A grid-type photovoltaic support assembly

Abstract

The present invention discloses a grid-shaped photovoltaic support assembly, which includes a number of cross-shaped supports distributed in a horizontal rectangular grid pattern, and the number of cross-shaped supports together form a rectangular grid-shaped photovoltaic support system; except for a number of cross-shaped supports located at the outermost periphery of the rectangular grid-shaped photovoltaic support system, any cross-shaped support is mutually traction-connected with the adjacent cross-shaped supports around it through traction cables, thereby forming a mutually traction network structure; improving the lighting uniformity of the vegetation under the photovoltaic array.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic brackets. Background Art

[0002] Flexible photovoltaic brackets based on steel cables have significant advantages in environmental adaptability, power generation efficiency, cost and land utilization, and are one of the important directions for the development of photovoltaic systems in the future.

[0003] At the same time, the coexistence of vegetation and photovoltaic arrays can achieve efficient land use, but in practice there are still the following problems:

[0004] The photovoltaic arrays installed on the existing flexible photovoltaic brackets based on steel cables are connected to each other by flexible traction of the steel cables, but are generally still in a relatively fixed state. When this photovoltaic array receives sunlight projection, a grid-like light spot is formed on the vegetation on the ground. At the same time, a number of local shadow areas with multiple discrete array distributions are formed in the grid-like light spot. The vegetation in the several local shadow areas with discrete array distribution suffers from long-term insufficient sunlight radiation, and at the same time, there is excessive sunlight radiation at the grid-like light spot. In general, the vegetation under the rectangular photovoltaic array suffers from serious uneven lighting, so it is necessary to suppress this uneven lighting problem. Summary of the invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a grid-type photovoltaic support assembly to improve the uniformity of lighting of vegetation under the photovoltaic array.

[0006] Technical solution: To achieve the above-mentioned purpose, a grid-type photovoltaic support assembly of the present invention comprises a plurality of cross-shaped supports distributed in a horizontal rectangular grid shape, and the plurality of cross-shaped supports together constitute a rectangular grid-type photovoltaic support system;

[0007] Except for several cross-shaped supports located at the outermost periphery of the rectangular grid photovoltaic support system, any cross-shaped support is connected to the adjacent cross-shaped supports on all sides by traction ropes, thereby forming a mutually traction network structure.

[0008] Furthermore, a plurality of cross-shaped supports located at the outermost periphery of the rectangular grid photovoltaic support system are connected to the fixed support via traction ropes.

[0009] Furthermore, a photovoltaic panel is horizontally fixedly installed on each cross-shaped support; a plurality of photovoltaic panels form a rectangular photovoltaic array, and any adjacent photovoltaic panels in the rectangular photovoltaic array are arranged at a distance from each other, so that a grid-like clearance gap is formed in the rectangular photovoltaic array.

[0010] Furthermore, the cross-shaped support includes four structural arms radially distributed in a "cross" shape; a central block is fixed to the central lower side of the cross-shaped support;

[0011] Tension springs are arranged along the length direction on the lower side of each structural arm. One end of each tension spring is fixedly connected to a central block, and the other end is fixedly connected to one end of a traction cable through a connecting piece. Both ends of each traction cable are tightened under the pulling of each tension spring, so that the cruciform supports are elastically traction-connected to the adjacent cruciform supports around.

[0012] Further, a first pair of traction wire guide wheels and a second pair of traction wire guide wheels are rotatably installed at the ends of each structural arm, and the traction cable movably passes between the first pair of traction wire guide wheels and the second pair of traction wire guide wheels.

