EP2724089A2

EP2724089A2 - Assembly of a stand for pv modules

Info

Publication number: EP2724089A2
Application number: EP12780076.1A
Authority: EP
Inventors: Stefan Madlindl; Ludwig Schletter
Original assignee: Schletter GmbH
Current assignee: Schletter GmbH
Priority date: 2011-06-08
Filing date: 2012-06-08
Publication date: 2014-04-30
Also published as: DE112012002400A5; EP2724382A2; WO2012167775A3; DE112012002407A5; EP2724382B1; WO2012167774A3; WO2012167774A2; WO2012167775A2

Abstract

The invention relates to an assembly of a stand for PV modules (25), comprising a holding fixture (1) and a girder (3). The girder (3) can be mounted on a component (2) of the stand by means of the holding fixture (1). This can be carried out rapidly and ergonomically by only one person. To this end, the holding fixture (1) comprises a laterally open bearing seat into which a hinge pin (4) fixed on the girder (3) can be laterally inserted, starting from a position at a distance from the holding fixture (1). In a first pivoting position (P1) of the girder (3) and in a second pivoting position (P2, P2') of the girder (3), rotated in relation to the first pivoting position, the hinge pin (4) fixed to the girder (3) is inserted in the laterally open bearing seat. The girder (3) comprises an abutment surface (8) that can butt up to a blocking surface of the holding fixture (1). The blocking surface is arranged in a region to the rear of the laterally open bearing seat, such that, in the first pivoting position (P1), the hinge pin (4) fixed to the girder (3) can laterally protrude from the laterally open bearing seat, and in the second pivoting position (P2, P2') of the girder (3), a lateral projection of the pin (4) fixed to the girder (3) out of the laterally open bearing seat (5) is blocked by the abutment surface (8) butting up to the blocking surface. The girder can be fixed to the holding fixture in the mounting location in a practical manner without tools and without auxiliary means to be held separately.

Description

Assembly of a stand for PV modules

description

The invention relates to an assembly of a stator for photovoltaic modules and a method for mounting such an assembly.

Photovoltaic modules or short PV modules are usually set up on open terrain by means of a stand.

From DE 10 2008 018 422 A1, such stands are known. Each of these stands comprises a post which is approximately vertically inserted into the ground, a beam which is disposed obliquely above the post, and a support strut with which the beam is supported against the post. The stands are arranged in a row on open ground. Several supporting profiles are attached across the beams of these posts, which in turn support the PV modules. At the upper end of each post a holding attachment is arranged, by means of which the respective beam is tiltably mounted and secured. The retaining attachment contains two closed vertical bearing slots, through which a hinge pin is guided. The hinge pin also leads through a connection piece, which is arranged longitudinally displaceable on the beam. For quick and easy assembly with the support cap two laterally downwardly open bearing slots are included in the connector. So that can not be detached from the holding attachment at lifting loads of the beam including the connector, a separate gate valve is provided. The separate locking slide is inserted into the fitting directly below the hinge pin and blocked in this way lifting the beam.

From DE 10 2008 005 733 A1 a support structure for solar modules is known which also comprises a stand with a vertical post, an oblique beam and a support strut. On the. vertical post is a holding attachment attached to an inclined bearing surface on which the oblique beam rests flat. The oblique beam is attached to the bearing surface of the holding attachment by means of two separate and locally to be set screws against slipping and lifting. DE 10 2009 045 209 A1 shows a stator for PV modules with a similar holding attachment. Here too, at least two separate screws must be used to attach the beam to the retaining attachment on site.

From DE 10 2009 054 250 A1 a control system for a raised solar system is known. The adjusting system comprises a vertical tube as a height-adjustable extension of a vertical post. On the tube, a holding attachment is pivotally mounted, which in turn carries a sloping beam. Unlike the aforementioned systems, the tube and the retaining attachment are already preassembled on the oblique beam, so that the assembly with the post and the height adjustment must take place simultaneously and for this purpose simultaneously to work with both the beam and the tube arranged pivotally thereon is. In practice, this can complicate an exact height adjustment along a guideline or a laser line.

For large-scale photovoltaic systems on open terrain, many such stands are needed. For example, in the well-known German project "Solarpark Lieberose" with an output of 53 megawatts over a total area of 1.6 km ^2, around 50,000 stands of the type mentioned at the outset were installed in 2008. It is understood that apparently small changes have considerable advantages with regard to production costs , Use of materials, material logistics, installation effort, assembly quality and installation safety can offer.

An object of the invention is to develop a stand of the type mentioned, the beam of only one person faster and more ergonomic than before can be mounted on the support post of the stand. The bar should therefore at the place of installation as possible tool-free and can be attached to the holding attachment without separately available aids.

The object is achieved with the assembly of a stator for PV modules according to claim 1. This includes a retaining cap, which is arranged on a component of the stator, a beam which can be arranged by means of the retaining cap on the component, as well as a hinge pin fixed to the beam. The component of the stand may be a post, which may be arranged to remove loads preferably standing in a floor. The component may also be one which is intended to be arranged on such a post, in particular at an upper end thereof. The beam may have a longitudinal extent in a conventional manner and is preferable for supporting a plurality of PV modules or mounting rails therefor. The beam can for this purpose obliquely, that is arranged longitudinally inclined above the post. If mounting rails are provided on the beam, they preferably extend transversely to the beam. The hinge pin may be a commercially available screw with a circular cylindrical shaft. To fix or support the hinge pin, the hinge pin can pass through openings in the beam. Round holes are preferred in which the hinge pin is radially fixed in a simple manner. It is understood that the hinge pin transverse to the longitudinal extent of Beam is directed and can penetrate the beam across completely. An only partial penetration and the provision of two axially aligned hinge pin is also conceivable. In the final assembly state of the stand, the hinge pin can run approximately horizontally.

