Energy dissipation type photovoltaic support structure against extreme wind pressure

Abstract

The utility model discloses a kind of energy dissipation type photovoltaic support structures of resisting extreme wind pressure.Provide a kind of energy dissipation brace of built-in damping device.The brace includes sleeve, and the upper segment and lower segment of brace that can be relatively slid in sleeve are received in sleeve;First spring is equipped between the end portion of upper segment and lower segment of brace located in sleeve.When the brace encounters wind pressure and makes the brace be compressed, its upper segment and lower segment relatively move and compress first spring, impact kinetic energy is converted into elastic potential energy and is buffered dissipation.The utility model will significantly reduce peak load, thereby fundamentally improve the security and stability of photovoltaic support under bad wind condition.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, specifically to an energy-consuming photovoltaic support structure that can withstand extreme wind pressure. Background Technology

[0002] Photovoltaic support structures are key structures used to support and fix photovoltaic modules in solar photovoltaic power generation systems. Southwest China is a mountainous region, and the land used for photovoltaic support structures is primarily mountainous. In mountainous areas, the difference in temperature between day and night often creates valley winds that shift direction between the slopes and valleys. Under the influence of extreme and alternating valley winds, the safety of various support structures installed on mountains faces significant challenges. Photovoltaic support structures need sufficient rigidity and stability to withstand severe weather; however, greater rigidity also means a greater load to bear. Conventional support bracing can provide greater rigidity and load-bearing capacity, but its load-bearing capacity decreases significantly after buckling under compression. Utility Model Content

[0003] The purpose of this invention is to provide an energy-consuming photovoltaic support structure that can withstand extreme wind pressure, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An energy-consuming photovoltaic support structure that can withstand extreme wind pressure includes a support rod, purlins, and diagonal braces. The middle part of the purlin is connected to the upper end of the support rod. Diagonal braces are also provided between the purlins and the support rod. There are two diagonal braces, which are respectively connected between the middle parts of the purlins on the left and right sides and the support rod. A damping device is provided on the diagonal brace. The damping direction of the damping device is parallel to the direction of the diagonal brace. The force transmission inside the diagonal brace is transmitted through the diagonal brace.

[0006] Furthermore, the diagonal brace is divided into an upper section and a lower section, and the damping device includes a sleeve and a first spring;

[0007] The upper and lower sections of the diagonal brace are respectively provided with an upper limit head and a lower limit head at their ends located inside the sleeve;

[0008] The sleeve is provided with a first annular limiting block and a second annular limiting block at the outlets at both ends. The inner diameter of the first annular limiting block is larger than the outer diameter of the upper section of the diagonal brace, and the inner diameter of the second annular limiting block is larger than the outer diameter of the lower section of the diagonal brace.

[0009] The outer diameter of the upper limit head is larger than the inner diameter of the first annular limit block, and the outer diameter of the lower limit head is larger than the inner diameter of the second annular limit block. The upper limit head and the lower limit head are respectively inserted into the sleeve.

[0010] The upper limit position head and the lower limit position head are connected by a first spring.

[0011] Furthermore, the outer diameter of the upper limit head matches the inner diameter of the sleeve, a sliding hole is opened at the lower end of the upper limit head, the sliding hole is coaxial with the diagonal brace, the outer diameter of the lower limit head matches the inner diameter of the sliding hole, the lower limit head is slidably connected in the sliding hole, a third annular limiting block is provided at the opening of the sliding hole, the inner diameter of the third annular limiting block is smaller than the outer diameter of the lower limit head, and the first spring is set in the sliding hole.

[0012] Furthermore, it also includes a second spring, which is disposed between the upper limit head and the first annular limit block.

