Cable arrangement method

Abstract

A cable arrangement method according to the present disclosure includes: a step for accommodating a cable 300 and a support wire 200 installed between utility poles in the vicinity of a first utility pole 120 in a hollow space 406 of a spiral hanger unit 400; a step for repeating the connection of the spiral hanger unit 400 toward a second utility pole 140; a step for accommodating the plurality of cables 300 and the support wire 200 in the hollow space 406 of a second spiral hanger unit 440 in the vicinity of the second utility pole 140; a step for fixing the end of the first spiral hanger unit 420 on the first utility pole side and the end of the second spiral hanger unit 440 on the second utility pole side to the support wire 200; and a step for pulling out the unnecessary cable from one utility pole side from the plurality of bundled cables 300. Thus, a plurality of cables installed between the utility poles can be easily arranged.

Description

How to organize cables

[0001] The present disclosure relates to a method for organizing cables.

[0002] Cables for power lines, communication lines, etc. are usually installed between utility poles. If the installed cables become tangled between utility poles or hang down to the ground, they can obstruct the passage of vehicles and pedestrians and spoil the scenery.

[0003] In some countries or regions, the cables strung between utility poles may contain unnecessary cables, such as cables that have become unusable due to breakage or cables that have been illegally strung for the purpose of stealing electricity.

[0004] Special Publication No. 2021-530186

[0005] Utility poles with a large amount of unnecessary cables installed as described above not only spoil the landscape, but also pose a risk of collapse due to natural disasters such as typhoons, and may cause fires. Another problem is that it is difficult to install new cables on such utility poles. Therefore, there is a demand to remove unnecessary cables and leave only the necessary cables.

[0006] For example, the present inventor has disclosed a method in which a spiral hanger is hung from a messenger wire installed between utility poles and a cable is housed in the internal space of the spiral hanger (for example, Patent Document 1). This method can prevent the cable from becoming tangled or sagging when installing a new cable. The present inventor has investigated whether an adaptation of this method can be applied to solve the above-mentioned problems.

[0007] An object of the present disclosure is to provide a cable organizing method that can easily organize multiple cables installed between utility poles.

[0008] In order to achieve the above object, according to one aspect of the present disclosure, there is provided a method for organizing a plurality of cables strung between utility poles, comprising the steps of: accommodating the plurality of cables together with a support wire strung between the utility poles in a hollow space of a first spiral hanger unit in the vicinity of a first utility pole; installing the first spiral hanger unit, and then accommodating the plurality of cables and the support wire in a hollow space of a new spiral hanger unit from the first utility pole toward a second utility pole, and repeating the process of connecting adjacent spiral hanger units; accommodating the plurality of cables and the support wire in a hollow space of a second spiral hanger unit in the vicinity of the second utility pole; and fixing an end of the first spiral hanger unit on the first utility pole side and an end of the second spiral hanger unit on the second utility pole side to the support wire; and a step of pulling out unnecessary cables from one of the plurality of cables bundled by the plurality of spiral hanger units from one utility pole side.

[0009] According to the present disclosure, multiple cables installed between utility poles can be easily organized.

[0010] FIG. 1 is a schematic diagram showing a cable installation state before arrangement. FIG. 2 is a schematic diagram showing a first spiral hanger unit installation step according to a first embodiment of the present disclosure. FIG. 3 is a schematic diagram showing a spiral hanger unit connection step according to the same embodiment. FIG. 4 is a schematic diagram showing a second spiral hanger unit installation step according to the same embodiment. FIG. 5 is a schematic diagram showing a spiral hanger unit fixing step according to the same embodiment. FIG. 6 is a schematic diagram showing an unnecessary wire removal step according to the same embodiment. FIG. 7 is a schematic diagram showing a state after arrangement of the cable according to the same embodiment. FIG. 8 is a schematic diagram showing an unnecessary wire removal step according to a second embodiment of the present disclosure. FIG. 9 is a schematic diagram showing a state after unnecessary wire removal according to the same embodiment. FIG. 10 is a schematic diagram showing a lead wire insertion step. FIG. 11 is a schematic diagram showing a lead wire installation step. FIG. 12 is a schematic diagram showing steps of a new cable installation method. FIG. 13 is a schematic diagram showing a towing rope installation step. FIG. 14 is a schematic diagram showing a towing rope insertion step. FIG. 15 is a schematic diagram showing a new cable installation step. FIG. 16 is a schematic diagram showing the steps of the new cable installation method.

[0011] [1. First Embodiment] A cable management method according to a first embodiment of the present disclosure is a method for easily managing multiple cables installed between utility poles. FIG. 1 is a diagram illustrating multiple cables installed between utility poles, showing the state before the cables are organized. For example, as shown in FIG. 1 , when multiple cables 300 are installed between a first utility pole 120 and a second utility pole 140, the cable management method according to this embodiment can be applied to organize the multiple cables 300. Note that, for ease of explanation, FIG. 1 illustrates a case in which three cables 300 are installed between the utility poles 120 and 140. However, the cable management method according to the present disclosure is also useful for bundling a large number of cables 300, such as 10 or 20 cables 300.

