EP1832710B1 - Device for loading a drilling installation and drilling apparatus - Google Patents

Abstract

The device has a rod magazine (1) having several receiving spaces (4) for inner tubes (31) and outer tubes (32) of a double rod. A manipulator (20) is provided for gripping and moving the tubes into and out of the rod magazine. The rod magazine is designed as a rotatable revolver magazine having double receiving spaces, which each have a retaining element for an outer tube and a further retaining element for an inner tube arranged inside the outer tube. An independent claim is included for a drilling apparatus.

Description

The invention relates to a drilling rig, in particular a burial or rock drilling apparatus, according to the preamble of claim 1. Such a drill includes, inter alia, a device for loading a drilling device of the drill with a double linkage, with a rod magazine, the multiple receptacles for inner tubes and outer tubes of the double rod has. The invention is characterized inter alia by a manipulator for gripping and method of the pipes in and out of the rod magazine.

A generic drill is from the JP 08-296389 A known.

Another device for feeding a drill with a drill string is for example from DE 101 08 696 B4 known. The known device has a respect to a carriage fixed rod magazine with a plurality of pipe cradles, in which the outer and inner tubes of the double rod can be added to each other plugged. The tubes are arranged part-ring around a longitudinal axis. For transporting the drill pipes between the magazine and a drill drive a gripper is provided, which is rotatable about the longitudinal axis of the magazine. In such a device individual storage positions can be covered and difficult to see by the operator, which can be unfavorable for manual operation.

Another device with a fixed, partially cylindrical magazine and a pivotable about the cylinder axis gripper is from the EP 0 379 187 A1 known.

The DE 198 10 707 A1 discloses a drill with a drum magazine, on the circumference of inner tubes and outer tubes of a double linkage are each arranged in groups next to each other. After DE 198 10 707 A1 a pinch roller arrangement is provided, with which an inner tube is moved axially out of the drum magazine. Subsequently, the inner tube is again lowered axially and thereby introduced into an adjacent outer tube. The combination of outer tube and inner tube is then pivoted into the drilling axis, where it is detected by a clamping pliers.

Another hinged magazine goes out of the US 5,215,153 out.

From the EP 0 860 582 B1 Another device for double head and overlay drilling is known. The known device has a drum magazine, in which the inner tubes and outer tubes are arranged at separate locations, in the radial direction one behind the other. In this case, a pulling and setting device is provided, with which initially the inner rod is removed from the magazine upwards, is positioned coaxially over the outer tube and then retracted into this. The two tubes are then moved together into the drilling axis.

Also from the EP 0 860 580 B1 a drilling device is known in which the inner tubes and outer tubes are stored separately. When drilling an inner tube is first used in the Boom axis transported and connected to the drill drive. Subsequently, the drill drive is moved back axially and transported the outer tube in the drilling position. Then, the inner tube is inserted into the outer tube by moving the drill drive and also the outer tube connected to the drill drive. Another rod magazine, which is intended for a separate storage of inner and outer tubes, goes out of the DE 103 41 437 A1 out.

The EP 0 565 502 B2 discloses a rock drilling machine with a box magazine in which pipe elements are arranged one above the other.

More box magazines are from the DE 198 30 447 A1 and the DE 299 03 909 U1 known.

The US 3,734,209 describes a drilling apparatus in which twin well links are stored side by side on a feed chute.

The object of the invention is to provide a drill, in particular an earth or rock drill, with a device for feeding a drilling device of the drill with a double rod, which ensures a particularly high reliability and reliability in a compact and simple design of the device.

The object is achieved by a drill with the features of claim 1. Preferred embodiments are given in the dependent claims.

In the device for feeding the drilling device according to the invention it is provided that the rod magazine as a rotatable Revolver magazine is formed with double receptacles, which each have a holding element for an outer tube and a further holding element for an inner tube arranged within the outer tube.

A basic idea of the invention can be seen in a design of a revolver magazine with double receptacles, which each allow a bearing of a tube pair consisting of an inner tube and an outer tube in the same place. According to the invention, the inner tubes and the outer tubes can be held in a nested position in the magazine. The tubes can thus be magazined in exactly the arrangement in which they are also in the double-tube drilling. As a result, the number of Umgreifprozesse required during the loading of the drilling device or magazining is reduced, which ensures a particularly reliable operation, in particular a particularly simple manipulator control, with a simple apparatus design. The reliability, especially in manipulator handling, is further improved by the fact that the double shots are not stationary but are provided on a rotatable turret magazine. This revolver magazine makes it possible to always spend the magazinierten Doppelgestängeschüsse located in the drilling at the same transfer position where they can be well seen by an operator and used in a particularly reliable manner by the manipulator and spent in the drilling axis.

