CN110485336A - Can anticollision environment-friendly type municipal road isolated column - Google Patents
Can anticollision environment-friendly type municipal road isolated column Download PDFInfo
- Publication number
- CN110485336A CN110485336A CN201910907594.7A CN201910907594A CN110485336A CN 110485336 A CN110485336 A CN 110485336A CN 201910907594 A CN201910907594 A CN 201910907594A CN 110485336 A CN110485336 A CN 110485336A
- Authority
- CN
- China
- Prior art keywords
- plate
- pillar
- fence
- anticollision
- isolated column
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
-
- 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
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/088—Details of element connection
-
- 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
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
-
- 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
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
-
- 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
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0023—Details, e.g. foundations
-
- 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
- E01F9/615—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 illuminated
-
- 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
- E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
- E01F9/669—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for fastening to safety barriers or the like
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
Can anticollision environment-friendly type municipal road isolated column, it is related to environmental technology field, including the pedestal fixed on the ground, pillar and fence, pillar is fixedly connected with fence, pillar is connected on pedestal by what elastic recoil structure can dismantle, fence two sides are equipped with protective plate, elastomeric element is equipped between fence and protective plate, protective plate includes the first Crashworthy plate and the second Crashworthy plate, sound absorbing layer and activated carbon adsorption layer are equipped between first Crashworthy plate and the second Crashworthy plate, second Crashworthy plate, sound absorbing layer, activated carbon adsorption layer and the first Crashworthy plate pass sequentially through mucigel and are fixedly connected, the present invention, which provides municipal road isolated column, has preferable buffering effect, can protective separation column do not knocked down or damaged, and have the effect of good noise reduction and dust suction, night capable of emitting low-light simultaneously, it serves as warning, remind vehicle, it tries to avert accidents, Aesthetic effect is integrally increased to isolated column.
Description
Technical field
The present invention relates to environmental technology fields, and in particular to can anticollision environment-friendly type municipal road isolated column.
Background technique
With the development of society, road and rail etc. all rapidly grows up.It usually requires to set in highway, railroad wayside
It sets a large amount of guardrail and highway enclose setting.Fastlink, hill path etc. require setting isolated column, are the dealing vehicle to highway
Road carries out explicitly separated.Existing town road isolated column is mostly most common protective fence, usually directly solid by pedestal
Fixed on the ground to play the role of that vehicle is isolated, itself does not have anticollision, is travelling accidentally if road is got on the bus
May isolated column be knocked down or be damaged when bumping against guardrail, while vehicle also can be by by anti-force itself and internal staff
To injury.
Urban road is a kind of main occasion open, that air pollution occurs simultaneously, and road is got on the bus can produce in traveling
Raw many noises, influence the environment of surrounding, and automobile can discharge a large amount of Tail Gas, and will drive on road
Dust, aggravate the pollution of air.And existing isolated column is relatively simple for structure, does not have noise reduction dust-absorbing function.
Summary of the invention
For above situation, do not have anticollision, noise reduction, dust suction simply to solve existing town road isolated column structure
Etc. functions, the present invention provide municipal road isolated column have preferable buffering effect, can protective separation column do not knocked down or damaged,
And have the effect of good noise reduction and dust suction, while night capable of emitting low-light, it serves as warning, reminds vehicle, prevent
Accident also integrally increases aesthetic effect to isolated column.
Technical solution are as follows: further include enclosing including the multiple pedestals and pillar corresponding with each pedestal fixed on the ground
Column, fence are connect between adjacent struts and with pillar, and pillar is connected on pedestal by what elastic recoil structure can dismantle,
Elastic recoil structure impact force and makes pillar restore to the original state after stress in the horizontal direction for alleviating pillar, and the two of fence
Side is respectively fixed with protective plate, is fixedly connected with elastomeric element between fence and protective plate, and protective plate includes being parallel to each other and phase
Every setting, flat first Crashworthy plate and the second Crashworthy plate, sound absorbing layer is equipped between the first Crashworthy plate and the second Crashworthy plate
And activated carbon adsorption layer, the second Crashworthy plate, sound absorbing layer, activated carbon adsorption layer and the first Crashworthy plate pass sequentially through the fixed company of mucigel
It connects, elastomeric element one end is fixedly connected with fence, and the elastomeric element other end is fixedly connected with the first Crashworthy plate.
