Support node, middle support and flexible photovoltaic system

Abstract

The utility model discloses a support node, a middle support and a flexible photovoltaic system, the support node comprises a cushion block and a locking member, one side of the cushion block is attached to a cross beam on the support, and one side of the cushion block back to the cross beam is a cambered surface structure; the locking piece penetrates through the cross beam and is matched with the cambered surface structure of the cushion block to form a connecting hole, and the connecting hole allows the main cable to penetrate through and locks the main cable to the cushion block; the cambered surface structure is a partial cylindrical surface structure, and the axis of the cambered surface structure is perpendicular to the length direction of the main cable. The cushion blocks are used for supporting the main cable and matched with the locking pieces to lock the main cable, the cushion blocks reduce the corner folding risk of the main cable through the cambered surface structures, meanwhile, the main cable can be closer to the center of the cross beam, the stress of the cross beam is optimized, and the connection stability of the main cable is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic equipment technology, and in particular to a support node, a central support, and a flexible photovoltaic system. Background Technology

[0002] With the development of the photovoltaic industry, flexible photovoltaic systems have shown significant advantages in power plant construction in complex terrain. Flexible photovoltaic systems use steel strands as the main load-bearing cables (main cables), which are then fixed by end supports composed of steel beams and side anchors. Due to the large span of the main cables, multiple intermediate support structures are needed in the areas they cross to allow the cables to pass through and provide support. However, during installation, the main cables need to be tensioned to a certain level to stably support the photovoltaic panels. Mountainous terrain is complex, with multiple intermediate supports exhibiting undulating conditions, causing the main cables to bend. Bending at the nodes of these intermediate supports poses a risk of jamming, which not only makes tensioning difficult but also increases the risk of cable breakage due to skewed force at the bend, resulting in substantial economic losses.

[0003] Therefore, how to improve the stability of the main cable assembly and tensioning process is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a support node to improve the stability of the main cable assembly and tensioning process.

[0005] Another objective of this invention is to provide a central support that includes the aforementioned support nodes.

[0006] Another objective of this invention is to provide a flexible photovoltaic system comprising the aforementioned central support structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A support node includes a pad and a locking member. One side of the pad is fitted to a crossbeam on the support, and the side of the pad facing away from the crossbeam has an arc-shaped structure. The locking member passes through the crossbeam and cooperates with the arc-shaped structure of the pad to form a connecting hole. The connecting hole allows the main cable to pass through and locks the main cable to the pad.

[0009] Preferably, in the above-mentioned support node, the arc surface structure is a partially cylindrical structure, and the axis of the arc surface structure is perpendicular to the length direction of the main cable.

[0010] Preferably, the above-mentioned support node further includes a limiting part, which passes through the connecting hole and contacts the arc-shaped structure. The main cable is pressed against the limiting part by the locking member, and the limiting part engages and limits the main cable in the axial direction of the arc-shaped structure.

[0011] Preferably, in the above-mentioned support node, the limiting part is a steel wire rope, and at least two strands of the steel wire rope with axes parallel to the axis of the main cable pass through the connecting hole, and the main cable simultaneously contacts the two strands of the steel wire rope.

[0012] Preferably, in the above-mentioned support node, the wire rope extends beyond both sides of the crossbeam in the length direction of the main cable, and the areas of the wire rope extending beyond both sides of the crossbeam are respectively fixedly connected to the main cable by rope clamps.

[0013] Preferably, in the above-mentioned support node, two steel wire ropes are arranged in parallel, or...

[0014] The steel wire rope is a single strand that wraps around the crossbeam once inside the connection hole and then continues to extend.

[0015] Preferably, in the above-mentioned support node, the wire rope contacts the pad and presses the main cable to the locking member, and the line connecting the axes of the two wire ropes in contact with the main cable forms an isosceles triangle.

[0016] Preferably, in the above-mentioned support node, the wire rope contacts the locking member and presses the main cable against the pad, and the line connecting the axes of the two wire ropes in contact with the main cable forms an isosceles triangle. Preferably, in the above-mentioned support node, the side of the pad that fits against the crossbeam has a dimension larger than the crossbeam in the length direction of the main cable, and fits against the edge of the crossbeam through a bending structure.

[0017] Preferably, in the above-mentioned bracket node, the locking member is a U-bolt, and the bottom of the U-shaped structure of the U-bolt protrudes from the arc surface structure and forms the connecting hole with the arc surface structure.

[0018] A central support includes a support column and a crossbeam, wherein the crossbeam is fixedly mounted on the support column, and the crossbeam is provided with a plurality of support nodes as described in any of the above embodiments.

