Anti-corrosion electric grounding connection device

Abstract

The invention provides an anti-corrosion power grounding connection device, and relates to the technical field of power facilities, and the grounding connection device comprises a grounding cylinder seat part, a grounding switching assembly and an outer cover cylinder assembly. The grounding switching assembly comprises a grounding hollow rod, a plurality of grounding pressed sheets arranged at one end of the grounding hollow rod, a conical sealing block arranged at the other end of the grounding hollow rod, and a grounding external connection wire penetrating through the hollow rod; and the grounding pressed sheet extends into the grounding cylinder seat to be electrically connected with the vertical grounding body. The outer cover cylinder assembly is composed of an upper cover body, a lower connecting cover and a conical cover, the lower connecting cover is in threaded connection with the bottom of the grounding cylinder base, a guide hole is formed in the center of the conical cover for a grounding external wire to penetrate through, and the inner wall of the conical cover is pressed and sealed with the conical surface of the sealing block. The structure enables the electric connection part to be located in the sealing cavity, thereby effectively preventing corrosion. During installation, the sealing block and the conical cover are pressed by pulling the grounding external wire, sealing and axial fixing are achieved at the same time, the grounding piece is prevented from loosening, and the connector has the advantages of being reliable in connection, convenient to install, suitable for severe environments and the like.

Description

Technical Field

[0001] This invention relates to the field of power facility technology, and in particular to a corrosion-resistant power grounding connection device. Background Technology

[0002] Power grounding devices are key facilities for ensuring the safe and stable operation of power systems. Their main function is to quickly conduct fault currents, lightning currents, or interference signals from electrical equipment to the ground, thereby preventing equipment damage, electric shocks, and electromagnetic interference. In fields such as power, communications, and construction, metal grounding electrodes are typically buried underground to form a grounding grid, which is then connected to the equipment casing or grounding terminal via lead wires.

[0003] Common grounding connection structures often employ bolt crimping or welding methods. These joints are constantly exposed to soil and humid air, making them susceptible to corrosion and mechanical loosening. This leads to increased grounding resistance, decreased conductivity, and even grounding failure. This problem is particularly pronounced in highly corrosive environments such as chemical plants and coastal areas. While existing technologies utilize protective covers or sealants, these are often complex, inconvenient to install, and struggle to maintain reliable electrical connections and mechanical fixation while ensuring a tight seal. Therefore, there is an urgent need for a power grounding connection device that is structurally sound, easy to install, and possesses excellent corrosion resistance and sealing performance. Summary of the Invention

[0004] The purpose of this invention is to provide a corrosion-resistant power grounding connection device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A corrosion-resistant power grounding connection device includes a grounding cylinder base component connected to a vertical grounding electrode, a grounding transition assembly connected to power equipment, and an outer cover cylinder assembly covering the outside of the grounding cylinder base component. The grounding transition assembly includes a grounding hollow rod, a sealing block, an external grounding wire, and multiple grounding pressure-bearing plates located at the ends of the grounding hollow rod. The ends of the grounding hollow rod containing the grounding pressure-bearing plates extend into the grounding cylinder base component and are electrically connected to the grounding cylinder base component through the grounding pressure-bearing plates, thereby achieving indirect connection with the vertical grounding electrode. The sealing block is located in the grounding hollow rod... The end of the rod away from the grounding pressure plate is conical in shape. One end of the grounding external wire is connected to the grounding pressure plate through the grounding hollow rod, and the other end is used to connect to the power equipment. The outer cover assembly includes an upper cover, a lower connecting cover, and a conical cover. The upper cover is installed at the opening of the grounding cylinder seat component. The lower connecting cover is rotatably installed at the lower end of the upper cover, and its lower end is threadedly connected to the bottom edge of the grounding cylinder seat component. The top of the upper cover has a conical cover, and the center of the conical cover has a guide hole for the grounding external wire to pass through. The inner wall of the conical cover can be pressed and sealed with the conical surface of the sealing block.

