Photovoltaic panel fixing device

Abstract

The application discloses a photovoltaic panel fixing device and relates to the technical field of new energy sources.The cooperation between a foundation screw, a connecting piece, a mounting nail, a mounting sleeve, a deformation sheet and a fastening cap enables the foundation screw to slide along the mounting frame, and the connecting piece can adjust the mounting position along the foundation screw during the installation process, so that the installation point can be quickly calibrated within a certain range, the influence of the position error of the steel structure opening on the installation precision is reduced, the positioning difficulty in the high-altitude installation process is reduced, and the construction efficiency is improved; after the installation is completed, the mounting frame still has a trace of horizontal compensation capacity, can release the assembly error accumulated during the installation of multiple photovoltaic panels and the stress generated by thermal expansion and cold contraction, and reduces the long-term stress concentration of the connecting part.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to photovoltaic panel fixing devices. Background Technology

[0002] With seasonal power shortages in cities, urban photovoltaic (PV) systems are becoming increasingly common. Investment in factories, in particular, can alleviate seasonal power shortages and reduce production costs. However, given the scarcity of urban land, most installations are on rooftops. Factory roofs, with their large spans and steel structures, present significant challenges. Traditional complex PV panel mounting frames, being too heavy, place a heavy burden on the large-span roof structure. Simple installations based on existing steel structures, combined with the varying thermal expansion and contraction characteristics of different materials, are prone to loosening over time due to temperature changes. Using gaskets requires periodic inspection and tightening, which is costly. Loosening of PV panel connections over time can lead to anything from swaying and making noise in strong winds to the panels detaching and posing a safety hazard. Furthermore, loose connections cause the PV panels to sway frequently in strong winds, placing additional strain on the steel structure. Summary of the Invention

[0003] The purpose of this invention is to address the issues of weight limitations in traditional steel-structure roof photovoltaic panel installation structures and the difficulty in balancing cost and long-term application with simple structures, and to propose a photovoltaic panel fixing device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic panel fixing device, including a mounting frame for installing photovoltaic panels on a steel structure, wherein the mounting frame and the steel structure are installed through a fixing structure, the fixing structure including a base screw that slides horizontally on the mounting frame, and a connecting piece that slides on the base screw, wherein a mounting pin is rotatably installed on the connecting piece, and a mounting sleeve and a fastening cap that pre-presses the mounting sleeve are threaded onto the mounting pin;

[0005] The mounting sleeve has several deformation plates in the middle. When two wrenches fix one end of the mounting sleeve and twist the mounting nail, the deformation plates are squeezed and twisted obliquely, forming a spiral-shaped upper and lower clamping and an inner expansion multi-directional flexible compression fixation.

[0006] As a further description of the above technical solution: the connector includes a deflection plate, on which a sliding hole and a rotating hole are provided. The sliding hole is elongated and the base screw slides through the sliding hole, and the mounting pin rotates through the rotating hole.

[0007] As a further description of the above technical solution: the mounting pin includes a shaft and a rotating part fixed on the shaft. The bottom end of the shaft is provided with a threaded part, and the top end of the shaft is provided with a top head. The top head is polygonal in shape.

[0008] As a further description of the above technical solution: the mounting sleeve also includes a torsion cap and a threaded seat located at both ends of several deformable plates and fixed together, the threaded seat being threadedly engaged with the threaded portion, and the torsion cap being slidably disposed on the shaft.

[0009] As a further description of the above technical solution: both ends of the mounting bracket are provided with connecting angle irons for fixing to another mounting bracket, and the bottom of the connecting angle irons is provided with positioning holes for the base screws to pass through and lock.

[0010] As a further description of the above technical solution: T-shaped grooves are provided on both the upper and lower sides of the mounting bracket for horizontal sliding limit of various types of bolts, and the upper T-shaped groove is fixed with a clamp for fixing the photovoltaic panel by mounting screws.

[0011] As a further description of the above technical solution: the deformable sheet includes at least one of a wavy sheet or a straight sheet, and the wavy sheet and the straight sheet are arranged alternately.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] 1. This invention utilizes the cooperation between the base screw, connector, mounting nail, mounting sleeve, deformation plate, and fastening cap. During installation, the base screw can slide along the mounting frame, and the connector can adjust the installation position along the base screw. This allows the installation point to be quickly calibrated within a certain range, reducing the impact of steel structure opening position errors on installation accuracy, reducing positioning difficulty during high-altitude installation, and improving construction efficiency. After installation, the mounting frame still retains a small amount of horizontal compensation capability, which can release the assembly errors accumulated from the installation of multiple photovoltaic panels and the stress generated by thermal expansion and contraction, reducing the long-term stress concentration at the connection points.

