CN109024385B - Highway safety protective guard - Google Patents
Highway safety protective guard Download PDFInfo
- Publication number
- CN109024385B CN109024385B CN201811117449.0A CN201811117449A CN109024385B CN 109024385 B CN109024385 B CN 109024385B CN 201811117449 A CN201811117449 A CN 201811117449A CN 109024385 B CN109024385 B CN 109024385B
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- Prior art keywords
- guard rail
- guard
- energy
- plate
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001681 protective effect Effects 0.000 title abstract description 35
- 239000000463 material Substances 0.000 claims description 22
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 20
- 239000004917 carbon fiber Substances 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 239000010410 layer Substances 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 31
- 230000006378 damage Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 208000027418 Wounds and injury Diseases 0.000 abstract description 7
- 208000014674 injury Diseases 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/619—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings with reflectors; with means for keeping reflectors clean
Abstract
The invention discloses a highway safety protective guard structure, comprising: a guard rail fixing table post and a guard rail body; the guard rail body further comprises a guard rail outer plate and a guard rail inner plate; a hierarchical energy-absorbing ball cell is arranged between the guard rail outer plate and the guard rail inner plate; the guard rail fixing table column further comprises a base, a sandwich pipe and a reflecting ball; the sandwich pipe consists of a hexagonal inner pipe, an outer pipe and energy-absorbing column cells between the hexagonal inner pipe and the outer pipe; the reflecting ball is arranged on the top end face of the sandwich pipe. The invention provides a highway protective guard with high-efficiency collision energy absorption, and aims to solve the problems that the existing protective guard is poor in rigidity and energy absorption effect, and the damage degree after collision of an automobile and injury to personnel on the automobile cannot be effectively reduced. And optimizing weak links of the common highway protective fence, namely secondary injury possibly caused by insufficient energy absorption when an automobile collides with a protective fence pillar.
Description
Technical Field
The invention relates to the technical field of highway safety guard rails, in particular to a highway safety guard rail.
Background
With the increasing of the automobile possession, traffic accidents become more frequent, and once accidents occur on the expressway with higher running speed of the automobile, the accidents often generate unbearable damages, which prompt us to try to reduce the damages of the expressway accidents as much as possible, so that higher performance requirements are put forward on the expressway safety guard rail. The expressway protective fence has the advantages that the expressway protective fence can be used as an energy absorbing device for absorbing energy generated by collision of an automobile when a traffic accident occurs, so that excessive energy is prevented from being directly transmitted to the automobile and even passengers on the automobile, and the expressway protective fence has an effective protection effect on life and property safety of the passengers in the automobile. Therefore, the quality of the energy absorption performance of the guard rail directly influences the severity of accidents. However, the conventional guard rail on the expressway is too simple in structure and cannot effectively absorb energy after the automobile collides, so that injuries to the automobile and passengers in the automobile after accidents cannot be effectively reduced. Therefore, the design of the expressway safety guard rail with high-efficiency energy absorption has very important practical significance and practical value.
Disclosure of Invention
The invention aims to solve the problems that the existing highway protective guard is poor in safety performance, high in efficiency and energy absorption, poor in rigidity and energy absorption effect, incapable of effectively reducing the damage degree of an automobile after collision, injuries to personnel on the automobile and the like. And optimizing weak links of the common highway protective fence, namely secondary injury possibly caused by insufficient energy absorption when an automobile collides with a protective fence pillar.
In order to solve the problems, the technical scheme of the invention is as follows:
a highway safety rail guard structure comprising: a guard rail fixing table post and a guard rail body;
the guard rail body further comprises a guard rail outer plate and a guard rail inner plate; a hierarchical energy-absorbing ball cell is arranged between the guard rail outer plate and the guard rail inner plate;
the guard rail fixing table column further comprises a base, a sandwich pipe and a reflecting ball; the sandwich pipe consists of a hexagonal inner pipe, an outer pipe and energy-absorbing column cells between the hexagonal inner pipe and the outer pipe; the reflecting ball is arranged on the top end face of the sandwich pipe.
