Mounting equipment for photovoltaic systems

Abstract

Mounting device (1) for mounting attachments and in particular photovoltaic systems on roofs and especially on flat roofs, comprising a mounting plate (2) which extends in a longitudinal direction (L) and a lateral direction (B) perpendicular thereto, wherein this mounting plate has a plurality of fastening openings (22) through which fastening means for attaching the mounting plate (2) to a support can be guided and with a mounting bolt (8) attached to the mounting plate (2), which extends in a direction perpendicular to the longitudinal direction and the lateral direction (B), wherein the mounting bolt is guided through a bolt opening (6) arranged in the mounting plate (2), characterized in that the mounting bolt is releasably secured to the mounting plate with a locking means and in particular with a nut.

Description

[0001] The present invention relates to a mounting device for mounting attachments on roofs and in particular on flat roofs.

[0002] It is known from the prior art that various installations can be mounted on flat roofs, such as photovoltaic systems, solar thermal systems, air conditioning units, lighting, and the like. The present invention is described in particular with reference to photovoltaic systems; however, it should be noted that it is also suitable for other types of installations.

[0003] German patent DE 20 2009 001 278 U1 discloses a mounting base for solar installations mounted on flat roofs. This mounting base comprises a mounting plate and a mounting pin or bolt welded to this mounting plate. While this device has proven reliable, it offers limited flexibility. In particular, it should be noted that equipping the base with mounting pins of varying lengths would be advantageous, depending on the different photovoltaic (or other) installations to be mounted.

[0004] Furthermore, it has been shown that the mounting pin is the element of the mounting base that is subject to the greatest mechanical stress. Therefore, if the mounting pin is damaged, the entire mounting base must be replaced.

[0005] Based on this prior art, the present invention therefore aims to provide an assembly device that offers greater variability compared to the prior art. In addition, a more cost-effective unit should also be provided.

[0006] This is achieved according to the invention by an assembly device according to claim 1. Advantageous embodiments and further developments are the subject of the dependent claims.

[0007] An assembly device according to the invention for mounting attachments and, in particular, photovoltaic systems on roofs, and especially on flat roofs, comprises a mounting plate which extends in a longitudinal direction and a lateral direction perpendicular thereto, wherein this mounting plate has a plurality of fastening openings through which fastening means for attaching the mounting plate to a support can be guided. In particular, these fastening means are screws or bolts.

[0008] Furthermore, the mounting device comprises a mounting bolt or pin attached to the mounting plate, which extends in a direction that is substantially, and particularly preferably, exactly perpendicular to both the longitudinal and transverse directions. "Substantially perpendicular" is understood to mean a direction of extension that forms an angle of less than 20°, preferably less than 15°, preferably less than 10°, and particularly preferably less than 5° and preferably less than 3° with a exactly perpendicular direction.

[0009] The mounting bolt is guided through a bolt opening located in the mounting plate.

[0010] According to the invention, the mounting bolt (which can also be referred to as a mounting pin) is detachably secured and / or fastened to the mounting plate with a locking device and in particular with a screw nut.

[0011] Therefore, the invention proposes that the mounting bolt is no longer permanently welded to the mounting plate, but rather detachably arranged. This makes it possible to equip existing mounting plates with different mounting bolts during manufacturing. Furthermore, if a mounting bolt is damaged, it can be replaced with a new one.

[0012] The applicant has surprisingly determined that welding the mounting bolt is not necessary to achieve sufficient stability. In particular, sufficient stability can also be achieved by using a bolted connection.

[0013] Preferably, the flat roof on which the mounting device is to be installed has a slope of at least 2°, preferably at least 3°. Particularly preferably, this slope is at most 15°, more preferably at most 12°, and most preferably at most 10°. The applicant has determined that for flat roofs with such slopes, the mounting device provides sufficient stability to hold the respective system components.

