An isolation protection mechanism for a photovoltaic power generation grid-connected box

Abstract

This utility model discloses an isolation and protection mechanism for a photovoltaic power generation grid-connected box, belonging to the technical field of isolation and protection mechanisms. It includes a column with several sets of hanging rods mounted on it; an isolation plate suspended from the hanging rods by hooks; and a locking assembly for fixing the four corners of the isolation plate to the column. A ground-inserted column base is fixedly provided at the bottom of the column. The key technical points are: the isolation plate is suspended from the hanging rods by hooks, and under the weight of the isolation plate, the hooks can tightly engage with the hanging rods, ensuring the stability of the connection. The assembly process is simple and easy, significantly improving assembly efficiency. Simultaneously, the locking assembly can fix the four corners of the isolation plate to the column, and external personnel cannot release the locking effect of the locking assembly, preventing the isolation plate from being removed from the hanging rods, thus ensuring the overall mechanism can continuously provide isolation and protection.

Description

Technical Field

[0001] This utility model relates to the technical field of isolation and protection mechanisms, specifically an isolation and protection mechanism for photovoltaic power generation grid-connected boxes. Background Technology

[0002] Outdoor photovoltaic (PV) grid-connected boxes typically require external safety barriers to prevent electric shock. This is both a necessity for safety and in accordance with relevant regulations and standards. Because PV grid-connected boxes connect high-voltage direct current (PV module output) and alternating current (grid-connected side), without physical isolation, personnel could be electrocuted by accidentally touching live parts or due to equipment malfunctions (such as leakage). For example, during grid outage maintenance, if the PV system is still supplying power, maintenance personnel might mistakenly believe there is no power and be electrocuted. Safety barriers physically separate personnel from live areas, significantly reducing the risk of electric shock.

[0003] Utility model patent CN221256385U discloses an isolation net, the structure of which includes multiple sets of columns, a first partition net and a second partition net. The bottom of the two sets of columns is provided with a base for stabilizing the columns. The sides of the columns have multiple mounting holes located in the same plane. The first partition net and the second partition net are set between the two columns and are connected by a rotating cylinder. In use, the columns are first fixed, the first partition net and the second partition net are unfolded, the first connecting rod, the second connecting rod and the third connecting rod are aligned with the mounting holes, pushed into the mounting holes and then slid down along the groove direction of the mounting holes to the bottom and be fixed. When removing, the first partition net and the second partition net can be removed simply by pushing the handle upwards. The installation and disassembly are convenient and save installation time.

[0004] While the aforementioned device facilitates quick installation and disassembly of the grid-connected enclosure, the lack of limiting and fixing measures means that when the enclosure is installed by inserting the connecting rod into the installation opening, its own weight is used to prevent the connecting rod from coming out of the installation opening. Therefore, even if it is located outside the enclosure, an upward pulling force can still be applied to pull the connecting rod out of the installation opening, thus completing the disassembly of the enclosure. This renders the enclosure ineffective in providing a proper isolation function. Furthermore, since the enclosure is typically used outdoors, the aforementioned utility model requires the excavation and compaction of a foundation pit with dimensions very similar to the base to ensure stability after the base is embedded. The aforementioned installation scheme is difficult to implement and has high requirements for soil quality. Therefore, to address these issues, an isolation and protection mechanism for photovoltaic power generation grid-connected boxes is proposed. Utility Model Content

[0005] To address the technical problems in comparative technologies, such as the ability to easily and directly remove the isolation net from the outside, resulting in the loss of its isolation and protection effect, and the difficulty and limitations in implementing the fixing measures for the columns, this utility model provides an isolation and protection mechanism for photovoltaic power generation grid-connected boxes.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] An isolation and protection mechanism for a photovoltaic power generation grid-connected box includes a column on which several sets of hanging rods are installed, each set of hanging rods including two parallel hanging rods; an isolation plate with two rows of fasteners fixedly installed on its back, the isolation plate being suspended from the hanging rods by the fasteners; and a locking assembly for fixing the four corners of the isolation plate to the column; wherein, a ground-inserted column base is fixedly provided at the bottom of the column, and when the column is installed, the ground-inserted column base is inserted into the excavated foundation pit, and concrete is poured into the gap between the ground-inserted column base and the foundation pit.

[0008] In one possible implementation, the locking assembly includes an overlapping block mounted on the column and an overlapping platform fixedly disposed on the back of the isolation plate. After the isolation plate is installed, the overlapping block and the overlapping platform fit together and are fixedly connected by a connecting screw.

