Method of storing and shipping cable

Abstract

To provide a method for storing and shipping a cable capable of quickly responding to a cable supply request from a different laying site at a low cost, and suppressing an influence received by a gradient and unevenness of a road surface.SOLUTION: The method for storing and shipping cables includes a storing step of storing a plurality of cables and a shipping step of shipping the stored cables, wherein the storing step includes a first step of inserting a turntable into an insertion opening of a cable container body and placing a cable container on the turntable, a second step of winding the cables around the cable container, a third step of removing the turntable, and a fourth step of storing the cable container, and the shipping step includes a fifth step of selecting a specific cable container, inserting the turntable into an insertion opening of the specific cable container, and placing the specific cable container on the turntable, and a sixth step of paying out the specific cable from the specific cable container.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present disclosure relates to a cable storage and shipping method for storing cables in a predetermined location and shipping the cables in response to a shipping request. [Background technology]

[0002] Conventionally, after a large cable such as a submarine cable is manufactured, when it is transported to the site where it is to be laid, the cable is wound around a turntable mounted on a cable-laying barge from a cable factory, and the cable is loaded onto the barge and transported to the site. For example, Patent Document 1 discloses an underwater cable-laying barge equipped with a turntable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-217218 Summary of the Invention [Problem to be solved by the invention]

[0004] In the cable laying barge of Patent Document 1, the cable is wound and stored in a cable storage device equipped with a turntable from the factory, and when the barge arrives at the site, the turntable is rotated to unwind the cable stored in the cable storage device and throw the cable into the water.

[0005] To load a cable onto such a cable-laying barge and transport it to the site, the cable stored on land must be wound and stored in a cable storage device on the barge. When temporarily storing the cable on land, it is conceivable to store the cable in layers in a cable container equipped with a turntable. This allows the cable to be unwound from the cable container on land onto the ship by rotating the turntable on land.

[0006] However, when a cable that has already been laid on the seabed needs to be replaced, it is necessary to quickly supply a new cable to the site. To meet this requirement, cable factories must manufacture replacement cables in advance before the need for replacement arises.

[0007] However, when multiple different cables are manufactured in advance for cable replacement at different installation sites, the cables are sequentially loaded directly onto a turntable or wound and stored in a cable container on the turntable in a stacked manner. In this case, even if a request for shipping a lower-layer cable before a higher-layer cable on the turntable or cable container occurs, the lower-layer cable cannot be removed until the upper-layer cable is shipped first. Furthermore, preparing multiple turntables for each installation site increases the cost of storing the cables. Similar problems can occur when laying new cables, as well as when replacing cables, due to fluctuations in construction progress. Furthermore, when loading cables from a cable-laying barge into a cable container, it is possible to place the cable container or turntable on a cart and move it near the cable-laying barge. However, moving the cable container or turntable on a cart requires that the road surface along the travel route be smooth and even.

[0008] Therefore, one aspect of the present disclosure aims to provide a cable storage and shipping method that can respond to cable supply requests from different installation sites quickly and at low cost, while minimizing the effects of road surface gradients and unevenness. [Means for solving the problem]

[0009] A cable storage and shipping method according to one aspect of the present disclosure includes a storage step of storing a plurality of cables in each of a plurality of cable containers, each of the cable containers including a cable container body having an insertion opening disposed at the center in a plan view and a cable housing portion disposed horizontally outward of the insertion opening, and a receiving member disposed at the insertion opening and detachably coupled to the cable container body; and a shipping step of shipping the stored cables, wherein the storage step includes a first step of inserting a turntable into the insertion opening of an Nth cable container (N is a natural number) with the receiving member removed from the cable container body, coupling the receiving member to the cable container body, and placing the receiving member on the turntable to place the Nth cable container on the turntable; a second step of rotating the turntable to wind the Nth cable around the Nth cable container; and a shipping step of shipping the stored cables. and a fourth step of storing the Nth cable container from which the turntable has been removed together with the Nth cable, where N=1 to M (M is a natural number of 2 or more), and a set of the first step to the fourth step is repeated 1st to Mth times. The shipping step includes a fifth step of selecting, from the M cable containers from the first cable container to the Mth cable container, a specific cable container in which a specific cable for which a shipping request has occurred is wound, among the M stored cables from the first cable container to the Mth cable container, inserting the turntable into the insertion opening of the cable container body with the receiving member removed from the cable container body in the specific cable container, coupling the receiving member to the cable container body, and placing the receiving member on the turntable, thereby placing the specific cable container on the turntable, and a sixth step of rotating the turntable to pay out the specific cable from the specific cable container and load it into a cable housing of a transportation device. [Effects of the Invention]

