Adjustable photovoltaic support

Abstract

The invention relates to an adjustable photovoltaic support which comprises a plurality of supporting columns, photovoltaic panel mounting racks and a reduction gearbox, the plurality of supporting columns are horizontally and linearly arranged, the number of the photovoltaic panel mounting racks is in one-to-one correspondence with the number of the supporting columns, and the reduction gearbox is in one-to-one correspondence with the number of the photovoltaic panel mounting racks. The bottom end of each photovoltaic panel installation frame is fixedly connected with arc-shaped rail steel, the output end of the reduction gearbox is coaxially and fixedly connected with a transmission shaft, the input end of the reduction gearbox is fixedly connected with an adjusting rod, and the positions, corresponding to the supporting stand columns, of the transmission shaft are connected with the arc-shaped rail steel through transmission structures. According to the photovoltaic support, the problem that when the angle of an existing photovoltaic support is manually adjusted, the angle is not uniform, and the economical efficiency of operation and maintenance of a photovoltaic power generation system is remarkably affected is solved by means of the photovoltaic support, the torque output by the reduction gearbox is synchronously transmitted to all the arc-shaped rail steel, and the top end of each supporting stand column is rotationally connected with a rotating support.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of photovoltaic devices, in particular to an adjustable photovoltaic support. BACKGROUND

[0002] In a solar photovoltaic power generation system, the fixed support of the photovoltaic panel is the core component that maintains the stable operation of the system and guarantees the energy conversion efficiency. It is not just a basic component that bears the load. It not only needs to provide reliable support for the photovoltaic panel to ensure its structural stability in complex environments, but also needs to have the ability to adjust the angle to dynamically respond to the natural changes in the sun's angle with the alternation of seasons and day and night. By accurately adapting to the direction of sunlight, the photovoltaic panel can always be in the optimal light receiving posture, thereby maximizing the capture of solar radiation energy and effectively avoiding energy waste caused by deviation in the light receiving angle. The sunlight receiving efficiency of the photovoltaic panel, as a key pre-process of energy input in the photovoltaic power generation process, is directly dependent on the accuracy of the support angle adjustment. When the panel can continuously and efficiently receive sunlight, the basic potential of converting light energy into electrical energy can be fully released. Conversely, if the light receiving angle is poor, the subsequent energy conversion process will be limited from the source. Therefore, the angle adjustment function of the support not only directly affects the sunlight receiving efficiency of the photovoltaic panel, but also from the initial stage of energy acquisition, deeply determines the final power generation efficiency and energy output level of the entire photovoltaic power generation system, and is an important support for ensuring the long-term efficient operation of the system.

[0003] In the daily operation and maintenance of a solar photovoltaic power generation system, in order to ensure that the photovoltaic panel always maintains the optimal light receiving posture, the angle of the fixed support needs to be regularly adjusted every year and every season. This process often requires continuous and considerable labor costs. From the application of existing technology, the angle adjustment of the photovoltaic panel fixed support requires the maintenance personnel to adjust each support one by one. This operation method not only has low efficiency, but is also easily affected by factors such as the accuracy and experience of manual operation, thereby causing the problem of non-uniformity of the support angle. Once the support angle deviates, the subsequent adjustment work will be more complicated. The maintenance personnel needs to re-calibrate the deviated support angle block by block. Not only a lot of time is spent on checking the angle of each support, but also professional angle measuring tools need to be carried additionally. Through multiple comparisons, adjustments and verifications, the angle of each support is ensured to meet the standard. Such an operation process not only greatly prolongs the time period of a single operation, but also further adds the burden of labor costs due to repeated manual operations and precision verification links, which significantly affects the economy of photovoltaic power generation system operation and maintenance. SUMMARY

[0004] To address the aforementioned technical issues, this disclosure provides an adjustable photovoltaic support system, which aims to resolve the problem of inconsistent angles when manually adjusting existing photovoltaic support systems, significantly impacting the economic efficiency of photovoltaic power generation system operation and maintenance.

[0005] This disclosure provides an adjustable photovoltaic support structure, including support columns, photovoltaic panel mounting frames, and a reduction gearbox. Multiple support columns are arranged horizontally in a straight line. The number of photovoltaic panel mounting frames corresponds one-to-one with the number of support columns. Each photovoltaic panel mounting frame has an arc-shaped rail steel fixedly connected to its bottom end. A drive shaft is coaxially fixedly connected to the output end of the reduction gearbox, and an adjustment rod is fixedly connected to the input end of the reduction gearbox. The drive shaft is connected to the arc-shaped rail steel at corresponding positions on each support column via a transmission structure, used to synchronously transmit the torque output from the reduction gearbox to all arc-shaped rail steels.

