Simple lightning protection grounding electrode facilitating connection of metal shell

Abstract

This utility model patent provides a simple lightning protection grounding electrode that is easy to connect to a metal casing, belonging to the field of lightning protection technology. It includes a grounding base and a discharge rod, with the grounding base connected to the discharge rod. The discharge rod is vertically installed in the soil, and the grounding base is located on the ground. A wiring compartment includes a housing, a rotating shaft, and a torsion spring. The housing is housed within the grounding base, the rotating shaft is rotatably mounted within the housing, and the torsion spring is sleeved within the rotating shaft. Both ends of the torsion spring are fixedly connected to the inner surface of the rotating shaft and the upper and lower end faces of the housing. A connecting wire passes through the side wall of the housing and is wound around and fixedly mounted on the rotating shaft. A wiring terminal includes a port and an interface plate. This application can solve the problem of low grounding discharge efficiency in simple devices.

Description

Technical Field

[0001] This utility model patent relates to the field of lightning protection technology, specifically to a simple lightning protection grounding electrode that is easy to connect to a metal casing. Background Technology

[0002] In the field of lightning protection technology, the lightning protection grounding electrode is a core component for lightning disaster protection. Its core function is to establish a low-impedance path to quickly conduct the large amount of charge generated after lightning strikes equipment or buildings to the ground, so as to avoid the accumulation of charge that could cause equipment burnout, circuit breakdown, or even fire, electric shock and other safety accidents. It is widely used in electrical and electronic equipment with metal casings, such as industrial control equipment, communication base station cabinets, outdoor distribution boxes, and power transformers.

[0003] With the rapid advancement of industrial automation and communication network construction in my country, the number of metal-cased devices in outdoor and semi-outdoor scenarios has surged. The three core requirements for lightning protection grounding electrodes—"convenient installation," "efficient discharge," and "long-term reliability"—are becoming increasingly urgent. However, existing lightning protection grounding electrode technologies still have many shortcomings that need to be addressed in practical applications.

[0004] Existing simple lightning protection grounding electrodes suffer from shortcomings in terms of ease of metal casing connection, grounding discharge efficiency, insulation protection performance, and scenario adaptability. These limitations fail to meet the current demands of industrial equipment and communication facilities for "efficient, safe, and convenient" lightning protection grounding. This not only hinders the safe and stable operation of equipment but also increases maintenance costs and safety risks. Therefore, developing a simple lightning protection grounding electrode that enables rapid metal casing connection, high discharge efficiency, strong insulation protection, and adaptability to multiple scenarios has become an urgent technical problem to be solved in the field of lightning protection technology. Summary of the Invention

[0005] To address some or all of the aforementioned technical problems, this application provides a simple lightning protection grounding electrode that is easy to connect to a metal casing, possessing the technical advantages of magnetic connection, low requirement for working depth, and adjustable applicable length.

[0006] A simple lightning protection grounding electrode that is easy to connect to a metal casing includes: a grounding base and a discharge rod body, wherein the grounding base is connected to the discharge rod body, the discharge rod body is vertically installed in the soil, and the grounding base is installed on the ground; a wiring compartment, the wiring compartment including a housing, a rotating shaft, and a torsion spring, the housing being disposed in the grounding base, the rotating shaft being rotatably installed in the housing, the torsion spring being sleeved in the rotating shaft, and the two ends of the torsion spring being fixedly connected to the inner side of the rotating shaft and the upper and lower end faces of the housing; a connecting wire, the connecting wire passing through the side wall of the housing, the connecting wire being wrapped around and fixedly installed on the rotating shaft; and a wiring terminal, the wiring terminal including a port and an interface plate, the connecting wire being fixedly connected to the port, the port being connected to the interface plate, the interface plate having a buckle on its edge, and a magnet being disposed inside the buckle.

