KR200267448Y1 - A Device for absorbing the impact force of metal guard rail - Google Patents

Abstract

The present invention relates to an impact mitigation device for a steel guard rail for minimizing the impact applied to a vehicle during a vehicle crash by installing a guard rail or a bridge railing installed on a road. More specifically, the steel structure is an elastic member. It is possible to restrain the increase of the road width by reducing the installation width by replacing the steel structure with the steel structure and using the elastic member, and to promote the safety of the occupants by effectively reducing the impact amount by elastic deformation and reusing after collision. As a shock absorbing device for a steel guard rail for attaching a concrete barrier,

In the shock absorbing device for minimizing the impact applied to the vehicle when the vehicle crash is installed to connect the guard rail 100 and the concrete barrier wall 150 is installed on the road, the guard rail 100 and the large concrete barrier wall 150 ) Is connected to the elastic member 210 made of a rubber member is characterized in that it is restored after being deformed for shock absorption.

Description

A device for absorbing the impact force of metal guard rail}

The present invention relates to an impact mitigation device for a steel guard rail for minimizing the impact applied to a vehicle during a vehicle crash by installing a guard rail or a bridge railing installed on a road. More specifically, the steel structure is an elastic member. It is possible to restrain the increase of the road width by reducing the installation width by replacing the steel structure with the steel structure and using the elastic member, and to promote the safety of the occupants by effectively reducing the amount of impact due to the elastic deformation and reusing after collision. The present invention relates to a shock absorbing device for an iron guard rail for attaching a concrete barrier.

In general, as shown in FIG. 1, the guard rail 100 connects the rails 100 having a waveform to each other, and connects the guard rail 100 to a support 110 formed of a circular, H-shaped, or angular shape. It is configured to prevent the vehicle from falling off the road lane or falling off the bridge or cliff. Currently installed guard rail 100 is fixed by connecting the rail 100 and the support 110 directly with bolts 115 so that the guard rail 100 and the support 110 can effectively buffer the impact force during a vehicle crash. none. In addition, in the conventional guard rail 100, as shown in FIG. 2, when the vehicle collides, the upper side 110a of the support 110 is deformed larger than the lower side 110b to the outside of the road so that the vehicle is guarded. Falling over the rails 100 may cause accidents to fall off. This conventional technique is to reduce the amount of impact of the collision vehicle, or to prevent the vehicle from crossing the guard rail 100 when the guard rail 100 and the vehicle collides.

In addition, in the case of a concrete median divider and a concrete bridge railing, etc., it is not suitable for reducing the damage of the occupant of the crash vehicle or the vehicle itself, and to prevent the crash vehicle from invading into the opposite driving lane or falling from the bridge. Is installed. Therefore, when the traveling vehicle collides with the concrete protection object, the damage of the vehicle becomes large, and thus the safety of the occupant is also dangerous. This prevents the concrete shield from absorbing the impact force caused by the collision of the vehicle, and a large portion of the impact force is transmitted to the vehicle and the occupant, thereby causing damage. Therefore, there is a need for means for protecting vehicles and occupants from concrete barriers.

In order to solve such a problem, Korean Patent Application No. 98-39058 (name: Shock Absorbing Device for Iron Guard Rail), which has been previously filed by the present inventors, is disclosed, and the device 1 is shown in FIG. Likewise, by connecting the guard rail 100 to the concrete barrier wall 150 is installed on the road, the front plate is connected to the guard rail 100, and is connected to the barrier wall 150 while maintaining a predetermined interval with respect to the front plate A fixing part having a rear plate; The upper edges of the front plate and the rear plate are connected to each other, but the upper plate is positioned horizontally, and the lower edges of the front plate and the rear plate are connected to each other, and the front plate side is inclined so that the front plate side is positioned higher than the rear plate side with respect to the horizontal direction. A connection part having a bottom plate formed; And a pair of upper and lower plates respectively positioned at upper and lower sides of the upper plate and the lower plate, the reinforcing part having support plates for structurally complementing the front and rear plates and the upper and lower plates. Mounting the guard rail 100 as the bolt 160 on both sides of the, which is, when the vehicle collides with the guard rail 100, while greatly weakening the impact force of the lower side (110b) of the guard rail 100 The deformation is large to prevent the vehicle from crossing the concrete barrier 150.

