JPH0445114Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a dangerous zone display device for a high-voltage power transmission tower, which is installed at a predetermined location on a high-voltage power transmission tower in order to display the dangerous zone of the tower. In more detail, the dangerous areas of high-voltage power transmission towers are displayed, and it is possible to exclude entry into the areas so that workers, etc. are aware that they are dangerous areas. This invention relates to a dangerous zone display device for high-voltage transmission line towers.

[Prior Art] Conventionally, a dangerous zone display device for a high-voltage power transmission tower, which is installed at a predetermined location on a high-voltage power transmission tower to indicate a dangerous zone, has been a danger display on the surface of a metal cylinder. A device is known that has a display device consisting of a zone display rod of a certain length with a color applied to it, and a mounting device for fixing the display device to a dangerous zone portion of a steel tower (Utility Model Opening in 1983). (See No. 63694).

In other words, a display device consisting of a display rod, in other words, a bar-shaped sign is attached and fixed to a steel tower with a mounting device, and workers who climb the tower and work are placed near power transmission lines (dangerous areas). ) is designed to allow the user to recognize the proximity of the vehicle using both visual and tactile senses.

According to the dangerous zone display device, it is possible to alert the worker to the dangerous zone using the two senses of sight and touch, and has the advantage of preventing electric shock accidents caused by workers approaching or touching high-voltage power lines. are doing. It also has the advantage that there is no risk of it being blown away and rendering it useless like a danger flag.

In addition, instead of being used for high-voltage power transmission towers, a structure in which a mesh plate is provided as a safety device on utility poles to prevent people from coming close to the overhead wires of the utility poles (see Utility Model Publication No. 56-33060 and Publication No. 54-37978) ) has been proposed.

This configuration also has the same advantages as the display device.

[Problem that the invention attempts to solve]

However, the above-mentioned conventional danger zone display device has the following problems.

There remains a risk of dropping the hazardous area display device when installing or removing it.

It cannot accommodate various arrangement intervals.

The present invention was devised in response to the above-mentioned points, and its purpose is to eliminate the danger of dropping the danger zone display device when installing or removing it, and to solve various problems. An object of the present invention is to provide a dangerous zone display device for a high-voltage power transmission line tower that can correspond to the arrangement spacing.

[Means for solving problems]

And, as a means to achieve the above purpose, a dangerous zone display device on a high-voltage power transmission line tower is:
In a dangerous zone display device for a high-voltage power transmission line tower, which is installed at a predetermined location on the tower to indicate the dangerous zone of the high-voltage power transmission tower, the display device is made of polypropylene with a connecting portion at the end or in the middle. The indicator comprises a ladder-like member made of a lightweight member such as a steel pipe, and a mounting tool for removably attaching the indicator to the steel tower, and the indicator is connected to the tower through the connecting part. You can connect multiple display devices by
Further, the mounting device has a holding portion for fixedly holding the display device, a fall prevention rope, and a mounting portion that is detachably attached to the steel tower and holds the fall prevention rope. Consists of composition.

[Effect]

The dangerous zone display device for high-voltage power transmission line towers of the present invention based on the above configuration usually displays an indicator according to the position of the dangerous zone (live part) before working on the high-voltage power transmission tower. Multiple pieces can be connected via the connecting part, and these can be attached and detached to predetermined locations on the steel tower using a mounting tool. Also, it is equipped with a fall prevention rope and can be easily attached, making it easy to attach and remove. Not only time,
This works to eliminate the possibility that the display device or the like may fall during painting or other work.

〔Example〕

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings.

Here, Figs. 1 to 9 show one embodiment of the present invention, Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a plan view disassembled into a display device and a mounting device, and Fig. FIG. 4 is a plan view showing a state in which two display devices are connected, and FIGS. 5 to 9 are schematic explanatory views showing a state in which they are attached.

Roughly speaking, the dangerous zone display device for a high-voltage transmission line tower according to the present embodiment includes a ladder-shaped display device 1 and a mounting tool 3 for detachably mounting the display device 1 on a steel tower 2.

The display device 1 has frame members 4 and 5 made of two left and right polypropylene pipes, and connecting members 6 and 7 made of two polypropylene pipes that connect the left and right frame members 4 and 5. 4, 5 and connecting members 6, 7 form a ladder-like member, and connecting parts 9, 9 made of joints are provided at both ends 8, 8 of each of the frame members 4, 5. ing. Here, the connecting portion is made of vinyl chloride. Furthermore, polypropylene pipe was used as the material for the display device 1 in consideration of its light weight, voltage resistance (50 to 60 KV/mm), weather resistance, etc. However, materials made of other materials may also be used.

The mounting tool 3 includes a holding part 10 for fixedly holding the display tool 1, a fall prevention rope 11, and a temple mounting part 12 that is detachably attached to the steel tower 2 and holds the fall prevention rope 11. The structure has the following features. The holding part 10 includes a holding fitting 13, a holding fitting 15 having a recess 14 for holding the frame members 4 and 5 of the display 1, and both fittings 13 and 14.
The structure includes a tightening tool 16 consisting of a bolt and a nut for fixing the display device 1 between the two. The fall prevention rope 11 is a rope to prevent the display device 1 from falling, and is a rope that is connected to the rising part 17 of the holding fitting 13 and the fastening tool 19 (here, bolts, nuts, etc. are used). It is attached to the fall prevention rope holding part 18 of the attachment part 12 which is rotatably or slidably attached. The attachment part 12 has a fall prevention rope holding part 18 and an attachment part main body 19, and can be freely attached to and detached from the steel tower 2 using a vise-like bolt with a tightening rubber plate at the tip and a tightening nut. It is configured to be wearable and can be scanned by a separate handle.

