Photovoltaic back sheet and support fixing structure

Abstract

This invention discloses a photovoltaic backsheet and bracket fixing structure, relating to the field of photovoltaic panel fixing technology, including a fixing frame and a fixing unit: The fixing frame has an internal placement groove, and rod grooves are provided on both the left and right sides of the top surface of the fixing frame. A locking unit is provided on the bottom surface of the fixing frame. The fixing unit includes a main throttle, a main screw, a fixing frame, a frame, an adjusting rod, a fixing seat, a clamp, a sliding plate, and an adjusting plate. There are two main screws, each threaded into the screw holes on the front and rear sides of the fixing frame. This photovoltaic backsheet and bracket fixing structure, through its multi-directionally adjustable fixing unit, can quickly and accurately adapt to photovoltaic backsheets and brackets of different specifications, achieving stable clamping. The multi-dimensional locking method, combining lateral clamping and vertical compression, along with the interconnected fixing structure, greatly enhances wind resistance and safety. Simultaneously, the flexible protective structure effectively prevents damage to the backsheet during installation and operation.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel fixing, and in particular to a photovoltaic backsheet and bracket fixing structure. Background Technology

[0002] The backsheet is the core encapsulation material of a photovoltaic (PV) module, located on the back of the solar cells, and is a type of solar cell component. It primarily employs a multi-layered composite structure, including a fluorinated weather-resistant layer, a PET support layer, and an adhesive layer. Common materials include polyester film (PET), PVF / PVDF fluorinated film, etc. The TPT structure (PVF film + PET film) can guarantee a module's 25-year lifespan. Backsheets must possess properties such as moisture barrier, insulation, and resistance to high temperatures and humidity. Based on manufacturing processes, they are classified as composite or coated types; based on fluorine content, they are classified as double-sided fluorinated, single-sided fluorinated, and fluorine-free backsheets. Transparent backsheets, due to their lightweight (1 / 10 the weight of glass backsheets) and high light transmittance, are suitable for bifacial modules. With the widespread application of solar photovoltaic (PV) power generation technology, the installation and fixing technology of PV modules has become particularly important. The PV backsheet is a crucial component of PV modules, and its fixing structure with the support structure directly affects the stability, safety, and power generation efficiency of the entire PV system.

[0003] Due to the wide variety of photovoltaic backsheets and brackets of different models and sizes, traditional fixing structures often need to be customized for specific specifications, lacking adaptability. Furthermore, under the action of external forces such as strong winds and vibrations, simple clamping methods are prone to loosening, causing photovoltaic modules to shift or even fall off. In addition, fixing structures are mostly set up individually, which lacks mutual connection, resulting in limited fixing effect and thus posing safety hazards. Therefore, a photovoltaic backsheet and bracket fixing structure is proposed. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the existing defects and provide a photovoltaic backsheet and bracket fixing structure. Through a multi-directionally adjustable fixing unit, it can quickly and accurately adapt to photovoltaic backsheets and brackets of different specifications to achieve stable clamping. The multi-dimensional locking method combining lateral clamping and vertical compression, along with the interconnected fixing structure, greatly enhances wind resistance and safety. At the same time, the flexible protective structure can effectively avoid damage to the backsheet during installation and operation, thus effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic backsheet and support fixing structure, comprising a fixing frame and a fixing unit:

[0006] Fixed frame: The inside is provided with a placement slot, the left and right sides of the top surface of the fixed frame are provided with rod slots, and the bottom surface of the fixed frame is provided with a locking unit;

[0007] Fixed unit: includes a main throttle, main screw, fixed frame, frame, adjusting rod, fixed seat, clamp, slide plate and adjusting plate. There are two main screws, which are threadedly installed into the screw holes on the front and rear sides of the fixed frame respectively. The inner ends of the two main screws are fixed with main throttles. The main throttles are located inside the placement slot. The outer ends of the main screws are rotatably installed with the middle of the inner side of the fixed frame. The frame is set on the bottom surface of the fixed frame. The adjusting rod is slidably installed inside the frame. The outer end of the adjusting rod is fixed with a fixed seat. The bottom end of the adjusting plate is slidably installed in the groove inside the fixed seat. The top surface of the adjusting plate has a groove. The bottom surface of the clamp is fixed with a slide plate. The slide plate is slidably inserted into the groove on the top surface of the adjusting plate.

