Windproof and anti-pulling fixing device for photovoltaic panel

Abstract

This utility model relates to the field of fixing device technology, and more particularly to a windproof and pull-out resistant fixing device for photovoltaic panels. It includes a base, a connecting pile at the top center of the base, a column installed in the connecting pile, and a support column fixedly connected to the connecting pile and a connecting plate installed at the top of the support column. This utility model connects the base to a concrete layer, with the support column installed on the base. The connecting plate at the top of the support column is used to fix the photovoltaic panel assembly. A support rod with a diagonal tension structure is provided between the support column and the base, converting the bending moment at the top of the connecting plate into vertical pressure on the base, making the structure between the base and the concrete layer more stable. Pull-out resistant piles that can penetrate deep into the soil are installed inside the support column to improve the overall pull-out resistance of the fixing device, thereby reducing the local pressure on the connection structure between the base and the concrete and preventing loosening of the connection between the base and the concrete.

Description

Technical Field

[0001] This utility model relates to the field of fixing device technology, and in particular to a windproof and pull-out resistant fixing device for photovoltaic panels. Background Technology

[0002] As the core component of a solar power generation system, photovoltaic panels convert light energy into electrical energy through the photovoltaic effect of semiconductor materials. They are widely installed on the ground and rooftops. Their stability directly affects the power generation efficiency and system lifespan. Therefore, reliable fixing devices are needed to install and fix the photovoltaic panels to ensure stable support between the ground and the photovoltaic panels.

[0003] Traditional photovoltaic (PV) panel mounting systems primarily use cast-in-place or precast concrete blocks to form a base, with the mounting device secured to the base via expansion bolts. This approach is suitable for PV panel mounting scenarios where various ground surfaces serve as the foundation. However, the surface of a single cast-in-place structure has poor wind erosion resistance, making it prone to damage and peeling at the connection between the bolts and the base due to the significant localized pressure exerted on the PV panel by the wind. Over time, this leads to loosening of the connection between the bolts and the base, insufficient overturning moment, and overall instability under strong winds, resulting in damage to the modules. Utility Model Content

[0004] The purpose of this invention is to provide a windproof and pull-out resistant fixing device for photovoltaic panels to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A wind-resistant and pull-out-resistant fixing device for photovoltaic panels includes a base, a connecting pile at the top center of the base, a column installed in the connecting pile, a support column fixedly connected to the connecting pile and a connecting plate installed at the top of the support column, a guide hole along the central axis of the support column, the guide hole passing through the connecting plate and the support column sequentially from top to bottom, a pull-out-resistant pile slidably installed in the guide hole, one end of the pull-out-resistant pile movably passing through the base and connecting to the ground, and a plurality of anti-backlash components provided on the outer surface of the pull-out-resistant pile; A support rod is installed between the base and the support column.

[0006] Preferably, a reinforcing rib is connected between the bottom end face of the connecting plate and the support column, and a first connecting hole penetrating the connecting plate is provided at each of the four corners of the connecting plate.

[0007] Preferably, the base has fixing holes at its four corners, and a plurality of second support rings are provided on the base. The outer periphery of the support column has a plurality of first support rings corresponding to the plurality of second support rings, and a support rod is connected between the corresponding first support rings and second support rings.

[0008] Preferably, the connecting pile has a second connecting hole inside, the second connecting hole has an internal thread, the bottom end of the support column has a connecting bolt, the outer wall of the support column has an external thread that meshes with the internal thread, the connecting pile and the base have a second limiting ring, and the bottom wall of the connecting bolt and the top wall of the second limiting ring are movable against each other.

[0009] Preferably, the connecting bolt has a first through hole along its central axis, and the base has a second through hole. The second through hole is coaxial with the connecting pile, and the first through hole and the second through hole have the same diameter and are connected.

[0010] Preferably, the first through hole and the second through hole are slidably connected to the pull-out pile.

[0011] Preferably, a first limiting ring is provided between the connecting bolt and the support column, a limiting block is connected to the top of the anti-tension pile, the bottom wall of the limiting block is movable against the top wall of the first limiting ring, and a pointed tip is provided at the bottom of the anti-tension pile.

[0012] Preferably, the outer wall of the anti-uplift pile is provided with a plurality of receiving grooves, and a plurality of the anti-reverse components are respectively arranged in the plurality of receiving grooves.

[0013] Preferably, the anti-reverse assembly includes a wedge, one bottom end of which is connected to a rotating shaft, and both ends of the rotating shaft pass through the opposite sidewalls of the wedge and are rotatably connected to the corresponding sidewalls of the receiving groove.

