Photovoltaic transformer grounding device

Abstract

The utility model discloses a photovoltaic transformer grounding device, which relates to the technical field of transformers, and comprises a grounding rod, the grounding rod is connected with a transformer body through a connecting wire, the end part of the grounding rod is provided with a fixed plate, and the inner side of the fixed plate is provided with an annular inner plate; at least three first sliding grooves are formed in the inner plate at equal intervals, and positioning mechanisms are installed in the first sliding grooves in a sliding mode. The fixing plate is installed on the grounding rod, the first sliding groove is formed in the inner plate of the fixing plate, the positioning rod is installed in the first sliding groove in a sliding mode, the fixing position is adjusted through the positioning rod, and the extending length of the inserting rod can be accurately controlled through rotation of the first lead screw, so that the inserting rod can go deep into the ground; the contact area and friction force between the grounding rod and soil are increased, so that the stability of the grounding rod in the ground is greatly improved, and the grounding rod adapts to different ground conditions.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a grounding device for a photovoltaic transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). When installing a transformer, a grounding device is usually installed underground to prevent people on the ground from getting electric shock.

[0003] According to Chinese Patent Publication No. CN221841720U, a transformer body grounding device is disclosed, including a transformer body. A support frame is connected to the lower side of the transformer body, and a casing grounding wire is connected to the lower side of the transformer body. The other end of the casing grounding wire is connected to a wiring assembly, and a moving assembly is connected to the lower side of the wiring assembly. Through the cooperation of gears, transmission wheels, and transmission gear belts, the gear rod is driven to move up and down, thereby adjusting the depth of the grounding rod inserted into the ground. The grounding rod is protected by an insulating shell and conductive anti-rust paint, reducing the contact area between the grounding rod and the underground soil and extending the service life of the grounding rod. The grounding rod can be disassembled through the cooperation of the wiring assembly, bolts, and protective door, which facilitates inspection and maintenance. At the same time, it can also replace grounding rods of different sizes to be suitable for different models of transformer bodies, saving time, effort, and costs.

[0004] Traditional grounding methods typically rely on inserting a grounding rod directly into the ground to achieve an electrical connection with the earth. However, this method has several limitations:

[0005] Due to the lack of an effective fixing mechanism, traditional grounding rods are easily affected by external factors (such as wind and vibration) and may shift or tilt, especially in soft or variable soil conditions. This not only affects the grounding effect but may also cause safety hazards. Secondly, the connection between the grounding rod and the wiring is exposed and is easily affected by environmental factors such as moisture, dust, and chemicals, which accelerates the aging and corrosion of metal parts and shortens their service life. Utility Model Content

[0006] The purpose of this invention is to provide a photovoltaic transformer grounding device that can avoid the displacement or tilting of traditional grounding rods due to external factors (such as wind and vibration).

[0007] This utility model provides a photovoltaic transformer grounding device, including a grounding rod, which is connected to the transformer body through wiring. A fixing plate is provided at the end of the grounding rod, and an annular inner plate is provided on the inner side of the fixing plate. At least three sliding grooves are equally spaced on the inner plate, and a positioning mechanism is slidably installed in the sliding groove.

[0008] Preferably, the positioning mechanism includes a positioning rod that slides in a groove, the positioning rod having an installation groove inside, and an insert rod that slides in the installation groove.

[0009] Preferably, a second lead screw is rotatably disposed in the mounting groove, the second lead screw is threadedly connected to the insertion rod, and the second lead screw is driven by a motor.

[0010] Preferably, a lead screw is rotatably mounted on the upper side of the slide groove, the lead screw is threadedly connected to the upper end of the positioning rod, and a bevel gear is connected to one end of the lead screw.

[0011] Preferably, at least three bevel gears are rotatably disposed on the inner plate, and the first bevel gear meshes with the second bevel gear.

[0012] Preferably, the upper end of the bevel gear is connected to an end gear, a rotating sleeve is rotatably disposed at the center of the inner plate, a gear ring is disposed at the lower end of the rotating sleeve, the gear ring meshes with the end gear, and multiple grooves are provided on the upper side of the rotating sleeve.

[0013] Preferably, a protective sleeve is provided on the upper side of the fixing plate, and an insert block is provided on the lower side of the protective sleeve. The insert block is inserted into the insertion hole opened on the upper side of the fixing plate.

[0014] Preferably, the protective sleeve has a notch on one side and a protrusion on the lower side, which is engaged with the groove.

[0015] Preferably, a sealing plate is provided in the notch of the protective sleeve, and a sliding plate is provided on both sides of the sealing plate, which is slidably connected to the sliding grooves opened on both sides of the notch.

[0016] Preferably, the upper end of the grounding rod is threadedly connected to a connecting sleeve, and the upper end of the connecting sleeve is threadedly connected to the lower end of the extension rod.

