JPH047218Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a road guardrail for reducing automobile accidents.

[Conventional technology]

Conventional road guardrails are comprised of a plurality of upright posts buried at required pitches along the edge of the road, and rail-like protective materials such as shaped steel plates fixed to the posts.

[Problem that the invention attempts to solve]

However, this conventional road guardrail,
The protective material is constructed relatively low so that a car can hit it, so a car that crashes into it due to incorrect driving could climb over it and fall off the road.Furthermore, the support pillars have no cushioning properties. The severe impact force caused problems such as damage to cars and serious injuries to people.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention has a structure in which the pillar has an inclined fixed shaft whose lower part is buried,
It consists of a hollow inverted J-shaped sliding column that fits on the outside of this fixed shaft so that it can slide up and down and cannot be removed.The fixed shaft is buried at a required angle and tilted outward from the road, and the sliding column is curved. Some have a shaped head facing the center of the road and a rail-shaped protective material fixed to this head so that the sliding support can slide upward in the event of a collision with a car.

[Effect]

According to this invention, the inverted J-shaped sliding column is hollow and has a curved head facing inward toward the road, so it has cushioning properties against car collisions and also slides along with the fixed shaft. Since the strut is tilted outward from the road, a component of the horizontal impact force acts in the axial direction, causing the sliding strut to slide upward and elongate the entire strut.

〔Example〕

An embodiment of this invention will be described based on the accompanying drawings. As shown in FIG. 3, the road guardrail of this invention includes a plurality of extensible upright columns 1 buried along the edge of a road B, and a plurality of extensible upright columns 1 that are connected and fixed to the upper ends of the columns 1. It consists of a rail-shaped protective material 2.

As shown in FIG. 1, the support column 1 includes an inclined cylindrical fixed shaft 3 whose lower half is buried in the soil, and a hollow shaft that is closely fitted to the outside of the fixed shaft 3 so as to be able to slide up and down and not come out. The fixed shaft 3 is buried with a fixed shaft 3 tilted outward from the road at a required angle α, and the sliding column 4 has a curved head 5 facing the center of the road. A rail-shaped protective member 2 made of a shaped steel plate is screwed to the tip end surface of the head 5.
As shown in FIG. 2, the sliding strut 4 can be slid upward by the axial component force A exerted by the impact force F of the automobile, and has appropriate cushioning properties against the impact force F. I own it.

The fixed shaft 3 is formed into a piston shape with a disk-shaped collar 6 connected to the upper end thereof, and is fixed to the center of a substrate 7 with its lower end inclined at a required angle α. It becomes strong. In addition, when fixing the fixed shaft 3 to the board 7, the nut 8 for screwing the sliding column 4 is fitted into the fixed shaft 3 in advance.

The lower half of the sliding column 4 has a straight tube shape, and a cylinder wall 9 is provided therein to keep the collar 6 of the fixed shaft 3 airtight, and a screw 10 is cut into the lower end. The sliding column 4 is attached to the fixed shaft 3 by inserting the upper half of the fixed shaft 3 into the cylinder wall 9 and screwing a nut 8 into the male screw 10 at the lower end so that it can freely slide up and down and cannot be removed. Note that an airtight packing is fitted between the nut 8 and the fixed shaft 3.

As shown in FIG. 2, the support column 1 is a hollow body, has a curved head 5, and has appropriate cushioning properties against the horizontal impact force F on the protective material 2. Since the sliding column 4 slides upward due to the axial component A of the impact force F, the entire column expands, making it possible to prevent the collided car from falling off the road. The cylinder wall 9 of the sliding strut 4 and the collar 6 of the fixed shaft 3 are airtight, and when the sliding strut 4 slides upward, the inside of the cylinder 9 becomes high pressure and the hollow part above the cylinder wall 9 becomes vacuum. This results in a large buffering effect.

The protective material 2 is divided by providing cuts 11 (see FIG. 3) at appropriate points to facilitate upward movement as the support strut 1 expands in the event of a collision of an automobile. The protective material 2 may be in the form of a rail of shaped steel plates, or in the form of a rope.

The road guardrail of the present invention can be used not only along the edge of the road, but also as a handrail at the edge.

〔effect〕

As mentioned above, in the road guardrail of this invention, when a car collides with the support, the support expands so that the car does not fall over the road and fall off the road, and the support has appropriate cushioning properties. Therefore, it is extremely useful for traffic safety, such as reducing car damage and personal injury.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the invention, FIG. 2 is an explanatory view of the operation of the same, and FIG. 3 is a plan view showing the installation state of the same. 1... Support column, 2... Protective material, 3... Fixed shaft, 4
...Sliding post, 7... Board, 11... Cut, A...
...Impact force.

Claims (1)

[Scope of utility model registration request] In a guardrail consisting of a plurality of upright columns buried along the edge of a road and a rail-like protective material fixed to the columns, each of the columns has an inclined fixed shaft whose lower part is buried, and an inclined fixed shaft on the outside of the fixed shaft. Hollow inverted J that can be slid up and down and fitted without falling out.
The fixed shaft is buried with the fixed shaft tilted outward from the road at a required angle, and the sliding column has a curved head directed toward the center of the road, and a rail-shaped protective material is fixed to the head. A guardrail characterized in that the sliding post is capable of sliding upward in the event of a collision with an automobile.