[0007] By adopting the above technical solution, the interface plate of the terminal is equipped with a buckle on its edge, and a magnet is installed inside the buckle. When docking with the metal shell of the equipment, the magnetic attraction of the magnet enhances the connection stability, and docking can be completed without relying on special tools such as wrenches and screwdrivers. From the perspective of charge conduction principle, when the metal shell is energized, the charge will be transferred sequentially through the interface plate and port to the connecting wire. The connecting wire will conduct the charge to the rotating shaft in the wiring compartment. The rotating shaft is indirectly connected to the grounding base, and the charge is further transferred to the grounding base. Finally, it is conducted to the ground through the discharge rod body connected to the grounding base and vertically installed in the soil, forming a complete lightning discharge path. This achieves the effect of rapid discharge of lightning charge and avoids the accumulation of charge on the equipment shell.

[0008] The connecting wire passes through the side wall of the junction box housing and is fixedly wrapped around a rotating shaft. The rotating shaft is rotatably mounted inside the housing, and a torsion spring is fitted inside the shaft. The two ends of the torsion spring are fixedly connected to the inner side of the rotating shaft and the upper and lower end faces of the housing, respectively. When there is a difference in the installation distance between the equipment and the grounding electrode, pulling the terminal outward will cause the rotating shaft to rotate synchronously. At this time, the torsion spring is in a charged state, and the connecting wire is pulled out with the rotation of the shaft, thus extending the wire length. When the excessively long wire is not needed, the torsion spring returns to its original deformation, causing the rotating shaft to rotate in the opposite direction, and the excess connecting wire is wound back into the housing, thus shortening the wire length. This achieves the operational effect of preventing the wire from being exposed to the outside and becoming entangled, worn, or corroded by external impurities.

[0009] Optionally, the grounding base is a cylindrical structure, and the upper end face of the grounding base is provided with a groove for installing the housing. The grounding base and the housing are provided with through holes. The discharge rod passes through the through holes and slides against the lower end face of the rotating shaft. The discharge rods are distributed in a ring and multiple of them are provided. The discharge rods are made of rivet rods.

[0010] By adopting the above technical solution, the grounding base adopts a cylindrical structure. The groove on its upper surface is specifically designed for installing the junction box housing. The shape adaptability of the groove enables precise positioning of the housing and the base, preventing the housing from shifting or shaking after installation. At the same time, the cylindrical structure itself has good mechanical stability, providing stable ground support for the entire grounding electrode and reducing overall tilting caused by external impacts. The through holes inside the base serve as installation channels for the discharge rod, ensuring that the discharge rod penetrates the base vertically and extends into the soil layer, preventing tilting during installation and ensuring vertical contact between the discharge rod and the soil.

[0011] Optionally, the outer surface of the grounding base is wrapped with an insulating rubber layer, and the grounding depth of the lower end face of the grounding base is greater than 20 cm.

[0012] Optionally, the housing includes a bottom shell and an end cap. The bottom shell has a cylindrical structure. The side of the end cap is rotatably connected to the bottom shell shaft. Corresponding surfaces of the end cap and the bottom shell are respectively provided with corresponding annular grooves and rectangular grooves. The annular grooves and the rectangular grooves are arranged with the same center. The through hole is connected to the annular groove.

[0013] By adopting the above technical solution, the housing consists of a bottom shell and end caps. The bottom shell is a cylindrical structure that can accommodate internal components such as shafts and torsion springs. The side of the end caps is rotatably connected to the bottom shell via a shaft. When it is necessary to inspect or adjust components such as shafts, torsion springs, and electrical wires inside the housing, the end caps can be flipped upwards around the rotation axis to quickly open the housing. After inspection and maintenance, the end caps can be flipped in the opposite direction to close the housing without disassembling the entire housing. This structure avoids the cumbersome operation of traditional one-piece housings that require complete disassembly to maintain internal components, achieving convenient maintenance of internal components. At the same time, the cylindrical bottom shell can circumferentially enclose the internal components, reducing the direct intrusion of external impurities.

