JPS5834719B2 - Long body submarine guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a laying machine or a burying machine (hereinafter referred to as a laying/burying machine) on the seabed from a laying ship to a long body such as a submarine cable or a water pipe.

) This relates to a long body submarine guidance device that guides the seabed to the point where the ship is located.

This type of conventional long-body submarine guide device has a structure in which a large number of cylindrical cage-shaped short pipes are supported by a towline in a series of rows.

In this case, the cage-shaped short pipes are simply supported in a stacked state by being passed through the tow rope, so the cylindrical shape of the upper cage-shaped short pipe is applied to the lower cage-shaped short pipe one after another. Therefore, the cage-shaped short tube at the bottom was made to have a sturdy structure with excellent strength to prevent breakage.

However, such a guide device has a disadvantage in that it is very heavy and requires a lot of time and effort when it is put into the sea and when it is recovered on a laying ship.

Furthermore, since a large number of cage-shaped short pipes are used, there is a drawback that a very large storage space is required on the laying ship.

An object of the present invention is to provide an elongated submarine guide device that is light in weight, can be easily put into the sea and retrieved onto a laying ship, and can reduce the storage space on a laying ship. It is in.

The long-body submarine guide device according to the present invention is a foldable tubular guide comprising a large number of guide rings, each of which has a single ring-shaped body, which are foldably connected at predetermined intervals by a flexible connecting body. The present invention is characterized in that it includes a main body and a tow rope that slidably supports the foldable tubular guide main body along its side surface.

In such an elongated submarine guide device, the flexible connecting body is bent to fold the collapsible tubular guide body during transportation or the like.

In this way, the elongated submarine guide device can be housed in a much smaller space than in the past.

When in use, the laying/burying machine is connected to the tip of the towline and the flexible connector, and the laying/burying machine is thrown into the sea while extending the towline and the foldable tubular guide body, and the laying/burying machine is inserted into the sea to connect the laying ship and the seabed. The cable is connected to the laying/burying machine using a foldable tubular guiding body, and a submarine cable or the like is passed through it and guided to the seabed for laying or burying work.

When the laying or burying work is completed, the foldable tubular guide main body is pulled up while taking over the tow rope on board the laying ship, and the folding tubular guide main body and the laying/burying machine are recovered on board the laying ship by successively folding them. .

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the elongated submarine guide device 1 of this embodiment carries out elongated bodies 4 such as submarine cables and water pipes from a laying ship 3 floating on the sea surface 2 to a seabed 5. It is used to guide the user to the burial machine 6.

This elongated submarine guide device 1 has a plurality of guide rings 7 each consisting of one ring-shaped body connected at predetermined intervals by flexible connecting bodies 8.8' so as to be foldable. A foldable tubular guide body 9 consisting of a foldable tubular guide body 9;
The structure includes a pair of tow ropes io, io, which are slidably supported along the sides of the tow rope.

The laying ship 3 includes a caterpillar-type guide body supply/accommodation device 11 that accommodates the foldable tubular guide body 1 in a folded state and sends it out while being stretched when in use, and a towline io, which winds up and sends out the tow line io. The winch 12 , the elongate object storage section 13 that accommodates the elongate object 4 , and the elongate object storage section 1
A turn sheave 14 for changing the direction of the elongated body 4 above the turn sheave 3 is mounted.

FIGS. 3 and 4 show an example of a specific structure of the foldable tubular guide body 9. FIG.

The guide ring 7 is constructed by connecting tubular or rod-shaped materials 7a to 7d made of metal such as aluminum, iron, or plastic into a single ring-shaped body.

When pipes are used as the materials 7a to 7d, it is preferable to seal both ends of each pipe to prevent seawater from entering.

Top and bottom material? Fixtures 15 for fixing the flexible connector 8 are attached to a and 7b, respectively.

What material is this fixture 15 made of? a, 7b, a second clamping member 15b which clamps the flexible connector 8 together with this member, and a screw threaded into the first clamping member 15a through the second clamping member 15b. The flexible connecting body 8 is fixed to the guide ring 7 by tightening the bolts 15c.

A support ring 16 is fixed to each of the left and right materials 7c and 7di<, and a tow rope 10 is slidably passed through each support ring 16.
Each guide ring 9 is slidably supported by this tow rope 10.

