Large-span semi-flexible photovoltaic support and connecting node thereof

Abstract

The large-span semi-flexible photovoltaic support comprises a longitudinal beam, a semi-flexible connecting part and support supports arranged at the two ends of the longitudinal beam, one end of the semi-flexible connecting part is fixedly connected with the support supports, and the other end of the semi-flexible connecting part is connected with the support supports on the opposite side through a tension structure. One end of the longitudinal beam supporting piece is fixedly connected with the longitudinal beam, and the other end of the longitudinal beam supporting piece is connected with the semi-flexible connecting part through the connecting node assembly; and pretension is applied to the semi-flexible connecting part through the tension structure, so that axial pressure is provided for the longitudinal beam supporting piece, and the longitudinal beam supporting piece supports the longitudinal beam. According to the large-span semi-flexible photovoltaic support and the connecting node thereof, the bearing capacity of the photovoltaic support is greatly improved, and the large-span semi-flexible photovoltaic support and the connecting node thereof have the advantages of being light in rod piece self weight, large in adaptive span, high in structural efficiency, easy and convenient to construct, capable of being assembled, disassembled and used repeatedly and the like, can be applied to a large-span photovoltaic support system, are not limited by terrains and are high in comprehensive economical efficiency.

Description

Technical Field

[0001] The invention relates to a photovoltaic support system, in particular to a large-span semi-flexible photovoltaic support and a connection node thereof. Background Art

[0002] Distributed photovoltaic power generation is a kind of green energy that is connected to the grid on the user side and used for self-use, and the surplus power is connected to the grid. It has been more and more widely used in recent years. One of the problems faced by large-scale installation of photovoltaic modules is how to ensure the overall stability of photovoltaic modules under the action of negative wind pressure. In order to ensure stability, the existing photovoltaic support system usually uses special clamps to connect the support to the roof, and then installs photovoltaic modules on the longitudinal beams. This puts more stringent requirements on the appearance of the roof panel. The clamps are generally snap-on or upright bite-type connections. In many cases, the roof does not have the conditions for using clamps to connect, such as trapezoidal cross-section screws connecting the roof, glazed tiles or cement tiles. In this case, only drilling, welding or gluing can be used. Obviously, this approach causes great damage to the original roof, and there are prominent problems such as poor waterproofing or durability, complex construction technology, and high cost. This has restricted the development and application of distributed photovoltaics on the roof to a certain extent. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a semi-flexible photovoltaic bracket with a simple structure and easy construction, and a connecting node matched therewith, which not only has a large adaptability span and can realize the installation of photovoltaic components without damaging the original building roof, but also ensures that the installed photovoltaic components have sufficient stability.

[0004] The utility model is realized through the following technical solutions:

[0005] A large-span semi-flexible photovoltaic bracket and its connection node, including a longitudinal beam, a semi-flexible connection part and bracket supports arranged at both ends of the longitudinal beam, one end of the semi-flexible connection part is fixedly connected to the bracket support, and the other end is connected to the bracket support on the opposite side through a tensioning structure, and also includes a longitudinal beam support and a connection node assembly, one end of the longitudinal beam support part is fixedly connected to the longitudinal beam, and the other end is connected to the semi-flexible connection part through a connection node assembly; the length of the semi-flexible connection part between the bracket supports is adjusted by the tensioning structure to apply pre-tension to the semi-flexible connection part, thereby providing vertical pressure to the longitudinal beam support part, and the longitudinal beam support part supports the longitudinal beam under the action of the vertical pressure.

[0006] As a further improvement to the utility model, the longitudinal beam supports of two adjacent longitudinal beams are connected to the same semi-flexible connection portion through the connection node assembly to form a "V"-shaped structure.

[0007] A further improvement of the utility model is that the longitudinal beam is a double C-shaped steel composed of two C-shaped steels arranged back to back and welded in the middle through a tie plate, the longitudinal beam support is a thin-walled seamless steel pipe with flat joints at both ends, the longitudinal beam support is connected to the longitudinal beam with bolts, and the semi-flexible connection part is a cable.