[0006] Preferably, each supporting column is rotatably connected to a rotating support at its top, and each rotating support is fixedly connected to a photovoltaic panel mounting frame at its top. The arc-shaped track steel is coaxial with the rotation axis of the rotating support.

[0007] Preferably, each of the arc-shaped rail steels has an internal gear on its inner ring, and each of the supporting columns has a drive gear rotatably connected to its surface, with each drive gear meshing with the internal gear of the corresponding arc-shaped rail steel.

[0008] Preferably, each of the supporting columns is rotatably connected to a transmission bevel gear, each transmission bevel gear is coaxially and fixedly connected to a corresponding drive gear, and the transmission shaft is coaxially and fixedly connected along its length to a number of drive bevel gears, each drive bevel gear meshing with a corresponding transmission bevel gear.

[0009] Preferably, each of the support columns has a support frame fixedly connected to its surface, the support frame being used to support the drive shaft.

[0010] Preferably, each of the support frames is fitted with a support bearing on its surface, and the inner ring of each support bearing is interference-fitted with the corresponding position of the drive shaft, and the drive shaft forms a rotatable fit with the support frame through the support bearing.

[0011] Preferably, a locking turntable is coaxially fixedly connected to the surface of the adjusting rod.

[0012] Preferably, the surface of the locking turntable is provided with a plurality of locking holes arranged in a ring array along the circumferential direction, and the surface of the gearbox housing is provided with an embedding groove that matches the diameter of the locking hole and corresponds to the position of the locking hole at the movement trajectory of the locking hole of the locking turntable.

[0013] Preferably, the adjusting rod is an L-shaped rod, one end of which is coaxially and fixedly connected to the input end of the gearbox, and the other end is rotatably connected to a handle.

[0014] Preferably, each of the supporting columns is fixedly connected to a fixing seat at its bottom end.

[0015] The technical solution provided in this disclosure has the following advantages compared with the prior art: 1. By connecting the adjustment structures of all photovoltaic brackets within the same group in series via a drive shaft, the individual brackets that previously required separate operation are integrated into a unified adjustment unit with linkage capability. This breaks the decentralized mode of manual adjustment piece by piece. Through the series integration of the drive shaft and the coordinated cooperation of the reduction gearbox and gear assembly, the synchronous angle adjustment of the entire photovoltaic panel bracket group can be achieved without manual intervention for each bracket. This fundamentally avoids the inconsistency in angle caused by differences in manual operation, ensuring that all solar panels maintain a consistent angle of light reception after adjustment, making the angle adjustment process highly efficient.

[0016] 2. The reduction gearbox possesses the core capability of outputting high torque. This strong and stable torque can easily handle the overall load faced when the entire bracket set is adjusted in tandem, providing sufficient driving force for bracket angle adjustment. This ensures that the adjustment process can proceed smoothly even when the entire bracket set is moving synchronously. Based on this characteristic, operators no longer need to perform tedious operations by approaching each bracket piece individually as in the traditional mode. They only need to drive the reduction gearbox simply. Whether manually triggered or started through a simple control method, the high torque output can drive the entire bracket set connected in series to complete the angle adjustment. There is no need to invest a lot of manpower in decentralized operations. This operating mode fundamentally changes the traditional manual adjustment method that relies on multiple people working together and is time-consuming and labor-intensive, making the photovoltaic bracket angle adjustment process more economical and efficient in terms of manpower investment. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the adjustable photovoltaic support described in the embodiments of this disclosure; Figure 2This is a schematic diagram of the adjustable photovoltaic support gearbox described in an embodiment of this disclosure; Figure 3 This is a cross-sectional structural diagram of the adjustable photovoltaic support described in an embodiment of this disclosure; Figure 4 This is a schematic diagram of the adjustable photovoltaic support column described in an embodiment of the present disclosure.

