JPH0414493Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to anti-impact equipment materials such as fencing materials, which are one type of port equipment.

[Conventional technology and its problems]

Barrier materials used as anti-shock equipment for ports are equipment that prevents impact and frictional forces from acting between the ship and the mooring shore when the ship approaches the berth or is shaken by waves or wind while moored. For example, No. 2326 of the Port Structure Design Standards (published in June 1972 by the Japan Ports and Harbors Association)
There are various types as shown on the page.

In the past, they were made of wood, but now many are made of rubber, made of old tires, or are large, drum-shaped or pillow-shaped, and are installed side by side on quays, etc. . There are also steel ones available.

However, all conventional fencing materials suffer from significant rusting, deterioration, and damage when immersed in seawater for long periods of time, and their durability is only four to five years. In addition, they are generally heavy and require a great deal of effort to construct.
Moreover, the cost of parts was high.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
It evenly absorbs the impact when a ship approaches the shore,
Another object of the present invention is to provide a port impact protection equipment material that has high compressive strength during impact, is highly durable against immersion in seawater, is lightweight, can be manufactured at low cost, is easy to install, and has a good appearance. .

[Means for solving problems]

In order to achieve the above object, the present invention is a hollow flat plate made of blow-molded synthetic resin that is durable against immersion in seawater, and at least one of the front and back plates constituting the hollow flat plate. The gist is that a reinforcing rib that forms a groove is erected on the plate, and the deepest part of the rib that forms the groove is joined to the back side of the other plate.

[Effect]

According to the present invention, the reinforcing ribs provided on at least one of the front and back plates of the hollow flat plate form a concave groove, and have a special shape in which the deepest part is joined to the back side of the other plate. It is a rib. By providing such ribs, the front plate and the back plate are connected to each other by the ribs, and a large number of small sections are formed that are closed by the ribs, the front plate, and the back plate, resulting in high compressive strength. In addition, the deepest part is joined to the other plate to form a double plate structure, which is rich in elasticity and maintains high strength.

When subjected to an impact, the space between the closed small sections becomes an open groove and tends to expand.
In addition, the part of the double plate structure that is the deepest part of this rib serves as a core to spread the opening of the groove, and it becomes easy to bend so as to return the spread of the opening, and the whole deforms and absorbs the impact energy. absorb effectively. In this way, by arranging the ribs, the compressive strength when receiving an impact can be distributed evenly.

In addition, since it is manufactured from synthetic resin such as polyolefin, it is durable and resistant to deterioration even in a seawater atmosphere, and since it is hollow, it is lightweight and easy to handle, and installation is simple.

Furthermore, molding can be done inexpensively by blow molding etc.
Furthermore, it can be colored to improve its aesthetic appearance.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a front view showing one embodiment of the impact protection equipment material of the present invention, Fig. 2 is a rear view of the same, and Fig. 3 is a sectional view taken along the line A-A of Fig. 1. It is a hollow flat plate that is used as a material for impact-proof equipment, and synthetic resins that are relatively durable against immersion in seawater, such as polyolefin or polyolefin-based compositions, are suitable for this purpose. Conceivable are polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polypropylene and mixtures of these other materials. It may also be a filler contaminant.

The hollow flat plate body 1 was manufactured by blow molding to have a closed cross-sectional structure, and the surface plate 2 had a smooth surface, and bolt holes 3 were formed as appropriate. Further, a rib stand is provided on the back side of the back plate 4 in which reinforcing ribs 5 are arranged to bulge out and form grooves.

This reinforcing rib 5 was formed by joining the deepest part of the groove to the back side of the surface plate 2.

The ribs 5 are formed during the blow molding process, and are required to be arranged so that the compressive strength at the time of impact can be evenly distributed. In this embodiment, ribs 5 that are radial toward the center and ribs that are parallel to the edges are mixed, but in another embodiment, ribs 5 that are all parallel may be provided as shown in FIG.

In addition, the wall thickness of the front plate 2, back plate 4, etc. is 4 to 5 mm.
As mentioned above, the deepest part of the rib 5 is bonded to the back side of the surface plate 2, so the strength is high, and in some cases, the rib 5 may also be provided on the surface plate 2.

Next, to explain how to use it, in order to install it on a seawall as a barrier material etc., anchor bolts 6 are planted in the seawall concrete 7 using a hardening agent as shown in Figs. The anti-shock equipment material of the present invention is attached to the side surface of the concrete revetment 7 using bolts 6. They are arranged in several rows in the vertical direction and in tandem along the longitudinal direction of the concrete revetment 7, and when the ship 8 approaches the shore, this acts as a buffer material to prevent damage.

