Electric power grounding protection device

Abstract

The utility model discloses an electric power grounding protection device, which relates to the technical field of electric power protection, and comprises a chassis, a plurality of fixing holes are arranged on the chassis, fixing columns are arranged in the fixing holes, each fixing column comprises an outer cylinder body and an inner cylinder body, a cone is arranged at one end of the inner cylinder body far away from a box body, and a plurality of expansion boards are arranged on the side wall of the cone. The ends, away from the box body, of the expansion plates are hinged to the side wall of the cone, and tension springs are arranged between the ends, close to the box body, of the expansion plates and the cone. Therefore, the cone facilitates the insertion of the fixing column into the soil, and the expansion plate on the cone can be opened along with the upward movement of the cone, so that the contact area between the cone and the soil is increased, the difficulty of pulling out the fixing column is increased, and the stability of the chassis is ensured.

Description

Technical Field

[0001] This utility model applies to the field of power protection technology and provides a power grounding protection device. Background Technology

[0002] Power grounding protection devices are one of the core devices to ensure the safe operation of power systems. By establishing a reliable grounding path, they can effectively discharge fault current, suppress overvoltage, and reduce the risk of electric shock.

[0003] When using it, you need to first dig a suitable trench, place the grounding electrode of the protection device in the trench, then backfill the trench, and use structures such as fiber optic cables to fix the protection device to the ground. Finally, complete the wiring process.

[0004] The existing grounding protection devices are fixed in a rather rudimentary way, which means that during strong winds, the grounding protection devices may become tilted or exposed to the outside world due to insecure fixing, leading to grounding failure. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of this utility model is to provide a power grounding protection device, which aims to solve the problems mentioned in the background.

[0006] A power grounding protection device includes a chassis with a plurality of fixing holes. A housing is mounted on the top of the chassis. The fixing holes surround the housing, and fixing posts are installed in the fixing holes. Each fixing post includes an outer cylinder and an inner cylinder. The outer cylinder surrounds the inner cylinder. A cone is provided at the end of the inner cylinder away from the housing. A handle is installed at the end of the inner cylinder away from the cone. The outer diameter of the handle is larger than the inner diameter of the outer cylinder. The base area diameter of the cone is larger than the inner diameter of the outer cylinder. An external thread is provided at the end of the inner cylinder facing the cone. An internal thread is provided inside the outer cylinder. The external thread of the inner cylinder is threadedly connected to the internal thread of the outer cylinder.

[0007] The cone has several extension plates on its side wall, which are arranged around the cone. The end of the extension plate away from the box is hinged to the side wall of the cone, and a tension spring is provided between the end of the extension plate near the box and the cone.

[0008] The cone has a limiting groove on its side wall, one end of the tension spring is hinged to the bottom of the limiting groove, and the other end of the tension spring is hinged to the extension plate.

[0009] The angle between the end of the expansion plate facing the box and the horizontal plane is α, where 10°≤a≤65°.

[0010] The inner column has a hollow cavity inside, and a number of through holes are provided on the outer wall of the inner column. One end of each through hole is connected to the hollow cavity, and the other end of each through hole is connected to the outer wall of the inner column.

[0011] The enclosure includes a door at one end and several cable inlets at the end away from the door. A fixing mechanism is provided between the cable inlets and the door. The fixing mechanism includes a first fixing block and a second fixing block. The side of the first fixing block facing the second fixing block is a first arc-shaped surface, and the side of the second fixing block facing the first fixing block is a second arc-shaped surface. The fixing mechanism also includes a drive rod and a support rod. The drive rod and the support rod are parallel. The drive rod includes a first threaded segment and a second threaded segment. Both the first and second threaded segments have external threads on their outer walls. The external threads of the first threaded segment and the second threaded segment are opposite. The first threaded segment is threadedly connected to the end of the first fixing block facing the cable inlets, and the support rod is slidably connected to the first fixing block. The second threaded segment is threadedly connected to the end of the second fixing block facing the cable inlets, and the support rod is slidably connected to the second fixing block.

