Drilling apparatus for creating a borehole

Abstract

The application relates to a drilling apparatus (10) for creating a borehole in the ground, having a basic body (11), having a drilling tool (15, 17) which is arranged at one end of the basic body (11), having a drive provided on the basic body for the drilling tool, and having a bracing device (30) which is designed for bracing the drilling apparatus (10) in a cylindrical hollow body (20) and which has at least one bracing plane (31, 32) with at least two bracing elements (33, 34) which are arranged with a first end on the basic body (11) and which have at least one bracing body (35, 36) at their second end, wherein the at least one bracing body of the bracing element is movable from a first position to a second position by means of at least one drive (37), wherein the bracing body (35, 36) provides a form-fitting connection between the basic body and the hollow body via at least one element on the inner wall of the hollow body.

Description

Technical Field The invention relates to a drilling devices and systems for 5 establishing a drill hole in the ground. This may include drilling devices, having a main body, having a drilling tool which is disposed on one end of the main body, having a drive for the drilling tool that is provided on the 0 main body, having a bracing device which is conceived for bracing the drilling device in a cylindrical hollow body and which has at least one bracing plane having at least two bracing elements which by way of a first end are disposed on the main body and which on the second end of said bracing elements have at least 15 one bracing member, wherein the at least one bracing member of the bracing element by means of at least one drive is able to be moved from a first position to a second position. The invention furthermore relates to a system for establishing a drill hole in the ground, having an above-mentioned drilling device in 20 conjunction with a cylindrical hollow body. Background When erecting buildings in which the foundations thereof are supported in or on ground, respectively, which is situated 25 underwater, for example, these foundations are produced in various ways, wherein the use of so-called monopiles, thus single piles, has become the norm in the case of integral foundations. An alternative thereto is the so-called jacket, this being a pyramid-shaped construction, or tripods which have in each case 30 a plurality of foundation points. These buildings are wind power installations or bridge constructions, for example. 2021353032   04 Sep 2026 According to the prior art, in the case of monopiles so-called jack-up rigs are provided for example on site, the working plane of said jack-up rigs being provided with a swing gear. The pile is clamped in this swing gear, deflected from the horizontal to 5 the vertical, and by opening the clamps released onto the seabed. The pile is subsequently driven into the ground by means of a pile driver. A drilling device which, proceeding from a working platform, is 0 lowered into an upright foundation pile is known from WO 2010 / 139380 A1. The drilling device has an arm, a drilling roller by way of which the ground situated in or below the drilling pile, respectively, is excavated being disposed on the end of said arm, the drilling pile subsequently being lowered 15 into the cavity. Drilling devices which are similar to those described at the outset are likewise known from WO 2013 / 081455 A1 and from WO 2015 / 131984 A1. The drilling device has a main body which is 20 composed of two parts which are mutually displaceable by means of a hydraulic cylinder. An arm is disposed on the lower main body, a drill head being situated on the end of said arm. The rock / ground situated in or below the pile, respectively, is released and conveyed away by this arm. The housing is braced in 25 relation to the foundation pile. Provided to this end are pivotable arms on the ends of which clamping elements are provided. In order for the drilling device to be braced in the pile, the arms by way of hydraulic cylinders are pivoted outward until the clamping elements come to engage with the pile. The 30 bracing installations are in each case disposed on the upper and on the lower end of the outer housing part of the drilling 2021353032   04 Sep 2026 device. It has been demonstrated that, for one thing, the bracing installations are worthy of improvement. It is to be understood that, if any prior art is referred to herein, such reference does not constitute an admission that the 5 prior art forms a part of the common general knowledge in the art, in Australia or any other country. Summary Disclosed in a first aspect is a drilling device for establishing 0 a drill hole in the ground, having a main body comprising: a drilling tool which is disposed on one end of the main body ,a first drive for the drilling tool that is provided on the main body, a bracing device which is configured to brace the drilling device in a cylindrical hollow body ,wherein the hollow body 15 comprises an internal wall with at least one counter bearing element, wherein the bracing device has at least one bracing plane having at least two bracing elements with a first end disposed on the main body and on a second end at least one bracing member, wherein the at least one bracing member of the 20 at least two bracing elements is configured, by at least one second drive, to be horizontally moved from a first position to a second position, wherein at least one of the two bracing elements comprises at least one moveable clamping element with at least one clamping surface for providing a form-fit with the 25 at least one counter bearing element is provided on at least one of the bracing elements, wherein the at least one clamping surface is moveable by at least one third drive from a first position to a second position, and wherein, by way of the at least one clamping surface and the at least one third drive, a 30 clamping force for providing the form-fit is able to be applied to the at least one counter bearing element, said force being 2021353032   04 Sep 2026 substantially orthogonal to a drilling direction or counter to the drilling direction. The invention may improve the connection between a hollow body, 5 such as a foundation pile or a housing / machine tube of a drilling device. According to the invention , the bracing member by way of at least one element on the internal wall of the hollow body may 0 provide a form-fitting connection between the main body and the hollow body. A releasable yet stable and particularly precise connection may be achieved in a simple manner as a result. 