[0010] According to one aspect of the present disclosure, multiple cables wound in the storage process are not stacked in the same cable container but are each housed in a different cable container. Therefore, even if a shipping request is made for any of the multiple cables being stored, the specific cable can be shipped by attaching a turntable to the specific cable container housing the specific cable for which a shipping request has been made and paying out the specific cable to the cable housing section of the transportation device. Therefore, regardless of which cable a shipping request is made, the shipping request can be met quickly. Furthermore, since the impact of road gradients and unevenness can be minimized, cables can be stored and shipped in a wider range of cable storage locations. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a front view showing a storage location where a cable container and a turntable are arranged, and a laying barge located close to the storage location, in a cable storage and shipping method according to a first embodiment. [Figure 2] FIG. 2 is a perspective view of the cable container of FIG. [Figure 3] FIG. 3 is a perspective view of the turntable. [Figure 4] 4 is a perspective view of the cable container and the turntable of FIG. 3 when the turntable is inserted into the cable container of FIG. 2. FIG. [Figure 5] Figure 5(a) is a side view of the cable container and the turntable with the turntable inserted into the insertion port of the cable container in Figure 4, and Figure 5(b) is a side view of the cable container and the turntable with the cable container lifted by a jack and the receiving member about to be attached. [Figure 6] FIG. 6 is a perspective view of the cable container, the turntable, and the receiving member in a state where the receiving member is attached inside the insertion opening of the cable container. [Figure 7]FIG. 7 is a side view of the cable container, the turntable, and the receiving member in a state where the cable container has been lowered from the jack and the jack has been removed. [Figure 8] FIG. 8 is a side view of the cable container, the turntable, and the receiving member in a state in which the turntable is rotationally driven and the cable is being wound up. [Figure 9] FIG. 9 is a front view of the cable container storage location and the cable laying barge in a state where the cable container is winding up the cable from the cable laying barge in FIG. [Figure 10] FIG. 10 is a front view of the storage location of the cable container and the cable laying barge in a state in which the cable unwound from the cable container in the storage location of FIG. 1 is wound into the cable housing section of the cable laying barge. [Figure 11] FIG. 11 is a flowchart illustrating the flow of a cable storage method. [Figure 12] FIG. 12 is a flowchart illustrating the flow of a cable shipping method. DETAILED DESCRIPTION OF THE INVENTION

[0012] (First embodiment) FIG. 1 is a front view showing a storage location 100 in which a cable container 2 and a turntable 3 are arranged, and a cable-laying barge 1 located near the storage location 100, in a cable-storing and shipping method according to a first embodiment. As shown in FIG. 1, the storage location 100 for cable C is located near a port where the cable-slaying barge 1 can moor, so that the cable C transported by the cable-slaying barge 1 can be stored on site. In other words, the storage location 100 is land adjacent to a quay facing the sea. The cable-slaying barge 1 is an example of transportation equipment for transporting cable C. The cable-slaying barge 1 has a cable housing unit 21, which is a cable container, and a turntable 22 that rotates the cable housing unit 21. The cable C manufactured in a cable factory is loaded into the cable housing unit 21 of the cable-slaying barge 1, and the cable-slaying barge 1 carrying the cable C travels to the storage location 100, where it unloads the cable C from the cable-slaying barge 1 into the storage location 100.

[0013] A plurality of cable containers 2 capable of storing cables C therein are arranged in the storage location 100. A turntable 3 is arranged in the storage location 100, which enters the cable container 2 and rotates the cable container 2 to wind or unwind the cables C. The number of turntables 3 is less than the number of cable containers 2. In this embodiment, the number of cable containers 2 is three, and the number of turntable 3 is one.

