Support wire separation tool, wire pulling tool, and support wire separation method
The support wire separation tool simplifies the removal of core cables from overhead cables with integrated support wires by using a tool with a main body, clamping body, and cutting wire, reducing costs and streamlining the process.
Patent Information
- Application Number
- JP2023191246
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-11-09
- Publication Date
- 2025-05-21
AI Technical Summary
Existing methods for removing the core cable portion of overhead cables with integrated support wires are cumbersome and costly, as they require laying new support wires and cutting the entire cable, complicating the process and increasing costs.
A support wire separation tool with a main body, clamping body, pulling wire, and cutting wire is used to separate the core cable from the support wire, allowing reuse of the support wire without laying new wires, and a wire-pulling tool for efficient separation.
Simplifies the process and reduces costs by enabling the reuse of support wires, avoiding the need to lay new wires and allowing for efficient cutting of the neck portion.
Smart Images
Figure 2025078931000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a support wire separation tool for separating a support wire and a core cable when an overhead cable which is integrally formed with the support wire, a core cable and a neck portion connecting them has already been laid overhead, a wire pulling tool for passing the support wire separation tool through the support wire separation tool, and a support wire separation method. [Background technology]
[0002] When laying metal or optical cables aerial on utility poles, it is common to use support wires, and depending on the type of cable, it is very common to use overhead cables with integrated support wires, which are constructed integrally with the support wire, the core cable (metal cable or optical cable), and the neck that connects them. In addition, when laying optical cables aerial, it is common to lay a wiring rod in advance, connect the optical cable to the end of the rod, and then retrieve the wiring rod to lay the optical cable.
[0003] As in Patent Document 1 and Patent Document 2, overhead cables with integrated support wires are integrally constructed with a support wire, a core cable, and a neck that connects them. It is not uncommon to use the support wire portion of these overhead cables with integrated support wires to lay cables without support wires. In other words, other cables are laid in a state where they are hanging from the overhead cable with integrated support wire. In this case, a spiral hanger is also used.
[0004] In the above-mentioned situation, when the core cable portion of the overhead cable with integrated support wire becomes unnecessary and is to be removed, no consideration has been given to reusing the support wire portion of the overhead cable with integrated support wire. Conventionally, since other cables are already hanging from this overhead cable with integrated support wire, it is necessary to lay only the new support wire and then cut and remove the overhead cable with integrated support wire, which makes the work very complicated and increases costs.
[0005] In response to this, the applicant of the present application has invented and filed a patent application for a support wire separation tool and a support wire separation method. The support wire separation tool is for separating a support wire from a core cable when an overhead cable, which is integrally formed of the support wire, the core cable, and a neck portion connecting them, has already been laid overhead, and is characterized in that the support wire separation tool has a main body that is attached to cover the overhead cable and is slidable in the length direction of the overhead cable, and a cutter for cutting the neck portion is provided on the inner wall portion of the main body. [Prior art documents] [Patent documents]
[0006] [Patent Document 1] Patent No. 3571500 [Patent Document 2] Patent No. 6748546 Summary of the Invention [Problem to be solved by the invention]
[0007] In the above-mentioned situation, when the core cable portion of the overhead cable with integrated support wire becomes unnecessary and is to be removed, no consideration has been given to reusing the support wire portion of the overhead cable with integrated support wire. Conventionally, since other cables are already hanging from this overhead cable with integrated support wire, it is necessary to lay only the new support wire and then cut and remove the overhead cable with integrated support wire, which makes the work very complicated and increases costs.
[0008] In addition, with the support wire separation tool previously applied for by the applicant, when the core cable portion of an overhead cable with an integrated support wire becomes unnecessary and needs to be removed, it is possible to remove only the core cable portion of the overhead cable with integrated support wire, leaving the support wire in place and utilizing it as is, thereby eliminating the need to lay a new support wire, thereby simplifying and streamlining the work and contributing to cost reduction.Since it is attached to cover the overhead cable, it has an excellent structure that will not fall off unexpectedly during work.However, if components such as clips are attached to the overhead cable including the support wire and core cable, the components cannot be avoided because of the structure that covers the overhead cable, and it may be necessary to remove the components in advance, which can be cumbersome.
