Kit for mounting solar modules

Abstract

The invention relates to a kit for mounting solar modules (100) on open spaces, flat roofs, and roof terraces, with a substructure (5) at least comprising rail-like mounting profiles (11) on which support means are arranged, with which the solar modules (100) are inclined. The invention is characterized in that the support means are a front mounting foot (20) and a rear mounting foot (40) of variable heights, which can be adjusted and fixed at a variable distance from one another along the longitudinal axis of the mounting profiles (11), and wherein the front mounting foot (20) has a lower height than the rear mounting foot (40), and both mounting feet (20, 40) each have a receptacle which together form an inclined support surface on which the solar modules (100) are supported and which has means into which fastening elements can be inserted, which clamp the solar modules (100) and secure them against wind suction forces.The invention makes it possible to create a grid on the installation surface, which could be a flat roof or a terrace, for example. This grid can be adapted to the various types of solar modules and aligned to optimize the absorption area according to the location, without the need for complex, custom-made substructures. While the front foot is provided at a fixed height, the kit according to the invention provides rear mounting feet at variable heights. This allows the specialist to optimize the tilt angle of the solar modules simply by replacing the rear mounting foot.

Description

The invention relates to a kit for mounting solar modules on open surfaces, flat roofs and roof terraces.PRIOR ARTSolar modules of photovoltaic systems convert the sunlight into electrical energy, usually in combination. Both open surfaces and roofs of buildings are used for this purpose. In inclined roofs, for example saddle roofs, the inclination of the roof specifies the orientation for the angle of incidence of sunlight. The position of the sky direction is also defined by the building position.In flat roofs, a substructure must be used with which the angle of inclination for the solar modules is also adjusted. Although it is possible to adapt to the desired direction of the headliner by means of the substructure, this is at the expense of space utilization if a horizontal rotation of the substructure relative to the available surface takes place on a rectangular roof surface.Solar modules are to be aligned on surfaces in such a way that they have a favourable angle of incidence for the sunlight. For this purpose, sub-structures are used which are usually designed only for a specific solar module type. Moreover, it should be ensured that the solar modules have a favourable angle of inclination. If no dynamic adjustment is used, but a static system is used, an optimum angle must be selected which takes into account the building position, its orientation and the sun position at the different seasons. As a result, the roof inclination to be formed by the substructure will always be different from building to building. The known static sub-structures for solar installation cannot react to this, but they must either be manufactured by a special structure or restrictions on the calculated optimal angles of inclination are accepted.DE 10 2010 024 660 A1 describes a mounting system for a solar module. The known system uses a substructure which is distributed on the placement surface in a grid-like manner. For this purpose, mounting profiles are used, which in turn are used as supports for supports of the solar modules. In this case, the rear-side support of the solar module is raised with respect to its front fastening, so that an angle of inclination is predefined. The raised support is formed by a wind cover which is manufactured individually and therefore expensively.The known mounting systems are hardly suitable for presetting an optimized alignment with simultaneous stability for the solar modules because of lack of flexibility and lack of adjustment capability.TASKThe object of the present invention is to provide a kit for mounting solar modules which enables simple and rational mounting of solar modules for a photovoltaic system, the absorption surface of which can be aligned in an optimized manner. This object is achieved by a kit according to the proposed claim 1.Further advantageous details and embodiments of the invention and refinements and variants can be seen from the dependent claims and the drawing explained below.ADVANTAGES OF THE INVENTIONAccording to the invention, a kit for mounting solar modules on open surfaces, flat roofs and roof terraces is proposed, having a