EP0860580B1 - Apparatus for handling drill rods - Google Patents

Description

The invention relates to a device for handling drill pipes, drill rods or the like. Drilling elements on a drilling device for drilling holes in the ground, rock or rock, especially when removing the drilling elements from a magazine, set in the working position and pull and return the drilling elements into the magazine after the drilling process has been carried out a telescopically movable gripper arm, at its free, front end a gripper for the drilling elements is arranged, the mouth opening after is arranged at the front in the direction of movement of the gripper arm. Such Device for handling drilling elements is from DE-A-37 38 116 known.

Drilling equipment for making holes in various substrates are known. They are used in particular to anchor grouting anchors in the ground, To put rock or rock. For this purpose, the known drilling devices consist of a caterpillar vehicle with a carriage on articulated arms in all directions is articulated movably. A drill drive can be moved axially on the carriage Example a rotary / impact drive, arranged with which the individual drilling elements be coupled. The coupling usually takes place with screw connections, through which the individual drilling elements as part of the advance of the entire drill string are interconnected. The handling of the individual drilling elements both when setting, to carry out the drilling process as well as when pulling the drillstrings poses an extraordinary problem characterized in that the individual drilling elements depending on their length have significant weights that are positioned, held and on the drill must be screwed or loosened from each other again and transported away Need to become. When it comes to various drilling methods, it also comes to make it more difficult to work with nested drill strings, for example for overlay drilling and double-head drilling, for the one inner drill pipe of one Outer drill pipe is surrounded concentrically with a distance. For every shot therefore arrange two drilling elements one inside the other towards the drilling rig transport, via two threaded connections at the top and bottom with the To connect the drill drive and the drill string already set and is after Carrying out the turning / percussion drilling process in the reverse way Pull the drillstrings.

Different auxiliary machines have been designed to handle to simplify the drilling elements. It is known from EP 0 565 502 to arrange a magazine for the drilling elements parallel to the carriage mount and this mechanically out of the magazine by means of a movable Bring the gripper into the drilling position so that there the coupling with the drill drive on the one hand and the one already in the hole to be drilled Drill pipe on the other hand can be made. The magazine is as Box magazine trained, has several storage spaces for different inner and outer tubes and extends parallel to the carriage of the Drilling device with which the magazine is firmly connected.

The handling device consists of a magazine attached to the vertically towering telescopically retractable and extendable posts, to which a gripper tree is attached in a collar-like manner, which is also telescopic is extendable and both the magazine area and the work area of the Can run over the gun carriage. On the outer, extendable part of the A gripper claw is provided in cooperation with an abutment is designed to drill a drill pipe out of the magazine grasping and holding and operating the telescopic extendable post and gripper in the drilling position on the carriage of the To spend drilling rig.

There is a separate one for handling inner drill pipes scissor-shaped gripper provided.

A disadvantage of the known handling device that it as integrated part of the magazine is designed for the drilling elements and therefore one-sided a significant shift of focus next to the carriage of the drilling rig generated in order to maintain stability and movability the drill with other, additional means balanced must become. The handling device is technically complex and heavy and performs complex movements through the different levels and at right angles to each other arranged telescope elements. there leads the claw tree, which projects freely over the entire movement path Stability problems, since the load at its free end with a long lever arm is arranged and coped with this long travel and transport routes Need to become. Another disadvantage is that the gripper is not for Support for loosening the screw connections is provided and also has too little clamping effect to secure the individual drilling elements to be released from the drill drive without manual help.

From DE-A 41 26 919 is a drill with a magazine for the drill pipe known in which the magazine revolver head-shaped and around its Center axis is rotatable. In this way, the magazine can cover the circumference take several shots distributed, which are removable from the outside. Around carry out the transport to the drilling position on the mount of the drilling rig, is the magazine from an external supply layer above one Swivel drive around a swivel axis inwards into the working position pivotable, in which the drill drive of the carriage of the drill aligned, assigned shot of the drill pipe can take. To the magazine swings in again when the assigned shot is taken over the stock level back to the outside.

To connect the drill drive with the one in the working position To be able to perform a shot of the drill pipe functionally reliable Magazine a locking device that is provided, which is in the working position keep the shot of the drill string in place, so that the drill drive is connected to this shot by screwing can be. However, the locking device is not a handling device represents, but only ensures that the respective drilling element in the Working position does not twist when the drill drive with the upper one End of the drilling element is screwed.