[0013] Further, a central rotating column is provided in the center of the rectangular grid photovoltaic support system, and the ground driving device can drive the central rotating column to rotate around the axis;

[0014] In the top view of the rectangular grid photovoltaic support system, a first virtual enclosure circle, a second virtual enclosure circle and a third virtual enclosure circle are equidistantly distributed from the inside to the outside with the central rotating column as the center;

[0015] A number of cruciform supports within the range enclosed by the first virtual enclosure circle are denoted as central area cruciform supports;

[0016] A number of cruciform supports in the area between the first virtual enclosure circle and the second virtual enclosure circle are denoted as interlayer area cruciform supports;

[0017] A number of cruciform supports in the area between the second virtual enclosure circle and the third virtual enclosure circle are denoted as edge area cruciform supports;

[0018] A number of tensioned windproof cables distributed radially are arranged within the range enclosed by the second virtual enclosure circle. One end of each windproof cable close to each other is fixedly connected to the outer wall of the central rotating column, and the other ends of the number of windproof cables far from each other are respectively fixedly connected to the central blocks of a number of interlayer area cruciform supports;

[0019] The active rotation of the central rotating column causes a number of radially distributed windproof cables to be gradually spirally wound around the central rotating column, so that the other ends of the number of windproof cables far from each other forcibly pull a number of interlayer area cruciform supports, so that a number of interlayer area cruciform supports distributed in an enclosed shape all move gradually closer to the central rotating column.

[0020] Further, mounting holes for fixedly installing photovoltaic panels are provided on each structural arm of the cruciform support.

[0021] Further, a working method of the grid photovoltaic support assembly is characterized in that: controlling the central rotating column to rotate slowly back and forth periodically around the axis.

[0022] Beneficial effects: During the process that the central rotating column of the present invention rotates slowly back and forth periodically around the axis, grid-shaped light spots and an array of several discrete block-shaped shadow areas are formed on the vegetation ground, and reciprocally gather and diffusely shift periodically with the central rotating column as the center, as well as the change in the density and width of the grid-shaped light spots; thereby avoiding the problem that there is local long-term sunlight occlusion on the ground, while some parts are exposed to excessive sunlight for a long time, which is not conducive to the uniform lighting of crops on the ground. Description of the drawings

[0023] Appendix Figure 1 It is a top view of a rectangular grid-type photovoltaic support system with the central rotating column hidden;

[0024] Appendix Figure 2 It is a top view of the overall rectangular grid-type photovoltaic support system;

[0025] Appendix Figure 3 Based on Appendix Figure 2 It is a schematic diagram after installing photovoltaic panels on the rectangular grid-type photovoltaic support system;

[0026] Appendix Figure 4 It is a top view of a cross-shaped support in a certain sandwich area;

[0027] Appendix Figure 5 Based on Appendix Figure 4 It is a bottom view;

[0028] Appendix Figure 6 Based on Appendix Figure 5 It is a three-dimensional bottom view;

[0029] Appendix Figure 7 It is a schematic diagram of the cooperation between the photovoltaic panel and the cross-shaped support. Detailed implementation manners

[0030] The present invention will be further described below with reference to the drawings.

[0031] As shown in Appendix Figures 1 to 7 A grid-type photovoltaic support assembly, as Figure 1 shown, includes several cross-shaped supports 2 distributed in a horizontal rectangular grid, and several cross-shaped supports 2 together form a rectangular grid-type photovoltaic support system 1; the rectangular grid-type photovoltaic support system 1 is higher than the ground; below the rectangular grid-type photovoltaic support system 1 is vegetation or crops.

[0032] Except for several cross-shaped supports 2 located at the outermost periphery of the rectangular grid-type photovoltaic support system 1, any cross-shaped support 2 is elastically traction-connected to the adjacent cross-shaped supports 2 around it through a traction cable 3, thereby forming an elastically traction-connected network structure, and the traction cable 3 can be a flexible steel cable; several cross-shaped supports 2 located at the outermost periphery of the rectangular grid-type photovoltaic support system 1 are connected to a fixed support through a traction cable 3.