In addition, 9 in the figure is a packing washer using neoprene rubber, and has the role of preventing corrosion of the bolt 6. Moreover, if the synthetic resin forming the hollow flat plate body 1 is colored black or gray so that dirt on the molded product is not noticeable, the aesthetic appearance will be improved.

Figures 8 and 9 show the case where it is installed on a floating pier 10, and since the impact protection equipment material of the present invention is hollow and has buoyancy itself, it is useful for stabilizing the floating pier 10. If the impact protection equipment material of the present invention is laid in the form of a panel on the slab surface of the pier 10, it can be used as a part of the constituent members of the pier 10, and construction can be carried out in a short period of time. Especially in tourist areas, they can be easily installed and removed each season.

Figures 10 to 13 show the case where the impact protection equipment of the present invention is installed on the receiving pier 11, and the parallel body length of the vessel 8 and the height between the dolphins do not match, so the erected air barrier material 12 is used to safely berth. When carrying out cargo handling, two pieces of the impact protection equipment of the present invention were stacked and arranged in order to ensure clearance, and the above-mentioned air barrier material 12 was attached thereon.

In the figure, reference numeral 14 denotes a channel member that extends horizontally to the pedestal 11a of the pier 11, and the anti-impact equipment of the present invention is bolted to this channel member. In addition, a packing washer 9 made of neopyrene rubber is arranged, and a bolt through hole 3 is provided.
was filled with rubber 13. In the figure, 15 indicates a docked dolphin.

In addition, all of the anti-collision equipment materials of this invention are suitable for ships with 8
When the vessel comes ashore and receives an impact, the groove formed by the reinforcing ribs 5 of the hollow flat plate body 1 is deformed as a whole so that the opening widens with the deepest part of the double plate structure as the core. Absorbs impact energy effectively and evenly.

Furthermore, since the rib 5 has a double structure in which the deepest part is joined to the back side of the surface plate 2, the compressive strength is also high.

[Effect of idea]

As described above, when a ship is hit by a ship berthing, the inventive port impact protection equipment absorbs the impact evenly by expanding the groove-forming portion of the hollow flat plate. Furthermore, since it has a double structure in which the deepest part of the rib is joined to the back side of the surface plate, it has a high compressive strength, so it is extremely excellent in terms of weather resistance and deterioration resistance.

Furthermore, it is durable against immersion in seawater, and its lifespan can be more than doubled compared to conventional products. In addition, since it is a hollow body, it is lightweight and easy to handle, and buoyancy can be used.Furthermore, since it is panel-shaped, various variations can be selected for stacking and arranging, and installation work and repair can be easily performed. Moreover, the production cost is also low due to blow molding.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of the present invention's impact protection equipment for ports, Fig. 2 is a rear view of the same, Fig. 3 is a sectional view taken along the line A-A in Fig. 1, and Fig. 4 is another example. 5 is a cross-sectional view of the main part showing an example of use in a seawall, FIG. 6 is a plan view of the whole, FIG. 7 is a sectional view taken along line B-B in FIG. Figure 8 is a plan view showing an example of use on a floating pier, Figure 9 is a sectional view taken along the line CC in Figure 8,
Fig. 10 is a plan view showing an example of use on a cargo handling pier, Fig. 11 is a sectional view taken along the line D-D in Fig. 10, Fig. 12 is a front view of the main parts of the same, and Fig. 13 is a bolt attachment part of the same. FIG. DESCRIPTION OF SYMBOLS 1... Hollow flat plate body, 2... Top plate, 3... Bolt holes, 4... Back plate, 5... Rib, 6...
... Anchor bolt, 7 ... Seawall concrete, 8
... Ship, 9 ... Packing washer, 10 ... Floating pier, 11 ... Receiving pier, 11a ... Pillar, 12
...Erection air barrier material, 13...Rubber, 14...
Channel members, 15...Dolphin docking.

Claims (1)

[Scope of utility model registration request] A hollow flat plate made of blow-molded synthetic resin that is durable against immersion in seawater, and reinforced by forming grooves on at least one of the front and back plates that make up the hollow flat plate. An anti-shock equipment material for ports, characterized in that the ribs are erected, and the deepest part of the ribs forming the grooves are joined to the back side of the other plate.