JPS581987Y2 - Grounded metal fitting - Google Patents

Description

[Detailed explanation of the invention] When expanding or repairing electric power cables, etc., the work is carried out with a power outage, but at that time, voltage is applied to the electric power cable under construction due to induction from other electric power cables, etc. that are energized. Occur.

To prevent this, grounding fittings are attached to electric cables such as power cables in substations and the like.

The present invention relates to a grounded metal fitting for preventing damage to the electric wire to which the grounding metal fitting is attached.

The present invention will be explained below while comparing it with conventional products.

Referring to FIGS. 1 to 3, a known grounded metal fitting and its attached state are shown.

1 are electric wires that are generally installed in parallel. 2 is a grounded metal fitting A, and 3 is a U bolt for fixing the grounded metal fitting 2 to an electric wire.

Reference numeral 4 denotes a hooking arm for a grounding metal fitting, and a spherical part 5 is integrally provided at the end of the hooking arm, and the grounding metal fitting is hooked onto this arm and grounded.

With the above structure, the grounded metal fitting 2 is fixed to the electric wire 1 by the U bolt 3 as shown in Fig. 1.The grounded metal fitting 2 is fixed to the electric wire as shown in Fig. 8, and the grounded metal fitting is attached to this. , the weight of the grounding fitting gives a twisting moment to the wire.

As a result, the shaping and twisting of the wires, which were originally done to improve the appearance, were ruined, which was disappointing.

Furthermore, since the grounded metal fitting 2 once installed is not removed even in places other than between construction halls, the phase-to-phase distance t' (Fig. 1) has to be made small, and there is a risk of short circuit.

The present invention provides a grounded metal fitting to solve the above-mentioned drawbacks, and will be explained with reference to FIG. 4 and subsequent figures.

In FIG. 4, reference numeral 6 denotes a grounded metal fitting according to the present invention, which is attached vertically to the electric wire 1.

Reference numeral I designates an engagement frame for hooking an engagement portion (not shown) of the grounding metal fitting 6 on the grounding metal fitting 6, and is formed into a vertically long rectangle.

Note that the rectangular engagement frame I is formed so that when attached to the electric wire 1, two opposing upper and lower sides 7a and 7b are perpendicular to the electric wire 1.

Reference numeral 8 denotes a clamp portion integral with one side 7a of the engagement frame I, and a semicircular recess 9 in cross section with a low weight for the electric wire 1 and a screw hole 10 for screwing in a bolt are provided inside thereof.

Reference numeral 11 denotes a wire clamping member, on the inside (on the side opposite to the recess 9 of the engagement frame 1), a recess 12 into which the wire 1 is fitted and a bolt insertion hole 13 are provided concentrically with the nine-hole 10. .

15 is a bolt for tightening, and 16 is a washer.

17 is a circular recess provided on the outside of the wire clamp member 11.

With the above configuration, the grounded metal fitting 6 can be easily attached to the electric wire 1 by sandwiching the electric wire 1 between the recesses 9 and 12 and screwing the bolt 15 through the one shear 16. Can be done.

Furthermore, when the grounding fitting is installed vertically, the engaging portion 7b of the grounding fitting becomes horizontal.

One side 7b of the above-mentioned rectangle becomes the engagement part of the grounding fitting, and no matter how inclined the wire is, the engagement part is always horizontal, so it is easy to install the grounding fitting, and the weight of the grounding fitting is Since no torsional moment is generated, the shape of the wire will not be disrupted.

Note that the sides 7a and 7b are extremely short so as not to reduce the interphase distance.

As described above, with the simple structure, it is not only easy to hook the grounding metal fitting, but also the engaging portion always maintains a horizontal position, which is excellent in terms of preventing the grounding metal fitting from falling off.

Of course, since the grounded metal fitting is always attached at right angles to the wire, no torsional moment is applied to the wire, so the wire is completely protected.

In addition, the grounded metal fitting hangs perpendicularly to the electric wire, and the engagement frame is made into a vertically long rectangle, so it is similar to known grounded metal fittings.
The interphase distance t' (FIG. 1) is not substantially reduced and is safe.

[Brief explanation of the drawing]

FIG. 1 shows a conventional grounded metal fitting attached to an electric wire. FIG. 2 is a plan view of a known grounded metal fitting. Figure 3 is also a front view. FIG. 4 shows a state in which the grounded metal fitting according to the present invention is attached to an electric wire. FIG. 5 is a partially cutaway front view of the grounded metal fitting according to the present invention. Figure 6 is a left side view of Figure 5. In the figure, 1...Electric wire, 2...Grounded metal fitting, 3...U bolt, 4...Hatch arm, 5... Spherical part, 6... Grounded metal fitting, 7... Engagement frame, 8... Clamp part, 9... (semicircular cross section) recessed part, 10...・・・・・・
・Screw hole, 11...Wire clamp member, 12・
... recess, 13 ... stupid hole, 15 ...
... Bolt (for tightening), 16 ... One shear 17 ... Circular recess (of the wire flang member).

Claims (1)

[Scope of utility model registration request] An engagement frame 1 for disengaging a grounding metal fitting that is shaped like a vertically long rectangle and has a clamp part 8 that is integral with the upper short side 7a of the rectangle; and a wire clamp member 11 that is tightened in opposition to the clamp part 8. , a bolt 15 for tightening the wire clamp member 11 to the clamp portion 8, and the clamp portion 8 and the wire clamp member 11 have recesses 9, 12 having semicircular cross sections for clamping the wire. Furthermore, the clamp member 8 is provided with a bolt screw relief hole 10, and the wire clamp member 11 is provided with a bolt insertion hole 13, so that when attached to the wire, the rectangular engagement frame 7 is placed on a surface perpendicular to the wire. A grounded metal fitting characterized by being made to hang down.