WO2012020975A2

WO2012020975A2 - Shock-absorbing apparatus

Info

Publication number: WO2012020975A2
Application number: PCT/KR2011/005816
Authority: WO
Inventors: 황용순; 김건태; 남경우; 김주태
Original assignee: 신도산업 주식회사
Priority date: 2010-08-11
Filing date: 2011-08-10
Publication date: 2012-02-16
Also published as: JP2013535601A; CN103069078B; EP2418325A3; KR20120015020A; CN103069078A; JP5592013B2; KR101150938B1; WO2012020975A3; EP2418325A2

Abstract

The present invention relates to a shock-absorbing apparatus, comprising: a plurality of support frames having reinforcing members arranged between a first horizontal beam and a second horizontal beam; a rear support having a vertical beam; a guard rail connection device including guard rails arranged at both sides of each of the support frames, and fixing members for coupling the guard rails to the support frames such that the guard rails are movable; and a shock-absorbing tank including a front tank installed at the front surface of each of the support frames and a plurality of cushion tanks installed among the support frames. The support frames and the rear support are connected by a wire rope so as to guide the linear motion of each of the support frames. The thus-configured shock-absorbing apparatus has a wire clip for connecting the wire rope to the support frames, to thereby prevent the support frames from becoming separated or disassembled into individual frames.

Description

Shock Absorber

The present invention relates to a shock absorbing device, and more particularly, to a shock absorbing device that can absorb the collision energy generated when a collision with the vehicle as a corresponding friction force to safely stop the vehicle to protect the occupants.

Conventionally, a shock absorber is one of traffic safety facilities installed at a junction of a road, an entrance of a tunnel or an underground road, a pier, and a toll gate. The shock absorbing device has a function of stopping the vehicle while minimizing injury to a driver or a passenger by absorbing impact energy generated when the vehicle collides with a road structure when the vehicle collides with a road structure.

Such a shock absorber should be able to effectively absorb the collision energy of the vehicle to minimize the impact on the vehicle and the occupant of the vehicle, and to be easily repaired after breakage and to be re-installed quickly.

However, the conventional shock absorber crashed with a vehicle and the shock absorber was broken, and it took a lot of time for repair work, so it was difficult to recover quickly, leaving the area where the damaged shock absorber was installed without a safety structure. .

Conventional shock absorbers are provided with guard rails provided on rails provided on the bottom surface, and shock absorbers such as waste tires, air bags, and rubber chips are installed between the guard rails on both sides, but such shock absorbers are installed. The construction is complicated, and in case of breakage, it is necessary to start again from the basic construction such as rail construction, which involves a lot of time and cost in repair.

In addition, the conventional shock absorbing device has a disadvantage in that when the shock absorbing device is damaged due to a vehicle crash, the damaged debris is left in the driving lane to increase the risk of secondary accidents.

The shock absorbing device of the present invention is to solve the above-mentioned problems, to provide a shock absorbing device that can protect the occupants by absorbing the collision energy generated during the collision of the vehicle as a friction force corresponding to the safe stopping of the vehicle. Is in point.

Another object of the present invention to provide a shock absorbing device that can prevent the support frame is separated or dismantled individually by applying a wire clip that can connect the wire rope to the support frame in the front collision as well as the side collision of the vehicle. Is in point.

Still another object of the present invention is to provide a shock absorbing device that further improves the collision energy absorption efficiency when colliding with a vehicle by filling a buffer material in a portion of a front tank and a plurality of cushion tanks.

Still another object of the present invention is to provide a shock absorbing device to which a shock absorbing material is applied, which can prevent the risk of secondary accidents because the damaged debris is not left when colliding with the vehicle.

The shock absorbing device of the present invention includes a plurality of support frames which are installed at intervals in a row and provided with reinforcing members between the first and second horizontal beams; A back support formed integrally with one support frame of the plurality of support frames and having a vertical beam; A guard rail connecting device comprising guard rails respectively installed on both side surfaces of the support frame, and a fixing member movably installed on the support frame; It consists of a buffer tank consisting of a front tank installed on the front of the support frame, a plurality of cushion tanks installed between the support frame, the support frame and the rear support to guide the linear movement of the plurality of support frames It is connected by wire rope.

