EP0379187B1 - Method of pulling outer tubings - Google Patents

Method of pulling outer tubings Download PDF

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Publication number
EP0379187B1
EP0379187B1 EP90100953A EP90100953A EP0379187B1 EP 0379187 B1 EP0379187 B1 EP 0379187B1 EP 90100953 A EP90100953 A EP 90100953A EP 90100953 A EP90100953 A EP 90100953A EP 0379187 B1 EP0379187 B1 EP 0379187B1
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EP
European Patent Office
Prior art keywords
rod
drill
slide
tie rod
mount
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.)
Expired - Lifetime
Application number
EP90100953A
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German (de)
French (fr)
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EP0379187A1 (en
Inventor
Maximilian Arzberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Spezialtiefbau GmbH
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Bauer Spezialtiefbau GmbH
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Application filed by Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Priority to AT90100953T priority Critical patent/ATE76459T1/en
Publication of EP0379187A1 publication Critical patent/EP0379187A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • 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
    • E21B19/20—Combined feeding from rack and connecting, e.g. automatically
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/003—Machines for drilling anchor holes and setting anchor bolts
    • E21D20/006—Machines for drilling anchor holes and setting anchor bolts having magazines for storing and feeding anchoring-bolts

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an anchor drilling device for introducing ground anchors according to the preamble of claim 2 (as is known to the applicant).
  • the object is achieved by the method according to claim 1 and by an anchor drilling device according to claim 2.
  • the ground anchor is secured by a support element, which is preferably clamped between the anchor and a counter bearing arranged on the drill carriage.
  • a support element which is preferably clamped between the anchor and a counter bearing arranged on the drill carriage.
  • the support element can be designed in the form of an inner rod. If the support element is designed as a seal towards the outer linkage, the penetration of water into the outer linkage to be pulled is prevented.
  • An anchor drilling machine in particular for performing the method according to claim 1, is designed according to claim 2. It allows a simple connection and pulling of double rod sections, whereby separate pulling of inner rods and simultaneous pulling of inner and outer rods is possible.
  • Both the inner and the outer linkage or only the inner linkage of a double linkage section is held in a linkage magazine specially designed for the double linkage sections.
  • the loading device also grips the inner rod or both the inner and the outer rod and transfers both to the drill carriage in a fixed position. Since the inner linkage is held by at least one gripper, it is not freely movable in the outer linkage.
  • the inner linkage In the drill carriage, the inner linkage is actuated by a first power turret and the outer linkage by another power turret.
  • the inner rod can first be connected to the drilled inner rod and then the outer rod to the drilled outer rod.
  • the joining and drilling of the double rod sections is therefore largely automated.
  • the double rod sections are pulled in the reverse order in a simplified manner.
  • the separately operable power heads and clamps for the inner and outer rods also allow the inner rod to be pulled separately, which enables the installation of ground anchors in bores that are piped through the outer rod.
  • the installation and removal of the double rod sections in and out of the rod magazine could be done, for example, by hydraulically operated holding elements which open when the grippers of the loading device have gripped a double rod shot.
  • the spacing of the holding elements from one another is adjustable. If a double rod section is held at its ends by the holding elements, it is released by, for example, moving one holding element away from the other. As a result, the double rod section is only in contact with a holding element. If at least one gripper of the loading device is adjustable in the longitudinal direction of the drill carriage, the double rod section can then be moved in the direction of the adjusted holding element and removed from the holding element still in contact.
  • an actuatable actuating element for adjusting at least one holding element is formed on the part of the loading device which is connected to the movable gripper.
  • the movable gripper can then at the same time push the holding element resting against the other end of the double rod section away from a holding element and thereby remove the double rod section from the rod magazine.
  • the rod magazine is designed according to claim 7, whereby the access paths for the loading device to all double rod sections located in the rod magazine are the same.
  • the power turrets for the inner and outer rods can be actuated independently of one another if a power turret is arranged on a carriage that can be moved along the drill carriage.
  • the slide with the rotary head of the outer linkage can be moved along the drill carriage and the slide of the rotary head of the inner linkage can be fixed to the drill carriage, for example, first the outer linkage and then the inner linkage can be drilled.
  • the carriage with the power rotary head of the inner linkage can be pulled together with the slide of the power rotary head of the outer linkage, for example for pulling only the drilled inner rod can be moved.
  • the distance between the carriages coupled to one another is adjustable. In this way, the inner and outer linkages can be moved against each other.
  • Drill rods attached to one another can be broken open or released in a simple manner if at least two clamping pliers can be pivoted relative to one another about the drilling axis.
  • the anchor drilling device has an upward-pointing carrier with a receiving carriage that can be moved on it for receiving the drill carriage.
  • the drilling carriage is advantageously rotatably mounted on the receiving carriage, the angle between the drilling carriage and receiving carriage being adjustable at least in a range from -97 ° to + 97 ° using a hydraulic actuating cylinder.
  • ground anchors can be positioned at different heights and angles, e.g. into an embankment or slope. The height and angle are set independently of each other.
  • Fig. 1 shows an anchor drilling device designed as a drilling carriage with a crawler track 1a, on which a device upper part 1c is rotatably arranged via a slewing ring 1b.
  • the upper part 1c carries the drive unit (not shown in more detail), a driver's cab and a support 2 mounted on a horizontal pivot axis 1d, which is designed as a one-piece mast for receiving the drilling device.
  • the mast 2 is supported at its lower end on the pivot axis 1d and can be pivoted by a first hydraulic cylinder 2a arranged between the upper part 1c and a section of the mast 2 located further up.
  • a receiving carriage 3 for receiving the drill can be moved in the longitudinal direction of the mast 2.
  • the receiving carriage 3 has a swivel joint 4, on which a drill carriage 6 is mounted via a linkage 7.
  • the swivel joint 4 can be pivoted by means of a second hydraulic cylinder 5 in order to be able to incline the drill carriage 6 continuously relative to the ground.
  • the drill carriage 6 is mounted on the articulation 7 in a longitudinally displaceable manner via guides.
  • the linkage 7 also carries a rod magazine 8 for receiving double rod sections.
