JP5290798B2 - Cable protector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable protective device for winding a protective sheet on the outer periphery of a cable only by drawing an expansion keeping member from the protective sheet, and facilitating a work for mounting or repairing a protective tube even in deeper water. <P>SOLUTION: The cable protective device 1 is arranged on the outer periphery of the cable 50 and used for protecting the cable 50. The cable protective device 1 includes the protective sheet 2 wound on the cable 50 in a roll shape, and the expansion keeping member 3 being inserted to the protective sheet 2 so as to be removable and keeping the protective sheet 2 in an expanded state. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a cable protection device, and more particularly to a cable protection device that protects a cable by winding a sheet around the outer periphery of the cable in a roll shape.

For example, a cable may be protected with a protective pipe in order to prevent a cable or a hull from coming into contact with a submarine cable and damaging the cable. The normal protective pipe has a split structure composed of one shell and the other shell, and the one shell and the other shell are fixed using bolts after covering the submarine cable.
In addition, as one shell and the other shell, one in which a hook of one shell is clamped with respect to a shaft body of the other shell and these shells can be fixed with bolts is proposed (for example, Patent Document 1). reference).

JP-A-8-196011

However, in the above-described prior art, when a protective tube is to be attached to the submarine cable in the sea, one shell and the other shell are arranged on the submarine cable and the one shell and the other shell are fixed with bolts. It is necessary to do work to do. Since fixing work in the sea is performed manually by divers, protective pipe installation work and protective pipe repair work are not possible even at special depths in deep water where divers cannot work.
Therefore, it is desired that the protective pipe can be attached and the protective pipe can be repaired even with an operation vehicle operated by remote control instead of a diver, and the cable can be protected even in deep water.
In view of the above, an object of the present invention is to provide a cable protection device that can more easily perform a work for installing a protective pipe and a work for repairing the protective pipe.

In order to solve the above problems, the cable protection device of the present invention is a cable protection device for protecting the cable arranged on the outer periphery of the cable and capable of being wound around the cable in a roll shape. A sheet and a deployment maintaining member that maintains the protection sheet in an unfolded state, and the protection sheet is a resin sheet wound around the cable in a roll shape, and the protection sheet is attached to the cable. a first end portion forming the large diameter portion in a state wound into a roll for, characterized Rukoto that Yusuke and a second end portion forming the small-diameter portion.

In the cable protection device of the present invention, a first convex portion is formed on the inner surface of the first end portion of the protection sheet, and the outer surface of the second end portion of the protection sheet is disposed along the cable. The 2nd convex part which the said 1st convex part of the said adjacent said protection sheet | seat meshes is formed, It is characterized by the above-mentioned.
In the cable protection device of the present invention, the deployment maintaining member is a rod-shaped member, and a guide hole through which the deployment maintaining member is passed is formed in the protection sheet.

In the cable protection device of the present invention, the plurality of guide hole portions are formed at intervals in parallel along a direction perpendicular to the longitudinal direction of the cable protected by the protection sheet.
In the cable protection device of the present invention, the deployment maintaining member includes a bolt portion, and a grip portion provided at one end of the bolt portion and gripped when the deployment maintaining member is rotated. And

  According to the present invention, even when the diver is not able to work at a deep water depth, the protective sheet can be wound around the outer periphery of the cable by simply removing the deployment maintaining member from the protective sheet. Even if there is a cable protection device, it is possible to more easily perform the operation of installing the protective tube and repairing the protective tube.

It is a perspective view which shows preferable embodiment of the protection sheet | seat of the cable protection apparatus of this invention. It is a perspective view which shows the process in which the expansion | deployment maintenance member is removed from the protection sheet | seat of the cable protection apparatus shown in FIG. It is a top view which expand | deploys a protection sheet and shows the inner surface side of a protection sheet. It is a perspective view which shows ROV, one cable protection apparatus, and a submarine cable. It is a perspective view which shows the state which has arrange | positioned the location which needs protection and repair of the protection sheet of the state expand | deployed with respect to the submarine cable. It is a perspective view which shows the state by which the protection sheet was wound in roll shape with respect to the location which needs protection and repair of a submarine cable. It is a side view which shows the example by which the some protection sheet is wound in roll shape continuously with respect to the location which needs protection and repair of a submarine cable. It is sectional drawing which shows the example of the mutual connection state of the some protection sheet | seat shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a protective sheet constituting a cable protective device according to an embodiment of the present invention. FIG. 2 is a perspective view showing a process of removing the deployment maintaining member from the protective sheet of the cable protective device shown in FIG. FIG. 3 is a plan view showing the inner surface side of the forcibly deployed protective sheet.
A cable protection device 1 shown in FIG. 2 includes a protection sheet 2 shown in FIGS. 1 to 3 and a deployment maintaining member 3 shown in FIG.

