Drilling tool and drilling process

Abstract

Drilling tool (1) for drilling a wall (P) made of reinforced concrete, comprising: a mobile carriage (2) having a frame (3) and wheels (4), a drill (5) having a removable concrete drill bit (6) for drilling, a support interface (7) fixed to the frame (3), on which the drill (5) is mounted, the support interface (7) being movable in translation relative to the frame (3) between a non-operational position and a drilling position. Figure 1

Description

Title of the invention: Drilling tool and drilling method technical field

[0001] This disclosure relates to the field of tools required on construction sites. It relates more specifically to a drilling tool and a method for drilling a wall using such a tool. Previous technique

[0002] When constructing a structure with a horizontal reinforced concrete slab containing steel reinforcement and a wall forming one or more vertical walls, either cast in place or constructed using traditional formwork, it is necessary to secure the slab to the walls. The walls generally extend below the level of the slab. For example, in the case of an underground basin, the walls are cast in place, and then excavation is carried out along the cast wall down to the level of the slab. Next, a hole is drilled, the slab reinforcement is placed, and then the slab concrete is poured.

[0003] When the vertical wall(s) is / are cast, a portion of the metal reinforcement protruding from the vertical wall(s) is generally left exposed to allow for attachment to the foundation slab when it is subsequently constructed. However, this solution cannot be implemented when the vertical wall(s) is / are constructed using shotcrete over metal reinforcement. In such a case, a different procedure is necessary. Holes are drilled through the vertical wall to insert embedded reinforcing bars or dowels into the drilled holes that protrude from the vertical wall and are then connected to the foundation slab during its construction.

[0004] It is known that holes can be drilled manually using a hammer drill, with the drawbacks associated with this entirely manual solution, including strain on the operator who experiences vibrations and must carry the drill, a lack of stability leading to accelerated wear of the concrete drill bits used in the drill, a risk of piercing the metal reinforcement contained in the vertical wall, and a significant amount of time spent drilling. An ergonomic problem can also be added due to the position of the foundation slab relative to the excavation, which is 30 cm high.

[0005] The use of automatic drilling robots may not be suitable, for example due to the circularity of the vertical wall, the working environment, the costs incurred, or the absence of digital 3D enabling the programming of the robot.

[0006] There is therefore a need to facilitate and improve the drilling of a vertical wall, in order to fix the foundation slab to the vertical wall. Summary

[0007] This disclosure improves the situation.

[0008] A drilling tool is proposed for drilling a wall made of reinforced concrete, comprising: a. a mobile cart comprising a chassis and wheels, b. a hammer drill with a removable concrete drill bit for drilling, c. a support interface attached to the chassis, on which the drill is fixed, the support interface being movable in translation relative to the chassis between a non-operational position and a drilling position.

[0009] A wheeled trolley is thus provided, which can be moved by an operator and carries the drill for drilling holes in the wall. The drill can be moved to drill the wall using the support interface that carries it and which is movable in translation relative to the chassis. The tool allows for more reliable drilling thanks to the precise positioning of the drill. The tool also allows the operator to perform the drilling with reduced strain and amplified force. Furthermore, the tool improves the stability of the drill and thus reduces wear on the concrete drill bit. The time required to drill the wall can also be reduced thanks to the tool.

[0010] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0011] The frame may include a pair of longitudinal guide lines, in particular a pair of longitudinal slides. In this case, the support interface may include, laterally to the drill, guide pieces configured to be guided in longitudinal movement respectively in each longitudinal guide line so as to allow translational mobility of the support interface relative to the guide lines and thus to the frame. The guide pieces may be selected from the group consisting of a slide, a roller, a bearing, a pad, a simple shaft, and any element facilitating sliding.

[0012] The chassis, in particular the longitudinal guide lines of the chassis, can be configured such that the support interface and the drill can be tilted relative to the chassis by a predetermined non-zero angle, the predetermined angle being in particular between -90° and +90°. The guide lines can in particular be configured to be tilted relative to the rest of the chassis, thereby causing the support interface and the drill to tilt.

