Roof distributed photovoltaic sprinkling press block windproof fixing device

Abstract

The application relates to the technical field of photovoltaic module installation, and discloses a roof distributed photovoltaic spraying and pressing block windproof fixing device, which comprises a supporting frame, a mounting plate, a photovoltaic panel, a middle fixing module and an edge fixing module; the middle fixing module comprises a middle fixing block, a first connecting piece, a second connecting piece, a first sliding groove, a first pressing block, a first elastic piece and a first spraying assembly; the first pressing block is elastically pressed against the photovoltaic panel under the action of the first elastic piece; and the first spraying assembly is used for spraying and cleaning the surface of the photovoltaic panel. The windproof pressing structure and the spraying and cleaning structure are integrally arranged, the fixing stability of the photovoltaic panel under a strong wind working condition is improved, and the panel surface cleaning and maintenance are considered.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module installation technology, specifically to a windproof fixing device for rooftop distributed photovoltaic sprinkler blocks. Background Technology

[0002] In recent years, rooftop distributed photovoltaic (PV) power generation has been widely used in coastal provinces such as Hainan and Guangdong, as well as industrial cities in the east. However, PV power plants in these regions generally face two major challenges: Hainan and Guangdong are typhoon-prone areas. When a typhoon passes through, the instantaneous wind force is extremely strong, which can cause powerful lifting, shearing, and vibration damage to photovoltaic arrays. Traditional rigid connection fixing methods are prone to stress concentration at the fixing points when facing such periodic and high-intensity wind loads, resulting in loose bolts, deformation of the bracket, and even the photovoltaic panels being blown off the entire unit, causing serious safety accidents and property damage. In Yangjiang or industrial areas with numerous metal processing and chemical enterprises, the surface of photovoltaic panels is highly susceptible to complex contamination. Metal dust, oil stains, and other industrial emissions from metal processing enterprises adhere to the surface of the photovoltaic panels, forming a layer of dirt that is difficult to be washed away by rainwater. These stains significantly block sunlight, leading to a substantial decrease in the power generation efficiency of the photovoltaic panels. Therefore, the wind resistance and surface cleanliness of photovoltaic power plants are important factors affecting their long-term safe and stable operation. However, the mainstream fixing method for photovoltaic power plants in the current technology mostly uses bolts to directly and rigidly connect the clamps or brackets to the photovoltaic panels and guide rails. This method still has the following technical defects: Photovoltaic panels expand and contract with temperature differences between day and night, and tend to vibrate and rise in strong winds. Rigid connections cannot adapt to this deformation, which will generate continuous static and alternating stress at the connection points. Under long-term action, this can easily lead to failure of bolt preload, loosening of connections, and even fatigue damage to photovoltaic panels or installation structures. The risk of failure increases dramatically in extreme weather such as typhoons. In existing solutions, the windproof fixing system and the panel cleaning system are usually completely separate. The independent cleaning system itself also requires maintenance (such as pipe and nozzle blockage), which increases the long-term operation and maintenance burden and cost. Manual cleaning has problems such as low efficiency, poor safety and large water consumption. In view of this, the present invention proposes a windproof fixing device for rooftop distributed photovoltaic spraying blocks. Summary of the Invention

[0003] This invention proposes a windproof fixing device for rooftop distributed photovoltaic spray blocks, which solves the problems of photovoltaic panel fixing methods in the prior art being prone to failure under strong wind conditions, and the complex installation and maintenance caused by the separate setting of the windproof fixing system and the panel cleaning system.

[0004] The present invention provides a windproof fixing device for rooftop distributed photovoltaic spraying blocks, including a support frame, two parallel mounting plates fixedly connected to the top of the support frame, a plurality of photovoltaic panels equally distributed between the two mounting plates, a plurality of middle fixing modules in the middle of the mounting plates, and edge fixing modules at both ends of the mounting plates. The middle fixing module includes a middle fixing block. A first connector is provided in the middle of the middle fixing block, and a second connector is provided at both ends of the bottom. A first sliding groove is vertically opened at both ends. A first pressing block that abuts against the top surface of the photovoltaic panel is slidably connected to the inner side of the two first sliding grooves. A first elastic element is connected between the two first pressing blocks and the top wall of the first sliding groove. A first spraying component is provided on the top of the first pressing block. The mounting plate has a mounting groove along its length, the second connector includes a second bolt that passes through the mounting groove, and the bottom wall of the photovoltaic panel has a threaded hole that engages with the second bolt. A water supply pipe is fixedly connected to the inner side of the support frame, and a water pump is connected to the inlet end of the water supply pipe.

[0005] Preferably, in the aforementioned rooftop distributed photovoltaic spraying block windproof fixing device, the edge fixing module includes a side fixing block. The bottom of the side fixing block is provided with a third connector for fixing to the photovoltaic panel. A second sliding groove is vertically formed at the top of the side fixing block. A second pressing block is slidably connected to the inner side of the second sliding groove. A second elastic member is connected between the second pressing block and the top wall of the second sliding groove. A second spraying assembly is provided at the top of the second pressing block. The edge fixing module is connected and fixed to the photovoltaic panel via the third connector, and the photovoltaic panel located at the edge of the array is elastically pressed and fixed by the sliding of the second pressing block along the second sliding groove and the elastic pressing of the second elastic member.

[0006] Preferably, in the aforementioned rooftop distributed photovoltaic spray block windproof fixing device, the third connector adopts the same connection structure as the second connector, and is threaded through the mounting plate by bolts and engaged with the screw holes on the bottom wall of the photovoltaic panel; the second elastic member adopts the same elastic pressing structure as the first elastic member; and the second spray assembly adopts the same spray adjustment structure as the first spray assembly.

[0007] Preferably, in the windproof fixing device for rooftop distributed photovoltaic spraying blocks, the first elastic element includes a sliding rod penetrating the top wall of the first sliding groove. The bottom end of the sliding rod is fixedly connected to the first pressure block, and a pull block is fixedly connected to the top of the sliding rod. A compression spring is sleeved on the sliding rod. One end of the compression spring abuts against the top wall of the first sliding groove, and the other end of the compression spring abuts against the first pressure block, so that the first pressure block can slide vertically along the first sliding groove and continuously apply elastic pressing force to the top surface of the photovoltaic panel.

