Drill stand for receiving, arranging and / or guiding a drill

Abstract

The invention relates to a drill stand (1) for receiving, arranging and / or guiding a drill (2), comprising a first support (3.1), a second support (3.2), a linear guide (4) and an actuator (5), wherein the drill (2) is operatively connectable or connected to the first support (3.1), wherein the first support (3.1) is arranged to be movable, in particular height adjustable, relative to the second support (3.2) with the assistance of the linear guide (4) and with the assistance of the actuator (5), in particular for producing drilled holes using the drill (2). Wear to the components of the drill stand (1) is reduced and / or the creation of drill holes with the assistance of a drill (2) guided by the drill stand (1) is simplified, and the cost of the drill stand (1) is reduced, in that the actuator (5) is embodied and / or designed as a pneumatic bellows cylinder (6).

Description

[0001] Drill stand for holding, arranging and / or guiding a drilling machine

[0002] The invention relates to a drill stand for receiving, arranging and / or guiding a drilling machine with the features of the preamble of patent claim 1.

[0003] Such a drill stand initially has a first support, a second support, a linear guide, and an actuator. The drilling machine is operatively connectable or connected to the first support or is arranged or can be arranged on the first support. The first support is movable, in particular height-adjustable, relative to the second support with the aid of the linear guide and the actuator, in particular for creating drill holes using the drilling machine. The first support is therefore arranged so as to be movable or adjustable relative to the second support. Such drilling machines can in particular also be guided by hand and are therefore also referred to as hand drills. So-called hammer drills also belong to the category of drilling machines. With the help of the drill stand, drill holes can be created, in particular in ceilings. However, the creation of drill holes in walls with the help of the drill stand is also conceivable.

[0004] For example, WO 97 / 00404 A1, from which the invention is based, discloses a universal tool stand system for surface tools, preferably for grinding tools but also for drilling machines. The tool stand system has a first support for holding the surface tool. The first support is height-adjustable with the aid of a telescopic rod, i.e. with the aid of an actuator and a linear guide. The actuator is designed as a pneumatic piston cylinder which is connected to a 3 HP compressor. The retraction and extension of the telescopic rod can be controlled and / or regulated with the aid of a valve for controlling the air pressure in the pneumatic actuator. The valve can be actuated, for example, using a lever or a rotary handle. On the other hand, automatic control of the valve and thus automatic retraction and extension of the telescopic rod is also conceivable. The valve is designed, for example, as a 5-way slide valve.The tool stand system has a second support and a third support. The telescopic rod and the first support are arranged on the second support for height adjustment of the first support relative to the second support. The drill stand can be supported against a room floor with the help of the third support. A manual height adjustment is arranged and / or formed between the second and third supports. The pneumatic piston cylinders shown here require a relatively high working pressure of usually approximately 6 to 12 bar. During operation of the piston cylinders, a breakaway torque must first be overcome before the telescopic rod can be extended. The breakaway torque is relatively high due to the friction between the seals of the piston cylinders and the areas of the piston cylinders that are stationary relative to the seals, particularly since the seals must ensure sealing against the high working pressures.The seals are also subject to significant wear during the drilling process, as high vibrations and rapid movements occur during drilling, resulting in corresponding heat generation. Furthermore, such pneumatic piston cylinders pose the risk of so-called "stick-slip effects" when extending the telescopic rod, which makes drilling particularly difficult. The piston cylinders are typically operated with "lubricated compressed air," which is also very difficult to provide, resulting in very high operating costs.

[0005] EP 3 488 974 A1 discloses a self-aligning tool guide. The tool guide has a first support, referred to here as a holder, with fastening means for securing a handheld power tool, for example, a hammer drill. The tool guide further comprises a motorized lifting mechanism and a motorized chassis. The exemplary lifting mechanism is based on a linear guide with two parallel profile rails, which are fastened to the chassis. A slider of the first support engages with the two profile rails. The slider is displaceable on the profile rails along the linear guide. An electric motor and a spindle form an actuator for the slider. Alternatively, a hydraulic or pneumatic press, i.e., a pneumatic actuator, can also raise the lifting mechanism. The exemplary lifting mechanism can include, in addition to the power-driven lifting mechanism, a manually telescopic support.The lifting mechanism is preferably equipped with a sensor for determining the contact force on a ceiling. The actuator is regulated to maintain a constant contact force. The actuator described here, with the electric motor and spindle, is complex to construct. Furthermore, such an actuator, especially the spindle, is susceptible to contamination, especially to the drilling dust generated during drilling.

[0006] Another drill stand with a drill / hammer drill is known from US 2004 / 0240952 A1. The drill / hammer drill is height-adjustable using an actuator and a linear guide. The actuator is designed as a foot pedal. However, the actuator could also be designed as a pneumatic actuator. The foot pedal described here is disadvantageous because the necessary force must be continuously applied by the operator of the drill stand / drill during drilling. Irregular force patterns, which are detrimental to drilling, can occur due to operator fatigue, particularly during longer working periods.