The reinforcing member of the present invention is provided between the first and second horizontal beams, and at least one wire clip portion is provided below the first horizontal beams. The wire clip portion is connected to the U bolt, the wire clip for guiding the wire rope to be inserted into the U bolt, and a pair of elastic members to be fitted to the upper portion of the wire clip, to support the wire clip and absorb the impact; And a nut for fastening by inserting a wire clip and a pair of elastic members to the U bolt.

The vertical beam of the rear support is installed on the base plate, the lower portion of the wire fixing plate having a plurality of fixing holes is installed, one side thereof is provided with a reinforcing member for supporting the vertical beam.

The guard rail of the guard rail connecting device is provided with a plurality of long holes formed in the longitudinal direction at its side, the fixing member of the guard rail connecting device is fixed to the fixing bolt, the fixing bolt is installed on the support frame It consists of a spacer, a washer fitted to the fixing bolt, and a nut fastened to the fixing bolt.

In the front tank of the buffer tank of the present invention, first and second reflectors are provided on the front surface thereof, and a plurality of tube-shaped buffer members are installed inside the buffer tank. The plurality of cushion tanks are installed in the front of the air outlet for discharging the air to the outside, the bent portion is provided on its side, the wire channel is installed on the lower portion of the guide to guide the wire rope, and installed on the upper portion of the protrusion It is a point which consists of an upper surface which has. The plurality of cushion tanks are each provided with a plurality of tube-type cushioning material inside at least two or more of the plurality of cushion tanks, and the remaining cushion tanks are installed as empty hollow bodies.

The plurality of shock absorbing materials of the present invention are made of a soft metal material such as aluminum, a partition wall is formed in the center thereof, and a plurality of first coupling grooves and second coupling grooves are respectively formed on one side of the upper side and the side thereof, and a lower portion thereof. And a plurality of first coupling protrusions and second coupling protrusions, respectively, formed on the other side of the side surface.

Wire rope of the present invention is that one side is connected to the shackle and the ring-shaped connecting member connected to the support, the other side is connected to the ring-shaped connecting member and the eye bolt and the eye bolt is fixed by a nut.

The shock absorbing device of the present invention has an advantage of preventing the support frame from being individually separated or dismantled by applying a wire clip part capable of connecting the wire rope to the support frame.

The shock absorbing device of the present invention has an advantage of further improving collision energy absorption efficiency when colliding with a vehicle by filling a buffer material in a portion of a front tank and a plurality of cushion tanks.

The shock absorbing device of the present invention has an advantage of preventing the risk of secondary accidents by not leaving the debris when colliding with the vehicle by applying a shock absorber in the form of a tube.

1 is a perspective view schematically showing the assembled state of the shock absorbing device of the present invention;

Figure 2 is a side view of the shock absorbing device of the present invention,

Figure 3 is a front view of the shock absorbing device of the present invention,

4 is a cross-sectional view taken along the line A-A of FIG.

Figure 5 is a perspective view showing the installation state of the support frame of the shock absorbing device of the present invention,

Figure 6 is a perspective view showing the connection between the support frame and the rear support of the shock absorbing device of the present invention,

Figure 7 is a side cross-sectional view showing the installation state of the wire rope in the shock absorbing device of the present invention,

8 is a perspective view of a cushion tank which is a main part of the shock absorbing device of the present invention;

Figure 9 is a perspective view showing a coupling state of the cushioning material, which is a main portion of the shock absorbing device of the present invention,

10 is a cross-sectional view of the cushioning material of the main portion of the shock absorbing device according to the present invention;

11 and 12 are views for explaining the coupling relationship between the support frame and the guardrail connecting device in the shock absorbing device according to the invention,

13 is a perspective view for explaining a coupling relationship between a support frame, a guard rail and a fixing member in the shock absorbing device according to the present invention;

14 is a perspective view showing a connection relationship between the guardrails that are the main part of the present invention;

15 is a perspective view illustrating a state in which a vehicle collides with a shock absorbing device according to the present invention.

Hereinafter, a shock absorbing device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view schematically showing the assembled state of the shock absorber of the present invention, Figure 2 is a side view of the shock absorber of the present invention, Figure 3 is a front view of the shock absorber of the present invention, Figure 4 is a view 2 is a cross-sectional view taken along the AA line.

Shock absorbing device according to an embodiment of the present invention comprises a plurality of support frame 100, the rear support 200, the guardrail connecting device 400, the buffer tank 500, the plurality of support frame The support frame 100 and the rear support 200 are connected by the wire rope 600 to guide the linear motion of the 100.

