JP7355413B1 - half-split protection tube - Google Patents

Abstract

An object of the present invention is to provide a half-split protection tube 200 that can stably transport a large number of tubes at once. SOLUTION: A main body part 210 exhibiting an elongated half-tube shape; a flange part 220 projecting outward in the radial direction of the half-tube shape from one end of the main body part 210; a dome portion 230 extending outward in the radial direction from the end opposite to the dome portion 230, which is a portion spanning the main body portion 210 and the dome portion 230, and a half-split tube. A pair of support parts 240 are provided at both ends of the shape in the width direction and configured to be able to support the load applied to the half-split protection tube 200, and a pair of support parts 240 are provided so as to extend from the dome part 230 toward the main body part 210 side. and a stand part 250 that is provided and configured to be able to receive a load, and the stand part 250 is provided at each of two locations spaced apart in the width direction by the distance between each support part 240 when seen in the width direction. A half-split protection tube 200 configured to be capable of receiving a load. [Selection diagram] Figure 3

Description

The present disclosure relates to half-split protective tubes.

Submarine protection pipes (hereinafter also referred to as "protection pipes") are used as pipes to protect offshore wind power generation power transmission cables and water transmission pipes (hereinafter also referred to as "submarine cables, etc.") from ocean currents. For example, Patent Document 1 discloses a protection tube in which a pair of half-split protection tubes each having a half-tube shape is arranged with their concave surfaces facing each other. This protection tube is formed by a worker assembling two half-split protection tubes underwater, and a large number of them are arranged in a state where they are connected along a submarine cable or the like.

JP 2019-122204 Publication

In the technique disclosed in Patent Document 1, when attaching a protection tube to a submarine cable or the like, it is necessary to transport a large number of half-split protection tubes and hand them over to an underwater worker. For this reason, there has been a need to be able to transport a large number of the halved protective tubes in bulk by ship. Here, in order to transport a large number of half-split protection tubes together by ship, it is necessary to put these half-split protection tubes in a stowed state. However, since the half-split protection tube has a half-tube shape, when transported by ship, the above-mentioned loading condition is likely to collapse due to the rocking of the ship, etc., and therefore, there remained an issue with the stability of transportation. .

The present disclosure provides a half-split protection tube that can be stably transported in bulk.

In order to solve the above problems, the present disclosure takes the following measures.

First of all, the first disclosure is a half-split protection tube that is a part of a submarine protection tube that protects a submarine cable or submarine piping by sandwiching the submarine cable or submarine piping between the two parts. a main body section having a split tube shape; a flange section extending radially outward in the half tube shape from one end of the main body section; a dome portion exhibiting a dome shape extending outward in the radial direction, wherein the dome portion of one half protection tube extends the flange portion of the other half protection tube in the radially outward direction. It is possible to put these half-split protective tubes in a connected state by wrapping them from the inside, and furthermore, it is a part that spans the main body part and the dome part, and both ends of the half-tube shape in the width direction. a pair of support portions each provided at each portion thereof and configured to be able to support the weight of the half-split protection tube and the load applied to the half-split protection tube; and a stand part forming a stand configured to be able to receive the load, and the stand part has two parts spaced apart in the width direction by a distance between the respective support parts when seen in the width direction. Each of the half-split protection tubes is configured to be able to receive the load, and by placing the support portion of the other half-split protection tube on the base portion of one half-split protection tube, these half-split protection tubes can be stacked. It is possible to do so.

The halved protection tube according to the first disclosure allows a large number of halved protection tubes to be transported together by a stacking method in which one halved protection tube is stacked with other halved protection tubes. At this time, one half-split protection tube supports the pair of support parts in the other half-split protection tube, respectively, at two locations spaced apart in the width direction of the half-split tube shape. This suppresses the other half-split protection tubes from swinging in the circumferential direction of their half-tube shape, thereby suppressing the stacked state from collapsing. Thereby, a large number of half-split protection tubes can be stacked and transported stably.

Here, the half-split protection tube according to the first disclosure may be the half-split protection tube according to the second disclosure, which will be described later. In the half-split protective tube according to the second disclosure, each of the support portions has a plate surface that extends outward in the radial direction along the half-split surface of the half-tube shape, and the plate surface includes: When the two half-split protection tubes constitute the submarine protection tube, a fastening hole is drilled to enable the supporting parts of these half-split protection tubes to be fastened together, and the base part has at least It has a mounting surface parallel to the half-split surface at the two locations, and it is possible to place at least a part of the plate surface of the other half-split protection tube on the mounting surface. It is something.

According to the half-split protective tube according to the second disclosure, the mounting surface on the platform and the plate surface on the support section are parallel to each other. As a result, the posture of the half-split protection tube on the side to be stacked matches the posture of the half-split protection tube on the side to be stacked, and another half-split protection tube is attached to this half-split protection tube on the side to be stacked. can be easily stacked.

Moreover, when stacking another half-split protection tube on one half-split protection tube, this one half-split protection tube similarly supports the other half-split protection tube with its surface. As a result, the other half-split protection tube is suppressed from tilting and/or swinging in the circumferential direction in its half-tube shape and in the axial direction in the same half-tube shape. Thereby, it is possible to improve the loading rate and stability when stacking a large number of half-split protection tubes.

In addition, the support part that receives a load in a stacked state can be used to connect two half-split protection pipes when configuring a submarine protection pipe.

Here, the half-split protection tube according to the first disclosure or the second disclosure may be the half-split protection tube according to the third disclosure described below. In the half-split protective tube according to the third disclosure, when the upper side in the stacked state is one side and the lower side is the other side, at least part of the dome part protrudes toward the one side from the base portion.

According to the half-split protection tube according to the third disclosure, when a plurality of half-split protection tubes are stacked, the inner surface of the dome part on the side to be stacked and the outside of the dome part on the side to be stacked. The surfaces can be brought into engagement with each other. Thereby, even when a large number of half-split protection tubes are transported in a stacked state, they can be transported more stably.

Here, the half-split protection tube according to the third disclosure may be the half-split protection tube according to the fourth disclosure, which will be described later. In the half-split protection tube according to the fourth disclosure, at least a portion of the main body portion protrudes toward the one side beyond the base portion.

According to the half-split protection tube according to the fourth disclosure, when a plurality of half-split protection tubes are stacked, the inner surface of the dome portion on the side to be stacked and the outer surface of the main body portion on the side to be stacked. The surfaces can be brought into engagement with each other. Thereby, even when a large number of half-split protection tubes are transported in a stacked state, they can be transported more stably.

By having each of the above-mentioned configurations, the present disclosure can provide a half-split protection tube that can stably transport a large number of them at once.

FIG. 2 is a perspective view of a half-split protection tube 200. 2 is a plan view of a half-split protection tube 200. FIG. FIG. 2 is a front view of a half-split protection tube 200. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3; FIG. It is an explanatory view of stacking half-split protection tubes 200 on a pallet P10. FIG. 6 is a plan view of FIG. 5 viewed from above. 4 is an explanatory diagram for fastening the half-split protection tube 200 shown in FIG. 3. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7; FIG. FIG. 2 is an explanatory diagram illustrating the use of the protection tube 100. It is an enlarged view of the X part of FIG. 4.

<First embodiment>
The half-split protection tube 200 according to the first embodiment of the present disclosure is a part for constructing the cylindrical protection tube 100, as shown in FIGS. 7 and 8. This protection tube 100 is constructed by sandwiching a submarine cable or the like C10, which includes at least one of a submarine cable and submarine piping, between two half-split protection tubes 200 from its outer circumferential side. In this embodiment, the entire half-split protection tube 200 is integrally formed of cast iron. Furthermore, the two half-split protection tubes 200 configured as parts of the protection tube 100 are of the same type. Therefore, the half-split protection tubes 200 can be stock-managed as one type.

<Configuration of half-split protection tube>
The half-split protection tube 200 includes a main body portion 210, a flange portion 220, and a dome portion 230, as shown in FIGS. 1 to 3.

