zu dem Gehäuse des Drehantriebs an diesem Gehäuse eine Federvorrichtung angebracht sein.The pipe section of the outer linkage should be mounted in a longitudinally displaceable manner in the corresponding rotary drive, so that blows which are exerted on the pipe section via the ring collar do not act on the rotary drive. Adequate clearance must therefore be provided so that the pipe section can dodge axially with every impact. In addition, a spring device should be attached to this housing in order to cushion axial movements of the pipe section relative to the housing of the rotary drive.

Die erfindungsgemäße Bohrvorrichtung kann ferner so benutzt werden, daß der Schlagantrieb des Innengestänges abgeschaltet wird, so daß beide Gestänge ausschließlich gedreht werden. Diese Arbeitsweise wird man z.B. bei sandigen Böden anwenden. Schließlich ist es auch möglich, den Drehteil des Drehschlagantriebs für das Innengestänge reversierbar zu machen, so daß das Innengestänge gleichläufig oder gegenläufig zum Außengestänge gedreht werden kann. Im folgenden wird unter Bezugnahme auf die Zeichnungen ein Ausführungsbeispiel der Erfindung näher erläutert.The drilling device according to the invention can also be used so that the percussion drive of the inner rod is switched off, so that both rods are only rotated. This method of working will be used, for example, on sandy soils. Finally, it is also possible to make the rotary part of the rotary impact drive reversible for the inner linkage, so that the inner linkage can be rotated in the same direction or in the opposite direction to the outer linkage. In the following an embodiment of the invention will be explained with reference to the drawings.

Es zeigen:

  • Fig. 1 eine Seitenansicht der Antriebseinrichtung bei einer ersten Ausführungsform der Bohrvorrichtung,
  • Fig. 2 einen Ausschnitt aus Fig. 1, jedoch bei einer modifizierten Ausführungsform,
  • Fig. 3 einen Schnitt entlang der Linie III-III von Fig. 2,
  • Fig. 4 die gegenseitige Zuordnung der beiden Bohrkronen bei ausschließlich drehendem Außengestänge und
  • Fig. 5 die gegenseitige Zuordnung der beiden Bohrkronen, wenn Innengestänge und Außengestänge beide gedreht und geschlagen werden.
Show it:
  • 1 is a side view of the drive device in a first embodiment of the drilling device,
  • FIG. 2 shows a detail from FIG. 1, but in a modified embodiment,
  • 3 shows a section along the line III-III of FIG. 2,
  • Fig. 4 shows the mutual assignment of the two drill bits with only rotating outer rod and
  • Fig. 5 shows the mutual assignment of the two drill bits when the inner rods and outer rods are both rotated and struck.

Bei der dargestellten Bohrvorrichtung verläuft in dem rohrförmigen Außengestänge 10 das Innengestänge 11, das vorzugsweise ebenfalls rohrförmig ist. Jedes dieser Gestänge besteht aus zahlreichen Rohren, deren Enden entweder direkt miteinander verschraubt oder durch Muffen miteinander verbunden sind. Das rückwärtige Ende des Außengestänges 10 ist mit einem Rohrstück 12 verbunden, das durch den Drehantrieb 13 axial hindurchragt.In the illustrated drilling device, the inner rod 11 runs in the tubular outer rod 10, which is preferably also tubular. Each of these rods consists of numerous pipes, the ends of which are either screwed directly to one another or connected to one another by means of sleeves. The rear end of the outer linkage 10 is connected to a pipe section 12 which projects axially through the rotary drive 13.

