High wind resistant solar photovoltaic panel support mounting structure and photovoltaic tracking support

Abstract

The application relates to the technical field of solar photovoltaic power generation, and discloses a high-wind-resistance solar photovoltaic panel supporting and mounting structure and a photovoltaic tracking support, wherein the solar photovoltaic panel supporting and mounting structure comprises a supporting frame, the supporting frame comprises a fixing ring, a center disc arranged at the center of the fixing ring and a supporting frame mounted above the fixing ring, a plurality of pull connecting steel wire ropes are pulled and connected between the fixing ring and the center disc, and a photovoltaic panel assembly is mounted on the supporting frame; the center disc is connected with a stand column of the photovoltaic tracking support through a rotary joint, and the pull connecting steel wire ropes distributed around the stand column are pulled and connected with the fixing ring respectively. The photovoltaic panel supporting and mounting structure is especially suitable for a steel wire rope pulling type solar tracking support, the whole supporting and mounting structure is uniformly stressed, and the stress concentration phenomenon does not occur; even in extremely windy weather, the reaction force of the steel wire rope used for pulling the supporting frame cannot cause the supporting frame to be deformed, cracked and the like.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic power generation technology, specifically to a high wind-resistant solar photovoltaic panel support and installation structure and a photovoltaic tracking bracket. Background Technology

[0002] Currently, there are many types of photovoltaic (PV) mounting systems. Most on the market are fixed mounting systems, single-axis tracking systems have a small market share, while dual-axis tracking systems are less common. PV tracking systems are widely recognized as one of the most effective methods to improve PV power generation efficiency and reduce construction costs. Tracking systems ensure that the light-receiving surface of the flat-panel PV module is always directly facing the sun. Therefore, under the same irradiance conditions, the automatic angle adjustment mode can absorb more solar radiation energy than fixed-installation PV modules, thereby achieving the goal of reducing PV power generation costs.

[0003] However, existing dual-axis tracking brackets have significant structural design flaws, resulting in poor overall wind resistance. Therefore, although dual-axis tracking brackets can significantly increase the power generation of photovoltaic modules, their market application remains limited due to insufficient wind resistance. Specifically, the common defect of existing dual-axis tracking brackets is that their electric actuators need to be close to the column and rely on their own extension and retraction to adjust the pitch angle of the photovoltaic modules. The actuators provide only extremely weak support. While they can operate normally in calm or light winds, in strong winds, the supporting brackets of the photovoltaic panels are easily overturned, damaging the entire photovoltaic power generation structure and causing serious economic losses.

[0004] Chinese patent application CN115562361A discloses a flexible dual-axis solar photovoltaic tracker, comprising a truss base, a dual-axis mechanism, V-shaped supports, a photovoltaic purlin frame, and a flexible traction mechanism. The dual-axis mechanism includes a bearing seat on the truss base, a cross shaft consisting of a long shaft and a pair of short shafts on either side of the long shaft, with the short shafts of the cross shaft mounted on the bearing seat via a first bearing. Several pairs of V-shaped supports are mounted on the long shaft via second bearings at their bottom ends. The photovoltaic purlin frame is fixed to the upper end of the V-shaped supports. The flexible traction mechanism includes a drive mechanism on the truss base and wire rope assemblies driven by the drive mechanism to pull the photovoltaic purlin frame and the cross shaft respectively. By adopting a V-shaped support design, the height of the truss base can be reduced, thereby reducing the installation height, while still meeting the requirements for bidirectional tracking rotation.

[0005] The aforementioned patent utilizes the flexibility of steel wire ropes to drive the rotation of the purlin frame by tightening and fixing the ground foundation, achieving tracking control in the east, west, north, and south directions. This makes the entire tracking system more stable and reliable, able to withstand extreme weather with strong winds and prevent the photovoltaic panel support structure from being overturned by strong winds. However, the photovoltaic purlin frame used to support the installed photovoltaic panels in this tracking bracket adopts a conventional support frame structure, which has the problem of insufficient structural strength and is prone to local stress concentration in the frame. Under extreme wind conditions, the steel wire rope will generate a large traction force, and its reaction force will directly act on the photovoltaic purlin frame, leading to deformation, cracking, or even disintegration of the frame. Summary of the Invention

[0006] To address the problems and shortcomings of the existing technologies, this invention specifically proposes a high wind-resistant solar photovoltaic panel support and installation structure and a photovoltaic tracking bracket. The support and installation structure designed by this invention for installing photovoltaic panel modules is particularly suitable for wire rope-pulled solar tracking brackets. The entire photovoltaic panel support and installation structure is subjected to uniform stress, and there will be no stress concentration. Even in extreme windy weather, the reaction force of the wire rope used to pull the support frame will not cause the support frame to deform or crack.

[0007] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: This invention first discloses a high wind-resistant solar photovoltaic panel support and installation structure. The support and installation structure includes a support frame, which includes a fixing ring, a central disk disposed at the center of the fixing ring, and a support frame installed above the fixing ring. Several radially connected steel wire ropes are tied between the fixing ring and the central disk. The photovoltaic panel assembly is installed on the support frame. The central disk is connected to the column of the photovoltaic tracking bracket through a rotating joint. The tension steel wire ropes distributed around the column are respectively connected to the fixing ring.

[0008] Preferably, the central disk includes a coaxial first central disk and a second central disk, with the second central disk located below the first central disk and the two connected by a connecting rod; the first central disk and the fixing ring are at the same horizontal height and are flush; a horizontal first tie wire rope is evenly tied between the inner walls of the first central disk and the fixing ring along the circumference, and an inclined second tie wire rope is evenly tied between the second central disk and the fixing ring along the circumference; the second central disk is connected to the column through a rotating joint.

[0009] Preferably, the support frame has a rectangular grid inside that matches the size of the photovoltaic panel assembly, and the photovoltaic panel assembly is installed within the rectangular grid.

[0010] Preferably, the support frame is a grid structure formed by horizontally arranged horizontal and vertical bars intersecting each other.

[0011] Preferably, the support frame includes a rectangular frame, within which several crisscrossing steel cables or strands are installed. The crisscrossing steel cables or strands divide the interior of the rectangular frame into several rectangular grids that match the size of the photovoltaic panel components, and a photovoltaic panel component is installed in each rectangular grid.

