KR20020090039A - Guard rail for bridge and overpass - Google Patents

Abstract

PURPOSE: A guide rail for a bridge or high level road is provided to maximize a shock absorbing ability thereof by using a buffer material and an air pressure. CONSTITUTION: The guide rail for a bridge or high level road comprises a first shock absorbing member(100) for absorbing and dispersing the shock of a collision between a car and the guide rail with a buffer member; a second shock absorbing member(200) coupled to the first shock absorbing member for repeatedly absorbing the shock by using an air pressure; and a fence(300) for supporting the first and second shock absorbing members.

Description

Guard rail for bridge and overpass}

The present invention relates to a guardrail for bridges and elevated roads, particularly when installed on bridges, overpasses, or curved roads that may cause a car crash, using shock absorbers and air pressure to maximize impacts when a car collides with the guardrail. It relates to absorbing bridges and overpass guardrails.

Generally, the guardrail is mainly installed on the side of a road such as a pier, an overpass or a curve to prevent a vehicle from falling down a bridge or a cliff outside a road due to inadvertent driving or traffic accident. This is to prevent large-scale accidents and casualties that occur.

Until now, the guard rail used for the above uses is made of high-strength steel and fixedly installed on the left and right road surfaces, so that the purpose of preventing the accidental departure from the road of an accident is not to absorb the shock generated during the accident. Designed for.

Therefore, the vehicle was not able to withstand the impact of the vehicle during the impact of the vehicle, the guardrail was crushed, or in severe cases pulled out the original function of the guardrail was not properly performed.

As a result, when a vehicle collides with the guardrail, the vehicle breaks through the guardrail and falls under a bridge or a cliff, thereby causing a large traffic accident and a life-saving accident.

Therefore, in recent years, a shock absorbing guardrail has been disclosed to protect the driver while the guardrail absorbs the shock generated when the vehicle hits the guardrail by itself and reduces the degree of damage to the vehicle.

However, the conventional guardrail has a problem of causing a large accident that causes a lot of human physical damage on bridges, overpasses, and curved roads because the function of absorbing a shock in a vehicle crash is not so high by only buffering by the elastic modulus of the material itself.

The present invention is to solve the above problems, the impact generated during the collision with the double shock absorption to absorb and disperse the impact by the cushioning material primarily in the case of the guardrail collision of the vehicle and secondaryly by the air pressure. Its purpose is to provide bridges and overpass guardrails that can reduce the damage of large traffic accidents and human accidents caused by accidents.

1A and 1B are exploded and assembled perspective views of the first absorbing means according to the present invention.

2 is an exploded perspective view of the second absorbing means according to the present invention.

3 is a perspective view of the guardrail according to the present invention.

4 is a front cross-sectional view of FIG. 3.

<Description of the symbols for the main parts of the drawings>

100: first absorbing means 110, 120: panel

112,122: fastening hole 114,124,152: connecting hole

116,126,162: finishing hole 130: cushioning material

140: fastening member 150: connector

160: finishing material 200: absorption means

210: corrugated pipe 212: through hole

220,260 Fixture 222,262 Flange

224,264: fixing hole 226: male thread

228,268: engaging protrusion 229: packing

230 housing 232 flange

234: fixing hole 236: injection hole

240: heat dissipation tube 242: injection hole

250: cylinder 252: injection hole

254: female thread 266: coupling hole

270: Piston 272: Piston Ring

274: coupling hole 280: pedestal

290: sealing member 300: support fence

GR: Guardrail

In order to achieve the above object, the present invention is the first absorbing means for absorbing and dispersing the impact by the cushioning material when the vehicle collides, and the first absorbing means is coupled to the first absorbing means to absorb the impact of the vehicle again by the air pressure The second absorbing means, and the second absorbing means is provided to provide a bridge and overpass guardrail comprising a support fence for supporting the first absorbing means and the second absorbing means.