[0006] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative embodiment: the grounding cylinder component includes a base, an inner cylinder, and a grounding unit. The bottom of the base is connected to a vertical grounding body and fixed to the ground by grounding nails. The inner cylinder is fixed to the upper end face of the base, and its outer wall near the bottom has an external thread section that mates with the inner wall of the lower connecting cover. The grounding unit is located inside the inner cylinder, and its bottom is connected to the vertical grounding body. Multiple grounding pressure plates can be pressed onto the grounding unit to achieve indirect connection with the vertical grounding body.

[0007] In one alternative: the bottom end of the grounding hollow rod has a screw hole, the grounding unit includes a grounding plate, a stud part and multiple pressing units, the grounding plate is fixedly installed inside the inner cylinder and connected to the end of the vertical grounding body that extends into the inner cylinder, the multiple pressing units are circumferentially distributed on the upper surface of the grounding plate and can be pressed onto the grounding pressure plate by pressing down, the stud part is fixed at the center of the upper surface of the grounding plate and can cooperate with the screw hole part to achieve a tight connection with the grounding hollow rod.

[0008] In one alternative: a grounding slot is provided on the side of the grounding pressure plate near the end; the pressing unit includes a grounding guide rod, an upper spring plate, and a curved grounding pressure plate; the grounding guide rod is fixed on the grounding plate and connected to the vertical grounding body through a wire; the curved grounding pressure plate is located on the grounding guide rod and can move vertically; the upper spring plate is fixed to the top of the grounding guide rod and is connected to the curved grounding pressure plate through a compression spring.

[0009] In one alternative: a cover support plate is provided at the opening of the inner cylinder, and at least one limiting slot is provided on the cover support plate; a rubber connecting block is provided between the top of the grounding hollow rod and the sealing block, which can be compressed under pressure; and a protruding rod part is provided at the bottom of the sealing block that can be inserted into the limiting slot.

[0010] In one alternative: the upper end face of the base has multiple cover locking parts around the outer side of the inner cylinder, and multiple hook rod assemblies are provided on the outer wall of the lower connecting cover. The hook rod assembly corresponds to the cover locking part and includes a hinge seat, a hook rod and a hook head. The hinge seat is fixed on the outer wall of the lower connecting cover. One end of the hook rod is hinged to the hinge seat and the other end is connected to the hook head. The hook head can be hooked onto the cover locking part.

[0011] In one alternative embodiment: an outwardly protruding ring is provided on the outer wall of the lower connecting cover near the bottom; the hook rod is an elastic telescopic rod; the cover locking part includes an adapter seat, a clamping sleeve, a hook ring, and a self-locking pressure plate; the adapter seat is fixed to the upper end face of the base; the clamping sleeve is rotatably mounted on the adapter seat; the hook ring is fixed to the side wall of the clamping sleeve and can be engaged with the hook head; the self-locking pressure plate is fixed to the outer wall of the clamping sleeve by a pressure rod, and the self-locking pressure plate can press against the outwardly protruding ring.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects: This invention places the joint between the grounding pressure plate and the grounding cylinder base inside the grounding cylinder base, and uses an outer cover assembly to completely seal the cylinder opening, ensuring that the key electrical connection parts are in a sealed state, effectively isolating external corrosive media, and significantly improving the device's corrosion resistance and long-term operational stability. A conical sealing block is provided at the end of the grounding hollow rod, and it is pressed tightly against the inner wall of the conical cover to further prevent the intrusion of moisture and corrosive substances, enhancing the overall sealing performance. The outer cover assembly is threaded to the bottom of the grounding cylinder base via a lower connecting cover, and is pressed against the sealing block at the top via a guide hole, not only achieving axial fixation of the grounding hollow rod and preventing the grounding plate from loosening due to vibration, but also making the installation process simpler and more reliable. The external grounding wiring is led out from inside the hollow rod, resulting in a compact structure, and external pulling forces do not directly act on the electrical connection parts, improving the mechanical strength and electrical continuity of the connection. Attached Figure Description

[0013] 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. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a power grounding connection device in one embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the inner cylinder in one embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the outer casing assembly structure in one embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the grounding adapter assembly from one perspective in one embodiment of the present invention.

