WO2005073498A1

WO2005073498A1 - Pipe bearing or rod bearing for a drilling system

Info

Publication number: WO2005073498A1
Application number: PCT/EP2005/000457
Authority: WO
Inventors: Andreas Beck
Original assignee: Max Streicher Gmbh & Co. Kg Aa
Priority date: 2004-01-28
Filing date: 2005-01-18
Publication date: 2005-08-11
Also published as: DE202004001241U1

Abstract

The invention relates to a pipe bearing or rod bearing for a drilling system, comprising the following characteristics: a plurality of bearing cassettes (1) comprising means for receiving a plurality of elongate segments in a parallel successive arrangement; at least one bearing carriage (2) whereon a plurality of bearing cassettes (1) are arranged in a stacked manner; and an empty cassette stand (5) which comprises a frame and means for individually lifting and arresting the respective uppermost plurality of bearing cassettes (1) which are stacked on the bearing carriage (2).

Description

PIPE OR ROD BEARING FOR A DRILLING SYSTEM

The present invention relates to a storage device for storing and providing segments of a drill string of a drilling device or drilling rig, which is suitable for producing bores in soil and rock. In particular, the present invention relates to a tube or rod bearing for a vertical drilling device. However, the principle of the invention can also be applied to other drilling devices such as e.g. can be used for horizontal drilling devices or inclined drilling devices. The pipe store is not restricted to pipes in the narrow sense, but is suitable for any type of elongated tubular or rod-like components.

State of the art Vertical drilling for the exploration of oil and gas fields as well as for geothermal projects as well as horizontal drilling for tunneling buildings, traffic routes or waterways have long been carried out with the help of drilling rigs, with a drilling tool, also at a front or lower end of a drill string Called boring head. The drill string consists of a large number of segments that are gradually screwed together or connected in some other way as the drilling depth or drilling length increases. At the rear or upper end of the drill string, the same ends in a drilling device which sets the drill string in rotation. In addition to the actual drill string, one can gradually be added The casing (casing) is pushed into the drill channel in which the drill string can rotate.

To enable largely continuous work, it is necessary to have a sufficient number of segments at the drilling site. After delivery, the segments are usually initially stored in large quantities in an intermediate store as a stack or pile. A certain number of segments are brought from the interim storage facility to a storage place for immediate consumption, from where they are fed to the drilling device through a handling system, which can include conveyor belts, excavators, cranes, etc. The storage area as well as the intermediate storage (s) occupy a comparatively large area on drilling sites, since the individual segments at the storage site are often deposited in such a way that they roll to a recording location due to the effect of a slightly inclined inclined plane. Moving the segments from the stack warehouse to the storage area is a time-consuming and accident-prone and error-prone work step, since heavy hand-guided transport equipment is used, the segments have a considerable swivel radius and the segments are in the correct orientation and with not too great positional deviations on the storage area must be stored so that they can be supplied to the handling system in an orderly manner.

Summary of the Invention It is the primary object of the present invention to overcome the above disadvantages of the prior art. Another object of the present invention is to provide a tube store with which a safe and space-saving and cost-saving storage and transfer of rod-like or tube-like components to a handling system is possible.

The object is achieved by the features of claim 1. Advantageous embodiments and further developments of the invention form the subject of the subclaims.

According to claim 1, the provision of the segments on individual storage cassettes and stacking of a plurality of storage cassettes on a carrier carriage means that a relatively large number of segments can be kept ready for immediate use in a small space and in an exact orientation. The storage cassettes or the carrier cars themselves can be delivered fully loaded to the drilling site, eliminating the need for intermediate storage and the work step of relocating. The required parking space at the drilling site and the work involved are reduced. This reduces the overall costs and the risk of accidents and errors. With the empty cassette rack, which has the means for individually lifting and locking at least the uppermost of the plurality of storage cassettes, after removal of all segments from the uppermost storage cassette, the carrier cars can be moved to the empty cassette rack by a handling system, which is the uppermost (empty) storage cassette can automatically remove and hold. Once all the storage cassettes have been emptied, the storage cassettes held on the empty cassette rack can be removed with a forklift. taken and taken away while the carrier wagon is loaded with fresh storage cassettes. Alternatively, the carrier car can drive to the empty cassette rack one last time, take over all the other empty storage cassettes from the empty cassette rack there, drive to the other end of the route and be loaded and unloaded there or also exchanged as a whole. Manual work for removing empty storage cassettes from the empty cassette shelf is then no longer necessary. As a result, labor costs and the risk of accidents and errors are reduced again.