15 A further teaching of the invention provides that the hollow body is a pile for founding a building, a casing, or a liner. It is advantageous here that the main body is removable from the 20 hollow body. As a result, it becomes possible for the hollow body to be drilled into the ground in a simple manner while the drilling device is retrievable. According to the invention the hollow body can be a housing 25 (machine tube) of the drilling device, and that the bracing member by way of at least one element on the internal wall of the housing provides a form-fitting connection between the main body and the housing. 2021353032   04 Sep 2026 A releasable yet stable and particularly precise connection between the main body and the housing may be achieved in a simple manner as a result. 5 It is advantageous here that the main body is removable from the housing. As a result, it is possible for the housing to be left behind in the ground separately from the main body of the drilling device, should this be necessary. 0 A further teaching of the invention provides that at least one clamping element having at least one movable clamping face for providing the form-fit with the at least one element is provided on at least one of the bracing elements, and that the at least one clamping face by at least one drive is able to be moved from 15 a first position to a second position. It has been demonstrated that the form-fit can be provided in a particularly simple manner as a result. It is advantageous here that the clamping face is provided so as 20 to be substantially vertical or horizontal. If the clamping face is provided so as to be horizontal, it is possible for the formfitting connection between the main body of the drilling device and the riser / housing to be achieved in a simple and effective manner in and counter to the drilling direction. If the clamping 25 face is provided so as to be vertical, it is possible for the form-fitting connection between the main body of the drilling device and the riser / housing to be achieved in a simple and effective manner in the circumferential direction of the riser / housing. 30 It is furthermore advantageous that the at least one element is at least one counter bearing face for the form-fit by the at 2021353032   04 Sep 2026 least one clamping element. As a result, the clamping elements can be disposed in a particularly simple manner so as to in each case act in the required direction. It is furthermore advantageous here that the at least one counter bearing face is 5 provided so as to extend perpendicularly from the internal wall. As a result, the required counter bearings for the clamping elements for the form-fit can be provided in a simple manner. A further teaching of the invention provides that, by way of the 0 at least one clamping face and the at least one drive, a clamping force for providing the form-fit is able to be applied to the at least one element, said force being substantially orthogonal to the drilling direction or counter to the drilling direction. 15 A further teaching of the invention provides that at least two clamping elements that are provided so as to be substantially vertical and aligned in an opposing manner are in each case provided so as to have at least one clamping face that is disposed so as to be substantially vertical. Particularly 20 accurate positioning can be achieved in a simple and efficient manner as a result. Furthermore, the form-fitting connection is provided in a simple manner. It is advantageous here that the at least two clamping elements 25 by means of at least one drive are in each case able to be moved horizontally from the first position to the second position. A further teaching of the invention provides that the at least one drive is at least one hydraulic cylinder. 30 A further teaching of the invention provides that at least two bracing planes having in each case at least two bracing elements 2021353032   04 Sep 2026 are provided so as to be disposed on top of one another. The form-fitting connection is provided particularly efficiently and reliably in a simple manner as a result. 5 It is advantageous here that the at least one clamping element by way of the at least one substantially vertical clamping face is disposed on at least one bracing element of the lower bracing plane. 0 A further teaching of the invention provides that the bracing member is in contact with the internal wall of the hollow body or housing. A further teaching of the invention provides that the drill head 15 by means of at least one drive is repositionable in relation to the drive in and counter to the drilling direction. It is advantageous here that the drive is at least one hydraulic cylinder, and that the contact pressure force of the drill head 20 on the ground is able to be determined by way of the hydraulic cylinder. As a result, a load control on the drill head can be provided in a simple manner. A further teaching of the invention provides that the drill hole 25 is a substantially vertical drill hole. A further teaching of the invention provides that the drill hole is established in water or by a bore hole filled with a liquid. 