Photovoltaic support bolt corrosion protection cap structure

Abstract

The utility model relates to the technical field of protection, especially relates to a photovoltaic support bolt anticorrosive protection cap structure, including the protection cover and cylinder, the protection cover sets up in the periphery of nut, the protection cover is used for protecting nut, the protection cover inside is equipped with the thread groove of adaptation bolt, the cylinder is equipped with the pass -through of bolt mouth, the cylinder is used for protecting bolt head, the protection cover and cylinder butt -joint cooperation, the end of cylinder away from the protection cover is open and is equipped with the thread cylinder, the thread cylinder is used for covering the opening of cylinder, the thread cylinder is screwed in the opening end of cylinder through the thread, and the butt -joint end of protection cover and cylinder is provided with the lock catch spare, the utility model discloses through the protection cover wrapping nut, cylinder wrapping bolt head, and cooperate thread cylinder close cylinder opening, form airtight space, effectively insulate rainwater, humidity and corrosive medium, significantly improve the corrosion -resistant performance of bolt connection part, prolong the service life of photovoltaic support.

Description

Technical Field

[0001] This utility model relates to the field of protection technology, and in particular to a structure for a corrosion-resistant protective cap for photovoltaic bracket bolts. Background Technology

[0002] As a key supporting structure in solar photovoltaic power generation systems, photovoltaic (PV) brackets are primarily used for installing and securing PV modules. Exposed to the complex outdoor environment for extended periods, they require excellent corrosion resistance and structural stability. Currently, PV brackets are mostly manufactured using materials such as aluminum alloy, carbon steel, or stainless steel, and are modularly assembled using bolt connections. To extend the lifespan of the bolts during outdoor use, corrosion-resistant materials, surface coatings, or chemical plating are typically used on the bolts themselves to resist corrosion caused by rain, moisture, and other environmental factors. In addition, bolt caps made of plastic have also appeared on the market, designed to further isolate the bolts from external corrosive media.

[0003] However, existing bolt protection cap structures still have significant shortcomings. On the one hand, these protective caps are usually threaded and only apply to the threaded end of the bolt. They cannot effectively cover and fix the bolt shank in the photovoltaic support where both ends are exposed and there is no thread in the middle, causing this part of the metal to be directly exposed to the environment and prone to corrosion. At the same time, due to the lack of a reliable fixing method, the protective cap is easy to loosen or even fall off during use, making it difficult to achieve long-term protection. On the other hand, the outer surface of existing protective caps is relatively smooth, and after long-term static placement, they are prone to sticking or hardening with the bolt or surrounding structure, making them extremely slippery during disassembly, which brings great inconvenience to later maintenance and replacement. Therefore, it is necessary to design a corrosion-resistant protective cap structure for photovoltaic support bolts to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a structure for a corrosion-resistant protective cap for photovoltaic bracket bolts.

[0005] The technical solution is as follows: A photovoltaic bracket bolt anti-corrosion protective cap structure includes a protective sleeve and a cylinder. The protective sleeve is disposed around the nut and is used to protect the nut. The protective sleeve has a threaded groove adapted to the bolt inside. The cylinder has an opening for the bolt to pass through and is used to protect the bolt head. The protective sleeve and the cylinder are mated together to enclose the nut and bolt shank inside. It also includes a threaded cylinder, a positioning rod, a washer, a gasket, and a locking element. The end of the cylinder away from the protective sleeve is open and has a threaded cylinder, which is used for... The opening of the covered cylinder is covered. One end of the cylinder opening has an internal thread on its inner wall, and the other end of the threaded cylinder connected to the cylinder has an external thread on its outer wall. The threaded cylinder is screwed onto the opening end of the cylinder by the thread. The mating ends of the protective sleeve and the cylinder are provided with locking fasteners. The locking fasteners are used to lock the mating protective sleeve and the cylinder. The end faces of the protective sleeve and the cylinder that are close to each other are circumferentially fixed with positioning rods. A washer is installed at the positioning rod of the protective sleeve, and a washer is installed at the positioning rod of the cylinder. The washer and the washer are used to improve the sealing performance after the protective sleeve and the cylinder are mated.

