Grounding electrode device

Abstract

The utility model relates to a grounding electrode device which comprises a grounding electrode, the lower end of the grounding electrode is pointed, and a connecting lug is welded at the upper end of the grounding electrode; mounting holes are formed in the two ends of the connecting lug and used for being connected with a grounding wire connector. A through hole matched with the mounting hole where the connecting lug is located is formed in the end part of the grounding wire connector, and a screw rod passes through the through hole and is locked by a nut; a left covered bowl is installed on one side of the screw rod, a right covered bowl is installed on one side of the nut, and through holes for the screw rod to pass through are formed in the left covered bowl and the right covered bowl. The grounding electrode device is relatively simple in structure and easy to popularize and use; through the structure that the screw and the nut which are mutually matched and tightened are located in the left covered bowl and the right covered bowl respectively, the disassembly difficulty is increased; after the graphite paper gasket is used, good contact is formed between the two surfaces of the graphite paper gasket and the contact surface of the connecting lug and the grounding wire connector, and the contact resistance is very small.

Description

Technical Field

[0001] The utility model belongs to the technical field of distribution network components, and particularly relates to a grounding electrode device. Background Art

[0002] A grounding electrode is a metal conductor buried in the ground and directly in contact with the earth, which plays a role in protecting the equipment from grounding and also protects the safe operation of personnel. The buried depth of the top surface of the grounding electrode is usually not less than 0.8 m. Therefore, one type of grounding electrode is composed of a slender rod with a pointed head, and a connecting ear for connecting the grounding wire is welded at a position far from the pointed head, and is connected by bolts and nuts. However, this structure still has certain defects. On the one hand, the bolts and nuts are easily maliciously disassembled, and the safety performance is poor; on the other hand, the contact surface between the grounding wire connector and the connecting ear is not the best, and the local resistance is too large. Summary of the Utility Model

[0003] According to the problems mentioned in the background art, the utility model provides a grounding electrode device for improving the relevant problems, and its technical solution is as follows:

[0004] A grounding electrode device includes a grounding electrode 1 with a pointed lower end, and a connecting ear 2 is welded to its upper end; mounting holes are opened at both ends of the connecting ear 2 for connecting a grounding wire connector 3; a through hole adapted to the mounting hole where the connecting ear 2 is located is opened at the end of the grounding wire connector 3, a screw rod 9 passes through the through hole and is locked by a nut 10; a left cover bowl 5 is installed on one side of the screw rod 9, and a right cover bowl 4 is installed on one side of the nut 10, and through holes for the screw rod 9 to pass through are opened on both the left cover bowl 5 and the right cover bowl 4.

[0005] Further, a graphite paper gasket 6 is installed between the contact surfaces of the connecting ear 2 and the grounding wire connector 3.

[0006] Further, a left gasket 11 is installed between the contact surfaces of the screw rod 9 and the left cover bowl 5; a right gasket 12 is installed between the contact surfaces of the nut 10 and the right cover bowl 4.

[0007] Further, a left cap 8 and a right cap 7 are respectively installed at the openings of the left cover bowl 5 and the right cover bowl 4.

[0008] Further, the left cap 8 and the right cap 7 have the same structure, and a plurality of grooves are evenly opened in a circle of the left cap 8 to form a toothed edge, and spherical protrusions 81 are provided on the outer surface of each toothed edge.

[0009] Beneficial effects: The grounding electrode device has a relatively simple structure and is easy to promote and use. The structure in which the screw 9 and the nut 10 tightened in cooperation are respectively located in the left cover bowl 5 and the right cover bowl 4 increases the difficulty of disassembly; after using the graphite paper gasket 6, good contact is formed between its two sides and the contact surfaces of the connecting ear 2 and the grounding wire connector 3, and the contact resistance is very small. The following embodiments correspondingly describe other beneficial effects. Please refer to them. Brief description of the drawings

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 is a schematic structural diagram of the grounding electrode device;

[0012] Figure 2 is Figure 1 the top view of;

[0013] Figure 3 is Figure 2 the partial enlarged view of part A in;

[0014] Figure 4 is Figure 3 the sectional view in the G-G direction of;

[0015] Figure 5 is the schematic diagram of the left cap or the right cap;

[0016] In the figure: grounding electrode 1, connecting ear 2, grounding wire connector 3, right cover bowl 4, left cover bowl 5, graphite paper gasket 6, right cap 7, left cap 8, spherical protrusion 81, screw 9, nut 10, left gasket 11, right gasket 12. Specific implementation manners

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0018] Please refer to Figures 1-5 as shown, in one of the embodiments of the present invention, Embodiment 1:

[0019] A grounding electrode device includes a grounding electrode 1 with a pointed lower end and a connecting ear 2 welded to its upper end. Installation holes are provided at both ends of the connecting ear 2 for connecting the grounding wire connector 3. A through hole adapted to the installation hole where the connecting ear 2 is located is provided at the end of the grounding wire connector 3. A screw 9 passes through this through hole and is locked by a nut 10. A left cover bowl 5 is installed on one side of the screw 9, and a right cover bowl 4 is installed on one side of the nut 10. Through holes for the screw 9 to pass through are provided on both the left cover bowl 5 and the right cover bowl 4.

