Suspension wire support hardware and suspension wire support method

Abstract

This invention provides a suspension wire support hardware and suspension wire support method that reduce the burden on workers during the anchoring work of communication cables with suspension wires, while improving work efficiency. [Solution] The suspension wire support fitting 10 comprises a hook portion 11 supported by the anchoring portion of the support, a first grip portion 12 extending spirally from one end of the hook portion 11, and a second grip portion 13 extending spirally from the other end of the hook portion 11 and gripping the suspension wire 40 by wrapping around the first grip portion 12. A friction-increasing material is applied to the inner surfaces of the first grip portion 12 and the second grip portion 13, and the outer surfaces of the first grip portion 12 and the second grip portion 13 and the inner surfaces to which the friction-increasing material is applied are covered with a resin coating 14.

Description

Technical Field

[0001] The present disclosure relates to a wire support fitting and a wire support method.

Background Art

[0002] When laying a communication cable between utility poles, a communication cable with a suspension wire is used. In the vicinity of the utility pole, the cable and the suspension wire are separated, and the separated suspension wire is held by the utility pole, so that it is strung between the utility poles. Further, when holding the suspension wire by the utility pole, the suspension wire is supported by a winding grip.

[0003] Patent Document 1 discloses a winding grip that holds the support wire part (suspension wire) of the drop cable by winding it around the support wire part on the utility pole.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in Patent Document 1, since the winding grip is wound around the covering part of the suspension wire, the covering part of the suspension wire is damaged by the winding grip. In order to solve this problem, it is conceivable to directly wind the winding grip around the internal steel core by removing the covering of the suspension wire. However, since it takes labor and time to remove the covering, it has become a burden on the operator.

[0006] An object of the present disclosure is to provide a wire support fitting and a wire support method that improve work efficiency while reducing the burden on the operator in the operation of holding the suspension wire.

Means for Solving the Problems

[0007] To solve the above problems, a suspension wire support fitting according to one aspect of this disclosure is: A hooking part supported by the anchoring part of the support, A first grip portion extends spirally from one end of the aforementioned hook portion, A second grip portion extends spirally from the other end of the aforementioned hook portion and grips the suspension wire by wrapping around the first grip portion, Equipped with, A friction-increasing material is applied to the inner surfaces of the first grip portion and the second grip portion. The outer surfaces of the first grip portion and the second grip portion, and the inner surfaces to which the friction-enhancing material is applied, are covered with a resin coating. [Effects of the Invention]

[0008] According to this disclosure, it is possible to provide a suspension wire support fitting that reduces the burden on workers during suspension wire anchoring work while improving work efficiency. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing the cable suspension wires 30 and cables 40 that are suspended using the suspension wire support fitting 10 of this embodiment. [Figure 2] This diagram shows the configuration of the suspension wire support hardware 10 in this embodiment. [Figure 3] This is a detailed diagram showing the configuration of the suspension wire support hardware 10 of this embodiment. [Figure 4] This flowchart shows a suspension wire support method using the suspension wire support hardware 10 according to this embodiment. [Modes for carrying out the invention]

[0010] The embodiments of this disclosure will be described below with reference to the drawings. In all the drawings illustrating the embodiments, common components are denoted by the same reference numerals, and repeated explanations are omitted. The following embodiments are not intended to unduly limit the content of this disclosure as described in the claims. Not all components shown in the embodiments are necessarily essential components of this disclosure. Also, each drawing is a schematic diagram and is not necessarily a strict illustration.

[0011] Furthermore, in the following explanations, when describing similar elements without distinction, a reference code (or a common code among reference codes) may be used, and when describing similar elements with distinction, the element's identification number (or reference code) may be used.

[0012] <Overall Structure> The suspension wire support fitting according to this embodiment is a wrap-around grip for securing suspension wires that suspend communication cables and the like, which are installed between utility poles, near the utility poles. The surface of the grip portion of the suspension wire support fitting according to this embodiment is coated with a friction-increasing material and covered with a resin coating, thereby providing an anti-slip effect while reducing damage to the suspension wire coating.

[0013] The configuration of the suspension wire support fitting according to this embodiment will be described. Figure 1 is a schematic diagram showing the cable suspension wire 30 and cable 40 that are suspended using the suspension wire support fitting 10 of this embodiment. In this embodiment, an example using a cable with a suspension wire, in which the cable suspension wire 30 and cable 40 are connected by a sheath, will be described. In addition, in this embodiment, an example in which a utility pole is used as a support for the cable with a suspension wire will be described.

