Drilling apparatus for establishing a borehole

Abstract

The invention relates to a drilling device (10) for establishing a borehole in the ground, having a base body (11), a drilling tool (15, 17) arranged on one end of the base body (11), a drive for the drilling tool arranged on the base body, a tensioning device (30) which is configured for tensioning the drilling device (10) in a cylindrical hollow body (20), the tensioning device having at least one tensioning level (31, 32) with at least two tensioning elements (33, 34), the tensioning elements being arranged on the base body (11) with a first end and having at least one tensioning body (35, 36) on their second end, the at least one tensioning body of the tensioning elements being movable from a first position to a second position by means of at least one drive (37), wherein the tensioning bodies (35, 36) provide a form-locking connection of the base body to the hollow body by means of at least one element on the inner wall of the hollow body.

Description

Technical Field

[0001] This invention relates to a drilling apparatus for creating boreholes in the ground, the drilling apparatus comprising: a base; a drilling tool disposed at one end of the base; a driver for the drilling tool disposed on the base; and a clamping device designed to clamp the drilling apparatus within a cylindrical hollow body, the clamping device having at least one clamping layer with at least two clamping elements, the clamping elements being disposed at a first end on the base and having at least one clamping body at a second end, the at least one clamping body of the clamping element being movable from a first position to a second position by at least one driver. Furthermore, the invention also relates to a system for creating boreholes in the ground, the system having the aforementioned drilling apparatus combined with a cylindrical hollow body. Background Technology

[0002] When constructing buildings whose foundations are supported in or above the ground, such as underwater, the foundations are constructed in different ways. For monolithic foundations, so-called monopile foundations, i.e., single piles, are widely used. An alternative is a so-called scaffold, which is a pyramidal structure or a tripod structure with multiple foundation points. Such structures are, for example, wind power facilities or bridges.

[0003] According to existing technology, for monopile foundations, a so-called jack-up drilling platform is installed at the construction site, with a swing mechanism on the working plane of the platform. The pile is clamped into the swing mechanism, causing it to rotate from a horizontal to a vertical direction, and then the clamp is released to lower the pile onto the seabed. The pile is then driven into the ground using a tamping mechanism.

[0004] A drilling apparatus is known from WO 2010 / 139380 A1, which descends from a working platform into an upright foundation pile. The drilling apparatus has an arm with a drilling wheel at the end of the arm, which removes ground material located inside or below the drilled pile, thereby lowering the drilled pile into a cavity.

[0005] Drilling apparatus similar to the aforementioned drilling apparatus is also known from WO 2013 / 081455 A1 and WO 2015 / 131984 A1. Such drilling apparatus has a base consisting of two parts that can be moved relative to each other by hydraulic cylinders. An arm is provided on the lower part of the base, and a drill bit is provided at the end of the arm.

[0006] The drill bit is used to loosen and remove the rock / ground located inside or beneath the pile. The housing is secured relative to the pile. For this purpose, a swingable arm is provided, with a securing element at its end. To secure the drilling equipment within the pile, the arm is swinged outward by a hydraulic cylinder until the securing element engages with the pile. The securing devices are respectively located at the upper and lower ends of the housing portion of the drilling equipment. The securing device has been shown to be an area requiring improvement. Summary of the Invention

[0007] The purpose of this invention is to improve the connection between hollow bodies, such as foundation piles or shells / machine tubes, and drilling equipment.

[0008] In terms of drilling equipment, according to the first solution, the purpose of the invention is achieved as follows: the support body provides a form-locking connection between the base and the hollow body by at least one element on the inner wall of the hollow body.

[0009] This allows for a simple yet stable and highly precise connection.

[0010] In another teaching embodiment of the present invention, the hollow body is a pile, sleeve, or liner for a building foundation.

[0011] Advantageously, the substrate can be removed from the hollow body. This allows the hollow body to be drilled into the ground in a simple manner, and the drilling equipment can be retrieved.

[0012] Furthermore, in terms of drilling equipment, the second solution achieves the purpose according to the invention as follows: the hollow body is the housing (machine tube) of the drilling equipment, and the bracing body provides a form-locking connection between the base and the housing through at least one element on the inner wall of the housing.

