KR101687830B1 - Reinforced vehicle crash barrier - Google Patents

Abstract

In the present invention, a conventional reinforced cable is used as a reinforcing means for buffering an initial impact by replacing an existing fixed nut with a new type of nut by using a cable fixing means, By adding a steel pipe device or a spring device, it is possible to prevent the vehicle from falling off in the event of a vehicle collision by further improving the performance of the barrier fence by dispersing the collision energy in double triple using compressive deformation of the spring or buckling deformation or tearing deformation of the steel pipe. And an object of the present invention is to provide an improved vehicle shock absorbing protective fence which is capable of effectively absorbing an impact force caused by a vehicle collision, with the aim of reducing the damage of the occupant and the damage of the vehicle to a minimum and returning the vehicle to the normal traveling direction.
The present invention is also intended to provide an improved vehicle shock absorbing reinforcing fence that provides an effect that meets the criteria of the vehicle protection fence performance evaluation standard.

Description

≪ Desc / Clms Page number 1 > Reinforced vehicle crash barrier &

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reinforcing a vehicle protection fence and a reinforced vehicle protection fence, and more particularly, to a method for improving the performance of a conventional vehicle protection fence without applying the latest specification, The present invention relates to a vehicle shock-absorbing protective fence further comprising a reinforcing cable and an energy dissipating device to further enhance the performance of the vehicle protective fence.

The term "guarded fence" is defined as "the accessory of the road" in the "Road Law Act 3" and the "Road Act Enforcement Decree No. 1, 3", and the vehicle that is misguided in the traveling direction is outside the roadway, opposite roadway, It is a facility that prevents departure or restores the vehicle to the normal traveling direction. These protective fences are installed for the purpose of preventing accidental departure of the vehicle from the road such as the sidewalk while reducing the injury of the passenger and the damage of the vehicle.

As a result, the Ministry of Land, Transport and Maritime Affairs revised the Guidelines for the Establishment and Management of Road Safety Facilities in November 2012, expanding the existing seven grades to nine grades, and strengthening safety standards to use shock- Respectively.

For example, the SB4 performance grade fencing standard requires that a 14-ton vehicle be able to withstand a collision of 15 km / h at a speed of 65 km / h.

However, the road extension of Korea is 105,931km as of 2011, but the extension of the protection fence is about 21,000km, which is about 20% of the total road extension, and about 19,000km (90%) is the protection fence applied the previous standard. This can be regarded as an unprotected protection fence to which standard specifications were applied before recent performance evaluation standards such as 'road safety facility installation and management guidelines' were established in November, 2012.

Due to the lack of performance standards for such unprotected protective fences, it is a reality that the vehicle frequently breaks through the steel fence and guardrail and the passenger is injured.

In order to solve the problem of the unprotected protection fence described above, when the performance is verified through the collision test, the replacement cost is about 3 trillion won for the nationwide and about 4000 billion won for the Chungcheong region (the replacement cost is 1.5 billion / km) It is known that a huge budget is needed.

Therefore, in order to improve the performance of the existing guard fence efficiently by using a limited budget, economical improvement techniques are needed.

KR Patent Publication No. 10-2007-0008866 (January 18, 2007) KR Patent Registration No. B1 10-1198826 (2012.11.01.)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a method and system for efficiently absorbing an impact force caused by a vehicle collision by dispersing the impact force generated in a vehicle collision stepwise through a reinforcing cable and an energy dissipating device, And to provide an improved vehicle shock-absorbing protective fence.

Another object of the present invention is to provide an improved vehicle shock absorbing barrier for a conventional vehicle protection fence by providing reinforcing cables on the back of the existing security fence, .

Another object of the present invention is to provide a method for further improving the performance of a security fence by providing an energy dissipating device for further reinforcing impact absorption through spring compression deformation or buckling deformation of a steel pipe when the reinforcing cable is installed .