According to claim 2, a cylinder-operated lever mechanism is provided for each storage cassette on a carrier carriage (with the exception of the bottom one), which lever also takes over the locking (for example by blocking the cylinder) of the respective storage cassette. The control effort when removing a single storage cassette is minimal. A cylinder is preferably provided for each of the pair of levers. With a suitable design of the means for receiving the bearing cassette and the corresponding counterparts, the bearing cassette can thus be held even if one cylinder fails, which creates additional reliability. The pair of levers can also be structurally connected to a single cylinder. This further simplifies the control, since only one cylinder has to be activated. The acquisition costs for half of the cylinders are eliminated.

In a construction according to claims 3 to 9, when a storage cassette is to be inserted into the empty cassette shelf, the pallet truck moves into the correct vertical position for accommodating the uppermost storage cassette. In the- Water vertical position of the pallet truck raises the bearing cassette so far that the locking device can engage in the corresponding counterparts on the bearing cassette. Then the pallet truck moves down a little so that the locking device bears the weight of the storage cassette. In the case of movable supporting beams according to claim 4 or 5, the pallet truck then moves back into its starting position. The pallet truck can then move into the appropriate position to accommodate the next lower storage cassette. This design has the advantage that the functions of lifting and locking are structurally separate and are no longer fulfilled by the lever / cylinder pairs to be provided for all storage cassettes. This lowers the cost of the system when the acquisition and production costs of the lifting device and the locking devices are lower than a pair of levers / cylinders for each of the storage cartridges, which is the case from a certain number of storage cartridges stacked on a stack is. In the construction of this variant, the locking device takes over the task of locking and carries the weight of the storage cassette most of the time. This contributes to reliability, since the locking devices, once engaged, passively carry the load of the storage cartridges. The lifting device only has to lift the storage cassettes for a short time. Therefore, there can be no problems with the failure of a cylinder, which would otherwise have to bear the load of an empty cartridge for a comparatively long period of time. Further aspects, features, objects and advantages of the present invention will become apparent from the following description of the preferred embodiment and some modifications and variations of the present invention with reference to the drawings.

Brief description of the drawings

Fig. 1 shows a side view of a rod and tube bearing according to the preferred embodiment of the present invention. Fig. 2 shows a front view of the rod and tube bearing according to the preferred embodiment of the present invention.

3 shows a top view of the rod and tube bearing according to the preferred embodiment of the present invention.

Fig. 4 shows a modification of the rod and tube bearing according to the present invention.

Fig. 5 shows a plan view of a modification in a rail system of the rod and tube bearing according to the present invention. Fig. 6 shows a side view of the modification of the rail system of the rod and tube bearing according to the present invention.

Fig. 7 shows a front view of the modification of the rail system of the rod and tube bearing according to the present invention. 8 shows a side view of a modification in a lifting and locking system of the rod and tube bearing according to the present invention. Fig. 9 shows a sectional top view of a detail of the modification of the lifting and locking system of the rod and tube bearing according to the present invention.

10 shows a sectional top view of a detail of a variant of the modification of the lifting and locking system of the rod and tube bearing according to the present invention.

Fig. 11 shows a sectional side view of a conveyor system of a modification of the present invention.

Description of the Preferred Embodiment Figure 1 shows an automated warehouse in accordance with the present invention. The warehouse consists of storage cassettes 1, a driven carrier carriage 2, rails 3, a base frame 4, an empty cassette rack 5 with a lifting / locking system 6 for the empty cassettes.

The boring bars, casing pipes or special equipment are loaded into the trucks lying on the storage cassettes 1 and delivered to the construction site. This speeds up truck loading and unloading. The storage cassettes 1 are designed in such a way that they can easily be picked up with standard forklift trucks. The storage cartridges 1 are also designed so that they can be stacked one above the other are. This significantly reduces the space required for an interim storage facility.

Each of the storage cassettes has receptacles for the roll-proof arrangement of a plurality of boring bars, pipes or casings in parallel next to one another. According to the drawing, each storage cassette has nine such storage spaces; however, the number of recording places is irrelevant to the present invention.

The full storage cassettes 1 are stacked one above the other in a loading position A on the carrier carriage 2. Therefore, there is no need to repeatedly pick up the boring bars or casings. A stack of ten storage cartridges is shown in the drawing. However, this number may vary depending on the requirements.

The storage cartridges 1 can have means that when

Stack on top of one another in a form-fitting manner and prevent slipping in the horizontal direction. Such

Means can be, for example, bolts on the upper side and recesses on the lower side of the storage cassettes 1.

The carrier carriage 2 travels on the rails 3 and can be stopped in any defined position. These rails 3 are attached to the base frame 4, which is constructed from a steel structure in a self-supporting manner. The carrier carriage 2 stops in a removal position B in such a way that the center of the objects to be lifted lies below the center of a gripper 7 of a handling system (pipehandler) 8. The gripper 7 of the pipe handler 8 thus successively removes all counter stands from the top storage cassette 1 and passes this to a drilling rig.