[0008] Preferably, in the aforementioned rooftop distributed photovoltaic spray block windproof fixing device, the first connecting member includes a first bolt penetrating the mounting plate, a nut being threaded onto the top of the first bolt, and a first washer and a second washer arranged in parallel on the first bolt. The first washer is located between the first bolt and the mounting plate, and the second washer is located between the intermediate fixing block and the nut, so as to lock and fix the intermediate fixing block to the mounting plate.

[0009] Preferably, in the rooftop distributed photovoltaic spray block windproof fixing device, the second connector includes a second bolt that penetrates the mounting plate. The top of the second bolt is threaded into a screw hole on the bottom wall of the photovoltaic panel. A third washer and a fourth washer are fitted on the second bolt in parallel. The third washer is located between the second bolt and the mounting plate, and the fourth washer is located between the photovoltaic panel and the intermediate fixing block, so as to connect and fix the photovoltaic panel and the intermediate fixing block through the second connector.

[0010] Preferably, in the rooftop distributed photovoltaic spray block windproof fixing device, the mounting plate has an installation groove along its length, and the second bolt and the first bolt are both clearance-fitted with the installation groove so that the intermediate fixing block and the photovoltaic panel can be adjusted in installation position along the length of the installation groove.

[0011] Preferably, in the aforementioned windproof fixing device for rooftop distributed photovoltaic spray blocks, the screw holes on the bottom wall of the photovoltaic panel are positioned corresponding to the mounting grooves on the mounting plate, so that the second bolt, after being adjusted along the mounting groove, engages with the corresponding screw hole thread.

[0012] Preferably, in the aforementioned rooftop distributed photovoltaic sprinkler block windproof fixing device, the first sprinkler assembly includes a water collection base fixedly connected to the top of the first block, a water guide hose fixedly connected to one end of the water collection base, the inlet end of the water guide hose being connected to a water supply pipe, a hollow tube communicating with the interior of the water collection base being rotatably connected to the top of the water collection base, a spray seat fixedly connected to the top of the hollow tube, a nozzle fixedly connected to the outlet end of the spray seat, and an adjusting component for driving the hollow tube to rotate on the water collection base.

[0013] Preferably, in the aforementioned rooftop distributed photovoltaic sprinkler block windproof fixing device, the adjusting component includes a protective box fixedly connected to the top of the water collection seat, a worm gear rotatably connected to the inner side of the protective box, a rotating cap fixedly connected to one end of the worm gear, and a worm wheel fixedly connected to the outer side of the hollow tube, the worm wheel meshing with the worm gear.

[0014] The working principle and beneficial effects of this invention are as follows: This invention integrates the windproof fixing block with the spray cleaning component, which helps to improve the problems of independent windproof and cleaning systems and complex installation and maintenance in traditional solutions. At the same time, the integrated design reduces the need for additional independent cleaning pipelines and nozzle brackets, which helps to save installation space, reduce material and installation costs, and simplify the overall layout of the power plant.

[0015] The pressure block of this invention can slide vertically via an elastic element. When the photovoltaic panel is lifted by wind load or expands and contracts due to thermal expansion and contraction, the pressure block can move upward and compress the spring, thereby continuously providing dynamic and adaptive downward pressure. This elastic buffering effect can effectively counteract the lifting effect of wind and absorb the high-frequency vibration of the photovoltaic panel, avoiding the problems of bolt loosening, preload failure, and even structural fatigue damage caused by long-term alternating stress in traditional rigid connection points, thus improving the safety of use in extreme weather conditions such as typhoons.

[0016] The water supply of the spray assembly of the present invention is connected through a water guide hose. Its flexibility ensures that the water connection is not affected when the pressure block slides up and down for windproof adjustment, and the functions do not interfere with each other. The spray assembly adopts a worm gear mechanism to adjust the angle of the nozzle. This mechanism has a large transmission ratio, which can realize the adjustment of the nozzle angle. It also has a reverse self-locking characteristic, which can reduce the risk of the nozzle angle changing due to water flow impact or vibration. This helps to make the cleaning water column more accurately cover the surface of the photovoltaic panel, improve the cleaning effect and water efficiency.

[0017] The first connector and the connector of the present invention both adopt a double gasket design, which effectively disperses the compressive stress at the connection point, prevents damage to the surface of the mounting plate or fixing block, and enhances the long-term stability of the connection. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a structural schematic diagram of a rooftop distributed photovoltaic spray block windproof fixing device according to the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing module in this invention; Figure 4 This is a schematic diagram of the edge fixing module of the present invention; Figure 5 for Figure 3 Enlarged structural diagram of section A in the middle; Figure 6 This is a schematic diagram of the structure of the first connector of the present invention; Figure 7 This is a schematic diagram of the structure of the second connector of the present invention; Figure 8 This is a schematic diagram of the structure of the first spray assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the adjusting component of the present invention; Figure 10 This is a schematic diagram of the screw hole structure of the present invention.