[0014] As shown in Figure 1, when the cable 40 is installed between utility poles, the cable suspension wire 30 is supported by a suspension wire support fitting 10 near the utility pole. The suspension wire support fitting 10 is attached to an intermediate utility pole along which the cable 40 is extended. Alternatively, the suspension wire support fitting 10 is attached to the utility pole at the starting and ending points along which the cable 40 is extended. The suspension wire support fitting 10 secures the cable suspension wire 30 to the utility pole using a tensioning method.

[0015] <Structure of the Suspension Wire Support Hardware 10> The structure of the suspension wire support hardware 10 according to this embodiment will be described. FIG. 2 is a diagram showing the structure of the suspension wire support hardware 10 of this embodiment. FIG. 3 is a detailed diagram showing the structure of the suspension wire support hardware 10 of this embodiment.

[0016] As shown in FIG. 2, the suspension wire support hardware 10 is a winding grip supported by the retention part of the pole band 20 attached to the pole. The retention part includes, for example, a round thimble supported by the pole band 20. The cable suspension wire 30 and the cable 40 are cables with a suspension wire that are joined between poles and integrated. The cable suspension wire 30 and the cable 40 are separated near the pole. The separated cable suspension wire 30 and cable 40 are each covered. The covering material includes, for example, polyvinyl chloride, polyethylene, or Teflon (registered trademark), etc. Inside the covering of the cable suspension wire 30, a galvanized steel wire is provided. The suspension wire support hardware 10 supports and retains the cable suspension wire 30 by winding around the covered cable suspension wire 30. The cable suspension wire 30 supports the cable 40 joined to the cable suspension wire 30 by being supported by the suspension wire support hardware 10.

[0017] As shown in FIG. 3, the suspension wire support hardware 10 includes a hook part 11, a first grip part 12, and a second grip part 13.

[0018] The hook part 11 has a U-shaped curved part. The hook part 11 is supported by hooking onto the retention part of the pole band 20. The hook part 11 is formed of galvanized steel wire. The hook part 11 is formed by adhering, twisting, and twisting together a plurality of helical galvanized steel wires. For this reason, the hook part 11 is formed by twisting together a plurality of galvanized steel wires into a single wire shape and a U shape, and is not a hollow spiral shape.

[0019] The first grip portion 12 extends from one end of the engaging portion 11 and is integrally connected to the engaging portion 11. The first grip portion 12 is formed by adhering a plurality of zinc-plated steel wires in a spiral shape. The first grip portion 12 is not twisted and extends in a spiral shape (hollow spiral shape) around the central axis. The spiral shape of the first grip portion 12 is preferably, for example, about 10 rotations. A friction increasing material is applied on the inner surface of the spiral shape of the first grip portion 12. The friction increasing material includes, for example, aluminum oxide. The surface of the first grip portion 12 is covered with a resin coating 14. That is, the resin coating 14 is formed on the inner surface (the inner surface on which the friction increasing material is applied) and the outer surface of the spiral shape of the first grip 12. The resin coating 14 includes, for example, a poly-based resin or a rubber-based resin. Examples of the poly-based resin include resins such as polypropylene, polyethylene, and polyvinyl chloride. Examples of the rubber-based resin include resins such as chloroprene-based and styrene-based rubbers.

[0020] The second grip portion 13 extends from the other end of the hook portion 11 and is connected integrally with the hook portion 11. That is, the second grip portion 13 is provided opposite the first grip portion 12 via the hook portion 11. The second grip portion 13 is formed by bonding together a plurality of spirally shaped galvanized steel wires. The second grip portion 13 is not twisted and extends in a spiral shape around a central axis. The second grip portion 13 is formed to be shorter than the first grip portion 12, and the spiral shape of the second grip portion 13 is formed to have about one fewer rotation than the spiral shape of the first grip portion 12. A friction-enhancing material is applied to the inner surface of the spiral shape of the second grip portion 13. The friction-enhancing material includes, for example, aluminum oxide. The surface of the second grip portion 13 is covered with a resin coating 14. Specifically, a resin coating 14 is formed on the inner surface of the spiral shape of the first grip 12 (the inner surface coated with a friction-increasing material) and on the outer surface of the spiral shape. The resin coating 14 includes, for example, a poly-based resin or a rubber-based resin. Examples of poly-based resins include polypropylene, polyethylene, and polyvinyl chloride. Examples of rubber-based resins include chloroprene-based and styrene-based rubber. The first grip portion 12 and the second grip portion 13 wrap around the cable suspension wire 30 alternately, thereby gripping the cable suspension wire 30.

