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JP-2026075203-A - Cable support unit

JP2026075203AJP 2026075203 AJP2026075203 AJP 2026075203AJP-2026075203-A

Abstract

[Problem] To provide a cable support unit that can suppress the sagging of cables stretched between transmission towers. [Solution] A cable support unit 1 used to stretch a cable 92 between towers comprises a plurality of support bodies 2 attached to a support spanned between towers, and a continuous extension portion 4 connecting adjacent cable insertion portions in the extension direction of the support, wherein each support body comprises a support attachment portion 21 attached to the support, and a cable insertion portion 3 supported by the support attachment portion, the cable insertion portion forms an insertion space through which a cable can be inserted, and the continuous extension portion extends continuously between adjacent cable insertion portions in the extension direction of the support, supporting the cable from below between the cable insertion portions. [Selected Figure] Figure 1

Inventors

  • 西村 青空
  • 加藤 宏樹

Assignees

  • 中国電力株式会社

Dates

Publication Date
20260508
Application Date
20241022

Claims (4)

  1. A cable support unit used to stretch a cable between transmission towers, It comprises a plurality of support bodies attached to a support spanned between the aforementioned towers, and continuous extension portions that connect adjacent cable insertion portions in the extension direction of the support, The support body comprises a support attachment portion that is attached to the support body, and a cable insertion portion that is supported by the support attachment portion. The cable insertion portion forms an insertion space through which the cable can be inserted. The continuous extension portion extends continuously between adjacent cable insertion portions in the extension direction of the support, and supports the cable from below between the cable insertion portions, forming a cable support unit.
  2. The continuous extension portion is configured to be expandable and contractible in the extension direction of the support, as described in claim 1.
  3. The continuous extension portion is a tubular body through which a cable can be inserted, as described in claim 1.
  4. The continuous extension portion and the cable insertion portion have a support opening that extends along the extension direction of the support, The cable support unit according to claim 3, wherein the support opening is openable and closable.

Description

This invention relates to a cable support unit used to support cables when they are stretched between transmission towers. Conventionally, a method for replacing overhead ground wires as a cable between transmission towers is known, as described in Patent Document 1. In this method, a tension rope is stretched between the towers along the existing ground wire, and multiple suspension pulleys and loop bodies are attached to the tension rope at intervals in the direction of its extension so that the existing ground wire can be inserted through it. Then, the existing ground wire is pulled out from the suspension pulleys and loop bodies, and the new ground wire is inserted through the suspension pulleys and loop bodies, connecting the new ground wire to both towers. Finally, the tension rope, suspension pulleys, and loop bodies are removed, thereby completing the installation of the new ground wire between the towers. Japanese Unexamined Patent Publication No. 60-118006 This figure shows an overview of a cable support unit according to one embodiment of the present invention.This is a front view showing the support body of the cable support unit.This is a front view showing the support body of the cable support unit.This is a side view showing the cable support unit.This figure shows the (1) towing rope installation process using the rope support unit.This figure shows the (2) cable support unit installation process using the cable support unit.This figure shows the (3) tension relaxation process using the same cable support unit.This figure shows the (4) cable installation process using the cable support unit.This figure shows the (5) tensioning process using the cable support unit.This diagram shows the (6) removal process of the cable support unit in the cable support unit. A cable support unit 1 according to one embodiment of the present invention will be described with reference to Figures 1 to 10. For the sake of explanation, the vertical and horizontal directions will be described using the directions shown in Figure 1 as the reference, and the direction that penetrates the plane of Figure 1 will be described as the front-to-back direction. The cable support unit 1 is a device used to stretch a new cable 92 between transmission towers T. In this embodiment, it is used to replace an existing power line 91 already stretched between transmission towers T with a new power line. Furthermore, the cable support unit 1 in this embodiment is attached to the existing power line 91 stretched between transmission towers T and a support 93 extending along the existing power line 91. The support 93 is a rope stretched between transmission towers T, specifically a metal wire. As shown in Figure 1, the rope support unit 1 comprises a plurality of support bodies 2 attached to a support 93, a continuous extension 4 extending continuously between adjacent support bodies 2, and a towing rope 11. In this embodiment, the overall length of the rope support unit 1 in the left-right direction is longer than the distance between the towers T. The support body 2 comprises a support attachment portion 21 that engages with and attaches to the support 93, a cable insertion portion 3 through which the cable 92 is inserted, and a connecting rope 22. In this embodiment, the support body 2 has multiple cable insertion portions 3; specifically, multiple cable insertion portions 3 are arranged in series in the vertical direction for each support attachment portion 21. Furthermore, the connecting rope 22 connects adjacent support attachment portions 21 and cable insertion portions 3, or between cable insertion portions 3 themselves. The connecting rope 22 is a rope that can be bent in the extension direction. Thus, in the support body 2, the support attachment portion 21 and the cable insertion portions 3 are connected vertically by the connecting rope 22, so the cable insertion portions 3 are supported suspended from the support attachment portion 21 via the connecting rope 22. The support mounting portion 21 is detachable from the support 93 and, when attached to the support 93, is movable along the extension direction of the support 93. Specifically, the support mounting portion 21 comprises a roller (not shown) that rolls in contact with the support 93, and a support-side connecting portion 23 that extends downward from the roller and to which the connecting rope 22 is connected. A closed ring is formed by the roller and the support-side connecting portion 23. The roller is connected to the support-side connecting portion 23 so as to be rotatable around an axis extending in the front-rear direction. In such a support mounting portion 21, the support 93 is inserted inside the ring formed by the roller and the support-side connecting portion 23, and the roller rolls in contact with the support 93 from above, allowing the support mounting portion 21 to move along the extension direction of the support 93. As shown in Figures 2 and 3, the r