[0012] Preferably, the rectangular frame is formed by steel cable or steel strand, and support rods are provided between the four corners of the rectangular frame and the fixing ring. One end of the support rod is connected to the fixing ring, and the other end abuts against the 90° inner corner of the rectangular frame.

[0013] Based on the same inventive concept, the present invention also discloses a photovoltaic tracking bracket, which includes the above-mentioned high wind-resistant solar photovoltaic panel support and installation structure.

[0014] In this invention, the photovoltaic tracking bracket is a single-axis tracking bracket or a dual-axis tracking bracket. A single-axis tracking bracket can only rotate around a fixed axis, typically in a north-south direction. The bracket drives the photovoltaic panel to pitch or rotate horizontally along the axis, tracking the sunrise and sunset. A dual-axis tracking bracket can rotate around two mutually perpendicular axes, achieving full-dimensional solar tracking. The two axes are the azimuth axis and the altitude axis, respectively. The bracket can drive the photovoltaic panel to simultaneously track the sunrise and sunset (azimuth angle) and altitude changes (altitude angle), always keeping the photovoltaic panel perpendicular to sunlight and increasing power generation.

[0015] The beneficial effects of this invention are: 1. This invention addresses the support and installation structure of photovoltaic (PV) modules. While retaining the traditional rectangular support frame, it adds a prestressed mesh structure below it, formed by a central disc and fixing rings connected by steel wire ropes. The steel wire ropes used for traction and tensioning the PV module support structure are directly connected to the fixing rings, not to the rectangular support frame. This increases the overall PV module support structure's ability to withstand strong winds and resist deformation. Localized stress on a single connecting steel wire rope or fixing ring can be quickly distributed to other steel wire ropes and fixing rings through the central disc. The stress distribution of the entire fixing ring resembles an arch bridge, converting radial force into axial force, significantly improving the stress limit. Therefore, compared to directly connecting the traction steel wire ropes to the rectangular support frame, the entire PV module support and installation structure experiences more uniform stress, avoiding deformation and cracking caused by localized stress concentration in the frame. Even in the face of strong gusts or continuous strong winds, it maintains structural stability, exhibiting high wind resistance and significantly reducing the risk of PV panels being damaged or displaced due to support failure.

[0016] 2. The prestressed mesh structure formed by the steel wire rope tie-in central disc and the fixing ring designed in this invention combines flexibility and rigidity. It can buffer the impact of wind through its own slight deformation, reduce the vibration damage of strong winds to photovoltaic panels, and extend the service life of photovoltaic panels and supporting structures. Furthermore, the arch bridge-type force-bearing design of the fixing ring allows the load-bearing potential of each tie-in steel wire rope to be fully utilized, improving the overall wind resistance level without the need to increase the material specifications. Under the premise of meeting wind resistance requirements, it effectively controls the structural weight and manufacturing cost. Attached Figure Description

[0017] The foregoing and hereinafter detailed description of the invention becomes clearer when read in conjunction with the following drawings, in which: Figure 1 This is a top view of the support frame structure of the present invention; Figure 2 This is a top view of another support frame structure of the present invention; Figure 3 This is a front view of the support frame of the present invention; Figure 4 This is a structural diagram of the dual-axis tracking bracket in Embodiment 2 of the present invention; Figure 5 This is a front view of the dual-axis tracking bracket of the present invention; Figure 6 A structural diagram showing the guide pulley configuration of the dual-axis tracking bracket of this invention; Figure 7 This is a top view of the reversing rotation mechanism of the present invention; Figure 8 This is a front sectional view of the reversing rotation mechanism of the present invention.

[0018] In the picture: 1. Support assembly; 2. Pitch adjustment assembly; 3. Drum; 4. Drum shaft; 5. Reversing rotation mechanism; 6. Transmission mechanism; 7. First gear; 8. Second gear; 9. Worm sleeve; 10. Gear ring; 11. Column; 12. Support frame; 13. Rotary joint; 14. Fixing ring; 15. Center plate; 16. Tie wire rope; 17. Support frame; 18. Support rod; 21. No. 1 traction wire rope; 22. No. 2 traction wire rope; 23. No. 3 traction wire rope; 24. No. 4 traction wire rope; 25. Pitch adjustment drive assembly; 26. Guide pulley; 31. First drum; 32. Second drum; 33. Third drum; 34. Fourth drum; 41. First drum shaft; 42. Second drum shaft; 51. Gear bracket; 52. First planetary gear; 53. Second planetary gear; 61. First transmission gear; 62. Second transmission gear; 63. Third transmission gear; 64. Transmission shaft; 100. Stay cable; 151. First center plate; 152. Second center plate; 161. First tie wire rope; 162. Second tie wire rope; 200. Photovoltaic panel assembly. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this invention, several specific embodiments will be used to further illustrate the technical solutions for achieving the objectives of this invention. It should be noted that the technical solutions claimed by this invention include, but are not limited to, the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort should fall within the scope of protection of this invention.

[0020] Example 1 This embodiment discloses a high wind-resistant solar photovoltaic panel support and installation structure, which is particularly suitable for photovoltaic tracking brackets with steel wire rope traction, such as... Figure 1 As shown, the solar photovoltaic panel support installation structure includes a support frame 12. The support frame 12 includes a fixing ring 14, a central disc 15, a plurality of tie wire ropes 16 disposed between the fixing ring 14 and the central disc 15, and a support frame 17 mounted on the fixing ring 14 (supported above the fixing ring 14). The central disc 15 is located at the center of the fixing ring 14, and is fixed to the fixing ring 14 by tie wire ropes 16 evenly distributed around the circumference to form a whole (one end of the tie wire rope 16 is fixed to the fixing ring 14, and the other end is fixed to the central disc 15 and is stretched). A photovoltaic panel assembly 200 for generating direct current is mounted on a support frame 17; and the central disk 15 is rotatably connected to the column 11 of the photovoltaic tracking bracket via a rotating joint 13. Pull steel wire ropes are distributed around the column 11, one end of which is connected to a fixing ring 14, and the other end is connected to a drum on the ground or a drum mounted on the column 11. The pull steel wire ropes can be wound and unwound on the drum. A pitch adjustment assembly 2 for adjusting the north-south pitch angle and / or east-west pitch angle of the photovoltaic panel assembly 200 is provided on or beside the column 11.