[0014] In another preferred embodiment, the mounting openings are flush with at least one surface of the mounting plate. This means that, in particular, no edges protrude beyond the surface of the mounting plate. Most preferably, the mounting openings are flush with both surfaces of the mounting plate. In this way, the mounting plate can be more easily attached to the support.

[0015] This support could be, for example, an insulating element or an insulating profile.

[0016] In another preferred embodiment, exactly one such mounting bolt is provided.

[0017] The mounting bolt is particularly preferably arranged in a central area of ​​the mounting plate with respect to both the longitudinal and lateral directions. A central area of ​​the mounting plate is understood to be an area located, with respect to the longitudinal and / or lateral direction, in a region or strip situated in the middle 30%, preferably in the middle 25%, preferably in the middle 20%, and particularly preferably in the middle 15% and particularly preferably in the middle 10% of the respective direction.

[0018] An edge area of ​​the mounting plate is understood to be an area that is located less than 20 cm, preferably less than 15 cm, preferably less than 10 cm, preferably less than 8 cm and preferably less than 5 cm from an edge or border of the mounting plate.

[0019] In a preferred embodiment, the mounting plate has a length greater than 100 mm, preferably greater than 200 mm, more preferably greater than 250 mm and particularly preferably greater than 270 mm.

[0020] The mounting plate is particularly preferably shorter than 500 mm, preferably shorter than 450 mm, preferably shorter than 400 mm, and most preferably shorter than 350 mm.

[0021] The mounting plate is particularly preferably wider than 100 mm, preferably wider than 200 mm, preferably wider than 250 mm, and particularly preferably wider than 270 mm. The mounting plate is particularly preferably wider than 500 mm, preferably wider than 450 mm, preferably wider than 400 mm, and particularly preferably wider than 350 mm.

[0022] Several considerations had to be taken into account when determining these dimensions. Firstly, the mounting plate should be compatible with a wide range of common flat roofs. Secondly, the dimensions should be chosen to ensure sufficient stability. Finally, the overall weight of the mounting system should be kept to a minimum.

[0023] Preferably, the mounting plate has a rectangular or square cross-section. It is possible that the corners of this mounting plate are rounded.

[0024] In a further preferred embodiment, the bolt opening is offset by a predetermined distance in a thickness direction of the mounting plate, which is perpendicular to the longitudinal and width directions, relative to a surface of the mounting plate, and in particular relative to the surface on which the bolt opening is arranged. This is especially a surface that faces upwards in a mounted state.

[0025] In this way, a screw or the aforementioned mounting bolt can be inserted into this bolt opening from below, without the screw head of this screw protruding beyond the corresponding underside of the mounting plate.

[0026] Preferably this distance is greater than 0.5 mm, preferably greater than 1.0 mm, preferably greater than 1.5 mm, preferably greater than 2.0 mm, preferably greater than 2.5 mm, preferably greater than 3.0 mm, preferably greater than 3.5 mm, preferably greater than 4.0 mm, preferably greater than 4.5 mm, preferably greater than 5.0 mm, preferably greater than 5.5 mm and particularly preferably greater than or equal to 6.0 mm.

[0027] In a further preferred embodiment, the distance is less than 20.0 mm, preferably less than 16.0 mm, preferably less than 12.0 mm, and particularly preferably less than 10.0 mm, and particularly preferably less than 8.0 mm, and particularly preferably less than 7.0 mm.

[0028] These spacing limits have proven particularly advantageous for integrating a wide variety of screw heads and / or different mounting bolts, while still achieving sufficient mechanical stability.

[0029] Particular attention is paid to the fact that the mounting plate can be fitted with mounting bolts of different lengths, while at the same time ensuring sufficient stability.

[0030] In another preferred embodiment, the bolt opening has a cross-section that deviates from a circular one. This makes it possible to guide a bolt through the bolt opening which also has a non-circular outer cross-section, thus preventing the mounting bolt from rotating relative to the bolt opening, which particularly simplifies assembly.

[0031] Preferably, the bolt opening has a square or rectangular cross-section.