Preferably, elastic recoil structure includes brute spring and the support rod for being fixedly connected on brute spring both ends, and each
Strut is fixedly connected with plate far from one end of brute spring, and connecting plate is fixedly connected with pedestal, pillar by screw respectively.
Preferably, elastomeric element is made of several the first springs for being separated by setting in parallel.
Preferably, mineral wool layer can be used in sound absorbing layer.
Preferably, the first Crashworthy plate and the second Crashworthy plate use steel plate, and the second Crashworthy plate is equipped with several through-holes.
Preferably, the second Crashworthy plate outer surface is coated with protective layer, and protective layer can be polyethylene fire-retardant film or poly- carbonic acid
Ester fire-retardant film or polyvinyl chloride fire-retardant film.
Preferably, the outside of pillar is enclosed with shell made of PE plastic material.
Preferably, fence top surface is pasted with fluorescent belt.
The present invention provide can anticollision environment-friendly type municipal road isolated column, have the beneficial effect that compared with prior art
1, elastic recoil structure is arranged in setting between the strut and the base, when pillar is hit by vehicle etc., elastic recoil structure
Extraneous impact force can be effectively decomposed, makes the pillar that there is certain buffering effect, and pillar can be restored to after stress
Original state can effectively prevent the collision of branch major gene and topple over or damage, while decreasing pillar to vehicle etc.
Reaction force will be preferably minimized the injury of vehicle interior personnel；
2, protective plate and elastomeric element are set on fence, and when fence is hit by vehicle etc., protective plate and elastomeric element can have
Effect alleviates extraneous impact force, and protective plate 4, elastomeric element and elastic recoil structure can protect fence not to be damaged because of shock, together
When decrease fence the reaction force of vehicle etc. will be preferably minimized the injury of vehicle interior personnel, and protective plate packet
Sound absorbing layer and activated carbon adsorption layer are included, sound absorbing layer is convenient for reducing the noise that vehicle generates on road, and activated carbon adsorption layer is convenient for suction
The little particle dust generated on attached road has preferable noise reduction and dust suction, has preferable environment protecting；
3, it is coated with protective layer in the second Crashworthy plate outer surface, protective layer is thin using polyethylene fire-retardant film, Polycarbonate flame retardant
Film or polyvinyl chloride fire-retardant film have fireproof effect, prevent vehicle and fence hit or friction and it is on fire；
4, it is enclosed with shell made of PE plastic material in the outside of pillar, increases the anticollision effect of pillar, to pillar into one
Step plays a protective role；
5, fluorescent belt is set, and fluorescent belt is made of the reflecting material that night glimmers, serves as warning, and reminds vehicle, prevents
Generation accident, also integrally increases aesthetic effect to isolated column.
Detailed description of the invention
Fig. 1 present invention provide can anticollision environment-friendly type municipal road isolated column top view.
The portion A enlarged drawing in Fig. 2 Fig. 1.
Fig. 3 present invention provide can anticollision environment-friendly type municipal road isolated column look at straight figure.
Fig. 4 present invention provides municipal road isolated column direct-view figure.
In figure: 1 pedestal, 2 pillars, 3 fences, 4 protective plates, 5 first Crashworthy plates, 6 second Crashworthy plates, 7 sound absorbing layers, 8 activity
Charcoal adsorption layer, 9 brute springs, 10 support rods, 11 connecting plates, 12 first springs, 13 through-holes, 14 fluorescent belts.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.Attached drawing is simplified schematic diagram, only with signal side
Formula illustrates basic structure of the present invention, therefore it only shows the composition relevant to the invention.
Embodiment one, as shown in figure 4, can anticollision environment-friendly type municipal road isolated column, including what is fixed on the ground
Multiple pedestals 1 and pillar 2 corresponding with each pedestal 1, further include fence 3.Fence 3 is between adjacent struts 2 and and pillar
2 connections.