As shown in FIGS. 1 and 5, the support frame 100 is provided with a plurality of spaced apart in a line. That is, as shown in FIG. 4, the support frame 100 includes first to

seventh support frames

101, 102, 103, 104, 105, 106, and 107, and the seventh support frame 107. ) Is integrally installed on the base plate 162 together with the rear support 200 to be described later.

As shown in FIG. 5, the support frame 100, that is, the first to

seventh support frames

101, 102, 103, 104, 105, 106, and 107 has a rectangular shape, respectively,

Lower surfaces

112 and 114 and a pair of

side surfaces

122 and 122 are provided. In addition, first and second

horizontal beams

132 and 134 are installed inside the support frame 100, and a reinforcement member 130 is installed between the first and second

horizontal beams

132 and 134.

In addition, the reinforcing member 130 of the support frame 100 is installed between the first and second

horizontal beams

132 and 134, and at least one wire clip portion 150 below the first horizontal beam 132. ) Will be installed. Here, the description will be made of the application of two

wire clips

150 and 150 formed spaced apart from each other below the first horizontal beam 132, but only one may be installed in the center or two or more may be provided according to a user's request. have.

As shown in the enlarged portion of the wire clip 150 by the arrow in FIG. 5, the wire clip 154 is fitted to the U bolt 152 and the wire bolt 154 to guide the wire rope 600. And a pair of elastic members 156 that are inserted into an upper portion of the wire clip 154 to support the wire clip 154 and absorb shock, and a wire clip 154 to the U bolt 152. And it is made of a nut 158 for fastening by fitting a pair of elastic members 156. In addition, the wire clip 154 is provided with a support groove 153 to reduce the friction according to the shape of the wire rope 600.

In the wire clip unit 150, the U bolt 152 is pulled by tightening the nut 158 so that the wire rope 600 is gripped so that the tension of the elastic member 156 is reduced by the force of the elastic member 156. So that it will be gripped with an appropriate force.

Since the wire clip 154 is elastically pressed by the elastic member 156 fitted to the U bolt 152, when the support frame 100 is moved due to the frontal collision of the vehicle, the collision energy is absorbed by the frictional force. At the same time it serves to guide the support frame 100 to move linearly in the extending direction (ie, the longitudinal direction) of the wire rope 600. That is, since the wire clip 154 grips the wire rope 600, the wire clip 154 serves as a guide for preventing the occurrence of friction as well as the detachment during the movement of the support frame 100.

The wire rope 600 absorbs the collision energy by elasticity of the wire rope 600 with respect to the side collision of the vehicle and prevents the departure of the guard rail 300 such as the support frame 100.

On the other hand, the rear support 200 is connected to the support frame 107 installed at the end of the plurality of support frame 100, is fixed to the road surface (ground) by the anchor bolt 800 on the base plate 162, It supports the total collision energy generated when the vehicle is crashed and prevents the shock absorber from moving.

The rear support 200 is provided with a vertical beam 210, the vertical beam 210 can be applied to a variety of shapes, such as H-type, I-type, but is shown here the vertical beam 210 to which the H-type is applied. As shown in FIG. 6, the vertical beam 210 of the rear support 200 is installed on the base plate 162, and a wire fixing plate 160 having a plurality of fixing holes 168 is installed at a lower portion thereof. On one side thereof, a reinforcing member 170 for supporting the vertical beam is installed. As shown in FIG. 7, the base plate 162 has a plurality of through holes 172 formed at its outer circumference, and is fixed to the road surface by installing anchor bolts 800 in the through holes 172. do. The eye bolts 740 connected to one side of the ring-shaped connecting member 730 connected to the wire rope 600 are fixed to the fixing holes 168 respectively installed at both sides of the wire fixing plate 160 by nuts 755. By tightly tightening the nut 755, the wire rope 600 is tightly connected.

The wire rope 600 passes through the wire clip 150 of the support frames 101, 102, 103, 104, 105, 106, and 107 to the eye bolt 740 in the fixing hole 168 of the wire fixing plate 160. To be fixed. That is, the wire rope 600, as shown in Figure 7, one side thereof is connected to the shackle 710 and the ring-shaped connection member 720 connected to the support 700, the other side of the ring-shaped connection member 730 It is connected to the eye bolt 740, the eye bolt 740 is to be fixed by the nut 755.

