Photovoltaic flexible end support structure

Abstract

The invention relates to the technical field of flexible photovoltaic supports, in particular to a photovoltaic flexible end support structure, which comprises a support unit, an end support unit, an end support unit and an end support unit, and is characterized in that the support unit comprises a single-column side column and a side beam fixedly connected with the single-column side column; each force transmission pivot unit comprises a cotter pin connected with the corresponding side cross beam in a rotating mode, one end of each assembly cable penetrates through an opening located in the surface of the corresponding cotter pin, and the tail end of each assembly cable is fixed to the corresponding cotter pin through an arranged connecting piece; the cable-stayed unit is matched with the force transmission pivot unit and comprises a cable-stayed connecting assembly, and one end of the cable-stayed connecting assembly is rotationally connected with the cotter pin. The side stand column adopts a single column form, the construction requirement on a side stand column pile foundation can be reduced, the side stand column has very high adaptability to different mountain slopes, the assembly cable is directly connected with the cable-stayed part and the cable-stayed connecting assembly through the cotter pin, and axial force generated by the assembly cable is most directly transmitted to the cable-stayed part and then is transmitted to a cable-stayed foundation.

Description

Technical Field

[0001] This invention relates to the field of flexible photovoltaic support technology, and in particular to a flexible photovoltaic end support structure. Background Technology

[0002] Currently, the end support structure of flexible photovoltaic systems generally adopts a double-column form, as shown in the attached figure. Figure 10 As shown, the upper load is borne jointly by two columns. When the system adopts a double-layer cable arrangement, a third load-bearing cable needs to be added, which complicates the node structure. In the force transmission path, the main cable load needs to be transferred sequentially to the main cable anchor plate, the main cable anchor reinforcement plate, the side beam / column, the stay cable anchor reinforcement plate, and the stay cable anchor plate, and finally to the stay cable foundation, forming a multi-stage force transmission chain, as shown in the attached diagram. Figure 11 As shown.

[0003] The above structure has two core problems: 1. Low force transmission efficiency, multi-stage force transmission links lead to significant internal force loss, and prominent stress concentration at nodes, which greatly reduces structural reliability. 2. Poor terrain adaptability: The double columns require independent foundations. In sloping terrain, the adjustment accuracy of the height difference between the front and rear columns is insufficient, making it difficult to maintain the fixed tilt angle of the components. This results in a high installation failure rate when the slope is steep. In addition, the increased number of foundations raises the project cost and significantly degrades the economic efficiency.

[0004] Therefore, for photovoltaic projects in complex terrain (especially mountainous and hilly areas), there is an urgent need to develop a new type of end support structure. Summary of the Invention

[0005] In view of this, the purpose of this invention is to propose a flexible photovoltaic end support structure to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides a photovoltaic flexible end support structure, comprising: The support unit includes a single-column side column and a side beam fixedly connected to it; At least two force transmission hub units, each including a cotter pin rotatably connected to the side beam, one end of an assembly cable passing through an opening on the surface of the cotter pin and being fixed to the cotter pin at its end by a connecting member; The inclined cable unit adapted to the force transmission hub unit includes an inclined cable connection assembly with one end rotatably connected to the cotter pin, and an inclined cable member located at the other end of the inclined cable connection assembly for connecting to the inclined cable foundation. The horizontal tension of the component cable and the inclined tension of the inclined cable member are synchronously combined on the cotter pin to form a resultant force, which is directly transmitted to the inclined cable foundation through the inclined cable unit, forming a simplified force transmission system with single-node integration.

[0007] As a preferred technical scheme of the present application, the assembly cable includes an assembly fixing cable and / or an assembly bearing cable, and the end of the cable is fixed through the opening of the opening pin surface by the extrusion anchor as a connecting piece.

[0008] As a preferred technical scheme of the present application, the diagonal connection assembly is an ear plate with two groups of connecting holes, the first group of holes is rotationally connected with the two ends of the opening pin, and the second group of holes is connected with the diagonal member.