[0020] In this grounding electrode device, the screw 9 and the nut 10 that are screwed together tightly are respectively inside the left cover bowl 5 and the right cover bowl 4. When installing or disassembling, special tools such as a socket wrench or a ratchet wrench are needed for operation, and it is difficult to operate with simple tools such as a wrench, thus avoiding the phenomenon of malicious disassembly.

[0021] As one specific embodiment of the above embodiment, Embodiment 2:

[0022] A graphite paper gasket 6 is installed between the contact surfaces of the connecting ear 2 and the grounding wire connector 3.

[0023] Due to its fine texture and softness, when the screw 9 and the nut 10 are in a tightly pressed state, good contact is formed between the two sides of the graphite paper gasket 6 and the contact surfaces of the connecting ear 2 and the grounding wire connector 3. Thus, the contact resistance is very small, and the phenomenon of poor contact resistance between the grounding wire connector and the connecting ear is avoided.

[0024] As one specific embodiment of the above embodiment, Embodiment 3:

[0025] A left gasket 11 is installed between the contact surfaces of the screw 9 and the left cover bowl 5; a right gasket 12 is installed between the contact surfaces of the nut 10 and the right cover bowl 4.

[0026] The left gasket 11 and the right gasket 12 will further increase the reliability when the screw 9 and the nut 10 are in a tightly pressed state and avoid the loosening phenomenon over a long time.

[0027] As one specific embodiment of the above embodiment, Embodiment 4:

[0028] A left cap 8 and a right cap 7 are respectively installed at the openings of the left cover bowl 5 and the right cover bowl 4.

[0029] The left cap 8 and the right cap 7 close the openings of the left cover bowl 5 and the right cover bowl 4, placing the screw 9, the left gasket 11, the right gasket 12, and the nut 10 inside a sealed space. This not only avoids the accumulation of dust, rainwater, and other impurities here but also further increases the difficulty of malicious disassembly.

[0030] As one of the specific embodiments of the above embodiments, Embodiment 5:

[0031] The left cap 8 and the right cap 7 have the same structure. A plurality of grooves are evenly formed in a circle of the left cap 8, thereby forming a toothed edge, and spherical protrusions 81 are provided on the outer surface of each toothed edge.

[0032] When the left cap 8 and the right cap 7 are respectively covered in the left bowl 5 and the right bowl 4, the spherical protrusions 81 are tightly squeezed, which further enhances the connection effect.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grounding electrode device, characterized in that, It includes a grounding electrode (1) with a pointed lower end and a connecting ear (2) welded to its upper end; mounting holes are provided at both ends of the connecting ear (2) for connecting a grounding wire connector (3); a through hole adapted to the mounting hole where the connecting ear (2) is located is provided at the end of the grounding wire connector (3), and a screw rod (9) passes through this through hole and is locked by a nut (10); a left cover bowl (5) is installed on one side of the screw rod (9), and a right cover bowl (4) is installed on one side of the nut (10), and through holes for the screw rod (9) to pass through are provided on both the left cover bowl (5) and the right cover bowl (4).

2. The grounding electrode device according to claim 1, characterized in that, A graphite paper gasket (6) is installed between the contact surfaces of the connecting ear (2) and the grounding wire connector (3).

3. The grounding electrode device according to claim 2, characterized in that, A left gasket (11) is installed between the contact surfaces of the screw rod (9) and the left cover bowl (5); a right gasket (12) is installed between the contact surfaces of the nut (10) and the right cover bowl (4).

4. An earth electrode device according to claim 3, characterized in that, Left and right caps (8) and (7) are respectively installed at the openings of the left cover bowl (5) and the right cover bowl (4).

5. An earth electrode device according to claim 4, characterized in that, The left and right caps (8) and (7) have the same structure, wherein a plurality of grooves are evenly formed in a circle of the left cap (8), thereby forming a toothed edge, and spherical protrusions (81) are provided on the outer surfaces of the toothed edges.

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