JP3819831B2 - Feeding out the long body for laying undersea - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of feeding a long body that mainly feeds a long body to the seabed in order to lay an electric power, a communication cable, a water pipe, and the like laid on the seabed (water bottom).
[0002]
[Prior art]
2. Description of the Related Art Conventionally, cable laying trolleys for laying various cables for electric power and communication, various pipes such as water pipes and oil pipes on the sea floor and the water bottom are known. The cable laying trolley has a shallow draft structure with a substantially flat upper surface of a desired area, and a cable storage device for storing cables or pipes in a coil shape on the upper surface of the trolley, and the cable A cable feeding device that feeds the water into the sea is disposed.
[0003]
For cable laying trolleys, for example, when performing laying work to connect communication cables etc. from one landing point to the next landing point one after another in the form of a network, sometimes the specifications of cables to be laid differ between landing points There is a case. In such a case, the long body is coiled and accommodated in a container called a pan or container in which the long body is coiled on the laying table ship, and the long body is unwound from the coiled container. It is known to perform laying work. (For example, refer to Patent Document 1).
[0004]
In such a case, in order to increase the efficiency of cable laying work, the cable specifications and the length of use are determined in the order of laying in advance, and the cables can be coiled into one large container in order and the cables can be continuously taken out. Wrap it around. Then, the cable pan (13) coiled as shown in FIG. 3 is mounted on a table (12) installed on the laying base boat (1). Then, the cable (53) is drawn out from the cable pan (13) to perform the laying work.
[0005]
[Patent Document 1]
JP-A-57-137788 (page 1-3, Fig. 1-2)
[0006]
[Problems to be solved by the invention]
However, since a plurality of cables are coiled into a single container in the order in which such conventional cables are laid in advance and used continuously, for example, in the case where the current at the landing point of the cable is intense Will have to wait until the tide has calmed down before resuming work, and work in the meantime will be suspended. In addition, if there are obstacles such as laver nets, oyster culture troughs, and rocks at the landing point of the cable, it is necessary to postpone the construction work until the obstacles are removed. In other words, as described above, since the cable pan is coiled in the order in which it is laid, there is a situation where it is impossible to pull out and use the cable wound below the coil first when such a problem occurs. It was. Therefore, for cable laying, it has been desired that the cable can be laid at any time regardless of the surrounding environment conditions at the landing point.
[0007]
Accordingly, an object of the present invention is to provide a cable laying method in which a cable specification according to a purpose of use can be freely selected from a pan containing a plurality of cables having different specifications as required, and the cable can be fed to a feeding device. Is to provide.
[0008]
[Means for Solving the Problems]
Means taken by the present invention to solve the above problem includes a circular turntable installed on the upper surface of the carriage and freely rotating, and a plurality of cable pans containing cables, on the turntable. Place a plurality of cable pans containing cables, rotate the turntable, select any cable pan and move it to the ship's outboard port, and route the cable from the selected cable pan through the ship's outboard The cable is fed to the cable feeding device, and the cable is fed and laid.
[0009]
The coil is placed on the turntable in a packaged state during cable transportation accommodated in a cable pan.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described in detail below. This method of paying out a long body for laying a seabed includes a circular turntable whose structure is installed on the upper surface of a carriage and rotates freely, and a plurality of cable pans that accommodate cables, on the turntable. Place a plurality of cable pans containing cables, rotate the turntable, select any cable pan and move it to the ship's outboard port, and route the cable from the selected cable pan through the ship's outboard The cable is fed out to the cable feeding device and then laid out.
[0011]
The coil is in a packaged state when the cable is accommodated in a cable pan, and is placed on the turntable in the packaged state.
[0012]
【Example】
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view of a cable feeding device according to the present invention as viewed from the top of a trolley, and FIG. It is a figure. FIG. 3 is a view of a conventional cable feeding device as seen from the upper surface of the carriage.
[0013]