[0012] The cable 300 is, for example, a power line or a communication line. Specifically, the cable 300 is, for example, an optical cable, a drop line, etc. The diameter of the cable 300 installed between utility poles is generally about 3 mm to 20 mm.

[0013] A support wire (also called a suspension wire or messenger wire) 200 is installed between the first utility pole 120 and the second utility pole 140. The support wire 200 supports the tension of the installed cable 300 via a fastener 220. For example, a galvanized steel stranded wire may be used for the support wire 200. The cross-sectional area of ​​the support wire 200 is generally 10 mm ２ ~60mm ２ The support wire 200 may also be a self-supporting cable in which the support wire and the cable are integrated. Note that the support wire 200 may not be installed between the first utility pole 120 and the second utility pole 140, and only the cable 300 may be installed. In this case, the cable 300 between the utility poles is supported only by having both ends fixed to the first utility pole 120 and the second utility pole 140.

[0014] One or more fasteners 220 are attached between the first utility pole 120 and the second utility pole 140 so that the support wire 200 supports the weight of the cable 300. The fastener 220 may be, for example, in the form of a wire that can bundle and fix the support wire 200 and the cable 300 together.

[0015] The cables 300 strung between utility poles are usually cables (hereinafter also referred to as "live cables") 320 that have been strung and used by electric power companies or telecommunications companies, but may also include unnecessary cables (hereinafter also referred to as "unwanted cables") 340, such as cables that have become unusable due to a break or the like but have been left as is, or cables that have been illegally strung for the purpose of electricity theft. In the cable organizing method according to this embodiment, after the cables 300 have been strung together, the unnecessary cables 340 are pulled out from one of the utility poles (for example, the side of the first utility pole 120) and removed from among the multiple cables 300.

[0016] Hereinafter, a cable organization method according to this embodiment will be described in detail with reference to FIGS. 2 to 7. FIG. 2 is a schematic diagram showing a first spiral hanger unit installation step according to a first embodiment of the present disclosure. FIG. 3 is a schematic diagram showing a spiral hanger unit connection step according to the same embodiment. FIG. 4 is a schematic diagram showing a second spiral hanger unit installation step according to the same embodiment. FIG. 5 is a schematic diagram showing a spiral hanger unit fixing step according to the same embodiment. FIG. 6 is a schematic diagram showing an unnecessary wire pulling step according to the same embodiment. FIG. 7 is a schematic diagram showing a state after the cable has been organized according to the same embodiment.

[0017] 2 to 7 are schematic illustrations of the steps of the cable management method according to this embodiment, and the sizes of the objects shown may differ from the actual sizes. For ease of explanation, FIGS. 2 to 7 show a case where a worker P performs the work alone, but the work may be performed by multiple people as needed.

[0018] (Step (1-1): First spiral hanger unit installation step) In the cable organizing method according to this embodiment, first, as shown in FIG. 2 , a worker P stores the live wire 320, the unnecessary wire 340, and the support wire 200 in the hollow space 406 of the spiral hanger unit 400 near the first utility pole 120.

[0019] The spiral hanger unit 400 is used to bundle multiple cables 300 together with the support wires 200. The spiral hanger unit 400 is formed, for example, by forming a zinc-plated steel wire into a spiral shape with an inner spiral diameter of 35 mm to 100 mm and coating it with weather-resistant resin. The spiral hanger units 400 are configured so that they can be connected to each other. For example, the spiral hanger units 400 have connectors (not shown) at both ends that can connect the spiral hanger units 400 to each other.

[0020] As shown in FIG. 2 , a worker P winds the spiral hanger unit 400 around the live wires 320, the waste wires 340, and the support wires 200 near the first utility pole 120, bundling the live wires 320, the waste wires 340, and the support wires 200. As a result, the live wires 320 and the waste wires 340 are housed together with the support wires 200 in the hollow space 406 of the spiral hanger unit 400. Note that the worker P uses, for example, an aerial work platform 10 to install the spiral hanger unit 400 at the height at which the cable 300 is installed. Furthermore, if the supports 200 are not installed between the utility poles in advance, the worker P may install the support wires 200 between the utility poles beforehand, and then wind the spiral hanger unit 400 around the live wires 320, the waste wires 340, and the support wires 200, and bundle the live wires 320, the waste wires 340, and the support wires 200.

[0021] When the worker P performs the work of winding the spiral hanger unit 400 around the support wire 200 or the like, if a fastener 220 is attached near the work location, the worker P may remove the fastener 220. The fastener 220 may be removed sequentially as the work progresses, or may be removed as appropriate in advance.

[0022] Hereinafter, when the spiral hanger unit 400 is installed, the end of the spiral hanger unit 400 on the first utility pole 120 side will be referred to as the "first end" and the end of the spiral hanger unit 400 on the second utility pole 140 side will be referred to as the "second end." In addition, the spiral hanger unit 400 attached closest to the first utility pole 120 side will be referred to as the "first spiral hanger unit 420."