[0009] The present invention has been developed in consideration of the above-mentioned problems, and provides a support wire separation tool, a wire pulling tool, and a support wire separation method that, when the core cable portion of an overhead cable with an integrated support wire becomes unnecessary and needs to be removed, can remove only the core cable portion of the overhead cable with integrated support wire, leaving the support wire and utilizing it as is, thereby eliminating the need to lay a new support wire. [Means for solving the problem]
[0010] The present invention solves the above-mentioned problem, and the invention of claim 1 is a support wire separation tool for separating a support wire and a core cable when an overhead cable integrally composed of a support wire, a core cable, and a neck portion connecting them has already been laid aloft, the support wire separation tool being characterized in that it is provided with a main body for connecting to a wire-pulling rod used to operate the support wire separation tool, a clamping body that clamps the neck portion from both sides with a predetermined gripping force and has a slidable pressing portion, a pulling wire for rotatably connecting the main body and the clamping body, and a cutting wire that is detachably attached to the clamping body in a ring shape and abuts against the neck portion to cut it.
[0011] The invention of claim 2 is a support wire separation tool for separating the support wire and the core cable when an overhead cable integrally composed of the support wire, the core cable, and a neck portion connecting them has already been laid aloft, characterized in that the support wire separation tool has a main body for connecting to a wire-pulling rod used to operate the support wire separation tool, and a cutting wire that is detachably attached to the main body in a ring shape and abuts against the neck portion to cut it.
[0012] The invention of claim 3 is a wire-pulling tool used when pulling a wire-pulling rod used to pull a support wire separation tool for separating the support wire and the core cable when an overhead cable integrally composed of a support wire, a core cable, and a neck portion connecting them has already been laid overhead, characterized in that the wire-pulling tool has a main body for connecting to the wire-pulling rod, and a clamping body attached to the main body and having a pressing portion for clamping the neck portion from both sides with a predetermined gripping force.
[0013] The invention of claim 4 is the wire-pulling tool according to claim 3, characterized in that the main body and the clamping body of the wire-pulling tool are attached rotatably around an axis extending in the longitudinal direction of the wire-pulling rod.
[0014] The invention of claim 5 relates to a method for separating a support wire from a core cable in a state where an overhead cable integrally composed of a support wire, a core cable, and a neck portion connecting them has already been laid overhead, the method comprising the steps of: a support wire separation tool provided with a main body for connection to a wire-passing rod used to operate the support wire separation tool; a clamping body for clamping the neck portion from both sides with a predetermined gripping force and having a slidable pressing portion; a pulling wire for rotatably connecting the main body and the clamping body; and a cutting wire detachably attached to the clamping body in a ring shape and for abutting against the neck portion to cut it; and a main body for connection to the wire-passing rod; and a clamping body attached to the main body and having pressing portions for clamping the neck portion from both sides with a predetermined gripping force, the clamping body being rotatably attached about an axis along the length of the wire-passing rod. The method for separating the overhead cable using a supporting wire separation tool connected to the supporting wire separation tool includes, first, clamping the clamping body of the supporting wire separation tool connected to the starting end of the supporting wire rod to the neck portion, and pushing the supporting wire rod along the support wire so that the supporting wire separation tool slides along the neck portion of the overhead cable to follow the twist and lay the supporting wire rod to the end point, second, gripping and installing the neck portion with the clamping body of the supporting wire separation tool so that the cutting wire of the supporting wire separation tool abuts against the neck portion at the separation start position of the overhead cable, and third, connecting the supporting wire separation tool to the end end of the supporting wire separation tool after laying, and pulling the supporting wire rod so that the cutting wire of the supporting wire separation tool cuts the neck portion to separate the supporting wire and the core cable.