[0018] Figure 5This is a schematic diagram of the grounding adapter assembly from another perspective in one embodiment of the present invention.

[0019] Figure 6 This is a schematic diagram of a grounding unit structure in one embodiment of the present invention.

[0020] Figure 7 for Figure 3 Enlarged structural diagram at point A in the middle.

[0021] Reference numerals in the attached drawings: Grounding cylinder base component 100, base 110, inner cylinder part 120, grounding unit 130, grounding plate 131, stud part 132, grounding guide rod 133, upper spring plate 134, curved grounding pressure plate 135, compression spring 136, external thread section 140, cover support plate 150, limiting slot 160, grounding adapter assembly 200, grounding hollow rod 210, screw hole part 211, grounding pressure plate 220 221, 230, 240, 250, 300, 300, 310, 320, 330, 331, 340, 350, 360, 370, 400, 410, 420, 430, 431, 340, 350, 360, 370, 400, 410, 420, 430, 440, 450, 450, 460, 470, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 400, 410, 420, 430, 440, 450, 410, 420, 430, 440, 450, 410, 420, 430, 440, 450, 410, 420, 430, 440, 450, 410, 3 ...320, 330, 440, 450, 410, 320, 320, 330, 320, 330, 340, 250, Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The left, right, up, and down positions of the various components shown in the attached diagram are just one arrangement method; the specific positions should be set according to specific needs.

[0024] In one embodiment, such as Figures 1-3As shown, a corrosion-resistant power grounding connection device includes a grounding cylinder base component 100 connected to a vertical grounding body, a grounding transition assembly 200 connected to power equipment, and an outer cover cylinder assembly 300 covering the outside of the grounding cylinder base component 100. The grounding transition assembly 200 includes a grounding hollow rod 210, a sealing block 230, a grounding external wiring 250, and a plurality of grounding pressure-bearing plates 220 disposed at the ends of the grounding hollow rod 210. The ends of the grounding hollow rod 210 containing the grounding pressure-bearing plates 220 extend into the grounding cylinder base component 100 and are electrically connected to the grounding cylinder base component 100 through the grounding pressure-bearing plates 220 to achieve indirect connection with the vertical grounding body. The sealing block 230 is disposed on the grounding hollow rod 210 away from the grounding cylinder base component 100. The end of the grounding pressure plate 220 has a conical structure. One end of the grounding external wiring 250 is connected to the grounding pressure plate 220 via the grounding hollow rod 210, and the other end is used to connect to the power equipment. The outer cover assembly 300 includes an upper cover 310, a lower connecting cover 320, and a conical cover 330. The upper cover 310 covers the opening of the grounding cylinder seat component 100. The lower connecting cover 320 is rotatably mounted on the lower end of the upper cover 310, and its lower end is threadedly connected to the bottom edge of the grounding cylinder seat component 100. The top of the upper cover 310 has a conical cover 330, and the center of the conical cover 330 has a guide hole 331 for the grounding external wiring 250 to pass through. The inner wall of the conical cover 330 can be pressed and sealed with the conical surface of the sealing block 230.