A revolver magazine may in particular be understood to mean a magazine in which the receptacles and / or the tubes received are arranged around the axis of rotation of the magazine, the longitudinal axes of the tubes received being suitably parallel to the axis of rotation. For a particularly simple drive of the magazine, the axis of rotation preferably runs centrally with respect to the receptacles, in particular along a center axis of the rod magazine.

Preferably, the receptacles are arranged on a circle whose center is suitably on the axis of rotation of the rod magazine. The longitudinal axes of the tubes and the receptacles may lie on a cylinder jacket whose longitudinal axis coincides with the axis of rotation. Such an arrangement as a drum magazine is particularly compact.

A structurally particularly simple device is given by the fact that the rod magazine has a central axle tube, via which the rod magazine on at least one bearing point is stored. Preferably, the storage is provided via the central axle tube at least on the side facing away from the receptacles end side of the rod magazine. This type of storage allows particularly easy access to the magazine tubes. The linkage magazine can also be mounted several times on the central axle tube, wherein the central axle tube can in principle also be interrupted. It is particularly advantageous according to the invention that the rod magazine is interchangeable stored in the device. The interchangeability of the magazine makes it possible to quickly and easily convert the device to another linkage system.

It is advantageous for this that at least one bearing point of the linkage magazine is detachable. By releasable bearings, a replaceable magazine can be created in a particularly simple manner. The detachable bearing point can, for example, have two or more bearing shells, which can be detached from one another and closed again. In particular, a bearing shell can be provided pivotably with respect to another bearing shell. As a result, for example, a hinged bearing point can be created. The bearings suitably include plain or roller bearings.

Furthermore, it is advantageous according to the invention that the rod magazine is in several parts with a receiving part on which the receptacles are arranged, and a drive part, on which a magazine rotary drive is provided, is formed, wherein the receiving part is in particular releasably secured to the drive part. In this way, a divisible magazine can be created, in which the recordings including the tubes mounted therein can be removed from the drive part of the magazine and thus a particularly good handling is given. Preferably, the receiving part and the drive part are connected via a plug connection, which is releasable by axial movement in the direction of the magazine rotation axis and / or the longitudinal axis of the recorded drill pipes. In particular, a plug connection can be provided on the central axle tube. In order to achieve a power transmission between the drive part and attached receiving part, the connector is suitably rotatable, in particular as a positive connection formed.

For a particularly safe transport of the removed rod magazine, it is advantageous that a safety cover is provided, which is suitably frontally on the rod magazine, in particular the receiving part, placed and locked. As a result, the rod magazine including the magazine inner tubes and the outer tubes can be handled very safe. The securing cover is preferably provided on the side facing away from the receptacles end face of the drum magazine.

According to the invention, a carriage is provided, which serves to guide a drill drive of the double rod. The drill drive may be a single drive for simultaneously driving both linkages or consist of two separate drives, wherein the one or more drives can be designed both rotationally and rotationally. The handling of the device according to the invention is facilitated by the fact that the axis of rotation of the revolving magazine and / or the longitudinal axes of the receptacles are arranged at least approximately parallel to the carriage and / or to a drilling axis extending thereon. The transfer position on the revolver magazine is preferably at the same height as the drilling axis. In this case, only one translational movement is required when removing the tubes from the magazine. A particularly compact device is obtained in that the rod magazine is mounted on the carriage. A particularly simple design is given by the fact that at least one holding arm is provided, on which the linkage magazine, in particular on the central axle tube, is mounted on the carriage.

The recordings are suitably designed as slide-in holders, which release the tubes during axial displacement. For example, the holding element for the inner tube may have a retaining pin, on which the inner tube is plugged. The holding element for the outer tube may, for example, have a receiving bush and / or likewise a receiving mandrel. Suitably, the two holding elements of a double receptacle for a coaxial mounting of the outer tube and the inner tube are provided. In particular, if the recordings have sockets for holding the tubes, they can also be referred to as quivers.