[0021] Furthermore, for the structure of the supporting frame 17, there are two methods, as detailed below: like Figure 1As shown, this is one type of support frame 17. The support frame 17 includes a rectangular frame. According to the design dimensions, several crisscrossing steel cables or steel strands are installed inside the rectangular frame. The crisscrossing steel cables or steel strands divide the interior of the rectangular frame into several rectangular grids that match the size and shape of the photovoltaic panel assembly 200. The photovoltaic panel assembly 200 is installed in each rectangular grid (the photovoltaic panel assembly 200 is connected to the surrounding steel cables or steel strands, or the frame of the rectangular frame, through structures such as buckles and locks). The rectangular frame is formed by taut and tied steel cables or steel strands. A support rod 18 is installed on the fixing ring 14. The two ends of the steel cables or steel strands are tied to the support rod 18, and the other end of the support rod 18 is connected to the fixing ring 14.

[0022] like Figure 2 As shown, another structural form of the support frame 17 is provided. The support frame 17 is formed by several horizontally arranged horizontal and vertical bars that are interwoven. The interwoven horizontal and vertical bars form a rectangular grid structure. Photovoltaic panel components 200 are installed in the grid of the grid-like support frame 17. The photovoltaic panel components 200 are connected to the surrounding horizontal and vertical bars through structures such as buckles and locks.

[0023] For the support frame 17 composed of horizontal and vertical bars, several horizontally arranged horizontal bars are supported on the upper surface of the fixing ring 14 and connected to the fixing ring 14, while horizontally arranged vertical bars are supported on the horizontal bars and fixedly connected to the horizontal bars. Thus, the horizontal and vertical bars interweave on the upper surface of the fixing ring 14 to form a grid-like support frame 17. Alternatively, the horizontally arranged vertical bars overlap and are supported on the upper surface of the fixing ring 14, and the horizontal bars are supported on the vertical bars, with the horizontal and vertical bars interweaving to form a grid-like support frame 17.

[0024] The horizontal bars, vertical bars, and fixing rings 14 are fixedly connected by bolts or other structures.

[0025] The above information regarding the installation of photovoltaic panel module 200 is common knowledge in this field and will not be elaborated upon further here.

[0026] like Figure 3As shown, for the mesh structure formed by the fixing ring 14, the central disc 15, and the connecting steel wire rope 16, there is a further structural improvement as follows: the central disc 15 includes a first central disc 151 and a second central disc 152 arranged coaxially, one above the other. The first central disc 151 is at the same horizontal height as the fixing ring 14 and is located at the center of the fixing ring 14. The second central disc 152 is located directly below the first central disc 151. A connecting rod is installed between the two central discs 15. A horizontal first connecting steel wire rope 161 is connected between the inner wall of the first central disc 151 and the fixing ring 14. An inclined second connecting steel wire rope 162 is connected between the second central disc 152 and the fixing ring 14. The first steel wire rope 161 and the second steel wire rope 162 are evenly distributed circumferentially, finally forming a mesh structure as shown. Figure 3 The prestressed mesh structure shown is illustrated.

[0027] The solar photovoltaic panel support and installation structure proposed in this invention can improve the overall wind resistance level without increasing the material specifications. While meeting the wind resistance requirements, it effectively controls the structure's self-weight and manufacturing cost, and significantly reduces the amount of steel and other materials used in the support structure.

[0028] Example 2 Based on Example 1, this example discloses a photovoltaic dual-axis tracking bracket, as shown in the appendix to the specification. Figure 4-6 As shown, the dual-axis tracking bracket consists of two parts: a support component 1 for supporting the photovoltaic panel module 200 and a pitch adjustment component 2 for adjusting the pitch angle of the photovoltaic panel module 200. The support component 1 includes a column 11 and a support frame 12. The column 11 is fixed to the ground, and the support frame 12 is rotatably connected to the column 11 through a rotating joint 13. The photovoltaic panel module 200 for power generation is installed on the support frame 12.

[0029] In this embodiment, the structure of the support frame 12 is the same as in Embodiment 1, and will not be described in detail here.

[0030] Furthermore, the structural form of the pitch adjustment component 2 of the dual-axis tracking bracket is as follows: The pitch adjustment assembly 2 consists of a pitch adjustment drive assembly 25 and four steel wire ropes located around the support frame 12. The four steel wire ropes include a first traction steel wire rope 21, a second traction steel wire rope 22, a third traction steel wire rope 23, and a fourth traction steel wire rope 24. One end of each of the four traction steel wire ropes is connected to a fixing ring 14 on the support frame 12 (the fixing ring 14 has four traction points, and the first to fourth traction steel wire ropes are fixed to the first to fourth traction points respectively), and the other end is fixedly connected to the pitch adjustment drive assembly 25. The four traction steel wire ropes are evenly distributed around the support frame 12. The two steel wire ropes located on opposite sides of the support frame 17 form an adjustment combination used to adjust the pitch angle of the support frame 12 in one direction.

[0031] Furthermore, the column 11 can be directly fixed to the ground or a base can be installed on the ground and the column can be fixed to the base. Additionally, pre-embedded anchor bolts or expansion bolts can be used to fix the column 11.

[0032] Furthermore, the rotary joint 13 is generally a universal joint or ball joint assembly.