<Main body configuration>
The main body portion 210 has an elongated half-tube shape. In this embodiment, the main body part 210 supports the own weight of the halved protection tube 200 and the load applied to the halved protection tube 200 by the halved surface 210A (see FIG. 3) in its halved tube shape. It is considered possible.

As shown in FIGS. 7 and 8, the main body portion 210 includes an outer surface 210B and an inner surface 210C, which are used as the outer surface 110B and the inner surface 110C of the cylindrical portion 110 when forming the protective tube 100. Here, the outer surface 210B and the inner surface 210C are concentric.

<Configuration of flange part>
As shown in FIGS. 2 and 3, the flange portion 220 extends outward in the radial direction of the half-tube shape of the main body portion 210 from one end (the right side as viewed in FIGS. 2 and 3) of the main body portion 210. put out.

The flange portion 220 includes an outer surface 220B and an inner surface 220C that correspond to the outer surface 210B and the inner surface 210C of the main body portion 210. That is, the outer surface 220B is concentric with the inner surface 220C when viewed from the axial direction of the half-split protection tube 200, and forms a virtual semicircle (not shown) with a small curvature. Here, this inner surface 220C has a shape that can be engaged with a part of the outer surface 220B that has the same dimension as the dimension from the half-split surface 210A to the mounting surface 250A (described later) and is spaced apart from the end surface 220A. It shows.

<Configuration of the dome>
The dome portion 230 has a dome shape that extends outward in the radial direction from the end of the main body portion 210 that is opposite to the flange portion 220 (the left side as viewed in FIGS. 2 and 3). In this embodiment, this dome shape is a semicylindrical dome shape.

The dome portion 230 includes an outer surface 230B and an inner surface 230C, which correspond to the outer surface 210B and the inner surface 210C of the main body portion 210. This inner surface 230C has a shape capable of engaging with the outer surface 230B.

<Details of main unit>
As shown in FIGS. 7 and 8, when the two half-split protection tubes 200 are configured as the protection tube 100, the half-split surfaces 210A of the main body portion 210 are brought into contact with each other, so that the submarine cable, etc. A cylindrical portion 110 is formed to cover the cylindrical portion from the outer circumferential side thereof. The axial direction of this cylindrical portion 110 coincides with the axial direction of the half-tube shape formed by each main body portion 210 (left-right direction as seen in FIG. 7; hereinafter also simply referred to as "axial direction").

<Details of flange>
At this time, as shown in FIG. 7, the flange portions 220 of each half-split protection tube 200 connect the connecting portion 120 that communicates with the cylindrical portion 110 by abutting the end surfaces 220A on the side of the half-split surface 210A against each other. Form. Here, the end surface 220A of the flange portion 220 extends toward the flange portion 220 along the half-split surface 210A of the main body portion 210. In this embodiment, the connecting portion 120 has a funnel shape in which the main body portion 210 is connected to the foot side. That is, the flange portion 220 has a shape obtained by dividing the funnel shape into two along a plane along the axial direction.

Further, the flange portion 220 is formed with an insertion edge S22A that constitutes an insertion opening S12A provided in the connecting portion 120 when the protective tube 100 is configured. Here, the insertion port S12A is provided at the end of the protective tube 100 on the connecting portion 120 side in the axial direction. Note that the insertion opening S12A has a size that allows passage of the submarine cable C10 or the like.

<Details of the dome>
The dome portion 230 of each half-split protection tube 200 forms a housing portion 130 that communicates with the cylindrical portion 110 by abutting the end faces 230A on the half-split surface 210A side with each other. Here, the end surface 230A of the dome portion 230 extends toward the dome portion 230 side along the half-split surface 210A of the main body portion 210. Further, the connecting portion 120 of another protection tube 100 (see the imaginary line in FIG. 9) is accommodated in the housing portion 130, thereby bringing this other protection tube 100 into a swingable connected state. In this connected state, when the dome portions 230 of one half-split protection tube 200 are butted together to form the accommodating portion 130, the flange portion of the other half-split protection tube 200 constituting the connection portion 120 in another protection tube 100 is 220 from the outside in the radial direction. Thereby, the plurality of protective tubes 100 (see FIG. 9) that are in a connected state can cover the submarine cable etc. C10 (see FIG. 9) according to its length.

