DE102021124626A1 - Photovoltaic mounting system with a foot element - Google Patents

Abstract

The invention relates to a photovoltaic mounting system for mounting at least one photovoltaic module on a roof, in particular a flat roof, with a base element for supporting the photovoltaic module, with a module support element attached thereto being provided on the base element and the module support element on the base element by one Pivot axis is pivoted.

Description

Background of the Invention

The invention relates to a photovoltaic mounting system for mounting at least one photovoltaic module on a roof, in particular a flat roof, with a base element for supporting the photovoltaic module.

In photovoltaic systems, photovoltaic modules in the form of rectangular panels are used to convert sunlight into electricity. For this purpose, these modules are to be arranged largely stationary in a generally sloping position on, in particular, flat roofs of buildings with little or no inclination. For this purpose, known photovoltaic mounting systems comprise a floor element, usually in the form of a floor rail, which is optionally placed on a protective mat on the flat roof or a roof surface. Foot elements are mounted with their foot area on the floor rail, with a module support element then being attached to the respective head area of the foot elements. Four such base elements each support a photovoltaic module at its edge areas with their module support elements. Furthermore, floor pans into which ballast bodies are to be inserted extend between the floor rails in order to weigh down the entire arrangement and, if necessary, to be able to hold it on the associated roof solely by weight. Furthermore, struts, cable ducts and wind deflectors can also be attached to such photovoltaic mounting systems.

Underlying Task

The invention is based on the object of creating a photovoltaic mounting system that meets the resulting structural requirements and at the same time is particularly easy to mount.

Solution according to the invention

This object is achieved according to the invention with a photovoltaic mounting system for mounting at least one photovoltaic module on a roof, in particular a flat roof, with a base element for supporting the photovoltaic module, with a module support element attached thereto being provided on the base element and the module support element on the foot element is mounted pivotably about a pivot axis.

With the pivotability of the module support element on the foot element according to the invention, such a mounting system can adapt optimally to both static and dynamic and thermal loads, while at the same time the necessary support and holding forces are provided in an operationally reliable manner. At the same time, the module support element can be mounted on the base element in a particularly simple manner, in that it is inserted or attached to the base element in the direction of its pivot axis in the manner of a hinge. In this case, the module support element is preferably designed with a pivot pin which is inserted into the associated foot element.

The module support element is preferably mounted so as to be pivotable about the pivot axis in an angular range of 60°, in particular 40°. Such an angular range is sufficiently large for the inventively desired adjustability of the module support element relative to the base element and at the same time so small that a compact design and high stability of the overall arrangement are nevertheless ensured. For this purpose, the module support element is particularly preferably mounted such that it can be pivoted about the pivot axis from the horizontal in an angular range of +/-30°, in particular +/-20°.

In the photovoltaic mounting system according to the invention, the module support element is preferably also mounted on the foot element at the same time so that it can move axially. With the axial mobility, such a mounting system can also optimally adapt to both static and dynamic and thermal loads, while at the same time the necessary supporting and holding forces are provided in an operationally reliable manner. The axial mobility also enables size tolerances of the installed photovoltaic modules to be automatically compensated for by the construction according to the invention, particularly in the width direction from foot element to foot element, without any special setting or adjustment activities by the assembly personnel. The module support element is particularly preferably mounted on the foot element so that it can move axially from a central position on the foot element in a travel range of +/-20 mm, in particular +/-10 mm.

In such a photovoltaic mounting system according to the invention, the foot element and the module support element are preferably both made with an aluminum extruded profile. Such a design is particularly inexpensive to produce, advantageous to assemble and at the same time light and weatherproof.

Furthermore, the foot element is preferably attached to a floor element which is to be placed on the associated roof. The foot element can thus be positioned particularly easily on the associated roof by means of the floor element. The foot element is preferably on the floor element ment simply attached by means of a snap-in connection.

The latching connection is advantageously formed with a first latching hook, which has a first latching lug hooking behind the adjacent floor element, and a second latching hook, which has a second latching lug hooking behind the adjacent floor element, and wherein the first latching lug is provided on a first latching arm, the is designed to be flexible, whereby the first locking lug springs back when the rear hook is reached.