[0020] In the diagram: 1. Support frame; 2. Mounting plate; 21. Mounting groove; 3. Middle fixing module; 31. Middle fixing block; 32. First connector; 321. First bolt; 322. First washer; 323. Second washer; 324. Nut; 33. Second connector; 331. Second bolt; 332. Third washer; 333. Fourth washer; 34. First pressure block; 35. First slide groove; 36. First elastic element; 361. Slide rod; 362. Pull block; 363. Compression spring; 37. First spray... 371. Spray assembly; 372. Water collection base; 373. Water guide hose; 374. Hollow pipe; 375. Spray base; 376. Spray head; 376. Adjusting component; 3761. Protective box; 3762. Worm gear; 3763. Rotating cap; 3764. Worm wheel; 4. Side fixing module; 41. Side fixing block; 42. Third connecting component; 43. Second pressure block; 44. Second slide groove; 45. Second elastic component; 46. Second spray assembly; 5. Water supply pipe; 6. Water pump; 10. Photovoltaic panel; 101. Screw hole. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 10 As shown, this embodiment proposes a windproof fixing device for rooftop distributed photovoltaic spraying blocks, including a support frame 1. The top of the support frame 1 is fixedly connected to two parallel mounting plates 2. A plurality of photovoltaic panels 10 are arranged at equal intervals between the two mounting plates 2. A plurality of middle fixing modules 3 corresponding one-to-one with the photovoltaic panels 10 are arranged in the middle of the mounting plates 2. The two ends of the mounting plates 2 are provided with edge fixing modules 4 for fixing the corresponding photovoltaic panels 10. The middle fixing module 3 includes a middle fixing block 31. A first connecting member 32 for fixing to the mounting plate 2 is provided in the middle of the middle fixing block 31. A second connecting member 33 for fixing to the photovoltaic panel 10 is provided at both ends of the bottom of the middle fixing block 31. A first sliding groove 35 is vertically opened at both ends of the middle fixing block 31. A first pressing block 34 that abuts against the top surface of the photovoltaic panel 10 is slidably connected to the inner side of the two first sliding grooves 35. A first elastic member 36 is connected between the two first pressing blocks 34 and the top wall of the first sliding groove 35. A first spray assembly 37 is provided on the top of the two first pressing blocks 34. A water supply pipe 5 is fixedly connected to the inner side of the support frame 1. A water pump 6 is connected to the inlet end of the water supply pipe 5.

[0023] In this embodiment, the fixing module 3 is the core component for fixing the main body of the photovoltaic panel 10, and includes two parts: fixing and spraying. In terms of fixing, the middle fixing block 31 is fastened to the mounting plate 2 through the first connecting member 32 in the middle, and the two ends of the bottom of the middle fixing block 31 are connected to the photovoltaic panel 10 through the second connecting member 33; the first pressing block 34 is slidably connected in the first sliding groove 35 vertically opened at both ends of the middle fixing block 31, and the first elastic member 36 is provided between the first pressing block 34 and the top wall of the first sliding groove 35. Under the action of the elastic member, the first pressing block 34 continuously applies downward pressure, so that its bottom surface is in close contact with the top surface of the photovoltaic panel 10. This elastic pressing method allows the first pressing block 34 to slide upward along the first sliding groove 35 when the photovoltaic panel 10 is heated and expanded or lifted upward by wind force, compressing the first elastic member 36, thereby continuously providing downward pressure to resist wind load and prevent the photovoltaic panel 10 from tilting or falling off; Regarding the spraying, the first spraying assembly 37, located on top of the first pressure block 34, has its inlet connected to the water supply pipe 5 via a water guide hose 372. When the water pump 6 starts, water flows through the water supply pipe 5 and the water guide hose 372 into the first spraying assembly 37, and finally sprays out from the nozzle 375, thus cleaning the surface of the photovoltaic panel 10 below. The flexible design of the water guide hose 372 allows it to bend as the first pressure block 34 slides up and down without affecting the spraying function. This design integrates windproof fixing with cleaning and maintenance. The elastic clamping structure provides dynamic and adaptive clamping force, which can effectively cope with the deformation of photovoltaic panels caused by temperature changes and the lifting effect of wind, improve wind resistance, and prevent bolt connection points from loosening due to long-term alternating stress. The integrated spray module does not require additional cleaning equipment, saving installation space and costs, and can realize regular or on-demand cleaning of photovoltaic panel surfaces to maintain power generation efficiency.

[0024] It should be noted that some of the structures described in the following specific embodiments are further preferred structures based on the basic solution of the present invention, used to further improve the stability, durability, sealing performance, or adjustment reliability of the device under conditions such as high wind load, high vibration, and frequent spraying. For these further preferred structures, the description mainly focuses on their connection, cooperation, and functional relationships with the numbered main structures; without affecting the understanding and implementation of the basic technical solution of the present invention by those skilled in the art, these further preferred structures may not all be shown separately by reference numerals in the accompanying drawings. Those skilled in the art can make adaptive choices regarding their specific shape, size, material, installation method, and local connection form based on the disclosure of this application and in conjunction with conventional mechanical design methods.

[0025] In a further preferred embodiment of the present invention, the side fixing module 4 includes a side fixing block 41. The bottom of the side fixing block 41 is provided with a third connector 42 for fixing to the photovoltaic panel 10. The top of the side fixing block 41 is vertically provided with a second sliding groove 44. A second pressing block 43 is slidably connected to the inner side of the second sliding groove 44. A second elastic member 45 is connected between the second pressing block 43 and the top wall of the second sliding groove 44. A second spray assembly 46 is provided on the top of the second pressing block 43. The third connector 42 has the same structure as the second connector 33, the second elastic member 45 has the same structure as the first elastic member 36, and the second spray assembly 46 has the same structure as the first spray assembly 37.

[0026] In this embodiment, the edge fixing module 4 is used to fix the photovoltaic panel 10 located at the edge of the array, and its basic working principle is similar to that of the center fixing module 3. The side fixing block 41 is fixed to the photovoltaic panel 10 through the third connector 42 at the bottom. The third connector 42 can adopt the same structure as the second connector 33, that is, it is bolted through the mounting plate 2 and threaded into the screw hole 101 on the bottom wall of the photovoltaic panel 10. The second pressure block 43 is slidably connected in the second groove 44 at the top. The second pressure block 43 and the top wall of the second groove 44 are connected by the second elastic member 45, so that the second pressure block 43 elastically presses the edge of the photovoltaic panel 10. The top of the second pressure block 43 is also provided with a second spray assembly 46, whose water channel is connected to the water supply pipe 5 to realize the spray cleaning function. The side fixing module 4 ensures the consistency of the fixing method between the edge and the middle of the photovoltaic array, ensuring the uniformity of the force on the entire array. It also has the functions of elastic windproof pressing and integrated spraying, so that the photovoltaic panels at the edge of the array can also obtain the same windproof safety protection and cleaning effect, improving the uniformity and reliability of the whole device.

[0027] In a further preferred embodiment of the present invention, the first elastic member 36 includes a slide rod 361 that penetrates the top wall of the first slide groove 35. The bottom end of the slide rod 361 is fixedly connected to the first pressure block 34, and a pull block 362 is fixedly connected to the top of the slide rod 361. A compression spring 363 is sleeved on the slide rod 361. One end of the compression spring 363 abuts against the top wall of the first slide groove 35, and the other end of the compression spring 363 abuts against the first pressure block 34.

