Mounting device

Abstract

An installation device (100) for installing roof coils and thermal insulation layers on a substructure uses an assembly consisting of a fastener (210) and a ferromagnetic load distribution gasket (200) when installed. The apparatus comprises a movable frame (130) on which a first feeding device (110) for conveying load distribution shims and a second feeding device (120) for conveying fasteners are provided. The installation process is started from manual operation of a vertically arranged compression bar (145) capable of resisting the spring force to stretch out and draw back. A drive unit (150) provided on the pressure lever has an electrically driven drive shaft (155) which pushes the fastener out of the mounting guide through a load distribution pad secured in the equipment bottom assembly mounting bracket. In the process, a magnetic system design is adopted, so that the load distribution gasket to be mounted can be suspended and fixed in the mounting bracket without an additional mechanical fixing device.

Description

TECHNICAL FIELD

[0001] The invention relates to a mounting device for screwing down a flat roof system, for example a roof membrane (sheet), a metal sheet, a plasterboard and a thermal insulation layer on a flat roof. BACKGROUND

[0002] In the construction of flat roofs, in particular of flat roofs of industrial buildings, it is common practice to lay one or more thermal insulation layers on a static load-bearing roof surface made of wood, steel or concrete in order to achieve thermal insulation. In order to protect these thermal insulation layers from the effects of weather, it is common practice to use a roof membrane made of plastic (roofing membrane or roof membrane). These roof membranes are laid over large areas and are connected to one another in the overlap region (edge) by means of adhesion or welding. Both the thermal insulation layer and the roof membrane must be fixed to the base structure. In a base structure made of wood or metal sheet, a known method of fixing is to use self-drilling screws of corresponding length to fix the roof membrane or the thermal insulation layer. These screws are provided with a round or square load-distributing washer, similar to a larger washer, by means of which the tensile force of the screw is distributed evenly to the surface of the roof membrane or the thermal insulation layer. Subsequently, a sealing membrane is usually connected to the load-distributing washer by means of adhesion-welding.

[0003] The installation of such fasteners is a tedious process, since on a large-area roof, several thousand such fastening points can have to be installed precisely.

[0004] In addition to this main application, this method of fastening with screws and load-distributing washers is also suitable for other materials in which the tensile force of a screw is to be distributed evenly to the surface.

[0005] Some mounting devices have been known for a long time in the prior art, which simplify the installation of a load-distributing washer in combination with a self-drilling screw, in particular enabling the operator to work in a standing position.

[0006] A fundamental problem with such mounting devices is that the combination of the load-distributing washer with the fastener (screw) is only completed shortly before the installation operation. Usually, a load-distributing washer is removed from a stack of load-distributing washers by means of a sliding slide and fed to the installation position. The supply of screws is carried out separately by means of a drop tube, which manually feeds a screw into a centering or guide sleeve, which serves as an installation guide. Alternatively, a magazine strip can be provided, from which a screw is separated by means of a pressure rod moving downward each time the installation operation is carried out.

[0007] The guide sleeve of the installation guide is in principle calibrated and configured in such a way that the drill of the screw is aligned from above with the opening of the load distribution mat and fixed in place. Subsequently, the bit of the drive unit is inserted from above into the force application area of the screw, which is guided and driven by the bit. By pressing the handle, the drive unit guides the screw vertically through the load distribution mat into the insulation layer and drills it into the load-bearing base structure. Ideally, only when the screw head has descended to the point where the load distribution mat has to be pushed, does the load distribution mat detach from its installation position and is pressed onto the insulation layer.

[0008] EP 0 621 108 A1 discloses such a device. In this device, the fixation of the load distribution mat in the installation position is achieved by means of a detent pawl, the locking state of which is released mechanically.

[0009] EP 0 003 004 A1 provides pivots or flaps, which provide the load distribution mat with a holding position secured by spring force, which can be switched into the release position in time for the installation process by means of a control lever.

[0010] Therefore, the device for holding the load distribution mat in the installation position during the installation process has to fulfill two tasks, which are contradictory to each other: On the one hand, it has to ensure that the load distribution mat is in an exact position, which cannot be moved. On the other hand, it has to release the load distribution mat in time, neither too early nor too late, in order not to disturb the installation process. The corresponding solution should not be too complex in terms of mechanical construction, should be reliable both in the clamping and in the release, and should be suitable for use in the environment of a construction site.