As the flexible connector 8, for example, a plastic rope such as a polyamide synthetic fiber rope, a hemp rope, or the like is used.

As the tow rope 10, for example, a steel rope, a plastic rope, a hemp rope, etc. are used.

When such a long body submarine guide device 1 is transported, as shown in the upper right part of FIGS. Fold it.

At this time, the towline 4 is wound around the winch 12.

In this way, the elongated submarine guide device 1 can be housed in a much smaller space than conventional ones.

When in use, the laying/burying machine 6 is connected to the tips of the tow rope 10 and the flexible connector 8, and the winch 14 and guide main supply/burying machine 6 are
The accommodation device 11 is driven to extend the tow line 10 and the folding tubular guiding body 9 is extended while the laying/burying machine 6 is thrown into the sea and used in the state shown in FIGS. 1 and 2.

The elongated body 4 is laid or buried in the seabed 5 by being pulled by the laying/burying machine 6 via the towline 10 in the laying ship 3 and letting out the elongated body 4.

In this case, the elongated body 4 is guided through the folded tubular guiding body 9 to the laying/burying machine 6, so that the towline 1 becomes slack.
There is no significant deviation from 0.

In addition, each guide ring 7 has a flexible connecting body 8 at the upper and lower parts.
Since the guide rings are connected at , it is possible to effectively prevent the guide ring interval from being changed due to friction of the elongated body 4.

When the laying/burying machine 6 is retrieved on the laying ship 3 after laying or burying, the winch 12 winds up the towline 10 while driving the guiding body tying/accommodating device 11 to remove the foldable tubular guide. The main body 9 is folded and the laying/burying machine 6 is gradually pulled up.

As explained above, the uninvented elongated body submarine guiding device is a folding system in which a large number of guide rings, each consisting of one ring-shaped body, are foldably connected at predetermined intervals by flexible connecting bodies. Since it uses a type tubular guide main body, it can be folded to make it much more compact than the conventional type, so the storage space on board the ship is also reduced, and it is easy to handle.

In addition, in the foldable tubular guide main body, each guide ring is composed of one ring-shaped body, and these are connected at predetermined intervals by flexible connecting bodies so that they can be folded. It is much lighter than the conventional method, which connects cage-shaped short pipes with connecting fittings, and can be easily thrown into the sea and recovered on board a ship.

Furthermore, since the folding tubular guide body is slidable relative to the tow rope, the folding tubular guide body can be easily extended and retracted using the tow rope as a guide.

In addition, in the present invention, since a flexible connecting body is used as a connecting means for each guide ring, the structure is simpler than when a link or the like is used as a connecting means, and the connecting work is also easier. Moreover, it has the advantage that it does not easily break down even if it is repeatedly folded.

[Brief explanation of the drawing]

FIGS. 1 and 2 are a plan view and a side view of an embodiment of the long body submarine guide device according to the present invention in use, and FIGS. 3 and 4 are shown in FIGS. 1 and 2. FIG. 2 is an enlarged front view and side view of a part of the guide device. 1... Long body submarine guide device, 3... Laying vessel, 4...
・Long body, 5... Seabed, 6... Laying/burying machine, 1.
... Guide ring, 8 ... Flexible connection body, 9 ... Foldable tubular guide main body, 10 ... Tow rope.

Claims (1)

[Scope of Claims] 1. A foldable tubular guide body comprising a plurality of guide rings each consisting of one ring-shaped body, which are foldably connected at predetermined intervals by flexible connecting bodies; An elongated submarine guide device comprising a tow rope that slidably supports a foldable tubular guide main body along its side surface. 2. The elongated submarine guiding device according to claim 1, wherein a metal tube ring is used as the guide ring. 3. The elongated body submarine guiding device according to claim 1, wherein a flexible rope is used as the flexible connecting body. 4. The elongated submarine body according to claim 1, wherein the foldable tubular guide main body is slidably supported on the tow rope by a support ring at a portion of the guide ring. Guidance device. 5. A patent characterized in that the upper and lower portions of each guide ring are connected to each other by the flexible connecting body, and the left and right portions are slidably supported by the pair of tow ropes. An elongated submarine guide device according to claim 1.