[0028] Further preferably, the compression spring 363 is specifically a cylindrical spring of equal diameter, with the large end of the variable pitch conical spring abutting against the first pressure block 34 and the small end abutting against the top wall of the first sliding groove 35. The structural design of the variable pitch conical spring has two advantages: firstly, the different natural frequencies of each coil effectively disrupt the resonance effect between the photovoltaic panel 10 and the fixing device under continuous strong wind loads such as typhoons, preventing the photovoltaic panel from cracking or tearing due to high-frequency resonance; secondly, when encountering extreme gusts that generate a huge instantaneous upward suction force, the small coil of the variable pitch conical spring can smoothly fit into the large coil during extreme compression, avoiding the rigid 'bottoming' impact generated by traditional equal diameter cylindrical springs during compression, thus providing a longer and gentler extreme buffer stroke for the first pressure block 34.

[0029] In this embodiment, under natural conditions, the spring force of the compression spring 363 pushes the first pressure block 34 downward to press it against the photovoltaic panel. When it is necessary to install or remove the photovoltaic panel, the pull block 362 can be pulled upward to drive the slide rod 361 and the first pressure block 34 to compress the spring 363 and move upward along the first slide groove 35, thereby relieving the pressure on the photovoltaic panel and facilitating operation. Using a compression spring 363 as the elastic source provides a stable and adjustable clamping force. The combination of slide bar 361 and pull block 362 makes the lifting operation of the clamping block very simple, which facilitates the installation, maintenance and replacement of photovoltaic panel 10 and improves construction efficiency. The preload of compression spring 363 can be selected as needed to adapt to different wind pressure environments and photovoltaic panel specifications.

[0030] In a further preferred embodiment of the present invention, the first connecting member 32 includes a first bolt 321 that penetrates the mounting plate 2, a nut 324 that is threaded to the top of the first bolt 321, and a first washer 322 and a second washer 323 that are arranged in parallel on the first bolt 321. The first washer 322 is located between the first bolt 321 and the mounting plate 2, and the second washer 323 is located between the intermediate fixing block 31 and the nut 324.

[0031] In this embodiment, the first connector 32 is used to fix the intermediate fixing block 31 to the mounting plate 2. It is secured by a first bolt 321 that passes through the mounting plate 2 and is locked at the top with a nut 324. A first washer 322 and a second washer 323 are fitted onto the first bolt 321. The first washer 322 is located between the bolt head and the mounting plate 2, and the second washer 323 is located between the intermediate fixing block 31 and the nut 324. The function of the first washer 322 and the second washer 323 is to increase the force-bearing area, reduce pressure, and prevent damage to the surfaces of the mounting plate 2 and the intermediate fixing block 31 during tightening. The double washer design enhances the stability and durability of the connection, effectively disperses the tightening pressure, and prevents deformation or damage to the mounting plate 2 and the fixing block due to stress concentration. The bolted connection is robust and reliable, and easy to disassemble and adjust.

[0032] In a further preferred embodiment of the present invention, the second connector 33 includes a second bolt 331 penetrating the mounting plate 2. The top end of the second bolt 331 is threaded into a screw hole 101 on the bottom wall of the photovoltaic panel 10. A third washer 332 and a fourth washer 333 are sleeved on the second bolt 331, which are arranged in parallel. The third washer 332 is located between the second bolt 331 and the mounting plate 2, and the fourth washer 333 is located between the photovoltaic panel 10 and the intermediate fixing block 31. The mounting plate 2 has a mounting groove 21 along its length, and the second bolt 331 and the first bolt 321 are both clearance-fitted into the mounting groove 21. The bottom wall of the photovoltaic panel 10 has a screw hole 101, and the second bolt 331 is threaded into the corresponding screw hole 101.

[0033] In this embodiment, the second connector 33 connects the intermediate fixing block 31 and the photovoltaic panel 10. It passes through the mounting plate 2 via a second bolt 331 and engages with a pre-drilled screw hole 101 at the bottom of the photovoltaic panel 10. The second bolt 331 is also fitted with a third washer 332 and a fourth washer 333. The third washer 332 is located between the bolt head and the mounting plate 2, and the fourth washer 333 is located between the photovoltaic panel 10 and the intermediate fixing block 31. The mounting plate 2 has a long, narrow mounting groove 21, within which the second bolt 331 can slide. This connection method directly fixes the photovoltaic panel 10 to the intermediate fixing block 31, forming a secure connection point. The double-waist design also protects the contact surface, and the mounting groove 21 allows the position of the second bolt 331 to be adjusted within a certain range, thus adapting to the mounting hole spacing of photovoltaic panels of different sizes, improving the versatility and installation tolerance of the device.

[0034] In a further preferred embodiment of the present invention, the mounting plate 2 is provided with a mounting groove 21 along the length direction, and the second bolt 331 and the first bolt 321 are both clearance-fitted with the mounting groove 21; the bottom wall of the photovoltaic panel 10 is provided with a screw hole 101, and the second bolt 331 is threadedly fitted with the corresponding screw hole 101.

[0035] In this embodiment, the mounting groove 21 opened along the length direction on the mounting plate 2 provides a mounting channel for the first bolt 321 and the second bolt 331. Both bolts are clearance-fitted with the mounting groove 21, which means that they can move along the length direction of the mounting groove 21 and then be tightened. The bottom wall of the photovoltaic panel 10 is pre-machined with standard screw holes 101 for mating with the second bolt 331. The mounting groove 21 is a key structure for adjusting the spacing between photovoltaic panels and aligning them during installation. During installation, the intermediate fixing block 31 can be pre-fixed in the approximate position of the mounting groove 21 by the first bolt 321. Then, the screw holes 101 of the photovoltaic panel 10 are aligned with the second bolt 331, and the second bolt 331 is tightened to fix the photovoltaic panel. Finally, the first bolt 321 of the first connector 32 is fully tightened. This design allows for flexible adjustment of the gap between adjacent photovoltaic panels and the longitudinal position of the entire photovoltaic panel on the mounting plate 2, adapting to diverse layout requirements and making the installation process more flexible and convenient.