In a preferred embodiment: the cross section of the energy-absorbing column cell is semicircular taking the side length of the hexagonal inner tube as the diameter, and is tangent to the inner surface of the outer tube.
In a preferred embodiment: the hexagonal inner tube and the hexagonal outer circular tube are made of carbon fiber materials.
In a preferred embodiment: the material of the reflecting ball is PVC.
In a preferred embodiment: the guard rail outer plate is a double-layer plate formed by gluing an aluminum plate and a carbon fiber plate.
In a preferred embodiment: the guard rail inner plate is a single-layer plate made of aluminum alloy materials and is wave-shaped.
In a preferred embodiment: the hierarchical energy-absorbing ball cells are made of aluminum materials.
In a preferred embodiment: the hierarchical energy-absorbing spherical cells consist of three hemispheres with different sizes, the arrangement mode is that two hemispheres are embedded in the diameter side of one large hemisphere, two smaller hemispheres are respectively embedded in the diameter side of the two hemispheres, wherein the diameter of the hemispheres is 2 times of that of the embedded hemispheres
Compared with the prior art, the invention has the following beneficial effects:
1. simple structure, few parts, convenient assembly and disassembly, labor saving and strong sustainability
The highway protective fence provided by the invention mainly comprises two parts of a protective fence column and a protective fence body, wherein the protective fence body comprises an inner plate, an outer plate and a hierarchical energy-absorbing ball cell between the inner plate and the outer plate, and the protective fence column only comprises a base, a sandwich pipe and a reflective ball, so that the highway protective fence is simple in structure and convenient to assemble. And most structures are joined together by welding or gluing. The individual components of the guard rail are also sufficiently selected to be material-selecting in combination with their use. If the reflective ball is made of renewable PVC materials, the maintenance is convenient, the corrosion resistance is strong, the combination of the reflective paint and the reflective ball is strong, and the service life is long.
2. Comprehensive and efficient energy absorption and good stability
The safety guard rail provided by the invention solves the weak link of the traditional highway guard rail, namely the situation that an automobile collides with a guard rail column, so that the guard rail also has a good energy absorption effect under the situation, and the safety event caused by insufficient energy absorption and the harm of injury to passengers in the automobile caused by overlarge collision force are effectively avoided. In addition, the guard rail has high-efficiency energy absorption effect. The protective guard body is formed by the inner plate, the outer plate and the hierarchical energy-absorbing cells between the inner plate and the outer plate, when an automobile collides with the protective guard body, collision energy is transferred to the primary energy-absorbing cells by the inner plate, the primary energy-absorbing cells are pressed and energy-absorbing deformed and then transfer the collision energy to the embedded two secondary energy-absorbing cells, the energy-absorbing characteristics of the primary energy-absorbing cells are continued, the energy is absorbed step by step, the energy absorption of the hierarchical energy-absorbing device has the remarkable advantage of effectively reducing the collision force, so that the buffer effect is achieved, and the protective guard has good energy-absorbing stability.
3. Has good rigidity and crashworthiness
When the automobile collides with the protective guard body, the hierarchical energy absorbing cells alternately start the energy absorbing process. The energy absorption process of the energy absorption cell is that collision energy is transferred to the first-stage energy absorption cell by the inner plate, the inner plate and the first-stage energy absorption cell are in point-to-surface contact at first time, along with the deepening of the energy absorption process, the point-to-surface contact is changed into surface-to-surface contact, and the surface-to-surface contact range is also continuously expanded, so that the inner plate of the anti-collision beam and the first-stage energy absorption cell are jointly changed into a plane, further, the two embedded second-stage energy absorption cells continuously act on the first-stage energy absorption cell, the working principle of the second-stage energy absorption cell is similar to that of the first-stage energy absorption cell, so that the thickness of the protective guard body is continuously reduced along with the deepening of the collision process, but the rigidity of the protective guard body is continuously increased, and the protective guard can have high rigidity after being collided. In addition, the guard rail outer plate is a double-layer plate formed by combining carbon fibers and aluminum plates, the aluminum plates have good pressure resistance but insufficient tensile resistance, and the carbon fiber plates have good tensile strength, and the double-layer plate formed by the carbon fibers and the aluminum plates can effectively absorb the carbon fibers and the aluminum plates, so that the double-layer plate structure has higher strength. In summary, a double-layer plate made of carbon fibers and aluminum has a lighter weight but higher strength than a metal plate of the same thickness. Therefore, the guard rail can be used for bridges, tunnels, hillside slopes and other road conditions requiring that automobiles cannot rush out of a road, and the good rigidity can protect the automobiles from rush out of a road track after being fully absorbed in energy, so that the life and property safety of drivers are ensured.