[0014] Both the end cap and the bottom shell have annular and rectangular grooves on their corresponding surfaces, and the two types of grooves are concentrically distributed, together forming a bidirectional positioning and constraint space for the shaft. During assembly, the upper and lower end faces of the shaft can be respectively embedded into the annular grooves on the corresponding surfaces of the end cap and the bottom shell.

[0015] Optionally, the end cap is made of insulating plastic, the power connecting wire passes through the side wall of the bottom shell, a column is provided on the inner side of the torsion spring, the two ends of the column are respectively constrained and connected to the two rectangular grooves, and the two end faces of the rotating shaft are set in the two annular grooves.

[0016] By adopting the above technical solution, an insulating plastic top cover is selected for the end cover. The core principle is to utilize the non-conductive property of the insulating plastic material to block the path of charge transfer from the inside of the shell to the outside. When lightning charge is conducted inside the shell through the connecting wire and the shaft, the insulating plastic end cover can prevent the charge from leaking to the outside through the end cover, preventing personnel from accidentally touching live parts and causing electric shock accidents when operating the end cover (such as opening and closing for maintenance). At the same time, the insulating plastic material can also isolate the corrosion of the internal components by the external humid environment and dust, and help improve the protection effect of the internal components, ultimately achieving the dual effect of "electrical safety protection + environmental protection".

[0017] A column is mounted on the inner side of the torsion spring, with both ends of the column constrained and connected to two rectangular slots. The principle is that the rectangular slots limit the column's position, fixing the circumferential position of the torsion spring. When the shaft rotates under the pull of the connecting wire, the torsion spring, fixed by the column and rectangular slots, cannot rotate synchronously with the shaft. The shaft exerts a torsional force on the torsion spring, storing its tension. When the external force is removed (e.g., when the wire does not need to be stretched), the torsion spring releases its elastic force, causing the shaft to rotate in the opposite direction to wind up the wire. Simultaneously, both ends of the shaft are positioned within two annular grooves. These grooves restrict the axial displacement of the shaft, ensuring stable rotation only along the groove's trajectory and preventing misalignment with the torsion spring and connecting wire due to shaft deviation.

[0018] Optionally, a top spring is fixedly provided on the upper end face of the discharge rod, and a base plate is fixedly provided on the upper end face of the top spring. A conductive wire is sleeved in the top spring, and the two ends of the conductive wire are respectively connected to the base plate and the discharge rod. An arc groove is provided on the upper end face of the base plate, and the arc groove slides against the rotating shaft.

[0019] By adopting the above technical solution, the top spring fixed on the upper end of the discharge rod has elastic extension and contraction characteristics. Its core function is to adapt to the position fluctuation of the discharge rod caused by soil displacement or temperature changes. When the grounding electrode is used for a long time, the soil may undergo slight displacement due to settlement and shrinkage, and the discharge rod may shift vertically or laterally with the soil. At this time, the top spring can drive the upper base plate to adjust its position synchronously through its own elastic deformation (elongation or compression), ensuring that the arc groove on the upper end of the base plate always remains in contact with the rotating shaft, avoiding gaps or separation between the two due to the displacement of the discharge rod, and ensuring the basic connection of the charge conduction path.

[0020] Optionally, the port is threadedly connected to the interface plate, the power supply wire passes through the port and fits against the interface plate, the interface plate is made of metal disc, and the buckles are distributed in a ring and multiple are provided.

[0021] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects of a simple lightning protection grounding electrode that facilitates connection to a metal casing: Metal casing offers more convenient connection and greater adaptability: The wiring terminals achieve tool-free quick connection through "multiple snaps distributed in a ring around the edge of the interface panel + snaps with built-in magnets". Combined with "threaded engagement between the port and the interface panel", it eliminates the need for special tools such as wrenches and is compatible with various metal casing shapes such as round cabinet bases and square distribution box housings. This avoids the difficulties in disassembly and poor compatibility of traditional bolt tightening / welding, while also eliminating the need for additional adapters, reducing usage costs and potential contact resistance issues.