[0008] A further improvement to the utility model is that the connecting node assembly includes a node plate and a U-shaped buckle, the node plate has an inverted "T"-shaped cross-section, the cable is fixed by the U-shaped buckle between the "—" plate of the node plate and the U-shaped buckle, and the longitudinal beam support is bolted to the "│" plate of the node plate.

[0009] For further improvement of the present invention, the cable should have a certain rigidity so as to provide vertical support force for the longitudinal beam support after pre-tensioning force is applied. The cable can be galvanized steel wire rope, stainless steel wire rope or plastic-coated steel stranded wire.

[0010] As a further improvement to the present invention, the bracket support includes a crossbeam and a vertical support rod, the longitudinal beam is connected to the crossbeam, and the tensioning structure is arranged on the crossbeam.

[0011] A further improvement to the utility model is that the tensioning structure is a single-hole clip anchor, the crossbeam is an H-shaped steel crossbeam, the crossbeam is provided with a support plate, an anchor plate and a through hole for the cable to pass through, the cable passes through the crossbeam and the single-hole clip anchor, the single-hole clip anchor is anchored to the anchor plate, and the anchor plate is fixed to the support plate.

[0012] As a further improvement to the utility model, a horizontal support member is provided between adjacent longitudinal beams, wherein the horizontal support member is a thin-walled seamless steel pipe with flat joints at both ends, and the horizontal support member is connected to the adjacent longitudinal beams by bolts.

[0013] Compared with the prior art, the utility model has a small number of lower supports, light rod weight, large adaptability, high structural efficiency, simple and convenient construction, is not restricted by terrain, avoids damaging the roof of the original building, and has high comprehensive economic efficiency. At the same time, the semi-flexible connection is prestressed to improve the bearing capacity and stability of the entire photovoltaic bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model's large-span semi-flexible photovoltaic bracket and its connection nodes;

[0015] Figure 2 This is a schematic diagram of the overall structure of the utility model's large-span semi-flexible photovoltaic bracket and its connection nodes;

[0016] Figure 3 It is a side view of the utility model's large-span semi-flexible photovoltaic bracket and its connection nodes;

[0017] Figure 4 This is a schematic diagram of the installation of the large-span semi-flexible photovoltaic bracket and its connection nodes of the utility model;

[0018] Figure 5-7 It is a schematic diagram of the assembly of the large-span semi-flexible photovoltaic bracket and its connection nodes of the utility model;

[0019] Figure 8-9 It is a schematic diagram of the tension structure of the large-span semi-flexible photovoltaic bracket and its connection nodes of the utility model;

[0020] Fig.10 It is a side view of other embodiments of the large-span semi-flexible photovoltaic support and its connection nodes after the inclined wind-proof cables are installed;

[0021] Fig.11 This is a diagram of the tilting state of other embodiments of the large-span semi-flexible photovoltaic support and its connection nodes of the utility model after using vertical support rods of different lengths. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of various embodiments of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0024] A large-span semi-flexible photovoltaic bracket and its connection node, including a longitudinal beam 1, a semi-flexible connection part 2 and a bracket support 3 arranged at both ends of the longitudinal beam 1, one end of the semi-flexible connection part 2 is fixedly connected to the bracket support 3, and the other end is connected to the opposite side bracket support 3 through a tensioning structure 5, a longitudinal beam support 6 is installed between the longitudinal beam 1 and the semi-flexible connection part 2, one end of the longitudinal beam support 6 is fixedly connected to the longitudinal beam 1, and the other end is connected to the semi-flexible connection part 2 through a connecting node assembly 4, after the photovoltaic bracket is installed, the length of the semi-flexible connection part 2 between the bracket supports 3 is adjusted by the tensioning structure 5 to apply pre-tension to the semi-flexible connection part 2, thereby providing axial pressure to the longitudinal beam support 6, and the longitudinal beam support 6 supports the longitudinal beam 1 and the photovoltaic panel above the longitudinal beam 1 under the action of the axial pressure.