[0019] A flexible photovoltaic system includes a main cable, and multiple central supports as described in the above embodiments are spaced apart within the span area of ​​the main cable.

[0020] As can be seen from the above technical solution, the support node provided by this utility model has a pad on the crossbeam used to support the main cable, and the pad is connected to the crossbeam by a locking member to form a connection hole. When the main cable passes through the connection hole and is fixed by the locking member, the expansion and contraction of the connection hole can improve the ease of installation of the main cable. The locking member can connect the main cable with the arc-shaped structure on the pad. Compared with the structure in the prior art where the main cable directly contacts the crossbeam, it has a smooth transition structure, which avoids the problem of bending or knotting when the main cable has a height change between adjacent support nodes, thus preventing the cable from continuing to be tensioned. At the same time, compared with the structure in the prior art where a roller node is set, it has a lower cost and allows for a shorter distance between the main cable and the crossbeam. When the main cable is subjected to force, the lever arm between it and the crossbeam is shorter, thus giving the crossbeam and the main cable stronger structural stability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a central support structure with support nodes provided in an embodiment of this utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the mid-bracket node structure;

[0024] Figure 3 A front view of the main cable passing through the support node;

[0025] Figure 4 for Figure 3 A cross-sectional structural diagram of the locking component location;

[0026] Figure 5 A top view of the main cable passing through the support node;

[0027] Figure 6 A side view of a single central support structure;

[0028] Figure 7 for Figure 6 A schematic diagram of the rotated structure of region A in the diagram;

[0029] Figure 8 for Figure 7 A schematic diagram of the locking structure between the steel wire rope and the main cable in the connection hole.

[0030] Among them, 10-pad block; 110-arc surface structure; 20-locking part; 210-connecting hole; 30-limiting part; 310-steel wire rope; 40-rope clamp; 510-support column; 520-crossbeam; 60-main cable. Detailed Implementation

[0031] The core of this utility model lies in disclosing a support node to improve the stability of the main cable assembly and tensioning process.

[0032] Another core aspect of this utility model is to provide a central support including the aforementioned support nodes, and a flexible photovoltaic system including the aforementioned central support.

[0033] To enable those skilled in the art to better understand the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the invention as described in the claims.

[0034] like Figure 1 and Figure 2As shown, the support node provided in this embodiment of the present invention includes a pad 10 and a locking member 20. One side of the pad 10 is fitted to the crossbeam 520 on the support, while the side of the pad 10 facing away from the crossbeam 520 is an arc-shaped structure 110 to prevent the crossbeam 520 with sharp corners from directly contacting the main cable 60 and generating sharp corners during the tensioning of the main cable 60. Specifically, the pad 10 is fitted to the crossbeam 520 and fixedly connected to the crossbeam 520 as an integral structure. The arc-shaped structure 110 on the pad 10 can be a conical, cylindrical, or spherical arc-shaped structure 110. It should be noted that the purpose of the arc-shaped structure 110 is to avoid the bending and twisting of the main cable 60 when the support node is at different heights and the position of the main cable 60 needs to change in the height direction. Therefore, the arc-shaped structure 110 needs to have a rounded transition area in the length extension direction of the main cable 60. In some embodiments of this utility model, the arc surface structure 110 is designed as a partially cylindrical surface structure that is easy to process and assemble. That is, the arc surface structure 110 is a partial area of ​​a cylindrical surface, and the axis of the arc surface structure 110 is set at a preset angle to the length direction of the main cable 60. It should be noted that the arc surface structure 110 can achieve the transition to the main cable 60 by setting the axis of the arc surface structure 110 at a preset angle to the length direction of the main cable 60 instead of being parallel. In a preferred embodiment of this utility model, in order to make the main cable 60 have a more uniform transition effect on both sides of the crossbeam 520 and reduce the risk of the main cable 60 tilting and sliding, the axis of the arc surface structure 110 is set perpendicular to the length direction of the main cable 60. The main cable 60 can maintain a minimum contact area with the arc surface structure 110 of the pad 10. When the locking member 20 locks the main cable 60 onto the pad 10, the main cable 60 has a smaller movement space, thereby improving the structural stability of the main cable 60.