The first locking arm according to the invention is designed to be springy or elastically deformable and interacts with a second locking arm so that both locking arms together generate the retaining force required for holding the floor element and adjacent element together. The first locking lug creates a form-fitting connection to the adjacent element, which can absorb a particularly high retaining force. At the same time, the adjacent element can be fixed in place on the floor element by simply hooking it back and then snapping in the two snap-in hooks. The sequence of rear hooks and latching can vary between the first and the second latching hook, which means that assembly can be particularly flexible.

The invention is also directed to a photovoltaic mounting system of the above-mentioned type according to the invention, with a base element and a base pan attached thereto, the base pan being connected to the base element in particular by means of a snap-in connection.

The latching connection is preferably formed with a first latching hook, which has a first latching lug hooking behind the adjacent element, and a second latching hook, which has a second latching lug hooking behind the adjacent element, the first latching lug being provided on a first latching arm which is designed to be flexible, whereby the first locking lug springs back when the rear hook is reached. The latching of this type is designed similarly to the above-mentioned latching between the floor element and the adjacent element and thus also has similar advantages in terms of ease of assembly and stability or strength.

character list

• 1 eine perspektivische Ansicht eines Ausführungsbeispiels eines erfindungsgemäßen Photovoltaik-Montagesystems,
• 2 das Detail II gemäß 1 während der Montage eines ersten Fußelements des Photovoltaik-Montagesystems,
• 3 das Detail III gemäß 1 während der Montage eines zweiten Fußelements des Photovoltaik-Montagesystems,
• 4 das Detail IV gemäß 1 während der Montage einer ersten Ausführungsform eines Windleitbleches des Photovoltaik-Montagesystems,
• 5 das Detail IV gemäß 1 während der Montage einer zweiten Ausführungsform eines Windleitbleches des Photovoltaik-Montagesystems,
• 6 eine vergrößerte Seitenansicht des ersten Fußelements,
• 7 eine Seitenansicht eines zweiten Fußelements mit daran angebrachtem Modulstützelement in waagrechter Stellung,
• 8 die Ansicht gemäß 7 mit dem Modulstützelement in nach rechts geschwenkter Stellung,
• 9 die Ansicht gemäß 7 mit dem Modulstützelement in nach links geschwenkter Stellung,
• 10 eine Seitenansicht eines ersten Fußelements mit daran angebrachtem Modulstützelement in waagrechter Stellung,
• 11 die Ansicht gemäß 10 mit dem Modulstützelement in nach rechts geschwenkter Stellung,
• 12 die Ansicht gemäß 10 mit dem Modulstützelement in nach links geschwenkter Stellung.

An exemplary embodiment of the solution according to the invention is explained in more detail below with reference to the accompanying schematic drawings. It shows:

• 1 a perspective view of an embodiment of a photovoltaic mounting system according to the invention,
• 2 the detail II according to 1 during assembly of a first foot element of the photovoltaic assembly system,
• 3 the detail III according to 1 during the assembly of a second foot element of the photovoltaic mounting system,
• 4 the detail IV according to 1 during the assembly of a first embodiment of a wind deflector of the photovoltaic assembly system,
• 5 the detail IV according to 1 during assembly of a second embodiment of a wind deflector of the photovoltaic assembly system,
• 6 an enlarged side view of the first foot element,
• 7 a side view of a second foot element with a module support element attached to it in a horizontal position,
• 8th according to the view 7 with the module support element in the position pivoted to the right,
• 9 according to the view 7 with the module support element in the left-pivoted position,
• 10 a side view of a first foot element with a module support element attached to it in a horizontal position,
• 11 according to the view 10 with the module support element in the position pivoted to the right,
• 12 according to the view 10 with the module support element in the position pivoted to the left.

Detailed description of the embodiment

A photovoltaic mounting system 10 is shown in the figures, by means of which photovoltaic modules 12 can be arranged on a largely flat and in particular almost horizontal roof surface 14 of a roof (not shown further). like it in 1 As can be seen, the photovoltaic modules 12 arranged in this way are then largely stationarily positioned and aligned with the course of the sun at an angle of between 5° and 30°, in particular between 10° and 20°, to the horizontal.

For this purpose, the photovoltaic mounting system 10 includes strip-shaped floor elements 16 in the form of an aluminum plate, which are placed on the roof surface 14 by means of a base 18 made of fleece, which is also in the form of strips. The base 18 is located between the roof surface 14 and the underside of the respective floor element 16. In the individual floor element 16 arranged as pairs, straight locking slots 20 are formed, which are aligned transversely to the main extent of the strip-shaped floor element 16 and extend parallel to one another.