  • the rod magazine 8 is of part-circular design and is provided with a plurality of drill rod holders, which each hold both the inner rod 9 and the outer rod 10 or only the inner rod 9 of the double rod section.
  • each drill pipe holder has two holding elements 11, 12 engaging at the ends of a double-rod section.
  • the first holding element 11 is designed as a holding mandrel on which the inner pipe 9 can be plugged on at one end.
  • the holding mandrel 11 has a stop ring 14 against which one end of the outer rod 10 rests.
  • the second holding element 12 is designed as a sleeve with an inner bore 13 for receiving the other end of the inner rod 9.
  • the other end of the outer linkage 10 lies on the held inner linkage.
  • a loading device 15 is mounted on the rod magazine 8 approximately in the center of the part-circular rod magazine. As a result, the access paths to all double-rod sections contained in the rod magazine 8 are approximately the same.
  • the loading device 15 has hydraulically actuated grippers which are designed as clamping jaws 16, 16a and which can grip both the inner linkage 9 and the outer linkage 10 or only the inner linkage 9.
  • the clamping jaws 16, 16a are connected to a rotatably driven shaft 15c via two swivel arms 15a, 15b aligned parallel to one another.
  • the clamping jaws 16, 16a can be displaced in the longitudinal direction of the drilling mount 6 via a third hydraulic cylinder 17 and the swivel arms 15a, 15b.
  • the sleeve 12 of the drill rod holder is secured by means of detents at least in two places and can be displaced along the drill carriage 6 in the direction of the side facing away from the double rod section via an adjusting disk 21.
  • a driving lever 20 can be pivoted into an actuating position by the fourth hydraulic cylinder 19.
  • the two clamping jaws 16, 16a are moved in the direction of the sleeve 12 by the third hydraulic cylinder 17.
  • the inner rod 9 pushes the sleeve 12 with the longitudinal displacement of the loading device.
  • the double rod section is thus released from the holding mandrel 11 and can be removed and transferred to the drill carriage 6.
  • the insertion of a telescoping double rod into the drill rod holder is done in reverse order.
  • the double rod section is first inserted into the sleeve 12 by the jaws 16, 16a of the loading unit 15 during a longitudinal movement caused by the third hydraulic cylinder 17.
  • the driving lever 20 is put back into its actuating position by the fourth hydraulic cylinder 19, whereby this turns on the adjusting disk 21 engages the sleeve 12 and takes it with the longitudinal displacement of the jaws 16, 16a by the third hydraulic cylinder.
  • the other end of the double linkage can then be plugged onto the holding mandrel 11 and pulled back again towards the holding mandrel 11 by means of a return movement triggered by the third hydraulic cylinder 17.
  • the inner rod 9 is thus mounted between the mandrel 11 and the sleeve 12, while the outer rod 10 rests only on the side of the mandrel 11.
  • the inner and outer clamping pliers 24 and 22 can be pivoted about the drilling axis by means of laterally arranged hydraulic cylinders 32 (FIG. 2).
  • Two power heads 25 and 26 can be moved on carriages 27, 28, 29 on the drilling carriage 6.
  • the inner power turret 26 facing the borehole actuates the outer linkage of the double rod section, while the outer power turret 25 actuates the inner linkage of the double rod section.
  • the carriage arrangement 27, 28, 29 for carrying the power rotary heads 25, 26 is shown in FIG. 3 as section III-III from FIG. 1.
  • the power turret 26 for drilling and pulling the outer linkage is arranged on the inner slide 27 and can be moved on the slide 6 by a drive mechanism (not shown) (for example an endless chain drive).
  • the power turret 25 for drilling and pulling inner rods is arranged on the outer slide 29. This is connected to a connecting slide 28 via a fifth hydraulic cylinder 34 and can be fixed on the drill carriage 6.
  • the outer slide 29 and the inner slide 27 can be coupled to and uncoupled from one another via the connecting slide 28.
  • a latching pawl 36 is provided on the connecting carriage 28, which can be actuated hydraulically 35 for engaging behind a section of the inner carriage 27.
  • the inner and outer sled 27 and 29 are coupled to one another via the connecting slide 28, their distance from one another can be adjusted via the fifth hydraulic cylinder 34. As a result, the inner linkage can be moved relative to the outer linkage. In the coupled state, the carriages 27, 28, 29 form a whole carriage 33, which can be moved on the drill carriage 6 via the inner carriage 27.
  • the drilled double rod is held during a rod change by the outer two clamping pliers 22 and 23 facing the borehole.
  • the double rod inserted into the drill carriage 6 is first moved in the direction of the borehole until the outer rod is guided in the conical clamping tongs 24.
  • the inner linkage is then connected to the associated power head 25.
  • the clamping jaw 16a for the inner linkage is released separately and the outer linkage is connected to the power turret 26.
  • the loading device 15 now releases the double rod section and is moved into a rest position.
  • the two power heads 25 and 26 are adjusted relative to one another in such a way that the inner linkage protrudes from the outer linkage.
  • the protruding inner rod is moved against the conical middle clamp 23, which holds a drilled inner rod and the inner rod located in the drill carriage 6 is screwed to the drilled inner rod by means of the associated power turret 25.
  • the middle clamp 23 is opened and the inner power head 26 moves the outer linkage against the outer, also conical clamp 22, which holds a drilled outer linkage.
  • the inner linkage in the drill carriage 6 is now screwed to the drilled outside linkage by the inner power turret 26. Now is the double rod section located in the drill carriage 6 connected to the drilled double rod and the drilling process can begin.
  • the anchor drilling device 1 With the anchor drilling device 1, it is also possible to remove only one inner rod separately for installing an anchor in a cased bore.
  • the drilled outer rod is held by the outer clamp 22 and the inner rod by the two clamps 23 and 24 located further inside, the connection point of the inner rod being between the clamps 23 and 24.
  • the inner rods are broken or released by pivoting the inner clamping pliers 24 relative to the central clamping pliers 23. After detaching, the inner rod is placed in the rod magazine 8 and the next inner rod can be pulled into the drill carriage with the power turret 25. After installing the anchor, the outer linkage can also be pulled.
  • an inner linkage is always first taken as a support element from the linkage magazine 8 and attached to the associated outer power turret 25 for the inner linkage.
  • the drive head 26 is moved up to the outer linkage.
  • the outer linkage slide 27 must be decoupled from the inner linkage slide 29 via the displacement slide 28.
  • the unit comprising the displacement slide 28 and the inner slide 29 is fixed on the drill carriage 6.
  • the inner rod is held in a defined position. The anchor is therefore supported when pulling the outer rod over the inner rod located in the drill carriage 6 against the rotary head 25 located on the fixed inner rod carriage 29 and can therefore not be loosened when pulling the outer rod.
  • Pulling out the built-in anchor can be supported by the lockable inner rod slide 29.
  • an attachment on the power turret 25 for the inner linkage it is possible to seal the outer linkage against water when installing the anchor.
  • simple rods can also be drilled and pulled in a known manner.

