JPH01321804A - Post passing method and post passing section for aerial cable inspector - Google Patents

Abstract

PURPOSE:To perform inspection efficiently by arranging bypass for detouring an inspector around or above the top of a post thereby passing the inspector for an aerial cable traveling on the aerial cable through the post. CONSTITUTION:A bypass member 5 is coupled through a coupling section 7 to the terminal of an aerial cable 2 fixed through an anchor clamp 3 to the top 4 of a post 1. The bypass member 5 is secured through a supporting member 6 to the upper section of the post 1. A bypass member 45 is supported horizontally by means of a supporting member 46 and the top section 4 of the post 1. An inspector 8 travels through a drive roll 10 fixed to a frame body 9 and a stop roll 11 while holding the cable 2 and detours around the bypass section 5(45) to move to next span. A camera 13 mounted on the inspector 8 photographs the surface of the cable 2 and transmits the photography to a ground base. By such arrangement, inspection can be carried out safely with high efficiency.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] This invention is for inspecting and observing the surface condition, presence or absence of wire breakage, etc. by running on overhead cables such as overhead ground wires and overhead insulated wires. The present invention relates to a strut passage method and a structure of a strut passage section of an overhead cable inspection device.

[Prior Art] Traditionally, overhead cables, especially overhead ground wires, have suffered from lightning strikes, vibration fatigue,
They are susceptible to damage due to chemical corrosion, etc., and frequent inspections are conducted to quickly detect damage before it leads to a breakage accident. Previously, for this inspection, the aerial vehicle was suspended from the overhead ground wire and the worker carried out the work while riding in the air.However, in order to eliminate such dangerous work, recently the aerial vehicle was suspended from the overhead ground wire and the worker carried out the work. An overhead cable inspection device has been developed.

[Problems to be Solved by the Invention] The above-mentioned inspection device is attached to an overhead cable and runs on it. Since it is not possible to pass directly through cable support parts such as insulator binding parts, the inspection equipment must be manually moved around the tower or telephone pole and transferred to the overhead cable in the adjacent span, which is a hassle.

[Means for Solving the Problems] The present invention allows an inspection device running on an overhead cable to continuously pass through the supporting portion of a support such as a steel tower or utility pole and move onto the overhead cable in the next span. For this purpose, the first aspect of the present invention is to connect bypass members to the overhead cable portions on both sides of the column support section so that the inspection device can run around the column support section. The second aspect of the present invention is to move the inspection device from the overhead cable in one span to the overhead cable in the other span by passing the bypass member.
A third aspect of the present invention is to cause the inspection device to travel past the column support portion in a detour manner, and a third aspect of the present invention is to cause the inspection device to run past the column support portion in a detour manner. The purpose is to allow the vehicle to pass in a detour.

The fourth to sixth inventions are the first to third inventions.
The present invention resides in the structure of a column passage section to enable implementation of the method of the second invention.

[Operation] In this invention, since the overhead cable parts on both sides of the column support section are connected by the bypass member that bypasses the column support section, an inspection device that has traveled on the overhead cable in one span can reach the column support section. The cable passes over the bypass member near the support column without touching the support column, and continues to move onto the overhead cable in the other span.

