JP6264764B2 - Shock absorbing bag body and protective fence using the same - Google Patents

Description

  The present invention relates to an impact-absorbing bag body that absorbs kinetic energy of a collision object that has collided, and a protective fence using the same.

  2. Description of the Related Art Conventionally, for example, sandbags filled with earth and sand are placed side by side in a cloth bag so as to function as a protective fence in places where falling objects (collision target objects) such as falling rocks, landslides, and avalanches are present.

  Such sandbags are filled with earth and sand in a cloth bag, and the filling port is only closed with a binding tool such as a string, so even if a fallen object collides, the buffering effect is not sufficient, and the buffering effect There is a request to increase

  Also, instead of such earth and sand, there is also a protective structure that can obtain a uniform buffering effect by using old tire grinding chips or polystyrene foam grinding chips sealed in a cloth bag such as a cloth bag or rubber bag. It has been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-221720 (paragraph 0016 and FIG. 4)

  In the thing of the said patent document 1, since the ground tire crushing chip | tip and the foaming polystyrene crushing chip are sealed and used in the cloth bag instead of earth and sand, the crushing chip | tip of the old tire and the crushing foam foam are manufactured in large quantities. There is a need.

  The inventor can enhance the cushioning effect by using a structure in which a plate-like shock absorber made of expanded polystyrene is housed in a cloth bag without using such a pulverized chip, and by devising the structure of the cloth bag. The present invention was made based on the above.

Therefore, the present invention provides an impact-absorbing bag body that enhances the buffering effect and can efficiently absorb the kinetic energy of a collision object that is a fallen object due to falling rocks, landslides, snowbreaks, etc., and a protective fence using the same. The purpose is to do.

The invention of claim 1 is an impact-absorbing bag body that absorbs the kinetic energy of a collision object that is a falling object such as a falling rock, and a plate-like impact absorbing material made of foamed polystyrene is housed in a cloth bag. And the cloth bag includes a stitched portion that is partly brought into contact with each other on the outer side surface or the inner side surface and is sewn with a suture-like material so as to maintain the contact state, and corresponds to the shock absorbing material. The suture-like material is inferior in strength to the weaving yarn that weaves the cloth bag so that the cloth bag is cut prior to breaking when the collision object collides. To do. Here, the suture material is a material capable of sewing a cloth bag, and a thread material such as a thread or string is used.

  In this way, when a collision object (for example, a falling object such as a falling rock) collides, the collision object deforms or destroys the shock absorber in the cloth bag by the kinetic energy of the collision object at that time. To do. The kinetic energy of the collision object is consumed to deform and destroy the shock absorber. Further, due to deformation or breakage of the shock absorbing material, the shock absorbing material tries to spread, and the cloth bag is returned to the bag shape before suturing having no stitched portion and a large internal volume. By trying to return the cloth bag to the original bag shape, the suture material forming the stitched portion is cut, and the kinetic energy of the collision object is consumed to cut the suture material. . Thus, the consumption of the kinetic energy of the collision object is performed not only by the deformation of the shock absorber (foamed polystyrene) but also by cutting the suture-like material, so that the collision object does not move to the periphery due to the collision, It stays near the place where it collided with the shock absorber.

Further , since the suture material is cut before the cloth bag is broken, the kinetic energy of the collision target can be absorbed without breaking the cloth bag.

According to a second aspect of the present invention, it is desirable that a surface other than the surface on which the stitched portion is formed be a portion that causes the collision object to collide. Here, the stitched portion may be formed in a part or a plurality of portions on the side corresponding to one surface of the shock absorber, or may be formed over the entire circumference.

  In this way, the collision object is caused to collide with a portion where there is no stitching, so that the situation where the suture material is cut before the deformation of the shock absorbing material does not occur, and the energy generated by the deformation of the shock absorbing material does not occur. It is possible to achieve both absorption and energy absorption by cutting the suture material. Effective energy absorption using the shock absorbing material and the suture material can be realized.