substructure, at least comprising rail-like mounting profiles, on which support means are arranged, with which the solar modules are given an inclined position.The invention is distinguished in that the supporting means are a front mounting foot and a rear mounting foot with variable structural heights, which can be adjusted and fixed at a variable distance from one another in the longitudinal axis of the mounting profiles, and wherein the front mounting foot has a lower structural height than the rear mounting foot and the two mounting feet each have a receptacle, which together form an inclined bearing surface on which the solar modules are supported and which have means in which fastening elements can be used, which clamp the solar modules and secure them against wind-induced forces.With the invention it is possible to form a grid on the placement surface, which can be, for example, a flat roof or a terrace. This grid can be adapted to the types of the most varied solar modules and can be aligned with optimizing the absorption surface according to the location without the substructure having to be individually manufactured in a complicated manner. While the front foot is provided with a height, the kit according to the invention provides rear mounting feet with variable heights. This allows the skilled person to optimize the angle of inclination of the solar modules solely by replacing the rear mounting foot.It has been found to be particularly advantageous if the rear mounting foot is designed in a modular manner in at least two parts and has at least one lower part and one upper part which have means for mutual adaptation. In a two-part embodiment, for example, the same lower part can always be used, while the mounting foot is completed by different upper parts. The upper parts can both vary the overall height and have individual designs of the supports. The means for connecting the two parts are designed such that here too no complicated machining is required.The invention advantageously provides that the means for mutually adapting the lower part with the upper part of the rear mounting foot are T-shaped receiving channels on one part and adaptation heads on the other part. As a result, both parts can be pushed into one another laterally. The adaptation heads engage behind the vertices of the receiving channels and form a positive connection.The proposed mounting profile is a double chamber profile, the two hollow chamber profiles of which are separated and spaced apart from one another by a screw channel, the channel walls of which have a toothing which extends in the longitudinal axis of the mounting profile. As in the case of the internally toothed hollow chambers of the mounting feet, the internally toothed screw channel also enables a pre-drilled screwing-in of the mounting screw, which does not have to cut into solid material.The invention advantageously provides that the receptacles of the mounting feet are tubular bodies and have hollow chambers which are partially closed and partially opened, wherein at least one hollow chamber is opened upwards through a slot and into which a fastening element can be introduced, which engages behind the respective chamber apex or projections or webs formed on the chamber apex. A corresponding connector can be pushed laterally into the receptacle. While the foot part of the connector located in the hollow chamber produces a positive connection there, the solar modules seated on the receptacle are clamped and secured against wind-deflecting forces.The mounting feet themselves, like their receptacles, are designed as tubular profiles with hollow chambers and are penetrated by grid-shaped webs and ribs. This ensures a significant weight reduction with simultaneous static stability due to the enormous saving in material.The invention advantageously provides a fastening element for fixing the solar modules, which fastening element comprises a dowel-like expansion foot and a clamping part, which can be adjusted relative to one another in a height-variable manner by means of a set screw. While the expansion foot is positioned in the hollow chamber of the respective mounting foot receptacle and produces a positive connection there, the clamping part engages over the edge region of a solar module to be fixed and presses the latter against the receptacle when the adjusting screw is screwed in.The invention provides that the expansion foot consists of an almost U-shaped bow on which two downwardly directed hooks parallel to one another are formed and an internal thread is arranged in the crown of the bow, into which the adjusting screw is screwed. The screw head is supported on the clamping