[0014] 2. Through the threaded driving action of the mounting pin and the mounting sleeve, the deformation plates inside the mounting sleeve simultaneously generate radial expansion and oblique torsion during axial compression. The corrugated plates form clamping on both sides of the steel structure opening, while the straight plates form filling and extrusion on the inner side of the hole wall. During continuous rotation, a spiral multi-directional locking state is further formed, so that the fixed structure has axial limiting ability, radial support ability, and circumferential anti-rotation ability, which greatly improves the anti-loosening performance of the connection node and avoids the problem of reduced fixing force caused by long-term vibration in traditional unidirectional expansion structures.

[0015] 3. By combining corrugated and straight plates with different deformation modes, the corresponding mounting sleeve can be selected for steel structures of different thicknesses, number of layers, and installation environments. This allows the fixing structure to adapt to various installation conditions such as thin plates, multi-layer steel plates, and wall openings, forming a stable and reliable flexible fit and fixing effect. This improves the applicability of the structure, reduces the number of mounting parts, and lowers construction and maintenance costs.

[0016] 4. The flexible pre-tightening structure formed by the deformation sheet can maintain the tight compression of the steel structure opening when the photovoltaic panel is subjected to wind load, vibration and diurnal temperature variation for a long time. It can automatically compensate for the connection gap, reduce the loosening of the connection caused by thermal expansion and contraction, reduce the number of times of re-tightening and maintenance, avoid photovoltaic panel shaking, abnormal noise and connection failure, and improve the safety and stability of the photovoltaic panel installation system in the long term. Attached Figure Description

[0017] Figure 1 A three-dimensional schematic diagram according to the present invention is shown;

[0018] Figure 2 A frontal view schematic diagram according to the present invention is shown;

[0019] Figure 3 A partial schematic diagram of the left view according to the present invention is shown;

[0020] Figure 4 A partial perspective view of the fixing structure according to the present invention is shown;

[0021] Figure 5 An exploded view of the mounting structure according to the present invention is shown;

[0022] Figure 6 A cross-sectional schematic diagram of the mounting structure according to the present invention is shown.

[0023] Legend:

[0024] 1. Mounting bracket; 2. Fixing structure; 21. Base screw; 22. Connector; 221. Deflector plate; 222. Sliding hole; 223. Rotating hole; 23. Mounting pin; 231. Shaft; 232. Top head; 233. Threaded part; 234. Rotating part; 24. Mounting sleeve; 241. Torque cap; 242. Threaded seat; 243. Deformation plate; 25. Fastening cap; 3. Connecting angle iron; 4. Clamp; 5. Photovoltaic panel. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1-6 As shown, the photovoltaic panel 5 fixing device provided by the present invention includes a mounting frame 1 for mounting the photovoltaic panel 5 on a steel structure. The mounting frame 1 is installed with the steel structure through a fixing structure 2. The fixing structure 2 includes a base screw 21 that slides horizontally on the mounting frame 1, and a connecting member 22 that slides on the base screw 21. A mounting pin 23 is rotatably mounted on the connecting member 22. A mounting sleeve 24 and a fastening cap 25 that pre-presses the mounting sleeve 24 are threaded onto the mounting pin 23.

[0027] Mounting frame 1 serves as the main load-bearing structure for photovoltaic panel 5, supporting the photovoltaic panel 5 and transferring the load to the steel structure. Fixing structure 2 enables quick connection between mounting frame 1 and the steel structure, while also providing functions such as installation position adjustment, connection locking, and long-term anti-loosening. The base screw 21 can slide horizontally along the mounting frame 1 to accommodate different opening positions in the steel structure. Connector 22 acts as a transitional connection between mounting nail 23 and mounting frame 1, and after position adjustment, it is locked in place by the base screw 21, allowing the mounting frame 1 to be quickly positioned and installed.

[0028] The mounting sleeve 24 has several deformation plates 243 in the middle. When the two wrenches fix one end of the mounting sleeve 24 and twist the mounting nail 23, the deformation plates 243 are squeezed and twisted obliquely, forming a spiral-shaped upper and lower clamping and an inner expansion multi-directional flexible compression fixation.