According to a third aspect of the present invention, the cloth bag is provided with another cloth bag on the outside, and the other cloth bag is also brought into contact with each other by overlapping a part of the outer surface or the inner surface so as to maintain the contact state. Can be provided with a stitched portion stitched with a suture-like material.

  In this way, the total length of the stitched portion (corresponding to the total length of the suture-like material that absorbs energy) can be increased, and the consumption of kinetic energy can be increased.

A fourth aspect of the present invention is a protective fence that arranges a plurality of the shock absorbing bag bodies according to any one of the first to third aspects and absorbs the kinetic energy of a collision target such as a falling rock, and the shock absorbing bag. The bag bodies are coupled by coupling means so as to maintain a fixed positional relationship without being separated from each other.

  In this way, in each of the plurality of impact-absorbing bag bodies that collide with the object to be collided, the shock-absorbing material in the cloth bag is greatly deformed or destroyed, so that the whole including the cloth bag and the shock-absorbing material. The suture material is cut by the deformation. By such deformation of the shock absorbing material or cutting of the suture material, the kinetic energy of the collision target is absorbed, and the protective function of the protective fence for receiving the collision target is exhibited.

The invention of claim 5 is a protective fence for arranging the plurality of shock absorbing bag bodies according to any one of claims 1 to 3 in parallel and absorbing the kinetic energy of a collision object such as falling rocks, The shock-absorbing bag body is a plurality of units that are united and united with a binding tool for each plurality.

  If it does in this way, kinetic energy will be disperse | distributed and absorbed by the some shock absorption bag body which comprises a unit, and efficient energy absorption will be implement | achieved.

  Since the present invention is configured as described above, a collision target object (for example, a falling object such as a falling rock) collides with the collision target object by deformation (or destruction) of the shock absorber and cutting of the suture-like material. It becomes possible to efficiently absorb the kinetic energy of the object, and the collision object can be stopped near the shock absorbing bag body.

(A) (b) is the schematic front view and schematic plan view which respectively show one embodiment of the impact-absorbing bag body of this invention. (A)-(d) is explanatory drawing of the principle of shock absorption, respectively. It is explanatory drawing which shows one Embodiment of the protection fence using the said shock absorption bag body. It is explanatory drawing which shows other embodiment of the protection fence using the said shock-absorbing bag body. (A) and (b) are the schematic front views and schematic plan views which show other embodiment about an impact-absorbing bag body, respectively. It is explanatory drawing of another embodiment about an impact-absorbing bag body. It is explanatory drawing of another embodiment about an impact-absorbing bag body. It is explanatory drawing of another embodiment about an impact-absorbing bag body.

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

  FIGS. 1A and 1B are a schematic front view and a schematic plan view showing an embodiment of the shock absorbing bag body of the present invention.

  As shown in FIGS. 1 (a) and 1 (b), a shock-absorbing bag body 1 includes a plate-shaped shock absorbing material 2 (for example, a rectangular plate of polystyrene foam) and a vertically long and cylindrical cloth bag 3 (for example, hemp). It is housed in a natural fiber or a synthetic fiber such as polyethylene) and has a substantially rectangular solid shape as a whole.

  The cloth bag 3 has a part of the outer surface 3a overlapped and brought into contact with each other, and the periphery of the contact part is maintained by the suture 4 as a suture-like material so as to maintain a contact state between the parts of the outer surface 3a. It is sutured. In addition, in embodiment shown in FIG. 1, although it is set as the structure which has two linear stitch parts M1 and M2 extended along the left-right side surface, the extending direction and number are not restrict | limited in particular. Further, a part of the outer side surface 3a is overlapped and brought into contact, but a part of the inner side surface may be overlapped and brought into contact with each other to be sewn. The stitched portions M1 and M2 do not need to be continuous, may be intermittent or partial, and need not be one row, but may be a plurality of rows.