[0014] Preferably, in the vertical direction, the distance between the end face of the receiving groove relative to the wedge block and the central axis of the pull-out pile gradually decreases from top to bottom.

[0015] Compared with the prior art, this utility model provides a windproof and pull-out resistant fixing device for photovoltaic panels, which has the following beneficial effects: This utility model connects a base to a concrete layer, with a support column installed on the base. A connecting plate is installed at the top of the support column for fixing the photovoltaic panel assembly. A support rod with an inclined tension structure is provided between the support column and the base, which converts the bending moment at the top of the connecting plate into vertical pressure on the base, making the structure between the base and the concrete layer more stable. An anti-pull-out pile that can penetrate deep into the soil layer is installed inside the support column to improve the pull-out resistance of the overall fixing device, thereby reducing the local pressure on the connection structure between the base and the concrete and preventing the connection between the base and the concrete from loosening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the upper right three-dimensional structure of this utility model; Figure 2 This is a front view structural diagram of the present utility model; Figure 3This is a front view sectional diagram of the present invention; Figure 4 This is an exploded three-dimensional structural diagram of the upper right of this utility model; Figure 5 This is a partial cross-sectional view of the upper right three-dimensional structure of this utility model; Figure 6 For the present utility model Figure 4 Enlarged view of a portion of the structure at point A; Figure 7 This is a partial cross-sectional schematic diagram of the anti-uplift pile structure of this utility model.

[0017] In the diagram: 1. Column; 11. Connecting plate; 111. First connecting hole; 12. Support column; 121. First support ring; 13. Guide hole; 14. Connecting bolt; 15. First limiting ring; 141. First through hole; 142. External thread; 2. Support rod; 3. Base; 31. Connecting pile; 311. Second through hole; 312. Internal thread; 32. Second support ring; 33. Fixing hole; 34. Second limiting ring; 4. Anti-pull-out pile; 41. Receiving groove; 42. Tip; 43. Limiting block; 5. Anti-reverse assembly; 51. Wedge block; 52. Rotating shaft; 6. Reinforcing rib. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Example, refer to Figure 1 - Figure 7A wind-resistant and pull-out fixing device for photovoltaic panels includes a base 3 for fixed connection with a concrete base to support a column 1, and a photovoltaic panel main structure installed on the column 1. A connecting pile 31 is provided at the top center of the base 3, and the column 1 is installed in the connecting pile 31. The column 1 includes a support column 12 fixedly connected to the connecting pile 31 and a connecting plate 11 installed at the top of the support column 12 for connecting the photovoltaic panel. The column 1 is provided with a guide hole 13 along the central axis of the support column 12. The guide hole 13 passes through the connecting plate 11 and the support column 12 from top to bottom. A pull-out pile 4 is slidably installed in the guide hole 13. One end of the pull-out pile 4 moves through the base 3 and connects to the ground. The outer surface of the pull-out pile 4 is provided with several anti-backward components 5. By embedding into the deep soil layer, the pull-out resistance of the base 3 is improved, thereby distributing the local stress on the connection structure between the base 3 and the concrete base. A support rod is installed between the base 3 and the support column 12 to improve the wind resistance of the overall structure and make the overall structure more resistant to overturning.

[0021] Furthermore, a reinforcing rib 6 is connected between the bottom end face of the connecting plate 11 and the support column 12. The four corners of the connecting plate 11 are provided with first connecting holes 111 that penetrate the connecting plate 11. In use, the reinforcing rib 6 enhances the connection strength between the connecting plate 11 and the support column 12. The first connecting holes 111 at the four corners of the connecting plate 11 are used to fix and install the photovoltaic panel module.

[0022] Furthermore, the base 3 has fixing holes 33 at its four corners, and several second support rings 32 are provided on the base 3. Several second support rings 32 are also provided on the outer periphery of the support column 12. The several second support rings 32 correspond to several first support rings 121 respectively. A support rod 2 is connected between the corresponding first support ring 121 and the second support ring 32. In use, a bolt is provided in the fixing hole 33, and the bolt body passes through the fixing hole 33 and is fixedly connected to the ground. The support rod 2 is set between the second support ring 32 and the first support ring 121 to form a diagonal tension structure, which converts the bending moment load borne by the column 1 into the base 3. Under pressure, when strong winds act on the photovoltaic panel, the main body of the photovoltaic panel is subjected to horizontal thrust and bending moment due to the strong wind. One end of the support rod 2 in the inclined structure is connected to the support rod 2, and the other end is connected diagonally downward to the outer edge of the base 3. The lateral displacement tendency of the main body of the photovoltaic panel is fixed by the axial tension of the support rod 2. Due to the interaction of forces, the vertical component of the axial tension of the support rod 2 is directly downward, pressing against the base 3, converting the bending moment of the main body of the photovoltaic panel and the column 1 into additional downward pressure on the base 3, making the connection structure between the base 3 and the concrete base more stable, thereby improving the overall anti-overturning ability.

