KR20120007395A - Guard rail structure with improved impact absorption and shape resilent properties - Google Patents

Abstract

PURPOSE: A guardrail structure having reinforced shock absorbing and shape restoring properties is provided to prevent a vehicle from becoming separated from a guardrail in a collision. CONSTITUTION: A guardrail structure having reinforced shock absorbing and shape restoring properties comprises a corrugated guardrail(30), a first elastic member(10), a post(20), and fastening members(40). The corrugated guardrail absorbs shock energy from a vehicle. The first elastic member absorbs the shock energy transferred from the guardrail and has multiple hollows and one or more fastening holes. The post is fixed to the groud and absorbs the shock energy transferred from the first elastic member. The fastening members fasten the guardrail to the post through the first elastic member.

Description

Guard rail structure with improved impact absorption and shape resilent properties

The present invention relates to a guardrail structure, and more particularly, to a guardrail structure excellent in shock absorption and shape restoration and excellent driving safety function.

Guardrail structures are installed on both sides of the road where there is a risk of falling or dropping, along the direction of the roadway, and the vehicle loses its center due to slippery or carelessness and prevents vehicles falling off the road in the normal direction or fall. It is a structure that prevents human damage. In general, the guardrail structure is composed of a guard rail that absorbs the impact energy from the crashing vehicle, and a fastening member for secondaryly absorbing the impact energy transmitted from the guard rail and fastening and fixing the post and guard rail fixed to the ground to the support. .

In the guardrail structure configured as described above, the guardrail has various cross-sectional shapes so as to effectively absorb impact energy. Commonly used guardrails include a W beam and a tree beam. The W-beam is a cross-sectional width (W1) 350mm, corrugation width (C1) 50 ~ 75mm, plate thickness 4mm shape cross-section, mainly used in guardrail structure installed in Korea. The tree beam is a shape cross section of 460 mm in cross section width (W2), 69 mm in corrugation width (C2), and 3.2 mm in plate thickness. In addition, the tri-beam is designed to cope with the height of a variety of vehicles from small cars to large cars, and recently used in the guardrail structure of the road like the W beam.

The guardrail according to the related art, such as the W beam and the tree beam, absorbs the impact energy while the round wave portion deforms, and the joining portion between the wave form and the other wave form is bonded to the support or other connecting member. In such a guard rail, the corrugated portion preferably has a performance of effectively absorbing impact energy while its shape changes in accordance with the tension and rigidity of the guardrail in the traveling direction of the crashing vehicle.

However, the guardrail according to the prior art has the effect of absorbing the impact energy of the crash vehicle to some extent, because the convexly formed corrugated portion is continuously formed along the cross-sectional width, but does not absorb efficiently. That is, the guardrail of the prior art has a problem in that the absorption capacity and rigidity of the impact energy that can cope with various vehicle models are weak.

Although the shape and structure of these guardrails have remained largely unchanged for many years, existing road guardrails have not been able to fully function as road traffic vehicles have increased day by day and road speeds have increased due to linear improvement of roads. to be.

Accordingly, an object of the present invention is to provide a guardrail suitable for the current road situation.

In addition, the present invention is excellent in shock absorption ability to prevent the departure of the vehicle even in high-speed driving collision, it is possible to prevent the vehicle from being bounced off due to the high repulsive force, the shape resilience enough to function after the crash accident It is an object of the present invention to provide a guard rail with excellent safety driving guidance function.

According to the present invention to achieve the above object, a wave guard rail for absorbing the impact energy from the vehicle, the fastening member for absorbing the impact energy transmitted from the guard rail and the fastening member fixed to the ground and the guard rail fastened to the support In the guardrail structure comprising a,

A plurality of cavities opened at the rear side are formed in the elastic body portion having a predetermined thickness having a curved surface that is formed at the front surface to match part or all of the rear surface of the corrugated guardrail, and a curved surface is formed at the rear which is aligned with the side arc of the cylindrical support. Provided is a guardrail structure that reinforces shock absorbency and shape resilience, in which a guardrail is fastened and fixed to a support by a first elastic member having at least one fastening hole penetrating the thickness in the center thereof.

