Fastening connecting piece for solar photovoltaic construction

Abstract

The utility model relates to the technical field of solar photovoltaic installation, and discloses a fastening connecting piece for solar photovoltaic construction, which comprises a guide rail, a cover plate is arranged at the top of the guide rail, side plates are arranged on two sides of the cover plate, first screw rods are in bearing connection with the middle parts of the two side plates and close to the upper sides, and the first screw rods are in bearing connection with the guide rail. The top face of the limiting plate is fixedly connected with locking blocks which are symmetrically arranged, an opening is formed in the middle of the top of the guide rail, and the device drives the side plates to move by twisting the first screw rod, so that the distance between the opposite faces of the two side plates is adjusted to be matched with the width of the guide rail. The cover plate can be stably installed on the guide rails with different widths, the adaptability of the cover plate is improved, and when the limiting plate moves upwards, the two locking blocks move upwards along with the limiting plate and are inserted into the corresponding locking grooves in the two sides of the guide rails, so that the cover plate and the limiting plate are further limited to move along the two ends of the guide rails; therefore, the mounting stability of the cover plate on the guide rail is improved in all directions.

Description

Technical Field

[0001] This utility model relates to the field of solar photovoltaic installation technology, and in particular to a fastening connector for solar photovoltaic construction. Background Technology

[0002] Photovoltaic (PV) mounting systems are specialized supports used in photovoltaic (PV) power plants for installing, placing, supporting, fixing, and adjusting PV modules. They, along with PV modules, combiner boxes, inverters, and other core equipment, constitute the PV power generation system. As a crucial support structure for PV modules, the safety and ease of installation of the PV mounting system are paramount. The selection of the PV mounting system significantly impacts the economic indicators, land use quotas, and construction scale of the PV power plant. During use, PV mounting systems typically require fasteners to connect the PV panels. Inside the guide rail, a limiting plate slides in from one end of the rail, and then the screws on the outside of the limiting plate are tightened. This causes the limiting plate to clamp and fix itself to the outside of the guide rail, thus securing the fasteners and facilitating the installation of the PV panels.

[0003] For example, Chinese patent publication number (CN222254553U) discloses a photovoltaic bracket fastening accessory, which includes a guide rail and a pressure cap. A second screw is rotatably mounted on both the front and rear sides inside the pressure cap, and a fixing nut is fixedly installed at the upper end of the second screw located at the upper end of the pressure cap. This device has two limiting plates, and the two limiting plates are simultaneously controlled to rotate through a transmission structure to achieve limiting, thereby making the fastening accessory easy and quick to assemble and disassemble.

[0004] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: the pressure cap in the device can only be stably installed on a guide rail of fixed width. If it is installed on a guide rail of larger width, although it can be fixed, the stability will decrease and it will be easy to loosen. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the stability of the pressure cap decreases when it is installed on guide rails of different widths. To address this, we propose a fastening connector for solar photovoltaic construction.

[0006] To achieve the above objectives, this application adopts the following technical solution: a fastening connector for solar photovoltaic construction, comprising a guide rail, a cover plate on the top of the guide rail, side plates on both sides of the cover plate, a first screw connected to the middle of the two side plates near the upper side by a bearing, threaded holes on the middle of the cover plate near the middle of both sides of the two side plates, the opposing ends of the two first screws being threaded into the two threaded holes respectively, the first screws and threaded holes being used to adjust the side plates, a second screw being movably connected to the middle of the cover plate, a limit plate being connected to the lower end face of the second screw by a bearing, locking blocks being fixedly connected to the top surface of the limit plate in a symmetrical arrangement, an opening in the middle of the top of the guide rail, a plurality of locking grooves on both sides of the opening, the locking blocks being adapted to the locking grooves, the locking grooves and locking blocks being used to restrict the cover plate and the limit plate from moving toward the two ends of the guide rail.

[0007] Preferably, the central bearing of the cover plate is connected to a threaded tube, and the second screw is threadedly connected to the inner cavity of the threaded tube and extends to the outside at both ends. The threaded tube is used to rotate the limiting plate.