[0012] The drive rod has a drive head mounted on one end and a positioning block rotatably connected to the other end. A limiting platform is installed between the positioning block and the drive head, and the drive rod is rotatably connected to the limiting platform. A first support platform is mounted on one end of the support rod, and a second support platform is mounted on the other end of the support rod.

[0013] The first fixing block has a first fixing platform installed on its side wall, and the second fixing block has a second fixing platform installed on its side wall. A fixing bolt is provided between the first fixing platform and the second fixing platform.

[0014] An integrated plate is installed on the inner wall of the enclosure, located between the inlet hole and the door. Several connecting platforms are provided on the integrated plate. A grounding electrode is provided on the side of the chassis away from the enclosure, and a power line is provided between the grounding electrode and the integrated plate.

[0015] Beneficial effects

[0016] First, the cone shape facilitates the insertion of the fixing post into the soil, and the expansion plate on the cone opens as the cone moves upward, increasing the contact area between the cone and the soil, thus increasing the difficulty of pulling out the fixing post and ensuring the stability of the base. Second, the hollow inner column facilitates the pumping of cement, drag-reducing agents, and other substances into the soil, further increasing the difficulty of pulling out the fixing post. Third, the first and second fixing blocks are used to secure the electrical wires, preventing them from detaching from the enclosure. Attached Figure Description

[0017] Figure 1This is a structural diagram of a power grounding protection device;

[0018] Figure 2 This is a top view of a power grounding protection device;

[0019] Figure 3 This is a cross-sectional view of a power grounding protection device;

[0020] Figure 4 This is a partial structural diagram of the fixed column;

[0021] Figure 5 This is a diagram showing the state of the inner column when it is pulled out.

[0022] Figure 6 This is a sectional view of a fixed column;

[0023] Figure 7 for Figure 3 A magnified view of part A in the image;

[0024] Figure 8 for Figure 6 A magnified view of part B in the image;

[0025] Figure 9 for Figure 8 A magnified view of part C.

[0026] In the diagram: 1-chassis, 2-fixing hole, 3-box body, 4-fixing column, 41-outer cylinder, 42-inner column, 43-cone, 44-handle, 45-extension plate, 46-tension spring, 47-limiting groove, 48-hollow cavity, 49-through hole, 5-door body, 6-inlet hole, 7-fixing mechanism, 71-first fixing block, 72-second fixing block, 73-first arc surface, 74-second arc surface, 75-drive rod, 751-first threaded section, 752-second threaded section, 753-drive head, 754-limiting platform, 755-positioning block, 76-support rod, 761-first support platform, 762-second support platform, 77-first fixing platform, 78-second fixing platform, 79-fixing bolt, 8-integrated plate, 81-connecting platform, 82-wire, 83-grounding electrode. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0028] Example:

[0029] like Figures 1-9As shown, a power grounding protection device includes a chassis 1 with a plurality of fixing holes 2. A housing 3 is mounted on the top of the chassis 1, and the fixing holes 2 are arranged around the housing 3. Fixing posts 4 are installed in the fixing holes 2. In use, a trench to hold the device needs to be dug beforehand, and the chassis 1 of the device is placed in the trench, then backfilled with soil. Subsequently, the fixing posts 4 are inserted into the fixing holes 2, and then inserted into the soil to complete the fixing.

[0030] like Figure 3-5 As shown, in order to facilitate the insertion of the fixing post 4 and ensure that the fixing post 4 can firmly fix the chassis 1, the fixing post 4 includes an outer cylinder 41 and an inner cylinder 42. The outer cylinder 41 is arranged around the inner cylinder 42. The inner cylinder 42 is provided with a cone 43 at the end away from the box 3. A handle 44 is installed at the end of the inner cylinder 42 away from the cone 43. The outer contour dimension of the handle 44 is larger than the inner diameter of the outer cylinder 41. The bottom area diameter of the cone 43 is larger than the inner diameter of the outer cylinder 41. The end of the inner cylinder 42 facing the cone 43 is provided with an external thread. The outer cylinder 41 is provided with an internal thread. The external thread of the inner cylinder 42 is threadedly connected to the internal thread of the outer cylinder 41. A plurality of extension plates 45 are provided on the side wall of the cone 43, and the plurality of extension plates 45 are arranged around the cone 43. The end of the extension plate 45 away from the housing 3 is hinged to the side wall of the cone 43, and a tension spring 46 is provided between the end of the extension plate 45 near the housing 3 and the cone 43.

