CN108487136B - Retractable energy-absorbing road guardrail - Google Patents

Retractable energy-absorbing road guardrail Download PDF

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Publication number
CN108487136B
CN108487136B CN201810245995.6A CN201810245995A CN108487136B CN 108487136 B CN108487136 B CN 108487136B CN 201810245995 A CN201810245995 A CN 201810245995A CN 108487136 B CN108487136 B CN 108487136B
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China
Prior art keywords
transverse pipe
guardrail
upright post
pipe
guardrail upright
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CN201810245995.6A
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Chinese (zh)
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CN108487136A (en
Inventor
钱宇彬
李冲
冯浩
徐杰杰
李威
朱宜灿
高志俊
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Publication of CN108487136A publication Critical patent/CN108487136A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety 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
    • E01F15/02Continuous barriers extending along roads or between traffic lanes
    • E01F15/04Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety 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
    • E01F15/02Continuous barriers extending along roads or between traffic lanes
    • E01F15/04Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0461Supports, e.g. posts
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety 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
    • E01F15/02Continuous barriers extending along roads or between traffic lanes
    • E01F15/04Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0476Foundations
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety 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
    • E01F15/02Continuous barriers extending along roads or between traffic lanes
    • E01F15/04Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0484Installing; Repairing; Adjusting

Abstract

The invention relates to a retractable energy-absorbing road guardrail which comprises a cast iron base, a first guardrail upright post, a second guardrail upright post, two groups of transverse pipe assemblies and a plurality of vertical pipes, wherein the first guardrail upright post and the second guardrail upright post are respectively fixed on the cast iron base, the transverse pipe assemblies are arranged between the first guardrail upright post and the second guardrail upright post in an up-and-down structure, the plurality of vertical pipes are arranged between the two groups of transverse pipe assemblies at equal intervals, each transverse pipe assembly comprises a large transverse pipe, a middle transverse pipe and a small transverse pipe which are identical in length, one end of each large transverse pipe is connected with the first guardrail upright post, the other end of each large transverse pipe is sequentially connected with the middle transverse pipe and the small transverse pipe, the other end of each small transverse pipe is connected with the second guardrail, and the size equal difference of the. Compared with the prior art, the invention has the advantages of reducing the secondary injury of personnel caused by vehicle collision, reducing the maintenance cost of the guardrail, saving energy, protecting environment and the like.

Description

Retractable energy-absorbing road guardrail
Technical Field
The invention relates to the technical field of road guardrails, in particular to a retractable energy-absorbing road guardrail.
Background
The road guardrail separates motor vehicles, non-motor vehicles and pedestrian traffic, and longitudinally separates roads on the cross section, so that the motor vehicles, the non-motor vehicles and the pedestrians can drive in different lanes, the safety of the road traffic is improved, and the traffic order is improved. It has the functions of blocking, separating, warning and beautifying.
The road guardrail is used as basic safety equipment on a highway and plays a positive role in traffic safety on the highway, but meanwhile, the road guardrail has a plurality of defects in protection. For example, the energy absorption function of the road guardrail is not obvious, and the kinetic energy of the impacting vehicle can not be effectively absorbed in a large amount; the road guardrail is mainly combined by screws, so that the guardrail is easy to scatter after a vehicle impacts the guardrail, the guardrail fragments are scattered, and the maintenance cost is high; after an automobile accident happens, the height of the cross rod at the top of the guardrail is proper, the cross rod is right opposite to the front windshield of the automobile, the windshield is easily punctured, and a driver and a copilot sitting in the front row are punctured.
Although the guard rail does not cause a car accident, it is likely to aggravate the car accident. Therefore, the existing road guardrail needs to be improved urgently, so that the injury of the damaged guardrail to passengers when an automobile collides with the guardrail can be reduced, and the maintenance cost of the road guardrail can be reduced.