[0009] In one possible implementation, the fastener includes an L-shaped buckle plate whose size matches that of the hanging rod, and when the partition plate is attached to the hanging rod, the L-shaped buckle plate is attached to the upper end face and the rear end face of the hanging rod.

[0010] In one possible implementation, a connecting plate is fixedly connected to the end of the L-shaped buckle plate, and an installation slot is provided on the connecting plate. The hook fastener also includes an installation protrusion fixedly disposed on the back of the isolation plate. The connecting plate is snapped onto the installation protrusion through the installation slot, and a locking wheel is threadedly connected to the installation protrusion.

[0011] In one possible implementation, the ground-inserting column base includes a base plate, with a base cylinder and a ground-inserting cone fixedly disposed at its upper and lower ends, respectively, and a hammering plate fixedly disposed at the top of the base cylinder.

[0012] In one possible implementation, the outer wall of the base cylinder is welded with a plurality of skeleton plates arranged in a circular array, the upper and lower ends of which are respectively welded to the hammer plate and the base plate.

[0013] In one possible implementation, the bottom end of the column is fixedly connected to a plug-in column head, which is inserted into the base cylinder and connected thereto. After the column is installed, the plug-in column head is welded to the hammer plate.

[0014] In one possible implementation, both ends of the hanging rod are fixedly connected to overlapping end plates, the outer end face of which has a groove matching the column, and the overlapping end plates are fixedly connected to the column by bolts.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] After the columns are fixed and installed, several sets of hanging rods are installed in between. Then, the partition plate can be suspended on the hanging rods by the hook fasteners. Under the gravity of the partition plate, the hook fasteners can be tightly engaged with the hanging rods to ensure the stability of the connection. The above assembly process is simple and easy to carry out and can significantly improve the assembly efficiency.

[0017] In order to prevent the isolation panel from being disassembled outside the isolation and protection mechanism, a locking component is also provided in the mechanism. This component can fix the four corners of the isolation panel to the column. The locking component is located inside the isolation and protection mechanism, so that external personnel cannot release the locking effect of the locking component and therefore cannot remove the isolation panel from the hanging rod. This ensures that the mechanism can continue to play its isolation and protection role.

[0018] Before installing the column, a foundation pit with no strict size requirements is excavated. The ground-mounted column base is inserted into the bottom of the foundation pit through the ground-mounted cone fixed at its bottom end, thus completing the initial fixation of the ground-mounted column base. Then, concrete is poured into the foundation pit to connect the ground-mounted column base to the foundation pit as one unit, thereby enabling the column to maintain stability after installation. At the same time, the above method makes the overall installation and pouring construction of the ground-mounted column base simple and efficient. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation structure of the isolation plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the ground-inserting column base structure of this utility model.

[0024] In the diagram: 1. Column; 11. Inserted column head; 2. Ground-mounted column base; 21. Base plate; 22. Base cylinder; 23. Ground-mounted cone head; 24. Hammering plate; 25. Frame plate; 3. Hanging rod; 31. Overlap end plate; 4. Isolation plate; 5. Hanging fastener; 51. L-shaped buckle plate; 52. Connecting plate; 53. Mounting slot; 54. Mounting protrusion; 55. Locking wheel; 6. Locking assembly; 61. Overlap block; 62. Overlap platform; 63. Connecting screw. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 - Figure 2 As shown, this embodiment provides an isolation and protection mechanism for a photovoltaic power generation grid-connected box, including a column 1 on which several sets of hanging rods 3 are installed, each set of hanging rods 3 including two parallel hanging rods 3; an isolation plate 4 on which two rows of fasteners 5 are fixedly installed on the back, and the isolation plate 4 is suspended on the hanging rods 3 by the fasteners 5; and a locking assembly 6, which is used to fix the four corners of the isolation plate 4 to the column 1.

[0027] Based on the above structural scheme, the isolation plate 4 can be suspended on the hanging rod 3 by the hook fastener 5. Under the gravity of the isolation plate 4, the hook fastener 5 can be tightly engaged with the hanging rod 3 to ensure the stability of the connection. The above assembly process is simple and easy to carry out, which can significantly improve the assembly efficiency. At the same time, in order to prevent the isolation plate 4 from being disassembled outside the isolation and protection mechanism, a locking component 6 is also provided in the mechanism. It can fix the four corners of the isolation plate 4 to the column 1. The locking component 6 is located inside the isolation and protection mechanism, so that external personnel cannot release the locking effect of the locking component 6, and thus cannot remove the isolation plate 4 from the hanging rod 3, so that the mechanism as a whole can continue to play an isolation and protection role.