In FIG. 1, (52) is a relatively large turntable arranged at a substantially central position on the carriage (1), and this carriage (1) is a DGPS (Differential Global Positioning System) controlled by a computer. A ship maneuvering support device employing a satellite-based positioning system such as the above is provided, and the ship maneuvering support device is a system that can always observe the position of the trolley (1) with high accuracy. In addition, at least two of these trolleys (1) are arranged on both sides with a predetermined interval, and a total of four are installed, and a thruster (20) is installed to keep the trolley (1) stably in place. The thruster (20) is controlled based on information from the boat maneuvering support apparatus.
[0014]
In one embodiment of the present invention, on a circular turntable (52) that is installed on the upper surface of the carriage (1) and freely rotates, a fence (31 ′) that supports the cable pan by surrounding the fence with a fence. And (32 ′), the cable pan (31) is accommodated in the fence (31 ′), and the cable pan (32) is accommodated in the fence (32 ′). These cable pans are, for example, a cable pan (31) wound with a cable laid out from point A to point B, and cable pan (32) laid out from point B to point C. A cable is wound.
[0015]
Under the conditions for laying as described above, the state shown in FIG. 1 is drawn from the cable pan (31) as a cable for laying the cable from point A to point B. As described above, in situations where it is not possible to lay out immediately, the landing at this point is postponed, the work is moved to point B, which is the next work point, and the cable is laid from point B to point C. It can be performed.
[0016]
These work states will be described in detail. First, when the trolley (1) arrives at the work site at point A, which is the destination point, by the tugboat, the trolley (1) is thruster to moor at a fixed position for the work. Control (20) and place it in its place. When the carrier (1) is moored in place, the terminal of the coil is formed from the cable pan (31) to the vessel (38) assembled on the carrier (1). A cable is fed out from the guideway and stern (not shown) to the sea through these feeding devices and laying is performed.
[0017]
However, if it is determined that it is difficult to land the cable at this point due to various circumstances, it immediately moves to the B point, which is the next landing point. At this time, the cable of the specification used at this point B is wound around the cable pan (32), so the cable pan (32) is moved to the lower side of the warship (38) by rotating the turntable (52). And fix. Then, the terminal end of the cable (35) is pulled out from the cable pan (32), and the cable can be fed out from the stern via a cable unwinding device (38) and a cable unwinding device (not shown).
[0018]
Similarly, if there are many points where cables are to be laid and the cable specifications are different, it is sufficient to install the cable pan on the upper surface of the turntable (52) in advance. There is no need to rewind the container, for example, the installation is completed by installing the coil on the upper surface of the turntable (52) in the packaged state when transporting the cable housed in the cable pan, further improving efficiency. be able to.
[0019]
【The invention's effect】
As has been described above, according to the method of extending the submarine laying long body of the present invention, a circular turntable that is installed on the upper surface of the trolley and rotates freely, and a plurality of cables that accommodate cables. A plurality of cable pans containing cables are placed on the turntable, and the turntable is rotated to select an arbitrary cable pan and move it to the takeout port of the warship, the selection Since the cable was sent from the cable pan to the cable feeding device through the warship, the cable was fed out and laid, for example, when the surrounding environment situation at the landing point was bad and the work was not interrupted, Immediately after moving to the next landing place, it is possible to obtain the effect that the cable according to the specification to be laid at that place can be pulled out and laid.
[0020]
Further, since the coil is in a packaged state when transporting the cable accommodated in the cable pan, and is placed on the turntable in the packaged state, the labor for removing the coil is saved and the work efficiency is greatly reduced. The effect of improving can be acquired.
[Brief description of the drawings]
FIG. 1 is a view of a cable feeding device according to the present invention as viewed from the upper surface of a carriage.
FIG. 2 is a side view of the state of FIG.
FIG. 3 is a view of a conventional cable feeding device as seen from the upper surface of the carriage.
[Explanation of symbols]
(1) trolley
(20) Thruster
(31) Cable pan
(32) Cable pan
(35) Cable
(38) Warship

Claims (2)

The turntable includes a circular turntable that is installed on the upper surface of the trolley and rotates freely, and a plurality of cable pans that accommodate cables. A plurality of cable pans that accommodate cables are placed on the turntable, and the turntable Rotate to select an arbitrary cable pan and move it to the loading port of the ship's armor, and send the cable from the selected cable pan to the cable feeder via the ship's armor to unwind and install the cable. A method for paying out a long body for laying a seabed, characterized in that 2. The seabed laying length according to claim 1, wherein the coil is in a packaged state when transporting a cable housed in a cable pan, and is placed on the turntable in the packaged state. How to extend the scale.

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