In addition, according to the present invention there is provided a guardrail structure reinforcing the shock absorbency and form resilience that the fastening member is a bolt and nut.

In addition, according to the present invention is a guardrail structure having an inner cylinder inserted into the outer cylinder so as to be able to be shanghai inside, and the reinforcement of shock absorbing and shape resilience, which is a strut which can adjust the height by fastening of the shangdong and the fastening member of the inner cylinder. Is provided.

Also, according to the present invention, at least one fastening hole penetrating the thickness is formed in the center of the elastic material body having a predetermined thickness having a rear surface matching with the side arc of the inner cylinder of the support and a front surface matching with some or all of the rear surface of the auxiliary guard rail. Provided is a guardrail structure that reinforces the shock absorbency and form resilience in which one or more auxiliary guard rails are fastened by fastening members on the upper side of the post inner cylinder through two elastic members.

In addition, according to the present invention there is provided a guardrail structure reinforcing impact absorbing and shape resilience further comprising a safe running induction reflector coupled to the guardrail surface.

In addition, according to the present invention, the reflector has a central flat portion and a mountain-shaped bent portion on both sides has a safety driving induction reflection display is provided in the bent portion and the shock absorbing and reinforcement form reinforcement guard formed in the flat portion is formed Rail structures are provided.

In addition, according to the present invention, there is provided a guardrail structure in which the reflective display reinforces the shock absorbency and shape resilience, which is a chevron reflective display in which the degree of road curvature is represented by the number of bending marks.

In addition, according to the present invention there is provided a guardrail structure reinforcing the shock absorbing and shape resilience provided with a solar module and a safety induction device driven by electricity generated by the solar module on the guard rail or the support.

The guardrail structure according to the present invention can effectively prevent physical damage and physical damage by strengthening the shock absorbing ability and form resilience, and has the advantage of effectively inducing the driver's safe driving at night.

1 is a side cross-sectional view of a guardrail structure according to an embodiment of the present invention,
Figure 2 is an exploded perspective view illustrating a preferred embodiment of the re-elastic member used in the guardrail structure of the present invention,
3 is a rear view of the first elastic member shown in FIG. 2;
Figure 4 is an exploded perspective view of a guardrail structure according to another embodiment of the present invention,
5 is a side cross-sectional view of a guardrail structure according to another preferred embodiment of the present invention;
6 is a perspective view of the guardrail structure shown in FIG.
7 is a side cross-sectional view of a guardrail structure in accordance with another preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings illustrating preferred embodiments according to the present invention will be described in detail the present invention.

1 illustrates a guardrail structure according to a first embodiment of the present invention, in which the guardrail structure shown is a waveform guardrail 30 that absorbs impact energy from a vehicle, and secondary the impact energy delivered from the guardrail. The first elastic member 10 to absorb the first, the impact energy transmitted from the first elastic member 10 is absorbed in the third and is fixed to the ground via the support 20 and the first elastic member 10 through And a fastening member 40 for fastening and fixing the guard rail 30 to the support 20 at a predetermined height.

In the example shown in FIGS. 2 and 3, the front surface of the first elastic member 10 is a corrugated surface that matches a portion of the rear surface of the corrugated guard rail 30, and the rear surface is a curved surface that matches the side arc of the cylindrical support 20. . The thickness of the first elastic member 10, that is, the width between the front surface and the rear surface, is such that the guard rail does not come in contact with the support when the guard rail 30 is fastened to the support 20 via the first elastic member 10. The degree is adequate. In the illustrated example, the front surface of the first elastic member 10 is to be matched to a part of the rear surface of the guard rail 30, but may be matched to a part of the rear surface of the guard rail 30, and in the illustrated example, W-type Although the guardrail is exemplified, other types of guardrails may be manufactured and used in a form corresponding thereto.