[0014] FIG. 2 is a perspective view of a cable container 2. As shown in FIG. 2, the cable container 2 includes a cable container main body 5 having an insertion opening 4 at its center in a plan view, and a receiving member 6 disposed at the insertion opening 4 and detachably fixed to the cable container main body 5 with a bolt B (see FIG. 6), which is an example of a fastener. The cable container main body 5 includes a cable accommodation section 7 that accommodates a cable C and a base section 8 that is provided below the cable accommodation section 7 and supports the cable accommodation section 7. The cable accommodation section 7 has an annular accommodation space X that accommodates the cable C. The cable accommodation section 7 also has a disk-shaped bottom wall section 9, an inner peripheral guide section 10 that protrudes upward from a radially inner portion of the bottom wall section 9, and an outer peripheral guide section 11 that protrudes upward from a radially outer portion of the bottom wall section 9. That is, the bottom wall section 9, the inner peripheral guide section 10, and the outer peripheral guide section 11 define an annular accommodation space X that is open upward. In this embodiment, the inner circumferential guide portion 10 and the outer circumferential guide portion 11 have a cylindrical shape that extends in the vertical direction. There is no bottom wall portion 9 inside the inner circumferential guide portion 10 in the cable housing portion 7, and an insertion opening 4 that penetrates the cable housing portion 7 in the vertical direction is formed. In other words, the inner circumferential portion 10a of the inner circumferential guide portion 10 in the cable housing portion 7 defines the insertion opening 4.

[0015] The base 8 is disposed between the bottom wall 9 of the cable housing 7 and the ground, and supports the cable housing 7 from below. The portion of the cable housing 7 where the insertion port 4 is formed is not supported by the base 8 and is open downward. In other words, the base 8 is not present directly below the portion of the insertion port 4 of the cable housing 7, and a turntable arrangement space Y is formed. The insertion port 4 of the cable housing 7 and the turntable arrangement space Y of the base 8 are sized to allow the turntable 3 (see FIG. 3) to be placed therein. The horizontal dimensions of the insertion port 4 and the turntable arrangement space Y are large enough to allow the turntable 3 to pass through, and are larger than the horizontal dimension of the turntable 3.

[0016] The base unit 8 has a jack arrangement space 8a. The jack arrangement space 8a is an inverted recess formed by cutting out the lower end of the base unit 8 upward. The jack arrangement space 8a is open in the horizontal direction. The jack arrangement space 8a is a space in which a jack 16 (see FIG. 5(b)) for lifting the cable container 2 can be placed.

[0017] The receiving member 6 has a plurality of beams 17, which extend radially and horizontally from the central axis L1. In this embodiment, the receiving member 6 has four beams 17, and the tip end 12 of each beam 17 abuts against the inner circumferential guide portion 10 of the cable housing portion 7 inside the insertion opening 4 and is fixed to the inner circumferential guide portion 10 with a bolt B. In this embodiment, the beams 17 are made of H-beam steel. Note that the receiving member 6 is not particularly limited as long as it is a member that can be detachably fixed to the cable container body 5 so as to partially or entirely block the insertion opening 4 of the cable container body 5 and can be stably placed on the turntable 3.

[0018] While the embodiment shown in FIG. 2 illustrates a configuration in which the inner guide portion 10 and the outer guide portion 11 have cylindrical shapes extending in the vertical direction, this is not limited to the above embodiment. The inner guide portion 10 and the outer guide portion 11 of the cable container 2 may be formed by combining multiple pipes. In this case, the receiving member 6 does not need to be fixed to the inner peripheral portion 10a of the inner guide portion 10 by the bolt B. For example, the distance from the central axis L1 to the tip end 12 of each of the beams 17 of the receiving member 6 may be increased, and the lower surfaces of the peripheral portions of the tip end 12 of the beams 17 may be abutted against the upper surface of the bottom wall portion 9 of the cable housing portion 7, and the lower surfaces of the beams 17 of the receiving member 6 and the upper surface of the bottom wall portion 9 of the cable housing portion 7 may be fastened in the vertical direction by bolts from below the bottom wall portion 9. The cable container body 5 may also have another configuration as long as it can accommodate the cable C in the housing space X.

[0019] FIG. 3 is a perspective view of the turntable 3. As shown in FIG. 3, the turntable 3 has a turntable portion 13, a base portion 14 arranged below the turntable portion 13, and a connection portion 15 arranged between the turntable portion 13 and the base portion 14 and rotatably connecting the turntable portion 13 to the base portion 14. The turntable portion 13 and the base portion 14 have a cylindrical shape. The turntable 3 has, for example, a drive portion that drives the turntable portion 13 to rotate relative to the base portion 14. The drive portion includes, for example, an electric motor. The drive portion rotates the turntable portion 13, causing the turntable portion 13 to rotate relative to the base portion 14.

[0020] Next, a storage process will be described in which the cable C loaded on the cable-laying barge 1 is received and stored in the cable container 2 arranged in the storage location 100.

