DE102006028494B4 - Support structure with solar modules on a flat roof or flat inclined roof - Google Patents

Abstract

Supporting structure (1) with one or more solar modules (2) used to generate electricity from sunlight, which are held on a flat roof or flat sloping roof (3) and have an inclined position or inclination in the use position, the supporting structure (1) being one for detecting the The lower edge (4) of the obliquely arranged solar module (2) has deep support (5) and a spaced higher support (6) for the higher area or edge of the solar module (2), the support (5) for the lower edge (4) of the solar module or modules (2) is an angle profile, in which a first angle leg (7) the narrow side (8) and the adjacent second angle leg (9) the lower edge (4) adjacent to this narrow or front side (8) of the solar module (2) in the position of use, the higher support (6) is a Z-shaped or U-shaped profile in cross-section, the lower first Z-shaped or U-shaped leg (10) towards the roof (3) is turned or attached to it and the second ...

Description

The invention relates to a support structure with one or more solar power modules serving to generate electricity, which are held on a flat roof or flat inclined roof and in use position relative to the roof an inclination or inclination, wherein the support structure arranged to detect the lower edge of the obliquely Having solar module serving deep support and a spaced higher support for the higher area or edge of the solar module.

Out DE 298 15 134 U1 is such a support structure known. Both for detecting the lower edge of the obliquely arranged solar module and for detecting the spaced parallel higher edge each serves a U-profile, wherein the U-profile is provided for the higher edge of a flexible support member to the higher when inserting the solar module initially to be able to move lying U-profile out of the range of its edge. Possibly in the deeper-lying U-profile penetrating water or rainwater must run off to the side, which seems inadequate especially in the embodiment with a relatively long lower U-profile.

From the DE 10 2004 055 187 A1 a different type of support structure is known, in which a support member may be a perforated plate provided with apertures. Since the photovoltaic modules in this case rest horizontally on corresponding support parts, the problem of water penetrating into corresponding profiles does not occur, in particular because the upper free side of the support part, which faces away from the vertical support part, is glued to the photovoltaic module in this way in that the edge of the module is flush with the elevation.

From the EP 1 619 727 A2 a modified device is known in which the obliquely arranged solar modules each have a free lower and a free upper edge and are attached to underlying longitudinal struts, which are designed as cable channels or for receiving further functional elements by means of self-tapping screws or by means of rivets.

The longitudinal struts may at certain points holes or passages for the outflow of water, but which can not get from the top of the solar modules in these longitudinal struts.

There is therefore the task of creating a support structure for solar modules of the type mentioned, which can be applied to a flat roof or flat inclined roof, but the manufacturing and assembly costs should be reduced without the risk that excessive wind forces be effective on this support structure. In particular, the solar modules or modules should be placed in their lower support and placed on their upper support and then fixed.

The object is achieved with the means and features of claim 1.

For this purpose, in a support structure according to the type defined above, the support for the lower edge of the solar modules or an angle profile, in which a first angle leg the narrow side and the adjacent second angle leg detects this narrow or front side adjacent lower edge of the solar module in the use position , wherein the higher support is a cross-section approximately Z- or U-shaped profile, the lower first Z or U-legs facing the roof or attached thereto and the second Z or U-leg engages under the solar module underside in the use position , the angle profile in its course at least one or more drain holes and the Z or U-profile has at least in its arranged between the first and the second leg central web breakthroughs and the solar modules in the position of use after insertion into the angle section and after hanging up the U or Z profile with at least ei nem of these profiles are connected by an attachment, wherein for fastening the solar modules to the profiles screws and / or rivets are provided, which detect or enforce frame parts of the solar modules in the use position.

In this way, the solar modules can be set obliquely as a flat or flat inclined roof on this by the fact that the angle profile on the one hand and the other profile riveted or bolted to the roof or fastened to a mounted on the roof rail, this attachment at the same time can be sealed. Thereafter, the solar module can then be inserted on the one hand with its lower edge in the angle profile and on the other hand connected in its higher region or edge region with a leg of the second profile. An attachment to the deeper angle profile is appropriate.

The perforations on the angle profile, which can also be slots, prevent rainwater from collecting in the angle profile. The perforations or openings in the central web of the second profile have the considerable advantage that not only saves weight, but also wind forces less resistance is opposed, so that the wind load considerably is reduced. At the same time there is a good ventilation, which prevents or reduces heat accumulation and thus improves the efficiency of the solar module or modules.