[0011] The task of the present invention is to replace these mechanical holding devices by a simplified holding system. SUMMARY

[0012] The task is solved by using a magnetic holding of the load distribution mat in the installation position.

[0013] An installation device designed to solve the task is able to fix an assembly consisting of a fastener and a ferromagnetic load distribution mat through an insulation layer on a base structure. For this purpose, its basic structure comprises a movable frame, on which a first feeding device for feeding the load distribution mat and a second feeding device for feeding the fastener are arranged. Such an installation device is moved over large-area flat roof surfaces, so that a combination of a single-wheel axle and a support has proven to be able to position the installation device safely in the respective position during the work process.

[0014] It is known from the prior art that the installation process is performed by means of a manually operated element, which has a vertically arranged, spring force overcomable pressure rod. A drive unit is mounted on the operating element, which has a drive shaft driven by an electric motor and is able to drive the fasteners during the installation process. Usually, the drive unit is a drill and is battery powered in order to avoid trailing cables. The drive shaft is usually provided with a blade-shaped drive head at its open end, which is able to engage with the head of the fastener. The longitudinal axis of the drive shaft defines the working reference axis; when the installation device is in the working position, the working reference axis is usually perpendicular to the base (roof surface).

[0015] As mentioned before, the combination of load distribution pads and fasteners is usually used to fix an insulation layer on the roof of an industrial building. Due to the large number of repetitive fastening operations and the required high installation quality, a smooth work flow is of great importance. In the installation device described herein, this goal is achieved by an installation holder for the load distribution pads and an installation guide for the fasteners, which both provide a standby position for the installation operation in the installation device.

[0016] The load distribution pads suitable for installation usually have a substantially flat, disc-like profile extending in a main plane and a centrally arranged through hole. The term "disc-like in a main plane" does not only refer to a purely flat, planar design. The main plane refers to the plane in which the load distribution pad mainly extends. The load distribution pads of the described type have a rotationally symmetrical basic shape, which is adapted to the use of the installation device described herein.

[0017] The load distribution pads for the described use can be provided with stiffening ribs to increase rigidity and with dot-shaped lugs or claw-like structures to improve the fixation of the load distribution pads on the insulation layer. For practical reasons, the load distribution pads are usually designed in a form that allows easy stacking. They are mostly made of galvanized steel sheet by means of stamping and die pressing. In order to avoid stamping waste, a square or polygonal basic shape is more suitable.

[0018] The first feeding device (for the load distribution pads) is designed in such a way that it is able to transport each load distribution pad individually from a magazine (stock of load distribution pads) or a single feeding device to the installation holder. The second feeding device (for the fasteners) can be equipped with a feeding channel for the insertion of individual fasteners or a separating device for separating the fasteners from a magazine strip. The feeding device transports the fasteners individually to the installation guide. The installation guide in turn ensures the alignment and positioning of the individual or separated fasteners along the working reference axis.

[0019] The design of the mounting bracket is such that the load distribution pad is arranged on the bearing surface in the mounting position in such a way that the work reference axis is aligned with the through-hole of the load distribution pad. Thus, the load distribution pad is aligned with the fastening element. In the mounting position, the main plane of the load distribution pad is parallel to the bearing surface or coincides with the bearing surface. The term "bearing surface" does not necessarily mean that the mounting bracket provides the load distribution pad with a bearing surface as large as possible. For example, it can also be a ring-shaped bearing surface which is arranged symmetrically around the work reference axis. Depending on the type, size and weight of the load distribution pad, it is also possible to use a point bearing.

[0020] It has been shown in practice that, depending on the design of the mounting bracket and the type of load distribution disc, the mechanical longitudinal and lateral stops in the mounting bracket can be dispensed with, which in some cases simplifies the operation since the risk of jamming or tilting is greatly reduced.

[0021] This is achieved, in particular, by providing a magnet system in the mounting bracket, the magnetic force of which is designed in such a way that the load distribution pad to be mounted is suspended in the mounting bracket without additional mechanical fixing means. The magnet system is designed in such a way that, on the one hand, it reliably holds the load distribution pad in the mounting position and, on the other hand, it releases it in time during the mounting process. The expression "without additional mechanical fixing means" is to be understood here as meaning that, in the absence of the magnet system, the load distribution pad would fall out of the mounting bracket.