[0013] Therefore, a detachable yet stable and particularly precise connection between the substrate and the shell can be achieved in a simple manner.

[0014] Advantageously, the base is removable from the housing. Therefore, if necessary, the housing and the base of the drilling equipment can be placed separately into the ground.

[0015] Another teaching of the invention provides that at least one of the supporting elements is provided with at least one clamping element having at least one movable clamping surface for providing form-locking with at least one element, and that the at least one clamping surface is movable from a first position to a second position using at least one actuator. It has been shown that form-locking can thus be provided in a particularly simple manner.

[0016] Advantageously, the clamping surfaces are arranged substantially vertically or horizontally. If the clamping surfaces are horizontally arranged, a form-locking connection can be easily and effectively achieved between the base and the riser / housing of the drilling equipment along or opposite to the drilling direction. If the clamping surfaces are vertically arranged, a form-locking connection can be easily and effectively achieved between the base and the riser / housing in the circumferential direction of the riser / housing.

[0017] Furthermore, it is advantageous that the at least one element is at least one support surface for form-locking achieved by the at least one clamping element. Thus, the clamping elements can be configured to act in the necessary directions with particular simplicity. It is also advantageous that the at least one support surface is configured to extend vertically from the inner wall. This allows the clamping elements to be provided with the necessary support in a simple manner to achieve form-locking.

[0018] Another teaching of the invention provides that clamping force can be applied to the at least one element substantially perpendicular to or opposite to the drilling direction via the at least one clamping surface and the at least one actuator to provide form-locking.

[0019] Another teaching provision of the present invention states that at least two substantially vertically arranged, oppositely oriented clamping elements each have at least one substantially vertically arranged clamping surface. This allows for particularly precise positioning in a simple and efficient manner. Furthermore, a form-locking connection is provided in a simple manner.

[0020] Advantageously, the at least two clamping elements are each capable of being moved horizontally from a first position to a second position by at least one actuator.

[0021] In another teaching of the present invention, the at least one actuator is at least one hydraulic cylinder.

[0022] Another teaching of the present invention provides that at least two supporting layers are each provided with at least two overlapping supporting elements. This provides a particularly effective and reliable form-locking connection in a simple manner.

[0023] Advantageously, the at least one clamping element is disposed on the at least one clamping element of the lower clamping layer with the at least one substantially vertical clamping surface.

[0024] In another teaching embodiment of the present invention, the bracing body is in contact with the inner wall of the hollow body or shell.

[0025] Another teaching of the present invention is that the drill bit can be moved relative to at least one driver in the drilling direction and in the opposite direction to the drilling direction.

[0026] Advantageously, the actuator is at least one hydraulic cylinder, and the clamping force exerted by the drill bit on the ground can be determined by the hydraulic cylinder. This allows for simple load control on the drill bit.

[0027] Another teaching setting of the present invention is that the drill hole is a substantially vertical drill hole.

[0028] Another teaching of the present invention is that the borehole is achieved in water or by using a drill hole filled with liquid.

[0029] Furthermore, the objective according to the invention is achieved by a system for establishing boreholes in the ground, the system having the aforementioned drilling equipment and hollow body.

[0030] The hollow body is preferably a pile, sleeve, liner, or housing (machine tube) for building foundations or drilling equipment.

[0031] Furthermore, it is advantageous at this time that the hollow body has at least one element on its inner wall for establishing a form-locking connection between the base and the hollow body.

[0032] The at least one element preferably has a support surface.

[0033] The support surface is particularly preferably configured to extend vertically from the inner wall of the hollow body. Attached Figure Description

[0034] The present invention will now be described in detail with reference to a preferred embodiment and in conjunction with the accompanying drawings. Wherein:

[0035] Figure 1 A perspective side view of the drilling apparatus according to the invention, showing the extension of the tensioning device, is shown.

[0036] Figure 2 A perspective side view of the drilling apparatus according to the invention, arranged in a riser / casing, is shown in a partially sectional view.

[0037] Figure 3 A side view of the support element according to the invention on the inner wall of the riser / casing is shown.