[0009] As a preferred technical scheme of the present application, the diagonal member is a diagonal cable or a diagonal rod.

[0010] As a preferred technical scheme of the present application, the force transmission hub unit further includes a pair of side beam ear plates provided with a rotating hole, the side beam ear plates are fixedly arranged outside the side beam, the two ends of the opening pin are rotationally connected with the rotating hole, and the axis lines of the rotating hole, the opening pin and the first group of holes coincide with each other.

[0011] As a preferred technical scheme of the present application, the side beam ear plate is fixedly connected with the side beam by welding, and a matching groove matched with the cross-sectional profile of the side beam ear plate is formed on one side of the side beam ear plate to increase the welding contact surface between the side beam ear plate and the side beam.

[0012] As a preferred technical scheme of the present application, the diagonal unit further includes: a diagonal anchoring assembly for fixing one end of the diagonal member passing through the second group of holes of the diagonal connection assembly; a diagonal foundation connection assembly for fixedly connecting the other end of the diagonal member relative to the diagonal anchoring assembly with the diagonal foundation.

[0013] As a preferred technical scheme of the present application, the diagonal foundation connection assembly includes: an extrusion anchor; a connecting plate provided with a positioning groove and a bolt hole, one end of the diagonal member passes through the positioning groove and is fixed by the extrusion anchor; a U-shaped bolt, two rods of which pass through the bolt hole and are connected with a U-shaped bolt nut; a first connecting seat provided with a U-shaped bolt positioning hole, the first connecting seat is connected with a pile body, and the arc-shaped part between the two rods of the U-shaped bolt passes through the U-shaped bolt positioning hole.

[0014] As a preferred technical scheme of the present application, the diagonal foundation connection assembly includes: a fixed plate provided with a first rotating groove, the fixed plate is fixedly connected with one end of the diagonal member relative to the diagonal connection assembly; a second connecting seat provided with a second rotating groove, the second connecting seat is connected with a pile body; The positioning pin with positioning channels at both ends penetrates the second rotating groove and the first rotating groove; The elastic stopper is arranged in the positioning channel at both ends of the positioning pin, and is used for preventing the axial movement of the positioning pin from the second rotating groove and the first rotating groove.

[0015] As a preferred technical scheme of the present application, the edge cross beam ear plate is fixed on the side of the edge cross beam opposite to the photovoltaic module, the edge cross beam is provided with a first through hole in the shape of a Chinese character on the side facing the photovoltaic module, and a second through hole in the shape of a round hole on the side opposite to the photovoltaic module, and the end of the module cable is connected with the split pin after penetrating the first through hole and the second through hole in sequence.

[0016] The present application has the following advantages: the edge upright column is in the form of a single column, which reduces the construction requirements for the pile foundation of the edge upright column, has high adaptability to different mountain slopes, the module cable is directly connected with the cable-stayed connecting assembly through the split pin, the axial force generated by the module cable is most directly transmitted to the cable-stayed member and then to the cable-stayed foundation, the force transmission path is reduced to the simplest, the stress is clear and distinct, and the structure is stable and reliable, meanwhile, the edge cross beam ear plate can be welded to be perpendicular to the ground according to the inclination angle of the module, so that the split pin is horizontal, and the angle adjustment of the cable-stayed member and the cable-stayed connecting assembly is adapted, and the opening of the edge cross beam web reduces the material cost and welding cost of the excess connecting plate and rib plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0018] Figure 1 It is a perspective structural schematic diagram of the present application; Figure 2 It is a front view structural schematic diagram of the present application; Figure 3 It is a perspective structural schematic diagram of the edge cross beam, the edge upright column, the module fixing cable, the module bearing cable, the split pin and the cable-stayed connecting assembly of the present application; Figure 4 It is a top view structural schematic diagram of the present application; Figure 5 It is a partial cross-sectional perspective structural schematic diagram of the edge cross beam, the edge upright column, the edge cross beam ear plate and the cable-stayed connecting assembly of the present application; Figure 6 It is a perspective structural schematic diagram of the edge cross beam ear plate and the cable-stayed connecting assembly of the present application; Figure 7It is a perspective structural schematic view of the U-shaped bolt, the first connecting seat and the cable-stayed member of the present application; Figure 8 It is a perspective structural schematic view of the cable-stayed member, the fixed plate, the second connecting seat and the positioning pin of the present application; Figure 9 It is a perspective structural schematic view of the side cross beam ear plate of another style of the present application; Figure 10 It is a perspective structural schematic view of one of the side stand columns in the prior art; Figure 11 It is a perspective structural schematic view of another side stand column in the prior art.

