JPS5930025Y2 - fender - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fender, and more particularly to a fender having a structure suitable for berthing and offshore berthing of medium and small vessels.

In the first place, fender materials suitable for berthing and offshore berthing of small and medium-sized vessels must not only have sufficient cushioning performance, but also be compact and lightweight, and must also be compatible with the size of the ship. It would be desirable to be able to adjust its damping capacity or impact energy absorption capacity so that an adapted shock absorption capacity is obtained.

However, in the past, this type of fender material was made by polymerizing one or more old tires, or in order to improve the cushioning performance, crushed rubber scraps such as waste tires and soft polyethylene foam were added to the tires. Fenders filled with cushioning materials made of materials such as fenders are used singly or in multiple layers.These conventional fenders not only do not provide uniform cushioning performance, but also generally lack energy absorption capacity. is low, and furthermore, its energy absorption capacity cannot be adjusted.

Therefore, when it is necessary to increase the buffering capacity, it is unavoidable to increase the number of layers of fender material, which increases the amount of protrusion from the quay, etc., causing sagging, or when coming alongside diagonally. , the laminated fenders may be abnormally displaced and not only cannot provide the original buffering function, but may also be damaged.

As mentioned above, with conventional fenders, it is not possible to adjust the buffering capacity of the fender itself, so in order to accommodate ships of various flammability, the conventional fenders inevitably become larger, resulting in increased weight and cost. At present, there are many problems that need to be resolved, such as the rising cost of living.

The present invention was made in view of the above-mentioned current situation, and it is an object of the present invention to provide an extremely effective and suitable fender that solves all of the above-mentioned problems.

The unique feature is that a flexible tube with a reinforcing layer is inserted inside the tire, and an appropriate amount of air is injected into this tube to improve air elasticity and the rubber elasticity of the tire tread. In addition to obtaining sufficient shock-absorbing performance by utilizing the flexible tube, the desired shock-absorbing capacity can be easily obtained by adjusting the pressure within the flexible tube.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The fender according to the present invention will be described below with reference to the drawings.

This fender material El of each example shown in FIGS. 1 to 6.

E2 and E3 are a fender unit 1 consisting of a tire 2 and a flexible tube 3 with a reinforcing layer inside the tire 2 to which an air injection valve 5 is attached, either singly or in plural. It is made up of.

First, a first embodiment shown in FIGS. 1 and 2 will be described in detail. The fender E1 of this embodiment is an embodiment in which the fender of the present invention is fixed to a quay.

In this embodiment, the tire 2 used was a used truck/bus tire 1000-20.

The reinforcing layer-containing flexible tube 3 formed in a donut shape is inserted into the cavity 2a of the tire 2.

The flexible tube 3 with a reinforcing layer is composed of an airtight layer 3a that prevents air leakage and a reinforcing layer 3b.The airtight layer 3a is made of a material with low gas permeability, such as butyl rubber, acrylonitrile/butadiene rubber. (NBR) or the like is preferable.

However, when considering the cut resistance of the tube 3, a certain degree of tube thickness is required, so almost any rubber material, synthetic resin material or elastomer material having rubber elasticity can be used.

Further, the reinforcing layer 3b has a bias structure of a plurality of sudare-woven cord layers, and these cord layers have a cord angle of 50 to 60 with respect to the inner peripheral line of the tube 3, considering the elongation and pressure resistance of the tube 3. It is preferable that they intersect with each other within a range of 100° to 200°. Reference numeral 6 in the figure is a stopper, which is detachably attached to the mounting plate 7 to the quay with bolts or the like at intervals corresponding to the bead portion of the tire 2. With this fastener 6, a bead portion corresponding to the rim of a tire wheel of the fender unit 1 can be removably attached to the mounting plate 7.

Further, anchor bolt holes are arranged at appropriate intervals around the mounting plate 7, and the heads of anchor bolts buried in the quay wall 9 are inserted into these anchor bolt holes and fastened with bolts 8. Thus, the mounting plate 7 to which the fender unit 1 is attached can be mounted on the quay 9.