[0038] Figure 4 Show Figure 3 According to Figure 1 The Z-side view in the figure shows the tensioning device according to the invention installed.

[0039] Figure 5 Show Figure 4 A magnified partial image X,

[0040] Figure 6 Show Figure 4 The top view of the section plane Y, and

[0041] Figure 7 A perspective view of the drilling tool of the drilling apparatus according to the present invention is shown. Detailed Implementation

[0042] Figure 1 and Figure 2 A drilling apparatus 10 with a base 11 is shown. Figure 2 The drilling equipment is shown partially cut open in the image, with the equipment inserted into the riser / housing 20.

[0043] A drill bit 12 is provided on the lower end 13 of the base 11, and the drill bit is connected to a driver (not shown). Furthermore, a suction port 14 is provided on the drill bit 12 (see...). Figure 7 The suction port is connected to a suction pipe (not shown) connected to the base, and the suction pipe is connected to a suction device (not shown). Furthermore, the drill bit is equipped with a drilling tool 15 and a guide plate 16. Additionally, a drilling tool 17 that can extend and retract radially in the direction of arrow A is provided, through which lower cutting is achieved below the riser / housing 20, such as in... Figure 2 As shown in the diagram.

[0044] The base 11 has a clamping device 30, which clamps the drilling equipment 10 within the riser / housing 20. Here, the clamping device 30 has at least one clamping layer 31, 32. Figures 1 to 7 A preferred embodiment is shown, wherein the tensioning device 30 has two tensioning layers 31 and 32, namely a lower tensioning layer 31 and an upper tensioning layer 32. Here, the upper tensioning layer 32 preferably has four tensioning elements 33, and the lower tensioning layer 31 preferably has four tensioning elements 34. Other numbers of tensioning elements 33, 34 and tensioning layers 31, 32 may be selected depending on the length of the drilling equipment 10 or the riser / shell 20 or the geological conditions.

[0045] The tensioning elements 33 and 34 are fixedly mounted on the base 11. Alternatively, a swingable solution can also be used.

[0046] Supporting bodies 35 and 36 are provided on the outer ends of the supporting elements 33 and 34. These supporting bodies are configured to extend and retract movably in the direction of arrow B via a driver 37, preferably a hydraulic cylinder. Figure 1 , 2 In the middle, the support bodies 35 and 36 are shown in an extended state.

[0047] The support bodies 35 and 36 are respectively provided with clamping elements 38 and 39. Here, the clamping elements 38 and 39 have clamping surfaces 40 and 41, which can be moved from a first position to a second position by at least one actuator 42 and 43 (preferably a hydraulic cylinder).

[0048] The lower support layer 31 with support bodies 36 preferably has four clamping elements 39 for each support body 36, each clamping element having a clamping surface 40, the clamping surface being configured to extend and retract relative to the support body 36 in the direction of arrow C by a hydraulic cylinder acting as an actuator 42 (see...). Figure 4 , 5 6). Here, the clamping elements 39 are horizontally arranged, and the clamping surfaces 40 are vertically arranged. Furthermore, the support body 36 preferably has four horizontal clamping elements 39, wherein every two clamping elements are preferably oriented in one direction, while the other two clamping elements are oriented in opposite directions. The direction of action of the clamping elements 39 is circumferentially arranged relative to the riser / housing 20. This can counteract the load of drilling, especially the torque. Furthermore, a form-locking connection can be effectively achieved in a simple manner between the base 11 of the drilling equipment 10 and the riser / housing 20 along the circumference of the riser / housing.

[0049] The upper tensioning layer 32 of the tensioning body 35 here preferably has a clamping element 38 for each tensioning body 35. The clamping element has a crossbeam 44, which is connected to the tensioning body 35 on the lower side by a driver 43, preferably two hydraulic cylinders. The crossbeam 44 has a clamping surface 41 on its outer end 47, which is disposed on the side 46 of the crossbeam 44 facing the tensioning body 35. The crossbeam can be moved away from and towards the tensioning body in the direction of arrow D by the driver 43 (see...). Figure 4 The clamping surface 41 is preferably arranged horizontally, and its movement is preferably achieved vertically by the actuator 43. However, the clamping element 38 is positioned in the drilling direction. This can counteract the load of the drilling. Furthermore, a form-locking connection can be achieved efficiently and simply between the base 11 and the riser / housing 20 of the drilling equipment 10, both along the drilling direction and opposite to it.