part and adjusts the distance of the clamping part from the expansion foot.Further advantages and advantageous embodiments of the invention can be derived from the following description, the drawing and the claims. There are various possibilities for advantageously configuring and further developing the teaching of the present invention. For this purpose, reference is made on the one hand to the subordinate claims and on the other hand to the following explanation of an exemplary embodiment of the invention on the basis of the drawing.EMBODIMENTIn conjunction with the explanation of the preferred exemplary embodiment of the invention on the basis of the drawing, preferred embodiments and developments of the teaching are also generally explained.In the drawing, the following are shown: FIG. 1 shows a perspective illustration of the kit 1 according to the invention for a south alignment, FIG. 2 shows a perspective illustration of the kit 2 according to the invention for east-west alignment, FIG. 3 shows a further perspective illustration of the kit 1 according to the invention for a south alignment, FIG. 4 shows a front view of the kit 1 according to FIG. 3 FIG. 5 is a top view of the kit 1 according to FIG. 3 FIG. 6 shows a side view of the kit 1 according to FIG. 3 FIG. 7 shows a further perspective illustration of the kit 2 according to the invention for east-west alignment, FIG. 8 shows a front view of the kit 2 according to FIG. 7 FIG. 9 is a top view of the kit 2 according to FIG. 7 FIG. 10 shows a side view of the kit 2 according to FIG. 7 FIG. 11 is a perspective view of the front mounting foot 20, FIG. 12 is a side view of the front mounting foot 20 according to FIG. 11, FIG. 12 ashows an enlarged view of the hollow chamber 25 from FIG. 12 FIG. 13 is an end view of the front mounting foot 20 according to FIG. 11, FIG. 14 is a top view of the front mounting foot 20 according to FIG. 11, FIG. 15 shows the detail marked "A" in FIG. 12 in an enlarged view, FIG. 16 shows a perspective illustration of the two-part rear mounting foot 40 in the assembly, FIG. 17 is a side view of the rear mounting foot 40 according to FIG. 16, FIG. 18 is an end view of the rear mounting foot 40 of FIG. 16, FIG. 19 is a top view of the rear mounting foot 40 according to FIG. 16, FIG. 20 is a perspective view of the lower part 41 of the rear mounting foot 40, FIG. 21 is a side view of the lower part 41 of the rear mounting foot 40 according to FIG. 20 , FIG. 22 is an end view of the base 41 of the rear mounting foot 40 according to FIG. 20, FIG. 23 is a top view of the base 41 of the rear mounting foot 40 according to FIG. 20, FIG. 24 shows a first perspective illustration of the upper part 42 of the rear mounting foot 40, FIG. 25 shows a second perspective illustration of the upper part 42 of the rear mounting foot 40, rotated with respect to FIG. 24, FIG. 26 is a rear view of the upper portion 42 of the rear mounting foot 40 of FIG. 24 FIG. 27 is a side view of the upper part 42 of the rear mounting foot 40 according to FIG. 24 FIG. 28 is a front view of the upper part 42 of the rear mounting foot 40 according to FIG. 24 FIG. 29 is a top view of the upper part 42 of the rear mounting foot 40 according to FIG. 24 FIG. 30 shows the mounting profile 11 in a front view, FIG. 31 shows the detail of the screw channel 15 marked A in FIG. 30, FIG. 32 shows a perspective illustration of a short piece of the mounting profile 11, FIG. 33 shows a perspective illustration of the profile connector 60, FIG. 34 is an end view of the profile connector 60 according to FIG. 33 , FIG. 35 shows a side view of the profile connector 60 according to FIG. 33, FIG. 36 shows a plan view of the profile connector 60 according to FIG. 33, FIG. 37 shows a perspective illustration of the ballast profile 50, FIG. 38 is a side view of the ballast profile 50, FIG. 39 is an end view of the ballast profile 50, FIG. 40 shows the mounting screw 70 in a perspective illustration, FIG. 41 shows the mounting screw 70 rotated horizontally by 180°, FIG. 42 is a side view of the mounting screw 70, FIG. 43 is a plan view of the mounting screw 70, FIG. 44 shows the detail marked "A" in FIG. 42 in an enlarged view, FIG. 45 shows the rear wind shield 91, FIG. 46 shows the lateral wind shield 90, FIG. 47 the fastening element 80 (module clamp) for the central region in a front view, FIG. 48 is a side view of the fastening element 80 according to FIG. 47, FIG. 49 is a plan view of the fastening element 80 according to FIG. 47, FIG. 50 is a perspective view of the fastening element 80 according to FIG. 47, FIG. 51 shows the fastening element 81 (end clamp) for the termination region in a front