After the last item has been removed from the storage cassette 1, the carrier carriage moves so far in the direction of the empty cassette shelf into a storage position C that the lifting / locking systems 6 attached there are accommodated

122 can intervene on the empty cassette 1. The empty cassette rack 5 with the lifting / locking system 6, which is located at one end of the running rails, consists of actuating cylinders 60 and levers 69 with receiving claws 69a. By extending the actuating cylinder 60, the claw 69a engages in the receptacle 9 of the empty storage cassette 1, lifts it out of the guide of the storage cassette 1 underneath and pulls it onto the frame of the empty cassette shelf 5. As a result, the empty cassette 1 is supported there and is hanging straight on the shelf ,

The receiving claws 69a of the lifting / locking system 6 are constructed in such a way that the empty cassettes 1 can be removed in the locked position, for example by a forklift. After the last storage cassette has been unloaded by the pipe handling system, the carrier carriage 2 drives once again to the empty cassette rack 5, where the forklift (not shown in more detail) grasps the empty storage cassette 1 located on the carrier carriage 2 and lifts it so far that it reaches the lowest one in the empty cassette rack 5 locked bearing cassette 1 bumps. Then the forklift truck suddenly lifts the entire stack so far that the locking tion is released by the claws 69a, and moves so far forward that the area of the claws 69a is left in the horizontal direction. The levers 69 of the lifting / locking system 6 pivot back, and the forklift lifts the stack of empty cassettes 1 over the frame of the empty cassette shelf and backwards over it. (The levers 69 can also pivot back later.) The empty cassettes 1 can then be transported away for refilling or temporarily stored for use in removing the drill string. In the meantime, the carrier carriage 2 moves into the loading position A of the rail track 3 and is loaded there with full storage cassettes 1.

The drill string is removed analogously to this in the reverse order. For this purpose, the empty cassette rack 5 is first loaded with empty storage cassettes with the aid of a forklift, an empty storage cassette 1 being placed on the carrier carriage 2, and the removed items are gradually placed on this bearing cassette 1 on the carrier carriage 2. When the storage cassette 1 is fully loaded, the carrier carriage 2 moves to the empty cassette rack, the next higher storage cassette 1 is lowered onto the carrier carriage by means of the lifting / locking mechanism 6, and this storage cassette 2 can be loaded. This is repeated until the carrier carriage 2 has reached its stacking capacity. Then the filled stack of cassettes is removed in the loading position A.

The structural design makes it possible for the handling system to be used flexibly, for example for working with a lifting box. The required drilling site area is significantly reduced by the possibility of high cassette stacks.

The system can be flexibly equipped with various storage cassette types (e.g. for drill rods and casings).

The simple structure facilitates automation; in connection with the use of the handling system 8 mentioned above, the drilling rig can be loaded fully automatically. The applicant of the present inventors has submitted a separate application for an automated handling system. This is the German patent application entitled "Device and method for handling objects on a drilling rig" (attorney file number P / 11ST0412 / DE) from the same filing date. The content of the disclosure there is referred to in full in the context of the present application.

Instead of removing or inserting the empty storage cassettes 1 from the empty cassette rack 5 with a fork-lift truck, the sequence can also be modified as follows. After the last storage cassette 1 has been emptied on the carrier carriage 2, the carrier carriage 2 moves to the storage position C under the empty cassette stack in the empty cassette rack 5, and the empty cassettes 1 locked there are lowered by means of the lifting / locking system 6 and again on the carrier carriage 2 stored. Then the carrier wagon 2 moves into the loading position A, the empty storage cassettes 1 are removed with a forklift, and a fresh stack of filled storage cassettes 1 is also placed on the carrier wagon 2 with the aid of a forklift. When the drill string is removed, it becomes empty The cassette stack is moved from the loading position A with the carrier car 2 to the storage position C to the empty cassette rack 5, the storage cassettes 1 with the exception of the lowest are lifted by means of the lifting / locking mechanisms 6, and the carrier car 2 moves to the removal position C, where the removed objects are stored on the storage cassette 1 with the aid of the handling system 8. If a storage cassette 1 is filled, the carrier carriage 2 travels under the stack of empty storage cassettes 1 in the empty cassette rack 5 into the storage position C, picks up the next higher empty cassette 1 there, and this is filled with removed objects by the handling system 8. This is repeated until all storage cartridges are filled. Then the carrier carriage 2 moves to the front end of the running rails 3, where the filled cassette stack is removed with the aid of the forklift and a new empty cassette stack is loaded onto the carrier carriage 2.

With this variant, the transport movements with forklift trucks are limited to the front area of the running rails 3, which again contributes to the operational safety and economy of the processes.