[0025] In this embodiment of the invention, the joint portions of the grounding pressure plate 220 and the grounding cylinder base component 100 are both located inside the grounding cylinder base component 100, and the outer cover assembly 300 covers the opening of the grounding cylinder base component 100. Therefore, the joint portions of the grounding pressure plate 220 and the grounding cylinder base component 100 are in a sealed state, avoiding direct exposure to the outside, thus achieving corrosion protection and sealing. During installation, since the external grounding wire 250 can pass through the guide hole 331, the outer cover assembly 300 can be moved away from the sealing block 230. The operator can hold the grounding hollow rod 210 and insert the grounding pressure plate 220 into the grounding cylinder base component 100. The sealing block 230 is positioned at the opening of the grounding cylinder assembly 100. The outer cover assembly 300 is then placed over the outside of the grounding cylinder assembly 100, and the grounding external wiring 250 is pulled so that the sealing block 230 abuts against the inner side of the conical cover 330. The top of the sealing block 230 is inserted into the guide hole 331 and sealed. The outer cover assembly 300 can then press the grounding hollow rod 210 against the sealing block 230, preventing it from vibrating and causing the grounding pressure plate 220 to detach from the electrical connector of the grounding cylinder assembly 100. The entire installation is convenient.

[0026] In one embodiment, such as Figures 1-6As shown, the grounding cylinder base component 100 includes a base 110, an inner cylinder 120, and a grounding unit 130. The bottom of the base 110 is connected to a vertical grounding body and fixed to the ground by grounding nails. The inner cylinder 120 is fixed to the upper end face of the base 110, and its outer wall near the bottom has an external thread section 140 that mates with the inner wall of the lower connecting cover 320. The grounding unit 130 is located inside the inner cylinder 120, and its bottom is connected to the vertical grounding body. Multiple grounding pressure plates 220 can be pressed onto the grounding unit 130 to achieve... Indirectly connected to the vertical grounding body; in this embodiment of the invention, the external thread section 140 protrudes outward, and its outer diameter is larger than that of the inner cylinder 120, which can prevent the internal thread of the lower connecting cover 320 from contacting the outer wall of the inner cylinder 120, thereby increasing the difficulty of installing the outer cover assembly 300. The grounding unit 130 can be connected to multiple grounding pressure plates 220 simultaneously. If one grounding pressure plate 220 is loosened, the remaining grounding pressure plates 220 will always remain connected to the grounding unit 130, ensuring the practicality of the grounding connection device and reducing the frequency of maintenance.

[0027] In one embodiment, such as Figures 1-6 As shown, the grounding hollow rod 210 has a screw hole 211 at its bottom end. The grounding unit 130 includes a grounding plate 131, a stud portion 132, and multiple crimping units. The grounding plate 131 is fixedly installed inside the inner cylinder 120 and connected to the end of the vertical grounding body that extends into the inner cylinder 120. The multiple crimping units are circumferentially distributed on the upper surface of the grounding plate 131 and can be pressed onto the grounding pressure plate 220 by pressing down. The stud portion 132 is fixed to the upper end of the grounding plate 131. At the center of the surface, it can cooperate with the screw hole 211 to achieve a tight connection with the grounding hollow rod 210; in this embodiment of the invention, the stud part 132 cooperates with the screw hole 211 of the grounding hollow rod 210 to fix the position of the grounding hollow rod 210 and the grounding pressure plate 220, ensuring that the multiple grounding pressure plates 220 are aligned with the crimping unit. During installation, the grounding pressure plate 220 rotates with the grounding hollow rod 210 and rotates to the lower side of the crimping unit to achieve electrical connection.

[0028] In one embodiment, such as Figures 1-6As shown, a grounding slot 221 is provided on the side of the grounding pressure plate 220 near its end. The pressing unit includes a grounding guide rod 133, an upper spring plate 134, and a curved grounding pressure plate 135. The grounding guide rod 133 is fixed on the grounding plate 131 and connected to the vertical grounding body through a wire. The curved grounding pressure plate 135 is provided on the grounding guide rod 133 and can move vertically. The upper spring plate 134 is fixed to the top of the grounding guide rod 133 and is connected to the curved grounding pressure plate 135 through a compression spring 136. In the embodiment of the invention, when the grounding pressure plate 220 rotates with the grounding hollow rod 210, the grounding pressure plate 220 gradually moves closer to the corresponding pressing unit. Since the curved grounding pressure plate 135 is raised forward around its perimeter, the grounding pressure plate 220 is gradually placed between the curved grounding pressure plate 135 and the grounding plate 131, and the grounding bayonet 221 is locked on the grounding guide rod 133. Under the elastic force of the compression spring 136, the curved grounding pressure plate 135 is pressed on the grounding pressure plate 220, thereby realizing automatic electrical connection and a stable connection.