[0022] Flexible wire extension and retraction, adaptable to multiple installation spacings: The wire is fixed around the rotating shaft, and a torsion spring is installed inside the shaft and rotated in the wiring compartment housing. Pulling the terminal outward can lengthen the wire (the torsion spring stores force). After the external force is removed, the torsion spring resets and retracts the excess wire. There is no need to adjust the equipment position or add wires. It adapts to different installation spacings and can also avoid wear and corrosion caused by exposed wires, thus extending service life.

[0023] Highly efficient and stable charge conduction, and high lightning protection reliability: Multiple discharge rods are distributed in a ring and riveted rods are used (increasing the soil contact area, reducing grounding resistance, and improving the ease of grounding). The top spring + base plate structure at the top of the rod adapts to soil displacement (ensuring that the arc groove of the base plate and the rotating shaft are in continuous contact). The conductive wire inside the top spring directly connects the base plate and the rod (constructing an independent conduction path and avoiding the interruption of conduction due to the aging of elastic components), forming a low-impedance, uninterrupted discharge path, ensuring that lightning charge is quickly and stably introduced into the ground. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale. Figure 1 This is a schematic diagram of the structure of this utility model patent; Figure 2 This is a schematic diagram of the structure of the discharge rod body of this utility model patent; Figure 3 This is a schematic diagram of the terminal block of this utility model patent; Figure 4 This is a schematic diagram of the wiring compartment of this utility model patent.

[0025] Explanation of reference numerals in the attached figures: 1. Grounding base; 2. Discharge rod body; 3. Bottom shell; 4. End cap; 5. Annular groove; 6. Rectangular groove; 7. Rotating shaft; 8. Torsion spring; 9. Connecting wire; 10. Port; 11. Interface plate; 12. Buckle; 13. Magnet; 14. Through hole; 15. Column; 16. Top spring; 17. Base plate; 18. Conductive wire; 19. Arc groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model patent clearer, the technical solutions of the embodiments of this utility model patent will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model patent, not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model patent are within the scope of protection of this utility model patent.

[0027] Referring to the accompanying drawings, this application discloses a simple lightning protection grounding electrode that is easy to connect to a metal casing.

[0028] Example 1:

[0029] First, follow the defined procedure: dig a pit and place the grounding base 1. Insert the discharge rod 2 through the through hole 14 on the grounding base 1 to fix the discharge rod 2 vertically in the soil layer, and place the grounding base 1 firmly on the ground.

[0030] A simple lightning protection grounding electrode that is easy to connect to a metal casing includes five core components: grounding base 1, discharge rod body 2, wiring compartment, power connection wire 9, and wiring terminal.

[0031] The grounding base 1 is constrained and connected to the discharge rod 2. The discharge rod 2 vertically penetrates the grounding base 1 and extends into the soil. The grounding base 1 is horizontally situated on the ground. The wiring compartment is embedded inside the grounding base 1. Its shell is fixed to the grounding base 1. A rotating shaft 7 is rotatably installed inside the shell. A torsion spring 8 is sleeved inside the rotating shaft 7. The two ends of the torsion spring 8 are fixed to the inner side of the rotating shaft 7 and the upper and lower end faces of the shell, respectively. One end of the connecting wire 9 penetrates the side wall of the shell and extends into the shell. It surrounds and is fixed to the outer periphery of the rotating shaft 7. The wiring terminal consists of a port 10 and an interface plate 11. The other end of the connecting wire 9 is fixed to the port 10. The port 10 is connected to the interface plate 11. The edge of the interface plate 11 is provided with a buckle 12. A magnet 13 is embedded in the buckle 12.