[0021] <Hanging wire support method> A method for supporting a suspension wire using the suspension wire support fitting 10 according to this embodiment will be described. Figure 4 is a flowchart showing the method for supporting a suspension wire using the suspension wire support fitting 10 according to this embodiment.

[0022] As shown in Figure 4, first the suspension wire support fitting 10 is set (step S11). Specifically, the hook portion 11 of the suspension wire support fitting 10 is hooked onto the anchor portion of the utility pole band 20. As a result, the hook portion 11 is supported by the anchor portion, while the first grip portion 12 and the second grip portion 13 are released.

[0023] Next, the cable suspension wire is separated (step S12). Specifically, the cable with the suspension wire is extended between utility poles and separated into the cable suspension wire 30 and the cable 40 near the utility poles. In the cable with the suspension wire, the cable suspension wire 30 and the cable 40 are each insulated, and the insulations of the cable suspension wire 30 and the cable 40 are joined together as a single unit. The worker separates them by cutting the insulation between the cable suspension wire 30 and the cable 40, for example, using an electrician's knife. The separated cable suspension wire 30 remains in its insulated state.

[0024] Next, the cable suspension wire is supported (step S13). Specifically, the separated and covered cable suspension wire 30 is supported by the suspension wire support fitting 10. At this time, the first wrap-around grip portion 12 of the suspension wire support fitting 10 is wrapped around the cable suspension wire 30 while adjusting the slack so that there is no slack in the cable suspension wire 30. The first wrap-around grip portion 12 is wrapped around the cable suspension wire 30 so that the cable suspension wire 30 is positioned on its central axis. After that, the second wrap-around grip portion 13 is wrapped around the cable suspension wire 30 so that it is alternating with the first wrap-around grip portion 12. The second wrap-around grip portion 13 is wrapped around the cable suspension wire 30 in the same way as the first wrap-around grip portion 12 so that the cable suspension wire 30 is positioned on its central axis. As a result, the covered cable suspension wire 30 is gripped and supported by the first grip portion 12 and the second grip portion 13.

[0025] <Summary> As described above, the suspension wire support fitting 10 according to this embodiment includes a hook portion 11 supported by the anchoring portion of the support, a first grip portion 12 extending spirally from one end of the hook portion, and a second grip portion 13 extending spirally from the other end of the hook portion 11 and gripping the cable suspension wire 30 by wrapping around the first grip portion 12. A friction-enhancing material is applied to the inner surfaces of the first grip portion 12 and the second grip portion 13, and the outer surfaces of the first grip portion 12 and the second grip portion 13, as well as the inner surfaces to which the friction-enhancing material is applied, are covered with a resin coating 14. As a result, the friction-enhancing material is applied to the spiral inner surface to provide an anti-slip function, while the resin coating prevents damage to the suspension wire coating. Therefore, work to increase the frictional force, such as stripping the coating from the cable suspension wire 30 and directly wrapping the grip around the internal steel core, becomes unnecessary. Therefore, it is possible to reduce the burden on workers during the cable suspension wire anchoring work while improving work efficiency.

[0026] Furthermore, in the suspension wire support fitting 10 according to this embodiment, the resin coating 14 includes a poly resin or a rubber resin, and the first grip portion 12 and the second grip portion 13 include galvanized steel wire. By applying a poly resin coating to the galvanized steel wire, the first grip portion 12 and the second grip portion 13 can have sufficient durability without damaging the covering of the cable suspension wire 30.

[0027] Furthermore, in the suspension wire support fitting 10 according to this embodiment, a friction-increasing material is applied between the surfaces of the first grip portion 12 and the second grip portion 13 and the resin coating 14. This further increases the frictional force between the first grip portion 12 and the second grip portion 13 and the cable suspension wire 30.

[0028] <Variation> In the above embodiment, the spiral shape of the first grip portion 12 is approximately 10 rotations, and the spiral shape of the second grip portion 13 is formed with approximately 1 rotation less than the number of rotations of the spiral shape of the first grip portion 12. However, the present invention is not limited thereto. The first grip portion 12 and the second grip portion 13 only need to have enough gripping force to hold the cable suspension wire 30 without slack. The spiral shape of the first grip portion 12 may be formed with 10 rotations or less, and the spiral shape of the second grip portion 13 may be formed with 2 or more rotations less than the number of rotations of the spiral shape of the first grip portion 12.

[0029] In the above embodiment, a utility pole was used as the support for the cable with suspension wires, but the present invention is not limited thereto. Any facility on which various cables are installed can be used as the support, such as a steel tower or a building.

