JP2002362481A - Ship shock absorbing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem on a fender loaded on a ship for providing shock absorbing operation with energy absorption resulting from a change in pressure of an inside air that the amount of energy absorption in this case is not so much, compared with the case of distortional energy of an object, that is, such as in rubber ball operation, which is based on the protection of a hull from a repetitive load of repulsive force resulting from elasticity due to energy absorption to induce great repulsive force when the ship comes alongside the pier and to cause an action of pushing the ship back. SOLUTION: Shock absorbers 2 are each mounted on two opposed faces of a rigid, hollow buoyancy body 1 for absorbing energy with distortion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ship shock absorber disposed between ships or between a ship and a quay to protect the ship.

[0002]

2. Description of the Related Art Conventionally, fenders have been used as ship shock absorbers arranged between ships or between ships and quays to protect the ships. This fender is used when berthing to the quay of a ship and when berthing between ships at sea.
Generally, a spherical fender in which air is filled in a spherical bag such as an ellipse made of an elastic film is used.

[0003]

Such fenders are:
The buffering is performed by absorbing energy due to the pressure change of the internal air, but the amount of energy absorption in this case is not so large as compared with the distortion energy of the object. This is like a rubber ball,
The emphasis is on protecting the hull from repetitive loads caused by resilience caused by elasticity rather than energy absorption.

[0004] Therefore, the repulsive force at the time of berthing of the ship is large, and the action of pushing the ship back works. The same applies to the case where the ship is affected by an external force such as wind or waves, and there is a problem that the stability of the moored ship is extremely poor. Further, when the shock absorber is mounted in the hull, there is a problem that a large mounting space is required in a narrow hull due to its large shape.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention is characterized in that a buffer member that absorbs energy by distortion is attached to each of two opposing surfaces of a hollow buoyant body made of a rigid body. Further, a support member is arranged coaxially with the buffer between the two opposing surfaces in the buoyant body. Furthermore, the buoyancy of the buoyancy body is adjustable. Further, a receiving plate is attached to the surface of the buffer. Furthermore, a stable wing is attached to the buoyancy body. Further, a mooring line is attached to the buoyancy body. Furthermore, a handrail is attached to the buoyancy body. Further, a ladder is attached to the buoyancy body.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a cross-sectional explanatory view, and FIG. 2 is a perspective view.
Reference numeral 1 denotes a hollow box-shaped buoyancy body having at least two opposing surfaces, which is made of a rigid body such as a steel material or a synthetic resin material. A buffer 2 for absorbing energy by strain energy is attached to each of two opposing surfaces of the buoyant body 1 to constitute a ship shock absorber 3.

The material of the above-mentioned shock absorber 2 of the ship shock absorber 3 configured as described above is arbitrary in material, hardness, size, shape and the like, and may be, for example, an existing rubber circular fender. Further, depending on the material and structure of the buoyant body 1, a supporting member 4 such as a steel pipe may be disposed between the two surfaces in the buoyant body 1 coaxially with the buffer body 2 opposed thereto. Further, as shown in FIG. 3, the buoyant body 1 is provided with an inflow port 6 and an outflow port 7 for inflow / outflow of a fluid 5 such as granules and liquid at desired locations such as upper and lower surfaces. By adjusting the buoyancy, the draft position on the sea surface or underwater can be set to a desired position as shown in FIG. Although not shown, the same applies to the case where a weight is attached to the buoyant body.

The structure of the ship shock absorber 3 is similar to that of the support member 4.
Has been described in the structure in which the buoyancy member 1 is disposed. However, the same applies to a structure in which the buffer members 2 are attached to both ends of the support member 4 and the support member 4 is sealed and covered with the buoyant member 1. is there. According to the ship shock absorber 3 having such a configuration, when it is disposed between the quay and the ship or between the ships, the generation of the load repeatedly received by the repulsive force generated by the elasticity is smaller than that of the pneumatic fender, and the energy absorption is stable. And the energy absorption is highly efficient, so that it can be formed in a small size.

The ship shock absorber 3 having the above-described structure and operation can be modified in many ways. For example, as shown in FIG. 5, a plurality of shock absorbers 2 are provided, and each of the plurality of shock absorbers 2 is provided. The material, hardness, size, shape, etc. of the material can also be changed. By appropriately selecting the place of use, the type of ship, the size of the ship, and the like, energy can be absorbed with a displacement amount corresponding to the contact surface between the quay and the side of the ship, and partial stress concentration can be prevented.

The surface of the buoyant body 1 on which the cushioning body 2 is mounted may not be a parallel surface having the same shape as shown in FIGS. 3 and 5, for example, as shown in FIG. It may be a surface or one side may be an inclined surface, or may be a stepped surface or the like as shown in FIG. By doing so, it is possible to adopt a configuration in which energy can be stably absorbed according to the place of use, the hull form, the size of the marine vessel, etc., as described above, the damage of the marine shock absorber 3 itself is reduced, and The rocking stability of the ship can be improved by following the shape of the ship or quay.

Further, as shown in FIGS. 8 and 9, by attaching a receiving plate 8 made of synthetic resin or metal to the surface of the buffer 2, a surface corresponding to the inclined surface of the ship's side can be obtained. Thus, partial stress concentration can be prevented, and the stability of the sway of the ship is improved, and the hull can be prevented from directly contacting the buoyant body 1 when the shock absorber is tilted.

