JPH0326541Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> This invention relates to a marking device, and mainly relates to a marking device used for preventing collisions of ships with marine floating hose lines and for marking traffic on general roads.

<Prior art> Floating hose lines, which are conventionally laid floating on the sea, are marked with flashing lights, radar reflectors, etc. attached to the tips of metal poles to prevent ship collisions, especially when navigating at night. Devices are provided at predetermined intervals.

However, when a plurality of hose lines are installed in parallel, the above-mentioned sign may come into contact with an adjacent hose due to shaking due to waves, etc., and the hose may be damaged.

For this reason, a system in which the column of the above-mentioned marker device is made of a rubber cylindrical body has been developed and put into practical use.However, the cylindrical body easily bends due to violent shaking under rough weather, and the surface of the hose is damaged. Not only can the hose be damaged by hitting or rubbing, but the marking device itself can also be damaged.

On the other hand, rubber cylindrical markers equipped with retroreflectors and flashing lights have been put into practical use as signage devices to indicate traffic divisions on general roads. It has been destroyed and its remains are scattered on the streets, causing problems. In order to deal with this problem, it may be possible to provide the cylinder with high rigidity, but if it is made too rigid, it may cause trouble in steering in the event of a vehicle collision, which could even lead to a disaster. Therefore, the above-mentioned marker posts are required to be flexible to some extent, have buffering performance, and be difficult to break. Therefore, a marker pole that secures a certain degree of flexibility by embedding a coil spring in a solid rubber body has been proposed (see, for example, Japanese Utility Model Application Publication No. 156636/1983).
This beacon has a solid structure and is strongly integrated with hard rubber and springs, so it is still highly rigid and can withstand several impacts, but it is not subject to strong bending stress like at sea. When used under severe conditions with repeated loading, there is a problem in that fatigue failure occurs early, making it difficult to apply it to ship marking devices.

<Purpose> This invention improves the rigidity of the column, while also making it possible to kink (buckling) when an external force acts on the column beyond its bending resistance limit, and to recover when the external force is removed, thereby solving the above problems. This is what we are trying to resolve.

<Structure> The structure of the marking device for ships, etc. of this invention to achieve the above object is that the marking device is equipped with a warning means such as a flashing light at one end of the support, and the above-mentioned support is constructed of a rubber cylinder. and at least one on each of the inner circumferential side and the outer circumferential side of the cylindrical body.
It is characterized in that the metal cord of the layer is embedded and extends in the longitudinal direction.

<Example> Next, an example of this invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a marking device A for a floating hose line.

Reference numeral 1 denotes a rubber cylinder as a support for the above-mentioned marking device A, and the upper end is equipped with a warning means 2 such as a flashing light or a radar reflector, and the lower end is
It is fastened and fixed by a pair of half-cylindrical fixing members 3.

The rubber cylinder 1 is formed into a cylindrical shape in the figure, and has one layer of metal cords 1b extending in the longitudinal direction near the inner circumference side and near the outer circumference side of the rubber layer 1a. It is buried along almost its entire length.

The distance d between the inner and outer circumferences of this metal cord 1b is
It is usually set in the range of 5 to 20 mm, and the flow direction of the fibers of each metal cord 1b is
The inner circumferential side and the outer circumferential side are inclined symmetrically with respect to each other. .

On the other hand, the outer diameter of the cylinder 1 is 1/10 of its total length.
The bending rigidity of the cylinder 1 is preferably set as follows, and the bending rigidity of the cylinder 1 is adjusted by appropriately selecting the hardness and thickness of the rubber that constitutes the cylinder 1.

In this way, by configuring the metal cord 1b to be separated from each other at the inner and outer circumferences, the rubber cylinder 1 has appropriate rigidity and flexibility, and the external force caused by a collision with a ship, etc. Kink (buckling) occurs when the bending resistance exceeds the limit, and when the external force is removed, it can return to its upright state again.

The marking device A is fixed upright on the floating hose line via an adapter 5 fixed to the flange 4 on the hose side.

Note that the metal cord 1b may be constructed of two or more layers on each of the inner and outer circumferential sides of the cylindrical body 1 (see Fig. 3), and in this case as well, appropriate rigidity can be exhibited. Thus, the distance d between the inner and outer circumferences of the metal cord 1b is maintained at about 5 to 20 mm. However, too many metal cords 1
When adding b, the rigidity of the metal cord 1b itself increases and the rubber layer 1a interposed between the metal cords 1b increases.
As the cushioning performance decreases as the thickness decreases, the rubber cylinder 1 becomes excessively rigid, which is undesirable.
In addition, in the above case, if the fibers of the metal cord 1b are arranged with the flow direction inclined with respect to the axis of the cylinder 1, the adjacent metal cords 1b on the inner circumference side and the outer circumference side are It is preferable to arrange it at an angle.

Further, the above-mentioned signage device A is not limited to the illustrated embodiment, and by particularly changing the structure of the fixing member 3, it can be used as a signage device for displaying traffic divisions on general roads.

<Effects> As described above, according to the marking device for ships, etc. of this invention, the metal cord is embedded in the rubber cylinder serving as the support and separated from the inner and outer peripheries, so it has appropriate rigidity and flexibility. It is resistant to bending even in rough weather, prevents the above-mentioned problem of damaging the hose, and is suitable for use under harsh conditions where strong bending forces are repeatedly applied due to wind and waves. Although it has a simple structure, it can exhibit excellent bending fatigue strength. Furthermore, if a strong external force is applied due to a collision with a ship, vehicle, etc., it is possible to avoid buckling and damaging the marking device itself. Moreover, once the external force is released after the buckling, the sign device can be erected again and continued to be used, which, together with the fact that the sign device itself is not easily damaged, reduces the effort required to maintain and manage the sign device. It has various excellent practical effects such as cost reduction.

[Brief explanation of the drawing]

The figure shows an example of this invention.
The figure is a sectional view, FIG. 2 is a sectional view along the line taken from the front figure, and FIG. 3 is a sectional view showing another embodiment. 1...Rubber cylinder, 1a...Rubber layer, 1b...
Metal cord, 2...warning means, 3...fixing member,
A... Marking device.

Claims (1)

[Scope of utility model registration request] In a sign device equipped with a warning means such as a flashing light at one end of a support, the support is made of a rubber cylinder, and at least one layer of metal is provided on each of the inner and outer sides of the cylinder. A marking device for ships, etc., characterized in that a cord extends in the longitudinal direction and is buried.