JP2013535601A - Shock absorber - Google Patents

Abstract

The shock absorber according to the present invention is installed on each of a plurality of support frames each having a reinforcing member between the first and second horizontal beams, a rear support having a vertical beam, and both side surfaces of the support frame. A guard rail, a guard rail connecting device comprising a fixed member movably installed on the support frame, a front tank installed on the front surface of the support frame, and a plurality of cushion tanks installed between the support frames. The support frame and the rear support base are connected by a wire rope to guide the linear motion of the plurality of support frames. The impact absorbing device configured as described above has an advantage that it is possible to prevent the support frame from being individually separated or disassembled by applying a wire clip portion that can connect a wire rope to the support frame.
[Selection] Figure 1

Description

  The present invention relates to an impact absorbing device, and more particularly, an impact which can protect a passenger by stopping the vehicle safely by absorbing collision energy generated at the time of collision with the vehicle as a corresponding frictional force. It relates to an absorption device.

  2. Description of the Related Art Conventionally, an impact absorbing device is one of traffic safety facilities installed at road junctions, entrances to tunnels and underground roadways, piers, and tall gates. The impact absorbing device absorbs impact energy generated when the vehicle collides with a road structure when the vehicle deviates from a normal traveling road and minimizes injury to the vehicle driver and passengers. It has a function to stop.

  Such shock absorbers effectively absorb the collision energy of the vehicle to minimize the impact applied to the vehicle and the vehicle occupant, while being easy to repair after a breakage and must be reinstalled quickly. I must.

  However, in the conventional shock absorber, the area where the damaged shock absorber is installed because it takes a lot of time for repair work after the shock absorber is damaged due to collision with the vehicle, and repair is difficult. Began to leave without safety structures.

  Conventional shock absorbers are known in the form in which guard rails are installed on rails installed on the bottom, and shock absorbers such as waste tires, airbags, and rubber chips are installed between the guard rails on both sides. Such a shock absorbing device is complicated to install and has a disadvantage in that it requires a lot of time and cost for repair because it has to be started again from the foundation work such as rail construction when it is damaged.

  Further, the conventional shock absorbing device has a disadvantage in that when the shock absorbing device is broken due to a vehicle collision, the damaged debris is left on the traveling roadway to increase the risk of a secondary accident.

  The impact absorbing device of the present invention is for solving the above-mentioned problems, and its purpose is to absorb the collision energy generated at the time of vehicle collision as a corresponding frictional force and to stop the vehicle safely. Thus, an object of the present invention is to provide an impact absorbing device that can protect a passenger.

  Another object of the present invention is to prevent the support frame from being individually separated or disassembled by applying a wire clip portion that can connect the wire rope to the support frame not only in the frontal collision of the vehicle but also in the side collision. The object is to provide an impact absorbing device.

  Still another object of the present invention is to provide an impact absorbing device that further improves the impact energy absorption efficiency at the time of a collision with a vehicle by filling the front tank and a part of a plurality of cushion tanks with a cushioning material. There is.

  Still another object of the present invention is to provide an impact absorbing device to which a shock absorbing material that can prevent the risk of a secondary accident because damaged debris is not left at the time of a collision with a vehicle.

  The shock absorbing device of the present invention is installed at intervals in a row, a plurality of support frames in which a reinforcing member is installed between the first and second horizontal beams, and one of the plurality of support frames. A rear support base integrally formed with two support frames and having a vertical beam; guard rails respectively installed on both side surfaces of the support frame; and a guard rail coupling device including a fixing member that is movably installed on the support frame. In order to guide the linear motion of the plurality of support frames, comprising a front tank installed on the front surface of the support frame and a buffer tank comprising a plurality of cushion tanks installed between the support frames The support frame and the rear support base are connected by a wire rope.

  The reinforcing member of the present invention is installed between the first and second horizontal beams, and at least one wire clip portion is installed below the first horizontal beam. The wire clip portion is a U-bolt, a wire clip that is fitted to the U-bolt and guides the wire rope, and a pair that is fitted to the upper portion of the wire clip to support the wire clip and absorb an impact. And a nut for fitting and fastening a wire clip and a pair of elastic members to the U-bolt.