[0033] In the embodiment described in this invention, the photovoltaic panel module 200 installed on the support frame 12 is a power generation device that generates direct current when exposed to sunlight. Since the sun's daily trajectory exhibits an azimuth change of "rising in the east and setting in the west" (east-west direction) and an altitude change of "highest at noon and lowest in the morning and evening" (north-south direction), it is necessary to adjust the east-west pitch angle (tracking azimuth angle) and the north-south pitch angle (tracking altitude angle) of the photovoltaic panel module 200 to ensure that its light-receiving surface always faces the sun, thereby absorbing more solar radiation energy under the same irradiance conditions and reducing the cost of photovoltaic power generation. In the embodiment described in this invention, the working principle and process of the dual-axis tracking bracket for adjusting the pitch angle of the photovoltaic panel module 200 on the support frame 12 are as follows: (1) In the initial state, the sun rises from the eastern horizon, with an altitude angle close to 0° and an azimuth angle due east. At this time, under the initial setting of the pitch adjustment component 2, the support frame 12 of the photovoltaic panel module 200 is in a "low-angle eastward tilt" state: (1.1) East-West Direction Adjustment: The pitch adjustment drive component 25 is activated, driving the No. 4 traction steel wire rope 24 connected to the support frame 12 to wind up and the No. 2 traction steel wire rope 22 to release, thereby driving the support frame 12 to rotate relative to the column 11 with the rotating joint 13 as the rotation support point, so that the support frame 12 tilts eastward to adjust the pitch angle of the photovoltaic panel component 200 in the east-west direction, so that the photovoltaic panel component 200 faces the sun. (1.2) North-South Direction Adjustment: The pitch adjustment drive component 25 is activated, driving the No. 3 traction steel wire rope 23 connected to the support frame 12 to wind up and the No. 1 traction steel wire rope 21 to release, thereby driving the support frame 12 to rotate relative to the column 11 with the rotating joint 13 as the rotation support point, so that the support frame 12 tilts to the south (low angle) to adjust the north-south pitch angle of the photovoltaic panel component 200, so that the photovoltaic panel component 200 adapts to the initial solar altitude angle.

[0034] (2) Morning period (when the sun rises and moves westward) (2.1) East-West pitch angle adjustment: As the sun moves from due east to southeast and due south (the azimuth angle gradually increases), the pitch adjustment drive component 25 initiates east-west control. Specifically, the pitch adjustment drive component 25 drives the second traction steel wire rope 22 to wind up and the fourth traction steel wire rope 24 to release. The two steel wire ropes pull the support frame 12, which slowly rotates westward with the rotating joint 13 as the fulcrum, ensuring that the light-receiving surface of the photovoltaic panel component 200 is always facing the sun.

[0035] (2.2) North-South Direction Adjustment: The solar altitude angle gradually increases (from 0° to the maximum angle at noon). The pitch adjustment drive component 25 controls the first traction steel wire rope 21 to be wound up and the third traction steel wire rope 23 to be released, thereby pulling the support frame 12 to rotate northward, gradually raising the tilt angle of the photovoltaic panel component 200 so that the light-receiving surface is perpendicular to the sunlight (reducing reflection loss).

[0036] (3) Noon When the sun reaches its noon position (due south azimuth and maximum altitude angle), the support frame 12 adjusts the east-west direction so that the photovoltaic panel module 200 faces due south. At this time, the No. 2 and No. 4 pulling steel wire ropes 24 are in a balanced tension state and there is no tightening or loosening action. Regarding north-south orientation adjustment: the tilt angle of photovoltaic panel module 200 reaches the maximum value of the day, and the winding and unwinding state of pull steel wire ropes 23 of No. 1 and No. 3 is stable, ensuring that the light-receiving surface is perpendicular to the sunlight.

[0037] (4) Afternoon to sunset (4.1) Afternoon period (when the sun moves westward and descends) East-west direction adjustment: As the sun moves from due south to southwest and due west (the azimuth angle continues to increase), the pitch adjustment drive component 25 controls the winding of the No. 4 traction steel wire rope 24 and the release of the No. 2 traction steel wire rope 22, which drives the support frame 12 to continue to rotate westward to track the change in the sun's position.

[0038] North-South Direction Adjustment: As the solar altitude angle gradually decreases, the pitch adjustment drive component 25 controls the winding of the No. 3 traction steel wire rope 23 and the release of the No. 1 traction steel wire rope 21. The traction support frame 12 rotates southward, reducing the tilt angle of the photovoltaic panel component 200 and ensuring that the light-receiving surface always faces the sun.

[0039] (4.2) Before sunset (when the sun is close to the horizon) With the solar altitude angle close to 0° and the azimuth angle due west, the photovoltaic module 200 returns to a low-angle tilt in the north-south direction and faces west in the east-west direction. Furthermore, all four steel cables are in a taut state. If there is a westerly or southwesterly wind, the steel cables on the east and south sides provide reverse support to ensure the stability of the entire dual-axis tracking support in a strong wind environment.

[0040] There are multiple options for the pitch adjustment drive assembly 25. In some embodiments, the pitch adjustment drive assembly 25 consists of four winches, which are respectively installed around the support frame 17. The winches are connected to the traction wire ropes on the same side or opposite side of the fixed ring 14. For example, the first traction wire rope 21 is wound on the drum of the first winch, the second traction wire rope 22 is wound on the drum of the second winch, the third traction wire rope 23 is wound on the drum of the third winch, and the fourth traction wire rope 24 is wound on the drum of the fourth winch. The No. 1 winch, the No. 1 traction wire rope 21, and the No. 3 winch and the No. 3 traction wire rope 23 form an adjustment combination for the north-south pitch angle of the photovoltaic panel module 200. The No. 2 winch, the No. 2 traction wire rope 22, and the No. 4 winch and the No. 4 traction wire rope 24 form another adjustment combination for the east-west pitch angle of the photovoltaic panel module 200.

[0041] The above embodiments illustrate the connection between the winch and the traction wire rope on the same side. For the connection between the winch and the traction wire rope on the opposite side, it can be understood that traction wire rope 21 is wound around the drum of winch 3, traction wire rope 22 is wound around the drum of winch 4, traction wire rope 23 is wound around the drum of winch 1, and traction wire rope 24 is wound around the drum of winch 2. Although the connection methods between the traction wire ropes and the winches differ, the resulting adjustment combination is still the same as in the above embodiments, that is, the two traction wire ropes located on opposite sides of the support frame and the two winches combine to form an adjustment combination.