Disclosure of Invention
It is an object of the present invention to provide a retractable energy absorbing roadway barrier that overcomes the above-mentioned deficiencies of the prior art.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a retractable energy-absorbing road guardrail, includes cast iron base, first guardrail stand, second guardrail stand, two sets of horizontal pipe assembly and many standpipes, first guardrail stand, second guardrail stand fix respectively on the cast iron base, horizontal pipe assembly be about the structure locate between first guardrail stand and the second guardrail stand, many standpipes equidistant setting between two sets of horizontal pipe assembly, horizontal pipe assembly include that length and structure are the same violently manage greatly, well violently manage and violently manage for a short time, violently manage one end and be connected with first guardrail stand greatly, the other end with well violently manage, violently manage for a short time and connect gradually, the other end and the second guardrail stand of violently managing for a short time are connected, violently manage greatly, well violently manage, the cross-sectional dimension arithmetic of violently managing for a short time reduces.
Preferably, the inner surface of the other end of the large transverse pipe is provided with a first inner convex portion, one end of the middle transverse pipe is provided with a first clamping end, the size of the first clamping end is the same as the size of the cross section of the large transverse pipe, the first clamping end and the first inner convex portion form a first interlocking structure, and the first clamping end and the first inner convex portion are clamped and then fixed through a hexagon bolt.
Preferably, the inner surface of the other end of the middle transverse pipe is provided with a second inner convex part, the end part of the small transverse pipe connected with the middle transverse pipe is provided with a second clamping end, the size of the second clamping end is the same as that of the cross section of the middle transverse pipe, the second clamping end and the second inner convex part form a second interlocking structure, and the second clamping end and the second inner convex part are clamped and then fixed through a hexagon bolt.
Preferably, the inside of violently managing greatly, well violently managing, little violently managing is equipped with the spring respectively, the one end and the first guardrail stand of the inside spring of violently managing greatly are connected, the other end and the outer wall connection of first joint end, the one end of the inside spring of well violently managing and the inner wall connection of first joint end, the other end and the outer wall connection of second joint end, the one end of the inside spring of little violently managing and the inner wall connection of second joint end, the other end is connected with second guardrail stand.
Preferably, a first transverse pipe connecting piece is arranged on the first guardrail upright post, and a first mounting hole for fixing a large transverse pipe is formed in the first transverse pipe connecting piece; and a second transverse pipe connecting piece is arranged on the second guardrail stand column, and a second mounting hole for fixing a large transverse pipe is formed in the second transverse pipe connecting piece.
Preferably, the outer surface of the middle transverse tube is provided with a first collapse groove for absorbing energy, the total length of the first collapse groove accounts for one half of the total length of the middle transverse tube, the outer surface of the small transverse tube is provided with a second collapse groove for absorbing energy, and the total length of the second collapse groove accounts for three quarters of the total length of the small transverse tube.
Preferably, the first guardrail upright post and the second guardrail upright post are internally provided with honeycomb structures, and the in-plane direction of the structural plate with the honeycomb structures is the same as the road direction.
Preferably, the cast iron base is fixed on the ground through expansion screws.
Preferably, the standpipes are connected with two groups of horizontal pipe assemblies arranged up and down through spot welding after being arranged at equal intervals.
Preferably, the top of first guardrail stand, second guardrail stand be equipped with warning device respectively, this warning device includes warning light and the solar panel who is connected with the warning light.