The protection sheet 2 of the cable protection device 1 is disposed so as to cover the outer periphery of a cable, for example, a submarine cable, and is used to protect the submarine cable.
First, the structure of the protective sheet 2 will be described with reference to FIGS. The protective sheet 2 is a sheet made of a material, for example, a synthetic resin, having flexibility and excellent water resistance and having a property of being wound into a roll by the self-returning force of the protective sheet 2. As shown in FIGS. 1 and 2, the protective sheet 2 has a width in which the wound side portions overlap each other in a roll shape more than once, and plays a role of a cable protective tube.
As shown in FIG. 3, the protective sheet 2 has a first end portion 4, a second end portion 5, and an intermediate portion 6 formed between the first end portion 4 and the second end portion 5. Yes. The first end portion 4, the intermediate portion 6, and the second end portion 5 are formed along the central axis CL.
As shown in FIG. 1, the first end 4 of the protective sheet 2 is a part that forms a large-diameter portion 20 that spreads in a trumpet shape in a state of being wound around a submarine cable. The two end portions 5 are portions that form the small-diameter portion 21 in a state of being wound around the submarine cable.

  As shown in FIG. 3, the first end 4 of the protective sheet 2 has an outer edge 7 and side edges 8 and 9, and the first end 4 is formed in a substantially fan shape. The outer edge portion 7 is formed in an arc shape, and the side edges 8 and 9 are formed so as to be inclined along the outer direction D by an angle θ with respect to a straight line L parallel to the central axis CL. For example, three first convex portions 11 are formed on the inner surface 10 side of the first end portion 4 so as to be parallel to the arc-shaped outer edge portion 7 at the same interval. These first convex portions 11 have, for example, a rectangular cross section. Between the 1st convex parts 11, the 1st recessed part 11R is formed.

  As shown in FIG. 3, the second end portion 5 of the protective sheet 2 has an outer edge portion 12 and side edges 13 and 14. The outer edge portion 12 is formed in a direction orthogonal to the central axis CL, and the side edges 13 and 14 are formed in parallel to the central axis CL. The distance S1 between the side edges 13 and 14 of the second end 5 is set smaller than the maximum distance S2 and the minimum distance S3 of the side edges 8 and 9 of the first end 4. On the outer surface 16 side of the second end portion 4, for example, three second convex portions 15 are spaced at the same interval, and a second concave portion 15 </ b> R is formed between the second convex portions 15.

  As shown in FIG. 3, the intermediate portion 6 of the protective sheet 2 includes a first portion 22 that is continuous with the first end portion 4, a second portion 23 that is continuous with the second end portion 5, and a side edge 24. , 25. The width of the first portion 22 is larger than the width of the second portion 23, and the side edges 24 and 25 are formed so as to gradually increase from the second portion 23 toward the first portion 22.

  Further, as shown in FIGS. 2 and 3, the intermediate portion 6 has guide hole portions 30, 31, and 32 for allowing the deployment maintaining member 3 to pass therethrough. These guide hole portions 30, 31, and 32 are formed in parallel within a range of the intermediate portion 6 at intervals and in a direction orthogonal to the central axis CL. In the illustrated example, three guide hole portions 30, 31, 32 are formed, but the guide hole portion 30 is formed in the first portion 22, the guide hole portion 32 is formed in the second portion 23, and the center. The guide hole 31 is formed at a substantially intermediate position between the first portion 22 and the second portion 23.

Next, the development maintaining member 3 shown in FIG. 2 will be described.
The deployment maintaining member 3 is made of, for example, metal for deploying and maintaining the protective sheet 2 by passing through one or more of the three guide hole portions 30, 31, 32 described above. It is a rod-shaped member. In the example shown in FIG. 2, the deployment maintaining member 3 has a long bolt portion 33 and a gripping portion 34, and a male screw 35 is formed on the long bolt portion 33 over almost the entire length.
The grip portion 34 is provided at the end of the long bolt portion 33. Since the male screw 35 is formed, the deployment maintaining member 3 can be easily inserted into the guide holes 30, 31, 32 by rotating the deployment maintaining member 3 in the rotation direction R. Conversely, by rotating the deployment maintaining member 3 in the rotation direction R1, the deployment maintaining member 3 can be easily extracted from the guide holes 30, 31, and 32.