[0035] In the above embodiment, the locking member 20 is specifically a structure that passes through the crossbeam 520, and the locking member 20 can cooperate with the arc surface structure 110 of the pad 10 to form a connecting hole 210. It should be noted that the connecting hole 210 is an adjustable hole structure, which can expand and contract through the area where the locking member 20 passes through the crossbeam 520, so that the main cable 60 has a larger docking space to pass through the connecting hole 210, and then contract to lock the main cable 60. Based on the above structure, the main cable 60 has a larger assembly space and can easily pass through the connecting hole 210. At the same time, the locking member 20 enables the main cable 60 to connect with the arc-shaped structure 110 on the pad 10. Compared with the existing structure in which the main cable 60 directly contacts the crossbeam 520, it has a smooth transition structure, avoiding the problem of the main cable 60 bending or knotting when there is a height change between adjacent support nodes, which would prevent it from continuing to be tensioned. At the same time, compared with the existing structure with roller nodes, there is only the pad 10 between the main cable 60 and the crossbeam 520, which provides a shorter distance between the main cable 60 and the crossbeam 520. When the main cable 60 is subjected to force, the lever arm between it and the crossbeam 520 is shorter, which makes the crossbeam 520 and the main cable 60 have stronger structural stability. It should also be noted that the pad 10 can be made of aluminum alloy to provide good support and have a strong weight, thereby reducing the load on the crossbeam 520.

[0036] To further optimize the above technical solution, the support node provided in this embodiment of the utility model also includes a limiting part 30. The limiting part 30 is used to limit the swaying of the main cable 60. Specifically, the limiting part 30 is provided through the connecting hole 210. One side of it contacts the arc surface structure 110 of the pad 10, while the other side is used to contact and support the main cable 60. The main cable 60 is pressed to the limiting part 30 by the locking member 20. The limiting part 30 engages and limits the main cable 60 in the axial direction of the arc surface structure 110, so that when the main cable 60 is tensioned, it can only be adjusted along its length direction and will not sway along both sides of the length direction.

[0037] The limiting part 30 is designed to reduce the risk of swaying of the main cable 60 and to prevent wear and breakage caused by swaying at the support node. It can be achieved by providing a groove structure for the main cable 60 to embed, or by using a protruding structure to limit the swaying space of the main cable 60 within the connecting hole 210. In some embodiments of this utility model, such as... Figure 2 and Figure 3As shown, the limiting part 30 adopts a steel wire rope 310 structure. Specifically, at least two steel wire ropes 310 are passed through the connecting hole 210, and the axis of the steel wire ropes 310 is parallel to the axis of the main cable 60. The main cable 60 is in contact with both steel wire ropes 310. Since both the steel wire ropes 310 and the main cable 60 are cylindrical structures, the two steel wire ropes 310 can be stably located inside the connecting hole 210 due to the limiting components on both sides of the locking member 20. The main cable 60 can be inserted into the gap between the two steel wire ropes 310, and the risk of swaying on both sides in the length direction is reduced by the stacking and squeezing limiting method.

[0038] Furthermore, to ensure the limiting effect of the wire rope 310 on the main cable 60, it is preferable that the projection of the wire rope 310 along the length of the main cable 60 covers the crossbeam 520. That is, the length of the wire rope 310 needs to be greater than the width of the crossbeam 520. While limiting the main cable 60 within the connecting hole 210, the wire rope 310 extends beyond the connecting hole 210 along the length of the main cable 60, and has a partially overlapping area with the main cable 60. This structure increases the contact area between the wire rope 310 and the main cable 60 along the length of the main cable 60, so that when the main cable 60 extends or contracts along its length, the wire rope 310 can still remain within the limiting structure of the connecting hole 210, thus preventing the wire rope 310 from slipping out of the connecting hole 210 and losing its limiting effect on the main cable 60.

[0039] It should also be noted that the areas of the wire rope 310 extending beyond both sides of the crossbeam 520 are also fixedly connected to the main cable 60 via rope clamps 40, making the wire rope 310 and the main cable 60 a single integrated structure. This not only prevents the wire rope 310 from slipping out of the connection hole 210 (i.e., the rope clamps 40 limit and prevent slippage on one side of the wire rope 310), thus improving the stability of the wire rope 310 in limiting the main cable 60 within the connection hole 210), but also allows for a larger cross-sectional area at the support node. The fixing of the wire rope 310 strengthens the main cable 60 and expands its cross-section, resulting in greater rigidity at the support node. This reduces the risk of bending of the main cable 60 while increasing its load-bearing capacity within the connection hole 210, leading to a more stable assembly effect for the main cable 60.

[0040] It should be further explained that at least two rope clamps 40 are preferably installed at intervals on the side where the wire rope 310 extends out of the crossbeam 520. The specific number is determined according to the extension length of the wire rope 310, ensuring that the installation of the rope clamps 40 can maintain a stable fit between the wire rope 310 and the main cable 60. The presence of at least two rope clamps 40 allows them to serve as backups for each other, preventing the wire rope 310 from detaching and losing its restraining and structural reinforcement effect on the main cable 60 if a single rope clamp 40 fails.