In view of this prior art, the invention is based on the object , while avoiding the abovementioned disadvantages, of creating a handling device which is structurally simple and is both capable of carrying out the transport of the drilling elements in a stable manner and also of the release process by means of high clamping forces without manual intervention, ie fully automated.

The object is achieved in that the gripper from a around a central pivot bearing arranged in the drilling plane Upper pliers and lower pliers exist, each with an outer cone surface are provided, on each of which a clamp housing with a counter cone axially, preferably with a hydraulic cylinder, slidable for the Closing process is arranged and the spring-loaded towards the opening are. This can result in surprisingly high clamping forces on the drilling element due to the existing positive connections of the gripping elements with simple and robust mechanics. It can be useful to the work surfaces of the gripper with clamping inserts assemble that are easy to replace and therefore ready for operation ensure the handling device over a long service life. It is also advantageously achieved that the Handling device very compact, light and structurally simple can be built up and just a simple linear movement to Capture, transport, position and connect the drilling elements in executes the drilling level with the drill drive.

The telescopically movable gripper arm of the handling device according to the invention consists advantageously of a in an outer housing a hydraulic shift cylinder telescopically extendable and retractable Inner housing, the at the free front end of the displacement cylinder Gripper is articulated and in between the gripper and the inner housing opposite arrangement, the terminal housing with counter cone axially an actuating link with a hydraulic cylinder connected to it are slidably arranged. With this compact arrangement extremely high strength and performance achieved so that Drilling elements of 120 kg and more weight easy to handle and in their Position can be fixed by the handling device.

To make the handling device different to the different circumstances According to a further embodiment, it is possible to adapt drilling devices provided the invention, the outer housing on a track the mounting bracket using a hydraulic cylinder in the drilling plane axially movable to store, so that even larger travel distances consistently small length dimensions of the handling device and constant telescopic travel distance of the gripper arm can be mastered can.

In addition, it can be provided the fastening bracket with the handling device to be arranged pivotably on the carriage mast in order to Do not use a small transport width by folding in on the side Ensure the rig of the drilling rig. This is preferably a Double-pin joint bearing used.

The handling device according to the invention is proposed on the drilling device itself on the opposite of the magazine for the drilling elements Arrange side of the carriage in the drilling plane, so that a good Weight distribution is achieved and with a simple linear movement of the telescopically movable gripper arm removed the drilling elements from the magazine, can be transported to the center of the drill on the carriage the drill drive can be connected and the gripper arm in its Further movement linearly returns to its starting position, with the Pull the drilling elements the other way round after completion of the borehole Movement process into the magazine is performed linear again. As Magazine is a drum magazine, also called revolver magazine, especially advantageous.

Should retrofit existing drilling rigs with the invention Given handling device another magazine arrangement can also be provided, the handling device in their In addition, the assembly must be pivoted to ensure that each known magazine arrangement for the handling device is accessible.

However, the handling device of the invention is preferred combined with a revolver magazine, which is the preferred arrangement of magazine and handling device in the drilling plane on opposite Side of the carriage and linear transport routes enabled. For enlargement The variability can be a double gripper arrangement for different Diameter (small / large, for example, when overlay drilling) Drilling elements may be provided.

Fig. 1

Eine Seitenansicht eines Bohrgerätes, insbesondere zum Rammbohren, schematisch;

Fig. 2

eine Seitenansicht eines Bohrgerätes, insbesondere zum Doppelkopfbohren, schematisch;

Fig. 3

das Bohrgerät der Fig. 1 in Seitenansicht mit um 90° verdrehter Lafette;

Fig. 4

eine vergrößerte Seitenansicht eines Trommelmagazins mit einer Handhabungsvorrichtung als Teil eines Bohrgerätes in der Lafettenstellung entsprechend Fig. 2 der Zeichnung für Doppelkopfbohren;

Fig. 5

eine Darstellung entsprechend Fig. 4 mit der Handhabungsvorrichtung in Entnahmeposition am Magazin für Außenrohre;

Fig. 6

eine Darstellung entsprechend Fig. 5 in der Entnahmeposition für Innengestänge;

Fig. 7

die Handhabungsvorrichtung in Schnittdarstellung;

Fig. 8

einen Greifer der Handhabungsvorrichtung und

Fig. 9

eine Draufsicht auf eine Doppel-Bolzen-Gelenklagerung der Handhabungsvorrichtung an der Lafette des Bohrgerätes.