The retaining attachment contains a laterally open bearing seat in which the hinge pin fixed to the beam can be inserted laterally starting from a position separate from the retaining attachment and to which a pivot axis is assigned. In a first pivot position of the beam and in a rotated about the pivot axis second pivot position of the beam of the beam fixed hinge pin is inserted into the laterally open bearing seat. The retaining cap has a blocking surface, and the beam has a stop surface. It is essential that the stop surface can strike at the blocking surface. The blocking surface is arranged in a region at the rear of the laterally open bearing seat, so that in the first pivot position the hinge pin fixed to the beam can laterally escape from the laterally open bearing seat and in the second pivot position of the beam a lateral escape of the bolt fixed to the beam from the lateral open bearing seat is blocked by abutting the stop surface on the blocking surface.

The beam with the hinge pin defined therein can be fastened to the retaining attachment without the need for separate assistance by only one person, simply by inserting the hinge pin into the laterally open bearing seat and then pivoting it. Tightening a screw or attaching a securing means is not required. With a tens of thousands of mounting such a beam, as is the case with large PV systems, there are considerable advantages in terms of assembly costs, assembly quality and installation safety.

It is understood that in the second pivoting positions, the blocking surface between the bearing seat and the stop surface is arranged and in the first pivot position between the stop surface and the bearing no blocking surface is provided or ends, or at least loses its property to come into contact with the stop face can. The blocking surface may be convexly curved about the pivot axis. Thus, the bar can be arranged end not only in one, but in several second pivot positions with different inclinations and still strike the blocking surface on the stop surface. The curvature of the blocking surface is preferably circular or circular cylindrical, wherein the center or the central axis does not necessarily coincide with the pivot axis of the bearing seat. Sectional circular or circular cylindrical surfaces are also conceivable. The blocking surface can be in another Extending direction to be parallel to the pivot axis. It is further advantageous if a distance of the blocking surface to the pivot axis and a distance of the stop surface are equal to a central longitudinal axis of the bolt fixed to the beam with a suitable tolerance. The tolerance should be smaller than the radius of the hinge pin. Preference is given to tolerances of 1 mm and less. The stop surface is in contrast to the blocking surface preferably flat and / or parallel to a longitudinal direction of the beam extending. Like the blocking surface, the abutment surface may also be parallel to a longitudinal axis of the bolt in a further direction of extent. The stop surface may be continuous along the bar or there may be provided only in sections; especially in the area of the hinge pin fixed to the beam. It is also conceivable to provide the stop surface by means of a separate Bäuteile on the beam. Preferably, the ^'stop surface but rd w mitgefertigt with beams, in particular in an extrusion process.

The component on which the holding attachment is arranged may be a standing post of the stand. In an advantageous embodiment, the component is an adjusting strut, which is intended and suitable to be arranged on a post of the stand adjustable, in particular to be arranged adjustable in angle. This can compensate for misalignment or tilt misalignment of the post. In addition or alternatively, the retaining attachment can be adjustable in the longitudinal direction of the adjusting strut, in particular stepwise. The Justierstrebe may protrude from an upper longitudinal end of the post and be directed upwards, so that a length adjustment along the Justierstrebe essentially means a height adjustment.

It is understood that the beam and the holding attachment with respect to the pivot axis can be fixed axially to each other. In an advantageous embodiment, it is provided that the beam contains an open longitudinal channel and the holding attachment engages in the open longitudinal channel and the stop surface is arranged in the open Längskarial. The open longitudinal channel can be substantially U-shaped and designed as a comparatively wide and deep groove and be continuous along the beam. The open Längskanäl can be bounded laterally by two opposite side walls, between which the holding attachment is fixed on both sides transverse to the beam. The stop surface may optionally limit the depth of engagement of the open longitudinal channel for the retaining cap.

In an alternative embodiment, it is possible that the retaining cap has two cheeks, between which the beam can be arranged. The stop surface can be provided on the outside of the beam and the blocking surface on the cheeks. The laterally open bearing seat may describe the inner surface of a segment of a hollow circular cylinder, wherein the segment has an opening angle in the range between 90 and 220 degrees: segments of a hollow circular cylinder are particularly suitable as a bearing seat for commercial hinge pin. Values for the opening angle of 180 ± 30 degrees are preferred. The opening angle of the segment may be greater than 180 degrees, as there is a suitable clearance between the hinge pin and the bearing seat and the smallest possible lateral opening of the bearing seat has static advantages. For comparable reasons, it is preferred that a starting direction, with which the hinge pin fixed to the beam can escape from the laterally open bearing seat, is directed obliquely downward with an inclination in a range between 5 and 50 degrees.

In an advantageous embodiment, the retaining attachment has a laterally accessible guide surface, which can laterally receive the position of the pivot pin defined on the beam from the position separate from the retaining attachment. The laterally accessible guide surface terminates at the laterally open bearing seat and can laterally guide the hinge pin fixed to the beam to the laterally open bearing seat. The laterally accessible guide surface can facilitate the mounting of the beam on the support cap, that is to say more precisely the lateral insertion of the articulated bolt fixed to the beam into the laterally open bearing seat. It is particularly ergonomic if the laterally accessible guide surface is at least partially concavely curved. But also possible are plane and unsteady guidance surfaces.

The first pivotal position of the beam may be a horizontal position of the beam or a position where the longitudinal end of the beam, which is farther from the pivot pin defined on the beam, is higher than another longitudinal end of the beam. The second pivotal position of the beam may be a position where a longitudinal end farther from the hinge pin fixed to the beam is lower than the other longitudinal end of the beam. Such pivotal positions make the assembly catchy and safe and can make the bearing of the hinge pin in the laterally open bearing seat particularly stable.

It is understood that the retaining cap and the beam within the assembly has a significant importance.

A method of assembling the assembly according to the invention may comprise the steps of: 1. bringing the beam together with the bolt fixed to the beam from the position separate from the holding attachment into the first pivoting position, wherein the one on the Beam fixed bolt is inserted laterally into the laterally open bearing seat. 2. pivoting of the beam about the pivot axis in the second pivot position, wherein the blocking surface and the abutment surface are opposed to each other, so that a lateral escape of the articulated pin fixed to the beam is blocked. During pivoting of the beam in the second pivoting position, a longitudinal end more distant from the pivot pin defined on the beam can reach deeper. During the placement of the beam in the first pivot position, the hinge pin fixed to the beam can be guided laterally on the laterally accessible guide surface to the laterally open bearing seat.

