A three-dimensional truss wind protection system

Abstract

The present application relates to a kind of three-dimensional truss wind protection system, belong to photovoltaic support technical field, comprising: multiple photovoltaic supports;Ground support, multiple photovoltaic supports are connected to ground support;Underground embedded part and connecting line, multiple photovoltaic supports are connected underground embedded part by connecting line respectively.The present application is connected by setting connecting line of photovoltaic support and underground embedded part, when wind load is applied to photovoltaic support, connecting line can be tensioned, to convert part even most horizontal wind load and uplift force directly into pull force to underground embedded part, create a efficient force transmission path independent of support main structure, directly anchor into ground from upper portion, realize the multi-path dispersion transmission of load, improve the overall wind stability of system.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic support technology, specifically relating to a three-dimensional truss windproof system. Background Technology

[0002] In the field of photovoltaic power generation, photovoltaic (PV) support structures are crucial infrastructure that supports PV modules and ensures their stable operation. Their wind resistance directly affects the safety and lifespan of the power station. Currently, mainstream wind-resistant technologies mainly focus on strengthening the structural rigidity and strength of the support structures themselves, such as using larger profiles and adding diagonal braces and crossbeams. These methods essentially passively resist wind loads by increasing the local or overall rigidity of the structure through "hard resistance."

[0003] However, existing passive wind-resistant methods that rely on their own stiffness bear the wind load entirely through the main support structure and its local foundation, resulting in concentrated force flow and a single force transmission path. They lack a mechanism to efficiently and directly distribute the wind load from the superstructure to deeper or wider areas of the foundation. Summary of the Invention

[0004] To address the problem that existing photovoltaic (PV) support systems rely on their own rigidity for passive wind resistance, with the main structure and local foundation bearing the wind load, resulting in concentrated force flow, a single force transmission path, and a lack of mechanisms to efficiently and directly distribute the wind load from the superstructure to deeper or wider areas of the foundation, this solution provides a three-dimensional truss wind protection system.

[0005] The objective of this invention can be achieved through the following technical solutions: A three-dimensional truss windproof system includes: multiple photovoltaic brackets; a ground support component, wherein the multiple photovoltaic brackets are all connected to the ground support component; an underground embedded component and a connecting line, wherein the multiple photovoltaic brackets are respectively connected to the underground embedded component through the connecting line.

[0006] In a preferred embodiment of the present invention, the photovoltaic support includes a fulcrum portion, a first connecting portion, a second connecting portion, and a apex portion; the fulcrum portion is connected to the ground support member; the two ends of the first connecting portion are respectively connected to the fulcrum portion and the apex portion; the two ends of the second connecting portion are respectively connected to adjacent apex portions. The vertex portion is provided in multiple ways, and the fulcrum portion is provided in one way.

[0007] As a preferred embodiment of the present invention, the photovoltaic support is in the form of a triangular pyramid structure.

[0008] As a preferred embodiment of the present invention, multiple connecting lines are provided, and each of the multiple connecting lines corresponds to one of the multiple vertex portions; each connecting line is respectively connected to the corresponding vertex portion and the underground embedded part.

[0009] As a preferred embodiment of the present invention, the fulcrum is rotatably connected to the ground support; the connecting line includes a shape memory alloy actuator, which passes through the vertex portion, and both ends of the shape memory alloy actuator are connected to the underground embedded part; the underground embedded part is provided with a circuit board, and the shape memory alloy actuator is electrically connected to the circuit board.

[0010] As a preferred embodiment of the present invention, the three-dimensional truss windproof system further includes a wind speed sensor and a wind direction sensor, both of which are electrically connected to the circuit board. The wind speed sensor is used to detect the current wind speed, and the wind direction sensor is used to detect the current wind direction. When the current wind speed is greater than or equal to a first set threshold, the circuit board is controlled to energize or de-energize each of the shape memory alloy actuators, so that the photovoltaic bracket tilts toward the current wind direction. When the current wind speed is less than the first set threshold, the circuit board is controlled to de-energize all the shape memory alloy actuators so that the photovoltaic bracket can be reset.

[0011] As a preferred embodiment of the present invention, the connecting wire further includes a pre-tensioning spring, which is sleeved on or parallel to the shape memory alloy actuator to provide pre-tension to the connecting wire.