Compared with the prior art, the invention has the following advantages:
(1) secondary damage is reduced: the traditional whole guardrail transverse tube is designed into three sections of retractable guardrail transverse tubes, so that the guardrail transverse tubes can be retracted when a vehicle collides, and the possibility of secondary damage to passengers in the vehicle caused by the fact that the transverse tubes are directly inserted into the vehicle during collision is reduced; in addition, an interlocking structure is arranged between the transverse pipe and the transverse pipe, the interlocking structure stabilizes the connection relationship between the transverse pipe and the transverse pipe, and reduces the possibility of secondary damage to other running vehicles and passengers in the vehicle of a collided automobile caused by the flying out of the transverse pipe of the guardrail due to damage during collision;
(2) the maintenance cost is reduced: springs are arranged in the three sections of transverse tubes, the springs can be compressed when vehicles collide, and kinetic energy caused by collision can be absorbed by the compression force of the springs; in addition, the outer surfaces of the middle transverse pipe and the small transverse pipe are provided with crumple grooves, so that more kinetic energy can be absorbed when a vehicle is collided; the internal structure of the guardrail upright post is a honeycomb structure, and the structure is an energy-absorbing structure, so that the damage condition of the guardrail is further reduced, and the maintenance cost of the guardrail after collision is reduced;
(3) energy conservation and environmental protection: the solar energy warning device is provided with the warning lamp for warning a driver at night or under the condition of dark light, and the warning lamp is powered by solar energy, so that the energy is saved, and the environment is protected while the warning function is provided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the internal structure of the guardrail post of the present invention;
FIG. 3 is a cross-sectional view of the structure of the joint of two cross tubes according to the present invention;
FIG. 4 is a schematic view of an interlock structure according to the present invention;
the reference numbers in the figures indicate:
1. cast iron base, 2, first guardrail stand, 3, second guardrail stand, 4, violently manage, 5, well violently manage, 6, little violently manage, 7, hex bolts, 8, first violently pipe connector, 9, the horizontal pipe connector of second, 10, well violently manage inside spring, 11, standpipe, 12, first groove of collapsing, 13, warning light, 14, the groove of collapsing of second, convex part in 501, the second, 601, the second joint end.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1 to 4, the present invention relates to a retractable energy-absorbing road barrier, and the energy-absorbing road barrier of the present invention is disposed in a direction consistent with the extending direction of a road. The energy-absorbing road guardrail comprises a cast iron base 1, a first guardrail upright post 2, a second guardrail upright post 3, a transverse pipe assembly and a vertical pipe 11. Cast iron base 1 is fixed subaerial, and first guardrail stand 2, second guardrail stand 3 locate on cast iron base 1, violently the pipe assembly have two sets ofly, locate respectively between the upper end of first guardrail stand 2 and second guardrail stand 3 and between the lower tip of first guardrail stand 2 and second guardrail stand 3, violently the pipe assembly including the big violently pipe 4 that connects gradually, well violently pipe 5 and little violently pipe 6.
The cast iron base 1 is fixed on the ground through expansion screws. The cast iron base 1 is provided with a hole at the center. The cross-sectional dimension of first guardrail stand 2 and second guardrail stand 3 and the size phase-match in cast iron base 1's hole, first guardrail stand 2 and second guardrail stand 3 insert respectively in two cast iron base 1's holes to will fix through the welding in the junction with cast iron base 1. The hole of the cast iron base 1 that this embodiment adopted is square, and its length of side is 80mm, the square column structure of the first guardrail stand 2 and the second guardrail stand 3 that this embodiment adopted.
The inside of first guardrail stand 2 and second guardrail stand 3 adopts honeycomb structure, and the in-plane direction of honeycomb structure's structural slab is the same with the road direction. The upper side and the lower side of the first guardrail upright post 2 are respectively welded with a first horizontal pipe connecting piece 8 in a semi-octagonal shape, a square first mounting hole is arranged on the first horizontal pipe connecting piece 8, and the size of the first mounting hole is matched with the cross section size of the large horizontal pipe 4. After the large transverse pipe 4 is fixed in the first mounting hole, the joint of the large transverse pipe 4 and the first transverse pipe connecting piece 8 is reinforced through welding, so that the large transverse pipe 4 and the first guardrail upright post 2 are fixedly connected. The upper side and the lower side of the second guardrail upright post 3 are respectively welded with a semi-octagonal second horizontal pipe connecting piece 9, a square second mounting hole is arranged on the second horizontal pipe connecting piece 9, and the size of the second mounting hole is matched with the cross section size of the small horizontal pipe 6. The small transverse pipe 6 is fixed behind the second mounting hole, and the joint of the small transverse pipe 6 and the second transverse pipe connecting piece 9 is reinforced through welding so as to be fixedly connected with the second guardrail upright post 3.