[0029] During the rotation of the mounting pin 23, the rotational motion is converted into axial clamping motion through the threaded engagement between the mounting pin 23 and the mounting sleeve 24, causing the two ends of the mounting sleeve 24 to gradually approach each other. The deformation piece 243 located in the middle undergoes controlled deformation under axial pressure. As the compression increases, the deformation piece 243 not only expands radially to adhere to the inner wall of the steel structure opening, but also undergoes oblique twisting under continuous torque, causing each deformation piece 243 to form a spiral distribution. This simultaneously generates axial clamping force, radial support force, and circumferential friction force, improving the pull-out resistance, rotation resistance, and vibration resistance of the fixed structure 2, and ensuring that the connection remains stable and locked under long-term wind loads and thermal expansion and contraction conditions.

[0030] Specifically, such as Figure 5As shown, the connector 22 includes a deflection plate 221, on which a sliding hole 222 and a rotating hole 223 are provided. The sliding hole 222 is elongated, and the base screw 21 slides through the sliding hole 222, while the mounting nail 23 rotates through the rotating hole 223.

[0031] The length direction of the sliding hole 222 is consistent with the length direction of the mounting bracket 1, allowing the base screw 21 to be adjusted horizontally within the sliding hole 222 to compensate for the positional error of the steel structure opening and improve on-site installation efficiency. The rotating hole 223 provides stable rotational support for the mounting nail 23, keeping the axis of the mounting nail 23 stable during rotation, preventing the mounting nail 23 from tilting, and improving the uniformity of force on the deformation plate 243. The deflection plate 221, while connecting the mounting bracket 1 and the mounting nail 23, can also adapt to small angular deviations that occur during installation, improving the overall adaptability of the installation.

[0032] The mounting pin 23 includes a shaft 231 and a rotating part 234 fixed on the shaft 231. The bottom end of the shaft 231 is provided with a threaded part 233, and the top end of the shaft 231 is provided with a top head 232, which is polygonal in shape.

[0033] The shaft 231, as the main load-bearing part of the mounting pin 23, is responsible for bearing the axial tensile force and torsional load during the installation process; the threaded part 233 is used to form a threaded transmission with the threaded seat 242 on the mounting sleeve 24, converting the rotational motion into axial displacement; the rotating part 234 facilitates the application of torque by the operator; the top head 232 adopts a polygonal structure, which can reliably cooperate with the wrench, improve the stability of force application, avoid slippage during the installation process, and improve the installation efficiency.

[0034] The mounting sleeve 24 also includes a torsion cap 241 and a threaded seat 242 that are fixed together at both ends of a plurality of deformable pieces 243. The threaded seat 242 is threadedly engaged with the threaded portion 233, and the torsion cap 241 is slidably mounted on the shaft 231.

[0035] The threaded seat 242 serves as the transmission end of the mounting sleeve 24. During the rotation of the mounting pin 23, it moves axially along the threaded portion 233 and gradually compresses the deformation piece 243 located in the middle. The torsion cap 241 serves as the limiting structure at the other end of the mounting sleeve 24 and can slide axially on the shaft 231, keeping the mounting sleeve 24 in a stable compressed state. After installation, the fastening cap 25 continues to apply preload to the mounting sleeve 24, keeping the deformation piece 243 continuously under pressure, improving the long-term locking effect and reducing the probability of loosening at the connection point.

[0036] Specifically, such as Figure 3 As shown, both ends of the mounting bracket 1 are provided with connecting angle irons 3 for fixing to another mounting bracket 1, and the bottom of the connecting angle iron 3 is provided with positioning holes for the base screw 21 to pass through and lock.

[0037] The connecting angle iron 3 is used to enable quick splicing between adjacent mounting brackets 1, allowing multiple mounting brackets 1 to form a continuous and stable mounting support structure. The positioning hole is used to mate with the base screw 21 for installation. After the base screw 21 is tightened, the connecting angle iron 3, mounting bracket 1, and connector 22 are fixed as a whole, improving the overall rigidity of the mounting bracket 1 and ensuring the connection accuracy between multiple mounting brackets 1.

[0038] Specifically, such as Figure 4 As shown, T-shaped grooves are provided on both the upper and lower sides of the mounting bracket 1 to limit the horizontal sliding of various types of bolts, and a clamp 4 for fixing the photovoltaic panel 5 is fixed in the upper T-shaped groove by mounting screws.