Drawings
FIG. 1 is a schematic general construction of the present invention;
FIG. 2 is a cross-sectional view of a rail guard column and column sandwich tube;
FIG. 3 is a cross-sectional view of a guard rail body;
in the figure: 1 is a guard rail column; 2 is a protective fence body, 201 is a base; 202 is a sandwich tube; 203 is a reflective sphere; 204 is a cross-sectional view of the sandwich tube, 301 is a guard rail inner plate; 302 is a guard rail outer plate; 303 are hierarchical energy absorbing spherical cells.
Detailed Description
The description is further illustrated below in connection with specific embodiments. It should be noted that: the following examples are given for illustration of the invention and are not intended to limit the technical solutions described in the invention, but all technical solutions and modifications thereof which do not depart from the scope of the invention are included in the scope of the claims.
Referring to fig. 1-3, a highway safety rail guard structure comprising: a protective fence fixing table post 1 and a protective fence body 2. The guard rail body 2 mainly comprises a guard rail outer plate 302, a guard rail inner plate 301 and a hierarchical energy absorbing spherical cell 303 between the inner plate and the outer plate.
The guard rail fixing table column 1 consists of a base 201, a sandwich pipe 202 and a reflecting ball 203, wherein the reflecting ball 203 is arranged on the top end face of the sandwich pipe 202 through epoxy resin. Wherein the sandwich tube 202 is composed of a hexagonal inner tube, an outer circular tube, and an energy absorbing column cell between the inner and outer tubes, refer to the structure 204 in fig. 3.
The base of the guard rail fixing table post 1 is made of cast iron, and has enough rigidity and high cost performance. The hexagonal inner tube and outer circular tube of the sandwich tube 202 are made of carbon fiber. Because the outer circular tube is exposed for a long time, the outer circular tube is required to have certain corrosion resistance and weather adaptability, the carbon fiber is selected as the material of the hexagonal inner tube and the outer circular tube, and the carbon fiber has better corrosion resistance and weather adaptability compared with the common metal material, so that the service life of the protective guard can be ensured, and the protective guard has good economic benefit; and the density of the carbon fiber material is small, the mass of the carbon fiber material is lighter than that of common metal under the same volume, and the carbon fiber material is convenient to transport and install, so that the manpower and material resources can be saved, and the carbon fiber material has good economic benefit.
The energy-absorbing column cells between the inner pipe and the outer pipe of the guard rail fixing column 1 are semicircular taking the side length of the hexagonal inner pipe as the diameter, and are tangent with the inner surface of the outer pipe. The purpose of the energy-absorbing column cell is that a large amount of energy can be absorbed when an automobile collides with the guard rail fixing column 1, so that the problems that the collision position of the common highway guard rail is poor in energy-absorbing effect when the guard rail is fixed, the automobile is easy to aggravate the damage of accidents and secondary injuries possibly generated and the like are solved.
When an automobile collides with the protective fence column, the outer circular tube of the protective fence column is firstly stressed to deform, then collision force is transmitted to the energy-absorbing column cells between the inner tube and the outer tube, and as the section of the energy-absorbing column cells is semicircular and the position for starting energy-absorbing deformation is the semicircular cambered surface, the energy-absorbing column cells are gradually compressed into a rectangle after energy-absorbing deformation, the deformation of the energy-absorbing column cells is transmitted to two adjacent energy-absorbing column cells due to the fact that the rectangle is stressed to continue to compress, the initiation mechanism can effectively utilize the plurality of energy-absorbing column cells to absorb energy, energy-absorbing efficiency is improved, and the arrangement mode can be well suitable for the collision angle of the automobile and the protective fence column, so that the protective fence column has better safety performance.