Preferably, the inner tubes are stored in the rod magazine so that they protrude a piece of the surrounding outer tube. It is then possible with simple manipulator design to remove both tubes together from the magazine. If the inner tubes are the same length or shorter than the outer tubes, this can be provided to form the holding elements for the inner tubes with an axial offset relative to the holding elements for the outer tubes. Preferably, the holding elements have a first stop for the inner tube and a second stop for the outer tube, wherein the stops are axially offset from each other. Preferably, the stop for the inner tube is offset in the direction of the male tube and / or inside the magazine.

Advantageously, the manipulator has three axes of movement, one of which runs approximately parallel to the axis of rotation of the revolving magazine, the longitudinal axis of the carriage and / or the longitudinal axes of the receptacles. Suitably, the axes of motion are preferably orthogonal linear axes, thereby particularly compact dimensions of the device according to the invention are made possible. In principle, however, the axes of movement can also be rotational axes. A particularly robust and versatile arrangement is given by the fact that the manipulator has a manipulator arm which is displaceable on a longitudinal guide. The longitudinal guide is suitably provided on the carriage or part of this carriage. The manipulator arm is preferably telescopic, in particular in two directions of movement formed double telescopically.

A particularly fast and reliable operation of the device according to the invention is made possible in that the manipulator has at least two gripper tongs. The gripper tongs are actuated independently of each other according to the invention. Preferably, the gripper tongs are formed with a gripping area which comprises both the diameter of the inner tubes and the diameter of the outer tubes, so that each gripper tongs can grip both outer tubes and inner tubes. The two gripper tongs are preferably arranged in an axis running parallel to the carriage and / or to the drilling axis. Suitably, the two grippers are connected via a yoke, which is preferably provided on the end side on the manipulator. In particular, it can be provided to grasp the inner tube and the outer tube with separate gripping tongs when removing the tubes from the rod magazine. When inserting the tubes in the boom magazine both gripper tongs can be used for the same tube.

Preferably, according to the invention means are provided with which the rod magazine can be continuously positioned and / or locked. This allows the angular positions of the recordings, in particular the removal and / or loading position, to be infinitely positioned and locked.

The inner tubes may for example be smooth or formed as auger tubes. If auger tubes are used, it is advantageous if the gripper tongs have clamping shells that are wider than the extent of a helical pitch. As a result, a secure gripping operation can be ensured.

The charging device described above is inventively provided on a drill with a drilling device having a drill drive for double pipe drilling. Such drills can be equipped in a known manner with a chassis, various units and a control unit. The drilling device can be brought via an adjusting mechanism on the chassis in almost any position.

According to the invention it is provided that the drill drive is mounted on a carriage. The drill according to the invention is inter alia characterized in that the linkage magazine between the carriage and a first telescopic arm of the manipulator is arranged and that on the first telescopic arm, a second telescopic arm is slidably mounted with the gripper tongs. The manipulator and the revolver magazine can thus be arranged on one side of the carriage, so that on the opposite side of the carriage for an operator free access to the drill drive and the drill string is given. The manipulator is preferably mounted below the revolver magazine on the carriage. The approximately C-shaped manipulator 'thus surrounds the revolving magazine, resulting in a particularly compact arrangement.

Basically, the rod magazine according to the invention can be equipped with a single rod instead of a double rod become. The interchangeability of the linkage magazine can be regarded as an independent invention aspect.

In one method, provision may be made for tubes, which are arranged one inside the other, to be taken out of the rod magazine together and placed in a drilling axis and / or that the inner tubes and then the outer tubes of the double rod are first stored in the rod magazine when the double rod is being magazineed. Preferably, first the inner rod is completely magazined and then started with the magazining of the outer rod.

Fig. 1

Eine Seitenansicht (a) und eine Querschnittsansicht (b) einer erfindungsgemäßen Vorrichtung zur Durchführung des beschriebenen Verfahrens gemäß einer ersten Ausführungsform;

Fig. 2

Eine teilweise geschnittene Detailansicht des Manipulators aus Fig. 1 von der Seite;

Fig. 3

eine Querschnittsansicht der Vorrichtung aus Fig. 1 mit teilweise geschnittenem Manipulator bei anderem Betriebszustand des Manipulators;

Fig. 4

eine teilweise geschnittene Detailansicht einer Doppelaufnahme des Gestängemagazins aus Fig. 1 mit einem glatten Innenrohr;