The wire rope 600 supports a plurality of support frames 100, and the support frame 100 absorbs impact energy through frictional force when the support frame 100 collides with the vehicle and simultaneously moves the support frame 100 in a straight line. It was applied to guide.

Meanwhile, as illustrated in FIGS. 1, 4, and 13, the guardrail connecting device 400 includes guard rails 300 installed on both sides of the support frame 100, and the guard rail 300. It consists of a fixing member 350 installed to be movable on the support frame 100.

As shown in FIG. 2, the guard rail 300 may be provided in plural on both sides of the support frame 100. Here, the guard rail 300 is shown that the six guard rails (301, 302, 303, 304, 305, 306) is applied, but the number can be further increased or reduced according to the user's request. And, as shown in Figure 14, the guard rail 300, a plurality of long holes 310 formed in the longitudinal direction on the side thereof is to be installed at intervals.

As shown in FIG. 13, the fixing member 350 includes a fixing bolt 352, a spacer 354 fitted to the fixing bolt 352 and installed on the support frame 100, and the fixing bolt 352. ) And a nut 358 fastened to the fixing bolt 352.

The fixing member 350 is installed in a plurality of through holes 126 formed on both side surfaces 122 and 122 of the support frame 100, respectively. That is, the spacer 354 is inserted into the fixing bolt 352 and passes through the through hole 126 formed in the side surface 122 of the support frame 100, and the washer 356 is additionally fixed to the fixing bolt 352. It is made of a structure that is further fitted and fastened with nuts (358). The spacer 354 is provided with a reflector 364 on the outside of the spacer 354 so as to be distinguished even at night.

As shown in FIGS. 1 and 2, the guard rail 300 includes a second guard rail 302 installed inside the first guard rail 301 and an inner side of the second guard rail 302. As such, the third guard rail 303 is installed in plural in sequence. The reason for this installation is that the energy absorbed by the guard rail 300 is increased as the number of guard rails 300 that are pushed toward the rear side (rear) during the collision of the vehicle increases. As such, when the collision of the vehicle, as shown in Figure 15, the guard rail 300 is overlapped with each other while the friction force acting between the guard rail 300 is increased to slow down the vehicle and also transmitted to the vehicle ( Shock) to absorb and reduce energy. That is, the collision energy generated when the vehicle collides with the contact pressure with the ground of the support frame 100, the friction force generated in the guard rail 300, the wire rope 600, and the like and the weight of the predetermined support frame. Absorbed by the inertial forces generated, the vehicle is safely stopped.

On the other hand, the buffer tank 500 is installed between the front tank 430 and the support frame 100, which is installed in the front of the support frame 100, as shown in Figure 1, 3 and 8 Composed of a plurality of cushion tanks 450.

As shown in FIG. 3, the front tank 430 of the buffer tank 500 is provided with first and

second reflectors

432 and 434 on its front surface, and as shown in FIG. 11 inside its tube shape. A plurality of shock absorbing material 380 is provided. The detailed configuration of the shock absorbing material 380 will be described later. Here, as shown in FIG. 11, the buffer material 380 is applied to five, but the number may be changed according to a user's request.

As shown in FIG. 8, the cushion tank 450 has an air discharge port 454 installed at a front surface 452 of the cushion tank 450 for discharging air to the outside, a bent portion 464 provided at a side surface 462 thereof, It is composed of a wire channel 470 installed at the lower portion of the wire rope 600 to guide the wire rope 600, and an upper surface 480 provided at the upper portion thereof and having a protrusion 482.

The air outlet 454 is formed to a diameter of about 50mm, the outer periphery of the air outlet 454 formed a sheath 455 formed in a sheath shape about 10-20mm at intervals of 90 degrees to be impacted When it is configured to be easily broken around the sheath 455.

The cushion tank 450 is for absorbing the collision energy while being compressed by the impact applied when the vehicle collides. That is, the cushion tank 450 is compressed as the air inside when the vehicle collides to act as an air cushion and at the same time to discharge the compressed air through the air outlet 454, the collision energy is reduced. Here, since the air outlet 454 serves as a damper to slowly reduce the speed of the vehicle (not shown) during a collision, it is possible to suppress the phenomenon in which the vehicle returns to the driving lane due to the collision, thereby reducing secondary accidents. Can be.

The cushion tank 450 is preferably made of a metallocene polyethylene resin so that the cushion tank 450 can be restored to its original form when the pressing force of the cushion tank is removed by moving the vehicle after the collision of the vehicle.