[0021] As shown in FIG. 1 , when a cable-laying barge 1 carrying a cable C arrives at a port having a storage area 100, the cable C stored in the cable storage section 21 of the cable-laying barge 1 is reeled out toward a cable container 2 arranged in the storage area 100, and the cable container 2 arranged in the storage area 100 rotates to wind up the cable C and store the cable C in the storage space X of the cable container 2. The cable container 2 accommodating the cable C is stored in the storage area 100. The cable-laying barge 1 may transport different cables C multiple times, and different cable containers 2 in the storage area 100 may receive the cables C loaded on the cable-laying barge 1, repeating this process multiple times. In this way, multiple cable containers 2 each accommodating multiple different cables C are stored in the storage area 100. The cable-laying barge 1 transporting the cable C to the storage area 100 multiple times may be different each time, or it may be the same cable-laying barge.

[0022] Fig. 4 shows a perspective view of the cable container body 5 and the turntable 3 when the turntable 3 is being inserted into the cable container body 5. As shown in Fig. 4, the turntable 3 is inserted from above into the insertion opening 4 of the cable housing section 7 in the cable container body 5. In this embodiment, a crane 18 suspends the turntable 3 via a wire 19, and moves the turntable 3 while holding it. When the turntable 3 reaches a position above the insertion opening 4, the crane 18 lowers the turntable 3, and the turntable 3 is inserted into the insertion opening 4 from above.

[0023] 5(a) shows a side view of the cable container body 5 and the turntable 3 in a state where the turntable 3 is inserted into the insertion opening 4 in the cable housing portion 7 of the cable container body 5. In the state shown in FIG. 5(a), the cable container body 5 is placed directly on the ground, so the height of the upper end of the turntable 3 is higher than the height of the bottom wall portion 9 of the cable container body 5.

[0024] FIG. 5(b) shows a side view of the cable container body 5 and the turntable 3 in a state in which the cable container body 5 is being lifted by the jack 16 and the receiving member 6 is about to be attached. As shown in FIG. 5(b), the jack 16 is placed below the cable container body 5 and jacked up, thereby lifting the cable container body 5 upward. As a result, the cable container body 5 is raised above the ground. At this time, since the cable container body 5 is lifted, the height of the bottom wall portion 9 of the cable accommodation portion 7 in the cable container body 5 is approximately the same as the height of the upper end of the turntable 3. Therefore, inside the insertion opening 4, the inner peripheral portion 10a of the inner peripheral guide portion 10 is positioned higher than the upper end of the turntable 3. In this state, the receiving member 6 is attached to the inner peripheral portion 10a of the inner peripheral guide portion 10.

[0025] FIG. 6 is a perspective view of the cable container 2 in a state where the receiving member 6 is attached to the inner periphery 10a of the inner periphery guide portion 10 in the cable accommodation portion 7 of the cable container main body 5 inside the insertion opening 4. As shown in FIG. 6, since the cable container 2 is being lifted up by the jack 16, the turntable 3 is not present in the space inside the inner periphery 10a of the inner periphery guide portion 10, and the receiving member 6 is attached to the inner periphery 10a of the inner periphery guide portion 10 of the cable container 2. The receiving member 6 abuts against the inner periphery 10a of the inner periphery guide portion 10 of the cable container main body 5 at the tip end 12 of the beam 17, and they are connected to each other by a bolt B. In this embodiment, for example, a bolt hole is provided in the tip end 12 of the receiving member 6, and a bolt hole is provided in the inner periphery guide portion 10 of the cable container main body 5 at a position where the tip end 12 of the receiving member 6 abuts. By inserting bolts B into the bolt holes of the inner peripheral guide portion 10 and the receiving member 6, the cable container body 5 and the receiving member 6 are fastened to each other by the bolts. The cable container 2 is a combination of the cable container body 5 and the receiving member 6 connected to the cable container body 5. Note that the receiving member 6 may be connected to the cable container body 5 by other methods. For example, a receiving seat may be attached to the inner peripheral portion 10a of the inner peripheral guide portion 10 of the cable container body 5, the receiving member 6 may be attached to the receiving seat, and the inner peripheral portion 10a of the cable container body 5 and the receiving member 6 may be connected via the receiving seat. Furthermore, the receiving member 6 may be connected to the cable container body 5 by a configuration other than fastening with a fastener such as bolt B. For example, a convex portion protruding outward may be provided at the tip portion 12 of the beam 17 of the receiving member 6, and a concave portion may be provided in the inner peripheral guide portion 10 of the cable container body 5, and the receiving member 6 may be connected to the cable container body 5 by fitting the convex portion into the concave portion. The receiving member 6 may also be connected to the cable container body 5 by a locking mechanism so as to be unable to move relative to the cable container body 5. Furthermore, the inner peripheral portion 10a of the inner peripheral guide portion 10 of the cable container body 5 and the receiving member 6 may be connected by other methods. As long as the receiving member 6 is detachably coupled to the cable container body 5 so as to partially or entirely block the insertion opening 4 of the cable container body 5, the connection between the receiving member 6 and the cable container body 5 may be configured in other ways.