By attaching the solar modules to the profiles by means of screws and / or rivets ensures that the solar modules are sufficiently secured against wind and weather, both screws and rivets represent simple fasteners that can be inexpensively and easily mounted.

The angle profile and the U or Z-profile can be riveted to the roof in the use position and / or screwed and this attachment can preferably be sealed at the same time. This results in a stable installation, which nevertheless requires relatively few parts and is correspondingly inexpensive.

It is expedient for a sufficient attachment of the solar modules against wind and weather when the solar modules are connected in the use position with two profiles by an attachment that can be solved.

It is particularly expedient if the angle profile and / or the U or Z profile are bent sheet metal profiles. Made of folded sheet metal profiles usually have a lower weight than rolled sections and are relatively easy to manufacture. In addition, they allow virtually any choice of material.

A particularly preferred Ausführungsfarm the invention may provide that the angle section and / or the second profile are formed from perforated plates whose holes preferably have diameters or outlines, which are the diameters of the fasteners used for fastening, ie preferably the diameters of the rivets or screws, correspond and in particular be about 5, 6 or 7 millimeters.

Unusually, therefore, perforated plates, which are usually used as decorative elements or shut-off, be profiled to hold in accordance with the invention, the solar modules and at the same time the desired outflow of water on the one hand from the lower profile and the wind outlet and the rear ventilation on the to allow upper profile.

For mounting the support structure, it is favorable if the angle profile serving as a lower support on the second angle leg engaging under the solar module in use position has a further third downwardly directed angle leg and a fourth angle leg extending therefrom for connection to the roof or to a roof Carrier or the like. As a result, the second angle leg engaging under the solar module is held in one piece directly over the third and the fourth angle leg and connected directly or indirectly to the roof. Thus, it requires no special holder for detecting and attaching the angle profile.

An expedient embodiment can provide that the angle profile with its four angle legs has a total of approximately W cross-section and serves in the position of use lowermost W-leg for attachment to the roof.

But it is also possible that the lowest position used in the use position for attachment to the roof fourth angle leg of the angle profile is directed in cross section of the center of the solar module away and to the edge and in particular below the lower edge and / or the low-lying end side of the solar module is arranged or runs.

Depending on the roof structures or space for the support profiles, the user can therefore choose between a W-shaped profile and such a profile, in which the fourth leg is directed opposite to that of a W-profile.

The profiles may be made of an aluminum alloy or aluminum zinc alloy or of galvanized sheet iron or stainless steel sheet, resulting in corrosion resistance, and the sheet thickness may be adapted to the weights to be absorbed and be 1.5 millimeters to 5 millimeters. For larger and / or heavier solar modules so larger sheet thicknesses can be provided as for lighter or smaller such solar modules.

Furthermore, it is possible that the one or more profiles, in particular the U- or Z-profile at its central web, one or more reinforcements. Also by an adaptation to different weight and / or wind loads or snow loads and the like is possible.

Especially when combining one or more of the above-described features and measures results in a support structure for solar modules compared to single rods or triangular stands has the considerable advantage that in the horizontal direction or in the direction of the horizontal edges of the solar modules occurring forces well from the profiles and in particular of the U- or Z-profile can be included, because this is stiff in the longitudinal direction and thus can not yield, while single bars and individual triangle stands could give way to a corresponding force just to this side. In particular, the use of perforated plate proves to be advantageous because this has a good buckling resistance, which also results from the fact that a larger sheet thickness is possible, but which does not lead to an excessive weight of this profile due to the perforations.

Hereinafter, embodiments of the invention are described in more detail with reference to the drawing. It shows in partly considerably schematized representation:

1 a side view of a support structure according to the invention with solar module, wherein the serving for supporting the solar module profiles are shown partially in cross section to show the existing holes in them, with a first deeper profile than W-profile and a second higher profile than U- or C. Profile is formed,

2 one of the 1 corresponding representation in which the second profile is designed as a Z-profile,

3 a the 1 and 2 corresponding representation, wherein in the first lower profile of the fourth lower leg is directed away from the center of the solar module and extends below the lower edge and wherein it is indicated that the second profile be a U- or C-profile or a Z-profile can

4 an end view of a second profile, which in addition to the illustrated Z-shape may also be a U- or C-profile, wherein the central web has a stiffener attached to it, and

5 a plan view of the profile and provided on this stiffener according to 4 ,

One in total with 1 designated support structure is in modified embodiments in the 1 to 3 recognizable and each with at least one for generating electricity from sunlight serving correspondingly strongly inclined solar module 2 shown in the use position.