According to an aspect of the present invention, there is provided a vehicle security fence including a support and a guardrail, the reinforcing cable extending horizontally along a rear surface of the guardrail, the reinforcement cable passing through an eye nut installed on the support; An energy dissipating device through which the reinforcing cable passes; And a coupling member located on both sides of the support through the support and connected to one ends of the energy dissipating device at one end and connected to the guard rail at the other end, The cable is absorbed by the reinforcing cable and the cable penetrating through the eye nut provided on the strut is stretched while being deformed at an angle to the back of the cable, And the angle of the connecting member is deformed to dissipate the energy.
The energy dissipating device may further include a rod-shaped steel pipe device surrounding the cable, wherein the right and left sides of the steel pipe device are connected to the guardrail side by the connecting member When the cable is deformed due to the impact of the vehicle, buckling deformation or tearing deformation is caused by an angle change of the connecting member.
The energy dissipating device may be an elastic spring device for enclosing the cable. The spring device may be constructed such that right and left sides of the spring device are connected to the guard rail by the connecting member, Side nuts so as to reinforce the absorption of impact in accordance with compression deformation of the spring when the cable is deformed due to the impact of the vehicle.
The spring device is constructed by connecting the cable, the wedge, the wedge grip ring, and the fixed end cap. When the tensile force of the cable is generated by the impact of the vehicle, Wherein the wedge is formed in a geometric shape so that an inner side of the wedge can increase the fixation force of the cable to fix the cable, Wherein the fixed end cap has a through-hole penetrating the cable in a cylindrical shape having an inner diameter larger than the other end of the spring device, and the wedge And the spring device coupled with the coupling member That can be characterized.

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The present invention provides a vehicle shock absorbing protective fence for reinforcing a conventional reference standard vehicle protection fence by replacing the fixing nut of the existing security fence with a new type of inundation, And it is possible to install the existing fence without disassembly process of the existing fence, so that it is easy to construct, so that it is excellent in workability and economical efficiency.

In addition, the vehicle shock absorbing protective fence according to the present invention is characterized in that the additional energy dissipating means adds a protection device using a shock absorption method such as a spring compression deformation or a buckling deformation of a steel pipe, so that the impact energy is dispersed and reduced secondarily in a vehicle collision, And to provide an effect that satisfies the performance evaluation standard of the vehicle protection fence.

In addition, by using the vehicle shock absorbing barrier fence reinforcement method of the present invention, it is possible to easily manufacture a vehicle barrier fence having improved performance and meeting specifications.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an illustration of a typical conventional guardrail-style guard fence;
BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a guard rail,
3 is a flow diagram illustrating a method for reinforcing a vehicle security fence in accordance with an embodiment of the present invention.
4 is an exemplary view showing the replacement of a nut coupling of a conventional guardrail-type protective fence according to an embodiment of the present invention with an eye nut.
FIG. 5A is a perspective view of a reinforced protective fence to which a reinforcing method of a vehicle protection fence using a tearing deformation of a steel pipe device according to an embodiment of the present invention is applied; FIG.
FIG. 5B is a plan view of FIG. 5A. FIG.
Fig. 5c is a perspective view showing a connection form of the connecting member for utilizing the buckling deformation of the steel pipe device. Fig.
FIG. 5D is a plan view of FIG. 5C. FIG.
6 is an exemplary view showing an energy dissipation principle using a buckling deformation of a reinforced steel pipe device;
FIG. 7A is an exploded view and a perspective view of a fixing device showing a method of assembling a spring device in a method of reinforcing a vehicle security fence according to an embodiment of the present invention. FIG.
FIG. 7B is a plan view of FIG. 7A. FIG.
Fig. 7C is an exemplary view showing an energy dissipation principle using compression deformation of a spring device. Fig.
FIG. 8 is an exemplary view showing cable fixing at the outermost lower end of the support according to an embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, a description will be given of a method for reinforcing a vehicle security fence according to the present invention and an embodiment of a reinforced vehicle security fence.

The present invention aims at preventing a vehicle departing from a normal traveling route during traveling from escaping out of the way, into a lane or a sidewalk, and at the same time reducing the damage of the occupant and the breakage of the vehicle to a minimum, Initiated improved vehicle protection fence.

FIG. 1 is an exemplary view showing a conventional conventional guardrail type protective fence, and FIG. 2 is a rear view of FIG. 1 showing a state of a nut of a conventional guardrail type protective fence.

As shown in the figure, a general guardrail-type guard fence is a guard fence for fixing the guard rail 20 to the strut 10 and a plurality of struts 10 which are vertically buried and fixed at regular intervals. The guard fences are connected to each other by connecting adjacent ends of the guard rails 20 and fastening the screws and the fixing nuts 30 on both sides.

However, in general, if a guard fence having only a guard rail form coupled by the support 10 and the support 10 is an unprotected security fence to which the standard is applied before the latest performance evaluation standard is established, It is possible that frequent occurrences of a vehicle crash that breaks through an iron fence and guard rail and injures the passenger.