[0033] As Figure 3 and 7 shown, on each cruciform support 3, a photovoltaic panel 12 is horizontally and fixedly installed; a number of photovoltaic panels 12 form a rectangular photovoltaic array 31, and any adjacent photovoltaic panels 12 in the rectangular photovoltaic array 31 are spaced apart from each other, so as to form a grid-like clearance 14 within the rectangular photovoltaic array 31; when the rectangular photovoltaic array 31 receives sunlight projection, the sunlight passes through the grid-like clearance 14 and projects onto the ground, forming grid-like light spots on the ground, and at the same time, a number of discrete block-shaped shadow area arrays separated by the grid-like light spots are formed on the vegetation on the ground. There is a problem of long-term insufficient radiation for the vegetation in the rectangular photovoltaic array 31 below several block-shaped partial shadow areas, and there is also a problem of excessive sunlight radiation at the grid-like light spot areas. Generally speaking, there is a serious problem of uneven lighting for the vegetation below the rectangular photovoltaic array 31. Therefore, it is necessary to suppress this problem of uneven lighting. The following content is the specific solution to the uneven problem:

[0034] As Figure 4 、 5 、6, 7; the cruciform support 3 includes four structural arms 2a radially distributed in a "cross" shape. Installation holes 80 for fixedly installing the photovoltaic panel 12 are provided on each structural arm 2a of the cruciform support 2; a central block 9 is fixedly installed on the lower side of the center of the cruciform support 3; tension springs 8 are arranged along the length direction on the lower side of each structural arm 2a. One end of each tension spring 8 is fixedly connected to the central block 9, and the other end is fixedly connected to one end of the traction cable 3 through a connecting member 6. The ends of each structural arm 2a are rotatably installed with a first pair of traction line guide wheels 4 and a second pair of traction line guide wheels 5. The traction cable 3 passes through the space between the first pair of traction line guide wheels 4 and the second pair of traction line guide wheels 5. Both ends of each traction cable 3 are tightened under the pulling of each tension spring 8, so that each cruciform support 2 is elastically traction-connected to the adjacent cruciform supports 2 around.

[0035] As Figure 2 shown, a central rotating column 13 is provided in the center of the rectangular grid-type photovoltaic support system 1, and the ground driving device can drive the central rotating column 13 to rotate around the axis; in the top view perspective of the rectangular grid-type photovoltaic support system 1, it is assumed that a first virtual enclosure circle 17, a second virtual enclosure circle 16 and a third virtual enclosure circle 15 are equidistantly distributed from the inside to the outside with the central rotating column 13 as the center.

[0036] A number of cruciform supports 2 within the range enclosed by the first virtual enclosure circle 17 are denoted as central area cruciform supports 2a;

[0037] A number of cruciform supports 2 in the area between the first virtual enclosure circle 17 and the second virtual enclosure circle 16 are denoted as interlayer area cruciform supports 2b;

[0038] The several cruciform supports 2 in the area between the second virtual enclosure circle 16 and the third virtual enclosure circle 15 are denoted as the edge area cruciform supports 2b;

[0039] Several tensioned windproof cables 11 distributed radially are arranged within the range enclosed by the second virtual enclosure circle 16. Each windproof cable 11 is a flexible steel cable. One end of each pair of adjacent windproof cables 11 is fixedly connected to the outer wall of the central rotating column 13, and the other ends of the several windproof cables 11 are respectively fixedly connected to the central blocks 9 of several cruciform supports 2b in the sandwich area. The active rotation of the central rotating column 13 causes the several radially distributed windproof cables 11 to gradually wind around the central rotating column 13 in a spiral shape, thereby forcibly pulling the other ends of the several windproof cables 11 away from each other, and thus causing the several cruciform supports 2b distributed in an enclosed shape to all move gradually closer to the central rotating column 13.