[0039] The upper T-shaped groove is mainly used for installing the photovoltaic panel 5 clamp 4, allowing the clamp 4 to be adjusted in position according to the size of the photovoltaic panel 5, thus improving installation flexibility. The lower T-shaped groove is mainly used for installing the foundation screw 21 and the connecting angle iron 3, allowing the fixing structure 2 to be freely adjusted in position along the length of the mounting frame 1. The T-shaped groove can reliably limit the bolts, prevent bolt rotation, improve installation efficiency, and is compatible with various sizes of mounting bolts, enhancing the versatility of the mounting frame 1.

[0040] Specifically, such as Figure 5 As shown, the deformable sheet 243 includes at least one of a wavy sheet or a straight sheet, and the wavy sheets and straight sheets are arranged alternately.

[0041] The corrugated plates possess significant axial elastic deformation capacity, preferentially expanding towards the upper and lower sides of the steel structure opening when compressed, forming a stable clamping force. The straight plates exhibit high radial support capacity, expanding inward towards the hole wall during compression, filling and squeezing the hole wall, thus increasing the contact area. When the corrugated and straight plates are arranged alternately, they form a complementary force state, undergoing oblique torsion together during continuous rotational compression, resulting in a spiral flexible locking structure for the entire mounting sleeve 24. This enhances the adaptability of the fixing structure 2 to different hole diameter errors, different steel plate thicknesses, and long-term vibration conditions.

[0042] Example 1: In use, two mounting frames 1 are laid on the steel structure. The photovoltaic panels 5 are fixed by the span of the two mounting frames 1 and the clamps 4. During the laying of the mounting frames 1, every two mounting frames 1 need to be connected by connecting angle irons 3. Two fixing structures 2 are installed on the connecting angle irons 3, and the connecting angle irons 3 are locked to the mounting frames 1 by the fixing structures 2. Finally, the fixing structures 2 are fixed to the steel structure to complete the fixing.

[0043] During the installation of fixed structure 2:

[0044] First, the threaded seat 242 of the mounting sleeve 24 is threaded onto the threaded portion 233 of the mounting nail 23. Then, the mounting nail 23 is positioned onto the pre-drilled steel structure beam. During adjustment, the base screw 21 slides in the sliding hole 222 on the deflector plate 221, allowing the base screw 21 to slide relative to the sliding hole 222 until the mounting nail 23 is successfully positioned. Then, the base screw 21 is tightened to lock the connector 22 and form a fastener between the connecting angle iron 3 and the mounting bracket 1. This structure can conveniently position the installation point within a certain range, facilitate high-altitude operations, reduce the hole-opening error requirements of construction personnel, and improve the ease of installation. Moreover, this position forms an axial clamping limit, which allows for a small amount of sliding in the horizontal direction to eliminate errors and stress relief after the installation of multiple photovoltaic panels 5.

[0045] Secondly, the torsion cap 241 of the mounting sleeve 24 is positioned above the steel structure using a wrench. Then, the mounting pin 23 is rotated. When the mounting pin 23 is rotated, the threaded seat 242 of the mounting sleeve 24 moves upward under the action of the thread, and squeezes the straight piece and the corrugated piece. The corrugated piece is squeezed into the metal plate on both sides under controlled and regular deformation during the compression, while the straight piece collapses irregularly, squeezes into the inner wall of the opening in the steel structure, and fits the mounting pin 23, forming a combination of the corrugated piece being clamped on the upper and lower sides, and the straight piece filling and clamping the opening in the steel structure.

[0046] Meanwhile, during continuous torsion, as the extrusion pressure increases, the friction between the threaded seat 242 and the threaded part 233 gradually increases, causing the torsional force to gradually act on the deformable piece 243, causing the straight or corrugated piece to twist and press against each other obliquely, forming a spiral multi-directional clamping state.

[0047] After the above installation is completed, tighten the fastening cap 25 and keep the fastening cap 25 locked to the mounting sleeve 24 with the cooperation of the mounting pin 23.

[0048] Example 2 differs from Example 1 in that, in addition to steel structures, this fixing structure is also suitable for installation on concrete walls, brick walls or other panels. In wall hole installation, the fastening cap 25 is removed and the installation sleeve 24 is directly inserted into the wall hole. The expansion deformation of the deformation piece 243 is completed in the threaded fit, and the double clamping and fixing of the outer side and the inner side of the installation nail 23 is completed.