[0032] In a further advantageous embodiment, the bolt opening is arranged in a dome-shaped section of the mounting plate. A screw head of the bolt can particularly preferably be arranged in this dome-shaped section. This dome-shaped section is particularly preferably manufactured by a forming process on the mounting plate, for example, using a die tool.

[0033] The bolt opening is particularly preferably arranged in a plane that runs parallel to a surface of the mounting plate. In this way, the cross-section of the bolt plane also preferably extends in this plane, which runs parallel to the surface of the mounting plate.

[0034] In another preferred embodiment, the dome-shaped section has a cross-section that is larger than 2 mm, preferably larger than 3 mm, preferably larger than 4 mm and preferably larger than 5 mm.

[0035] The dome-shaped section particularly preferably has a cross-section that is smaller than 50 mm, preferably smaller than 40 mm, smaller than 30 mm, preferably smaller than 25 mm, preferably smaller than 20 mm and particularly preferably smaller than 15 mm.

[0036] In another preferred embodiment, the mounting bolt has an external thread at least partially along a longitudinal direction. As mentioned above, a nut can be screwed onto this external thread. It is also possible to screw another nut onto this external thread, particularly for attaching the mounting device and especially a photovoltaic system.

[0037] In a further preferred embodiment, the mounting bolt has a cross-section that deviates from a circular cross-section in at least one section. In particular, this is an outer cross-section that is adapted to an inner cross-section of the aforementioned bolt opening in order to secure the mounting bolt to the mounting plate in a rotationally fixed manner. This cross-section, which deviates from the circular cross-section, is particularly preferably located in a region or near a head of this mounting bolt.

[0038] In a further advantageous embodiment, the mounting bolt is secured and, in particular, fastened to the mounting plate by means of a nut. It is especially preferred that at least one washer is arranged between the nut and the mounting plate, and particularly between the nut and the top surface of the mounting plate.

[0039] Preferably, at least two washers, and particularly preferably exactly two washers, are arranged between the nut and the mounting plate, and especially between the top of the mounting plate. Using two washers increases stability. Furthermore, it is possible to use standard washers for assembly. These washers are particularly preferably arranged directly adjacent to one another.

[0040] Particularly preferably, the head of the mounting bolt is located directly against an underside of the mounting plate and, in particular, directly against the dome-shaped section.

[0041] In a preferred embodiment, the mounting bolt is in contact exclusively with the dome-shaped section of the mounting plate.

[0042] The mounting bolt and / or the dome-shaped section is particularly preferably arranged between two mounting openings.

[0043] Preferably, two mounting openings are arranged in pairs such that the mounting bolt is located between them. Particularly preferably, the mounting bolt is located on a straight line and, in particular, centrally between said mounting openings.

[0044] The mounting plate preferably has at least four, preferably at least six, and preferably at least eight mounting openings. These mounting openings are particularly preferably arranged along a rectangular line. This facilitates the manufacture of the mounting plate and also its assembly on the aforementioned support.

[0045] In a further preferred embodiment, the mounting plate has a thickness in a direction perpendicular to the longitudinal and lateral directions that is greater than 1 mm, preferably greater than 1.5 mm, particularly preferably greater than 2.0 mm and particularly preferably greater than 2.5 mm.

[0046] In a further advantageous embodiment, the mounting plate has a thickness in a direction perpendicular to the longitudinal and lateral directions that is less than 20 mm, preferably less than 15 mm, preferably less than 10 mm, preferably less than 8 mm and particularly preferably less than 6 mm, and particularly preferably less than 5 mm and particularly preferably less than 4 mm.

[0047] These thicknesses have proven particularly advantageous in order to reduce manufacturing costs on the one hand and achieve the desired stability on the other.

[0048] Preferably, the thickness of the mounting plate is essentially uniform and / or constant, and preferably uniform and / or constant outside the dome-shaped section.