Further, the dome portion 230 is formed with a bulging space S23 that forms a connecting space S13 provided inside the housing portion 130 when the protective tube 100 is configured. Here, the connection space S13 has a size that can accommodate the connection part 120, as shown in FIG. Further, as shown in FIG. 7, the dome portion 230 is formed with a connecting edge S23A that constitutes a connecting port S13A provided in the housing portion 130 when constructing the protective tube 100. Here, the connection port S13A is provided at the end of the protection tube 100 on the opposite side to the connection portion 120 in the axial direction. Further, as shown in FIG. 9, the connecting port S13A has a size that allows the connecting portion 120 to swing with respect to the center S13B of the connecting space S13. As a result, the plurality of connected protective tubes 100, in which the connecting portion 120 is accommodated in the connecting space S13 of the accommodating portion 130, can connect the submarine cable, etc., C10, even if the submarine cable, etc., C10 is bent. Can be covered along bends.

<Details of half-split protection tube>
The half-split protection tube 200 has a pair of support parts 240 and a base part 250, as shown in FIGS. 1 to 3. Here, the support portion 240 is configured to be able to support the weight of the half-split protection tube 200 and the load applied to the half-split protection tube 200. Further, the base portion 250 is configured to be capable of receiving the load applied to the half-split protection tube 200. As a result, by placing the support portion 240 of the other half-split protection tube 200 on the stand portion 250 of one half-split protection tube 200, these half-split protection tubes 200 can be stacked as shown in FIG. can do. In this specification, the upper side in the stacked state is referred to as "one side", and the lower side is referred to as "the other side". The support portion 240 and the base portion 250 will be explained below.

<Structure of support part>
As shown in FIGS. 1 to 3, the support portions 240 are provided at both ends of the half-tube shape in the width direction (see FIG. 2). In this embodiment, each support portion 240 is a plate-shaped portion spanning the main body portion 210 and the dome portion 230, and a portion of its edge is embedded in the wall of the main body portion 210 and/or the dome portion 230. integrated into a unified state. Therefore, the support portion 240 reinforces the space between the main body portion 210 and the dome portion 230.

As shown in FIGS. 2 and 3, each support portion 240 has a plate surface 240A that extends outward in the radial direction along the half surface 210A (see FIG. 3) of the main body portion 210. These plate surfaces 240A are capable of supporting the weight of the halved protection tube 200 and the load applied to the halved protection tube 200, similarly to the halved surface 210A of the main body portion 210.

Further, as shown in FIG. 7, the respective plate surfaces 240A are butted against each other when forming the protection tube 100. Thereby, in the two half-split protection tubes 200, the protection tube 100 can be configured by abutting and fastening the plate surfaces 240A of the supporting portions 240 that become a pair against each other.

Here, a fastening hole 240B is formed in each plate surface 240A. These fastening holes 240B make it possible to fasten the support portions 240 of the two half-split protection tubes 200 together when constructing the protection tube 100. At this time, each fastening hole 240B is used for engaging a fastener (not shown; for example, a combination of a wing bolt and a wing nut). Thereby, the fastener that engages with the fastening hole 240B can configure the protective tube 100 by sandwiching the two plate surfaces 240A that are butted against each other in the two half-split protective tubes 200.

<Composition of the stand>
As shown in FIGS. 1 to 3, the base portion 250 is provided so as to protrude from the dome portion 230 toward the main body portion 210 in the axial direction of the half-split protection tube 200. Further, the stand portion 250 forms a stand configured to be able to receive loads at two locations separated by a predetermined distance when viewed in the width direction of the half-split protection tube 200 (see FIG. 2). Here, the above-mentioned "predetermined distance" is equal to the distance between each support part 240 as seen in the above-mentioned width direction. In the present embodiment, as shown in FIG. 4, the base portion 250 connects the edge of the semicircular dome shape of the dome portion 230 on the main body portion 210 side (the front side in FIG. 4) to the plate of the support portion 240. It has a shape that is flattened toward the surface 240A side (lower side in the figure). The flat portion dropped in this flattening constitutes a mounting surface 250A parallel to the plate surface 240A of the support portion 240 and the half-split surface 210A of the main body portion 210. Therefore, the mounting surface 250A is located at the position closest to one side of the platform 250. Furthermore, a portion of the dome portion 230 protrudes to one side beyond the base portion 250.

