WO2011054937A2

WO2011054937A2 - Apparatus for supporting solar modules

Info

Publication number: WO2011054937A2
Application number: PCT/EP2010/066938
Authority: WO
Inventors: Werner ILZHÖFER
Original assignee: Ilzhoefer Werner
Priority date: 2009-11-06
Filing date: 2010-11-05
Publication date: 2011-05-12
Also published as: DE112010004276A5; WO2011054937A3; DE202009015122U1

Abstract

The invention relates to an apparatus for supporting solar modules (10) on a flat roof, comprising at least two supporting devices (1, 1') which can be oriented relative to the opposite edges of a solar module (10). In order to simplify assembly, each of the supporting devices (1, 1') has a rectangular tube (2) on which at least one profiled supporting element (3, 11) that forms an angle and is made from a bent metal sheet is mounted.

Description

Device for supporting solar modules

The invention relates to a device for supporting solar modules on a flat roof according to the preamble of patent claim 1.

Such a device is known from DE 20 2008 000 528 Ul ^¬ known. In this case, support means are provided, which have an elongated profile. Several slope wedges are attached to each other behind this profile. The long stretch ^¬ te profile is composed of a lower and an upper edge plate. Spacers are provided between the lower and the upper edge plate, engage in the screws for fastening the slope wedges. - The solar module is supported on the long sloping sides of two adjoining sloping wedges. A remaining between the short sloping sides of the slope wedges opening can be closed with a Windableitblech. The known solar module assembly requires a relatively high manufacturing and assembly costs. The production of the elongated profiles is complex. It first requires the production of a lower and an upper edge plate and subsequently a connection of the edge plates with intermediate connection of spacers. For mounting the slope wedges, the production of several relatively complex screw is required.

The object of the invention is to eliminate the disadvantages of the prior art. It is particularly indicated advertising A possible ^¬ lichst simple and inexpensive to manufacture device for supporting solar panels on a flat roof the. According to a further object of the invention, the device should be quick and easy to install.

This object is solved by the features of claims 1 and 18. Advantageous embodiments of the invention will become apparent from the features of claims 2 to 17, 19 and 20.

According to the invention it is proposed that each of the support means has a Kantrohr, on which at least one angled, made of a folded sheet metal support profile is attached. - In departure from the prior art, a square tube is used as an elongated profile for supporting the Stützein ^¬ direction on the flat roof. Such a Kantrohr, which z. B. has a rectangular cross-section is conventionally available. It can be for example aluminum by means of extrusion technique Herge ^¬ is relatively simple. The provision of a Kantrohrs has the further advantage that protected from external influences electrical lines can be performed. Instead of an egg from ^¬ nem solid material gradient produced a wedge made of a folded sheet metal support profile according to the invention now used. The use of the proposed support profile allows a lightweight design of the support device. This facilitates the mounting of the device on a flat roof. The proposed support ^profile is advantageously produced using laser cutting technology and then combined with an extruded square tube.

The support devices according to the invention can be prefabricated in the manner of modules as needed in the manufacturing company. On the cantilever tube of each support device, there are teilhafterweise several extending in the same direction ^¬ de support profiles attached. By means of two such ausgebil ^¬ deterministic support means can be supported more solar modules or fixed simultaneously. For example, two, three, four, five or even six support profiles can be mounted one behind the other on the cantilever tube.

To simplify the production, it has proven to be advantageous for the support profile to have attachment tabs or sections provided with first openings at both of its ends. The first breakthroughs are used to carry ^¬ leadership of fasteners, such as screws or rivets. The outer shape of a sheet metal used for the production of the support profiles can be produced just like the first perforations by means of laser cutting technology.