[0008] It also includes four limiting rods, which are fixed in pairs to the inner sides of two fixed frames. The limiting rods are slidably installed with the rod grooves.

[0009] Rotating the main throttle causes the main screw to rotate, which in turn clamps the fixing frame onto the inside of the photovoltaic bracket to install the fixing frame. The sliding adjustment rod, in conjunction with the adjustment plate, adjusts the position of the clamp, thereby laterally clamping and fixing the photovoltaic backsheet to facilitate the fixation of the photovoltaic backsheet and the bracket.

[0010] Furthermore, the fixing unit also includes a connecting plate, a screw, a threaded cylinder, a secondary throttle, and a secondary lead screw. The connecting plate is fixed to the top of the outer side of the clamp. The screw is rotatably installed in the shaft hole in the middle of the connecting plate. The threaded cylinder is fixed to the outer side of the adjusting plate. The screw and the threaded cylinder are threadedly installed in the middle. The secondary lead screw is rotatably installed in the sliding groove on the surface of the fixing seat. The secondary lead screw is threadedly connected to the screw hole on the surface of the adjusting plate. A secondary throttle is installed on the inner end of the secondary lead screw. Rotating the secondary throttle causes the secondary lead screw to rotate to make a small adjustment to the position of the clamp. It also works with the screw and the threaded cylinder to adjust the height of the clamp, thereby laterally clamping and fixing the photovoltaic backsheet.

[0011] Furthermore, the fixing unit also includes a limiting groove, a spring, a locking frame, and a limiting strip. The spring is fixed in the groove on the bottom surface of the adjusting rod, and the bottom end of the spring is connected to the inside of the locking frame. Limiting strips are provided on both sides inside the locking frame. The limiting groove is evenly opened on the surface of the frame. The limiting strip slides into the limiting groove. When the spring contracts, the locking frame is locked on the outside of the frame, so that the limiting strip is locked into the limiting groove to lock the position of the adjusting rod.

[0012] Furthermore, the fixing unit also includes a main hook and loop fastener, hook and loop inserts, and a protective pad. The main hook and loop fasteners are arranged in pairs in the grooves on the inner side of the clamp. Hook and loop inserts are fixed at both ends of the outer side of the protective pad. The hook and loop inserts are bonded to the main hook and loop fasteners. The bonding between the main hook and loop fasteners installs the protective pad. This avoids direct contact between metal parts and the photovoltaic backsheet, preventing scratches and indentations, while increasing friction to enhance the fixing effect.

[0013] Furthermore, the fixing unit also includes a fixing column, a mounting plate, and a mounting groove. The mounting groove is formed on the surface of the fixing frame, and the mounting plate is inserted into the inside of the mounting groove. The fixing column is installed on the outer side of the mounting plate. The mounting plate is inserted into the inside of the mounting groove to fix the fixing column into the column hole on the surface of the photovoltaic bracket while fixing the fixing frame. This can increase the firmness of the installation between the fixing frame and the photovoltaic bracket.

[0014] Furthermore, the locking unit includes a pressure plate, secondary Velcro nut, support plate, rope hole, steel wire rope, and rope seat. The rope seat is fixed to the middle of the bottom surface of the fixing frame, and a steel wire rope is inserted into the through hole on the surface of the rope seat. A support plate is provided in the middle of the bottom surface of the pressure plate, and rope holes are evenly opened on the surface of the support plate. The rope holes and steel wire ropes pass through the corresponding holes. Secondary Velcro nut are provided in the grooves on both sides of the bottom surface of the pressure plate. The secondary Velcro nut can also be used to bond the protective pad. The steel wire rope passes through the rope seat and connects to the rope hole. This can provide a vertical downward clamping force to the pressure plate, thereby greatly enhancing the firmness of the fixation between the photovoltaic backsheet and the photovoltaic bracket, and improving the resistance to wind and displacement.