[0017] The photovoltaic transformer grounding device provided in this embodiment of the invention has the following advantages compared to the prior art:

[0018] 1. This utility model installs a fixing plate on the grounding rod and opens a sliding groove on the inner plate of the fixing plate. A positioning rod is slidably installed in the sliding groove. The fixed position of the sliding positioning rod is adjusted. By rotating the lead screw, the length of the inserted rod can be precisely controlled, so that the inserted rod can penetrate deep into the ground, increasing the contact area and friction between the grounding rod and the soil, thereby greatly improving the stability of the grounding rod in the ground and adapting to different ground conditions.

[0019] 2. This utility model uses a protective sleeve inserted into a fixed plate to protect the connection between the grounding rod and the wiring, providing an additional physical barrier to prevent external mechanical damage. At the same time, the sealing plate seals the gaps in the protective sleeve, enhancing the protective effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the grounding rod connection status according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram showing the disassembled structure of the fixing plate and protective sleeve according to an embodiment of the present utility model;

[0024] Figure 4 This is a cross-sectional schematic diagram of the fixing plate structure according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram showing the disassembled structure of the rotating sleeve and fixing plate according to an embodiment of the present utility model;

[0026] Figure 6 This is a cross-sectional schematic diagram of the positioning mechanism structure according to an embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of the bottom of the protective sleeve structure according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram showing the disassembled structure of the protective sleeve and sealing plate according to an embodiment of the present utility model.

[0029] Figure label:

[0030] 1. Transformer body; 2. Wiring; 3. Grounding rod; 4. Extension rod; 5. Connecting sleeve; 6. Fixing plate; 7. Inner plate; 8. Slide groove one; 9. Lead screw one; 10. Positioning rod; 11. Mounting groove; 12. Lead screw two; 13. Insert rod; 14. Motor; 15. Bevel gear one; 16. Bevel gear two; 17. End gear; 18. Rotating sleeve; 19. Gear ring; 20. Groove; 21. Insertion hole; 22. Protective sleeve; 23. Protrusion; 24. Insertion block; 25. Sealing plate; 26. Slide plate; 27. Slide groove two. Detailed Implementation

[0031] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] Please refer to Figures 1-8 This utility model provides a photovoltaic transformer grounding device, including a grounding rod 3. The grounding rod 3 is connected to the transformer body 1 through a wiring 2. The upper end of the grounding rod 3 is threadedly connected to a connecting sleeve 5. The upper end of the connecting sleeve 5 is threadedly connected to the lower end of the extension rod 4. This connection method can increase the length of the grounding rod 3 to meet the usage requirements of the grounding rod 3.

[0033] To improve the stability of the grounding rod 3 fixed in the soil, a fixing plate 6 is provided at the end of the grounding rod 3. An annular inner plate 7 is provided on the inner side of the fixing plate 6. At least three sliding grooves 8 are equally spaced on the inner plate 7. A positioning mechanism is slidably installed in the sliding grooves 8. The position of the positioning mechanism can be adjusted according to the needs so that the positioning mechanism can be inserted into the appropriate position.

[0034] Furthermore, the positioning mechanism includes a positioning rod 10 that slides within a sliding groove 8. An installation groove 11 is provided inside the positioning rod 10, and an insertion rod 13 is slidably disposed within the installation groove 11. Simultaneously, a lead screw 12 is rotatably disposed within the installation groove 11. The lead screw 12 is threadedly connected to the insertion rod 13, and is driven by a motor 14. The motor 14 can be a micro motor, powered by a battery. After the motor 14 drives the lead screw 12 to rotate, the insertion rod 13 automatically slides out of the positioning rod 10. This allows for precise control of the extension length of the insertion rod 13, enabling it to penetrate deeply into the ground, increasing the contact area and friction between the grounding rod 3 and the soil, thereby significantly improving the stability of the grounding rod 3 on the ground.

[0035] Furthermore, a lead screw 9 is rotatably mounted on the upper side of the slide groove 8. The lead screw 9 is threadedly connected to the upper end of the positioning rod 10. One end of the lead screw 9 is connected to a bevel gear 16. By rotating the lead screw 9, the positioning rod 10 can slide stably within the slide groove 8, thereby allowing adjustment of the insertion position of the positioning rod 10.

[0036] To enable the lead screw 9 to rotate, at least three bevel gears 15 are rotatably mounted on the inner plate 7. The bevel gears 15 mesh with the bevel gears 16. Furthermore, an end gear 17 is connected to the upper end of the bevel gears 15. A rotating sleeve 18 is rotatably mounted at the center of the inner plate 7, and a gear ring 19 is mounted at the lower end of the rotating sleeve 18. Therefore, when the rotating sleeve 18 is rotated, the gear ring 19 can mesh with the end gear 17, causing the end gear 17 to rotate the bevel gears 15. Then, through the meshing of the bevel gears 15 and 16, the bevel gears 16 rotate the lead screw 9, thereby achieving the sliding of the positioning rod 10.