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  • Engineering & Computer Science (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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Abstract

In a method of boring out and pulling double tubing (9, 10) having inner and outer tubing, the boring-out and pulling of the tubing being effected by means of at least one power-driven rotary head (25, 26) traversable on a drill carriage (6), an installed ground anchor is loosened by virtue of the fact that the inner tubing (9) is pulled and the anchor installed before the outer tubing (10) is pulled, that the installed anchor is then secured against pulling-out by inner tubing (9) or a supporting element, and that, when the anchor is secured, the outer tubing (10) is pulled over the inner tubing (9) or the supporting element and that both the inner and outer tubing are deposited together. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruchs 1 und ein Ankerbohrgerät zum Einbringen von Erdankern gemäß Oberbegriff des Anspruchs 2 (wie bei der Anmelderin bekannt ist).The invention relates to a method according to the preamble of claim 1 and an anchor drilling device for introducing ground anchors according to the preamble of claim 2 (as is known to the applicant).

Es ist bekannt, Erdanker zur Absicherung von Böschungen oder Pfahlwänden in ein durch Außengestänge verrohrtes Bohrloch einzubringen und nach dem Einbringen des Erdankers das Außengestänge aus dem Bohrloch zu ziehen. Hierbei kommt es jedoch vor, daß der Erdanker gelockert oder teilweise mit aus dem Bohrloch gezogen wird.It is known to insert ground anchors to secure embankments or pile walls in a borehole piped through outer rods and to pull the outer rods out of the borehole after the ground anchor has been introduced. Here, however, it happens that the ground anchor is loosened or partially pulled out of the borehole.

Es ist Aufgabe der Erfindung, ein Verfahren der gattungsgemäßen Art zu schaffen, bei dem beim Ziehen von Gestängen, insbesondere des Außengestänges, ein Lockern des in das Bohrloch eingebrachten Erdankers im wesentlichen vermieden wird, und ein Ankerbohrgerät zu konzipieren, das sich durch eine einfache maschinengestützte Betätigung der Doppelgestänge beim Abbohren und Ziehen zur schnellen und wirtschaftlichen Durchführung des Verfahrens eignet.It is an object of the invention to provide a method of the generic type, in which loosening of the ground anchor introduced into the borehole is essentially avoided when pulling rods, in particular the outer rod, and to design an anchor drilling device which is simple machine-based Operation of the double rod during drilling and pulling is suitable for fast and economical implementation of the process.

Die Aufgabe wird erfindungsgemäß durch das Verfahren gemäß Anspruch 1 und durch ein Ankerbohrgerät gemäß Anspruch 2 gelöst.The object is achieved by the method according to claim 1 and by an anchor drilling device according to claim 2.

Bei dem Verfahren wird der Erdanker durch ein Abstützelement gesichert, das vorzugsweise zwischen dem Anker und einem an der Bohrlafette angeordneten Gegenlager eingespannt ist. Beim Ziehen des Außengestänges kann daher der Anker nicht aus dem Bohrloch gelöst werden.In the method, the ground anchor is secured by a support element, which is preferably clamped between the anchor and a counter bearing arranged on the drill carriage. When pulling the outer rod, the anchor cannot be released from the drill hole.

Das Abstützelement kann in der Form eines Innengestänges ausgebildet sein. Ist das Abstützelement zum Außengestänge hin als Dichtung ausgebildet, so wird das Eindringen von Wasser in das zu ziehende Außengestänge verhindert.The support element can be designed in the form of an inner rod. If the support element is designed as a seal towards the outer linkage, the penetration of water into the outer linkage to be pulled is prevented.

Ein Ankerbohrgerät, insbesondere zum Durchführen des Verfahrens nach Anspruch 1, ist gemäß Anspruch 2 ausgebildet. Es erlaubt ein vereinfachtes Aneinanderstecken und Ziehen von Doppelgestängeschüssen, wobei ein separates Ziehen von Innengestängen und ein gleichzeitiges Ziehen von Innen- und Außengestängen möglich ist.An anchor drilling machine, in particular for performing the method according to claim 1, is designed according to claim 2. It allows a simple connection and pulling of double rod sections, whereby separate pulling of inner rods and simultaneous pulling of inner and outer rods is possible.

In einem speziell für die Doppelgestängeschüsse ausgebildeten Gestängemagazin wird sowohl das Innen- als auch das Außengestänge oder nur das Innengestänge eines Doppelgestängeschusses gehalten. Auch die Beschickungseinrichtung greift das Innengestänge oder sowohl das Innen- als auch das Außenstänge und überführt beide in einer festgelegten Lage in die Bohrlafette. Da das Innengestänge durch mindestens einen Greifer gehalten wird, ist es nicht in dem Außengestänge frei beweglich. In der Bohrlafette wird das Innengestänge von einem ersten Kraftdrehkopf und das Außengestänge von einem anderen Kraftdrehkopf betätigt. In Verbindung mit unterschiedlichen Klemmbacken bzw. Kraftdrehköpfen für die Innen- und Außengestänge kann damit zuerst das Innengestänge mit dem abgebohrten Innengestänge verbunden werden und anschließend das Außengestänge mit dem abgebohrten Außengestänge. Das Aneinanderstecken und Abbohren der Doppelgestängeschüsse ist daher weitgehend automatisiert. Das Ziehen der Doppelgestängeschüsse erfolgt in der umgekehrten Reihenfolge in vereinfachter Weise.
Die separat betätigbaren Kraftdrehköpfe und Klemmzangen für Innen- und Außengestänge ermöglichen auch das separate Ziehen des Innengestänges, was den Einbau von Erdankern bei Bohrungen ermöglicht, die durch das Außengestänge verrohrt sind.Both the inner and the outer linkage or only the inner linkage of a double linkage section is held in a linkage magazine specially designed for the double linkage sections. The loading device also grips the inner rod or both the inner and the outer rod and transfers both to the drill carriage in a fixed position. Since the inner linkage is held by at least one gripper, it is not freely movable in the outer linkage. In the drill carriage, the inner linkage is actuated by a first power turret and the outer linkage by another power turret. In conjunction with different clamping jaws or power rotary heads for the inner and outer rods, the inner rod can first be connected to the drilled inner rod and then the outer rod to the drilled outer rod. The joining and drilling of the double rod sections is therefore largely automated. The double rod sections are pulled in the reverse order in a simplified manner.
The separately operable power heads and clamps for the inner and outer rods also allow the inner rod to be pulled separately, which enables the installation of ground anchors in bores that are piped through the outer rod.