The large transverse pipe 4, the middle transverse pipe 5 and the small transverse pipe 6 are of square hollow column structures, the length of the large transverse pipe 4, the length of the middle transverse pipe 5 and the length of the small transverse pipe 6 are all 1000mm, the side length of the cross section of the large transverse pipe 4 is 50mm, the side length of the cross section of the middle transverse pipe 5 is 40mm, and the side length of the cross section of the small transverse pipe 6 is 30 mm. One end of the large transverse pipe 4 is fixed in a first mounting hole of the first transverse pipe connecting piece 8, the other end of the large transverse pipe is a hollow end, and the inner surface of the large transverse pipe is provided with a first inner convex part; the end part of the middle transverse pipe 5 connected with the large transverse pipe 4 is provided with a first clamping end, and the first clamping end has the same size as the section of the large transverse pipe 4; the first inner convex part and the first clamping end form an interlocking structure; the large transverse pipe 4 is clamped with the middle transverse pipe 5 and then fixed through a hexagon bolt 7. The other end of the middle transverse pipe 5, namely the end connected with the small transverse pipe 6, has the same structure as the hollow end of the large transverse pipe 4, namely the inner surface of the hollow end of the middle transverse pipe 5 is provided with a second inner convex part 501; the end part of the small transverse pipe 6 connected with the middle transverse pipe 5 is provided with a second clamping end 601, and the second clamping end 601 has the same section size as the middle transverse pipe 5; the second inner convex part 501 and the second clamping end 601 form an interlocking structure, and the middle transverse pipe 5 and the small transverse pipe 6 are clamped and fixed through a hexagon bolt 7. The other end of the small transverse pipe 6 is fixed in a second mounting hole of a second transverse pipe connecting piece 9. The hexagon bolt 7 used in this embodiment is tempered to achieve the required hardness and bearing capacity.
The outer surfaces of the middle transverse pipe 5 and the small transverse pipe 6 are provided with crumple grooves for absorbing energy, wherein the total length of the first crumple groove 12 on the outer surface of the middle transverse pipe 5 is 500mm, and the total length of the second crumple groove 14 on the surface of the small transverse pipe 6 is 750 mm. The collapse groove guides the transverse pipe to collapse and absorb energy when collision occurs.
The spring is equipped with in the violently intraduct of three-section, the one end of the interior spring of violently managing 4 greatly is connected with first guardrail stand 2, the other end with well outer wall connection of violently managing 5 first joint end, well violently manage the one end of interior spring 10 and well inner wall connection of violently managing 5 first joint end, the other end with the little outer wall connection who violently manages 6 second joint end 601, the one end of the interior spring of violently managing 6 little and the little inner wall connection who violently manages 6 second joint end 601, the other end is connected with second guardrail stand 3.
Warning device is installed respectively at the top of first guardrail stand 2 and second guardrail stand 3, and the device includes warning light 13 and solar panel, and solar panel is connected with warning light 13 for store the electric energy, when outside light was darker, warning light 13 can twinkle in order to indicate past driver.
The vertical tubes 11 are connected to the horizontal tube assemblies on the upper and lower sides by spot welding at every interval of 100 mm.
The materials of the first guardrail upright post 2, the second guardrail upright post 3, the large transverse tube 4, the middle transverse tube 5, the small transverse tube 6 and the vertical tube 11 in the energy-absorbing road guardrail are all galvanized steel.
