JP2002012148A - Shock absorber using powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce breakage by eliminating shock making use of energy absorption of particles made of brittle material when impact is applied to an outer hull of a ship, the head part of a rolling stock, and heavy substance such as a buffer stop of a quay or the rolling stock. SOLUTION: This shock absorber is provided with a box, and a particle holding part mounted in the box. A collision surface of the box is coated with a non-corrosive Teflon sheet, and particles made of brittle material such as stone, glass, concrete, coal ash, sludge and the like are accommodated in the box. When a small impact force is applied to the box due to a collision, the impact force is absorbed by frictional collision among the particles. In the case of larger impact force, the particles are collapsed to eliminate the impact force so that breakage is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impact buffering device for reducing impact and reducing damage when a heavy object such as a ship or a railway vehicle collides. Further, the present invention relates to an impact damping device installed on the outer shell of a ship, the head of a railway vehicle, a quay colliding with these heavy objects, or a bollard of a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, a relatively lightweight article has been transported by protecting it with an impact material corresponding to the shape and dimensions of the article and storing it in a transport container. A foaming material as disclosed in JP-A-11-49241 is used for the transport container. The shock absorbing device using these foamable materials protects articles from impact during transportation by using the fluidity of particles made of the foamable material.

[0003] Japanese Patent Application Laid-Open Nos. Hei 7-329881 and Hei 11-301 disclose shock absorbers for the collision of heavy objects.
No. 586 discloses an impact buffer.

[0004] The shock absorber described in Japanese Patent Application Laid-Open No. 7-329881 has a flexible hull structure at the bow of a nuclear or LNG ship, thereby absorbing the destructive energy at the time of the collision at the bow and causing the collision. In order to reduce damage.

[0005] The shock absorbing device described in Japanese Patent Application Laid-Open No. H11-301586 is provided with a plurality of airbag devices in which compressed air is heavily applied to the outer shell of a small boat or boat, thereby providing collision with another ship or a pier or quay. It absorbs the impact force when berthing with the shore and protects the occupants and the hull from damage.

[0006]

SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. H11-4924
In order to apply a cushioning material using a foaming material as shown in No. 1 to a cushioning material for heavy loads of ships and railway vehicles, it is necessary to form the foaming material itself rigidly. There is a limit in hardness. This problem can be solved by forming the foamable material thicker, but in this case, the cushioning material itself becomes large.

If the hull structure at the bow of a ship is made flexible as shown in Japanese Patent Application Laid-Open No. 7-329881, the strength of the ship is reduced, and a reinforcing structure for reinforcing the reduced strength is required separately. Will be.

Further, when an airbag device as disclosed in Japanese Patent Application Laid-Open No. 11-301586 is mounted on the outer surface of the structure of a heavy object such as a ship or a railroad vehicle to obtain a shock absorbing effect at the time of a collision, a huge airbag is required. A bag device is required.

In order to solve the above-mentioned problems, the present invention provides an impact buffering device which can be easily installed on the outer shell of a ship or a leading portion of a railway vehicle, and also on a quay colliding with these heavy objects or a bollard of a railway vehicle. The purpose is to do.

[0010]

In order to achieve the above-mentioned object, the present invention provides a shock absorbing device comprising a box and a shock absorbing material housed inside the box, wherein the shock absorbing device comprises: The cushioning material is particles made of a brittle material, and a particle holding plate is provided inside the box, and when an impact is applied to the box, the particles are crushed and absorb the impact force of the box. It is characterized by the following. According to the present invention, when the box receives an impact, the impact can be absorbed by frictional collision between particles. If the impact force is large,
The crushing of the particles can reduce the impact force and reduce the breakage of heavy objects.

Further, the shock absorbing device according to the present invention is characterized in that the box is covered with a resin sheet having a low coefficient of friction. ADVANTAGE OF THE INVENTION According to this invention, the damage of a collision object at the time of a collision can be reduced.

The shock absorbing device according to the present invention is a shock absorbing device comprising a box and a shock absorbing material housed inside the box, wherein a piston is inserted through the inside of the box, Is connected to a collision receiving portion provided outside the box via a connecting portion, and particles made of a brittle material are accommodated inside the box, and the particles are applied when an impact force is applied to the collision receiving portion. It is characterized by crushing and absorbing the impact force of the box. According to the present invention, when the box receives a small impact force, by frictional collision between particles,
Can absorb impact force. When a large impact force is applied, the particles are crushed, so that the impact force is alleviated and breakage can be reduced.

The particles made of a brittle material contained in the shock absorbing device of the present invention are made of stone, glass, concrete, coal ash or sludge, or a mixture of these as appropriate. Waste glass or waste concrete may be used.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments with reference to the drawings. FIG. 1 is a sectional view showing an impact buffer according to a first embodiment of the present invention.
The shock absorbing device in the present embodiment includes a box 1 and a V-shaped particle holding plate 2 provided inside the box 1, and particles 3 are accommodated inside the box. The shock absorbing device of the present invention is installed on a heavy object, preferably on the outer surface of a ship, the head of a railway vehicle, a quay, or a bollard of a railway vehicle.