Der Ein- und Ausbau der Doppelgestängeschüsse in und aus dem Gestängemagazin könnte z.B. durch hydraulisch betätigte Halteelemente erfolgen, die öffnen, wenn die Greifer der Beschickungseinrichtung einen Doppelgestängeschuß gegriffen haben. In einer vorteilhaften Anordnung ist jedoch der Abstand der Halteelemente zueinander verstellbar. Wenn ein Doppelgestängeschuß an seinen Enden von den Halteelementen gehalten ist, wird er dadurch freigegeben, daß z.B. ein Halteelement von dem anderen weggefahren wird. Dadurch liegt der Doppelgestängeschuß nur noch an einem Halteelement an. Wenn mindestens ein Greifer der Beschickungseinrichtung in Längsrichtung der Bohrlafette verstellbar ist, kann der Doppelgestängeschuß dann in Richtung des verstellten Halteelementes bewegt und aus dem noch anliegenden Halteelement entfernt werden.The installation and removal of the double rod sections in and out of the rod magazine could be done, for example, by hydraulically operated holding elements which open when the grippers of the loading device have gripped a double rod shot. In an advantageous arrangement, however, the spacing of the holding elements from one another is adjustable. If a double rod section is held at its ends by the holding elements, it is released by, for example, moving one holding element away from the other. As a result, the double rod section is only in contact with a holding element. If at least one gripper of the loading device is adjustable in the longitudinal direction of the drill carriage, the double rod section can then be moved in the direction of the adjusted holding element and removed from the holding element still in contact.

In einer vorteilhaften Weiterbildung der Erfindung ist an dem mit dem verfahrbaren Greifer verbundenen Teil der Beschickungseinrichtung ein betätigbares Stellelement zum Verstellen mindestens eines Halteelementes ausgebildet. Der verfahrbare Greifer kann dann beim Herausziehen eines Doppelgestängeschusses aus einem Halteelement gleichzeitig das am anderen Ende des Doppelgestängeschusses anliegende Halteelement wegdrücken und dadurch den Doppelgestängeschuß aus dem Gestängemagazin entnehmen. Günstigerweise ist hierbei das Gestängemagazin gemäß Anspruch 7 ausgebildet, wodurch die Zugriffswege für die Beschickungseinrichtung auf alle in dem Gestängemagazin befindlichen Doppelgestängeschüsse gleich sind.In an advantageous development of the invention, an actuatable actuating element for adjusting at least one holding element is formed on the part of the loading device which is connected to the movable gripper. The movable gripper can then at the same time push the holding element resting against the other end of the double rod section away from a holding element and thereby remove the double rod section from the rod magazine. Conveniently, the rod magazine is designed according to claim 7, whereby the access paths for the loading device to all double rod sections located in the rod magazine are the same.

Die Kraftdrehköpfe für das Innen- und Außengestänge können unabhängig voneinander betätigt werden, wenn jeweils ein Kraftdrehkopf auf jeweils einem längs der Bohrlafette verfahrbaren Schlitten angeordnet ist.The power turrets for the inner and outer rods can be actuated independently of one another if a power turret is arranged on a carriage that can be moved along the drill carriage.

Wenn der Schlitten mit dem Kraftdrehkopf des Außengestänges längs der Bohrlafette verfahrbar und der Schlitten des Kraftdrehkopfes des Innengestänges an der Bohrlafette festlegbar ist, läßt sich zum Beispiel zuerst das Außengestänge und danach das Innengestänge abbohren. Durch Ankoppeln der Schlitten aneinander kann der Schlitten mit dem Kraftdrehkopf des Innengestänges gemeinsam mit dem Schlitten des Kraftdrehkopfes des Außengestänges z.B. zum Ziehen lediglich des abgebohrten Innengestänges verfahren werden.If the slide with the rotary head of the outer linkage can be moved along the drill carriage and the slide of the rotary head of the inner linkage can be fixed to the drill carriage, for example, first the outer linkage and then the inner linkage can be drilled. By coupling the carriages to one another, the carriage with the power rotary head of the inner linkage can be pulled together with the slide of the power rotary head of the outer linkage, for example for pulling only the drilled inner rod can be moved.

In einer vorteilhaften Ausbildung der Erfindung ist der Abstand der aneinander gekoppelten Schlitten einstellbar. Auf diese Weise können das Innen- und Außengestänge gegeneinander verschoben werden.In an advantageous embodiment of the invention, the distance between the carriages coupled to one another is adjustable. In this way, the inner and outer linkages can be moved against each other.

Aneinandergesteckte Bohrgestänge können auf einfache Weise aufgebrochen oder gelöst werden, wenn mindestens zwei Klemmzangen relativ zueinander um die Bohrachse schwenkbar sind.Drill rods attached to one another can be broken open or released in a simple manner if at least two clamping pliers can be pivoted relative to one another about the drilling axis.

Es ist möglich, die Bohrlafette z.B. an einem Baggerarm zu befestigen. Mit diesem könnte die Bohrlafette in verstellbaren Winkeln gegenüber dem Boden geneigt werden. In einer vorteilhaften Ausführung weist das Ankerbohrgerät jedoch einen nach oben weisenden Träger mit einem an diesem verfahrbaren Aufnahmeschlitten zur Aufnahme der Bohrlafette auf. Die Bohrlafette ist dabei in vorteilhafter Weise an dem Aufnahmeschlitten drehbar gelagert, wobei der Winkel zwischen Bohrlafette und Aufnahmeschlitten über einen hydraulischen Stellzylinder mindestens in einem Bereich von -97° bis +97° einstellbar ist. Auf diese Weise können Erdanker in Bezug zum Boden in verschiedenen Höhen und Winkelstellungen, z.B. in eine Böschung oder einen Hang, abgebohrt werden. Die Einstellung der Höhe und des Winkels erfolgt hierbei unabhängig voneinander.It is possible to e.g. to attach to an excavator arm. This could be used to tilt the drill carriage at adjustable angles to the ground. In an advantageous embodiment, however, the anchor drilling device has an upward-pointing carrier with a receiving carriage that can be moved on it for receiving the drill carriage. The drilling carriage is advantageously rotatably mounted on the receiving carriage, the angle between the drilling carriage and receiving carriage being adjustable at least in a range from -97 ° to + 97 ° using a hydraulic actuating cylinder. In this way, ground anchors can be positioned at different heights and angles, e.g. into an embankment or slope. The height and angle are set independently of each other.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous developments of the invention are the subject of the dependent claims.

Die Erfindung wird nachfolgend anhand der Zeichnung schematisch beschrieben. Es zeigen:

  • Fig. 1 eine Seitenansicht des Ankerbohrgeräts;
  • Fig. 2 eine Frontansicht II des Ankerbohrgeräts aus Fig. 1 und
  • Fig. 3 den Schnitt III-III aus Fig. 1.
The invention is described schematically below with reference to the drawing. Show it:
  • Fig. 1 is a side view of the anchor drilling machine;
  • Fig. 2 is a front view II of the anchor drilling machine from Fig. 1 and
  • 3 shows the section III-III from FIG. 1.