[0020] The components include: 1. Fixed base; 2. Support column; 3. Rotary support; 4. Photovoltaic panel mounting frame; 5. Arc-shaped rail steel; 6. Drive gear; 7. Transmission bevel gear; 8. Support frame; 9. Support bearing; 10. Active bevel gear; 11. Drive shaft; 12. Gearbox; 13. Locking turntable; 14. Locking hole; 15. Adjusting rod; and 16. Handle. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0023] Please refer to Figures 1-4This is an adjustable photovoltaic (PV) bracket, comprising support columns 2, PV panel mounting frames 4, and a reduction gearbox 12. Multiple support columns 2 are arranged horizontally in a straight line. The number of PV panel mounting frames 4 corresponds one-to-one with the number of support columns 2. Each support column 2 has a rotating support 3 rotatably connected to its top, and each rotating support 3 has a PV panel mounting frame 4 fixedly connected to its top. Each PV panel mounting frame 4 has an arc-shaped rail 5 fixedly connected to its bottom end, and the arc-shaped rail 5 is coaxial with the rotation axis of the rotating support 3. When the arc-shaped rail 5 moves in a circular motion along this axis, it directly drives the PV panel mounting frame 4 to rotate around the connection point between the rotating support 3 and the support column 2, thereby adjusting the angle of the PV panel mounting frame 4. The output end of the reduction gearbox 12 is... A drive shaft 11 is fixedly connected to the shaft, and an adjusting rod 15 is fixedly connected to the input end of the reduction gearbox 12. During operation, by rotating the adjusting rod 15, the high input speed can be converted into a low speed and high torque output torque through the meshing of the gears inside the reduction gearbox 12, driving the drive shaft 11 to rotate smoothly. This design can achieve the dual effects of labor-saving adjustment and uniform angle change. At the corresponding positions of the drive shaft 11 and each support column 2, it is connected to the arc-shaped rail steel 5 through a transmission structure, which is used to synchronously transmit the torque output by the reduction gearbox 12 to all the arc-shaped rail steel 5. Through the above design, rotating the drive shaft 11 can synchronously drive all the arc-shaped rail steel 5 to make the same angle of circular motion, ensuring that the adjustment angle of all photovoltaic panel mounting frames 4 is completely uniform, and finally realizing the series synchronous adjustment of the entire bracket.

[0024] The power generation efficiency of photovoltaic panels is directly related to the incident angle of sunlight. The solar altitude angle naturally varies with the seasons and time of day. A fixed-angle bracket cannot adapt to these changes, affecting power generation. The rotating support 3, connected to the supporting column 2, provides a stable rotation axis for the photovoltaic panel mounting frame 4. The arc-shaped track steel 5 remains coaxial with this axis, laying the foundation for angle adjustment. When manually adjusting the photovoltaic bracket, the reduction gearbox 12, through internal gear transmission, converts the input force of the adjusting rod 15 into a more suitable output force to drive the bracket, significantly reducing the difficulty of operation. Even ordinary people can easily complete the adjustment. This transmission method allows the drive shaft 11 to rotate more smoothly, resulting in uniform angle changes in the photovoltaic panel mounting frame 4. The connection design between the drive shaft 11 and each arc-shaped rail steel 5 enables synchronous torque transmission. By operating only one adjusting rod 15, all arc-shaped rail steel 5 can move synchronously, thereby allowing all photovoltaic panel mounting frames 4 to rotate at the same angle. This significantly improves adjustment efficiency and ensures the uniformity of the angles of all photovoltaic panels. The coaxial design of the arc-shaped rail steel 5 and the rotating support 3 avoids excessive load on a single component, effectively extending the service life of the bracket and enabling it to be stably adapted to the outdoor environment for a long time.

[0025] Each arc-shaped track steel 5 has an internal gear on its inner ring, and each support column 2 has a drive gear 6 rotatably connected to its surface. Each drive gear 6 meshes with the internal gear of the corresponding arc-shaped track steel 5. During operation, the rotation of the drive gear 6 will drive the arc-shaped track steel 5 to make a circular motion around the rotation axis of the rotating support 3 through gear meshing transmission, thereby realizing the control of the angle of the photovoltaic panel mounting frame 4.

[0026] Each support column 2 has a rotatably connected transmission bevel gear 7 on its surface. Each transmission bevel gear 7 is coaxially and fixedly connected to the corresponding drive gear 6. The transmission shaft 11 has a number of drive bevel gears 10 coaxially and fixedly connected along its length. Each drive bevel gear 10 meshes with the corresponding transmission bevel gear 7. When the transmission shaft 11 rotates, it will synchronously drive all the drive bevel gears 10 on its surface to rotate. The drive bevel gears 10 drive the corresponding transmission bevel gears 7 to rotate in sequence through meshing. Since the transmission bevel gears 7 are coaxially fixed with the drive gear 6, they will synchronously drive the drive gear 6 to rotate. Finally, the drive gear 6, through meshing with the internal gear of the arc-shaped track steel 5, drives the arc-shaped track steel 5 to make a circular motion around the axis of the rotating support 3, thereby realizing the angle adjustment of the photovoltaic panel mounting frame 4.