[0050] The inner wall 21 of the riser / shell 20 has a support region 50, which preferably has an upper support layer 51 and a lower support layer 52. The support layer... Figure 3 and Figure 4 As shown in the image.

[0051] The upper support layer 51 has a vertical guide plate 54, with an inclined surface 53 at its upper end. A horizontal support 55 is provided at the lower end of the guide plate 54, the support being perpendicular to the guide plate 54. The support 55 is fitted with a reinforcing part 56, which is designed, for example, as a bracket. The horizontal support 55 is designed to correspond to a clamping surface 41. The clamping surface clamps onto the support 55.

[0052] The lower support layer 52 has a vertical support 58, with an inclined surface 57 at the upper end of the support. A horizontal bracket 59 is provided at the lower end of the support 58, the bracket being arranged at a right angle to the support 58. The support 58 and the bracket 59 are provided with reinforcing parts 60 and 61, the reinforcing parts being designed, for example, as brackets.

[0053] The extension of the lower actuator 37 introduces the support body 36 into the intermediate space 23 between the supports 58. The extension of the upper actuator 37 introduces the support body 35 into the intermediate space 22 between the guide plates 54. At this time, the actuator 43 of the crossbeam 44 of the clamping element 38 preferably extends, so that the clamping surface 41 can be positioned below the support 55. The clamping surface 40, together with its actuator 42, preferably retracts.

[0054] Furthermore, the support bodies 35 and 36 can extend to the extent that the support bodies contact the inner wall 21.

[0055] If necessary, the support elements 35 and 36 can even be tightened to the inner wall. However, this is not the preferred arrangement.

[0056] If necessary, the lower support 36 is placed on the bracket 59.

[0057] To establish a form-locking connection between the riser / shell 20 and the base 11, after the bracing bodies 35 and 36 are installed, the clamping surface 40 extends horizontally toward the support 58. The clamping surface 41 moves toward the support 55. This achieves a form-locking connection between the base 11 and the riser / shell 20.

[0058] After the base of the drilling device 10 is inserted into the riser / housing 20 and the riser / housing 20 is moved to the drilling position, drilling is performed using the drilling device according to the invention. Drilling can be performed from horizontal to vertical. This can be done by the feed unit or by the weight of the drilling device 10 along with the riser / housing 20.

[0059] After drilling is completed, loosen the locking connection in the reverse order of what was described above, and after retracting the extended drilling tool 17 in the direction of arrow A, remove the base 11 from the riser / housing 20, or remove the housing together with the base 11 from the borehole (not shown) and leave it open.

[0060] By utilizing the base 11 together with the device mounted thereon, different riser / casing diameters can be used, and for this purpose, different drill bit diameters that match them can also be used.

[0061] List of reference numerals

[0062] 10 Drilling equipment

[0063] 11 Matrix

[0064] 12 drill bits

[0065] 13 Lower end

[0066] 14 Suction opening

[0067] 15 Drilling tools

[0068] 16 Guide Plates

[0069] 17 Drilling tools

[0070] 20 Riser / Shell

[0071] 21 Inner wall

[0072] 22 Intermediate Space

[0073] 23 Intermediate Space

[0074] 30. Tensioning device

[0075] 31. Tightening layer

[0076] 32. Tightening layer

[0077] 33. Supporting elements

[0078] 34. Supporting elements

[0079] 35. Support body

[0080] 36. Support body

[0081] 37 Actuator / Hydraulic Cylinder

[0082] 38 Clamping elements

[0083] 39 Clamping elements

[0084] 40 Clamping surface

[0085] 41 Clamping surface

[0086] 42 Actuators / Hydraulic Cylinders

[0087] 43 Actuator / Hydraulic Cylinder

[0088] 44 Crossbeam

[0089] 45 end

[0090] 46 Side View

[0091] 50 Support area

[0092] 51 Upper support layer

[0093] 52 Lower Support Layer

[0094] 53. Introducing an inclined plane

[0095] 54 Guide Plate

[0096] 55 supports

[0097] 56. Reinforcement Section

[0098] 57. Introducing an inclined plane

[0099] 58 supports

[0100] 59 brackets

[0101] 60 Reinforcement Section

[0102] 61 Reinforcement Section

[0103] A. Arrow direction

[0104] B Arrow direction

[0105] C Arrow direction

[0106] D Arrow direction

[0107] X Local

[0108] Y-section

[0109] Z-section.