The reflective balls 203 on the guard rail fixing table posts 1 are made of renewable PVC materials, so that energy is saved, and the combination property of the PVC materials and the reflective coating is better than that of the PVC materials and the reflective coating compared with the traditional metal, so that the reflective coating is not easy to fall off, the maintenance period is long, and the labor force is reduced to a certain extent. In addition, the ageing resistance of the PVC material is better than that of the traditional steel, and the PVC material has good weather adaptability, good rainwater corrosion resistance, long service life, low price and high cost performance.
The guard rail outer plate 302 is a double-layer plate formed by gluing an aluminum plate and a carbon fiber plate, the aluminum material has good pressure resistance but insufficient tensile property, the carbon fiber plate has good tensile strength, the aluminum material and the carbon fiber plate are combined to achieve the effects of complementary advantages and short distance, and meanwhile, the aluminum material and the carbon fiber are both light in weight and good in energy absorption effect, so that the aim of light weight is fulfilled. The guard rail inner plate 301 is a single-layer plate made of an aluminum alloy material, and has a relatively gentle wavy shape. An aluminum material with good energy absorption effect is adopted by the hierarchical energy absorption ball cells between the inner plate and the outer plate. The energy absorbing spherical cells of one level consist of hemispheres with three different sizes, the arrangement mode is that two small hemispheres are embedded in the diameter side of one large hemispheric, two smaller hemispheres are respectively embedded in the diameter side of the two small hemispheres, and the diameter of each hemispheric is 2 times of that of the embedded small hemispheres.
When the automobile collides with the guard rail body 2, the automobile firstly extrudes the inner plate, the inner plate is gradually stretched into a plane from the original wave shape under the action of impact force, the automobile collision is buffered, and the energy absorption ball cells between the inner plate and the outer plate are just below the protruding part of the wave inner plate of the guard rail body 2, so that the energy absorption process of the energy absorption ball cells is initiated, and the energy absorption process of the guard rail body 2 can be orderly carried out. When the inner plate pressure is transferred to the level energy-absorbing ball cells, the maximum energy-absorbing ball cells start to be stressed, the initial point-surface contact is gradually changed into the surface-surface contact, the contact area is increased, a certain buffer effect is achieved, and when the primary energy-absorbing ball cells are completely extruded, the pressure is transferred to the embedded secondary energy-absorbing ball cells, and the pressure is transferred to the tertiary energy-absorbing ball cells in the same way. This arrangement therefore has good level energy absorption properties and good stability and cushioning.
The foregoing is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art will be able to make insubstantial modifications of the present invention within the scope of the present invention disclosed herein by this concept, which falls within the actions of invading the protection scope of the present invention.
Claims (6)
1. A highway safety rail guard structure, characterized by comprising: a guard rail fixing table post and a guard rail body;
the guard rail body comprises a guard rail outer plate and a guard rail inner plate; a hierarchical energy-absorbing ball cell is arranged between the guard rail outer plate and the guard rail inner plate;
the guard rail fixing table column comprises a base, a sandwich pipe and a reflecting ball; the sandwich pipe consists of a hexagonal inner pipe, an outer pipe and energy-absorbing column cells between the hexagonal inner pipe and the outer pipe; the reflecting ball is arranged on the top end surface of the sandwich pipe;
the cross section of the energy-absorbing column cell is semicircular taking the side length of the hexagonal inner tube as the diameter, and is tangent with the inner surface of the outer tube;
the hierarchical energy-absorbing spherical cells consist of three hemispheres with different sizes, the arrangement mode is that two small hemispheres are embedded in the diameter side of one large hemispheric, two smaller hemispheres are respectively embedded in the diameter side of the two small hemispheres, and the diameter of each hemispheric is 2 times of that of the embedded small hemispheres.
2. A highway safety rail guard structure according to claim 1 wherein: the hexagonal inner tube and the hexagonal outer circular tube are made of carbon fiber materials.