In addition, in FIG. 3B, the apparatus 1 located on both sides of the concrete barrier wall 150 is bound to each other by a tie bolt 170 or the like passing through the barrier wall 150, and guarded to the apparatus 1. It is shown that the rail 100 is attached as a bolt, and according to this, when the apparatus 1 is installed, when the vehicle collides with the concrete shield 150 and is impacted, the impact amount of the crash vehicle is greatly reduced. Safety can be obtained, and when the guard rail 100 is deformed due to the impact force of the collision vehicle, the upper side of the guard rail 100 is maintained on the side of the lane, and the lower side of the guard rail 100 is bent out of the lane, so that the guard rail 100 By supporting the upper side of the vehicle, an improved effect was obtained to prevent an accident that the crash vehicle overturns the guard rail 100.

However, in the conventional shock absorbing device for the steel guard rail, the steel structures are made large in order to absorb the shock sufficiently, which is excessively occupied the road width, and in the case of a shortage of the source such as the existing national road, etc. It is difficult to install. In addition, the steel structures are made of ordinary steel, not only the amount of absorption for vehicle shock is insufficient, but also the shock absorbing device itself is damaged along with the guard rail when the vehicle crashes, so that it is difficult to reuse after an accident.

The present invention was devised to solve the above-mentioned problems, and its purpose is to greatly reduce the impact amount of the collision vehicle and to reduce the overall width of the structure when the vehicle collides with the impact mitigation unit installed on the concrete protection. To reduce the increase in the width of the road, and to maximize the reuse part to provide a shock absorbing device of the steel guard rail for attaching the concrete barriers to facilitate the maintenance and repair of the equipment.

1 is a schematic diagram showing a steel guard rail mounting configuration according to the prior art

2 is an explanatory diagram showing a state in which a vehicle collides with a conventional iron guard rail and is deformed.

3A and 3B are schematic configuration diagrams showing a state in which a shock absorbing device for a steel guard rail according to the prior art is installed on a concrete barrier;

Figure 4a and 4b is a schematic configuration diagram showing a state in which the shock absorbing device of the steel guard rail according to the present invention is installed on the concrete firewall

Figures 5a and 5b is a block diagram showing a modification to the shock absorbing device of the iron guard rail according to the present invention.

Explanation of symbols on the main parts of the drawings

100 ... guardrail

150 ... Concrete Firewall

200 ... shock absorber of steel guard rail

210 ... elastic member (rubber member)

220 ... steel structure

The present invention as a technical configuration for achieving the above object, in the impact relief device for minimizing the impact applied to the vehicle when the vehicle is installed to connect the guard rail and the concrete barrier is installed on the road,

The front plate connected to the guard rail, the rear plate connected to the security barrier while maintaining a constant distance with respect to the front plate and the bolt connection brackets are attached to both sides, and the upper edges of the front plate and the rear plate are connected horizontally The upper plate and the lower edge of the front plate and the rear plate which are positioned to each other, the elasticity of the rubber member inside the steel structure consisting of a lower plate formed by inclining so that the front plate side is positioned higher than the rear plate side with respect to the horizontal Inserts the member,

The steel structure is mounted on the concrete protection wall by bolts and nuts, so that when the vehicle collides with the guard rail, the elastic member greatly weakens the impact force while greatly deforming the lower side of the guard rail. By providing an impact mitigating device of the steel guard rail for attaching the concrete wall, characterized in that the vehicle is configured not to cross the concrete barrier.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

4A and 4B show a state in which the shock absorbing device 200 according to the present invention is mounted on both sides of the concrete barrier wall 150 via the bolt 160, and the tie is fastened through the concrete barrier wall 150 in the width direction. As a schematic diagram showing the state mounted by the bolt 170, the configuration of the overall structure made of steel for the impact mitigating device 200 is Korean Patent Application No. 98-39058 (applicable to the present inventors) Name: roughly the same as the shock absorber for steel guard rails.