Further details, features and advantages of the subject matter of the invention result from the following description of the accompanying drawing, in which a handling device according to the invention is shown schematically. The drawing shows:

Fig. 1

A side view of a drill, especially for ramming, schematically;

Fig. 2

a side view of a drilling device, in particular for double-head drilling, schematically;

Fig. 3

1 in a side view with the mount rotated by 90 °;

Fig. 4

an enlarged side view of a drum magazine with a handling device as part of a drill in the mount position according to Figure 2 of the drawing for double-head drilling.

Fig. 5

a representation corresponding to Figure 4 with the handling device in the removal position on the magazine for outer tubes.

Fig. 6

a representation corresponding to Figure 5 in the removal position for inner rods.

Fig. 7

the handling device in a sectional view;

Fig. 8

a gripper of the handling device and

Fig. 9

a plan view of a double-pin joint bearing of the handling device on the carriage of the drill.

The drill 1 shown in the drawing is for drilling holes in various surfaces, such as soil, rock or rock. It is a crawler vehicle with a crawler track 2, on the Swivel column 3 via articulated arms 4, a swivel head 5 for the inclination adjustment and a carriage 6 a carriage 7 in all directions is articulated. The one that can be raised and lowered as well as all spatial Axle-movable carriage 7 is hydraulically driven by a motor-hydraulic unit 8 driven. On the carriage 7 is axially movable in corresponding Guides a drill drive 9 arranged, for example, a Rotary / impact drive or a duplex or double head drive can be. there the drive head of the drill drive 9 has a threaded connection 10 for the Coupling with the individual shots of the one to be placed or drawn Drill string on. Drill rods and / or drill pipes are found as drilling elements 11 Use. As individual shots, these become the drill string composed of the drill drive 9 by turning and / or Beating is driven into the underground, being with the duplex drive Borehole piping and borehole rods rotated and / or simultaneously be beaten.

In the front end 12 of the carriage 7 in the drawing is a crushing, clamping and Guide device 13 is provided for the drilling elements, Unscrew and close the threaded connections, the shots of the Drill pipe and the downhole tubing is used.

On the one hand, according to FIG. 3 of the drawing of the left side of the carriage 7 of the drilling device 1 is a magazine 14 for the drilling elements 11 on the carriage attached, which is designed as a drum magazine. The magazine 14 is by means of a drive motor 15 about its central axis 16, which is in the drilling plane located laterally of the drilling axis 17, rotatable around the drilling elements in succession in a lying in the drilling plane, facing the drilling axis 17 To be able to bring removal position. The removal itself takes place using a Handling device 18 instead, which according to FIG. 3 of the drawing on the opposite, right side of the carriage 7 in the drilling plane 19 is. With the handling device 18, a drilling element 11 can Magazine fully mechanized and removed without manual support linear movement into the working position, namely the drilling axis 17, can be spent, the drilling element 11 there by the Threaded connection 10 of the drill drive 9 are added and by Moving towards the front end 12 of the carriage to already set Drilling elements are brought up, there via a threaded connection with the last can be connected and then the drilling process itself be performed. During the process of the drill drive 9 with the Drilling element 11 performs handling tasks 18, while in the drilling process itself in the Fig. 3 of the drawing shown starting position remains, as further below will be described.

The drill 20 shown in Fig. 2 of the drawing differs from that Drill 1 described above in that a front rotary drive 21 for Outer tubes and a rear rotary drive 22 or hydraulic hammer for one Inner rods are provided and accordingly a handling device 23 for the outer tubes and a separate handling device 24 are available for the inner rods to get out of the magazine 14 out the handling of the different drilling elements in an optimized way to be able to perform. It should be noted that in principle also with a Handling device 18 could be worked at this point. The detailed structure of the handling devices 18, 23 and 24 results from 4, 5, 6 and 7 of the drawing, the different operating states, namely the idle state according to FIG. 4 of the drawing, the removal state for 5 of the drawing and the removal state for Show inner linkage according to FIG. 6 of the drawing. Constructive details themselves result from the enlarged sectional view of the Handling device in Fig. 7, to which reference is first made below is taken.