  The vertical beam of the rear support base is installed on the base plate, a wire fixing plate having a plurality of fixing holes is installed below it, and a reinforcing member for supporting the vertical beam is installed on one side thereof. There is.

  The guard rail of the guard rail coupling device has a plurality of long holes formed in the longitudinal direction on the side surfaces thereof at intervals, and the fixing member of the guard rail coupling device is fitted to the fixing bolt and the fixing bolt. It consists of a spacer installed on the support frame, a washer fitted to the fixing bolt, and a nut fastened to the fixing bolt.

  In the front tank of the buffer tank according to the present invention, the first and second reflectors are installed on the front surface, and a plurality of tube-shaped buffer materials are installed on the inner side. The plurality of cushion tanks are installed on the front surface of the air outlet for discharging air to the outside, bent portions installed on the side surfaces thereof, and wire channels installed on the lower portion for guiding the wire rope. And an upper surface provided on the upper portion and having a protruding portion. In the plurality of cushion tanks, at least two of the plurality of cushion tanks are each provided with a plurality of buffer materials in the form of tubes, and the remaining cushion tanks are installed as empty hollow bodies. The

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

  The wire rope of the present invention has one side connected to a shackle connected to a support and a ring type connecting member, the other side connected to a ring type connecting member and an eyebolt, and the eyebolt is fixed by a nut.

  The impact absorbing device of the present invention has an advantage that it is possible to prevent the support frame from being individually separated or disassembled by applying a wire clip portion capable of connecting a wire rope to the support frame.

  The impact absorbing device of the present invention has an advantage that the collision energy absorption efficiency can be further improved at the time of collision with the vehicle by filling the front tank and a part of the plurality of cushion tanks with the buffer material.

  The shock absorbing device of the present invention has an advantage that the risk of a secondary accident can be prevented by applying a shock absorber in the form of a tube, because broken debris is not left at the time of collision with a vehicle.

It is a perspective view showing roughly the assembled state of the shock absorber of the present invention. It is a side view of the shock absorbing device of the present invention. It is a front view of the shock absorber of the present invention. It is sectional drawing taken on the AA line of FIG. It is a perspective view which shows the installation state of the support frame of the shock absorber of this invention. It is a perspective view which shows the connection relation of the support frame and rear surface support stand of the impact-absorbing device of this invention. It is a sectional side view for showing the installation state of the wire rope in the shock absorber of the present invention. It is a perspective view of the cushion tank which is the principal part of the shock absorber of this invention. It is a perspective view which shows the combined state of the shock absorbing material which is the principal part of the shock absorber of this invention. It is sectional drawing of the shock absorbing material which is the principal part of the impact-absorbing device according to this invention. It is a figure for demonstrating the coupling | bonding relationship of the support frame and guardrail coupling device in the impact-absorbing device according to this invention. It is a figure for demonstrating the coupling | bonding relationship of the support frame and guardrail coupling device in the impact-absorbing device according to this invention. It is a perspective view for demonstrating the coupling | bonding relationship of the support frame in the impact-absorbing device according to this invention, a guardrail, and a fixing member. It is a perspective view which shows the connection relation of the guardrail which is the principal part of this invention. It is a perspective view which shows the state which the vehicle collided with the impact-absorbing device according to this invention, and was compressed.

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

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

  The shock absorbing device according to the embodiment of the present invention includes a plurality of support frames 100, a rear support base 200, a guardrail coupling device 400, and a buffer tank 500, and guides the linear motion of the plurality of support frames 100. The support frame 100 and the rear support base 200 are connected by a wire rope 600.

  As shown in FIGS. 1 and 5, a plurality of the support frames 100 are installed at intervals in a row. 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. The seventh support frame 107 is a rear support described later. The base plate 162 and the base plate 162 are integrally installed.

