CN103618158A - Grounding ring - Google Patents

Abstract

A grounding ring. A grounding ring with a simple structure is provided. It conveniently covers exposed metal parts of the grounding ring, effectively preventing short circuits caused by overlapping wet branches. The ring comprises a grounding ring body, comprising a metal conductor and an insulating sheath. The insulating sheath is fitted over the metal conductor, with the bottom edge of the ring body exposed, forming a grounding section. The ring also includes a switch-type protective mechanism, mounted on the insulating sheath, for covering or exposing the grounding section. The present invention is easy to operate, has wide adaptability, and is highly reliable.

Description

a ground ring

technical field

The invention relates to a power maintenance tool, in particular to a fully insulated grounding ring.

Background technique

At present, overhead insulated wires are generally used for the laying of urban distribution network lines. However, in order to ensure the safety of maintenance personnel when repairing lines or equipment, it is necessary to hang a grounding protection line after verifying that the line is dead. This requires that when the ground wire is hung, the ground wire clip and the wire must be in reliable contact, and the insulated wire cannot be hung, so the grounding ring for electric testing is used.

When the existing grounding ring is not in use, its working part (metal conductor) is exposed. First, in rainy, snowy and windy weather, it is easy to cause wet branches to overlap the working part, causing a short circuit and affecting the normal operation of the power supply. , causing inconvenience to civilian and industrial electricity. The second is that even in normal weather, streamers (firework residues), kites (wires) and sundries floating with the wind that often appear on the surface of metal conductive substances may come into contact with the exposed parts of the grounding ring, causing the line to trip.

The publication number published by the State Intellectual Property Office on January 16, 2013 is CN102882026A, titled "Integral Insulator and Grounding Clamp with Flip Cover Insulation Safety Cover", which seals the connection between the grounding clamp and the power line in an insulating In the safety cover, and use the flip cover to cover the connection ring of the grounding clamp, avoiding the long-term erosion of the connection and the connection ring by external rain and snow, ensuring the long-term safe operation of the power line; also effectively eliminating the possibility of leakage at the exposed connection .

In this case, the whole grounding ring is covered, which increases the production cost; at the same time, the insulator of this case is connected with the grounding clamp, so it is only convenient to connect the flip cover on the basis of the safety cover, which does not have universality and poor adaptability; in the prior art , the grounding ring works alone, and it is inconvenient to install the clamshell in this case; even if it is installed, the grounding ring is set vertically, resulting in inconvenient operation, failing to achieve the expected use effect, poor reliability, and increasing labor costs.

Contents of the invention

Aiming at the above problems, the present invention provides a grounding ring with a simple structure, which is convenient to cover the exposed metal part of the grounding ring, and effectively avoids short circuit caused by overlapping of wet branches.

The technical solution of the present invention is to include a grounding ring body, the grounding ring body includes a metal conductor and an insulating sheath, the insulating sheath is set on the metal conductor, and the bottom edge of the grounding ring body is exposed. The ground segment; also includes a switch-type protection mechanism, the switch-type protection mechanism is arranged on the insulating sheath, and is used to cover or expose the ground segment.

The switch-type protection mechanism includes a sleeve and a protective cover, the sleeve is sleeved on the insulating sheath adjacent to the grounding section, and the protective cover is hinged on one end of the sleeve facing the grounding section.

The switch-type protective mechanism includes a protective cover and a lug arranged on the insulating sheath adjacent to the grounding section, and the protective cover is hinged on the lug.

The body of the protective cover is U-shaped, and the top and both sides of the protective cover are respectively provided with opposite flexible ribs, which are used to seal the grounding section in the protective cover.

The flexible rib is in the shape of a sheet.

The flexible rib is arc-shaped in cross section.

The flexible rib is in an inverted T shape in cross section.

The bottom of the flexible rib is arranged inside the top end of the protective cover.

The bottom of the protective cover is provided with a pull ring.

The present invention adds a switch-type protective mechanism to the grounding section of the insulating ring, which is convenient for covering the grounding section of the insulating ring when it is not working, and avoids the phenomenon of circuit short circuit caused by overlapping of branches and contact of foreign objects in windy and rainy weather. , to ensure the normal operation of the circuit. The switch-type protective mechanism is hinged through the protective cover to cover the grounding section, which is simple and easy; a flexible rib is set on the top of the protective cover to realize a fully enclosed environment and improve reliability and service life. During operation, the operator can use the insulating rod on the ground to pull down and push up the pull ring, without dismantling the climbing rod, and the operation is simple.

The invention has the advantages of convenient operation, wide adaptability and high reliability.

Description of drawings

Fig. 1 is a structural representation of the present invention,

Fig. 2 is a schematic structural diagram of Embodiment 1 of the present invention,

Fig. 3 is a schematic structural diagram of Embodiment 2 of the present invention,

Fig. 4 is a sectional view of the A-A plane in Fig. 1,

Fig. 5 is the second cross-sectional view of A-A plane in Fig. 1,

Fig. 6 is the sectional view three of A-A plane in Fig. 1,

Fig. 7 is the structural representation of protective cover among the present invention,

Fig. 8 is a schematic diagram of the three-dimensional structure of the protective cover in the present invention,

Fig. 9 is a working state diagram of the present invention;

In the figure, 1 is a metal conductor, 2 is an insulating sheath, 3 is a protective cover, 30 is a pull ring, 4 is a sleeve, 5 is a lug, 6 is a body, 7 is a grounding section, and 8 is a flexible rib.