[0029] In one embodiment, such as Figures 1-6 As shown, a cover support plate 150 is provided at the opening of the inner cylinder 120, and at least one limiting slot 160 is provided on the cover support plate 150. A rubber connecting block is provided between the top of the grounding hollow rod 210 and the sealing block 230, which can be compressed under pressure. The bottom of the sealing block 230 is provided with a protruding rod portion 240 that can be inserted into the limiting slot 160. In this embodiment of the invention, when the sealing block 230 is inserted into the conical cover 330, the conical cover 330 can press down on the sealing block 230, the rubber connecting block retracts, the sealing block 230 moves down a small distance, and the protruding rod portion 240 moves down with the sealing block 230 and is inserted into the limiting slot 160. The limiting slot 160 can limit the rotational freedom of the protruding rod portion 240, thereby limiting the rotation of the grounding hollow rod 210, ensuring the tightness of the connection between the grounding hollow rod 210 and the grounding guide rod 133 and the electrical connection state between the grounding pressure plate 220 and the curved grounding pressure plate 135.

[0030] In one embodiment, such as Figures 1-7As shown, the upper surface of the base 110 has multiple cover locking parts 400 surrounding the outer side of the inner cylinder 120. Multiple hook rod assemblies are provided on the outer wall of the lower connecting cover 320. Each hook rod assembly corresponds to a cover locking part 400 and includes a hinge seat 350, a hook rod 360, and a hook head 370. The hinge seat 350 is fixed to the outer wall of the lower connecting cover 320. One end of the hook rod 360 is hinged to the hinge seat 350, and the other end is connected to the hook head 370. The hook head 370 can be hooked onto the cover locking part. 400; In this embodiment of the invention, before the lower connecting cover 320 is engaged with the external threaded section 140 on the outer wall of the inner cylinder 120, two of the hook rods 360 can be held as handles and a rotational force can be applied to them to drive the lower connecting cover 320 to rotate, which facilitates the installation of the lower connecting cover 320. After the lower connecting cover 320 is fastened together with the external threaded section 140, the hook head 370 is pulled and hooked onto the corresponding cover locking part 400, thereby effectively restricting the movement of the upper cover 310 and ensuring the firmness of the installation.

[0031] In one embodiment, such as Figures 1-7 As shown, the lower connecting cover 320 has an outer protruding ring 340 near the bottom on its outer wall. The hook rod 360 is an elastic telescopic rod. The cover locking part 400 includes an adapter 410, a snap-fit ​​sleeve 420, a hook ring 430, and a self-locking pressure plate 440. The adapter 410 is fixed to the upper surface of the base 110. The snap-fit ​​sleeve 420 is rotatably mounted on the adapter 410. The hook ring 430 is fixed to the side wall of the snap-fit ​​sleeve 420 and can be fastened together with the hook head 370. The self-locking pressure plate 440 is fixed to the outer wall of the snap-fit ​​sleeve 420 through a pressure rod 450. The self-locking pressure plate 440 can press against the outer protruding ring 340. In this embodiment of the invention, when the lower connecting cover 320 is not covering the outer side of the inner cylinder 120, the self-locking pressure plate 440 is located on the upper side of the adapter 410, which will not hinder the installation of the lower connecting cover 320. After the lower connecting cover 320 is connected to the inner cylinder 120, the hook head 370 hooks onto the hook ring 430. Using the contraction elasticity of the hook rod 360, the hook ring 430 rotates upward. The hook ring 430 drives the self-locking pressure plate 440 to rotate downward through the clamping sleeve 420 and presses on the outer protruding ring 340, thereby applying a downward force to the lower connecting cover 320 to achieve self-locking and prevent the lower connecting cover 320 from loosening from the external thread section 140 due to external collision.