[0022] The magnetic field can be generated by a permanent magnet assembly or by one (or more) electromagnetic coils. Magnets, in particular permanent magnets, are available in a wide variety of sizes, shapes and magnetic field strengths from commercial sources. It is possible for the person skilled in the art to determine by simple tests how the above-mentioned holding and releasing conditions can be met. In doing so, the person skilled in the art takes into account both the weight of the load distribution pad and the possibilities of arranging the magnets in the mounting bracket. By means of a modular construction, the mounting bracket can be designed in such a way that it is replaceable in the mounting device, so that a magnet system specially tailored to the type of load distribution pad can be used.

[0023] The magnet system can thus consist of a ring-shaped permanent magnet, a ring-shaped coil or a plurality of strip magnets which are arranged symmetrically around the work reference axis in the mounting bracket. It is particularly preferred to arrange the magnets symmetrically around the end region of the fastening element guide in a plane which is close to or parallel to the bearing surface. A magnet field which is rotationally symmetrical around the work reference axis does not in fact have any effect on the fastening element, which can also be ferromagnetic, since the fastening element is located on the work reference axis and no resultant force is exerted on it by the magnetic field at this position.

[0024] As will be described later, the symmetrical magnetic field helps to center the load distribution pad in the mounting position. In addition, mechanical centering means can be added, for example profile elements in the mounting bracket which form a form fit with corresponding profile areas on the load distribution pad. In addition, a mechanical stop (end stop) can be provided in the mounting bracket to limit the movement of the load distribution pad along the push track in the mounting bracket.

[0025] The mounting bracket forms part of the bottom assembly of the mounting device, which also comprises a base plate and other components. In this connection, further explanations will be given in connection with Figure 2 The magnets can be embedded in corresponding recesses in the bottom assembly. The material used for such mounting devices is often aluminum, in which corresponding openings can be machined. Alternatively, the magnet system can be mounted replaceably in or on the bottom assembly, so that, for example, magnets of different magnetic force can be provided for load distribution pads of different weight.

[0026] The shape, magnetic force, direction of the poles and the arrangement of the magnets are determined by the person skilled in the art, preferably by trial on the corresponding mounting device. In the present mounting device, permanent strip magnets or ring magnets have been successfully used. For example, an arrangement of two or three strip magnets can be realized. When two strip magnets of the same magnetic force are arranged symmetrically around the mounting guide of the fastening, it has been shown in practice that the direction of the poles has no influence on the function. If three strip magnets are arranged along the sides of an equilateral triangle, it is recommended to arrange the south pole of each magnet opposite the north pole of the next magnet.

[0027] Short strip magnets, for example cylindrical, can also be used, the magnetic field of which is preferably arranged parallel to the working reference axis. The polarity of the individual magnets must be oriented in such a way that the symmetry of the magnetic field is satisfied, which can be determined by trial.

[0028] Today, permanent magnets are produced on an industrial scale in such a way that a neodymium-iron-boron alloy is made into a powder, compacted and then magnetized according to the requirements of use. In this way, magnets of very diverse shape and polarization direction can be obtained.

[0029] In addition to the symmetrical field design around the work reference axis, it has been shown in practice that it is useful to add an asymmetrical component. This component generates a static field component in the mounting holder, which exerts a resultant force on the load distribution pad in the mounted position. The asymmetrical design is such that one vector component of this resultant force points in the direction of the extension of the push track, away from the mounted position. The reason for this design is that, when the load distribution pad is fed into the mounting holder, there is always a field component that "pulls" the load distribution pad in the direction of feed. Although a symmetrical magnet system can also generate this in principle before the load distribution pad reaches the central position, depending on the type, size and weight of the load distribution pad, it is advantageous to add a component that does not disappear.

[0030] This asymmetry can in principle be achieved in two ways: either by an additional or supplementary magnet, as described above, to achieve the corresponding resultant asymmetry, or by an asymmetrical arrangement of the magnets themselves that make up the magnet system to generate the asymmetrical component.