[0036] In a further preferred embodiment of the present invention, the first spray assembly 37 includes a water collection base 371 fixedly connected to the top of the first pressure block 34. One end of the water collection base 371 is fixedly connected to a water guide hose 372, the inlet end of which is connected to a water supply pipe 5. A hollow tube 373 communicating with the interior of the water collection base 371 is rotatably connected to the top of the water collection base 371. A spray base 374 is fixedly connected to the top of the hollow tube 373, and the outlet end of the spray base 374 is fixed. A nozzle 375 is connected to the water collection base 371, and an adjusting component 376 is provided on the water collection base 371 to drive the hollow tube 373 to rotate. The adjusting component 376 includes a protective box 3761 fixedly connected to the top of the water collection base 371. A worm gear 3762 is rotatably connected to the inner side of the protective box 3761. A rotating cap 3763 is fixedly connected to one end of the worm gear 3762. A worm wheel 3764 is fixedly connected to the outer side of the hollow tube 373. The worm wheel 3764 meshes with the worm gear 3762.

[0037] It should be further clarified that the following description of the horn-shaped flexible limiting guide sleeve, corrugated folding section, cantilever bracket, limiting ring, V-shaped elastic sealing ring, conical stepped surface, first bearing, second bearing, wave spring, damping friction cone ring, and inner conical seat are all local optimizations or reinforcements based on the disclosed main structure. Their placement can be determined by the numbered main components to which they are attached or cooperate. The local optimizations or reinforcements mainly revolve around the disclosed structures such as the water guide hose 372, water collection seat 371, hollow tube 373, protective box 3761, worm gear 3762, and rotating cap 3763, and are used to further improve the bending slow-release, displacement compensation, sealing maintenance, gap reduction, or friction locking effects under dynamic working conditions. They are not the only necessary structures for the basic fixing and spraying synergy scheme of this invention to be established.

[0038] Preferably, a flared flexible guide sleeve is fitted around the connection between the water guide hose 372 and the water collection base 371. This flared flexible guide sleeve can be an elastic protective sleeve, with its small end fixedly connected to the water collection base 371 and its large end opening in a flared shape towards the extension direction of the water guide hose 372. By providing the flared flexible guide sleeve, the bending area at the root of the water guide hose 372 can be guided and limited, restricting its minimum bending radius and helping to disperse the bending stress at the connection point, thus improving the durability of the dynamic spray water system under high wind load and high vibration conditions.

[0039] Further preferably, in order to cooperate with the windproof dynamic displacement of the first pressure block 34, the water guiding hose 372 includes a corrugated folded section of a predetermined length, the corrugated folded section being located on the side away from the water collection seat 371; a cantilever bracket is fixedly connected to the side wall of the first pressure block 34, the end of the cantilever bracket is provided with a limiting ring, the water guiding hose 372 passes through the limiting ring, and is guided and limited at the limiting ring, and the corrugated folded section of the water guiding hose 372 is located between the limiting ring and the aforementioned trumpet-shaped flexible limiting guide sleeve.

[0040] The aforementioned flared flexible limiting guide sleeve, corrugated folded section, cantilever bracket, and limiting ring can all be understood as auxiliary guiding or buffering components arranged around the water-conducting hose 372, and their relative positional relationship is determined with reference to the connection path between the water-conducting hose 372, the water collection seat 371, and the first pressure block 34. Specifically, the flared flexible limiting guide sleeve is disposed on the outer side of the end of the water-conducting hose 372 near the water collection seat 371, the corrugated folded section is disposed in the deformable section of the water-conducting hose 372, the cantilever bracket is disposed on the side of the first pressure block 34, and the limiting ring is disposed at the end of the cantilever bracket away from the first pressure block 34, so as to guide and limit the local direction of the water-conducting hose 372. Those skilled in the art can make conventional adjustments to the specific installation position and structural form of the above components according to the length of the water-conducting hose 372, the bending radius requirements, and the displacement stroke of the first pressure block 34.

[0041] Its working principle and effect are as follows: When the first pressure block 34 experiences high-frequency and large-amplitude vertical movement while resisting wind loads, if the water-conducting hose 372 is in an unrestrained free state, uncontrollable pulling and swinging will occur. This application uses the cantilever bracket and limiting ring integrated with the first pressure block 34 to achieve synchronous rigid movement of a portion of the hose and the first pressure block 34. Through the cooperation of the cantilever bracket, limiting ring, and corrugated folding section, the relative displacement of the first pressure block 34 relative to the support frame 1 can be mainly compensated elastically by the corrugated folding section. The corrugated folding section naturally has excellent axial expansion and contraction capabilities, which, combined with the isolation effect of the limiting ring, can reduce the transmission of mechanical swinging stress to the depth of the pipeline and help to achieve a relatively flexible decoupling between dynamic windproof displacement and static water supply pipeline.

[0042] In this embodiment, water flows from the water supply pipe 5 through the water guide hose 372 into the water collection seat 371. The internal cavity of the water collection seat 371 is connected to the hollow tube 373, and the water flows upward into the hollow tube 373 and the spray seat 374 on its top, and finally sprays out from the nozzle 375; The hollow tube 373 is rotatably connected to the top of the water collection seat 371, and can be driven to rotate by the adjusting component 376. The adjusting component 376 adopts a worm gear mechanism: the worm wheel 3764 is fixed on the outside of the hollow tube 373, the worm 3762 meshes with the worm wheel 3764, and a rotating cap 3763 is installed at one end of the worm 3762. Rotating the rotating cap 3763 drives the worm gear 3762 to rotate, which in turn drives the worm wheel 3764 and the hollow tube 373, spray seat 374, and nozzle 375 fixed thereto to rotate together, thereby changing the spray angle. This design achieves precise, adjustable, and self-locking spray angle. The worm gear mechanism has a large transmission ratio, which can achieve fine adjustment of the nozzle direction, and has a reverse self-locking characteristic, that is, water flow impact or vibration will not cause the nozzle angle to change on its own, ensuring the stability of the spray direction. This allows the spray to more accurately cover the target photovoltaic panel surface, improving the cleaning effect and water efficiency. The protective box 3761 protects the worm gear mechanism from dust and rainwater corrosion.