[0023] (Step (1-2): Spiral Hanger Unit Connecting Step) Next, the worker P installs the spiral hanger units 400 following the first spiral hanger unit 420 while sequentially connecting them toward the second utility pole 140 side.

[0024] As shown in FIG. 3 , the worker P winds the spiral hanger unit 400 to be installed after the first spiral hanger unit 420 around the live wires 320, the waste wires 340, and the support wires 200, and bundles the live wires 320, the waste wires 340, and the support wires 200. The worker P then connects the second end 424 of the first spiral hanger unit 420 to the first end 402 of the next spiral hanger unit 400. This process of connecting spiral hanger units 400 to each other and bundling the live wires 320, the waste wires 340, and the support wires 200 is repeated toward the second utility pole 140. The worker P uses the aerial work platform 10 or the like to perform the connection work of the spiral hanger units 400 while moving from the first utility pole 120 side to the second utility pole 140 side.

[0025] (Step (1-3): Step of Installing Second Spiral Hanger Unit) In step (1-2), worker P installs the spiral hanger units 400 toward the second utility pole 140, and installs the last spiral hanger unit 400 near the second utility pole 140. The last spiral hanger unit is wound around the live wires 320, the waste wires 340, and the support wires 200, and the live wires 320, the waste wires 340, and the support wires 200 are bundled together. Then, the first end 402 of the last spiral hanger unit 400 is connected to the second end 404 of the spiral hanger unit 400 installed before it. In this way, as shown in FIG. 4 , the live wires 320, the waste wires 340, and the support wires 200 are housed in the hollow space 406 of the spiral hanger unit 400 in all sections between the first utility pole 120 and the second utility pole 140.

[0026] Hereinafter, the spiral hanger unit 400 attached closest to the second utility pole 140 will also be referred to as the "second spiral hanger unit 440." In addition, one or more spiral hanger units 400 attached between the first spiral hanger unit 420 and the second spiral hanger unit 440 will also be referred to as the "intermediate spiral hanger unit 460."

[0027] In steps (1-2) to (1-4), after step (1-1) is performed, the second end 404 of another spiral hanger unit 400 may be attached to the first end 402 of the spiral hanger unit 400 that was installed first, and the connected spiral hanger unit 400 may be sent out toward the second utility pole 140. In this case, by repeating the operation of connecting another spiral hanger unit until the second end 404 of the spiral hanger unit 400 that was installed first reaches the vicinity of the second utility pole 140, the live wire 320, the unnecessary wire 340, and the support wire 200 are accommodated in the hollow space 406 of the spiral hanger unit 400 in all sections between the first utility pole 120 and the second utility pole 140.

[0028] (Step (1-4): Spiral hanger unit fixing step) Then, as shown in FIG. 5, worker P fixes the first end 422 of the first spiral hanger unit 420 and the second end 444 of the second spiral hanger unit 440 to the support wire 200 using terminal clamps 500.

[0029] The end clamp 500 is used to secure the spiral hanger unit 400 to the support wire 200. The end clamp 500 is composed of, for example, one metal bolt and two metal plates with holes corresponding to the metal bolt. After the end of the spiral hanger unit 400 and the support wire 200 are sandwiched between the two metal plates, the metal bolt is inserted into the holes in the two metal plates and tightened to secure the spiral hanger unit 400 to the support wire 200.

[0030] 5 , the worker P fixes the first end 422 of the first spiral hanger unit 420 to the support wire 200 near the first utility pole 120 using the terminal clamp 520. The worker P also fixes the second end 444 of the second spiral hanger unit 440 to the support wire 200 near the second utility pole 140 using the terminal clamp 540. This allows the spiral hanger units 400 to be maintained in a continuously installed state across the first utility pole 120 and the second utility pole 140.

[0031] (Step (1-5): Step of Pulling Out Unwanted Wires) Thereafter, as shown in Fig. 6, a worker P pulls out the unnecessary wires 340 from one of the utility pole sides (for example, the first utility pole 120 side) from among the multiple cables 300 housed in the spiral hanger unit 400. In addition, the method of separating the unnecessary wires 340 from the cables 300 may be appropriately performed using well-known techniques.

[0032] 2 to 6, only the live wires 320 are housed in the hollow space 406 of the spiral hanger unit 400, as shown in FIG. 7. By removing unused cables (i.e., unnecessary wires 340) from the cables 300 installed between the utility poles 120 and 140, the cables 300 housed in the hollow space 406 of the spiral hanger unit 400 are organized, preventing the cables 300 from becoming tangled or hanging down to the ground. Furthermore, by removing the unnecessary wires 340, space can be secured in the hollow space 406 of the spiral hanger unit 400 for wiring new cables 300.

[0033] [2. Second embodiment] Next, a second embodiment of the cable management method according to the present disclosure will be described. The cable management method according to this embodiment differs from the first embodiment in the timing at which unnecessary cables 340 are removed from the cables 340 installed between utility poles.