[Example] Next, an example of the present invention will be described. First, the first aspect of the present invention will be explained with reference to FIG. FIG. 1(a) shows an example of a retaining part of an overhead ground wire, in which 1 is a steel tower, 2 is an overhead ground wire, 3 is a retaining clamp for securing and supporting the overhead ground wire 2 to the top of the tower 4, and 5 is a retaining clamp. A bypass member connected across the overhead ground wire 2.2 of an adjacent span, and in this example, a bypass path that detours around the upper part of the tower top 4 is formed by the bypass support member 6 erected at the tower top 4. are doing. 7 is a connecting portion between the bypass member 6 and the overhead ground wire 2;
is an inspection device attached to the overhead ground wire 2. This diagram (
In b), the inspection device 8 is moved to the left while inspecting the surface condition of the overhead ground wire from the right span. When reaching the first connecting portion 7, the inspection device 8 transfers from the overhead ground wire 2 to the bypass member 5. Furthermore, the bypass member 5
It travels over the top to the left, during which it climbs over the retaining clamp 3 and the tower top 4 to reach the second connection 7, and from there it is transferred to the overhead ground wire 2 in the left span. Complete the method. An enlarged side view of the connecting portion 7 between the overhead ground wire 2 and the bypass member 5 is shown in FIG. As shown in the drawings, it is desirable that this connecting portion 7 has a structure that allows the inspection device 8 to smoothly transfer from the overhead ground wire 2 to the bypass member 5. To achieve this, the tip of the bypass member 5 should be tapered. Then, they are connected by wrapping with tape, crimping with a branched sleeve, etc. Note that the bypass member 5 may be made of either a metal conductive material or an insulating material.

Figure (c) shows a simplified front view of the inspection device. The inspection device 8 in FIG. Rollers 11 are holding rollers facing this, and the overhead ground wire 2 is sandwiched between these rollers 10 and +1. The holding roller 11 is rotatable about a pivot 12 so that it can take a horizontal position sandwiching the overhead ground wire 2 and a vertical position so as to pass through the connecting portion 7 of the bypass member 5 without any trouble.

13 is an inspection camera placed on the frame 9.

In FIG. 1(A), when the inspection device 8 travels from the right side and reaches the connecting portion 7 of the bypass member 5, the holding roller 11 moves to the vertical position shown in FIG.
As it separates from the lower surface, the drive roller II rides on the bypass member 5, the inspection device 8 runs slightly on the bypass member 5, and when the presser roller II no longer interferes with the overhead ground wire 2, it is again The pressing roller 11 moves to the horizontal position and the bypass member 5 is again sandwiched between the two rollers 1O111.

Next, a second embodiment of the present invention will be described with reference to FIGS. 2 and 3. Although FIG. 1(A) also shows an embodiment of the second invention, FIGS. 2 and 3 are different embodiments. In FIG. 2, the overhead ground wire 2 is connected to the tower top 4. Figure 3 shows the overhead ground wire 2 being suspended and supported by a free center type suspension clamp 33 at the top 4 of the steel tower, both of which are attached to the left and right sides of the tower l. The bypass member 5 connected to the overhead ground wire 2 at the connecting part 7 is suspended by a bypass support member 6 erected at the top 4 of the steel tower with a suspension clamp 23.33.
The inspection device 8, which is supported on the upper part of the tower 1 and runs attached to the overhead ground wire 2 on the right side of the tower 1, passes through the bypass member 5, climbs over the upper part of the suspension support part, and runs on the overhead ground wire 2 on the left side of the tower 1. Move to ground line 2.

FIG. 4 shows an embodiment of the third aspect of the present invention, and FIG. 4A is a plan view of the overhead ground wire 2 secured to and supported on the tower top 4 by a restraining clamp 3. Reference numeral 45 denotes a bypass member, which is connected to the overhead ground wires 2 on the left and right sides of the tower at a connecting part 7, and extends to the side of the tower top 2 supporting the overhead ground wire 2, and is located approximately at the center of the tower. , and is supported by a bypass support member 46 provided on the tower top 2 so as to extend laterally. An enlarged plan view and side view of the connecting portion 7 between the bypass member 45 and the overhead ground wire 2 are shown in FIGS. 4(B) and 4(C). As is clear from the drawing, the bypass member 45 first extends upwardly in the vicinity of the connecting portion 7! and a side projecting portion 4Sb projecting laterally. It is preferable that the bypass member 45 is made up of the side projecting part 45b and the upper extension part ISa, and by doing so, it can be attached to the overhead ground wire 2 on the right side of the tower and can be extended to the left. When the traveling inspection device 8 passes through the connecting portion 7 and moves to the bypass member 45, the driving roller lO
It is possible to avoid the inconvenience caused to both the bypass member 45 and the bypass member 45 at the same time.

