Connecting frame and flexible photovoltaic system

Abstract

The utility model discloses a connecting frame which comprises a connecting part, at least two locking blocks are arranged on the connecting part at intervals, the locking blocks and the connecting part are matched to form a closed locking area for a main cable to penetrate through and lock the main cable, and at least one side of the locking area is of an openable structure capable of allowing a non-end portion of the main cable to be placed in; the reinforcing part is fixedly connected to the side, facing the ground, of the connecting part, and the connecting part and the reinforcing part are of bent structures and are located on the same plane. According to the connecting frame provided by the utility model, at least two locking blocks are arranged on the connecting part so as to connect the main cables at different intervals and improve the integrity of the adjacent main cables, the reinforcing part is arranged on the same plane to reinforce the connecting part and improve the rigidity, and the reinforcing part is connected with the wind-resistant lock so as to improve the wind-resistant capability of the connecting frame; the overall structure of the connecting frame is simple, the opening structure of the locking block enables the connecting frame to be convenient to operate when the connecting frame is assembled with the main cable, and therefore the purposes of reducing the structural complexity and the installation cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a connecting frame and a flexible photovoltaic system. Background Art

[0002] With the clarification of the global carbon neutrality goal, photovoltaics is expected to lead the rapid development of renewable energy. With the development of the photovoltaic industry, flexible photovoltaic systems have shown great advantages in the construction of power stations under complex terrain. Flexible photovoltaics use steel strands as the main load-bearing cables (main cables), and the main cables are fixed by end brackets composed of steel beams, side anchors, etc. Since the span of the main cable is usually large and photovoltaic panels are connected to the main cable through connectors, the overall wind resistance is large. In windy weather, there is a risk of large shaking and damage to the system. Therefore, a wind-resistant system is usually installed in the span of the photovoltaic system. The wind-resistant system is often installed under the main cable, one end of which is fixedly connected to the ground, and the other end is fixedly connected to at least two main cables to enhance the integrity of the photovoltaic system and improve its wind resistance. However, in the current wind-resistant system, the connecting frame structure is relatively complex and difficult to assemble. The equipment cost and labor installation cost are high under the working conditions where the photovoltaic system covers a large area, which has an adverse impact on the economy of the photovoltaic system.

[0003] Therefore, how to optimize the connecting frame structure in the wind-resistant system to reduce equipment cost and installation cost is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a connecting frame to optimize the connecting frame structure in the wind-resistant system to reduce equipment cost and installation cost.

[0005] Another object of the present invention is to provide a flexible photovoltaic system including the above-mentioned connecting frame.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A connecting frame, comprising:

[0008] A connecting portion, wherein at least two locking blocks are arranged at intervals on the connecting portion, wherein the locking blocks cooperate with the connecting portion to form a closed locking area for the main cable to pass through and lock the main cable, and at least one side of the locking area is an openable structure capable of inserting a non-end position on the main cable;

[0009] The reinforcing portion is fixedly connected to a side of the connecting portion facing the ground, and both the connecting portion and the reinforcing portion are bent structures and are located on the same plane.

[0010] Preferably, in the above-mentioned connecting frame, the locking block includes a U-shaped bolt and a locking nut, and the open end of the U-shaped bolt is arranged through the connecting part and is threadedly connected to the locking nut so that the closed end thereof cooperates with the edge of the connecting part to clamp the main cable.

[0011] Preferably, the above-mentioned connecting frame further comprises a holder corresponding to the U-shaped bolt one by one, the holder is fixedly arranged on the connecting portion, and the wall surface of the opening side of the holder is an arc surface and is arranged toward the U-shaped bolt.

[0012] Preferably, in the above-mentioned connecting frame, each end connection point of the U-shaped bolt corresponds to two of the locking nuts.

[0013] Preferably, in the above-mentioned connecting frame, the reinforcing portion and the connecting portion are butted against each other only at their midpoints and at both ends, and the integral structure of the reinforcing portion and the connecting portion is a symmetrical structure.