[0034] For example, when the cables 300 installed between the utility poles 120, 140 are intricately tangled, it may be difficult to accommodate the cables 300 within the hollow space 406 of the spiral hanger unit 400. In such a case, by first removing unnecessary cables (i.e., unnecessary wires 340) from the cables 300 installed between the utility poles and untangling the cables 300, it becomes easier to accommodate the necessary cables (i.e., live wires 320) within the hollow space 406 of the spiral hanger unit 400.

[0035] A cable management method according to a second embodiment will now be described with reference to FIGS. 8 and 9 . FIG. 8 is a schematic diagram illustrating the unnecessary wire removal process according to this embodiment. FIG. 9 is a schematic diagram illustrating the state after unnecessary wire removal according to this embodiment. Note that, as with FIGS. 1 to 7 , for ease of explanation, FIGS. 8 and 9 also show two live wires 320 and one unnecessary wire 340 stretched between utility poles 120 and 140 before management. Furthermore, FIGS. 8 and 9 are schematic illustrations of each step of the cable management method according to this embodiment, and the sizes of objects and the like shown may differ from the actual sizes. Furthermore, for ease of explanation, FIGS. 8 and 9 show a case in which a worker P performs the work alone, but multiple people may perform the work if necessary.

[0036] (Step (2-1): Unwanted Wire Removal Step) First, as shown in FIG. 8 , a worker P cuts an unnecessary wire 340 from among the multiple cables 300 and removes it from between the utility poles 120, 140. While moving between the utility poles 120, 140 using an aerial work platform 10 or the like, the worker P cuts the unnecessary wire 340 into short pieces and removes it. As a cutting means 900 for the unnecessary wire 340, for example, a cable cutter or the like may be used. Note that the cutting means 900 is not limited to this example, and any well-known technology may be used as appropriate. By removing the unnecessary wire 340 and untangling the live wire 320, as shown in FIG. 9 , only the live wire 320 is installed between the first utility pole 120 and the second utility pole 140, with the cables 300 no longer entangled.

[0037] (Step (2-2): First spiral hanger unit installation step) Next, after the state in which only the live wire 320 remains as shown in FIG. 9 , the worker P accommodates the live wire 320 and the support wire 200 in the hollow space 406 of the spiral hanger unit 400 near the first utility pole 120. This step may be performed in the same manner as step (1-1) in the first embodiment. As a result, the live wire 320 is accommodated together with the support wire 200 in the hollow space 406 of the first spiral hanger unit 420.

[0038] (Step (2-3): Spiral hanger unit connecting step) Furthermore, following the first spiral hanger unit 420, the worker P installs the intermediate spiral hanger units 460 while sequentially connecting them toward the second utility pole 140 side. This step may be carried out in the same manner as step (1-2) in the first embodiment. Using the aerial work platform 10 or the like, the worker P performs the work of connecting the spiral hanger units 400 while moving from the first utility pole 120 side to the second utility pole 140 side, repeating the work of connecting the spiral hanger units 400 to each other and bundling the live wires 320 and support wires 200.

[0039] (Step (2-4): Step of Installing Second Spiral Hanger Unit) Thereafter, in step (2-3), the worker P installs the spiral hanger unit 460 toward the second utility pole 140, and installs the second spiral hanger unit 440 near the second utility pole 140. This step may be carried out in the same manner as step (1-3) in the first embodiment. As a result, the live wires 320 and the support wires 200 are housed in the hollow space 406 of the spiral hanger unit 400 in all sections between the first utility pole 120 and the second utility pole 140.

[0040] In steps (2-3) to (2-4), similarly to the first embodiment, after carrying out step (2-2), the second end 404 of another spiral hanger unit 400 may be attached to the first end 402 of the spiral hanger unit 400 that was installed first, and the connected spiral hanger unit 400 may be sent out toward the second utility pole 140. In this case, by repeating the operation of connecting other spiral hanger units until the second end 404 of the spiral hanger unit 400 that was installed first reaches the vicinity of the second utility pole 140, the live wires 320 and the support wires 200 are accommodated in the hollow spaces 406 of the spiral hanger units 400 in all sections between the first utility pole 120 and the second utility pole 140.

[0041] (Step (2-5): Spiral Hanger Unit Fixing Step) Then, the worker P fixes the first end 422 of the first spiral hanger unit 420 and the second end 444 of the second spiral hanger unit 440 to the support wire 200 using the terminal clamp 500. This step may be carried out in the same manner as step (1-5) according to the first embodiment.

[0042] On the first utility pole 120 side, the worker P fixes the first end 422 of the first spiral hanger unit 420 to the support wire 200 using the terminal clamp 520. Also, on the second utility pole 140 side, the worker P fixes the second end 444 of the second spiral hanger unit 440 to the support wire 200 using the terminal clamp 540. This makes it possible to maintain the spiral hanger units 400 in a state in which they are continuously installed between the first utility pole 120 and the second utility pole 140. Finally, as shown in FIG. 7 , only the live wire 320 is housed in the hollow space 406 of the spiral hanger unit 400.