The fourth, fifth, and sixth inventions have been explained in the description of the first, second, and third inventions, respectively, so further explanation will be omitted.

[Effects of the Invention] As explained above, according to the present invention, the overhead cables on both sides of the column are connected by the bypass member that bypasses the column support part, so the overhead cable inspection device connects the overhead cables from the overhead cable to the bypass member. It is possible to move over the above-mentioned column support section by passing through it, and then transfer to the overhead cable in the adjacent span, thereby eliminating the complicated relocation work (line This makes it easier to inspect overhead cables.

[Brief explanation of the drawing]

1(A), FIG. 2, and FIG. 3 are side views showing various embodiments of the strut passage section of the present invention, FIG. 4(A) is a plan view showing another embodiment structure, Figure 1 (B) is a partially enlarged side view of the connecting portion 7 in Figure 1 (A), Figure 1 (C) is a front view of the inspection device 8 in Figure 1 (A), and Figure 4 (B). 4(c) are a partially enlarged plan view and side view of the connecting portion 7 in FIG. 4(a). 1: Post (steel tower), 2: Overhead cable (overhead ground wire), 3
: Retaining clamp, 4: Top of column (steel tower), 5: Bypass member, 6: Bypass support material, 7: Connection part, 8: Overhead cable inspection device, 9: Frame of inspection device, lO: Drive roller, 11 : Holder roller, 12: Pivot, 13: Inspection camera, 23: Fixed suspension clamp, 33: Free center suspension clamp, 45: Bypass member, 45a: Upper extension, 45b = Lateral extension, 46: Bypass Support material.

Claims (6)

[Claims] (1) In a method of inspecting the surface condition of an overhead cable by running an inspection device attached to the overhead cable, the inspection device is attached to the overhead cable portions on both sides of the column support, and the inspection device leaves the overhead cable and inspects the surface condition of the overhead cable. A bypass member that can run bypassing the above is connected, and when the inspection device passes through the support column, it runs from above the overhead cable, passes over the bypass member, and is transferred onto the overhead cable of an adjacent span. A method for passing through a support for an overhead cable inspection device, characterized in that: (2) In a method of inspecting the surface condition of an overhead cable by running an inspection device on the overhead cable, the inspection device is attached to the overhead cable portions on both sides of the column support portion, leaving the overhead cable to the column support portion. A bypass member that can run on the upper part of the overhead cable is connected, and when the inspection device passes through the column support part, it runs over the bypass member from above the overhead cable and is transferred onto the overhead cable of an adjacent span. Features: How to pass through a support column for an overhead cable inspection device. (3) In a method of inspecting the surface condition of an overhead cable by running an inspection device attached to the overhead cable, the inspection device is placed on the overhead cable portion on both sides of the column support section, away from the overhead cable. A bypass member that can run on the side of the overhead cable is connected, and when the inspection device passes through the column support part, the inspection device runs from above the overhead cable, passes over the bypass member, and is transferred onto the overhead cable of an adjacent span. A method for passing through a support for an overhead cable inspection device, characterized by: (4) An inspection device that runs along the overhead cable connects the overhead cable sections on both sides of the column support section by a bypass member that leaves the overhead cable and runs around the column support section. A strut passage section of an overhead cable inspection device characterized by: (5) An inspection device running on the overhead cable connects the overhead cable sections on both sides of the column support section by a bypass member that leaves the overhead cable and runs around the upper part of the column support section. A strut passage section of an overhead cable inspection device characterized by: (6) An inspection device running on the overhead cable connects the overhead cable sections on both sides of the column support section by a bypass member that leaves the overhead cable and runs around the side of the column support section. A strut passage section of an overhead cable inspection device characterized by: