WO2018185128A1 - Supporting cable structure for pv modules - Google Patents

Abstract

A supporting cable structure for PV modules (8) is described, which supporting cable structure is supported at considerable height, composed of outer supporting cables (2) which are anchored at corresponding height between columns (1) and which are arranged at the circumference of the area to be built over, and of a multiplicity of transverse cables (3) tensioned between the outer supporting cables (2). According to the invention, the PV modules are fastened in a horizontal or inclined position, directly, or via intermediate frames, on the transverse cables (3), wherein the horizontal tension exerted by the transverse cables on the outer supporting cables (2) is absorbed exclusively by relevant horizontal bending of the outer supporting cables (2).

Description

 Confession

Cable structure for PV modules

The subject invention relates to a cable structure for mounting PV modules at a considerable height above the ground, consisting of outer support cables anchored at a corresponding height between supports which are arranged on the circumference of the surface to be covered and a plurality of transverse ropes, where the PV Modules are attached and anchored between the outer support cables, whereby the force exerted by the transverse cables train is absorbed only by a relevant horizontal deflection of the outer suspension cables.

 The increasing use of photovoltaics worldwide for the production of electricity from renewable energy sources has led to numerous different structures with which fixed PV modules or sun-tracking PV modules are anchored.

 Among the different variants of

T r ag t r u k t e rs which are used depending on the place of use and other framework conditions are also known, which use ropes as supporting elements.

 The specific advantages of slaughtering over rigid structures are mainly the possibility

F iri 1 andan 1 a ge n with comparatively low Expenditure and to be able to span large areas at considerable height with few supports.

As a result, the underlying soil remains largely free of obstruction and therefore can additionally be used for other purposes, e.g. for agriculture or as parking.

 In this concept, known layouts for PV modules usually have a plan view of parallel support cables that are braced at a height of several meters on supports and usually transversely to each other by rigid supports to which the PV modules are fastened are connected.

 Examples of these embodiments are described in the patents CH 699119A1 and EP 2 476 140 B1.

 There is also a concept known in which net-like ropes are provided, however, both the longitudinal and the transverse ropes are anchored independently by supports or other solid structures on the ground, whereby such plants ke ran over the entire circumference of the area to be covered Ve ran have 1 e me nte on the ground. In addition, net-like structures are not suitable for an inclined installation of the PV modules.

The objective of the present invention is to realize the self-propitious concept of a self-propelled crane with a plurality of outer suspension cables, but with the transverse connections between the outer suspension cables for fastening the PV modules exclusively by transverse cables which are either directly or indirectly fastened on both sides only to the outer suspension ropes. In addition, solutions are shown which allow an inclined installation of the PV modules.

 In contrast to known solutions with rigid crossbars as a basis for the PV modules act in this case by the existing in the transverse cables train in addition to the vertical and horizontal forces on the outer suspension cables, which thereby both a vertical and a horizontal

Have sag.

 Due to the horizontal component of the tensile force acting in the outer suspension cables, separate anchoring of the transverse cables to the ground is avoided. All forces occurring in the cable structure are dissipated into the outer suspension cables and from these via the supports, which are located in the corners of the polygonal surface to be covered, into the ground.

 The use of ropes for the realization of the cross connection between the outer support ropes allows compared to versions with rigid crossbeams much larger distances between the outer support cables and has a comparatively small

Material requirements. In addition, the anchoring elements on the ground are limited to a few supports on the outside of the installed surface, which facilitates the use of this surface for additional purposes. The transverse ropes are preferably tensioned in parallel and in pairs between opposite outer suspension cables so that the areas defined by the transverse cables and the PV modules attached thereto are inclined at an angle. The angle can be fixed or changeable for the purpose of uniaxial tracking to the state of the sun.

 Several concepts that can be used to achieve the fixed or variable pitch of PV modules are described below. The outer suspension ropes can be anchored fixedly or movably between the supports and consist of a single rope or a pair of ropes.

 E n g io n g e s e s t i o n ts a r in g

Floor plan approximately a polygon, whose shape and number of corners is given by the location and number of columns. Even irregular polygons are possible.

The simplest and cheapest form of a polygon in this context is the regular rectangle, which is formed by a support in each corner.