[0025] In this embodiment, the photovoltaic bracket has a plurality of longitudinal beams 1, and the longitudinal beam supports 6 of every two adjacent longitudinal beams 1 are connected to the same semi-flexible connection portion 2 through a connection node assembly 4, and form a "V"-shaped structure. A plurality of longitudinal beam supports 6 are installed on each longitudinal beam 1 along the extension direction of the longitudinal beam 1. Therefore, after installation, the longitudinal beam supports 6 can form a plurality of "V"-shaped structures on the semi-flexible connection portion 2, such as Figure 4 shown.

[0026] The longitudinal beam 1 is a double C-shaped steel composed of two C-shaped steels arranged in back to back, which are welded by a gusset plate 7 in the middle. An installation gap 10 and an installation hole 8 for installing the longitudinal beam support 6 are left between the two C-shaped steels. The longitudinal beam support 6 is a thin-walled seamless steel pipe with flat joints at both ends. The flat joint is provided with an installation through hole 9. When installing the longitudinal beam support 6 on the longitudinal beam 1, the flat joint of the longitudinal beam support 6 is inserted into the installation gap 10, and the installation through hole 9 is made coaxial with the installation through hole 8. The bolts are passed through the installation holes 8 and 9 and then fixed with nuts. Figure 4 shown.

[0027] The semi-flexible connection part 2 is a cable 18 with a certain rigidity, so that it can provide vertical support force for the longitudinal beam support 6 after pre-tension is applied to the semi-flexible connection part 2. In this embodiment, the cable 18 is made of galvanized steel wire rope, and in other embodiments, stainless steel wire rope or plastic-coated steel stranded wire can also be used.

[0028] The connection node assembly 4 includes a node plate 11 and two U-shaped clips 12. Both ends of the U-shaped clips 12 are provided with threads. The cross-section of the node plate 11 is inverted "T" shape. The "|" plate of the node plate 11 is provided with a second mounting hole 13 of the longitudinal beam support 6, and the "—" plate of the node plate 11 is provided with two groups of third mounting holes 14 for the U-shaped clips 12 to pass through. During installation, the U-shaped clip 12 passes through the third mounting hole 14 on the "—" plate from bottom to top and fixes the U-shaped clip 12 with a nut. The cable 18 passes through the U-shaped clip 12 and is fixed between the "—" plate and the U-shaped clip 12 of the node plate 11. The longitudinal beam support 6 is bolted to the "│" plate of the node plate 11, as shown in FIG. Figure 6 shown.

[0029] In this embodiment, the bracket support 3 includes a cross beam 15 and vertical support rods 16 arranged at both ends of the cross beam 15 , the longitudinal beam 1 is welded and fixed to the cross beam 15 , and the tension structure 5 is arranged on the cross beam 15 .

[0030] In this embodiment, the tension structure 5 is a single-hole clip anchor, the crossbeam 15 is an H-shaped steel crossbeam, and the crossbeam 15 is provided with two support plates 23, an anchor plate 17 and a through hole 24 for the cable 18 to pass through. The anchor plate 17 is fixed on the support plate 23. Figure 8 As shown, the cable 18 passes through the crossbeam 15 and the single-hole clip anchor, and the single-hole clip anchor is anchored on the anchor plate 17. Fig. 9 As shown, when the photovoltaic bracket is installed, the cable 18 between the bracket supports 3 is in a relaxed state. After the photovoltaic bracket is installed, the cable 18 is pulled so that it partially passes through the single-hole clip anchor and is fixed. The cable 18 between the bracket supports 3 generates pre-tension due to being tightened. Since the fixed cable 18 of the single-hole clip anchor is kept in a tightened state, the cable 18 will generate axial pressure on the longitudinal beam support 6, making the longitudinal beam support 6 an elastic support with axial pressure, thereby forcing the longitudinal beam 1 to fit tightly against the photovoltaic panel.