[0031] A method for mounting a load distribution pad by means of a fastener using a mounting device as described herein comprises the following steps. The person skilled in the art will be aware that certain steps (movement processes) described here in logical succession can also be carried out simultaneously or partially overlapping in time. The steps of the method are as follows:

[0032] A mounting device is provided, which has a magazine with a supply of load distribution pads and provides at least one fastener by means of a second feeding device.

[0033] The mounting device is positioned at the target position.

[0034] The actual mounting process begins with the pressing of an operating element on the movable frame, whereupon the vertical movement of the pressure lever is converted into:

[0035] on the one hand, the horizontal movement of the feeding blade on the push track,

[0036] on the other hand, the lowering movement of the drive shaft driven by the drive unit along the work reference axis, and

[0037] centering of the fastener in the mounting guide on the work reference axis.

[0038] whereby, by means of the horizontal movement of the feeding blade, an individual load distribution pad is pushed from the magazine through the passage along the horizontal push track into the mounting holder.

[0039] At this point, the load distribution pad is released from the mechanical guidance into the mounting space of the mounting holder, and the magnetic field of the magnet system attracts the load distribution pad into the mounted position and temporarily fixes it there. It makes no difference in this basic movement process whether the magnet system is designed symmetrically or asymmetrically.

[0040] At this point, the load distribution pad is pressed against the attachment surface by the magnetic force of the magnet system and is fixed in position. The magnetic field allows the load distribution pad to be centered around the work reference axis without the need for additional mechanical clamps and fixing devices, and the work reference axis is aligned with the through-hole of the load distribution pad.

[0041] In the subsequent phase of the installation process, the fastener guided and driven by the drive shaft can be passed through the through-hole. With further lowering, the fastener head abuts the through-hole and lifts the load distribution pad off the attachment surface against the magnetic force. When the fastener is anchored in the base structure and the load distribution pad is fixed to the work surface as specified and used to fix the thermal insulation, the installation process is complete.

[0042] In the next step, the installation device is returned to its initial position by vertically resetting the operating element, and is then ready for the next installation operation. The resetting process can be assisted by spring force.

[0043] The installation process described above can also be carried out in another way, namely the loading of the installation holder with the load distribution pad is not carried out by pressing the operating element before the installation process, but by vertical resetting after the installation process. The advantage of this movement sequence is that the spring-assisted resetting action can assist the loading operation of the installation holder, so that in the actual installation process, the installation holder already has the centrally positioned load distribution pad pre-positioned.

[0044] In the first method variant, the preparation of the fastener and the load distribution pad is part of the installation process and is carried out in one go.

[0045] The disadvantage of the second method variant is that before the first actual installation process, a load distribution pad must be delivered into the installation holder, which is usually done by means of a "dummy" installation process (without fastener). In addition, after the last installation process, there can be a load distribution pad left in the installation holder, which must then be removed manually. Despite this, both methods are feasible in the respective application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 A side view of the installation device according to the present description is shown.

[0047] Figure 2 Details of the installation holder of the installation device are shown.

[0048] Figure 3A A loaded installation holder with a symmetrical magnet system is shown.

[0049] Figure 3BA loaded mounting bracket with asymmetric components is shown.

[0050] Figure 4 A cross-sectional view of a load distribution washer is shown.

[0051] Figure 5 Examples of possible arrangements of magnets as a magnet system in a mounting bracket according to the mounting device described herein are shown.

[0052] Figure 6 An exemplary structure of an industrial building roof with trapezoidal steel sheets as base structure and a laid-on insulation layer is shown.

[0053] Figure 7 An exemplary relative position of a load distribution washer and a fastener before the mounting process is shown.

[0054] Figure 8A 、 Figure 8B 、 Figure 8C A magnet system with asymmetric components with additional vector components is shown. DETAILED DESCRIPTION

[0055] Figure 1 The structure of a mounting device of the type described herein is outlined. The description will start at the bottom of the standing device and proceed from bottom to top.

[0056] The mounting device 100 shown in the figure comprises a bottom assembly 310 which accommodates a mounting bracket 300 (not shown in the figure) and a magazine 400. The magazine 400 constitutes here the visible part of the first feed device 110 for load distribution washers. A wheel axle 390 is provided at the rear end of the bottom assembly 310 (the side facing the operator). The bottom assembly 310 and the wheel axle 390 together constitute a mobile frame 130.