[0031] A locking platform is provided at the end of the outer cylinder 41 away from the cone 43. The outer contour of the locking platform is larger than the size of the fixing hole 2. This design allows the fixing hole 2 to lock the locking platform, preventing the fixing post 4 from being excessively inserted into the soil. After the fixing post 4 is inserted into the soil, the inner post 42 is rotated, causing the inner post 42 to disengage from the outer cylinder 41. At the same time, a downward force is applied to the inner post 42, causing it to re-insert into the soil until the handle 44 contacts the locking platform. Because the bottom of the inner post 42 is provided with a cone 43, it is easier for the inner post 42 to be inserted into the soil. However, during the insertion process, soil will fill the space between the cone 43 and the bottom of the outer cylinder 41, increasing the contact area between the cone 43 and the soil, thereby increasing the difficulty of pulling out the inner post 42.

[0032] Because the cone 43 has an extension plate 45 installed on its side wall, the extension plate 45 will be squeezed by the soil and open during the pulling out of the inner column 42. This further increases the contact area between the cone 43 and the soil, making it more difficult to pull out the inner column 42, thus enabling the fixing column 4 to firmly fix the chassis 1.

[0033] In this design, the function of the tension spring 46 is to ensure that the extension plate 45 is tightly attached to the surface of the cone 43. This ensures that the extension plate 45 can only open when it is subjected to a downward force, thus preventing damage to the extension plate 45 caused by it being able to open at any time.

[0034] To facilitate the installation of the tension spring 46, a limiting groove 47 is provided on the side wall of the cone 43. One end of the tension spring 46 is hinged to the bottom of the limiting groove 47, and the other end of the tension spring 46 is hinged to the extension plate 45.

[0035] Preferably, the size of the limiting groove 47 is larger than the size of the extension plate 45. In use, the end of the extension plate 45 facing the cone 43 is embedded in the limiting groove 47, the purpose of which is to reduce the resistance of the inner column 42 during rotation.

[0036] like Figure 9 As shown, to facilitate the opening of the extension plate 45, the angle between the end of the extension plate 45 facing the housing 3 and the horizontal plane is α, where 10°≤α≤65°. This design causes the top of the extension plate 45 to tilt towards the cone 43, which allows the extension plate 45 to withstand greater force as it rises with the cone 43, thus facilitating the opening of the extension plate 45.

[0037] To further enhance the stability of the chassis 1, a hollow cavity 48 is provided inside the inner column 42, and several through holes 49 are provided on the outer wall of the inner column 42. One end of each through hole 49 is connected to the hollow cavity 48, and the other end of each through hole 49 is connected to the outer wall of the inner column 42. Figure 6 , Figure 8 As shown, the hollow cavity 48 in this solution is connected to the handle 44. During use, cement or drag-reducing agent is pumped into the hollow cavity 48. The cement or drag-reducing agent travels along the hollow cavity 48 to the through hole 49, and then through the through hole 49 to the space expanded by the cone 43 in the soil. After the cement or drag-reducing agent solidifies, a solidified block will be formed between the cone 43 and the outer cylinder 41. The solidified block increases the contact area between the fixed column 4 and the soil, and also increases the weight of the fixed column 4, thereby ensuring the stability of the chassis 1.

[0038] After completing the installation of chassis 1, we also need to check the wiring. Since the wires used are of different types, we need to consider how to secure them. For this reason, as follows... Figure 3 , Figure 7As shown, a door 5 is installed at one end of the housing 3. Several cable inlets 6 are provided at the end of the housing 3 away from the door 5. A fixing mechanism 7 is provided between the cable inlets 6 and the door 5. The fixing mechanism 7 includes a first fixing block 71 and a second fixing block 72. The side of the first fixing block 71 facing the second fixing block 72 is a first arc-shaped surface 73, and the side of the second fixing block 72 facing the first fixing block 71 is a second arc-shaped surface 74. The fixing mechanism 7 also includes a drive rod 75 and a support rod 76. The drive rod 75 and the support rod 76 are parallel. The movable rod 75 includes a first threaded section 751 and a second threaded section 752. Both the first threaded section 751 and the second threaded section 752 have external threads on their outer walls. The external threads of the first threaded section 751 and the second threaded section 752 are opposite. The first threaded section 751 is threadedly connected to the end of the first fixing block 71 facing the inlet hole 6, and the support rod 76 is slidably connected to the first fixing block 71. The second threaded section 752 is threadedly connected to the end of the second fixing block 72 facing the inlet hole 6, and the support rod 76 is slidably connected to the second fixing block 72.