[0028] Among them, such as Figure 3 As shown, the locking assembly 6 includes an overlapping block 61 mounted on the column 1 and an overlapping platform 62 fixedly mounted on the back of the isolation plate 4. After the isolation plate 4 is installed, the overlapping block 61 and the overlapping platform 62 fit together and are fixedly connected by a connecting screw 63. Based on the above structural scheme, after the isolation plate 4 is installed, the overlapping block 61 and the overlapping platform 62 can be fixedly connected by the connecting screw 63, thereby fixing the isolation plate 4 and the column 1 together as one unit, so that personnel outside the isolation protection mechanism cannot remove the isolation plate 4.

[0029] The fastener 5 includes an L-shaped buckle plate 51, the size of which matches the size of the hanging rod 3. When the partition plate 4 is attached to the hanging rod 3, the L-shaped buckle plate 51 is attached to the upper end face and the rear end face of the hanging rod 3. The above structural solution can achieve a tight engagement with the hanging rod 3 through the L-shaped buckle plate 51, thereby completing the fixed suspension of the partition plate 4.

[0030] In the above solution, since the L-shaped buckle 51 is prone to deformation or breakage, it needs to be easy to disassemble and replace so that the undamaged parts of the isolation and protection mechanism can be reused. Therefore, if Figure 3 As shown, the L-shaped buckle plate 51 is fixedly connected to a connecting plate 52 at its end, and a mounting slot 53 is provided on it. The hook fastener 5 also includes a mounting protrusion 54 fixedly disposed on the back of the isolation plate 4. The connecting plate 52 is snapped onto the mounting protrusion 54 through the mounting slot 53, and a locking wheel 55 is threaded onto the mounting protrusion 54. The above structural solution can complete the snap-fit ​​installation of the hook fastener 5 by snapping the mounting slot 53 into the mounting protrusion 54. Then, tighten the locking wheel 55 to apply a clamping force to prevent the connecting plate 52 from falling off the mounting protrusion 54.

[0031] To improve the stability of the column 1 installation, a ground-inserting column base 2 is fixedly installed at the bottom of the column 1, such as... Figure 4 As shown, the ground-inserted column base 2 includes a base plate 21, with a base cylinder 22 and a ground-inserting cone 23 fixedly installed at its upper and lower ends, respectively. A hammering plate 24 is fixedly installed at the top of the base cylinder 22. When installing the ground-inserted column base 2, the ground-inserting cone 23 fixed at its bottom end is inserted into the bottom of the foundation pit. Then, the ground-inserted column base 2 is subjected to downward pressure by hammering the hammering plate 24, so that it can be fully inserted into the bottom of the foundation pit until the base plate 21 is in contact with the bottom of the foundation pit. The ground-inserting cone 23 inserted into the ground can provide stable support and pull-out resistance, thereby improving the overall stability of the ground-inserted column base 2. Finally, concrete is poured into the foundation pit to connect the ground-inserted column base 2 and the foundation pit into one unit, so that the column 1 can maintain stability after installation. At the same time, the above scheme can make the overall installation and pouring construction of the ground-inserted column base 2 simple and efficient.

[0032] Based on the above structural scheme, in order to complete the connection between the column 1 and the ground-inserted column base 2, the bottom end of the column 1 is fixedly connected to the plug-in column head 11, which is inserted into the base cylinder 22 and connected to it. After the column 1 is installed, the plug-in column head 11 is welded to the hammer plate 24.

[0033] In addition, to enhance the overall connection strength between the ground-mounted column base 2 and the concrete, such as Figure 4As shown, the outer wall of the base cylinder 22 is welded with several skeleton plates 25 arranged in a circular array. The upper and lower ends of the skeleton plates 25 are welded to the hammer plate 24 and the base plate 21, respectively. The skeleton plates 25 can significantly increase the contact area with the concrete, thereby significantly improving the connection strength between the ground-inserted column base 2 and the concrete.

[0034] like Figure 3 As shown, both ends of the hanging rod 3 are fixedly connected with overlapping end plates 31, and the outer end face of the plate is provided with a groove that matches the column 1. The overlapping end plates 31 and the column 1 are fixedly connected by bolts. The above structural scheme can complete the detachable connection between the hanging rod 3 and the column 1.