[0057] The mounting process itself is mainly realized by manual pressing of operating elements 140, which are represented in this figure by two handles (only one is shown in the figure). By moving downwards, a pressure lever 145 is moved downwards along a work reference axis 900, which downward movement is transmitted to the first feed device 110 and the second feed device 120 by means of a lever unit 160. The second feed device can be recognized from the feed channels 125 for individual fasteners. A drive unit 150 is provided in the handle area, which acts on a drive shaft 155 (not shown in the figure).

[0058] Figure 2 The main components of the mounting bracket 300 for load distribution washers 200, the magazine 400 and the mounting guide 320 for fasteners 210, which are jointly arranged in or constitute part of the bottom assembly 310, are highlighted. The mounting bracket 300 is shown in the figure in a perspective view. Figure 2In the middle, the magazine 400 is located on the right side, in which a stack of reserve load distribution washers 410 is placed. To move a load distribution washer 200 from the magazine 400 to the mounting bracket 300, it is pushed horizontally along the push rail 350 in the channel 355 until the load distribution washer 200 is aligned with the mating surface 330 and is attracted there by the magnet system 500. This horizontal pushing is achieved by means of the feed blade 340, which is driven by the lever unit 160, the direction of movement of which is indicated by the arrow. In the mounting bracket 300, the load distribution washer 200 is magnetically attracted to the mating surface 330. It is shown centered around the work reference axis 900, along which a fastener 210 and a drive shaft 155 engaging the fastener are also provided. From Figure 2 It is clear from the middle that the downward movement of the drive shaft 155 will guide the fastener 210 through the through-hole 220 of the load distribution washer. Subsequently, the head of the fastener 210 will rest against the flange or recess 240 of the through-hole 220, which will directly result in the load distribution washer being released from the magnetic fixing means of the mounting bracket 300.

[0059] Figure 2 The lower half is a top view. The push rail can be designed as a channel with only narrow side guides or side supports 360. The feed blade 340 is only shown schematically. An advantage of the magnetic fixing means is that there are no mechanical elements in the mounting bracket 300 that would hinder the release of the load distribution washer 200 during the installation process, so the risk of jamming is greatly reduced.

[0060] Figure 3A and Figure 3B is Figure 2 is a close-up of the lower half of Figure 2 with only minor changes in the area of the mounting bracket 300. The components associated with have already been explained and will not be described again here.

[0061] In Figure 3A , the fastener and drive shaft have been omitted. The figure shows optional mechanical centering and stop means (370, 380) that can be installed in the mounting bracket for ensuring correct placement and centering of the load distribution washer 200. As shown, the mechanical centering means 380 are inserted into the recess 240 in a form-fitting or point contact manner, which facilitates correct mating of the load distribution washer and does not hinder subsequent engagement of the fastener. Likewise, the mechanical stop 370, which serves as a longitudinal limit, also comes into play. The person skilled in the art will choose such means according to the specific circumstances and technical requirements. It is important that the mechanical stop and centering means (370, 380) are not mechanical fixing means and do not assist the fixing process.

[0062] Figure 3B comprises Figure 3AThe mechanical centering device has already been mentioned and explained. What is new is an exemplary asymmetric component, which can be added to the symmetric magnet system 500. Here, an additional magnet is installed, which is intended to specifically support the pushing movement at the end of the pushing movement from the magazine 400 to the mounting bracket 300.

[0063] Figure 4 A diagonal cross-sectional view of the load distribution washer 200 is shown, which shows the through hole 220 and the main plane 230. Figure 7 The same load distribution washer is shown at an oblique angle, as well as a fastener 210, which is arranged along the work reference axis 900 and at a distance from it. In both figures, the work reference axis 900 is shown through the through hole 220. The (fixed) lugs 250 contribute to the secure fixing of the load distribution washer 200 after installation, while also preventing rotation. From Figure 7 It can be clearly seen that the head of the fastener 210 can be embedded in the recess 240 of the load distribution washer 200 after installation, so that it does not protrude above the surface of the load distribution washer 200.

[0064] Figure 6 An application scenario of the installation device described herein is shown, namely the fixing of a roof covering 470 on a base structure (ladder sheet) 460 via a thermal insulation layer 450. There are also thermal insulation materials that can form a form fit with the cross-sectional shape of the ladder sheet.