view, FIG. 52 is a side view of the fastening element 81 according to FIG. 51 , FIG. 53 is a plan view of the fastening element 81 according to FIG. 51 ; and FIG. 54 is a perspective view of the fastening element 81 according to FIG. 51.In FIGS. 1, 3, 4, 5 and 6, the kit 1 according to the invention for a south alignment is depicted and in FIGS. 2, 7, 8, 9 and 10 a kit 2 for the east-west alignment is depicted. The kit 1 and 2 comprises a substructure 5, which in each case consists of at least two mounting profiles 11 aligned parallel to one another and in each case two mounting feet 20 and 40 arranged on a mounting profile. The kit 1, 2 is completed by a profile connector 60 used for the longitudinal joint of two mounting profiles 11 and by a ballast profile 50 (better shown in FIGS. 2 and 7 ) which, adapted to the grid produced for the desired solar surface, are provided in a corresponding quantity. The ballast profile 50 is used in pairs. Weighting bodies 55 are inserted between two ballast profiles 50 oriented parallel to one another, which in the composite counteract the wind suction forces due to their load. Further measures in this regard are a lateral wind shield 90 or a rear wind shield 91.To accommodate the solar modules 100 in an inclined orientation, the kit 1, 2 according to the invention comprises mounting feet 20, 40 of different heights, wherein a first front mounting foot 20 and a second rear mounting foot 40 are used. Both mounting feet 20, 40 have a receptacle 22 (FIG. 11 ), 142 (FIG. 16 ) for supporting the solar modules 100, wherein these receptacles 22, 142 correspond to one another in such a way that they offer the solar modules 100 an inclined supporting surface in that the first front mounting foot 20 has a smaller overall height than the second rear mounting foot 40. Both together define an angle of inclination of 15°.FIGS. 11 to 15 show the front mounting foot 20. The receptacle 22 is a tubular body, which is preferably produced by an extrusion process. This saves considerable dead weight. Nevertheless, sufficient stability is achieved, so that the sections involved in the weight absorption have sufficient inherent rigidity. The receptacle 22 has hollow chambers 23-29 which are partially closed and partially open. The chamber 25 which is open upwards by a slot 31 has the possibility of direct cable introduction through the slot, a closed chamber 23 serving to carry out longer cable paths. The axis 32 of the receptacle 22 is inclined with respect to the open or roof surface, so that the bearing surface 33 of the receptacle 22 running at right angles thereto specifies an inclined orientation of the solar module placed later. The inserted solar module strikes against the limiting strip 34, so that the latter cannot be displaced downward even when exposed to wind. In the assembly of the solar modules, a fastening element 80, 81 (FIGS. 47, 54), not shown here, contributes to the fixing of the elements.FIG. 12 ashows an enlargement of the central hollow chamber 25, which is opened upward through the slot 31. A nose 38 is formed on both sides of the slot 31 or on the chamber apex 37. When a fastening element 80, 81 (FIGS. 47-54) is now introduced, a dowel-like expansion foot of the fastening element is located inside the hollow chamber 25 and engages under the chamber apex 37 or the noses 38, while the clamping part of the fastening element fixing the solar modules is positioned outside or above the hollow chamber.The hollow chamber 29 has a substantially circular cross section, wherein the inner side has a toothing 35. This can be seen in FIG. 12 and the detail marked A in FIG. 12 according to FIG. 15. The toothing 35 passes through the hollow chamber 29 in the longitudinal direction and assists the cutting-in of a mounting screw 70 (FIG. 40 ), which as a result does not have to engage in the solid material. The mounting foot 20 is mechanically fastened to the mounting profile 11 (FIG. 32 ) by means of the bores 36 in the foot plate 21. The mounting profiles themselves can also be additionally anchored in the roof underground if the wind swing safety device is considered inadequate by means of the ballast profiles and the selected weighting bodies. In the case of a flat roof surface, the underlying surface can be a steel trapezoid sheet, wood material, concrete, pumice or porous concrete.The following FIGS. 16 to 29 show the rear mounting foot 40 which is constructed in two parts and consists of a lower part 41 and an upper part 42 which are connected to one another in a positive-locking manner. This is done by the lower part 41 carrying T-shaped adaptation heads 43 and the upper part 42 having corresponding