Der Drehantrieb 13 weist einen Drehmotor 14 auf, der über ein Getriebe ein Zahnrad 15 antreibt. Das Zahnrad 15 ist mit Radiallagern 16 und Axiallagern 17 in einem Gehäuse 18 gelagert, welches das Rohrstück 12 umgibt. Das Zahnrad 12 führt koaxial durch das Zahnrad 15 hindurch. Das Rohrstück 12 weist radial abstehende Zähne 19 auf, die in Keilnuten 20 an der Innenseite des Zahnrades 15 hineinpassen, so daß das Zahnrad 15 drehfest mit dem Rohrstück 12 verbunden ist. Die Keilnuten 20 haben eine größere Länge als die Zähne 19, so daß vor jedem Keilzahn 19 ein freier Abstandsraum 21 vorhanden ist und das Rohrstück 12 im Inneren des Zahnrades 15 axial verschoben werden kann. Der Raum, in dem sich die Zähne 19 axial bewegen können, ist seitlich durch zwei Ringe 22, 23 begrenzt, die das Rohrstück 12 umgeben. Der vordere Ring 23 liegt an einem Stützring 24 an, der in einem an dem Gehäuse 18 angeschraubten Deckel 25 untergebracht ist. Dieser Deckel 25 enthält eine Federvorrichtung 26 aus mehreren Tellerfedern. Wenn die Zähne 19 über den Freiraum 21 hinausgestoßen werden und gegen den Ring 23 stoßen, wird dessen Bewegung durch den Stützring 24 und die Federvorrichtung 26 abgefangen, so daß die Stöße nicht auf das Gehäuse 18 übertragen werden.The rotary drive 13 has a rotary motor 14 which drives a gear 15 via a gear. The gear wheel 15 is supported with radial bearings 16 and axial bearings 17 in a housing 18 which surrounds the pipe section 12. The gear 12 leads coaxially through the gear 15. The pipe section 12 has radially projecting teeth 19 which fit into keyways 20 on the inside of the gear wheel 15, so that the gear wheel 15 is connected to the pipe section 12 in a rotationally fixed manner. The splines 20 have a greater length than the teeth 19, so that there is a free space 21 in front of each spline tooth 19 and the pipe section 12 can be moved axially inside the gear 15. The space in which the teeth 19 can move axially is limited laterally by two rings 22, 23 which surround the tube piece 12. The front ring 23 rests on a support ring 24 which is accommodated in a cover 25 screwed onto the housing 18. This cover 25 contains a spring device 26 made of several plate springs. When the teeth 19 are pushed beyond the free space 21 and abut against the ring 23, its movement is intercepted by the support ring 24 and the spring device 26, so that the shocks are not transmitted to the housing 18.

Das aus dem Gehäuse 18 herausragende rückwärtige Ende 27 des Rohrstücks 12 ist als radiale Schlagübertragungsfläche ausgebildet.The rear end 27 of the tube piece 12 protruding from the housing 18 is designed as a radial impact transmission surface.

Mit Abstand hinter dem Drehantrieb 13 ist der Drehschlagantrieb 28 angeordnet, der eine hydraulische Schlagvorrichtung 29 und einen Drehmotor 30 aufweist.At a distance behind the rotary drive 13, the rotary impact drive 28 is arranged, which is a hydraulic Impact device 29 and a rotary motor 30.

Die Schlagvorrichtung 29 übt Schläge auf eine Stange 31 aus, die über ein Getriebe 32 von dem Drehmotor 30 gedreht wird. Die Stange 31 ragt axial durch das Getriebe 32 hindurch und die Schlagvorrichtung 29 schlägt auf das rückwärtige Ende dieser Stange. Das vordere Ende der Stange 31 ist über eine Muffe 33 mit der rückwärtigen Stange 34 des Innengestänges 11 verbunden. Diese Stange 34 ist mit einem radial abstehenden Ringkragen 35 versehen, dessen Stirnseite 36 dem Ende 27 des Rohrstücks 12 zugewandt ist.The striking device 29 strikes a rod 31 which is rotated by the rotary motor 30 via a gear 32. The rod 31 protrudes axially through the gear 32 and the striker 29 strikes the rear end of this rod. The front end of the rod 31 is connected to the rear rod 34 of the inner rod 11 via a sleeve 33. This rod 34 is provided with a radially projecting ring collar 35, the end face 36 of which faces the end 27 of the pipe section 12.

Der Drehantrieb 13 und der Drehschlagantrieb 28 sind auf einem Schlitten 37 angebracht, der entlang einer Führung 38 in Längsrichtung der Gestänge 10 und 11 verfahrbar ist. Eine (nicht dargestellte) Vorschubvorrichtung treibt den Schlitten 37 in Richtung auf das Bohrloch.The rotary drive 13 and the rotary impact drive 28 are mounted on a carriage 37 which can be moved along a guide 38 in the longitudinal direction of the linkages 10 and 11. A feed device (not shown) drives the carriage 37 towards the borehole.