30 Also disclosed herein is a system for establishing a drill hole in the ground, having a drilling device described above and a hollow body wherein the hollow body on its internal wall has at 2021353032   04 Sep 2026 least one counter bearing element for establishing a formfitting connection between the main body and the hollow body; wherein the at least one counter bearing element has at least one counter bearing surface; and wherein the at least one counter 5 bearing surface is provided so as to extend perpendicularly from the internal wall of the hollow body. The hollow body may be a pile for founding a building, a casing, a liner or a housing (machine tube) of the drilling device. 0 It is furthermore advantageous here that the hollow body on the internal wall thereof has at least one element for establishing a form-fitting connection between the main body and the hollow body. 15 The at least one element may have a counter bearing face. The counter bearing face may be provided so as to extend perpendicularly from the internal wall of the hollow body. 20 Brief Description of Figures The invention will be explained in more detail hereunder by means of a preferred exemplary embodiment in conjunction with a drawing in which: 25 fig. 1 shows a spatial lateral view of a drilling device according to the invention having a deployed bracing device; 30 fig. 2 shows a spatial lateral view of a drilling device according to the invention disposed in a riser / housing, in a partially sectional view; 2021353032   04 Sep 2026 fig. 3 shows a lateral view of counter bearing elements according to the invention on the internal wall of the riser / housing; 5 fig. 4 shows a lateral view of fig. 3, having an assembled bracing device according to the invention, viewed according to the section plane Z in fig. 1; 0 fig. 5 shows an enlarged view of a fragment X of fig. 4; fig. 6 shows a sectional plan view of the section Y of fig. 4; and 15 fig. 7 shows a spatial view of a drilling tool of the drilling device according to the invention. Detailed Description Fig. 1 and fig. 2 show a drilling device 10 having a main body 20 11. This drilling device 10 in fig. 2 is illustrated in a partially sectional view and inserted in a riser / housing 20. Provided on the lower end 13 of the main body 11 is a drill head 12 which is connected to a drive (not illustrated). Furthermore 25 provided on the drill head 12 is a suction opening 14 (see fig. 7) which is connected to a suction line (not illustrated) which is connected to the main body and to a suction device (not illustrated). Furthermore provided on the drill head are drilling tools 15 and guide plates 16. Furthermore provided are 30 drilling tools 17 which are radially deployable and retractable in the direction of the arrow A and by way of which an undercut 2021353032   04 Sep 2026 below the riser / housing 20 is achieved, as is illustrated in fig. 2. The main body 11 has a bracing device 30 by way of which the 5  drilling device 10 is braced in the riser / housing 20. The bracing device 30 here has at least one bracing plane 31, 32. A preferred embodiment in which the bracing device 30 has two bracing planes 31, 32, i.e. the lower bracing plane 31 and the upper bracing plane 32, is illustrated in figures 1 to 7. The upper bracing 0  plane 32 here preferably has four bracing elements 33, and the lower bracing plane 31 here preferably has four bracing elements 34. Alternative numbers of bracing elements 33, 34 as well as bracing planes 31, 32 are likewise possible, depending on the length of the drilling device 10 or the riser / housing 20 or the 15 geological conditions. The bracing elements 33, 34 are fixedly disposed on the main body 11. Pivotable solutions are likewise possible. 20 Bracing members 35, 36 are provided on the outer end of the bracing elements 33, 34. These bracing members 35, 36, by way of in each case one drive 37, here preferably in each case one hydraulic cylinder, are disposed so as to be movable, i.e. deployable and retractable in the direction of the arrow B. The 25 bracing members 35, 36 in figs. 1, 2 are illustrated when deployed. The bracing members 35, 36 are in each case provided with clamping elements 38, 39. The clamping elements 38, 39 here have 30 clamping faces 40, 41 which by way of at least one drive 42, 43, preferably a hydraulic cylinder, are able to be moved from a first position to a second position. 2021353032   04 Sep 2026 The lower bracing plane 31 having the bracing members 36 here preferably has in each case four clamping elements 39 per bracing member 36, said clamping elements 39 having in each case one 5 clamping face 40 which, by way of a hydraulic cylinder as the drive 42, are disposed so as to be deployable and retractable in the direction of the arrow C in relation to the bracing member 36 (see figs. 4, 5, 6). The clamping elements 39 here are provided so as to be horizontal, and the clamping faces 40 are 0 disposed so as to be vertical. The bracing members 36 here furthermore preferably have four horizontal clamping elements 39, of which two are in each case preferably aligned in one direction, the other two being aligned in the opposite direction. The direction of action of the clamping element 40 is provided 15 so as to be in the circumferential direction about the riser / housing 20. The drilling loads, in particular the torques, can be dissipated as a result. Furthermore, it becomes possible for the form-fitting connection between the main body 11 of the drilling device 10 and the riser / housing 20 to be achieved in a 20 simple manner so as to be effective in the circumferential direction of the riser / housing. The upper bracing plane 32 having the bracing members 35 here preferably has in each case one clamping element 38 per bracing 25 member 35, said clamping element 38 having a crossbar 44 which by way of a drive 