The body portion of the first elastic member 10 may be made of natural or synthetic resin of elastic material, in particular, a natural or synthetic rubber, which is a chain-like polymer material exhibiting rubbery elasticity at room temperature, preferably rubber. Hard rubbers, soft rubbers, foamed or non-foamed rubbers and the like can be used. Particularly preferred among soft rubbers and hard rubbers are soft rubbers having better shock absorbing ability.

In the body portion of the first elastic member 10 is formed a plurality of cavities 11 open from the rear surface and at least one fastening hole 12 penetrating the thickness is formed in the center. When the guard rail 30 is fastened and fixed to the support 20 via the first elastic member 10 having such a structure, the opening of the cavity 11 is blocked by the support 20 and air is introduced into the cavity 11. It becomes trapped and becomes an air pocket type.

In the guardrail structure installed in this state, the impact energy transmitted from the guard rail 30 that absorbs the impact energy from the vehicle is secondarily absorbed by the first elastic member 10, and in this process is filled in the cavity 11 The air absorbs and reduces the tremendous impact of the guardrail on the props while the air contained in the cavity is released by a momentary impact, thus preventing the guardrail props from bending or bending to withstand the direct impact of the vehicle, resulting in a crash. Prevent vehicles from leaving the road.

Emission due to the collision of air filled in the cavity 11 may occur as a small gap is opened between the rear surface of the first elastic member and the support 20, and the pores p communicating with the outside air separately from the cavity 11 separately. May be provided to the first elastic member 10 so that the air filled in the cavity 11 is discharged through the pores p at the time of collision.

The cross-sectional shape of the cavity 11 can be processed into various shapes such as circular, elliptical, triangular, square, polygonal, and the like, although not particularly limited, it is preferable to use molding for molding the first elastic member.

It is also possible to insert a spring 13 suitable for the shape of the cavity into part or all of the cavity 11. This is preferable because the guardrail deformed by the collision can be gradually restored to its original shape, that is, the shape restoring property can be enhanced.

4, 5 and 6 illustrate the guardrail structure according to the second embodiment of the present invention, which is similar in that the guardrail is fastened to the support via the first elastic member, and has a height adjustable post as a support. The difference is that it uses and additionally installs additional guardrails.

The strut 20 of the second embodiment has an inner cylinder 20-2 inserted into the outer cylinder 20-1 so as to be shanghai movable, and fastening holes are formed in the outer cylinder and the inner cylinder to fasten the shandong and the outer cylinder and the inner cylinder of the inner cylinder. It is possible to adjust the height by fastening the fastening member (for example, bolt and nut) through ball matching. The outer cylinder 20-1 may use an existing post, and in this case, the inner cylinder 20-2 may be inserted into the upper end of the existing post to change the height of the post.

These height adjustable struts are used as a means of increasing safety for curve sections or increasing vehicles and increasing speeds with high fall hazards, and easily reinforce the height when guard rails of increased height are needed and an auxiliary guard on top of them. It is effective because a fall prevention guard rail can be installed as a rail. The auxiliary guardrail 70 in the example shown in FIG. 4 is one single-headed guardrail, and in the example shown in FIGS. 5 and 6 the auxiliary guardrail 70 is two single-headed guardrails, which is an inner cylinder 20. A second elasticity in which at least one fastening hole penetrating the thickness is formed at the center of the elastic material body having a predetermined thickness having a rear surface that matches the side arc of -2) and a front surface that matches a part or all of the rear surface of the guard rail 70. It is fastened by the fastening member which consists of a bolt and a nut to the upper side of the support | pillar inner cylinder 20-2 via the member 60. The cavity 11 and the spring 13 may be applied to the second elastic member similarly to the first elastic member 20.