receiving channels 44, in which the adaptation heads 43 can be moved linearly. Both parts are pushed into one another laterally, the adaptation heads 43 engaging behind the channel apex 45.The lower part 41 of the rear mounting foot 40 is depicted in FIGS. 20 to 23. A tubular body 47 of triangular cross-section rises on a foot plate 46. In order to keep the dead weight as low as possible, hollow chambers 92, 93, 94 and 95 pass through the mounting foot. The hollow chamber 95 has a substantially circular cross section, wherein the inner side has a toothing 96. The webs 98, 99 remaining during the formation of the hollow chambers and the rear wall 97 and the adaptation plate 101 reinforce the tubular body to a sufficient extent, so that the weight of the solar modules can be securely absorbed and without deformation of the profile occurring in the process. The adaptation plate 101 carries the adaptation heads 43 on the surface facing away from the hollow chambers. The web 111 arranged in the extension of the web 98 and the web 112 extending the rear wall 97 form enclosures for the upper part 42 to be mounted of the rear mounting foot 41. Approximately in the middle of the adaptation plate 101 there is arranged a bed 114 of semi-circular cross section which is open towards the outside and has an internal toothing 115. The mechanical fastening to the mounting profile takes place via the bores 116 in the foot plate 46 and the mounting bolts 70.FIGS. 24 to 29 show the upper part 42 of the rear mounting foot 40. The profile produced by extrusion is likewise a tubular body 120 having hollow chambers 125, 126, 127, 128, 129, 130 and 131 separated from one another by webs 121, 122, 123, 124. From a static point of view, this is similar to a lattice carrier. The adaptation plate 140 thereof connects the upper part 42 to the lower part 41 of the rear mounting foot 40. For this purpose, the receiving channels 44 are used, into which the adhesion heads 43 of the base 41 are inserted. This is done by pushing both parts laterally against each other. On the side facing away from the adaptation plate 140, the upper part 42 of the rear mounting foot 40 has a receptacle 142 with a central hollow chamber 130. This is open upwards by means of a slot 132. Because the slot width is smaller than the cross section of the hollow chamber 130, an undercut is formed. This allows a corresponding fastening element 80, 81 (FIGS. 50, 54 ) to engage behind the chamber apex 145 or the noses 146 formed in the chamber. The hollow chamber 128, which is circular cylindrical in cross section, has an internal toothing 180, like the hollow chambers 29 and 95. These toothings formed on the inner walls of the circular cylindrical hollow chambers extend in the longitudinal axis of the respective hollow chamber.Figures 30 to 32 show the mounting profile 11 which is bar stock cut to size according to the desired length. The mounting profile 11 forms the substructure 5 (FIG. 1 ) of the solar mounting. For this purpose, the mounting profiles 11 are laid on the mounting substrate in accordance with a selected grid. This can be a flat roof of a building or also another suitable installation surface. The grid is oriented according to the solar modules 100 (FIG. 1 ) used.The mounting profile 11 consists of two parallel rectangular hollow chamber profiles 12, 13 which are connected to one another by a base web 14. The two hollow chamber profiles 12, 13 are spaced apart from one another to form a screw channel 15 running parallel to the hollow chamber profiles. Formed into the upstanding channel walls 19 on both sides is a toothing 16. The channels 17, 18 of the hollow chamber profiles can be used as cable channels, for example for conducting lines that are not shown here.By means of the profile connector 60 depicted in FIGS. 33 to 36, the mounting profiles 11 arranged one behind the other are joined together at the end face and a longitudinal joint is thus formed. The profile connector 60 is a U-shaped rod with a horizontal web 61 and limbs 62, 63 projecting on both sides. Two holes 64, 65 are provided in the web 61 and pass through the web. A mounting screw 70 (FIG. 40 ) is passed through each of these two holes 64, 65. Both mounting screws 70 engage in the toothing 16 of the screw channel 15 (FIG. 32 ) of the mounting profiles 11 pushed underneath at the end face. The distances of the mounting profiles 11 laid parallel to one another are fixed by the transversely laid ballast profiles 50 (FIGS. 2, 37-39).A ballast profile 50 is shown in Figs. 37 to 39. The ballast profile 50 is an L-shaped rail with preferably two limbs 51, 52 oriented at right angles to one another. In one of