[0015] Furthermore, the locking unit also includes a fixing rod, a rod seat, and a baffle. There are two rod seats, each disposed on the top surface of a corresponding clamp. The through hole on the surface of the rod seat is inserted into the fixing rod. A baffle that fits against the surface of the rod seat is rotatably mounted on the top surface of the rod seat. The fixing rod is inserted into the interior of the rod seat, and the baffle is rotated to limit the fixing rod. This allows multiple clamps to be connected to each other to increase the stability of the fixation.

[0016] Furthermore, the locking unit also includes a pressure frame, a locking frame, and a nut. A steel wire rope is placed inside the locking frame. The two ends of the pressure frame are slidably installed with two through holes on the surface of the locking frame, respectively. The outer thread of the end of the pressure frame is threaded with the nut. Rotating the nut will fix the steel wire rope inside the locking frame by the pressure frame, thereby improving the stability of the anchor point.

[0017] Furthermore, it also includes a main anti-slip pad and a secondary anti-slip pad. The main anti-slip pad is fixed to the left end of the outer side of the fixing frame, and the secondary anti-slip pad is fixed to the right end of the outer side of the fixing frame. Both the main anti-slip pad and the secondary anti-slip pad are polyvinyl chloride pads. The main anti-slip pad and the secondary anti-slip pad can play a role in buffering and increasing friction when the fixing frame comes into contact with the photovoltaic support.

[0018] Furthermore, it also includes a sponge pad, which is adhered to the top surface of the fixing frame. The surface of the sponge pad is coated with silicone strips. The sponge pad can protect the photovoltaic backsheet, and the silicone strips on its surface can provide a certain degree of anti-slip effect.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: This photovoltaic backsheet and support fixing structure has the following advantages:

[0020] 1. By rotating the main throttle to drive the main screw to rotate, the fixing frame is clamped into the inner side of the photovoltaic bracket to install the fixing frame. By rotating the secondary throttle to drive the secondary screw to rotate, the position of the clamp is slightly adjusted. The height of the clamp is adjusted by using the screw and threaded cylinder to install the screw, thereby laterally clamping and fixing the photovoltaic backsheet to facilitate the fixing of the photovoltaic backsheet and the bracket.

[0021] 2. The protective pad is installed by bonding the main hook and loop fasteners together. The secondary hook and loop fasteners can also be used to bond the protective pad. This avoids direct contact between metal parts and the photovoltaic backsheet, preventing scratches and dents, while increasing friction to enhance the fixing effect.

[0022] 3. By passing a steel wire rope through the rope seat and connecting it to the rope hole, a vertical downward clamping force can be provided to the pressure plate, which greatly enhances the firmness of the fixation between the photovoltaic backsheet and the photovoltaic bracket, thereby improving the resistance to wind and displacement. The fixing rod is inserted into the inside of the rod seat, and the baffle is rotated to limit the fixing rod. This allows multiple clamps to be connected to each other to increase the stability of the fixation.

[0023] 4. By inserting the mounting plate into the mounting groove, the fixing column is fixed to the fixing frame and inserted into the column hole on the surface of the photovoltaic bracket. This increases the stability of the installation between the fixing frame and the photovoltaic bracket. The main anti-slip pad and the secondary anti-slip pad can buffer and increase friction when the fixing frame and the photovoltaic bracket come into contact. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the invention.

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the invention's fixed frame.

[0026] Figure 3This is a schematic diagram of the bottom structure of the fixed frame of the invention.

