JP2013013213A - Cable protection member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable protection member which enables pipe cutting for maintenance without causing damage to a cable even if a special appropriate tool for pipe cutting cannot be used in areas where the pipeline space is narrow.SOLUTION: A cable protection member 1 protects a cable 4 when a pipeline 3, housing the cable 4 therein, is cut. The cable protection member 1 has a cylindrical shape, is composed of a flexible member 5 and super hard members 6 resisting against a blade of a cutting tool, and has a structure that may be divided into half pieces. Cutting is made at arrangement positions of the super hard materials 6 on a surface of the flexible member 5 so as to fit with the shape of the super hard materials 6. The plate like or bar like super hard members 6 are buried in the arrangement positions to be disposed therein. Ring shaped protruding parts 8 are provided at positions on both end parts of the cable protection member 1.

Description

  The present invention relates to a cable protection member that protects a cable when a communication conduit in which the cable is accommodated is cut.

  When cutting a communication pipe buried underground or attached to a bridge by repair, the cable accommodated in the pipe will not be damaged. Cutting work is being carried out. As a general structure of the appropriate tool for the dedicated cutting tube, the blade part that cuts the pipeline is structured so that it does not reach the cable. ing.

  However, there are places where the interval between the pipes is narrow at the abutment of the bridge-attached pipe line, and the work may not be possible with a dedicated appropriate tool for cutting pipes. FIG. 9 is a diagram for explaining the positional relationship with another pipe line when the pipe line is cut with a dedicated cutting tube appropriate tool. As shown in FIG. 9, the interval between the pipe lines 3 in which the dedicated cutting-appropriate proper tool 11 can be used varies somewhat depending on the tool, but generally needs to be 3.5 cm or more. For this reason, when the distance between the pipes 3 is 3.5 cm or less, it is difficult to use the dedicated appropriate tool 11 for a cut tube. When performing the tube cutting operation without using the dedicated cutting tube proper tool 11, there is a possibility that the cable 4 may be damaged when the cutting blade portion reaches the cable 4. In order not to damage the cable 4, it is necessary to wrap the cable 4 in the pipeline cutting portion with a protective member, and it is necessary to move the protective member in the pipeline to the pipeline cutting position.

  On the other hand, cutting damage due to ceramic materials of plate-like bodies (flat plates, curved plates), bowl-like bodies, and cylindrical bodies (half-split type, integral type) depending on the shape and form of the buried object A defense member may be applied (refer nonpatent literature 1).

Evaluation of cutting resistance of ceramic protective plate (Construction Machinery Vol.44, No.7, Page55-60, 2008.07.01, Japan

  However, when the above-mentioned protective member made of a ceramic material is used as a member that protects the cable, the ceramic material is an extremely hard material and is not flexible. It is difficult to move the inside, and it is difficult to process the protective member in accordance with the protective function. For this reason, the above-mentioned protective member made of ceramic material cannot be used as a protective member for the cable accommodated in the pipe, and the cable is still damaged when repairing the cut pipe for repairing at a place where the pipe interval is narrow. There was a risk of giving.

  The present invention has been made in view of such problems, and an object of the present invention is to damage a cable even when a dedicated tool for a cutting tube cannot be used in a place where a pipe interval is narrow. Therefore, it is an object of the present invention to provide a cable protection member that enables a cutting tube work for repair.

  In order to achieve the above object, the present invention provides a cylindrical cable protection member that protects the cable when the pipe is cut in a pipe containing the cable therein, and the protection member body Is composed of a flexible member and a cemented carbide member, and has a structure that can be divided in half. The flexible member has a surface that is cut in accordance with the shape of the cemented carbide member. The cemented carbide member is embedded in a cut position and arranged in a staggered manner on the surface of the flexible member.

  Further, the present invention provides a cylindrical cable protection member that protects the cable when the pipe is cut in a pipe in which the cable is housed, and the protection member body is flexible. The flexible member has a structure that can be divided in half, and the surface of the flexible member is cut in accordance with the shape of the cemented carbide member. Is embedded in a position where cutting has been performed, and is arranged in a mesh shape on the surface of the flexible member.

  Further, the present invention provides a cylindrical cable protection member that protects the cable when the pipe is cut in a pipe in which the cable is housed, and the protection member body is flexible. The flexible member has a structure that can be divided in half, and the surface of the flexible member is cut in accordance with the shape of the cemented carbide member. Is embedded in the cut position and arranged in a zebra shape on the surface of the flexible member.