[0049] The mounting plate preferably has a thickness greater than 0.5 mm, preferably greater than 1.0 mm, and particularly preferably greater than 1.5 mm and particularly preferably greater than 2.0 mm, in a region of the dome-shaped section and / or in the vicinity of the bolt opening. The mounting plate preferably has a thickness less than 15 mm, preferably less than 12 mm, preferably less than 10 mm, preferably less than 8 mm, preferably less than 6 mm, preferably less than 5 mm, preferably less than 4 mm, and particularly preferably less than 3.0 mm, in a region of the dome-shaped section and / or in the vicinity of the bolt opening.

[0050] These thicknesses have proven suitable in extensive tests with different mounting bolts to achieve a stable securing of the mounting bolt.

[0051] In this way, a uniformly manufactured mounting plate can be used for optional fitting with different mounting bolts.

[0052] In another advantageous embodiment, the mounting plate is made of a metal, wherein the metal is in particular iron and in particular steel.

[0053] The mounting bolt is preferably made of steel, and in particular of stainless steel.

[0054] Particularly preferred is at least one surface and particularly preferred are several surfaces of the mounting plate and particularly preferred are all surfaces of the mounting plate being galvanized.

[0055] The mounting plate is preferably made of a material that contains additional components besides iron (Fe). These components are particularly preferably selected from a group comprising carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and titanium (Ti). The material can contain at least one of these additional components, preferably several, and most preferably all of them.

[0056] In a particularly preferred embodiment, the mass fraction of carbon in the material of the mounting plate is between 0.1% and 0.3%, preferably between 0.12% and 0.28%, preferably between 0.14% and 0.22% and particularly preferably between 0.16% and 0.20%.

[0057] The mass fraction of silicon in the material of the mounting plate is particularly preferably between 0.20% and 0.80%, preferably between 0.30% and 0.70%, and particularly preferably between 0.40% and 0.60%.

[0058] Particularly preferably, the mass fraction of manganese in the mounting plate material is between 0.5% and 2.0%, more preferably between 0.7% and 1.8%, more preferably between 0.9% and 1.5%, and more preferably between 1.1% and 1.3%.

[0059] Particularly preferably, the mass fraction of phosphorus in the mounting plate material is between 0.05% and 0.18%, more preferably between 0.08% and 0.16%, and most preferably between 0.10% and 0.14%.

[0060] Particularly preferably, the mass fraction of sulfur in the mounting plate material is between 0.02% and 0.07%, more preferably between 0.03% and 0.06%, more preferably between 0.04% and 0.05%.

[0061] In another preferred embodiment, the mass fraction of titanium in the mounting plate material is between 0.1% and 0.5%, preferably between 0.2% and 0.4%, and particularly preferably between 0.25% and 0.35%.

[0062] Preferably, the mounting plate has a coating. Preferably, this is a galvanized coating.

[0063] In another preferred embodiment, the mounting bolt is a steel bolt made of steel 1.4301, in particular of group A2.

[0064] In a further preferred embodiment, at least one of the aforementioned washers, and preferably both washers, are made of this material, in particular steel. Alternatively, and preferably, the two washers are of the same design.

[0065] In another preferred embodiment, the mounting plate has a yield strength higher than 200 N / mm². 2 preferably higher than 220 N / mm 2 and especially preferably higher than 240 N / mm 2 and especially preferably greater than or equal to 250 N / mm 2 .

[0066] The minimum yield strength is a material property that indicates the minimum tensile stress value up to which a material can be elastically deformed and then undergoes permanent plastic deformation. The minimum yield strength is used as a safety factor in design to prevent irreversible deformation of components and structures. For users of materials such as screws or, in this case, the mounting plate, the minimum yield strength serves as a limit that must not be exceeded during the design process. This minimum yield strength also applies specifically to the domed section.

[0067] In a further preferred embodiment, the mounting bolt has a tapered end section at one end facing away from the mounting plate. This end section can form an insertion ramp, over which, for example, a longitudinal groove of an element to be mounted can be arranged.