43, here preferably in each case two hydraulic cylinders, is connected to the bracing member 35 on the lower side of the bracing member 35. The crossbeam 44 on the outer ends 47 thereof has in each case one clamping face 41 which is 30 provided on that side 46 of the crossbeam 44 that faces the clamping member 35. The crossbeam by way of the drive 43 is able to be moved in the direction of the arrow D away from the bracing 2021353032   04 Sep 2026 member and toward the latter (see fig. 4). The clamping faces 41 here are preferably disposed so as to be horizontal, while the movement of the clamping faces 41 here, by way of the drives 43, preferably takes place vertically. The direction of action of 5 the clamping element 41 is however provided in the drilling direction. As a result, the drilling loads can be dissipated. Furthermore, it becomes possible for the form-fitting connection between the main body 11 of the drilling device 10 and the riser / housing 20 to be achieved in a simple manner so as to be 0 effective in and counter to the drilling direction. The internal wall 21 of the riser / housing 20 has a counter bearing region 50 which here preferably has an upper counter bearing plane 51 and a lower counter bearing plane 52. The latter 15 is illustrated in figs. 3 and 4. The upper counter bearing plane 51 has vertical guide plates 54, introduction ramps 53 being provided on the upper end of said vertical guide plates 54. Horizontal counter bearings 55 which 20 are provided so as to be orthogonal to the guide plates 54 are provided on the lower end of the guide plates 54. The counter bearings 55 are provided with reinforcements 56 which are embodied in the manner of cams, for example. The horizontal counter bearings 55 are embodied in a manner corresponding to 25 that of the clamping faces 41. The clamping faces are braced in relation to the counter bearings 55. The lower counter bearing plane 52 has vertical counter bearings 58, introduction ramps 57 being provided on the upper end of 30 said vertical counter bearings 58. Provided on the lower end of the counter bearings 58 are horizontal contact faces 59 which are provided so as to be orthogonal to the counter bearings 58. 2021353032   04 Sep 2026 The counter bearings 58 and the contact faces 59 are provided with reinforcements 60, 61 which are embodied in the manner of cams, for example. 5 The bracing members 36 are incorporated into the intermediate space 23 between the counter bearings 58 by deploying the lower drives 37. The bracing members 35 are incorporated into the intermediate space 22 between the guide plates 54 by deploying the upper drives 37. The drives 43 of the crossbeams 44 of the 0 clamping elements 38 here are preferably deployed such that the clamping faces 41 can be disposed below the counter bearings 55. The clamping faces 40 by way of the drives 42 thereof are preferably retracted. 15 Furthermore, the clamping members 35, 36 can be deployed so far that the latter contact the internal wall 21. If necessary, it is even possible for the clamping members 35, 36 to be braced in relation to the internal wall. This however 20 is preferably not envisaged. The lower bracing members 36 are optionally placed onto the contact faces 59. 25 In order for the form-fitting connection between the riser / housing 20 and the main body 11 to be established, the clamping faces 40 are deployed horizontally against the counter bearings 58 once the clamping members 35, 36 are disposed. The clamping faces 41 are moved against the counter bearings 55. As 30 a result, a form-fit is effected between the main body 11 and the riser / housing 20. 2021353032   04 Sep 2026 The drilling using the drilling device according to the invention takes place once the main body of the drilling device 10 has been inserted into the riser / into the housing 20 and the riser / the housing 20 has been transferred to the drilling 5 position. The drilling can be carried out from horizontally up to vertically. This is performed either by a feeder unit or by the weight of the drilling device 10 together with the riser / housing 20. 0 Once the drilling is completed, either the form-fitting connection is released in the reversed order as previously described, and the main body 11 is retrieved from the riser / housing 20 once the deployed drilling tools 17 have been retracted in the direction of the arrow A, or the housing 15 conjointly with the main body 11 is retrieved from the bore hole (not illustrated) and left to stand open. It is possible for different riser / housing diameters to be used conjointly with a main body 11 and the apparatuses provided 20 thereon, and also for different matching drill head diameters to be used to this end. In the claims which follow and in the preceding description of the disclosure, except where the context requires otherwise due 25 to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the disclosure. 30 2021353032   04 Sep 2026 List of reference signs 10 Drilling device 11 Main body 12 Drill head 13 Lower end 14 Suction opening 15 Drilling tool 15 Guide plate 17 Drilling tool 20 Riser / housing 21 Internal wall 22 Intermediate space 23 Intermediate space 30 Bracing device 31 Bracing plane 32 Bracing plane 33 Bracing element 34 Bracing element 35 Bracing member 36 Bracing member 37 Drive / hydraulic cylinder 38 Clamping element 39 Clamping element 40 Clamping face 41 Clamping face 42 Drive / hydraulic cylinder 43 Drive / hydraulic cylinder 44 Crossbar 45 End 2021353032   04 Sep 2026 46 Side 50 Counter bearing region 51 Upper counter bearing plane 52 Lower counter bearing plane 53 Introduction ramp 54 Guide plate 55 Counter bearing 56 Reinforcement 57 Introduction ramp 58 Counter bearing 59 Contact face 60 Reinforcement 61 Reinforcement A Direction of arrow B Direction of arrow C Direction of arrow D Direction of arrow X Fragment Y Section plane Z Section plane

