WO2016156382A1

WO2016156382A1 - Mounting system and mounting method

Info

Publication number: WO2016156382A1
Application number: PCT/EP2016/056899
Authority: WO
Inventors: Georg Schöll
Original assignee: Georg Schöll
Priority date: 2015-03-30
Filing date: 2016-03-30
Publication date: 2016-10-06
Also published as: DE102015004046B4; DE102015004046A1

Abstract

The invention relates to a mounting system for the installation of photovoltaic modules (8) in open spaces, comprising at least two stands (10) each having a post (2) that can be anchored in the ground at one end, on the other end of which a respective bearing rail (6) can be secured such that is is inclined towards the horizontal, wherein the bearing rail (6) is supported on the post (2) via a strut (5), as well as comprising photovoltaic modules (8), each of which has a module frame (9) and which can be positioned on adjacent stands (10). A respective detent connection is formed between the post (2) and the bearing rail (6), as well as between the post (2) and the strut (5), the detent connection being created in such a way that the bearing rail (6) and the strut (5) can be locked on the post (2) without a screw connection. The invention also relates to a mounting method.

Description

Mounting system and mounting method The invention relates to a mounting system for installing

Photovoltaic modules on open spaces, with at least two uprights, each comprising a one-anchored in the ground post, at the other end in each case a support rail inclined to the horizontal fastened, the support rail is supported on the post by a strut, and each having a module frame

Photovoltaic modules that can be attached to adjacent posts.

Furthermore, the invention relates to an assembly method for a

Photovoltaic module array.

Such mounting systems occur especially in systems

Open spaces for use but also on roofs. In the case of large systems in particular, several tens of thousands of carriers are often used, so that there is a need to make them as simple as possible in order to reduce the number of components used and the use of materials. In addition to the lowest possible manufacturing cost of the components must be ensured by the mounting system and that the installation of the

Photovoltaic modules can be done by untrained personnel as possible to such area systems especially in emerging markets can be used in which such specialists are often not available in sufficient numbers.

Usually, in the systems hitherto on the market, the posts are rammed into the ground and then at this post more

Profile rails screwed. Thereafter, cross rails are screwed on and attached to the photovoltaic modules. For this purpose, the

Photovoltaic modules are usually bolted to the profile rails with terminal screws and screw hooks. However, it requires a lot of time for assembly. In addition, since the photovoltaic modules are bolted firmly to the substructure, movements of the substructure, e.g. By lowering or rejecting the soil, the modules made of glass partially considerable wound and thus claimed significantly. Also at

Thermal expansion can not avoid the firmly clamped and bolted modules. A resulting breakage of the modules can not be ruled out and occurs in regions with high levels

Temperature fluctuations often before. The high cost of materials through the use of longitudinal and transverse rails is often the reason why the mounting system is too expensive and a photovoltaic installation does not cost more economically. Just because renewable energy

Photovoltaic systems must be even cheaper in order to remain economical, therefore, cost-cutting measures in material and working hours are essential.

From the prior art mounting systems of the type mentioned above are already known, for example from WO 2012/167774 A2, in which the support rail and the strut in each case by a hinge connection with the Post are connected. However, these joints require extensive preparation work of the individual components and also have the disadvantage that the hinge pins are bolted, creating the risk that they loosen over time and the

Articulated connection releases. Also, in the case of the device known from WO 2012/167774 A2, a very complicated adjusting device has to be used

be kept ready. In addition, with the joints always has the disadvantage that a mobility of the components in the assembled state relative to each other can only be prevented by complex measures, which is the risk of failure of the

Photovoltaic modules brings with it.

A mounting system of the aforementioned type is also known from EP 2 109 152 A2. Here also joint connections are used, whereby the used joint parts by

Screw connections consuming on the post, the strut and the support rail must be attached, so that hereby

associated preparatory work are very complex. In addition, there are also the disadvantages discussed above with regard to the mobility of the components in the assembled state. The part of the invention relating to the mounting system is therefore based on the object of reducing the abovementioned disadvantages. It is another object of the present invention, an assembly method

provide.