[0039] External wires enter the housing 3 through the inlet hole 6. After the wires are connected, the drive rod 75 needs to be rotated. Since the threads on the first threaded section 751 and the second threaded section 752 have opposite directions, the first fixing block 71 and the second fixing block 72 move towards each other. During this process, the first arc-shaped surface 73 and the second arc-shaped surface 74 clamp the wires to prevent them from shifting. To ensure the smooth displacement of the first fixing block 71 and the second fixing block 72, this design introduces a support rod 76 with a smooth outer wall, and both the first and second fixing blocks are slidably connected to the support rod 76.

[0040] To facilitate the rotation of the drive rod 75, a drive head 753 is installed at one end of the drive rod 75, and a positioning block 755 is rotatably connected to the other end of the drive rod 75. A limiting platform 754 is installed between the positioning block 755 and the drive head 753, and the drive rod 75 is rotatably connected to the limiting platform 754. A first support platform 761 is installed at one end of the support rod 76, and a second support platform 762 is installed at the other end of the support rod 76. The positioning block 755 and the limiting platform 754 are used to support the drive rod 75 and prevent the drive rod 75 from being in close contact with the inner wall of the housing 3. Similarly, the first support platform 761 and the second support platform 762 are used to prevent the support rod 76 from being in close contact with the inner wall of the housing 3. To facilitate the rotation of the drive rod 75, a drive head 753 is installed at one end of the drive rod 75.

[0041] To clamp the wire, a first fixing platform 77 is installed on the side wall of the first fixing block 71, and a second fixing platform 78 is installed on the side wall of the second fixing block 72. A fixing bolt 79 is provided between the first fixing platform 77 and the second fixing platform 78. The fixing bolt 79 is used to connect the first fixing block 71 and the second fixing block 72, thereby ensuring the relative stability of the first fixing platform 77 and the second fixing platform 78. Preferably, the first fixing platform 77 is provided at both the top and bottom of the first fixing block 71, and the second fixing platform 78 is provided at both the top and bottom of the second fixing block 72.

[0042] To facilitate grounding of the electrical wires, an integrated plate 8 is installed on the inner wall of the enclosure 3. The integrated plate 8 is located between the inlet hole 6 and the door 5. Several connecting platforms 81 are provided on the integrated plate 8. A grounding electrode 83 is provided on the side of the chassis 1 away from the enclosure 3. A wire 82 is connected between the grounding electrode 83 and the integrated plate 8. In use, the grounding electrode 83 needs to be buried in the soil first, and then the chassis 1 is placed in the pre-dug trench. After the chassis 1 is fixed using the fixing posts 4, one end of the wire is connected to the connecting platform 81 on the integrated plate 8.

[0043] In summary, the advantages of this design are as follows: First, the cone 43 facilitates the insertion of the fixing post 4 into the soil, and the extension plate 45 on the cone 43 opens as the cone 43 moves upward, increasing the contact area between the cone 43 and the soil, thus increasing the difficulty of pulling out the fixing post 4 and ensuring the stability of the chassis 1. Second, the hollow inner column 42 facilitates the pumping of cement, drag-reducing agents, and other substances into the soil, further increasing the difficulty of pulling out the fixing post 4. Third, the first fixing block 71 and the second fixing block 72 are used to fix the wires, preventing them from detaching from the housing 3.