First foot elements 22 and second foot elements 24, which are designed as extruded aluminum profiles, are placed on such floor elements 16. The foot elements 22 and 24 each have a bottom wall 26 which extends essentially horizontally and in the central region of which there is a bottom curvature 28 directed upwards. The bottom wall 26 is adjoined on its right and left side by a side wall 30 which, depending on the top, initially protrudes essentially perpendicularly from the bottom wall 26 . These two side walls 30 are then connected transversely in their upper area by means of a top wall 32 . In the head wall 32 which extends essentially horizontally in this way, a downwardly directed head groove 34 is formed which, viewed in cross-section, is essentially circular and open in the form of a slit at the top. The head wall 32 of the first foot element 22 is connected in the area of the head groove 34 to one of the side walls 30 by means of a support wall 36 . In the case of the second foot element 24, however, the two side walls 30 are constructed higher than in the case of the first foot element 22. Furthermore, these side walls 30 are connected in a stabilizing manner by two transverse walls 38 which extend essentially transversely between them.

A module support element 40, which is also designed as an aluminum extruded profile, is placed on each of the foot elements 22 and 24 of this type.

The individual module support element 40 is provided with a bottom wall 42 which extends essentially horizontally and at the same time is slightly arched downwards. A bottom web 44 protrudes downward from the bottom wall 42 and is essentially circular when viewed in cross section. The size of the circular shape of the bottom bar 44 is dimensioned such that the bottom bar 44 supports the module support element 40 on the associated base element 22 or 24 such that it can be pivoted slightly about a pivot axis and at the same time be axially displaceable, i.e. slightly movable overall. On the upper side of the module support element 40 there is a head wall 46 which forms a support surface for the photovoltaic module 12 which is then arranged there. In this case, the photovoltaic module 12 is clamped by means of a module clamp 48 which is held in place by a screw 50 on the head wall 46 .

The individual foot elements 22 and 24 are each held on the associated floor element 16 by means of a latching connection 52 . The snap-in connection 52 is formed with a first snap-in hook 54 which protrudes downwards from the associated bottom wall 26 within the bottom curvature 28 . The first latching hook 54 is formed with a first latching arm 56, the thickness of which is designed thinner than the remaining wall thicknesses of the associated foot element 22 or 24 and the length of which is also designed such that it is generally resilient or flexible transversely to its longitudinal extension. At the lower end area of the first locking arm 56 there is a first locking lug 58, on the side facing away from the associated foot element 22 or 24 there is an outwardly directed insertion bevel 60. The latching connection 52 is also formed with a second latching hook 62 which protrudes downwards from the associated bottom wall 26 at the edge of the bottom curvature 28 . The second latching hook 62 is formed with a second latching arm 64, the thickness of which is similar in thickness to the remaining wall thicknesses of the associated foot element 22 or 24, and the length of which is shorter than the first latching arm 56 so short that it is transverse to its Longitudinal extension is rigid. At the lower end area of the second latching arm 64 there is a second latching lug 66, on the side of which facing away from the associated foot element 22 or 24 there is also an outwardly directed insertion bevel 68. To produce the respective latching connection 52 , the foot element 22 or 24 is then inserted with its respective second latching hook 62 into one of the latching slots 20 , with which the respective second latching lug 66 hooks onto the associated base element 16 . The associated first latching hook 54 is then pushed into the adjacent second latching slot 20 until its first latching lug 58 also hooks behind the associated floor element 16 and the respective foot element 22 or 24 is held stationary on the floor element 16 in this way.

As in particular in 4 is shown, a total of four locking slots 70 are formed on the second foot elements 24 on one side wall 30, which are similar to the locking slots 20 grouped as two pairs. A transversely aligned, strip-shaped wind deflector plate 72 is to be arranged on each of these latching slots 70 . For this purpose, four through-slots 74 are formed in the wind deflector 72, which can be made congruent with the latching slots 70. Furthermore, two locking clips 76 made of extruded aluminum are provided, each having a flat head wall 78 sen, from which then referred to 4 protrude to the left a first latching hook 54 and a second latching hook 62, as described above. With such latching clips 76, the associated wind deflector 72 can be attached to the associated base element 24 in a substantially stationary manner.

In the same way as the wind deflector 72 is to be fixed in place on the second foot element 24 by means of two locking clips 76, a strip-shaped floor pan 80, also made of sheet metal, is to be fixed in place on the associated floor element 16 by means of through-slots 74 and two locking clips 76. this is in 4 and in 5 illustrated.