the limbs 51, preferably two slots 53 are formed in each case at the free ends. The ballast profile 50 is always inserted in pairs and two profiles can be arranged parallel to one another in a distance-variable manner. The clear distance between two ballast profiles depends on the size of the load-bearing body used. This can be, for example, a sidewalk plate. In this case, the leg 51 with the elongated holes 53 rests on the mounting profile 11 and is screwed to the latter.The kit according to the invention uses a uniform mounting screw 70 for all attachments according to FIGS. 40-44. All components are prepared in such a way that the solar mounting can be mounted using only this type of screw and thus using only one tool. The mounting screw 70 consists of a screw head 72, a screw shank 74 and a load distribution disk 76. The load distribution disk 76 is formed directly under the screw head 72, i.e. is formed in one piece with the screw. On the underside facing away from the screw head, the load distribution disk 76 has a toothing 77 which forms a rotation-back prevention means. The screw head 72 is of cylindrical design and has an internal drive 73 for engaging a screwdriver bit. An external thread 75 is applied to the screw shaft 74.Both the profile connectors and the mounting feet and the ballast profiles or the respective wind shield in FIGS. 45 and 46 are fastened with this mounting screw 70.The rear windshield 91 is a rectangular plate having horizontal elongated holes at its four corner portions. For connecting the rear wind shield 91, the mounting screws 70 shown in FIGS. 40-44 are also used. These are also used for mounting the lateral wind shield 90. This is a nearly triangular plate having bores 152 at its corner zones.FIGS. 47 to 50 show a fastening element 80 for the central clamping of solar modules. The middle clamping in this sense refers to the mechanical fixing of solar modules, wherein the fastening element used is inserted between two solar modules and the two solar modules impose a clamping effect. The end clamp (FIGS. 51-54) denotes a fastening element which is inserted in the edge region and therefore clamps only a solar module. The fastening element 80 for the central clamping comprises a dowel-like expansion foot 155 and a clamping part 167. The spreading foot 155 consists of an almost U-shaped bow 156, on which two downwardly directed mutually parallel hooks 157 are formed. In the crown 158 of the bracket there is an internal thread which is not visible here and into which the screw 159 is screwed. The expansion foot 155 must previously already be inserted into the receptacle 22, 142 (FIG. 11 or 24 ). Then, the threaded shaft 160 of the screw 159 pushes between both hooks 157 and urges them apart. After the hooks 157 engage behind the receptacle, the bracket is seated and, upon a further screwing in of the screw 159, the clamping part 167 is forced downwards. In this case, the hooks 161 overlap the solar modules and the clamping force exerted leads to a secure mechanical fixing. The U-shaped hook carrier 162 of the clamping part 167 serves at the same time as a spacer body between two solar modules.FIGS. 51 to 54 show the fastening element 81 for the end trimming of solar modules in the edge region. With the exception of the clamping part 177, which differs from the clamping part 167 of the fastening element 80, all further components of this fastening element are identical to those of the fastening element 81 The functions of both fastening elements 80, 81 are also the same with the exception of the edge and / or middle fastening, so that no further explanations follow with respect to FIGS. 51 to 54.LIST OF REFERENCE CHARACTERS1 Construction kit for south alignment 2 Construction kit for east / west assembly 5 Substructure 11 Assembly profile 12 Hollow chamber profile of 11 13 Hollow chamber profile of 11 14 Floor web of 11 15 Screw channel of 11 16 Toothing in 15 17 Channel of 12 18 Channel of 13 19 Channel wall 20 Assembly foot (front) 21 Foot plate of 20 22 Receptacle of 20 23 Hollow chamber of 22 24 Hollow chamber of 22 25 Hollow chamber of 22 26 Hollow chamber of 22 27 Hollow chamber of 22 28 Hollow chamber of 22 29 Hollow chamber of 22 31 Slot of 25 32 Axis of 22 33 Contact surface of 22 34 Boundary strip of 22 35 Toothing in 29 36 Bores in 21 37 Chamber vertex of 25 38 Nose on 37 40 Assembly foot (rear) 41 Lower part of 40 42 Upper part of 40 43 Adaptation head 44 Receptacle grooves 45 Channel vertex 46 Foot plate of 41 47 tubular body of 40 50 ballast profile 51 legs of 50 52 legs of 50 53 elongated hole in 51 55 weighting body 60 profile connector 61 web of 60 62 legs of 60 63 legs of 60 