JPH0140796Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a retractable mooring type spar buoy.

A retractable mooring type super buoy is a floating body attached halfway to the target that is completely submerged in the water, and the buoyancy of the floating body allows the target with a light device on the top to stand upright. It has the characteristic that a stable light buoy can be obtained without any buoyancy. Conventionally, the floating body of this super buoy has been made of metal or the like and has a single solid cylindrical shape that has the required buoyancy, and is integrally fixed to the target midway through the target. However, when a super buoy with a conventional structure differs in design conditions such as water depth and tidal current of the water area in which it is installed, and a floating body with a different buoyancy is required, the super buoy, including the floating body, must be newly designed and created each time. It didn't happen.

Additionally, when the mooring chain is set up at the site, the water is deep, and if the mooring chain is too long, the weight of the chain will not provide enough buoyancy. Or, there are many cases where the current is too fast and buoyancy is insufficient.

Furthermore, when used as construction signs, it is necessary to move the marker position according to the progress of the construction work, and it is often necessary to increase or decrease the buoyancy to match changes in water depth or tidal currents. In this case, the buoyancy of the conventional spar buoy could not be adjusted at all, and it was necessary to order a new spar buoy that met the conditions.

Therefore, it has the drawbacks of being time consuming and expensive.

In this invention, the floating body is constructed by stacking a plurality of annular floating bodies made of synthetic resin that are easy to mold, and these floating bodies are easily attached to and detached from the specimen, thereby achieving the buoyancy required by the super buoy. By selecting the number of combinations of annular floating bodies, it can be easily adapted, and the buoyancy can be easily increased or decreased at the installation site, providing a super buoy that is extremely economical in production cost.

The contents of the present invention will be explained below according to embodiments shown in the attached drawings.

FIG. 1 shows a partially cutaway front view of a retractable mooring type spar buoy according to the present invention.

As shown in the figure, in the retractable mooring type spar buoy of the present invention, a cylindrical specimen 2 with a light fixture 1 attached to the top thereof is inserted into a central hole 4 of a floating body 3 , and flanges 6, 6' are inserted in the middle of the specimen 2. The floating body 3 is clamped and fixed by interposing the packings 5 and 5', and a short mooring line 8 or a universal joint (not shown) connected to the mooring ring 7 provided at the lower end of the specimen 2 is moored. The floating body 3 is drawn into the water by a sinking weight 9 on the seabed by a tool, and the water line is located in the middle of the specimen 2 above the floating body 3 ,
The specimen 2 is moored in an upright position.

The floating body 3 includes two flat cylindrical annular floating bodies 10.
Stacked one on top of the other, trapezoidal conical annular floating bodies 1
1 and 11' are stacked one on top of the other so that their respective large-diameter surfaces abut against the flat cylindrical annular floating body 10.

Each of the annular floating bodies 10, 11, and 11' has an outer skin 12 made of an easily moldable synthetic resin, such as polyethylene, and an interior filled with compression-resistant closed-cell foamed resin 13, such as polyurethane foam. . (See FIG. 2) A plurality of grooves 14 (three in the illustrated example) are provided on the upper surface of the flat cylindrical annular floating body 10.

This concave line 14 may be concentric, radial concave at appropriate angular intervals, or intermittent concave.
Or a combination of these various concave shapes.

The lower surface of the flat cylindrical annular floating body 10 is provided with a convex portion 15 having the same shape as the concave portion 14 on the upper surface.

Further, an annular floating body 10 is provided on the surface of the trapezoidal conical annular floating body 11 in the upper layer that is in contact with the flat cylindrical annular floating body 10.
A convex strip 15' of the same shape that fits into the concave shape 14 is provided, and the surface of the lower trapezoidal conical annular floating body 11' that is in contact with the flat cylindrical circular floating body 10 is
A concave portion 14' of the same shape is provided which fits into the convex strip 15 of.

This eliminates the possibility that when the annular floating bodies are piled up, the respective protrusions and grooves will fit together, causing misalignment between the annular floating bodies.

The floating body 3 is held between the flanges 6 and 6' via the gaskets 5 and 5', and each annular floating body constituting the floating body 3 is constantly subjected to an upward force due to buoyancy, so that the protrusions and depressions The fit with the strip is tight, and there is no risk of misalignment such as rotational misalignment.

As shown in Figure 3, the flange structure is such that one flange 6 (the upper flange in the example shown) is fixed, and the other lower flange 6' is split into two and can be attached and detached (see Figure 1). . Therefore, since the floating body 3 of the present invention is removably attached to the specimen 2 through the flanges 6, 6', assembly can be carried out satisfactorily even on site.

Further, since the floating body 3 is composed of several annular floating bodies, the buoyancy can be adjusted.

That is, when a large buoyancy is required, the number of annular floating bodies may be increased, and when a small buoyancy is required, the number of annular floating bodies may be reduced.

Therefore, in the past, floating bodies with the buoyancy required for a particular water body were designed and manufactured each time depending on the water depth and tidal current conditions, but according to the present invention, the number of combinations of annular floating bodies can be selected. can be easily dealt with. Furthermore, by increasing or decreasing the number of ring-shaped floating bodies, it is possible to increase or decrease the buoyancy on-site, which could not be done conventionally, very easily and quickly. Furthermore, since the cylindrical object 2 can be manufactured separately from the floating body, standardization can be achieved by appropriately providing a flange joint, and the above-mentioned floating body set can also be suitably adapted to different water depths.

In addition, by making the annular floating bodies above and below a trapezoidal cone shape, it is possible to reduce the resistance of the superimposed floating bodies in the water flow, and it is possible to reduce the inclination of the marker column due to the water flow in water flow or waves. .

In addition, if the floating body is damaged, it can be repaired by replacing only the damaged part of the annular floating body.
The uneconomical problem of having to replace the entire floating body, and sometimes the entire superbuoy, as in the past, is completely eliminated, making it extremely economical.

The annular floating body is easy to mold and the outer skin is made of inexpensive synthetic resin, making it easy to mass produce.
It has excellent productivity, economy, and ease of handling.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a retractable mooring type spar buoy according to the present invention, Fig. 2 is a sectional view of the main part showing the structure of the annular floating body, and Fig. 3 is a view showing the flange portion. 2... Cylindrical object, 3 ... Floating body, 4... Central hole, 5, 5'... Packing, 6, 6'... Flange, 7... Mooring ring, 8... Mooring line, 9... sinking weight,
10... flat cylindrical annular floating body, 11, 11'...
...Trapezoidal cone-shaped annular floating body, 12... Outer skin, 13...
...Compression-resistant closed-cell foam resin, 14,14'
...concave stripes, 15,15'...convex stripes.

Claims (1)

[Scope of utility model registration request] A cylindrical object has a buoyant body in the middle and a mooring ring at the lower end, and the buoyant body is completely immersed in water using a mooring device so that the water line is in the middle of the cylindrical object above the buoyant body. In a light buoy that is retracted and moored to stand upright due to buoyancy, the buoyant body is formed by stacking multiple annular floating bodies whose outer skin is made of synthetic resin and whose interior is filled with compression-resistant closed-cell foamed resin. , the upper and lower ends are trapezoidal conical annular floating bodies, and the middle is a stack of flat cylindrical annular floating bodies, and each contact surface of the upper and lower annular floating bodies has a plurality of concentric grooves and protrusions. The circular floating body is clamped and fixed from above and below by the two upper and lower locking flanges provided on the circular floating body. A retractable mooring type spar buoy characterized by one flange being detachable.