[0043] Overall workflow: Installation and fixing process; First, two mounting plates 2 are fixedly installed parallel to each other on the top of the support frame 1. Mounting grooves 21, formed along the length of the mounting plates 2, provide adjustment space for subsequent bolt connections. When installing the photovoltaic panel 10, it is placed between the two mounting plates 2. For each photovoltaic panel 10 located in the center of the array, a corresponding center fixing module 3 is used for fixation. First, the center fixing block 31 is placed on the mounting plate 2, allowing the first bolt 321 of the first connector 32 to pass through the mounting groove 21 of the mounting plate 2, and then fitted with a first washer 322 and a second washer 323. The nut 324 is then used for initial tightening. At this point, the longitudinal position of the center fixing block 31 can be adjusted using the gap in the mounting groove 21. Next, the second bolt 331 of the second connector 33 passes through the mounting groove 21 of the mounting plate 2 and the pre-drilled screw hole 101 on the bottom wall of the photovoltaic panel 10, connecting the photovoltaic panel 10 to the center fixing block 31. A third washer 332 and a fourth washer 333 are fitted on the second bolt 331 to protect the contact surface. Finally, the nut 324 of the first connector 32 is fully tightened, completing the rigid connection between the center fixing block 31, the mounting plate 2, and the photovoltaic panel 10. For the photovoltaic panels 10 located at both ends of the array, edge fixing modules 4 are used for fixation. The process is similar to that of the fixed module 3 in the middle. The side fixing block 41 is connected and fixed to the photovoltaic panel 10 through the third connector 42 with the same structure. After the bolt connections are completed, the bottom surfaces of the two first pressure blocks 34 of the middle fixing module 3 automatically and continuously press against the top surface of the lower photovoltaic panel 10 under the elastic force of the first elastic element 36 (composed of a slide rod 361, a compression spring 363, and a pull block 362). Similarly, the second pressure block 43 of the side fixing module 4 presses against the edge photovoltaic panel 10 under the elastic force of the second elastic element 45. When installing or removing the photovoltaic panel, the first pressure block 34 can be moved upward by pulling the pull block 362, thereby temporarily releasing the clamping force and facilitating operation.

[0044] Windproof and adaptive workflow; When the photovoltaic panel 10 experiences an upward lifting force due to wind load or thermal expansion, the first pressure block 34 or the second pressure block 43, which was originally pressing against its surface, will be subjected to an upward thrust. At this time, the pressure block can slide upward along the corresponding first slide groove 35 or second slide groove 44, further compressing the compression spring 363 within the first elastic member 36 or second elastic member 45. After the spring is compressed, it generates a larger reverse elastic force, which is continuously applied downward to the photovoltaic panel 10 through the pressure block, forming a dynamic and adaptive clamping force. This design can effectively resist wind force, prevent the photovoltaic panel 10 from warping or falling off, alleviate the alternating stress at the bolt connection points, and improve wind resistance reliability. Especially when typhoons trigger high-frequency, intense alternating loads, the variable-pitch conical compression spring 363 dynamically breaks its natural frequency to eliminate resonance and prevents rigid impacts under extreme displacement. Simultaneously, the flared flexible limiting guide sleeve provides stress dispersion and minimum bending radius protection for the violently bending water-conducting hose 372. The windproof and vibration-damping system and the water protection system work together dynamically under extreme conditions, helping to maintain the structural safety and functional stability of the entire device.

[0045] The water pump 6 is started, and water is pumped into the water supply pipe 5 fixed inside the support frame 1. The water flows from the water supply pipe 5 to the water guide hose 372 of the first spray assembly 37 in each of the fixed modules 3, and to the water guide hose of the second spray assembly 46 in each of the side fixed modules 4, which has the same structure as the first spray assembly 37. The water flows through the water guide hose 372 into the water collection seat 371, and then upward through the hollow pipe 373 connected to it, reaching the spray seat 374, and finally spraying out from the nozzle 375 to clean the surface of the photovoltaic panel 10 below. The flexible design of the water guide hose 372 ensures that it will not hinder the sliding of the first pressure block 34 or the second pressure block 43 in the groove. Further preferably, in order to adapt to the spraying operation under high-frequency vibration conditions, the bottom end of the hollow pipe 373 extends to the water collection seat 371. Inside the cavity of 71, the hollow tube 373 has an annular sealing groove on the outer wall inside the water collecting seat 371. An elastic sealing ring with a V-shaped cross-section is embedded in the annular sealing groove. The opening of the V-shaped elastic sealing ring faces the water inlet direction of the water collecting seat 371 (i.e., downward). The inner wall of the water collecting seat 371 has a conical stepped surface that slides against the outer lip of the V-shaped elastic sealing ring. The inner diameter of the conical stepped surface gradually decreases along the upward direction of water flow.

[0046] Its working principle and effect are as follows: The high-frequency up-and-down movement of the first pressure block 34 during windproof buffering causes the hollow tube 373 to produce a slight radial sway within the water collection seat 371. Conventional O-ring seals are prone to gaps and leakage under such dynamic sway. This invention uses a V-shaped elastic sealing ring with its opening facing the water-facing side. When the water pump 6 pressurizes and supplies water, the pressurized water flow enters the V-shaped groove, self-excitedly expanding the outer lip of the sealing ring outward (the greater the water pressure, the greater the expansion force), making it tightly adhere to the conical stepped surface; at the same time, the excellent lip flexibility of the V-shaped sealing ring can absorb the radial runout error of the hollow tube 373 in real time. This structure cleverly utilizes the pressure of the cleaning water flow itself to achieve adaptive dynamic compensation sealing, improving the reliability of water circuit sealing under high wind pressure and high vibration conditions.

[0047] The aforementioned V-shaped elastic sealing ring and conical stepped surface can be understood as an auxiliary dynamic sealing structure between the hollow tube 373 and the water collection seat 371. The V-shaped elastic sealing ring can be embedded in the annular sealing mounting area formed on the outer circumference of the hollow tube 373, forming a sliding seal with the inner wall of the water collection seat 371. The conical stepped surface provides outward support or guiding contact for the V-shaped elastic sealing ring during axial preloading, water pressure, or relative rotation, thereby improving the sealing retention capability under relative rotation. Those skilled in the art can select the specific cross-sectional dimensions of the V-shaped elastic sealing ring, the type of elastic material, and the taper range of the conical stepped surface based on conventional sealing design principles.