[0044] There are many other embodiments. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A power grounding protection device, comprising a chassis (1), wherein a plurality of fixing holes (2) are provided on the chassis (1), and a housing (3) is mounted on the top of the chassis (1), wherein the plurality of fixing holes (2) are arranged around the housing (3), characterized in that, A fixing post (4) is installed in the fixing hole (2). The fixing post (4) includes an outer cylinder (41) and an inner post (42). The outer cylinder (41) is arranged around the inner post (42). A cone (43) is provided at the end of the inner post (42) away from the box (3). A handle (44) is installed at the end of the inner post (42) away from the cone (43). The outer contour dimension of the handle (44) is larger than the inner diameter of the outer cylinder (41). The bottom area diameter of the cone (43) is larger than the inner diameter of the outer cylinder (41). An external thread is provided at the end of the inner post (42) facing the cone (43). An internal thread is provided inside the outer cylinder (41). The external thread of the inner post (42) is threadedly connected to the internal thread of the outer cylinder (41). A plurality of extension plates (45) are provided on the side wall of the cone (43). The plurality of extension plates (45) are arranged around the cone (43). The end of the extension plate (45) away from the box (3) is hinged to the side wall of the cone (43). A tension spring (46) is provided between the end of the extension plate (45) near the box (3) and the cone (43).

2. The power grounding protection device according to claim 1, characterized in that, The cone (43) has a limiting groove (47) on its side wall. One end of the tension spring (46) is hinged to the bottom of the limiting groove (47), and the other end of the tension spring (46) is hinged to the extension plate (45).

3. The power grounding protection device according to claim 1, characterized in that, The angle between the end of the extension plate (45) facing the box (3) and the horizontal plane is a, 10°≤a≤65°.

4. The power grounding protection device according to claim 1, characterized in that, The inner column (42) has a hollow cavity (48) inside. The outer wall of the inner column (42) has several through holes (49). One end of the through hole (49) is connected to the hollow cavity (48), and the other end of the through hole (49) is connected to the outer wall of the inner column (42).

5. The power grounding protection device according to claim 1, characterized in that, A door (5) is installed at one end of the housing (3). Several inlet holes (6) are provided at the end of the housing (3) away from the door (5). A fixing mechanism (7) is provided between the inlet holes (6) and the door (5). The fixing mechanism (7) includes a first fixing block (71) and a second fixing block (72). The side of the first fixing block (71) facing the second fixing block (72) is a first arc-shaped surface (73), and the side of the second fixing block (72) facing the first fixing block (71) is a second arc-shaped surface (74). The fixing mechanism (7) also includes a drive rod (75) and a support rod (76). The drive rod (75) and the support rod (76) are parallel. The drive rod (75) includes a first threaded section (751) and a second threaded section (752). Both the first threaded section (751) and the second threaded section (752) have external threads on their outer walls. The external threads of the first threaded section (751) are opposite to those of the second threaded section (752). The first threaded section (751) is threadedly connected to the end of the first fixing block (71) facing the inlet hole (6). The support rod (76) is slidably connected to the first fixing block (71). The second threaded section (752) is threadedly connected to the end of the second fixing block (72) facing the inlet hole (6). The support rod (76) is slidably connected to the second fixing block (72).

6. The power grounding protection device according to claim 5, characterized in that, One end of the drive rod (75) is equipped with a drive head (753), and the other end of the drive rod (75) is rotatably connected to a positioning block (755). A limiting platform (754) is installed between the positioning block (755) and the drive head (753), and the drive rod (75) is rotatably connected to the limiting platform (754). One end of the support rod (76) is equipped with a first support platform (761), and the other end of the support rod (76) is equipped with a second support platform (762).

7. The power grounding protection device according to claim 6, characterized in that, A first fixing platform (77) is installed on the side wall of the first fixing block (71), and a second fixing platform (78) is installed on the side wall of the second fixing block (72). A fixing bolt (79) is provided between the first fixing platform (77) and the second fixing platform (78).

8. The power grounding protection device according to claim 1, characterized in that, An integrated plate (8) is installed on the inner wall of the box (3). The integrated plate (8) is located between the inlet hole (6) and the door (5). Several connecting platforms (81) are provided on the integrated plate (8). A grounding electrode (83) is provided on the side of the chassis (1) away from the box (3). A power line (82) is provided between the grounding electrode (83) and the integrated plate (8).

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