JPS5846932B2 - Submarine cable anchorage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a miniaturized submarine cable anchoring device for anchoring submarine cables equipped with armored wires made of metal or reinforced plastic fibers.

An example of a conventional structure of a submarine cable anchoring device is shown in cross-section in FIG.

In the conventional structure, each of the armored wires 2 of the submarine cable 1 is passed through the center hole of the internal restraining body 3-1 in the restraining device and is connected to the U on the outer peripheral surface.
End line 2-1 of the exterior wire at the tip that was turned and made a U-turn
are connected to the exterior wire 2 with a bind wire 4 to keep the tension of the exterior wire 2 at bay.

Reference numeral 3 denotes the retaining fitting body; 5 indicates a round die-shaped plate for fixing the armored wire 2 to the retaining fitting main body 3; a hole in the center through which the submarine cable 1 is inserted; and a bent portion of the armored wire 2 on one outer surface; An annular groove 5-1 is provided with which the two contacts.

Reference numeral 6 indicates a holding bolt 7, a cable protection pipe, and 8 a boot.

With such a structure, the end line part 2 of the exterior wire that has been made a U-turn
- Since the tension is restrained by the mutual frictional force between the outer wire 1 and the outer wire 2, if the outer wire material has a relatively small coefficient of friction such as metal or plastic, the fastening section will be longer, and the fastening section of the outer wire will be longer. This method has disadvantages in that it cannot be done in the immediate vicinity of the U-turn portion of the armored wires, and that the fastening portions become thicker because the armored wires are laminated at the joints between the armored wires, resulting in an increase in the size of the anchoring device.

In order to eliminate the conventional drawbacks, the present invention provides a submarine cable anchorage device for anchoring a submarine cable equipped with an armored wire made of metal or reinforced plastic fiber, in which a ring with a circular cross section is disposed within the anchoring metal body, and The outer wire introduced into the retainer metal body is wound around the ring at least once, and a metal sleeve is caulked or fixed with adhesive to the tip of the wire to form a terminal portion, and a die-shaped wire is inserted into the retainer metal body. A circular plate is inserted, a plurality of holes are provided on the same circumference in the die-shaped disk, the terminal portion is inserted into the hole of the die-shaped disk, and the outer wire is inserted into the die-shaped disk together with the die-shaped disk. The ring wrapped around the sleeve is fixed to the retaining metal body with an elastic body interposed therebetween, the purpose of which is to shorten the length of the retaining device, reduce the force applied to the sleeve itself, and downsize the entire sleeve. It is in.

The present invention will be explained based on the drawings.

FIG. 2 shows a sectional view of the submarine cable anchoring device of the present invention.

In the figure, the same reference numerals as in FIG. 1 indicate the same parts.

9 is the retaining fitting main body, 9-1 is the bottom plate of the retaining fitting main body 9, 9
-2 is a cylindrical part provided on the bottom plate 9-1, 10 is a ring with a circular cross section, 11 is a metal sleeve, 12 is a rubber pad, 13 is a die-shaped disk, and 13-1 is on the same circumference as the die-shaped disk 13. A hole drilled in the hole is shown.

The present invention has a plate-shaped circular rubber pad 12 provided with a hole in the center for introducing the armored wire 2 and the submarine cable 1 into the internal bottom plate 9-1 of the retaining fitting main body 9, and a ring 10 inside the rubber pad 12.
is inserted, and the tension of the submarine cable 1 is set to 10 in the cylindrical part 9-2.
Introducing the armored wire 2 which is flat by 0%, wrap the tip of the armored wire 1 around the ring 10 at least once or more, and attach the metal sleeve 11 to the tip by caulking it, or fix it with adhesive to secure the end portion. Insert the die-shaped disc 13 into the clasp main body 9, insert the metal sleeve or the part 11 fixed with adhesive into the hole 13, and tighten the rubber pad 12 and the outer wire 2 with the presser bolt 6. The wound ring 10 and the die-shaped disc 13 are fixed to the retainer body 9.

The die-shaped disc 13 and the holding bolt 6 constitute a fixing member.

The present invention reduces the tension of the submarine cable 1 to 1 as in the above configuration.
By winding the sheathed wire 2 that is 00% flat around the ring 10, most of the tension is absorbed by the ring 10, and the remaining slight tension is transmitted to the metal sleeve 11.

At this time, the ring 10 that has absorbed the tension of the sheathed wire 2 is pressed against the retainer body 9 via the rubber pad 12, but the rubber pad 12 prevents direct contact between the sheathed wire 2 and the retainer body 9, so that the ring 10 Damage to the surface of the wound exterior wire 2 can be prevented.

Furthermore, by winding each of the outer wires 2 around the ring 10, most of the tension can be transmitted to the ring 10, so the tension applied to the metal sleeve 11 can be drastically reduced, and the metal sleeve 11 and the outer wire 2 can be caulked or bonded. The length can be shortened.

Conventionally, a long boot was required to protect the binding wire, which serves as a retaining portion for the exterior wire, but the present invention does not require protection, so the length of the boot can be shortened.

In this way, according to the anchoring device of the present invention, the tension of the armored wire can be maintained efficiently in a small space, so that the anchoring device can be downsized.

The mooring device of the present invention has the structure described above, in which the sheath wire applied around the submarine cable is wrapped around a ring with a circular cross section in the mooring device more than once, and the terminal portion is caulked with a metal sleeve or glued. Since the metal sleeve is fixed to the main body of the clasp, the tension of the sheathed wire can be efficiently absorbed in a small space, and the force applied to the sleeve is even greater than when the tip of the sheathed wire is bent 90 degrees. As a result, the length of the retainer device can be reduced to about 1/2, allowing for miniaturization.

[Brief explanation of the drawing]

FIG. 1 is a sectional view parallel to the longitudinal direction of a conventional submarine cable anchoring device, and FIG. 2 is a sectional view of the submarine cable anchoring device of the present invention. 1... Submarine cable, 2... Exterior wire,
6... Holder bolt, 3... Holding fitting body, 9-1... Bottom plate, 9-2... Cylindrical part, 7...・Rubber pad, 10...Ring with circular cross section, 11...Metal sleeve, 12.
...Rubber pad, 13...Dice-shaped disk, 13-1...-TL of die-shaped disk.

Claims (1)

[Claims] 1. In a submarine cable retaining device for retaining a submarine cable equipped with an armor wire made of metal or reinforced plastic fiber, etc., a ring with a circular cross section is disposed within the retaining metal body, and the submarine cable is introduced into the retaining metal body. Winding the outer wire around the ring at least once or more, caulking a metal sleeve to the tip of the wire or fixing it with adhesive to form a terminal portion, and inserting a die-shaped disc into the retainer body, The die-shaped disk is provided with a plurality of holes drilled on the same circumference, the end portion is inserted into the hole of the die-shaped disk, and the ring around which the outer wire is wound is attached together with the die-shaped disk. A submarine cable retaining device which is fixed to the retaining fitting main body with an elastic body interposed therebetween.