The mounting system part of the problem is solved according to the invention in a mounting system of the type mentioned in that between the post and the support rail and between The post and the strut are each formed a latching connection, which is such that the support rail and the strut on the

Posts can be locked screwless.

This makes it possible to mount the stand of the mounting system only by connectors, which can significantly reduce the number of components used and the assembly cost. In addition, it is ensured by the latching connection that the components are firmly locked to the post, whose mobility in the assembled state is thus completely excluded. Due to the mounting system according to the invention, the assembly time for stand and module assembly reduces to about 20% of the time previously required. The material costs for the new quick-assembly system are reduced compared to conventional mounting systems to 60% of the previous cost. Due to the very few parts is a very economical production and low storage possible which saves further costs.

It has also proven to be good if the post a lower

Lock plate for locking and securing the strut and an upper lock plate for locking and securing the support rail is assigned. Through the use of the lock plates, the strut and the support rail can be easily attached to the post and locked, in particular, the post can be factory-fitted with the lock plates, resulting in the assembly and

Logistics costs significantly reduced.

It has also been shown to be advantageous if the upper lock plate is assigned a securing nose, which is inserted into a corresponding receptacle in FIG engages the support rail. As a result, the position of the support rail is fixed and secured to the post.

In addition, it has proved to be particularly favorable if a tongue is formed on the strut and can be introduced into a securing opening formed on the lower lock plate. This provides a simple way to couple the strut with the lock plate. In this

In addition, it has also proven particularly useful if the tongue has a guide portion and at least one securing portion, wherein the securing portion is mechanically deformable.

This makes it possible to fix the strut after insertion into the lower lock plate at this, by the at least one

Secured portion is mechanically deformed. In this regard, it is also provided in the context of the invention that the at least one

Secured portion is predefined by a weakening of material on the tongue.

In order to facilitate the transport to the installation site, it has proven to be advantageous if the strut is pivotally mounted on the support rail. Thus, the strut and the support rail can be transported together as a unit and then brought in the mounting location in the proper alignment with each other. In this context, it has also proved to be particularly favorable when the connection between the

Support rail and the strut is realized by a rivet connection. This is easy to manufacture and provides the required stability.

In order to further simplify the transport of strut and support rail, it has also proven to be useful if the strut is designed such that it can be arranged colinearly to the support rail. This is it possible, the pivotally mounted on the support rail strut for transport collinear - so aligned - to adjust the support rail, whereby the handling is significantly improved.

It has also proven to be advantageous if the support rail has a U-shaped cross section and the legs of the U-shaped

Cross-section one backup contour and a support surface

assigned. The U-shaped design of the support rail ensures a very high stability. In addition, the photovoltaic modules can be safely placed on the bearing surfaces and then attached to the securing contour. The fuse contour and the base of the U-shaped

Support rails also serve as cable channels for the photovoltaic module contacting cable.

As low it has also been proven when on the support rail

Locking holes are formed for receiving the

Photovoltaic modules securing spring clips. By the spring clips, it is particularly possible to mount the photovoltaic modules without screws on the support rail, which significantly reduces the installation effort. A particularly simple and secure fastening of the photovoltaic modules can be achieved in particular if the

Locking holes are formed as slots in the fuse contour. The spring clips can then surround the module frame and the support surface and with a securing bar in the

Engage the fuse opening.

In order to compensate for temperature fluctuations, which may possibly lead to damage of the photovoltaic modules, it has also proven useful when the securing holes and the spring clips such are dimensioned such that a residual mobility of the secured on the support rail photovoltaic modules is guaranteed. The photovoltaic modules are therefore not connected as firmly as possible to the stand, but with play in the range of several millimeters. The amount of material used can be reduced in particular by the fact that the support rails adjacent stands by the

Module frame of the photovoltaic modules are connected. Thus, it is possible to dispense with additional connections between adjacent stands. By using the special fastening with the spring clip in conjunction with the rigid module frame assembly tables can be built with a theoretically infinite length because of the missing cross bars no addition of

Thermal stress can occur.