[0023] Furthermore, the connecting pile 31 has a second connecting hole inside, and the second connecting hole has an internal thread 312 inside. The bottom end of the support column 12 is provided with a connecting bolt 14. The outer wall of the support column 12 is provided with an external thread 142 that meshes with the internal thread 312. A second limiting ring 34 is provided between the connecting pile 31 and the base 3. The bottom wall of the connecting bolt 14 and the top wall of the second limiting ring 34 move against each other. In use, the connecting pile 31 and the support column 12 are connected by threads, making the installation more flexible. The bottom of the connecting pile 31 has a second limiting ring 34, which is used to limit the downward screwing depth of the connecting bolt 14 to ensure that the support column 12 is accurately installed in place.

[0024] Furthermore, the connecting bolt 14 has a first through hole 141 along its central axis, and the base 3 has a second through hole 311. The second through hole 311 is coaxial with the connecting pile 31. The first through hole 141 and the second through hole 311 have the same diameter and are connected. In use, the first through hole 141 of the connecting bolt 14 and the second through hole 311 of the base 3 are coaxial and have the same diameter, thus forming a vertical guide channel for the pull-out pile 4, preventing the pull-out pile 4 from deflecting and getting stuck when inserted.

[0025] Furthermore, the first through hole 141 and the second through hole 311 are slidably connected to the tension pile 4, so that the depth of the tension pile 4 inserted into the soil layer can be flexibly adjusted according to the softness and hardness of the soil layer.

[0026] Furthermore, a first limiting ring 15 is provided between the connecting bolt 14 and the support column 12. A limiting block 43 is connected to the top of the tension pile 4. The bottom wall of the limiting block 43 moves against the top wall of the first limiting ring 15. A pointed tip 42 is provided at the bottom of the tension pile 4. The limiting block 43 is used to slide with the guide hole 13, so that the tension pile 4 moves in the axial direction of the guide hole 13 when inserted. One end of the bottom of the limiting block 43 cooperates with the first limiting ring 15 to abut against each other, thereby limiting the maximum insertion depth of the tension pile 4. The pointed tip 42 at the bottom of the tension pile 4 is used to reduce the force-bearing area when the tension pile 4 is inserted, thereby reducing the resistance encountered when inserted into the soil layer.

[0027] Furthermore, the outer wall of the tension pile 4 is provided with several receiving grooves 41, and several anti-retraction components 5 are respectively arranged in several receiving grooves 41. When in use, the anti-retraction components 5 are embedded in the receiving grooves 41. When inserted, they are pushed by the reverse action of the soil and concrete layer to fit tightly with the receiving grooves 41, thereby maintaining the flatness of the outer surface of the tension pile 4 and facilitating the insertion of the tension pile 4 into the soil layer.

[0028] Furthermore, the anti-pull-out component 5 includes a wedge 51, with a rotating shaft 52 connected to one bottom end of the wedge 51. The two ends of the rotating shaft 52 pass through the opposite side walls of the wedge 51 and are rotatably connected to the corresponding side walls of the receiving groove 41. The wedge 51 can rotate unidirectionally through the rotating shaft 52, retracting when inserted downwards and unfolding when pulled upwards, thereby abutting against the soil or concrete layer to form a mechanical locking structure, increasing resistance, and thus improving pull-out resistance.

[0029] Furthermore, in the vertical direction, the distance between the end face of the receiving groove 41 relative to the wedge 51 and the central axis of the pull-out pile 4 gradually decreases from top to bottom. During use, this causes the wedge 51 to tend to move around the axis 52 away from the central axis of the pull-out pile 4. Thus, after being inserted into the ground, the wedge 51 unfolds around the axis 52 and abuts against the soil, improving the pull-out resistance effect.

