JPH02254909A - Stringing of wire/cable - Google Patents

Abstract

PURPOSE:To make the stringing of a wire/cable to electric poles neat by boring holes to the bottom of an 8-shaped conduit with a messenger wire at arbitrary intervals, by stringing this 8-shaped conduit between electric poles and by inserting the wire/cable except a power line one into this conduit. CONSTITUTION:In an 8-shaped conduit 1 with a messenger wire is injected plastic coating to cover with over the messenger wire and a corrugated pipe through a neck section 6. The 8-shaped conduit 1 with the messenger wire is suspended and strung to a bracket 12 of an electric pole 11 with a suspension fitting 13. Using a lead wire composed of piano wires a wire/cable 14 is inserted as required except the power line one.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to the installation of electric wires and cables other than electric power systems at the bottom of utility poles over which high-voltage overhead lines and/or low-voltage distribution lines are installed. Regarding how to.

[Conventional technology]

Until now, it was common for communication and power lines to be separated and strung on separate utility poles. However, in recent years, the division between electric power and communication cables has become less clear, and economic efficiency has been pursued, and communication cables and TV listening cables have been installed on power utility poles beyond the above-mentioned categories. , L
Electrical wires and cables other than electric power systems that form various communication information networks, such as AN or cable broadcasting wires, have come to be spanned.

The current state of the wiring of these wires and cables to power utility poles is that high-voltage overhead wires are strung across the arms at the top of the utility poles, low-voltage distribution lines are strung below them, and Electric wires and cables other than the power system are strung across the area. This is due to the fact that the electric power company provides the support for the poles, and it is natural to ensure safety such as preventing electric shock.

However, since the wiring of various electric wires and cables other than those mentioned above under these electric power system wires is carried out by different companies, they can be strung as they please, and in severe cases, There are even cables that are strung directly onto utility poles without the use of armrests, which is not desirable in terms of aesthetics, and this tendency is particularly evident in downtown areas and densely populated residential areas.

[Problem to be solved by the invention]

In view of the above, the present invention provides a zone in the span direction for housing the various electric wires and cables other than the power system under the utility pole on which high-voltage overhead wires and low-voltage distribution lines are strung, and in this zone, the electric wires and cables are stored. This is an attempt to beautify the installation of electric wires and cables on poles by storing cables all at once.

[Means for solving problems]

In order to solve the above-mentioned problems, the electric wire/cable spanning method of the present invention provides a potbell-shaped wire tube with a mesh-changer wire, which is formed by integrally molding a corrugated pipe and a mesh-changer wire with a plastic coating through the neck. This is a method in which holes are drilled in the bottom of the pipe at arbitrary intervals, this potbellied conduit is strung between utility poles, and electric wires and cables other than the power system are inserted into the potbellied conduit.

[Effect]

Insertion into the bell-shaped pipe with a measuring wire that spans between utility poles allows for the simultaneous insertion of electric wires and cables other than the power system. Perforations at arbitrary intervals in the bottom of the dosing tube serve to allow drainage in the potbell-shaped dosing tube with the measuring wire in the strung condition (curved condition).

〔Example〕

First, a potbell-shaped dose tube with a measuring wire used in the spanning method of the present invention will be described.

In FIG. 1, a potbellied electric conduit 1 with a messenger wire is formed by extruding a plastic jacket 4.5 over a messenger wire 2 and a corrugated pipe 3 via a neck 6. A drain hole 10 is bored in the bottom of this potbellied electrical conduit 1 with messenger wire. The spacing between the drain holes 10 is arbitrary, but it is preferable that the spacing is large enough to eliminate the water intrusion inside the messenger wire-equipped Daruma electric conduit l in the stretched state (curved state).

Next, a method of wiring electric wires and cables using this potted conduit 1 with a messenger wire will be explained. As shown in Fig. 2, a pot-shaped dose tube with a measuring wire 1
is suspended from the arm 12 of the utility pole 11 by a hanging metal fitting 13. Piano I is placed inside this Daruma-shaped dose tube 1 with wire. (Round wire, rectangular tIA) lead wires are used to insert necessary electric wires/cables 14 other than the power system.

Furthermore, the branching method of the inserted electric wire/cable 14 is determined in a third manner.
This will be explained using figures. ``At the part where a branch is required, cut the neck part 6 in the length direction, loosen the screws 18 and 19 of the clamps 17a and 17b set up on the base plate 16 at this part, leave the messenger wire covering part 5 as it is, and remove the conduit. The covering portion 4 is housed through the bushing 20, and the clamp 17a
, 17b, and then tighten the screws 18 and 19 by passing the rod 21 that maintains the clamp interval. A terminal block 22 is provided on the base plate 16, and branched electric wires/cables are branched at the terminal block, and a branch &I 23 is drawn out from the lower part thereof.

Side plates 24 are fitted to the front and rear of the base plate 16, and side Fi2
A through nozzle 25 is provided where the messenger wire sheathing portion 5 and the conduit sheathing portion 4 of No. 4 penetrate, and a vertical slit is provided in this nozzle 25 so that the messenger wire sheathing portion 5 and the conduit sheathing portion 4 pass through each other. 4 expands this slit and pushes it in. There are dovetails and dovetail grooves on the opposite side of the slit, which engage and become integrated. A cover 26 is placed over the tops of the clamps 17a and 17b, and the inner surface of the cover, the side plate 24, and the base plate 16 are engaged with each other at dovetail grooves to form a terminal box.

〔Effect of the invention〕

The present invention involves punching holes at arbitrary intervals in the bottom of a bell-shaped dowel tube with messenger wire, which is made by integrally molding a corrugated pipe and a messenger wire through the neck with a plastic coating, and attaching the bell-shaped dome tube to a utility pole. Since the electric wires and cables for non-power systems are inserted into this potable conduit and stored all at once, there is no risk of the electric wires and cables getting soaked with water inside the conduit. can be achieved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a pot-shaped dosing tube with a messenger wire, FIG. 2 is a perspective view showing a state in which electric wires and cables are strung together, and FIG. 3 is a view showing a method for branching electric wires and cables. Note that explanations of main symbols in the drawings are as follows. 1... Daruma-shaped dose tube with mesh sensor wire 2...
-Messenger wire 3...Corrugated pipe 4.5-...Sheathing material 6...Neck 10...Drain hole 11...Electric pole 14...Electric wire/cable. Patent applicant: Tatsuta Electric Cable Co., Ltd. Agent: Yoshiyuki Kaji, patent attorney Figure 2

Claims (1)

[Claims] (1) The bottom of a bell-shaped conduit with messenger wire, which is made by integrally molding a corrugated pipe and messenger wire with plastic coating through the neck, is perforated at arbitrary intervals, and this pot-shaped conduit is strung between telephone poles. A method for wiring electric wires and cables, which is characterized by inserting electric wires and cables other than those for power systems into this potable conduit.