The curved portion 464 is formed in the groove shape in the longitudinal direction was configured to increase the resistance to compression and resilience when the cushion tank 450 is deformed. In addition, the wire channel 470 formed at the lower portion of the cushion tank 450 is formed at an appropriate depth to guide the wire rope 600 to prevent the wire rope 600 from being separated. In addition, the wire channel 470 is a channel (path) in which the wire rope 600 extends without interference from the support frame 100.

On the other hand, the upper surface 480 of the cushion tank 450 is configured to have a protrusion 482 protruding rearward, as shown in FIG. The protrusion 482 protrudes corresponding to the width of the support frame 100 by a predetermined length so that the support frame 100 is not exposed to the outside when the upper surface of the support frame 100 is covered.

As shown in FIG. 11, the plurality of cushion tanks 450 are each provided with a plurality of cushioning members 380 in a tube form inside at least two of the plurality of cushion tanks, and the remaining cushion tanks are hollow. Sifted. As such, the reason why the plurality of cushioning materials 380 are inserted into only two cushion tanks installed at the rear of the cushion tanks 450 is that the cushion tanks 450 installed at the front side in order to alleviate the impact on the vehicle sequentially during a collision of the vehicle. ) Is not installed.

Here, the 18 cushioning materials 380 are inserted and applied to the two cushion tanks 450 installed at the rear, respectively, but the number of the cushioning materials 380 can be changed according to a user's request. In addition, the number of cushion tanks 450 into which the shock absorbing material 380 is inserted can also be changed. And, the cushion tank 450 is preferably composed of a synthetic resin material containing a polyethylene resin.

Meanwhile, as illustrated in FIG. 10, the plurality of shock absorbing materials 380 have a partition 384 formed at the center thereof, and a plurality of

first coupling grooves

388 and 388 and a second coupling groove formed at one side of the upper side and the side thereof. 398 are formed respectively, and a plurality of

first coupling protrusions

382 and 382 and second coupling protrusions 392 are respectively formed at the lower side and the other side of the side thereof. The buffer material 380 is made of a soft metal material such as aluminum to absorb the impact energy due to the impact. The material of the buffer material 380 is not limited thereto, and may be formed of an equivalent metal material such as aluminum.

When the buffer member 380 is to be extended in the longitudinal direction (horizontal direction), as shown in FIGS. 9 and 10, the second coupling protrusion 392 and the second coupling groove 398 are disposed to face the outer circumferential surface. By using the different buffers 380 are connected in a sliding manner. In addition, when the buffer member 380 is to be extended in the vertical direction (vertical direction) by using a pair of

first coupling protrusions

382 and 382 and a pair of

first coupling grooves

388 and 388 respectively formed at upper and lower portions thereof. The different buffers 380 are connected in a sliding manner.

On the other hand, the partition 384 of the buffer member 380 is hollow in the longitudinal direction and is made of a wave form. The partition 384 is for absorbing collision energy while being deformed together when the shock absorbing material 380 is deformed, and the reason why the partition 384 is formed in a wave form is that it is advantageous in dispersing the force applied along the compression direction as compared with the straight form. Because.

Now, the installation and operation relationship of the shock absorbing device according to an embodiment of the present invention configured as described above will be described.

Shock absorbing device according to an embodiment of the present invention is fixed to the rear support 200 as shown in Figures 1 and 2, guard rail connecting device 400 and the front tank 430 to the support frame 100 ) And the cushion tank 500 having the cushion tank 450 is installed to be fixed to the road surface.

The base plate 162 of the rear support 200 is positioned at a predetermined installation position (not shown) and fixed to the anchor bolt 800. Then, a pair of wire rope 600 is inserted into the wire fixing plate 160 of the rear support 200 and arranged in a line. In this state, as shown in FIG. 5 in the plurality of support frames 100, the support frames 100 are arranged at predetermined intervals while sandwiching the wire rope 600.

Guard rails 300 are provided on both sides of the support frame 100 by the fixing member 350 as shown in FIGS. 13 and 14. Then, the cushion tank 450 is inserted between the support frames 100, and then the front tank 430 is inserted. As shown in FIG. 11, a plurality of shock absorbing materials 380 are inserted into two of the front tank 430 and the plurality of cushion tanks 450. Then, a rear plate (not shown) is installed behind the rear support 200. In addition, the wire rope 600 is finally secured.