7 of the drawing, the handling device 18 or 23, 24, from a box-shaped outer housing 25, which is open to the front telescopically to hold an inner housing 26 arranged therein and respectively. A hydraulic displacement unit is used to displace the inner housing 26 27 provided, the piston rod 28 on the outer housing 25 is fixed and the cylinder 29 fixed to the bottom of the inner housing 26 is connected so that the relative movement of this two parts to each other in the event of actuation of the hydraulics in the sense of Forward or backward displacement of the inner housing 26 affects. At the there is a pivot bearing 30 for one at the front end of the hydraulic cylinder 29 scissor-like gripper 31, the at least one pivotable about the pivot bearing 30 Upper pliers 32 and lower pliers 33. In the described Embodiment double pliers are provided. The mouth opening 34 of the The gripper 31 is forward in the direction of movement of the inner housing 26 together with the outer housing 25 a telescopically movable Gripper arm represented with gripper, directed. This will make a linear Forward or backward movement of the handling device in the Drilling level for receiving, positioning, connecting and guiding the Drilling elements for the drilling process and for pulling the drilling elements with the difficult breaking and loosening of the threaded connections fully automatically enables in a simple manner.

A particularly high clamping effect of the gripper 31 is achieved by Upper pliers 32 and lower pliers 33 each have an outer conical surface 35, 36 are, on which a terminal housing with counter cone 37, 38 form-fitting are arranged to the inner housing 26. The terminal box with counter cone 37 and 38 is arranged behind and welded to it Actuating link 39 axially displaceable by means of a hydraulic cylinder 40, whereby with the outer cone surfaces 35, 36 and the terminal housing Counter cone 37, 38 the upper pliers 32 and lower pliers 33 by one open and close opposite movement. In Fig. 7 the Drawing is the closed position. To open the gripper 31 the hydraulic cylinder 40 actuated, the piston rod with the Actuating link 39 is connected. With the withdrawal of the Actuating link 39 to the rear are designed according to the cone the closing forces are gradually withdrawn and the Open the upper pliers 32 and lower pliers 33 in that one in FIG. 7 the spring load, not shown, is effective in the opening direction becomes. Conversely, movement of the piston rod of the hydraulic cylinder creates 40 forward over the actuating link 39 and the cone design 37, 38 extremely high closing and holding forces in the in Fig. 7 of the drawing shown closed position of the gripper 31. Die Working surfaces of the gripper 31 are made of hardened clamping inserts 41 Equipped with materials that are easy to replace and ready for operation secure the handling device over a long service life.

The handling device 18 or 23 and 24 is shown in FIGS. 4, 5 and 6 of the drawing with its outer housing 25 slidably on a Guide track 42 of a mounting bracket 43 is arranged, which has a Double-pin joint bearing 44 is attached to the carriage 7. The postponement takes place by means of a hydraulic cylinder 45 and is such dimensioned so that they complement the extendibility of the telescopic gripper arm the handling device the entire path of movement in the drilling plane via the drilling axis 17 to the magazine 14 in the drilling plane 19 and back covered.

Fig. 4 shows the handling device in its starting position in Idle state with the inner housing 26 retracted and the terminal housing retracted with counter cone 37, 38 and consequently open gripper 31. An outer tube is located opposite in the drilling plane Drilling element 11 in removal position in magazine 14.

5 of the drawing shows the handling device 18 in the removal position with the outer casing 25 fully advanced as the position the piston rod of the hydraulic cylinder 45 illustrates, also completely extended inner housing 26, such as the position of the piston rod 28 of the hydraulic cylinder 29 illustrates, and with fully forward in the Closing position of the gripper 31 moved clamp housing with counter cone 37, 38, which also results from the extended piston rod of the Hydraulic cylinder 40 illuminated. In this position, the gripper 31 detects this Outer tube 11, which is in the removal position of the magazine 14 with the clamping inserts 41 of upper pliers and lower pliers with high Clamping forces and can now be removed by moving the Handling device can be made.

The same situation is shown in Fig. 6 of the drawing, in which the gripper 31 of the handling device 18 in the extended and exciting Condition for an inner rod of smaller diameter in the removal position is shown.

Further details on the design of the gripper are Fig. 8 of the drawing removable. From this it follows that the clamping inserts 41 with upper pliers and lower pliers of the gripper 31 screwed and therefore easily replaceable are. The spring 46 exerting the restoring force is indicated by dashed lines.

Fig. 9 of the drawing shows a plan view of the double-pin joint bearing 44, which makes it possible, after pulling a pin B ₁ , to pivot the entire fastening bracket 43 with the handling device 18 around the other pin B ₂ to the mount 7, so that when not in use to enable small transport width by folding in on the side.

