Multiple screw device for screwing on at least two screw elements and method for screwing on at least two screw elements

Abstract

Multiple screw device (1) for screwing on at least two screw elements (2, 3), comprising - a support device (4) on which at least two screw tools (5, 6) are arranged for screwing on the screw means (2, 3); - a base unit (7) that supports the support unit (4) against a mounting surface (8); - a vertical support device (9) which is designed to perform a relative movement (10) of the support device (4) and base device (7), in particular exclusively vertical movement; - an adjusting device (11) for applying a movement force (12), in particular muscle-powered, to the support device (4) for carrying out the relative movement (10), for bringing the at least two screw means (2, 3) towards and screwing them onto a structure (20) receiving the screw means (2, 3), characterized in that the multiple screw device (1) comprises at least one holding means (15) by means of which at least one component (30) to be screwed onto a structure (20) with the at least two screw means (2, 3) can be held.

Description

[0001] The invention relates to a multiple screw device for screwing on at least two screw means and a method for screwing on at least two screw means.

[0002] Multiple screw devices for fastening at least two fasteners are known in principle from the prior art. For example, it is known to use a screw device for tightening wheel bolts, which enables the simultaneous tightening of, for example, four or five wheel bolts to fasten a wheel to a vehicle hub flange. For this purpose, it is known, for instance, to couple the output of a screw motor with a planetary gear to distribute the rotary motion of the screw motor to the corresponding wheel bolts to be tightened, thus enabling their fastening to the hub flange. Furthermore, for such tightening, a purely horizontal feed movement of the wheel bolt and hub flange is performed.

[0003] EP 0 232 018 A2 describes a machine tool which has two nut spindle assemblies for simultaneously tightening two threaded connectors. One nut spindle is held in a fixed position on a sliding element that forms a movable support for the other nut spindle.

[0004] The invention is based on the objective of providing a multi-screw device for screwing on at least two screw elements, which is particularly suitable for use in an assembly environment, especially in vehicle construction, with regard to simple and quick handling.

[0005] The problem is solved by a multi-screw device for attaching at least two screw elements according to claim 1. The dependent claims relate to possible embodiments of the multi-screw device. Furthermore, the problem is solved by a method according to claim 12.

[0006] The invention relates to a multi-screw device for attaching at least two screw elements. The screw elements used for this purpose can be, for example, screws with a threaded shank or nuts with an internal thread. The multi-screw device further comprises a support structure on which at least two screw tools for attaching the screw elements to a structure are arranged. The support structure can, for example, include fasteners that enable the screw tools to be attached releasably or permanently.

[0007] Furthermore, the multi-screw device includes a base unit that supports the support device against a mounting surface. This base unit can, for example, comprise a support structure for bracing the support device against a mounting surface that supports the multi-screw device, such as a floor.

[0008] Furthermore, the multi-screw device comprises a vertical bearing assembly and an adjustment mechanism. The vertical bearing assembly is designed to execute a vertical relative movement between the support assembly and the base assembly. For example, the vertical bearing assembly is arranged or designed such that only a substantially vertical relative movement (e.g., + / - 35%, preferably + / - 20%, particularly preferably + / - 10%, most preferably + / - 5%) between the support assembly and the base assembly is possible. For example, the vertical bearing assembly is designed as a linear bearing, such as a linear sliding bearing or a linear ball bearing. The adjustment mechanism serves to apply a force, particularly one powered by muscle, to the support assembly to execute the relative movement between the support assembly and the base assembly.This relative movement of the support device and the base device is used to bring the at least two screws into position and attach them to a structure that will receive the screws. The relative movement of the support device to the base device is also used to bring the support device closer to the structure to which the at least two screws are to be attached.