[0007] Finally, DE 33 28 582 A1 discloses a mobile ceiling drilling and assembly device. A removable drilling and assembly head for mounting a drill is flanged to the end of a telescopic column of the ceiling drilling and assembly device. The height of the telescopic column is adjusted using an electric actuator / electric spirit level with an electric motor and a spindle. The ceiling drilling and assembly device has a ceiling and assembly support, whereby the ceiling drilling and assembly device can be clamped and / or locked between a room ceiling and a room floor using the ceiling and assembly support. The electrical connection of the drill is established via a socket on the ceiling drilling and assembly device. Here, too, a structurally complex actuator with an electric motor and spindle is shown.Furthermore, such an actuator, especially the spindle, is susceptible to contamination, especially to the drilling dust that occurs during drilling.

[0008] The invention is therefore based on the object of designing and / or developing the drill stand in such a way that the problems of the prior art are avoided or at least reduced, in particular wear of the components of the drill stand is reduced, and the creation of boreholes with the aid of a drilling machine guided by means of the drill stand is simplified and the associated costs are also reduced.

[0009] This problem underlying the invention is now initially solved by a drill stand having the features of patent claim 1.

[0010] An essential aspect of the invention is that the actuator is designed and / or constructed as a pneumatic bellows cylinder.

[0011] Such a bellows cylinder operates with low wear, particularly since there is no friction between mechanical components. This also minimizes the risk of the aforementioned "stick-slip effects." The bellows cylinder can be operated at low working pressures of 0 to 8 bar. Furthermore, the design of the bellows cylinder protects it against contamination. The bellows cylinder can be operated with ambient air and does not require "lubricated compressed air." Bellows cylinders are also maintenance-free. The use of the bellows cylinder therefore leads to a simple and cost-effective drill stand design. Bellows cylinders also act advantageously as shock absorbers, which often occur during drilling, especially with a hammer drill. This not only allows for better quality drill holes to be created, but also reduces wear and tear on the drilling tools, thus protecting them from damage.

[0012] The pneumatic bellows cylinder preferably has at least one bellows, in particular is designed as a "single bellows". A first end cover is arranged on a first end face of the bellows. A second end cover is arranged on the second end face of the bellows opposite the first end face. By means of the bellows and the two end covers, an interior of the bellows cylinder can be delimited in an airtight manner. It is also conceivable for the bellows cylinder to have two or three or more bellows arranged in series, with two adjacent bellows then each being sealingly connected to one another by means of a support ring. In particular, the bellows cylinder is then designed as a so-called "double bellows" or "triple bellows". Two or more bellows can also be arranged parallel to one another. In a series arrangement, the bellows lie one above the other in their direction of extension. In a parallel arrangement, the bellows lie adjacent to one another in their direction of extension.The bellows preferably comprise rubber and / or are made of rubber. The two end covers preferably comprise metal, in particular steel, and / or are made of metal, in particular steel. The end covers and the bellows enable a uniform transmission of force from the bellows actuator to adjacent components. Furthermore, the bellows actuator is easy to install thanks to the end covers.

[0013] Advantageously, a compressed air connection is arranged on the first and / or the second end cover. Air can be supplied to the interior or discharged from the interior via the compressed air connection. When air is supplied to the interior, the distance between the two end covers can be increased, in particular by reducing the outer diameter of the bellows. When air is discharged from the interior, the distance between the two end covers can be reduced, in particular by increasing the outer diameter of the bellows. Arranging the compressed air connection on the first and / or the second end cover enables simple sealing of the compressed air connection. Theoretically, it would also be conceivable to arrange the compressed air connection in the area of ​​the bellows.

[0014] According to a further embodiment of the drill stand, the first end cover is effectively connected to the first support, and the second end cover is effectively connected to the second support, or arranged accordingly. This is particularly easily achieved with a flange connection. During operation of the bellows cylinder, the force transmission between the end covers and the supports can be achieved evenly across the entire surfaces of the end faces of the end covers.

[0015] According to a further preferred embodiment of the drill stand, an axis of the bellows cylinder and a direction of movement of the linear guide are aligned substantially parallel to each other. This minimizes, or at least reduces, the risk of tilting of the bellows cylinder and thus also of the drilling machine guided by the drill stand. The linear guide allows forces perpendicular to the direction of movement of the linear guide and perpendicular to the axis of the bellows cylinder to be absorbed by the linear guide, so that such forces do not need to be absorbed by the bellows cylinder. This results in a particularly simple design of the bellows cylinder without complex bearings.

[0016] According to a particularly preferred embodiment of the drill stand, an air pump is fluidly connected to the bellows cylinder, in particular to the compressed air connection. This fluid connection is preferably established using hoses, pipes, and / or flow channels formed in the housing / support components. Due to their flexibility, hoses are particularly preferred, since the distance between the air pump and the bellows cylinder is usually variable during operation of the drill stand.

[0017] Preferably, the air pump is designed as a "manual" air pump, in particular as a hand or foot air pump. In this case, no electrical power is required to operate the air pump. It is possible for an operator to generate the air pressure required for drilling in the bellows cylinder using the "manual" air pump and then attend to other manual tasks during the drilling process, since the pressure is generated by the bellows cylinder during the drilling process itself, without any further action being required on the part of the operator. The term "manual" air pump therefore refers in particular to an air pump that can be operated by hand and / or foot.