Next, a description will be given of how the hazardous zone display device of the high-voltage power transmission line pylon of this embodiment is mounted on the pylon 2 (how to use the device) based on the above configuration.

The dangerous zone display device for a high-voltage power transmission line tower according to this embodiment includes the above-mentioned display device 1 and attachment device 3 as a first
The assembly as shown in the figure is attached to the steel tower 2, so that there is no risk of workers or the like accidentally entering the dangerous area.

First, the installation procedure will be explained.

- Attaching procedure - After attaching the fall prevention rope 11 to the fall prevention rope holding part 18 of the attachment part 12, the attachment part 1
2 is attached to a predetermined location on the steel tower 2 using a separate (included) handle using bolts and tightening nuts.

- Attaching procedure - After wrapping the fall prevention rope 11 around the frame material 4 or 5 of the display device 1, attach the other end of the rope 11 to the fall prevention rope holder 18 to prevent the display device 1 from falling. Try to prevent it.

- Attaching procedure - Attach the frame members 4 and 5 of the display device 1 to the holding part 10 of the attachment device 3.
The holding fitting 13 forming the holding fitting 13 and the holding fitting 15 are used to attach the holding fitting 13 to the concave portion 14 of the holding fitting 15, and to clamp and tighten the holding fitting 15. Then, the attachment part 12 and the holding fitting 13 of the holding part 10 are rotated or slid through the coupling tool 19 via the fall prevention rope holding part 18 that is integrally fixed to the attachment part 12, The mounting position of the display device 1, in other words, is adjusted so that it is in a vertical state or a horizontal state.

- Mounting procedure - After integrating the display tool 1 and the mounting tool 3, the mounting tool 3 is firmly fastened to the steel tower 2. Then, the other end of the fall prevention rope 11 is connected to the fall prevention rope holding part 1.
Removed from 8, indicator 1, steel tower (steel tower angle) 2
Connect the display device 1, the steel tower 2, and the mounting device 3 by wrapping it around the steel tower 2, so that the display device 1 and the mounting device 3
Make sure you don't fall.

Specifically, the danger zone display device of this embodiment is mounted on a high-voltage transmission line tower in the state shown in Figures 5 to 9. This will be briefly described.

Fig. 5 shows the state in which it is used for steel tower painting work etc. due to one line outage. The configuration is such that they are arranged vertically on the outside). Note that the display device 1 used includes two (or a plurality of display devices may be connected) connected by a connecting portion.

Figure 6 shows a state in which it is used for painting work on a steel tower due to one circuit being stopped, similar to Figure 5, and a plurality of indicators 1 are connected to the center of the tower 2 so that painting can be done up to the center of the tower. In addition, the indicator 1 is installed horizontally on the lower side (2 to 3 m above the ground) in three directions (on the left and right sides of the tower, in other words, on the inside and outside). . According to this configuration, the indicator forms a protective fence, and has the advantage that entry into the charging side can be reliably excluded.

Figure 7 shows the state in which it is used for steel tower painting work, etc. while charging two circuits, and it is the same as Figure 5 so that intrusion into the live parts side can be excluded (approximately 30 to 40 cm from the base of the arm). It was installed. In the case of this configuration, since the short stop period is effectively utilized, there is an advantage that more work can be performed during charging, and work can be performed with peace of mind even during dual-line charging.

Figure 8 shows the state used in tower painting work etc. during double line charging, similar to Figure 7.
It has a configuration in which indicators are mounted horizontally on the inside and outside of each of the tower angles at the lower position of the steel tower 2 (approximately 2 to 3 m below the arm). According to this configuration, there is an advantage that it is not possible to climb to the top of the steel tower more than necessary (it can be said to be a non-climb usage method).

FIG. 9 shows a state used when inspecting the end of an arm due to a one-line stoppage, and consists of a configuration in which an indicator 1 is attached to the outside of the center of each arm horizontal member and arm hanging member of a steel tower.

It should be noted that the present invention is not limited to the embodiments described above, and may be modified without changing the gist of the present invention.

[Effect of idea]

As is clear from the above description, according to the dangerous zone display device for high-voltage power transmission line towers of the present invention,
A ladder-like member is used as a display device, and multiple display devices can be connected together via the connecting portions, making it easy to attach to the steel tower, and with an integrated fall prevention rope. This has the advantage that the risk of the display device falling midway can be eliminated not only during installation and removal work, but also during painting work and the like.

[Brief explanation of the drawing]

Figures 1 to 9 show an embodiment of the present invention, Figure 1 is a plan view, Figure 2 is a side view, Figure 3 is a plan view of the display device and attachment device disassembled, and Figure 4 is a plan view of the present invention. A plan view showing a state in which two display devices are connected, and FIGS. 5 to 9 are schematic explanatory views showing a state in which they are attached. 1... Indicator, 2... Steel tower (tower for various power transmission lines),
3... Mounting tool, 9... Connecting part, 10... Holding part,
11... Rope for fall prevention, 12... Mounting part.

Claims (1)

[Scope of utility model registration request] In a dangerous zone display device for a high-voltage power transmission line tower, which is installed at a predetermined location on the tower in order to display the dangerous zone of the high-voltage power transmission line tower, the display device is made of polypropylene with a connecting portion at the end or in the middle. The indicator comprises a ladder-like member made of a lightweight member such as a steel pipe, and a mounting tool for removably attaching the indicator to the steel tower, and the indicator is connected to the tower through the connecting part. A plurality of display devices can be connected together, and the mounting device includes a holding part for fixing and holding the display device, a fall prevention rope, and a mechanism for detachably attaching the display device to the steel tower and holding the fall prevention rope. A dangerous zone display device for a high-voltage power transmission line tower, characterized in that it has a mounting portion.