Preferably, therefore, the rectangular shape of a plant is considered which thus has 4 supports. The outer suspension cables can connect only part or all of the supports. Several plants according to the invention can be combined laterally and / or in the longitudinal direction to form a unit, by inserting adjacent and adjacent plants on the common side the same supports or outer suspension cables are shared for both systems.

The invention in the explained

For the purpose of the invention, systems with a rectangular ground plan are shown schematically in FIGS. 1 to 9.

 Fig. 1 shows the view of a rectangular system in which in the longitudinal direction on each side only an outer support cable (2) is present which is fixed to the supports (1) anchored.

Fig. 2 and Fig. 3 show the view of rectangular plants in the embodiment, in which on each side 2 u n e r e a n e r de arranged outer support cables (2) are provided.

In the solution of Fig. 1 and Fig. 2, the outer support cables are anchored fixedly at the ends and the orientation of the system is north - south. In the solution according to Fig. 3, the outer support cables are anchored at both ends to pivotal levers (11), wherein at least the levers of one side are motor-driven. The rotation of these levers leads to an opposite movement between the lower and the upper outer support cable (2) and thus to a rotation of the transverse cables (3) and the PV modules (8) existing units. In this case, the plant is preferably oriented in the east-west direction. FIG. 4 applies approximately to all the mentioned embodiments and shows the plan of a rectangular system according to the invention with four supports and that by the pull of the transverse cables caused horizontal deflection of the outer suspension cables.

 Fig. 1 and Fig. 5 show a way of fastening the transverse ropes (3) to the outer supporting cables (2) in which only one outer supporting cable is provided on each side of the system. In this embodiment, the transverse cables (3), which are preferably arranged in pairs, are anchored to a fence (4) which in turn is connected to the outer suspension cables via the tension elements (5) in at least two points (6) whereby the stable position of the PV modules (8) is secured.

The transverse ropes (7) of the transverse ropes on the central part (4) are arranged so that each pair of transverse ropes determines a surface inclined at an angle. As a result, the attached between the upper and the lower transverse cable PV modules (8) are inclined at an angle.

 In addition, for reasons of equilibrium, the cross-sections of the transverse ropes on the cross-section are symmetrical, respectively, (4)

Half below or above the level of the outer suspension cables arranged.

 The stability of the pivotal movement (4) against twisting is achieved in that at least two pairs of transverse ropes are used with this pivoting element as shown in FIG. 5.

Fig. 2 and Fig. 6 show a system or the associated details in which the outer support cables are anchored fix and respectively are present twice in the form that on each side of the system, two parallel outer supporting cables are provided.

 In this case, the transverse cables (3) are anchored directly to the outer support cables (2), namely the upper transverse cable at the upper and the lower transverse cable at the lower outer cable carrier. In this case, the upper and lower wheels (9) are also offset from one another horizontally, whereby the surfaces defined by the transverse cables and the PV modules fastened thereto occupy the constant angle. In addition, the spatial distance between the upper and lower edges of the outer ring is increased in this outer frame

(9) the transverse ropes on the outer support cables kept constant. This is achieved according to the invention by virtue of the fact that the mentioned stress nets (9) are defined by a solid element

(10) be connected to each other.

 Fig. 3 and Fig. 7 show a system or the details relating to the Aus f fuhr f o rm in which on each side of the system 2 parallel, mutually arranged outer support cables are provided which can be moved in opposite directions in the longitudinal direction.

The opposite movement of the lower compared to the upper outer support cables is effected by anchoring them on both sides to a pivotable lever (11), wherein at least one of these levers can be pivoted on each side of the system by motor. The transverse ropes on both sides of a rotatably fixed, cross-shaped

It is attached to the upper and lower outer suspension cables at points (13).

Instead of the pivoting lever and pulleys can be used to which the closed to a ring lower and upper outer suspension cable is performed. (not shown here)

 The negotiation (13) of the

Let's take a look at (12) on the outside

Suspension cables are opposite the

C r a n g e p u n ts of the cross ropes on the

Turning the unit (14) by approx. 90 ° so that the swiveling range of the PV modules covers inclinations from - to +. This swivel range can therefore also be used in addition to tracking the PV modules to the position of the sun to bring them in a horizontal position in storm.