[0018] In another alternative embodiment of the drill stand, the air pump is designed as an automatically controllable air pump. Such automatically controllable air pumps are also referred to as compressors. Such an automatically controllable air pump is operated, in particular, by an electric motor. Advantageously, the operator then does not have to apply any force to generate the air pressure in the bellows cylinder; instead, the automatically controllable air pump only needs to be controlled, e.g., by entering a start command and / or entering a target air pressure for the bellows cylinder.

[0019] Further preferably, a valve is fluidly connected to the bellows cylinder, in particular to the compressed air connection. In particular, air can be released from the bellows cylinder by means of the valve. This is advantageous in order to be able to guide a drill guided by the drilling machine out of the borehole again after a borehole has been created. If the first support is moved relative to the second support, in particular is adjusted in height, i.e. in particular if a borehole is created in a room ceiling, the drill is guided out of the borehole by the weight of the first support and the drilling machine, which acts on the bellows cylinder in the direction of gravity. If the weight of the first support and the drilling machine is then greater than the force generated by the air pressure in the bellows cylinder and acting against this weight, the drilling machine sinks and the drill is thereby guided out of the borehole.The latter is achieved in particular by releasing air from the interior of the bellows cylinder via the previously mentioned valve.

[0020] The valve is advantageously operated with a control lever. The control lever is, in particular, manually operated. A manually operated control lever is used particularly in combination with the manual air pump.

[0021] Preferably, the air pump and the control lever are fluidly connected to the bellows cylinder, in particular to the compressed air connection, via a common pneumatic control element. Such a pneumatic control element could, for example, also include the aforementioned valve. It would also be conceivable for the pneumatic control element to include a pressure limiter, so that, in particular, a maximum permissible air pressure in the bellows cylinder is not exceeded.

[0022] At least one fastening means is preferably operatively connected to the first support and / or arranged thereon. Using the fastening means, at least one drill of a specific type can be detachably connected to the first support. In particular, drills of different types can be detachably connected to the first support using the fastening means. The drill stand is then designed to accommodate commercially available drills, in particular hand drills, which are usually already available, for example, in craft businesses. Furthermore, such hand drills can be used not only with the drill stand but also in hard-to-reach areas where the drill stand cannot be used. Nevertheless, only one drill is then required, which can be used with or without the drill stand, depending on the application.

[0023] The drill stand further preferably has a third support with a support area for supporting the drill stand against a room floor and / or a room wall. An adjustment mechanism, in particular a manual one, is realized or arranged between the second and the third support. With the help of this adjustment mechanism, in particular a distance between the support area and the linear guide or the second support can be adjusted. To create a borehole, the distance between the support area and the linear guide or the second support is first adjusted until the drill is at a certain distance from the "target wall", in particular from the room ceiling or the room wall, in which the borehole is to be created. This certain distance is then dimensioned such that this certain distance and the desired borehole depth can be overcome with the help of the bellows cylinder.Thanks to the adjustment mechanism effectively arranged between the second and third supports, a bellows cylinder with a shorter stroke length can also be used, which can then be fully extended and retracted more quickly than a corresponding bellows cylinder with a longer stroke length. The necessary air pressure in the bellows cylinder can then be generated quickly and with little energy expenditure. Furthermore, the bellows cylinder is then particularly simple in design, in particular with a minimal number of bellows. This adjustment mechanism, especially a manual one, could also incorporate a corresponding gear to reduce the force required by the operator, or a corresponding actuator could be used instead of the manual adjustment mechanism.

[0024] Advantageously, the support area comprises at least one rubber element, in particular a rubber foot. This ensures secure support, in particular a secure footing, of the drill stand even on an uneven support surface, especially on uneven ground. The rubber element also dampens impacts on the drill stand. In particular, several rubber feet are provided.

[0025] The drill stand preferably has a mounting support. Using the mounting support, the drill stand, and in particular the second support, can be clamped and / or locked between two opposing "walls" of a room, in particular the floor and ceiling. This avoids or at least reduces the risk of the drill bit jamming in a hole just drilled. The drill can thus be guided particularly safely with the drill stand.

[0026] According to an advantageous embodiment of the drill stand, the drill stand has a power connection, in particular a power strip, for supplying power, in particular to the drill. Commercially available drills have a power connection, preferably designed as a plug, in particular a Schuko plug, which can be connected to the power connection of the drill stand, in particular the power strip. Such a power connection of the drill stand, in particular the power strip, can then be connected and / or connected to a household power network and / or a battery.

[0027] In a further preferred embodiment, the drill stand has a control unit for controlling and / or regulating the air pump and / or valve, which can be controlled automatically. This allows a specific air pressure to be generated automatically in the bellows cylinder. In particular, a specific air pressure or one that varies over time can be generated in the bellows cylinder.

[0028] In a further preferred embodiment of the drill stand, a pressure sensor for measuring the air pressure in the bellows cylinder, in particular in its interior, is provided and / or present. In particular, the pressure sensor is then connected to the control unit for data purposes. With the help of such a pressure sensor, in particular, regulation of the air pressure in the bellows cylinder is then possible. The pressure sensor can be arranged with its measuring range in the interior of the bellows cylinder itself or in a flow channel adjacent to this interior, where, due to only slight pressure losses towards the interior, essentially the same high pressure is then present. The measuring range of the pressure sensor could, for example, also be arranged adjacent to an outlet of the air pump and / or an outlet of the valve.