[0012] In a preferred embodiment of the present invention, the fulcrum portion and the ground support member are rotatably connected via a ball joint mechanism, the ball joint mechanism comprising: The ball head is located at the bottom end of the fulcrum portion; A ball socket is provided on the ground support and is adapted to the ball head; Multiple radial locking elements are evenly arranged in the ball socket along the circumferential direction, and the radial locking elements are movably arranged along the radial direction of the ball socket; A driver, electrically connected to the circuit board, is used to drive the radial locking member to move radially along the ball socket; When it is necessary to adjust the posture of the photovoltaic bracket, the driver is controlled to drive all the radial locking members to move radially outward along the ball socket, so that the ball joint mechanism is in a free motion state; When the photovoltaic bracket posture adjustment is completed, or when the current wind speed exceeds a second set threshold higher than the first set threshold, the driver is controlled to drive all the radial locking members to move radially inward along the ball socket and press the ball head, so that the ball hinge mechanism is in a locked state.

[0013] As a preferred embodiment of the present invention, the radial locking member is a locking pin or an arc-shaped friction block, and the shape of its pressing end face matches the spherical curvature of the ball head.

[0014] As a preferred embodiment of the present invention, the three-dimensional truss windproof system further includes a connecting rod, and adjacent photovoltaic supports are connected by the connecting rod.

[0015] The beneficial effects of this invention are as follows: This invention provides a three-dimensional truss windproof system. By setting up connecting lines between the photovoltaic support and the underground embedded parts, the connecting lines can be tensioned when wind loads are applied to the photovoltaic support. This directly converts part or even most of the horizontal wind load and uplift force into tension on the underground embedded parts, creating an efficient force transmission path that is independent of the main support structure and directly anchored into the ground from the top. This achieves multi-path distributed transmission of loads and improves the overall wind resistance stability of the system. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the first structure of a three-dimensional truss windproof system according to the present invention; Figure 2 This is a schematic diagram of the second structure of a three-dimensional truss windproof system according to the present invention; Figure 3 This is a schematic diagram of the first structure of the ball joint mechanism in a three-dimensional truss windproof system of the present invention; Figure 4 This is a schematic diagram of the second structure of the ball joint mechanism in a three-dimensional truss windproof system of the present invention.

[0018] Explanation of main symbols In the figure: 10, photovoltaic bracket; 11, fulcrum; 12, apex; 13, first connecting part; 14, second connecting part; 20, ground support component; 30, underground embedded part; 40, connecting line; 50, anchoring line; 60, connecting rod; 70, ball joint mechanism; 71, ball head; 72, ball socket; 73, radial locking component. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figure 1-4This embodiment provides a three-dimensional truss windproof system, including: multiple photovoltaic brackets 10; ground support 20, with the multiple photovoltaic brackets 10 all connected to the ground support 20; underground embedded parts 30 and connecting lines 40, with the multiple photovoltaic brackets 10 respectively connected to the underground embedded parts 30 through the connecting lines 40.

[0021] For example, the photovoltaic bracket 10 is a spatial support structure for carrying and fixing photovoltaic modules. It should have the structural strength, stability and installation interface to support the photovoltaic panels, and is usually constructed of metal profiles such as steel by welding or bolting.

[0022] For example, ground support 20 refers to a foundation structure fixedly installed on the ground surface to provide initial positioning and support for photovoltaic bracket 10. It can be an independent foundation pier, strip foundation or pile foundation, thereby initially anchoring photovoltaic bracket 10 to the ground and bearing part of the vertical load.

[0023] For example, the underground embedded part 30 refers to the anchoring structure pre-embedded in the foundation soil or rock to provide a strong and reliable anchoring point against pull-out and horizontal forces. For example, it can be a gravity concrete block, a helical anchor, or an anchor rod implanted in the rock layer, thereby resisting the huge pull-out force and horizontal force transmitted by the connecting line 40.

[0024] For example, in this embodiment, the connecting line 40 is used to establish a direct mechanical connection between the photovoltaic support 10 and the underground embedded part 30. It should have high tensile strength, weather resistance and a certain degree of flexibility. For example, it can be a steel cable, a high-strength synthetic fiber rope or a composite cable containing intelligent drive elements. Its core function is to be tensioned and stretched when the photovoltaic support 10 is displaced or has a displacement trend due to wind load, so as to directly transmit the force to the deep underground.