[0009] For example, the structure can have a screw receptacle that corresponds to the respective screw element to be screwed in. The screw receptacle can be designed, for example, as a core hole, a recess with an internal thread, and / or a dome or shaft with an external thread. Because the movement of the support device allows the at least two screw tools to be brought to the structure together, the screw elements assigned to the at least two screw tools can be screwed onto the structure simultaneously, sequentially, or overlapping. The screw tools set the assigned screw elements into rotational motion, whereby the initial thrust of the rotating screw elements is achieved by means of the relative movement of the support device and the base device.

[0010] It is possible that the adjustment device is designed as a handle and serves to apply a muscle-assisted force to the support structure. For example, the handle can be arranged or designed as a grip or force application zone on the support structure. The handle can be a separate element attached to a base structure of the support structure or form a single, integral component of the support structure. Optionally, the handle can be attached to a base structure of the support structure as a detachable or non-detachable element. An operator can apply force to or into the support structure using muscle power and initiate or execute the relative movement of the support structure with this applied force. In this way, the muscle-assisted force can be used as a base force, which is then amplified by supporting forces, e.g.,by means of a balancer, which initially starts the relative movement and / or is present over at least a section of the movement path of the relative movement, preferably over a predominant movement path of the total movement path during the relative movement, particularly preferably over the entire movement path of the relative movement.

[0011] Alternatively or additionally, the adjustment device can include a motor to apply a kinetic force to the support structure. The motor can, for example, be configured to convert thermal, chemical, hydraulic, pneumatic, and / or electrical energy into kinetic energy to generate the kinetic force acting on the support structure. The motor can be activated, for example, by a basic force applied, particularly via a handle. For this purpose, a detection device can detect a basic force applied via the handle to move the support structure and, depending on this, activate and / or control the motor to apply an additional force to execute the relative movement between the support structure and the base structure. Thus, the motor can, for example, be operated in the manner of a balancer.

[0012] According to the invention, the multi-screw device comprises at least one holding means by which at least one component, which can be screwed onto a structure with at least two screws, can be held. It is possible that the support device comprises a holding means by which at least one component, which can be screwed onto a structure with at least two screws, can be held. The holding device can enable defined support or retention of the at least one component relative to the screws. In particular, the at least one component is held on the holding means in such a way that, during the movement of the support device to the structure to which the screws are to be attached, the component and the screws are moved into a predefined position and / or orientation relative to the structure.In particular, the component is pressed against the structure, and the fasteners are positioned in such a way that the fasteners can be tightened while simultaneously fixing, or at least pre-fixing, the component to the structure. Pre-fixing means that the fasteners are screwed into corresponding screw receptacles on the structure, but no final tightening occurs. Final tightening is defined as the tightening of a fastener to a predefined target or final insertion depth, a predefined target or final torque, and / or a predefined target or final angle of rotation.

[0013] In particular, the device can be used to thread or pre-fix the at least one component and the screw means used for this purpose onto the structure, wherein a final screwing operation, in which the screw means are tightened to a target or final screwing depth and / or torque and / or angle of rotation, is carried out with a separate screwing tool.

[0014] The vertical bearing device and / or the adjustment device can, for example, include or be designed as a balancing unit to compensate for the weight of at least the support device. Preferably, the balancing unit is configured to compensate for the weight of the support device and other parts supported by the support device. For example, the balancing unit compensates for the weight of the support device and / or the weight of the fasteners and / or the weight of at least one component, so that the relative movement of the support device and the base device can be carried out with a small amount of muscle force acting on the support device and / or motor-assisted forces.In other words, movement and thus feeding of the component carried by the support device to the structure can be carried out in an ergonomically advantageous manner, whereby the tightening of the screwing means can also be carried out in an ergonomically advantageous manner by a worker operating the device.

[0015] In an advantageous embodiment, a screw receptacle can be arranged or formed on the output of at least one screwdriving tool. This receptacle is designed to receive and / or hold one, and in particular a single, screwdriving tool in a ready position. A screwdriving tool can be attached to or mounted on the screwdriving tool via the screw receptacle. The screwdriving tool can be positioned on the screw receptacle of the screwdriving tool, for example, by gravity and / or by means of a clamping and / or magnetic force. In particular, the screwdriving tool can be secured against falling out of or off the screw receptacle, especially due to gravity, by means of a clamping and / or magnetic force.For example, a screw receptacle is provided for each screw tool, so that a screw can be held in a ready position for each screw tool. In particular, at least one screw is inserted or attached to the respective screw receptacle, for example by manual insertion or attachment.