The working principle of the invention is as follows:
the energy absorption device realizes energy absorption when the guardrail is deformed when an automobile running on a road collides with the guardrail. When the automobile collides with the second guardrail upright post 3 at the side face, the second guardrail upright post 3 deforms and absorbs energy through the internal honeycomb structure, the second guardrail upright post 3 absorbs a large amount of energy, after the expansion screw of the cast iron base 1 breaks, the second guardrail upright post 3 displaces towards the first guardrail upright post 2 together with the cast iron base 1, at this time, the small transverse pipe 6 begins to collapse, and meanwhile, the spring inside the small transverse pipe 6 begins to compress and absorb energy. If the collision energy is small and only the small transverse pipe 6 is damaged, only the small transverse pipe 6, the second guardrail upright post 3, the cast iron base 1 connected with the second guardrail upright post 3 and the damaged vertical pipe 11 are replaced after an accident occurs; if the collision energy is large, for example, the small transverse tube 6 continues to move towards the first guardrail upright post 2 after being collapsed and the internal spring is completely compressed, the end part of the small transverse tube 6 cuts off the hexagon bolt 7 for connecting the small transverse tube 6 with the middle transverse tube 5, then the internal spring 10 of the middle transverse tube starts to compress and absorb energy, the middle transverse tube 5 starts to collapse and absorb energy after the part of the small transverse tube 6 without the collapse groove completely contracts and enters the middle transverse tube 5, and if the middle transverse tube 5 collapses and the internal spring 10 of the middle transverse tube compresses and absorbs energy, after an accident occurs, only the middle transverse tube 5, the small transverse tube 6, the second guardrail upright post 3, the cast iron base 1 connected with the second guardrail upright post 3 and the damaged vertical tube 11 need to be replaced; if the collision energy is not completely absorbed, the middle transverse pipe 5 continues to move towards the direction of the first guardrail upright post 2 after being collapsed and the spring 10 inside the middle transverse pipe is completely compressed, the end part of the middle transverse pipe 5 is sheared by the hexagon bolt 7 used for connecting the middle transverse pipe 5 and the large transverse pipe 4, and then the spring inside the large transverse pipe 4 begins to compress and absorb energy. Finally, the part of the small transverse pipe 6 without the crumple groove completely extends into the middle transverse pipe 5, the part of the middle transverse pipe 5 without the crumple groove completely enters the large transverse pipe 4, and the whole guardrail absorbs a large amount of collision energy and shortens the length by more than half per se under the ideal state.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A retractable energy-absorbing road guardrail is characterized by comprising a cast iron base (1), a first guardrail upright post (2), a second guardrail upright post (3), two groups of transverse pipe assemblies and a plurality of vertical pipes (11), wherein the first guardrail upright post (2) and the second guardrail upright post (3) are respectively fixed on the cast iron base (1), the transverse pipe assemblies are arranged between the first guardrail upright post (2) and the second guardrail upright post (3) in an up-and-down structure, the vertical pipes (11) are arranged between the two groups of transverse pipe assemblies at equal intervals, each transverse pipe assembly comprises a large transverse pipe (4), a middle transverse pipe (5) and a small transverse pipe (6) which are the same in length and structure, one end of the large transverse pipe (4) is connected with the first guardrail upright post (2), the other end of the large transverse pipe (4) is sequentially connected with the middle transverse pipe (5) and the small transverse pipe (6), and the other end of the small transverse pipe (6) is connected with, the equal difference of the section sizes of the large transverse pipe (4), the middle transverse pipe (5) and the small transverse pipe (6) is reduced, a first crumpling groove (12) used for absorbing energy is arranged on the outer surface of the middle transverse pipe (5), the total length of the first crumpling groove (12) accounts for one half of the total length of the middle transverse pipe (5), a second crumpling groove (14) used for absorbing energy is arranged on the outer surface of the small transverse pipe (6), and the total length of the second crumpling groove (14) accounts for three quarters of the total length of the small transverse pipe (6).
2. The retractable energy-absorbing road guardrail as claimed in claim 1, wherein the inner surface of the other end of the large transverse pipe (4) is provided with a first inner convex part, one end of the middle transverse pipe (5) is provided with a first clamping end, the size of the first clamping end is the same as the cross-sectional size of the large transverse pipe (4), the first clamping end and the first inner convex part form a first interlocking structure, and the first clamping end and the first inner convex part are clamped and fixed through a hexagon bolt (7).
3. The retractable energy-absorbing road guardrail as claimed in claim 2, wherein a second inner convex part (501) is arranged on the inner surface of the other end of the middle transverse pipe (5), a second clamping end (601) is arranged at the end part of the small transverse pipe (6) connected with the middle transverse pipe (5), the size of the second clamping end (601) is the same as the cross-sectional size of the middle transverse pipe (5), the second clamping end (601) and the second inner convex part (501) form a second interlocking structure, and the second clamping end (601) is fixed with the second inner convex part (501) through a hexagon bolt (7) after being clamped.