It has also proven to be particularly advantageous if the upper one

Lock plate and the lower lock plate are welded or crimped to the post. This presents simple possibilities that

Lock plates to attach to the post. The post can have a U-shaped cross-section, whereby the required material can be reduced. The stability of the post can also be further increased by the fact that the lock plates cover the open side of the U-shaped post and are attached to the post legs.

The part of the object relating to the method is solved according to the invention by a mounting method comprising the steps:

- Anchoring of several posts at equidistant intervals in the ground, - Securing and locking of each support rails on an upper lock plate of the post, Securing and locking a strut connected to the support rail to a lower lock plate of the post,

- Connection of adjacent support rails with a photovoltaic module,

- Secure the photovoltaic module to the support rail

Spring clips, and

- Electrical contacting of the individual photovoltaic modules.

The method according to the invention provides a very fast method by which the resources used can also be reduced.

In the following the invention will be explained in more detail on an exemplary embodiment shown in the drawings; show it:

Fig. 1 is a perspective view of an installed

mounting Systems

2 is a perspective view of a stand of a

Mounting system

3 shows a detailed view of a support rail of the mounting system

4 shows a detailed view of an upper lock plate

5 shows a detailed view of a lower lock plate, and

6 shows a detailed view of the connection of the lower lock plate with a locked strut. Figure 1 shows a mounting system 1, which consists essentially of six different parts, which are preferably made of galvanized

Sheet steel profile can be produced inexpensively by roll profile process. In detail, these are: a post 2, which can be anchored in the ground, an upper lock plate 3, a lower lock plate 4, which are both attached to the post 2, a strut 5, a support rail 6 and spring clips 7, with the help of photovoltaic modules 8 on the

Support rails 6 can be fixed by the spring clips 7 engage in the module frame 9 of the photovoltaic modules 8. The post 2 with the lower lock plate 4 and the upper lock plate 3, the

Support rail 6 and the strut 5 thereby form a stand 10. On the support rail 6 adjacent stand 10 can then each

Photovoltaic modules 8 placed and secured by four spring clips 7. In the present embodiment, in each case three photovoltaic modules 8 are arranged between two adjacent uprights 10, the narrow side of the photovoltaic modules resting on 8 of the support rail 6. The row of adjacent stands 10 can be continued arbitrarily far. The upper lock plate 3 and the lower lock plate 4 are in the embodiment shown on the post. 2

welded. As a result, the degree of the sun angle is fixed. In an alternative embodiment, which is not shown in the drawing, the upper lock plate 3 and the lower

Lock plate 4 crimped to the post 2. The pre-fabricated post 2 in the factory can either rammed into the ground or - as in the embodiment shown - are poured into concrete foundations 1 1. The strut 5 is secured in the embodiment shown in the figure 1 to the support rail 6 by a rivet 12, wherein the

Rivet 12 is configured so that the strut 5 can be pivoted relative to the support rail 6. The support rail 6 is locked in place with the opening provided in the upper lock plate 3 and locked there. The free end of the strut 5 is now inserted into the lower lock plate 4 and locked there, as will be explained below with reference to Figures 5 and 6 in more detail. Since the entire stand 10 can be made without any screw enormous time savings is possible.

The support rail 6 is designed such that, together with the spring clip 7 developed for this purpose, a secure connection between the photovoltaic modules 8 and the support rails 6 can be produced.