The invention will be explained in more detail with reference to a preferred embodiment with reference to drawings. It shows:

Fig. A1 is a side view of a stand with a beam, which by means of a

Halteaufsatzes arranged on an adjusting strut of the stator and shown in three other positions

Fig. A2 is a detail side view of the stator according to Fig. A1 in the region of

Holding attachment and the beam in a separate position from the Halteeaufsätz

Fig. A3 is a detail view as Fig. A2, but showing the beam in a first pivot position

Fig. A4 is a detail view as Fig. A2, but the beam in a second

Showing swivel position>

Fig. A5 is a detail view like Fig. A2, but the beam in another second

Showing swivel position

Fig. A6 is a front view of the retaining cap and a cross section of the beam according to

Fig. A1 in a horizontal position

The stand for PV modules shown in a side view in Fig. A1 comprises a post 12, which is placed approximately vertically standing in a bottom 22, a beam 3, which is arranged obliquely above the post 12, and a support strut 23, by means of the beam 3 is supported against the post 12. As is well known in the art, several such stands can be placed in a row. A plurality of mounting rails 24 can be arranged transversely on the beams 3 of the posts, which in turn can carry a large number of PV modules 25. Alternatively, the PV modules 25 may also be mounted directly on the beam 3. The bar 3 is shown in dashed lines in Fig. A1 according to the solid lines in a second pivot position P2 and in three other alternative positions: A separate position PO, a first pivot position P1 and an alternative second pivot position P2 '. It is understood that for the alternative second pivot position P2 'ejne the support strut 23 alternative, not shown longer support strut is required.

At an upper portion of the post 12 an adjusting strut 2 is arranged tilt-adjustable. The Justierstrebe 2 is pivotable about a horizontal hinge pin 27 and can be locked in rotation by means of a screw 28 in several different positions on the post 12. The Neigungsversteilbarkeit the Justierstrebe 2 is shown symbolically by means of the double arrow 26 and is provided to compensate for a possible inclination of the post 12. The Justierstrebe 2 is placed in the position shown approximately parallel to the item 12.

At an upper portion of the adjusting strut 2, a retaining cap 1 is arranged vertically adjustable. For this purpose, the retaining attachment 1 can be set stepwise on the adjusting strut 2 in different positions along the adjusting strut 2. As FIGS. A2 to A6 show in detail, the attachment 1 has two holding cheeks 40 lying opposite one another, between which the upper end region of the adjusting brace 2 is accommodated. In addition, a screw 41a / b is provided, which penetrates the Justierstrebe 2 transversely and is radially fixed there in simple round holes. The screw 41a / b also leads through two slots 42 which are contained in the retaining cheeks 40 and directed in the longitudinal direction 14 of the Justierstrebe 2, so that the screw 41a / b is correspondingly displaceable therein. The screw 41a / b also leads through two bearing pieces 43, in which the screw 41a / b is fixed radially in simple round holes. The bearing pieces 43 are arranged on the outer sides of the retaining braces 40 in one of a plurality of positions. For this purpose, in each case a transverse toothing is provided on the inner sides of the bearing pieces 43 and on the outer sides of the retaining cheeks 40, which are in meshing engagement with each other. With clamping of the screw 41a / b, the bearing pieces 43 are held against the outer sides of the retaining cheeks 40. The basic principle of this adjustment is known per se and described in greater detail in DE 20 2008 005 020 U1 and DE 20 2009 003 633 U1 by the applicant.

By means of the retaining attachment 1, the beam 3 is attached to the Justierstrebe 2. The adjusting strut 2, the retaining attachment 1 and the bar 3 belong to an assembly according to the invention. The assembly also includes a fixed to the beam 3 or in other words mounted hinge pin 4. The hinge pin 4 is provided on the bar 3 pre-assembled. The hinge pin 4 can be pre-assembled at a place of erection of the stand. Preferably, however, this is done at the factory, that is, in particular at the production of the beam 3. After assembling the beam 3 with the retaining cap 1, the hinge pin 4 is approximately in a horizontal position.

As can be seen in detail in Fig. A2, the retaining cap 1 includes a laterally open bearing seat 5. The bearing seat 5 is open in the drawing approximately to the left laterally. The designated for the hinge pin 4 and suitable bearing seat 5 is associated with a pivot axis 6, which extends centrally to or in the bearing seat 5. If the hinge pin 4 is inserted into the bearing seat 5, the pivot axis 6 and a central longitudinal axis 10 of the hinge pin 4 with a suitable tolerance of less than 1 mm here are coaxially. The bearing seat 5 describes the inner surface of a segment of a hollow circular cylinder, wherein the segment with respect to the pivot axis 6 has an opening angle of about 200 degrees. The lateral ends of the bearing seat are symbolized by short breaks in the lines. It is also statically advantageous that a starting direction 29, with which the hinge pin 4 can laterally escape from the bearing seat 5 in the first pivot position PI of the bracket 3, is not directed horizontally but at an angle obliquely downward. The angle in this embodiment is about 35 degrees with respect to the horizontal.

In Fig. A2, the beam 3 is shown in the separate position PO. The separate position PO is an initial mounting position, in which the beam 3 and the hinge pin 4 fixed therein are completely separated from the retaining attachment 1. In particular, the retaining cap 1 and the beam 3 in the separate position PO are free of mutual engagement or interlocking and free of mutual contact.

The bearing seat 5 is laterally open and accessible from the outside, that the articulated bolt 4 fixed in the beam 3 can be inserted laterally into the bearing seat 5 starting from the separate position PO of the beam 3. This means that the hinge pin 4 transverse to its longitudinal axis 10 and although the hinge pin 4 is already fixed to the beam 3, can be inserted into the bearing seat 5.

The bar 3 has a strand shape and is designed as an extruded profile. The bar 3 has apart from subsequent processing steps over its entire length a uniform cross section, which can be seen from Fig. A6. There, it can be seen that the cross-section of the blade 3 is largely open and contains an open longitudinal channel 15 bounded by two opposite side walls 33. The open longitudinal channel 15 is provided in the manner of a large longitudinal groove in the beam 3 throughout. It is essential däss upon insertion of the hinge pin 4 in the bearing seat 5 of this longitudinal channel 15 of the beam 3 receives the holding uprights 1. In other words, the holding attachment 1 engages in the longitudinal channel 15 in this process.