The particles 3 are made of a brittle material. The particles made of a brittle material include stone, glass, concrete, coal ash, sludge, and the like, and waste glass and waste concrete may be used. Further, the particles made of a single brittle material may be appropriately mixed and stored in the shock absorbing device. It is desirable that the brittle material be easily and inexpensively available. The particles 3 are not so densely arranged and are arranged so as to secure a space in which the particles 3 can move. Further, the size of the particles is preferably about 10 to 15 mm.

The particle holding plate 2 provided inside the box prevents the particles 3 from sinking to the lower part of the box due to the vibration of the box itself. In this embodiment, the V-shaped particle holding plate 2 is used. However, the present invention is not limited to this. If the shape is such that the settling of the particles 3 can be prevented and the deformation of the box body is not hindered,
An inverted V-shaped or corrugated particle holding plate 2 may be provided. The Teflon sheet 4, which is a non-corrosive material, is provided on the collision surface of the box, so that damage to the collision object at the time of collision can be reduced.

FIG. 2 is a view showing a state in which the shock absorbing device in the first embodiment is deformed by an impact and the particles 3 contained in the inside of the box are crushed. When an impact force is applied to the box from the outer surface (a) of the box as shown in FIG. 2A, the box is deformed by the V-shaped particle holding plate 2 as shown in FIG.
Further, the particles 3 are crushed and absorb the impact force.

FIG. 3 is a sectional view showing a part of the shock absorbing device according to the second embodiment of the present invention. As shown in FIG.
A box 1 containing the particles 3, a piston 5 inserted into the box 1, a connecting portion 6 connected to the piston 5, and a collision provided outside the box via the connecting portion 6. It is composed of a receiving plate 7. The side surface (b) 9 of the box body is installed so as to be in contact with a heavy object, preferably a ship outer shell, the head of a railway vehicle, a quay, or a bogie of a railway vehicle. The particles 3 are arranged inside the box 1 so as to be able to absorb an impact force transmitted in the direction of the box side surface (b) 9 via the shock receiving plate 7, the connecting portion 6 and the piston 5. Therefore, when an impact force is applied to the collision receiving plate 7, the collision energy is transmitted to the particles 3 inside the box via the connecting portion 6 and the piston 5. The impact energy can be evenly dissipated by the piston 5. If the impact force is large, the particles crush and absorb the impact energy.

FIG. 4 is a schematic diagram in which the shock absorbing device in the first embodiment is applied to a railway vehicle. As shown in FIG.
The shock absorbing device 10 is installed at the head of the railway vehicle 11,
Buffers the shock when a railway vehicle receives an impact.

FIG. 5 is a schematic diagram in which the shock absorbing device according to the second embodiment is applied to a bogie of a railway vehicle. As shown in FIG. 5, the shock absorbing device 10 is installed in a bogie 12 of a railway vehicle. When the railway vehicle stops, it is possible to prevent the leading portion of the railway vehicle from contacting the bollard 12 and prevent the railway vehicle from being damaged.

[0021]

The shock absorbing device according to the present invention can be used for heavy objects,
In particular, it can be easily installed on the hull of the hull, the head of a railway vehicle, the quay, or the bollard of a railway vehicle, and a brittle material that can be obtained easily and inexpensively as a cushioning material can be used. In addition, recycled materials such as waste glass and waste concrete can be used as brittle materials. According to the present invention, particles made of a brittle material that can be obtained easily and inexpensively can be used as an impact material, and the impact force larger than that of a normal foamable material can be buffered. Further, according to the present invention, when subjected to a small impact force,
The gas between the particles is compressed, and due to frictional collision of the particles,
The impact force can be absorbed without plastic deformation.
When a large impact force is received, the particles are crushed to reduce the impact force and reduce breakage.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment according to the present invention.

FIG. 2 is a cross-sectional view showing a shock absorbing state at the time of a collision in the first embodiment.

FIG. 3 is a sectional view showing a second embodiment according to the present invention.

FIG. 4 is a schematic diagram in which the first embodiment of the present invention is applied to a leading vehicle of a railway vehicle.

FIG. 5 is a schematic diagram in which the second embodiment of the present invention is applied to a bogie of a railway vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 2 Particle holding plate 3 Particle 4 Teflon sheet 5 Piston 6 Connecting part 7 Collision receiving plate 8 Box side (a) 9 Box side (b) 10 Shock absorber 11 Railway vehicle 12 Car stop 13 Rail

Claims (4)

[Claims] 1. An impact damping device comprising a box and a shock absorbing material housed inside the box, wherein the shock absorbing material is particles made of a brittle material, and a particle holding portion is provided inside the box. The shock absorbing device using a granular material, wherein, when an impact is applied to the box, the particles are crushed and absorb an impact force. 2. The shock absorber according to claim 1, wherein a collision surface of the box is covered with a resin sheet having a low friction coefficient. 3. A shock absorber comprising a box and a cushioning material accommodated in the box, wherein a piston is inserted into the box, and the piston is connected to the box via a connecting portion. It is connected to a collision receiving portion provided outside, and particles made of a brittle material are contained inside the box, and when an impact force is applied to the collision receiving portion, the particles are crushed and absorb the impact force An impact damping device using a granular material characterized by the above-mentioned. 4. The shock-absorbing device using granules according to claim 1, wherein said particles are any one of stone, glass, concrete, coal ash, and sludge or a mixture thereof. .