[0016] For example, the multi-screwing device has at least one reservoir for storing fasteners on the support structure and / or the base unit. This makes it easier for the operator to use the multi-screwing device and improves its ergonomics, as the operator has to travel shorter distances to load fasteners onto the screwdrivers, especially the fastener holders of the screwdrivers, or the fasteners can remain within easy and convenient reach. The at least one reservoir can, for example, be detachably attached to the multi-screwing device, especially to the support structure and / or the base unit, so that the reservoir can also be replaced. This can be particularly useful for refilling fasteners.for providing the screwing means at the multi-screw device proves advantageous.

[0017] It is possible that a screw receptacle is arranged or formed on the output of at least one screw tool, wherein the screw receptacle has at least one spacer section configured such that, upon contact of a contact section, in particular an end section, of the spacer section with the structure and upon advanced tightening of the screw to, in particular into, the structure, the drive of the screw to engage with the output profile, or the drive of the screw to engage with the output profile of the screw tool. By means of the spacer section, a tightening or final tightening, i.e., a final tightening of the screw to, in particular onto or into, the structure, can be prevented, so that only threading or...This results in or achieves a tightening of the screw. In particular, a large number of screw turns can be performed during a non-final insertion or tightening of the screw onto the structure. Tightening the screw to the structure can be carried out, for example, in a further process step, especially using a different screw tool or tools.

[0018] The support device can, for example, comprise at least one centering and / or guiding means that corresponds to a counter-centering and / or counter-guiding structure of the structure and / or to a counter-centering and / or counter-guiding element of a component, wherein (a) the centering and / or guiding means and the counter-centering and / or guiding structure are arranged such that a predefined position and / or orientation of the support device relative to the structure is achieved during the approach and / or screwing of the at least two screw means to or with the structure, and / or (b) the centering and / or guiding means and the counter-centering and / or guiding element of the component are arranged such that a predefined position and / or orientation of the support device relative to the component is achieved during the approach of the component to the support device.In other words, during the assembly of the support structure with at least one component to be installed, the support structure and the at least one component can be guided and / or centered. Alternatively or additionally, the support structure can be guided and / or centered relative to the structure to which the at least two fasteners, or to which the at least two fasteners and the component, are to be screwed, by contact between the centering and / or guiding element and the counter-centering and / or guiding element on the structure.

[0019] It is possible that the multi-screw device includes or is connected to a power supply unit, enabling the vertical bearing device and / or the adjustment device to be powered by the power supply unit. For example, the power supply unit can provide electrical, pneumatic, or hydraulic power. The power supply unit can be designed, for example, as an energy storage device or as a device for connection to an external power source, such as a low-voltage network (e.g., 400 V or 230 V).

[0020] In an advantageous embodiment, the multi-screw device can include a roller assembly by means of which the base unit is mounted so as to be rollable relative to a mounting surface. Preferably, the roller assembly can have at least one wheel, and in particular a plurality of wheels, so that the base unit, and thus the multi-screw device, can be moved on its mounting surface with minimal effort, in particular by means of minimal muscle power.

[0021] The multi-screw device can, for example, include an input unit by means of which the screw tools carried by the support structure can be controlled, in particular activated and / or deactivated. The input unit can, for example, be designed as a push button which, through direct contact by a worker or through a scanning structure that activates at least one screw tool, preferably at least two, when the support structure is moved close to the structure and a predefined distance is reached.

[0022] In addition to the multiple screw device, the invention relates to a method for screwing at least two screw elements onto a structure using a multiple screw device described herein. A method for screwing elements can, for example, comprise the following: in a first step, at least two screw elements are fed to screw element receptacles of screw tools, and then, by setting the support device in motion and thereby performing a relative movement between the support device and the base device, the screw elements are fed to a structure onto which screwing of the screw elements is provided.

[0023] The method can, in particular, provide that, prior to a relative movement that brings the screw elements into contact with the structure, at least one component is inserted into a holding element of the multi-screw device, especially the support device or the base device. A relative movement of the support device then brings the screw elements and, in addition, the at least one component into contact with the structure. It can be provided that (a) at least one screw element comes into contact with the structure first, or (b) at least the component comes into contact with the structure first, or (c) at least one screw element and at least one component come into contact with the structure simultaneously.

[0024] In a preferred embodiment of the method, a preliminary step involves moving the multi-screw device across a mounting surface using its roller mechanism. This roller-assisted movement allows the multi-screw device to be positioned horizontally in relation to the structure. Once the multi-screw device is positioned below the structure, the relative movement of the support structure and the base structure, or the lifting of the support structure, can be performed. It is possible for a further roller-assisted movement of the multi-screw device to be performed during the lifting movement of the support structure or during the relative movement, particularly to make minor adjustments to its position perpendicular to the vertical axis or to its vertical movement.The movement of the multi-screw device supported by the roller mechanism and / or the relative movement can be performed, for example, by a worker using muscle power. In particular, the worker can push or pull the multi-screw device towards a structure and, by applying a pulling and / or pushing force, initiate the lifting movement of the support device and thus of the fasteners, the component, and the screw tools, especially when using a balancer.

[0025] All advantages, details, designs and / or features of the multiple screw device according to the invention are transferable or applicable to the method according to the invention and vice versa.

[0026] The invention is explained in more detail with reference to an embodiment shown in the drawing. The drawing shows... Fig. 1 A schematic representation of a multi-screw device equipped with screw elements, according to an exemplary embodiment; Fig. 2 a schematic representation of the multiple screw device according to Fig. 1, wherein the multi-screw device is equipped with screw means and a component; Fig. 3 a schematic representation of the multiple screw device according to Fig. 1 and Fig. 2, wherein the support device is raised or extended into an approximate position in contact with a structure.

[0027] The exemplary multi-screw device 1 serves to screw on at least two screws 2, 3, whereby at least one component 30 is fastened to a structure 20 by means of the screws 2, 3. The structure 20 can, for example, comprise a vehicle body and / or a vehicle component, or be formed accordingly. The multi-screw device 1 includes a support device 4 on which at least two screwdrivers 5, 6 for screwing on the screws 2, 3 are arranged. The screwdrivers 5, 6 can, for example, be cordless screwdrivers or be connected to and supplied with power from a low-voltage network (e.g., a 230 V or 400 V network). It is possible to use screwdrivers 5, 6 that have a relatively simple design.In particular, at least one of the screwdriving tools 5, 6, preferably all of the screwdriving tools 5, 6 used, can have a torque limiter, in particular exclusively a mechanically operating one.

[0028] The at least two screw elements 2, 3 are designed to be received into or screwed into screw receptacles 25, 26 of the structure 20. The screw elements 2, 3 and / or the structure-side screw receptacles 25, 26 engage through a recess in the component 30, or project into or through the recess of the component 20.

[0029] The multi-screw device 1 further comprises a base unit 7, which supports the support unit 4 against a mounting surface 8. The mounting surface 8 can, for example, be the floor of a factory building. Typically, the mounting surface 8 can be designed as a flat surface. A vertical bearing unit 9 is configured to execute a relative movement 10 between the support unit 4 and the base unit 7, particularly exclusively vertically. For example, the vertical bearing unit 9 is designed as a linear bearing and enables a relative movement 10 between the support unit 4 and the base unit 7 that is guided, particularly exclusively, vertically or perpendicular to a flat mounting surface 8.A force 12, particularly muscle-powered, is applied to the support device 4 via an adjustment device 11 to execute the relative movement 10 for bringing the at least two screw elements 2, 3 into contact with and screwing them onto a structure 20 that receives the screw elements 2, 3. This screwing can be a final tightening or merely a threading, i.e., a screwing that does not result in a predefined target penetration depth and / or target torque and / or angle of rotation for this screw connection (e.g., for a torque screw connection). Thus, the multi-screw device 1 can be used, for example, for quickly and conveniently attaching or pre-fixing the screw elements 2, 3 to the structure 20, particularly with further pre-fixation of the component 30 to the structure 20.