[0041] In addition, it is preferable that the steel wire ropes 310 located on both sides of the crossbeam 520 in the length direction of the main cable 60 are of equal length and are fixedly connected to the main cable 60 by symmetrically arranged rope clamps 40, so that the structure on both sides of the crossbeam 520 has better uniformity and stability.

[0042] Furthermore, in the support node provided in this embodiment of the present invention, the steel wire ropes 310 can be two parallel wire ropes, which can be in contact or spaced apart. They pass through the connecting hole 210 in a parallel state, and the main cable 60 is disposed between the two steel wire ropes 310 and simultaneously in contact with both steel wire ropes 310 to achieve a limiting effect. In some embodiments of the present invention, in order to reduce the number of installation parts, such as Figure 3 and Figure 4 As shown, a single steel wire rope 310 is provided, and the single steel wire rope 310 extends along the length direction after wrapping around the crossbeam 520 once in the area within the connecting hole 210. That is, in the length direction of the main cable 60, the single steel wire rope 310 can extend to both sides of the crossbeam 520 and be fixedly installed with the main cable 60 respectively. Its loop structure around the crossbeam 520 can form a two-loop structure within the connecting hole 210, thereby achieving the effect of limiting the sway of the main cable 60.

[0043] Based on the above embodiments, the wire rope 310 and the main cable 60 are locked together within the connecting hole 210, and they have different relative position arrangements. In some embodiments of this utility model, such as Figure 6 , Figure 7 and Figure 8 As shown, the wire rope 310 serves as an intermediate structure to support the main cable 60 based on the pad 10. That is, the wire rope 310 supports the main cable 60 and, during the process of the connection hole 210 narrowing and locking, presses the main cable 60 onto the locking member 20. At this time, the main cable 60 only contacts the locking member 20 and the wire rope 310, forming a stable triangular structure with the wire rope 310. To improve the stability of the wire rope 310 in limiting and supporting the main cable 60, in some embodiments of this utility model, the line connecting the axes of the main cable 60 and the two wire ropes 310 in contact with it forms an isosceles triangle. Specifically, on the cross-section along the length of the main cable 60, the axis of the main cable 60 and the axes of the two wire ropes 310 are three points. Connecting these three points as vertices forms an isosceles triangle structure with the axis of the main cable 60 as the vertex. The supporting force arms of the two wire ropes 310 on the main cable 60 are similar, which can provide a more uniform supporting force and reduce the risk of the main cable 60 sliding along one side of the wire rope 310.

[0044] In other embodiments of this utility model, such as Figure 3 and Figure 4As shown, the wire rope 310 serves as a filling structure at the top of the main cable 60, contacting the locking member 20 and filling the area between the main cable 60 and the locking member 20. This ensures the main cable 60 remains in contact with the pad block 10. The wire rope 310 is positioned in the gap between the main cable 60 and the locking member 20. During the tightening process of the connecting hole 210, the wire rope 310 gradually presses the main cable 60 against the pad block 10, thus stably positioning the main cable 60 on the pad block 10. Simultaneously, the axes of the two wire ropes 310 in contact with the main cable 60 can form an isosceles triangle to enhance the locking effect of the wire rope 310 on the main cable 60.

[0045] It should be further explained that in some other embodiments of this utility model, the different specifications of the locking member 20 can also achieve the following: the wire rope 310 presses the main cable 60 from both sides toward the axis of the main cable 60, and the main cable 60 contacts the locking member 20 and the pad 10 at the same time. The wire rope 310 fills the area on both sides of the main cable 60 to maintain the locked state of the main cable 60.

[0046] Furthermore, since the pad 10 is the foundation of the support structure of the main cable 60 on the crossbeam 520, in some embodiments of this utility model, the pad 10 is fitted to one side of the crossbeam 520, and its dimension in the length direction of the main cable 60 is larger than the width dimension of the crossbeam 520. This allows the pad 10 to surround one side wall of the crossbeam 520 in the length direction of the main cable 60, thus having a larger contact area and improving the fitting effect of the pad 10. In addition, to reduce the weight of the support node, the arc-shaped protrusion structure of the pad 10 can be set as a cavity, and a reinforcing rib can be set inside it to reduce the weight of the pad 10 while satisfying the support effect for the main cable 60.