[0014] Preferably, in the above-mentioned connecting frame, the middle area of ​​the connecting portion and the middle area of ​​the reinforcing portion are arranged to fit together and are fixedly connected by bolts.

[0015] Preferably, in the above-mentioned connecting frame, the middle area of ​​the connecting part and the middle area of ​​the reinforcing part are separately arranged, and the connecting frame also includes a connecting plate, which is simultaneously attached to the middle area of ​​the connecting part and the middle area of ​​the reinforcing part and is fixed by bolts respectively.

[0016] Preferably, in the above-mentioned connecting frame, the connecting portion and the reinforcing portion are both formed by bending a square tube, and the connecting portion and the reinforcing portion are combined into a symmetrical butterfly structure.

[0017] Preferably, in the above-mentioned connecting frame, the locking block is also provided on the side of the reinforcing portion facing the ground, and two locking blocks are symmetrically arranged on the reinforcing portion to lock with the steel wire rope connected to the ground.

[0018] A flexible photovoltaic system comprises a plurality of groups of parallel arranged main cables, wherein adjacent main cables are connected into an integral structure using a connecting frame as described in any one of the above embodiments, wherein the reinforcing portion on each connecting frame is fixedly connected to a ground anchor via two steel cables, and two adjacent ends of the connecting frames are fixedly connected into an integral structure via a support rod.

[0019] It can be seen from the above technical scheme that the connecting frame provided by the utility model has a locking block on the connecting part, and the locking block is assembled and connected with the connecting part to form a locking area for the main cable to pass through and lock the main cable, and a plurality of locking blocks can be provided so that the connecting part can lock two groups of main cables with different spacings, thereby improving the versatility of the connecting frame. At the same time, the setting structure of the locking block makes the locking area an open structure with at least one side capable of allowing the non-end position on the main cable to be placed, and the main cable does not need to pass through the locking area at the end, which enables the connecting frame to meet the purpose of adding or removing the connecting frame according to the needs of some areas after the photovoltaic system is overlapped; the reinforcement part is arranged coplanar with the connecting part to increase the rigidity of the connecting part and improve the wind resistance of the connecting frame, and strengthen the wind resistance of the main cable on the basis of keeping the main cable locked; at the same time, a hole can also be opened on the reinforcement part, so as to improve the integrity of the system and improve the wind resistance through the reinforcement part without destroying the structure of the connecting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the connecting frame provided in an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the locking block structure on the connecting part;

[0023] Figure 3 This is an exploded view of the locking block;

[0024] Figure 4 It is a schematic diagram of the connection state between the connecting frame and the main cable;

[0025] Figure 5 A schematic diagram of the photovoltaic system structure provided by an embodiment of the utility model;

[0026] Figure 6 for Figure 5 A schematic diagram of the connection structure of two adjacent connecting frames;

[0027] Figure 7 for Figure 5 Schematic diagram of the end structure of a single connecting frame;

[0028] Among them, 10-connecting part; 20-locking block; 210-U-bolt; 220-locking nut; 230-seat; 30-reinforcement part; 40-connecting plate; 50-main cable; 60 ground anchor; 70-support rod. DETAILED DESCRIPTION

[0029] The core of the utility model is to disclose a connecting frame to optimize the connecting frame structure in the wind-resistant system to reduce equipment cost and installation cost.

[0030] Another object of the present invention is to provide a flexible photovoltaic system including the above-mentioned connecting frame.

[0031] In order to make the technical personnel in this field better understand the present invention, the embodiments of the present invention are described below with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary for the solutions of the utility model described in the claims.