[0008] Preferably, two insertion holes are provided in the middle of the top surface of the cover plate. The two insertion holes are arranged in a ring array about the threaded tube. A connecting plate is fixedly sleeved on the upper end of the outer wall of the threaded tube. Two insertion rods arranged in a ring array about the threaded tube are movably sleeved on the connecting plate. A connecting block is fixedly connected to the upper end of the insertion rod. A spring is sleeved on the upper end of the outer wall of the insertion rod. The two ends of the spring are fixedly connected to the top surface of the connecting plate and the bottom surface of the connecting block, respectively.

[0009] Preferably, each of the side plates is movably fitted with a first guide rod that is horizontally symmetrical about the first screw, and one end face of the first guide rod is fixedly connected to the side wall of the cover plate.

[0010] Preferably, a connecting piece is fixedly connected to the top surface of both side plates, and the top surface of the connecting piece is engraved with scale markings. Pointers are fixedly connected to both sides of the top surface of the cover plate. The pointers cooperate with the scale markings on the connecting pieces. The pointers and connecting pieces are used to determine the adjustment distance of the side plates.

[0011] Preferably, a nut block is fixedly connected to the upper end face of the second screw, and a hexagonal slot is provided on the top surface of the nut block. The nut block and the hexagonal slot can be used to easily twist the second screw to rotate.

[0012] Preferably, the lower end of the outer wall of the threaded tube is fixedly connected to two symmetrically arranged fixing blocks. A second guide rod is movably sleeved in the middle of each fixing block. The lower end face of the second guide rod is fixedly connected to the top surface of the limiting plate. The second guide rod and the fixing blocks are used to restrict the limiting plate from rotating with the second screw.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, by twisting the first screw, the side plates are moved, thereby adjusting until the distance between the facing surfaces of the two side plates matches the width of the guide rail. This allows the cover plate to be stably installed on guide rails of different widths, improving the adaptability of the cover plate.

[0015] In this invention, when the limiting plate moves upward, the two locking blocks also move upward and are inserted into the corresponding locking grooves on both sides of the guide rail, further restricting the movement of the cover plate and the limiting plate along both ends of the guide rail, thereby comprehensively improving the installation stability of the cover plate on the guide rail. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the limiting plate in this utility model;

[0019] Figure 3 This is a schematic diagram of the threaded tube in this utility model;

[0020] Figure 4 This is a schematic diagram of the cover plate in this utility model;

[0021] Figure 5 This is a schematic diagram of the guide rail structure in this utility model.

[0022] Legend: 1. Guide rail; 2. Cover plate; 3. Side plate; 4. First screw; 5. Threaded hole; 6. Second screw; 7. Limiting plate; 8. Locking block; 9. Opening; 10. Locking groove; 11. Threaded tube; 12. Insertion hole; 13. Connecting plate; 14. Insert rod; 15. Connecting block; 16. Spring; 17. First guide rod; 18. Connecting piece; 19. Pointer; 20. Nut block; 21. Hexagonal slot; 22. Fixing block; 23. Second guide rod. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Reference Figure 1-5 As shown, this utility model provides a technical solution: a fastening connector for solar photovoltaic construction, including a guide rail 1, a cover plate 2 on the top of the guide rail 1, and side plates 3 on both sides of the cover plate 2. A first screw 4 is bearing-connected to the middle and near the upper part of each of the two side plates 3. The first screw 4 is a commonly available hand-tightening bolt, which can be directly rotated by hand. Threaded holes 5 are opened in the middle of both sides of the cover plate 2 near the two side plates 3. The opposing ends of the two first screws 4 are respectively threaded to two… Inside the threaded hole 5, the first screw 4 and the threaded hole 5 are used to adjust the side plate 3. The second screw 6 is movably connected to the middle of the cover plate 2. The lower end face of the second screw 6 is connected to the limit plate 7 by a bearing. The top surface of the limit plate 7 is fixedly connected to the locking blocks 8 arranged symmetrically. The top center of the guide rail 1 has an opening 9. Several locking grooves 10 are opened on both sides of the opening 9. The locking blocks 8 are adapted to the locking grooves 10. The locking grooves 10 and the locking blocks 8 are used to restrict the cover plate 2 and the limit plate 7 from moving toward both ends of the guide rail 1.