[0027] Figure 4 It is an invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0028] Figure 5 It is an invention Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0029] Figure 6 It is an invention Figure 1 A magnified schematic diagram of the structure at point C.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Fixed frame; 2. Fixed unit; 21. Main throttle; 22. Main lead screw; 23. Fixed bracket; 24. Frame; 25. Adjusting rod; 26. Fixed seat; 27. Clamp; 28. Slide plate; 29. ​​Adjusting plate; 210. Connecting plate; 211. Screw; 212. Threaded cylinder; 213. Secondary throttle; 214. Secondary lead screw; 215. Limiting groove; 216. Spring; 217. Locking bracket; 218. Limiting strip; 219. Main Velcro nut; 220. Velcro nut 221. Protective pad; 222. Fixing post; 223. Mounting plate; 224. Mounting groove; 3. Locking unit; 31. Pressure plate; 32. Secondary Velcro nut; 33. Support plate; 34. Rope hole; 35. Steel wire rope; 36. Rope seat; 37. Fixing rod; 38. Rod seat; 39. Baffle; 310. Pressure frame; 311. Locking frame; 312. Nut; 4. Placement groove; 5. Limiting rod; 6. Rod groove; 7. Main anti-slip pad; 8. Secondary anti-slip pad; 9. Sponge pad. Detailed Implementation

[0032] 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.

[0033] Please see Figure 1-6 This embodiment provides a technical solution: a photovoltaic backsheet and support fixing structure, including a fixing frame 1 and a fixing unit 2.

[0034] Fixed frame 1: An internal placement groove 4 is provided. Rod grooves 6 are provided on both the left and right sides of the top surface of fixed frame 1. A locking unit 3 is provided on the bottom surface of fixed frame 1. The locking unit 3 includes a pressure plate 31, a secondary Velcro nut 32, a support plate 33, a rope hole 34, a steel wire rope 35, and a rope seat 36. The rope seat 36 is fixed to the center of the bottom surface of fixed frame 1. A steel wire rope 35 is inserted into the through hole on the surface of the rope seat 36. A support plate 33 is provided in the center of the bottom surface of pressure plate 31. The surface of the pressure plate 31 is evenly provided with rope holes 34, through which steel wire ropes 35 pass. Secondary Velcro fasteners 32 are provided in the grooves on both sides of the bottom surface of the pressure plate 31. These secondary Velcro fasteners 32 can also be used to bond the protective pad 221. The steel wire rope 35 passes through the rope seat 36 and connects to the rope holes 34. This provides a vertically downward clamping force to the pressure plate 31, greatly enhancing the stability of the fixation between the photovoltaic backsheet and the photovoltaic support, thereby improving wind resistance and displacement resistance. The locking unit 3 also includes a fixing rod 37, a rod seat 38, and a baffle 39. There are two rod seats 38, which are respectively set on the top surfaces of the two corresponding clamps 27. The through holes on the surface of the rod seat 38 are inserted into the fixing rod 37. The baffle 39, which is in contact with the surface of the rod seat 38, is rotatably installed on the top surface of the rod seat 38. The fixing rod 37 is inserted into the inside of the rod seat 38, and the baffle 39 is rotated to limit the fixing rod 37. In this way, multiple clamps 27 can be connected to each other to increase the stability of the fixation. The locking unit 3 also includes a pressure frame 310, a locking frame 311, and a nut 312. The locking frame 311 contains a steel wire rope 35. The two ends of the pressure frame 310 are slidably installed with the two through holes on the surface of the locking frame 311. The outer thread of the end of the pressure frame 310 is threaded to the nut 312. Rotating the nut 312 fixes the steel wire rope 35 inside the locking frame 311 by the pressure frame 310, thereby improving the firmness of the anchor point.