  In the example shown in FIG. 2, the grip portion 34 is a portion that is gripped by a manipulator 40 of a ROV (Remote Operated Vehicle). The deployment maintaining member 3 is inserted in the T direction with respect to, for example, the guide hole portion 31 of the guide hole portions 30, 31, and 32 by rotating in the rotation direction R by the operation of the manipulator 40, or rotated in the reverse direction. By rotating in the direction R1, the guide hole 31 can be pulled out in the reverse T1 direction.

Next, with reference to FIGS. 4 to 6, an operation example in which the protection sheet 2 of the cable protection device 1 is wound around the outer periphery of the submarine cable 50 in a roll shape will be described.
FIG. 4 is a perspective view showing the ROV 41, one cable protection device 1, and the submarine cable 50. The submarine cable 50 is disposed on the seabed 51. The ROV 41 is a remotely operated underwater probe and is also called a remotely operated underwater explorer. The ROV 41 includes an underwater camera, and there is a type in which power is supplied from a mother ship in a wired manner and a type in which power is supplied from an internal storage battery and only information is exchanged in a wired manner.

  FIG. 5 is a perspective view showing the part 63 that needs to be protected and repaired of the submarine cable 50 and the protective sheet 2 in a state where it is forcibly deployed by the deployment maintaining member 3. FIG. 6 is a perspective view showing a state in which the protective sheet 2 is wound in a roll shape by a self-returning force of the protective sheet 2 on a portion 63 where the protection and repair of the submarine cable 50 is necessary.

The protection sheet 2 in the unfolded state as shown in FIG. 5 can be formed by previously passing the unfolding maintenance member 3 with respect to, for example, the central guide hole 31 of the protection sheet 2 on the ground.
Alternatively, the manipulator 40 obtains the protective sheet 2 in a state where it is forcibly deployed by rotating the deployment maintaining member 3 in the rotation direction R through the guide hole 31 at the center of the protective sheet 2 on the seabed. Can do.

  As shown in FIG. 4, the ROV 41 approaches a portion 63 where the protection and repair of the submarine cable 50 is necessary, and the manipulator 40 of the ROV 41 places the protection sheet 2 in a deployed state at the portion 63 where protection and repair are necessary. Place in the lower position. In this case, the deployed protective sheet 2 is arranged so as to pass through the lower part of the portion 63 requiring protection and repair so as to receive the portion 63 requiring protection and repair. Since the protection sheet 2 is in a state where it is forcibly deployed by the deployment maintenance member 3, the protection sheet 2 can be easily and reliably disposed on the portion 63 where the protection and repair of the submarine cable 50 is required.

  Next, the manipulator 40 of the ROV 41 extracts the deployment maintaining member 3 from the protection sheet 2 in the deployed state shown in FIGS. 5 and 4. When the deployment maintaining member 3 is extracted from the protection sheet 2 in such a deployed state, the manipulator 40 rotates the deployment maintaining member 3 in the rotation direction R1 on the sea floor as shown in FIG. Can be extracted from the guide hole 31.

  By pulling out the unfolding maintenance member 3, the unfolded protective sheet 2 is wound in a roll shape by a self-returning force on a portion 63 that needs to be protected and repaired as shown in FIG. Stick. As shown in FIG. 6, the protective sheet 2 wound in the form of a roll is formed with an overlapping portion 66, so that the protective sheet 2 does not come off from the place 63 where protection and repair of the submarine cable 50 are necessary.

FIG. 7 shows an example in which a plurality of protective sheets 2 are continuously wound around a portion 63 where protection and repair of the submarine cable 50 are necessary, and FIG. 8 is shown in FIG. It is sectional drawing which shows the example of the mutual connection state of the some protection sheet.
In accordance with the length of the portion 63 where protection and repair of the submarine cable 50 are required, it is necessary to connect a plurality of protection sheets 2 to each other.

  After one protective sheet 2 (indicated by 2F for distinction) is first wound around the part 63 that requires protection and repair of the submarine cable 50, the other protective sheet 2 (indicated by 2S for distinction) is It is wound around a point 63 that needs to be protected and repaired later.

  Thus, in the state where the adjacent protective sheets 2F and 2S are wound in a roll shape, as shown in FIG. 8, the first convex portion 11 of the first end 4 of the protective sheet 2S is the second of the protective sheet 2F. It meshes with the second convex portion 15 of the end portion 5. Thus, the adjacent protective sheets 2F and 2S protect the outer peripheral surface of the portion 63 that needs to be protected and repaired without being displaced from each other with respect to the portion 63 that needs to be protected and repaired of the submarine cable 50. Can do. 7 and 8 exemplify two adjacent protective sheets 2F and 2S. However, the present invention is not limited to this, and three or more protective sheets can be arranged on the submarine cable.