[0026] 7 shows a side view of the cable container body 5, the turntable 3, and the receiving member 6 in a state where the cable container body 5 has been lowered from the jack 16 and the jack 16 has been removed. As shown in FIG. 7, even when the jack 16 has been removed from the cable container 2, the underside of the receiving member 6 comes into contact with the turntable 3, and the cable container body 5 is supported by the turntable 3 via the receiving member 6, so that the cable container body 5 is floating above the ground. Therefore, the cable container 2 is supported by the rotating table portion 13 of the turntable 3.

[0027] Fig. 8 shows a side view of the cable container 2 and the turntable 3 in a state where the turntable 3 is driven to rotate and winding up the cable C. As shown in Fig. 8, when the jack 16 is removed, the cable container 2 is supported by the rotary table portion 13 of the turntable 3, and therefore, the cable container 2 can be rotated by driving the turntable 3 to rotate and rotating the rotary table portion 13.

[0028] 9 is a front view showing the state in which the cable container 2 in the storage location 100 is winding up the cable C from the laying barge 1. When the cable container 2 is rotated around the vertical axis with the tip of the cable C being unwound wound around the inner peripheral guide portion 10 of the cable container 2, the cable C loaded on the laying barge 1 moves toward the cable container 2, as shown in FIG. 9, and the cable C is wound up by the cable container. As a result, the cable C is stored in the storage space X of the cable container 2.

[0029] When winding of the cable C into the cable container 2 is completed, the receiving member 6 is removed from the cable container 2, and the turntable 3 is removed from the cable container body 5 of the cable container 2. When removing the turntable 3 from the cable container body 5, the steps of FIGS. 4 to 7 are performed in reverse order. When the turntable 3 is removed from the cable container body 5 of the cable container 2, the cable container 2 accommodating the cable C is placed at a predetermined position in the storage location 100 and stored there. While the cable container 2 is stored in the storage location 100, the receiving member 6 may be attached to the cable container body 5 or may be detached from the cable container body 5. The receiving member 6 may be attached to the cable container body 5 only when winding of the cable C into the cable container body 5 is being performed. Furthermore, in the cable storage step, the receiving member 6 may remain attached to the cable container body 5 throughout the entire time the cable container 2 is stored in the storage location 100 after winding the cable C. The cable C may be housed in the cable container main body 5, and after the turntable 3 is removed from the cable container 2, the receiving member 6 may be attached to the cable container main body 5, and the cable container 2 may be stored in this state in the storage location 100.

[0030] By repeating a set of steps, from winding up the cable C loaded on the laying barge 1 into the cable container 2 to placing the cable container 2 in a storage position in the storage area 100, M times, different cables C are stored in each of the M cable containers 2, and the M cable containers 2 are stored side by side in the storage area 100 (M is a natural number of 2 or more). In this case, the cable container 2 used in the Nth set out of the sets repeated M times is referred to as the Nth cable container (N is a natural number). The cable C stored in the Nth cable container is referred to as the Nth cable.

[0031] Next, a shipping process will be described in which a specific cable C (specific cable Ca) for which a shipping request has been issued among the multiple cables C stored in the storage location 100 is loaded onto the cable-laying barge 1 and shipped.

[0032] First, a specific cable Ca for which a shipping request has been issued is selected from among the M cables C from the first cable to the Mth cable stored in the storage location 100. Furthermore, in conjunction with the selection of the specific cable Ca, a cable container 2 (specific cable container 2a) containing the specific cable Ca is selected from the M cable containers 2 from the first cable container 2 to the Mth cable container 2. The specific cable container 2a containing the selected specific cable Ca is placed on the turntable 3. This procedure is similar to the procedure shown in FIGS. 4 to 7, and therefore a detailed description thereof will be omitted.