Therefore, the present invention provides a reinforcing cable 50 and an energy dissipating device for enhancing the performance of a conventional vehicle protection fence without applying the latest standard through the reinforcement of a general protection fence for carrying out the above- It is intended to provide a protective fence that further enhances the performance of the fence or conforms to a more robust design specification.

FIG. 3 is a flowchart illustrating a method for reinforcing a vehicle security fence according to an embodiment of the present invention. As shown in FIG. 3, a method of reinforcing a security fence includes steps of replacing an eye nut (S100), connecting a cable (S200) (S300) and a cable fixing step (S400).

The eye nut replacing step S100 is a step of replacing the fixing nut 30 which is the connecting means of the guard rail 20 with the eye nut 40 in the existing guard fence, And a function as a cable fixing means.

4 is an exemplary view showing the replacement of a nut coupling of a conventional guardrail-type protective fence according to an embodiment of the present invention by an eye nut.

As shown in the figure, in the replacing step (S100), the fixing nut (30), which is the connecting means of the guard rail (20), is replaced with the eye nut (40) Side ear nuts 40a which are provided along the rear side of the guard rails 20 and which are connected to the guard rails 20 in the struts 10 so as to penetrate the cables 50, (40b) is replaced with the eye nut (40) of the present invention.

 The eye nut 40 is in the form of a round ring that is compatible with the fixing nut 30 and is fixedly engaged with the bolt and is inserted into the guard rail 20 through the side surface of the guard rail 20 It is a female thread.

For the sake of convenience of the present invention, the eye nut 40 is divided into the guard rail side eye nut 40a and the holding side eye nut 40b, but this is the same eye nut having the same structure.

 Therefore, it is possible to efficiently improve the performance of the existing guard fence by using a limited budget without disassembling or replacing the existing guard rail type guard fence.

The fixed nut 30 may be replaced with the eye nut 40 of the present invention in accordance with the number of the cables 50. In this embodiment, .

The cable connecting step S200 is a step of inserting the reinforcing cable 50 of the present invention through the holding-side eye nut 40b of the strut 10 applied in the step of replacing the eye nut (S100). At this time, a steel pipe device 60 or a spring device 70, which is an energy dissipating device used as an energy dissipating means, is inserted into the holding side eye nut 40b together with the cable 50.

The energy dissipating device is a steel pipe device 60 using a buckling deformation or a tearing deformation of a steel pipe or a spring device 70 using compressive deformation of the spring for reinforcing impact absorption when a tensile force of a cable 50 is generated by a vehicle floor, Lt; / RTI >

The energy dissipation is a phenomenon in which impact energy generated when a vehicle is impacted is dispersed and reduced.

The energy dissipating means mounting step S300 includes attaching the connecting member 80, which is one of the energy dissipating means, to the guard rail side on the left side of the guard rail side eye nut 40a and to the right side of the guard rail side eye nut 40a, and the other end is connected to the energy dissipating device through which the cable 50 is inserted.

The connecting member 80 is a steel member and has one end fixed to the guard rail side eye nut 40a of the guard rail 20 and the other end being coupled to the energy dissipating device having the cable 50 inserted therein, When the tensile force of the connecting member (50) is generated, a deforming force is generated in the energy dissipating device due to an angle change of the connecting material (80).

In the cable fixing step S400, the end of the cable 50 is connected to the outermost lower end of the strut 10, and the tension of the cable 50 is adjusted and firmly fixed using fixing means such as a turnbuckle .

FIG. 5A is a perspective view showing a reinforced protective fence to which a method of reinforcing a vehicle security fence using a tearing deformation of a steel pipe apparatus according to an embodiment of the present invention is applied, FIG. 5B is a plan view of FIG. 5A, The reinforced vehicle protection fence of the first embodiment has a structure in which the cable 50 penetrating through the support-side eye nuts 40b replaced in the fixing nut 30, the steel pipe device 60 as the energy dissipating device, and the guard rail- And a connecting member 80 connected to the steel pipe apparatus 60 so as to be reinforced in the form of a conventional guardrail.

The cable 50 is a reinforcement wire formed by twisting a plurality of strands of steel wire and is constituted by a holding side eye nut 40b in which a fixing nut 30 as fixing means engaged with the guard rail 20 at the center of the pillar 10 is replaced And is installed transversely to the guard rail 20.

The cable 50 may be installed on the side surface of the guard rail 20 through a plurality of cables 50 arranged in one or more rows.

One end of the connecting member 80 is connected to the guard rail side eye nut 40a of the guard rail 20. The other end of the connecting member 80 is connected to the steel pipe device 60, which is an energy dissipating device in which the cable 50 is inserted. Can be seen.

In addition, various types of energy dissipation may be used in the steel pipe apparatus 60, which is the energy dissipating means, depending on the connection form of the connecting material 80.

5A shows a connection form of the coupling member 80 for utilizing the tearing deformation of the steel pipe and the coupling member 80 is connected to the guard rail side eye nut 40a of the guard rail 20 at one end And the other end of which is connected to a steel pipe device 60 which is an energy dissipating device in which the cable 50 is inserted. The ring connecting means is provided on the outer surface of the steel pipe device 60, And the other end is connected to the outer surface of the steel pipe apparatus 60 so that deformation of the ring connecting portion may be generated when the connecting member 80 is pushed and the angle is deformed.

The tearing deformation means that the connection between the respective connecting members 80 and the ends of the steel pipe apparatus 60 is connected to induce tearing of the steel pipe and reinforces the shock absorption by the action of tearing at the end of the steel pipe.

FIG. 5C is a perspective view showing a connection form of the connecting material for utilizing the buckling deformation of the steel pipe apparatus, and FIG. 5D is a plan view of FIG. 5C.

5c, the connecting material of the connecting material is connected to the guard rail side eye nut 40a of the guard rail 20 at one end thereof, The method of connecting the other end of the coupling member 80 to the steel pipe unit 60 which is the same as the energy dissipating unit in which the cable 50 is inserted is characterized in that the diameter of the connecting member 80 is larger than the diameter R1 of the steel pipe unit 60 R2 is connected to the steel pipe device 60 while buckling the cable 50 so that buckling deformation may occur.

R0 is the inner diameter of the connecting member 80, R1 is the diameter of the steel pipe apparatus 60, R2 is the outer diameter of the connecting member 80, and R0 <R1 <R2.

The buckling deformation refers to a phenomenon in which the compression member is bent or deformed when a compression force acts on the compression member.

6 is an exemplary view showing an energy dissipation principle using a buckling deformation of a reinforced steel pipe device.

When the energy dissipating device reinforced as shown in FIG. 6 is the steel pipe device 60 and the connecting material 80 is connected to use the buckling deformation of the steel pipe, the impact force generated by the vehicle impact is transmitted to the guard rail 20 by the guard rail 20 The impact is absorbed by the car, and the impact is absorbed by the reinforced cable 50, which is installed additionally, and if the impact force is considerably large, the tensile force that causes the cable 50 to stretch is generated.

When the tensile force of the cable 50 is generated, the coupling member 80 may be subjected to a force of pushing the cable 50 as shown by (1) due to the pushing force of the cable 50. At this time, The steel pipe device 60 is subjected to a force to reduce its length in accordance with the deformation of the angle of the connecting material 80. As a result, The force to reduce the length acts on the steel pipe apparatus 60 to cause a repulsive force, and the steel pipe apparatus 60 has a buckling deformation or a tear deformation as in (3). Thereby, the steel pipe apparatus 60 absorbs the energy due to the impact of the vehicle while performing the energy dissipation according to the deformation.

FIG. 7A is an exploded view and a fixing perspective view showing a spring device attachment method in a method for reinforcing a vehicle security fence according to an embodiment of the present invention, and FIG. 7B is a plan view of FIG. 7A.

7A, the spring device 70 is connected to the cable 50 inserted through the supporting-side eye nut 40b at one end thereof in a wedge-shaped manner and at the other end to the fixed end cap 73, 80 so that the fixed end cap 73 can perform a latching action.

The wedge coupling is a coupling structure in which the cable 50 is fixedly fixed by using the wedge 71 and the wedge grip ring 72 having a geometric pattern and the spring device 70 is fitted to the wedge 71 .

The wedge 71 is a cable fixing socket that can firmly fix the cable 50 from the inside and allows the spring device 70 to be fitted to the outside.

The wedge grip ring 72 is inserted into the groove around the wedge 71 on the outer circumferential surface of the wedge 71 while the cable 50 is connected to the wedge 71, It is a cable fixation ring that strongly ties up.

The fixed end cap 73 is formed in a shape of a cap larger than the diameter of the coupling member 80 so that the cable 50 penetrates and the spring device 70 can be engaged and buffered by the coupling member 80. [ It is a cover.

7C is an exemplary view showing an energy dissipation principle using compression deformation of a spring device.

When the cable 50 is pulled in the direction of the tensile force when the cable 50 is pulled due to the impact of the vehicle as shown in the drawing, the coupling member 80 is pushed to deform the angle, The spring device 70 is subjected to a force that tends to become smaller in length.