[0013] To do this, the frame may include a plurality of vertical posts, in particular at least four posts, arranged two by two opposite each other, in pairs, external to the longitudinal guide lines.

[0014] The drilling tool may include an axis connecting the guide lines, directly or indirectly, perpendicularly to them. The axis is advantageously rotatably fixed to two uprights of a pair such that rotation of the axis can cause the guide lines to tilt, resulting in a tilting of the support interface and the drill relative to the frame. Thus, the orientation of the drill bit, downwards or upwards, can be adjusted by tilting it around the axis, according to a predetermined angle.

[0015] The wheels, in particular four of them, can be configured to allow the carriage to be tilted by rotation about the two axes of a horizontal plane. They can thus contribute to leveling if the ground is uneven or provide additional tilting to the drill.

[0016] The frame may include a pair of first uprights at the front and a pair of second uprights behind the first uprights, at a distance from them. This allows the axle to be secured to either the pair of first uprights or the pair of second uprights, as preferred. This choice may be guided by the predetermined angle for tilting the drill. The first and second uprights may be positioned at or near the ends of the guide lines. Alternatively, the second uprights may be positioned at a central portion of the guide lines.

[0017] The uprights are preferably configured to allow height adjustment of the axis relative to the uprights of said pair. This can allow adjustment of the height of the guide lines and / or the perforation height, whether horizontal or inclined at a predetermined angle.

[0018] The uprights of another pair of uprights, which do not carry the axis, advantageously each have a plurality of openings, preferably through, which can receive a removable pin system to support a longitudinal guide line tilted with said predetermined angle.

[0019] The uprights of the pair of uprights that support the axle may also have a plurality of openings for fixing the axle at different heights and thus adjusting the axle's height. For fixing the rotation axle in front of the carriage, the latter may have a washer on one side that blocks the axle's translation within the upright and a pin on the other side.

[0020] The combination of height adjustment and openings to receive a pin system allows for a large number of orientations of the drill relative to the wall to be drilled, in order to make the hole(s) with the correct orientation and height.

[0021] The drilling tool may, in one example, comprise a second drill bit with a removable concrete drill bit for making a second hole. In this In this case, the support interface can also carry the second drill and secure it to the frame. The second drill is preferably positioned next to the first drill, that is, parallel to and at the same height as the first drill, which then becomes the primary drill, and is fixed to the support interface during movement. In this configuration, the second drill is capable of drilling a hole parallel to the first drill's hole. The presence of a second drill allows, for example, the simultaneous and precise drilling of two holes with the same orientation, or the replacement of one drill's masonry bit with a guide, and the insertion of the guide into an existing hole while a new hole is being drilled using the other drill's masonry bit. In this latter case, the guide allows for the precise guidance of the adjacent hole.Finally, as an alternative, two superimposed and offset holes can be made using two drills.

[0022] The drilling tool may include a control lever configured to control the translational movement of the support interface relative to the frame. Such a control lever may, for example, include a lever bar, three connecting pivots, and at least two arms connected on one side to the lever bar and on the other side, respectively, to the support interface and the frame, via the connecting pivots. Such a control lever can be easily manipulated by the operator to adjust the positioning of the drill relative to the frame.

[0023] The drilling tool may include a mechanism for locking the wheels in a given position.

[0024] According to another aspect, in combination with the above, a method for drilling a wall, in particular a vertical one, is proposed, employing the drilling tool as defined above, comprising: a. Position the trolley in front of the wall, b. Adjust the positioning of the drill relative to the frame, by adjusting the positioning of the support interface relative to the frame, in order to create a hole at a predetermined location, orientation, and depth. c. drill the hole using the drill.

[0025] When the drilling tool includes a second drill bit, the process may include: drilling a second hole using the second drill bit, in particular simultaneously with the first hole.