[0049] Example 3 differs from Example 1 in that, in the installation of thicker plates, the deformable piece 243 is installed as a straight piece of the mounting sleeve 24, and the locking is achieved by squeezing the inner wall of the hole.

[0050] Example 4 differs from Example 1 in that, in the multi-layer gap steel structure, the deformation plate 243 is used as the mounting sleeve 24 for the full corrugated plate, so that during extrusion deformation, the multiple bending areas of the corrugated plate clamp and lock the multi-layer steel plate.

[0051] In summary, the innovation of this solution is not simply reflected in the use of expansion fixing, but in the integration of installation positioning compensation, flexible expansion locking, spiral anti-loosening, and thermal expansion and contraction stress release into the same fixing structure 2, making it more suitable for the application scenario of photovoltaic panels 5 being installed on steel structure roofs for a long time.

[0052] More specifically:

[0053] Existing factory roofs typically have large spans and numerous steel beams, inevitably leading to deviations in drilling positions. Furthermore, the mounting frame 1 is quite long, and the cumulative error increases as multiple mounting frames 1 are continuously spliced ​​together. Traditional fixing methods usually require highly accurate mounting hole positions; otherwise, re-drilling or enlarging the hole diameter is necessary, impacting construction efficiency. In this solution, the base screw 21 can slide along the mounting frame 1, the connector 22 can be further adjusted along the base screw 21, and the mounting nail 23 can be positioned on the deflector plate 221, giving the fixing structure 2 a large installation adjustment range. Construction personnel do not need to strictly ensure that the holes in the steel structure correspond perfectly to the mounting holes in the mounting frame 1; they only need to perform position compensation within the adjustment range for locking and fixing. This is particularly suitable for high-altitude construction environments on factory roofs, significantly reducing installation accuracy requirements, improving construction efficiency, and minimizing damage to the steel structure caused by repeated drilling.

[0054] Furthermore, existing steel structure installations commonly use ordinary bolts, expansion bolts, or riveting methods, with the fixing force mainly derived from local radial expansion or clamping force. Under prolonged exposure to wind loads, photovoltaic panel vibration, and diurnal temperature variations, the connection points are prone to gradual slight displacement, eventually leading to loosening. In contrast, the mounting sleeve 24 in this solution incorporates corrugated and straight plates. During installation, it undergoes not only axial compression but also oblique twisting during continuous rotation, resulting in a spiral distribution of the deformation plates 243. The corrugated plates clamp the upper and lower surfaces of the steel structure plate, while the straight plates expand radially into the hole walls. Multiple deformation plates 243 further interlock circumferentially, thus the fixing structure 2 simultaneously provides axial clamping, radial support, and circumferential anti-rotation capabilities. Compared to traditional unidirectional expansion fixing, this solution creates a three-dimensional flexible locking state. Even if local vibration causes release, locking force can continue to be provided in other directions, significantly improving connection stability.

[0055] Meanwhile, photovoltaic power stations are exposed to the outdoor environment for extended periods, and the steel structure, aluminum alloy mounting frame 1, and photovoltaic modules have different coefficients of linear expansion. The mounting frame 1 expands during the high temperatures of summer and contracts during the low temperatures of winter, repeating this cycle day and night. Traditional rigid connection structures endure repeated tension and compression over long periods, causing stress to continuously concentrate at the connection nodes, easily leading to bolt loosening, hole wall wear, and even steel structure fatigue. This solution, however, utilizes a horizontal sliding structure on the mounting frame 1 to release some of the thermal stress generated along its length. Furthermore, it leverages the flexible deformation capability of the deformation plate 243 itself. When temperature changes cause slight displacement, the deformation plate 243 maintains an elastic pre-tightened state, compensating for connection gaps and preventing a rapid decrease in locking force due to material contraction or expansion. Therefore, this structure can maintain a stable pre-tightened state over a long period, reducing fatigue damage to the connection nodes.