[0042] Furthermore, it is understandable that regardless of whether the winch is connected to the same-side or opposite-side traction wire rope, the principle and process of driving the support frame 12 to rotate and adjust the photovoltaic panel module 200 remain the same. For example, when winches No. 1 and No. 3 operate, they can drive traction wire ropes No. 1 and No. 3 to either retract and release, or release and retract, to adjust the north-south pitch angle of the support frame 12; when winches No. 2 and No. 4 operate, they can drive traction wire ropes No. 2 and No. 4 to either retract and release, or release and retract, to adjust the east-west pitch angle of the support frame 12. The specific pitch angle adjustment process of the support frame 12 is a conventional method and will not be elaborated here.

[0043] In some other embodiments, the pitch adjustment drive assembly 25 includes a first drum 31, a second drum 32, a third drum 33, a fourth drum 34, a first drum shaft 41, and a second drum shaft 42. The four drums 3 are also evenly and symmetrically distributed around the support frame 12. Each of the four drums 3 is connected to a wire rope on the support frame 12 on the same or opposite side. Two drums 3 located on opposite sides of the support frame 12 are mounted on the same drum shaft 4. The two wire ropes connecting the two drums 3 mounted on the same drum shaft 4 are wound in opposite directions on the corresponding drum 3. Each of the two drum shafts 4 has an independent motor for driving its rotation.

[0044] The first traction wire rope 21 is wound in the forward direction on the first drum 31, and the third traction wire rope 23 is wound in the reverse direction on the third drum 33. The first drum 31 and the third drum 33 are fixed to the first drum shaft 41, which is mounted on the first drum shaft support and driven to rotate by the first motor. The second traction wire rope 22 is wound in the forward direction on the second drum 32, and the fourth traction wire rope 24 is wound in the reverse direction on the fourth drum 34. The second drum 32 and the fourth drum 34 are fixed to the second drum shaft 42, which is mounted on the second drum shaft support and driven to rotate by the second motor.

[0045] When the motor drives the drum shaft 4 to rotate, it causes the two steel wire ropes wound in opposite directions on the two drums 3 on the same drum shaft 4 to be wound and unwound respectively, pulling the entire support frame 12 to rotate relative to the column 11 with the rotating joint 13 as the rotation support point, so as to adjust the pitch angle of the photovoltaic panel module 200 in the north-south or east-west direction. In the embodiment described in this invention, the first pulling steel wire rope 21, the first drum 31, the third pulling steel wire rope 23, and the third drum 33 form an adjustment combination, and the remaining second pulling steel wire rope 22, the second drum 32, the fourth pulling steel wire rope 24, and the fourth drum 34 form another adjustment combination. The specific pitch angle adjustment process will not be described in detail here.

[0046] Similarly, the above embodiments illustrate the connection between the drum 3 and the wire rope on the same side of the support frame 12. For the connection between the drum and the wire rope on the opposite side, please refer to the aforementioned embodiments, which will not be described in detail here.

[0047] It should also be noted that during installation, there is a height difference between the two drum shafts 4 to avoid interference between them. Furthermore, it is understandable that the motor driving the drum shafts 4 can generally be a drive motor, a geared motor, a hydraulic motor, or a servo motor, etc., all of which achieve the same effect.

[0048] In the embodiments described in this invention, when adjusting the pitch angle of the support frame 12, to avoid overload stretching of the wire rope due to speed differences when winding and unwinding the traction wire rope from the drum 3, all four drums 3 of this invention are variable diameter drums, with their outer circumferential diameters continuously and gradually changing from one end to the other along their own axial direction (i.e., the diameter of the outer circumferential surface of the drum 3 gradually increases or decreases from one end to the other along its own axial direction). When two opposing traction wire ropes on the support frame 12 are in a coordinated winding and unwinding state, one wire rope is released from the larger diameter end of the corresponding drum 3 to the smaller diameter end, and its release linear velocity decreases synchronously as the diameter of the corresponding contact section of the drum 3 decreases; the other wire rope is wound from the smaller diameter end of the corresponding drum 3 to the larger diameter end, and its winding linear velocity increases synchronously as the diameter of the corresponding contact section of the drum 3 increases. Therefore, by dynamically complementing the winding and unwinding linear speeds of the two traction wire ropes, the difference in linear speed between different diameter sections of the variable diameter drum 3 is offset, the tension of the two traction wire ropes is balanced, and overload tension is avoided due to mismatched winding and unwinding speeds of the traction wire ropes. This achieves the technical effect of overcoming speed differences and preventing wire rope breakage.

[0049] Furthermore, the input power structure of the drum shaft 4 in the aforementioned pitch adjustment drive assembly 25 is further improved and optimized as follows: a single motor drives two drum shafts 4 to rotate. Specifically, a reversing rotation mechanism 5 is provided between the two drum shafts 4, and the reversing rotation mechanism 5 is connected to a power source; the power source drives the reversing rotation mechanism 5 to rotate, and the reversing rotation mechanism 5 drives one of the drum shafts 4 to rotate. The two steel wire ropes wound in opposite directions on the two drums 3 on the drum shaft 4 are wound and unwound respectively, causing the support frame 12 to rotate relative to the column 11 with the rotating joint 13 as the rotation support point, so as to adjust the pitch angle of the photovoltaic panel assembly 200 in the north-south or east-west direction on the support frame 12.

[0050] Furthermore, this embodiment provides a detailed description and explanation of the aforementioned reversing rotation mechanism 5, such as... Figure 7 and Figure 8As shown, the reversing rotation mechanism 5 includes a gear bracket 51 and a first planetary gear 52 and a second planetary gear 53 mounted on the gear bracket 51, which can rotate synchronously with the gear bracket 51 and rotate around their own axis. The gear bracket 51 is connected to a gear ring 10 for driving its rotation. The first drum shaft 41 passes through the gear bracket 51 and its two ends are connected to the drum 3 respectively. A first gear 7 is fixedly mounted on the first drum shaft 41, and the first gear 7 meshes with the first planetary gear 52 and the second planetary gear 53 respectively. The second drum shaft 42 is connected to the worm sleeve 9 through a transmission mechanism 6. A second gear 8 is fixed on the worm sleeve 9, and the second gear 8 meshes with the first planetary gear 52 and the second planetary gear 53 respectively. Furthermore, the transmission mechanism 6 includes a first transmission gear 61, a second transmission gear 62, and a third transmission gear 63. The first transmission gear 61 and the second transmission gear 62 are fixed at both ends of a transmission shaft 64. The first transmission gear 61 meshes with the meshing teeth on the worm sleeve 9, and the second transmission gear 62 meshes with the third transmission gear 63 mounted on the second drum shaft 42.

