JPH0118672Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to the improvement of floating shock absorbers, which can be used when floating objects such as ships or driftwood collide with underwater structures such as bridge piers.
It absorbs the collision energy and prevents damage to ships, and is used as a shock absorber to protect underwater structures.

[Conventional technology]

In recent years, long bridges and the like have been constructed in sea areas where there is a large amount of ship traffic, and as a result, the risk of ships accidentally colliding with underwater structures such as bridge piers has increased.

Therefore, a floating shock absorber consisting of multiple floating fenders connected to each other is moored around an underwater structure and made to float.When a ship invades an underwater structure, the floating shock absorber to receive the ship,
It absorbs ship collision energy to prevent ships from colliding with underwater structures, thereby minimizing damage to underwater structures and ships.

However, because this type of floating shock absorber is constantly affected by external forces such as waves, currents, or fluctuations in the tidal level, each floating fender moves independently, and the connection that connects each floating fender is affected. If the coupling function is lost due to wear and deformation, or if the ship collides with the bow between the coupling parts of each floating fender, the couplings will be severed and the bow will be damaged as they do not have cushioning performance. There is a risk of a direct collision with an underwater structure and the bow of the ship being crushed in one direction.Furthermore, repairing or replacing damaged floating fenders or replacing couplings must be carried out at sites where currents, waves, etc. are constantly active. There were problems such as it being difficult to carry out and risking human life.

Therefore, in order to solve the above-mentioned problems, the inventors of the present application set up a method for each connecting part of a plurality of floating fenders placed around an underwater structure, so that the center part of the fender is smaller than the outer diameter of the fender. an elastic spacer having a hollow portion that can accommodate the connector of the fender, and connecting a tension connecting member to the outer periphery of each connector of the fender;
The elastic spacer is always compressed and clamped by the tension connecting member, and even if external forces such as tidal currents, waves, or fluctuations in the tidal level act, each floating fender is prevented from swaying individually, and each It prevents and reduces wear and tear on the fenders and connecting fittings at the joints of floating fenders, and provides cushioning performance even in the event of a bow collision in the gap between the connecting parts. We have developed an excellent floating shock absorber that makes it easy to replace the equipment, and have already filed an application. (Refer to Utility Model Application No. 58-199791) [Purpose of the invention] The purpose of the invention is to further improve the above-mentioned floating shock absorber so that the entire device can be integrated with water level fluctuations due to tidal currents, waves, or tidal level fluctuations. To provide an excellent floating shock absorber that can maintain a sufficient shock absorbing function at all times without causing wear or damage to the floating fenders, elastic spacers, and tension connecting members that make up the device, even when following the be.

[Structure of the idea]

That is, in the present invention, each connecting part of a plurality of floating fenders arranged around an underwater structure can include a connecting tool of the fender in the center with a diameter equal to or less than the outer diameter of the fender. A floating shock absorber is provided with an elastic spacer having a hollow part, and a tension connection member is connected to the outer periphery of each connection part of the fender, and the elastic spacer is always compressed and clamped by the tension connection member. The gist of the floating shock absorber is that a sliding member protruding from the outer peripheral surface of the fender is attached to the underwater structure side of the elastic spacer.

Hereinafter, the present invention will be explained in detail by way of examples with reference to the drawings.

1 to 3 show a floating shock absorber according to an embodiment of the present invention, FIG. 1 is an explanatory plan view showing the floating shock absorber installed on an underwater structure, and FIG. Fig. 1 - Enlarged explanatory diagram of the cross section in the direction of arrows,
FIG. 3 is a partially enlarged front view illustrating the fender of the present floating shock absorber, its connecting portion, elastic spacer, and tension connecting member.

In the figure, E denotes a floating shock absorber according to an embodiment of the present invention, in which a plurality of floating fenders 10 arranged around the underwater structure G are connected to each connecting portion 10a of the floating fender 10. An elastic spacer 20 having a diameter of 10 d or less and having a hollow part 21 in the center that can contain the connector 11 of the fender 10 is attached, and a tension connecting member 30 is connected to the outer periphery of each connecting part 10a of the fender 10. However, the elastic spacer 20 is always compressed and clamped by the tension connecting member 30.

In the present invention, in particular, a sliding member S protruding from the outer peripheral surface of the fender 10 is attached to the underwater structure G side of the elastic spacer 20.

To further explain this structure, the sliding member S
is a rubber-like elastic material such as chloroprene rubber with excellent weather resistance or urethane rubber with excellent abrasion resistance,
Alternatively, it is made of a material that does not damage the underwater structure G and has excellent sliding properties, such as plastic such as nylon or Teflon, which has excellent wear resistance and a small coefficient of friction, or a combination of these, as shown in Figure 2. The elastic spacer 20 is attached to the underwater structure G side so as to protrude from the outer peripheral surface of the fender 10.

And the elastic spacer 2 of the sliding member S mentioned above.
In this embodiment, the means for attaching to the sliding member S is a through hole provided in the sliding member
The tensile connection member 30 is inserted through Sa and attached to the underwater structure G side of the elastic spacer 20.

Therefore, it is possible to greatly facilitate vertical movement of the floating shock absorber E due to fluctuations in water level due to tidal currents, waves, changes in the tide level, etc., and the floating fender 10 constituting the floating shock absorber E has a high elasticity Spacer 2
0 and the tension connecting member 30 can be completely prevented from being worn out or damaged.
can maintain a sufficient buffering function at all times.