  The shock absorbing material 2 is accommodated in the cloth bag 3 in a partially stitched state through the accommodation opening. Although the storage opening of the cloth bag 3 is not specifically shown after the shock absorbing material 2 is stored, it can be closed by using a binding tool such as a string or stitched in the same manner as a well-known sandbag. The shock absorbing bag body 1 in which the absorbent material 2 is confined inside the cloth bag 3 is obtained. In this state, it becomes a substantially rectangular parallelepiped shape. A gap is hardly formed between the inner side surface of the cloth bag 3 and the outer side surface of the shock absorber 2.

  The outer surface other than the outer surfaces forming the two stitched portions M1 and M2 is a portion that causes the collision object to collide. As a result, the collision object directly collides with the stitched portions M1 and M2, and it is avoided that the suture thread 4 is cut by the collision before the shock absorber 2 is deformed or destroyed.

  The suture thread 4 is inferior in strength to the weaving thread that weaves the cloth bag 3, and is configured to be cut before the cloth bag 3 is torn. The cutting of the suture thread 4 also consumes the kinetic energy of the collision object when the collision object such as falling rock collides with the shock absorbing bag 1. Further, since the cloth bag 3 is not torn, the stored shock absorber 2 is not scattered around.

  According to the shock-absorbing bag body 1, the shock-absorbing material 2, which is a foamed polystyrene, is only housed in the cloth bag 3, so that it is lightweight and easy to handle. Then, as shown in FIG. 2A, the shock absorbing bag 1 is expected to fall (move) a fallen object S such as a falling rock on the outer surface where the stitched portion is not disposed. By installing in the direction, the fallen object S collides with the cloth bag 3, and a load can be applied in a direction substantially orthogonal to the surface as shown in FIG. 2 (b). At this time, since the shock absorber 2 is plate-shaped, it is possible to secure a large area of the portion that collides with the falling object S, which is advantageous in achieving shock absorption. Moreover, before the shock absorber 2 is deformed, the outer side surface excluding the stitched portion is placed in a direction in which a fallen object S such as a falling rock is expected to fall (moves). The suture 4 is prevented from being cut, and efficient kinetic energy absorption can be realized.

Due to this collision, before the suture thread 4 is cut, as shown in FIG. 2C, the shock absorber 2 is deformed in the cloth bag 3, and the kinetic energy (falling energy) of the falling object S at that time. Absorbing a part of it, the buffer effect is exhibited.
When the kinetic energy of the fallen object S is large, as shown in FIG. 2 (d), the shock absorber 2 in the cloth bag 3 is greatly deformed or destroyed and tries to spread. Try to return to the original shape before sewing. That is, the shock absorbing material 2 is greatly deformed or destroyed, and the cloth bag 3 is spread, and the outer side surfaces 3a and 3a that are in contact with each other by the suture 4 are moved away from each other. The suture 4 is gradually cut from the outside toward the center according to the degree of force to be moved, and the shape of the shock absorbing bag 1 (cloth bag 3) changes. By cutting the suture 4, energy absorption due to deformation / destruction of the shock absorbing material 2 and energy absorption due to the cutting of the suture 4 are combined, and a further buffering effect is exhibited. Thereby, the fallen object S is absorbed in the kinetic energy, stops near the shock absorbing bag body 1, and stays there without moving.

  In this way, the kinetic energy of the falling object S is absorbed not only by the deformation / destruction of the shock absorber 2 but also by cutting the suture 4 that sews the cloth bag 3, thereby greatly reducing the kinetic energy of the falling object S. Therefore, the further movement of the fallen object S to the periphery can be suppressed.

  On the other hand, when the kinetic energy is small, the fallen object S does not destroy the shock absorber 2 in the cloth bag 3, and only a small deformation occurs in the internal shock absorber 2. The fallen object S stops at a location near the shock absorbing bag 1.