[0051] The gear ring 10 drives the gear carrier 51 to rotate, and the two planetary gears on the carrier rotate accordingly; wherein... When the first drum shaft 41 is braked, the two planetary gears rotate around their own axes, and drive the second gear 8 meshing with them to rotate around its own axis. The worm sleeve 9 connected to the second gear 8 also rotates with the second gear 8. Then, under the meshing action of the worm sleeve 9, the first transmission gear 61, the transmission shaft 64, the second transmission gear 62 and the third transmission gear 63 are driven to rotate respectively. Finally, the third transmission gear 63 drives the second drum shaft 42 to rotate. The two steel wire ropes wound in the two drums 3 on the second drum shaft 42 in opposite directions are wound and unwound respectively, which drives the support frame 12 to rotate relative to the column 11 with the rotating joint 13 as the rotation support point, so as to adjust the east-west pitch angle of the photovoltaic panel assembly 200 on the support frame 12. When the second drum shaft 42 is braked, the two planetary gears on the bracket rotate around their own axes, and drive the first gear 7 meshing with it to rotate around its own axis. The first gear 7 drives the first drum shaft 41 to rotate. The two steel wire ropes wound in the two drums 3 on the first drum shaft 41 in opposite directions are wound and unwound respectively, which drives the support frame 12 to rotate relative to the column 11 with the rotating joint 13 as the rotation support point, so as to adjust the pitch angle of the photovoltaic panel module 200 in the north-south direction.

[0052] Therefore, brakes are usually provided on the first drum shaft 41 and the second drum shaft 42 to decelerate the drum shaft or keep it in a stopped state (not rotating).

[0053] In the embodiments described in this invention, the gear bracket 51 and the gear ring 10 are typically machined as a single unit. Furthermore, to improve the overall compactness and high integration of the dual-axis tracking support drive structure and simplify certain structural elements, the aforementioned reversing rotation mechanism 5, gear ring 10, first gear 7, second gear 8, and worm gear sleeve 9 are all integrated onto the first drum shaft support. The specific structure is as follows: The first spool shaft 41 is rotatably mounted on the first spool shaft support and can rotate on the first spool shaft support. The gear bracket 51 and the gear ring 10 are both sleeved on the first spool shaft 41 and can rotate relative to the first spool shaft 41. The first gear 7 mounted on the first spool shaft 41 is located in the gear bracket 51 and meshes with the first planetary gear 52 and the second planetary gear 53 inside the gear bracket 51. Further, the worm sleeve 9 is sleeved on the first spool shaft 41 and rotatably connected to one leg of the first spool shaft support. The first spool shaft 41 can rotate freely inside the worm sleeve 9. That is to say, one end of the first spool shaft 41 is rotatably mounted on one leg of the first spool shaft support, and the other end passes through the gear ring 10, the gear bracket 51, and the worm sleeve 9 in sequence and extends to the outside of the other leg of the first spool shaft support. The second gear 8 is fixedly mounted on the worm sleeve 9 and meshes with the first planetary gear 52 and the second planetary gear 53.

[0054] In the above structure, the axes of the first drum shaft 41, the worm sleeve 9, the gear ring 10, the gear bracket 51, the first gear 7, and the second gear 8 coincide with each other.

[0055] Based on the aforementioned integrated structural design, the overall volume is reduced, and the synchronous or individual driving of the first drum shaft 41 and the second drum shaft 42 is achieved by utilizing the positional distribution and connection relationships between the components. Furthermore, when installation requirements are met, the gear ring 10, the first gear 7 and second gear 8 of the reversing rotation mechanism 5, the worm gear sleeve 9, and the transmission mechanism 6 can all be housed inside the column 11 of the tracking bracket, making full use of the internal space of the column 11 and reducing the footprint of the tracking bracket during installation. Even when the column 11 is large enough, the drum shaft 4 and the drum 3 can be hidden inside the column 11, with only an opening on the column 11 for the wire rope to pass through. However, the dimensions of the column 11 must not only meet the strength requirements but also be controlled within a reasonable cost range. The column 11 is typically a steel column made of steel.

[0056] When the gear ring 10 drives the gear bracket 51 to rotate, the two planetary gears fixed on the bracket will first rotate with the bracket (i.e., rotate around the axis of the bracket). If neither the first drum shaft 41 nor the second drum shaft 42 is braked, the first gear 7 and the second gear 8 on the two drum shafts 4 will be driven to rotate with the bracket because they mesh with the two planetary gears. This will then drive the first drum shaft 41 and the worm sleeve 9 connected to them to rotate around their own axes, ultimately achieving the winding of the wire rope wound on each drum. For the movement of each component when the drum shaft 4 is braked, please refer to the description in the above embodiment; it will not be elaborated further here.

[0057] It is understood that the gear ring 10 is connected to a drive structure such as a drive motor, a geared motor, a hydraulic motor, or a servo motor through a bevel gear meshing with it. The gear ring 10 is driven to rotate by the aforementioned drive structure, and the bevel gear is usually mounted on the output shaft of the drive structure.

[0058] Similarly, the worm sleeve 9 and the second gear 8 can also be machined into an integrated structure.

[0059] In this embodiment of the dual-axis tracking bracket, the two roller shafts are connected to the same motor via a reversing rotation mechanism. The entire device requires only one power input and control system to achieve rotation and control of the photovoltaic panel module in different directions. This simplifies the traditional system structure, which requires at least two sets of power inputs and controls, to a single set, significantly reducing equipment cost and complexity while improving system reliability and operating efficiency. This design not only reduces the space occupied by the power equipment but also lowers energy consumption and maintenance costs, providing an efficient and economical solution for multi-directional adjustment of the photovoltaic panel module.