[0043] The cable management method according to the second embodiment of the present disclosure has been described above. According to the cable management method according to this embodiment, even if it is difficult to accommodate the cables 300 in the hollow space 406 of the spiral hanger unit 400 because the cables 300 installed between the utility poles 120, 140 are intricately tangled, for example, it is possible to first remove the unnecessary wires 340 and thereby accommodate only the live wires 320 in the hollow space 406 of the spiral hanger unit 400. As a result, as in the first embodiment, the cables 300 accommodated in the hollow space 406 of the spiral hanger unit 400 are organized, and it is possible to prevent the cables 300 from becoming tangled or hanging down to the ground.

[0044] 3. Installation of a New Cable When the cable 300 is organized by carrying out the cable organization method according to the above embodiment, only the live wire 320 is housed in the hollow space 406 of the spiral hanger unit 400, as shown in Fig. 7. After the cable 300 has been organized in this manner, it is also possible to install a new cable 300 between the utility poles 120 and 140. A method for installing a new cable will be described below.

[0045] [3-1. Installation Example 1] First, an example of a method for installing a new cable 360 ​​will be described with reference to FIGS. 10 to 12. FIG. 10 is a schematic diagram showing the lead wire insertion process. FIG. 11 is a schematic diagram showing the lead wire installation process. FIG. 12 is a schematic diagram showing the steps of a method for installing a new cable. The following steps are performed after the above-described steps (1-1) to (1-5) are performed, or after the above-described steps (2-1) to (2-5) are performed. For ease of explanation, FIGS. 10 to 12 show a case where a worker P performs the work alone, but the work may be performed by multiple people as needed.

[0046] (Step (3-1): Lead wire insertion step) After ensuring that only the live wire 320 is housed in the hollow space 406 of the spiral hanger unit 400 attached between the utility poles 120 and 140 as shown in Figure 7, worker P first inserts the lead wire 700 into the hollow space 406 of the spiral hanger unit 400.

[0047] The lead wire 700 is used to pull the new cable 360 ​​into the hollow space 406 of the spiral hanger unit 400 attached between the utility poles 120 and 140. The lead wire 700 is, for example, a fiber-reinforced plastics (FRP) rod or a carbon-fiber-reinforced plastics (CFRP) rod coated with a lubricious resin such as polypropylene (PP), acrylonitrile acrylic styrene (AAS), or polyamide (PA). For example, as shown in FIG. 10 , a worker P connects a shuttle runner 600 to the tip of the lead wire 700 and inserts the shuttle runner 600 into the hollow space 406 of the spiral hanger unit 400 from one of the utility poles (e.g., the first utility pole 120). The lead wire 700 is wound around a dedicated reel 920 and accommodated therein, and the worker P performs the work while pulling out the lead wire 700 as needed.

[0048] The shuttle runner 600 is used as a guide when inserting the lead wire 700 into the hollow space 406 of the spiral hanger unit 400. The shuttle runner 600 is, for example, an ellipsoid made up of several wires. By using the shuttle runner 600 to feed the lead wire 700 into the hollow space 406 of the spiral hanger unit 400, the lead wire 700 is prevented from falling out of the hollow space 406 of the spiral hanger unit 400, and the lead wire 700 can be inserted smoothly. Furthermore, by using the shuttle runner 600, the tip of the lead wire 700 can be prevented from becoming tangled with the spiral hanger unit 400 or other cables 300.

[0049] The worker P feeds out the shuttle runner 600 from the first utility pole 120 toward the second utility pole 140 until it reaches the vicinity of the second utility pole 140. When the shuttle runner 600 reaches the vicinity of the second utility pole 140, the worker P removes the shuttle runner 600 from the end of the lead wire 700, as shown in FIG. 11 . In this manner, the lead wire 700 is inserted into the hollow space 406 of the spiral hanger unit 400. Note that in the step (3-1), the lead wire 700 may be inserted into the hollow space 406 of the spiral hanger unit 400 by feeding out the shuttle runner 600 from the second utility pole 140 toward the first utility pole 120 until it reaches the vicinity of the first utility pole 120.

[0050] (Step (3-2): New Cable Installation Step) Next, as shown in FIG. 11 , the worker P attaches the front end of the new cable 360 ​​to the rear end of the lead wire 700 near the first utility pole 120. Then, as shown in FIG. 12 , the worker P retracts the lead wire 700 near the second utility pole 140 until the end of the lead wire 700 on the second utility pole 140 side reaches the vicinity of the second utility pole 140. The worker P may also wind the lead wire around a dedicated reel 920, for example. As a result, the new cable 360 ​​connected to the lead wire 700 is retracted into the hollow space 406 of the spiral hanger unit 400. The new cable 360 ​​is stored in a wound state around a cable drum 940, and the worker P performs the work while appropriately retracting the new cable 360.

[0051] 12, the lead wire 700 is then removed from the end of the new cable 360 ​​that has been inserted into the hollow space 406 of the spiral hanger unit 400 near the second utility pole 140. In this way, the new cable 360 ​​can be installed between the utility poles 120 and 140.