The present invention also provides a first absorbing means, a shock absorbing material for absorbing and dispersing an impact, a panel enclosing the shock absorbing material from the outside, a connector pipe that is extrapolated to the panel to connect neighboring panels to each other, both ends of the panel It consists of a finishing material that prevents finishing.

The present invention also provides a second absorbing means comprising: a cylinder having a fixture fixed to the support fence, an injection port inserted into the fixture and capable of injecting air, a piston capable of reciprocating through the cylinder, and the piston It is composed of a fixing member coupled to the fixing the first absorbing means, and the sealing member to block the inlet.

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

1A and 1B are exploded and assembled perspective views of the first absorbing means according to the present invention.

2 is an exploded perspective view of the second absorbing means according to the present invention.

3 is a perspective view of the guardrail according to the present invention.

4 is a front cross-sectional view of FIG. 3.

As illustrated in FIGS. 1A and 1B, when the vehicle collides with the guard rail GR, the first absorbing means 100 which is in contact with the vehicle to absorb and disperse the impact primarily is bent at a right angle. The panels 110 and 120 are configured to the left and right, and the shock absorbing material 130 such as urethane or silicone material for fractionally dispersing the impact is interposed therebetween.

Each of the panels 110 and 120 surrounding the shock absorbing material 130 is formed with fastening holes 112 and 122 that correspond to each other, and the panels 110 and 120 are coupled to each other by the fastening member 140.

The guard rail GR is installed along the road, and for this purpose, the panels 110 and 120 need to be connected to each other by using the connection pipe 150.

The connecting pipe 150 is formed in a substantially rectangular tube shape so that the connection holes 152 are formed to match the positions of the connecting holes 114 and 124 formed in the panel so that the adjacent panels 110 and 120 are coupled to each other by the fastening member 140. .

The neighboring panels 110 and 120 are long connected by inserting both connecting portions of the panels 110 and 120 into the connecting pipe 150 to match the connecting holes 114, 124 and 152, respectively, and inserting the fastening member 140 into the connecting holes.

By closing the front and rear ends of the connected panels 110 and 120, the shock absorbing material 130 is closed by the finishing material 160 so as not to be exposed out of the panel.

In the finisher 160, the finish hole 162 is formed to match the finish holes 116 and 126 formed in the panels 110 and 120 to insert the finish 160 into the interior of the connected panels 110 and 120 and finish holes 116 and 126 formed in the panel. ) By fitting the fastening member 140 to the closing holes (116, 126, 162) in accordance with each other is finished so that the buffer 130 is not exposed.

As shown in FIG. 2, the second absorbing means 200 connected to the first absorbing means 100 includes: a fixture 220 fixed to the support fence 300 supporting the second absorbing means 200; The cylinder 250 is inserted into the fastener 220 to be fastened, and the injection hole 252 is formed so as to inject air, and a part of the cylinder 250 penetrates to protrude out of the cylinder 250 to reciprocate in the cylinder 250. A piston 270 for conveying, a fixture 260 coupled to one end of the piston 270 to fix the first absorbing means 100, and a sealing member 290 for blocking and sealing the injection hole 252. It is composed.

The fixture 220 is composed of a flange 222 which is in surface contact with the support fence 300, and a coupling protrusion 228 protruding upward from the central portion of the flange 220.

A fixing hole 224 is formed in the flange 222 to be fixed to the support fence 300 by the fastening member 140, and a male thread 226 is formed on the outer circumference of the coupling protrusion 228.

At one inner circumference of the cylinder 250 into which the compressed air is injected, a female thread 254 is formed to be combined with the male thread 226, and the piston 270 penetrates and protrudes at the other side.

When the fixture 220 and the cylinder 250 are joined together, the packing 229 is put together so that air in the cylinder 250 does not leak.

A piston groove is formed in the piston 270 so that the piston ring 272 is fitted, thereby maintaining airtightness between the piston 270 and the inner wall of the cylinder 250, and also protruding the piston 270. One end of the coupling hole 274 is formed.