[0068] In a further preferred embodiment, the mounting bolt has a length greater than 30 mm, preferably greater than 40 mm, preferably greater than 50 mm and particularly preferably greater than 60 mm.

[0069] In a further preferred embodiment, the mounting bolt has a length that is less than 180 mm, preferably less than 160 mm, preferably less than 150 mm, preferably less than 140 mm, preferably less than 130 mm, particularly preferably less than 120 mm, and particularly preferably less than 110 mm and particularly preferably less than 100 mm.

[0070] The present invention further relates to a photovoltaic system comprising at least one photovoltaic module. According to the invention, the photovoltaic module is mounted or mountable on a roof, and in particular a flat roof, by means of at least one mounting device of the type described above.

[0071] The present invention is further directed to a building with a flat roof and a photovoltaic system of the type described above mounted on this flat roof.

[0072] Further advantages and embodiments can be seen from the attached drawings:

[0073] It shows: Fig. 1 a schematic representation of a mounting device according to the invention on a building structure; Fig. 2 a top view of the assembly device according to the invention; Fig. 3 a perspective view of the assembly equipment Fig. 2; Fig. 4 a side view of the assembly device according to the invention; Fig. 5 a detailed representation of the assembly device according to the invention; Fig. 6 a further top view of an assembly device according to the invention; Fig. 7 a perspective view of the assembly device according to the invention; and Fig. 8 a sectional view of a mounting bolt in a bolt hole.

[0074] Fig. Figure 1 shows a representation of a mounting device according to the invention, which is attached to a building structure and to which, in turn, a system, for example, a photovoltaic system (only partially shown – the collectors are not shown), is arranged. This photovoltaic system has two main supports for carrying a (not shown) solar module and a cross brace 54, which is attached to the mounting device 1. Reference numeral 51 designates an insulating body to which the mounting device 1 is attached, in particular screwed.

[0075] Fig. Figure 2 shows a top view of a mounting device 1 according to the invention. This device has a mounting plate 2. A total of eight mounting openings 22 are arranged in the mounting plate 2. A mounting bolt 8 is provided centrally, which projects out of the plane of the figure. This mounting bolt 8 is arranged on a dome-shaped section, designated 12 in its entirety, which also projects out of the plane of the figure.

[0076] Furthermore, advantageous length and width dimensions of the mounting plate 2 are specified.

[0077] Fig. Figure 3 shows a perspective view of the in Fig. The assembly device shown in Figure 2 again features the mounting bolt 8, which, as mentioned above, is located on the dome-shaped section designated 12. This dome-shaped section has a conical portion.

[0078] Reference numeral 18 designates a nut used to fasten the mounting bolt 8 to the mounting plate 2. Reference numeral 16 designates a washer, in particular a flat washer. Two flat washers 16 arranged one above the other are particularly preferred, which further increases stability.

[0079] Fig. Figure 4 shows a sectional view of the assembly device 1 according to the invention. The screw nut 18 is again visible, as are the two washers 16 which are located between the screw nut 18 and the [unclear text]. Fig. 4 are arranged on the surface of the mounting plate 2 pointing upwards or in the direction of the mounting bolt 8.

[0080] Fig. Figure 5 shows a representation illustrating the dome-shaped section 12. This has a conical section 12a and a section 12b running parallel to the mounting plate, in which the bolt opening is also arranged, through which the mounting bolt 8 extends.

[0081] It can be seen that the inclined section 12a forms an angle of 35° with respect to the plane of the mounting plate. Preferably, this angle lies between 15° and 55°, more preferably between 25° and 45°, and most preferably between 30° and 40°.

[0082] The reference symbol d denotes the thickness of mounting plate 2. The reference symbols R6 and R3 each denote radii of curvature, which characterize the transitions between the individual areas of the dome-shaped section. The reference symbol h12 denotes the height of the dome-shaped section relative to the upper surface of mounting plate 2.