[0048] This invention is not a simple physical assembly of existing windproof pressure blocks and ordinary sprinkler components. Under specific extreme conditions of "strong wind load + high-frequency vibration" such as coastal typhoons or heavy industrial areas, the various structures of this invention form a synergistic relationship: First, when the wind causes the photovoltaic panel to vibrate, the variable pitch compression spring 363 adaptively deforms to absorb energy and prevent wind damage; second, this violent windproof mechanical displacement is precisely captured by the cantilever limiting ring and entirely converted into the orderly expansion and contraction of the corrugated folded section of the water guide hose 372, preventing waterway tearing; third, the high-frequency vibration is simultaneously converted by the wave spring into a clamping force on the damping friction cone ring, coupled with the V-shaped elastic sealing ring that expands under water pressure, ensuring that the nozzle angle does not deflect and the waterway does not leak under high-frequency displacement. The above structures work synergistically in terms of 'energy absorption and buffering,' 'displacement compensation,' and 'vibration-resistant locking,' helping to improve the overall stability and operational reliability of the integrated device under extreme weather conditions.

[0049] To adjust the spray angle, adjuster 376 can be operated. Rotating the rotating cap 3763 causes the worm gear 3762 to rotate, which in turn drives the meshing worm wheel 3764 to rotate. The worm wheel 3764 is fixed to the outside of the hollow tube 373, thereby causing the hollow tube 373, the spray seat 374, and the nozzle 375 to rotate as a whole until the spray direction reaches the optimal coverage angle. The worm gear mechanism has a self-locking characteristic, which prevents the nozzle from shifting due to water flow impact during operation. In a further preferred embodiment, the two ends of the worm gear 3762 are rotatably connected to the inner wall of the protective box 3761 via a first bearing and a second bearing, respectively. The end of the worm gear 3762 away from the rotating cap 3763 extends out of the second bearing, and a wave spring is sleeved on this extension. One end of the wave spring abuts against the outer end face of the second bearing, and the other end abuts against the inner side wall of the protective box 3761. The wave spring is in a pre-compressed state and is used to apply an elastic preload force along its axial direction to the worm gear 3762.

[0050] Under extreme weather conditions such as typhoons, the high-frequency vibrations generated by the photovoltaic panel 10 are transmitted to the first spray assembly 37. In conventional worm gear mechanisms, under severe vibration, the clearance at the meshing surfaces of the gear teeth generates high-frequency rigid impacts, which can easily lead to self-locking failure or tooth surface fatigue wear, thereby causing the nozzle 375 angle to deviate. This invention, by setting an axially preloaded wave spring, enables the worm 3762 to have a slight elastic floating capability in the axial direction. This not only eliminates the meshing clearance between the worm wheel 3764 and the worm 3762, achieving backlash-free flexible meshing, but also converts the rigid impact force of high-frequency vibration into the elastic deformation energy of the wave spring, thereby improving the stability of the spray angle under extreme alternating loads.

[0051] In a further preferred embodiment, to further enhance the self-locking reliability under high-frequency vibration, a damping friction cone ring is fixedly sleeved on one end of the worm gear 3762 near the rotating cap 3763, and an inner conical seat matching the damping friction cone ring is provided on the side wall of the protective box 3761 near the rotating cap 3763; the elastic preload of the wave spring continuously pushes the worm gear 3762 along the axial direction of the worm gear 3762, driving the conical surface of the damping friction cone ring to tightly wed into and press against the inner conical seat, forming an auxiliary friction locking pair.

[0052] When encountering extreme typhoon weather, the violent alternating vibration of the photovoltaic panel 10 can cause microscopic rigid slippage (i.e., tooth deflection) on the meshing tooth surfaces of a conventional worm gear mechanism, resulting in the deflection of the nozzle 375. In this application, the continuous axial thrust of the wave spring not only eliminates gear backlash but also forces the damping friction cone ring to wedge into the inner conical seat. This design transforms a single "tooth surface meshing self-locking" into a dual self-locking mechanism of "tooth surface meshing + cone surface friction wedging". When adjusting the water spray angle, manually overcoming the elasticity of the wave spring and pressing the rotating cap 3763 allows the cone surface to separate and rotate smoothly; after adjustment, releasing the cap causes the cone surface to automatically wedge and lock instantly. This structure helps reduce the risk of microscopic tooth deflection caused by high-frequency resonance and improves the accuracy of maintaining the cleaning angle.

[0053] The aforementioned first bearing, second bearing, wave spring, damping friction cone ring, and inner conical seat are all further preferred support, preload, and auxiliary locking structures arranged around the worm gear 3762. Their relative positions can be determined by the assembly relationship between the worm gear 3762, the protective box 3761, and the rotating cap 3763. Specifically, the first and second bearings provide rotational support for the worm gear 3762, the wave spring applies axial elastic preload to the worm gear 3762, and the damping friction cone ring and inner conical seat form an additional friction fit interface to improve the angular stability of the worm gear 3762 under high-frequency vibration conditions. The specific dimensions, preload, friction pair materials, and contact forms of the above structures can be conventionally selected by those skilled in the art based on the device dimensions, spray adjustment resistance, and vibration level.