[0026] Alternatively, the presence of a second drill can allow, during the implementation of the process, for a guide to be placed in place of the concrete drill bit in the second drill, and position said guide in a hole already drilled while drilling the hole using the drill.

[0027] This can improve the positioning of the drill hole, thanks to the guide. The guide can be in the form of a cylindrical rod, for example, with a diameter smaller than that of the concrete drill bit.

[0028] When the drilling tool has a control lever, the adjustment of the positioning of the drill relative to the chassis, in particular the translational adjustment of the drill, is advantageously implemented using the control lever.

[0029] The method may include setting the wheels to an orientation substantially perpendicular to the drilling plane and locking the wheels in this orientation using the wheel locking mechanism. This can create a counter-thrust during drilling.

[0030] The implementation of the process is carried out in whole or in part by an operator manipulating the drilling tool. Brief description of the drawings

[0031] Other features, details and advantages will become apparent upon reading the detailed description below, and upon analysis of the accompanying drawings, on which:

[0032] [Fig-1] shows a diagram of the drilling tool in side view according to an example.

[0033] [Fig.2] schematically shows the implementation of the drilling tool of [Fig.1].

[0034] [Fig.3] is a partial and schematic cross-sectional view of an example drilling tool.

[0035] [Fig.4] shows schematically and in perspective, partially, an example of a tool drilling.

[0036] [Fig.5] shows a side view diagram of the drilling tool according to an example.

[0037] [Fig.6] shows schematically and in partial side view, the drilling tool according to an example, after tilting downwards.

[0038] [Fig.7] shows schematically and in partial side view, the drilling tool according to an example, after tilting upwards.

[0039] [Fig.8] schematically shows, in cross-section, an example of a tank made in implementing an example of a drilling process.

[0040] [Fig.9] shows a detail IX of [Fig.8].

[0041] [Fig. 10] schematically shows, in cross-sectional view, another example of a tank made by implementing an example of a drilling process.

[0042] [Fig. 11] schematically shows in side view a control lever of an example of a drilling tool.

[0043] [Fig. 12] schematically shows, in side view, the control lever of the [Fig.l 1] after actuation of the lever arm.

[0044] [Fig. 13] is a partial, schematic cross-sectional view of an example drilling tool.

[0045] [Fig. 14] schematically shows the making of drill holes using a example of a two-perforated drilling tool.

[0046] [Fig. 15] schematically shows the making of drill holes using a example of a two-perforated drilling tool.

[0047] [Fig. 16] schematically shows the making of drill holes using a example of a two-perforated drilling tool.

[0048] [Fig. 17] schematically shows the making of a drilled hole using a example of a two-perforated drilling tool.

[0049] [Fig. 18] is a schematic side view of an example of a drilling tool, shown without a drill.

[0050] [Fig. 19] is a schematic perspective view of the drilling tool of the [Fig. 18] Viewed from the front and side.

[0051] [Fig.20] is a schematic perspective view of the drilling tool of [Fig. 18] Front view.

[0052] [Fig.21] is a schematic front view of the drilling tool of [Fig. 18]. Description of the implementation methods

[0053] The drawings and description below contain, essentially, elements of a definite nature. They may therefore not only serve to better understand this disclosure, but also contribute to its definition, if necessary.

[0054] In the various figures, the same reference numerals designate identical or similar elements. For the sake of brevity, only the elements that are useful for understanding the described embodiment are shown in the figures and are described in detail below.

[0055] In the following description, when reference is made to absolute position qualifiers, such as the terms "front", "back", "top", "bottom", "left", "right", etc., or relative position qualifiers, such as the terms "above", "below", "superior", "lower", etc., or to orientation qualifiers, such as "horizontal", "vertical", etc., reference is made, unless otherwise specified, to the orientation of the figures or of the drilling tool in its normal position of use.