[0006] Optionally, the locking element includes a support block and a locking plate. A retaining ring is fixedly provided on the outer wall of the protective sleeve near the end of the cylinder. Support blocks are symmetrically fixedly connected to both sides of the outer wall of the cylinder near the end of the protective sleeve. A locking plate is rotatably connected to the support block. A hook is provided on the end of the locking plate facing the retaining ring. The hook is used to hook and lock the retaining ring.

[0007] Optionally, an elastic sheet is provided between the support block and the card plate, the elastic sheet being used to reset and pop up the card plate on the support block.

[0008] Optionally, a sealing ring is provided on the outer wall of the connection end of the cylinder and the threaded cylinder, the sealing ring being used to improve the sealing performance of the connection end between the protective sleeve and the cylinder.

[0009] Optionally, the sealing ring has inclined surfaces at both ends, and the connecting ends of the cylinder and the threaded cylinder are provided with limit blocks. The side of the limit blocks that is close to each other is also an inclined surface. The inclined surface of the limit blocks matches the inclined surfaces at both ends of the sealing ring, which can stably compress the sealing ring and prevent it from loosening.

[0010] Optionally, a ring of anti-slip groove is formed on the side wall of the threaded cylinder away from the cylinder. The anti-slip groove is used to increase the friction of the side wall of the threaded cylinder and prevent slippage when the user twists the threaded cylinder.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses a protective sleeve to wrap the nut and a cylinder to wrap the bolt head, and a threaded cylinder to seal the opening of the cylinder, forming a sealed space that effectively isolates rainwater, moisture and corrosive media, significantly improves the corrosion resistance of the bolt connection and extends the service life of the photovoltaic bracket.

[0013] 2. The detachable design of the threaded cylinder of this utility model facilitates bolt insertion and tightening operations. Furthermore, the protective sleeve and the cylinder can be quickly locked together through the cooperation of hooks and rings, and docking and fixing can be completed without additional tools, thereby improving on-site assembly efficiency.

[0014] 3. The connection between the cylindrical and threaded cylinders of this utility model is provided with a sealing ring fixed by a beveled limiting block. The double sealing structure effectively prevents moisture and dust from seeping in, enhancing the overall protection reliability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram showing the protective sleeve and cylindrical buckle of this utility model.

[0017] Figure 3 This is a cross-sectional view of the protective sleeve and cylinder of this utility model in their separated state.

[0018] Figure 4 This is a schematic diagram of the protective sleeve, cylinder, threaded cylinder, nut, bolt, and positioning rod of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1_protective sleeve, 2_cylinder, 3_threaded cylinder, 4_nut, 5_bolt, 6_positioning rod, 7_washer, 8_waser, 9_ring, 10_support block, 11_clamping plate, 12_elastic sheet, 13_limiting block, 14_sealing ring, 15_anti-slip groove. Detailed Implementation