In the first pivoting position P1 of the beam 3, the hinge pin 4 fixed to the beam 3 is inserted in the laterally open bearing seat 5, as can be seen in detail in FIG. Characteristic of the first pivot position P1 in this exemplary embodiment is that a longitudinal end 20 of the beam 3 which is farther from the hinge pin 4 is higher in gravity than the opposite other longitudinal end 21.

The beam 3 can be rotated from the first pivot position P1 about the pivot axis 6 to the second pivot position P2, which corresponds to the final assembly position shown in Fig. A1. Characteristic of the second pivot position P2 is that the longitudinal end 20 of the beam 3, which is farther from the hinge pin 4, is lower than its other longitudinal end 21. The beam 3 is inclined in the second pivot position P2 at an angle α of about 45 degrees relative to the horizontal.

From Fig. A4 it can be seen that the hinge pin 4 is also used in this with respect to the first pivot position PI rotated second pivot position P2 of the beam 3 in the laterally accessible bearing seat 5. In order to facilitate insertion, the retaining attachment 1 has a laterally accessible guide surface 18, which can receive the hinge pin 4 fixed to the beam 3 from the position P1 separate from the retaining attachment 1 laterally from the outside. The laterally accessible guide surface ends directly at the bearing seat 5. It is essential that the laterally accessible guide surface 18 can guide the hinge pin 4 fixed to the beam 3 laterally to the bearing seat 5: The guide surface 18 is concavely curved. At a beginning region of the guide surface 18 lying on the right in the drawing, this initially leads downward, so that the hinge pin 4 can gravitate downward in an ergonomic manner due to gravity. The guide surface 18 then leads past a depression, where the hinge pin 4 together with the beam 3 may optionally remain securely in an intermediate position. And finally, the guide surface 18 again leads upwards and steadily into the bearing seat 5.

Of particular importance for the assembly according to the invention is that the retaining attachment 1 has a blocking surface 7 and the beam 3 has a stop surface 8. The stop surface, 8 can strike the blocking surface 7. As particularly illustrated in FIGS. A2 to A4, the blocking surface 7 is arranged in a region 9 radially rearward of the bearing seat 5. Radial means in this context, starting from the pivot axis 6. And backward means a side facing away from the intended for the hinge pin 4 contact surface of the bearing seat 5 side. The region 9 can be seen as the outer end of a circular sector shown in phantom about the pivot axis 6. The blocking surface 7 arranged in the region 9 causes the hinge pin 4 secured to the beam 3 to escape laterally from the laterally open bearing seat 5 in the first pivoting position P1 and to allow lateral deflection of the beam 3 in the second pivot position P2 of the beam 3 Pin 4 is blocked from the laterally open bearing seat 5 by means of abutment of the stop surface 8 to the blocking surface 7.

The blocking surface 7 is convexly curved about the pivot axis 6. You may like the bearing seat 5 at least partially circular cylindrical. It is essential that a distance A1 of the blocking surface 7 to the pivot axis 6 and a distance A2 of the stop surface 8 to the central longitudinal axis 10 of the bolt 4 fixed to the beam 3 are equal with a suitable tolerance. The tolerance should be smaller than the radius of the articulated pin 4 fixed to the beam 3 and is less than 1 nm here.

The blocking surface 7 covers in this embodiment an angle of about 25 degrees with respect to the pivot axis 6 and is arranged such that the beam 3 can be inclined in its second pivot position P2 with solar typical inclinations α between 20 and 45 degrees to the horizontal and in this angular range the stop surface 8 on the blocking surface 7 can strike according to the invention. Other angle ranges are also conceivable. The area 9 to be recognized as a circular sector commences correspondingly at an angle β of 45 degrees and ends at an angle β 'at approximately 70 degrees with respect to the horizontal.

The stop surface 8 on the beam 3 is executed by means of two longitudinal webs 30, which are arranged in the longitudinal channel 15 on the side walls 33. The stop surface 8 is flat and runs parallel to a longitudinal direction 11 of the beam 3. The stop surface 8 can therefore be mitgefertigt with the beam 3 in a simple manner, in particular by means of extrusion. The engagement depth 16 of the longitudinal channel 15 is limited by means of the stop surface 8 for the retaining attachment 1. In an alternative, not shown, the retaining attachment may have two cheeks between which the beam can be arranged. can. The cheeks can then carry the blocking surface. On the beam, the stop surface may be provided outside in this case.

For assembly, the beam 3 is moved out of the holding attachment 1 separate position P1 in the first pivot position P1 together with the pivot pin 3 fixed to the beam 3. In this case, during the introduction of the beam 23 into the first pivoting position P1, the hinge pin 4 fixed to the beam 3 is guided laterally on the laterally accessible guide surface 18 to the laterally open bearing seat 5. In this case, the bolt 4 fixed to the beam 3 is inserted laterally into the laterally open bearing seat 5. Thereafter, pivoting 24 of the beam 3 takes place about the pivot axis 6 in the second pivot position P2. Here, the blocking surface 7 and the abutment surface 8 are set close to each other, so that a lateral escape of the fixed to the beam 3 hinge pin 4 is blocked. Characteristic of the pivoting 24 of the beam in the second pivotal position is that while the fixed to the beam 3 fixed hinge pin 4 farer longitudinal end 20 reaches deeper. It is therefore a downward pivoting of the bar 3.

Hereinafter, additional aspects of the same invention will be explained.

The invention also relates to a stand for photovoltaic modules and to a method for mounting such a stand.

From DE 10 2008 018 422 A1, such stands are known. Each of these stands comprises a post placed vertically in the ground, a beam slanted above the post, and a strut bracing the beam against the post. The stands are arranged in a row on open ground. Several supporting profiles are attached across the beams of these posts, which in turn support the PV modules. When inserting the post in the ground misalignment of the post are inevitable. To compensate for such Fehlstellüngen, the stand on various adjustment options. A joint bolt provided for the beam can be stationarily arranged and adjusted along a reference line before it is joined to the beam. In the connection area between posts and beams, three special molded parts are required for this purpose, two of which are to be mounted and adjusted at the installation site, as well as a total of nine screw connections, of which five must be set and tensioned at the installation site.