In a modification of the tube storage, which is shown in a side view in FIG. 4, the entire empty cassette rack 5 is designed to be foldable. Its width dimension is already dimensioned in the aforementioned preferred embodiment so that the entire empty cassette rack fits between the two rails 2. The running rails 3 on the side of the empty cassette shelf 5 are at least so long that the folded empty cassette shelf 5 completely disappears in between. The total height of the Base frame 4 and the running rails 3 are dimensioned such that the carrier carriage 2 can move over the folded empty cassette rack 5. In this modification, the empty cassettes 1 are lowered onto the carrier carriage 2, the empty cassette rack 5 is folded down and the carrier carriage 2 moves over the folded empty cassette rack 5 to the end of the running rails 3, where the empty cassettes 1 are removed by means of a forklift. In the meantime, a second carrier carriage 2, which has already been waiting fully loaded at the other end of the running rails 3, travels to the removal point B and can already be unloaded by the handling system. The first carrier carriage 2 is also lifted off the rails 3 by means of a forklift and put back onto the rails 3 in the loading position A, where it can be fitted with new, full storage cassettes 1. The empty cassette rack 5 is erected again and is available for receiving empty storage cassettes 1.

This modification is designed for a case in which a fast drilling progress is achieved and work that is as delay-free as possible is desired. It is appropriate if the time required to remove the empty storage cassettes 1 and to load them with fresh storage cassettes 1 is noticeably longer than the time required for the handling system 8 to remove the last item and to feed it to the drilling device. The same purpose is achieved with another modification of the pipe support of the present invention. A rail system 3 with support structure 4 for a pipe store is shown in Figs. 5 through 7, Fig. 5 being a top view, Fig. 6 being a side view, and Fig. 7 being a front view. 5 to 7 carrier cars 2 and storage cassettes 1 are omitted. Here, the rail system 3 has: a main line 3a, in which the removal point B is located; a return line 3d, which extends parallel to the main line of the same length, on the other side of the pipe handling system 8 at a distance which is so large that the return line 3d runs outside the region of the longest of the objects handled on the main line 3a ; and a rear and a front part strand 3b, 3c, which are each at least as long as a carrier carriage 2 and are mounted on a part frame 4b, 4c, which in turn are on rails of a rear and front cross strand 3e, 3f at the ends of the Main strand 3a or the return strand 3d can be moved horizontally perpendicular to the running direction of the main strand 3a or the return strand 3d in such a way that they either lengthen the main strand 3a or the return strand 3d and connect them so closely to each other that a carrier car 2 from one of the main line 3a and the return line 3d can travel to a partial line 3b, 3c and vice versa. The main frame 4a of the support structure 4 carries the rails of the main line 3a, the return line 3d and the cross lines 3e, 3f. The empty cassette rack 5 is mounted directly on the connection to the rear branch 3b on the main frame 4a.

In this development, a first carrier car 2 moves after being completely unloaded through the handling system 8 and the empty cassette rack 5 under the stack with the in the

Empty cassette rack 5 empty cassettes 1, and the entire stack of empty cassettes located there is lowered onto the carrier carriage 2. The first carrier carriage moves back a little to leave the area of the claws 69a of the lifting / locking mechanism 6, but is still located on the rear branch 3b of the rail system 3. Meanwhile, a loaded second carrier carriage 2 can be found at the removal point B of the main branch 3a of the rail system 3 can already be started to be unloaded by means of the pipe handling system 8. The rear partial strand 3b, together with the first carrier carriage 2 with the empty cassettes 1, moves laterally until it connects to the return strand 3d. The first carrier car 2 travels back over the return leg 3d to the front sub-leg 3c adjoining it. In the meantime, the rear part strand 3b moves back until it connects to the main strand 3a again. The front branch 3c now moves laterally until it connects to the main branch 3a. There, the first carrier car 2 is unloaded with the aid of a forklift and loaded with full storage cassettes 1. (The unloading can also be carried out if the front partial strand 3d is still in the position following the return strand 3d.)

This completely eliminates the need to transport empty cassettes and / or carrier cars from one end to the other end with a forklift, which can make a significant contribution to safety, for example, on uneven ground at the drilling site. In addition, quasi-continuous operation is possible even with rapid drilling progress. If the empty cassettes, either in the preferred embodiment or in the second modification, are accommodated at the front end of the running rails 3, it is also conceivable to dispense entirely with a forklift and to place the storage cassettes on the carrier cars as a finished stack with a lifting system attached to the transport vehicle and to remove them from them.

If such a lifting system on the transport vehicle is provided with tracks of the same track width as that of the pipe store, it is also possible to assemble the carrier cars 2 together with the cassette stack in the factory and thus deliver them. The carrier carriage 2 is then only lowered by the transport vehicle and moves from the lifting system onto the running rails 3 of the pipe store. In this case, the front part strand 3c and the front cross strand 3f can be dispensed with.