An dem Schlitten 37 ist der Drehantrieb 13 fest angebracht. Der Drehschlagantrieb 28 ist dagegen in Längsrichtung des Schlittens verschiebbar. Diese Verschiebung erfolgt durch eine Stellvorrichtung 39, deren eines Ende an dem Schlitten 37 angebracht ist und deren anderes Ende mit dem Drehschlagantrieb 2.8 verbunden ist. Die Stellvorrichtung 39 ist eine Kolbenzylindereinheit, die betätigt werden kann, um den axialen Abstand zwischen der Drehvorrichtung 13 und der Drehschlagvorrichtung 28 zu verändern.The rotary drive 13 is fixedly attached to the carriage 37. The rotary impact drive 28, however, is displaceable in the longitudinal direction of the slide. This displacement takes place by means of an adjusting device 39, one end of which is attached to the slide 37 and the other end of which is connected to the rotary impact drive 2.8. The actuator 39 is a piston-cylinder unit that can be operated to change the axial distance between the rotating device 13 and the rotary impact device 28.

Bei dem in Fig. 1 dargestellten Zustand befindet sich der Ringkragen 35 im Abstand von dem Ende 27 des Rohrstücks 12. Das Außengestänge 10 wird durch die Drehvorrichtung 13 ausschließlich gedreht, während das Innengestänge 11 durch die Drehschlagvorrichtung 28 gedreht und geschlagen wird.In the example shown in Fig. 1 state, the annular collar 35 spaced from the end 27 of the pipe section 12. The A ußengestänge 10 by the rotating device 13 exclusively rotated, while the inner rod 11 is rotated and struck by the rotary impact device 28.

Wenn es erforderlich ist,auch das Außengestänge 10 zu schlagen, wird die Drehschlagvorrichtung 28 durch Betätigung der Stellvorrichtung 39 an den Drehantrieb 13 herangefahreh, so daß die Stirnseite 36 fest gegen das Ende 27 gedrückt wird. In diesem Zustand werden die Schläge der Schlagvorrichtung 29 von dem Innengestänge auf das Außengestänge übertragen. Beide Gestänge drehen sich jedoch unabhängig voneinander.If it is necessary to also hit the outer linkage 10, the rotary impact device 28 is moved to the rotary drive 13 by actuating the adjusting device 39, so that the end face 36 is pressed firmly against the end 27. In this state, the strikes of the striking device 29 are transmitted from the inner linkage to the outer linkage. However, both linkages rotate independently of one another.

Das Ausführungsbeispiel der Fign. 2 und 3 unterscheidet sich von demjenigen der Fig.1 nur dadurch, daß das Ende 27' des Rohrstücks 15 und die Stirnseite 36' des Ringkragens 35 nicht ebenflächig sind, sondern ineinandergreifende Verzahnungen 35 aufweisen, die eine drehfeste Kopplung zwischen der Stange 34 und dem Rohrstück 35 bewirken, wenn sie axial gegeneinandergedrückt werden. Auf diese Weise werden beim Andrücken des Ringkragens 35 an das Rohrstück 15 nicht nur die Schläge des Drehschlagantriebs 28 auf das Außengestänge 10 übertragen, sondern auch die Drehung. Der Drehantrieb 13 wird somit durch den Drehmötor 30 des Innengestänges unterstützt. Hierdurch wird eine gleichmäßigere Lastverteilung zwischen den Drehantrieben erreicht.The embodiment of FIGS. 2 and 3 differs from that of Figure 1 only in that the end 27 'of the pipe section 15 and the end face 36' of the ring collar 35 are not flat, but have interlocking teeth 35 which have a rotationally fixed coupling between the rod 34 and the Pipe piece 35 cause when they are pressed axially against each other. In this way, not only the impacts of the rotary impact drive 28 are transmitted to the outer rod 10, but also the rotation when the annular collar 35 is pressed onto the pipe section 15. The rotary drive 13 is thus supported by the rotary motor 30 of the inner linkage. This results in a more even load distribution between the rotary drives.

Fig. 4 zeigt den Zustand der Bohrkronen, bei der in den Fign. 1 und 2 dargestellten Betriebsweise, bei der Innengestänge und Außengestänge voneinander entkoppelt sind. Am vorderen Ende des Außengestänges 10 ist eine Ringbohrkrone 42 befestigt, in der die mit dem Innengestänge 11 verbunde zentrische Innenbohrkrone 43 längsverschiebbar geführt ist. Durch den Kanal 44 des hohlen Innengestänges 11 wird Spülflüssigkeit zur Bohrlochsohle gepumpt. Die Spülflüssigkeit tritt durch die Innenbohrkrone 43 hindurch aus und treibt das Bohrgut durch seitliche Nuten der Innenbohrkrone hindurch in den Raum zwischen Innengestänge 11 und Außengestänge 10.Fig. 4 shows the state of the drill bits in which in the Figs. 1 and 2 shown mode of operation, are decoupled from each other in the inner linkage and outer linkage. At the front end of the outer rod 10, a ring drill bit 42 is fastened, in which the central inner drill bit 43 connected to the inner rod 11 is guided in a longitudinally displaceable manner. Flushing liquid is pumped through the channel 44 of the hollow inner rod 11 to the bottom of the borehole. The flushing liquid exits through the inner drill bit 43 and drives the drill material through lateral grooves of the inner drill bit into the space between the inner rod 11 and outer rod 10.