[0047] Furthermore, in some embodiments of this utility model, the locking member 20 is a U-bolt. The U-bolt has stable structural strength and sufficient ease of assembly. Specifically, the crossbeam 520 has holes for the two sides of the U-bolt to pass through, and the bottom of the U-shaped structure of the U-bolt protrudes from the arc surface structure 110 of the pad 10 to form a connecting hole 210 for the main cable 60 to pass through. The passage area of ​​the connecting hole 210 can be adjusted by pushing or pulling out the U-bolt to facilitate the assembly and locking of the main cable 60. The open side of the U-bolt can pass through one or two layers of the sidewall of the crossbeam 520. Preferably, the open side of the U-bolt passes through two layers of the sidewall of the crossbeam 520, allowing the operator to perform the tightening operation from outside the crossbeam 520, thus providing a larger tool operating space and improving the convenience of locking and assembling the main cable 60 at the support node.

[0048] Furthermore, such as Figure 1 and Figure 5As shown, this embodiment of the present invention also provides a central support structure, which includes a support column 510 for fixed connection to the ground, and a crossbeam 520 fixedly mounted on the support column 510. Specifically, the crossbeam 520 is provided with a plurality of support nodes provided in any of the above embodiments. It should be noted that the support nodes are configured according to the number of photovoltaic panels and the load-bearing capacity of the crossbeam 520. The plurality of support nodes are spaced apart so that the main cables 60 are spaced apart to meet the load-bearing requirements of the photovoltaic panels. Furthermore, since the above support nodes possess the technical effects provided in any of the above embodiments, this central support structure also possesses the above technical effects, which will not be elaborated upon further here.

[0049] Furthermore, this utility model embodiment also provides a flexible photovoltaic system, including a photovoltaic panel and a main cable 60 for supporting the photovoltaic panel. The flexible photovoltaic system has multiple central supports provided in the above embodiments spaced apart in the span area of ​​the main cable 60 to support the main cable 60 in sections and meet the span requirements of the main cable 60. Since the above central supports have the technical effects provided by any of the above embodiments, the flexible photovoltaic system also has the above technical effects, which will not be repeated here.

[0050] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed, and is not intended to limit this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. The scope of this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A support node, characterized in that, The device includes a pad and a locking component. One side of the pad is fitted to a crossbeam on the support, and the side of the pad facing away from the crossbeam has an arc-shaped structure. The locking component passes through the crossbeam and cooperates with the arc-shaped structure of the pad to form a connecting hole. The connecting hole allows the main cable to pass through and locks the main cable to the pad.

2. The support node as described in claim 1, characterized in that, The arc-shaped structure is a partially cylindrical structure, and the axis of the arc-shaped structure is perpendicular to the length direction of the main cable.

3. The support node as described in claim 1, characterized in that, It also includes a limiting part, which passes through the connecting hole and contacts the arc-shaped structure. The main cable is pressed against the limiting part by the locking member, and the limiting part engages and limits the main cable in the axial direction of the arc-shaped structure.

4. The support node as described in claim 3, characterized in that, The limiting part is a steel wire rope, and at least two strands of the steel wire rope with axes parallel to the axis of the main cable pass through the connecting hole, and the main cable simultaneously contacts the two strands of the steel wire rope.

5. The support node as described in claim 4, characterized in that, The wire rope extends beyond both sides of the crossbeam in the length direction of the main cable, and the areas of the wire rope extending beyond both sides of the crossbeam are respectively fixedly connected to the main cable by rope clamps.

6. The support node as described in claim 4, characterized in that, Two steel wire ropes are arranged in parallel, or... The steel wire rope is a single strand that wraps around the crossbeam once inside the connection hole and then continues to extend.

7. The support node as described in claim 4, characterized in that, The steel wire rope contacts the pad and presses the main cable to the locking member, and the line connecting the axes of the two steel wire ropes in contact with the main cable forms an isosceles triangle.

8. The support node as described in claim 4, characterized in that, The steel wire rope contacts the locking member and presses the main cable against the pad block. The line connecting the axes of the two steel wire ropes in contact with the main cable forms an isosceles triangle.

9. The support node as described in claim 1, characterized in that, The pad is attached to one side of the crossbeam, which is larger than the crossbeam in the length direction of the main cable, and is attached to the edge of the crossbeam by a bending structure.

10. The support node as described in claim 1, characterized in that, The locking component is a U-bolt, and the bottom of the U-shaped structure of the U-bolt protrudes from the arc-shaped structure and forms the connecting hole with the arc-shaped structure.

11. A central support structure, characterized in that, It includes a support column and a crossbeam, the crossbeam being fixedly mounted on the support column, and the crossbeam being provided with a plurality of support nodes as described in any one of claims 1-10.

12. A flexible photovoltaic system, characterized in that, It includes a main cable, and a plurality of central supports as described in claim 11 are provided at intervals within the span area of ​​the main cable.

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