From DE 10 2008 005 733 A1 a support structure for solar modules is known which comprises a similar stand with a post and a beam. In the connecting area between posts and beams, there are two special molded parts to be mounted and adjusted at the installation site, as well as a total of four screws, all of which must be set and tensioned on the installation site. From DE 10 2009 045 209 A1 a device for a stand construction is known, which connects a post and a beam with each other. In the connection area two molded parts and seven screws are provided.

From DE 10 2009 054 ^' 250 A1 a control system for a raised solar system is known. The adjusting system comprises a vertical tube as a height-adjustable extension of a post. On the tube a holding attachment is pivotally mounted, which in turn carries a beam. In the connecting area between posts and beams, five screws are provided, of which at least two are to be set and tensioned at the installation site. The tube and the retaining attachment are already preassembled on the sloping beam, so that the assembly with the post and the height adjustment must be done simultaneously. The height of the pivot axis defined by Halteaufsätz can therefore be determined only at the time of installation of the beam. In practice, this can complicate an exact height adjustment along a guideline or a laser line.

For large photovoltaic systems on open terrain, many such stands are needed. For example, in the well-known German project "Solarpark Lieberose" with an output of 53 megawatts over a total area of 1.6 km ^2, around 50,000 stands of the type mentioned at the beginning were installed in 2008. It is obvious that apparently small changes have considerable advantages with regard to production costs , Use of materials, material logistics, installation effort, assembly quality and installation safety can offer.

An object of the invention is to develop a stable stand for PV Mödule that contains as few moldings and screw in the connection area between posts and beams, without sacrificing essential adjustment options. The adjustment along a predetermined reference line should be able to take place before the mounting of the beam as in the aforementioned stand.

The problem is solved with the stand for PV modules specified in claim 1. The stand includes a post that stands and has an upper longitudinal end, a beam that is at least partially disposed obliquely above the post, a support strut by means of which the beam is supported against the post, and an adjustment device in which a first horizontal Hinge pin and a second horizontal hinge pin are mounted and having an adjusting strut. The post may in particular be founded in a ground or arranged on a foundation and preferably consists of a roll-formed Metal profile. The post may be arranged vertically or, for example, perpendicular to an inclined floor. The beam may have a longitudinal extension in a conventional manner and is intended to carry a plurality of PV modules or mounting rails therefor; The beam is inclined for this purpose, that is longitudinally inclined: If mounting rails are provided on the beam, so they preferably extend transversely to the beam. The two hinge bolts, referred to as horizontal, can be commercially available screws with a circular cylindrical shaft. The term horizontal is to be understood as meaning transverse to the upright post, so that depending on the inclination of the post, the hinge pin may be slightly inclined with respect to gravity. A course parallel to a sloping ground or other misalignments, in particular in a range of up to 20 degrees are conceivable.

The Justierstrebe is taken in sections in the post and protrudes from the upper longitudinal end of the post out. To form a hinge connection, the first horizontal hinge pin is supported not only on the adjusting device but also on the post. The Justierstrebe is to compensate for a possible tilt error of the post about this first horizontal hinge pin pivotally locked and rotatably in one of several possible pivot positions on the post. In addition, it is provided that the beam includes an open longitudinal channel bounded by opposite side walls. To form a hinge connection, the second horizontal hinge pin is supported not only on the adjusting device, but also on at least one of the opposite side walls, wherein an imaginary longitudinal axis of the second horizontal hinge pin extends transversely through the open longitudinal channel. The adjustment device engages the open longitudinal channel and is pivotally connected therein with the second horizontal hinge pin and also fixed transversely to the beam by means of the opposite side walls of the longitudinal channel. It is understood that the adjusting device in addition to an adjustment function also has a support function for the beam.

Because of the engagement of the adjusting device in the open Längskänal components can be saved and a statically stable and efficient connection between the adjusting device and the beam can be generated. With the pivoting Justierstrebe a tilt error position of the post can be compensated. Such tilt misalignment is more common in practice and is usually more relevant in magnitude than post height misalignment. In the connecting region between the beam and the post, one or two further screw connections can be provided in addition to the two hinge pins, in particular one for the rotationally fixed locking of the adjusting strut and one for an optional height adjustment of the adjusting device. It is also advantageous that the Adjustment can take place along a predetermined reference line in time before the installation of the beam. For this purpose, the Justierstrebe is to be arranged separately from the beam and with a tilt of the post compensating inclination on the post. The adjustment range can be particularly large, so that the establishment of a. Pfostens with less care is executable. The few components of the stand allow easy production, a high degree of pre-assembly and a small transport volume as well as easy assembly along a reference line.

In a particularly simple embodiment, it is possible that the second horizontal hinge pin is mounted directly on the Justierstrebe, in particular in an upper region thereof. Preferably, however, the adjusting device includes a holding attachment, which is arranged on the Justierstrebe and in which the second horizontal hinge pin is mounted. This can advantageously extend the adjustment and support function of the adjusting device. The holding attachment is expediently arranged on an upper region of the adjusting strut. It is particularly preferred if the holding attachment is arranged to be adjustable in a longitudinal direction of the adjusting strut, which means practically height-adjustable, since the adjusting strut ideally runs parallel to the stationary post in its central position.

It is particularly preferred if a preassembled module is provided at the installation site of the stator, which consists of the adjusting strut and the retaining attachment, wherein the retaining attachment is arranged on the adjusting strut and adjustable in the longitudinal direction of the strut.

In a preferred embodiment, it is possible that for the rotationally fixed locking of Justierstrebe a screw is provided which penetrates the Justierstrebe in a bow hole and stored on the post in bearing pieces, the bearing pieces inserted into openings in the post and there are axially displaceable to the screw and with the Justierstrebe in Reibkraft- and / or positive engagement are. The Reibkraft- and / or positive engagement preferably acts in an area around the bow hole. The screw connection can be in one area. be arranged between the second horizontal hinge pin and the upper longitudinal end of the post and expediently runs parallel to the second horizontal hinge pin.