As shown in FIG. 5, the mounting surface 250A allows at least a portion of the plate surface 240A of another half-split protection tube 200 to be placed thereon, thereby transferring the load of this other half-split protection tube 200 to the base. Make it possible for 250 people to accept it. That is, the mounting surface 250A has a planar support structure that allows the above-mentioned stacked state to be realized by placing the support portion 240 of the other half-split protection tube 200 on the base portion 250 of one half-split protection tube 200. In this embodiment, the mounting surface 250A is a band-shaped surface extending in the width direction, thereby encompassing both of the two locations and realizing the reception of the load at each of these two locations.

By the way, as shown in FIG. 4, the base portion 250 is formed such that the amount of protrusion toward one side thereof is smaller than the maximum amount of protrusion toward one side of the main body portion 210. In other words, at least a portion of the main body portion 210 is formed to protrude to one side than the base portion 250. This means that the inner surface 230C of the dome portion 230 on the side to be stacked and the outer surface 210B of the main body portion 210 on the side to be stacked are engaged with each other in both the width direction and the axial direction of the half-split protection tube 200. A combined state (see FIG. 6) is realized. Thereby, when transporting a large number of half-split protection tubes 200 in a stacked state, this can be transported more stably.

Furthermore, as shown in FIG. 5, the inner surface 220C of the flange portion 220 in the half-split protection tube 200 on the side to be stacked is relative to the outer surface 220B of the flange portion 220 on the half-split protection tube 200 on the side to be stacked. to engage. This engagement structure reduces inclination and/or shaking in the circumferential direction (see FIG. 6) in the half-tube shape of the half-split protection tube 200 on the stacked side. In addition, the above-mentioned engagement structure, together with the mounting structure of the plate surface 240A on the mounting surface 250A described above, also prevents axial inclination and/or shaking in the half-tube shape of the half-split protection tubes 200 on the stacked side. Reduce. Thereby, stability when stacking a large number of half-split protection tubes 200 can be improved. In the present embodiment, the above-mentioned engagement structure and mounting structure connect the half-split surface 210A of the half-split protection tube 200 on the stacked side to the half-split surface 210A of the half-split protection tube 200 on the stacked side. parallel to According to this, the attitude of the half-split protection tube 200 on the side to be stacked is made to match the attitude of the half-split protection tube 200 on the side to be stacked, and the half-split protection tube 200 on the side to be stacked is further separated. It is possible to easily stack the half-split protection tubes 200. Furthermore, since the posture of the half-split protection tubes 200 on the side to be stacked matches the posture of the half-split protection tubes 200 on the side to be stacked, a large number of half-split protection tubes 200 are stacked. It is possible to improve the loading rate at the time of loading.

By the way, the drop dimension L10 of the mounting surface 250A with respect to the outer diameter of the dome part 230 is larger than the difference L20 between the outer diameter of the dome part 230 and the outer diameter of the main body part 210, as shown in FIG. Therefore, a portion of the main body portion 210 protrudes to one side beyond the base portion 250, thereby dividing the placement surface 250A into two in the width direction. Here, when stacking a large number of half-split protection tubes 200, as shown in FIG. The pairs of support portions 240 in the other half-split protection tubes 200 are supported, respectively. Thereby, the base portion 250 of the first half-split protection tube 200 can suppress the other half-split protection tube 200 from swinging in the circumferential direction of the half-split tube shape.

With these, a large number of half-split protection tubes 200 can be grouped together by a stacking method in which one half-split protection tube 200 is stacked with other half-split protection tubes 200. Then, the stacked state in which the plurality of half-split protection tubes 200 are stacked becomes difficult to collapse. Thereby, a large number of half-split protection tubes 200 can be stacked and transported stably.