The present invention fills the elastic member 210 having excellent restoring force while absorbing a larger impact force in a smaller volume than steel in the steel structure 220 forming the frame of the device, and thus, made of only the steel structure 220 Compared to the case, it is possible to reduce the mounting space of the device 200, thereby facilitating its use even on narrow roads.

Of course, it is possible to modify the shape of the steel structure 220 according to the application of the elastic member 210 in various ways, all such modifications are included in the scope of the present invention.

For example, as shown in FIG. 5A, the guard rail 100 may be connected to the concrete protection wall using only the elastic member 210 omitting the steel structure 220, but in this case, the concrete protection wall may be affected by a small impact. There is a risk of falling off, so it will be practically impossible to use.

In addition, as shown in Figure 5b, the steel structure 220 is prepared with a plurality of plates, any one plate is fixed to the concrete protection wall by connecting the bolt 160 through the medium, the other plate guardrail Fixing by connecting the bolt to the 100 via a medium, and in the state in which the elastic member 210 is sandwiched between the plate, the structure of the plate is connected by a plurality of steel steel wire 230 can also be presented as a modification. In this case, while the elastic member 210 is not feared to fall off the concrete protection wall, a separate steel wire 230 is required and will cause difficulty in construction.

The elastic member is preferably a rubber member, it is also possible to use a member such as an elastic coil spring.

In the impact mitigation device of the present invention having the above-described configuration, when the vehicle collides, the guard rail 100 deforms and absorbs the shock while the elastic member 210 of the present invention is elastically contracted. The elastic member 210 is absorbed by the impact bar, since the elastic member 210 has a sufficient shock absorption capacity while having a small amount of elastic deformation compared to the steel structure 220 surrounding it, the elastic member 210 absorbs most of the impact, As a result, the deformation amount of the steel structure 220 is extremely small, and only the guard rail 100 may be replaced without replacing it.

This requires only a small cost and time for the maintenance and repair of the installation and is therefore economically beneficial.

Of course, the elastic member 210 is deformed and then returned to its original state to prepare for the next collision accident.

In addition, since the elastic member 210 can sufficiently exhibit the absorbing force due to the collision with the vehicle by a small volume, it is possible to reduce the volume occupied by the apparatus 200, which is mounted on a narrow roadway. Easy to do

As described above, according to the impact mitigation device of the steel guard rail for attaching the concrete barrier according to the present invention, the impact mitigation part is composed of the steel structure and the elastic member, or by only the elastic member, so that the small deformation during collision with the vehicle It can exhibit sufficient shock absorption ability, and it can be installed even when the road width is narrow by reducing the device installation space, and it is effective for maintenance and repair after returning to the original even after a collision.

Claims (1)

In the impact mitigation device is installed to connect the guard rail 100 and the concrete barrier wall 150 is installed on the road to minimize the impact on the vehicle during a vehicle crash, A front plate 201 connected to the guard rail 100, a rear plate 202 connected to the protection wall 150 while maintaining a predetermined distance with respect to the front plate 201, and bolt connection brackets attached to both sides; The upper edges of the front plate 201 and the rear plate 202 are connected to each other, but the upper plate 203 is positioned horizontally, and the lower edges of the front plate 201 and the rear plate 202 are connected to each other. The elastic member 210 made of a rubber member is inserted into the steel structure 220 formed of the lower plate 204 formed to be inclined such that the front plate 201 side is positioned higher than the rear plate 202 side with respect to the horizontal direction. Mounting, The steel structure 220 is mounted to the concrete protection wall 150 by bolts and nuts 160, so that when the vehicle collides with the guard rail 100, the impact force by the elastic member 210 While greatly weakening, the deformation of the lower side of the guard rail (100) is large, so that the vehicle is configured to prevent the vehicle from exceeding the concrete barriers (150).