[0040] The detailed working principle and working method of the grid-type photovoltaic support assembly:

[0041] In the initial state, the adjacent photovoltaic panels 12 on the rectangular photovoltaic array 31 are evenly arrayed at equal intervals, so that regular criss-cross grid-shaped through-passage gaps 14 are formed within the rectangular photovoltaic array 31;

[0042] The several cruciform supports 2b distributed in an enclosed shape play a role in windproof stability under the combined traction and restraint of the several radially distributed windproof cables 11, thereby enhancing the overall wind resistance of the rectangular grid-type photovoltaic support system 1;

[0043] When the rectangular photovoltaic array 31 receives sunlight projection, the sunlight passes through the grid-shaped through-passage gaps 14 and projects onto the ground, forming regular and uniform grid-shaped light spots on the vegetation on the ground. At the same time, several discrete block-shaped shadow area arrays separated by the grid-shaped light spots are formed on the vegetation on the ground. There is a problem of long-term insufficient radiation for the vegetation located in several block-shaped local shadow areas below the rectangular photovoltaic array 31. At the same time, there is a problem of excessive sunlight radiation at the grid-shaped light spots. Generally speaking, there is a serious problem of uneven lighting for the vegetation below the rectangular photovoltaic array 31. Therefore, it is necessary to suppress this problem of uneven lighting;

[0044] At this time, the ground driving device can drive the central rotating column 13 to rotate back and forth periodically around the axis;

[0045] On the basis of the initial state, during the process of the central rotating column 13 slowly rotating forward around the axis, several windproof cables 11 distributed radially gradually wind around the central rotating column 13 in a spiral shape, so that one end of several windproof cables 11 away from each other forcibly pulls several cross-shaped supports 2b in the sandwich area, so that several cross-shaped supports 2b distributed in an enclosing shape all move gradually closer to the central rotating column 13. Since any cross-shaped support 2 is in a non-rigid elastic traction connection relationship with the adjacent cross-shaped supports 2 around it, from a top-down perspective, the movement of the cross-shaped support 2b in the sandwich area gradually approaching the central rotating column 13 will drive each central area cross-shaped support 2a and each edge area cross-shaped support 2b to follow in the direction of approaching the central rotating column 13; furthermore, the discrete block-shaped shadow area array on the ground also follows and moves towards the central rotating column 13, so that the grid-shaped light spots formed on the ground vegetation move slowly in the direction of approaching the central rotating column 13. At the same time, the width and density of the grid-shaped light spots formed on the ground vegetation also change correspondingly relative to the initial state. The area of the grid-shaped light spots close to the center becomes narrower and denser, and the area far from the center becomes wider and sparser; as a result, the originally shaded area of the ground vegetation becomes a light spot area, and the originally light spot area becomes a shaded area; subsequently, during the process of the central rotating column 13 slowly rotating backward around the axis, the windproof cables 11 originally wound on the central rotating column 13 are gradually released, and the rectangular photovoltaic array 31 spontaneously returns to the initial state under the elastic restoring force of each tension spring 8. Each adjacent photovoltaic panel 12 on the rectangular photovoltaic array 31 returns to the equidistant and uniform array distribution in the initial state, and the ground vegetation returns to the regular and uniform grid-shaped light spots in the initial state;

[0046] During the process of the central rotating column 13 continuously and slowly rotating back and forth periodically around the axis, the grid-shaped light spots and several discrete block-shaped shadow area arrays formed on the vegetation ground offset periodically in a reciprocating converging and diverging manner centered on the central rotating column 13, as well as the change in the density and width of the grid-shaped light spots; thus avoiding the problem that there is long-term local sunlight occlusion on the ground, while some parts are exposed to excessive sunlight for a long time, which is not conducive to the uniform lighting of the crops on the ground.