[0015] The invention of claim 6 is a method for separating a support wire and a core cable when an overhead cable integrally composed of a support wire, a core cable, and a neck portion connecting them has already been laid overhead, the method comprising the steps of: a support wire separation tool provided with a main body for connecting to a wire-pulling rod used to operate the support wire separation tool, and a cutting wire detachably attached in a ring shape to the main body and abutting against the neck portion to cut it; and a wire-pulling tool attached rotatably around an axis extending in the longitudinal direction of the wire-pulling rod, the method comprising the steps of: The method includes, first, clamping the clamping body of the wire pulling tool connected to the starting end of the wire pulling rod to the neck portion, and pushing the wire pulling rod along the support wire so that the wire pulling tool slides along the neck portion of the overhead cable to follow the twist and lay the wire pulling rod to the end point, second, positioning the support wire separation tool so that the cutting wire of the support wire separation tool abuts the neck portion at the separation start position of the overhead cable, and third, connecting the support wire separation tool to the end end of the wire pulling rod that has been laid, and pulling the wire pulling rod causes the cutting wire of the support wire separation tool to cut the neck portion and separate the support wire and the core cable. Effect of the Invention
[0016] When the core cable portion of an overhead cable with an integrated support wire becomes unnecessary and needs to be removed, the support wire separation tool of the present invention can remove only the core cable portion of the overhead cable with an integrated support wire, leaving the support wire and utilizing it as is, thereby making it unnecessary to lay a new support wire, thereby simplifying the work and contributing to cost reduction. Furthermore, by using a wire to cut the neck, it is possible to remove the overhead cable while avoiding obstacles such as clips attached to the cable. [Brief description of the drawings]
[0017] [Figure 1] 1A to 1F are diagrams of a first embodiment of a support wire separation tool of the present invention, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view. [Diagram 2] 1A to 1F are diagrams of a second embodiment of a support wire separation tool of the present invention, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view. [Diagram 3] 1A to 1F are diagrams of one embodiment of a wire pulling tool of the present invention, in which (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view. [Figure 4] FIG. 1 shows a diagram of the wire pulling tool of the present invention attached to an overhead cable with an integrated support wire, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) are perspective views from four directions. [Diagram 5] 1 is an image showing a state in which the neck portion of an overhead cable is cut using the support wire separation tool of the first embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] The support wire separation tool according to the present invention will be described below with reference to the drawings. In this embodiment, the overhead cable A is composed of a support wire A1 having a circular cross section and a core cable A2 having a circular cross section, and a neck A3 connecting them. In this embodiment, the support wire A1 is in a front view with the core cable A2 on top, but the positional relationship may be reversed, and the cross-sectional shape may not be circular. In addition, the wire-pulling rod B may be a commercially available one used in overhead distribution. FIG. 1 is a diagram of a first embodiment of the support wire separation tool of the present invention, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view. FIG. 2 is a diagram of a second embodiment of the support wire separation tool of the present invention, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view. Fig. 3 is a diagram of one embodiment of the wire pulling tool of the present invention, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view. Fig. 4 is a diagram of the wire pulling tool of the present invention attached to an overhead cable with an integrated support wire, where (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a perspective view from four directions. Fig. 5 is an image of the state in which the neck of an overhead cable is cut using the support wire separation tool of the first embodiment of the present invention.
[0019] 1 is a diagram of a first embodiment of a support wire separation tool 100 of the present invention, and the support wire separation tool 100 is provided with a main body 10 for connecting to a wire-pulling rod B, a clamping body 20 that clamps the neck A3 from both sides with a predetermined gripping force and has a slidable pressing part 21, a pulling wire 30 for rotatably connecting the main body 10 and the clamping body 20, and a cutting wire 40 that is detachably attached to the clamping body 20 in a ring shape and abuts against the neck A3 to cut it. Also, an image of the state in which the neck of the overhead cable is actually cut is shown in FIG. 5.
[0020] 1 and 5, the main body 10 of the support wire separation tool 100 has a cylindrical shape into which the end of the wiring rod B can be inserted and locked. The cross-sectional shape of the cylinder may be changed according to the shape of the wiring rod B.
[0021] In this embodiment, the clamping body 20 is made by bending a stainless steel wire, and has a symmetrical shape as shown in Fig. 1, and is shaped to avoid the core cable A2 because the support wire separation tool 100 passes under the overhead cable A. The tip of the clamping body 20 is a slidable pressing part 21 that holds the neck A3 from both sides with a predetermined gripping force. This allows the neck A3 to be cut reliably along the neck A3. This is particularly effective when the cutting distance is long.
[0022] The pulling wire 30 is a member for rotatably connecting the main body 10 and the clamping body 20, and as shown in Fig. 1, the main body 10 and the clamping body 20 are connected by two wires. This allows the structure to follow the twisting of the overhead cable A.
[0023] The cutting wire 40 is detachably attached to the clamping body 20 in the shape of a ring, and is a member that abuts against the neck portion A3 to cut it. The material of the wire may be twisted strands of wire, but a single steel wire such as a piano wire is often less durable but has less frictional resistance when cutting and is easier to cut.
[0024] FIG. 2 is a diagram of a second embodiment of the support wire separation tool 100 of the present invention, which comprises a main body 10 for connecting to a wire-pulling rod B, and a cutting wire 40 that is removably attached to the main body 10 in a ring shape and abuts against the neck portion A3 to cut it.