  For example, as shown in FIG. 3, a plurality of shock absorbing bags 1 can be installed side by side under a cliff 11 along the road, and can be used as a protective fence for falling rocks, avalanches, collapsed earth and sand. The shock absorbing bag body 1 is supported by a support fence 12 so as not to move to the road side. In this case, a plurality of shock-absorbing bag bodies 1 are combined by a binding band (not shown) such as a restraining band and a restraining wire and integrated to form a unit comprising a plurality of shock-absorbing bag bodies. It can also be installed side by side. By setting it as a unit, kinetic energy will be disperse | distributed and absorbed by each bag 1 which comprises a unit, and efficient energy absorption will be implement | achieved. That is, energy absorption is realized by the cooperative action of the bags 1 constituting the unit. Moreover, when it does not move to the road side even if it does not use a support fence by integrating, a support measure can also be abbreviate | omitted.

  Further, the entire plurality of installed shock absorbing bag bodies 1 may be covered with a covering material such as a net, and each shock bag body 1 is coupled to the support fence 12 by a coupling means such as a wire or a band. Then, it may be integrated with the support fence 12. If they are connected by a connecting means such as a wire or a band, the shock-absorbing bag bodies 1 are not separated from each other and maintain a fixed positional relationship. The shock absorbing performance is ensured.

  In this case, the shock-absorbing bag body 1 is installed with the outer surface 3a excluding the stitched portions M1 and M2, that is, the outer surface where no stitched portion is provided, in the direction in which the collision object is expected to move. Is done. Thereby, when the collision object collides, the shock absorbing material 2 is greatly deformed or broken so as to open the stitched portions M1 and M2 in the cloth bag 3, and the suture 4 is cut. Therefore, even if the kinetic energy of the collision object is large, the kinetic energy of the collision object can be absorbed by cutting the suture 4. Here, since the outer surface 3a excluding the stitched portions M1 and M2 is installed in the direction in which the collision object is expected to move, shock absorption is achieved by direct collision with the collision object. This is to prevent the suture 4 from being cut without accompanying deformation of the material 2 and insufficient absorption of kinetic energy.

  As shown in FIG. 4, in a place where a tunnel 22 (passage 22 a) is provided adjacent to the cliff 21 below the cliff 21, a plurality of shock absorbing bag bodies are provided above the ceiling wall of the tunnel 22. 1 can be provided side by side so that the support fence 23 does not move outward from the upper surface of the tunnel, and can be used as a protective fence for the tunnel 22. In this case, if there is a fallen object such as falling rock, avalanche, or collapsed earth and sand, each shock absorbing bag body 1 absorbs the kinetic energy of the fallen object and softens the impact, so that the tunnel 22 is effectively damaged or destroyed. Can be prevented. In the case shown in FIG. 4, the shape of the shock absorbing material of the shock absorbing bag provided below the cliff 21 is changed according to the inclined shape of the cliff 21, and the cliff 21 is changed according to the inclined shape of the cliff 21. Can be installed without difficulty.

  The present invention is not limited to the above-described embodiment, and can be implemented with the following modifications.

  (i) The impact-absorbing bag body is not particularly limited with respect to the number of stitched portions and the portions where the stitched portions are provided, and stitched portions can be provided in the longitudinal direction of the rectangular parallelepiped (FIGS. 5A and 5B). ) Reference) It is also possible to provide an impact-absorbing bag having one stitched portion. Further, the size and number of the stitched portions can be appropriately changed depending on the installation location, the installation purpose, the size of the cloth bag, and the like. Furthermore, the shape of the shock absorbing material is not limited to a rectangular plate shape, but may be a polygonal plate shape or a circular plate shape.

  (ii) The plate-shaped shock absorbing material provided in the cloth bag does not have to be a single one. For example, as in the shock absorbing bag body 1A shown in FIGS. It is also possible to configure a plurality of (for example, two) impact absorbing elements 2Aa having a size and store them side by side in the cloth bag 3A. In this case, the shape and size of the shock absorbing element may be different or the same.