The fastener 260 coupled to the piston 270 has a flange 262 which is in surface contact with the panel 120 of the first absorbing means 100, and a coupling protrusion 268 protruding upward from the central portion of the flange 262. It is composed of

A fixing hole 264 is formed in the flange 262 so that the first absorbing means 100 is fixed by the fastening member 140, and the coupling protrusion 268 coincides with the coupling hole 274 of the piston 270. A coupling hole 266 is formed to couple the fixture 260 and the piston 270 by the fastening member 140.

The air pressure in the cylinder 250 may be raised or lowered by an external temperature. In order to prevent this, it is preferable to insert a heat dissipation tube 240 outside the cylinder 250 to block a temperature increase by solar heat.

An injection hole 242 is formed in the heat dissipation tube 240 to inject air, and is sealed by the sealing member 290 in accordance with the position of the injection hole 252 of the cylinder 250.

In order to secure the second absorbing means 200 and to protect the heat dissipating material 240, the housing 230 may be fitted to the outside of the heat dissipating material 240.

The housing 230 has a flange 232 toward the support fence 300 and a fixing hole 234 is formed in the flange 232 and fixed to the support fence 300 by the fastening member 140, and the housing ( 230, an injection hole 236 is formed to match the position of the injection hole 242 of the heat dissipation tube 240, and is sealed by the sealing member 290.

That is, the injection holes 236, 242, 252 are formed in the housing 230, the heat dissipation tube 240, and the cylinder 250 so that the compressed air is introduced into the cylinder 250 and the air is sealed to block the injection hole. Airtightness is maintained by the member 290.

The sealing member 290 maintains hermeticity under a predetermined air pressure in the cylinder 250, but is preferably separated from the outside when the sealing member 290 is above a certain air pressure.

The corrugated pipe 210 is covered to protect the second absorbing means 200 from contaminants such as rainwater, soil, and dust.

The corrugated pipe 210 is formed with a through hole 212 downward so that rain water is accumulated or has moisture and ventilation functions.

The second absorbing means 200 configured as described above is fixed to the support fence 300 and the first absorbing means 100 is coupled to the second absorbing means 200, and thus, the first and second absorbing means 100 and 200. ) Is supported by the support fence 300 is in a state floating in the air.

As a result, when there is no means for supporting the absorbing means 100 and 200, the case may be bent or sag down. In order to prevent this, the pedestal 280 installed under the second absorbing means 200 is supported.

3 and 4, the flange 222 of the fixture 220 is in surface contact with the support fence 300, and the flange 232 of the housing 230 is in surface contact with the flange 222 of the fixture 220. The fixing member 140 penetrates the fixing holes 224 and 234 formed in the flanges 222 and 232, respectively, to fix the fixture 220 and the housing 230 to the support fence 300.

The heat dissipation tube 240 is interpolated in the housing 230, and the cylinder 250 is interpolated in the heat dissipation tube 240 so that the female thread 254 of the cylinder 250 is coupled to the fixing tool 220. It is combined with the male thread mountain 226 formed in 228, and is combined.

Compressed air is injected into the cylinder 250 through the inlets 236, 242, 252, and sealed by the sealing member 290, and the piston 270 is installed to be reciprocated, and the piston 270 penetrates the cylinder 250. At the end, a fixture 260 for fixing the first absorbing means 100 is coupled.

The second absorbing means 260 is protected by an extrapolated corrugated pipe 210 and is supported by a lower pedestal 280.

The buffer member 130 is positioned inside the panels 110 and 120 of the first absorbing means 100, and the panels are connected to each other by the connecting pipe 150, and both ends of the panel are finished by the finishing material 160 to prevent the buffer member 130. Will not be exposed to the outside.