[0030] The adjusting device 11 can, for example, be designed as a handle 13 for applying a muscle-powered force 12 to the support device 4. The handle 13 can, for example, be designed as a grip or as another element suitable for applying a muscle-powered tensile and / or compressive force generated by a worker to the support device 4. Alternatively or additionally, the adjusting device 11 can, for example, include a motor 14 for applying a force 12 to the support device 4. The motor 14 can, alone or as an additional means, apply a force to the support device 4, which leads to the relative movement 10 of the support device 4 and the base device 7.

[0031] The support device 4 can, for example, comprise a holding element 15 by means of which at least one component 30, which can be screwed to a structure 20 by means of at least two screws 2, 3, can be held. The holding element 15 can be configured to enable a defined position and / or orientation of the component 30 relative to the support device 4 and / or to the structure 20. It is also possible that a component 30 held by the holding element 15 is moved or movable when the multi-screw device 1 moves in space, preferably a movement perpendicular to the bearing direction. This could, for example, be the movement of the multi-screw device 1 supported by rollers. The holding element 15 can enable at least partial point support and / or at least partial area support of the component 30 to be held.In particular, the holding means 15 is configured to hold a component 30 held by the holding means in a single position and / or orientation relative to the support device 4. Preferably, the at least one component 30 can be held or attached to the holding means 15 by forming a force-fit and / or form-fit connection, particularly in or on it, especially in or on the holding means 15.

[0032] The vertical bearing device 9 and / or the adjustment device 11 can, for example, include or be configured as a balancing unit for compensating the weight force of at least the support device 4. Preferably, the balancing unit is configured to compensate for the weight force of the support device 4 and other parts supported by the support device 4. In other words, the balancing unit can enable a relative movement of the support device 4 and the base device 7 by applying muscle power with minimal effort, since the balancing unit compensates for the weight forces of the support device 4 and the screw elements 5, 6 and component 30.

[0033] The vertical storage device 9 can, for example, be used to provide, in a first height or extension position of the support device 4, the multiple screw device 1 with screw means 5, 6 and, in a second height or extension position, to enable the attachment of at least one component 30 to the at least one holding means 15 and, in a third height or extension position, to bring the screw means 2, 3, in particular additionally the at least one component 30, into contact with the structure 20 or bring it close to it for a screwing process to be carried out.

[0034] At least one drive of a screw tool 5, 6, and in particular at the drives of all screw tools 5, 6 supported by the support device 4, can, for example, be provided with at least one screw receptacle 16, which is configured to receive and / or hold one, in particular a single, screw tool 2, 3 in a ready position. For example, a screw receptacle 16 is provided or configured on each of the respective screw tools 5, 6, so that a screw tool 2, 3 can be positioned on each of these. Preferably, the screw tools 2, 3 can be positioned on the screw receptacle(s) 16 such that, when the multi-screw device 1 is moved in space, in particular perpendicular to a vertical relative movement 10, they can be moved securely and / or while maintaining their intended position and / or orientation.

[0035] A screw receptacle 16 can, for example, be arranged or formed on the output of at least one screwdriving tool 5, 6, wherein the screw receptacle 16 has at least one spacer section 17 which is configured such that, when a section of the spacer section 17, in particular an end of the spacer section 17, comes into contact with the structure 20 and when the screwdriving tool 2, 3 is advanced into, in particular into, the structure 20, the screwdriving tool 2, 3 is disengaged from the output profile. In other words, the screwdriving torque and / or screw-in depth and / or screw-in angle can be limited by means of the contact of the spacer section 17 with the structure 20.In particular, the spacer section 17 ensures that the screwed screw element(s) 2, 3 do not form a final screw connection, but rather that a further, i.e., final, screw connection of the screw elements 2, 3 takes place in a later process step.