[0020] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0021] A type of anti-corrosion protective cap structure for photovoltaic bracket bolts, such as Figures 1-4As shown, the device includes a protective sleeve 1 and a cylinder 2. The protective sleeve 1 is positioned around the nut 4 and is used to protect the nut 4. The protective sleeve 1 has a threaded groove inside to accommodate the bolt 5. The cylinder 2 has an opening for the bolt 5 to pass through and is used to protect the head of the bolt 5. The protective sleeve 1 and the cylinder 2 are mated together to enclose the nut 4 and the bolt 5 inside. The device also includes a threaded cylinder 3, a positioning rod 6, a washer 7, a gasket 8, and a locking mechanism. The end of the cylinder 2 away from the protective sleeve 1 is open and has a threaded cylinder 3 attached to it. The threaded cylinder 3 is used to cover the opening of the cylinder 2. The inner wall of the open end of the cylinder 2 has internal threads, and the outer wall of the end of the threaded cylinder 3 connected to the cylinder 2 has external threads. The threaded cylinder 3 is screwed tightly onto the open end of the cylinder 2 via threads. The protective sleeve 1 and the cylinder 2... The mating end is equipped with a locking device for locking the protective sleeve 1 and cylinder 2 that are mated together. A positioning rod 6 is fixedly installed circumferentially on the end faces of the protective sleeve 1 and cylinder 2 that are close to each other. A washer 7 is installed at the positioning rod 6 of the protective sleeve 1, and a washer 8 is installed at the positioning rod 6 of the cylinder 2. The washer 7 and washer 8 are used to improve the sealing performance after the protective sleeve 1 and cylinder 2 are mated. First, unscrew the threaded cylinder 3 from the cylinder 2 and remove it. At this time, the user can insert the bolt 5 into the cylinder 2 and then into the nut 4 of the protective sleeve 1. Then, tighten the bolt 5 with a tool. At this time, the protective sleeve 1 and cylinder 2 are close to each other until the locking device locks the protective sleeve 1 and cylinder 2 together. Finally, screw the threaded cylinder 3 back onto the cylinder 2. At this time, the nut 4 and bolt 5 will be protected inside the protective sleeve 1 and cylinder 2.

[0022] like Figure 2 and Figure 3 As shown, the locking mechanism includes a support block 10 and a locking plate 11. A retaining ring 9 is fixedly provided on the outer wall of the protective sleeve 1 near the end of the cylinder 2. Support blocks 10 are symmetrically fixedly connected on both sides of the outer wall of the cylinder 2 near the end of the protective sleeve 1. The locking plate 11 is rotatably connected to the support block 10. A hook is provided at the end of the locking plate 11 facing the retaining ring 9. The hook is used to hook and lock the retaining ring 9.

[0023] like Figure 2 and Figure 3 As shown, an elastic piece 12 is provided between the support block 10 and the clamping plate 11. The elastic piece 12 is used to reset and pop up the clamping plate 11 on the support block 10.

[0024] like Figure 2 As shown, a sealing ring 14 is provided on the outer wall of the connection end of the cylinder 2 and the threaded cylinder 3. The sealing ring 14 is used to improve the sealing performance of the connection end between the protective sleeve 1 and the cylinder 2.

[0025] like Figure 3 and Figure 4As shown, the sealing ring 14 has inclined surfaces at both ends, and the connecting ends of the cylinder 2 and the threaded cylinder 3 are provided with limit blocks 13. The side of the limit blocks 13 that is close to each other is also an inclined surface. The inclined surface of the limit blocks 13 matches the inclined surfaces at both ends of the sealing ring 14, which can stably press the sealing ring 14 and prevent it from loosening.

[0026] like Figure 1 As shown, a ring of anti-slip groove 15 is formed on the side wall of the threaded cylinder 3 away from the cylinder 2. The anti-slip groove 15 is used to increase the friction of the side wall of the threaded cylinder 3 and prevent slippage when the user twists the threaded cylinder 3.