The spring clip 7 is designed such that it surrounds the module frame 9 of the photovoltaic module 8 and in a designated

Securing opening 13 in the support rail 6 dipping or can snap. This results in a positive attachment of the

Photovoltaic module 8, but this gives at the same time enough opportunity to move in thermal expansion. By the form-fitting

Connection is a safe and stable construction created which very quickly only with a percussion tool, preferably a

Rubber mallet can be made. The photovoltaic modules 8 used for this mounting system 1 are provided with a particularly high-strength and rigid module frame 9 which can directly absorb the static forces such as wind and snow load. By attaching the photovoltaic modules 8 with the spring clips 7 in conjunction with the rigid module frame 9 can be dispensed with the use of additional cross rails between adjacent uprights 10, which means a significant material savings. FIG. 2 shows a single stand 10 of the mounting system 1. On the post 2, which has a U-shaped cross-section, is at its upper end the upper lock plate 3 can be seen, in which the support rail 6 can be secured. It can be seen that the support rail 6 has a U-shaped cross-section, at the legs 14 each one

Security contour 15 and then a support surface 16 is attached to the photovoltaic modules 8 can be placed. At the securing contours 15 of the U-shaped support rail 6, the slot-shaped securing openings 13 are formed, in each of which a securing web 17 of the spring clips 7 engages the

Photovoltaic modules 8 secure. The support surface 16 also has a limiting section 18, which is arranged perpendicular to the support surface 16 and prevents the photovoltaic modules 8 from slipping off the support rail 6 during assembly. The strut 5 is mounted in the embodiment shown by a rivet 12 pivotally mounted on the support rail 6. The strut 5, which is shown in the

Embodiment is attached to the outside of the U-shaped support rail 6, is also designed so that it can be pivoted about the support rail 6 for transport to the installation site, so that in this way the space requirement is reduced.

Figure 3 shows a detailed view of the support rail 6, with two resting on the support surfaces 16 photovoltaic modules 8. The figure 3, the limiting sections 18 are shown, which limit the support surfaces 16. The photovoltaic modules 8 are secured by the spring clips 7, which engage on the one hand in the module frame 9 of the photovoltaic modules 8 and engage around the support surface 16 around with the securing web 17 in the securing holes 13, which are formed in the securing contour 15. The spring clip 7 dives into the securing contour 15, so that the securing web 17 from the legs 14 pioneeringly engages in the securing opening 13. The spring clips 7 are so dimensioned that the thus secured photovoltaic modules 8 have sufficient clearance to compensate for any temperature fluctuations can occur.

FIG. 4 shows a detailed view of the upper lock plate 3 and the area of the post 2 to which the upper lock plate 3 is fastened. In the upper lock plate 3, a securing lug 19 is formed, which engages during assembly in a corresponding opening which in the

Support rail is formed. In addition, the post 2 on the opposite side of the upper lock plate 3, a guide receptacle 20 on which the support rail can be placed. Furthermore, it can be seen in FIG. 4 that the post 2 has a U-shaped cross section, the post leg 21 having a local reinforcement 22.

Figure 5 shows a detailed view of the post 2 in the region of the lower lock plate 4, in which the strut 5 is inserted. The strut 5 has a tongue 23 which can be inserted into a corresponding opening 24 which is formed in the lower lock plate 4. In addition, the strut has two pins 25 which engage in the assembly in corresponding pin receivers 26 which are formed in the lower lock plate 4. As can be seen from Figure 6, the tongue 23 has a

Guide portion 27 and two securing portions 28 which are bent after insertion of the tongue 23 in the opening 24 mechanically towards the bottom. Thus, the stand 10 is fixed and fixed position of the support rail 6 and the strut 5 relative to the post 2. The assembly method according to the invention will be described again below. First, the provided with an upper lock plate 3 and a lower lock plate 4 posts 2 are anchored in the ground and indeed at equidistant intervals. In a second step, the support rail 6 is inserted into the securing lug 19 of the upper lock plate 3 and then the strut 8 with the lower lock plate 4th

connected. In this case, the pins 25 which are arranged on the strut 5, inserted into the pin receivers 26 of the lower lock plate 4. At the same time, the tongue 23 is inserted into the opening 24 which is formed in the lower lock plate 4. After that, the

Secured portions 28 of the tongue 23 mechanically deformed and deformed downwards in the direction of the bottom. As a result, then the strut 5 is secured to the lower lock plate 4. Then the photovoltaic modules 8 are placed on the bearing surfaces 16 of the support rail 6 and secured there with the spring clips 7, the securing webs 17 in the

Locking holes 13 engage, which are formed in the securing contour 15.