With the help of the supporting structure 1 are the solar modules 2 on a schematically indicated flat inclined roof 3 kept this roof 3 can have virtually no or a very low inclination of for example 3 ° or up to 20 ° or 25 °, while the solar modules 2 have a steeper inclination or inclination, in order to be well adapted to the position of the sun.

Accordingly, the support structure 1 in a manner to be described one for detecting the lower edge 4 of the slanted solar module 2 serving deeper support 5 and a higher support spaced therefrom 6 for the higher area or edge of the solar module 2 on.

In all three embodiments is the support 5 for the deeper edge 4 of the solar module (s) 2 an angle profile in which a first angle leg 7 the narrow side 8th or end face and the adjacent second angle leg 9 this narrow or front side 8th adjacent lower edge 4 of the solar module 2 recorded in the position of use.

The higher support 6 is a cross-sectionally approximately Z-shaped profile ( 2 . 3 and 4 ) or a U-shaped or C-shaped profile ( 1 ), wherein the lower first Z or U-leg 10 the roof 3 facing or attached to this and the second Z or U-leg 11 the solar module 2 engages underneath in the position of use and supports. You can clearly see in 1 . 2 and 3 that the thighs 10 and 11 do not run in mutually parallel planes, but the cross sections of these legs according to the inclination of the respective solar module 2 form an angle with each other.

In the 1 to 3 is further shown that the lower support 5 forming angle profile in its course at least one or more drain holes 12 and the Z or U-profile at least in a middle web arranged between the first and the second leg 13 Breakthroughs or perforations 14 having. You can clearly see that the drain holes 12 at the lowest point of the first angle leg 7 are arranged so that no rainwater or snow water or the like can remain in the angle profile, as this in any case through this lowest drain holes 12 expires. In addition, also higher lying drain holes 12 on the angle leg 7 be provided. Furthermore, could also be the second angle leg 9 Have drain holes. Also, slots may be provided as drains.

The breakthroughs or perforations 14 at the middle jetty 13 allow ventilation and reduce the wind forces on the supporting structure 1 can attack while reducing the weight.

In 1 is indicated that the angle profile and the U or Z profile with the roof 3 riveted in use position and / or can be screwed, with this attachment 15 can still be sealed at the same time.

Furthermore, in 1 indicated that the solar modules 2 in use position after insertion into the angle profile and after placing on the U or Z profile with at least one of these profiles, in the embodiment with two profiles by a fastening 16 may preferably be detachably connected, wherein for fixing the solar modules 2 may be provided on the profiles screws and / or rivets, in the position of use, for example, frame parts of the solar modules 2 capture or enforce which contact with the profiles. Also at these points seals can be provided.

The angle profile and also the U- or Z-profile can be bent sheet metal profiles, with perforated plates are preferred because they are the drainage holes 12 and the breakthroughs or perforations 14 then included from the beginning, so these holes 12 or 14 no longer need to be attached. The holes can be 12 and 14 for example, have the diameters or outlines that correspond to the diameters of the fixing elements serving for fastening, so preferably the diameters of the rivets or screws and for example be about 5, 6 or 7 millimeters. Such perforated plates are commercially available and also have the appropriate dimensions, so that the production is easy, because the mounting holes do not need to be additionally attached.

In the 1 to 3 one recognizes that the angle profile on the solar module in the position of use 2 engaging second angle leg 9 another with its cross section downwardly directed third angle leg 17 and on this in turn at the edge thereof emanating from this fourth angle leg 18 for connection to the roof 3 having. This results in an angle profile, which with its four angle legs 7 . 9 . 17 and 18 has an approximately W-shaped cross-section, wherein the lowest position in the use position W-leg 18 for attachment to the roof 3 serves.

In 3 is shown that the lowest in the position of use, for attachment to the roof 3 serving fourth thighs 18 the angle profile in cross section also from the center of the solar module 2 can be directed away and under the lower edge 4 and the deeper end 8th of the solar module 2 passes through or is arranged there. Also the thus with respect to the arrangement 1 and 2 oppositely directed legs 18 serves in an analogous way, as it is in 1 is indicated, for attachment to the flat roof 3 or a profile rail or the like located there.

3 indicates that with this modified angle profile as a higher support turn either a Z-shaped or a U- or C-shaped profile can be combined to the support structure 1 to build.

In order to accommodate higher forces can, according to the 4 and 5 the middle jetty 13 of the higher support 6 forming Z or U-profile with one or more stiffeners or reinforcements 19 be provided in accordance with 5 again can be an angle profile.