The transport vehicle can be a truck, a tractor with a trailer or a rail wagon. If the loading area of the transport vehicle is so low or the road area in front of the rail system 3 is lowered so far that the rail system 3 is level with the loading area of the transport vehicle, a lifting system on the transport vehicle can also be dispensed with. It is only necessary to ensure that the gap between the loading area and the rail system is bridged in a horizontal direction.

A further modification of the tube and rod bearing of the present invention relates to the lifting / locking system 6 of the empty cassette bearing 5. In the preferred embodiment, for each empty cassette 1 (with the exception of the bottom one) there is a lever / cylinder mechanism for lifting and simultaneously locking the respective empty cassette provided. In the modification of this arrangement, a lifting device is attached to the frame of the empty cassette rack 5. Furthermore, a locking device is provided for each storage cassette 1. A lifting truck can be moved vertically on the frame of the empty cassette rack 5 by means of the lifting device. The pallet truck has a gripper mounted thereon, which engages in a suitable counterpart on a storage cassette 1, and raises the storage cassette 1 to such an extent that it is released from the stack on the carrier carriage 2. In this position, the locking device engages in a suitable counterpart on the bearing cassette 1 and holds it in this position. The pallet truck then moves down to await the next storage cassette.

8 shows an example of an empty cassette rack 5 with a lifting / locking system 6 modified in this way in a side view. In Fig. 9 the lifting and locking system 6 is shown from above in partial section enlargement. It should be noted that only one half of the system is shown in FIG. 9, which corresponds to one of the two vertical supports of the frame of the empty cassette rack 5. The identical arrangement is again mirrored. In this example, the vertical supports of the frame of the empty cassette rack 5 are not close together as in the preferred embodiment within the rail track 3, but so far apart that the outermost dimension of the supports in the transverse direction to the running direction of the rail track 3 is essentially the width of a support carriage 2 equivalent. A rack 511 is attached to the frame of the empty cassette rack 5, which here has a double-T support 510 as the main load-bearing component. Two continuous flat steels 512a, 512b, which each carry a prismatic running rail 513a, 513b, are welded to one another on the outer edge of its two opposite cross pieces on an outer side of the carrier 510 in the width direction of the entire tube bearing arrangement. (Here and below, reference numerals with an "a" at the end indicate that the component in question is on the side facing the rest of the tube bearing arrangement, in particular the rail system 3 with the carrier carriage 2 and the storage cassettes 1, while reference numerals with an " b "indicate the opposite side at the end.)

A pallet truck 61 consists of a substantially rectangular plate 610 with an extension 610a on the side of a storage cassette 1. The extension 610a has a hook shape that mates with a suitable counterpart on the storage cassette 1. The base plate 610 carries two pairs of running wheels 615a, 615b, each of which engages in one of the running rails 513a, 513b and the running surfaces of which have a groove that matches the prism shape of the running rails 513a, 513b, and at least one pinion 617 that connects to the rack 511 in Is engaged and driven by a motor 617, which is mounted on the pallet truck 61.

On the opposite side of the carrier 510, a horizontal through hole 514a, 514b is provided through the two cross pieces for each storage cassette 1 to be accommodated in the empty cassette rack 5 at a suitable height. In A bolt 65 extends through the through holes 514a, 514b of the carrier 510. The bolt 65 is restricted in its freedom of movement by retaining rings 66 such that, in the retracted position, the end of the bolt 65 mounted in the hole 514a is flush with the outer surface of the carrier 510, in the extended position, the end of the bolt 65 stored in the hole 514b just does not disappear in the hole 514b. On the side facing the carrier 510, the bolt 65 has a flattening 655 in the region which, when the bolt 65 is in the retracted state, between the two transverse pieces of the double T, in which a toothing 656 is arranged. A pinion 67 engages in this toothing 656, which in turn is driven by a motor 68 fastened to the carrier 510 in such a way that it can cause the bolt 65 to move back and forth.

As already mentioned, the bolt 65 with the securing rings 66, the pinion 67 and the motor 68 are present once for each half, that is to say twice for each empty cassette 1 to be accommodated.

A section of a storage cassette 1 is also shown in FIG. 9. The storage cassette 1 has a base frame 11. On this base frame, a profile 12 is welded vertically, which is shown here as a rectangular tube 12. The rectangular tube 12 is provided with a continuous transverse bore 121 on the end face of the bearing cassette 1, which has the same diameter as the bore 514a and is aligned with the bores 514a, 514b in the locking position. In the extended state, the bolt 65 extends through the entire profile 12 and thus carries the bearing cassette 1 at two bearing points of the profile 12. As a result, the tilting moment and the weight of the bearing cassette 1 are absorbed and this is held in its position. The counter moment and the vertical load in turn are derived from the bearing points embodied in the holes 514a, 514b in the carrier 510. The pallet truck can now go down and await the next storage cassette.