4. The retractable energy-absorbing road guardrail according to claim 3, wherein springs are respectively arranged inside the large transverse pipe (4), the middle transverse pipe (5) and the small transverse pipe (6), one end of the internal spring of the large transverse pipe (4) is connected with the first guardrail upright post, the other end of the internal spring is connected with the outer wall of the first clamping end, one end of the internal spring (10) of the middle transverse pipe is connected with the inner wall of the first clamping end, the other end of the internal spring is connected with the outer wall of the second clamping end, one end of the internal spring of the small transverse pipe is connected with the inner wall of the second clamping end, and the other end of the internal spring is connected with the second guardrail upright post.
5. The retractable energy absorbing road barrier according to claim 1, wherein a first cross pipe connecting piece (8) is arranged on the first barrier upright post (2), and a first mounting hole for fixing the large cross pipe (4) is arranged on the first cross pipe connecting piece (8); and a second transverse pipe connecting piece (9) is arranged on the second guardrail upright post (3), and a second mounting hole for fixing the small transverse pipe (6) is formed in the second transverse pipe connecting piece (9).
6. The retractable energy absorbing road barrier as claimed in claim 1, wherein the first barrier post (2) and the second barrier post (3) are formed in a honeycomb structure, and the in-plane direction of the structural sheet of the honeycomb structure is the same as the road direction.
7. The retractable energy absorbing roadway barrier of claim 1, wherein said cast iron base (1) is fixed to the ground by means of expansion screws.
8. The retractable energy absorbing roadway barrier of claim 1, wherein the vertical tubes (11) are connected to two sets of horizontal tube assemblies disposed one above the other by spot welding after being arranged at equal intervals.
9. The retractable energy-absorbing road guardrail of claim 1, wherein the top of the first guardrail upright post (2) and the top of the second guardrail upright post (3) are respectively provided with a warning device, and the warning device comprises a warning lamp (13) and a solar panel connected with the warning lamp (13).
CN201810245995.6A 2018-03-23 2018-03-23 Retractable energy-absorbing road guardrail Active CN108487136B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201810245995.6A CN108487136B (en) 2018-03-23 2018-03-23 Retractable energy-absorbing road guardrail

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CN108487136B true CN108487136B (en) 2020-09-11

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114370020B (en) * 2022-01-25 2024-03-08 湘潭大学 Self-resetting crash barrier and installation method thereof
CN116851501B (en) * 2023-09-05 2023-11-03 河北科技大学 Road wave-shaped beam guardrail repairing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203213631U (en) * 2013-04-19 2013-09-25 中建七局安装工程有限公司 Protective handrail close to edge
CN204112266U (en) * 2014-08-06 2015-01-21 中州大学 A kind of Telescopic guardrail
CN104404903A (en) * 2014-10-13 2015-03-11 河海大学 Collision-prevention device for preventing ultrahigh vehicle from colliding bridge
CN204644922U (en) * 2015-05-18 2015-09-16 孟国华 telescopic guardrail
CN205999784U (en) * 2016-08-15 2017-03-08 刘竞远 Bridge guardrail
CN106917370A (en) * 2017-03-21 2017-07-04 安徽卓航展示用品有限公司 Anticollision barrier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203213631U (en) * 2013-04-19 2013-09-25 中建七局安装工程有限公司 Protective handrail close to edge
CN204112266U (en) * 2014-08-06 2015-01-21 中州大学 A kind of Telescopic guardrail
CN104404903A (en) * 2014-10-13 2015-03-11 河海大学 Collision-prevention device for preventing ultrahigh vehicle from colliding bridge
CN204644922U (en) * 2015-05-18 2015-09-16 孟国华 telescopic guardrail
CN205999784U (en) * 2016-08-15 2017-03-08 刘竞远 Bridge guardrail
CN106917370A (en) * 2017-03-21 2017-07-04 安徽卓航展示用品有限公司 Anticollision barrier

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