JPH0321163Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to an improvement in the terminal treatment structure of a cable having an armored wire, such as an underwater cable.

(Technical background of the invention and its problems) Figure 2 shows a conventional terminal treatment structure for underwater cables. That is, the underwater cable includes a plurality of cable cores 1 and a plurality of armored iron wires 2 provided thereon to protect the cable cores 1, and when laying on the seabed etc., a cap is attached to the terminal of each cable core 1. 5, and then the ends of the exterior iron wire 2 are tied together with a binding wire 3. Next, the exterior iron wire 2
Wrap tape or the like around the binding part of the wire net 4 and cover the bottom cable end with the wire net 4.
Fix one end side on the exterior iron wire 2. Then, the metal fitting 4 attached to the tip of the wire net 4
A wire rope (not shown) is connected to a, and the wire rope is towed to lay the underwater cable on the seabed or the like.

By the way, when a tensile force is applied to the wire net 4, as shown by the arrow in FIG. 3
If the cables are simply tied together, the terminal tapered portion of one of the armored iron wires 2 will move along the longitudinal direction of the cable. Therefore, the end of the cable core 1 and the cap 5 may be crushed by the iron wire 2. When the end of the cable core 1 is crushed, a space is created inside the cable, so that the moved armored iron wire 2 is then depressed. Therefore, since a tensile force is applied only to the other armored iron wires 2 that have no dents, if a large traction force is applied to the wire net 4, the other armored iron wires 2 will break. That is, conventionally, when a tensile force of about 2 tons or more was applied, breakage often occurred in the armored iron wire 2.

As shown in FIG. 3, the ends of the armored iron wires 2 are bundled, a sleeve 6 is crimped or welded onto this bundle to integrate the bundle, and then a pooling cap 7 is screwed onto the circumferential surface of the sleeve 6. It is also practiced to apply a traction force to the pooling cap 7. Although this terminal treatment structure applies approximately the same tensile force to the armored iron wire 2, crimping and welding the sleeve 6 takes a lot of time and effort, and the material cost is high.Moreover, it requires a crimping device, etc., so the equipment is difficult to use. It becomes a big deal.

(Objective of the invention) An object of the invention is to provide a terminal processing structure for a cable having an armored wire, which can be easily assembled with simple equipment and has an inexpensive structure.

(Summary of the invention) The present invention is characterized in that the binding portion of the exterior wire is molded with resin and integrated.

(Embodiments of the invention) Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

FIG. 1 shows a terminal treatment structure for an underwater cable according to the present invention, in which a cap 5 made of metal or plastic is attached to the end of a cable core 1 constituting the underwater cable. The terminals of the plurality of armored iron wires 2 on the cable core 1 are tied together with a bind wire 3, thereby forming an armored iron wire binding portion 2a. This exterior iron wire binding portion 2a is integrally molded with epoxy resin 8. This epoxy resin 8 extends to the terminal tapered portion of the armored iron wire 2, and also integrates this tapered portion. A wire net 4 is placed over the terminal of the exterior iron wire 2 and the epoxy resin 8.
One end of this wire net 4 is fixed on the exterior iron wire 2, and a metal fitting 4a is attached to the other end.

Next, the operation of the present invention will be explained.

When a traction force is applied to the wire net 4 with a wire rope (not shown) connected to the metal fitting 4a,
A pressing force is applied to the exterior iron wire 2 inward of the cable.
However, the exterior iron wire binding portion 2a is made of epoxy resin 8.
Since it is integrated at
The cable does not move in the longitudinal direction of the cable, so the terminal of the cable core 1 and the cap 5 are not crushed.
Therefore, since no dents occur in the armored iron wire 2, tensile force is applied to the armored iron wire 2 almost equally. Moreover, if the tapered surface of the armored iron wire 2 is also integrated with the epoxy resin 8 as in this embodiment, dents in the armored iron wire 2 can be more completely prevented.

In addition, since the exterior wire binding portion 2a is simply integrated with the epoxy resin 8, the material cost is low, and
In addition, terminal processing can be performed in a short time, and large-scale equipment is not required.

By the way, when the exterior iron wire binding part 2a is integrated with the epoxy resin 8, the exterior iron wire 2 will not break even if a tensile force of about 6 tons is applied. Therefore, even a long underwater cable with a large diameter can be easily laid.

In the above embodiment, an underwater cable having an armored iron wire 2 is shown, but the present invention can also be applied to an underwater cable using copper wire, FRP wire, etc. as the armor wire, or a cable having other armor wires. Of course, it can be applied.

(Effects of the invention) According to the invention, by integrating the outer wire binding part with resin, it is possible not only to prevent the cable core from being crushed, but also to apply tensile force evenly to the outer wire. . Therefore, even if a large traction force is applied, the sheathed wire will not break, so even large-diameter underwater cables, long underwater cables, etc. can be easily laid. In addition, since they are simply integrated using resin, material costs and equipment costs can be reduced, and the terminal processing section can be assembled with good workability.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a terminal treatment structure for a submarine cable according to the present invention, and FIGS. 2 and 3 are sectional views showing a conventional terminal treatment structure for a submarine cable. 1...Cable core, 2...Exterior iron wire, 2a...
Exterior iron wire binding part, 3... Bind wire, 4... Wire net, 8... Epoxy resin.

Claims (1)

[Scope of utility model registration request] The cable includes an armored wire binding section formed by bundling terminal ends of a plurality of armored wires provided on a cable core, and a wire net that covers the terminals of the plurality of armored wires and the armored wire binding section, and A cable terminal processing structure having an armored wire in which one end of the wire net is fixed on the plurality of armored wires and a metal fitting for applying a tensile force is attached to the other end, wherein the armored wire binding part is A cable terminal processing structure having an exterior wire characterized by being integrated with resin.