[0029] According to a further advantageous embodiment of the drill stand, a motion sensor is provided and / or present for measuring the movement of the first support, in particular thus the movement of the drilling machine. In particular, the motion sensor is connected to the control unit for data purposes. The motion sensor could, for example, be arranged in the region of the linear guide, so that the movement of the first support relative to the second support can be detected by means of the motion sensor. The motion sensor could also be designed as a distance sensor, e.g. using a laser, so that a distance of the distance sensor, e.g. mounted on the first support, relative to the wall, in particular relative to a ceiling, into which the borehole is to be drilled, can be detected.

[0030] According to a particularly preferred embodiment of the drill stand, a specific borehole depth can be automatically generated with the aid of the control unit, in particular with the aid of a control and / or regulation of the air pressure in the bellows cylinder and / or a control and / or regulation of the movement of the first carrier. This specific borehole depth could then be entered, for example, on an input device coupled to the control unit. With the aid of the control unit, in particular, corresponding control software can be executed, by means of which corresponding control commands for the air pump and / or for the valve can first be determined and then transmitted to the air pump and / or the valve via corresponding connection interfaces of the control unit. The control software then also uses, in particular, the data determined by means of the pressure sensor and / or the motion sensor to determine the control commands.

[0031] There are now numerous possibilities for advantageously designing and developing the drill stand according to the invention. Reference is made to the claims subordinate to claim 1. A preferred embodiment of the drill stand according to the invention will now be explained and described in more detail with reference to the drawing and the accompanying description. The drawing shows:

[0032] Fig. 1 shows a schematic representation of an embodiment of a drill stand in a first side view,

[0033] Fig.2 shows a schematic representation of the embodiment of the drill stand from Fig.1 in a second side view rotated by 90° to the first side view,

[0034] Fig.3 shows a schematic representation of the embodiment of the drill stand from Fig.1 in a plan view.

[0035] Fig. 1 to Fig. 3 each show the same embodiment of a drill stand 1 for receiving, arranging, and / or guiding a drilling machine 2, with a first support 3.1, with a second support 3.2, with a linear guide 4, and with an actuator 5 in different views. The drilling machine 2 can be effectively connected to the first support 3.1 or can be mounted on the first support

[0036] 3.1 can be arranged or connected, wherein in Fig.1 to Fig.3 the connected state of the drilling machine 2 with the first carrier 3.1 is shown or the drilling machine 2 is arranged or detachably fastened to the first carrier 3.1.

[0037] The first support 3.1 is movable, in particular height-adjustable, relative to the second support 3.2 with the aid of the linear guide 4 and the actuator 5, in particular for creating drill holes using the drill 2. In particular, the first support 3.1 is therefore arranged to be movable. The linear guide 4 has a length of 350 mm to 700 mm, in particular 600 mm. With the vertical alignment of the linear guide 4, the actuator 5 and the drill 2 shown here, drill holes can be drilled, in particular, in a room ceiling. In contrast, an oblique or horizontal alignment of the linear guide 4, the actuator 5 and the drill 2 would also be conceivable, e.g., in order to be able to drill holes in a room wall.

[0038] The actuator 5 is now designed and / or constructed as a pneumatic bellows cylinder 6. The bellows cylinder 6 has a stroke length of 350 mm to 450 mm, in particular 400 mm.

[0039] The pneumatic bellows cylinder 6 has at least one bellows 7. A first cover

[0040] 8.1 is arranged on a first end face of the bellows 7. A second end cover 8.2 is arranged on the second end face of the bellows 7, opposite the first end face. By means of the bellows 7 and the two end covers 8.1, 8.2, an interior space 9 of the bellows cylinder 6 can be hermetically delimited or enclosed. In particular, Fig. 1 and Fig. 2 show a single bellows 7 with a wave-shaped outer contour. In contrast, it would also be conceivable for the bellows to have only a single outwardly curved region. It is also conceivable for the bellows cylinder to have at least three bellows, preferably arranged in series, each with an intermediate ring arranged between two adjacent bellows, wherein the two end covers are then each arranged on an outer end face of the opposing outer bellows of the row of bellows. The two end covers 8.1, 8.2 are each designed as a substantially round plate.

[0041] A compressed air connection, not shown in detail here, is arranged on the first and / or the second end cover 8.1, 8.2. Air can be supplied to the interior 9 or discharged from the interior 9 via the compressed air connection. When air is supplied to the interior 9, the distance between the two end covers 8.1, 8.2 can be increased, in particular by reducing the outer diameter of the bellows 7. When air is discharged from the interior 9, the distance between the two end covers 8.1, 8.2 can be reduced, in particular by increasing the outer diameter of the bellows 7.

[0042] The first end cover 8.1 is effectively connected or arranged accordingly with the first support 3.1 and the second end cover 8.2 is effectively connected or arranged accordingly with the second support 3.2.