[0032] When connecting to the metal casing of the equipment, the casing is quickly secured by the magnet 13 inside the interface plate 11's latch 12. After a lightning strike, the charge is transferred through the casing to the interface plate 11, then sequentially through the port 10 and the connecting wire 9 to the rotating shaft 7, and finally through the rotating shaft 7 to the grounding base 1. The charge is then conducted to the ground by the discharge rod 2, which is perpendicular to the soil layer, forming a complete lightning protection path. When the distance between the equipment and the grounding electrode changes, pulling the terminal block rotates the rotating shaft 7, causing the torsion spring 8 to extend the conductor. After the pulling force is released, the torsion spring 8 resets, causing the rotating shaft 7 to rotate in the opposite direction, retracting the excess conductor back into the casing.

[0033] It enables tool-free, quick connection of metal casings, allows flexible extension and retraction of wires to adapt to different spacings, and provides a complete charge conduction path, solving the problems of cumbersome traditional grounding electrode connections and fixed wires, thus improving the convenience and reliability of lightning protection.

[0034] Example 2:

[0035] Furthermore, based on Example 1, the structure is optimized: The grounding base 1 adopts a cylindrical structure, and its upper end face has a groove for installing the housing. The wiring compartment housing is embedded in the groove to achieve precise positioning. Multiple through holes 14 are evenly opened in the circumferential direction inside the grounding base 1 and the housing. The discharge rod body 2 adopts a rivet rod, the number of which matches the through holes 14 and is distributed in a ring. Each discharge rod body 2 penetrates the corresponding through hole 14, the lower end is inserted into the soil layer, and the upper end slides against the lower end face of the rotating shaft 7 to ensure that the two are always in contact.

[0036] First, dig a pit and place a cylindrical grounding base 1, ensuring the lower end of the base is flush with the bottom of the pit. Then, insert the rivet-type discharge rods 2 one by one through the annularly distributed through holes 14 on the base, using the sharp ends of the rivets to quickly insert them into the soil layer, completing the installation. During charge conduction, the multiple annularly distributed discharge rods 2 increase the contact area with the soil, reducing the grounding resistance and allowing the charge transmitted by the rotating shaft 7 to disperse into the soil layer more quickly. The discharge rods 2 slide against the rotating shaft 7, allowing for slight rotation of the shaft 7.

[0037] The positioning accuracy of the grounding base 1 and the wiring compartment is improved, the rivet rod is easy to enter the ground, the ring distribution increases the ground contact area, reduces the grounding resistance, and solves the problems of low grounding efficiency and difficult installation of traditional single pole grounding.

[0038] Example 3:

[0039] In some embodiments, the structure is optimized based on the structure of Embodiment 1: The outer side of the grounding base 1 is wrapped with a complete insulating rubber layer, which covers the entire outer surface of the base with no exposed areas. When digging the pit according to the definition, the pit depth is controlled so that the lower end of the grounding base 1 is buried more than 20 cm deep, ensuring that the bottom of the base is firmly fixed in the soil layer, with only the upper end of the base and the wiring compartment exposed above the ground.

[0040] During installation, the pit depth must be greater than 20 cm to ensure the base penetrates the ground. After placing the base, backfill with soil to secure it. During use, the insulating rubber layer prevents the leakage of internal charge from the base to the outside, avoiding accidental electric shock caused by personnel touching the base. The greater than 20 cm penetration depth enhances the base's resistance to overturning by external forces, while ensuring contact between the base and deep soil to maintain grounding stability.