Fig. 1 zeigt ein als Bohrwagen ausgebildetes Ankerbohrgerät mit einem Raupenfahrwerk 1a, auf dem über einen Drehkranz 1b ein Geräteoberteil 1c drehbar angeordnet ist. Das Geräteoberteil 1c trägt das nicht näher dargestellte Antriebsaggregat, eine Führerkabine und einen an einer horizontalen Schwenkachse 1d gelagerten Träger 2, der als einteiliger Mast zur Aufnahme des Bohrgeräts ausgebildet ist. Der Mast 2 ist an seinem unteren Ende an der Schwenkachse 1d gelagert und durch einen zwischen dem Geräteoberteil 1c und einem weiter oben gelegenen Abschnitt des Mastes 2 angeordneten ersten Hydraulikzylinder 2a verschwenkbar.Fig. 1 shows an anchor drilling device designed as a drilling carriage with a crawler track 1a, on which a device upper part 1c is rotatably arranged via a slewing ring 1b. The upper part 1c carries the drive unit (not shown in more detail), a driver's cab and a support 2 mounted on a horizontal pivot axis 1d, which is designed as a one-piece mast for receiving the drilling device. The mast 2 is supported at its lower end on the pivot axis 1d and can be pivoted by a first hydraulic cylinder 2a arranged between the upper part 1c and a section of the mast 2 located further up.

An dem Mast 2 ist ein Aufnahmeschlitten 3 zur Aufnahme des Bohrgeräts in Längsrichtung des Mastes 2 verfahrbar. Der Aufnahmeschlitten 3 weist ein Drehgelenk 4 auf, an dem über eine Anlenkung 7 eine Bohrlafette 6 gelagert ist. Das Drehgelenk 4 ist über einen zweiten Hydraulikzylinder 5 verschwenkbar, um die Bohrlafette 6 stufenlos gegenüber dem Boden neigen zu können. Die Bohrlafette 6 ist an der Anlenkung 7 über Führungen längsverschieblich gelagert. Die Anlenkung 7 trägt weiterhin ein Gestängemagazin 8 zur Aufnahme von Doppelgestängeschüssen. Das Gestängemagazin 8 ist teilkreisförmig ausgebildet und mit mehreren Bohrgestängehalterungen versehen, die jeweils sowohl das Innengestänge 9 als auch das Außengestänge 10 oder nur das Innengestänge 9 des Doppelgestängeschusses aufnehmen. Hierfür hat jede Bohrgestängehalterung zwei an den Enden eines Doppelgestängeschusses angreifende Halteelemente 11, 12. Das erste Halteelement 11 ist als Aufnahmedorn ausgebildet, auf dem das Innengestänge 9 an seinem einen Ende aufsteckbar ist. Der Aufnahmedorn 11 hat einen Anschlagring 14, an dem das eine Ende des Außengestänges 10 anliegt. Das zweite Halteelement 12 ist als Hülse mit einer Innenbohrung 13 zur Aufnahme des anderen Endes des Innengestänges 9 ausgebildet. Das andere Ende des Außengestänges 10 liegt auf dem gehaltenen Innengestänge auf.On the mast 2, a receiving carriage 3 for receiving the drill can be moved in the longitudinal direction of the mast 2. The receiving carriage 3 has a swivel joint 4, on which a drill carriage 6 is mounted via a linkage 7. The swivel joint 4 can be pivoted by means of a second hydraulic cylinder 5 in order to be able to incline the drill carriage 6 continuously relative to the ground. The drill carriage 6 is mounted on the articulation 7 in a longitudinally displaceable manner via guides. The linkage 7 also carries a rod magazine 8 for receiving double rod sections. The rod magazine 8 is of part-circular design and is provided with a plurality of drill rod holders, which each hold both the inner rod 9 and the outer rod 10 or only the inner rod 9 of the double rod section. For this purpose, each drill pipe holder has two holding elements 11, 12 engaging at the ends of a double-rod section. The first holding element 11 is designed as a holding mandrel on which the inner pipe 9 can be plugged on at one end. The holding mandrel 11 has a stop ring 14 against which one end of the outer rod 10 rests. The second holding element 12 is designed as a sleeve with an inner bore 13 for receiving the other end of the inner rod 9. The other end of the outer linkage 10 lies on the held inner linkage.

An dem Gestängemagazin 8 ist eine Beschickungseinrichtung 15 etwa im Mittelpunkt des teilkreisförmigen Gestängemagazins gelagert. Hierdurch sind die Zugriffswege auf alle in dem Gestängemagazin 8 enthaltenen Doppelgestängeschüsse in etwa gleich.A loading device 15 is mounted on the rod magazine 8 approximately in the center of the part-circular rod magazine. As a result, the access paths to all double-rod sections contained in the rod magazine 8 are approximately the same.

Wie Fig. 2 zeigt, hat die Beschickungseinrichtung 15 hydraulisch betätigte Greifer, die als Klemmbacken 16,16a ausgebildet sind und die sowohl das Innengestänge 9 als auch das Außengestänge 10 oder nur das Innengestänge 9 fassen können. Die Klemmbacken 16,16a sind über zwei parallel zueinander ausgerichtete Schwenkarme 15a, 15b mit einer drehbar angetriebenen Welle 15c verbunden. Über einen dritten Hydraulikzylinder 17 und die Schwenkarme 15a, 15b sind die Klemmbacken 16, 16a in Längsrichtung der Bohrlafette 6 verschiebbar. Die Hülse 12 der Bohrgestängehalterung ist durch Arretierungen mindestens an zwei Stellen gesichert und längs der Bohrlafette 6 in Richtung auf die dem Doppelgestängeschuß abgewandte Seite über eine Stellscheibe 21 verschiebbar. An der der Hülse näher gelegenen Klemmbacke 16a ist ein als Mitnehmerhebel 20 ausgebildetes Stellelement angeordnet, das durch einen vierten Hydraulikzylinder 19 betätigbar ist. Beim Entnehmen eines Doppelgestängeschusses aus der Bohrgestängehalterung fassen die Klemmbacken 16, 16a sowohl das Innengestänge 9 als auch das Außengestänge 10. Durch den vierten Hydraulikzylinder 19 kann der Mitnehmerhebel 20 in eine Betätigungsstellung geschwenkt werden. Die beiden Klemmbacken 16, 16a werden durch den dritten Hydraulikzylinder 17 in Richtung auf die Hülse 12 verfahren. Hierbei schiebt das Innengestänge 9 die Hülse 12 beim Längsverschieben der Beschickungseinrichtung mit. Damit kommt der Doppelgestängeschuß vom Aufnahmedorn 11 frei und kann entnommen und in die Bohrlafette 6 überführt werden.As shown in FIG. 2, the loading device 15 has hydraulically actuated grippers which are designed as clamping jaws 16, 16a and which can grip both the inner linkage 9 and the outer linkage 10 or only the inner linkage 9. The clamping jaws 16, 16a are connected to a rotatably driven shaft 15c via two swivel arms 15a, 15b aligned parallel to one another. The clamping jaws 16, 16a can be displaced in the longitudinal direction of the drilling mount 6 via a third hydraulic cylinder 17 and the swivel arms 15a, 15b. The sleeve 12 of the drill rod holder is secured by means of detents at least in two places and can be displaced along the drill carriage 6 in the direction of the side facing away from the double rod section via an adjusting disk 21. On the clamping jaw 16a closer to the sleeve there is an adjusting element designed as a driving lever 20, which can be actuated by a fourth hydraulic cylinder 19. When a double-rod section is removed from the drill rod holder, the clamping jaws 16, 16a grip both the inner rod 9 and the outer rod 10. The driving lever 20 can be pivoted into an actuating position by the fourth hydraulic cylinder 19. The two clamping jaws 16, 16a are moved in the direction of the sleeve 12 by the third hydraulic cylinder 17. Here, the inner rod 9 pushes the sleeve 12 with the longitudinal displacement of the loading device. The double rod section is thus released from the holding mandrel 11 and can be removed and transferred to the drill carriage 6.