The stand may have at least one spacer which holds the opposite side walls of the open longitudinal channel and counteracts a change in the distance of the side walls. This can increase the stability of the beam and also avoid deformation of the beam under extreme load. The support strut and the beam can be connected by means of a hinge connection with a third horizontal hinge pin. It is particularly preferred if the third horizontal hinge pin is mounted on at least one of the opposite side walls of the longitudinal channel, wherein an imaginary longitudinal axis of the third horizontal hinge pin extends transversely through the open longitudinal channel and the support strut or a second holding attachment arranged thereon for supporting the third horizontal hinge pin engages in the open longitudinal channel and is fixed transversely to the beam by means of the opposite side walls of the longitudinal channel. Like the retaining attachment on the adjusting strut, the second retaining attachment can be adjustable on the support strut in a longitudinal direction of the support strut.

In a preferred embodiment, the open longitudinal channel on a stop surface on which the adjusting device can strike. For this purpose, it may be provided that the retaining attachment of the adjusting device has a blocking surface, which is arranged at the rear of a laterally open bearing seat for the second horizontal hinge pin and can abut the stop surface.

It is particularly preferred if a preassembled subassembly is provided at the point of contact of the stator, which consists of the beam and the support strut, wherein the beam and the support strut are connected to each other by means of the third horizontal hinge pin. It is essential that for easy transport and / or storage of this assembly, the support strut and the beams are folded. If the third horizontal hinge pin is mounted on at least one of the opposite side walls of the open longitudinal channel, the support strut can easily be folded directly into the open longitudinal channel.

A method for erecting the stand according to the invention with a preassembled assembly of beams and strut may include the following steps: 1. Erection of the post. 2. Arrangement of the adjusting device on the post and adjusting the adjusting device, in particular along a reference line. 3. Arranging the beam on the adjusting device and folding away the support strut from the beam. 4. Position the support strut on the post.

The invention will be explained in more detail with reference to a preferred embodiment with reference to drawings. It shows: Fig. B1 is a side view of a stand with a post and a beam arranged obliquely above

Fig. B2 is a side view of the stand of FIG. B1 with the post in one

misalignment

Fig. B3 is a side view of the stator according to FIG. Bf with the post in one

other misalignment

Fig. B4 is a side view of the stator according to Fig. B1, the beam in different

Showing inclinations

B5 is an exploded view of an adjusting device of the stator according to FIG. B1. B6 is a perspective of a series arrangement of three stands according to FIG. B1

The stand for PV modules shown in a side view in FIG. B1 comprises a post 12 placed vertically in a floor 22, a beam 3, which is arranged obliquely above the post 12, and a support strut 23, by means of which the bar 3 against, the post 12 is supported. As is well known in the art and shown in Fig. B6, a plurality of such stands may be arranged in a row. A plurality of mounting rails 24 can be arranged transversely on the beams 3 of the posts, which in turn can carry a large number of PV modules 25. Alternatively, the PV modules 25 may also be mounted directly on the beam 3.

The stand has an adjusting device 32, which can be seen in detail in an exploded view in Fig. B5. is. By means of the adjusting device 32, among other things, a tilt error position of the post 12 can be compensated. The tilt error position is equivalent to a deviation from a desired position. In the present embodiment, the post 12 should be set exactly vertical as illustrated in FIG. B1. For orientation, a vertical reference 44 and a horizontal reference 45 are shown in dashed lines. In Fig. B2 and Fig. B3 are two extreme, but in practice occurring tilt misalignments of the post 12 illustrated, which are compensated with the adjusting device 32.

The adjusting device 32 includes a Justierstrebe 2 and a retaining cap 1. The Justierstrebe 2 is in the post 12, that is more precisely in a U-shaped longitudinal channel of the post 12 partially received. The approximately U-shaped longitudinal channel 49 is bounded by two opposite side walls 48. The Justierstrebe 2 protrudes from an upper longitudinal end 31 of the post 12 out. The Justierstrebe 2 is thus over the upper longitudinal end 31 of the post 12 over. As indicated by the exploded view in FIG. B5 can be seen in detail, the Justierstrebe 2 has a rectangular hollow cross section. At the adjusting device 32, that is more precisely in two openings 46 of the Justierstrebe 2 is a first horizontal, that is a transverse to the post 12 hinge pin 27 is mounted. The first horizontal hinge pin 27 is also mounted on the post 12 to form a hinge connection, that is more accurate in two simple round holes 47 in the opposite side walls 48. The Justierstrebe 2 is thereby pivotally mounted on the post 12 about a horizontal axis 50. It is essential that the Justierstrebe 2 to compensate for a tilt error position of the post 12 about the first horizontal hinge pin 27 is pivotally locked and rotatably in one of several possible pivot positions on the post 12. In Fig. B1, the Justierstrebe 2 is shown in a central position and can be pivoted in the drawing to the left and to the right and found.

For rotationally fixed locking of the adjusting strut 2, a screw connection 35a / b is provided. The screw connection 35a / b is arranged in a region between the first horizontal hinge pin 27 and the upper longitudinal end 31 of the post 12. The screw 35a / b penetrates the Justierstrebe 2 in two opposite arc holes 51 and is mounted on the post 12 in two round bearing pieces 52. The round bearing pieces 52 are inserted into two round openings 53 in the opposite side walls 48 of the post 12. The round bearing pieces 52 are rotatable in the round openings 53 and with respect to the screw 35a / b on one side axially displaceable. A shoulder 62 on the round bearing pieces 52 prevents them from falling through the circular openings 53 in the U-shaped longitudinal channel 49 of the post 12 from the outside. In addition, the round bearing pieces 52 with the Justierstrebe 2 in a region around the arc holes 51 in Reibkraft- and positive engagement. For this purpose, a simple toothing 54 is provided on the side walls of the Justierstrebe 2, which extends in the longitudinal direction of the Justierstrebe 2. In addition, 52 corresponding teeth 55 are provided on the round bearing pieces. The teeth 54 and 55 engage with each other, wherein the round bearing pieces 52 are rotated in the openings 53 so that their teeth 55 always runs parallel to the teeth 54 on the Justierstrebe 2.