If the vehicle is collided by installing the guard rail GR as described above in a place where there is a risk of falling, such as a bridge, an elevated road, or a cliff outside the road, the vehicle is hit by the panel 110 when the collision is weak. The panel 110 is crushed and the shock absorbing material 130 prevents damage to the vehicle by buffering the shock absorbing and dispersing of the vehicle.

If the impact is slightly severe, the shock is first absorbed and dispersed by the shock absorber 130, and then the remaining shock moves the piston 270 of the cylinder 250 in a shocking direction, but the air pressure resistance inside the cylinder 250 As a result, the piston slowly retreats, thereby mitigating the impacts secondarily and reducing damage to the vehicle.

If the collision is more severe, the shock is first absorbed and dispersed by the buffer 130, and then the remaining shock moves the piston 270 of the cylinder 250 in a shocking direction, but the piston is caused by a pneumatic resistance inside the cylinder. The sealing member 290 which blocked the injection holes 236, 242 and 252 when the air pressure inside the cylinder 250 deviates from the predetermined limit by gradually retreating the piston 270 as the 270 gradually retreats. ) Breaks out.

Therefore, the compressed air inside the cylinder 250 is drawn out through the inlet and the piston 270 retreats again to mitigate the impact of the vehicle in the third.

As a result, the damage of the vehicle can be reduced as much as possible, and the impact force on the driver is also absorbed so that the driver can stop the car by driving to a safe place without serious injury.

When the collision is very severe, the vehicle is stopped by colliding with the support fence 300 in the state where the shock is absorbed by the triple shock absorption as described above, and thus the vehicle falls through the support rail GR. It is to prevent large accidents that occur.

As described above, according to the present invention, when a guardrail collision of a vehicle is carried out, the impact generated during a collision with a double shock absorption that is primarily absorbed and dispersed by a cushioning material and secondarily absorbed by air pressure is maximized. Absorption can reduce fatal human property damage from accidents.

Claims (10)

First absorbing means for absorbing and dispersing the shock by the cushioning material when the vehicle collides with the vehicle; Second absorbing means coupled to the first absorbing means to absorb the impact of the vehicle again by air pressure; A support fence to which the second absorbing means is installed to support the first absorbing means and the second absorbing means; Bridges and overpass guardrails included. The method according to claim 1, wherein the first absorbing means, A bridge comprising a cushioning material for absorbing and dispersing an impact, a panel enclosing the cushioning material from the outside, a connector pipe extrapolated to the panel to connect neighboring panels to each other, and a finishing material for finishing both ends of the panel. And overpass guardrails. The method according to claim 1, wherein the second absorbing means, A fastener fixed to the support fence, a cylinder formed with an inlet for inserting air into the fastener, a piston capable of reciprocating through the cylinder, and a fastener coupled to the piston to fix the first absorbing means. And, bridge and overpass guardrail, characterized in that consisting of a sealing member for sealing the injection port. 4. The guardrail for bridges and overpasses according to claim 3, wherein the cylinder is surrounded by a heat dissipation tube that blocks external heat, and an inlet is formed in the heat dissipation tube and sealed by a sealing member. The guardrail for bridges and elevated roads according to claim 4, wherein the heat dissipation tube is surrounded and protected by a housing, and an inlet is formed in the housing and sealed by a sealing member. The guardrail for bridges and overpasses according to claim 5, wherein the housing is formed with a flange and is fixed to the support fence by a fastening member penetrating the flange. 4. The bridge and overpass guardrail of claim 1 or 3, wherein the second absorbing means is surrounded by a corrugated pipe. 8. The bridge and overpass guardrail of claim 7, wherein the corrugated pipe has a through hole formed at a lower portion thereof. 4. The bridge and overpass guardrail of claim 1 or 3, wherein the second absorbing means is supported by a lower pedestal. The guardrail for bridges and elevated roads of claim 3, wherein the sealing member is separated from the inlet when the air pressure in the cylinder is greater than or equal to a predetermined size.