[0025] The configuration of the support wire separation tool 100 of the second embodiment is similar to that of the first embodiment, but does not include the clamping body 20. Either tool may be used to cut the neck portion A3 depending on the state of the overhead cable A that is laid overhead. In particular, the support wire separation tool 100 of the second embodiment has a short cutting distance and is easy to use when the overhead cable A is little twisted.
[0026] 3 and 4 are diagrams of the wire-passing tool 200, which is used to pull the support wire separation tool 100. The wire-passing tool 200 includes a main body 210 for connecting to the wire-passing rod B used when passing the wire through the wire, and a clamping body 220 having a pressing portion 230 attached to the main body 210 and clamping the neck portion A3 from both sides with a predetermined gripping force.
[0027] The main body 210 has a cylindrical shape into which the tip of the wiring rod B can be inserted and locked, similar to the main body 10 of the support wire separation tool 100. The cross-sectional shape of the cylinder may be changed according to the shape of the wiring rod B.
[0028] In this embodiment, the clamping body 220 is made by bending a stainless steel wire, and has a symmetrical shape as shown in Fig. 3, and the wire pulling tool 200 is shaped so as to be able to avoid the aerial cable A. The tip portion of the clamping body 220 is a pressing part 230 that clamps the neck part A3 from both sides with a predetermined gripping force and is slidable.
[0029] 4, the wire-pulling tool 200 is configured such that, with the wire-pulling rod B attached to the main body 210, the pressing part 230 of the clamping body 220 is attached to the neck part A3 and pressed to pull the wire-pulling rod B. The wire-pulling tool 200 can reliably pull the wire A while accommodating twists in the overhead cable A.
[0030] The procedure for separating the overhead cable A using the support wire separation tool 100 of the first embodiment will be described. First, the pressing portion 230 of the clamping body 220 of the wire pulling tool 200 connected to the starting end of the wire pulling rod B is clamped around the neck A3, and the wire pulling rod 200 is pushed along the support wire A3, whereby the wire pulling tool 200 slides along the neck A3 of the overhead cable A to follow the twist, and the wire pulling rod B is laid to the end point.
[0031] Secondly, the neck portion A3 is gripped and installed by the pressing portion 21 of the clamping body 20 of the support wire separation tool 100 so that the cutting wire 40 of the support wire separation tool 100 abuts against the neck portion A3 at the separation start position of the overhead cable A.
[0032] Third, the support wire separation tool 100 is connected to the end of the wire-pulling rod B that has been laid, and by pulling the wire-pulling rod B, the cutting wire 40 of the support wire separation tool 100 cuts the neck B while following the twist, thereby separating the support wire A1 and the core cable A2.
[0033] Similarly, a procedure for separating the overhead cable A using the support wire separation tool 100 of the second embodiment will be described. First, the pressing portion 230 of the clamping body 220 of the wire pulling tool 200 connected to the starting end of the wire pulling rod B is clamped around the neck A3, and the wire pulling rod B is pushed along the support wire A3, whereby the wire pulling tool 200 slides along the neck A3 of the overhead cable A to follow the twist, and the wire pulling rod 200 is laid to the end point.
[0034] Secondly, the cutting wire 40 of the support wire separation tool 100 is placed in contact with the neck portion A3 of the overhead cable A at the separation start position.