[0083] Fig. Figure 6 shows another view of the mounting plate 2. The bolt opening 6 is also shown here, which clearly has a square cross-section. This allows a mounting bolt with a similarly adapted, for example, square, outer cross-section to be inserted into this area, thus preventing rotation.

[0084] The lengths and widths of this bolt opening 6 are further designated by reference numerals l6 and b6. These lengths and widths are preferably between 5 mm and 20 mm, more preferably between 7 mm and 15 mm, more preferably between 8 mm and 13 mm, and most preferably between 10 mm and 11 mm. These dimensions have proven advantageous in achieving both sufficient stability and sufficient retention of the mounting bolt.

[0085] The fastening openings 22 preferably have a cross-section that is between 10 mm and 25 mm, preferably between 12 mm and 20 mm and particularly preferably between 15 mm and 16 mm.

[0086] The individual mounting openings 22 are further specified at a predetermined distance d22 from the edges of the mounting plate. Preferably, this distance is between 10 mm and 50 mm, more preferably between 20 mm and 40 mm, and more preferably between 25 mm and 32 mm, and most preferably between 27 mm and 30 mm.

[0087] Fig. Figure 7 shows a perspective view of the mounting plate 2. Here again, the dome-like elevation or cupola-like section 12 with its two sections 12a and 12b is visible. It can also be seen that the mounting holes are burr-free and flush with the upper surface O1 of the mounting plate 2. These mounting holes are also flush with the underside of the mounting plate 2.

[0088] Fig. Figure 8 shows a sectional view of the mounting bolt 8, which is arranged in the bolt opening. It can be seen in particular that the mounting bolt has a square cross-section in the area where it passes through the bolt opening, so that the mounting bolt cannot be rotated with respect to its longitudinal direction relative to the bolt opening and thus also not relative to the mounting plate 2. This facilitates the tightening of a nut.

[0089] The screw nut 18 and the two washers 16, which are arranged directly on top of each other, can still be seen.

[0090] A head 8a of the mounting bolt rests from below against the dome-shaped section 12 and in particular against the section 12b of this dome-shaped section which runs parallel to the mounting plate.

[0091] The reference numeral h1 denotes a height between the underside of the dome-shaped section and the top of the upper washer. This height is preferably between 4 mm and 14 mm, more preferably between 6 mm and 12 mm, more preferably between 6 mm and 10 mm, and more preferably between 7 mm and 9 mm, and more preferably between 7.5 mm and 8.5 mm.

[0092] The reference numeral h2 denotes a height between the underside of the dome-shaped section and the end of the square shoulder. This height h2 is preferably between 3.5 mm and 12 mm, more preferably between 4 mm and 10 mm, more preferably between 5 mm and 8 mm, and most preferably between 6 mm and 7 mm.

[0093] The washers 16 preferably have a larger inner cross-section than the bolt opening. Preferably, the washers are dimensioned such that they are rotatable relative to the mounting bolt. The nut 18 has a circumferential collar at the end that rests against the upper washer 16. This increases the contact area.

[0094] The applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided they are novel individually or in combination compared to the prior art. It is further noted that the individual figures also describe features which may be advantageous on their own. A person skilled in the art will immediately recognize that a particular feature described in a figure may be advantageous even without incorporating other features from that figure. Furthermore, a person skilled in the art will recognize that advantages may also arise from a combination of several features shown in individual or different figures. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2009 001 278 U1

[0003]