[0025] It is understandable that by adding a connecting line 40 connecting the photovoltaic support 10 and the underground embedded part 30, when wind load acts on the photovoltaic support 10, part of the load no longer relies entirely on the connection between the bottom of the support and the ground support 20 to resist it. Instead, it is directly and quickly dispersed and introduced into the depth of the foundation through the tensioned connecting line 40 in the form of tension. This effectively decomposes the complex stress concentrated at the root of the support in the traditional system and transforms it into a simple tensile force that is easier for the foundation to bear. Thus, the structural stress is optimized from the perspective of force transmission mechanism, and the overall wind resistance efficiency and stability of the system are improved.

[0026] As a preferred embodiment of the present invention, the photovoltaic support 10 includes a fulcrum portion 11, a first connecting portion 13, a second connecting portion 14, and a vertex portion 12; the fulcrum portion 11 is connected to the ground support member 20; the two ends of the first connecting portion 13 are respectively connected to the fulcrum portion 11 and the vertex portion 12; the two ends of the second connecting portion 14 are respectively connected to adjacent vertex portions 12; wherein, there are multiple vertex portions 12 and one fulcrum portion 11.

[0027] For example, the fulcrum 11 is the basic node connecting the photovoltaic bracket 10 and the ground support 20. It can be set near the bottom geometric center or the center of force of the photovoltaic bracket 10. It has a connection interface that matches the ground support 20, such as a flange, a hinged lug, or a ball joint base, for transmitting the vertical load, horizontal force, and bending moment of the bracket.

[0028] For example, the vertex portion 12 is located in the upper space of the photovoltaic support 10. Multiple vertex portions 12 are discretely distributed in space, collectively defining the top profile and load-bearing boundary of the photovoltaic support 10. Each vertex portion 12 can be designed with connecting holes or connectors for reliably connecting the first connecting portion 13, the second connecting portion 14, and the connecting line 40, serving as a hub for distributing and transferring the upper load to the connecting line 40.

[0029] For example, the first connecting portion 13 is an inclined rod connecting the fulcrum portion 11 and the single vertex portion 12, and multiple first connecting portions 13 extend radially from the single fulcrum portion 11 to each vertex portion 12. For example, the second connecting portion 14 is a rod connecting any two adjacent vertex portions 12, such that multiple vertex portions 12 are interconnected to form a closed spatial polygon. Specifically, the first connecting portions 13 and the second connecting portions 14 together constitute a spatial force-bearing skeleton starting from the fulcrum portion 11 and ending at the network of vertex portions 12.

[0030] It is understandable that the load from the top can be directly transmitted to the support part 11 in the form of axial force through the first connection part 13, or it can be redistributed and balanced among the vertex parts 12 through the second connection part 14, so that the internal force distribution is more uniform. Furthermore, the multiple vertex parts 12 provide discrete and reasonable upper anchor points for the setting of the connecting line 40, so that the connecting line 40 system can work together with the main truss to jointly constrain the displacement of the support from multiple directions, which greatly enhances the spatial stability and anti-lateral displacement capability of the structure.

[0031] As a preferred embodiment of the present invention, the photovoltaic support 10 has a triangular pyramidal structure.

[0032] For example, the fulcrum 11 is the only vertex of the triangular pyramid structure that contacts the ground, i.e., the tip of the pyramid, while the other three vertices 12 form the three corner points of the base triangle of the pyramid. The first connecting part 13 is the three edges connecting the tip of the pyramid to each corner point of the base, and the second connecting part 14 is the three edges connecting the three corner points of the base, thus forming a unit structure with four nodes and six rods.

[0033] It is understandable that the triangular structure is the most stable planar figure in geometry, while the triangular pyramid is the simplest and most stable spatial body composed of triangles.

[0034] In a preferred embodiment of the present invention, multiple connecting lines 40 are provided, and each connecting line 40 corresponds one-to-one with a plurality of vertex portions 12; each connecting line 40 is connected to the corresponding vertex portion 12 and the underground embedded part 30. It should be noted that in this embodiment, all connecting lines 40 are connected to the same underground embedded part 30.