  As shown in FIG. 5, each of the support frames 100, that is, the first to seventh support frames 101, 102, 103, 104, 105, 106, and 107 has a rectangular shape, and includes an upper surface and a lower surface 112, 114 and a pair of side surfaces 122 and 122 are provided. The first and second horizontal beams 132 and 134 are installed inside the support frame 100, and the reinforcing member 130 is installed between the first and second horizontal beams 132 and 134.

  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 unit 150 is installed below the first horizontal beam 132. . Here, a description will be given to a case where two wire clip portions 150 and 150 formed at a distance from each other at the lower portion of the first horizontal beam 132 are applied. However, only one is installed in the center according to a user's request. It is also possible to install two or more.

  The wire clip portion 150 includes a U-bolt 152, a wire clip 154 that is fitted to the U-bolt 152 and guides the wire rope 600, and the wire clip, as shown in the enlarged portion of the arrow in FIG. A pair of elastic members 156 that are fitted to the upper portion of 154 to support the wire clip 154 and absorb impact, and a nut that fits and fastens the wire clip 154 and the pair of elastic members 156 to the U bolt 152 158. The wire clip 154 is provided with a support groove 153 in order to reduce friction according to the shape of the wire rope 600.

  In the wire clip portion 150, the U-bolt 152 is pulled by tightening the nut 158 and the wire rope 600 is gripped, and the force pulled by the elastic member 156 is applied only by the tension of the elastic member 156. Make sure it is gripped with appropriate force.

  Since the wire clip 154 is elastically pushed by the elastic member 156 fitted to the U-bolt 152, when the support frame 100 moves due to a frontal collision of the vehicle, the collision energy is absorbed by the frictional force. At the same time, the support frame 100 serves to guide the support frame 100 so as to linearly move in the extending direction (that is, the longitudinal direction) of the wire rope 600. That is, since the wire clip 154 grips the wire rope 600, when the support frame 100 is moved, the wire clip 154 not only generates a frictional force but also serves as a guide for preventing separation.

  The wire rope 600 absorbs the collision energy by the elasticity of the wire rope 600 with respect to the side collision of the automobile, and also prevents the guard rail 300 such as the support frame 100 from being detached.

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

  The rear support 200 includes a vertical beam 210. The vertical beam 210 can be applied in various forms such as an H type and an I type. Here, the vertical beam 210 using the H type is shown. As shown in FIG. 6, the vertical beam 210 of the rear support base 200 is installed on a base plate 162, and a wire fixing plate 160 having a plurality of fixing holes 168 is installed at the lower portion 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 on the outer periphery thereof, and is fixed to the road surface by installing anchor bolts 800 in the through holes 172. An eye bolt 740 connected to one side of a ring-type connecting member 730 connected to the wire rope 600 is fixed to a fixing hole 168 installed on each side of the wire fixing plate 160 by a nut 755. By tightly tightening the wire rope 600, the wire rope 600 is tightly connected.

  The wire rope 600 is fixed by an eyebolt 740 at a fixing hole 168 of the wire fixing plate 160 through the wire clip portions 150 of the support frames 101, 102, 103, 104, 105, 106, 107. That is, as shown in FIG. 7, the one side of the wire rope 600 is connected to the shackle 710 and the ring type connecting member 720 connected to the support 700, and the other side is connected to the ring type connecting member 730 and the eyebolt 740. The eyebolt 740 is fixed by a nut 755.

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

  On the other hand, as shown in FIGS. 1, 4, and 13, the guard rail coupling device 400 is provided with the guard rails 300 installed on both side surfaces of the support frame 100, and the guard rails 300 movably installed on the support frame 100. And a fixing member 350.

  As shown in FIG. 2, a plurality of guard rails 300 are installed on both sides of the support frame 100. Here, the guard rail 300 is shown to which six guard rails 301, 302, 303, 304, 305, 306 are applied. However, the number of guard rails 300 can be increased or decreased according to the user's request. As shown in FIG. 14, the guard rail 300 is provided with a plurality of elongated holes 310 formed in the longitudinal direction on the side surface at intervals.

