JPH036928Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention aims to prevent electric shock accidents caused by negligence or illusion when working near live wires on outdoor steel structures such as power generation and substations. In order to prevent this from happening, we are targeting the live line side near the power outage work area.
This invention relates to a sign for a work area in a steel structure to call attention to the fact that it is a dangerous area.

[Technical background of the invention and its problems]

For example, special high-voltage busbars in power generation and substations are installed on the beams of outdoor steel structures using insulators, but if the surface of the insulators becomes contaminated with dust, the insulating performance of the insulators deteriorates and the It is necessary to clean and keep it clean from time to time as it may cause accidents such as tripping.

By the way, due to a power outage, workers had to climb up onto the steel beams to carry out this cleaning work. At this time, there is no problem if all the busbars on both sides of the work area are in a power outage state.

However, in the same steel beam, if the busbar on one side is a section where cleaning work can be carried out due to a power outage, but the busbar on the other side is a live line,
There was a risk that the insulators on the live side, whose insulation performance had deteriorated, could be approached or touched by mistake or illusion, resulting in death or injury due to electrocution.

[Purpose of invention]

The present invention was developed based on the above-mentioned circumstances, and clearly recognizes the live part section on the side where work is prohibited.
It is an object of the present invention to provide a marker for a work zone in a steel structure, which enables safe cleaning of insulators on a steel structure beam.

[Summary of the idea]

The outline of the present invention for achieving the above purpose is to pivotally support the proximal ends of a plurality of supporting bones in the upper bifurcated part of the fixation table, and to display fan-shaped display pieces as appropriate when each supporting bone is expanded. It is fixed to the supporting bone by a means and is configured to be foldable into a fan shape, and a lower bifurcated portion perpendicular to the bifurcated direction of the upper bifurcated portion is connected to the lower part of the fixing base, and a push screw is attached to the lower bifurcated portion. It is characterized by having a .

[Embodiments of the invention] Hereinafter, embodiments of the invention will be specifically described with reference to the drawings.

Figures 1 to 3 show a sign for a work zone in a steel structure according to the present invention (hereinafter referred to as a ``sign''). In the fixing table 3 having a bifurcated portion 1 and a lower bifurcated portion 2 above and below, one of the upper bifurcated portions 1 includes four flat plate-shaped support bones 4A, 4.
The proximal ends of B, 4C, and 4D are overlapped and supported by a shaft 5, and one of the supporting bones 4A is fixed to the inner wall of the upper bifurcated portion 1, and the other three The book support bones 4B, 4C, and 4D are rotatable by the shaft 5. When the supporting bones 4A, 4D located at both left and right ends are expanded approximately 180 degrees, each supporting bone 4A, 4 is placed in each bag portion 7A, 7B, 7C, 7D of the fan-shaped display piece 6.
A fan-shaped display piece 6 is attached to each supporting bone by storing the parts B, 4C, and 4D from the tips to approximately the middle and riveting them with pins 8.

The other lower forked portion 2 includes a handle portion 9A,
A bolt part 9B whose one end is fixed to the handle part and which is screwed into a female threaded hole 2a protruding from one of the two hanging pieces, and a bolt part 9B which is screwed into the lower fork part 2. Pressing plate portion 9c attached to the end
A push screw 9 consisting of the following is attached.

The display piece 6 may be made of mesh net or cloth, but it is preferable that the display piece 6 has a conspicuous color.

When actually using the marker 10 configured as described above, first, at the position of the fixed support bone 4A, the support bones 4B, 4C, and 4D are overlapped and folded into a fan shape to make it compact. A worker climbs onto the steel structure, then rotates the support bones 4B, 4C, and 4D by a predetermined angle about the shaft 5 so that the support bones 4A and 4D located at both left and right ends form approximately 180 degrees, and displays the display piece 6. After unfolding it into a fan shape, the fourth
As shown in the figure, in the upright piece 12a of the L-shaped plate 12 disposed on the steel beam 11, the marker 10 is attached to the edge of the steel beam 11 on the charged insulator group 13 side. It is something to be installed. To attach the marker 10, position the marker 10 so that the upright piece 12a is interposed between the press plate portion 9c and the inner wall of the lower bifurcated portion 2, and insert the handle portion 9A in the screwing direction of the bolt portion 9B. Turn it and clamp it in place.

As described above, if the sign 10 is placed upright on the steel structure beam 11 during cleaning work, the worker can always visually confirm the area where cleaning is prohibited when cleaning insulators, and also ensure that the sign 10 is not standing up. By cleaning the insulator group 14 on the power outage side, that is, on the power outage side, dust adhering to the insulator group 14 can be removed.

[Effect of idea]

As explained above, according to the present invention, it is possible to clearly recognize the side where cleaning is prohibited, so cleaning of insulators on the steel structure can be carried out safely, and since it is configured to be foldable, it is convenient to carry. The present invention provides markings for work zones in steel structures.

It should be noted that the present invention is not limited to cleaning work of insulators, but can also be sufficiently effective in work in close proximity to live wires on other steel structures.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a front view showing the fixed base, Figure 3 is its side view,
FIG. 4 is a perspective view showing an example of the usage state of the present invention. 1... Upper fork part, 2... Lower fork part, 3...
Fixation table, 4A, 4B, 4C, 4D...Support bone, 5
... shaft, 6 ... display piece, 9 ... push screw.

Claims (1)

[Scope of utility model registration request] The proximal ends of a plurality of supporting bones are pivotally supported in the upper bifurcated part of the fixing table, and when each supporting bone is unfolded, a fan-shaped display piece is fixed to the supporting bone by an appropriate means and folded into a fan shape. A work section in a steel structure, which is configured freely, and is characterized in that a lower bifurcated portion orthogonal to the bifurcated direction of the upper bifurcated portion is connected to the lower portion of the fixed base, and a push screw is attached to the lower bifurcated portion. Signs for.