The fastening portions are expediently be so ^¬ staltet that the support profile is substantially form-fitting attachable to the head tube. This further facilitates the manufacture of the support means. To attach the

Supporting profiles can be ^¬ inserted and subsequently secured by the attachment of mounting ^¬ convey quickly and easily this first on the square tube. Each of the support profiles advantageously comprises a straight first support section with a a clamping fastening of a solar module resting thereon enabling Fixed To ^¬ supply profile or -means. The fastening profile can be screwed to the first support section or screwed after placing the solar module. For this purpose Einpressmuttern may be provided in the first support section. The necessary for attaching Einpressmuttern 6-sided further breakthroughs in the support profile can in turn be produced by means of laser cutting technology.

According to a further advantageous embodiment of the invention extends from the end of the first support portion at least one support member for supporting a on the first Stützab ^¬ cut resting solar module. In the support member may, for example, one or more metal tabs han ^¬ spindles. The provision of the support elements facilitates the mounting of the solar modules on the support profiles. They can first abge ^¬ supported with its lower long edge against the support elements and subsequently inserted into the provided on the first support sections fastening profiles. The support profile may further comprise a straight second support portion which forms an angle in the range of 45 ° to 140 ° with the first support portion. Üblicherwei ^¬ se forms the second support portion to the first Stützab ^¬ cut an angle in the range of 60 ° to 120 °. In this case, the second support portion is usually formed shorter than the first support portion, so that the supported with the support profile solar modules at an angle of 5 ° to 35 °, preferably ^¬ from 10 ° to 25 °, relative to the square tube schrägge ^¬ are.

In principle, a connection between two adjacently arranged support devices can take place by means of a solar module which is fastened in each case to the first support sections of the respective support profiles. This allows a particularly quick and easy installation. To increase the stability of the device may be provided for connecting two parallel to each other with the support profiles parallel support means advantageously a connecting wall, wel che is in each case on the second support portion of the support profiles ^{¬ introduced} . As a result of the connection of the support devices by means of the solar modules and / or the connecting walls, a lattice-type structure is produced overall, which has a high stability against wind forces. The stability of the gitterar ^¬ term structure is so large that can be dispensed with altogether, or at least substantially to the provision of the roof skin penetrating fasteners. The provision of the connecting wall additionally counteracts lifting of the device by wind or storm gusts.

The, preferably made of a sheet, connection ^¬ wall may be provided on its side facing away from the second support portions with a reflective coating. In particular, when the solar panels are not directed due south from ^¬ to allow falling on the connecting wall sunlight reflects at least in part to a befindli ^¬ ches near solar module, for a total of response are ^¬ degree increased. For the purposes of the present invention, the term "reflective coating" is to be understood generally. It may be, for example, a polished metal surface. Further, it may be that the connecting wall is made of a sheet metal structure which reflects light incident thereon in a suitable manner on the opposing against ^¬ solar module. Such a structural ^¬ sheet may also be polished. A reflection caused thereby can be diffuse.

According to a further embodiment, a side wall for covering a second opening surrounded by the support profile and a section of the Kant tube is attached to the support profile. Ins ^¬ particular external support means can thus be prevented that the device is lifted by the action of wind or storm gusts.

According to a particularly advantageous embodiment, the support profile is fastened by means of a rivet or self-drilling screws on the cantilever. Likewise, the connecting wall may also be fastened to the second support sections by means of a rivet connection or self-drilling screws and / or the side wall to the support profile with a riveted connection or self-drilling screws. The proposed compound can be produced easily and quickly. This is in particular a simple installation of the device on site possible. The openings for the preparation of the compound are advantageously produced in the elements to be connected already during their production by means of laser cutting.

According to a further embodiment, the Kant tube in the vicinity of the support profile on at least a third opening for performing a connection cable. In order to prevent the ingress of water into the square tube, can be provided a rubber seal or a sealing profile between the peripheral edge of the third break-through and the cable, which is ge ^¬ maintain form-fitting at the peripheral edge of the third breakthrough.