[0065] Figure 5 Various arrangements of magnets are shown, which together form a (symmetric) magnet system 500, in accordance with the description herein. The view is in the direction of the work reference axis (perpendicular to the drawing plane, not shown). Starting in the upper left corner and proceeding clockwise: (1) a single ring magnet, symmetrically arranged around the work reference axis; (2) a plurality of cylindrical magnets, also arranged in a circle around the work reference axis, the polarity of which is preferably also symmetrically distributed; (3) strip magnets arranged in an equilateral triangle, since the number of magnets is odd, it is recommended to arrange the south pole end of each magnet opposite the north pole end of the next magnet; (4) an arrangement of two strip magnets, which has been shown to have no effect on the function of the magnetic poles.

[0066] Figure 8A and Figure 8C The arrangement of the symmetric magnet system 500 around the installation guide 320 is shown, supplemented by a separate asymmetric component 510. Equivalent to this, Figure 8A the arrangement in Figure 8B can be developed into an asymmetric structure, as shown.

Claims

1. A mounting device (100), characterized by For mounting an assembly consisting of fasteners (210) and ferromagnetic load-distributing washers (200) for fastening a roof covering (470) and a thermal insulation layer (450) to a base structure (460), the device comprises a movable frame (130) on which are arranged: - a first feeding device (110) for feeding the load-distributing washers; - a second feeding device (120) for feeding the fasteners; - an operating element (140) with a vertically arranged and telescopically extendable pressure rod (145) against a spring force for the mounting operation; - a drive unit (150) arranged on the operating element, equipped with an electrically driven drive shaft (155) for driving the fasteners during the mounting process, the longitudinal axis of the drive shaft defining a working reference axis (900); - a mounting holder (300) for fixing the load-distributing washers in the mounting position; - a mounting guide (320) for positioning the fasteners in the mounting position; wherein: - the load-distributing washers (200) to be mounted have a substantially flat disc-like profile extending along a main plane and provided with a centrally arranged through hole (220); - the first feeding device (110) is designed to feed the load-distributing washers (200) one by one from a magazine (400) or a separate feeding device along a push track (350) to the mounting holder (300); - the second feeding device (120) feeds the fasteners (210) one by one from a feeding channel (125) or a tape to the mounting guide (320); - the mounting guide (320) is designed to center and position the individual fasteners along the working reference axis (900); - the load-distributing washers (200) are placed on the mounting holder (300) in the mounting position on a contact surface (330) such that the working reference axis (900) passes through the through hole (220) of the load-distributing washer (200); - a magnet system (500) is arranged in the mounting holder (300) which generates a magnetic field in the mounting holder (300) with a field strength designed such that the load-distributing washers (200) to be mounted can be suspended in the mounting holder (300) without additional mechanical fixing means.

2. The mounting apparatus of claim 1, wherein - the magnet system (500) is arranged in a plane parallel to the contact surface (330) in a spaced manner.

3. Mounting device according to claim 1 or 2, characterized in that - the magnet system (500) comprises one or more magnets which are arranged in the mounting holder (300) around the working reference axis (900) such that a rotationally symmetrical magnetic field is formed around the working reference axis (900).

4. The mounting apparatus according to any one of claims 1 to 3, characterized by - the magnet system (500) consists of any one of the following structures: - a ring-shaped permanent magnet or a ring-shaped coil; - two parallel arranged bar magnets; - three bar magnets arranged along the sides of an equilateral triangle; - a plurality of short bar magnets with their magnetic field direction parallel to the working reference axis (900).

5. The mounting apparatus according to any one of claims 1 to 4, characterized by The magnet system (500) is additionally provided with an asymmetrical component (510) which generates a static magnetic field component in the mounting holder (300) which exerts a resultant force on the load distribution pad (200) in the mounted position, wherein a vector component of the resultant force points away from the mounting position in the direction of the extension of the push track (350).

6. The mounting apparatus of claim 5, wherein, The asymmetrical component (510) is realized by a magnet which supplements the magnet system (500).

7. The mounting apparatus of claim 5, wherein, The asymmetrical component (510) is realized by an asymmetrical arrangement of the magnets which form the magnet system (500).

8. The mounting apparatus according to any one of claims 1 to 7, characterized by In the mounting holder (300) a mechanical centring device (380) is provided which centres the load distribution pad (200) in the mounted position symmetrically with respect to the work reference axis (900).