The operation of the drilling device 1 with the magazine 14 and the handling device 18 is explained below with reference to the drawing:

At the start of a bore, the drilling elements 11 are in the drum magazine 14 arranged. The loading can depend on what is to be carried out Drilling processes either only drill pipes or only drill pipe or both Drill pipes as well as drill rods, such as according to FIG. 4, 5 and 6. A drilling element 11 is through the discharge opening is at the same time loading opening, parallel to the carriage in a first compartment of the Drum magazine 14 introduced. The drum is then turned through an angle 45 ° for eight compartments and an angle of 22.5 ° for sixteen Fan rotated about its central axis by means of the motor 15, so that next drilling element can be loaded. With an appropriate casing, which have a recess only at the loading / unloading opening the loaded pipes are secured against falling out. This will be successive Way filled the entire magazine. From the control station of the drilling rig the various motors and hydraulic cylinders are activated and over Control valves controlled.

In a first process, the first drilling element is removed 11 or the first drill pipe, the handling device 18 from the in Fig. 4 shown position in the removal position shown in FIG. 5 of the Draw the drawing or Fig. 6 of the drawing. That in the removal position located pipe or linkage (generally called drilling element 11) is from Gripper 31 gripped, held and in a linear backward movement in the drilling plane 19 in the drilling position, namely the drilling axis 17, parallel to Carriage 7 of the drill transported. As part of this whole Movement process is first the outer housing 25 in its foremost Move position, then, or overlap in motion, then via the actuation of the hydraulic cylinder 29, the inner housing 26 in its Move to the front position and then or already in an overlapping position Movement process of the grippers 31 by activating the cylinder 40 actuated, through which the terminal housing with counter cone 37, 38 to the front is extended and thereby the upper pliers 32 and lower pliers 33 around the axis of rotation 30 are closed until the drilling element 11 is firmly gripped is. Subsequently, the inner housing 26 is first shown in the drawing retracted right into the outer housing 25, which normally the Drilling position has already been reached for the drilling element. The gripper 31 remains in its closed clamping position.

In the next procedure, the drilling drive 9 is connected to the drilling element 11 moved up on the carriage 7 and the threaded connection 10 with the Drilling element 11 connected.

Is intended to perform a drilling process using an inner rod and an outer tube is worked, the first is first Shot of the inner rod gripped, transported in the drilling axis and is after connection to the drill drive 9 this on the carriage so far retracted that the movement path for the now following removal of the first shot of the external piping can take place. This is according to the performed in Fig. 2 of the drawing by the first operation with the handling device 24 for the inner rod is carried out and then with the handling device 23 for the outer tube of this is taken from the magazine 14 in an equivalent manner and is transported to the drilling position. Then the inner rod in the outer tube introduced by moving the drill drive 9 and the Thread connection also to the outer tube via a corresponding adapter manufactured. The drilling element or the drilling elements arranged one inside the other are now on the carriage forward to the one already in the borehole Move the drill string and use the drill drive 9 there with the already installed drill string firmly connected.

As part of the forward movement, the handling device is open Grippers remained in their position on the drilling axis 17 in order to To guide the drilling element during the forward movement. Then the Handling device in the starting position shown in Fig. 4 retracted and is ready for the next removal process.

Further drilling is carried out by actuating the rotary and / or impact drive of the Drill drive 9 performed. The drill drive is then with the help of Breaking, clamping and guiding device 13 of which is already in the borehole located drilling element 11 and at the right end of the carriage 7 in the Moved back to the starting position. Then a Removal of drilling elements, if necessary an inner drill pipe and outer Drilled pipes handled on the pipes already in the borehole screwed on and in this way successively finished the borehole.

After completion of the borehole, the interior becomes shot by shot Drill pipe dismantled. When pulling out the drill pipe the same process steps as down drilling, but in the opposite Order performed. To do this, the shots of the drill pipe pulled to the height of the magazine 14 with the drill drive 9, with the help of Rotating, clamping and guiding device 13 the top shot of the drill pipe then released from the drill string and unscrewed, the handling device 18 advanced to the drilling axis 17 and the gripper 31 actuated to Hold the drill pipe with high clamping force. The threaded connection 10 will solved by means of the drill drive 9. This is due to the high clamping forces for the first time possible purely by machine and without manual breaker. Then will the handling device 18 with the drill pipe in the position shown in FIG. 6 move, the drill string is arranged in the magazine 14 and by opening of the gripper 31 released. The handling device 18 moves into its starting position back, so that the inner shot in the same way Drill pipe can be removed, with a magazine rotation it is ensured that there is always an empty compartment for loading in the unloading / loading position is located.

