JP6475586B2 - Road cushion - Google Patents

Description

  The present invention relates to a road shock absorber, and more particularly to a road shock absorber that mitigates an impact when a vehicle or the like traveling on the road collides.

  Conventionally, in order to prevent a serious accident caused by a vehicle collision with a highway pier or a power pole on the road side, it has been studied to install a shock absorber in the vicinity of these to reduce the impact at the time of the collision. For example, Patent Document 1 discloses a cushion block structure that connects and fixes these block bodies by inserting and twisting a rod-shaped lock bar into an insertion port of a large number of stacked block bodies.

JP 2003-41537 A

  However, in the above cushion block structure, each block body is integrally connected by a lock bar penetrating all the block bodies, so that the deformation generated in the cushion block structure at the time of a vehicle collision is small as a whole, and the impact is sufficient. There was a risk that it could not be alleviated. In addition, the impact force generated in some block bodies at the time of a vehicle collision may be transmitted to other block bodies via the lock bar, so many individual block bodies are damaged and can be replaced or repaired. There was a problem that the cost for was high.

  Then, an object of this invention is to provide the shock absorber for roads which is excellent in shock absorption property and economical efficiency.

  The object of the present invention is a road shock absorber provided with a buffer wall formed by laminating a plurality of bar-shaped cross members made of wood, wherein the cross member penetrates in an inclined direction with respect to an axis. The first inclined hole and the second inclined hole are arranged in parallel along the axis, and are formed so as to communicate with each other between the horizontal members adjacent vertically. The upper and lower cross members are achieved by a road cushion connected by a wooden connecting pin inserted so as to straddle the first inclined hole and the second inclined hole.

  In this road cushion, the cross member is preferably provided with notches at both ends, and a plurality of the buffer walls are combined in a cylindrical shape so that the notches are engaged with each other. A buffer can be constructed. In this configuration, it is preferable that a lightweight aggregate is accommodated in the cylindrical shape.

  ADVANTAGE OF THE INVENTION According to this invention, the shock absorber for roads which is excellent in shock absorption property and economical efficiency can be provided.

It is a front view of the shock absorber for roads concerning one embodiment of the present invention. It is a top view of the shock absorber for roads shown in FIG. It is sectional drawing for demonstrating the manufacturing process of the shock absorber for roads shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIGS. 1 and 2 are a front view and a plan view, respectively, of a road cushion according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the road shock absorber 1 includes a buffer wall 10 formed by laminating a plurality of cross members 20. The cross member 20 is a round bar-shaped member made of wood, and for example, thinned wood such as cedar and cypress can be used effectively. In order to improve the durability of the cross member 20, it is preferable to perform a surface treatment using a preservative or the like. The size of the cross member is not particularly limited. For example, the diameter is about 100 mm and the length is about 1200 mm. The number of laminated cross members is not particularly limited, but is preferably 3 or more. In this embodiment, 10 cross members 20 are laminated so that the height is about 1000 mm.

  Notches 21 and 22 are formed at both ends of the cross member 20. The cutout portions 21 and 22 have a shape in which a part of the cross member 20 in the axial direction (for example, about 100 mm from the end face) is cut out about half so as to be a semicircular cross section. The lower half of the cross member 20 is cut out in the portion 21, and the upper half of the cross member 20 is cut out in the other cutout portion 22. The cross-sectional shape of the cross member 20 may be a rectangle or an ellipse other than a circle.

  The cross member 20 has a first inclined hole 23 and a second inclined hole 24 penetrating in an inclined direction with respect to the axis. The upper end opening of the second inclined hole 24 is located immediately above the lower end opening of the first inclined hole 23, and thereby, the lower end opening of the first inclined hole 23 between the stacked cross members 20, 20. The upper end opening of the second inclined hole 24 coincides, and the first inclined hole 23 and the second inclined hole 24 communicate with each other. As will be described later, a connecting pin is inserted into the first inclined hole 23 and the second inclined hole 24 that communicate with each other. The first inclined hole 23 and the second inclined hole 24 are preferably substantially parallel to each other, and the inclination angle is not particularly limited, but is, for example, 45 degrees. In the present embodiment, the first inclined hole 23 and the second inclined hole 24 are respectively formed on the left and right sides of the cross member 20, but the number of the first inclined hole 23 and the second inclined hole 24 is different. May be each single.