To increase the holding torque, a further pipe section 13 can be welded to the side of the profile 12 facing the interior of the bearing cassette 1, and the bore 121 can also extend through this pipe section 13.

It goes without saying that the bolt 65 can have a different, for example rectangular or hexagonal, cross section instead of a round cross section. In this case, a through hole is more appropriate instead of the bore 121

To provide cross-sectional shape.

On the other side of the profile 12 in the width direction of the bearing cassette 1, that is to say on the outside thereof, a pipe section 14 (alternatively a bolt made of solid material) is attached, which cooperates with the hook-shaped extension 610a. As already said, in this example of the modification of the empty cassette rack, the supports of its frame are as wide apart as a storage cassette 1 is. This is because the type of lifting device shown above can only be used if the profile 12 is located on the outer edge of the base frame 11 of the storage cassette 1, since otherwise the base frame 11 would block the downward movement of the extension 610a. Therefore, this type of lifting device cannot be used with tight-standing beams 510. Furthermore, there may be situations in which additional securing of the locking device against horizontal movements away from the carrier 510 is desired, which is not possible with the configuration described above.

A variation of the lifting device as well as the locking device of the aforementioned modification of the present invention, which is shown in FIG. 10, takes these needs into account. An enlarged detail of one half of the lifting / locking mechanism is shown again. As in FIG. 9, the essential load-bearing component of an empty cassette rack 5 (or one half of it) is a double-T support 510. 511j welded on. (Here and below, reference numerals with an "i" refer to components on the side facing the center plane of the empty cassette rack, reference numerals with a "j" at the end refer to components on the other, outer side.) On the flat steels 511i, 511j is in each case a running rail 512i, 512j fastened, the prism-shaped running surfaces point away from each other. The outer running rail 512j here has a tooth on the side opposite the running surface. bar profile, but a separate rack can also be attached to the carrier 510.

A pallet truck 61 comprises a substantially rectangular plate 610, the two pairs of running wheels 615i, 615j, which each engage in one of the running rails 513a, 513b and whose running surfaces have a groove which matches the prism shape of the running rails 513a, 513b, and at least a pinion 617, which is in engagement with the rack profile of the running rail 513j or the separate rack and is driven by a motor 617 which is mounted on the lifting truck 61. A second substantially rectangular plate 611 is welded at right angles to the outward edge of plate 610 such that it extends along the outer side of carrier 510.

In a modification of the principle of operation of the previous modification, the plate 611 has no extension for picking up an empty cassette. Rather, a cylinder 62 and a bearing block 63 are mounted on the plate 611, the direction of action of the cylinder 62 being aligned with the bearing cassettes and the opening of the bearing block 63 being aligned with this direction of action, and a beam 64 extending through the bearing block 63 is connected at one end to the bearing block 63 and at the other end has an upwardly directed hook 64a which cooperates with a suitable counterpart on the bearing cassette 1. This modification has the advantage that the bar 64 can be retracted and therefore no longer with the base frame 11 in the downward movement of the lifting truck 61 Storage cassette 1 blocked. In addition, the arrangement of the flat steels 511i, 511j is more favorable than that of the brackets 512a, 512b from the point of view of production technology, since it is not necessary to weld back inside the double-T beam. A narrow spacing of the carriers 510 is thus also possible. Because cylinders 62 do not have to carry loads, they can be made simpler and cheaper than cylinders 60 of the preferred embodiment. On the side of the carrier 510 pointing towards the center of the empty cassette shelf 5, profile pieces 520 are welded horizontally at intervals and a number which corresponds to the heights and the number of empty cassettes to be accommodated, in such a way that they face forward, ie in the direction of the empty cassettes 1, extend slightly beyond the dimension of the carrier 510. In this projecting area, a horizontal through-hole 521 is provided transversely to the running direction of the profile piece 520 as well as of the carrier 510. This through hole receives a latch 65 'of a locking mechanism, which is exemplified here by the latch 65.', a connecting rod or connecting rod 65 '', a rotating bar 65 '''and a motor 68'. The locking mechanism is supported by an additional support 530, only indicated in the figure, with brackets 540 welded to it.

Of course, instead of the lever mechanism 65 ', 65' 'for moving the pin 65', a pinion / rack drive as described above or a cylinder can be used.

As in the case shown in FIG. 9, the storage cassette 1 has a base frame 11 with a vertically welded profile 12, which is shown here as a rectangular tube 12. In this case, however, the profile has a bore 121 'in only one wall, namely in the wall which faces the locking mechanism 65. Hole 121 'has the same diameter as through hole 521 and is aligned with it in a locking position to receive latch 65'.