[0036] The support device 4 can, for example, comprise at least one centering and / or guiding means 18, which corresponds to a counter-centering and / or counter-guiding structure 21 of the structure 20 and / or to a counter-centering and / or counter-guiding element 31 of a component 30, wherein (a) the centering and / or guiding means 18 and the counter-centering and / or guiding structure 21 are configured such that, during the approach and / or screwing of the at least two screw means 2, 3 to or with the structure 20, a predefined position and / or orientation of the support device 4 relative to the structure 20 is achieved, and / or (b) the centering and / or guiding means 18 and the counter-centering and / or guiding element 31 of the component 30 are configured such that, during the approach of the component 30 to the support device 4, a predefined position and / or orientation of the support device 4 relative to the component 30 is achieved. becomes.It is also possible to design the centering and guiding means 18 on the support device side in such a way that it acts both for the counter-centering and / or guiding structure 21 of the component 20 and for the counter-centering and / or guiding element 30 of the component 30.

[0037] It is possible that the multi-screw device 1 includes a power supply unit 19 for supplying the vertical bearing device 9 and / or the adjustment device 11 with energy, in particular electrical, pneumatic or hydraulic energy. For example, the power supply unit 19 can be designed as an energy storage device and can be detachably or permanently attached to the multi-screw device 1 and in particular to a support device 4 and / or to a base device 7 of the multi-screw device 1.

[0038] In an optional embodiment, the multi-screw device 1 can include an input unit 22 by means of which the screw tools 5, 6 carried by the support device 4 can be controlled, in particular activated and / or deactivated. Thus, for example, an operator using the multi-screw device 1 can, by actuating the input unit 22, e.g., a button and / or a touchscreen, send a control signal to the at least one screw tool 5, 6, which leads to the activation and / or deactivation of the at least one, in particular all, screw tools 5, 6 carried by the support device 4.

[0039] It is possible that the multi-screw device 1 includes a roller device 23 by means of which the base device 7 is mounted so as to be movable relative to a mounting surface 8. The roller device 23 can, for example, have wheels, so that the multi-screw device 1, in particular the base device 7, can be moved by muscle power and / or by a motor driving at least one of the wheels. By means of the roller device 23, the multi-screw device 1 can be moved, shifted, or pulled to a destination intended for carrying out a multi-screwing process.

[0040] It is possible to detachably or permanently attach at least one storage container 27 to the multi-screw device 1, in particular to the support device 4 and / or to the base device 7. This enables the loading of the screw receptacles 16, particularly manually, without requiring a large distance or within the reach of a worker standing at the multi-screw device 1.

[0041] The invention further relates to a method for screwing at least two screw means 2, 3 onto a structure 20 using a multiple screw device 1 described herein. Reference symbol list 1 Multi-screw device 2 first screwdriving tool 3 more screwdriving tools 4 Support device 5 first screw tool 6 additional screwdrivers 7 Basic setup 8 Installation area 9 Vertical storage device 10 Relative motion 11 Adjustment device 12. Kinetic force 13. Handling 14 engine 15 holding devices of 4 16 Screw receptacle 17 Distance section 18 centering and / or guiding devices of 4 19 Energy supply unit 20 Structure (e.g., assembly) 21 Counter-centering and / or counter-guiding structure of 20 22 Input unit 23 Rolling device 24 Energy supply line 25 screw mount of 20 for 2 26 screw mount of 20 for 3 27 storage containers 30 components 31 Counter-centering and / or counter-guiding element of 30