  The road buffer body 1 includes four buffer walls 10 described above, and is configured by arranging them in a cylindrical shape. Each buffer wall 10 is combined so that the horizontal flat portions of the one notch portion 21 and the other notch portion 22 are in contact with each other at the cylindrical corner portions adjacent to each other so as to be orthogonal to each other. Is provided with a bottom plate 30 made of plywood. The road cushion 1 has a square shape in plan view in the present embodiment, but may be formed in a rectangular shape in plan view using cross members 20 having different lengths. Moreover, it is also possible to comprise the shock absorber 1 for roads from a polygonal cylinder shape more than a pentagon, or only from a single buffer wall.

  The cylindrical interior formed by the four buffer walls 10 accommodates a granular lightweight aggregate 31 contained in a bag-like body such as a flexible container bag. The material 31 can be adsorbed and removed. In order to improve the surrounding aesthetics, shrubs and the like may be planted using the lightweight aggregate 31 as a base material.

  As shown in FIG. 3 (a), the road shock absorber 1 described above engages the notches 21 and 22 between the horizontal members 20 and 20 adjacent in the horizontal direction, and the horizontal members 20 and 20 adjacent in the vertical direction. After the connecting pin 32 is inserted into the first inclined hole 23 and the second inclined hole 24 of 20, a new cross member 20 is mounted, thereby connecting from the connecting pin 32 as shown in FIG. A new cross member 20 is laminated on the two cross members 20, 20. Thus, the cross members 20 are paired up and down and are connected by the connecting pins 32 in order from the bottom. The connecting pin 32 is made of wood, and is preferably cut easily when the cross member 20 receives an impact. In this embodiment, thinned wood having a diameter of about 20 mm is used.

  The road shock absorber 1 of the present embodiment is formed by forming a first inclined hole 23 and a second inclined hole 24 penetrating in an inclined direction with respect to the axis in a horizontal member 20 made of wood, and the upper and lower horizontal members 20. , 20 are connected by a wooden connecting pin 32 inserted so as to straddle the first inclined hole 23 and the second inclined hole 24, so that the upper and lower first inclined holes 23 and the second inclined holes are connected to each other. Even when a slight shift occurs in the arrangement of the holes 24, the displacement is absorbed by the bending deformation of the cross member 20 and the connecting pin 32, and the connecting pin 32 to the first inclined hole 23 and the second inclined hole 24 is absorbed. In addition to enabling insertion, the cross members 20 and 20 can be reliably connected to each other by the elastic force due to the bending of the inserted connecting pin 32. Therefore, operations such as transportation and installation of the road cushion 1 can be performed quickly and easily.

  Further, when the shock absorbing wall 10 receives a large impact force due to a collision of a vehicle or the like, the connecting pin 32 is easily broken and each cross member 20 is greatly scattered, thereby increasing the impact energy reducing effect of the vehicle or the like. Can do. In addition, most of the cross member 20 is scattered without being deformed, so that the cross member 20 is less damaged, can be connected by a new connecting pin 32, and can be reused.

DESCRIPTION OF SYMBOLS 1 Road buffer 10 Buffer wall 20 Cross member 21,22 Notch part 23 1st through-hole 24 2nd through-hole 31 Lightweight aggregate 32 Connection pin

Claims (3)

A road cushion having a buffer wall configured by laminating a plurality of bar-shaped cross members made of wood,
The cross member has a first inclined hole and a second inclined hole penetrating in an inclined direction with respect to the axis,
The first inclined hole and the second inclined hole are arranged in parallel along the axis, and are formed so as to communicate with each other between the horizontal members adjacent vertically.
A road cushion in which the upper and lower transverse members are connected by a wooden connecting pin inserted so as to straddle the first inclined hole and the second inclined hole. The cross member is provided with notches at both ends,
The road buffer according to claim 1, wherein a plurality of the buffer walls are combined in a cylindrical shape so that the cutout portions are engaged with each other.   The shock absorber for road according to claim 2, wherein a lightweight aggregate is accommodated in the cylindrical shape.

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