  The shape of the cemented carbide member is preferably a plate shape or a rod shape. Moreover, it is preferable to have a ring-shaped convex part over the perimeter of the said flexible member in the position of the both ends of the said protection member main body.

According to the present invention, the cable accommodated in the pipe line can be protected even when a dedicated tool for cutting a dedicated pipe cannot be used in a place where the pipe line interval is narrow, so that the cable can be repaired without damaging the cable. Cut tube work is possible.
Moreover, since a proper tool for a dedicated cutting tube cannot be used, it is possible to perform safe repair work against defective equipment and unstable equipment that cannot be eliminated.

It is a figure which shows the example of installation in the pipe line of the cable protection member by this invention. It is a figure which shows the detail of the cable protection member by this invention. It is a perspective view which shows the cable protection member by this invention in a half state. It is a figure which shows the cable protection member which made the super hard member the staggered arrangement | positioning. It is a figure which shows the cable protection member which made the carbide | carbonized_material a mesh-like arrangement | positioning. It is a figure which shows the cable protection member which made the super hard member the zebra-like arrangement | positioning. It is a side view of a cable protection member. It is a figure explaining the insertion method to the cutting object position of a cable protection member. It is a figure explaining the positional relationship with the other pipe line when the pipe line is cut | disconnected with the appropriate tool for exclusive cutting pipes.

  Embodiments of the present invention will be described with reference to the drawings. The cable protection member of the present invention needs to be protected so as to wrap the cable accommodated in the pipeline, and is accommodated in the pipeline in order to move the pipeline to the pipeline cutting position in such a form. A structure that can halve the formed cable, a structure that connects members to be inserted or pulled to move in the pipeline, and a structure that arranges and incorporates ceramic members and the like are essential.

  In addition, there is no particular rule regarding the flexibility of the member, but the insertion movement in the pipe line to the uneven part due to some bending of the pipe line itself, bending at the joint, or rust corrosion of the inner surface It is necessary to be possible easily. In addition, the bent portion needs to be flexible from the viewpoint of preventing damage to the cable and reducing the load on the cable when the cable protection member is inserted.

  FIG. 1 is a view showing an installation example of a cable protection member according to the present invention in a pipeline. FIG. 1 shows a state in which a cable protection member 1 according to the present invention wraps a cable 4 accommodated in a pipe 3 at a pipe cutting position 2. FIG. 2 is a diagram showing details of the cable protection member according to the present invention. 2A is a front view, and FIG. 2B is a side view. The cable protection member 1 according to the present invention is cylindrical and includes a flexible member 5 and a cemented carbide member 6 that resists the blade of a cutting tool, and has a structure that can be divided in half. In addition, ring-shaped convex portions 8 are provided at the positions of both ends of the cable protection member 1. FIG. 3 is a perspective view showing the cable protection member according to the present invention in a half-split state. 3A shows one half of the cable protection member in a half state, and FIG. 3B shows the other half of the cable protection member in a half state. The cable protection member in the half state shown in FIGS. 3A and 3B wraps the cable accommodated in the pipe line to protect the cable.

  The flexible member 5 may be a polyethylene flexible pipe or other plastic resin pipes in addition to the vinyl chloride pipe.

  As for the cemented carbide member 6, there are a ceramic material and a cemented carbide alloy material as members having cutting resistance even for special cutting tools such as a diamond cutter and a wire saw having diamond abrasive grains fixed thereto. In addition to the above, a hard metal member such as stainless steel, titanium, tungsten, or high carbon steel may be used if it has a cutting resistance with respect to the material and characteristics of the blade of the cutting tool.

  It is preferable that the cemented carbide member 6 such as ceramic that resists the blade of the cutting tool is disposed on the entire outer surface of the flexible member 5. However, since the cemented carbide member 6 such as ceramic is expensive, effective member dimensions and arrangement are determined. The cable protection member 1 needs to have a certain degree of flexibility so that the cable protection member 1 can be inserted up to the target pipeline cutting position 2 even if there is some bending in the pipeline 3, and the carbide member 6 is made of ceramic. In the case of a material, if the member thickness is thin and the shape is long relative to the width, deformation such as warpage may occur, so one member needs to be about 10 cm.

  In order to provide the above-described structure, the cable protection member 1 has the carbide member 6 arranged in a staggered manner around the flexible member 5. FIG. 4 is a view showing a cable protection member in which the carbide members 6 are arranged in a staggered manner. By adopting a staggered arrangement, the flexibility of the flexible member 5 is not impaired.