[0027] The curved track steel 5 needs to perform circular motion, and the internal gear is located inside it and meshes with the drive gear 6. This allows the rotational force of the drive gear 6 to be directly converted into the circumferential driving force of the curved track steel 5. Compared with external meshing or other transmission methods, the transmission path of internal meshing is closer to the motion trajectory of the curved track steel 5, and will not generate additional offset force. Moreover, the rigid transmission of gear meshing can prevent slippage and ensure that the torque is completely transmitted to the curved track steel 5, thereby stably driving the photovoltaic panel mounting frame 4 to rotate. The active bevel gear 10 rotates horizontally with the transmission shaft 11, and through its interaction with the transmission bevel gear 10, it drives the photovoltaic panel mounting frame 4 to rotate. The meshing of gear 7 enables a 90° change in the transmission direction of horizontal torque. All active bevel gears 10 are coaxially fixed on the transmission shaft 11. When the transmission shaft 11 rotates, all active bevel gears 10 will rotate synchronously at the same speed. Then, through the meshing relationship, they drive the corresponding transmission bevel gears 7 and drive gears 6 to rotate synchronously. Ultimately, the speed and rotation angle of each drive gear 6 driving the arc-shaped track steel 5 are completely consistent, avoiding speed deviation caused by differences in transmission paths and ensuring that the angle adjustment of all photovoltaic panel mounting frames 4 is always synchronized.

[0028] Each support column 2 has a support frame 8 fixedly connected to its surface, and each support frame 8 has a support bearing 9 embedded in its surface. The inner ring of each support bearing 9 is interference-fitted with the corresponding position of the drive shaft 11. The drive shaft 11 forms a rotatable fit with the support frame 8 through the support bearing 9. In this structure, the support frame 8 serves as a fixed support component and provides radial support to the drive shaft 11 through the support bearing 9. This ensures that the drive shaft 11 maintains coaxiality during rotation and reduces the resistance of the drive shaft 11 during rotation through the rolling friction of the bearing.

[0029] By using the fixed support of the support frame 8 and the radial limiting of the support bearing 9, the coaxiality of the drive shaft 11 is ensured, guaranteeing the accuracy of synchronous transmission. The drive shaft 11 is relatively long and needs to drive multiple active bevel gears 10 to rotate synchronously. Without stable support, the drive shaft 11 is prone to radial displacement under its own weight, rotational torque, or outdoor light wind disturbance, causing its axis to deviate from the preset trajectory. The support frame 8 provides a stable installation reference for the support bearing 9. The inner ring of the support bearing 9 is interference-fitted with the drive shaft 11, and the outer ring is embedded in the support frame 8, which can accurately limit the radial displacement of the drive shaft 11, forcing it to always rotate around the preset axis. This ensures that all active bevel gears 10 always maintain a precise meshing state with the corresponding drive bevel gears 7, avoiding problems such as increased gear meshing clearance and misalignment caused by axis deviation. This ensures that the speed of each set of transmission chains is consistent, and ultimately achieves synchronous angle adjustment of all photovoltaic panel mounting frames 4. By utilizing the rolling friction characteristics of the support bearing 9, the rotational resistance of the drive shaft 11 is reduced, taking into account both ease of operation and component life.

[0030] A locking turntable 13 is coaxially fixed to the surface of the adjusting rod 15. The surface of the locking turntable 13 has multiple locking holes 14 arranged in a circular array along the circumferential direction. On the surface of the gearbox 12 housing, at the movement trajectory of the locking holes 14 of the locking turntable 13, there are embedded grooves that match the diameter and position of the locking holes 14. When the angle of the photovoltaic panel mounting frame 4 is adjusted to the correct position, one end of a common pin or bolt is passed through any one of the locking holes 14 on the locking turntable 13, and the other end is embedded in the corresponding embedded groove of the gearbox 12. The rotation of the locking turntable 13 can be restricted by mechanical limit. Since the locking turntable 13 is coaxially fixed to the adjusting rod 15, it can prevent the adjusting rod 15 from rotating accidentally and driving the transmission shaft 11 to move together, and finally achieve the angle locking of all photovoltaic panel mounting frames 4.