[0056] Reference is now made to [Fig. 1]. This figure shows an example of a drilling tool 1 for drilling a wall made of reinforced concrete. The drilling tool 1 comprises a movable carriage 2 having a frame 3 and wheels 4, four in number in this example, two of which are visible in this figure. on which rests the chassis 3. The chassis 3 is mounted on wheels 4 to allow the carriage 2 to move. The drilling tool 1 also includes a hammer drill 5 with a removable concrete drill bit 6 for drilling. The drilling tool 1 also includes a support interface 7 attached to the chassis 3, to which the hammer drill 5 is fixed. The support interface 7 is movable relative to the chassis 3 between a drilling position and a non-operational position. The drilling position is a forward position of the hammer drill 5, allowing, as illustrated, the concrete drill bit 6 to protrude forward of the carriage to perform the drilling. The non-operational position is a rearward position of the hammer drill 5, preventing drilling. In this position, not illustrated, the concrete drill bit 6 does not protrude from the carriage, for example.

[0057] In the illustrated example, the concrete drill bit 6 extends parallel to the direction O of movement of the support interface 7, illustrated by the arrows, which also corresponds to the longitudinal axis X of the drill 5.

[0058] As illustrated in [Fig. 2], during the use, and therefore the implementation, of the drilling tool to perform a drilling process, an operator brings the carriage 2 close to the vertical wall P to be drilled, this wall being, in this example, the circular wall of a tank, made of reinforced concrete. The operator can then position the drilling tool 1 relative to the wall P and move the drill 5 forward, by moving the support interface 7, into the drilling position, so as to perform the drilling with the concrete drill bit 6. After drilling the hole, the operator moves the support interface 7 backward relative to the frame 3, so as to put the drill 5 in the non-operational position. The drill 5 can be powered by a generator set G, as illustrated in [Fig. 2]. Alternatively, the drill 5 can be powered by a battery, which can be integrated into the drill 5 or the trolley 2.

[0059] In the example illustrated in [Fig. 3] as in that illustrated in [Fig. 4], the frame comprises a pair of longitudinal guide lines 10. Each guide line 10 may include, for example, a slide, a rail, or a rack. The guide lines 10 extend along the longitudinal axis X. They extend on either side of the punch 5, laterally and externally. The support interface 7 is connected to the guide lines 10 so as to be movable in translation relative to them. The guide lines 10 are fixed relative to the rest of the frame 3.

[0060] To move the support interface 7 back and forth relative to the guide lines 10, as illustrated in Figures 3 and 4, the support interface 7 comprises, for example, laterally to the drill 5, guide pieces 11 configured to move, in a guided manner, respectively, along the guide lines 10 in order to allow translational movement of the support interface 7 relative to the chassis 3. Each guide piece 11 may include a roller, a slide, or a gear. In another example not shown, the movement of the guide pieces 11 may be a sliding motion by translation or a rolling motion by rotation. In particular, if the guide line 10 has a slide, the guide piece 11 may include a roller rolling in the slide, or a slide that moves in the slide. When the guide line 10 has a rail, the guide piece 11 may include a slide that moves on the rail or a gear that moves on the rail. When the guide line 10 has a toothed rod, or rack, the guide piece 11 may include a gear, or pinion, whose teeth, when it rotates, mesh with the teeth of the rack.

[0061] In the example of [Fig. 4], the support interface 7 comprises a support plate 12 on which the drill 5 rests, as well as two flanges 13 attached to the support plate 12, a front flange 13a and a rear flange 13b, for fixing and holding the drill 5 on the support plate 12. Other methods of fixing the drill 5 are possible. The support interface 7 also comprises lateral arms 14 on either side, namely a lateral arm 14a and a lateral arm 14b, supporting the guide pieces 11 at their respective ends.