4, 5 and 6 in the embodiment shown in Figure 4, the fastening member 40 is a bolt and a nut, the bolt is inserted from the surface of the guard rail to the back of the post, and the nut is inserted into the form of fastening but in such a fastening method The present invention is not limited thereto, and as shown in FIG. 7, the second elastic member is fastened to the support by bolts and nuts, and then a method of fastening by inserting a guard rail 70 having grooves into which the bolt head can be inserted and gripped is inserted. In addition to the above, various fastening methods may be used.

In addition, the guardrails 30 and 70 of the guardrail structure of the present invention may be attached to the safety driving induction reflector on its surface. The reflective plate illustrated in the illustrated example has a central flat portion and a mountain-shaped bent portion at both sides, and a safety driving induction reflective mark is given to the bent portion, and a fastening hole is formed in the flat portion, and the reflective mark is to bend the degree of road curvature. It is a chevron reflective display in the number of displays. Such a reflective display can be easily recognized by indicating a degree of bending of, for example, 30 ° for one number, 60 ° for two, and 90 ° for three. As a result, the driver can effectively drive safety. There is an advantage. Of course, the reflective display can be applied to various types of safety driving induction reflective display according to the shape of the road and the surrounding conditions.

In addition, the guardrail structure of the present invention includes a solar module and a safety induction device driven by the electricity generated by the solar module on the guardrail or support-for example, warning lights, sirens, etc. to inform the danger warning of the guardrail installation section It is preferable to use-in this way, since it is possible to achieve safe driving even in a road situation where visibility is extremely poor.

10: first elastic member
11: joint
12: fastener
13: spring
20: prop
20-1: outer cylinder
20-2: inner tube
30,70: Guardrail
40: fastening member
50: driving safety reflector
60: second elastic member

Claims (8)

In the guardrail structure comprising a wave guard rail for absorbing the impact energy from the vehicle, a support for absorbing the impact energy transmitted from the guard rail fixed to the ground and a fastening member for fastening and fixing the guard rail to the support,
A plurality of cavities opened at the rear side are formed in the elastic body portion having a predetermined thickness having a curved surface that is formed at the front surface to match part or all of the rear surface of the corrugated guardrail, and a curved surface is formed at the rear which is aligned with the side arc of the cylindrical support. Guard rail structure reinforced reinforcing shock absorbing and shape resilience, characterized in that the guard rail is fastened to the support by a predetermined height via the first elastic member having at least one fastening hole penetrating the thickness in the center.
2. The guardrail structure of claim 1, wherein the fastening members are bolts and nuts.
The method of claim 1, wherein the support is provided with an inner cylinder inserted into the outer cylinder so as to be able to adjust the height by fastening the shandong and the fastening member of the inner cylinder reinforces shock absorbency and shape resilience, characterized in that One guardrail structure.
The method of claim 3, wherein at least one fastening hole penetrating the thickness is formed in the center of the elastic material body having a predetermined thickness having a rear surface matching with the side arc of the inner cylinder and a front surface matching with some or all of the rear surface of the auxiliary guard rail. At least one auxiliary guard rail via the second elastic member is a guardrail structure reinforcing impact absorbing and shape resilience, characterized in that the fastening member is fastened to the upper side of the inner cylinder.
The guardrail structure of claim 1 or 4, further comprising a safety driving induction reflector coupled to the guardrail surface.
According to claim 5, The reflector has a central flat portion and the mountain-shaped bent portion on both sides of the shock absorbing and shape, characterized in that the bent portion is given a safety driving induction reflection display and the fastening hole is formed in the flat portion Guard rail structure with enhanced stability.
7. The guardrail structure of claim 6, wherein the reflection display is a chevron reflection display indicating the degree of road curvature by the number of bending signs.
The guardrail structure according to claim 1, wherein the guardrail or the support is provided with a solar module and a safety induction device driven by electricity generated by the solar module.

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