JPH0898380A - Fastening method for submarine cable - Google Patents

Abstract

PURPOSE: To facilitate a fastening work for submarine cables, and to provide a fastening method for submarine cables having a tensile strength near to that of base material for wire. CONSTITUTION: To strengthen submarine cable fastening force, the end part of sheathing wire 2 is spread and opened, and this part is pickled. And it is inserted radially into a wedge type vessel 12 having fixing metal fittings in the upper part and having a hole for inserting a cable core 1 in the center part. Then molten solder is cast into the vessel to fix it, and the upper part of the vessel is covered with a lid and fixed. A submarine cable is fastened in this way.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submarine cable armor, and more particularly to a method for holding armor iron wire.

[0002]

2. Description of the Related Art A conventional method of retaining a submarine cable will be described with reference to the drawings. In the cross-sectional view showing the configuration of the retaining device in FIG. 2, the armored iron wire 2 provided around the cable core 1 of the metal wire armored submarine cable is cut, and the end of the cut armored iron wire 2 is set to the central portion. Fold it back around a conical cone 3 having a hole for inserting the cable core 1, put the tip back on the armored iron wire 2 of the submarine cable 1 and lay them in parallel, and wind the wire 4 Turn and tie tightly to fix. A tape 5 is wound around the wire 4 to form a waterproof layer, and the portion thus formed is inserted into a funnel-shaped retaining metal fitting 6 which is covered with a lid 7 from above and screwed with a screw 8. It is fixed at 6. 9
Is a pin for alignment provided on the lid.

[0003]

In the method of retaining armor as described above, it is necessary to fold each of the armor iron wires of the submarine cable around the cone, which requires a long processing time, and the retaining metal is large. There is a problem that it is difficult to handle because it is heavy. At this time, since it is extremely difficult to bend the armored iron wire into the shape of the wedge-shaped cone, the bending condition between the armored iron wires varies. For this reason, play is inevitable in the initial pulling force. On the other hand, in the case of grounding, the paint applied to the armored iron wire is not removed, so that there is a problem that reliability is deteriorated.

The present invention has been made in view of the above circumstances, and provides an improved retaining method which simplifies the retaining operation of a submarine cable and has a retaining force up to a tensile strength close to that of an iron wire base material. With the goal.

[0005]

SUMMARY OF THE INVENTION In order to increase the detention force of a submarine cable, the present invention expands the end of the armored iron wire, pickles this part, and has a fixing metal fitting on the center. Insert it radially into a wedge-shaped container that has a hole for inserting the cable core in the part, pour the melted solder into the container and fix it, and cover the top of the container to fix it. This is a method of retaining submarine cables characterized by the above. Also, the container for fixing the armored iron wire has a hole for inserting the core of the submarine cable in the central part, and has a plurality of holes for inserting the end of the expanded armored iron wire in the bottom part, A submarine cable retention container, characterized in that it has a fixing metal fitting.

[0006]

[Function] The end of the armor iron wire of the submarine cable is expanded, and this portion is pickled to remove the paint and rust of the armor iron wire and spread it. The end of the armored iron wire is radially inserted into the hole at the bottom of the wedge-shaped container integrated with the fixing metal fitting, and the molten solder is poured into this part to integrally fix the armored iron wire and the container. . At this time, the wedge-shaped container has a hole at the center for inserting the cable core of the submarine cable,
Since the cable core is inserted here, even if the melted solder is poured in, the cable core is not damaged at all and can be fixed extremely firmly, and the work is simplified,
Grounding reliability is also improved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a method of retaining a submarine cable according to an embodiment. That is, the end of the armored iron wire 2 of the submarine cable is radially expanded from the cable core 1. The end of the armored iron wire 2 is pickled to remove paint and rust. Next, the fixing metal fitting 11 is provided on the upper portion and the cable core 1 is provided on the central portion.
The cable core 1 is inserted into a wedge-shaped container 12 having a hole 13 through which the hole 1 is inserted, and the hole 1 provided at the bottom of the container 12
Insert the ends of the armored iron wire 2 into 2a, respectively
By lowering, the ends of the armored iron wire 2 are inserted into the container 12 while expanding radially.

Next, the melted solder 14 is poured into the portion of the container 12 where the end of the armored iron wire 2 is inserted and fixed. At this time, the container 12 has a hole 1 through which the cable core is inserted.
3 is formed and the cable core 1 is inserted there, so that even if the melted solder is poured into the container 12, the cable core 1 is not damaged at all. Further, since paint and rust have been removed from the end of the armored iron wire 2 inserted into the container 12, the container 12 and the solder 14 are firmly integrated and fixed.

The upper portion of the wedge-shaped container 12 is covered with a disc-shaped lid 15 and fixed with screws 16. The fixing metal fitting 11 attached to the wedge-shaped container 12 is provided with a bolt hole, and the bolt is inserted through this hole to be fixed to a machine frame (not shown). Therefore, the armored iron wire 2 has no play, is easily grounded, and has a strong pulling force.
Further, the workability is excellent, and the work can be easily performed on site.

In order to further increase the tensile strength, the length of insertion of the armored iron wire into the container may be increased to increase the bonding force between the armored iron wire and the solder. The same effect can be obtained by using an alloy of lead, tin, zinc or the like other than the solder to be poured and fixed in the container.

[0011]

As described above, according to the method of retaining a submarine cable of the present invention, since it is fixed by solder or the like, the retention force is larger than that of the conventional one, and the retention force up to the strength of the iron wire base metal is increased. Is obtained. Further, the treatment of the armored iron wire is simple, there is no need to form a waterproof layer, and the working time can be greatly shortened. In addition, grounding is easy and reliability is improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a method of retaining a submarine cable according to an embodiment,

FIG. 2 is an explanatory view of a conventional method of retaining a submarine cable.

[Explanation of symbols]

 1 Cable Core 2 Armor Iron Wire 11 Fixing Metal 12 Wedge Container 13 Cable Core Insertion Hole 14 Solder 15 Lid

Claims (2)

[Claims] 1. In order to increase the detention force of a submarine cable,
Expand the end of the armored iron wire, pickle this part,
Radially insert into a wedge-shaped container with a fixing metal fitting in the upper part and a hole for inserting the cable core in the center, pour the molten solder into the container and fix it, and fix the upper part of the container A method of retaining a submarine cable, characterized in that the lid is fixed. 2. The container for fixing the armored iron wire has a hole for inserting the core of the submarine cable in the center and a plurality of holes for inserting the end of the expanded armored iron wire at the bottom. A container for holding a submarine cable, characterized in that it has a fixing metal fitting on the top.