  The cable protection device of the present invention is a cable protection device for protecting a cable that is disposed on the outer periphery of the cable, and includes a protection sheet that can be wound around the cable in a roll shape, and a state in which the protection sheet is deployed. A deployment maintaining member to be maintained. As a result, the protective sheet can be wrapped around the cable and covered if the deployment maintenance member is removed from the protective sheet. Even so, it is possible to perform work for installing the protective tube and repairing the protective tube.

The protective sheet is a resin sheet that is wound around the cable in a roll shape, and the protective sheet includes a first end portion that forms a large diameter portion in a state wound around the cable in a roll shape, and a small diameter portion. And a second end portion to be formed. Thereby, when arrange | positioning a some protective sheet with respect to a cable, a 2nd end part can be arrange | positioned in the 1st end part of an adjacent protective sheet.
A first convex portion is formed on the inner surface of the first end portion of the protective sheet, and the first convex portion of the adjacent protective sheet disposed along the cable is engaged with the outer surface of the second end portion of the protective sheet. A matching second convex portion is formed. Thereby, adjacent protection sheets can be continuously connected without being displaced from each other.

The deployment maintaining member is a rod-shaped member, and a guide hole through which the deployment maintaining member is passed is formed in the protective sheet. As a result, the deployment maintaining member can forcibly deploy the protection sheet or return the protection sheet to a roll shape by its own restoring force simply by inserting / removing it into the guide hole portion of the protection sheet.
The plurality of guide holes are formed at intervals in parallel along a direction orthogonal to the longitudinal direction of the cable protected by the protection sheet. Thereby, the expansion | deployment maintenance member can be forced to expand | deploy a protection sheet | seat through the arbitrary guide hole parts of a some guide hole part.

  The deployment maintaining member includes a bolt portion and a grip portion that is provided at one end of the bolt portion and gripped when the deployment maintaining member is rotated. As a result, the deployment maintaining member can be easily inserted into and removed from the guide hole portion of the protective sheet simply by gripping and rotating the grip portion.

By the way, this invention is not limited to the said embodiment, A various modified example is employable.
For example, the shape of the protective sheet is not limited to the illustrated example, and any shape can be adopted. The development maintaining member may be a rod-shaped member in which a male screw is not formed in addition to a rod-shaped member having a male screw. The number of guide hole portions of the protective sheet is not limited to three, but may be one, two, or four or more.
The deployment maintaining member only needs to be able to maintain the protective sheet in the deployed state, and the deployment maintaining member may be configured to be able to deploy the protective sheet by gripping the side edges on both sides of the protective sheet without passing through the guide hole portion of the protective sheet. .

DESCRIPTION OF SYMBOLS 1 Cable protection device 2 Protection sheet 3 Deployment maintenance member 4 First end part 5 of protection sheet Second end part 6 of protection sheet Intermediate part 20 of protection sheet Large diameter part 21 Small diameter part CL Center shaft 30, 31, 32 Guide Hole portion 33 Long bolt portion 34 Grip portion 40 Manipulator 41 ROV
50 Submarine cable (an example of a cable)
63 The place which needs protection and repair of a submarine cable 11 The 1st convex part 15 of the 1st end The 2nd convex part of the 2nd end

Claims (5)

A cable protection device arranged on the outer periphery of the cable to protect the cable,
A protective sheet capable of being wound around the cable in a roll, and
A deployment maintaining member for maintaining the protective sheet in a deployed state;
Equipped with a,
The protective sheet is a resin sheet wound around the cable in a roll shape,
The protective sheet is characterized Rukoto that Yusuke a first end portion forming the large diameter portion in a state wound into a roll, and a second end portion forming the small-diameter portion, against the cable Cable protection device. A first protrusion is formed on the inner surface of the first end of the protective sheet, and an outer surface of the second end of the protective sheet is formed on the outer surface of the adjacent protective sheet disposed along the cable. The cable protection device according to claim 1 , wherein a second convex portion that meshes with the first convex portion is formed. The cable protection device according to claim 1 , wherein the deployment maintaining member is a rod-shaped member, and a guide hole through which the deployment maintaining member is passed is formed in the protection sheet. The cable protection device according to claim 3 , wherein the plurality of guide hole portions are formed at intervals in parallel along a direction orthogonal to a longitudinal direction of the cable to be protected by the protection sheet. . The said expansion | deployment maintenance member has a bolt part and the holding part which is provided in the one end part of the said bolt part, and is hold | gripped when rotating the said expansion maintenance member, The Claim 3 or Claim characterized by the above-mentioned. 4. The cable protection device according to 4 .

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