The fixed end cap 73 connected to the spring device 70 is caught by the coupling member 80 due to the change in the angle of the cable 50 due to the tension of the cable 50, The spring device 70 has a repulsive force that tends to be reduced in length. Then, the spring device 70 is repulsive to cause compressive deformation of the spring, so that the energy absorption of the cable 50 can be further reinforced.

FIG. 8 is an exemplary view showing a cable fixing at the outermost bottom of the support according to an embodiment of the present invention, wherein the cable 50 is fixed to the lower end of the support 10 using cable fixing means, And a turnbuckle bolt 90 connected to the turnbuckle type nut.

The turnbuckle type adjusts the tension of a wire or a wire. When a cable 50 such as a rope or a wire is pulled tightly, a turnbuckle type nut and a turnbuckle bolt 90 are engaged with each other to tighten the nut I can pull it tight.

As described above, the secondary impact absorption of the reinforcing cable 50, which additionally provides the impact force generated in the event of a vehicle collision to the reinforced vehicle protection fence of the present invention along with the shock buffer by the guard rail 20, So that the vehicle can be prevented from being separated from the vehicle by simultaneously dispersing the collision energy, and at the same time, the accident of the occupant and the breakage of the vehicle are minimized and the vehicle is returned to the normal traveling direction. An improved vehicle shock absorber provides a protective fence.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

10: Holding
20: Guard rail
30: Fixing nut
30a: Fixing nut on the guard rail side
30b: Holding side fixing nut
40: Eye nut
40a: Guard rail side eye nut
40b: Holding side eye nut
50: Cable
60: Steel pipe device
70: Spring device
71: Wedge
72: Wedge Grip Ring
73: Fixed end cap
80: Connector
90: turnbuckle bolt

Claims (7)

In a vehicle protection fence comprising a support (10) and a guardrail (20)
A reinforcing cable 50 extending horizontally along the rear surface of the guard rail 20, the reinforcing cable 50 passing through an eye nut provided on the support ;
An energy dissipating device through which the reinforcing cable (50) passes; And
And a connecting member (80) located on both sides of the support (10) and having one end connected to the left and right sides of the energy dissipating device and the other end connected to the guard rail,
An impact force generated due to a vehicle impact is firstly buffered by the guard rail 20 and secondarily absorbed by the reinforcing cable 50,
When the cable (50) passing through the eye nut (20) installed on the support is stretched while being deformed backward, the coupling member (80) through which the cable penetrates is also pushed by the pushing force of the cable (50) And an angular deformation of the connecting member is generated to dissipate the energy.
Vehicle protection fence.
The method according to claim 1,
And a guard rail side eye nut (40a) installed along the rear surface of the guard rail (20)
The energy dissipating device is a rod-shaped steel pipe device 60 that surrounds the cable 50. The right and left sides of the steel pipe device are connected to the guardrail-side eye nut 40a by the connecting material 80, Characterized in that when the cable (50) is deformed due to impact, buckling deformation or tearing deformation is caused by an angle change of the connecting material (80)
Vehicle protection fence. delete delete The method according to claim 1,
And a guard rail side eye nut (40a) installed along the rear surface of the guard rail (20)
The energy dissipating device is an elastic spring device 70 for enclosing the cable 50. The spring device 70 is connected to the guard rail side in the right and left sides by the connecting member 80,
Characterized in that when the cable (50) is deformed due to the impact of the vehicle, the elasticity of the shock is reinforced by the compressive strain of the spring
Vehicle protection fence.
6. The method of claim 5,
The spring device 70 is constructed by connecting the cable 50 with the wedge 71, the wedge grip ring 72 and the fixed end cap 73, and generates a tensile force of the cable 50 due to the impact of the vehicle The shock absorption is reinforced by using the compression deformation of the spring due to the change of the angle of the coupling member 80,
The wedge 71 is formed in a geometric shape so as to increase the fixation force of the cable 50, and fixes the cable 50,
The wedge grip ring 72 is inserted into the peripheral groove of the wedge 71 in a state where the cable 50 is passed through the wedge 71, It is a fusiform ring,
The fixed end cap 73 has a through-hole penetrating the cable 50 in a cylindrical shape having a larger inner diameter than the other end of the spring device 70, and the spring device 70, which is engaged with the wedge 71, The connecting member 80 may be a stopper for allowing the connecting member 80 to engage with the connecting member 80
Vehicle protection fence.
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