[0043] If air is therefore supplied to the interior 9 and if a certain air pressure is exceeded, the first support 3.1 is moved relative to the second support 3.2, the pressure being transferred to the two supports 3.1, 3.2 via the two end covers 8.1, 8.2. With the vertical alignment of the drilling machine 2 shown here, the specific air pressure must be used to overcome the weight of the components to be moved, in particular the parts of the linear guide 4, the first support 3.1 and the drilling machine 2, acting on the bellows cylinder 6, before the first support 3.1 moves relative to the second support 3.2. The first support 3.1 is arranged so as to be movable relative to the second support 3.2 with the aid of the linear guide 4.

[0044] An axis of the bellows cylinder 6 and a direction of movement of the linear guide 4 are aligned substantially parallel to one another. In particular, the linear guide 4 has two guide rails arranged substantially parallel to one another, so that tilting of the linear guide 4 and / or the bellows cylinder 6 is made more difficult. Such guide rails are preferably each at a substantially equal distance from the bellows cylinder 6. In particular, the first carrier 3.1 is then movably arranged on the guide rails of the linear guide 4.

[0045] An air pump 10 is fluidically connected to the bellows cylinder 6, in particular to the compressed air connection. A preferably spiral-shaped hose serves this purpose, at least in part. Alternatively or additionally, the use of pipes and / or flow channels formed in the housing / support components is also conceivable.

[0046] The air pump 10 is designed, for example, as a manual air pump 10.1, in particular as a hand and / or foot air pump. Double air pumps, i.e. air pumps 10 with two cylinders, are particularly suitable. A foot air pump has the advantage that the operator has his hands free for other activities while pumping. The air pump 10, 10.1 is arranged, in particular, on a room floor while pumping. When using the movable hose, the position of the air pump 10, 10.1 can be freely selected within the scope of the length of the hose. The air pump 10 could also be designed as an automatically controllable air pump 10.2. Such an automatically controllable air pump 10.2 could also be permanently connected to one of the supports 3.1, 3.2 or 3.3. Fig. 1 to Fig. 3 each show both a manual air pump 10.1 and an automatically controllable air pump 10.2, which can be operated simultaneously or separately. It would also be conceivable to use only one of the two air pumps 10.1 or 10.2.

[0047] A valve 11 is fluidly connected to the bellows cylinder 6, in particular to the compressed air connection. In particular, air can be released from the bellows cylinder 6 by means of the valve 11. The valve 11 is arranged at a distance from the bellows cylinder 6 and is fluidly connected to the bellows cylinder 6 via corresponding flow channels (not further described here). The valve 11 could also be arranged on the bellows cylinder 6 itself.

[0048] The valve 11 is actuated with a control lever 12. The valve 11 is thus manually actuated. In a rest position of the control lever 12, the valve 11 is preferably closed. By actuating the control lever 12 and a corresponding movement of the control lever 12, the valve 11 can then be opened, and the air from the bellows cylinder 6 can be released into the environment. After actuation, the control lever 12 can be automatically returned to its rest position, preferably by spring force.

[0049] The air pump 10 and the control lever 12 are fluidly connected to the bellows cylinder 6, in particular to the compressed air connection, via a common pneumatic control element 13. The valve 11 is arranged in particular on the pneumatic control element 13 and / or at least partially formed with the aid of the pneumatic control element 13. The control lever 12 is mechanically connected to the pneumatic control element 13. The pneumatic control element 13 has a connection for the air pump 10, a connection for the bellows cylinder 6, and in particular an outlet for discharging the air from the bellows cylinder 6.

[0050] At least one fastening means 14 is connected to the first support 3.1 or arranged thereon. With the fastening means 14, at least one drilling machine 2 of a specific type can be detachably connected to the first support 3.1 or detachably fastened thereon. In particular, drilling machines 2 of different types can also be detachably connected to the first support 3.1 with the fastening means 14. In particular, a first fastening means 14.1, designed as a machine bed, is provided, by means of which the drilling machine 2 can be supported against the drilling direction and thus in the direction of the axis of the bellows cylinder 6. In particular, a second fastening means 14.2, designed as a machine holder, is provided, by means of which the drilling machine 2 can be supported perpendicular to the drilling direction and thus perpendicular to the axis of the bellows cylinder 6. Such a second fastening means 14.2, when connected to the drill 2, is arranged, in particular, adjacent to a chuck of the drill 2. Other designs of the fastening means are also conceivable.

[0051] The drill stand 1 has a third support 3.3 with a support area 15 for supporting the drill stand 1 against a room floor and / or a room wall. An adjustment mechanism 16 is provided between the second and third supports 3.2, 3.3. This adjustment mechanism 16 allows the distance between the support area 15 and the linear guide 4 or the second support 3.2 to be adjusted.

[0052] The adjustment mechanism 16 has at least one fastening means by means of which the second support 3.2 can be releasably fastened to the third support 3.3 in various positions relative to the third support 3.3. For example, the adjustment mechanism 16 could have at least one bolt that can be arranged penetrating the second and third supports 3.2, 3.3. The third support 3.3 then has a plurality of bores at different distances from the support area 15, in each of which the bolt can be arranged. Alternatively, an adjustment mechanism such as that known from a forklift mast could also be used. A hydraulic cylinder and, in particular, a chain guided over a deflection pulley could thus be used to realize the relative movement between the second and third supports 3.2, 3.3. Other mechanical possibilities are also conceivable.