[0025] The central bearing of the cover plate 2 is connected to a threaded tube 11. The second screw 6 is threaded into the inner cavity of the threaded tube 11 and extends to the outside at both ends. The threaded tube 11 is used to rotate the limiting plate 7. By twisting the threaded tube 11, the limiting plate 7 can be rotated together.

[0026] Two insertion holes 12 are provided in the middle of the top surface of the cover plate 2. The two insertion holes 12 are arranged in a circular array about the threaded tube 11. A connecting plate 13 is fixedly sleeved on the upper end of the outer wall of the threaded tube 11. Two insertion rods 14 arranged in a circular array about the threaded tube 11 are movably sleeved on the connecting plate 13. A connecting block 15 is fixedly connected to the upper end of the insertion rod 14. A spring 16 is sleeved on the upper end of the outer wall of the insertion rod 14. The two ends of the spring 16 are fixedly connected to the top surface of the connecting plate 13 and the bottom surface of the connecting block 15, respectively. When the insertion rod 14 moves to be vertically aligned with the insertion hole 12, the limiting plate 7 rotates exactly 90°, so as to facilitate the adjustment of the locking block 8 on the limiting plate 7 to the angle of vertical alignment with the locking groove 10.

[0027] Each side plate 3 is movably fitted with a first guide rod 17 that is horizontally symmetrically arranged with respect to the first screw 4. One end face of the first guide rod 17 is fixedly connected to the side wall of the cover plate 2. The first guide rod 17 restricts the side plate 3 from rotating with the first screw 4, so that the side plate 3 can only move horizontally in a straight line.

[0028] Both side plates 3 have connecting pieces 18 fixedly connected to their top surfaces. The top surfaces of the connecting pieces 18 are engraved with scale markings. Pointers 19 are fixedly connected to both sides of the top surface of the cover plate 2. The pointers 19 correspond to the scale markings on the connecting pieces 18, and are used to determine the adjustment distance of the side plates 3. By observing the scale markings on the connecting pieces 18 corresponding to the pointers 19, the distance the side plates 3 have moved during adjustment can be determined, allowing the side plates 3 to be adjusted before the cover plate 2 is placed on the guide rail 1.

[0029] A nut block 20 is fixedly connected to the upper end face of the second screw 6. A hexagonal slot 21 is provided on the top surface of the nut block 20. The nut block 20 and the hexagonal slot 21 allow the second screw 6 to be turned easily using tools. A socket wrench can be used to directly clamp the nut block 20 for rotation, or a hexagonal wrench can be inserted into the hexagonal slot 21 to turn the nut block 20.

[0030] Two symmetrically arranged fixing blocks 22 are fixedly connected to the lower end of the outer wall of the threaded tube 11. A second guide rod 23 is movably sleeved in the middle of each fixing block 22. The lower end face of the second guide rod 23 is fixedly connected to the top surface of the limiting plate 7. The second guide rod 23 and the fixing blocks 22 are used to restrict the limiting plate 7 from rotating with the second screw 6. When the threaded tube 11 rotates, the second guide rod 23 and the fixing blocks 22 can directly cause the limiting plate 7 to rotate with it. At the same time, the second guide rod 23 and the fixing blocks 22 can also restrict the limiting plate 7 from rotating with the second screw 6.