[0062] As illustrated in the example in [Fig. 5], the frame 3 and the guide lines 10 are configured so that the support interface 7 and the drill 5 can be tilted relative to the frame by a predetermined non-zero angle, the predetermined angle being in particular between -90° and +90°. To this end, the frame 3 comprises a plurality of vertical uprights 16, in particular at least four uprights as in the illustrated example, even though only two uprights are visible in [Fig. 5], arranged in pairs opposite each other, external to the guide lines 10 and arranged to form a rectangle, each upright occupying a corner of the rectangle in this example. Furthermore, the drill tool 1 comprises an axis 15 connecting the guide lines 10, directly or indirectly, directly in this example, perpendicularly to them. The axis 15 is therefore fixed to the guide lines 10.The axis 15 is rotatably fixed to two uprights 16 of a pair such that the rotation of the axis 15, as illustrated by the arrow in [Fig. 5], causes the guide lines 10 to tilt, resulting in the support interface 7 and therefore the drill bit 5 tilting by an angle A with respect to the horizontal axis. This angle is, for example, 30° or 45°, as in the two examples shown in dashed lines in [Fig. 5], but can be different, notably between -90° and +90°. This allows the concrete drill bit to be tilted at the desired angular orientation, for example, downwards to perform the drilling. The translation of the support interface 7 will allow it to move into a drilling position, with the desired angle of inclination, to perform the drilling.

[0063] In the illustrated example, the pair of uprights 16 carrying the axle 15 is the front pair. In another example, the pair of uprights 16, which is the rear pair, can receive the axle 15, in which case the rotation will take place with respect to this rear pair.

[0064] Figure 6 illustrates the case where the support interface 7, and therefore the drill 5, is tilted at an angle of -90°, allowing vertical drilling downwards. Figure 7 illustrates the case where the support interface 7, and therefore the drill 5, is tilted at an angle of +90°, allowing vertical drilling upwards.

[0065] Figures 8 and 9 show an example of the implementation of the drilling process using the drilling tool 1.

[0066] First, the construction site is started without the use of the drilling tool 1. A vertical wall P is constructed, forming in this example a circular wall made of shotcrete on a metal reinforcement, in a pit to form a tank. The soil inside the tank, in space E, is then removed. A lean concrete layer B is then laid at the bottom, and micropiles M are installed.

[0067] Then the foundation slab R is prepared. For this, the wall P is drilled, in particular all around its perimeter, at predefined intervals.

[0068] It is for this part of the construction site that the drilling tool 1 is used. The drilling method for wall P consists of positioning the carriage 2 in front of wall P. During the implementation of the method, the orientation of the wheels can be adjusted substantially perpendicular to the drilling plane and locked in this orientation using the wheel locking mechanism, so as to create a counter-thrust during drilling.

[0069] Next, the positioning of the drill 5 relative to the frame 3 is adjusted by adjusting the positioning of the support interface 7 relative to the frame, in order to create a hole at a predetermined location, orientation, and depth. The translational mobility of the support interface 7 is used, and optionally, as in this example, its rotational mobility around the axis 15. Finally, the hole is drilled using the drill 5. The drill is moved during drilling by the handle 30, and the force is multiplied by a mechanical lever arm. These steps can, of course, be repeated as many times as necessary to drill all the desired holes in the wall P. In the illustrated example, as seen in [Fig. 9], a horizontal hole T1 was drilled, and a downward-angled hole T2 was also drilled.

[0070] Next, to continue and / or complete the construction, spits or anchors are fixed to the reinforcement F of the foundation slab R in the holes made. The reinforcement cage is put in place and connected to the anchors and micropiles, if present.

[0071] Finally, the foundation slab R is poured into the concrete slab. This results in the tank C, open at the top of [Fig. 8]. In a particular example, the tank C may have a diameter of approximately 20 m. The depth of the tank may be approximately 12 m below ground level S, and the height of the vertical wall P may be approximately 25 m.

[0072] In the example of [Fig. 10], the process begins by constructing the vertical wall P partially in the ground, followed by the upper slab D, using the drilling tool 1 as explained above. Anchors are then attached to the reinforcement of slab D, and slab D is concreted. Next, the excavation in space E is carried out, and then the lower slab I is constructed in the same manner as the upper slab D or the foundation slab R, again using the drilling tool 1. In this example, the tank C thus constructed and illustrated in [Fig. 10] is closed, circular, and partially below ground level S. The upper slab can be excavated beforehand; in this case, a capping beam is constructed around the circumference of the walls to facilitate access.