Fig. 5

eine teilweise geschnittene Detailansicht einer Doppelaufnahme des Gestängemagazins aus Fig. 1 mit einem wendelbelegten Innenrohr;

Fig. 6 bis 8

die Vorrichtung aus Fig. 1 beim Zusammenfügen eines magazinierten Bohrgestänges in der Bohrachse entsprechend dem beschriebenen Verfahren in Seitenansicht (a) und Querschnittsansicht (b);

Fig. 9 bis 12

die Vorrichtung aus Fig. 1 beim Magazinieren des Bohrgestänges entsprechend dem erfindungsgemäßen Verfahren in Seitenansicht (a) und Querschnittsansicht (b);

Fig. 13

die Vorrichtung aus Fig. 1 bei aufgeklappter Magazinlagerung; und

Fig. 14

die Vorrichtung aus Fig. 1 bei geteiltem Magazin.

The invention will be explained in more detail with reference to preferred embodiments, which are shown schematically in the figures. In the figures show:

Fig. 1

A side view (a) and a cross-sectional view (b) of a device according to the invention for carrying out the described method according to a first embodiment;

Fig. 2

A partially cut detail view of the manipulator Fig. 1 of the page;

Fig. 3

a cross-sectional view of the device Fig. 1 with partially cut manipulator in other operating condition of the manipulator;

Fig. 4

a partially cut detail of a double recording of the rod magazine Fig. 1 with a smooth inner tube;

Fig. 5

a partially cut detail of a double recording of the rod magazine Fig. 1 with a helical inner tube;

Fig. 6 to 8

the device off Fig. 1 when assembling a magazin Bohrgestänges in the drilling axis according to the described method in side view (a) and cross-sectional view (b);

Fig. 9 to 12

the device off Fig. 1 during storage of the drill pipe according to the method according to the invention in side view (a) and cross-sectional view (b);

Fig. 13

the device off Fig. 1 with unfolded magazine storage; and

Fig. 14

the device off Fig. 1 with shared magazine.

An embodiment of a device according to the invention is in Fig. 1 shown. The device shown is part of a drill and has a carriage 6, on which a drill drive 8 is provided for driving a Doppelbohrgestänges displaced. On the foot side of the carriage 6 several clamping tongs 60 are provided for screwing and / or breaking and for holding the drill pipe.

The device has a rod magazine 1 designed as a revolver magazine. This rod magazine 1 is rotatably mounted about a rotation axis 2 relative to the carriage 6 and the drill drive 8. In the illustrated embodiment, the rod magazine 1 six receptacles 4, in each of which an outer tube 32 of the drill string and, centrally coaxially thereto, an inner tube 31 of the drill string is receivable. The receptacles 4 are arranged side by side along the circumference of the linkage magazine 1. They lie on a circle 80, the center of which lies on the axis of rotation 2 of the linkage magazine 1.

For rotatable mounting, the rod magazine 1 has a central axle tube 12, on which the individual receptacles 4 are fixed in a star shape. This axle tube 12 is mounted in a trained as a pivot bearing 13, which is provided on a support arm 18 of the carriage 6.

The trained as a double recordings 4 are in Fig. 4 shown in more detail. As in Fig. 4 can be seen, the receptacles 4 each have a retaining sleeve 42 through which a holding element for the outer tube 32 is formed. This retaining sleeve 42 may be formed for example in a sleeve. In the retaining sleeve 42, a retaining pin 41 is arranged, which projects from the bottom 44 of the retaining sleeve 42. This holding mandrel 41 forms a holding element for the inner tube 31. Holding mandrel 41 and holding bushing 42 are arranged coaxially. The retaining pin 41 has an annular stop 45 which is offset from the bottom 44 of the retaining sleeve 42 in the direction of the male pipe 31, ie towards the mandrel tip and bushing opening. The inner tube 31 is thus held offset relative to the outer tube 32 and protrudes from this on the side facing away from the receptacle 4.

As in Fig. 1 can be seen, a manipulator 20 is provided for moving the tubes 31, 32 between the boom magazine 1 and the drilling axis 9 extending along the carriage 6. This manipulator 20 is designed as a three-axis manipulator with three orthogonal linear axes of movement. As Fig. 1 and in detail also the FIGS. 2 and 3 can be seen, the manipulator 20 has a manipulator arm 24 which in the longitudinal direction the carriage 6, parallel to the drilling axis 9, is movable. For this purpose, a rail 25 is provided on the carriage 6 via retaining arms, on which the manipulator arm 24 is displaceably mounted by means of a longitudinal guide, in particular a sliding guide. For driven displacement, a drive device, not shown, is provided.