The supporting structure 1 for solar modules 2 , which are used for power generation and on a flat roof or a little inclined roof 3 with a more oblique or greater inclination than this, has a deeper support 5 for the bottom edge 4 of the oblique solar module 2 and a higher support spaced therefrom 6 for the upper area or edge of this solar module 2 , As a deeper support is a longitudinal direction of the lower edge 4 extending angle profile and for the higher edge a parallel thereto, provided in cross-section Z- or U- or C-shaped profile, wherein the angle profile at least one or more drain holes or openings 12 and the U or Z profile at least some breakthroughs to reduce wind forces and better ventilation of the solar modules 2 having.

Claims (12)

Supporting structure ( 1 ) with one or more solar modules used for generating electricity from sunlight ( 2 ) on a flat roof or a flat roof ( 3 ) and in the position of use have an inclination or inclination, wherein the supporting structure ( 1 ) one for detecting the lower edge ( 4 ) of the obliquely arranged solar module ( 2 ) deep support ( 5 ) and a spaced higher support ( 6 ) for the higher area or edge of the solar module ( 2 ), wherein the support ( 5 ) for the deeper edge ( 4 ) of the solar module (s) ( 2 ) is an angle profile, in which a first angle leg ( 7 ) the narrow side ( 8th ) and the adjacent second angle leg ( 9 ) of this narrow or front side ( 8th ) adjacent lower-side edge ( 4 ) of the solar module ( 2 ) in the position of use, the higher support ( 6 ) is a Z-shaped or U-shaped profile in cross-section, wherein the lower first Z or U-leg ( 10 ) the roof ( 3 ) or attached thereto and the second Z or U-leg ( 11 ) the solar module ( 2 ) engages underneath in the position of use, the angle profile in its course at least one or more drain holes ( 12 ) and the Z or U-profile at least in its intermediate web disposed between the first and the second leg ( 13 ) Breakthroughs ( 14 ) and the solar modules ( 2 ) in the use position after insertion into the angle section and after placing on the U- or Z-profile with at least one of these profiles are connected by an attachment, for fastening the solar modules to the profiles screws and / or rivets are provided in the position of use of the frame parts Solar modules ( 2 ) capture or enforce. Supporting structure according to claim 1, characterized in that the angle profile and the U- or Z-profile with the roof ( 3 ) is riveted and / or screwed in position of use and that this attachment is preferably sealed at the same time. Supporting structure according to claim 1 or 2, characterized in that the solar modules ( 2 ) are connected in use position with two profiles by a fastening. Supporting structure according to one of claims 1 to 3, characterized in that the solar modules ( 2 ) are releasably connected in the position of use with at least one of these profiles. Supporting structure according to one of claims 1 to 4, characterized in that the angle profile and / or the U or Z profile are bent sheet metal profiles. Supporting structure according to one of claims 1 to 5, characterized in that the angle profile and / or the second profile are bent perforated plates. Supporting structure according to one of claims 1 to 6, characterized in that the angle profile and / or the second profile are formed from perforated plates whose perforations ( 12 . 14 ) preferably have diameters or contours which correspond to the diameters of the fixing elements used for fastening, that is preferably the diameters of the rivets or screws, and in particular about 5, 6 or 7 mm. Supporting structure according to one of claims 1 to 7, characterized in that the angle profile on the in use position the solar module ( 2 ) engages under second angle leg ( 9 ) a further downwardly directed third angle leg ( 17 ) and a fourth angle leg ( 18 ) for connection to the roof ( 3 ) having. Supporting structure according to claim 8, characterized in that the angle profile with its four angle legs ( 7 . 9 . 17 . 18 ) has a total of approximately W-shaped cross-section and in the position of use the lowermost W-leg ( 18 ) for attachment to the roof ( 3 ) serves. Supporting structure according to claim 8 or 9, characterized in that the lowest in the position of use, for attachment to the roof ( 3 ) serving fourth angle legs ( 18 ) of the angle profile in cross-section from the center of the solar module ( 2 ) and, in particular, below the low-lying edge ( 4 ) and the low-lying end face ( 8th ) of the solar module ( 2 ) passes through or is arranged. Supporting structure according to one of claims 1 to 10, characterized in that the profiles consist of an aluminum alloy or aluminum zinc alloy or of galvanized sheet iron or stainless steel sheet and that the sheet thickness is adapted to the male weights and 12 millimeters to 5 millimeters. Supporting structure according to one of the preceding claims, characterized in that the one or more profiles, in particular the U- or Z-profile, at its central web ( 13 ) one or more stiffeners or reinforcements ( 19 ) having.

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