[0054] It should be understood that the above-mentioned further preferred structures are mainly used to enhance the working performance of the present invention under specific complex working conditions, and are not the only limitation on the basic technical solution of the present invention. For embodiments that do not adopt the above-mentioned local reinforcement structures, as long as the basic fixing structure, elastic clamping structure, and spraying coordination structure described in the specification and claims are still present, the basic technical concept of the present invention can still be realized. Regarding the specific connection method, installation method, dimensional parameters, and material selection of the above-mentioned local reinforcement structures, those skilled in the art can make conventional substitutions or equivalent adjustments without departing from the technical concept of the present invention.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A roof distributed photovoltaic sprinkling pressure block windproof fixing device, comprising a support frame (1), the top of the support frame (1) is fixedly connected with two parallel arranged mounting plates (2), a plurality of equidistant distributed photovoltaic panels (10) are arranged between the two mounting plates (2), characterized in that, The mounting plate (2) is provided with a plurality of middle fixing modules (3) in the middle and side fixing modules (4) are provided at both ends of the mounting plate (2). The middle fixing module (3) includes a middle fixing block (31). A first connector (32) is provided in the middle of the middle fixing block (31), and a second connector (33) is provided at both ends of the bottom. A first sliding groove (35) is vertically opened at both ends. A first pressing block (34) that abuts against the top surface of the photovoltaic panel (10) is slidably connected to the inner side of the two first sliding grooves (35). A first elastic element (36) is connected between the two first pressing blocks (34) and the top wall of the first sliding groove (35). A first spray assembly (37) is provided on the top of the first pressing block (34). The mounting plate (2) has a mounting groove (21) along its length, and the second connector (33) includes a second bolt (331) that passes through the mounting groove (21). The bottom wall of the photovoltaic panel (10) has a screw hole (101) that is threaded to the second bolt (331). A water supply pipe (5) is fixedly connected to the inner side of the support frame (1), and a water pump (6) is connected to the inlet end of the water supply pipe (5).

2. The roof distributed photovoltaic sprinkling pressure block wind-proof fixing device according to claim 1, characterized in that, The edge fixing module (4) includes a side fixing block (41). The bottom of the side fixing block (41) is provided with a third connector (42) for fixing to the photovoltaic panel (10). The top of the side fixing block (41) is vertically provided with a second sliding groove (44). The inner side of the second sliding groove (44) is slidably connected with a second pressure block (43). A second elastic element (45) is connected between the second pressure block (43) and the top wall of the second sliding groove (44). A second spray assembly (46) is provided on the top of the second pressure block (43). The edge fixing module (4) is connected and fixed to the photovoltaic panel (10) through the third connector (42). The photovoltaic panel (10) located at the edge of the array is elastically pressed and fixed by the sliding of the second pressure block (43) along the second sliding groove (44) and the elastic pressing of the second elastic element (45).

3. The windproof fixing device for rooftop distributed photovoltaic sprinkler blocks according to claim 2, characterized in that, The third connector (42) adopts the same connection structure as the second connector (33), and is threaded through the mounting plate (2) by bolts and threaded into the screw hole (101) on the bottom wall of the photovoltaic panel (10); the second elastic member (45) adopts the same elastic pressing structure as the first elastic member (36); the second spray assembly (46) adopts the same spray adjustment structure as the first spray assembly (37).

4. The roof distributed photovoltaic spray block windproof fixing device according to claim 3, characterized in that, The first elastic element (36) includes a slide rod (361) that penetrates the top wall of the first slide groove (35). The bottom end of the slide rod (361) is fixedly connected to the first pressure block (34). A pull block (362) is fixedly connected to the top of the slide rod (361). A compression spring (363) is sleeved on the slide rod (361). One end of the compression spring (363) abuts against the top wall of the first slide groove (35), and the other end of the compression spring (363) abuts against the first pressure block (34), so that the first pressure block (34) can slide vertically along the first slide groove (35) and continuously apply elastic pressing force to the top surface of the photovoltaic panel (10).

5. The roof distributed photovoltaic sprinkling press block windproof fixing device according to claim 3, characterized in that, The first connector (32) includes a first bolt (321) that passes through the mounting plate (2). The top end of the first bolt (321) is threaded with a nut (324). A first washer (322) and a second washer (323) are provided on the first bolt (321) in parallel. The first washer (322) is located between the first bolt (321) and the mounting plate (2). The second washer (323) is located between the intermediate fixing block (31) and the nut (324) to lock the intermediate fixing block (31) onto the mounting plate (2).

6. The roof distributed photovoltaic sprinkling press block windproof fixing device according to claim 1, characterized in that, The second connector (33) includes a second bolt (331) that penetrates the mounting plate (2). The top of the second bolt (331) is threaded into the screw hole (101) on the bottom wall of the photovoltaic panel (10). A third washer (332) and a fourth washer (333) are provided on the second bolt (331) in parallel. The third washer (332) is located between the second bolt (331) and the mounting plate (2), and the fourth washer (333) is located between the photovoltaic panel (10) and the intermediate fixing block (31) so as to connect and fix the photovoltaic panel (10) and the intermediate fixing block (31) through the second connector (33).

7. The roof distributed photovoltaic spray block windproof fixing device according to claim 6, characterized in that, The mounting plate (2) has a mounting groove (21) along its length. The second bolt (331) and the first bolt (321) are both fitted with the mounting groove (21) with a clearance, so that the middle fixing block (31) and the photovoltaic panel (10) can be installed in a position that can be adjusted along the length of the mounting groove (21).

8. The rooftop distributed photovoltaic sprinkler block windproof fixing device according to claim 7, characterized in that, The screw holes (101) on the bottom wall of the photovoltaic panel (10) are positioned corresponding to the mounting grooves (21) on the mounting plate (2), so that the second bolt (331) can be adjusted along the mounting grooves (21) and threaded into the corresponding screw holes (101).

9. The roof distributed photovoltaic sprinkling press block windproof fixing device according to claim 3, characterized in that, The first spray assembly (37) includes a water collection seat (371) fixedly connected to the top of the first pressure block (34). One end of the water collection seat (371) is fixedly connected to a water guide hose (372). The inlet end of the water guide hose (372) is connected to the water supply pipe (5). The top of the water collection seat (371) is rotatably connected to a hollow tube (373) communicating with the inside of the water collection seat (371). The top of the hollow tube (373) is fixedly connected to a spray seat (374). The outlet end of the spray seat (374) is fixedly connected to a nozzle (375). The water collection seat (371) is provided with an adjusting member (376) for driving the hollow tube (373) to rotate.

10. The roof distributed photovoltaic spray block windproof fixing device according to claim 9, characterized in that, The adjusting component (376) includes a protective box (3761) fixedly connected to the top of the water collection seat (371). A worm gear (3762) is rotatably connected to the inner side of the protective box (3761). A rotating cap (3763) is fixedly connected to one end of the worm gear (3762). A worm wheel (3764) is fixedly connected to the outer side of the hollow tube (373). The worm wheel (3764) meshes with the worm gear (3762).

Images