[0035] For example, the photovoltaic support 10 is a triangular pyramid structure with three vertices 12, and correspondingly, three connecting lines 40. Each connecting line 40 independently connects a vertex 12 to an embedded part, thus providing independent, direct, and deeply buried anchoring constraints for the three corner points of the entire support in space. Specifically, this one-to-one correspondence means that any force on any vertex 12 can be independently transmitted to the depths of the earth through its dedicated connecting line 40, without needing to go around through other members or vertices of the support, greatly improving force transmission efficiency and reducing internal force loss. At the same time, the three connecting lines 40 are distributed in a triangle in space, matching the triangle on the base of the triangular pyramid, together forming a stable spatial anchoring system from the high-altitude vertex to the underground anchor point, which can effectively resist tensile and torsional forces from different directions.

[0036] For example, the three-dimensional truss windproof system of this embodiment also includes anchor lines 50, one end of which is connected to the support point 11, and the other end is connected to the underground embedded part 30. For example, multiple anchor lines 50 are provided, and multiple anchor lines 50 are provided in a one-to-one correspondence with multiple photovoltaic brackets 10.

[0037] As a preferred embodiment of the present invention, the fulcrum 11 is rotatably connected to the ground support 20; the connecting line 40 includes a shape memory alloy actuator, which passes through the vertex 12, and both ends of the shape memory alloy actuator are connected to the underground embedded part 30; the underground embedded part 30 is provided with a circuit board, and the shape memory alloy actuator is electrically connected to the circuit board.

[0038] For example, shape memory alloy actuators refer to wires, rods, or strips made of alloy materials with shape memory effects (such as nickel-titanium alloys), which have the characteristic of "thermoelastic martensitic phase transformation." Specifically, at ambient temperature (martensitic phase), it can be stretched and deformed; when heated to above its phase transformation temperature, it strongly recovers to its pre-memorized shortened shape (austenitic phase), thereby generating significant contraction force and displacement. In this embodiment, the shape memory alloy actuator serves as the power segment of the connecting line 40, with both ends reliably connected to the underground embedded part 30 through insulated and weather-resistant terminals; when the circuit board controls its energization, it contracts upon heating, thereby generating a huge tensile force, actively pulling the apex portion 12 it passes through, becoming a connecting element that drives the posture change of the photovoltaic bracket 10.

[0039] For example, the circuit board integrated within the underground embedded component 30 is sealed and installed in a waterproof and corrosion-resistant housing. For example, the circuit board is connected to an external power supply and upper-level controller via cable or wireless means, and is also connected to various shape memory alloy actuators and sensors via independent lines. Specifically, the circuit board has pre-installed control logic that can independently and precisely control the on / off state, current magnitude, and duration of one or more connected shape memory alloy actuators based on received commands or sensor signals, thereby adjusting their contraction amount and force.

[0040] As a preferred technical solution of the present invention, the three-dimensional truss windproof system also includes a wind speed sensor and a wind direction sensor. Both the wind speed sensor and the wind direction sensor are electrically connected to the circuit board. The wind speed sensor is used to detect the current wind speed, and the wind direction sensor is used to detect the current wind direction.

[0041] For example, wind speed and wind direction sensors are installed on the apex 12 or the second connecting part 14 of the photovoltaic bracket 10 to accurately sense the wind environment at its location. Simultaneously, the wind speed and wind direction sensors transmit the real-time monitored wind speed and direction electrical signals to a circuit board within the underground embedded part 30. The control program built into the circuit board continuously compares the wind speed value with a preset first threshold. For instance, when the current wind speed is greater than or equal to the first threshold, the control circuit board energizes (heats) or de-energizes (cools) each shape memory alloy actuator. By adjusting the contraction force and length of each shape memory alloy actuator, the photovoltaic bracket 10 as a whole generates a controllable tilt angle towards the current wind direction, thus tilting the photovoltaic bracket 10 towards the current wind direction.

[0042] Understandably, the first set threshold is a pre-set critical value for safe wind speed based on local wind load specifications, the safety factor of the support structure, and the wind resistance of the photovoltaic modules. Energizing the shape memory alloy actuators causes them to heat to the austenitic phase, resulting in contraction deformation and tensile force; de-energizing causes the shape memory alloy actuators to gradually cool back to the martensitic phase, reducing their stiffness and stretching under external tensile force. Therefore, by coordinating the power supply and de-energizing of multiple shape memory alloy actuators via a circuit board, the attitude of the photovoltaic support 10 can be precisely controlled.