[0013] Furthermore, it also includes a third annular limiting block, which is disposed between the upper limit head and the second annular limiting block.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention replaces the traditional rigid bracing with an energy-dissipating device containing a built-in spring. When encountering extreme wind pressure, the structure no longer passively "bears" the load until buckling failure, but actively converts the instantaneous massive wind energy into storable and releaseable elastic potential energy through the controlled compression of the internal spring. This buffering process greatly prolongs the force's duration, thereby significantly reducing the peak load transmitted to the entire support and foundation, and avoiding destructive stress concentration. Ultimately, it transforms the traditional support's fragile "abrupt" buckling failure mode into a predictable and recoverable "progressive" flexible deformation, thus fundamentally improving the overall safety and stability of photovoltaic supports under complex and extreme wind conditions without significantly increasing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0016] Figure 2 This is a schematic diagram of the damping device of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example:

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0020] Please see the appendix Figure 1-2 This utility model provides a technical solution:

[0021] A photovoltaic support structure capable of withstanding extreme wind pressure includes purlins 1, support rods 2, and diagonal braces 3. Purlins 1 are used to mount photovoltaic panels, with their center horizontally connected to the top of the support rod 2. To ensure structural stability, purlins 1 and support rods 2 are reinforcedly connected by two diagonal braces 3, which are symmetrically arranged and connected to the middle of the support rod 2 and the lower surface of the purlins 1 on the left and right sides, respectively.

[0022] The core of this invention lies in the fact that the diagonal brace 3 is not a traditional rigid structure, but an energy-dissipating structure with a built-in damping device 4. The damping direction of the damping device 4 is parallel to the axial direction of the diagonal brace 3, so that the diagonal brace 3 can expand and contract through an internal mechanism when subjected to axial pressure or tension, thereby dissipating energy.

[0023] Specifically, the diagonal brace 3 consists of a lower section 401 and an upper section 402. The damping device 4 mainly consists of a hollow sleeve 403 and a built-in spring element. One end of the lower section 401 and the upper section 402 of the diagonal brace extend into both ends of the sleeve 403, respectively.

[0024] Inside the sleeve 403, the lower section 401 of the diagonal brace has a lower limiting head 4011 with a larger outer diameter at its end, and the upper section 402 of the diagonal brace has an upper limiting head 4021 with a larger outer diameter at its end. To prevent the upper and lower sections of the diagonal brace from coming out of the sleeve 403, the openings at both ends of the sleeve 403 contract inward to form a first annular limiting block 4031 and a second annular limiting block 4032. The inner diameter of the first annular limiting block 4031 is slightly larger than the outer diameter of the rod of the upper section 402 of the diagonal brace but smaller than the outer diameter of the upper limiting head 4021; similarly, the inner diameter of the second annular limiting block 4032 is slightly larger than the outer diameter of the rod of the lower section 401 of the diagonal brace but smaller than the outer diameter of the lower limiting head 4011. In this way, the upper limiting head 4021 and the lower limiting head 4011 are enclosed inside the sleeve 403, and can move relative to each other along the axial direction but cannot come apart.

[0025] To achieve pressure buffering, a first spring 404 is provided between the upper limit head 4021 and the lower limit head 4011. When the diagonal brace 3 is subjected to pressure, the upper and lower sections of the diagonal brace contract inward, compressing the first spring 404, thereby converting the impact kinetic energy into elastic potential energy.

[0026] In a preferred embodiment, the structure of the damping device 4 can be further optimized to achieve a more precise bidirectional buffering function. The upper limit head 4021 is designed in a piston shape, with its outer diameter precisely matching the inner diameter of the sleeve 403. Simultaneously, an axial sliding hole 40211 is provided inside the upper limit head 4021, and the outer diameter of the lower limit head 4011 matches the inner diameter of the sliding hole 40211, allowing the lower limit head 4011 to slide within the sliding hole 40211. A third annular stop block 40212 is provided at the opening of the sliding hole 40211, with an inner diameter smaller than the outer diameter of the lower limit head 4011, to prevent the lower limit head 4011 from dislodging from the sliding hole 40211. In this structure, the first spring 404 is disposed inside the more compact sliding hole 40211, located between the lower limit head 4011 and the bottom of the sliding hole 40211.

[0027] To counteract the upward suction force generated by wind pressure (i.e., tension on the diagonal brace), a second spring 405 can be added between the upper limit head 4021 and the first annular limiting block 4031. When the diagonal brace 3 is subjected to tension, the upper limit head 4021 will move towards the first annular limiting block 4031, thereby compressing the second spring 405 and achieving buffering and energy dissipation in the direction of tension.

[0028] Working principle and beneficial effects:

[0029] When the photovoltaic support encounters extreme wind pressure (whether downward or upward), the force will be transmitted along the purlin 1 to the diagonal brace 3.