[0032] like Figure 1-7 As shown, the connecting frame provided by the embodiment of the utility model is mainly composed of two parts, namely the connecting part 10 and the reinforcing part 30, which cooperate to achieve efficient connection and locking functions. Specifically, the connecting part 10 is the core component of the connecting frame. At least two locking blocks 20 are arranged on the connecting part 10 at intervals. Each locking block 20 cooperates with the connecting part 10 to form a closed locking area. The locking area is used for the main cable 50 to pass through and lock the main cable 50. It should be noted that at least one side of the locking area is designed to be able to allow the non-main cable 50 on the main cable 50 to pass through. The openable structure is placed at the end position. The opening structure here can be a press-open structure that exists after the locking block 20 and the connecting part 10 are fixed, or the locking block 20 and the connecting part 10 can be designed as a detachable assembly structure to form an open locking area after the locking block 20 is disassembled. The purpose of the structural design here is to be able to add or release the connecting parts 10 at different positions on the main cable 50 at any time. The main cable 50 does not need to pass through the locking area by passing the end, but can be directly installed into the locking area from the side wall of the main cable 50, thereby reducing the difficulty of assembly.

[0033] The reinforcing portion 30 is fixedly connected to one side of the connecting portion 10 and faces the ground. The reinforcing portion 30 and the connecting portion 10 are both bent structures, and the reinforcing portion 30 and the connecting portion 10 are located on the same plane. The arrangement of the reinforcing portion 30 improves the overall strength and durability of the connecting frame. The entire connecting frame is less likely to flip under the action of wind, and has a stronger effect in resisting wind. At the same time, the reinforcing portion 30 can also allow a windproof lock to pass through or be connected to a pile on the ground through rigging, thereby providing additional support for the entire connecting frame.

[0034] Furthermore, in the connecting frame provided in the embodiment of the utility model, the locking block 20 can also be designed as an adjustable structure to be able to change the area of ​​the closed area, thereby adapting to main cables 50 of more sizes, or increasing the adjustment function of the locking force to meet different locking requirements; and on the connecting portion 10, two locking blocks 20 are provided to meet the connection of a pair of main cables 50. Similarly, more than two locking blocks 20 can be provided to meet the connection of two groups of main cables 50 with different spacings. In order to achieve the above functions, the connecting portion 10 can also be designed as a retractable structure to adapt to main cables 50 of different lengths, or multiple locking areas can be added to achieve multi-point locking.

[0035] The connecting frame provided by the embodiment of the utility model has a locking block 20 arranged on the connecting portion 10, and the locking block 20 is assembled and connected with the connecting portion 10 to form a locking area for the main cable 50 to pass through and lock the main cable 50, and a plurality of locking blocks 20 can be arranged so that the connecting portion 10 can lock two groups of main cables 50 with different spacings, thereby improving the universality of the connecting frame. At the same time, the arrangement structure of the locking block 20 makes the locking area an openable structure in which at least one side can be placed in a non-end position on the main cable 50, and the main cable 50 does not need to pass through the locking area at its end. domain, which enables the connection frame to meet the purpose of adding or removing the connection frame according to the needs of some areas after the photovoltaic system is overlapped; the reinforcement part 30 is arranged on the same plane as the connection part 10 to increase the rigidity of the connection part 10 and improve the wind resistance of the connection frame, and the wind resistance of the main cable 50 is strengthened on the basis of keeping the main cable 50 locked; at the same time, a hole can be opened on the reinforcement part 30, so as to connect with the wind-resistant lock or the ground pile through the reinforcement part 30 without destroying the structure of the connection part 10 to improve the integrity of the system and improve the wind resistance.

[0036] Furthermore, a sensor, such as a torque sensor, can be integrated in the locking block 20 on the connecting frame to monitor the stress condition of the main cable 50 in real time, and transmit the data to the monitoring system through the wireless communication module to realize intelligent monitoring and early warning.

[0037] Furthermore, in some embodiments of the present invention, the locking block 20 is composed of a U-bolt 210 and a locking nut 220. Specifically, the open end of the U-bolt 210 passes through the connecting portion 10 and is threadedly connected to the locking nut 220 to form an adjustable locking mechanism. The closed end of the U-bolt 210 cooperates with the edge of the connecting portion 10 to effectively clamp the main cable 50 and achieve a stable locking effect. The above structure allows the user to adjust according to the size of the main cable 50 and the required locking force, and the closed end of the U-bolt 210 cooperates closely with the edge of the connecting portion 10 to provide a strong clamping force to ensure that the main cable 50 will not slip or fall off under high load.