[0053] The first support 3.1, the second support 3.2 and / or the third support 3.3 preferably comprise aluminum and / or are made of aluminum. In particular, the first support 3.1, the second support 3.2 and / or the third support 3.3 each have at least one profile body with undercut grooves, wherein with the aid of the undercut grooves further components, e.g. further profile bodies, can be connected or are connected to the respective profile body. The first support 3.1, the second support 3.2 and / or the third support 3.3 are each substantially L-shaped (cf. first side view of Fig.1).

[0054] One of two legs 3.1.1, 3.2.1, 3.3.1 of such L-shaped supports 3.1, 3.2 and / or 3.3 is preferably aligned perpendicular to the axis of the bellows cylinder 6, in particular horizontally. The other of the two legs 3.1.2, 3.2.2, 3.3.2 of such L-shaped supports 3.1,

[0055] 3.2 and / or 3.3 is preferably aligned parallel to the axis of the bellows cylinder 6, in particular vertically. The support region 15 is then formed in particular by the leg 3.3.1 of the third support 3.3, which is aligned perpendicularly to the axis of the bellows cylinder 6, in particular horizontally. The linear guide 4 is then arranged between the legs 3.1.2, 3.2.2 of the first and second support 3.1, 3.2, which are aligned parallel to the axis of the bellows cylinder 6, in particular vertically. The aforementioned legs 3.1.1, 3.2.1, 3.3.1, 3.1.2, 3.2.2,

[0056] 3.3.2 are in particular formed by means of several profile bodies each forming a frame.

[0057] The support area 15 has at least one rubber element 17, in particular a rubber foot. In particular, the support area 15 is formed with the aid of the rubber element 17. In particular, four rubber feet are arranged on each of four corner areas of the third support 3.3 on the underside of the third support 3.3. The four corner areas are preferably formed or arranged on the leg 3.3.1 of the third support 3.3, which is oriented perpendicular to the axis of the bellows cylinder 6, in particular horizontally. In the area of ​​the underside of the third support 3.3, at least one roller is also arranged, with the aid of which the drill stand 1 can be moved on a room floor, in particular in a horizontal direction. The roller could, for example, be designed as a spring roller, wherein the roller is then pretensioned towards the room floor by means of a spring.

[0058] The drill stand 1 has a mounting support 18. The drill stand 1, in particular the second support 3.2, can be clamped and / or locked between two opposing walls of a room, in particular the room floor and the room ceiling, using the mounting support 18. The mounting support 18 is designed in particular as a telescopic rod and thus adjustable in length, in particular so that clamping and / or locking is possible regardless of the exact position of the second support 3.2.

[0059] The drill stand 1 has a power connection, not shown here, in particular a power strip, for supplying power, in particular to the drilling machine 2.

[0060] The following describes the process for creating a borehole, as is possible in particular with the manual air pump 10.1. First, the drill stand 1 is positioned in the desired position on the room floor, in which position the drill stand 1 is then supported against the room floor by the rubber element 17. If the drilling machine 2 is not yet connected to the first support 3.1 by means of the fastening means 14, this connection is still created. The second support 3.2 is now moved relative to the third support 3.3 until a drill bit of the drilling machine 2 is only a small distance from the wall or ceiling in which the borehole is to be drilled. In this position, the second support 3.2 is locked relative to the third support 3.3. Optionally, the drill stand 1, in particular the second support 3.2, is clamped or locked between two opposite walls of the room using the mounting support 18.This clamping can be achieved by moving the second support 3.2 with the mounting support 18 and / or by extending the mounting support 18 itself. Air is then supplied to the bellows cylinder 6 with the aid of the air pump 10, so that the first support 3.1 with the drilling machine 2 is moved towards the wall or ceiling in which the borehole is to be created. The air supply is preferably stopped after the drill has reached the wall and when a certain pressure desired to start drilling or a force generated by the pressure acts between the drill and the wall or, in particular, the ceiling. When using the manual air pump 10.1, an operator then stops pumping. When using the automatically controllable air pump 10.2, a stop command is then sent to the automatically controllable air pump 10.2, e.g., by a corresponding input from the operator.It is also conceivable, however, that air is supplied to the bellows cylinder 6 during drilling with the aid of the respective air pump 10. The movement of the first support 3.1 with the drilling machine 2 is continued after reaching the wall until the desired borehole depth is achieved. While the first support 3.1 is moving, the drill of the drilling machine 1 is rotated or driven, at least after reaching the wall. During the creation of the borehole, an essentially constant pressure is initially transferred to the tip of the drill by means of the bellows cylinder 6 until the pressure is "used up" by the advancement of the first support 3.1, whereby the pressure then drops towards the end of the advancement unless air is supplied to the bellows cylinder 6 again. In reinforced concrete walls, for example, the drill inevitably strikes the reinforcing steel contained therein.Here, the essentially constant pressure required for drilling is maintained with the help of the bellows cylinder 6, even without the need for further air supply to the bellows cylinder 6. When drilling through the reinforcing steel, the pressure in the bellows cylinder 6 and thus the pressure acting between the reinforcing steel and the drill, or the corresponding force then acting, is essentially constant because the drilling machine 1 moves only slightly along the axis of the bellows cylinder 6 while drilling through the reinforcing steel, namely by the value of the thickness of the reinforcing steel. Preferably, the bellows cylinder 6 continues to be operated while drilling through the reinforcing steel in an operating range in which the pressure in the bellows cylinder 6 drops only slightly, if at all, with the movement of the drilling machine 1, even without further air supply to the bellows cylinder 6. The pressure in the bellows cylinder 6 then only drops more sharply once the reinforcing steel has already been drilled through.During the drilling process, particularly after the air supply to the bellows cylinder 6 has been completed by means of the air pump 10, in particular the manual air pump 10.1, the operator can devote himself to other tasks, since the drilling process then proceeds essentially automatically. It is conceivable that the drilling process can be aborted by the operator by actuating the control lever 12.