[0052] In step (3-2), one end of the new cable 360 ​​may be attached to one end of the lead wire 700 near the second utility pole 140. In this case, the new cable 360 ​​can be drawn into the hollow space 406 of the spiral hanger unit 400 by drawing the lead wire 700 from near the first utility pole 120. After drawing the new cable 360, the worker P simply removes the lead wire 700 from the end of the new cable 360 ​​near the first utility pole 120.

[0053] The above describes one example (Installation Example 1) of a method for installing a new cable. In Installation Example 1, the new cable 360 ​​is installed by using a shuttle runner 600 to pull the lead wire 700, one end of which is connected to one end of the new cable 360, into the hollow space 406 of the spiral hanger unit 400 attached between the utility poles 120 and 140. This new cable installation method is suitable, for example, when the distance between the utility poles 120 and 140 is short, or when installing a relatively lightweight new cable 360 ​​such as an optical drop cable.

[0054] [3-2. Installation Example 2 (Installation of a New Cable Using a Tow Rope)] When the distance between the utility poles 120 and 140 is long, or when the weight of the new cable 360 ​​is large, it may not be possible to pull in the new cable 360 ​​manually as in the above installation example 1. In such cases, the new cable 360 ​​may be pulled using a tow rope 800.

[0055] A method for installing a new cable 360 ​​using a tow rope 800 will be described below with reference to Figures 13 to 16. Figure 13 is a schematic diagram showing the tow rope installation process. Figure 14 is a schematic diagram showing the tow rope insertion process. Figure 15 is a schematic diagram showing the new cable installation process. Figure 16 is a schematic diagram showing the steps of a new cable installation method. Each of the following steps is also performed after the above-mentioned steps (1-1) to (1-5) or steps (2-1) to (2-5) have been performed. Furthermore, for ease of explanation, Figures 13 to 16 show a case where a worker P performs the work alone, but the work may be performed by multiple people as needed.

[0056] (Step (4-1): Lead Wire Insertion Step) First, the worker P uses the shuttle runner 600 to insert the lead wire 700 into the hollow space 406 of the spiral hanger unit 400. This step may be performed in the same manner as the above-mentioned step (3-1).

[0057] (Step (4-2): Towing Rope Insertion Step) Next, as shown in FIG. 13 , the worker P attaches one end of the towing rope 800 to one end of the lead wire 700 (for example, the end on the first utility pole 120 side) near the first utility pole 120. Then, as shown in FIG. 14 , near the second utility pole 140, the worker P pulls in the lead wire 700 until the end of the towing rope 800 on the second utility pole 140 side reaches the vicinity of the second utility pole 140. When the end of the towing rope 800 on the second utility pole 140 side reaches the vicinity of the second utility pole 140, the worker P detaches the lead wire 700 from the towing rope 800. This causes the towing rope 800 to be inserted into the hollow space 406 of the spiral hanger unit 400. The towing rope 800 is wound around an electric or manual reel 960 and stored therein, and the worker P performs work while pulling out the towing rope 800 as needed.

[0058] In step (4-2), one end of the towing rope 800 may be attached to one end of the lead wire 700 near the second utility pole 140. In this case, the towing rope 800 is pulled in from the vicinity of the first utility pole 120. After pulling in the new cable 360, the worker P simply removes the lead wire 700 from the end of the towing rope 800 near the first utility pole 120.

[0059] (Step (4-3): New Cable Installation Step) Then, as shown in FIG. 15 , the worker P attaches one end of the new cable 360 ​​to one end of the towing rope 800 (for example, the end on the first utility pole 120 side) near the first utility pole 120. Thereafter, as shown in FIG. 16 , the worker P retracts the towing rope 800 near the second utility pole 140 until the end of the towing rope 800 on the first utility pole side reaches the vicinity of the second utility pole 140. As a result, the new cable 360 ​​connected to the towing rope 800 is retracted into the hollow space 406 of the spiral hanger unit 400. The worker P may retract the towing rope using, for example, an electric or manual reel 960. When the end of the towing rope 800 on the first utility pole 120 side reaches the vicinity of the second utility pole 140, the worker P detaches the towing rope 800 from the new cable 360. In this way, a new cable 360 ​​can be installed between the utility poles.

[0060] In step (4-3), one end of the new cable 360 ​​may be attached to one end of the towing rope 800 near the second utility pole 140. In this case, the new cable 360 ​​can be pulled into the hollow space 406 of the spiral hanger unit 400 by pulling the towing rope 800 from near the first utility pole 120. After pulling the new cable 360, the worker P simply detaches the towing rope 800 from the end of the new cable 360 ​​near the first utility pole 120.

[0061] The above describes one example of a method for erecting a new cable (Installation Example 2). In Installation Example 2, the new cable 360 ​​is erected by using the tow rope 800 to pull it into the hollow space 406 of the spiral hanger unit 400 attached between the utility poles 120, 140. This makes it possible to easily erect the new cable 360 ​​even when the distance between the utility poles 120, 140 is long or the weight of the new cable 360 ​​is heavy.