According to a further advantageous embodiment that is

Kant tube provided at its one end with a plug-in element which is inserted into an open end of another cantilever ei ^¬ ner further support means substantially form-fitting manner. This makes it possible to connect several support devices in the longitudinal direction with each other. Such a connection can be secured by attaching one or more rivets. The by plugging together connectable plug-in devices further facilitate the assembly of the device. Apart from that, at one

Insert into each other while maintaining a distance between the support means an expansion joint can be made.

According to a further embodiment, two substantially mutually parallel support means are connected by approximately perpendicular to the extension direction of the cantilevers ^¬ attached cross-connection elements. In this embodiment, the cantilevers and the cross-connection elements may in particular form a grid-like structure. Such a structure increases the stability of the device, in particular against attack by wind or storm gusts. - The Kantrohre and / or the cross-connection elements can be used to further protect against the action of z. B. a storm can be at least partially fixed by means of anchor elements in the flat roof. Alternatively or additionally, it is also possible, for securing the device, to place weights, for example concrete elements, at least on a part of the cantilever tubes and / or the transverse elements.

The square tube is expediently a 4-square tube, which preferably has a rectangular cross section. Such 4-Kantrohre are inexpensive and robust.

Advantageously, the device is made of aluminum, before ^¬ preferably made from anodized aluminum. Aluminum is lightweight and corrosion resistant, especially in the anodized state.

The device according to the invention can be mounted particularly easily on site. It is conveniently in the form of a Kits or kits provided which comprises at least two connection support means and at least one Ver ^¬ binding wall for connecting two second support portions of two ^¬ he juxtaposed support means. The kit may further comprise at least two side walls and / or at least two cross-connection elements. The kit consists IMP EXP ^¬ including from relatively few parts which easily and quickly for. B. can be interconnected by riveting and / or self-drilling screws.

^Exemplary embodiments will be explained in greater detail below with reference to the drawings. Show it:

1 is a perspective view of a first Solarmo ^¬ dulanordnung,

2 is a side view of FIG. 1,

3 shows an exploded view of a device for supporting solar modules according to FIGS. 1 and 2,

4 shows a second solar module arrangement,

Fig. 5 is a side view of FIG. 4 and

Fig. 6 is a further exploded view of the device for

Supporting solar modules according to FIGS. 1 to 3.

In the first solar module arrangement shown in FIGS. 1 and 2, three support devices 1 are arranged in parallel alignment with one another. As can be seen in particular in conjunction with FIG. 3, each of the column directions 1 has a 4-edge tube 2, to which a plurality of support profiles 3 are attached. were brought. The supporting profiles 3 are preferably made of a ^¬ sheet aluminum folded in each case have a long first support section 4 and one of them on in an angle of preferably 70 ° to 110 ° extending short second support portion. 5 At the two free ends of the first 4 and the second support portion 5 Be ^¬ fastening tabs 6 are respectively provided, which engage around the 4-square tube 2 in sections substantially form-fitting manner. The support profiles 3 are connected to the 4-square tube 2 by means of the rivet connections which penetrate through the fastening straps 6.

The reference numeral 7 is a, z. B. made of an aluminum sheet, called connecting wall. The Verbin ^¬ dung wall 7 is attached to the second support portions 5 of two next to each other arranged support means 1, and thus establishes a connection between the supporting means 1 here.

Side walls 8, which also forms overall an aluminum plate may be, cover a triangular opening which is ge by attached to the 4-Kant pipe 2 supporting profile 3 forms ^¬. The side walls 8 can also be connected to the support profiles 3 by means of a riveted connection. By the reference numeral 9 are provided in the 4-square tube 2