When the vehicle (not shown) collides with the front tank 430 with respect to the shock absorbing device as illustrated in FIG. 1 installed as described above, the vehicle speed is reduced by absorbing a part of collision energy while causing deformation. In addition, if the vehicle continues to progress, the space between the support frames 100 is reduced while the support frame 100 moves backwards.

That is, as shown in Figure 7, if the vehicle continues to proceed, the first support frame 101 is moved and at the same time the first guard rail 301 installed on both sides of the support frame 101 is also moved together, The collision energy is absorbed again while the friction force is generated with the spacer 354 fixed by the fixing bolt 352 and the nut 358 of the second support frame 102 in the process. The fixing bolt 352 and the nut 358 can be moved in a fixed state since the long hole 310 is formed in the guard rail 300.

Since the plurality of support frames 100 are connected to each other by a wire rope 600 inserted into the wire clip part 150 installed at the lower portion thereof, the movement of the support frame 100 is performed by the guardrail connecting device 400 and the wires. Guided by rope 600.

The second guard rail 302 is installed inward of the guard rail 301 installed first, and the plurality of guard rails 303 is installed inwardly in the manner of installing the third guard rail 303 inward of the second guard rail 302. Therefore, the energy absorbed by the guard rail 300 increases as the number of guard rails 300 pushed toward the rear side (rear side) increases.

As such, when the collision of the vehicle, as shown in Figure 15, the guard rail 300 is overlapped with each other while the friction force acting between the guard rail 300 is increased to slow down the vehicle and at the same time the collision transmitted to the vehicle ( Shock) to absorb and reduce energy.

The cushioning material 380 installed inside the front tank 430 primarily absorbs collision energy while causing deformation. When the vehicle continuously pushes the plurality of guard rails 300 to the rear, the hollows of the plurality of cushion tanks 450 are compressed so that the internal air is discharged to the outside through the air outlet 454 by the compression. Absorb energy. Since the sheath portion 455 is formed on the outer circumference of the air outlet 454, the sheath portion 455 is broken (that is, the shock absorption is made) when the cushion tank 450 is deformed, thereby absorbing the shock. do. When the hollow cushion tank 450 is installed, many deformations of the cushion tank 450 are generated due to a collision, but the repulsive force is relatively reduced to prevent accidents secondary to protect the driver and the occupant of the vehicle. It becomes possible.

On the other hand, if the collision energy of the vehicle that has not been extinguished further back the guard rail 300, the cushion tank 450 of the rear in which the shock absorber 380 is installed, the shock absorber 380 causes a deformation of the vehicle further. It absorbs all the energy and stops the vehicle.

Shock absorbing device of the present invention by using the front tank 430, the cushion tank 450, the hollow cushion tank 450 and the cushioning material 380 is installed, and the guardrail connecting device 400 in almost three steps of the vehicle By absorbing the shock, it is possible to reliably protect the driver and passengers.

The shock absorbing device of the present invention is installed in a junction of a road, an entrance of a tunnel or an underground road, a pier, a toll gate, or the like. In addition, the shock absorbing device of the present invention can be widely applied to the field of safety facilities such as civil engineering, construction, construction, harbor, aviation as well as the field of traffic safety facilities related to traffic safety.

Claims

A plurality of support frames which are installed at intervals in a line and provided with reinforcing members between the first and second horizontal beams;

A back support formed integrally with one support frame of the plurality of support frames and having a vertical beam;

A guard rail connecting device comprising guard rails respectively installed on both side surfaces of the support frame, and a fixing member movably installed on the support frame;

It consists of a buffer tank consisting of a front tank installed on the front of the support frame, a plurality of cushion tanks installed between the support frame,

Shock absorber, characterized in that the support frame and the rear support is connected by a wire rope to guide the linear movement of the plurality of support frames.
The method of claim 1,

The reinforcing member of the support frame is provided between the first and the second horizontal beam, the shock absorbing device, characterized in that at least one wire clip portion is provided below the first horizontal beam.
The method of claim 2,

The wire clip portion is a U bolt, a wire clip for guiding the wire rope by being inserted into the U bolt, a pair of elastic members that are fitted to the upper portion of the wire clip, to support the wire clip and absorb shock; Shock absorbing device comprising a nut for fastening the wire clip and a pair of elastic members to the U bolt.
The method of claim 1,