The 5 12 also shows an alternative way of attaching a wind deflector 72 to a foot element 24. The wind deflector 72 is held in its upper region by means of a self-tapping screw 82 which is screwed into the side wall 30 of the foot element 24. In its lower region, the wind deflector 72 fastened in this way has previously been inserted into a support channel 84, which further simplifies its assembly.

In the 6 Finally, a first foot element 22 is shown enlarged again for better understanding, in particular of the two latching hooks 54 and 62, of which the first latching hook 54 is resilient due to a comparatively large length and smaller thickness and the second latching hook 62 is rigid due to a comparatively small length and larger thickness is designed.

In the 7 until 12 the possible pivoting of the module support element 40 attached to the respective foot element 22 or 24 is illustrated. where is in 8th to recognize that the module support element 40 is to be pivoted on the foot element 24 by a pivot angle 86 of up to 14 ° to the right, while on the other hand according to 9 can be pivoted to the left by a pivoting angle 86 of up to 13°. According to 11 the module support element 40 can be pivoted to the right on the associated foot element 22 by a pivot angle 86 of up to 16°, while on the other hand it is in accordance with FIG 12 can be pivoted to the left by a pivoting angle 86 of up to 15°.

Finally, it should be noted that all the features that are named in the application documents and in particular in the dependent claims, despite the formal reference made to one or more specific claims, should also be entitled to independent protection, either individually or in any combination.

Reference List

10

Photovoltaic mounting system

12

photovoltaic module

14

roof surface

16

floor element

18

document

20

snap slot

22

first foot element

24

second foot element

26

bottom wall

28

bottom concavity

30

sidewall

32

head wall

34

head groove

36

retaining wall

38

transverse wall

40

module support element

42

bottom wall

44

bottom walkway

46

head wall

48

module clamp

50

screw

52

snap connection

54

first latch

56

first locking arm

58

first detent

60

lead-in bevel

62

second latch hook

64

second locking arm

66

second detent

68

lead-in bevel

70

snap slot

72

wind deflector

74

through slot

76

locking clip

78

head wall

80

floor pan

82

screw

84

support channel

86

swivel angle

Claims (10)

Photovoltaic mounting system (10) for mounting at least one photovoltaic module (12) on a roof, in particular a flat roof, with a base element (22, 24) for supporting the photovoltaic module (12), characterized in that on the base element ( 22, 24) a module support element (40) attached thereto is provided and the module support element (40) is pivotably mounted on the base element (22, 24) about a pivot axis. Photovoltaic mounting system (10) according to claim 1 , characterized in that the module support element (40) is mounted pivotably about the pivot axis in an angular range of 60°, in particular of 40°. Photovoltaic mounting system (10) according to claim 1 or 2 , characterized in that the module support element (40) is mounted pivotable about the pivot axis from the horizontal in an angular range of +/- 30°, in particular +/- 20°. Photovoltaic mounting system (10) according to one of Claims 1 until 3 , characterized in that the module support element (40) on the foot element (22, 24) is also mounted axially movable. Photovoltaic mounting system (10) according to claim 1 , characterized in that the module support element (40) is mounted on the base element (22, 24) so that it can move axially from a central position in a travel range of +/- 20 mm, in particular +/- 10 mm. Photovoltaic mounting system (10) according to one of Claims 1 until 5 , characterized in that the foot element (22, 24) and the module support element (40) are both made with an aluminum extruded profile. Photovoltaic mounting system (10) according to one of Claims 1 until 6 , characterized in that the foot element is attached to a floor element (16) which is to be placed on the associated roof. Photovoltaic mounting system (10) according to claim 7 , characterized in that the foot element is attached to the base element (16) by means of a snap-in connection (52). Photovoltaic mounting system (10) according to claim 8 , characterized in that the latching connection (52) is formed with a first latching hook (54) which has a first latching lug (58) hooking behind the base element (16), and a second latching hook (62) which has a first latching lug (58) on the base element (16 ) rear hooking, second detent lug (66), and that the first detent lug (58) is provided on a first detent arm (56) which is designed to be flexible, whereby the first detent lug (58) springs back when rear hooked. Photovoltaic mounting system (10) according to one of Claims 7 until 9 , characterized in that on the floor element (16) a floor pan (80) is attached, which is connected in particular to the floor element (16) by means of a latching connection (52).

Images