[0031] In this embodiment, in order to improve the overall stability, a support member 19 is provided between adjacent longitudinal beams 1, and the axis of the support member 19 is perpendicular to the longitudinal beam 1. The support member 19 is a thin-walled seamless steel pipe with flat joints at both ends and a support member mounting hole 21. The longitudinal beam 1 is provided with a fourth mounting hole 20 for mounting the support member. The support member 19 is connected to the adjacent longitudinal beam 1 by bolts, such as Figure 1 As shown,

[0032] like Figure 4 As shown, in this embodiment, installing the support member 19 at the corresponding position of the longitudinal beam support member 6 installed in the "V" shape of the adjacent longitudinal beam 1 can better improve the stability of the entire photovoltaic support.

[0033] In other embodiments, in order to cope with the impact of strong winds on photovoltaic modules, an inclined windproof cable 22 may be installed between the semi-flexible connection portion 2 and the bracket supports 3 on both sides. Figure 8 shown.

[0034] In this embodiment, the longitudinal beam 1 is arranged horizontally. In other embodiments, the bracket supports 3 on both sides can be installed at different heights or vertical support rods 16 of different lengths can be used on both sides to form an angle between the installed photovoltaic panel and the roof or the ground, such as Fig. 9 shown.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A long-span semi-flexible photovoltaic bracket and its connection node, comprising a longitudinal beam, a semi-flexible connection part and bracket supports arranged at both ends of the longitudinal beam, one end of the semi-flexible connection part is fixedly connected to the bracket support, and the other end is connected to the bracket support on the opposite side through a tension structure, characterized in that: It also includes a longitudinal beam support and a connection node assembly, wherein one end of the longitudinal beam support is fixedly connected to the longitudinal beam, and the other end is connected to the semi-flexible connection portion through the connection node assembly; By adjusting the length of the semi-flexible connection between the bracket supports through the tensioning structure, pre-tension is applied to the semi-flexible connection, thereby providing axial pressure to the longitudinal beam support member. The longitudinal beam support member supports the longitudinal beam under the action of the axial pressure.

2. The long-span semi-flexible photovoltaic bracket and its connection node according to claim 1, characterized in that: The longitudinal beam supports of two adjacent longitudinal beams are connected to the same semi-flexible connection portion through the connection node assembly to form a "V"-shaped structure.

3. The long-span semi-flexible photovoltaic bracket and its connection node according to claim 1 or 2, characterized in that: The longitudinal beam is a double C-shaped steel composed of C-shaped steels arranged back to back, the longitudinal beam support is a thin-walled seamless steel pipe with flat joints at both ends, the longitudinal beam support is connected to the longitudinal beam with bolts, and the semi-flexible connection part is a cable.

4. The long-span semi-flexible photovoltaic bracket and its connection node according to claim 3, characterized in that: The connection node assembly includes a node plate and a U-shaped clip. The node plate has an inverted "T"-shaped cross section. The cable is fixed by the U-shaped clip between the "—" plate of the node plate and the U-shaped clip. The longitudinal beam support is bolted to the "│" plate of the node plate.

5. The long-span semi-flexible photovoltaic bracket and its connection node according to claim 4, characterized in that: The cable is a galvanized steel wire rope or a stainless steel wire rope or a plastic-coated steel stranded wire.

6. The long-span semi-flexible photovoltaic support and its connection node according to claim 4 or 5, characterized in that: The bracket support comprises a cross beam and a vertical support rod, the longitudinal beam is connected to the cross beam, and the tension structure is arranged on the cross beam.

7. The long-span semi-flexible photovoltaic support and its connection node according to claim 6, characterized in that: The tensioning structure is a single-hole clip anchor, and the crossbeam is an H-shaped steel crossbeam. The crossbeam is provided with a support plate, an anchor plate and a through hole for the cable to pass through. The cable passes through the crossbeam and the single-hole clip anchor. The single-hole clip anchor is anchored on the anchor plate, and the anchor plate is fixed on the support plate.

8. The long-span semi-flexible photovoltaic support and its connection node according to claim 2, characterized in that: A support member is provided between adjacent longitudinal beams, the axis of the support member is perpendicular to the longitudinal beam, the support member is a thin-walled seamless steel pipe with flat joints at both ends, and the support member is bolted to the adjacent longitudinal beams.

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