[0037] It is worth noting that, in order to protect the connection between the grounding rod 3 and the wiring 2, a protective sleeve 22 is provided on the upper side of the fixing plate 6. A notch is provided on one side of the protective sleeve 22 to facilitate the passage of the wiring 2. A plug block 24 is provided on the lower side of the protective sleeve 22. The plug block 24 is inserted into the plug hole 21 on the upper side of the fixing plate 6 to fix the protective sleeve 22 on the fixing plate 6. The protective sleeve 22 is used to protect the connection between the grounding rod 3 and the wiring 2.

[0038] Furthermore, a sealing plate 25 is provided in the notch of the protective sleeve 22, and a sliding plate 26 is provided on both sides of the sealing plate 25. The sliding plate 26 is slidably connected to the sliding grooves 27 opened on both sides of the notch. After the protective sleeve 22 is installed, the sealing plate 25 is slid into the notch to seal the notch and enhance the protection effect.

[0039] In addition, a protrusion 23 is provided on the lower side of the protective sleeve 22, and multiple grooves 20 are provided on the upper side of the rotating sleeve 18. When the insertion rod 13 is inserted into the ground, the rotating sleeve 18 no longer rotates. At this time, the protective sleeve 22 can be installed. The protrusion 23 and the groove 20 are inserted and cooperated. At the same time, the insertion block 24 is inserted into the insertion hole 21. This not only installs the protective sleeve 22, but also limits the rotating sleeve 18 to prevent it from rotating accidentally.

[0040] In summary, the working principle of the photovoltaic transformer grounding device of this utility model embodiment is as follows: After the grounding rod 3 is inserted into the ground, the rotating sleeve 18 is rotated according to the ground conditions, so that the gear ring 19 meshes with the three end gears 17. The three end gears 17 drive the three bevel gears 15 to rotate. Through the meshing of the bevel gears 15 and the bevel gears 16, the three bevel gears 16 drive the three lead screws 9 to rotate, so that the three sets of positioning rods 10 slide in the slide groove 8. Adjust the insertion position, and then drive the lead screw 12 to rotate through the motor 14, so that the insertion rod 13 is inserted into the ground. Then, the protective sleeve 22 is installed, so that the protrusion 23 is inserted into the groove 20 and the insertion block 24 is inserted into the insertion hole 21. At the same time, the sealing plate 25 is used to seal the gap of the protective sleeve 22.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic transformer grounding device, comprising a grounding rod (3), the grounding rod (3) being connected to the transformer body (1) via a wiring (2), characterized in that: The end of the grounding rod (3) is provided with a fixing plate (6), and the inner side of the fixing plate (6) is provided with an annular inner plate (7). At least three sliding grooves (8) are opened at equal intervals on the inner plate (7), and a positioning mechanism is slidably installed in the sliding grooves (8).

2. The photovoltaic transformer grounding device according to claim 1, characterized in that: The positioning mechanism includes a positioning rod (10) that slides in a slide groove (8), and an installation groove (11) is provided inside the positioning rod (10), and an insert rod (13) is slidably provided in the installation groove (11).

3. The photovoltaic transformer grounding device according to claim 2, characterized in that: A second lead screw (12) is rotatably installed in the mounting groove (11). The second lead screw (12) is threadedly connected to the insertion rod (13), and the second lead screw (12) is driven by a motor (14).

4. The photovoltaic transformer grounding device according to claim 3, characterized in that: A lead screw (9) is rotatably mounted on the upper side of the slide groove (8). The lead screw (9) is threadedly connected to the upper end of the positioning rod (10). One end of the lead screw (9) is connected to a bevel gear (16).

5. The photovoltaic transformer grounding device according to claim 4, characterized in that: At least three bevel gears (15) are rotatably mounted on the inner plate (7), and the first bevel gear (15) meshes with the second bevel gear (16).

6. The photovoltaic transformer grounding device according to claim 5, characterized in that: The upper end of the bevel gear (15) is connected to the end gear (17), and a rotating sleeve (18) is rotatably provided at the center of the inner plate (7). A gear ring (19) is provided at the lower end of the rotating sleeve (18), and the gear ring (19) meshes with the end gear (17). Multiple grooves (20) are provided on the upper side of the rotating sleeve (18).

7. The photovoltaic transformer grounding device according to claim 1, characterized in that: The upper side of the fixing plate (6) is provided with a protective sleeve (22), and the lower side of the protective sleeve (22) is provided with a plug (24). The plug (24) is inserted into the socket (21) opened on the upper side of the fixing plate (6).

8. The photovoltaic transformer grounding device according to claim 7, characterized in that: The protective sleeve (22) has a notch on one side and a protrusion (23) on the lower side of the protective sleeve (22), which is inserted into the groove (20).

9. The photovoltaic transformer grounding device according to claim 8, characterized in that: A sealing plate (25) is provided in the notch of the protective sleeve (22), and a sliding plate (26) is provided on both sides of the sealing plate (25). The sliding plate (26) is slidably connected to the sliding grooves (27) opened on both sides of the notch.

10. The photovoltaic transformer grounding device according to claim 9, characterized in that: The upper end of the grounding rod (3) is threadedly connected to a connecting sleeve (5), and the upper end of the connecting sleeve (5) is threadedly connected to the lower end of the extension rod (4).

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