[0031] The locking turntable 13 and locking hole 14 prevent the adjustment rod 15 from rotating accidentally, ensuring the long-term stability of the photovoltaic panel angle. The mechanical limit of the locking turntable 13 is directly restricted by the pin passing through the locking hole 14 and the embedding groove, locking the adjustment rod 15 from the source. Ultimately, it ensures that the angle of all photovoltaic panel mounting brackets 4 is always kept in the set position. The adjustment angle of the photovoltaic panel is not a fixed value and needs to be flexibly adjusted according to the season and region. The locking holes 14 on the locking turntable 13 are arranged in a circular array along the circumference with a preset solar radiation optimized rotation angle. This means that for every minimum rotation angle, a locking hole 14 can be aligned with the embedding groove of the gearbox 12 housing. Moreover, when maintaining photovoltaic brackets outdoors, it is often difficult for workers to carry complicated tools. Pins or bolts are common and easily accessible simple parts that can be inserted and removed without special tools. The whole process is efficient and labor-saving, greatly reducing the operational threshold for outdoor maintenance.

[0032] The adjusting rod 15 is an L-shaped rod. One end of the adjusting rod 15 is coaxially fixedly connected to the input end of the gearbox 12, and the other end is rotatably connected to the handle 16. During operation, the handle 16 is held and rotated around the connecting axis between the adjusting rod 15 and the gearbox 12, which will drive the adjusting rod 15 to rotate synchronously, thereby driving the subsequent transmission structure through the gearbox 12.

[0033] Each support column 2 is fixedly connected to a mounting base 1 at its bottom. The mounting base 1 has anchor bolt holes at its bottom. After the anchor bolts are passed through the mounting holes of the mounting base 1 and tightened to the ground, the vertical bearing capacity and anti-overturning stability of the support column 2 can be greatly improved, thus achieving reliable reinforcement of the support column 2.

[0034] The specific operation is as follows: Initial installation and fixing: Attach the fixing seat 1 at the bottom of the support column 2 to the preset installation position on the ground; take the anchor bolt, pass it through the anchor bolt hole at the bottom of the fixing seat 1, and tighten the bolt to the pre-embedded foundation or hardened ground. Tighten the fasteners until there is no looseness, thereby improving the vertical bearing capacity and anti-overturning stability of the support column 2 and completing the foundation fixing of the main body of the support.

[0035] Pre-installation of photovoltaic panels: Fix the photovoltaic panels to be installed one by one to the top of the photovoltaic panel mounting frame 4 to ensure that the photovoltaic panels are firmly connected to the mounting frame and to prevent the photovoltaic panels from shifting during subsequent angle adjustments.

[0036] Photovoltaic panel mounting bracket angle adjustment: Observe the mating position between the gearbox 12 housing and the locking turntable 13, pull out the pin that passes through the locking hole 14 of the locking turntable 13 and the embedded groove of the gearbox 12, and release the mechanical limit on the locking turntable 13.

[0037] Manual drive adjustment structure: Hold the handle 16 at the end of the adjustment rod 15 and rotate it around the axis connecting the adjustment rod 15 and the input end of the reduction gearbox 12; the adjustment rod 15 drives the input end of the reduction gearbox 12 to rotate, and through the meshing transmission of the gears inside the reduction gearbox 12, the high input speed is converted into a low speed and high torque output torque, which drives the transmission shaft 11 to rotate smoothly.

[0038] Synchronous transmission and angle change: When the transmission shaft 11 rotates, all the active bevel gears 10 on its surface rotate synchronously, driving the transmission bevel gears 7 on the corresponding support column 2 to rotate through gear meshing; since the transmission bevel gears 7 and the drive gears 6 are coaxially fixed, the transmission bevel gears 7 synchronously drive the drive gears 6 to rotate; the drive gears 6 mesh with the inner gear of the inner ring of the arc-shaped track steel 5, driving the arc-shaped track steel 5 to make circular motion around the rotation axis of the rotating support 3; the arc-shaped track steel 5 drives the photovoltaic panel mounting frame 4 at the top to rotate around the connection point between the rotating support 3 and the support column 2 as the axis, realizing the adjustment of the photovoltaic panel angle.

[0039] Angle calibration: During the adjustment process, when the preset solar optimization angle locking hole 14 is aligned with the embedded groove, stop rotating the handle 16.