Claims

[1] Mounting device (1) for mounting attachments and in particular photovoltaic systems on roofs and especially on flat roofs, comprising a mounting plate (2) which extends in a longitudinal direction (L) and a lateral direction (B) perpendicular thereto, wherein this mounting plate has a plurality of fastening openings (22) through which fastening means for attaching the mounting plate (2) to a support can be guided and with a mounting bolt (8) attached to the mounting plate (2) which extends in a direction perpendicular to the longitudinal direction and the lateral direction (B), wherein the mounting bolt is guided through a bolt opening (6) arranged in the mounting plate (2). characterized by that the mounting bolt is releasably secured to the mounting plate with a locking device and in particular with a nut. [2] Assembly device (1) according to claim 1, characterized by, that the mounting bolts are arranged in a central area of ​​the mounting plate with respect to the longitudinal direction (L) and the width direction (B), and that the fastening holes are arranged in an edge area of ​​the mounting plate. [3] Assembly device (1) according to at least one of the preceding claims, characterized by , that the bolt opening (6) is offset in a thickness direction of the mounting plate, which is perpendicular to the longitudinal direction (L) and perpendicular to the width direction (B), from a surface (O1) of the mounting plate by a predetermined distance (h12). [4] Assembly device according to the preceding claim characterized bythat the distance is greater than 0.5 mm, preferably greater than 1.0 mm, preferably greater than 1.5 mm and preferably greater than 2.0 mm, preferably greater than 2.5 mm, preferably greater than 3.0 mm, preferably greater than 3.5 mm, preferably greater than 4.0 mm, preferably greater than 4.5 mm, preferably greater than 5.0 mm, preferably greater than 5.5 mm and particularly preferably greater than or equal to 6.0 mm and / or the distance is less than 20.0 mm, preferably less than 16.0 mm, preferably less than 12.0 mm, and particularly preferably less than 10.0 mm and particularly preferably less than 8.0 mm and preferably less than 7.0 mm [5] Assembly device (1) according to the preceding claim, characterized by , that the bolt opening has a cross-section that deviates from a circular cross-section. [6] Assembly device (1) according to at least one of the preceding claims, characterized bythat the bolt opening (6) is arranged in a dome-shaped section (12) of the mounting plate (2), preferably the bolt opening (6) being arranged in a plane which runs parallel to a surface of the mounting plate (2). [7] Assembly device (1) according to at least one of the preceding claims, characterized by that the mounting bolt has an external thread at least in sections along its longitudinal direction and / or that the mounting bolt has a cross-section that deviates from a circular cross-section in at least one section. [8] Assembly device (1) according to at least one of the preceding claims, characterized by that the mounting bolt (8) is secured to the mounting plate (2) by means of a screw nut and preferably at least one washer and preferably two washers are arranged between the screw nut and the mounting plate. [9] Assembly device (1) according to at least one of the preceding claims, characterized by that the mounting bolt is positioned between two mounting holes. [10] Assembly device (1) according to at least one of the preceding claims, characterized by that the mounting plate (2) has a thickness in a direction perpendicular to the longitudinal direction (L) and the width direction (B) that is greater than 1 mm, preferably greater than 1.5 mm and particularly preferably greater than 2.0 mm, preferably greater than 2.5 mm and / or the mounting plate (2) has a thickness in a direction perpendicular to the longitudinal direction (L) and the width direction (B) that is less than 20 mm, preferably less than 15 mm, preferably less than 10 mm, preferably less than 8 mm and particularly preferably less than 6 mm and particularly preferably less than 5 mm and particularly preferably less than 4 mm. [11] Assembly device (1) according to at least one of the preceding claims, characterized by , that the mounting plate (1) is made of a metal and in particular of steel and / or the mounting bolt (8) is made of a steel and in particular of stainless steel and preferably at least one surface of the mounting plate is galvanized. [12] Assembly device (1) according to at least one of the preceding claims, characterized by that the mounting plate has a yield strength that is higher than 200 N / mm2, preferably higher than 220 N / mm2, and particularly preferably higher than 240 N / mm2, and particularly preferably greater than or equal to 250 N / mm2. [13] Assembly device (1) according to at least one of the preceding claims, characterized by , that the mounting bolt (8) has a conically tapered end section at one end facing away from the mounting plate. [14] Photovoltaic system with at least one photovoltaic module, characterized by , that the photovoltaic module is mounted on a roof and in particular on a flat roof by means of at least one mounting device (1) according to at least one of the preceding claims. [15] Buildings with a flat roof and a photovoltaic system mounted on that flat roof according to the preceding claim.

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