[0060] Example 3 Based on Embodiment 1, this embodiment discloses a photovoltaic single-axis tracking bracket. The single-axis tracking bracket is structurally similar to the dual-axis tracking bracket of Embodiment 2, and therefore the illustrations of the dual-axis tracking bracket in Embodiment 2 can be referenced. The single-axis tracking bracket also consists of two parts: a support component 1 for supporting the photovoltaic panel assembly 200 and a pitch adjustment component 2 for adjusting the pitch angle of the photovoltaic panel assembly 200. The support component 1 includes a column 11 and a support frame 12. The column 11 is fixed to the ground, and the support frame 12 is rotatably connected to the column 11 via a rotating joint 13. The photovoltaic panel assembly 200 for power generation is mounted on the support frame 12.

[0061] In this embodiment, the structure of the support frame 12 is the same as in Embodiment 1, and will not be described in detail here.

[0062] Furthermore, the structural form of the pitch adjustment component 2 of the single-axis tracking bracket is as follows: The pitch adjustment assembly 2 comprises a pitch adjustment drive assembly 25 and two steel wire ropes located on opposite sides of the support frame 12. The two steel wire ropes include a first pulling steel wire rope 21 and a third pulling steel wire rope 23. One end of each pulling steel wire rope is connected to a fixing ring 14 on the support frame 12, and the other end is fixedly connected to the pitch adjustment drive assembly 25. The pitch adjustment drive assembly 25 consists of two winches, which are respectively installed around the support frame 12 (fixed to the ground or a mounting base on the ground). The winches are connected to the pulling steel wire ropes on the support frame 12 on the same side or opposite side. For example, the first pulling steel wire rope 21 is wound on the drum of the first winch, and the third pulling steel wire rope 23 is wound on the drum of the third winch. The first winch, the first pulling steel wire rope 21, and the third winch and the third pulling steel wire rope 23 form a combined structure for adjusting the pitch angle of the photovoltaic panel assembly 200. When the No. 1 winch and the No. 3 winch are in operation, they can drive the No. 1 traction wire rope 21 and the No. 3 traction wire rope 23 to retract and release or release and retract, respectively, thereby adjusting the pitch angle of the support frame 12.

[0063] The above embodiments illustrate the connection between the winch and the traction wire rope on the same side. For the connection between the winch and the traction wire rope on the opposite side, it can be understood that traction wire rope 21 (number one) is wound around the drum of winch 3, and traction wire rope 23 (number three) is wound around the drum of winch 1. Although the connection method between the traction wire rope and the winch differs, the resulting adjustment combination is the same as in the above embodiments, and the operating method is also the same.

[0064] Furthermore, in some embodiments, the pitch adjustment drive assembly 25 includes a first drum 31, a third drum 33, and a drum shaft. The first drum 31 and the third drum 33 are fixed on the drum shaft 4. The first traction steel wire rope 21 and the third traction steel wire rope 23 are wound on the drum shaft 4 in opposite directions, one in a clockwise direction and the other in a counterclockwise direction. The drum shaft is connected to a motor. The motor drives the drum shaft 4 to rotate, and the two traction steel wire ropes wound in opposite directions on the two drums on the drum shaft 4 are wound in and out, respectively. The traction support frame 12 rotates relative to the column 11 with the rotary joint 13 as the rotation support point, thereby adjusting the pitch angle of the photovoltaic panel assembly 200.

[0065] Similarly, the above embodiments illustrate the case where the drum is connected to the wire rope on the same side of the support frame 12. For the connection between the drum and the wire rope on the opposite side, please refer to the above implementation of the winch, which will not be described in detail here.

[0066] Similarly, when adjusting the pitch angle of the support frame 12, to avoid overloading of the wire rope due to speed differences when winding and unwinding the wire rope from the drum 3, the drum 3 in this embodiment is the same as the drum 3 in embodiment 2, and is also a variable diameter drum. The specific structure of the drum and the achieved effect can be referred to in embodiment 2, and will not be repeated here.

[0067] The single-axis tracking bracket in this embodiment is similar to the dual-axis tracking bracket in embodiment 2. Therefore, the working principle and points to note are basically the same. The main difference is that there is no pitch adjustment structure and the reversing rotation mechanism 5 is not needed. The rest can be referred to embodiment 2, and will not be described in detail here.

[0068] Example 4 Based on Example 2 or Example 3, such as Figure 5 As shown, the pitch adjustment assembly 2 also includes guide pulleys 26. The guide pulleys 26 are distributed around the support frame 12. After the wire rope is released from the pitch adjustment drive assembly 25, it first passes around the guide pulley 26 on one side and then connects to the fixing ring 14 of the support frame 12.

[0069] In the embodiment described in this invention, the guide pulley 26 can change the direction of the pulling wire rope according to the relative position of the support frame 12 and the pitch adjustment component 2, so that the pulling wire rope always maintains a reasonable tension angle during the winding and unwinding process. Therefore, the force direction of the pulling wire rope can be optimized, avoiding wear. Furthermore, it can also constrain the pulling wire rope, eliminating swaying or deviation during winding and unwinding, ensuring a stable trajectory. This stability directly improves the accuracy of the photovoltaic panel module 200 angle adjustment, avoiding angle deviations caused by slackness or swaying of the pulling wire rope, ensuring that the photovoltaic panel module 200 always accurately tracks the sun's position, thereby maintaining high power generation efficiency.

[0070] It is worth mentioning that, in order to avoid a large pitch angle of the support frame 12 in a certain direction, which would cause a large skew angle of the tension wire rope and weaken the reverse support force of the tension wire rope on the support frame 12 in a high-wind environment, the optimal installation position of the guide pulley 26 is usually near the point directly below the connection point between the tension wire rope and the support frame 12. In this way, after the wire rope released from the pitch adjustment drive assembly 25 passes around the guide pulley 26 on one side and connects to the support frame 12, regardless of the pitch angle of the support frame 12, the entire tension wire rope is always taut, and the tension force provided by the wire rope is basically entirely applied in the vertical direction, which can provide a large reverse support force for the support frame 12 and maintain stability in a high-wind environment.

[0071] Furthermore, the guide pulley 26 can be fixed to the ground or a fixed base using pre-embedded anchor bolts or expansion bolts.