[0061] The drill stand 1 has a control unit 19 for controlling and / or regulating the automatically controllable air pump 10.2 and / or the valve 11. The control unit 19 is arranged in the area of ​​the pneumatic control element 13. Using the control unit 19, control commands for the automatically controllable air pump 10.2 and / or an actuator of the valve 11 can be generated. The control unit could also be omitted if only a manual air pump 10.1 and no automatically controllable air pump 10.2 is used.

[0062] A pressure sensor (not shown here) is provided and / or present for measuring the air pressure in the bellows cylinder 6, in particular in its interior 9. In particular, the pressure sensor is connected for data purposes to the control unit 19. Thus, during operation of the drill stand, the data measured by the pressure sensor is available in the control unit 19. With the automatically controllable air pump 10.2, in particular, a pressure desired for drilling, preferably constant during drilling, can be achieved in the bellows cylinder 6. By means of the automatically controllable air pump 10.2, air can also be supplied to the bellows cylinder 6 during drilling and / or without operator intervention. For example, a specific pressure control of the air pressure in the bellows cylinder 6 could be realized by means of the pressure sensor, the automatically controllable air pump 10.2 and the control unit 19.

[0063] A motion sensor (not shown here) is provided and / or present for measuring the movement of the first support 3.1, in particular of the drilling machine 2. In particular, the motion sensor is connected to the control unit 19 for data purposes. Thus, during operation of the drill stand, the data measured by the motion sensor is available in the control unit 19.

[0064] With the help of the control unit 19, a specific borehole depth can be created automatically, in particular with the help of a control and / or regulation of the air pressure in the bellows cylinder 6 and / or a control and / or regulation of the movement of the first support 3.1. For this purpose, the automatically controllable air pump 10.2 is used in particular. However, the use of the manual air pump 10.1 would also be conceivable. The process for automatically creating a borehole with the specific borehole depth is described below. The following only describes the differences to the general creation of a borehole described above. While the first support 3.1 is moving, this movement of the first support 3.1 and / or the air pressure in the bellows cylinder 6 is monitored with the help of the control unit 19. It is thus detectable when the drill bit of the drilling machine 1 has reached the wall or ceiling, e.g. through a corresponding gradient in the pressure curve of the air pressure.The information that the drill bit of the drilling machine 1 has reached the wall or ceiling is then available in the control unit 19. The movement of the first support 3.1 with the drilling machine 2 continues after the wall has been reached until the desired borehole depth is reached. The desired borehole depth is available in particular through a prior input by an operator in the control unit 19. Reaching the desired borehole depth can be detected, for example, by evaluating the data from the motion sensor, namely when the first support 3.1 has moved by the value of the borehole depth after reaching the wall. The control unit 19 then sends an actuating command to the valve 11, as a result of which the valve 11 is opened and air is released from the bellows cylinder 6. By releasing the air, the pressure in the bellows cylinder 6 decreases, so that no further force from the drill acts in the direction of the wall.The drilling process is then completed at the desired borehole depth.

[0065] List of reference numerals Drill stand Drilling machine First support perpendicular to the axis of the bellows cylinder 6, in particular horizontally, aligned leg of the first support 3.1 parallel to the axis of the bellows cylinder 6, in particular vertically, aligned leg of the first support 3.1 Second support perpendicular to the axis of the bellows cylinder 6, in particular horizontally, aligned leg of the second support 3.2 parallel to the axis of the bellows cylinder 6, in particular vertically, aligned leg of the second support 3.2 Third support perpendicular to the axis of the bellows cylinder 6, in particular horizontally, aligned leg of the third support 3.3 parallel to the axis of the bellows cylinder 6, in particular vertically, aligned leg of the third support 3.3 Linear guide Actuator Pneumatic bellows cylinder Bellows first end cover Second end cover Interior of the bellows cylinder 6 Air pump Manual air pump Automatically controllable air pump Valve Control lever Pneumatic control element Fastener First fastener Second fastener Support area Manual adjustment mechanism Rubber element Mounting support Control unit.