[0062] In the above-described installation example 1 or installation example 2, in order to smoothly install the new cable 360 ​​in the hollow space 406 of the spiral hanger unit 400 in which the existing cable 300 has been organized, it is desirable that the existing cable 300 be accommodated loosely in the hollow space 406 of the spiral hanger unit 400. By limiting the amount of the existing cable 300 accommodated in the hollow space 406 of the spiral hanger unit 400 to a predetermined amount or less, the new cable 360 ​​can easily move within the hollow space 406 of the spiral hanger unit 400. For example, the sum of the cross-sectional area of ​​the existing cable 300 and the cross-sectional area of ​​the new cable 360 ​​accommodated in the hollow space 406 of the spiral hanger unit 400 may be set to 40% or less of the hollow area of ​​the spiral hanger unit 400. This allows the new cable 360 ​​to be installed easily.

[0063] [4. Summary] The cable management method according to the present disclosure has been described above. According to the cable management method according to the present disclosure, multiple cables 300 installed between utility poles 120, 140 are housed in the hollow space 406 of the spiral hanger unit 400 with unnecessary cables (unnecessary wires 340) removed. This allows the cables 300 between the utility poles to be organized so that only the cables in use (live wires 320) are left. As a result, it is possible to prevent the multiple cables 300 from becoming tangled or from hanging down to the ground, improving the appearance.

[0064] Furthermore, the connected spiral hanger units 400 only need to be fixed to the support wire 200 using the end clamps 500 near the first utility pole 120 and the second utility pole 140. Therefore, the installation work of the spiral hanger units 400 is also easy.

[0065] Furthermore, in the cable organization method according to the present disclosure, multiple cables 300 are organized using spiral hanger units 400 installed between utility poles. Therefore, when a new cable 360 ​​is subsequently installed between utility poles 120, 140, the installation work can be performed using shuttle runners 600 and lead wires 700. This allows the new cable 360 ​​to be installed easily.

[0066] Note that some or all of the above-described embodiments can be expressed by the following (1) to (6), but are not limited to the following descriptions.

[0067] (1) A method for organizing a plurality of cables strung between utility poles, comprising: a step of accommodating the plurality of cables together with a support wire strung between the utility poles in a hollow space of a first spiral hanger unit near a first utility pole; a step of installing the first spiral hanger unit, and then accommodating the plurality of cables and the support wire in the hollow space of a new spiral hanger unit from the first utility pole toward a second utility pole, and repeating the operation of connecting adjacent spiral hanger units; a step of accommodating the plurality of cables and the support wire in the hollow space of a second spiral hanger unit near the second utility pole; a step of fixing an end of the first spiral hanger unit and an end of the second spiral hanger unit to the support wire; and a step of pulling out unnecessary cables from one of the utility poles from the plurality of cables bundled by the plurality of spiral hanger units.

[0068] (2) A method for organizing a plurality of cables strung between utility poles, comprising the steps of: removing unnecessary cables from the plurality of cables; accommodating the plurality of cables together with support wires strung between the utility poles in a hollow space of a first spiral hanger unit near a first utility pole; installing the first spiral hanger unit, and then accommodating the plurality of cables and the support wires in the hollow space of a new spiral hanger unit from the first utility pole toward a second utility pole, and repeating the process of connecting adjacent spiral hanger units; accommodating the plurality of cables and the support wires in the hollow space of a second spiral hanger unit near the second utility pole; and fixing an end of the first spiral hanger unit and an end of the second spiral hanger unit to the support wires.

[0069] (3) The cable organizing method according to (1) or (2), wherein the cables excluding the unnecessary cables are accommodated loosely in the hollow spaces of the plurality of spiral hanger units.

[0070] (4) The cable organizing method according to (1) or (2), wherein the sum of the cross-sectional areas of the cables housed in the hollow space of the spiral hanger unit is 40% or less of the hollow area of ​​the spiral hanger unit.

[0071] (5) The cable organizing method according to any one of (1) to (4), comprising the steps of: feeding a shuttle runner from the first utility pole toward the second utility pole into the hollow spaces of the plurality of spiral hanger units with the shuttle runner connected to the tip connector of the lead wire; removing the shuttle runner that has reached the vicinity of the second utility pole from the tip connector of the lead wire; attaching one end of a new cable to the rear end connector of the lead wire in the vicinity of the first utility pole; pulling the lead wire in the vicinity of the second utility pole until the rear end connector of the lead wire reaches the vicinity of the second utility pole; and removing the rear end connector of the lead wire that has reached the vicinity of the second utility pole from the new cable that has been inserted into the hollow spaces of the plurality of spiral hanger units.