Claims

2021353032   04 Sep 2026Patent claims1. A drilling device for establishing a drill hole in the ground, having a main body comprising:5 a drilling tool which is disposed on one end of the main body ,a first drive for the drilling tool that is provided on the main body,a bracing device which is configured to brace the0 drilling device in a cylindrical hollow body, wherein the hollow body comprises an internal wall with at least one counter bearing element,wherein the bracing device has at least one bracing plane having at least two bracing elements with a first end15 disposed on the main body and on a second end at least one bracing member,wherein the at least one bracing member of the at least two bracing elements is configured to be horizontally moved from a first position to a second position, by at least one20 second drive,wherein at least one of the two bracing elements comprises at least one moveable clamping element with at least one clamping surface for providing a form-fit with the at least one counter bearing element is provided on at25 least one of the bracing elements,wherein the at least one clamping surface is moveable by at least one third drive from a first position to a second position, andwherein, by way of the at least one clamping surface and30 the at least one third drive, a clamping force for providing the form-fit is able to be applied to the at least one2021353032   04 Sep 2026counter bearing element, said force being substantially orthogonal to a drilling direction or counter to the drilling direction.

2. The drilling device as claimed in claim 1, wherein thehollow body is a pile for founding a building, a casing, ahousing of the drilling device, or a liner.

3. The drilling device as claimed in claim 1 or 2, wherein themain body is removable from the hollow body.

4. The drilling device as claimed in any one of claims 1 to 3, wherein the clamping surface is provided so as to be substantially vertical or horizontal.

155. The drilling device as claimed in claim 4, wherein the atleast one counter bearing surface extends perpendicularly from the internal wall.20 6. The drilling device as claimed in any one of claims 1 to 5, wherein at least two clamping elements that are provided so as to be substantially vertical and aligned in an opposing manner are in each case provided so as to have at least one clamping surface that is disposed so as to be substantially25 vertical.

7. The drilling device as claimed in claim 6, wherein the at least two clamping elements by means of at least one third2021353032   04 Sep 2026drive are in each case able to be moved horizontally from the first position to the second position.

8. The drilling device as claimed in claim 7, wherein the at5 least one third drive is at least one hydraulic cylinder.

9. The drilling device as claimed in claims 1 to 8, characterized in that at least two bracing planes having in each case at least two bracing elements are provided so as10 to be disposed on top of one another.

10. The drilling device as claimed in claim 9, wherein the at least one clamping element by way of the at least one substantially vertical clamping surface is disposed on at15 least one bracing element of the lower bracing plane.

11. The drilling device as claimed in any one of claims 1 to 10, wherein the bracing member is in contact with the internal wall of the hollow body.2012. A system for establishing a drill hole in the ground, having a drilling device as claimed in one of claims 1 to 11 and a hollow body,wherein the hollow body on its internal wall has at least 25 one counter bearing element for establishing a form-fitting connection between the main body and the hollow body;wherein the at least one counter bearing element has at least one counter bearing surface; and2021353032   04 Sep 2026wherein the at least one counter bearing surface is provided so as to extend perpendicularly from the internal wall of the hollow body.5 13. The system as claimed in claim 12, wherein the at least one counter bearing surface is provided so as to extend perpendicularly from the internal wall of the hollow body.

14. The system as claimed in any one of claims 12 or 13, whereinthe hollow body is a pile for founding a building, a casing,a liner or a housing of the drilling device.

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