Die Zuführung des Spülmediums und die Abführung des Bohrgutes sind aus Gründen der Übersichtlichkeit nicht im einzelnen dargestellt. Wie aus Fig. 4 zu erkennen ist, ist der Durchmesser der Innenbohrkrone 43 an den Innendurchmesser der Ringbohrkrone 42 angepaßt, so daß die Innenbohrkrone in der Ringbohrkrone zentriert wird. Bei der Betriebsart nach Fig. 4, bei der keine Schläge auf .das Außengestänge 10 ausgeübt werden, ist die Innenbohrkrone 43 gegenüber der Ringbohrkrone 42 zurückgezogen. Beide Bohrkronen können aber auch mit ihren Schneidelementen in einer Ebene angeordnet sein. Ferner besteht die Möglichkeit, die Innenbohrkrone gegenüber der Ringbohrkrone vorlaufen zu lassen, ohne daß eine Schlagkopplung entsteht.The supply of the flushing medium and the discharge of the drillings are not shown in detail for reasons of clarity. As can be seen from FIG. 4, the diameter of the inner drill bit 43 is adapted to the inner diameter of the ring drill bit 42, so that the inner drill bit is centered in the ring drill bit. In the operating mode shown in FIG. 4, in which no punches on .the A ußengestänge 10 are exercised, the Innenbohrkrone 43 is retracted with respect to the ring bit 42nd Both drill bits can also be arranged with their cutting elements in one plane. It is also possible to let the inner drill bit advance in relation to the ring drill bit without an impact coupling occurring.

Fig. 5 zeigt den Zustand, den die Bohrkronen einnehmen, wenn das Innengestänge 11 soweit vorgeschoben ist, daß die Ringschulter 35 gegen das Rohrstück 12 stößt. Die Innenbohrkrone 43 ragt aus der Ringbohrkrone 42 heraus, wird aber von dieser noch zentrisch geführt. Die Innenbohrkrone 43 schlägt auf die Bohrlochsohle 45 und bearbeitet eine relativ große Fläche. Die Ringbohrkrone muß nur denjenigen Teil der Bohrlochsohle bearbeiten, der von der Innenbohrkrone 43 nicht erfaßt worden ist. Durch die Schläge der Innenbohrkrone wird bereits ein Teil des Materials gelöst, der im Bereich der Ringbohrkrone liegt.Fig. 5 shows the state that the drill bits assume when the inner rod 11 is advanced so far that the annular shoulder 35 abuts the pipe section 12. The inner drill bit 43 protrudes from the ring drill bit 42, but is still guided centrally by the latter. The inner drill bit 43 strikes the borehole bottom 45 and works a relatively large area. The ring core bit only has to machine that part of the bottom of the borehole that has not been covered by the inner core bit 43. The blows of the inner core bit already loosen part of the material lying in the area of the ring core bit.

Claims (5)