Further, as shown in FIGS. 10 and 11, a structure in which a stabilizing wing 9 having a desired shape is attached to the buoyant body 1 may be employed. Will be. Second Embodiment The ship shock absorber as described above has a multipurpose function by attaching an additional material in addition to a simple ship shock absorber function due to its structure.

An example of the additional material will be described below, but the additional material is not limited to the following example, and any additional material may be used. Therefore, as shown in FIG. 12, the mooring line 10 is attached to the buoyant body 1 so that when the berth or the ships come alongside each other, when the ship is moored with the ship shock absorber 3 interposed, The berthing operation can be easily performed.

Further, as shown in FIG. 13, by providing an enclosure or a handrail (hereinafter referred to as a handrail) 11 on the upper surface of the buoyant body 1, draft adjustment work, mooring work, movement of a person, etc. on the ship shock absorber can be performed. You can do it safely. The structure of the handrail 11 is a folding type or a buoyant body 1 even in a fixed state.
Any structure, such as a structure that can be stored inside, may be used. In addition, workability is improved by attaching a fastener to the target ship or quay to the handrail 11.

By providing such handrails, draft adjustment work, mooring work, and movement of persons can be performed safely. Further, as shown in FIG. 14, a scaffold or a ladder 12 is provided on the buoyant body 1, and the ladder 12 may have any structure such as a foldable type or a structure capable of being stored in the buoyant body 1 like the handrail. Further, as shown in FIGS. 15 and 16, it is a matter of course that the handrail 11 and the scaffold or the ladder 12 are combined, and the combined structure may be vertically movable by the buoyant body 1 as shown in FIG.
Also, it is preferable to attach a fastener to the target ship or the quay to the ladder 12.

When the ladder is attached in this way, between ships,
People can be safely moved between the senior and the quay. In addition, although not shown, if the end fixing device of the ladder hanging from the ship or the quay is provided in the buoyant body 1, the stability when the ladder is put is good and the safety can be secured.

[0017]

According to the present invention described in detail above, the structure in which the buffer is attached to the sealed buoyant body eliminates the need to manage the air pressure and the like of the conventional spherical fender, and the handling is simplified. In addition, the size of the fender can be reduced, and the size of the fender can be reduced.

In addition, there is an effect that the energy absorption efficiency is good and the stability at the side is improved. Furthermore, the material of the buffer,
By changing the hardness, size, shape, and the like, energy can be absorbed with a displacement amount corresponding to the contact surface of the quay or the ship's flank, and there is an effect that partial stress concentration can be prevented. In addition, the present invention has an effect that various functions can be added to the buoyancy body by separately configuring the buoyancy body constituting the buoyancy part and the cushioning body constituting the cushioning part.

Further, since the buoyancy of the buoyant body can be adjusted, there is an effect that the draft position can be set to a desired position. In addition, by attaching an additional material such as a handrail, a ladder, or a mooring line, there is an effect that it can be used not only for a ship but also for various purposes.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing a first embodiment;

FIG. 2 is a perspective view

FIG. 3 is an explanatory view showing an example in which a fluid port is provided in a buoyant body.

FIG. 4 is an explanatory diagram showing a change in draft.

FIG. 5 is an explanatory view showing an example of another buffer.

FIG. 6 is an explanatory view showing another example of a buoyant body.

FIG. 7 is an explanatory view showing another example of a buoyant body.

FIG. 8 is an explanatory view of an example in which a receiving plate is attached to a buffer.

FIG. 9 is an explanatory view of an example in which a receiving plate is attached to a buffer.

FIG. 10 is an explanatory view of the front and side surfaces of an example in which a stabilizer is attached to a buoyant body.

FIG. 11 is an explanatory view of the front and side surfaces of an example in which a stabilizer is attached to a buoyant body.

FIG. 12 is an explanatory view of an example in which a mooring line is attached to a buoyant body.

FIG. 13 is an explanatory view of an example in which a handrail is attached to a buoyant body.

FIG. 14 is an explanatory view of an example in which a ladder is attached to a buoyant body.

FIG. 15 is an explanatory diagram of an example in which a ladder and a handrail are combined.

FIG. 16 is an explanatory diagram of an example in which a ladder and a handrail are combined.

[Explanation of symbols]

Reference Signs List 1 buoyant body 2 shock absorber 3 ship shock absorber 4 support material 5 fluid 6 inflow port 7 outflow port 8 receiving plate 9 stabilizer wing 10 mooring line 11 handrail 12 ladder

Claims (9)

[Claims] 1. A ship shock absorber wherein a shock absorber for absorbing energy by distortion is attached to each of two opposing surfaces of a hollow buoyant body made of a rigid body. 2. The ship shock absorber according to claim 1, wherein a support member is disposed coaxially with the shock absorber between the two opposing surfaces in the buoyant body. 3. The ship shock absorber according to claim 1, wherein a shock absorber is attached to both ends of the supporting member, and the supporting member is surrounded by a buoyant body so as to cover and seal the supporting member. 4. The ship shock absorber according to claim 1, wherein the buoyancy of the buoyant body is adjustable. 5. The ship shock absorber according to claim 1, wherein a shock receiving plate is attached to the shock absorber. 6. The ship shock absorber according to claim 1, wherein a stabilizing wing is attached to the buoyant body. 7. The ship shock absorber according to claim 1, wherein a mooring line is attached to the buoyancy body. 8. The ship shock absorber according to claim 1, wherein a handrail is attached to the buoyancy body. 9. The ship shock absorber according to claim 1, wherein a ladder is attached to the buoyancy body.