[0033] Figure 10 shows a front view of a storage location 100 and a laying barge nearby when a specific cable Ca unwound from a specific cable container 2a in the storage location 100 is wound into the cable housing section 21 of the laying barge 1. As shown in Figure 10, with the specific cable container 2a placed on the turntable 3, the turntable section 13 of the turntable 3 is rotated to rotate the specific cable container 2a, thereby unwound from the specific cable container 2a toward the cable housing section 21 of the laying barge 1. The specific cable Ca unwound from the specific cable container 2a is wound into the cable housing section 21 of the laying barge 1 and loaded onto the laying barge 1. The rotation direction of the turntable 3 during shipping is opposite to the rotation direction of the turntable 3 during storage.

[0034] Also in the shipping process of the specific cable Ca, after the specific cable Ca housed in the cable container body 5 has been entirely unwound, the receiving member 6 may be attached to the cable container body 5 or may be detached from the cable container body 5. The receiving member 6 may be attached to the cable container body 5 only when the specific cable Ca is being unwound from the cable container body 5. Furthermore, in the cable shipping process, the receiving member 6 may remain attached to the cable container body 5 throughout the entire time the specific cable container 2a is stored in the storage location 100 after the specific cable Ca housed in the cable container body 5 has been unwound and the turntable 3 has been removed from the specific cable container 2a, and the receiving member 6 may be attached to the cable container body 5 after the specific cable Ca housed in the cable container body 5 has been unwound and the turntable 3 has been removed from the specific cable container 2a, and the specific cable container 2a may be stored in the storage location 100 in this state.

[0035] FIG. 11 shows a flowchart illustrating the flow of the cable storage method. As shown in FIG. 11, N is initially set to 1 (step S1). Next, the turntable 3 is inserted into the insertion opening 4 of the cable container body 5 of the first cable container 2 (step S2). Next, the receiving member 6 is attached to the inner peripheral portion 10a of the inner peripheral guide portion 10 of the cable container body 5 of the first cable container 2, and in this state, the receiving member 6 of the first cable container 2 is placed on the turntable 3 (step S3). With the first cable container 2 placed on the turntable 3, the turntable 3 is rotated (step S4). This rotates the first cable container 2, and the cable C is wound around the first cable container 2. Next, it is determined whether the winding of the first cable C has been completed (step S5). If the winding of the first cable C around the first cable container 2 has not been completed, the winding of the first cable C around the first cable container 2 continues. When winding of the first cable C into the first cable container 2 is completed, the receiving member 6 is removed from the cable container body 5 in the reverse order of the order described with reference to Figures 4 to 7, and the turntable 3 is removed from the first cable container 2 (step S6). The first cable container 2 containing the first cable C is stored in the storage location 100 (step S7).

[0036] If winding of the first to Mth cables C has not been completed, N is incremented (step S9), and steps S2 to S7 are performed. If winding of the first to Mth cables C has been completed, the process ends.

[0037] Next, we will explain the shipping process for a specific cable C (specific cable Ca) among the multiple cables C stored in the storage location 100, for which a shipping request has been made, when the cable C is unwound, loaded onto the laying barge 1, and shipped.

[0038] FIG. 12 is a flowchart illustrating the flow of the cable shipping method. As shown in FIG. 12, when a shipping request is made for any of the cables C stored in the storage location 100 (Step S11: Y), the turntable 3 is inserted into the insertion opening 4 of the specific cable container 2a containing the specific cable Ca for which the shipping request has been made (Step S12). Next, a receiving member 6 is attached to the specific cable container 2a, and the specific cable container 2a is placed on the turntable 3 (Step S13). Next, the turntable 3 is rotated to pay out the specific cable Ca from the specific cable container 2a toward the cable-laying barge 1 (Step S14). When paying out the specific cable Ca from the specific cable container 2a toward the cable-laying barge 1, the steps of attaching the receiving member 6 to the specific cable container 2a and placing the specific cable container 2a with the attached receiving member 6 on the turntable 3 are the same as those shown in FIGS. 4 to 7. When the payout of the specific cable Ca from the specific cable container 2a is completed (Step S15: Y), the process ends.

[0039] With the specific cable container 2a placed on the turntable 3, the rotary table portion 13 of the turntable 3 is rotated to rotate the specific cable container 2a, thereby unwinding the specific cable Ca from the specific cable container 2a toward the cable housing portion 21 of the laying barge 1. The specific cable Ca unwound from the specific cable container 2a is wound into the cable housing portion 21 of the laying barge 1 and loaded onto the laying barge 1. The rotation direction of the turntable 3 during shipping is opposite to the rotation direction of the turntable 3 during storage.