[0032] The above embodiments provide a corrosion-resistant power grounding connection device, the working principle of which is as follows: 1. Realization of electrical connection and sealing / corrosion protection The grounding current of the power equipment is conducted through the external grounding wire 250 to the grounding hollow rod 210, and then to the multiple grounding pressure plates 220 at its end. These pressure plates extend into the grounding cylinder base component 100 and form a press-fit contact with the internal grounding unit 130. The grounding unit 130 is connected to the vertical grounding body through the grounding plate 131, thereby finally conducting the current into the earth and completing the grounding loop.

[0033] The critical electrical connection points (i.e., the junction between the grounding pressure plate 220 and the grounding unit 130) are completely enclosed within the inner cylinder 120 of the grounding cylinder base component 100. The outer cover assembly 300 is screwed onto the external threaded section 140 of the outer wall of the inner cylinder 120 via the lower connecting cover 320, completely covering the cylinder opening. The conical cover 330 and the conical surface of the sealing block 230 are then pressed and sealed, effectively isolating external air, moisture, and corrosive media, thus achieving long-term corrosion protection.

[0034] 2. Installation and Locking Process During installation, the grounding hollow rod 210, along with the grounding pressure plate 220 attached to it, is first inserted into the inner cylinder 120 of the grounding cylinder base component 100. By rotating the grounding hollow rod 210, its bottom screw hole 211 is screwed into the center of the grounding unit 130 stud portion 132 for initial fixation. During this process, the grounding pressure plate 220 is simultaneously rotated to the bottom of the crimping unit.

[0035] After the grounding pressure plate 220 is rotated into position, its locking jaw 221 will engage with the grounding guide rod 133. Under the action of the compression spring 136, the curved grounding pressure plate 135 presses down on the grounding pressure plate 220, forming a stable and low-resistance electrical connection. The parallel design of multiple grounding pressure plates 220 and the crimping unit ensures that even if a single connection point becomes loose, the overall grounding continuity can still be maintained.

[0036] The outer casing assembly 300 is fitted over the outside of the grounding hollow rod 210, and the lower connecting cover 320 is tightened with the external thread section 140. Then, the grounding external wiring 250 is pulled upwards, causing the conical surface of the sealing block 230 to press against the inner wall of the conical cover 330, forming a second seal. Simultaneously, the sealing block 230 is pressed downwards, causing its bottom protruding rod portion 240 to engage with the limiting groove 160 at the opening of the inner cylinder portion 120. This structure restricts the rotational freedom of the grounding hollow rod 210, preventing it from reversing and loosening due to vibration, ensuring a durable and stable electrical connection.

[0037] When installing the outer cover, the hook rod 360 can be held as the grounding adapter 200 as the force point to easily tighten the lower connecting cover 320; after tightening, the hook head 370 is hooked onto the hook ring 430 on the base 110.

[0038] Since the hook rod 360 is an elastic telescopic rod, its retraction force will pull the hook ring 430 upward through the hook head 370; the hook ring 430 drives the self-locking pressure plate 440 downward through the clamping sleeve 420, and finally presses it tightly against the outer protruding ring 340 of the lower connecting cover 320. This self-locking action applies a continuous axial clamping force to the lower connecting cover 320, effectively resisting the loosening of the outer cover that may be caused by external vibration or impact, and realizing mechanical self-locking.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A corrosion-resistant power grounding connection device, comprising a grounding cylinder base component connected to a vertical grounding electrode, a grounding adapter assembly connected to power equipment, and an outer cover cylinder assembly covering the outside of the grounding cylinder base component, characterized in that, The grounding adapter assembly includes a grounding hollow rod, a sealing block, a grounding external wire, and multiple grounding pressure plates located at the ends of the grounding hollow rod. The end of the grounding hollow rod containing the grounding pressure plate extends into the grounding cylinder base component and is electrically connected to the grounding cylinder base component through the grounding pressure plate, so as to achieve indirect connection with the vertical grounding body; The sealing block is located at the end of the grounding hollow rod away from the grounding pressure plate, and has a conical structure. One end of the grounding external wiring is connected to the grounding pressure plate through the grounding hollow rod, and the other end is used to connect to the power equipment. The outer cover assembly includes an upper cover, a lower connecting cover, and a conical cover. The upper cover is fitted over the opening of the grounding cylinder seat component. The lower connecting cover is rotatably mounted on the lower end of the upper cover, and its lower end is threadedly connected to the bottom edge of the grounding cylinder seat component. The top of the upper cover has a conical cover with a guide hole in the center for the grounding external wiring to pass through. The inner wall of the conical cover can press and seal against the conical surface of the sealing block.

