JP2008157007A - Road sidewall arranged with rotary body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in which a terrible accident is frequently caused by contact with a guardrail or protective barrier of a road during inattentive driving, drowsy driving or drinking driving, by making the guardrail and protective barrier in a structure with extremely reduced frictional resistance which is expected to allow a vehicle to travel along a wall surface reducing the rebound of the vehicle on a collision surface and hence the chance of causing a spinning or overturning accident. <P>SOLUTION: As a means for solving the problem, this plan proposes the protective barrier, a protective fence and the guardrail of the road of arranging a rotary body so as to rotate in the rotational direction of the vehicle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to road side walls such as road protection walls, guard fences, and guard rails.

  Currently, plate-like metal plates are used for the guard rails in the median strip of the road, and the protective walls of expressways are constructed of concrete, iron plates, and the like.

  Frequently, catastrophic accidents are caused by contact with road guardrails and protective walls during sidewalk driving, snoozing driving, and drunk driving. If the guard rail and the protective wall have a structure with extremely low frictional resistance, the vehicle will not bounce off the collision surface, and the vehicle will run along the wall, causing few accidents to spin or roll over. It is expected to decrease.

  As a means for solving the above problems, the present proposal proposes road side walls such as a protective wall of a road in which wheels and rollers are arranged, a protective fence, and a guard rail.

The road side wall of the present invention is characterized in that a wheel or a roller is arranged in a belt shape at a height position of the body of a traveling vehicle so as to rotate in the vehicle traveling direction.
Road barriers, fences, and guardrails are constructed over long distances along the road and must be constructed with consideration given to the impact of heavy objects. Therefore, this proposal proposes a unit type that is easy to transport and install at the site.

The invention's effect

When a vehicle traveling at a tremendous speed comes into contact with the road wall, a large moment acts on the vehicle body with the contact surface as a fulcrum due to the frictional resistance of the contact surface, causing an accident.
If a rotating body such as a wheel or a roller is arranged on the protective wall of the road, the rotating body rotates at the same speed as the speed of the vehicle from the moment when the vehicle contacts the rotating body. Since the rotational moment is extremely small and the vehicle body runs along the roller, the damage caused by the accident can be greatly reduced.

[FIG. 1] is a configuration in which two parallel rails 1 are installed in a strip shape on the surface of a protective wall 3 such as an expressway, and a number of rollers 2 are installed at equal intervals between the rails. The rail is firmly fixed to the wall surface with bolts or the like. [FIG. 2] is a cross-sectional view taken along the line KK and shows a state in which the rollers are fixed to the upper and lower rails.
[FIG. 3] is an exploded side view of the roller mounting portion, and shows an example in which the roller 2 is attached to the rail 1.
On roads where vehicles frequently travel, it is necessary to promptly repair damaged parts. However, this proposal proposes a structure in which only a damaged roller can be quickly attached and detached.
The roller fixture 5 has a structure in which a shaft 7 that receives the roller 2 is fixed to a plate 6 and is fixed to upper and lower rails with bolts 8. The length of the shaft 8 is long enough to receive the bearing 9 of the roller 2.
In addition, as a method of pivotally supporting the roller, there is a method of pivotally supporting a roll by penetrating a bolt having a shaft formed at the tip from above and below the rail.

FIG. 4 is a front view of a unit type guard rail in which rollers are arranged.
As a method that can be quickly installed even if the side wall damage due to an accident is large and must be repaired over a wide area, a unit-type roller guardrail having a rectangular frame 10 is proposed. The parallel upper and lower rails 1 are components of a rectangular frame, and rollers are installed between the rails.

FIG. 5 is a front view of a unit type guard rail in which casters 11 are arranged.
A number of casters are arranged and fixed on the plate 12 so as to rotate in the traveling direction of the vehicle. [FIG. 6] is an LL cross-sectional view, in which a plurality of irregularities are formed in the cross section of the plate 12, and casters are attached to the convex portions. The strength of the plate is remarkably enhanced by forming the unevenness.
[FIG. 7] shows casters 11 arranged in two rows on a plate 13 in which only two ridges are formed, and is installed on both sides of a pole 14 to form a guard rail of a central separation band.

  On bridges, there are often accidents where cars fall over the railing of the bridge. In order to prevent such an accident, it is proposed to install caster or roller type guardrails on the railing.

The road side wall on which the rotating bodies of the present invention are arranged smoothly changes the direction of the vehicle that has collided, so the impact on the protective wall can be greatly reduced.
Therefore, there is little damage to the protective wall, repair is easy, and the economic effect is great.
In addition, there is little frictional heat generated at the time of collision, and the effect of suppressing the occurrence of a vehicle fire can be expected.
In addition, by installing guardrails according to the present plan at the corners of four-way intersections where accidents occur frequently, there is little damage to the guardrails and a reduction in the risk of vehicles jumping into people waiting for traffic lights is expected.
In addition, it is expected that the guardrail of this plan will be installed on the curve of mountain roads to prevent falls or installed on the protective walls of railway curves to help reduce the damage.
The price of a traffic accident is unimaginable, and the plan can greatly reduce the disaster and make an economic effect.

Front view of the roller guardrail installed on the protective wall of the expressway KK cross section Exploded side view of roller mounting Front view of unit-type roller guardrail Front view of unit type guardrail with casters LL cross section Side view of guard rail in the median strip with casters

Explanation of symbols

1. Rail 2. Roller 3. Protective wall Road 5. Roller fixture 6. Plate 7. Axis 8. Bolt 9. Bearing 10. Frame 11. Caster 12. Plate 13. Wheel 14. Pole

Claims (6)

  Road side walls with wheels or rollers arranged to rotate in the direction of travel of the vehicle.   The road side wall according to claim 1, wherein two parallel rails are installed in a strip shape, and a plurality of rollers are installed in parallel at equal intervals between the upper and lower rails.   The road side wall according to claim 1, wherein a rectangular frame is formed by using the two parallel rails according to claim 2 as components.   2. A road side wall according to claim 1, wherein casters are arranged on a plate.   Forming irregularities on the plate of [Claim 4] and arranging casters on the convex portions.   A railing for a bridge constructed with the road sidewall according to claim 1.

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