<Palette composition>
The half-split protection tubes 200 described above are stacked by stacking them on a pallet P10, as shown in FIGS. 5 and 6. This pallet P10 has a loading surface P10A that is a rectangular flat surface. Further, the pallet P10 has sufficient strength to stack a large number (for example, 20 or more) of half-split protection tubes 200 on the loading surface P10A. In this embodiment, the half-split protection tubes 200 are stacked in such a manner that one set consists of five halves stacked in layers (see FIG. 5), and four sets of these are arranged in a horizontal line in a row (see FIG. 6). The pallet P10 is bound by a plurality of (for example, four) iron bands P20. In this row, each half protection tube 200 is arranged so that its dome portion 230 is adjacent to the flange portion 220 of the horizontally adjacent half protection tube 200. Note that, for example, sterilized wood is used as the material for the pallet P10.

<Procedure for loading half-split protection tubes>
An example of work when stacking the half-split protection tubes 200 according to the first embodiment described above onto the pallet P10 will be described.

First, a worker (not shown) who performs the work arranges the pallet P10 so that the loading surface P10A is horizontal, as shown in FIG.

Next, as shown in FIG. 6, the worker arranges the four half-split protection tubes 200 evenly so that their axial directions are along any one side of the loading surface P10A. Here, each half-split protection tube 200 is arranged side by side so that the flange portion 220 and the dome portion 230 are adjacent to each other. Thereby, the main body portions 210 in each half-split protection tube 200 can be spaced apart at a constant interval. Further, the half surface 210A of each half protection tube 200 is brought into contact with the loading surface P10A, as shown in FIG.

Next, the worker places the half-split protection tube 200 on the side to be stacked on the half-split protection tube 200 on the side to be stacked. Yes, the worker performs this stacking four times to make the half-split protection tubes 200 stacked into five stacks. Here, the crawling worker places the plate surface 240A of the support section 240 on the mounting surface 250A of the platform section 250. Similarly, the worker engages the inner surface 220C of the half-split protection tube 200 on the side to be stacked with the outer surface 220B of the half-split protection tube 200 on the side to be stacked at a predetermined position. Due to these, the stacked state in which the plurality of half-split protection tubes 200 are stacked becomes stable.

Next, as shown in FIGS. 5 and 6, the worker moves the stacked half-split protection tubes 200 and the pallet P10 from a direction intersecting the extending direction of the half-split protection tubes 200 with a band iron P20. enclose. Thereby, it is possible to reduce the possibility that the large number of stacked half-split protection tubes 200 will collapse due to shaking during transportation.

As described above, a state in which a large number of half-split protection tubes 200 can be stably transported together is realized.

<Protection tube configuration procedure>
An example of work when constructing the protection tube 100 (see FIGS. 7 and 8) from the half-split protection tube 200 according to the first embodiment described above will be described. In this example of work, there are a worker (not shown) on board a ship at sea, and a diver (not shown) who is waiting underwater at a location where there is a C10 such as a submarine cable. They each engage in work.

First, the worker drops the plurality of half-split protection tubes 200 loaded on the pallet P10 from the ship into the sea along with the pallet P10, and then delivers them to the diver. In response, the diver cuts the band iron P20 that binds the half-split protection tube 200 in the stacked state, so that the half-split protection tube 200 can be taken out from the pallet P10.

Next, the worker drops the fasteners (not shown) necessary to fasten the two halves of the protective tube 200 to form the protective tube 100 from the ship and delivers them to the diver. .

Further, as shown in FIGS. 7 and 8, the diver performs a pinching operation in which the submarine cable or the like C10 is sandwiched between two half-split protection tubes 200 from the outer circumferential side thereof. At this time, the diver arranges the two half-split protection tubes 200 so that the plate surfaces 240A of each support section 240 provided in the width direction are opposed to each other.

Next, the diver performs a fastening operation by engaging the fastener delivered by the worker into the fastening hole 240B of the plate surface 240A arranged oppositely, thereby separating the two halves. The protection tube 100 is constructed from the protection tube 200. As a result, the protection tube 100 is configured to house the submarine cable C10 inside the tube.