1. Bohrvorrichtung mit einem eine Ringbohrkrone (42) tragenden rohrförmigen Außengestänge (10), einem in dem Außengestänge (10) verlaufenden, eine Innenbohrkrone (43) tragenden Innengestänge (11), einer gemeinsamen Vorschubvorrichtung für beide Gestänge in Form eines in Längsrichtung der Gestänge verfahrbaren Schlittens (37), der einen Drehantrieb (13) für das Außengestänge (10) und einen Drehschlagantrieb (28) für das Innengestänge (11) trägt,und mit einer Stellvorrichtung (39) zum Verändern des gegenseitigen Abstandes zwischen Drehschlagantrieb (28) und Drehantrieb (13) auf dem Schlitten (37), dadurch gekennzeichnet , daß an dem rückwärtigen Ende des Außengestänges (10) ein durch den Drehantrieb (13) hindurchgehendes Rohrstück (12) befestigt ist, dessen Ende (27) hinter dem Drehantrieb (13) liegt, und daß das Innengestänge (11) in dem Bereich zwischen Drehantrieb (13) und Drehschlagantrieb (28) einen radial abstehenden Ringkragen (35) aufweist, dessen vordere Stirnseite (36) durch die Stellvorrichtung (39) gegen das Ende (27) des Rohrstücks (12) ansetzbar ist.1. drilling device with a R ingbohrkrone (42) carrying tubular outer rod (10), in the outer rod (10) extending, an inner drill bit (43) carrying inner rod (11), a common feed device for both rods in the form of a in the longitudinal direction Movable carriage (37) which carries a rotary drive (13) for the outer linkage (10) and a rotary impact drive (28) for the inner linkage (11), and with an adjusting device (39) for changing the mutual distance between rotary impact drive (28) and rotary drive (13) on the carriage (37), characterized in that a pipe section (12) passing through the rotary drive (13) is attached to the rear end of the outer linkage (10), the end (27) of which is behind the rotary drive (13 ), and that the inner linkage (11) in the area between the rotary drive (13) and rotary impact drive (28) has a radially projecting ring collar (35), the front end face (36) of which by d he adjusting device (39) can be placed against the end (27) of the pipe section (12). 2. Bohrvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Ende (27) des Rohrstücks (12) und die Stirnseite (36) des Ringkragens (35) ringförmige ebene Flächen aufweisen, die gegeneinandersetzbar sind.2. Drilling device according to claim 1, characterized in that the end (27) of the pipe section (12) and the end face (36) of the annular collar (35) have annular flat surfaces which can be placed against one another. 3. Bohrvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Ende (27') des Rohrstücks (12) und die Stirnseite (36') des Ringkragens (35) ineinandergreifende Verzahnungen (40, 41) zur drehfesten Kopplung von Außtengestänge (10) und Innengestänge (11) aufweisen.3. Drilling device according to claim 1, characterized in that the end (27 ') of the pipe section (12) and the end face (36') of the annular collar (35) interlocking toothings (40, 41) for the rotationally fixed coupling of outer linkages (10) and Have inner rods (11). 4. Bohrvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Rohrstück (12), das im Inneren des Drehantriebs (13) nach außen abstehende Mitnahmeelemente (19) zur Übertragung der Drehbewegung aufweist, im Drehantrieb (13) axial verschiebbar gelagert ist.4. Drilling device according to one of claims 1 to 3, characterized in that the pipe section (12) which in the interior of the rotary drive (13) has projecting driving elements (19) for transmitting the rotary movement, axially displaceably mounted in the rotary drive (13) is. 5. Bohrvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß am vorderen Ende des Gehäuses (18) des Drehantriebs (13) eine Federvorrichtung (26) zum Abfedern von Schlägen auf das rückwärtige Ende des Rohrstücks (12) untergebracht ist.5. Drilling device according to one of claims 1 to 4, characterized in that at the front end of the housing (18) of the rotary drive (13) a spring device (26) for cushioning impacts on the rear end of the pipe section (12) is housed.
EP86101230A 1985-02-06 1986-01-30 Drilling apparatus Expired EP0190669B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101230T ATE48176T1 (en) 1985-02-06 1986-01-30 DRILLING JIG.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3503893 1985-02-06
DE3503893A DE3503893C1 (en) 1985-02-06 1985-02-06 Drilling device

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EP0190669A2 true EP0190669A2 (en) 1986-08-13
EP0190669A3 EP0190669A3 (en) 1988-03-02
EP0190669B1 EP0190669B1 (en) 1989-11-23