Detailed ways

As shown in Figures 1-9, the present invention includes a grounding ring body, the grounding ring body includes a metal conductor 1 and an insulating sheath 2, the insulating sheath 2 is sleeved on the metal conductor 1, and the grounding ring The bottom edge of the body is exposed, which is the grounding section 7 ; it also includes a switch-type protection mechanism, which is arranged on the insulating sheath 2 and is used to cover or expose the grounding section 7 . The grounding ring body is equipped with a switch-type protective mechanism, which can meet the needs of different working environments of the grounding ring, with wide adaptability and high reliability.

As shown in Fig. 2, the first embodiment of the present invention, the switch-type protection mechanism includes a sleeve 4 and a protective cover 3, and the sleeve 4 is sleeved on the insulating sheath 2 adjacent to the grounding section 7 Above, the protective cover 3 is hinged on the end of the sleeve 4 facing the grounding section 7 .

The pipe sleeve 4 is a hollow sleeve, which is set on the insulating sheath 2 adjacent to the grounding section 7. The bottom of the pipe sleeve 4 is provided with lugs, and the protective cover is hinged on the lugs. , cover the grounding segment at the bottom of the grounding ring body. The pipe sleeve 4 is detachably connected during work, which is convenient for assembly, disassembly and replacement.

As shown in Figure 3, the second embodiment of the present invention, the switch-type protective mechanism includes a protective cover 3 and a lug arranged on the insulating sheath 2 adjacent to the ground section, the protective cover 3 is hinged on said lug 5. Connecting the lug 5 and the insulating sheath 2 into one body facilitates processing and saves production costs.

As shown in Figures 7-8, the body 6 of the protective cover is U-shaped, and the mouth edges on both sides of the top end of the protective cover 3 are respectively provided with opposite flexible ribs 8 for closing the grounding section 7 in the protective cover 3. The flexible sidewall 8 is set, which is convenient for processing and operation, and realizes the full sealing of the grounding section.

The flexible rib 8 is in the shape of a sheet.

As shown in FIG. 4 , the flexible rib 8 is arc-shaped in cross section, which is convenient for production and processing.

As shown in FIG. 5 , the flexible rib 8 is in an inverted T shape in cross section, and its upper and lower sides are inwardly arc-shaped, which is convenient for guiding the opening and closing action of the ground section.

As shown in FIG. 6 , the bottom of the flexible rib 8 is arranged inside the top end of the protective cover.

During work, the flexible rib is in an inverted T shape, which realizes that when the ground section is closed, the flexible rib can be opened to both sides, avoiding the flexible rib being brought into and squeezed into the U-shaped body; the metal After the conductor enters the U-shaped body, the flexible rib can quickly recover and be closed.

The bottom of the flexible rib 8 is arranged on the inner side of the top of the protective cover, which further improves the reliability of the flexible rib and facilitates recovery.

The bottom of the protective cover 3 is provided with a pull ring 30, which is convenient for the staff to open and close directly on the ground, saving working time and cost.

As shown in Fig. 9, the working state of the present invention is: the lower part of the grounding ring is grounded, and the upper part is connected with electric wires.

The grounding ring in the invention maintains a fully insulated state when the line is in normal operation, and can provide a reliable grounding section for the line when the line is overhauled. The grounding ring is made of polymer memory insulating material, which is not easy to be damaged and deformed, and can be reused; it improves the level of safe and reliable operation of the insulated circuit.

Claims (9)

1. A grounding ring, comprising a grounding ring body, the grounding ring body comprising a metal conductor and an insulating sheath, the insulating sheath being set on the metal conductor, the bottom edge of the grounding ring body is exposed, for The grounding section is characterized in that it also includes a switch-type protection mechanism, the switch-type protection mechanism is arranged on the insulating sheath, and is used to cover or expose the grounding section. 2. A grounding ring according to claim 1, wherein the switch-type protective mechanism includes a sleeve and a protective cover, and the sleeve is set on the insulating sheath adjacent to the grounding section, so that The protective cover is hinged at one end of the sleeve facing the grounding section. 3. A grounding ring according to claim 1, characterized in that, the switch-type protective mechanism comprises a protective cover and a lug arranged on an insulating sheath adjacent to the grounding section, and the protective The cover is hinged on said lugs. 4. A grounding ring according to claim 2 or 3, wherein the body of the protective cover is U-shaped, and the mouth edges on both sides of the top end of the protective cover are respectively provided with oppositely arranged flexible ribs, It is used to enclose the grounding section in the protective cover. 5. The grounding ring according to claim 4, wherein the flexible rib is in the form of a sheet. 6. The grounding ring according to claim 4, wherein the flexible rib is arc-shaped in cross section. 7 . The grounding ring according to claim 4 , wherein the flexible rib is in an inverted T shape in cross section. 8 . 8. The grounding ring according to any one of claims 5-7, wherein the bottom of the flexible rib is arranged inside the top end of the protective cover. 9. A grounding ring according to claim 2 or 3, characterized in that a pull ring is provided at the bottom of the protective cover.

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