[0030] 1. Under Compression (Wind Pressing Down): The immense wind pressure causes the diagonal brace 3 to bear axial pressure. The upper section 402 and lower section 401 of the diagonal brace move relative to each other under pressure, compressing the first spring 404 between them. The controlled compression process of the first spring 404 converts the instantaneous, enormous kinetic energy of the wind pressure into storable elastic potential energy, effectively prolonging the force's duration and acting as a "buffer." This significantly reduces the peak load transmitted to the support rod 2 and the foundation, avoiding the "abrupt" buckling failure that occurs in traditional rigid diagonal braces due to stress concentration.

[0031] 2. Under tension (wind generates upward suction): The strong upward force causes the diagonal brace 3 to bear axial tension. At this time, the upper limit head 4021 is pulled outward, starting to compress the second spring 405 located between it and the first annular limit block 4031. Similarly, this process also dissipates energy, preventing the connection point from being damaged by the instantaneous huge tension.

[0032] In summary, this invention cleverly alters the stress distribution mode of photovoltaic (PV) supports by replacing traditional rigid braces with an energy-dissipating brace featuring a built-in bidirectional spring buffer system. It no longer passively "bears" wind pressure but actively and flexibly absorbs and dissipates energy. This design transforms the traditional support's fragile "abrupt" buckling failure mode under extreme loads into a predictable, controllable, and recoverable "progressive" flexible deformation mode. Ultimately, without significantly increasing manufacturing costs, it fundamentally improves the overall safety, stability, and fatigue resistance of PV supports, especially those in mountainous areas, under complex and extreme wind conditions.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic support structure for resisting extreme wind pressure, comprising a support rod (2), purlins (1), and diagonal braces (3), wherein the middle part of the purlins (1) is connected to the upper end of the support rod (2), and diagonal braces (3) are provided between the purlins (1) and the support rod (2), wherein the diagonal braces (3) comprise two braces, and the two diagonal braces (3) are respectively connected between the middle parts of the purlins (1) and the support rod (2) on the left and right sides, characterized in that, The diagonal brace (3) is provided with a damping device (4), the damping direction of the damping device (4) is parallel to the direction of the diagonal brace (3), and the force inside the diagonal brace (3) is transmitted through the diagonal brace (3).

2. According to the structure of claim 1, the diagonal brace (3) is divided into an upper section (402) and a lower section (401), and the damping device (4) includes a sleeve (403) and a first spring (404). The upper section (402) and lower section (401) of the diagonal brace are respectively provided with an upper limit head (4021) and a lower limit head (4011) at their ends located inside the sleeve (403). The sleeve (403) has a first annular limiting block (4031) and a second annular limiting block (4032) at the outlets at both ends. The inner diameter of the first annular limiting block (4031) is larger than the outer diameter of the upper section (402) of the diagonal brace, and the inner diameter of the second annular limiting block (4032) is larger than the outer diameter of the lower section (401) of the diagonal brace. The outer diameter of the upper limit head (4021) is greater than the inner diameter of the first annular limit block (4031), and the outer diameter of the lower limit head (4011) is greater than the inner diameter of the second annular limit block (4032). The upper limit head (4021) and the lower limit head (4011) are respectively inserted into the sleeve (403). The upper limit head (4021) and the lower limit head (4011) are connected by a first spring (404).

3. According to the structure of claim 2, the outer diameter of the upper limit head (4021) matches the inner diameter of the sleeve (403), the lower end of the upper limit head (4021) is provided with a sliding hole (40211), the sliding hole (40211) is coaxial with the diagonal brace (3), the outer diameter of the lower limit head (4011) matches the inner diameter of the sliding hole (40211), the lower limit head (4011) is slidably connected in the sliding hole (40211), a third annular limit block (40212) is provided at the opening of the sliding hole (40211), the inner diameter of the third annular limit block (40212) is smaller than the outer diameter of the lower limit head (4011), and the first spring (404) is provided in the sliding hole (40211).

4. The structure according to claim 3 further includes a second spring (405), which is disposed between the upper limit head (4021) and the first annular limit block (4031).

5. The structure according to claim 3 further includes a third annular limiting block (40212), which is disposed between the upper limit head (4021) and the second annular limiting block (4032).

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