64 hole in 61 65 hole in 61 70 mounting screw 72 screw head 73 inner drive 74 screw shaft 75 external thread on 74 76 load distribution disk 77 toothing on 76 80 fastening element for middle clamping 81 fastening element for end clamping 90 wind shield (lateral) 91 wind shield (rear side) 92 hollow chamber of 47 93 hollow chamber of 47 94 hollow chamber of 47 95 hollow chamber of 47 96 toothing in 95 97 rear wall of 47 98 rib of 47 99 rib of 47 100 solar module 101 adaptation plate of 47 111 web on 98 112 web on 97 114 bed in 101 115 internal toothing in 114 116 bores in 46 120 tubular body 42 121 web of 120 122 web of 120 123 web of 120 124 web of 120 125 hollow chamber of 120 126 hollow chamber of 120 127 hollow chamber of 120 128 hollow chamber of 120 129 hollow chamber of 120 130 hollow chamber of 120 131 hollow chamber of 120 132 slot in 130 140 adaptation plate of 120 142 reception of 40 / 42 145 chamber apex of 130 146 nose on 145 150 slot in 91 152 bore in 90 155 expansion foot of 80, 81 156 yoke of 155 157 hook of 155 158 yoke apex of 156 159 screw 160 threaded shank of 159 161 hook of 167 162 hook carrier of 167 167 clamping part of 80 177 clamping part of 81 180 toothing in 128References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2010 024 660 A1

[0005]

Claims

Kit (1, 2) for mounting solar modules (100) on open surfaces, flat roofs and roof terraces, having a substructure (5) at least comprising rail-like mounting profiles (11) on which are arranged supporting means with which the solar modules (100) are in an inclined position, characterised in that the supporting means are a front mounting foot (20) and a rear mounting foot (40) with variable structural heights which can be adjusted and fixed in a distance-variable manner relative to one another in the longitudinal axis of the mounting profiles (11) and wherein the front mounting foot (20) has a smaller structural height than the rear mounting foot (40) and both mounting feet (20, 40) each have a receptacle (22, 142) which together form an inclined bearing surface on which the solar modules (100) are supported and which have means in which fastening elements (80, 81) can be inserted, which clamp the solar modules (100) and secure them against wind suction forces.Kit (1, 2) according to claim 1, characterised in that the rear mounting foot (40) is constructed in a modular manner in at least two parts and has at least one lower part (41) and an upper part (42), which have means for mutual adaptation.Kit (1, 2) according to claim 2, characterised in that the means for mutually adapting the lower part (41) with the upper part (42) of the rear mounting foot (40) are T-shaped receiving channels (44) on one part and adaptation heads (43) on the other part.Kit (1, 2) according to claim 1, characterised in that the mounting profile (11) is a double chamber profile, the two hollow chamber profiles (12, 13) of which are separated and spaced apart from one another by a screw channel (15), the channel walls (19) of which have a toothing (16) which extend in the longitudinal axis of the mounting profile (11).Kit (1, 2) according to claim 1, characterised in that the receptacle (22, 142) is a tubular body and has hollow chambers (23-29), which are partially closed and partially open, wherein at least one hollow chamber (25, 130) is open upwards through a slot (31, 132) and into which a fastening element (80, 81) can be introduced, which engages behind the respective chamber apex (37, 145) or projections or webs (145) formed on the chamber apex.Kit (1, 2) according to Claims 1 to 5, characterized in that the mounting feet (20, 40) and the receptacles (42, 142) thereof are designed as tubular profiles with hollow chambers (23-29, 92-95, 125-131) and are penetrated by grid-shaped webs and ribs (98, 99, 121-124).Kit (1, 2) according to claim 6, characterised in that the hollow chambers (29, 95, 128) have a circular cylindrical cross-section and on the inner wall of which a toothing (35, 96, 180) extends running in the longitudinal axis of the hollow chamber.Kit (1, 2) according to claim 1, characterised in that the fastening element (80, 81) comprises a dowel-like expansion foot (155) and a clamping part (167), which can be adjusted relative to one another in a height-variable manner by means of a set screw (159).Kit (1, 2) according to claim 8, characterised in that the expansion foot (155) consists of an almost U-shaped bow (156) on which two hooks (157) parallel to one another and directed downwards are formed and an internal thread is arranged in the bow apex (158), into which the adjusting screw (159) is screwed.

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