[0035] Fixed Unit 2: Includes a main throttle 21, a main screw 22, a fixed frame 23, a frame 24, an adjusting rod 25, a fixed seat 26, a clamp 27, a slide plate 28, and an adjusting plate 29. There are two main screws 22, each threadedly installed into the screw holes on the front and rear sides of the fixed frame 1. The inner ends of both main screws 22 are fixed with a main throttle 21, which is located inside the placement slot 4. The outer ends of the main screws 22 are rotatably installed with the middle of the inner side of the fixed frame 23. The frame 24 is located on the bottom surface of the fixed frame 1. An adjusting rod 25 is slidably installed inside the frame 24. A fixed seat 26 is fixed to the outer end of the adjusting rod 25. The sliding groove inside the fixed seat 26 is slidably installed with the bottom end of the adjusting plate 29. A sliding groove is formed on the top surface of the adjusting plate 29. The bottom of the clamp 27... A sliding plate 28 is fixed to the top surface of the clamp 27. The sliding plate 28 is slidably inserted into a groove on the top surface of the adjusting plate 29. The fixing unit 2 also includes a connecting plate 210, a screw 211, a threaded cylinder 212, a secondary rotary handle 213, and a secondary lead screw 214. The connecting plate 210 is fixed to the top of the outer side of the clamp 27. The screw 211 is rotatably installed in the shaft hole in the middle of the connecting plate 210. The threaded cylinder 212 is fixed to the outer side of the adjusting plate 29. The screw 211 is threadedly installed in the middle of the threaded cylinder 212. The secondary lead screw 214 is rotatably installed in the groove on the surface of the fixing seat 26. The secondary lead screw 214 is threadedly connected to the screw hole on the surface of the adjusting plate 29. The secondary rotary handle 213 is installed on the inner end of the secondary lead screw 214. Rotating the secondary rotary handle 213 drives the secondary lead screw 214 to rotate to adjust the clamp 27. The position is slightly adjusted, and the height of the clamp 27 is adjusted by screw 211 and threaded cylinder 212 to laterally clamp and fix the photovoltaic backsheet. The fixing unit 2 also includes a limiting groove 215, a spring 216, a locking frame 217, and a limiting strip 218. The spring 216 is fixed in the groove on the bottom surface of the adjusting rod 25. The bottom end of the spring 216 is connected to the inside of the locking frame 217. Limiting strips 218 are provided on both sides inside the locking frame 217. The limiting grooves 215 are evenly opened on the surface of the frame 24. The limiting strips 218 slide into the limiting grooves 215. When the spring 216 retracts, the locking frame 217 is locked on the outside of the frame 24, and the limiting strips 218 are locked into the limiting grooves 215 to lock the position of the adjusting rod 25. The fixing unit 2 also includes a main Velcro 219, Velcro 220s, and a protective pad 221. The main Velcro 219s are arranged in pairs within the grooves on the inner side of the clamp 27. Velcro 220s are fixed to both ends of the outer side of the protective pad 221, and the Velcro 220s are correspondingly bonded to the main Velcro 219s. The bonding between the main Velcro 219s and the Velcro 220s secures the protective pad 221, thus preventing direct contact between metal components and the photovoltaic backsheet, preventing scratches and indentations, and increasing friction to enhance the fixing effect. The fixing unit 2 also includes a fixing post 222, a mounting plate 223, and a mounting groove 224. The mounting groove 224 is formed on the surface of the fixing frame 23, and the mounting plate 223 is inserted into the interior of the mounting groove 224.A fixing post 222 is installed on the outer side of the mounting plate 223. The mounting plate 223 is inserted into the mounting groove 224 to fix the fixing post 222 in place while simultaneously inserting it into the post hole on the surface of the photovoltaic bracket. This increases the stability of the installation between the fixing frame 23 and the photovoltaic bracket.

[0036] This includes four limiting rods 5, which are fixed in pairs to the inner sides of two fixing frames 23. The limiting rods 5 are slidably installed with the rod grooves 6. Rotating the main handle 21 drives the main screw 22 to rotate, thereby clamping the fixing frame 23 into the inner side of the photovoltaic bracket to install the fixing frame 1. The sliding adjusting rod 25, in conjunction with the adjusting plate 29, adjusts the position of the clamp 27, thereby laterally clamping and fixing the photovoltaic backsheet to facilitate the fixing of the photovoltaic backsheet and the bracket. It also includes a main anti-slip pad 7 and a secondary anti-slip pad 8. The main anti-slip pad 7 is fixed... The main anti-slip pad 7 and the secondary anti-slip pad 8 are fixed to the left end of the outer side of the fixing frame 23, and the secondary anti-slip pad 8 are fixed to the right end of the outer side of the fixing frame 23. Both the main anti-slip pad 7 and the secondary anti-slip pad 8 are polyvinyl chloride pads. The main anti-slip pad 7 and the secondary anti-slip pad 8 can buffer and increase friction when the fixing frame 23 contacts the photovoltaic bracket. It also includes a sponge pad 9, which is adhered to the top surface of the fixing frame 1. The surface of the sponge pad 9 is coated with silicone strips. The sponge pad 9 can protect the photovoltaic backsheet, and the silicone strips on its surface can play a certain anti-slip role.