3. A highway safety rail guard structure according to claim 1 wherein: the material of the reflecting ball is PVC.
4. A highway safety rail guard structure according to claim 1 wherein: the guard rail outer plate is a double-layer plate formed by gluing an aluminum plate and a carbon fiber plate.
5. A highway safety rail guard structure according to claim 1 wherein: the guard rail inner plate is a single-layer plate made of aluminum alloy materials and is in a wave shape.
6. A highway safety rail guard structure according to claim 1 wherein: the hierarchical energy-absorbing ball cells are made of aluminum materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117449.0A CN109024385B (en) | 2018-09-20 | 2018-09-20 | Highway safety protective guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117449.0A CN109024385B (en) | 2018-09-20 | 2018-09-20 | Highway safety protective guard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109024385A CN109024385A (en) | 2018-12-18 |
| CN109024385B true CN109024385B (en) | 2023-11-21 |
Family
ID=64617964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811117449.0A Active CN109024385B (en) | 2018-09-20 | 2018-09-20 | Highway safety protective guard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109024385B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323961B (en) * | 2022-07-11 | 2024-03-19 | 泉州装备制造研究所 | Road safety guard rail |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1063803A (en) * | 1963-02-28 | 1967-03-30 | Edwin Bucher | Improvements in vehicle crash barriers |
| CN101454510A (en) * | 2007-05-25 | 2009-06-10 | 李爱端 | Safety guide rail |
| KR20100077866A (en) * | 2008-12-29 | 2010-07-08 | 황창조 | Shock absorbing device of guard rail |
| CN203049498U (en) * | 2013-01-06 | 2013-07-10 | 宁波大学 | Expressway guardrail with good anti-collision performance |
| KR101469749B1 (en) * | 2014-05-23 | 2014-12-05 | 제국산업(주) | Device for absorbing impact gradually |
| CN205501892U (en) * | 2016-01-29 | 2016-08-24 | 临安市公路建设工程有限公司 | Rotatory bucket of highway rail guard |
| CN106948294A (en) * | 2017-04-27 | 2017-07-14 | 华侨大学 | A kind of waveform sandwich highway safeguard structure |
| CN207295562U (en) * | 2017-10-13 | 2018-05-01 | 长安大学 | A kind of concealed two-stage buffered waveforms guardrail |
| CN108487134A (en) * | 2018-02-12 | 2018-09-04 | 山西大学 | A kind of anti-collision guard rail for highways based on multiple defence line |
| CN209082396U (en) * | 2018-09-20 | 2019-07-09 | 华侨大学 | Highway safety protective fence |
-
2018
- 2018-09-20 CN CN201811117449.0A patent/CN109024385B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1063803A (en) * | 1963-02-28 | 1967-03-30 | Edwin Bucher | Improvements in vehicle crash barriers |
| CN101454510A (en) * | 2007-05-25 | 2009-06-10 | 李爱端 | Safety guide rail |
| KR20100077866A (en) * | 2008-12-29 | 2010-07-08 | 황창조 | Shock absorbing device of guard rail |
| CN203049498U (en) * | 2013-01-06 | 2013-07-10 | 宁波大学 | Expressway guardrail with good anti-collision performance |
| KR101469749B1 (en) * | 2014-05-23 | 2014-12-05 | 제국산업(주) | Device for absorbing impact gradually |
| CN205501892U (en) * | 2016-01-29 | 2016-08-24 | 临安市公路建设工程有限公司 | Rotatory bucket of highway rail guard |
| CN106948294A (en) * | 2017-04-27 | 2017-07-14 | 华侨大学 | A kind of waveform sandwich highway safeguard structure |
| CN207295562U (en) * | 2017-10-13 | 2018-05-01 | 长安大学 | A kind of concealed two-stage buffered waveforms guardrail |
| CN108487134A (en) * | 2018-02-12 | 2018-09-04 | 山西大学 | A kind of anti-collision guard rail for highways based on multiple defence line |
| CN209082396U (en) * | 2018-09-20 | 2019-07-09 | 华侨大学 | Highway safety protective fence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109024385A (en) | 2018-12-18 |
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