Next, a second embodiment shown in FIGS. 3 and 4 is an embodiment in which the fender of the present invention is suspended from a quay or a ship's side.

In this case, only one fender unit may be used, but in this embodiment, a case will be described in which two fender units 1 are used in a polymerized manner.

As shown in the figure, the fender E2 in this embodiment is constructed by removably attaching the fender units 1 to both sides of a mounting plate 10 that can be hung from a quay or ship side. .

The mounting plate 10 has a mounting part 10' projecting from the upper part to which the hanging mooring rope 14 is attached, and on both sides, similarly to the mounting plate 7 in the first embodiment, the fasteners 6 are attached. , a bead portion corresponding to the rim of a tire wheel of each fender unit 1 is detachably attached.

Reference numeral 11 denotes a cover play I. In order to prevent debris, etc. floating on the water surface from entering the fender units 1 to 1, the stopper is attached to cover the bead portion of the fender unit. 6, it is detachably attached.

This cover plate 11 is made of a metal plate having sufficient strength to withstand the load when coming alongside, or an FR reinforced with fibers, etc.
It is constructed from a plastic plate such as P, and its outer surface is lined with rubber or the like to prevent damage when coming alongside and to protect against corrosion.

Further, this cover plate 11 is provided with a valve 13 for injecting and exhausting compressed air.
3 and each valve 5 of each fender unit are connected by a flexible hose 12.

The fender E2 in this embodiment is constructed by polymerizing two fender units via the mounting plate 10 as described above, so the Although the shock absorption capacity can be doubled compared to the fender E1 of Example 1, the reaction force is equivalent to that of one fender unit. It is possible to obtain an excellent fender material that absorbs a relatively high amount of energy.

In this embodiment, the mounting plate 10 and the cover plate 11 may be made of a flexible rubber plate or the like that has no reinforcing properties at all.

In this case, as long as the fender unit 1 is prevented from falling off the mounting plate 10 due to the impact when coming alongside, a very safe fender can be obtained.

Next, the fender E3 shown in FIGS. 5 and 6 shows the third embodiment of the present invention, and in this embodiment,
As shown in the figure, a fender unit 1 is a fender unit in which a plurality of fender units 1 are connected in a plane with shackles 15 etc., and the whole is suspended from a quay or a ship's hull by the mooring cable 14 such as a chain or rope. It is.

The fender E3 of this embodiment can increase the contact area when coming aboard, so it can be used even when the tide level fluctuates, such as during low tide or high tide.As mentioned above, it is composed of a collection of fender units I It is easy to repair and replace.

As mentioned above, in this invention, a flexible tube with a reinforcing layer and an air injection valve attached is inserted inside the tire, and an appropriate amount of air is pressurized into this tube, which improves the elasticity of the air. Sufficient shock-absorbing performance can be obtained by utilizing the rubber elasticity of the tire tread.

In addition, since the pressure inside the flexible tube can be adjusted by the air injection valve, it is possible to easily obtain a buffering performance that is suitable for the size of the ship alongside, thereby significantly improving safety.

Therefore, compared to conventional fenders, the number of fenders installed can be reduced, making it smaller and lighter, which is not only economical, but also allows the fender to be installed in a number of layers, unlike conventional fenders. It also prevents abnormal displacement when coming alongside diagonally, making it durable for long-term use.

Furthermore, since the flexible tube is reinforced with a reinforcing layer, it can significantly improve the durability of the fender, while maintaining pressure resistance and having excellent impact resistance with low reaction force and high energy suction force. A fender having buffering performance can be provided.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; Fig. 1 is a sectional view of the first embodiment, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a sectional view of the second embodiment. FIG. 4 is a view taken along the line B--B in FIG. 3, and FIGS. 5 and 6 are front views of the third embodiment. 1... Fender unit, 2... Tire, 3... Flexible tube with reinforcing layer, 5...
...Air injection valve.

Claims (1)

[Scope of utility model registration request] A fender comprising a fender unit consisting of a tire and a flexible tube with a reinforcing layer inside the tire to which an air injection valve is attached, either singly or by connecting a plurality of fender units. Material.