[0030] Working Principle: During installation, the foundation pit for the base 3 is first excavated and a concrete foundation is poured. Reference holes corresponding to the fixing holes 33 and the tension piles 4 are pre-drilled in the concrete layer for fixing the base 3 and inserting the tension piles 4, respectively. After the base 3 is installed, the support column 12 is installed in the connecting pile 31. A support rod 2 is installed between the support column 12 and the base 3, forming a diagonal support structure between the base 3 and the support column 12, enhancing the overall wind resistance and tensile strength of the device. The tension piles 4 are then placed in the guide hole 13 and driven into the soil layer using a hydraulic pile driver or vibratory hammer. During the upward pulling process after the tension piles 4 are inserted into the soil layer, displacement occurs, causing the surface of the tension piles to... The gap between the wedge 51 and the soil or concrete layer allows the wedge 51 to rotate and unfold around the pivot 52 under the action of the inclined end face of the receiving groove 41, and abut against the soil or concrete layer to form a mechanical locking structure, thereby playing a role in resisting pull-out. This distributes the local pressure on the connection structure between the base 3 and the concrete base in strong wind conditions, preventing the concrete layer from being damaged or peeled off due to stress, which would cause the connection structure between the base 3 and the concrete base to loosen. A connecting plate 11 is installed at the top of the support column 12, and the connection strength between the support column 12 and the connecting plate 11 is enhanced by the reinforcing rib 6. The four corners of the connecting plate 11 are provided with first connecting holes 111 for installing photovoltaic panel modules.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A windproof and pull-out resistant fixing device for photovoltaic panels, comprising a base (3), characterized in that, The base (3) has a connecting pile (31) at the top center. A column (1) is installed in the connecting pile (31). The column (1) includes a support column (12) fixedly connected to the connecting pile (31) and a connecting plate (11) installed at the top of the support column (12). The column (1) has a guide hole (13) along the central axis of the support column (12). The guide hole (13) passes through the connecting plate (11) and the support column (12) from top to bottom. An anti-pull pile (4) is slidably installed in the guide hole (13). One end of the anti-pull pile (4) moves through the base (3) and connects to the ground. The outer surface of the anti-pull pile (4) is provided with several anti-reverse components (5). A support rod is installed between the base (3) and the support column (12).

2. The windproof and pull-out-resistant fixing device for photovoltaic panels according to claim 1, characterized in that, A reinforcing rib (6) is connected between the bottom end face of the connecting plate (11) and the support column (12), and the four corners of the connecting plate (11) are provided with a first connecting hole (111) that penetrates the connecting plate (11).

3. The windproof and pull-out-resistant fixing device for photovoltaic panels according to claim 1, characterized in that, The base (3) has fixing holes (33) through the four corners of the base (3), and the base (3) has several second support rings (32). The outer periphery of the support column (12) has several first support rings (121) corresponding to the several second support rings (32). The corresponding first support rings (121) and second support rings (32) are connected by support rods (2).

4. The windproof and pull-out-resistant fixing device for photovoltaic panels according to claim 1, characterized in that, The connecting pile (31) has a second connecting hole inside, and the second connecting hole has an internal thread (312). The bottom end of the support column (12) is provided with a connecting bolt (14). The outer wall of the support column (12) is provided with an external thread (142) that meshes with the internal thread (312). A second limiting ring (34) is provided between the connecting pile (31) and the base (3). The bottom wall of the connecting bolt (14) and the top wall of the second limiting ring (34) move against each other.

5. A windproof and pull-out resistant fixing device for photovoltaic panels according to claim 4, characterized in that, The connecting bolt (14) has a first through hole (141) along its central axis inside, and the base (3) has a second through hole (311). The second through hole (311) is coaxial with the connecting pile (31), and the first through hole (141) and the second through hole (311) have the same diameter and are connected.

6. A windproof and pull-out resistant fixing device for photovoltaic panels according to claim 5, characterized in that, The first through hole (141) and the second through hole (311) are slidably connected to the pull-out pile (4).

7. A windproof and pull-out resistant fixing device for photovoltaic panels according to claim 5, characterized in that, A first limiting ring (15) is provided between the connecting bolt (14) and the support column (12). A limiting block (43) is connected to the top of the anti-pull pile (4). The bottom wall of the limiting block (43) and the top wall of the first limiting ring (15) move against each other. A pointed tip (42) is provided at the bottom of the anti-pull pile (4).

8. The windproof and pull-out-resistant fixing device for photovoltaic panels according to claim 1, characterized in that, The outer wall of the anti-pull pile (4) is provided with several receiving grooves (41), and several anti-reverse components (5) are respectively arranged in several receiving grooves (41).

9. A windproof and pull-out resistant fixing device for photovoltaic panels according to claim 8, characterized in that, The anti-reverse assembly (5) includes a wedge (51), one end of which is connected to a rotating shaft (52). The two ends of the rotating shaft (52) pass through the opposite sidewalls of the wedge (51) and are rotatably connected to the corresponding sidewalls of the receiving groove (41).

10. A windproof and pull-out resistant fixing device for photovoltaic panels according to claim 9, characterized in that, In the vertical direction, the distance between the end face of the receiving groove (41) relative to the wedge (51) and the central axis of the pull-out pile (4) gradually decreases from top to bottom.

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