[0056] Furthermore, in actual engineering projects, the steel structure forms used in different factories vary considerably, including single-layer steel plates, box-type steel beams, sandwich steel structures, and steel plates of varying thicknesses. Ordinary fasteners typically require replacement with different specifications depending on the structure. This solution adapts to different installation environments by changing the form of the deformation plates 243 inside the mounting sleeve 24. When corrugated and straight plates are arranged alternately, both upper and lower clamping and inner wall filling can be achieved simultaneously, suitable for ordinary steel structure installations. Using all straight plates increases the hole wall compressive force, making it more suitable for thick steel plate installations. Using all corrugated plates allows multiple wave crests to clamp multiple layers of steel plates, improving the reliability of multi-layer steel structure connections. Therefore, only the mounting sleeve 24 needs to be replaced to meet various installation conditions without changing the overall fixing structure 2, thus improving product standardization.

[0057] Furthermore, photovoltaic power plants typically need to operate continuously for over twenty years. Maintenance at the rooftop installation location is difficult; if the connector 22 becomes loose, it can not only cause abnormal noises but also lead to repeated vibrations of the photovoltaic panel 5 in strong winds, potentially even causing the module to detach. This solution utilizes the deformation plate 243 to create a continuous pre-tightening force, and a spiral multi-directional flexible locking structure continuously adheres to the openings in the steel structure. During long-term vibration, this continuously compensates for connection gaps, maintaining a stable locking force that is not easily diminished by minor vibrations. Simultaneously, the mounting frame 1 retains appropriate displacement compensation capabilities, reducing the cumulative stress generated by the mutual constraint of multiple photovoltaic modules and decreasing the additional cyclic load on the roof steel structure. Therefore, this solution not only improves the reliability of the fixed node itself but also reduces the maintenance frequency caused by loose connections during long-term operation of the photovoltaic array, thereby improving the operational safety and service life of the entire photovoltaic support system.

[0058] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A photovoltaic panel (5) fixing device, comprising a mounting frame (1) for mounting the photovoltaic panel (5) on a steel structure, wherein the mounting frame (1) is installed to the steel structure via a fixing structure (2), characterized in that: The fixing structure (2) includes a base screw (21) that slides horizontally on the mounting bracket (1), and a connector (22) that slides on the base screw (21). A mounting pin (23) is rotatably mounted on the connector (22). A mounting sleeve (24) and a fastening cap (25) that pre-presses the mounting sleeve (24) are threaded onto the mounting pin (23). The mounting sleeve (24) has several deformation plates (243) in the middle. When the two wrenches fix one end of the mounting sleeve (24) and twist the mounting nail (23), the deformation plates (243) are squeezed and twisted obliquely, forming a spiral distribution of upper and lower clamping and inner expansion multi-directional flexible compression fixation.

2. The photovoltaic panel (5) fixing device according to claim 1, characterized in that, The connector (22) includes a deflector plate (221), on which a sliding hole (222) and a rotating hole (223) are provided. The sliding hole (222) is elongated, and the base screw (21) slides through the sliding hole (222). The mounting pin (23) rotates through the rotating hole (223).

3. The photovoltaic panel (5) fixing device according to claim 2, characterized in that, The mounting pin (23) includes a shaft (231) and a rotating part (234) fixed on the shaft (231). The bottom end of the shaft (231) is provided with a threaded part (233), and the top end of the shaft (231) is provided with a top head (232). The top head (232) is polygonal.

4. The photovoltaic panel (5) fixing device according to claim 3, characterized in that, The mounting sleeve (24) also includes a twist cap (241) and a threaded seat (242) located at both ends of a plurality of deformation plates (243) and fixedly connected to the plurality of deformation plates (243). The threaded seat (242) is threadedly engaged with the threaded portion (233), and the twist cap (241) is slidably disposed on the shaft (231).

5. The photovoltaic panel (5) fixing device according to claim 1, characterized in that, Both ends of the mounting bracket (1) are provided with connecting angle irons (3) for fixing to another mounting bracket (1), and the bottom of the connecting angle iron (3) is provided with positioning holes for the base screw (21) to pass through and lock.

6. The photovoltaic panel (5) fixing device according to claim 1, characterized in that, The mounting bracket (1) has T-shaped grooves on both the upper and lower sides for horizontal sliding limit of various types of bolts, and the upper T-shaped groove is fixed with a clamp (4) for fixing the photovoltaic panel (5) by mounting screws.

7. The photovoltaic panel (5) fixing device according to claim 1, characterized in that, The deformable sheet (243) includes one or more of wavy sheets or straight sheets, and when there are multiple types, the wavy sheets and straight sheets are arranged alternately.

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