  The carbide member 6 may be arranged in an arbitrary length, width, or mesh shape as long as protection against the cutting tool blade is satisfied. FIG. 5 is a view showing a cable protection member in which the cemented carbide member 6 is arranged in a mesh shape.

  In order to be able to cope with the shape change in the pipe line 3, the arrangement shape of the cemented carbide member 6 may be a zebra-like arrangement having a structure shorter than the zigzag arrangement or the mesh arrangement described above. FIG. 6 is a view showing a cable protection member in which the cemented carbide member 6 is arranged in a zebra shape. Further, the outer circumference of the flexible member 5 may be entirely covered with the carbide member 6 if the length is shorter than the above-described staggered arrangement or mesh arrangement of the cable protection member.

  In addition, the arrangement | positioning space | interval of the cemented carbide member 6 has good space | interval which can protect also with respect to the circular shaped blade 7 of a cutting tool, as shown in the side view of FIG. Further, the shape of the cemented carbide member 6 may be a plate shape or a rod shape.

  In order to prevent displacement and detachment of the cemented carbide member 6 when the cutting tool blade 7 comes into contact with the cemented carbide member 6 such as ceramic, the flexible member 5 is arranged at the location where the cemented carbide member 6 is disposed. Cutting is performed in accordance with the shape of the cemented carbide member 6 and the cemented carbide member 6 is embedded therein. The flexible member 5 and the cemented carbide member 6 are integrated with an adhesive, a resin agent, or the like.

  Further, when the cable protection member 1 is inserted into the conduit 3, the cable protection member is used to prevent the corner of the built-in carbide member 6 from being caught on the inner surface of the tube and to reduce friction with the inner surface of the tube. 1 may be provided with ring-shaped convex portions 8 over the entire circumference of the flexible member 5.

  FIG. 8 is a diagram illustrating a method for inserting the cable protection member into the cutting target position. The cable protection member 1 is inserted into the pipeline cutting position 2 after the pipeline 3 is cut and removed at a standard position where the pipeline interval can be cut by a dedicated cutting appropriate tool. Done from the department.

  The cable protection member 1 is inserted by connecting the insertion rod 9 to the cable protection member 1. A scale indicating the insertion position is added to the insertion rod 9, and even if the pipe cutting position 2 is an arbitrary position at the opening end or the abutment 10, the pipe cutting position 2 is provided. Since the cable protection member 1 can be inserted into the cable protection member 1, the cable protection member 1 according to the present invention can protect the cable when the pipeline is cut.

  As described above, the cable protection member according to the present invention has a composite structure of a flexible member that can be processed and a cemented carbide member such as a ceramic member. Since it has both functions, the cable can be protected regardless of the type of cutting tool, and the cable can be protected at any pipe cutting position.

DESCRIPTION OF SYMBOLS 1 Cable protection member 2 Pipe cutting position 3 Pipe 4 Cable 5 Flexible member 6 Carbide member 7 Blade 8 Ring-shaped convex part 9 Inserting rod 10 Abutment 11 Proper tool for cutting pipe

Claims (5)

In a pipe line in which a cable is accommodated, a cylindrical cable protection member that protects the cable when the pipe line is cut,
The protective member body is composed of a flexible member and a cemented carbide member, and has a structure that can be divided in half.
The flexible member is cut on the surface according to the shape of the cemented carbide member,
A cable protection member, wherein the cemented carbide member is embedded in a cut position and arranged in a staggered manner on the surface of the flexible member. In a pipe line in which a cable is accommodated, a cylindrical cable protection member that protects the cable when the pipe line is cut,
The protective member body is composed of a flexible member and a cemented carbide member, and has a structure that can be divided in half.
The flexible member is cut on the surface according to the shape of the cemented carbide member,
A cable protection member, wherein the cemented carbide member is embedded in a cut position and arranged in a mesh shape on the surface of the flexible member. In a pipe line in which a cable is accommodated, a cylindrical cable protection member that protects the cable when the pipe line is cut,
The protective member body is composed of a flexible member and a cemented carbide member, and has a structure that can be divided in half.
The flexible member is cut on the surface according to the shape of the cemented carbide member,
A cable protection member, wherein the cemented carbide member is embedded in a cut position and disposed in a zebra shape on the surface of the flexible member. The cable protection member according to any one of claims 1 to 3,
A cable protection member, wherein the cemented carbide member has a plate shape or a rod shape. The cable protection member according to any one of claims 1 to 4,
A cable protection member comprising ring-shaped convex portions over the entire circumference of the flexible member at positions of both ends of the protection member main body.

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