JPS6058332B2 - floating fender - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-glare device particularly suitable for a quay wall where the tidal difference is severe.

For example, the anti-glare device is a so-called "assembled type fender" for large ships, which consists of a pair of COM fenders with an I-shaped cross section arranged vertically or horizontally symmetrically, and an impact plate attached to the top of each of them. There are known systems for relatively small ships that consist of a hollow horizontally elongated rubber fender with a V-shaped or Y-shaped cross section. It is fixed directly to the surface of the quay using anchor bolts, etc.

Therefore, in areas where the tidal difference is large, it is recommended to place the above-mentioned fenders in several tiers one above the other on the surface of the quay, or to increase the dimensions of the individual fenders and their impact plates. Because it was designed to respond to the tidal difference, it required a considerable amount of equipment cost. In addition, in the case of an anti-glare device for a small ship, such as a V-shaped fender, as illustrated in FIG. By doing so, the impact receiving area can be expanded without spending too much money, but this causes unreasonable force to be applied to the fender 1 at low tide, which is unfavorable in terms of its durability.

On the other hand, according to a pneumatic anti-glare device made of an air-filled rubber bag, the rubber bag moves up and down depending on the tide, but it is difficult to maintain and is not suitable for large ships. Therefore, an object of the present invention is to provide an anti-glare device that can move up and down depending on the ebb and flow of the tide and can always exhibit optimum energy absorption ability. Hereinafter, the present invention will be described in detail with reference to embodiments shown in the accompanying drawings.
FIG. 2 illustrates an embodiment in which the present invention is applied to an anti-glare device for a large ship called a so-called assembled type fender device.

That is, this anti-glare device has a pair of rubber fenders 11, 11 having an I-shaped cross section, and in this embodiment,
The fenders 11, 11 are vertically arranged symmetrically. Then, the quay surface 1 of each fender 11, 11
A first foreign film 13 is attached to one end of the side facing 2, and a second foreign movie 14 is attached to the other end of the opposite side, that is, the top surface side. It is configured to be floated above the sea surface by the first and second Western films 13 and 14 of. In this case, the second Western movie 1
4 is also used as an impact receiving plate, and a plurality of impact receiving pads 15 made of rubber, plastic, or the like having high oil resistance, water resistance, and weather resistance are affixed to the side surface thereof. It goes without saying that the impact receiving pad 15 may be of a single-layer structure that covers the surface of the second floating box 14, unlike the one shown in the drawings. As illustrated in FIG. 3, the floating boxes 13 and 14 are made up of sealed bodies with a three-dimensional framework structure, and are actually filled with a small amount of water or a liquid with a light specific gravity. It is becoming possible to ballast. The floating box may be made of iron, wood, or plastic, and may be filled with foam. In the embodiment shown in FIG. 2, this fender is moored to the quay face via two mooring lines 16, 16 made of chains etc. attached to both left and right ends of the second floating box 14. Ru. Also, in this connection, a different mooring means from the above is shown in FIG. That is, although only one side is shown in the figure, two mooring lines 16 each having a weight 17 attached thereto are suspended from the quay with an interval approximately equal to the width of the first floating box 13. On the contrary,
Guide rings 18 through which the mooring cables 16 are inserted are provided on both sides of the first floating box 13, so that this fender device uses the mooring cables 16 as a guide means to move up and down according to the tidal difference. It will be installed on the quay so that it can be moved easily. In this floating type fender device, a ship comes into contact with the side of the second floating box 14 which also serves as a shock absorbing plate to which the shock absorbing pad 15 is attached, and the rubber fenders 11 are compressed on the quay side. When the fender 11, . 11 bends and absorbs that energy.

In that case, the seawater sandwiched between the first and second floating boxes 13 and 14 will be compressed, so at the same time, the buffering effect will be reduced, although it is small compared to the buffering capacity of the fender 11. shown. In addition, the illustrated example smells! When the height of the fender 11 is 1000 Twt1 and the length is 200'', the underwater weight of the fender 11 is about 900 k9, assuming that the specific gravity of the rubber is about 1.2. Therefore, the floating box has a thickness of 9TIr, for example.
If the length and width of the IfE iron plate is 200Dm and the height is 50Dm, the weight will be approximately 1
Since a buoyancy of t0n is obtained, the fender can be sufficiently floated in seawater. In addition, the height of the entire fender device in the vertical direction with respect to the quay surface 12 is H1 quay surface 1
When the width in the vertical direction parallel to 2 is L, H>L,
In addition, stability is better if the submerged part is larger than the part above the water surface. As is clear from the description of the embodiments described above, this invention comprises a fender 11 made of rubber or the like, and a first fender 11 fixed to one end of the fender 11 on the side facing the quay wall surface 12. A floating box 13 and a second floating box fixed to the other end on the opposite side of the fender 11 and having an impact receiving pad 15 on the fender surface, the fender 11 is connected to the first The second floating box 13, 14 is suspended above the sea surface and moored to a quay via a mooring cable 16 such as a chain.

Therefore, in areas with large tidal differences, there is no need to install a large number of fenders or increase the size of each fender as in the past, significantly reducing installation costs. I can do it. In addition, because it is installed floating on the sea surface, it can always exhibit optimal energy absorption capacity even with the ebb and flow of the tide, and it is extremely easy to maintain compared to conventional pneumatic fender systems. In the above embodiments, fenders having an I-shaped cross section have been described as an example, but the present invention is not limited thereto, and may be applied to fenders having a cross section of a ■-shape, a Y-shape, or a rectangular tube shape. Of course, it is also applicable to materials.

[Brief explanation of the drawing]

Fig. 1 is a drawing for explaining a conventional example, Fig. 2 is a perspective view showing a floating fender according to the present invention, Fig. 3 is a perspective view showing a floating box with a part cut away, Fig. 4 FIG. 2 is a perspective view showing another embodiment of the present invention, which is a slight modification of the mooring means shown in FIG. 2; In the figure, 11 is a fender, 12 is a quay wall surface, 13 and 14 are floating boxes, 15 is a receiving pad, and 16 is a mooring line.

Claims (1)

[Claims] 1. A fender made of rubber or the like, a first floating box fixed to one end of the fender on the side facing the quay wall surface, and fixed to the other end of the fender on the opposite side, and a second floating box having a shock absorbing pad made of rubber or plastic on its side surface, and the fender is suspended above the sea surface by the first and second floating boxes, and A floating fender characterized by being moored to a quay via a mooring line.