[0073] As illustrated in Figures 11 and 12, the drilling tool 1 may include a control lever 30 configured to control the translational movement of the support interface 7 relative to the frame 3. In this case, the control lever 30 may include, as illustrated in these figures, a lever bar 31, three connecting pivots 32, 33 and 34 and at least two arms 35 and 36 connected on the one hand to the lever bar 31 and on the other hand to the support interface 7 and the frame 3, respectively, via the connecting pivots 32, 33 and 34, as illustrated.

[0074] By pushing the lever bar 31, the operator enables the forward translation of the support interface 7 relative to the frame 3, as illustrated in [Fig. 12]. The pivot 34 is advantageously fixed to the frame 3, or to the control line 10 fixed to the frame 3. The pivot 33 is advantageously fixed to the support interface 7. The positioning of the drill 5 relative to the frame 3 is adjusted using the control lever 30.

[0075] The drilling tool 1 can, as in the example illustrated in [Fig. 13], include a second drill bit 25 with a removable concrete drill bit 26 for drilling a second hole. In the illustrated example, the support interface 7 carries the second drill bit 25 and secures the second drill bit 25 to the frame 3, for example by means of flanges 13a and 13b like those shown in [Fig. 4]. The second drill bit 25 is positioned next to the drill bit 5 on the support plate 12 and is fixed, during movement, to the support interface 7 and therefore to the drill bit 5.

[0076] When the drilling tool 1 has a second drill bit, a second hole can be drilled using the second drill bit 25, in particular simultaneously with the first hole made by the drill bit 5. Figures 14, 15 and 16 illustrate this. simultaneous drilling of holes, adjacent on a horizontal line in the example of [Fig.14], adjacent on a vertical line in the example of [Fig.15], and adjacent on a diagonal line in the example of [Fig.16]. In these last two cases, the relative position of the drills will of course be adapted within the tool.

[0077] In the example of [Fig. 17], a guide 27 is placed in place of the concrete drill bit 26 in the second hammer drill 25, and the guide 27 is positioned, as illustrated, in a hole already drilled during the drilling of the hole using the hammer drill 5. In this example, the guide 27 is in the form of a cylindrical rod, as illustrated. This makes it possible to drill at a very precise location, thanks to the guide 27, and in particular to drill at regular intervals. Furthermore, the risk of puncturing reinforcement is reduced, or even eliminated.

[0078] Figures 18 to 21 show another example of a drilling tool 1. In this example, the drilling tool 1 has four wheels 4 supported by vertical uprights 40 separate from the uprights 16 and arranged in a rectangle so as to externally surround the rest of the frame 3. The drilling tool 1 in this example includes a wheel locking mechanism configured to lock the wheels, particularly with a given angular orientation, in order to provide counter-pressure during drilling. The operator can use this locking mechanism when the carriage is in position for drilling. The counter-pressure is achieved by orienting the free wheels at 90°. Wheels with brakes can be installed in a manner known per se.

[0079] The uprights 40 are connected by a horizontal frame 41 to the uprights 16 and to additional uprights 46 arranged at the rear of the carriage 2.

[0080] In this example, the uprights 16 on which the shaft 15 is mounted are configured to allow height adjustment of the shaft 15. Such adjustment can be made by adjustment increment 42 by inserting a pinned shaft fixed relative to the upright 16, sliding in the groove present on the support interface 7.

[0081] These uprights 16 are first uprights 16a arranged at the front of the carriage 2, in this example. Second uprights 16b are arranged at a central portion of the guide lines 10, also in this example.

[0082] The uprights 16 that do not carry the axis 15, in this example the second uprights 16b, each have a plurality of openings 42 that can receive removable pins 43 to support a guide line 10 tilted at said predetermined angle. Other fastening systems than openings and removable pins may be considered.