  As shown in FIG. 13, the fixing member 350 includes a fixing bolt 352, a spacer 354 fitted on the fixing bolt 352 and installed on the support frame 100, a washer 356 fitted on the fixing bolt 352, and the fixing And a nut 358 fastened to the 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. That is, the spacer 354 is fitted to the fixing bolt 352 and the washer 356 is further fitted to the fixing bolt 352 and tightened by the nut 358 via the through hole 126 formed in the side surface 122 of the support frame 100. A reflector 364 is installed outside the spacer 354 so that it can be identified at night.

  As shown in FIGS. 1 and 2, the guard rail 300 has a second guard rail 302 installed inside the first guard rail 301 and a third guard rail 303 installed inside the second guard rail 302. A plurality of them are sequentially installed according to the method. The reason for installing in this way is that the energy absorbed by the guard rail 300 increases as the number of guard rails 300 that push closer toward the rear side (rear) increases in the event of a vehicle collision. Thus, when the vehicle collides, as shown in FIG. 15, the vehicle is decelerated as the frictional force acting between the guard rails 300 increases while the guard rails 300 are superimposed on each other, and the collision ( Impact) Energy will be absorbed and reduced. That is, the collision energy generated when the vehicle collides is expressed as the corresponding contact pressure of the support frame 100 with the ground, the frictional force generated by the guard rail 300, the wire rope 600, and the inertial force generated by the weight of the predetermined support frame. Absorb and stop the vehicle safely.

  Meanwhile, the buffer tank 500 includes a front tank 430 installed on the front surface of the support frame 100 and a plurality of cushions installed between the support frames 100 as shown in FIGS. 1, 3, and 8. And a tank 450.

  As shown in FIG. 3, the front tank 430 of the buffer tank 500 has first and second reflectors 432 and 434 installed on the front surface thereof, and a plurality of tubes in the form of tubes as shown in FIG. The buffer material 380 is installed. The detailed configuration of the cushioning material 380 will be described later. Here, as shown in FIG. 11, the cushioning material 380 is shown in which five pieces are applied, but the number of the cushioning members 380 can be changed according to a user's request.

  As shown in FIG. 8, the cushion tank 450 is installed on the front surface 452 of the air outlet 454 for discharging air to the outside, the bent portion 464 installed on the side surface 462, and the lower portion thereof. The wire channel 470 guides the wire rope 600 and the upper surface 480 provided on the upper portion and having the protrusion 482.

  The air discharge port 454 is formed to have a diameter of about 50 mm, and a notch portion 455 formed at a position of about 10-20 mm at intervals of 90 degrees is formed on the outer peripheral edge of the air discharge port 454 so as to impact. If it comes to receive, it is comprised so that breakage may become easy centering on the notch part 455. FIG.

  The cushion tank 450 is for absorbing collision energy while being compressed by an impact applied when the vehicle collides. In other words, when the vehicle collides, the cushion tank 450 functions as an air cushion while the internal air is compressed, and the compressed air is discharged through the air discharge port 454, thereby reducing the collision energy. It becomes like this. Here, since the air discharge port 454 serves as a damper that slowly reduces the speed of the vehicle (not shown) at the time of a collision, a phenomenon that the vehicle returns to the traveling roadway due to the collision can be suppressed. The next accident can be reduced.

  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 force of pressing the cushion tank is removed by moving the vehicle after the collision of the vehicle.

  The bent portion 464 is formed in the shape of a concave groove in the longitudinal direction, and is configured to enhance compression resistance and stability when the cushion tank 450 is deformed. The wire channel 470 formed at the lower portion of the cushion tank 450 is formed to have an appropriate depth for guiding the wire rope 600 so that the wire rope 600 can be prevented from being detached. The wire channel 470 is a channel path that is extended without the wire rope 600 interfering with the support frame 100.