[0041] Example 4:

[0042] Further optimization, based on Example 2, involves an improved structure: The junction box housing includes a bottom shell 3 and an end cap 4. The bottom shell 3 is a cylindrical structure, and its outer side is fitted and fixed to the groove on the upper surface of the grounding base 1. The side of the end cap 4 is connected to the side wall of the bottom shell 3 through a rotating shaft 7, and can be rotated around the rotating shaft 7 to open and close the housing. The corresponding surfaces of the end cap 4 and the bottom shell 3 are respectively provided with two sets of opposing annular grooves 5 and rectangular grooves 6, and the annular grooves 5 and rectangular grooves 6 are concentric. The through hole 14 on the grounding base 1 is connected to the annular groove 5 of the end cap 4, and the upper end of the discharge rod 2 passes through the through hole 14 and extends into the annular groove 5. The through hole 14 penetrates the bottom shell 3.

[0043] During installation, the bottom shell 3 is fixed in the groove of the grounding base 1, and the two ends of the rotating shaft 7 are embedded in the annular groove 5 of the end cover 4 and the rectangular groove 6 of the bottom shell 3. When maintenance is required, the end cover 4 can be flipped to expose the rotating shaft 7, torsion spring 8 and other components inside the shell without disassembling the shell. During charge conduction, the upper end of the discharge rod 2 slides against the lower end face of the rotating shaft 7 through the through hole 14 and the annular groove 5 to ensure that the charge transfer is uninterrupted.

[0044] Example 5:

[0045] For example, the structure of the embodiment is optimized based on embodiment 4: The end cap 4 is made of insulating plastic and is rotatably connected to the bottom shell 3. The power connection wire 9 only passes through the side wall of the bottom shell 3 and does not contact the end cap 4. The inner side of the torsion spring 8 has an integrally formed column 15, and the two ends of the column 15 are respectively embedded in the rectangular grooves 6 of the bottom shell 3 and the end cap 4, and are constrained and fixed by the rectangular grooves 6. The upper and lower end faces of the rotating shaft 7 are respectively embedded in the annular grooves 5 of the end cap 4 and the bottom shell 3, and can rotate along the annular grooves 5.

[0046] When the charge is conducted inside the shell, the insulating plastic end cap 4 blocks the charge leakage and avoids electric shock during maintenance; the wire is fixed through the bottom shell 3 and there is no pulling loss when the end cap 4 is flipped; when the shaft 7 rotates, the torsion spring 8 cannot rotate synchronously because the column 15 is fixed by the rectangular groove 6, and the torsion spring 8 stores force or resets to drive the wire to retract and extend; the annular groove 5 restricts the axial movement of the shaft 7 to ensure stable rotation.

[0047] Example 6:

[0048] In some embodiments, the structure is optimized based on the structure of Embodiment 1: A top spring 16 is welded and fixed to the upper end face of the discharge rod body 2. A base plate 17 is welded and fixed to the upper end face of the top spring 16. A conductive wire 18 is sleeved inside the top spring 16. The two ends of the conductive wire 18 are welded to the lower end face of the base plate 17 and the upper end face of the discharge rod body 2, respectively. An arc groove 19 adapted to the outer periphery of the rotating shaft 7 is opened on the upper end face of the base plate 17. The arc groove 19 slides and abuts against the lower end face of the rotating shaft 7 to form a surface contact.

[0049] When soil subsidence or temperature changes cause the discharge rod 2 to shift, the top spring 16 drives the base plate 17 to adjust its position synchronously through its extension and contraction deformation, so that the arc groove 19 always fits the rotating shaft 7. After the charge is transferred to the base plate 17 through the rotating shaft 7, it is directly conducted to the discharge rod 2 through the conductive wire 18 inside the top spring 16, avoiding the interruption of conduction caused by the corrosion of the top spring 16, and ensuring that the charge is continuously introduced into the ground.

[0050] Example 7:

[0051] Example of an implementation: Based on Example 1, the structure is optimized as follows: Port 10 and interface plate 11 are connected by a threaded fit. Rotating port 10 can fasten or separate the two. One end of the power connecting wire 9 passes through the center hole of port 10 and extends into the connection gap between port 10 and interface plate 11, and fits against the end face of interface plate 11. Interface plate 11 is a metal disc with multiple buckles 12 evenly arranged along its circumference. Each buckle 12 has a permanent magnet embedded inside.