  (iii) The number of the cloth bags for storing the shock absorbing material is not limited to one, but may be plural. For example, as shown in FIG. 6, the shock absorber 2 is housed in a cloth bag 3B provided with stitched portions M11 and M12 on both sides, which is parallel to the housing direction of the shock absorber 2, to form a first bag body 1B. To do. Then, as shown in FIG. 7, the first bag 1B is placed in a cloth bag 3C provided with stitched portions M21 and M22 extending in a direction orthogonal to the extending direction of the stitched portions M11 and M12 of the first bag 1B. The cloth bag 3B, 3C can be housed to form a shock absorbing bag body 1C (see FIG. 8) having a double structure. Here, if the shock absorbing material has a square cross section, a common cloth bag can be used by adjusting the size of the stitched portion, which is advantageous for cost reduction.

  Further, as shown in FIG. 8, the shock absorbing bag 1B is placed in a cloth bag 3D having stitched portions M31 and M32 extending in a direction perpendicular to the direction in which the stitched portions M11 and M12 extend and the direction in which the stitched portions M21 and M22 extend. Can be made into an impact-absorbing bag body in which the cloth bags 3B to 3D have a triple structure, and the number of cloth bags to be used can be increased. Further, the direction in which the stitched portion extends does not need to be different, and a stitched portion that extends in an overlapping manner can also be used. Furthermore, it is possible to regularly and irregularly provide a large number of short stitched portions in one cloth bag.

  (iv) The installation location of the impact-absorbing bag is not limited to the bottom of the cliff 11 that receives a fallen object or the upper side of the ceiling wall of the tunnel 22, and the kinetic energy of the collision object is reduced, A similar effect can be obtained by providing it in a place where movement to the periphery needs to be suppressed. In this case, it is possible to select and use two or more of the above-described shock absorbing bag bodies, and it is also possible to further select and use a shock absorbing bag body having a stitched portion different from them. .

DESCRIPTION OF SYMBOLS 1,1A Shock-absorbing bag body 2,2A Shock-absorbing material 2Aa Shock-absorbing element 3,3A Cloth bag 3a Outer side surface 4 Suture thread 11,21 Cliff 12 Support fence 22 Tunnel 22a Passage S Falling object M1, M2

Claims (5)

A shock-absorbing bag that absorbs the kinetic energy of a collision object that is a falling object such as a falling rock
A plate-like shock absorber made of expanded polystyrene is housed in a cloth bag,
The cloth bag is provided with a stitched portion that is partly brought into contact with each other on the outer side surface or the inner side surface and is sewn with a suture-like material so as to maintain the contact state, and has a shape corresponding to the shock absorbing material. Yes,
The shock-absorbing bag is characterized in that the suture-like material is inferior in strength to a woven yarn that weaves the cloth bag so as to be cut before the cloth bag is torn when the collision object collides. body.   The impact-absorbing bag body according to claim 1, wherein a surface other than the surface on which the stitched portion is formed is a portion that causes the collision object to collide. The cloth bag is provided with another cloth bag on the outside,
3. The another cloth bag also includes a stitched portion that is partly brought into contact with each other on the outer side surface or the inner side surface and is stitched with a suture material so as to maintain the contact state. The shock absorbing bag described in 1. A plurality of the shock absorbing bag bodies according to any one of claims 1 to 3, a protective fence that absorbs the kinetic energy of a collision target such as a falling rock,
A protective fence characterized in that the shock-absorbing bag bodies are coupled by coupling means so as to maintain a certain positional relationship without being separated from each other. A plurality of shock-absorbing bag bodies according to any one of claims 1 to 3 are arranged in parallel, and are protective fences that absorb the kinetic energy of collision objects such as falling rocks,
The said shock-absorbing bag body is made into the several unit integrated by uniting with the binding tool for every plurality, The protection fence characterized by the above-mentioned.

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