Claims

1. A drilling apparatus for establishing a borehole in the ground, the drilling apparatus comprising: a base (11); a drilling tool disposed at one end of the base (11); a driver for the drilling tool (15) disposed on the base; and a clamping device configured to clamp the drilling apparatus (10) in a cylindrical hollow body (20) and having at least one clamping layer (31, 32), the cylindrical hollow body (20) having an inner wall (21) and at least one element disposed on the inner wall (21). (51, 52), the at least one tensioning layer (31, 32) has at least two tensioning elements (33, 34), the tensioning elements being disposed on the base (11) at a first end, and the tensioning elements having at least one tensioning body (35, 36) at their second end, the at least one tensioning body (35, 36) of the tensioning element (33, 34) being movable from a first position to a second position by at least one actuator (37), and the tensioning body being configured to be in contact with the inner wall (21), characterized in that, At least one clamping element (38, 39) with at least one clamping surface (40, 41) is provided on the support body (35, 36), and the clamping element (38, 39) can be moved from a first position to a second position by at least one additional actuator (42, 43), in which the at least one clamping surface (40, 41) is connected to at least one element (51, 52) on the inner wall (21) of the hollow body (20) in order to provide a form-locking connection between the base (11) and the hollow body (20).

2. The drilling equipment according to claim 1, characterized in that, The hollow body (20) is a pile, casing or liner for the foundation of a building or the housing of the drilling equipment (10).

3. The drilling equipment according to claim 1 or 2, characterized in that, The substrate (11) can be removed from the hollow body (20).

4. The drilling equipment according to claim 1 or 2, characterized in that, The clamping surfaces (40, 41) are configured to be vertical or horizontal.

5. The drilling equipment according to claim 1 or 2, characterized in that, The at least one element (51, 52) is at least one support surface (55, 58) for form-locking achieved by the at least one clamping element (38, 39).

6. The drilling equipment according to claim 5, characterized in that, The at least one support surface (55, 58) is configured to extend vertically from the inner wall (21).

7. The drilling equipment according to claim 1 or 2, characterized in that, The at least one clamping surface (40, 41) and the at least one additional actuator (42, 43) can apply clamping force to the at least one element (51, 52) at a right angle to or opposite to the drilling direction to provide form-locking.

8. The drilling equipment according to claim 1 or 2, characterized in that, At least two vertically arranged, oppositely oriented clamping elements (38, 39) are each provided with at least one vertically arranged clamping surface (40, 41).

9. The drilling equipment according to claim 8, characterized in that, The at least two clamping elements (38, 39) can be moved horizontally from the first position to the second position by at least one additional actuator (42, 43).

10. The drilling equipment according to claim 1 or 2, characterized in that, The at least one additional actuator (42, 43) is at least one hydraulic cylinder.

11. The drilling equipment according to claim 1 or 2, characterized in that, At least two support layers (31, 32) are each provided with at least two support elements (33, 34) that are stacked on top of each other.

12. The drilling equipment according to claim 11, characterized in that, The at least one clamping element (39) is disposed on at least one clamping element (34) of the lower clamping layer (31) with the at least one vertical clamping surface (40).

13. A system for establishing a borehole in the ground, the system having a drilling device (10) according to any one of claims 1 to 12 and a hollow body (20), the hollow body (20) having at least one element (51, 52) on its inner wall (21) for establishing a form-locking connection between the base (11) and the hollow body (20).

14. The system according to claim 13, characterized in that, The at least one element (51, 52) has a support surface (55, 58).

15. The system according to claim 14, characterized in that, The at least one support surface (55, 58) is configured to extend vertically from the inner wall (21) of the hollow body (20).

Images