[0072] Furthermore, the column 11 is also equipped with a stay cable 100, the other end of which is connected to a fixed end on the ground. The stay cable 100 may be composed of parallel steel wires, parallel steel cables, single steel cables, steel wire ropes, closed steel cables, or solid steel bars. The stay cable 100 further enhances the lateral stability of the entire dual-axis tracking support, preventing the column 11 from tilting or deforming under long-term load or wind force.

[0073] It is understood that, for the single-axis tracking bracket or dual-axis tracking bracket described in the above embodiments of the present invention, the tension steel wire rope in the pitch adjustment component 2 not only serves as a structure for adjusting the pitch angle of the photovoltaic panel module 200, but also, through cooperation with the pitch adjustment drive component 25, drives the two opposing tension steel wire ropes to pull in and out, thereby causing the support frame 12 to rotate relative to the column 11, thus adjusting the pitch angle of the photovoltaic panel module 200 on it; at the same time, the tension characteristics of the tension steel wire rope can also provide a sufficiently large reverse support force to resist wind force, which can tie and fix the support frame 12, thereby enhancing the ability of the support frame 12 to resist extreme wind weather, preventing the support frame 12 from being overturned, and making the tracking system more stable. When encountering extreme weather such as strong winds, regardless of the wind direction, at least one or two tension steel wire ropes in one or two directions can directly resist the lateral force generated by the wind, effectively preventing the photovoltaic panel module and support frame from being overturned, thereby protecting the entire photovoltaic bracket system from wind damage.

[0074] Similarly, based on the above-mentioned structure for adjusting the pitch using a traction steel wire rope, this invention specifically proposes a photovoltaic panel assembly support and installation structure adapted to a steel wire rope-pulled photovoltaic tracking bracket. The entire support and installation structure is subjected to uniform force and will not experience stress concentration. Even in extreme windy weather, the reaction force of the steel wire rope used to pull the support frame 12 will not cause the frame to deform or crack.

[0075] Furthermore, in the single-axis or dual-axis tracking bracket proposed in this embodiment of the invention, the connection point between the steel wire rope and the support frame 12 is far from the column. Therefore, based on the lever principle, its force distribution is significantly better than the existing design of controlling the orientation of photovoltaic panel components closer to the central column. This reduces the load on the column 11 and the support structure, while still providing sufficient tensile strength to withstand strong winds. Thus, while ensuring structural strength, the amount of steel used in the column 11 and other structures can be reduced, thereby lowering the overall manufacturing cost and processing difficulty of the tracking bracket, while also reducing the overall weight of the bracket for easier transportation and installation. In addition, there is no need to add more wind-resistant structural designs, simplifying the overall structural design.

[0076] The single-axis or dual-axis tracking bracket proposed in this invention uses steel wire ropes installed around the support frame. The tension characteristics of these steel wire ropes allow for adjustment of the pitch angle of the photovoltaic panel module in various directions. Simultaneously, the tension characteristics of the steel wire ropes also provide sufficient reverse support force to resist wind. In extreme weather conditions such as strong winds, regardless of wind direction, at least one or two steel wire ropes can directly resist the lateral shear force generated by the wind, effectively preventing the photovoltaic panel module and support frame from being overturned, thus protecting the entire photovoltaic bracket system from wind damage. Therefore, the photovoltaic tracking bracket system of this invention has strong overall wind resistance.

[0077] Furthermore, the tracking bracket of the present invention organically combines the tilt angle adjustment of the photovoltaic panel module with the wind resistance support function through a steel wire rope structure. While satisfying the solar tracking function of the photovoltaic panel module, it also provides strong wind resistance support without the need for additional wind resistance structure design, thus simplifying the overall structural design and significantly reducing the manufacturing cost of the tracking bracket.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to hinder the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high wind-resistant solar photovoltaic panel support and installation structure, characterized in that, The system includes a support frame (12), which includes a fixing ring (14), a central disk (15) located at the center of the fixing ring (14), and a support frame (17) installed above the fixing ring (14). Several tie wire ropes (16) are connected between the fixing ring (14) and the central disk (15). The photovoltaic panel assembly (200) is fixed on the support frame (17). The central disk (15) is connected to the column (11) of the tracking bracket through a rotating joint (13).

2. The high wind-resistant solar photovoltaic panel support and installation structure according to claim 1, characterized in that, The central disk (15) includes a coaxial first central disk (151) and a second central disk (152). The second central disk (152) is located below the first central disk (151), and the two are connected by a connecting rod. A horizontal first tie wire rope (161) is evenly tied between the inner wall of the first central disk (151) and the fixing ring (14) along the circumference. An inclined second tie wire rope (162) is evenly tied between the second central disk (152) and the fixing ring (14) along the circumference. The second central disk (152) is connected to the column (11) of the tracking bracket through a rotating joint (13).

3. The high wind-resistant solar photovoltaic panel support and installation structure according to claim 2, characterized in that, The first central disk (151) and the fixed ring (14) are at the same horizontal level.

4. The high wind-resistant solar photovoltaic panel support and installation structure according to claim 1, characterized in that, The support frame (17) has a rectangular grid inside that matches the photovoltaic panel assembly (200), and the photovoltaic panel assembly (200) is installed in the rectangular grid.

5. The high wind-resistant solar photovoltaic panel support and installation structure according to claim 4, characterized in that, The support frame (17) is a grid structure formed by horizontally arranged horizontal and vertical bars intersecting each other.

6. The high wind-resistant solar photovoltaic panel support and installation structure according to claim 4, characterized in that, The support frame (17) includes a rectangular frame, and several crisscrossing steel cables or steel strands are installed inside the rectangular frame. The crisscrossing steel cables or steel strands divide the interior of the rectangular frame into several rectangular grids that match the photovoltaic panel components (200). Each rectangular grid is equipped with a photovoltaic panel component (200).

7. The high wind-resistant solar photovoltaic panel support and installation structure according to claim 6, characterized in that, The rectangular frame is formed by steel cable or steel strand. Support rods (18) are provided between the four corners of the rectangular frame and the fixing ring (14). One end of the support rod (18) is connected to the fixing ring (14), and the other end abuts against the 90° inner corner of the rectangular frame.

8. A photovoltaic tracking bracket, characterized in that, The high wind-resistant solar photovoltaic panel support and installation structure includes any one of claims 1-7.

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