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0358786A1 (en) * 1988-09-13 1990-03-21 Ing. G. Klemm Bohrtechnik GmbH Superimposing drilling device
EP0379187A1 (en) * 1989-01-20 1990-07-25 Bauer Spezialtiefbau GmbH Method of pulling outer tubings
EP0395998A1 (en) * 1989-05-05 1990-11-07 Thyssen Industrie Ag Forward thrust casing for subterraneously cut tunnels
US5259464A (en) * 1991-04-24 1993-11-09 Krupp Maschinentechnik Gesellschaft Mit Beschrankter Haftung Percussion mechanism for a drill rod unit
WO2007134478A1 (en) * 2006-05-24 2007-11-29 Btd Bohrtechnik Ag Mud shaft for the drill string of a rotary percussive drilling rig, impact stack for a mud shaft and rotary percussive drilling rig
CN102918225A (en) * 2010-03-31 2013-02-06 Tracto技术有限责任两合公司 Method for operating a horizontal drilling device and horizontal drilling device
CN110883358A (en) * 2019-12-05 2020-03-17 陈春 Automatic drilling device for shaft end of shifting fork
US10711520B2 (en) 2017-05-01 2020-07-14 Vermeer Manufacturing Company Dual rod directional drilling system
EP3699391A1 (en) * 2019-02-20 2020-08-26 TRACTO-TECHNIK GmbH & Co. KG Soil drilling device and method for drilling in soil
US10995563B2 (en) 2017-01-18 2021-05-04 Minex Crc Ltd Rotary drill head for coiled tubing drilling apparatus
US11149501B2 (en) 2019-03-14 2021-10-19 Vermeer Manufacturing Company Rod coupler and coupled rod assembly
US11180962B2 (en) 2018-11-26 2021-11-23 Vermeer Manufacturing Company Dual rod directional drilling system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300080A1 (en) * 1987-07-25 1989-01-25 Ing. G. Klemm Bohrtechnik GmbH Device for drilling through cappings
DE4113422C3 (en) * 1991-04-25 1998-06-10 Klemm Bohrtech Earth drilling rig
DE4432710C1 (en) * 1994-09-14 1996-04-11 Klemm Bohrtech Underground horizon boring tool with directional control
DE19612902C2 (en) * 1996-03-30 2000-05-11 Tracto Technik Direction drilling method and apparatus for performing the method
DE19732479C1 (en) * 1997-07-29 1999-04-08 Klemm Guenter Hammer drill
DE19836389C1 (en) 1998-08-12 2000-04-13 Deilmamm Haniel Maschinen Und Drilling device with double impact system
FI121025B (en) * 2004-12-07 2010-06-15 Sandvik Mining & Constr Oy Method for pipe drilling, drilling unit and adapter device
AU2010362505A1 (en) * 2010-10-12 2013-04-04 Shijiazhuang Zhongmei Coal Mine Equipment Manufacture Co., Ltd. Assembled drilling tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176079B (en) * 1960-04-05 1964-08-20 Atlas Copco Aktienbolag Device for drilling holes in mountains covered by loose soil
DE1909931A1 (en) * 1968-02-28 1969-09-18 Ver Edelstahlwerke Ag Device for overlay, anchor hole and / or underwater drilling
DE2924393A1 (en) * 1979-06-16 1980-12-18 Brueckner Grundbau Gmbh Overlay borehole drilling rig - has independent rotary drives for inner and outer tubes on feed assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176079B (en) * 1960-04-05 1964-08-20 Atlas Copco Aktienbolag Device for drilling holes in mountains covered by loose soil
DE1909931A1 (en) * 1968-02-28 1969-09-18 Ver Edelstahlwerke Ag Device for overlay, anchor hole and / or underwater drilling
DE2924393A1 (en) * 1979-06-16 1980-12-18 Brueckner Grundbau Gmbh Overlay borehole drilling rig - has independent rotary drives for inner and outer tubes on feed assembly

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0358786A1 (en) * 1988-09-13 1990-03-21 Ing. G. Klemm Bohrtechnik GmbH Superimposing drilling device
EP0379187A1 (en) * 1989-01-20 1990-07-25 Bauer Spezialtiefbau GmbH Method of pulling outer tubings
DE3901664A1 (en) * 1989-01-20 1990-07-26 Bauer Spezialtiefbau METHOD FOR DRAWING EXTERNAL RODS
EP0395998A1 (en) * 1989-05-05 1990-11-07 Thyssen Industrie Ag Forward thrust casing for subterraneously cut tunnels
US5259464A (en) * 1991-04-24 1993-11-09 Krupp Maschinentechnik Gesellschaft Mit Beschrankter Haftung Percussion mechanism for a drill rod unit
WO2007134478A1 (en) * 2006-05-24 2007-11-29 Btd Bohrtechnik Ag Mud shaft for the drill string of a rotary percussive drilling rig, impact stack for a mud shaft and rotary percussive drilling rig
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Also Published As

Publication number Publication date
ATE48176T1 (en) 1989-12-15
DE3503893C1 (en) 1985-10-24
EP0190669A3 (en) 1988-03-02
EP0190669B1 (en) 1989-11-23

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