[0083] The wall, in particular the vertical wall, may not be circular but straight.

Claims

Demands

1. Drilling tool (1) for drilling a wall (P) made of reinforced concrete, comprising: a. a mobile carriage (2) having a chassis (3) and wheels (4), b. a drill (5) having a removable concrete drill bit (6) for carrying out the drilling, c. a support interface (7) integral with the chassis (3), on which the drill (5) is fixed, the support interface (7) being movable in translation relative to the chassis (3) between a non-operational position and a drilling position.

2. Drilling tool (1) according to claim 1, wherein the frame (3) has a pair of longitudinal guide lines (10), and wherein the support interface (7) has laterally to the drill (5) guide pieces (11) configured to be guided in longitudinal movement respectively in each longitudinal guide line (10) so as to allow translational mobility of the support interface (7) relative to the frame (3).

3. Drilling tool (1) according to claim 2, wherein the frame (3), in particular the longitudinal guide lines (10) are configured such that the support interface (7) and the drill (5) can be tilted relative to the frame (3) by a non-zero predetermined angle (A), the predetermined angle being in particular between -90° and +90°.

4. Drilling tool (1) according to claim 3, wherein the frame (3) comprises a plurality of vertical uprights (16), in particular at least four uprights (16), arranged two by two opposite each other, in pairs, external to the longitudinal guide lines (10), and wherein the drilling tool (1) comprises an axis (15) connecting the guide lines (10) together, perpendicular to them, the axis (15) being rotatably fixed to two uprights (16) of a pair such that the rotation of the axis (15) causes the guide lines (10) to tilt, causing the support interface (7) and the drill (5) to tilt relative to the frame (3).

5. Drilling tool (1) according to claim 4, wherein the uprights (16) are configured to permit height adjustment of the axis relative to the uprights (16) of said pair.

6. Drilling tool (1) according to any one of claims 4 and 5, wherein the uprights (16) of another pair, which do not carry the axis (15), each have a plurality of openings (42) capable of receiving a removable pin system (43) to support a longitudinal guide line (10) tilted with said predetermined angle (A).

7. Drilling tool (1) according to any one of the preceding claims, comprising a second drill (25) having a removable concrete drill bit (26) for making a second drilling, in which the support interface (7) carries the second drill (25) and secures the second drill (25) to the frame (3), the second drill (25) being arranged next to the drill (5) and being secured in movement to the support interface (7).

8. Drilling tool (1) according to any one of the preceding claims, comprising a control lever (30) configured to control the translational movement of the support interface (7) relative to the chassis (3).

9. A method for drilling a wall (P), in particular a vertical wall, employing the drilling tool (1) according to any one of the preceding claims, comprising: a. Positioning the carriage (2) in front of the wall (P), b. Adjusting the positioning of the drill (5) relative to the frame (3), by adjusting the positioning of the support interface (7) relative to the frame (3), so as to be able to make a hole at a predetermined location, orientation and depth, c. Drilling the hole using the drill (5).

10. Method according to claim 9, the drilling tool (1) comprising a second drill (25), the method comprising: drilling a second hole using the second drill (25), in particular simultaneously with the hole drilled using the drill (5).

11. Method according to claim 10, the drilling tool (1) comprising a second drill bit (25), the method comprising placing a guide (27) in place of the concrete drill bit (26) in the second drill bit (25), and position said guide (27) in a hole already drilled during drilling of the hole using the drill (5).

12. A method according to any one of claims 9 to 11, the drilling tool being according to claim 8, wherein the adjustment of the positioning of the drill (5) relative to the frame (3) is implemented using the control lever (30).

13. Method according to any one of claims 9 to 12, the drilling tool (1) comprising a wheel locking mechanism (4), comprising setting an orientation of the wheels (4) substantially perpendicular to the drilling plane and locking the wheels (4) according to said orientation using the wheel locking mechanism (4).

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