The manipulator 20 has two telescopic arms 27, 28. The telescopic arm 27 is telescopically transversely to the longitudinal direction of the carriage 6, the second telescopic arm 28 in the direction perpendicular to the two aforementioned directions. The L-shaped telescopic arms 27, 28 are arranged so that they surround the rod magazine 1. In particular, the second telescopic arm 28 extends beyond the rod magazine 1 from the first telescopic arm 27. For powered telescoping, the two telescopic arms 27, 28 each have at least one hydraulic cylinder.

At the end on the second telescopic arm 28, a yoke 29 is provided, which runs parallel to the drilling axis 9 and the longitudinal direction of the carriage 6. At the two opposite ends of this yoke 29 a respective gripper 21, 22 for gripping the tubes 31, 32 is provided.

Individual procedural steps in assembling the collated drill string are in the FIGS. 1 and 6 to 8 shown. As shown in these figures, inner tube 31 and outer tube 32 are bored together, ie in pairs, in the drilling axis 9 during drilling.

As in Fig. 1 is shown, at the beginning of the removal process, the gripper tongs 21, 22 moved by moving the manipulator 20 to the pair of tubes to be removed and the gripper tongs 21, 22 closed. The first gripper 21 engages an inner tube 31, the second gripper tongs 22 a surrounding outer tube 32. Subsequently ( Fig. 6 ), the manipulator 20 along the carriage 6 from Lafettenfuß away on the drill drive 8 to move and the pair of tubes consisting of outer tube 32 and inner tube 31 is thereby pulled out of the receptacle 4. By extending the first telescopic arm 27, the pair of tubes is then lifted radially out of the rod magazine 1.

According to Fig. 7 the second telescopic arm 28 is extended and arranged the pair of tubes above the drilling axis 9. Subsequently, the manipulator 20 together with the gripped tube pair along the carriage 6 is driven away from the drill drive 8 to the carriage foot.

Now, the first telescopic arm 27 is retracted and thereby lowered the pipe pair in the drilling axis 9. Subsequently, as in FIG. 8 shown, the drill drive 8 moved along the carriage 6 to the pair of tubes. First, the inner tube 31 is connected to the drill drive 8 and then the first gripper 21 open. Then the outer tube 32 is connected to the drill drive 8 and the second gripper tongs 22 are opened. Now, the pipe pair can be connected to an adjacent, already sunken pipe pair 38.

To insert a further tube pair, the rod magazine 1 is rotated so that a filled receptacle 4 reaches the top-side removal position and the removal operation described is started again.

The recovery and the magazining of the boom are in FIGS. 9 to 12 explained.

First, by means of the drill drive 8, an inner tube 31 is pulled axially out of the surrounding outer tube 32, detached from the remaining inner tube linkage and gripped by means of both gripping tongs 21, 22 of the manipulator 20 ( FIG. 9 ). If necessary, the outer tube 32 can be held by means of the clamping tongs 60.

By subsequently actuating the manipulator 20 in all three axial directions, the inner tube 31 is arranged frontally in front of an empty receptacle 4 of the linkage magazine 1.

By subsequent movement of the manipulator 20 in the longitudinal direction of the carriage 6 on the carriage foot to the inner tube 31 is inserted into the receptacle 4. The two grippers 21, 22 can now be opened.
Subsequently, the drill drive 8 is moved up to the next inner tube 31 and this pulled out by retracting the drill drive 8 from the surrounding outer tube 32. By repeating the steps described, the entire inner rod can be pulled out of the outer rod and stored in magazines. The remaining after each removal step in the drilling axis 9 inner linkage section is held by means of the clamping tongs 60.

If the inner rod is completely pulled, the drill drive 8 is connected to the outer rod and an outer tube 32 is pulled by axial movement of the drill drive 8 and released from the adjacent outer tube.

According to FIG. 10 the outer tube 32 is gripped by both gripping tongs 21, 22 of the manipulator 20 and separated from the drill drive 8. Now, the manipulator 20 is corresponding Figures 11 and 12 such a procedure that the outer tube. 32 at the front is arranged in front of an already occupied with an inner tube 31 receptacle 4.