Openings for passing connection cables for supported on the first support sections 4 solar modules 10 referred to. The solar modules 10 are z. B. means (not ge here ^¬ displayed) securing means supported on the first supporting portions 4 by clamping. The fastening means are connected by means of screw with provided in the first mounting portions 4 Einpressmuttern (not shown here). In the second solar module arrangement shown in FIGS. 4 and 5, a supplementary support profile 11 is connected to the support profile 3, which has a long third support section 12 and a short fourth support section 13. A win ^¬ angle between the third 12 and the fourth support portion 13 advantageously corresponds to the angle, which include the first 4 and the second support portion 5. The supplementary support profile 11 is designed so that it extends in the mounted on the 4-edge profile 2 state with the third support portion 12, the first support portion 4 in a straight line. The third support portion 12 is designed so that there ^¬ up another solar module 10 can be supported. With the supplementary support profile 11 in manufacture technically particularly simple manner, a further support device 1 can be provided ', can be supported with respect to the 4-Kant tube 2 with the two solar modules 10 immediacy ^¬ bar sequentially in a predetermined angle, for example 10 ° to 30 °. Even with the other

Support devices 1 'formed device - may be provided - similar to the first solar module assembly shown in Fig. 1 and 2 - connecting walls 7 and side walls. The connecting walls 7 and the side walls 8 are exposed to wind and thus prevent lifting of the device.

For further stabilization, cross-connection elements (not shown here) can be provided, which connect the 4-cantilevered tubes 2 with one another and extend approximately perpendicular to their extension direction. In the Querverbindungselemen- th may involve more folded plates or square pipes 4-han ^¬ spindles, which are in turn suitably connected by means of a rivet ^¬ conjunction with the 4-square pipes. 2 As can be seen in particular from FIG. 3, the device ^{according to the} invention consists of relatively few parts. For mounting, it is only necessary to align the support means 1, 1 'substantially parallel to each other and initially bind together by means of the connecting ^walls 7 to ver ^¬ . This can be done by riveting relatively quickly and easily. Subsequently, the Solarmo ^¬ modules 10 can be mounted. To further facilitate the assembly, connection cables (not shown here) can already be prefabricated through the 4-square tubes 2 and the openings 9. To connect the connection cable with the solar modules 10 may be provided a plug connection. After attaching the side walls 8, which can also be done with a riveted joint, the assembly of the solar module assembly is already completed.

Fig. 6 1 shows a further exploded view of the device according to FIGS. To 3. As shown in Fig. 6 it is seen that provided at the ends of the supporting profiles 3 attachment portions have Fixed To ^¬ supply tabs 6, as well as openings for performing fastening means in the legs of the U- profile-like designed support profiles 3. At the fastening-side end of the first support portion 4 are formed as sheet metal tabs 14

Provided supporting elements which extend from the first Stützab ^{¬ section} 4. By the reference numeral 15 clamping elements are referred to, which can be mounted as needed on the first Stützab ^¬ sections 4. Such clamping elements 15 are mounted on the support profiles 3 of those support means 1 which side by side two solar modules 10 abstüt ^¬ zen. By the reference numeral 16 are further clamping elements be ^¬ draws, which also on the first support sections. 4 the support profiles 3 can be mounted as needed. The other clamping members 16 serve the clamping mounting of the solar panels 10 when there only one solar module 10 is abge ^¬ supports, ie the support means 1 as randliche

Supporting device is used.

Plug-in elements 17, which may be configured, for example, in the manner of a U-profile serve the longitudinal connection of the 4-Kantrohre 2. In this case, a connection between the 4-Kantrohren 2 be configured by means of the plug elements so that between the 4-Kantrohren second an expansion joint remains, by means of which temperature-induced changes in length of the 4-square pipes 2 can be compensated. On one of the Stützpro ^¬ fil 3 facing away underside of the 4-Kantrohre 2, rubber elements 18 are preferably made of EPDM, which ensure a substantially full-surface contact of the support means 1 with a pad. - Instead of the rubber elements 18 and plate-like feet can be provided which distribute the load acting on the roof. Such plate-like feet can be made for example of deep-drawn aluminum.