  On the other hand, the upper surface 480 of the cushion tank 450 is configured to have a projecting portion 482 projecting 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 provided with a plurality of tube-shaped cushioning materials 380 inside at least two of the plurality of cushion tanks, and the remaining cushion tanks. The tank is installed as an empty hollow body. As described above, the reason why the plurality of cushioning materials 380 are inserted only in the two cushion tanks installed at the rear of the cushion tank 450 is that the cushion tank 450 is moved forward in order to reduce the impact on the vehicle sequentially in the event of a vehicle collision. The cushion tank 450 is not installed.

  Here, although 18 cushioning materials 380 are inserted and applied to the two cushion tanks 450 installed at the rear, the number of cushioning materials 380 can be changed according to the user's request. . Further, the number of cushion tanks 450 into which the cushioning material 380 is inserted can be changed. The cushion tank 450 is preferably made of a synthetic resin material containing polyethylene resin.

  Meanwhile, as shown in FIG. 10, the plurality of cushioning materials 380 have a partition wall 384 formed at the center thereof, and a plurality of first coupling grooves 388 and 388 and a second coupling are formed on the upper side and one side of the side surface. A groove 398 is formed, and a plurality of first coupling protrusions 382 and 382 and a second coupling protrusion 392 are formed on the lower portion and the other side of the side surface, respectively. The cushioning material 380 is made of a soft metal material such as aluminum so that impact energy according to impact can be absorbed. The material of the buffer material 380 is not limited to this, and can be formed of an equivalent metal material such as aluminum.

  When the buffer material 380 is to be extended in the longitudinal direction (lateral direction), as shown in FIGS. 9 and 10, the second coupling protrusion 392 and the second coupling groove installed so as to face the outer peripheral surface. 398 is used to connect different cushioning materials 380 by a sliding method. When the cushioning material 380 is to be extended in the vertical direction (longitudinal direction), the pair of first coupling protrusions 382 and 382 and the pair of first coupling grooves 388 and 388 formed in the upper and lower portions are provided. The different cushioning materials 380 are connected by the sliding method.

  On the other hand, the partition wall 384 of the buffer material 380 is hollow in the longitudinal direction and has a corrugated shape. The partition wall 384 is for additionally absorbing the collision energy while being deformed together when the cushioning material 380 is deformed. The reason why the partition wall 384 is formed in the corrugated form is more in line with the compression direction than that formed in the linear form. This is because it is advantageous to disperse the applied force.

  Here, the installation of the shock absorbing device configured as described above according to the embodiment of the present invention and the operational relationship thereof will be described.

  As shown in FIGS. 1 and 2, the shock absorbing device according to the embodiment of the present invention has a rear support base 200 fixedly installed, and a shock absorber having a guard rail connecting device 400, a front tank 430, and a cushion tank 450 on the support frame 100. After the tank 500 is installed, it is installed so as 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 by the anchor bolt 800. Then, the pair of wire ropes 600 are fitted on the wire fixing plate 160 of the rear support 200 and arranged in a row. In this state, as shown in FIG. 5, the support frames 100 are arranged at predetermined intervals while the wire ropes 600 are fitted to the plurality of support frames 100.

  Guard rails 300 are installed on both sides of the support frame 100 by fixing members 350 as shown in FIGS. Then, the cushion tank 450 is inserted between the support frames 100, and then the front tank 430 is fitted. As shown in FIG. 11, a plurality of cushioning 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 after the rear support base 200. Further, the wire rope 600 is finally securely fixed.

  If a vehicle (not shown) collides with the front tank 430 with respect to the shock absorbing device as shown in FIG. 1 installed in this way, it absorbs a part of the collision energy while causing deformation, and the vehicle speed. Is slowed down. And if a vehicle advances continuously, the space between the support frames 100 will reduce, while the support frame 100 moves back.