[0019] In the figure, the marks are as follows: 1, side stand column; 2, side cross beam; 3, side cross beam ear plate; 4, assembly fixing cable; 5, assembly bearing cable; 6, split pin; 7, cable-stayed member; 8, cable-stayed connecting assembly; 9, cable-stayed anchoring assembly; 10, extruded anchor; 11, connecting plate; 12, U-shaped bolt; 13, U-shaped bolt nut; 14, first connecting seat; 15, U-shaped bolt positioning hole; 16, pile body; 17, fixed plate; 18, second connecting seat; 19, positioning pin; 20, second through hole; 21, first through hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meanings by those skilled in the art to which the present application belongs. The terms "first", "second" and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0022] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a photovoltaic flexible end support structure includes: a support unit, including a single-column side column 1 and a side beam 2 fixedly connected thereto; at least two force transmission hub units, including a cotter pin 6 rotatably connected to the side beam 2, one end of the module cable passing through an opening on the surface of the cotter pin 6 and fixed to the cotter pin 6 at the end by a connector; and a cable tie unit, including a cable tie connection assembly 8 rotatably connected to the cotter pin 6 at one end, and a cable tie member 7 provided at the other end of the cable tie connection assembly 8 for connecting to the cable tie foundation. The horizontal tension of the module cable and the diagonal tension of the cable tie member 7 are synchronously combined on the cotter pin 6 to form a resultant force, which is directly transmitted to the cable tie foundation through the cable tie unit, forming a simplified force transmission system with single-node integration. The above technical solution simplifies the force transmission path. In use, the side column 1 and side beam 2 are installed first. The cotter pin 6 is rotatably connected to the side beam 2. The cotter pin 6 is connected to the inclined foundation through the inclined tie connection assembly 8 and the inclined tie member 7. The component cable is inserted into the opening of the cotter pin 6 and anchored. Then, the photovoltaic module is installed on the component cable. After installation, the horizontal tension of the component cable and the inclined tension of the inclined tie member 7 are vectored and combined at the cotter pin 6. The resultant force is directly transmitted to the inclined foundation through the inclined tie unit. At the same time, the side column 1 independently bears the vertical load. This solves the problem that the side column 1 and side beam 2 of the traditional flexible photovoltaic support need to transmit force through multiple stages such as the main cable anchor plate and stiffening plate, which results in complex structure and large internal force loss. The force transmission path is shortened and the internal force transmission efficiency of the node is improved. Moreover, the side column 1 adopts the form of a single column, which reduces the construction requirements of the pile foundation of the side column 1. Therefore, it has high adaptability to different mountain slopes.

[0023] like Figure 1 and Figure 3 As shown, in this embodiment, the component cable includes component fixing cable 4 and / or component load-bearing cable 5. Its end passes through the opening on the surface of the cotter pin 6 and is fixed by the extrusion anchor 10 as a connector. In this embodiment, two component fixing cables 4 and one component load-bearing cable 5 are provided on the side beam 2. The component load-bearing cable 5 is located between the two component fixing cables 4. The multi-cable cooperative force deviation is small and the wind load resistance is high. The above technical solution can fix the component cable to the cotter pin 6. In use, the component cable is inserted into the opening on the surface of the cotter pin 6, and the compression anchor 10 is compressed and fixed by hydraulic means to adjust the tension balance of the component cable.