LIST OF REFERENCE NUMBERS

1 mounting system

2 posts

3 upper lock plate

4 lower lock plate

5 strut

6 support rail

7 spring clip

8 photovoltaic module

9 module frames

10 stands

1 1 concrete foundation

12 riveted connection

13 securing opening

14 thighs

15 securing contour

16 contact surface

17 securing bar

18 limiting section

19 safety nose

20 guide shot

21 post legs

22 reinforcement

23 tongue

24 opening

25 cones

26 journal receptacle

27 guide section

28 securing section

Claims

claims:

1 . Mounting system for installation of photovoltaic modules (8)

Open spaces, with at least two uprights (10), each of which comprises a post (2) which can be anchored in the ground, at the other end in each case a support rail (6) can be fastened inclined to the horizontal, the support rail (6) being fastened to the post (2) is supported by a strut (5), and each having a module frame (9) having photovoltaic modules (8) which are attachable to adjacent uprights (10), characterized in that between the post (2) and the support rail (6) and between the post (2) and the strut (5) in each case a latching connection is formed, which is such that the support rail (6) and the strut (5) on the post (2) can be locked without screwing.

2. Mounting system according to claim 1, characterized in that the post (2) is associated with a lower lock plate (4) for locking and securing the strut (5) and an upper lock plate (3) for locking and securing the support rail (6).

3. Mounting system according to claim 2, characterized in that the upper lock plate (3) is associated with a securing lug (19) which engages in a corresponding receptacle in the support rail (6).

4. Mounting system according to claim 2 or 3, characterized in that on the strut (5) a tongue (23) is formed, which is insertable into an opening (24) formed on the lower lock plate (4).

5. Mounting system according to claim 4, characterized in that the tongue (23) has a guide portion (27) and at least one

Secured portion (28), wherein the securing portion (28) is mechanically deformable.

6. Mounting system according to one of claims 1 to 5, characterized

characterized in that the strut (5) is pivotally mounted on the support rail (6).

7. Mounting system according to claim 6, characterized in that the connection between the support rail (6) and the strut (5) by a rivet connection (12) is realized.

8. Mounting system according to claim 6 or 7, characterized in that the strut (5) is designed such that these collinear to the

Support rail (6) can be arranged.

9. Mounting system according to one of claims 1 to 8, characterized

characterized in that the support rail (6) has a U-shaped

Cross-section and the legs (14) of the U-shaped

Cross section is assigned in each case a securing contour (15) and a bearing surface (16).

10. Mounting system according to one of claims 1 to 9, characterized

characterized in that on the support rail (6) securing openings (13) are formed, for receiving the photovoltaic modules (8) securing spring clips (7).

1 1. Mounting system according to claim 10, characterized in that the securing openings (13) and the spring clips (7) in such a way

are dimensioned that a residual mobility of the at

Support rail (6) secured photovoltaic modules (8) is guaranteed.

12. Mounting system according to one of claims 1 to 1 1, characterized

in that the support rails (6) of adjacent uprights (10) are connected by the module frames (9) of the photovoltaic modules (8).

13. Mounting system according to one of claims 1 to 12, characterized

characterized in that the upper lock plate (3) and the lower

Lock plate (4) with the post (2) are welded or crimped.

14. Installation procedure for installing photovoltaic modules (8) on

Open spaces, including the steps:

- anchoring several posts (2) at equidistant intervals in the ground,

- Securing and locking of a respective support rails (6) on an upper lock plate (3) of the post (2),

- securing and locking one with the support rail (6)

connected strut (5) on a lower lock plate (4) of the post (2),

- Connection of adjacent support rails (6) with a

Photovoltaic module (8),

- Securing the photovoltaic module (8) on the support rail (6) Spring clips (7), and

- Electrical contacting of the individual photovoltaic modules (8).