As can also be seen in detail from FIG. B5, the beam 3 contains a downwardly open one. Longitudinal channel 15, which is bounded by two opposite side walls 33. The longitudinal channel 15 is substantially U-shaped in cross-section. In the longitudinal channel 15 also two longitudinal webs 30 are included, which each have a stop surface 8 on their sides directed towards the retaining attachment 1. At an upper portion of the Justierstrebe 2 of the retaining attachment 1 is arranged, which is part of the adjusting device 32. In the half-tower 1 superimposed a second horizontal, that is to the post 12 transverse hinge pin 4. To form a hinge connection, the second hinge pin 4 is also mounted on the two opposite side walls 33 of the beam 12. For this purpose, in the opposite side walls 33 two non-closer passage openings are included, in which the second horizontal hinge pin 4 is fixed radially. It is essential that an imaginary longitudinal axis 10 of the second horizontal hinge pin 4 extends transversely through the open longitudinal channel 15 and the retaining attachment 1 for receiving the second horizontal hinge pin 4 engages in the .Open longitudinal channel 15 of the beam and hinged therein with the second horizontal hinge pin 4 is. The retaining attachment 1 is also defined by means of the opposite side walls 33 of the longitudinal channel 15 transversely to the beam 3.

For supporting the second horizontal hinge pin 4 in the retaining attachment 1, the retaining attachment 1 contains a laterally open bearing seat 5. The second horizontal hinge pin 4 can be introduced laterally into the laterally open bearing seat 5 along a guide surface 18. For this purpose, the second horizontal hinge pin 4 can already be mounted pre-mounted on the beam 3. The bar 3 can thus be spent starting from a completely separate position on the Hälteaufsatz 1, including the hinge pin 4 already set thereon, while the hinge pin 4 are inserted into the bearing seat 5. By means of a pivoting of the beam 3, the hinge pin 4 can be prevented from escaping from the bearing seat 5. For this purpose, a blocking surface 7 is provided on the holding attachment, which can abut against the stop surface 8 in the positions of the beam 3 according to FIG. B1 to FIG.

The retaining attachment 1 can be fixed stepwise to the adjusting strut 2 in different positions along the adjusting strut 2. As a result, additional height misalignments of the post 12 can be compensated. The retaining attachment 1 has two mutually opposite retaining cheeks 40, between which the upper end region of the Justierstrebe 2 is added. It is a screw 41a / b provided, which penetrates the Justierstrebe 2 transversely and is radially fixed there in simple round holes. The screw 41a / b also leads through two slots 42 which were in the retaining cheeks 40 and are directed in the longitudinal direction of the Justierstrebe 2, so that the screw 41a / b is correspondingly displaceable therein. The screw 41a / b also leads through two angular Lagerstüeke 43, in which the screw 41a / b is fixed radially in simple round holes. The angular bearing pieces 43 are arranged on the outer sides of the retaining cheeks 40 in one of a plurality of positions. For this is on the inner sides of the bearing pieces 43 and on the outer sides of the retaining cheeks 40 each provided a transverse toothing, which are in meshing engagement with each other. With clamping of the screw 41a / b, the bearing pieces are held against the outer sides of the retaining cheeks 40. The basic principle of this adjustment is known per se and described in greater detail in DE 20 2008 005 020 U1 and DE 20 2009 003 633 U1 by the applicant.

As is further apparent from FIGS. B1 to B4, the support strut 23 and the beam 3 are articulated by means of a hinge connection 56. The hinge joint 56 includes a third horizontal Gelenkbpizen 57. The third horizontal hinge pin 57 is like the second horizontal hinge pin 4 in two simple round holes ^ stored in the opposite side walls 33, wherein an imaginary longitudinal axis of the third horizontal hinge pin 57 also across the open longitudinal channel 15th runs. On the support strut 23, a second holding attachment 58 is arranged, which engages as the retaining attachment 1 on the Justierstrebe 2 for supporting the third horizontal hinge pin 57 in the downwardly open longitudinal channel 15 and, by means of the opposite side walls 33 of the longitudinal channel 15 transverse to the bar. 3 is fixed. The second retaining cap 58 is gradually adjustable in the longitudinal direction of the support strut 23 analogous to the retaining cap 1 and the Justierstrebe 2. As Fig. B4 illustrates the inclination of the beam 3 with respect to its position 3 'according to FIG. B1 by means of height adjustment 14 of the retaining cap 1 along Adjustment strut 2 and adjusted by means of length adjustment 63 of the second retaining attachment 58 along the support strut 23. In the illustrated position of the beam 3, the retaining attachment 1 is maximally upwards and the second attachment attachment 58 is set maximally inward.

At its other end, the support strut 23 is connected to the post 12 by means of a hinge connection 60. The hinge joint 60 includes a fourth horizontal hinge pin 59. The four horizontal hinge pins 27, 4, 57 and 59 are parallel to each other with the first hinge pin 27 higher than the third hinge pin 57 and the fourth hinge pin 59 the deepest and second hinge pins 4 of FIG highest is. As FIGS. B2 and B3 schematically illustrate laterally to the left of the stand, the four horizontal hinge pins 27, 4, 57 and 59 enclose a planar quadrangle or tetragon 61. The calibration adjustment of the adjusting strut 2 takes place in the plane of the planar tetragon 61. The tetragon 61 only reduces to a triangle in the case when the first hinge pin 27, the second hinge pin 4 and the fourth hinge pin 59 in a plane or in the side view in lying on a line.

Not further shown is that a plurality of spacers are provided which hold the free ends of the opposite side walls 33 of the open longitudinal channel 15 and 20

thereby counteract a change in the distance of the side walls 33. Such spacers may define the side walls 33 unidirectionally or bidirectionally, so that tensile and / or compressive forces can be transmitted between the side walls 33.