[0024] like Figure 3 and Figure 5 As shown, in this embodiment, the inclined tie assembly 8 is an ear plate with two sets of connecting holes. The first set of holes is rotatably connected to both ends of the cotter pin 6, and the second set of holes is connected to the inclined tie 7. The technical scheme can rotate the cable-stayed connecting assembly 8 and the split pin 6, in use, the two ends of the split pin 6 are inserted into the first group of holes of the lug plate, the cable-stayed member 7 is connected with the second group of holes, the lug plate double-hole design realizes seamless force flow switching of the split pin 6 and the cable-stayed member 7, the rotating joint fatigue life is prolonged, the stress concentration coefficient is reduced, the technical problem of easy cracking of the traditional welding joint stress concentration is solved, and the split pin 6 can be made of 40Cr (alloy structural steel).

[0025] As shown in Figure 1 , in the embodiment, the cable-stayed member 7 is a cable-stayed cable or a cable-stayed rod, which is not shown in the figure; The technical scheme can adapt to steep slopes and gentle slopes by selecting different types of cable-stayed members 7, the cable-stayed cable is suitable for flexible deformation, and the cable-stayed rod provides rigid support, specifically, the cable-stayed cable can be selected when the slope is greater than 15°, and the cable-stayed rod can be selected when the slope is less than 15°.

[0026] As shown in Figure 5 and Figure 6 , in the embodiment, the force transmission hub unit further includes a pair of side beam lug plates 3 provided with rotating holes, the side beam lug plates 3 are fixedly arranged outside the side beam 2, and the two ends of the split pin 6 are rotatably connected with the rotating holes, the rotating holes, the split pin 6 and the first group of holes are coaxial. The technical scheme can rotate the cable-stayed connecting assembly 8 and the split pin 6, in use, the two ends of the split pin 6 are inserted into the first group of holes of the lug plate, the cable-stayed member 7 is connected with the second group of holes, the lug plate double-hole design realizes seamless force flow switching of the split pin 6 and the cable-stayed member 7, the rotating joint fatigue life is prolonged, the stress concentration coefficient is reduced, the technical problem of easy cracking of the traditional welding joint stress concentration is solved, and the split pin 6 can be made of 40Cr (alloy structural steel).

[0027] As shown in Figure 3 and Figure 5 , in the embodiment, the side beam lug plate 3 is fixedly connected with the side beam 2 by welding, and the side beam lug plate 3 is formed with a fitting groove on one side thereof, which is matched with the cross-sectional profile of the side beam lug plate 3, so as to increase the welding contact surface between the side beam lug plate 3 and the side beam 2. The technical scheme can improve the connection strength between the side beam lug plate 3 and the side beam 2, in use, the fitting groove of the side beam lug plate 3 is clamped into the side beam 2, and full welding is performed on both sides, and the weld is detected by ultrasonic detection, so that the lug plate and the beam form a composite force body, the welding strength is improved, the thickness of the side beam lug plate 3 is reduced, and the technical problem of root fracture caused by insufficient welding surface of the side beam lug plate 3 is solved.

[0028] As shown in Figure 1 and Figure 4As shown, in this embodiment, the inclined cable unit further includes: an inclined cable anchoring assembly 9, which is used to fix one end of the inclined cable 7 passing through the second set of holes of the inclined cable connection assembly 8; and an inclined cable foundation connection assembly, which is used to fix the other end of the inclined cable 7 relative to the inclined cable anchoring assembly 9 to the inclined cable foundation. The above technical solution is used to adjust the preload of the inclined cable. In use, one end of the inclined cable member 7 is inserted into the inclined cable connection assembly 8, and the other end is fixedly connected to the inclined cable foundation through the inclined cable foundation connection assembly. By tightening the inclined cable anchor assembly 9, the cable is tensioned to the designed preload. The preload adjustment accuracy is high and the flatness error of the photovoltaic panel is small.