Das Einlegen eines ineinander geschobenen Doppelgestänges in die Bohrgestängehalterung geschieht in umgekehrter Reihenfolge. Der Doppelgestängeschuß wird zunächst durch die Klemmbacken 16, 16a der Beschickungseinheit 15 bei einer durch den dritten Hydraulikzylinder 17 verursachten Längsbewegung in die Hülse 12 gesteckt. Der Mitnehmerhebel 20 wird durch den vierten Hydraulikzylinder 19 wieder in seine Betätigungsstellung gestellt, wodurch dieser an der Stellscheibe 21 der Hülse 12 angreift und diese beim Längsverschieben der Klemmbacken 16, 16a durch den dritten Hydraulikzylinder mitnimmt. Hierdurch kann dann auch das andere Ende des Doppelgestänges auf den Aufnahmedorn 11 aufgesteckt und durch eine abermals durch den dritten Hydraulikzylinder 17 ausgelöste Rückbewegung in Richtung auf den Aufnahmedorn 11 über diesen bis auf Anschlag gezogen werden. Das Innengestänge 9 ist damit zwischen Aufnahmedorn 11 und Hülse 12 gelagert, während das Außengestänge 10 nur an der Seite des Aufnahmedorns 11 aufliegt.The insertion of a telescoping double rod into the drill rod holder is done in reverse order. The double rod section is first inserted into the sleeve 12 by the jaws 16, 16a of the loading unit 15 during a longitudinal movement caused by the third hydraulic cylinder 17. The driving lever 20 is put back into its actuating position by the fourth hydraulic cylinder 19, whereby this turns on the adjusting disk 21 engages the sleeve 12 and takes it with the longitudinal displacement of the jaws 16, 16a by the third hydraulic cylinder. As a result, the other end of the double linkage can then be plugged onto the holding mandrel 11 and pulled back again towards the holding mandrel 11 by means of a return movement triggered by the third hydraulic cylinder 17. The inner rod 9 is thus mounted between the mandrel 11 and the sleeve 12, while the outer rod 10 rests only on the side of the mandrel 11.

An dem dem Bohrloch zugewandten Längsende der Bohrlafette 6 sind drei Klemmzangen 22,23,24 angeordnet. Die innere und äussere Klemmzange 24 und 22 sind mittels seitlich angeordneter Hydraulikzylinder 32 (Fig. 2) um die Bohrachse schwenkbar. Zwei Kraftdrehköpfe 25 und 26 sind auf Schlitten 27,28,29 auf der Bohrlafette 6 verfahrbar. Der dem Bohrloch zugewandte innere Kraftdrehkopf 26 betätigt das Außengestänge des Doppelgestängeschusses, während der äußere Kraftdrehkopf 25 das Innengestänge des Doppelgestängeschusses betätigt.At the longitudinal end of the drill carriage 6 facing the borehole, three clamping pliers 22, 23, 24 are arranged. The inner and outer clamping pliers 24 and 22 can be pivoted about the drilling axis by means of laterally arranged hydraulic cylinders 32 (FIG. 2). Two power heads 25 and 26 can be moved on carriages 27, 28, 29 on the drilling carriage 6. The inner power turret 26 facing the borehole actuates the outer linkage of the double rod section, while the outer power turret 25 actuates the inner linkage of the double rod section.

Die Schlittenanordnung 27,28,29 zum Tragen der Kraftdrehköpfe 25, 26 ist in Fig. 3 als Schnitt III-III aus Fig. 1 dargestellt.The carriage arrangement 27, 28, 29 for carrying the power rotary heads 25, 26 is shown in FIG. 3 as section III-III from FIG. 1.

Der Kraftdrehkopf 26 zum Abbohren und Ziehen des Außengestänges ist auf dem inneren Schlitten 27 angeordnet und auf diesem durch einen nicht dargestellten Antriebsmechanismus (z.B. einen Endlos-Kettenantrieb) an der Bohrlafette 6 verfahrbar. Der Kraftdrehkopf 25 zum Abbohren und Ziehen von Innengestängen ist auf dem äußeren Schlitten 29 angeordnet. Dieser ist mit einem Verbindungschlitten 28 über einen fünften Hydraulikzylinder 34 verbunden und an der Bohrlafette 6 festlegbar. Über den Verbindungsschlitten 28 kann der äußere Schlitten 29 und der innere Schlitten 27 aneinander an- und voneinander abgekoppelt werden. Hierfür ist an dem Verbindungsschlitten 28 eine Rastklinke 36 vorgesehen, die zum Hintergreifen eines Abschnitts des inneren Schlittens 27 hydraulisch 35 betätigbar ist. Wenn der innere und der äußere Schlitten 27 und 29 über den Verbindungsschlitten 28 aneinander angekoppelt sind, läßt sich ihr Abstand voneinander über den fünften Hydraulikzylinder 34 verstellen. Hierdurch läßt sich das Innengestänge gegenüber dem Außengestänge verschieben. Im angekoppelten Zustand bilden die Schlitten 27,28,29 einen Gesamtschlitten 33, der über den inneren Schlitten 27 an der Bohrlafette 6 verfahrbar ist.The power turret 26 for drilling and pulling the outer linkage is arranged on the inner slide 27 and can be moved on the slide 6 by a drive mechanism (not shown) (for example an endless chain drive). The power turret 25 for drilling and pulling inner rods is arranged on the outer slide 29. This is connected to a connecting slide 28 via a fifth hydraulic cylinder 34 and can be fixed on the drill carriage 6. The outer slide 29 and the inner slide 27 can be coupled to and uncoupled from one another via the connecting slide 28. For this purpose, a latching pawl 36 is provided on the connecting carriage 28, which can be actuated hydraulically 35 for engaging behind a section of the inner carriage 27. If the inner and outer sled 27 and 29 are coupled to one another via the connecting slide 28, their distance from one another can be adjusted via the fifth hydraulic cylinder 34. As a result, the inner linkage can be moved relative to the outer linkage. In the coupled state, the carriages 27, 28, 29 form a whole carriage 33, which can be moved on the drill carriage 6 via the inner carriage 27.