Reference sign list

1 support device

1 'further support device

2 4-Kantrohr

3 support profile

4 first support section

5 second support section

6 fastening strap

7 connecting wall

8 side wall

9 breakthrough

10 solar module

11 supplementary support profile

12 third support section

13 fourth support section

14 support element

15 clamping element

16 additional clamping element

17 connecting element

18 rubber element

Claims

claims

1. A device for supporting solar modules (10) on a flat roof with at least two, to the opposite edges of a solar module (10) alignable support means (1, 1 '), characterized in that each of the support means (1, 1' ) has a Kantrohr (2), on which at least one angled, made of a ge ^¬ edged sheet metal support profile (3, 11) is mounted.

2. Device according to claim 1, wherein the cantilever tube (2) a plurality of extending in the same direction supporting profiles (3, 11) are mounted.

3. Device according to one of the preceding claims, wherein the support profile (3, 11) at its two ends with first

Having apertures provided fastening portions (6).

4. Device according to one of the preceding claims, wherein the fastening portions (6) are designed so that so that the support profile (3, 11) positively on the cantilever tube (2) can be plugged.

5. Device according to one of the preceding claims, wherein the support profile (3, 11) has a straight first support section (4, 12) with a clamping attachment of a solar module (10) resting thereon enabling ^¬ tion profile (15, 16) ,

6. Device according to one of the preceding claims, wherein the end of the first support portion (4, 12) extends at least ^¬ extends a support element (14) for supporting a resting on the first support portion solar module (10).

7. Device according to one of the preceding claims, wherein the support profile (3, 11) has a straight second Stützab ^{¬ section} (5, 13), which with the first Stützab ^{¬ section} (3, 11) an angle in the range of 45 to 140 ° forms.

8. Device according to one of the preceding claims, wherein for connecting two with the support profiles (3, 11) parallel to each other aligned support means (1, 1 ') a connecting wall (7) is provided, which in each case on the second support portion (5, 13) Support profiles (3, 11) is ^{¬ introduced} .

9. Device according to one of the preceding claims, in the WO, preferably made of a sheet metal, Verbin ^¬ dung wall (7) at its second support portions (5, 13) facing away side with a reflective coating is provided.

10. Device according to one of the preceding claims, wherein the support profile (3, 11) has a side wall (8) for covering a from the support profile (3, 11) and a portion of the Kant ^¬ tube (2) surrounded second opening is attached. 11. Device according to one of the preceding claims, wherein the support profile (3,

11) by means of a rivet or self-drilling screws on the square tube (2) and / or the connecting wall (7) on the second support portions (5, 13) by means of a Rivet or drilling screws and / or the side wall (8) is fastened by means of a rivet or self-drilling screws.

12. Device according to one of the preceding claims, wherein the Kantrohr (2) in the vicinity of the support profile (3, 11) for ^{¬ at} least a third opening (9) for performing a connection cable.

13. Device according to one of the preceding claims, wherein the Kantrohr (2) is provided at its one end with a plug-in element (17) which in an open end of another Kantrohrs (2) of a further support means (3, 11) can be inserted.

14. Device according to one of the preceding claims, wherein two substantially parallel aligned support means (1, 1 ') by approximately perpendicular to the extension direction of the Kantrohre (2) mounted cross-connection elements are interconnected.

15. Device according to one of the preceding claims, wherein the Kantrohre (2) and the cross-connection elements form a grid-like structure.

16. Device according to one of the preceding claims, wherein the Kant tube is a 4-Kantrohr, which preferably has ei ^¬ nen rectangular cross-section.

17. Device according to one of the preceding claims, made of aluminum, preferably of anodized Alumi ^¬ nium.

18. Kit with at least two support devices (1, 1 ') according to one of the preceding claims, and at least one connecting wall (7) for connecting two second support sections (5, 13) of two adjacently angeord ^¬ required support means (1, 1').

19. Kit according to claim 18, comprising at least two side walls ^¬ (8).

20. Kit according to claim 18 or 19, comprising at least two cross-connection elements.