[0038] Taking into account that the contact between the main cable 50 of the cylindrical structure and the connecting part 10 will cause relative sliding and wear, in order to reduce the relative wear between the main cable 50 and the connecting part 10, the connecting frame provided by the embodiment of the utility model also includes a holder 230 corresponding to the U-bolt 210. The holder 230 is fixedly arranged on the connecting part 10, and the wall surface of the opening side thereof is an arc surface so as to directly contact the main cable 50. The setting of the holder 230 cooperates with the U-bolt 210 to form a circular locking area to limit and lock the main cable 50, thereby reducing the wear between the U-bolt 210, the holder 230 and the main cable 50, and extending the service life of the connecting frame.

[0039] In order to further optimize the above technical solution, in a specific embodiment of the present invention, each end connection point of the U-bolt 210 corresponds to two locking nuts 220, so that the U-bolt 210 has a double locking point, which increases the stability and reliability of the connecting frame. Even if one locking point fails, the other can still maintain the stability of the main cable 50.

[0040] As for the connection method between the reinforcing part 30 and the connecting part 10 in the connecting frame, the two are only connected through their respective midpoints and two end positions to form a simplified, multi-point connection method, and the connecting frame as a whole forms a symmetrical structure, rather than a long surface or line contact connection method. This design structure not only simplifies the manufacturing and assembly process, but also because the integrated structure of the reinforcing part 30 and the connecting part 10 is a symmetrical structure, the uniform distribution of force is achieved on the entire connecting frame.

[0041] It should also be noted that the multi-point connection method can form a plurality of enclosed cavity structures between the connecting portion 10 and the reinforcing portion 30, which can allow wind to pass through under windy weather conditions and reduce the wind resistance of the connecting frame.

[0042] As for the connection method between the connecting part 10 and the reinforcing part 30, in a specific embodiment of the utility model, in this embodiment, the middle area of ​​the connecting part 10 is arranged in a close fit with the middle area of ​​the reinforcing part 30, and a fixed connection is achieved by bolts passing through the connecting part 10 and the reinforcing part 30 at the same time, so as to ensure the rigidity and strength of the connecting frame. The tightly matched connecting part 10 and the reinforcing part 30 ensure a seamless connection between the two parts, and provide better load transfer capability.

[0043] In another specific embodiment of the utility model, the connecting frame further includes a connecting plate 40. In this embodiment, the middle area of ​​the connecting part 10 and the middle area of ​​the reinforcing part 30 are separately arranged, and the connecting plate 40 is simultaneously fitted with the middle area of ​​the connecting part 10 and the middle area of ​​the reinforcing part 30, and is fixed by bolts respectively. The introduction of the connecting plate 40 provides an additional fixing point for the connecting part 10 and the reinforcing part 30, thereby enhancing the stability of the entire structure. The connecting plate 40 can disperse the load applied to the connecting frame, reduce the pressure on a single component, and thus extend the service life of the connecting frame.

[0044] Furthermore, in the connecting frame provided in the embodiment of the utility model, the connecting part 10 and the reinforcing part 30 are both manufactured by a square tube bending forming process. The square tube has high stability and load-bearing capacity due to its structural characteristics, and provides high bending and torsion resistance, so that the connecting frame is not easy to deform when subjected to external force, and is easy to realize automated production. A symmetrical butterfly structure is formed by bending and combining, which is not only beautiful, but also the butterfly-shaped symmetrical structure makes the force on the connecting frame in all directions more uniform, thereby improving the overall stability and load-bearing capacity.

[0045] In order to improve the stability of the connecting frame when it is installed in the photovoltaic system, the connecting frame usually needs to be connected to the ground. In a specific embodiment of the utility model, a locking block 20 is also provided on the side of the reinforcement part 30 facing the ground. Two locking blocks 20 are symmetrically provided on a single reinforcement part 30 to lock the two steel wire ropes led out from the same positioning point on the ground, so that the two steel wire ropes starting from the same vertex form a stable triangular structure with the connecting frame, thereby improving the integrated reinforcement effect of the connecting frame on the main cable 50.