[0043] For example, when the strong wind passes and the wind speed sensor detects that the current wind speed is less than a first set threshold, the control circuit board will execute a power-off command on all shape memory alloy actuators. For instance, when the current wind speed is less than the first set threshold, the control circuit board will power off all shape memory alloy actuators to reset the photovoltaic bracket 10.

[0044] Understandably, at this point, all actuators begin to cool due to the cessation of heating, and their material phase transforms back to martensitic phase, macroscopically exhibiting a stretchable, low-stiffness state. Under the combined action of the photovoltaic support 10's own weight, structural elastic restoring force, and any possible reset auxiliary mechanism, the support will rotate around the fulcrum 11, driving each actuator to passively extend, thereby gradually restoring the entire photovoltaic support 10 structure to its original posture, perpendicular to the horizontal plane or at a preset optimal power generation angle. It should be explained that in this embodiment, resetting the photovoltaic support 10 refers to the process of restoring it from a wind-resistant tilted posture to a normal power generation working posture, ensuring the system's rapid self-recovery and continuous operation capability after a wind disaster. Here, the normal power generation working posture of the photovoltaic support 10 refers to the posture where the line connecting its center position to the fulcrum 11 is perpendicular to the ground support 20.

[0045] As a preferred embodiment of the present invention, the connecting wire 40 further includes a pre-tensioning spring, which is sleeved on or parallel to the shape memory alloy actuator to provide pre-tension to the connecting wire 40.

[0046] For example, the preload spring is a compression spring, tension spring, or torsion spring, installed on the same axis or parallel side of the shape memory alloy actuator. By setting the preload spring, it is in a compressed state at the initial installation of the connecting wire 40, thus providing a constant and directional initial preload tension for the entire connecting wire 40 system. This preload tension ensures that the connecting wire 40 remains taut under windless or light wind conditions, preventing the connecting wire 40 from swaying, slapping, or colliding with the structure due to slack, thus ensuring the initial stability of the structure. At the same time, when the shape memory alloy actuator is de-energized for cooling due to control needs and is desired to be stretched, the elastic potential energy stored in the preload spring can serve as an important source of active restoring force.

[0047] Understandably, when the shape memory alloy actuator is energized and heated and actively contracts, the resulting enormous contractile force overcomes the force of the preload spring, causing the spring to be further compressed. At this time, the total tension of the connecting wire 40 is dominated by the contractile force of the actuator, which is used to pull the bracket to generate an attitude deflection. When the shape memory alloy actuator is de-energized and cooled and it is desired to return to its original length, the elastic force stored in the preload spring will serve as the main driving force, helping or accelerating the pull of the actuator, which is in the low-stiffness martensitic phase, back to its initial length, thereby assisting the entire photovoltaic bracket 10 to reset to a neutral attitude more quickly and reliably.

[0048] It should be explained that the preload of the preload spring must be sufficient to maintain the minimum working tension of the connecting wire 40, but its stiffness must not be too large, so as not to excessively resist the contraction movement of the shape memory alloy actuator and cause unnecessary energy loss.

[0049] As a preferred embodiment of the present invention, the fulcrum 11 and the ground support 20 are rotatably connected by a ball joint mechanism 70. The ball joint mechanism 70 includes: a ball head 71 disposed at the bottom end of the fulcrum 11; a ball socket 72 disposed on the ground support 20 and adapted to the ball head 71; a plurality of radial locking members 73, which are evenly arranged in the ball socket 72 along the circumferential direction and are movably arranged radially along the ball socket 72; and a driver electrically connected to the circuit board for driving the radial locking members 73 to move radially along the ball socket 72.

[0050] For example, the ball joint mechanism 70 refers to a connection mechanism that allows the connected fulcrum 11 and the ground support 20 to rotate at limited angles in multiple directions. It can be implemented in various ways, and in this embodiment, a spherical joint structure with a controllable locking function is preferred. For example, a bidirectional swing locking mechanism composed of a locking disc and a locking pin can also be used. However, how to use a locking disc and a locking pin to form a bidirectional swing locking mechanism is prior art and will not be described in detail here.