Then, as shown in FIG. 9, the diver repeats the above-mentioned pinching work and the above-mentioned fastening work, thereby realizing a state in which a large number of protection pipes 100 are connected along the submarine cable or the like C10. Here, in the pinching operation, the diver connects the connecting portion 120 (see the imaginary line in FIG. 9) of the already constituted protection tube 100 to the dome portions of the two half-split protection tubes 200 that are currently the target of the pinching operation. Sandwich with 230.

<Action/Effect>
According to the above-described half-split protection tube 200, a large number of half-split protection tubes 200 can be transported together by a stacking method in which one half-split protection tube 200 is stacked with other half-split protection tubes 200. . At this time, one half-split protection tube 200 supports the pair of support portions 240 in the other half-split protection tube 200, respectively, at two locations spaced apart in the width direction of the half-split tube shape. This suppresses the other half-split protection tubes 200 from swinging in the circumferential direction in their half-tube shape, thereby suppressing the stacked state from collapsing. Thereby, a large number of half-split protection tubes 200 can be stacked and transported stably.

According to the above-described half-split protection tube 200, the mounting surface 250A of the base portion 250 and the plate surface 240A of the support portion 240 are parallel to each other. As a result, the posture of the half-split protection tube 200 on the side to be stacked is made to match the posture of the half-split protection tube 200 on the side to be stacked, and another half is added to the half-split protection tube 200 on the side to be stacked. It is possible to easily stack the split protection tubes 200 in layers.

Moreover, when stacking another half-split protection tube 200 on one half-split protection tube 200, this one half-split protection tube 200 similarly supports the other half-split protection tube 200 with its surface. As a result, the other half-split protection tube 200 is suppressed from tilting and/or swinging in the circumferential direction in its half-tube shape and in the axial direction in the same half-tube shape. Thereby, it is possible to improve the loading rate and stability when stacking a large number of half-split protection tubes 200 in a stacked state.

Further, the support portion 240 that receives a load in a stacked state can be used to fasten two half-split protection tubes 200 when configuring the protection tube 100.

According to the half-split protection tube 200 described above, when a plurality of half-split protection tubes are stacked, the inner surface 230C of the dome portion 230 on the side to be stacked and the outer surface of the dome portion 230 on the side to be stacked. Surfaces 230B can be engaged with each other. Thereby, even when a large number of half-split protection tubes 200 are transported in a stacked state, they can be transported more stably.

According to the half-split protection tube 200 described above, when the plurality of half-split protection tubes 200 are stacked, the inner surface 230C of the dome portion 230 on the side to be stacked and the main body portion 210 on the side to be stacked are The outer surfaces 210B can be engaged with each other. Thereby, even when a large number of half-split protection tubes 200 are transported in a stacked state, they can be transported more stably.

By having each of the above configurations, the present disclosure can provide a half-split protection tube 200 that can be stably transported in bulk.

<Other embodiments>
The mode for carrying out the present invention has been described above using the above-described embodiments. However, it will be apparent to those skilled in the art that various substitutions, modifications, and changes can be made without departing from the scope of the invention. That is, modes for carrying out the objectives of the present invention may include all substitutions, modifications, and changes that do not depart from the spirit and objective of the claims appended hereto. For example, the following various embodiments can be implemented as embodiments of the present invention.

The half-split protection tube according to the present disclosure may be punched to provide the manufacturing lot indicated in Braille on the outer surface of the half-split protection tube. In such a case, the user may be able to recognize the production lot of the half-split protective tube by groping.

In the half-split protection tube according to the present disclosure, the support portion does not need to be a plate-shaped portion. In other words, the support part may have an appropriately selected shape as long as it is a part spanning the main body part and the dome part and has a plate surface that extends radially outward along the half surface of the half tube shape. can be taken as a thing. Here, examples of the above-mentioned "appropriately selected shape" include, for example, a hemispherical shape, a semicylindrical shape, a shape having unevenness on the side opposite to the plate surface, and the like.