[0046] Furthermore, the opening structure on one side of the locking area can be designed as a push-opening structure on one side of the locking area. The push-opening structure facilitates the operator to manually open or close the locking area. At the same time, a barb is provided inside the locking area for reverse locking of the main cable 50 after the main cable 50 is inserted, thereby enhancing the fixation between the connecting frame and the main cable 50.

[0047] An embodiment of the utility model also provides a flexible photovoltaic system, which includes a plurality of groups of parallel arranged main cables 50, and adjacent main cables 50 are connected into an integrated structure using a connecting frame provided by any of the above embodiments; this design structure enables the entire photovoltaic system to have better integrity and stability, improves its wind resistance, and at the same time maintains a certain flexibility to adapt to different installation environments.

[0048] It should also be noted that in the photovoltaic system provided in the embodiment of the utility model, adjacent connecting frames are also connected into an integrated structure through a support rod 70 to improve the wind resistance of the entire photovoltaic system. Specifically, the reinforcement portion 30 in each connecting frame is fixedly connected to a single anchor 60 on the ground through two steel cables, and the end positions of the two adjacent connecting frames are fixed to the single support rod 70 by bolts or welding to form an integrated structure. The photovoltaic system improves its integrated structure through the support rod, and can better maintain a stable state under conditions with strong winds.

[0049] The terms "first", "second", "left side" and "right side" in the specification and claims of the utility model and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting frame, characterized in that: include: A connecting portion, wherein at least two locking blocks are arranged at intervals on the connecting portion, wherein the locking blocks cooperate with the connecting portion to form a closed locking area for the main cable to pass through and lock the main cable, and at least one side of the locking area is an openable structure capable of inserting a non-end position on the main cable; The reinforcing portion is fixedly connected to a side of the connecting portion facing the ground, and both the connecting portion and the reinforcing portion are bent structures and are located on the same plane.

2. The connecting frame according to claim 1, characterized in that: The locking block includes a U-shaped bolt and a locking nut. The open end of the U-shaped bolt is arranged through the connecting portion and is threadedly connected with the locking nut so that the closed end thereof cooperates with the edge of the connecting portion to clamp the main cable.

3. The connecting frame according to claim 2, characterized in that: It also includes a holder corresponding to the U-shaped bolt one by one, the holder is fixedly arranged on the connecting part, and the wall surface of the opening side of the holder is an arc surface and is arranged toward the U-shaped bolt.

4. The connecting frame according to claim 2, characterized in that: Each end connection point of the U-shaped bolt corresponds to two locking nuts.

5. The connecting frame according to claim 1, characterized in that: The reinforcing portion and the connecting portion are butted against each other only at their midpoints and at both ends, and the integral structure of the reinforcing portion and the connecting portion is a symmetrical structure.

6. The connecting frame according to claim 5, characterized in that: The middle area of ​​the connecting portion is fitted with the middle area of ​​the reinforcing portion and is fixedly connected by bolts.

7. The connecting frame according to claim 5, characterized in that: The middle area of ​​the connecting part is separately arranged from the middle area of ​​the reinforcing part, and the connecting frame further comprises a connecting plate, which is simultaneously attached to the middle area of ​​the connecting part and the middle area of ​​the reinforcing part and fixed respectively by bolts.

8. The connecting frame according to claim 1, characterized in that: The connecting portion and the reinforcing portion are both formed by bending a square tube, and the connecting portion and the reinforcing portion are combined into a symmetrical butterfly structure.

9. The connecting frame according to claim 1, characterized in that: The locking block is also arranged on the side of the reinforcement part facing the ground, and two locking blocks are symmetrically arranged on the reinforcement part to lock with the steel wire rope connected to the ground.

10. A flexible photovoltaic system, characterized in that: It comprises a plurality of groups of parallelly arranged main cables, and adjacent main cables are connected into an integral structure by using the connecting frame described in any one of claims 1 to 9, the reinforcing portion on each connecting frame is fixedly connected to a ground anchor via two steel cables, and the two adjacent ends of the connecting frames are fixedly connected into an integral structure via a strut.

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