[0040] Angle locking: After confirming that the photovoltaic panel mounting bracket 4 is in the correct angle, keep the adjusting rod 15 stationary; pass one end of the pin or bolt through the locking hole 14 of the locking turntable 13, and insert the other end into the groove of the gearbox 12, tighten the bolt or insert the pin, and limit the rotation of the locking turntable 13 by mechanical limit; since the locking turntable 13 is coaxially fixed with the adjusting rod 15, it can prevent the adjusting rod 15 from rotating accidentally and driving the transmission shaft 11 to move together, and finally achieve the angle locking of all photovoltaic panel mounting brackets 4.

[0041] Routine inspection and maintenance: Regularly (e.g., once a month) check whether the anchor bolts of the fixed seat 1 are loose. If they are loose, they need to be tightened again. Check whether the support bearing 9 rotates flexibly. If there is jamming or abnormal noise, add lubricating oil or replace the bearing. Check whether the locking device is intact. If the locking hole 14 is worn or the pin is deformed, the parts need to be replaced in time to ensure reliable angle locking.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable photovoltaic support frame, comprising a support column (2), a photovoltaic panel mounting frame (4), and a gearbox (12), characterized in that, The number of the supporting columns (2) is multiple, and the multiple supporting columns (2) are arranged in a horizontal straight line. The number of photovoltaic panel mounting frames (4) corresponds one-to-one with the supporting columns (2). The bottom end of each photovoltaic panel mounting frame (4) is fixedly connected to an arc-shaped rail steel (5). The output end of the gearbox (12) is coaxially fixedly connected to a drive shaft (11). The input end of the gearbox (12) is fixedly connected to an adjusting rod (15). The drive shaft (11) is connected to the arc-shaped rail steel (5) at the corresponding position of each supporting column (2) through a transmission structure, which is used to synchronously transmit the torque output by the gearbox (12) to all the arc-shaped rail steels (5).

2. An adjustable photovoltaic bracket according to claim 1, characterized in that, Each support column (2) is rotatably connected to a rotating support (3) at its top end, and each rotating support (3) is fixedly connected to a photovoltaic panel mounting frame (4) at its top end. The arc-shaped track steel (5) is coaxial with the rotation axis of the rotating support (3).

3. An adjustable photovoltaic support according to claim 1, characterized in that, Each of the arc-shaped rail steels (5) has an internal gear on its inner ring, and each of the supporting columns (2) has a drive gear (6) rotatably connected to its surface, and each drive gear (6) meshes with the internal gear of the corresponding arc-shaped rail steel (5).

4. An adjustable photovoltaic support according to claim 3, characterized in that, Each of the supporting columns (2) is rotatably connected to a transmission bevel gear (7), and each transmission bevel gear (7) is coaxially fixedly connected to a corresponding drive gear (6). The transmission shaft (11) is coaxially fixedly connected to a number of drive bevel gears (10) in the same length direction as the transmission bevel gears (7), and each drive bevel gear (10) is meshed with a corresponding transmission bevel gear (7).

5. An adjustable photovoltaic support according to claim 1, characterized in that, Each of the support columns (2) is fixedly connected to a support frame (8), which is used to support the drive shaft (11).

6. An adjustable photovoltaic bracket according to claim 5, characterized in that, Each of the support frames (8) is fitted with a support bearing (9) on its surface. The inner ring of each support bearing (9) is interference-fitted with the corresponding position of the drive shaft (11). The drive shaft (11) forms a rotatable fit with the support frame (8) through the support bearing (9).

7. An adjustable photovoltaic support according to claim 1, characterized in that, The surface of the adjusting rod (15) is coaxially fixedly connected to a locking turntable (13).

8. An adjustable photovoltaic bracket according to claim 7, characterized in that, The surface of the locking turntable (13) is provided with a plurality of locking holes (14) arranged in a ring array along the circumferential direction. The surface of the housing of the gearbox (12) is provided with an embedding groove that matches the diameter of the locking hole (14) and corresponds to the position of the locking hole (14) at the movement trajectory of the corresponding locking turntable (13).

9. An adjustable photovoltaic support according to claim 1, characterized in that, The adjusting rod (15) is an L-shaped rod. One end of the adjusting rod (15) is coaxially fixedly connected to the input end of the gearbox (12), and the other end is rotatably connected to a handle (16).

10. An adjustable photovoltaic support according to claim 1, characterized in that, Each of the support columns (2) is fixedly connected to a mounting base (1) at its bottom end.

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