 Another solution with which the units of transverse ropes and PV modules can be pivoted about their horizontal transverse axis is shown in FIG. In this solution, the

Units are anchored on both sides by means of an external wedge, which has a downwardly directed pivoting arm (15) which can be actuated via an adjusting cable (16) within the intended pivoting range.

The Stellseil consists in this case preferably of a closed ring of is performed twice over pulleys that move all the pivot arms (15) in the same direction of rotation when actuated. At least one of the pulleys has a drive in this case. Preferably, this driven pulley is designed as a sprocket and replaced the control cable in the range of the sprocket by a chain.

 Fig. 9 shows a plurality of installations according to e plants of rectangular plan, which are combined into one unit by sharing one and the same supports and outer supporting cables on the coincident side of two installations. The attachment of the PV modules to the transverse cables is basically the same as in the case of individual systems.

 In the illustration according to FIG. 9, the solution was chosen by way of example in which the units of transverse cables and PV modules can be rotated about the horizontal transverse axis by a pivoting arm (15) and an adjusting cable (16) in the range from + to.

Claims

PATENTA SPEECHES Cable structure for PV modules (8) with a plurality of fixed or movable outer sections (2), which are stretched at considerable heights between supports (l) located at the periphery of the surface to be covered, characterized in that the PV modules (8) are direct or over On the opposite side, the outer rests 1 (2) are fastened to each other, and the approximately horizontal tension acting in the square (3) is determined by a relevant one horizontal deflection of the outer support cables (2) is taken and all forces acting in the cable structure forces on the supports (l) are discharged into the ground. Cable support structure according to claim 1 and according to Fig. 1 and Fig. 5 in which the outer support cable (2) for connecting two supports in a fixed anchored single rope is characterized in that the connection between the transverse cables (3) and the outer ragsei. 1 (2) via Z w e m e n e m e n ts (4) the at least 2 groups consisting of the transverse ropes and the attached PV modules are grouped together and that these elements (4) are in turn connected via the Z u 1 (5) on at least 2 crossing points (6) with the outer ones Supporting cables are connected, whereby the transverse cables (3) are anchored to the cir ces (4) in such a way that the PV modules (8) fastened to them are inclined at an angle and the horizontal Center line between the Qu e r s e i e e n (3) is approximately at the level of the outer support cables (2). Cable structure according to claim 1 and Fig. 2 and Fig. 6 in which the connection of each 2 supports by a pair of 2 fixed anchored outer ragsei 1 en (2) is realized which are arranged in a vertical plane parallel to each other and with height distance from each other in that the transverse cables (3) are alternately anchored to the upper and lower outer suspension cables (2) and to each other at a horizontal distance, and thus the PV modules (8) fastened thereto have the inclination, whereby these Inclination is stabilized by a solid bond (10) between the upper and lower edges of the ring (9). Cable structure according to claim 1 and 3 and 7 in which the connection of each 2 supports is realized by a pair of 2 movable outer door segments (2) which are arranged parallel to each other in a vertical plane and at a height apart from each other characterized in that between The lower and the upper outer suspension cable (2) can be generated in opposite directions by the lever (11) to which they are anchored being twisted and the transverse cables connected to the outer suspension cables via a pivoting means 1 (12) (3) also make a turn, the desired Pivoting range from + to - is achieved by the anchoring points of the Que r s e i e (14) on the Z w i s che n e 1 eme n t e n (12) approximately at 90 ° with respect to the edges of the edges (13) of the teeth 1 ee n e (12) on the outside Suspension cables are offset. Cable support structure according to claim 1 and FIG. 8, in which the outer supporting cable (2) for connecting 2 supports in a fixedly anchored single rope) characterized in that consisting of the transverse cables (3) and the attached PV modules (8) Groups at both ends by a Z wich che 1 eme nt rotatably anchored to the outer support cables (2) are where Z wische ne 1 ee nte pivot arms (15) which are actuated via a control cable (16), whereby the PV Modules can be rotated around the horizontal transverse axis. 6. S ei ltragwerk according to claim 1 and Fig. 9 since you rch characterized in that several In accordance with Annexes with a rectangular base, they shall be installed laterally and / or in The longitudinal direction of a unit can be summarized by sharing in adjacent facilities on the common side one and the same supports (1) and to varying degrees the outer support cables (2) for both systems.