[0051] For example, it is a solid or hollow spherical member connected to the bottom of the fulcrum 11. For example, the ball socket 72 is a bowl-shaped bearing provided on the top of the ground support 20, the inner surface of which is a spherical surface with the curvature matching the outer surface of the ball head 71, for accommodating the ball head 71 and bearing the vertical load transmitted by it, while allowing the ball head 71 to rotate inside it.

[0052] For example, the radial locking member 73 is a movable component disposed in the sidewall of the ball socket 72, such as a locking pin or an arc-shaped friction block. For example, the driver is a linear actuator such as an electric push rod, a linear motor or a hydraulic cylinder, electrically connected to the circuit board, for receiving control signals to precisely drive the radial locking member 73 to extend and retract linearly along the radial direction of the ball socket 72.

[0053] For example, when the attitude of the photovoltaic bracket 10 needs to be adjusted, the control driver drives all radial locking members 73 to move radially outward along the ball joint 72, allowing the ball joint mechanism 70 to be in a free-moving state. For example, when the wind speed sensor detects that the wind speed reaches or exceeds a first set threshold, and the wind direction sensor detects a significant change in wind direction, it is determined that the attitude of the photovoltaic bracket 10 needs to be adjusted. This triggers the circuit board to send an unlocking command to the driver of the ball joint mechanism 70, causing the radial locking members 73 to retract, releasing the constraint on the ball joint 71, and providing the necessary rotational freedom for subsequent adjustment of the bracket's attitude using shape memory alloy actuators. It is understood that this unlocking action is a prerequisite for active attitude adjustment, transforming the photovoltaic bracket 10 from a conventional rigid fixed state to a controllable attitude adjustment state.

[0054] For example, when the photovoltaic support 10's attitude adjustment is complete, or when the current wind speed exceeds a second set threshold higher than the first set threshold, the control driver drives all radial locking members 73 to move radially inward along the ball joint 72 and press the ball head 71, thus locking the ball joint mechanism 70. For example, when the error between the actual support attitude fed back by the attitude sensor (such as a tilt sensor) on the photovoltaic support 10 and the target attitude calculated based on the wind conditions is less than the allowable range and remains stable for more than a preset time, it is determined that the photovoltaic support 10's attitude adjustment is complete. A locking command is then triggered, and the driver drives all radial locking members 73 to simultaneously push out, uniformly pressing the ball head 71 from all sides, preventing it from rotating, thereby rigidly locking the photovoltaic support 10 in its current wind-resistant attitude. For example, when the current wind speed exceeds a second set threshold higher than the first set threshold, it indicates that the wind conditions are extremely severe and may exceed the safe adjustment range of the active control system, thus triggering the safety protection logic and forcing the ball joint mechanism 70 to lock, resisting wind load in the most reliable way.

[0055] As a preferred embodiment of the present invention, the radial locking member 73 is a locking pin or an arc-shaped friction block, and the shape of its pressing end face matches the spherical curvature of the ball head 71.

[0056] Understandably, the shape of the pressing end face of the radial locking member 73 matches the spherical curvature of the ball head 71 in order to form a large-area, tight-fitting surface contact with the ball head 71 during driving and locking. This evenly distributes the huge locking pressure and effectively avoids local stress concentration and surface crushing that may be caused by point contact or line contact. Thus, while providing maximum static friction, it protects the precision surface of the ball head 71 from damage and ensures that the ball joint mechanism 70 has near-rigid connection reliability and long service life in the locked state.

[0057] As a preferred technical solution of the present invention, the three-dimensional truss windproof system also includes a connecting rod 60, and adjacent photovoltaic supports 10 are connected by the connecting rod 60.

[0058] For example, the fulcrum 11 of any photovoltaic bracket 10 is connected to the vertex 12 of another adjacent photovoltaic bracket 10 via connecting rods 60. For example, the fulcrum 11 of any photovoltaic bracket 10 is connected to the two vertex 12 of another adjacent photovoltaic bracket 10 via two connecting rods 60, and the two vertex 12 connected to the fulcrum 11 via the two connecting rods 60 are the two vertex 12 closest to the fulcrum 11.