Claims

[1] Multiple screw device (1) for screwing on at least two screw elements (2, 3), comprising - a support device (4) on which at least two screw tools (5, 6) are arranged for screwing on the screw means (2, 3); - a base unit (7) that supports the support unit (4) against a mounting surface (8); - a vertical support device (9) which is designed to perform a relative movement (10) of the support device (4) and base device (7), in particular exclusively vertical movement; - an adjusting device (11) for applying a movement force (12), in particular muscle-powered, to the support device (4) for carrying out the relative movement (10), for bringing the at least two screw means (2, 3) towards and screwing them onto a structure (20) receiving the screw means (2, 3), characterized by, that the multiple screw device (1) comprises at least one holding means (15) by means of which at least one component (30) can be screwed to a structure (20) with the at least two screw means (2, 3). [2] Multi-screw device (1) according to claim 1, characterized by , that the adjusting device (11) is designed as a handle (13) for applying a muscle-assisted movement force (12) to the support device (4). [3] Multi-screw device (1) according to claim 1 or 2, characterized by , that the adjusting device (11) includes a motor (14) for applying a kinetic force (12) to the support device (4). [4] Multi-screw device (1) according to one of the preceding claims, characterized by , that the support device (4) includes the holding means (15) by means of which at least one component (30) can be screwed to a structure (20) by means of the at least two screw means (2, 3). [5] Multi-screw device (1) according to one of the preceding claims, characterized by , that the vertical bearing device (9) and / or the adjustment device (11) includes or is designed as a balancing unit for compensating the weight force of at least the support device (4), preferably the balancing unit is configured to compensate the weight force of the support device (4) and other parts which are supported by the support device (4), particularly preferably the weight force of the support device (4) and the screw means (2, 3) and of the at least one component (30) can be compensated by means of the balancing unit. [6] Multi-screw device (1) according to one of the preceding claims, characterized by, that a screw receptacle (16) is arranged or formed on an output of at least one screw tool (5, 6) which is designed to receive and / or hold a screw, in particular a single, screw (2, 3) in a ready position. [7] Multi-screw device (1) according to one of the preceding claims, characterized by , that a screw receptacle (16) is arranged or formed on an output of at least one screw tool (5, 6), wherein the screw receptacle (16) has at least one spacer section (17) which is arranged such that, when an end of the spacer section (17) comes into contact with the structure (20) and when the screw means (2, 3) is advanced into, in particular into, the structure (20), a drive of the screw means (2, 3) is brought out of engagement with the output profile of the output of at least one screw tool. [8] Multi-screw device (1) according to one of the preceding claims, characterized by , that the support device (4) comprises at least one centering and / or guiding means (18) which corresponds to a counter-centering and / or counter-guiding structure (21) of the structure (20) and / or to a counter-centering and / or counter-guiding element (31) of a component (30), wherein - the centering and / or guiding means (18) and the counter-centering and / or guiding structure (21) are arranged such that, during the approach and / or screwing of the at least two screw means (2, 3) to or with the structure (20), a predefined position and / or orientation of the support device (4) to the structure (20) is achieved and / or - the centering and / or guiding means (18) and the counter-centering and / or guiding element (31) of the component (30) are arranged such that, during the approach of the component (30) to the support device (4), a predefined position and / or orientation of the support device (4) to the component (30) is achieved. [9] Multi-screw device (1) according to any one of the preceding claims, characterized by a power supply unit (19) for supplying the vertical storage device (9) and / or the adjustment device (11) with energy, in particular electrical or pneumatic or hydraulic energy. [10] Multi-screw device (1) according to any one of the preceding claims, characterized by an input unit (22) by means of which the screw tools (5, 6) carried by the support device (4) can be controlled, in particular activated and / or deactivated. [11] Multi-screw device (1) according to any one of the preceding claims, characterized by a rolling device (23) by means of which the base device (7) is mounted so as to be rollable relative to a mounting surface (8). [12] Method for screwing at least two screw means (2, 3) onto a structure (20) using a multi-screw device (1) according to one of the preceding claims.

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