In addition, in this embodiment, the floating fender 10 has air inside a thin membrane bag made of a rubber-like elastic material with a reinforcing layer (not shown) embedded therein, as shown in FIG. Alternatively, the outer surface of the fender 10 is covered with a chain 40 made of a chain woven with tires 41, a wire rope, etc., and the end of the chain 40 is are converged and tightly connected to the base 12.

As described above, on the outer periphery of the connector 11, there is an elastic spacer which has an outer diameter equal to or less than the maximum outer diameter of the fender 10 and has a hollow portion 21 in the center that can contain the connector 11. 20 are fitted and inserted, and the outer periphery is connected in series with a tension device 32 such as a turnbuckle, and the elastic spacer 20 is connected in a state in which it is compressed by an appropriate amount by a tension connecting member 30 consisting of a chain 31 etc. connected to a chain net 40. has been done.

This elastic spacer 20 and the tension connecting member 3
The strength of 0 is set so that the plurality of fenders move together due to currents, waves, etc. using the compression reaction force of the elastic spacer 20, and in this state, the connector 11 has no tension. The length is greater than the minimum length required to connect the bases 12 so that they do not work.

In addition, the elastic spacer 20 is used as the floating fender 10.
It is preferable to use a rubber-like elastic body or a combination of a rubber-like elastic body and a plastically deformable material or a brittle fracture material.

Therefore, even if tidal currents, waves, etc. act during non-collision, the floating fenders 10 can provide appropriate rigidity to the mutual connection parts 10a and can be made to move integrally, and each fender 10 Collisions can be prevented, damage to the fender 10 can be prevented, and deformation and wear of the connector 11 can also be prevented.

In addition, the elastic spacer 20 and the tensile connection member 30
When replacing the floating fender 10, it can be easily replaced by sequentially removing the tension connecting members 30 while rotating the floating fender 10 using the rotatable connector 11a.

Furthermore, even if the tension connecting member 30 is damaged, the connecting tool 1
1 can function to prevent the fender from being washed away.

Moreover, in the event of a ship collision, as described above, a plurality of floating fenders 10 are connected to their connecting portions 10a.
Since the elastic spacer 20 having a buffering function is provided and integrally connected, the ship and the underwater structure G can be safely protected regardless of the collision site.

In particular, in the event of a diagonal bow collision, the chain net 40 and the tension connecting member 30 are integrally connected, so the ship can be turned smoothly without the bow getting caught in the connecting part as in the past. .

Furthermore, since the entire fender 10 is deformed due to a collision to alleviate the impact, the fender 10 can be made smaller and more economical than conventional fenders, and the width of the fender protruding from the underwater structure G can be reduced.

Note that the outer diameter of the elastic spacer 20 is the same as that of the fender 10.
Although the outer diameter of the elastic spacer 20 is set to be equal to or smaller than the maximum outer diameter of the fender 10 as much as possible, it is preferable to make the outer diameter of the elastic spacer 20 as close as possible to the outer diameter of the fender 10 from the viewpoint of improving the cushioning performance and increasing the rigidity of the connecting portion.

In addition, the shape of the elastic spacer 20 may be a torus having a hollow part 21 in the center or a space provided in a part of the torus, and the structure of the elastic spacer may be an integrated one or a plurality of pieces. is possible.

[Effect of idea]

As described above, in the present invention, a sliding member protruding from the outer peripheral surface of the fender is attached to the underwater structure side of the elastic spacer, so that the floating structure can be easily adjusted by changing the water level due to tidal currents, waves, or fluctuations in the tidal level. The vertical movement of the shock absorber can be greatly facilitated, and the floating fender, elastic spacer 20, and tension connection member 30 that constitute the floating shock absorber can be completely prevented from being worn out or damaged. This floating shock absorber can always maintain a sufficient buffer function.

Further, when the sliding member becomes worn and needs to be replaced, only the sliding member can be easily removed and replaced, which, together with the above-mentioned effects, is extremely economical.

[Brief explanation of the drawing]

1 to 3 show a floating shock absorber according to an embodiment of the present invention, FIG. 1 is an explanatory plan view showing the floating shock absorber attached to an underwater structure, and FIG. Fig. 1 - Enlarged explanatory diagram of the cross section in the direction of arrows,
FIG. 3 is a partially enlarged front view illustrating the fender of the present floating shock absorber, its connecting portion, elastic spacer, and tension connecting member. DESCRIPTION OF SYMBOLS 10... Floating fender, 10a... Each connection part of floating fender, 20... Elastic spacer, 30...
...Tension connection member, S...Sliding member.

Claims (1)

[Scope of utility model registration request] An elastic structure in which each connecting part of a plurality of floating fenders arranged around an underwater structure has a hollow part in the center that is smaller than the outer diameter of the fender and can accommodate the connecting tool of the fender. A floating shock absorber is provided, in which a spacer is attached, a tension connection member is connected to the outer periphery of each connection part of the fender, and the elastic spacer is always compressed and clamped by the tension connection member, and the elastic spacer is A floating shock absorber characterized in that a sliding member protruding from the outer peripheral surface of the fender is attached to the underwater structure side.