[0059] It is understandable that by establishing a rigid or hinged connection between the fulcrum 11 and the apex 12 of adjacent photovoltaic supports 10 through the connecting rods 60, when a support is subjected to strong winds, part of the horizontal thrust and overturning moment it experiences can be directly transmitted and distributed to the adjacent supports and their connecting lines 40-ground anchor system through these connecting rods 60 in the form of axial force or bending moment. This significantly enhances the integrity and collaborative working ability of the three-dimensional truss windproof system, not only improving the lateral stiffness and anti-overturning stability of the entire three-dimensional truss windproof system under wind loads, but also optimizing the internal force distribution between each photovoltaic support 10 and reducing the peak load of a single support.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A three-dimensional truss windproof system, characterized in that, include: Multiple photovoltaic brackets; Ground support components, and multiple photovoltaic brackets are connected to the ground support components; The underground embedded parts and connecting lines are provided, and multiple photovoltaic brackets are respectively connected to the underground embedded parts through the connecting lines.

2. The three-dimensional truss windproof system according to claim 1, characterized in that, The photovoltaic support includes a fulcrum, a first connecting portion, a second connecting portion, and a apex portion; the fulcrum is connected to the ground support; the two ends of the first connecting portion are respectively connected to the fulcrum and the apex portion; the two ends of the second connecting portion are respectively connected to adjacent apex portions. The vertex portion is provided in multiple ways, and the fulcrum portion is provided in one way.

3. The three-dimensional truss windproof system according to claim 2, characterized in that, The photovoltaic support structure is a triangular pyramid.

4. The three-dimensional truss windproof system according to claim 2, characterized in that, Multiple connecting lines are provided, and each of the multiple connecting lines corresponds to one of the multiple vertex portions; each connecting line is respectively connected to the corresponding vertex portion and the underground embedded part.

5. The three-dimensional truss windproof system according to claim 4, characterized in that, The fulcrum is rotatably connected to the ground support; the connecting line includes a shape memory alloy actuator, which passes through the vertex and is connected to the underground embedded part at both ends; the underground embedded part is provided with a circuit board, and the shape memory alloy actuator is electrically connected to the circuit board.

6. The three-dimensional truss windproof system according to claim 5, characterized in that, The three-dimensional truss windproof system also includes a wind speed sensor and a wind direction sensor. Both the wind speed sensor and the wind direction sensor are electrically connected to the circuit board. The wind speed sensor is used to detect the current wind speed, and the wind direction sensor is used to detect the current wind direction. When the current wind speed is greater than or equal to a first set threshold, the circuit board is controlled to energize or de-energize each of the shape memory alloy actuators, so that the photovoltaic bracket tilts toward the current wind direction. When the current wind speed is less than the first set threshold, the circuit board is controlled to de-energize all the shape memory alloy actuators so that the photovoltaic bracket can be reset.

7. The three-dimensional truss windproof system according to claim 5, characterized in that, The connecting wire also includes a preload spring, which is sleeved on or parallel to the shape memory alloy actuator to provide preload tension to the connecting wire.

8. The three-dimensional truss windproof system according to claim 6, characterized in that, The fulcrum portion is rotatably connected to the ground support member via a ball joint mechanism, the ball joint mechanism comprising: The ball head is located at the bottom end of the fulcrum portion; A ball socket is provided on the ground support and is adapted to the ball head; Multiple radial locking elements are evenly arranged in the ball socket along the circumferential direction, and the radial locking elements are movably arranged along the radial direction of the ball socket; A driver, electrically connected to the circuit board, is used to drive the radial locking member to move radially along the ball socket; When it is necessary to adjust the posture of the photovoltaic bracket, the driver is controlled to drive all the radial locking members to move radially outward along the ball socket, so that the ball joint mechanism is in a free motion state; When the photovoltaic bracket posture adjustment is completed, or when the current wind speed exceeds a second set threshold higher than the first set threshold, the driver is controlled to drive all the radial locking members to move radially inward along the ball socket and press the ball head, so that the ball hinge mechanism is in a locked state.

9. The three-dimensional truss windproof system according to claim 8, characterized in that, The radial locking element is a locking pin or an arc-shaped friction block, and the shape of its pressing end face matches the spherical curvature of the ball head.

10. The three-dimensional truss windproof system according to claim 2, characterized in that, The three-dimensional truss windproof system also includes connecting rods, which connect adjacent photovoltaic supports.

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