Nachfolgend wird die Wirkungsweise des Ankerbohrgeräts beim Abbohren und Ziehen von Doppelgestängeschüssen beschrieben.The mode of operation of the anchor drilling machine when drilling and pulling double rod sections is described below.

Das abgebohrte Doppelgestänge wird während eines Gestängewechsels durch die dem Bohrloch zugewandten äußeren beiden Klemmzangen 22 und 23 gehalten. Das in die Bohrlafette 6 eingeführte Doppelgestänge wird zuerst in Richtung Bohrloch verfahren, bis das Außengestänge in der konisch ausgebildeten Klemmzange 24 geführt ist.The drilled double rod is held during a rod change by the outer two clamping pliers 22 and 23 facing the borehole. The double rod inserted into the drill carriage 6 is first moved in the direction of the borehole until the outer rod is guided in the conical clamping tongs 24.

Daraufhin wird das Innengestänge mit dem zugehörigen Kraftdrehkopf 25 verbunden. Die Klemmbacke 16a für das Innengestänge wird separat gelöst und das Außengestänge mit dem Kraftdrehkopf 26 verbunden. Die Beschickungseinrichtung 15 gibt nun den Doppelgestängeschuß frei und wird in eine Ruheposition gefahren.The inner linkage is then connected to the associated power head 25. The clamping jaw 16a for the inner linkage is released separately and the outer linkage is connected to the power turret 26. The loading device 15 now releases the double rod section and is moved into a rest position.

Durch den fünften Hydraulikzylinder 34 werden die beiden Kraftdrehköpfe 25 und 26 so zueinander verstellt, daß das Innengestänge aus dem Außengestänge herausragt. Das herausragende Innengestänge wird gegen die konisch ausgebildete mittlere Klemmzange 23 gefahren, welche ein abgebohrtes Innengestänge hält und das in der Bohrlafette 6 befindliche Innengestänge wird mittels des zugehörigen Kraftdrehkopfes 25 mit dem abgebohrten Innengestänge verschraubt. Nach dem Verschrauben wird die mittlere Klemmzange 23 geöffnet und der innere Kraftdrehkopf 26 fährt mit dem Außengestänge gegen die äußere, ebenfalls konisch ausgebildete Klemmzange 22, die ein abgebohrtes Außengestänge hält. Durch den inneren Kraftdrehkopf 26 wird nun das in der Bohrlafette 6 befindliche Außengestänge mit dem abgebohrten Außengestänge verschraubt. Nun ist der in der Bohrlafette 6 befindliche Doppelgestängeschuß mit dem abgebohrten Doppelgestänge verbunden und der Abbohrvorgang kann beginnen.By means of the fifth hydraulic cylinder 34, the two power heads 25 and 26 are adjusted relative to one another in such a way that the inner linkage protrudes from the outer linkage. The protruding inner rod is moved against the conical middle clamp 23, which holds a drilled inner rod and the inner rod located in the drill carriage 6 is screwed to the drilled inner rod by means of the associated power turret 25. After screwing, the middle clamp 23 is opened and the inner power head 26 moves the outer linkage against the outer, also conical clamp 22, which holds a drilled outer linkage. The inner linkage in the drill carriage 6 is now screwed to the drilled outside linkage by the inner power turret 26. Now is the double rod section located in the drill carriage 6 connected to the drilled double rod and the drilling process can begin.

Der Entnahmevorgang eines abgebohrten Doppelgestängeschusses erfolgt in umgekehrter Reihenfolge.The removal process of a double-rod section that has been drilled is carried out in the reverse order.

Mit dem Ankerbohrgerät 1 ist es auch möglich, nur ein Innengestänge separat zum Einbau eines Ankers in einer verrohrten Bohrung zu entnehmen. Dabei wird das abgebohrte Außengestänge durch die äußere Klemmzange 22 und die Innengestänge durch die beiden weiter innen befindlichen Klemmzangen 23 und 24 gehalten, wobei sich die Verbindungsstelle der Innengestänge zwischen den Klemmzangen 23 und 24 befindet. Durch Verschwenken der inneren Klemmzange 24 relativ zur mittleren Klemmzange 23 werden die Innengestänge aufgebrochen bzw. gelöst. Nach dem Ablösen wird das Innengestänge im Gestängemagazin 8 abgelegt und das nächste Innengestänge kann mit dem Kraftdrehkopf 25 in die Bohrlafette gezogen werden. Nach dem Ankereinbau kann auch das Außengestänge gezogen werden. Hierfür wird zuerst immer ein Innengestänge als Abstützelement aus dem Gestängemagazin 8 geholt und am zugehörigen äußeren Kraftdrehkopf 25 für das Innengestänge befestigt. Zum Ziehen eines Außengestänges nach erfolgtem Ankereinbau wird der Kraftdrehkopf 26 an das Außengestänge herangefahren. Dazu muß der Außengestängeschlitten 27 vom Innengestängeschlitten 29 über den Verschiebungsschlitten 28 entkoppelt werden. Gleichzeitig mit dieser Entkoppelung wird die Einheit aus Verschiebungsschlitten 28 und dem inneren Schlitten 29 auf der Bohrlafette 6 festgelegt. Hierdurch wird das Innengestänge in einer definierten Position festgehalten. Der Anker wird daher beim Ziehen des Außengestänges über das in der Bohrlafette 6 befindliche Innengestänge gegen den auf den festgelegten Innengestängeschlitten 29 befindlichen Kraftdrehkopf 25 abgestützt und kann somit beim Ziehen des Außengestänges nicht gelockert werden.With the anchor drilling device 1, it is also possible to remove only one inner rod separately for installing an anchor in a cased bore. The drilled outer rod is held by the outer clamp 22 and the inner rod by the two clamps 23 and 24 located further inside, the connection point of the inner rod being between the clamps 23 and 24. The inner rods are broken or released by pivoting the inner clamping pliers 24 relative to the central clamping pliers 23. After detaching, the inner rod is placed in the rod magazine 8 and the next inner rod can be pulled into the drill carriage with the power turret 25. After installing the anchor, the outer linkage can also be pulled. For this purpose, an inner linkage is always first taken as a support element from the linkage magazine 8 and attached to the associated outer power turret 25 for the inner linkage. In order to pull an outer linkage after the anchor has been installed, the drive head 26 is moved up to the outer linkage. For this purpose, the outer linkage slide 27 must be decoupled from the inner linkage slide 29 via the displacement slide 28. Simultaneously with this decoupling, the unit comprising the displacement slide 28 and the inner slide 29 is fixed on the drill carriage 6. As a result, the inner rod is held in a defined position. The anchor is therefore supported when pulling the outer rod over the inner rod located in the drill carriage 6 against the rotary head 25 located on the fixed inner rod carriage 29 and can therefore not be loosened when pulling the outer rod.