With this construction, the empty cassette is kept largely immovable, namely in the vertical direction by the latch 651 and the hole 123, in the horizontal longitudinal direction (here "longitudinal" in the direction of the movement of the carrier carriage 2) also by the latch 651 and that Hole 123, in the horizontal transverse direction with some play, but which can be determined by the size and position of the profile 12, through the profile piece 520 and the profile 12, and in the tilting direction on the one hand again through the bolt 651 and the hole 123 and the stop on the carrier 510. In the modification according to FIG. 9 or 10, it is also possible to constructively connect the base plates 610 of the two lifting trucks 61 or (in the case of FIG. 10) to combine them into a single plate extending over both carriers 510 and thus the two Pallet truck 61 itself to form a single pallet truck, the arrangement of the runners and racks being adapted accordingly if necessary i st.

It is understood that the embodiments and modifications described above and shown in the figures are only examples of the various design options of the present invention. In particular, if there is talk in the examples of a weld, a connection by screwing, riveting, soldering or gluing may also be conceivable, as is currently suitable according to the requirements.

If movements are exemplified by certain means, the invention is not limited to these means. For example, in addition to racks and pinions, linear movements can also be generated by a trapezoidal screw and lock nut, worm wheel and worm, hydraulic cylinders, pneumatic cylinders or linear motors. In particular, bolt movements can be generated by any type of gear, cylinder or motor or by magnetic force or spring force.

In the preferred embodiment, the carrier cars 2 have their own drive. However, the carrier cars can also be provided without their own drive and have only one coupling which engages in a corresponding mating coupling on the rail track. In this case, the movement of the carrier car is generated by a suitable device on the base frame 4. This can be a chain with a driver, a trapezoidal threaded rod or a cylinder with a vertical cable system. An exemplary embodiment of this modification with conveyor chains 9a, 9c is shown in FIG. 11 for the application of a system with a main and partial rail track. In the modification of the empty cassette warehouse, lifting trucks 61 are equipped with grooved rollers that run in prismatic runners. Alternatively, three- Side rails with pairs of three-roller arrangements or slide rails and slide blocks can be used.

The rail track can be made so long that a plurality of carrier carriages 2 can be placed between the loading position A and the removal position B. A plurality of loaded carrier cars can thus be kept ready on the rail track. It goes without saying that individual aspects of the modifications can either be taken on their own or used or exchanged in any combination. Unless otherwise stated, the features of the preferred embodiment which are not affected by the modification continue to apply in particular to all modifications.

The above, automated tube or rod storage works with a handling device 7, 8. An advantageous handling device for drill rods and other objects, which was developed by the applicant of the present invention, forms the subject of the German patent application entitled "Device and method for handling objects on a drilling rig" (attorney file number P / 11ST0412 / DE) by the same filing. The handling device transfers the objects to a drilling device, which can be mounted on a substructure. A novel drilling device with controlled feed, which was developed by the applicant of the present invention, forms the subject of the German utility model application with the title "Device for producing deep holes in geological structures" (attorney file number B / 22ST0408 / DE) from the same filing date. An advantageous substructure, which was developed by the applicant of the present invention, forms the subject of the German utility model application entitled "Substructure for a deep drilling platform" (attorney file number B / 22ST0409 / DE) from the same filing date. Novel drilling methods, which were developed in connection with the drilling device of this application by the applicant of the present invention, form the subject of the German patent application entitled "Method for producing deep holes in geological structures" (attorney file number P / 11ST0410 / DE) from the same filing date , In the context of the present application, reference is made in full to the disclosure content of the aforementioned applications.

Claims

claims

1. Pipe or rod bearing for a drilling rig, comprising: a plurality of bearing cassettes (1), each of which has means for receiving a plurality of elongated segments in a parallel arrangement next to one another; at least one carrier carriage (2) on which a plurality of storage cassettes (1) are stacked one above the other; an empty cassette rack (5), which has a frame and means for individually lifting and locking the uppermost of the plurality of storage cassettes (1) stacked on the carrier carriage (2).

2. Bearing according to claim 1, characterized in that the means for lifting and locking individually for each bearing cassette (1) with the exception of the lowest bearing cassette (1) have a pair of levers (69) which together or in each case by means of a cylinder (60 ) can be pivoted about a pivot point provided on the frame of the empty cassette rack (5) and one end (69a) of which is designed such that it engages in a corresponding counterpart (122) on the storage cassette (1) in such a way that a storage cassette ( 1) is included.

3. Bearing according to claim 1, characterized in that the means for individual lifting and locking comprise: a lifting device which includes at least one lifting carriage (61) which can be moved vertically on the frame of the empty cassette rack (5), the at least one lifting carriage ( 61) has means for receiving a storage cassette (1); and for each storage cassette (1), with the exception of the lowest storage cassette (1), a locking device attached to the frame of the empty cassette storage (5), which engages in corresponding counterparts on the storage cassette (1) so that the storage cassette (1) on the frame of the Empty cassette warehouse is held.