[0072] (6) A step of feeding the shuttle runner from the first utility pole toward the second utility pole into the hollow space of the plurality of spiral hanger units with the shuttle runner connected to the tip connector of the lead wire; a step of detaching the shuttle runner that has reached the vicinity of the second utility pole from the tip connector of the lead wire; a step of attaching one end of a towing rope to the rear end connector of the lead wire in the vicinity of the first utility pole; a step of retracting the lead wire in the vicinity of the second utility pole until the rear end connector of the lead wire reaches the vicinity of the second utility pole; a step of detaching the rear end connector of the lead wire that has reached the vicinity of the second utility pole from the towing rope; a step of attaching one end of the new cable to the rear end of the towing rope in the vicinity of the first utility pole; and a step of retracting the towing rope in the vicinity of the second utility pole until the rear end of the towing rope reaches the vicinity of the second utility pole. and removing the rear end of the towing rope that has reached the vicinity of the second utility pole from the new cable that has been inserted into the hollow spaces of the plurality of spiral hanger units.

[0073] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure.

[0074] P Worker 10 Aerial work platform 100 Utility pole 120 First utility pole 140 Second utility pole 200 Support wire 220 Fastener 300 Cable 320 Live wire 340 Unnecessary wire 360 ​​New cable 400 Spiral hanger unit 402 First end of spiral hanger unit 404 Second end of spiral hanger unit 406 Hollow space of spiral hanger unit 420 First spiral hanger unit 422 First end of first spiral hanger unit 424 Second end of first spiral hanger unit 440 Second spiral hanger unit 444 Second end of second spiral hanger unit 460 Intermediate spiral hanger unit 500 End clamp 520 First end clamp 540 Second end clamp 600 Shuttle runner 700 Lead wire 800 Towing rope 900 Cutting means 920 Dedicated reel 940 Cable drum 960 Electric or manual reel

Claims

1. A method for organizing a plurality of cables installed between utility poles, comprising: - a step of accommodating the plurality of cables together with a support wire installed between the utility poles in a hollow space of a first spiral hanger unit near a first utility pole; - after installing the first spiral hanger unit, repeating a step of accommodating the plurality of cables and the support wire in a hollow space of a new spiral hanger unit and connecting adjacent spiral hanger units together while moving from the first utility pole toward a second utility pole; - a step of accommodating the plurality of cables and the support wire in a hollow space of a second spiral hanger unit near the second utility pole; - a step of fixing an end portion on the first utility pole side of the first spiral hanger unit and an end portion on the second utility pole side of the second spiral hanger unit to the support wire; - a step of pulling out an unnecessary cable from one utility pole side from among the plurality of cables bundled by the plurality of spiral hanger units.

2. A method for organizing a plurality of cables installed between utility poles, comprising: - a step of removing an unnecessary cable from the plurality of cables; - a step of accommodating the plurality of cables together with a support wire installed between the utility poles in a hollow space of a first spiral hanger unit near a first utility pole; - after installing the first spiral hanger unit, repeating a step of accommodating the plurality of cables and the support wire in a hollow space of a new spiral hanger unit and connecting adjacent spiral hanger units together while moving from the first utility pole toward a second utility pole; - a step of accommodating the plurality of cables and the support wire in a hollow space of a second spiral hanger unit near the second utility pole; - a step of fixing an end portion of the first spiral hanger unit and an end portion of the second spiral hanger unit to the support wire.

3. The method for organizing cables according to claim 1 or 2, wherein the cables excluding the unnecessary cable are accommodated in a loose state in the hollow spaces of the plurality of spiral hanger units.

4. The method for organizing cables according to claim 1 or 2, wherein the sum of the cross - sectional areas of the cables accommodated in the hollow space of the spiral hanger unit is 40% or less of the hollow area of the spiral hanger unit.

5. With a shuttle runner connected to the tip of the lead wire, feeding the shuttle runner from the first utility pole toward the second utility pole through the hollow spaces of the plurality of spiral hanger units; removing the shuttle runner that has reached near the second utility pole from the tip of the lead wire; attaching one end of a new cable to the rear end of the lead wire near the first utility pole; pulling in the lead wire until the rear end of the lead wire reaches near the second utility pole near the second utility pole; and removing the rear end of the lead wire that has reached near the second utility pole from the new cable inserted through the hollow spaces of the plurality of spiral hanger units. The cable organizing method according to any one of claims 1 to 4, comprising:

6. With a shuttle runner connected to the tip of the lead wire, feeding the shuttle runner from the first utility pole toward the second utility pole through the hollow spaces of the plurality of spiral hanger units; removing the shuttle runner that has reached near the second utility pole from the tip of the lead wire; attaching one end of a towing rope to the rear end of the lead wire near the first utility pole; pulling in the lead wire until the rear end of the lead wire reaches near the second utility pole near the second utility pole; removing the rear end of the lead wire that has reached near the second utility pole from the towing rope; attaching one end of the new cable to the rear end of the towing rope near the first utility pole; pulling in the towing rope until the rear end of the towing rope reaches near the second utility pole near the second utility pole; and removing the rear end of the towing rope that has reached near the second utility pole from the new cable inserted through the hollow spaces of the plurality of spiral hanger units. The cable organizing method according to any one of claims 1 to 4, comprising:

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