[0029] like Figure 7 As shown, in this embodiment, the inclined foundation connection assembly includes: a compression anchor 10; a connecting plate 11 with a positioning groove and bolt holes, one end of the inclined member 7 passing through the positioning groove and fixed by the compression anchor 10; a U-bolt 12, the two rods of which pass through the bolt holes and are connected to a U-bolt nut 13; a first connecting seat 14 with a U-bolt positioning hole 15, the first connecting seat 14 being connected to a pile body 16, and the arc-shaped portion of the U-bolt 12 located between the two rods passing through the U-bolt positioning hole 15; The above technical solution enables the inclined tie rod 7 to be connected to the pile body 16 via U-bolts 12. In use, the inclined tie rod 7 is inserted into the positioning groove of the connecting plate 11 and fixed by the extrusion anchor 10. The U-bolt 12 passes through the bolt hole of the connecting plate 11 and the arc-shaped part of the U-bolt 12 is inserted into the U-bolt positioning hole 15 of the first connecting seat 14. The U-bolt nut 13 is tightened to complete the installation. The U-bolt 12 and the connecting plate 11 form a three-dimensional self-locking structure. The contact surface can be covered with an anti-corrosion coating to prevent the foundation connection point from rusting and failing. The connection has a long service life and a high seismic resistance level.

[0030] like Figure 8 As shown, in this embodiment, the inclined bridge foundation connection assembly includes: a fixing plate 17 with a first rotating groove, the fixing plate 17 being fixedly connected to one end of the inclined bridge member 7 relative to the inclined bridge connection assembly 8; a second connecting seat 18 with a second rotating groove, the second connecting seat 18 being connected to a pile body 16; a positioning pin 19 with positioning channels at both ends, which simultaneously passes through the second rotating groove and the first rotating groove; and an elastic stop member, which is disposed in the positioning channels at both ends of the positioning pin 19, for preventing the positioning pin 19 from axially moving away from the second rotating groove and the first rotating groove; The above technical solution allows the tie rod 7 to be connected to the pile body 16 in another way. When in use, the fixed plate 17 and the second connecting seat 18 are aligned with each other, the positioning pin 19 is inserted and the elastic stop is installed. The double rotating groove plus the positioning pin 19 constitutes a universal joint type adaptive node, which allows differential settlement of the foundation, reduces maintenance costs, and prevents the tie rod 7 from bending and breaking due to foundation settlement.

[0031] likeFigure 3 and Figure 5 As shown in the figure, in the embodiment, the edge beam lug plate 3 is fixed on the side of the edge beam 2 opposite to the photovoltaic module, the edge beam 2 is provided with a first through hole 21 in the shape of a Chinese character on the side facing the photovoltaic module, and is provided with a second through hole 20 in the shape of a round hole on the side opposite to the photovoltaic module, the end of the module cable is connected with the split pin 6 after sequentially penetrating the first through hole 21 and the second through hole 20; The above technical scheme can make the module cable adapt to the fluctuation caused by the change of wind load, the one side of the web plate of the edge beam 2 is a slit hole, no matter what the inclination angle of the module supported by the edge beam 2 is, the angle of the opening can be adjusted to be perpendicular to the ground, so that when the module cable is shaken up and down by the wind load, the cable will not be cut by the opening position, the other side of the web plate of the edge beam 2 is a round hole, the center of the hole is coaxial with the opening center of the split pin 6, which plays a role in limiting the displacement of the module cable.

[0032] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope (including claims) of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0033] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the present application are intended to be included within the scope of the present application.

Claims

1. A photovoltaic flexible end support structure, characterized in that, include: The support unit includes a single-column side column (1) and a side beam (2) fixedly connected to it. At least two force transmission hub units, each including a cotter pin (6) rotatably connected to the side beam (2), one end of the component cable passing through an opening on the surface of the cotter pin (6) and fixed at the end to the cotter pin (6) by a connecting piece. The inclined cable unit adapted to the force transmission hub unit includes an inclined cable connection assembly (8) with one end rotatably connected to the cotter pin (6), and an inclined cable member (7) provided at the other end of the inclined cable connection assembly (8) for connecting to the inclined cable foundation. The horizontal tension of the component cable and the inclined tension of the inclined cable member (7) are synchronously combined on the cotter pin (6) to form a resultant force, which is directly transmitted to the inclined cable foundation through the inclined cable unit to form a simplified force transmission system with single-node integration.