[0047] The above is only the preferred embodiment of the present invention. It should be pointed out that: for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A grid-type photovoltaic support assembly, characterized in that: It comprises a plurality of cross-shaped supports (2) distributed in a horizontal rectangular grid shape, wherein the plurality of cross-shaped supports (2) together form a rectangular grid photovoltaic support system (1); Except for a number of cross-shaped supports (2) located at the outermost periphery of the rectangular grid photovoltaic support system (1), any cross-shaped support (2) is mutually connected to the adjacent cross-shaped supports (2) via traction ropes (3), thereby forming a mutually traction network structure; the cross-shaped support (2) comprises four structural arms (2a) radially distributed in a "cross" shape; a central block (9) is fixed to the central lower side of the cross-shaped support (2); a tension spring (8) is provided on the lower side of each structural arm (2a) along the length direction, one end of each tension spring (8) is fixedly connected to the central block (9), and the other end is fixedly connected to one end of the traction rope (3) via a connecting piece (6), and the two ends of each traction rope (3) are tightened under the traction of each tension spring (8), so that the cross-shaped support (2) is mutually elastically connected to the adjacent cross-shaped supports (2) on the periphery; A central rotating column (13) is provided at the center of the rectangular grid photovoltaic support system (1), and a ground driving device can drive the central rotating column (13) to rotate around an axis; in a top-down view of the rectangular grid photovoltaic support system (1), a first virtual enclosure circle (17), a second virtual enclosure circle (16), and a third virtual enclosure circle (15) are equidistantly distributed from the inside to the outside with the central rotating column (13) as the center; The plurality of cross-shaped supports (2) within the enclosed range of the first virtual enclosed circle (17) are recorded as central area cross-shaped supports (2a); The plurality of cross-shaped supports (2) in the region between the first virtual enclosure (17) and the second virtual enclosure (16) are recorded as sandwich region cross-shaped supports (2b); The plurality of cross-shaped supports (2) in the region between the second virtual enclosure (16) and the third virtual enclosure (15) are recorded as edge region cross-shaped supports (2b); A plurality of radially distributed and taut windproof cables (11) are arranged within the enclosed range of the second virtual enclosed circle (16), the ends of the windproof cables (11) close to each other are fixedly connected to the outer wall of the central rotating column (13), and the ends of the windproof cables (11) far away from each other are fixedly connected to the central blocks (9) of the cross-shaped supports (2b) in the interlayer area; The active rotation of the central rotating column (13) causes the plurality of windproof cables (11) distributed radially to be gradually and forcibly wound around the central rotating column (13) in a spiral shape, so that the ends of the plurality of windproof cables (11) that are away from each other forcibly pull the plurality of sandwich area cross-shaped supports (2b), so that the plurality of sandwich area cross-shaped supports (2b) distributed in an enclosed shape all move gradually toward the central rotating column (13).

2. A grid-type photovoltaic support assembly according to claim 1, characterized in that: A plurality of cross-shaped supports (2) located at the outermost periphery of a rectangular grid-type photovoltaic support system (1) are connected to a fixed support via a traction rope (3).

3. A grid-type photovoltaic support assembly according to claim 2, characterized in that: A photovoltaic panel (12) is horizontally fixedly mounted on each cross-shaped support (2); a plurality of photovoltaic panels (12) form a rectangular photovoltaic array (31), and any adjacent photovoltaic panels (12) in the rectangular photovoltaic array (31) are arranged at intervals from each other, thereby forming a grid-like clearance gap (14) in the rectangular photovoltaic array (31).

4. A grid-type photovoltaic support assembly according to claim 3, characterized in that: A first pair of traction line guide wheels (4) and a second pair of traction line guide wheels (5) are rotatably mounted at the end of each structural arm (2a), and the traction rope (3) movably passes through the first pair of traction line guide wheels (4) and the second pair of traction line guide wheels (5).

5. A grid-type photovoltaic support assembly according to claim 4, characterized in that: Each structural arm (2a) of the cross-shaped support (2) is provided with a mounting hole (80) for fixing and mounting the photovoltaic panel (12).

6. A working method of a grid-type photovoltaic support assembly according to claim 5, characterized in that: The central rotating column (13) is controlled to rotate back and forth slowly and periodically around the axis.

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