[0052] When connecting the device housing, the permanent magnet attracts the housing to achieve quick fixation, and the threaded fit enhances the connection stability between the port 10 and the interface plate 11; when the charge is transferred through the interface plate 11, the metal disc makes the charge evenly distributed, and the close contact wire reduces the conduction impedance, ensuring that the charge is efficiently transferred to the power connection wire 9.

[0053] In the description of this application, it should be understood that the terms "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention.

[0054] Unless otherwise specified, all structural components mentioned in this application use the common names of existing, mature products. Differences in specific models or categories do not affect the device's ability to fulfill its designed functions.

[0055] Furthermore, the terms "A," "B," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A simple lightning protection grounding electrode that is easy to connect to a metal casing, characterized in that, include: The system includes a grounding base and a discharge rod, wherein the grounding base is connected to the discharge rod, the discharge rod is vertically installed in the soil, and the grounding base is installed on the ground. The wiring compartment includes a housing, a rotating shaft, and a torsion spring. The housing is disposed in the grounding base, the rotating shaft is rotatably installed inside the housing, and the torsion spring is sleeved inside the rotating shaft. The two ends of the torsion spring are fixedly connected to the inner side of the rotating shaft and the upper and lower end faces of the housing. A power-connecting wire passes through the side wall of the housing and is wrapped around and fixedly mounted on the rotating shaft; The terminal block includes a port and an interface plate. The power supply wire is fixedly connected to the port, and the port is connected to the interface plate. A buckle is provided on the edge of the interface plate, and a magnet is provided inside the buckle.

2. The simple lightning protection grounding electrode that is easy to connect to a metal casing according to claim 1, characterized in that: The grounding base is cylindrical in shape, and the upper surface of the grounding base is provided with a groove for mounting the housing. The grounding base and the housing are provided with through holes. The discharge rod passes through the through holes and slides against the lower end face of the rotating shaft. The discharge rods are arranged in a ring and there are multiple of them. The discharge rods are made of rivet rods.

3. A simple lightning protection grounding electrode that is easy to connect to a metal casing according to claim 1, characterized in that: The outer surface of the grounding base is wrapped with an insulating rubber layer, and the grounding depth of the lower end face of the grounding base is greater than 20 cm.

4. A simple lightning protection grounding electrode that is easy to connect to a metal casing according to claim 2, characterized in that: The housing includes a bottom shell and an end cap. The bottom shell has a cylindrical structure. The side of the end cap is rotatably connected to the bottom shell shaft. Corresponding surfaces of the end cap and the bottom shell are respectively provided with corresponding annular grooves and rectangular grooves. The annular grooves and the rectangular grooves are concentric. The through hole is connected to the annular groove.

5. A simple lightning protection grounding electrode that is easy to connect to a metal casing according to claim 4, characterized in that: The end cap is made of insulating plastic. The power connecting wire passes through the side wall of the bottom shell. A column is provided on the inner side of the torsion spring. The two ends of the column are respectively constrained and connected to the two rectangular grooves. The two end faces of the rotating shaft are set in the two annular grooves.

6. A simple lightning protection grounding electrode that is easy to connect to a metal casing according to claim 1, characterized in that: A top spring is fixedly installed on the upper end face of the discharge rod, and a base plate is fixedly installed on the upper end face of the top spring. A conductive wire is sleeved in the top spring, and the two ends of the conductive wire are respectively connected to the base plate and the discharge rod. An arc groove is provided on the upper end face of the base plate, and the arc groove slides against the rotating shaft.

7. A simple lightning protection grounding electrode that is easy to connect to a metal casing according to claim 1, characterized in that: The port is threadedly connected to the interface plate, and the power supply wire passes through the port and fits against the interface plate. The interface plate is made of metal disc, and the buckles are distributed in a ring and are provided in multiples.

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