[0030] In the above embodiment, the suspension wire support fitting 10 was made of galvanized steel wire, but the present invention is not limited thereto. The suspension wire support fitting 10 only needs to have sufficient strength and durability to anchor the cable suspension wire 30, and may be made of zinc-aluminum alloy plated steel wire or the like.

[0031] In the above embodiment, the sheathing of the cable suspension wire 30 and the cable 40 are joined together as a single unit in the cable with suspension wire, but the present invention is not limited thereto. The cable suspension wire 30 and the cable 40 may be joined together, for example, by wrapping binding wire or insulating tape around them.

[0032] In the above embodiment, the suspension wire support fitting 10 was described as a method for securing the cable suspension wire 30 of a cable with a suspension wire for a communication cable, but the present invention is not limited thereto. The suspension wire support fitting 10 may also be used to secure suspension wires of power distribution lines, etc.

[0033] While several embodiments of this disclosure have been described above, these embodiments can be implemented in a variety of other forms, and various omissions, substitutions, and modifications are permitted without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents.

[0034] (Note) The details described in each of the above embodiments are noted below.

[0035] (Note 1) A hooking part supported by the anchoring part of the support, A first grip portion extends spirally from one end of the aforementioned hook portion, A second grip portion extends spirally from the other end of the aforementioned hook portion and grips the suspension wire by wrapping around the first grip portion, Equipped with, A friction-increasing material is applied to the inner surfaces of the first grip portion and the second grip portion. The outer surfaces of the first grip portion and the second grip portion, and the inner surfaces to which the friction-increasing material is applied, are covered with a resin coating. Suspension wire support hardware.

[0036] (Note 2) The aforementioned resin coating includes a poly resin or a rubber resin. (Note 1) Suspension wire support hardware.

[0037] (Note 3) The first grip portion and the second grip portion include galvanized steel wire. Suspension wire support hardware as described in (Note 1).

[0038] (Note 4) The first grip portion and the second grip portion grip the covered suspension wire. Suspension wire support hardware as described in (Note 1).

[0039] (Note 5) A hook that can be fixed to the anchoring part of the support, A first grip portion extends spirally from one end of the aforementioned hook portion, A second grip portion extends spirally from the other end of the aforementioned hook portion and grips the suspension wire by wrapping around the first grip portion, Equipped with, A friction-increasing material is applied to the inner surfaces of the first grip portion and the second grip portion. The outer surfaces of the first grip portion and the second grip portion, and the inner surfaces to which the friction-increasing material is applied, are covered with a resin coating. A method of supporting suspension wires using suspension wire support hardware, The steps include fixing the aforementioned hook portion to the anchoring portion of the support, The steps include wrapping the first grip portion and the second grip portion around the covered suspension wire to grip the covered suspension wire, A suspension wire support method including the above. [Explanation of Symbols]

[0040] 10. Suspension wire support hardware 11. Hook part 12. First grip section 13. Second grip section 14. Resin coating 20.. Utility pole band 30... Cable suspension wires 40... Cable

Claims

1. A hooking part supported by the anchoring part of the support, A first grip portion extends spirally from one end of the aforementioned hook portion, A second grip portion extends spirally from the other end of the aforementioned hook portion and grips the suspension wire by wrapping around the first grip portion, Equipped with, A friction-increasing material is applied to the inner surfaces of the first grip portion and the second grip portion. The outer surfaces of the first grip portion and the second grip portion, and the inner surfaces to which the friction-enhancing material is applied, are covered with a resin coating. Suspension wire support hardware.

2. The aforementioned resin coating includes a poly resin or a rubber resin. A suspension wire support fitting according to claim 1.

3. The first grip portion and the second grip portion include galvanized steel wire. The suspension wire support fitting according to claim 1.

4. The first grip portion and the second grip portion grip the covered suspension wire. The suspension wire support fitting according to claim 1.

5. A hook that can be fixed to the anchoring part of the support, A first grip portion extends spirally from one end of the aforementioned hook portion, A second grip portion extends spirally from the other end of the aforementioned hook portion and grips the suspension wire by wrapping around the first grip portion, Equipped with, A friction-increasing material is applied to the inner surfaces of the first grip portion and the second grip portion. The outer surfaces of the first grip portion and the second grip portion, and the inner surfaces to which the friction-enhancing material is applied, are covered with a resin coating. A method of supporting suspension wires using suspension wire support hardware, The steps include fixing the aforementioned hook portion to the anchoring portion of the support, The steps include wrapping the first grip portion and the second grip portion around the covered suspension wire to grip the covered suspension wire, A suspension wire support method including the above.

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