Claims

Patent claims 1. Drill stand (1) for receiving, arranging and / or guiding a drilling machine (2), with a first support (3.1), with a second support (3.2), with a linear guide (4) and with an actuator (5), wherein the drilling machine (2) can be or is effectively connected to the first support (3.1), wherein the first support (3.1) is arranged so as to be movable, in particular height-adjustable, relative to the second support (3.2) with the aid of the linear guide (4) and with the aid of the actuator (5), in particular for producing drill holes by means of the drilling machine (2), characterized in that the actuator (5) is designed and / or constructed as a pneumatic bellows cylinder (6).

2. Drill stand (1) according to claim 1, characterized in that the pneumatic bellows cylinder (6) has at least one bellows (7), wherein a first end cover (8.1) is arranged on a first end face of the bellows (7), wherein a second end cover (8.2) is arranged on the second end face of the bellows (7) opposite the first end face, wherein by means of the bellows (7) and the two end covers (8.1, 8.2) an interior space (9) of the bellows cylinder (6) can be delimited in an airtight manner.

3. Drill stand (1) according to claim 2, characterized in that a compressed air connection is arranged on the first and / or on the second end cover (8.1, 8.2), wherein air can be supplied to the interior (9) or discharged from the interior (9) via the compressed air connection, wherein when air is supplied to the interior (9) the distance between the two end covers (8.1, 8.2) to one another can be increased, in particular by reducing the outer diameter of the bellows (7), wherein when air is discharged from the interior (9) the distance between the two end covers (8.1, 8.2) to one another can be reduced, in particular by increasing the outer diameter of the bellows (7).

4. Drill stand (1) according to claim 2 or 3, characterized in that the first end cover (8.1) is effectively connected to the first support (3.1) and the second end cover (8.2) is effectively connected to the second support (3.2).

5. Drill stand (1) according to one of the preceding claims, characterized in that an axis of the bellows cylinder (6) and a direction of movement of the linear guide (4) are aligned substantially parallel to one another.

6. Drill stand (1) according to one of the preceding claims, characterized in that an air pump (10) is fluidly connected to the bellows cylinder (6), in particular to the compressed air connection.

7. Drill stand (1) according to the preceding claim, characterized in that the air pump (10) is designed as a manual air pump, in particular as a hand or foot air pump (10.1).

8. Drill stand (1) according to claim 6, characterized in that the air pump (10) is designed as an automatically controllable air pump (10.2).

9. Drill stand (1) according to one of the preceding claims, characterized in that a valve (11) is fluidically connected to the bellows cylinder (6), in particular to the compressed air connection, in particular wherein air can be released from the bellows cylinder (6) by means of the valve (11).

10. Drill stand (1) according to the preceding claim, characterized in that the valve (11) can be actuated with a control lever (12). 1 1. Drill stand (1) according to the preceding claim, characterized in that the air pump (10) and the control lever (12) are fluidly connected to the bellows cylinder (6), in particular to the compressed air connection, via a common pneumatic control element (13).

12. Drill stand (1) according to one of the preceding claims, characterized in that at least one fastening means (14) is connected to the first support (3.1) and / or is arranged on the first support (3.1), wherein at least one drilling machine (2) of a specific type, but in particular also drilling machines (2) of different types, can be detachably connected to the first support (3.1) using the fastening means (14).

13. Drill stand (1) according to one of the preceding claims, characterized in that the drill stand (1) has a third support (3.3) with a support area (15) for supporting the drill stand (1), in particular with respect to a room floor and / or a room wall, wherein a manual adjustment mechanism (16) is realized between the second and the third support (3.2, 3.3), wherein with the aid of this adjustment mechanism (16) a distance between the support area (15) and the linear guide (4) can be adjusted.

14. Drill stand (1) according to the preceding claim, characterized in that the support area (15) has at least one rubber element (17), in particular a rubber foot.

15. Drill stand (1) according to one of the preceding claims, characterized in that the drill stand (1) has a mounting support (18), wherein the drill stand (1), in particular the second carrier (3.2), can be clamped and / or locked with the aid of the mounting support (18) between two opposite walls of a room, in particular the room floor and the room ceiling.

16. Drill stand (1) according to one of the preceding claims, characterized in that the drill stand (1) has a power connection, in particular a plug strip, for supplying power, in particular to the drilling machine (2).

17. Drill stand (1) according to one of claims 8 to 16, characterized in that the drill stand (1) has a control device (19) for controlling and / or regulating the automatically controllable air pump (10.2) and / or the valve (11).

18. Drill stand (1) according to one of the preceding claims, characterized in that a pressure sensor for measuring the air pressure in the bellows cylinder (6), in particular in its interior (9), is provided and / or present, in particular wherein the pressure sensor is connected to the control unit (19) for data purposes.

19. Drill stand (1) according to one of the preceding claims, characterized in that a motion sensor for measuring the movement of the first carrier (3.1), in particular of the drilling machine (2), is provided and / or present, in particular wherein the motion sensor is connected to the control unit (19) for data purposes.

20. Drill stand (1) according to one of claims 17 to 19, characterized in that with the aid of the control device (19) a certain borehole depth can be generated automatically, in particular with the aid of a control and / or regulation of the air pressure in the bellows cylinder (6) and / or a control and / or regulation of the movement of the first carrier (3.1).

Images