[0035] The working principle and usage process of this utility model:

[0036] First, the fixed installation of the ground-mounted column base 2 needs to be completed. When installing the ground-mounted column base 2, the ground-mounted cone 23 fixed at its bottom end is inserted into the bottom of the foundation pit. Then, the ground-mounted column base 2 is subjected to downward pressure by hammering the hammer plate 24, so that it can be fully inserted into the bottom of the foundation pit until the base plate 21 is in contact with the bottom of the foundation pit. The ground-mounted cone 23 inserted into the ground can provide stable support and pull-out resistance, thereby improving the overall stability of the ground-mounted column base 2. Finally, concrete is poured into the foundation pit to connect the ground-mounted column base 2 and the foundation pit into one body, so that the column 1 can maintain stability after installation. At the same time, the above scheme makes the overall installation and pouring construction of the ground-mounted column base 2 simple and efficient.

[0037] Then, the plug-in column head 11, which is fixedly connected to the bottom of the column 1, is inserted into the base cylinder 22 and connected to it. After the column 1 is installed, the plug-in column head 11 is welded to the hammer plate 24 to complete the overall fixed connection between the column 1 and the ground-inserted column base 2.

[0038] When installing the isolation panel 4, it can be suspended on the hanging rod 3 by the hook fastener 5. Under the weight of the isolation panel 4, the hook fastener 5 can be tightly engaged with the hanging rod 3 to ensure the stability of the connection. The above assembly process is simple and easy to carry out, which can significantly improve the assembly efficiency. At the same time, in order to prevent the isolation panel 4 from being disassembled outside the isolation and protection mechanism, a locking component 6 is also provided in the mechanism. It can fix the four corners of the isolation panel 4 to the column 1. The locking component 6 is located inside the isolation and protection mechanism, so that external personnel cannot release the locking effect of the locking component 6, and thus cannot remove the isolation panel 4 from the hanging rod 3, so that the mechanism can continue to play an isolation and protection role.

[0039] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An isolation and protection mechanism for a photovoltaic power generation grid-connected box, characterized in that, include: A column (1) is provided with several sets of hanging rods (3), each set of hanging rods (3) includes two parallel hanging rods (3); The isolation panel (4) has two rows of hooks (5) fixedly installed on its back. The isolation panel (4) is suspended on the hanging rod (3) by the hooks (5). Locking assembly (6) is used to secure the four corners of the isolation plate (4) to the column (1); The column (1) is fixedly provided with a ground-inserted column base (2) at its bottom end. When the column (1) is installed, the ground-inserted column base (2) is inserted into the excavated foundation pit, and concrete is poured into the gap between the ground-inserted column base (2) and the foundation pit.

2. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 1, characterized in that: The locking assembly (6) includes an overlap block (61) installed on the column (1) and an overlap platform (62) fixedly installed on the back of the isolation plate (4). After the isolation plate (4) is installed, the overlap block (61) and the overlap platform (62) fit together and are fixedly connected by a connecting screw (63).

3. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 1, characterized in that: The hook fastener (5) includes an L-shaped buckle plate (51) whose size matches that of the hanging rod (3). When the partition plate (4) is attached to the hanging rod (3), the L-shaped buckle plate (51) is attached to the upper end face and the rear end face of the hanging rod (3).

4. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 3, characterized in that: The L-shaped buckle (51) is fixedly connected to a connecting plate (52) at its end, and an installation slot (53) is provided on it. The hook fastener (5) also includes an installation protrusion (54) fixedly set on the back of the isolation plate (4). The connecting plate (52) is snapped onto the installation protrusion (54) through the installation slot (53), and a locking wheel (55) is threaded onto the installation protrusion (54).

5. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 1, characterized in that: The ground-inserting column base (2) includes a base plate (21), with a base cylinder (22) and a ground-inserting cone (23) fixedly installed at its upper and lower ends, respectively, and a hammer plate (24) fixedly installed at the top of the base cylinder (22).

6. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 5, characterized in that: The outer wall of the base cylinder (22) is welded with a number of skeleton plates (25) arranged in a circular array, and the upper and lower ends of the skeleton plates (24) and the base plate (21) are respectively welded to the hammer plate (24) and the base plate (21).

7. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 5, characterized in that: The bottom end of the column (1) is fixedly connected to the plug-in column head (11), which is inserted into the base cylinder (22) and connected to it. After the column (1) is installed, the plug-in column head (11) is welded to the hammer plate (24).

8. The isolation and protection mechanism for a photovoltaic power generation grid-connected box according to claim 1, characterized in that: Both ends of the hanging rod (3) are fixedly connected with overlapping end plates (31), and the outer end face of the plate has a groove matching the column (1), and the overlapping end plates (31) and the column (1) are fixedly connected by bolts.

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