[0037] The working principle of the photovoltaic backsheet and bracket fixing structure provided by this invention is as follows: First, the fixing frame 1 is placed inside the photovoltaic bracket. Rotating the main throttle 21 drives the main screw 22 to rotate, thereby securing the fixing frame 23 inside the photovoltaic bracket to install the fixing frame 1. The main anti-slip pad 7 and secondary anti-slip pad 8 provide cushioning and increase friction when the fixing frame 23 contacts the photovoltaic bracket. The fixing post 222 inside the mounting groove 224 is inserted into the post hole on the surface of the photovoltaic bracket, thus increasing the friction between the fixing frame 23 and the photovoltaic bracket. The bracket is installed securely. The photovoltaic backsheet is then placed on top of the fixed frame 1. The sponge pad 9 protects the photovoltaic backsheet, and its silicone strip provides some anti-slip properties. The adjusting rod 25 slides inside the frame 24. The spring 216 retracts, locking the locking bracket 217 onto the outside of the frame 24, causing the limiting strip 218 to engage with the limiting groove 215 to lock the position of the adjusting rod 25. The secondary handle 213 is then rotated, causing the secondary lead screw 214 to rotate slightly, adjusting the position of the clamp 27. The height of the clamp 27 is adjusted by screwing the screw 211 and threaded cylinder 212 together, thereby laterally clamping and fixing the photovoltaic backsheet. The main hook and loop fastener 219 and the auxiliary hook and loop fastener 32 are respectively bonded to the hook and loop fastener 220 to install the protective pad 221. This avoids direct contact between metal parts and the photovoltaic backsheet, preventing scratches and indentations, while increasing friction to enhance the fixing effect. Then, the support plate 33 on the bottom of the pressure plate 31 is inserted into the connection position of the photovoltaic backsheet, and the steel wire rope 35 passes through the rope seat 36 and... Connected to the rope hole 34, the nut 312 is rotated to fix the wire rope 35 inside the locking frame 311, thereby improving the anchoring point and providing a vertical downward clamping force to the pressure plate 31. This greatly enhances the fixation between the photovoltaic backsheet and the photovoltaic bracket, improving wind resistance and displacement resistance. Finally, the fixing rod 37 is inserted into the rod seat 38, and the baffle 39 is rotated to limit the fixing rod 37. This allows multiple clamps 27 to be connected to each other to increase the stability of the fixation.

[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A photovoltaic backsheet and support fixing structure, comprising a fixing frame (1) and a fixing unit (2), characterized in that: Fixed frame (1): The inside is provided with a placement groove (4), and the left and right sides of the top surface of the fixed frame (1) are provided with rod grooves (6), and the bottom surface of the fixed frame (1) is provided with a locking unit (3). Fixed unit (2): includes main throttle (21), main screw (22), fixed frame (23), frame (24), adjusting rod (25), fixed seat (26), clamp (27), slide plate (28) and adjusting plate (29). There are two main screws (22), which are threaded to the screw holes on the front and rear sides of the fixed frame (1). The inner ends of the two main screws (22) are fixed with main throttle (21). The main throttle (21) is located inside the placement slot (4). The outer ends of the main screws (22) are connected to the fixed frame (24). 3) The frame (24) is mounted on the bottom surface of the fixed frame (1) and the adjusting rod (25) is slidably mounted inside the frame (24). The outer end of the adjusting rod (25) is fixed with a fixed seat (26). The sliding groove inside the fixed seat (26) is slidably mounted with the bottom end of the adjusting plate (29). The top surface of the adjusting plate (29) is provided with a sliding groove. The bottom surface of the clamp (27) is fixed with a sliding plate (28). The sliding plate (28) is slidably inserted into the sliding groove on the top surface of the adjusting plate (29). It also includes a limiting rod (5), which has four rods and is fixed in pairs to the inner side of two fixing frames (23). The limiting rod (5) is slidably installed with the rod groove (6).

2. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: The fixing unit (2) also includes a connecting plate (210), a screw (211), a threaded cylinder (212), a secondary throttle (213), and a secondary lead screw (214). The connecting plate (210) is fixed to the top of the outer side of the clamp (27). The screw (211) is rotatably installed in the shaft hole in the middle of the connecting plate (210). The threaded cylinder (212) is fixed to the outer side of the adjusting plate (29). The screw (211) is threadedly installed in the middle of the threaded cylinder (212). The secondary lead screw (214) is rotatably installed in the groove on the surface of the fixing seat (26). The secondary lead screw (214) is threadedly connected to the screw hole on the surface of the adjusting plate (29). The secondary throttle (213) is installed on the inner end of the secondary lead screw (214).

3. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: The fixing unit (2) also includes a limiting groove (215), a spring (216), a locking frame (217), and a limiting strip (218). The spring (216) is fixed in the groove on the bottom surface of the adjusting rod (25). The bottom end of the spring (216) is connected to the inside of the locking frame (217). Limiting strips (218) are provided on both sides inside the locking frame (217). The limiting groove (215) is evenly opened on the surface of the frame (24). The limiting strip (218) is slidably inserted into the limiting groove (215).

4. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: The fixing unit (2) also includes a main Velcro sticker (219), a Velcro sticker (220), and a protective pad (221). The main Velcro stickers (219) are arranged in pairs in the grooves on the inner side of the clamp (27). The two ends of the outer side of the protective pad (221) are fixed with Velcro stickers (220), and the Velcro stickers (220) are bonded to the main Velcro stickers (219).

5. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: The fixing unit (2) further includes a fixing post (222), a mounting plate (223) and a mounting groove (224). The mounting groove (224) is opened on the surface of the fixing frame (23). The mounting plate (223) is inserted into the inside of the mounting groove (224). The fixing post (222) is installed on the outer side of the mounting plate (223).

6. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: The locking unit (3) includes a pressure plate (31), a secondary Velcro nut (32), a support plate (33), a rope hole (34), a steel wire rope (35), and a rope seat (36). The rope seat (36) is fixed in the middle of the bottom surface of the fixing frame (1). A steel wire rope (35) is inserted into the through hole on the surface of the rope seat (36). A support plate (33) is provided in the middle of the bottom surface of the pressure plate (31). The surface of the support plate (33) is evenly provided with rope holes (34). The rope holes (34) are correspondingly connected to the steel wire rope (35). A secondary Velcro nut (32) is provided in the grooves on both sides of the bottom surface of the pressure plate (31).

7. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: The locking unit (3) further includes a fixing rod (37), a rod seat (38), and a baffle (39). There are two rod seats (38) respectively set on the top surface of the two corresponding clamps (27). The through hole on the surface of the rod seat (38) is inserted and installed with the fixing rod (37). The top surface of the rod seat (38) is rotatably mounted with a baffle (39) that fits against the surface of the rod seat (38).

8. The photovoltaic backsheet and support fixing structure according to claim 6, characterized in that: The locking unit (3) also includes a pressure frame (310), a locking frame (311) and a nut (312). A steel wire rope (35) is placed inside the locking frame (311). The two ends of the pressure frame (310) are slidably installed with two through holes on the surface of the locking frame (311). The outer thread of the end of the pressure frame (310) is threaded with the nut (312).

9. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: It also includes a main anti-slip pad (7) and a secondary anti-slip pad (8). The main anti-slip pad (7) is fixed to the left end of the outer side of the fixing frame (23), and the secondary anti-slip pad (8) is fixed to the right end of the outer side of the fixing frame (23). Both the main anti-slip pad (7) and the secondary anti-slip pad (8) are polyvinyl chloride pads.

10. The photovoltaic backsheet and support fixing structure according to claim 1, characterized in that: It also includes a sponge pad (9), which is adhered to the top surface of the fixing frame (1), and the surface of the sponge pad (9) is coated with a silicone strip.

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