JPH0130808Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is designed to discharge residual electricity due to electrostatic induction during power outage recovery work, etc. from the steel tower side to the conductor side of the insulator device. This relates to a grounding device for grounding.

(Prior Art) A conventional grounding device has a long grounding rod with a clamp provided at the tip thereof for clamping a grounding metal fitting or the like.

(Problem that the invention aims to solve) Insulator devices such as UHV are long because they are used for ultra-high pressure, so when grounding with a grounding rod, the length of the grounding rod is approximately 10 m in the case of UHV, for example. It becomes longer. For this reason, the grounding metal fitting cannot be smoothly clamped with the clamp part at the tip of the grounding rod, and as a result of the clamping part touching the arcing horn or the metal fitting on the conductor side, spark marks may be left or the metal fittings on the arcing horn or conductor side may not function properly. was often damaged.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a guide member having a curved plate that surrounds a part of the outer periphery of the insulator umbrella, with the concave portion of the curved plate facing outward. It is arranged on both sides of the grounding rod and is attached to the grounding rod via the mounting arm to form a grounding device.

(Function) As mentioned above, the grounding device of the present invention is provided with guide members having curved plates surrounding a part of the outer periphery of the insulator umbrella on both sides of the grounding rod. The ground rod can be correctly lowered into the space between adjacent insulators.

Therefore, according to the present invention, the grounding metal fitting can be smoothly clamped with the clamp portion at the tip of the grounding rod, and there is no fear that the grounding rod will come into contact with the arcing horn or the metal fitting on the conductor side on the way. Therefore, the functions of the arc horn and the metal fittings on the conductor side are not damaged.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, 1 is the fixing member on the steel tower side, 2 is the connecting metal fittings, 3 is the double yoke, 4 is the connecting metal fittings, 5 is the double insulator chain, 6 is the connecting metal fittings, and 7 is the cross-shaped yoke on the conductor side. , 8 is a grounding fitting protruding from this cross-shaped yoke 7, 9 is an arc horn provided on the double yoke 3,
10 is an arc horn provided on the cross-shaped yoke 7.

Also, 11 is the grounding rod of the earther, and 12 is the grounding rod 1.
This is a clamp provided at the tip of 1.

3 and 4 show a first embodiment of the present invention. In this embodiment, a curved plate 13a surrounding a part of the outer periphery of an insulator umbrella 5a of an insulator chain 5, and a curved plate 13a Mounting arm 13b protruding from the back of
and a flanged split boss portion 13c provided at the end of the mounting arm 13b.
3 is integrally formed of an insulating material such as synthetic resin, and the guide members 13 are arranged on both sides of the ground rod 11 with the concave portion of the curved plate 13a facing outward, and the flange portion of the split boss portion 13c are fastened with bolts 14 and nuts 15 to fix the guide member 13 to the ground rod 11.

The length L of the curved plate 13a in the vertical direction is preferably larger than the length l of one pitch of the insulator umbrella 5a of the insulator chain 5.

FIG. 5 shows a second embodiment of the present invention, in which the same reference numerals as those described above indicate equivalent parts. In this embodiment, an annular groove 16 is provided on the outer peripheral surface of the grounding rod 11,
By providing a protrusion 17 that fits into the annular groove 16 and protruding from the inner peripheral surface of the split boss portion 13c of the guide member 13, the ground rod 11 and the guide member 13 are rotatably coupled.

FIG. 6 shows a third embodiment of the present invention, and the same reference numerals as those mentioned above in the figure indicate equivalent parts.

In this embodiment, a collar 19 having an annular groove 18 on the outer periphery is fitted onto the grounding rod 11, the collar 19 is fixed to the earthing rod 11 with bolts 20, and the guide member 13 is attached to the annular groove 18 in a split type. Boss part 1
A protrusion 17 protruding from the inner circumferential surface of 3c is slidably fitted therein.

The procedure for using the grounder is that it is connected to the clamp 12 at the tip of the grounding rod 11, and
The proximal side of a lead wire (not shown) that is attached to or inserted into the ground rod is firmly locked in advance to a member on the tower side (for example, the fixed member 1), and then the ground rod 11 is inserted from the tower arm side. lower it toward the grounding metal fitting 8. At this time, the guide member 13 of the earthing device can be placed along the outer periphery of the insulator umbrella 5a.

Subsequently, the grounding metal fitting 8 is clamped with the clamp 12 at the tip of the grounding rod 11.

As mentioned above, the grounding device of the present invention has its grounding rod 1
Since guide members 13 having curved plates 13a surrounding a part of the outer periphery of the insulator umbrella 5a are provided on both sides of the insulator umbrella 5a, the ground rods 11 are guided by the guide members 13 so that the ground rods 11 are adjacent to each other as shown in FIG. The insulators can be lowered correctly into the spaces between the five insulators.

Therefore, according to the present invention, the grounding fitting 8 can be smoothly clamped with the clamp 12 at the tip of the grounding rod 11, and there is no fear that the grounding rod 11 will touch the arc horns 9, 10 or the metal fitting on the conductor side on the way. Therefore, the functions of the arc horn and the metal fittings on the conductor side are not damaged.

Furthermore, in the second and third embodiments shown in FIGS. 5 and 6, the grounding rod 11 is rotatable relative to the guide member 13, so the grounding fitting 8 can be connected by rotating the grounding rod 11. Suitable for clamping.

In particular, the third embodiment does not require any new processing on the grounding rod 11, so it has the advantage that the present invention can be easily applied to conventional grounding rods.

(Effect of the invention) As described above, according to the invention,
This has the excellent effect of ensuring safety against electrostatic induction and electromagnetic induction, which must be taken into consideration when shutting down ultra-high voltage power transmission such as 500KV.

Further, according to the present invention, even in conventional work, the guidance by the guide member 13 not only makes the work easier and more efficient, but also prevents damage to equipment due to spark generation.

[Brief explanation of the drawing]

Figure 1 is a front view of the dual suspension system, Figure 2 is a side view, and Figure 3 is a view of the device in use.
FIG. 4 is a plan view thereof, FIG. 5 is a partial cross-sectional view of the second embodiment of the present invention, and FIG. 6 is a partial cross-sectional view of the third embodiment of the present invention. It is a partial diagram. 5... Insulator chain, 5a... Insulator umbrella, 8... Grounding metal fitting, 9, 10... Arc horn, 11... Grounding rod, 12... Clamp, 13... Guide member, 1
3a...Curved plate, 13b...Mounting arm, 13c...
Split boss part, 16... annular groove, 17... protrusion,
18...Annular groove, 19...Color.

Claims (1)

[Claims for Utility Model Registration] 1. A guide member having a curved plate surrounding a part of the outer periphery of an insulator umbrella is arranged on both sides of the ground rod with the concave portion of the curved plate facing outward, and A grounding device attached to a grounding rod. 2. A split boss is provided on the mounting arm that is integrated with the guide member, and a protrusion is provided on the inner peripheral surface of the boss, and an annular groove is provided on the outer peripheral surface of the grounding rod, and the protrusion is inserted into the annular groove. A grounding device according to claim 1, which is a utility model and is formed by fitting and rotatably coupling a grounding rod and a guide member. 3. A claim for utility model registration in which a collar is attached to the outer periphery of a grounding rod, an annular groove is provided on the outer periphery of the collar, and a protrusion that fits into the annular groove is provided on the inner periphery of the split boss portion of the guide member. Grounding equipment as described in scope 1.