[0027] First, the protective sleeve 1, pre-loaded with the thread of the matching bolt 5, is tightened and fixed to the nut 4 of the photovoltaic bracket, acting as a protective shell. During installation, the operator unscrews the threaded sleeve 3 sealed at the end of the cylinder 2, leaving one end of the cylinder 2 open. Then, the bolt 5 is passed through the through hole of the cylinder 2 and screwed forward into the thread of the already positioned protective sleeve 1. When the bolt 5 is tightened with a tool, the axial tension generated by the bolt 5 will pull the protective sleeve 1 and the cylinder 2 closer together. During this process, the positioning rods 6, which are fixed to the end faces of both, guide each other to ensure accurate alignment. At the same time, the washer 7 and washer 8 installed at the positioning rod 6 are pressed together, forming the first radial seal along the end face, effectively blocking external contaminants. Invading from the seam, as the protective sleeve 1 and the cylinder 2 are fully fitted, the retaining plate 11 on the cylinder 2 rebounds rapidly under the elastic force of the pre-placed elastic plate 12, so that the hook at the front end of the retaining plate 11 is firmly locked onto the retaining ring 9 on the outer wall of the protective sleeve 1, ensuring that the main cavity will not be accidentally loosened due to vibration or temperature stress under complex working conditions, thereby maintaining the stable pressing state of the core sealing surface; finally, the threaded cylinder 3 is screwed back into the thread at the end of the cylinder 2 and tightened. Thus, through the triple protection of the mating surface sealing of the washer ring 7 and the washer 8, the rigid locking of the fastener, and the sealing of the end of the threaded cylinder 3, the nut 4, the bolt 5 and the threaded pair are completely encapsulated in a sealed space physically isolated from the external corrosive environment, achieving the goal of long-term anti-corrosion protection.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A structure for a protective cap for a photovoltaic bracket bolt corrosion protection, comprising a protective sleeve (1) and a cylinder (2), wherein the protective sleeve (1) is disposed around a nut (4), the protective sleeve (1) has a threaded groove adapted to the bolt (5) inside, and the cylinder (2) has a through opening for the bolt (5) to pass through, wherein the protective sleeve (1) and the cylinder (2) are mated together. Its features are, It also includes a threaded cylinder (3), a positioning rod (6), a washer (7), a gasket (8), and a locking element. The end of the cylinder (2) away from the protective sleeve (1) is open and is provided with a threaded cylinder (3). The threaded cylinder (3) is used to cover the opening of the cylinder (2). The threaded cylinder (3) is screwed onto the open end of the cylinder (2) by threads. The joint end of the protective sleeve (1) and the cylinder (2) is provided with a locking element. The locking element is used to lock the protective sleeve (1) and the cylinder (2) that are connected to each other. The end faces of the protective sleeve (1) and the cylinder (2) that are close to each other are circumferentially fixed with a positioning rod (6). A gasket (7) is installed at the positioning rod (6) of the protective sleeve (1). A gasket (8) is installed at the positioning rod (6) of the cylinder (2).

2. The anti-corrosion protective cap structure for photovoltaic bracket bolts according to claim 1, characterized in that, The locking component includes a support block (10) and a locking plate (11). A retaining ring (9) is fixedly provided on the outer wall of the protective sleeve (1) near the end of the cylinder (2). Support blocks (10) are symmetrically fixedly connected on both sides of the outer wall of the cylinder (2) near the end of the protective sleeve (1). A locking plate (11) is rotatably connected on the support block (10). A hook is provided at the end of the locking plate (11) facing the retaining ring (9). The hook is used to hook and lock the retaining ring (9).

3. The anti-corrosion protective cap structure for photovoltaic bracket bolts according to claim 2, characterized in that, An elastic sheet (12) is provided between the support block (10) and the card plate (11).

4. The anti-corrosion protective cap structure for photovoltaic bracket bolts according to claim 1, characterized in that, A sealing ring (14) is provided on the outer wall of the connection end of the cylindrical (2) and the threaded cylinder (3).

5. The anti-corrosion protective cap structure for photovoltaic bracket bolts according to claim 4, characterized in that, The sealing ring (14) has inclined surfaces at both ends. The connecting ends of the cylinder (2) and the threaded cylinder (3) are provided with limit blocks (13). The side of the limit blocks (13) that are close to each other is also an inclined surface. The inclined surface of the limit block (13) matches the inclined surface at both ends of the sealing ring (14).

6. The anti-corrosion protective cap structure for photovoltaic bracket bolts according to claim 1, characterized in that, The threaded cylinder (3) has a ring of anti-slip grooves (15) on the side wall away from the cylinder (2).

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