  That is, as shown in FIG. 7, when the vehicle continues, the first support frame 101 moves, and at the same time, the first guard rails 301 installed on both sides of the support frame 101 also move together. In this process, the collision energy is once again absorbed while a frictional force is generated with the spacer 354 fixed by the fixing bolt 352 and the nut 358 of the second support frame 102. It is possible to move while being fixed by the fixing bolt 352 and the nut 358 because the elongated 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 a wire clip portion 150 installed below the support frame 100, the movement of the support frame 100 is guided by the guard rail connecting device 400 and the wire rope 600. Is done.

  Since the second guard rail 302 is installed inside the guard rail 301 that is installed first, and the third guard rail 303 is installed inside the second guard rail 302, a plurality of the guard rails are sequentially installed. The energy absorbed by the guard rail 300 increases as the number of guard rails 300 that push closer toward the rear increases.

  Thus, when the vehicle collides, as shown in FIG. 15, the vehicle is decelerated as the frictional force acting between the guard rails 300 increases while the guard rails 300 are superimposed on each other, and the collision ( Impact) Energy will be absorbed and reduced.

  The cushioning material 380 installed inside the front tank 430 absorbs the collision energy while temporarily deforming. If the vehicle continues to push the plurality of guard rails 300 rearwardly, the hollow one of the plurality of cushion tanks 450 is compressed so that the internal air is discharged to the outside through the air discharge port 454. As a result, the collision energy is absorbed. Since the notch 455 is formed on the outer peripheral edge of the air discharge port 454, the notch 455 is damaged (ie, shock absorption is performed) when the cushion tank 450 is deformed. It will absorb the shock. If the hollow cushion tank 450 is installed, a lot of deformation of the cushion tank 450 occurs due to a collision, but the repulsive force is relatively reduced, and a secondary accident occurs. This prevents the vehicle driver and passengers from being prevented.

  On the other hand, if the collision energy of the vehicle that has not been extinguished pushes the guard rail 300 to the rear, the rear cushion tank 450 in which the cushioning material 380 is installed is added to the collision energy of the vehicle while the cushioning material 380 is deformed. The vehicle stops as it absorbs all of the above.

  The impact absorbing device of the present invention absorbs the impact of the vehicle in almost three stages using the front tank 430, the hollow cushion tank 450, the cushion tank 450 provided with the cushioning material 380, and the guardrail coupling device 400. Therefore, the safety of the driver and the passenger can be reliably protected.

  The impact absorbing device of the present invention is installed at a branch point of a road, an entrance of a tunnel or an underground carriageway, a pier, a toll gate, or the like. The shock absorbing device of the present invention can be widely applied not only to the field of traffic safety facilities related to traffic safety but also to the field of safety facilities such as civil engineering, architecture, construction, harbors and aviation.

Claims (19)