[0040] According to the method described above, the first to Mth cables C stored in the storage location 100 are not stacked in the same cable container 2, but the first to Mth cables C are each housed in a different cable container 2. Therefore, even if a shipping request occurs for any of the first to Mth cables C being stored, the shipping request can be quickly met by attaching the turntable 3 to the specific cable container 2a that houses the specific cable Ca for which a shipping request has occurred.

[0041] Furthermore, after the turntable 3 is rotated and the cable container 2 winds up the cable C, the turntable 3 is removed from the cable container 2, and the cable container 2 is stored together with the cable C in the storage location 100, so one turntable 3 can be shared by multiple cable containers 2. Therefore, the number of turntables 3 required can be reduced, and the cost of storing the cable C can be reduced.

[0042] Furthermore, although the crane 18 is used in this embodiment, it is the turntable 3 that is moved by the crane 18. The turntable 3 is lighter than the cable container 2. Therefore, even if the crane 18 is used, it is only necessary to move the turntable 3 using the crane 18. Therefore, the turntable 3 can be moved by a crane with a lighter transportable weight to wind the cable C onto the cable container 2. Therefore, there is no need to use a special crane with a heavy transportable weight, and the waiting time required to arrange for a crane can be reduced. Furthermore, the increase in costs required for arranging a crane can be reduced. Furthermore, there is no need to secure space for installing a large crane, and the range of work sites where the cable C can be wound can be expanded. Furthermore, by reducing the energy consumption of the crane, the cost of operating the crane can be reduced.

[0043] Furthermore, according to this embodiment, the cable C can be wound onto the cable container 2 without using a cart. Since there is no need to move either the cable container or the turntable using a cart, the cable C can be wound onto the cable container 2 even in a location where the road surface is sloped or uneven, and the cable C can be wound onto the cable container 2 without being restricted by the condition of the ground.

[0044] Furthermore, according to this embodiment, since there is no need to move either the cable container or the turntable using a trolley, the cable C can be unwound from the cable container 2 to the laying barge 1 even in places where the road surface is sloped or uneven, and the cable C can be unwound to the laying barge 1 without being restricted by the ground conditions.

[0045] In the above embodiment, a configuration in which only one turntable 3 is used has been described, but the present invention is not limited to the above embodiment. If the turntable 3 is repeatedly used for different cable containers 2, thereby reducing the number of turntables 3 required, multiple turntables 3 may be used. Reducing the number of turntables 3 required makes it possible to reduce the costs associated with storing or shipping multiple cable containers 2.

[0046] In addition, in the above embodiment, an example in which three cable containers 2 are arranged in the storage location 100 has been described, but the present invention is not limited to the above embodiment. The number of cable containers 2 stored in the storage location 100 may be any number.

[0047] In the above embodiment, the cable C is transported by sea using the cable-laying barge 1 to the storage site 100, the specific cable Ca is paid out from the specific cable container 2a toward the cable-laying barge 1, the specific cable Ca is loaded onto the cable-laying barge 1, and the specific cable Ca is shipped to the destination by sea transport using the cable-laying barge 1. That is, a ship is exemplified as the transportation device for transporting the cable. However, this is not limited to the above embodiment. For example, a truck serving as the transportation device may be provided with a cable housing section for housing the cable C, and the cable C may be transported by land to the storage site 100 using the truck. Alternatively, the specific cable Ca may be paid out from the specific cable container 2a toward the cable housing section of the truck, the specific cable Ca may be loaded onto the truck, and the specific cable Ca may be shipped to the destination by land transport using the truck. Alternatively, the cable C may be transported to the storage site 100 by transportation device other than a truck, and the specific cable Ca may be shipped to the destination by transportation device other than a truck. In other words, the cable C may be transported to the storage location not only by sea transport but also by other transport methods, and the specific cable Ca may be shipped to the destination by other transport methods than sea transport.

[0048] As described above, the above-described embodiments have been described as examples of the technology disclosed in this application. However, the technology of the present disclosure is not limited to these embodiments and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made as appropriate. Furthermore, the components described in the above-described embodiments can be combined to create new embodiments. For example, some configurations or methods in one embodiment may be applied to other embodiments, and some configurations in one embodiment may be separated from other configurations in that embodiment and extracted as desired. Furthermore, the components described in the accompanying drawings and detailed description include not only components essential for solving the problem, but also components that are not essential for solving the problem, and are used to illustrate the technology.

[0049] Each of the following sections is a disclosure of a preferred embodiment.