Finally, Fig. B6 shows how a plurality of such stands are arranged in a row. The adjusting devices 32 of the stands compensate for any inclination and / or height misalignments of the posts 12 and are ideally adjusted such that the pivot axes 6 of the bearing seats 5 of the retaining lugs 1 of all stands are aligned with a reference line R. Currently only the post 12 is erected from the first column of the series and the alignment assembly 32 is located thereon. The associated adjusting device 32, that is, more precisely, the pivot axis 6 of the bearing seat 5 of the holding attachment 1 is already aligned along the reference line R. The associated beam 3 is not mounted yet and lies on the ground 22. The lying on the ground beam 3 belongs to a preassembled module consisting of the beam 3 and the support strut 23, wherein the beam 3 and the support strut 23 by means of the third horizontal hinge pin 57 are already interconnected and for transport and / or storage of the assembly, the support strut 23 is folded towards the bar 3: It is also essential that the second hinge pin 4 already on the beam 3, that is more accurate in the opposite side walls 33 of the open longitudinal channel 15 is stored.

Claims

claims

1. assembly of a stator for PV modules,

- With a holding attachment (1) which is arranged on a component (2) of the stator,

- With a beam (3) by means of the retaining cap (1) on the component (2)

can be arranged

- With one on the beam (3) fixed hinge pin (4), wherein

the holding attachment (1) contains a laterally open bearing seat (5) into which the hinge bolt (4) fixed to the beam (3) can be laterally inserted starting from a separate position (PO) from the attachment attachment (1) and which has a pivot axis (6 ), and

- In a first pivot position (PI) of the bar (3) and in a to the

Pivot axis (6) rotated second pivot position (P2, P2 ') of the beam (3) is provided, that the beam (3) fixed hinge pin (4) in the laterally open bearing seat (5) is inserted, and

- The attachment (1) has a blocking surface (7), and the beam (3) has a

, Stop surface (8) which can abut against the blocking surface (7), and

- The blocking surface (7) in a region (9) rearwardly of the laterally open bearing seat (5) is arranged, so that in the first pivot position (P1) on the beam (3) fixed hinge pin (4) from the laterally open bearing seat (5 ) can escape laterally and in the second pivot position (P2, P2 ') of the beam (3) a lateral escape of the bolt (4) fixed to the beam (3) from the laterally open bearing seat (5) by abutment of the stop surface (8). is blocked at the blocking surface (7).

2. Assembly according to the preceding claim, characterized in that a distance (A1) of the blocking surface (7) to the pivot axis (6) and a distance (A2) of the stop surface (8) to a central longitudinal axis (10) of the beam (3)

fixed bolt (4) are equal to a tolerance.

3. Assembly according to one of the preceding claims, characterized in that the blocking surface (7) about the pivot axis (6) is convexly curved.

4. Assembly according to one of the preceding claims, characterized in that the stop surface (8) is flat and / or parallel to a longitudinal direction of the beam (3).

5. Assembly according to one of the preceding claims, characterized in that the component (2) is an adjusting strut (2), which is determined and adapted to be arranged to be adjustable on a post (12) of the stator.

6. Assembly according to the preceding claim, characterized in that the Justierstrebe (2) is determined and is suitable to be arranged tilt-adjustable on the post (12) and / or that the holding attachment (1) in the longitudinal direction (14) of the Justierstrebe (2 ) is adjustable.

7. Assembly according to one of the preceding claims, characterized in that the bar (3) includes an open longitudinal channel (15) and the retaining cap (1) engages in the open longitudinal channel (15) and the stop surface (8) in. The open longitudinal channel (15) is arranged.

8. Assembly according to one of the preceding claims, characterized in that the holding attachment comprises two cheeks between which the beam can be arranged.

9. Assembly according to one of the preceding claims, characterized in that the laterally open bearing seat (5), the inner surface of a segment (5) of a hollow

Circular cylinder describes, wherein the segment (5) has an opening angle in the range between 90 and 220 degrees.

10. Assembly according to one of the preceding claims, characterized in that a starting direction (29) with which the on the beam (3) fixed hinge pin (4) from the laterally open bearing seat (5) can escape, with a slope in one area between 5 and 50 degrees obliquely downwards.

11. Assembly according to one of the preceding claims, characterized in that the retaining attachment (1) has a laterally accessible guide surface (18) which determines the hinge pin (4) fixed to the beam (3) starting from the position separate from the retaining attachment (1) ) can receive laterally and ends at the laterally open bearing seat (5) and which can guide the articulation bolt (4) fixed to the beam (3) laterally to the laterally open bearing seat (5).

12. Assembly according to one of the preceding claims, characterized in that the laterally accessible guide surface (18) is concavely curved at least in sections.

13. Assembly according to one of the preceding claims, characterized in that the first pivot position (PI) is a horizontal position of the beam (3) or is a position at which one of the beam (3) fixed hinge pin (4) distant longitudinal end (20) of the beam (3) is higher than another longitudinal end (21) of the beam (3).

14. Assembly according to one of the preceding claims, characterized in that the second pivot position (P2, P2 ') is a position in which a to the beam (3) fixed hinge pin (4) distant longitudinal end (20) is lower than the other longitudinal end (21) of the beam (3).

15. retaining attachment (1) and / or beam (3) of an assembly according to one of the preceding claims.

16. A method of assembling the assembly according to any one of claims 1 to 13, comprising the steps of:

- Bringing (23) of the beam (3) together with that on the beam (3) specified

Bolt (4) from the holding attachment (1) separate position (PO) in the first

Pivot position (P1), wherein the bolt (4) fixed to the beam (3) is inserted laterally into the laterally open bearing seat (5),

- Swiveling (24, 24 ') of the beam (3) about the pivot axis (6) in the second

Pivot position (P2, P2 '), wherein the blocking surface (7) and the abutment surface (8) are opposed to each other, so that a lateral escape of the beam (3) fixed hinge pin (4) is blocked.

17. The method according to the preceding claim, characterized in that during the pivoting (24, 24 ') of the beam (3) in the second pivot position (P2, P2') to the on the beam (3) fixed hinge pin (4 ) more distant longitudinal end (20) reaches deeper.

18. The method according to any one of the two preceding claims, characterized in that during the placement (23) of the beam in the first pivot position (P1) of the beam (3) fixed hinge pin (4) on the laterally accessible guide surface (18) laterally to the laterally open bearing seat (5) is guided.