2. The photovoltaic flexible end support structure according to claim 1, characterized in that, The component cable includes a component fixing cable (4) and / or a component load-bearing cable (5), the ends of which pass through the opening on the surface of the cotter pin (6) and are fixed by a compression anchor (10) as a connector.

3. The photovoltaic flexible end support structure according to claim 1, characterized in that, The inclined tie assembly (8) is an ear plate with two sets of connecting holes. The first set of holes is rotatably connected to both ends of the cotter pin (6), and the second set of holes is connected to the inclined tie (7).

4. The photovoltaic flexible end support structure according to claim 3, characterized in that, The inclined cable (7) is a cable or a rod.

5. The photovoltaic flexible end support structure according to claim 3, characterized in that, The force transmission hub unit also includes a pair of side beam ear plates (3) with rotating holes. The side beam ear plates (3) are fixedly installed on the outside of the side beam (2). The two ends of the cotter pin (6) are rotatably connected to the rotating holes. The axis lines of the rotating holes, the cotter pin (6) and the first set of holes coincide with each other.

6. The photovoltaic flexible end support structure according to claim 5, characterized in that, The side beam ear plate (3) is fixedly connected to the side beam (2) by welding. The side beam ear plate (3) has a fitting groove on one side that matches the cross-sectional profile of the side beam ear plate (3) to increase the welding contact surface between the side beam ear plate (3) and the side beam (2).

7. The photovoltaic flexible end support structure according to claim 4, characterized in that, The cable-stayed unit also includes: A diagonal anchor assembly (9) is used to fix one end of the diagonal member (7) that passes through the second set of holes in the diagonal connection assembly (8); A cable-stayed foundation connection assembly for fixing the other end of the cable-stayed member (7) relative to the cable-stayed anchor assembly (9) to the cable-stayed foundation.

8. The photovoltaic flexible end support structure according to claim 7, characterized in that, The cable-stayed foundation connection assembly includes: Extrusion anchor (10); A connecting plate (11) with a positioning groove and bolt holes is provided, and one end of the diagonal tie (7) passes through the positioning groove and is fixed by the extrusion anchor (10); U-bolt (12), whose two rods pass through the bolt hole and are connected to U-bolt nut (13); A first connecting seat (14) with a U-bolt positioning hole (15) is provided. The first connecting seat (14) is connected to a pile body (16). The arc-shaped part of the U-bolt (12) located between the two rods passes through the U-bolt positioning hole (15).

9. The photovoltaic flexible end support structure according to claim 7, characterized in that, The cable-stayed foundation connection assembly includes: A fixing plate (17) with a first rotating groove is fixedly connected to one end of the diagonal brace (7) relative to the diagonal brace connection assembly (8); A second connecting seat (18) with a second rotating groove is provided, and a pile body (16) is connected to the second connecting seat (18). A positioning pin (19) with positioning channels at both ends passes through both the second rotating groove and the first rotating groove; An elastic stop is provided in the positioning channels at both ends of the positioning pin (19) to prevent the positioning pin (19) from moving axially away from the second rotating groove and the first rotating groove.

10. The photovoltaic flexible end support structure according to claim 6, characterized in that, The side beam ear plate (3) is fixedly installed on the side of the side beam (2) opposite to the photovoltaic module. The side beam (2) has a first through hole (21) in the shape of a straight line on the side facing the photovoltaic module, and a second through hole (20) in the shape of a round hole on the other side opposite to the photovoltaic module. The end of the module cable is connected to the cotter pin (6) after passing through the first through hole (21) and the second through hole (20) in sequence.

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