In the half-split protective tube according to the present disclosure, the base part is not limited to a structure in which the edge of the dome part is flattened so that a part of the main body part protrudes more to one side. In other words, the platform is provided so as to protrude from the dome toward the main body, and is configured to be able to receive the load at two locations spaced apart in the width direction of the half-tube shape of the main body. For example, it may have an appropriately selected configuration. Here, examples of the above-mentioned "appropriately selected configuration" include a configuration in which the base is made of two protrusions extending from the dome toward the main body, or a configuration in which the base is located closer to one side than any other part of the main body. Examples include outstanding configurations.

In the half-split protection tube according to the present disclosure, the fastening holes are not limited to those provided in the plate surfaces of the support portions provided at both widthwise ends of the half-tube shape of the main body. That is, the half-split protection tube may be provided with a fastening hole only on one of the plate surfaces of each support portion, or may be provided with no fastening hole at all. Further, the half-split protective tube may be configured to include a notch cut into the edge of the plate of the support portion, and a fastener of the support portion is engaged with the notch.

100 Protection tube 110 Cylindrical portion 110B Outer surface 110C Inner surface 120 Connection portion 130 Accommodation portion 200 Half protection tube 210 Main body portion 210A Half surface 210B Outer surface 210C Inner surface 220 Flange portion 220A End surface 220B Outer surface 220C Inner surface 230 Dome portion 230A End face 230B Outer surface 230C Inner surface 240 Support part 240A Plate surface 240B Fastening hole 250 Base part 250A Placement surface C10 Submarine cable, etc. L10 Dropping dimension L20 Difference P10 Pallet P10A Loading surface P20 Band iron S12A Insertion port S13 Connection space S13A Connection Mouth S13B Center S22A Insertion edge S23 Swelling space S23A Connection edge

Claims (5)

A half-split protection tube is a part that constitutes a submarine protection tube that protects a submarine cable or submarine piping by sandwiching the submarine cable or piping between the two.
a main body having a long half-tube shape;
a flange portion projecting outward in the radial direction of the half-tube shape from one end of the main body portion;
a dome portion exhibiting a dome shape extending outward in the radial direction from an end opposite to the flange portion of the main body portion;
The dome portion of one half-split protection tube wraps the flange portion of the other half-split protection tube from the outside in the radial direction, so that these half-split protection tubes can be brought into a connected state;
Further, a portion that extends between the main body portion and the dome portion, and is provided at both ends in the width direction of the half-split tube shape, is provided so that the weight of the half-split protection tube and the weight of the half-split protection tube are applied to the half-split protection tube. a pair of support parts configured to be able to support a load;
a pedestal portion that is provided so as to protrude from the dome portion toward the main body portion side and constitutes a pedestal configured to be able to receive the load;
The platform is configured to be able to receive the load at two locations spaced apart in the width direction by a distance between the support parts when viewed in the width direction,
By placing the supporting portion of the other half-split protection tube on the platform of one half-split protection tube, it is possible to stack these half-split protection tubes in a stacked state.
Half-split protection tube. The half-split protection tube according to claim 1,
The base part has a shape in which the edge of the dome shape of the dome part on the main body side is flattened toward the support part side.
Half-split protection tube. The half-split protection tube according to claim 1,
Each of the support portions has a plate surface that extends outward in the radial direction along the half surface of the half pipe shape,
A fastening hole is drilled in the plate surface to enable the supporting parts of the two half-split protection tubes to be fastened to each other when the two half-split protection tubes constitute the submarine protection tube,
The platform has a mounting surface that is parallel to the half-split surface at at least the two locations, and at least a part of the plate surface of the other half-split protection tube is mounted on the mounting surface. is considered possible,
Half-split protection tube. The half-split protection tube according to any one of claims 1 to 3,
In the stacked state, when the upper side is one side and the lower side is the other side,
At least a portion of the dome portion protrudes toward the one side beyond the base portion;
Half-split protection tube. The half-split protection tube according to claim 4 ,
At least a portion of the main body portion protrudes toward the one side beyond the base portion;
Half-split protection tube.

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