9. The mounting apparatus according to any one of claims 1 to 8, characterized by In the mounting holder (300) a mechanical stop (370) is provided which limits the movement of the load distribution pad (200) along the push track (350) in the mounting holder (300).

10. A method of installing a load distribution washer (200) using the installation apparatus of any one of claims 1 to 9 by means of a fastener (210), characterized in that, The following steps are included: A mounting device (100) is provided, the magazine (400) of which is equipped with a load distribution pad reserve (410); At least one fastener (210) is provided by means of a second feed device (120); The mounting device (100) is positioned at the target position; The vertical movement of the pressure lever (145) is converted, on the one hand, into the horizontal movement of the feed blade (340), and, on the other hand, into the lowering movement of the drive shaft (155) along the work reference axis (900) which is driven in rotation by the drive unit (150); A fastener (210) is centred in the installation guide (320) on the work reference axis (900); By means of the horizontal movement of the feed blade (340), the individual load distribution pad (200) is pushed from the magazine (400) along the horizontal push track (350) through the passage (355) into the mounting holder (300), and there is held by the magnet system (500) on the contact surface (330), where the load distribution pad (200) is held centred around the work reference axis (900) without further mechanical securing, so that the work reference axis (900) is aligned with the through-hole (220) of the load distribution pad (200); The fastener (210) which is guided and driven by the drive shaft (155) can pass through the through-hole (220); By means of the lowering movement, the head of the fastener (210) is caught on the through-hole (220); The load distribution pad (200) is released from the contact surface (330) against the magnetic force; The fastener (210) is fixed to the work surface together with the load distribution pad (200) until the installation process is complete; The operating element (140) is reset vertically upwards. The following steps are included:

11. A method of installing a load distribution washer (200) using the installation apparatus of any one of claims 1 to 9 by means of a fastener (210), characterized in that, A mounting device (100) is provided, the magazine (400) of which is equipped with a load distribution pad reserve (410), and in the mounting position of the mounting holder (300) a single load distribution pad is provided; At least one fastener (210) is provided by means of a second feed device (120); The mounting device (100) is positioned at the target position; The vertical movement of the pressure lever (145) is converted, on the one hand, into the horizontal movement of the feed blade (340), and, on the other hand, into the lowering movement of the drive shaft (155) along the work reference axis (900) which is driven in rotation by the drive unit (150); A fastener (210) is centred in the installation guide (320) on the work reference axis (900); By means of the horizontal movement of the feed blade (340), the individual load distribution pad (200) is pushed from the magazine (400) along the horizontal push track (350) through the passage (355) into the mounting holder (300), and there is held by the magnet system (500) on the contact surface (330), where the load distribution pad (200) is held centred around the work reference axis (900) without further mechanical securing, so that the work reference axis (900) is aligned with the through-hole (220) of the load distribution pad (200); The fastener (210) which is guided and driven by the drive shaft (155) can pass through the through-hole (220); By means of the lowering movement, the head of the fastener (210) is caught on the through-hole (220); The load distribution pad (200) is released from the contact surface (330) against the magnetic force; The fastener (210) is fixed to the work surface together with the load distribution pad (200) until the installation process is complete; The operating element (140) is reset vertically upwards. Positioning the installation device (100) at the target location; Pressing the operating element (140) translates the vertical movement of the pressure rod (145) into a lowering movement of the drive shaft (155) along the work reference axis (900) driven by the drive unit (150) and centers a fastener (210) in the installation guide (320) on the work reference axis (900); Subsequently, the fastener (210) guided and driven by the drive shaft (155) can be passed through the through-hole (220); By the lowering movement, the head of the fastener (210) is caught on the through-hole (220); The load distribution washer (200) is released from the abutment surface (330) against the magnetic force; The fastener (210) is fixed to the work surface together with the load distribution washer (200) until the installation process is complete; The operating element (140) is reset vertically upwards; A horizontal movement is generated for the feed blade (340); A single load distribution washer (200) is pushed from the magazine (400) along the horizontal push track (350) through the passage (355) into the installation holder (300), where it is held on the abutment surface (330) by the magnet system (500), where it is held centered around the work reference axis (900) without further mechanical securing means, so that the work reference axis (900) is aligned with the through-hole (220) of the load distribution washer (200).

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