The vertical beam of the rear support is installed on the base plate, the lower portion of the wire fixing plate having a plurality of fixing holes is installed, one side of the shock absorber, characterized in that the reinforcing member for supporting the vertical beam is installed.
The method of claim 1,

The guard rail of the guardrail connecting device is installed to be movable along a plurality of long holes formed in the longitudinal direction on its side, the shock absorbing device characterized in that the fixing bolt and the nut is fitted in the long hole.
The method of claim 1,

The fixing member of the guardrail connecting device is a shock bolt, characterized in that consisting of a fixing bolt, the spacer is fitted to the fixing bolt is installed on the support frame, the washer is fitted to the fixing bolt, and the nut is fastened to the fixing bolt. Absorber.
The method of claim 6,

The spacer is a shock absorbing device, characterized in that the reflector is installed so that it can be distinguished even at night.
The method of claim 1,

The front tank of the buffer tank is a shock absorbing device, characterized in that the first and the second reflector is installed on its front surface, a plurality of shock absorbing material in the form of a tube is installed inside.
The method of claim 1,

A plurality of cushion tanks of the buffer tank are installed in the front of the air outlet for discharging the air to the outside, the bent portion is provided on its side, the wire channel is installed in the lower portion to guide the wire rope, and installed on the top Shock absorber, characterized in that consisting of an upper surface having a projection.
The method of claim 9,

The air outlet of the cushion tank is a shock absorbing device, characterized in that the sheath is formed on the outer circumference.
The method of claim 1,

A plurality of cushion tanks of the buffer tank is a shock absorbing device, characterized in that each of the plurality of cushion tanks are provided with at least two of the plurality of cushion tanks in the form of a tube, and the remaining cushion tank is installed as an empty hollow body.
The method of claim 1,

The cushion tank of the buffer tank is a shock absorbing device, characterized in that made of a synthetic resin material containing polyethylene resin.
The method of claim 8 or 10,

The plurality of buffer members are made of a soft metal material such as aluminum, a partition wall is formed in the center thereof, and a plurality of first coupling grooves and second coupling grooves are formed on one side of the upper side and the side thereof, respectively, and the lower and side surfaces thereof. The shock absorbing device, characterized in that a plurality of first coupling protrusions and second coupling protrusions are formed on the other side, respectively.
The method of claim 12,

The shock absorbing device, characterized in that the partition of the cushioning material is hollow in the longitudinal direction and made of a wave form.
The method of claim 1,

The wire rope is shock absorbing device, characterized in that one side thereof is connected to the shackle and the ring-shaped connecting member connected to the support, the other side thereof is connected to the ring-shaped connecting member and the eye bolt and the eye bolt is fixed by a nut.
A plurality of support frames which are installed at intervals in a line and are provided with reinforcing members between the first and second horizontal beams, and at least one wire clip portion formed under the first horizontal beams;

A back support formed integrally with one of the support frames of the plurality of support frames, having a vertical beam, and fixed to the road surface by anchor bolts;

A guard rail connecting device comprising guard rails respectively installed on both side surfaces of the support frame, and a fixing member movably installed on the support frame;

It consists of a buffer tank consisting of a front tank installed on the front of the support frame, a plurality of cushion tanks installed between the support frame,

A plurality of cushion tanks of the buffer tank is provided with at least two of the plurality of cushion tanks each of the plurality of cushioning material in the form of a tube, and the remaining cushion tank is installed as an empty hollow body,

The support frame and the rear support is shock absorbing device, characterized in that interconnected by a wire rope to guide the linear movement of the plurality of support frames.
The method of claim 16,

The wire clip portion is a U bolt, a wire clip for guiding the wire rope by being inserted into the U bolt, a pair of elastic members that are fitted to the upper portion of the wire clip, to support the wire clip and absorb shock; Shock absorbing device comprising a nut for fastening the wire clip and a pair of elastic members to the U bolt.
The method of claim 16,

The plurality of buffer members are made of a soft metal material such as aluminum, a partition wall is formed in the center thereof, and a plurality of first coupling grooves and second coupling grooves are formed on one side of the upper side and the side thereof, respectively, and the lower and side surfaces thereof. The shock absorbing device, characterized in that a plurality of first coupling protrusions and second coupling protrusions are formed on the other side, respectively.
The method of claim 16 or 18,

The shock absorbing device, characterized in that the partition of the cushioning material is hollow in the longitudinal direction and made of a wave form.