A plurality of support frames installed at intervals in a row and having reinforcing members installed between the first and second horizontal beams;
A rear support that is integrally formed with one of the plurality of support frames and has a vertical beam;
Guard rails each installed on both side surfaces of the support frame, and a guard rail coupling device composed of a fixing member that is movably installed on the support frame.
A front tank installed on the front surface of the support frame, and a buffer tank comprising a plurality of cushion tanks installed between the support frames;
An impact absorbing device, wherein a support frame and a rear support base are connected by a wire rope to guide linear motion of the plurality of support frames.   The reinforcing member of the support frame is installed between the first and second horizontal beams, and at least one wire clip unit is installed below the first horizontal beam. The shock absorber described in 1.   The wire clip portion is a U-bolt, a wire clip that is fitted to the U-bolt and guides a wire rope, and is fitted to the upper portion of the wire clip to support the wire clip and absorb an impact. The impact absorbing device according to claim 2, comprising a pair of elastic members and a nut for fitting and fastening a wire clip and the pair of elastic members to the U bolt.   The vertical beam of the rear support base is installed on a base plate, a wire fixing plate having a plurality of fixing holes is installed below it, and a reinforcing member for supporting the vertical beam is installed on one side thereof. The impact absorbing device according to claim 1, wherein   The guard rail of the guard rail coupling device is installed to be movable along a plurality of long holes formed in a longitudinal direction on a side surface thereof, and a fixing bolt and a nut are fitted into the long holes. 2. The impact absorbing device according to 1.   The fixing member of the guardrail coupling device includes a fixing bolt, a spacer that is fitted to the fixing bolt and is installed on the support frame, a washer that is fitted to the fixing bolt, and a nut that is fastened to the fixing bolt. The impact absorbing device according to claim 1, wherein:   The shock absorber according to claim 6, wherein a reflector is installed outside the spacer so that it can be identified at night.   2. The impact according to claim 1, wherein the front tank of the buffer tank includes first and second reflectors disposed on a front surface thereof, and a plurality of tube-shaped buffer members disposed on the inner side thereof. Absorber.   The plurality of cushion tanks of the buffer tank are installed on the front surface thereof to discharge air to the outside, the bent portion is installed on the side surface, and the lower portion is installed on the lower portion to guide the wire rope. The shock absorbing device according to claim 1, comprising: a wire channel to be formed; and an upper surface provided at an upper portion thereof and having a protruding portion.   The impact absorbing device according to claim 9, wherein the air discharge port of the cushion tank has a notch formed on an outer peripheral edge thereof.   The plurality of cushion tanks of the buffer tank includes at least two of the plurality of cushion tanks, each of which is provided with a plurality of tube-shaped buffer materials, and the remaining cushion tanks are empty hollow bodies. The shock absorbing device according to claim 1, wherein the shock absorbing device is installed.   The shock absorbing device according to claim 1, wherein the plurality of cushion tanks of the buffer tank are made of a synthetic resin material containing polyethylene resin.   The plurality of cushioning materials are made of a soft metal material such as aluminum, a partition is formed at the center thereof, and a plurality of first coupling grooves and second coupling grooves are formed on the upper side and one side of the side surface. 11. The impact absorbing device according to claim 8, wherein a plurality of first coupling protrusions and second coupling protrusions are respectively formed on the lower portion and the other side of the side surface.   The shock absorbing device according to claim 12, wherein the partition wall of the cushioning material is hollow in the longitudinal direction and has a corrugated shape.   2. The wire rope according to claim 1, wherein one side of the wire rope is connected to a shackle connected to a support column and a ring type connecting member, the other side is connected to a ring type connecting member and an eye bolt, and the eye bolt is fixed by a nut. 2. The impact absorbing device according to 1. A plurality of support frames installed in a row at intervals, a reinforcing member is installed between the first and second horizontal beams, and at least one wire clip portion is formed below the first horizontal beam. When,
A rear support that is integrally formed with one of the plurality of support frames, has a vertical beam, and is fixed to the road surface by anchor bolts;
Guard rails each installed on both side surfaces of the support frame, and a guard rail coupling device composed of a fixing member that is movably installed on the support frame.
A front tank installed on the front surface of the support frame, and a buffer tank comprising a plurality of cushion tanks installed between the support frames;
The plurality of cushion tanks of the buffer tank include a plurality of tube-shaped buffer materials on at least two of the plurality of cushion tanks, and the remaining cushion tanks are empty hollow bodies. Installed,
The shock absorber according to claim 1, wherein the support frame and the rear support base are interconnected by a wire rope to guide linear motion of the plurality of support frames.   The wire clip portion is a U-bolt, a wire clip that is fitted to the U-bolt and guides a wire rope, and is fitted to the upper portion of the wire clip to support the wire clip and absorb an impact. The impact absorbing device according to claim 16, comprising a pair of elastic members and a nut for fitting and fastening a wire clip and the pair of elastic members to the U bolt.   The plurality of cushioning materials are made of a soft metal material such as aluminum, a partition is formed at the center thereof, and a plurality of first coupling grooves and second coupling grooves are formed on the upper side and one side of the side surfaces, respectively. The shock absorbing device according to claim 16, wherein a plurality of first coupling protrusions and second coupling protrusions are respectively formed on the lower portion and the other side of the side surface.   The impact absorbing device according to claim 16 or 18, wherein the partition wall of the cushioning material is hollow in the longitudinal direction and has a corrugated shape.

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