4. Bearing according to claim 3, characterized in that the means for receiving a bearing cassette (1) comprise a bar (64) which has an end (64a) which is constructed in such a way that it fits into a corresponding counterpart ( 122) engages on the bearing cassette so that a bearing cassette (1) is received, and means for moving the bar (64) into an engagement position with the counterpart on the bearing cassette (1) and back.

5. Bearing according to claim 4, characterized in that the means for moving the beam (64) include a cylinder (62).

6. Bearing according to claim 3, characterized in that the means for receiving a storage cassette include a boom (610) connected to the boom (61a), which is designed such that it fits into a corresponding counterpart (122) the storage cassette (1) engages so that a storage cassette (1) is received.

7. Bearing according to one of claims 2 to 5, characterized in that the means for receiving a bearing cassette have an upwardly open claw or hook shape and the corresponding counterparts (122) tubular are pieces or bolts which are fastened to the storage cassette (1) in such a way that the bearing cassette (1) is supported against a tilting movement upon engagement of the means for receiving with the counterparts on the frame of the empty cassette shelf (5).

8. Bearing according to claim 3, characterized in that the locking device engages a bolt (65; 65 ') which engages in a corresponding counterpart (121; 121') on the bearing cassette (1) so that the bearing cassette (1) is held in a fixed position without support from the lifting device, and has means for moving the bolt into an engagement position with the counterpart on the bearing cassette and back.

9. Bearing according to claim 8, characterized in that the bolt is a bolt mounted in the frame of the empty cassette shelf (65), which engages from an end face of the bearing cassette (1) in an opening (121) of the bearing cassette (1), and the carrying length of the bolt (65) within the opening of the bearing cassette (1) is dimensioned such that the bolt (65) safely absorbs the weight and the tilting moment of the bearing cassette (1).

10. Bearing according to claim 8, characterized in that the bolt is a bolt (65 ') which laterally engages in an opening (121') of the bearing cassette (1).

11. Bearing according to one of the preceding claims, characterized in that the travel path of the carrier carriage (2) is a loading position (A) for loading and unloading the carrier carriage with a stack of storage cassettes (1), one Removal position (B) for removing and depositing objects from or on the uppermost of the storage cassettes (1) stacked on the carrier carriage (2) by a handling system (7, 8), and an empty cassette storage position (C) for removing or putting down an empty one Storage cassette (1) from or on the carrier carriage (2) through the empty cassette rack (5).

12. Bearing according to claim 11, characterized in that the carrier carriage (2) runs on rails (3) which form a rail track which has the loading position (A), the removal position (B) and the empty cassette storage position (C).

13. Bearing according to claim 12, characterized in that the rail track is part of a rail system, the rail track having a fixed main track (3a) and a laterally movable partial track (3b), the partial track (3b) directly on the main track (3a) and contains the empty cassette storage position (C), the rail system further comprising a fixed return line (3d), which runs parallel to the main line (3a) and has the same length as this, and the sub-line (3c) between the main line (3a) and the return line (3d) can be moved.

14. Bearing according to claim 13, characterized in that the rail track has a second laterally movable

Has partial strand (3c), which on the side opposite the first partial strand (3a) directly adjoins the main strand (3a), contains the loading position (A) and between see the main line (3a) and the return line (3d) is movable.

15. Bearing according to claim 13 or 14, characterized in that the bearing has at least two carrier cars (2).

16. Bearing according to one of claims 12 to 15, characterized by a base frame (4) which carries the fixed part of the rail track (3) and the empty cassette rack (5).

17. Bearing according to claim 16, characterized in that the base frame (4) further carries the return strand (3d) and a first transverse strand (3e) for moving the first partial strand (3b).

18. Bearing according to claim 17, characterized in that the base frame (4) further carries a second transverse strand (3f) for moving the second partial strand (3c).

19. Bearing according to one of claims 12 to 18, characterized in that the floor is lowered so far in front of the loading position (A) of the bearing that a carrier car (2) without overcoming a height difference from a loading area of a transport vehicle onto the rail track ( 3) and vice versa.

20. Bearing according to one of the preceding claims, characterized in that the bearing cassettes (1) in each case

Have means for form-fitting stacking of the storage cartridges one above the other.

21. Bearing according to one of the preceding claims, characterized by a control device for controlling the travel movements of the carrier carriage (2), the lifting and locking processes of the empty cassette rack (5) and, as far as referred to claim 12 or 13, the travel movements of the partial strands ( 3b, 3c).

22. Bearing according to one of the preceding claims, characterized in that the empty cassette rack (3) can be folded down.