2. The anti-corrosion power grounding connection device according to claim 1, characterized in that, The grounding cylinder component includes a base, an inner cylinder, and a grounding unit; The base is connected to the vertical grounding body at its bottom and fixed to the ground by ground nails. The inner cylinder is fixed to the upper end face of the base, and its outer wall has an external thread section near the bottom that mates with the inner wall of the lower connecting cover. The grounding unit is located inside the inner cylinder, and its bottom is connected to the vertical grounding body. Multiple grounding pressure plates can be pressed onto the grounding unit to achieve indirect connection with the vertical grounding body.

3. The anti-corrosion power grounding connection device according to claim 2, characterized in that, The grounding hollow rod has a screw hole at its bottom end, and the grounding unit includes a grounding plate, a stud part, and multiple crimping units; The grounding plate is fixedly installed inside the inner cylinder and connected to the end of the vertical grounding body that extends into the inner cylinder. Multiple pressing units are circumferentially distributed on the upper surface of the grounding plate, which can press down on the grounding pressure plate. The stud is fixed at the center of the upper surface of the grounding plate and can cooperate with the screw hole to achieve a tight connection with the grounding hollow rod.

4. The anti-corrosion power grounding connection device according to claim 3, characterized in that, The grounding pressure plate has a grounding slot near its end on its side, and the pressing unit includes a grounding guide rod, an upper spring plate, and a curved grounding pressure plate. The grounding guide rod is fixed on the grounding plate and connected to the vertical grounding body through a wire. The curved grounding pressure plate is set on the grounding guide rod and can move vertically. The upper spring plate is fixed on the top of the grounding guide rod and is connected to the curved grounding pressure plate through a compression spring.

5. The anti-corrosion power grounding connection device according to claim 2, characterized in that, A cover support plate is provided at the opening of the inner cylinder, and at least one limiting slot is provided on the cover support plate. A rubber connecting block is provided between the top of the grounding hollow rod and the sealing block, which can be compressed under pressure. A protruding rod part that can be inserted into the limiting slot is provided at the bottom of the sealing block.

6. The anti-corrosion power grounding connection device according to any one of claims 2-5, characterized in that, The upper end face of the base has multiple cover locking parts around the outer side of the inner cylinder, and multiple hook rod assemblies are provided on the outer wall of the lower connecting cover; The hook rod assembly corresponds to the cover locking part and includes a hinge seat, a hook rod and a hook head. The hinge seat is fixed on the outer wall of the lower connecting cover. One end of the hook rod is hinged to the hinge seat and the other end is connected to the hook head. The hook head can be hooked onto the cover locking part.

7. The anti-corrosion power grounding connection device according to claim 6, characterized in that, The lower connecting cover has an outward protruding ring near the bottom of its outer wall, the hook rod is an elastic telescopic rod, and the cover locking part includes an adapter, a snap sleeve, a hook ring and a self-locking pressure plate. The adapter is fixed on the upper surface of the base, the clamping sleeve is rotatably mounted on the adapter, the hook ring is fixed on the side wall of the clamping sleeve and can be fastened together with the hook head; the self-locking pressure plate is fixed together with the outer wall of the clamping sleeve through the pressure rod, and the self-locking pressure plate can press on the outer convex ring.

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