[0035] Third, the support wire separation tool 100 is connected to the end of the wire-pulling rod B that has been laid, and by pulling the wire-pulling rod B, the cutting wire 40 of the support wire separation tool 100 cuts the neck portion A3, separating the support wire A1 and the core cable A2. [Industrial Applicability]
[0036] The support wire separation tool 100 of the present invention is a tool for aerial separation of an aerial cable A consisting of a support wire A1, a core cable A2 and a neck portion A3 connecting them, but it can also be used to separate cables that are not aerial. [Explanation of symbols]
[0037] A. Aerial cable A1 support line A2 core cable A3 neck B Wire Pulling Rod 100 Support Wire Separation Tool 10 Main unit 20 Clamping body 21 Pressing section 30 Towing Wire 40 Cutting Wire 200 Wire Pulling Tool 210 Main unit 220 Clamping body 230 Pressing part
Claims
1. A support wire separation tool for separating a support wire from a core cable in a state where an aerial cable integrally formed with a support wire, a core cable, and a neck portion connecting the support wire and the core cable has already been laid aloft, comprising: a body for connecting to a wire pulling rod used to operate the support wire separation tool; a clamping body that clamps the neck portion from both sides with a predetermined gripping force and has a slidable pressing portion; A pulling wire for rotatably connecting the main body and the clamping body; a cutting wire detachably attached to the clamping body in a ring shape to come into contact with the neck portion and cut it; A support wire separation tool comprising:
2. A support wire separation tool for separating a support wire from a core cable in a state where an aerial cable integrally formed with a support wire, a core cable, and a neck portion connecting the support wire and the core cable has already been laid aloft, comprising: a body for connecting to a wire pulling rod used to operate the support wire separation tool; a cutting wire detachably attached to the main body in a ring shape to abut against the neck portion and cut it; A support wire separation tool comprising:
3. A wire pulling tool used to pull a wire pulling rod that is used to pull a support wire separation tool for separating a support wire from a core cable in a state where an overhead cable integrally formed with a support wire, a core cable, and a neck portion connecting the support wire and the core cable has already been laid overhead, comprising: A body for connecting to the wire-pulling rod; a clamping body having a pressing portion attached to the main body and clamping the neck portion from both sides with a predetermined gripping force; A wire pulling tool comprising:
4. The wire-pulling tool according to claim 3, wherein the main body and the clamping body of the wire-pulling tool are attached so as to be rotatable about an axis extending in the longitudinal direction of the wire-pulling rod.
5. A method for separating a support wire from a core cable in a state where an aerial cable integrally formed with a support wire, a core cable, and a neck portion connecting the support wire and the core cable has already been laid in the air, comprising the steps of: A support wire separation tool including a main body for connecting to a wire-pulling rod used to operate the support wire separation tool, a clamping body that clamps the neck portion from both sides with a predetermined gripping force and has a slidable pressing portion, a pulling wire for rotatably connecting the main body and the clamping body, and a cutting wire that is detachably attached to the clamping body in a ring shape and abuts against the neck portion to cut it; a wire-pulling tool including a main body for connecting to the wire-pulling rod, a clamping body attached to the main body and having a pressing portion for clamping the neck portion from both sides with a predetermined gripping force, and the clamping body is attached so as to be rotatable about an axis in the longitudinal direction of the wire-pulling rod; The method for performing the separation using First, the clamping body of the wire-pulling tool connected to the start end of the wire-pulling rod is clamped to the neck portion, and the wire-pulling rod is pushed along the support wire, so that the wire-pulling tool slides along the neck portion of the overhead cable to follow the twist, thereby laying the wire-pulling rod to the end point; Secondly, the neck portion is gripped and installed by the clamping body of the support wire separation tool so that the cutting wire of the support wire separation tool abuts against the neck portion at the separation start position of the overhead cable; Thirdly, the support wire separation tool is connected to the end of the wire-passing rod that has been laid, and the wire-passing rod is pulled so that the cutting wire of the support wire separation tool cuts the neck portion, thereby separating the support wire from the core cable. A method for separating a support wire from a support wire separating tool, comprising:
6. A method for separating a support wire from a core cable in a state where an aerial cable integrally formed with a support wire, a core cable, and a neck portion connecting them has already been laid in the air, comprising the steps of: A support wire separation tool including a main body for connecting to a wire-pulling rod used to operate the support wire separation tool, and a cutting wire detachably attached to the main body in a ring shape for contacting and cutting the neck portion; a wire-pulling tool including a main body for connecting to the wire-pulling rod, a clamping body attached to the main body and having a pressing portion for clamping the neck portion from both sides with a predetermined gripping force, and the clamping body is attached so as to be rotatable about an axis in the longitudinal direction of the wire-pulling rod; The method for performing the separation using First, the clamping body of the wire-pulling tool connected to the start end of the wire-pulling rod is clamped to the neck portion, and the wire-pulling rod is pushed along the support wire, so that the wire-pulling tool slides along the neck portion of the overhead cable to follow the twist, thereby laying the wire-pulling rod to the end point; Secondly, the cutting wire of the support wire separation tool is placed in contact with the neck portion of the overhead cable at the separation start position; Thirdly, the support wire separation tool is connected to the end of the wire-passing rod that has been laid, and the wire-passing rod is pulled so that the cutting wire of the support wire separation tool cuts the neck portion, thereby separating the support wire from the core cable. A method for separating a support wire from a support wire separating tool, comprising:
Citation Information
Patent Citations
aerial optical cable
JP3571500B2
Aerial cable
JP6748546B2