[0050] [Item 1] a storage process for storing a plurality of cables in a plurality of cable containers, each of which includes a cable container body having an insertion opening disposed at the center in a plan view and a cable housing portion disposed horizontally outward from the insertion opening, and a receiving member disposed at the insertion opening and detachably coupled to the cable container body; a shipping step of shipping the stored cable, The storage step includes: a first step of inserting the turntable into the insertion opening of the cable container body in a state where the receiving member is removed from the cable container body of an Nth cable container (N is a natural number), connecting the receiving member to the cable container body, and placing the receiving member on the turntable to place the Nth cable container on the turntable; a second step of rotating the turntable to wind the Nth cable around the Nth cable container; a third step of removing the receiving member from the cable container body with respect to the N cable container in which the N cable has been wound, and relatively displacing the turntable to remove the turntable from the N cable container; a fourth step of storing the Nth cable container from which the turntable has been removed together with the Nth cable; N=1 to M (M is a natural number of 2 or more), and the set of the first step to the fourth step is repeated from the first to Mth times; The shipping step includes: a fifth step of selecting a specific cable container in which a specific cable for which a shipping request has occurred is wound from the M number of stored cables from the first cable container to the Mth cable container, and, in a state in which the receiving member of the specific cable container is removed from the cable container body, inserting the turntable into the insertion opening of the cable container body, connecting the receiving member to the cable container body, and placing the receiving member on the turntable, thereby placing the specific cable container on the turntable; and a sixth step of rotating the turntable to unwind the specific cable from the specific cable container and load it into a cable storage section of a transport device.

[0051] [Item 2] 2. The cable storage and shipping method according to item 1, wherein when inserting the turntable into the insertion opening, the turntable is suspended by a crane and inserted into the insertion opening from above.

[0052] [Item 3] When the receiving member is coupled to the N cable container body, The cable container body is placed on a jack, Lifting the cable container body upward with the jack, and then coupling the receiving member to an inner periphery defining the insertion opening of the cable container body so as to at least partially block the insertion opening of the cable container body; 3. The cable storage and shipping method according to item 1 or 2, further comprising lowering the Nth cable container from the jack. [Explanation of symbols]

[0053] 1. Laying barge 2 Cable Container 2a Specific Cable Container 3. Turntable 4 Insertion port 5 Cable container body 6 Receiving member 10 Inner guide part 10a Inner circumference 16 Jack 18 Crane B Bolt C Cable Ca specific cable 100 storage locations

Claims

1. a storage process for storing a plurality of cables in a plurality of cable containers, each of which includes a cable container body having an insertion opening disposed at the center in a plan view and a cable housing portion disposed horizontally outward from the insertion opening, and a receiving member disposed at the insertion opening and detachably coupled to the cable container body; a shipping step of shipping the stored cable, The storage step includes: a first step of inserting a turntable into the insertion opening of an Nth cable container (N is a natural number) with the receiving member removed from the cable container body, connecting the receiving member to the cable container body, and placing the receiving member on the turntable to place the Nth cable container on the turntable; a second step of rotating the turntable to wind an Nth cable around the Nth cable container; a third step of removing the receiving member from the cable container body with respect to the Nth cable container in which the Nth cable has been wound, and relatively displacing the turntable to remove the turntable from the Nth cable container; a fourth step of storing the Nth cable container from which the turntable has been removed together with the Nth cable, N=1 to M (M is a natural number of 2 or more), and the set of the first step to the fourth step is repeated from the first time to the Mth time; The shipping step includes: a fifth step of selecting a specific cable container in which a specific cable for which a shipping request has occurred is wound from the M number of stored cables from the first cable container to the Mth cable container, and, with the receiving member of the specific cable container removed from the cable container body, inserting the turntable into the insertion opening of the cable container body, connecting the receiving member to the cable container body, and placing the receiving member on the turntable, thereby placing the specific cable container on the turntable; and a sixth step of rotating the turntable to unwind the specific cable from the specific cable container and load it into a cable storage section of a transport device.

2. 2. The cable storage and shipping method according to claim 1, wherein when inserting the turntable into the insertion opening, the turntable is suspended by a crane and inserted into the insertion opening from above.

3. When the receiving member is coupled to the Nth cable container body, The cable container body is placed on a jack, Lifting the cable container body upward with the jack, and then coupling the receiving member to an inner periphery defining the insertion opening of the cable container body so as to at least partially block the insertion opening of the cable container body; 3. The cable storage and shipping method according to claim 1, further comprising lowering the Nth cable container from the jack.

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