After that, if necessary, the grout anchor to be placed in the still piped Drill hole has been installed, shot by shot also the outer piping dismantled, the work sequence already described repeated becomes.

It is noted that depending on the drilling process to be carried out and the method used Drilling device deviations in the functional sequence of the Handling device are conceivable without the scope of the invention leave. So sometimes with double pipe systems only parts of the Drilled hole and then the hole is only with the inner Drill pipe continued, resulting in a corresponding adjustment at Drilling and pulling the drilling elements with the handling device leads. The described device is suitable for a wide variety of drilling methods customizable, with only minor changes in the Functional sequence or possibly the equipment of the gripper 31 made must be without deviating from the principle of handling.

LIST OF REFERENCE NUMBERS

1

drill

2

crawler track

3

swing post

4

articulated arm

5

swivel head

6

mount carrier

7

gun carriage

8th

Motor-hydraulic unit

9

drill drive

10

threaded connection

11

drilling element

12

front end

13

Crushing, clamping, guiding device

14

magazine

15

drive motor

16

central axis

17

drilling axis

18

handling device

19

drilling plane

20

drill

21

front rotary drive

22

rear rotary drive

23

handling device

24

handling device

25

Outer housing gripper arm

26

Inner housing gripper arm

27

Hydraulic displacement unit

28

piston rod

29

cylinder

30

pivot bearing

31

grab

32

A nipper

33

lower nipper

34

opening

35

Outer cone surface

36

Outer cone surface

37

Terminal housing with counter cone

38

Terminal housing with counter cone

39

actuating ring

40

hydraulic cylinders

41

clamping insert

42

guideway

43

mounting bracket

44

Double-joint mounting bolts

45

hydraulic cylinders

46

Return spring

B ₁

bolt

B ₂

bolt

Claims (11)

1. Apparatus for handling drill pipes, drill rods or similar drill elements (11) at a drill rig (1, 20) for drilling holes in earth, stone or rock, in particular upon removing the drill elements (11) from a magazine (14), setting them in the working position and withdrawing and returning the drill elements (11) to the magazine (14) after carrying out the drilling operation, with a telescopically mobile gripping arm (25, 26), at the free, front end of which a gripper (31 ) for the drill elements (11) is disposed,
   the bit opening (34) of which is disposed to the front in the direction of movement of the gripping arm (25, 26), characterised in that the gripper (31 ) consists of top tongs (32) and bottom tongs (33), which can move about a central pivot bearing (30) disposed in the drill plane (19), each of which is provided with an outer cone surface (35, 36), at which a respective clamping housing with a counter-cone (37, 38) is disposed in an axially displaceable manner for the closing operation, and which are spring-loaded in the opening direction.
2. Apparatus according to Claim 1, characterised in that a hydraulic cylinder (40) is provided for actuation.
3. Apparatus according to Claim 1 or Claim 2, characterised in that the working surfaces of the gripper (31) are equipped with easily interchangeable clamping inserts (41).
4. Apparatus according to any one of Claims 1 to 3, characterised in that the gripping arm (25, 26) consists of an inner housing (26), which can be telescopically extended and retracted in an outer housing (25) by a hydraulic displacement unit (27), wherein the gripper (31) is articulated to the free front end of the displacement cylinder (29), and the clamping housing with counter-cone (37, 38) are disposed between the gripper (31) and the inner housing (26) in an opposite arrangement so as to be axially displaceable by way of an actuating link (39) with hydraulic cylinder (40) connected thereto.
5. Apparatus according to any one of Claims 1 to 4, characterised in that it is mounted such that it can travel axially in the drill plane on a guideway (42) of a mounting bracket (43) by means of a hydraulic cylinder (45).
6. Apparatus according to any one of Claims 1 to 5, characterised in that it is pivotably disposed at the carriage (7) of the drill rig (1, 20).
7. Apparatus according to Claim 6, characterised in that a double-pin swivel mounting (44) is provided.
8. Apparatus according to any one of Claims 1 to 7, characterised in that it is disposed at the drill rig in the drill plane on the side of the carriage (7) lying opposite the magazine (14).
9. Apparatus according to any one of Claims 1 to 8, characterised in that the magazine (14) is a drum magazine.
10. Apparatus according to any one of Claims 1 to 9, characterised in that it is mounted so as to be pivotable in its entirety into the vertical or into an inclined position.
11. Apparatus according to any one of Claims 1 to 10, characterised by a double gripper arrangement (23, 24) for handling double tubes with an outer tube and an inner tube.

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