JPS6315376Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rubber cushioning material for quay corners, and more specifically to a quay wall that improves the ability to prevent damage to the quay structure and the bow of a small vessel such as a fishing boat when docking. This invention relates to rubber cushioning materials for corners.

B. Prior Art Conventionally, rubber cylindrical fenders with various cross-sectional shapes, such as an inverted V-shape and an inverted Y-shape, have been attached to the vertical surface of a quay facing the sea surface, and this prevents the impact between the ship and the quay when it berths. absorbs and prevents damage to both. However, small vessels such as fishing boats often dock at the quay from the bow, and at high tide, the bow often collides with the upper corner of the quay, causing the bow and the upper edge of the quay to berth. be damaged. As a means of preventing such damage accidents, a reverse L is installed at the corner of the quay.
A rubber cushioning material having a cross-sectional shape such as a letter shape is attached. However, the known buffering material is
Since it is a solid block formed from a single type of rubber material, it has poor impact energy absorption performance and cannot exhibit a practically sufficient buffering effect (see characteristic curve d in FIG. 4). In order to eliminate this drawback, a block body 1 as shown in FIG.
A cavity 2 is formed inside the block body 1, or a cavity 2' is formed between the inner surface of the block body 1 and the quay corner 3 as shown in FIG. 2, and the elastic deformation of these cavities is utilized. A method has been proposed to absorb the buffer energy when a ship docks. However, in the method illustrated in FIG. 1, not only is it extremely time-consuming to mold the block body 1, but also the wall thickness of the block body itself is relatively thin, so the increase in the buffering capacity due to the hollow portion 2 is small. (See characteristic curve c in Figure 4). In addition, in recent years, the method illustrated in FIG. 2 has been developed in which the block body 1 is placed in advance on a temporary fixing member such as a template 4, and the block body 1 is placed in advance when pouring concrete when constructing a wharf.
Due to the fact that a construction method in which the hollow portion 2' is fixed via the temporary attachment member is adopted, considerable difficulty is involved in forming the hollow portion 2'.

(b) Purpose of the invention The main purpose of the invention is to provide a rubber cushioning material for quay corner corners, which can eliminate the above-mentioned inconveniences observed in conventional rubber cushioning materials for quay corner corners, and which has excellent ease of forming a cushion layer. The aim is to provide materials.

Another main objective of the present invention is to find a new structure for a rubber cushioning material that can contribute to improving the impact energy absorption performance when a ship docks and reducing the number of man-hours in the molding process.

C. Structure of the invention The present invention is for a quay corner, in which a cushion layer 5 made of a porous rubber elastic body is formed at the inner corner of a thick rubber cushioning material 1 having an inverted L-shaped cross section. The gist is a rubber cushioning material c.

D Example FIG. 3 is a cross-sectional view of the rubber cushioning material c for quay corners according to the present invention. Alternatively, a cushion layer 5 made of a soft elastic material such as plastic foam is glued. The rubber cushioning material c is attached to a fixing member 5 such as an anchor bolt to the concrete casting template 4.
After fixing it to the board, concrete 6 is poured and it is firmly fixed to the corner part of the quay 8.

The wall thickness of the rubber cushioning material c for the quay corner can be freely selected as long as the cushion layer 5 is formed at the inner corner.
Pressure-receiving portion 7 that prevents breakage when the bow of the ship collides and that receives the tightening pressure of anchor bolt 5
In order to keep deformation to a minimum, it is preferable to ensure a wall thickness of 20 mm or more, more preferably 25 mm or more.

The rubber cushioning material c having such a wall thickness may have, for example, a drainage groove (not shown) formed in the horizontal portion of its upper surface to function as a member to prevent cargo handling workers from slipping and falling.

E. Effects of the invention As is clear from the above explanation, the present invention provides a rubber cushioning material for quay corner corners that is compatible with the current cushioning material fixing method or quay wall construction method and that can exhibit practically sufficient buffering performance. provide. According to the present invention, the cushioning material can be easily installed, and the inside of the corner of the cushioning material, which is frequently subjected to impact when a ship berths, can be placed inside the corner of the cushioning material, in particular the one shown in Fig. 2 (its performance (See characteristic curve b in FIG. 4), it is possible to form a large cushion layer with significantly improved impact energy absorption performance (see characteristic curve a in FIG. 4).

That is, the present invention can be significantly effective in improving the performance of cushioning materials by providing a means for preventing damage to quay structures, the bows of ships, and the like.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of conventional rubber cushioning materials for quay corner corners, and FIG. 3 is a cross-sectional view illustrating the structure of the rubber cushioning material for quay corner corners according to the present invention. FIG. 4 is a load-deformation diagram illustrating the buffer characteristics. 1...Rubber cushioning material, 5...Cushion layer.

Claims (1)

[Scope of utility model registration request] A rubber cushioning material for a corner of a quay, which is formed by forming a cushion layer made of a porous rubber elastic body at the inner corner of a thick rubber cushioning material having an inverted L-shaped cross section.