[0031] Working principle: First, the width of guide rail 1 is measured. Then, by twisting the first screw 4, it moves within the threaded hole 5, thereby causing the side plate 3 to move closer to or further away from the cover plate 2. This adjustment continues until the distance between the facing surfaces of the two side plates 3 matches the width of guide rail 1. At this point, the cover plate 2 is placed on top of guide rail 1, and the facing surfaces of the two side plates 3 will tightly adhere to both sides of guide rail 1, effectively restricting the cover plate 2 from moving towards either side of guide rail 1, enhancing its installation stability, preventing it from shifting to either side, and allowing the cover plate to be stably installed on guide rails of different widths, thus improving the adaptability of the cover plate 2. The limiting plate 7 extends into the inside of guide rail 1 through opening 9. First, the threaded tube 11 is rotated, and the rotation of the threaded tube 11 causes the limiting plate 7 to rotate synchronously by 90°, preventing the limiting plate 7 from moving out of guide rail 1 through opening 9 after moving upwards. During this process, the rotation of the threaded tube 11 also causes the connecting plate 13 to rotate, thereby causing the insertion rod 14 to move. When the insertion rod 14 is aligned vertically with the insertion hole 12, the elastic force of the spring 16 will pull the connecting block 15 downward. The connecting block 15 pushes the insertion rod 14 into the insertion hole 12, thereby locking the threaded tube 11 and preventing it from rotating further. At this time, the limiting plate 7 has also completed a 90° rotation. Finally, the limiting plate 7 is fixed: using a tool to twist the nut block 20, the nut block 20 drives the second screw 6 to rotate and move upward. The second screw 6 then pushes the limiting plate 7 upward until the two sides of the top surface of the limiting plate 7 are tightly fitted with the two sides of the inner top surface of the guide rail 1. This fixes the cover plate 2 and prevents it from moving upward. At the same time, the two locking blocks 8 on the limiting plate 7 also move upward and insert into the corresponding locking grooves 10 on both sides of the guide rail 1, further restricting the movement of the cover plate 2 and the limiting plate 7 along both ends of the guide rail 1, thereby comprehensively improving the installation stability of the cover plate 2 on the guide rail 1.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A fastening connector for solar photovoltaic construction, characterized in that, The system includes a guide rail, a cover plate on top of the guide rail, and side plates on both sides of the cover plate. A first screw is bearing-connected to the middle of each side plate near its upper side. Threaded holes are formed in the middle of both sides of the cover plate near the middle of each side plate. The opposing ends of the two first screws are threaded into the two threaded holes. The first screws and threaded holes are used to adjust the side plates. A second screw is movably connected to the middle of the cover plate. A limit plate is bearing-connected to the lower end of the second screw. A symmetrically arranged locking block is fixedly connected to the top surface of the limit plate. An opening is formed in the middle of the top of the guide rail, and several locking grooves are formed on both sides of the opening. The locking blocks are adapted to the locking grooves. The locking grooves and locking blocks are used to restrict the movement of the cover plate and the limit plate towards both ends of the guide rail.

2. The fastening connector for solar photovoltaic construction according to claim 1, characterized in that: The cover plate has a central bearing connected to a threaded tube, and the second screw is threaded into the inner cavity of the threaded tube and extends to the outside at both ends. The threaded tube is used to rotate the limiting plate.

3. The fastening connector for solar photovoltaic construction according to claim 1, characterized in that: Two insertion holes are provided in the middle of the top surface of the cover plate. The two insertion holes are arranged in a ring array about the threaded tube. A connecting plate is fixedly sleeved on the upper end of the outer wall of the threaded tube. Two insertion rods arranged in a ring array about the threaded tube are movably sleeved on the connecting plate. A connecting block is fixedly connected to the upper end of the insertion rod. A spring is sleeved on the upper end of the outer wall of the insertion rod. The two ends of the spring are fixedly connected to the top surface of the connecting plate and the bottom surface of the connecting block, respectively.

4. The fastening connector for solar photovoltaic construction according to claim 1, characterized in that: Each of the side plates is movably fitted with a first guide rod that is horizontally symmetrical about the first screw, and one end face of the first guide rod is fixedly connected to the side wall of the cover plate.

5. The fastening connector for solar photovoltaic construction according to claim 1, characterized in that: Both side plates are fixedly connected to the top surface of each side plate. The top surface of the connecting plate is engraved with scale markings. Both sides of the top surface of the cover plate are fixedly connected to pointers. The pointers cooperate with the scale markings on the connecting plates. The pointers and connecting plates are used to determine the adjustment distance of the side plates.

6. The fastening connector for solar photovoltaic construction according to claim 1, characterized in that: A nut block is fixedly connected to the upper end face of the second screw. A hexagonal slot is provided on the top surface of the nut block. The nut block and the hexagonal slot allow the second screw to be easily rotated using tools.

7. The fastening connector for solar photovoltaic construction according to claim 2, characterized in that: The lower end of the outer wall of the threaded tube is fixedly connected to two symmetrically arranged fixing blocks. A second guide rod is movably sleeved in the middle of each fixing block. The lower end face of the second guide rod is fixedly connected to the top surface of the limiting plate. The second guide rod and the fixing blocks are used to restrict the limiting plate from rotating with the second screw.

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