By finally moving the manipulator 20 along the carriage 6, the outer tube 32 is moved over the inner tube 31 into the receptacle 4. The two grippers 21, 22, which hold the outer tube 32, can now be opened. The process can now be repeated to pull another outer tube 32 until the entire outer rod 32 is magazined.

As in Fig. 5 is shown, the inner tube 31 may also have a spiral screw. In this case, the clamping shells 23 of the two grippers 21, 22 suitably have a width which is greater than the pitch of the screw helix.

The FIGS. 13 and 14 show how the rod magazine 1 of the device Fig. 1 can be replaceable provided.

In this case, the bearing 13, on which the axle tube 12 of the rod magazine 1 is rotatably mounted, releasably designed. In particular, the bearing 13 has two bearing shells 14, 14 ', wherein the first bearing shell 14 relative to the second bearing shell 14' is pivotable. As a result, the bearing can be opened and the axle tube 12 removed.

As Fig. 13 can be seen, a plug connection with a sleeve 51 is provided on the rear side of the axle tube 12. From this sleeve 51, the axle tube 12 can be pulled axially forward, after the axle tube 12 is released by loosening the front bearing 13. A front part of the linkage magazine 1, which contains the receptacles 4 and thus can also be referred to as a receiving part 71, can in this case by a rearward drive part 72 of the rod magazine 1 are solved. In order to ensure safe transport of the extracted receiving part 71 together with the inner tubes, a cover 53 is provided on the rod magazine 1 on the front side facing away from the receptacles 4, which limits an axial movement of the tubes and in particular prevents slipping out of the receptacles 4.

In the drive part 72, which remains after removal of the receiving part 71 on the carriage 6, there is the rotary drive of the linkage magazine 1. For transmitting the drive energy from the drive part 72 to the receiving part 71, the sleeve 51 may be formed for a positive connection with the axle tube 12.

On the receiving part 71 eyelets 56 are provided with which this can be gebolzt to secure against unintentional release and / or torque transmission to the drive member 72.

Claims (8)

1. Drilling device, in particular an earth or rock drilling apparatus , comprising

   - a drilling equipment having a drilling drive (8) for double rod drilling, the drilling drive (8) is supported on a carriage (6) and

   - a device for charging the drilling equipment with a double rod,

   - the device for charging the drilling equipment has a rod magazine (1) having several receiving spaces (4) for inner tubes (31) and outer tubes (32) of the double rod, and being designed as a rotatable revolver magazine comprising double receiving spaces, which each have a retaining element for an outer tube (32) and a further retaining element for an inner tube (31) arranged inside the outer tube (32),

   characterized in that

   - the device for charging the drilling equipment has a manipulator (20) for gripping and moving the tubes (31, 32) into and out of the rod magazine (1),

   - the rod magazine (1) is arranged between the carriage (6) and a first telescopic arm (27) of the manipulator (20), and

   - on the first telescopic arm (27) a second telescopic arm (28) with gripping claws (21, 22) is arranged in a displaceable manner.
2. Drilling device according to claim 1,
   characterized in that
   the receiving spaces (4) are arranged on a circle (80), whose centre lies on an axis of rotation (2) of the rod magazine (1).
3. Drilling device according to any one of claims 1 or 2,
   characterized in that
   the rod magazine (1) has a central axle tube (12), by which the rod magazine (1) is supported on at least one bearing point (13).
4. Drilling device according to any one of claims 1 to 3,
   characterized in that
   at least one bearing point (13) of the rod magazine (1) is detachable.
5. Drilling device according to any one of claims 1 to 4,
   characterized in that
   the rod magazine (1) is designed of several parts comprising a receiving part (71), on which the receiving spaces (4) are arranged, and a drive part (72), on which a rotary magazine drive is arranged, the receiving part (71) being preferably provided in a detachable manner on the drive part (72).
6. Drilling device according to any one of claims 1 to 5,
   characterized in that
   the retaining elements have a first stop for the inner tube (31) and a second stop for the outer tube (32), the stops being offset axially with respect to each other.
7. Drilling device according to any one of claims 1 to 6,
   characterized in that
   the manipulator (20) has three axes of motion, in particular orthogonal linear axes, one of which extends approximately parallel to the longitudinal axis of the receiving spaces (4).
8. Drilling device according to any one of claims 1 to 7,
   characterized in that
   the manipulator (20) has two gripping claws (21, 22).

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