Das Herausziehen des eingebauten Ankers kann durch den festlegbaren Innengestängeschlitten 29 unterstützt werden. Mittels eines Aufsatzes am Kraftdrehkopf 25 für das Innengestänge ist es möglich, das Außengestänge gegen Wasser beim Ankereinbau abzudichten.
Mit dem Ankerbohrgerät können in bekannter Weise auch Einfachgestänge abgebohrt und gezogen werden.Pulling out the built-in anchor can be supported by the lockable inner rod slide 29. Using an attachment on the power turret 25 for the inner linkage, it is possible to seal the outer linkage against water when installing the anchor.
With the anchor drilling device, simple rods can also be drilled and pulled in a known manner.

Claims (16)

1. Method for drilling and pulling double rods having an inner rod (9) and an outer rod (10), in which the drilling and pulling of the rod takes place with the aid of at least one power swivel head (25,26) displaceable on a drill mount (6) and prior to the pulling of the outer rod (10), the inner rod (9) is pulled and the tie rod fitted, characterized in that subsequently the fitted tie rod is secured against pulling out by a support member, preferably the inner rod (9), that with the tie rod fixed the outer rod (10) is pulled over the inner rod (9) or the support member and that the outer rod (10) and support member are jointly set down.
2. Tie rod drill suitable for performing the method according to claim 1 with a drill cradle (1), a carrier (2) located thereon for receiving at least one drill mount (6), at least one power swivel head (25,26) displaceable on the drill mount for operating a drill rod (9,10), at least one clamping tong located on the drill mount side facing the drill hole for screwing down and releasing the drill rods (9,10), at least one rod magazine with several drilling rod mounting supports and at least one loading mechanism (15) for transferring a drilling rod (9,10) from the rod magazine (8) into the drill mount (6) and vice versa, characterized in that each drilling rod mounting support (11,12) of the rod magazine (8) has for receiving a double rod part comprising an inner rod (9) and an outer rod (10) at least one holding element (11,13) for the inner rod (9) and at least one holding element (12,14) for the outer rod (10), that the loading mechanism (15) has at least two grippers (16,16a) for the inner rod (9) and/or for the outer rod (10), that at least one power swivel head (25) is provided for the inner rod (9) and at least one power swivel head (26) for the outer rod (10), which are displaceable relative to one another on the drill mount (6) and that several and in particular three clamping tongs (22,23,24) are provided for holding and rotating the rod (9,10).
3. Tie rod drill according to claim 2, characterized in that the reciprocal spacing of the holding elements (11,12 or 13,14) is adjustable.
4. Tie rod drill according to claims 2 or 3, characterized in that at least one gripper (16,16a) of the loading mechanism (15) is adjustable in the longitudinal direction of the drill mount (6).
5. Tie rod drill according to claim 4, characterized in that the grippers (16,16a) of the loading mechanism (15) are operable independen tly of one another.
6. Tie rod drill according to claims 3 to 5, characterized in that the part of the loading mechanism (15) connected to the displaceable gripper (16,16a) is constructed as an operable (19) adjusting element (20) for adjusting at least one holding element (12,13).
7. Tie rod drill according to one of the claims 2 to 6, characterized in that the rod magazine (8) is constructed as a pitch circular magazine or as a revolving magazine.
8. Tie rod drill according to one of the claims 2 to 7, characterized in that in each case one power swivel head (25,26) is placed on a slide (27,28) movable along the drill mount (6).
9. Tie rod drill according to claim 8, characterized in that the slide (27) with the power swivel head (26) of the outer tool is movable along the drill mount (6) and the slide (29) of the power swivel head (25) of the inner rod can be fired to or movable on the drill mount (6).
10. Tie rod drill according to claims 8 or 9, characterized in that the slides (27,29) can be coupled to and from one another.
11. Tie rod drill according to claim 10, characterized in that the spacing between the coupled together slides (27,29) is adjustable.
12. Tie rod drill according to one of the claims 8 to 11, characterized in that the slides (27,29) are coupled by means of a connecting slide (28) to an overall slide (33), the slide (29) with the power swivel head (25) of the inner tool being connected by a hydraulic cylinder (34) to the connecting slide (28) with a settable spacing and in which the connecting slide (28) has a mechanism (35,36) for coupling to the slide (27) of the power swivel head (26) of the outer rod.
13. Tie rod drill according to one of the claims 2 to 12, characterized in that at least one clamping tong (22,24) can be pivoted about a drilling axis relative to a further clamping tong (23).
14. Tie rod drill according to one of the claims 2 to 13, characterized in that on the substantially vertically upwardly directed carrier (2) is provided a reception slide (3) movable thereon for receiving the drill mount (6).
15. Tie rod drill according to claim 14, characterized in that the drill mount (6) is mounted in rotary manner on the reception slide (3), the angle between the drill mount (6) and the reception slide (3) being adjustable by means of a hydraulic operating cylinder (5).
16. Tie rod drill according to claim 15, characterized in that the adjustable angular range is ± 97°.
EP90100953A 1989-01-20 1990-01-17 Method of pulling outer tubings Expired - Lifetime EP0379187B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100953T ATE76459T1 (en) 1989-01-20 1990-01-17 PROCEDURE FOR PULLING OUTSIDE RODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3901664 1989-01-20
DE3901664A DE3901664A1 (en) 1989-01-20 1989-01-20 METHOD FOR DRAWING EXTERNAL RODS

Publications (2)

Publication Number Publication Date
EP0379187A1 EP0379187A1 (en) 1990-07-25
EP0379187B1 true EP0379187B1 (en) 1992-05-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100953A Expired - Lifetime EP0379187B1 (en) 1989-01-20 1990-01-17 Method of pulling outer tubings

Country Status (6)

Country Link
EP (1) EP0379187B1 (en)
JP (1) JPH02279895A (en)
KR (1) KR950014369B1 (en)
AT (1) ATE76459T1 (en)
DE (2) DE3901664A1 (en)
PT (1) PT92887A (en)

Cited By (1)

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JPH02279895A (en) 1990-11-15
PT92887A (en) 1991-09-13
KR900011957A (en) 1990-08-02
DE59000127D1 (en) 1992-06-25
DE3901664C2 (en) 1991-02-07
KR950014369B1 (en) 1995-11-25
EP0379187A1 (en) 1990-07-25
DE3901664A1 (en) 1990-07-26
ATE76459T1 (en) 1992-06-15

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