As shown in figs. 1 and 3, pillar 2 is connected on pedestal 1 by what elastic recoil structure can dismantle.Elastic recoil structure
Impact force and pillar 2 is made to restore to the original state after stress in the horizontal direction for alleviating pillar 2.It is hit in pillar 2 by vehicle etc.
When hitting, elastic recoil structure can effectively decompose extraneous impact force, so that the pillar 2 is had certain buffering effect, and pillar 2 exists
After stress, because of the resilient nature of elastic recoil structure itself, pillar 2 can be made to be restored to original state, effectively prevented
Branch major gene collides and topples over or damage.Decrease pillar to the reaction force of vehicle etc. simultaneously, it will be to vehicle interior personnel
Injury be preferably minimized.
As shown in figs. 1 and 3,3 two sides of fence are respectively fixed with protective plate 4.Fence 3 between protective plate 4 and adjacent struts 2
Size is adapted.Elastomeric element is fixedly connected between fence 3 and protective plate 4.When fence is hit by vehicle etc., protective plate 4
Extraneous impact force can be effectively relieved with elastomeric element, protective plate 4, elastomeric element and elastic recoil structure can protect fence 3 not
It is damaged because of shock.Fence 3 is decreased to the reaction force of vehicle etc. simultaneously, the injury of vehicle interior personnel will be dropped to most
It is low.
As shown in Fig. 2, protective plate 4 includes being parallel to each other and being separated by setting, flat first Crashworthy plate 5 and second anti-
Hit plate 6.First Crashworthy plate 5 and the second Crashworthy plate 6 are all made of metal material and are made.Between first Crashworthy plate 5 and the second Crashworthy plate 6
Equipped with sound absorbing layer 7 and activated carbon adsorption layer 8.Second Crashworthy plate 6, sound absorbing layer 7, activated carbon adsorption layer 8 and the first Crashworthy plate 5 are successively
It is fixedly connected by mucigel.EVA glue-line can be used in mucigel.Elastomeric element setting corresponding with the vertical bar on fence 3, and bullet
Property component one end is fixedly connected with the vertical bar of fence 3.The elastomeric element other end is fixedly connected with the first Crashworthy plate 5.Sound absorbing layer 7 is just
In reducing the noise that vehicle generates on road, activated carbon adsorption layer 8 is convenient for the little particle dust generated on absorption road, the city Shi Gai
Political affairs highway isolated column has preferable noise reduction and dust suction, has preferable environment protecting.
Embodiment two, on the basis of above embodiments, further, elastic recoil structure includes brute spring 9 and fixed
It is connected to the support rod 10 at 9 both ends of brute spring.Support rod 10 is with brute spring 9 by being welded and fixed, and brute spring 9 is not using
Rust steel material is made, and length is 5~8cm.Support rod 10 can be the tubulose of cylinder, and length is 3~5cm.Two support rods 10 are remote
One end from brute spring 9 is fixedly connected with plate 11.Connecting plate 11 can be rectangular slab, slightly larger than the cross section of support rod 10, on
Face is equipped with screw hole.Connecting plate 11 is with support rod 10 by being welded and fixed.Pedestal 1 and pillar 2 be equipped with on connecting plate 11
The corresponding screw hole of screw hole.Connecting plate 11 is fixedly connected with pedestal 1, pillar 2 by screw respectively.
Embodiment three, on the basis of above embodiments, further, elastomeric element is several to be separated by the first of setting in parallel
Spring 12.Several first spring, 12 one end are fixedly connected by welding with fence 3.Several first spring, 12 other ends and first are prevented
Plate 5 is hit to be fixedly connected by welding.
Example IV, on the basis of above embodiments, further, mineral wool layer can be used in sound absorbing layer 7.Can effectively it subtract
The noise that vehicle generates on few road.
Embodiment five, on the basis of above embodiments, further, the first Crashworthy plate 5 and the second Crashworthy plate 6 use steel
Plate.Second Crashworthy plate 6 is equipped with several through-holes 13, and setting through-hole 13 can play the weight saved material and mitigate protective plate 4
Purpose.
Embodiment six, on the basis of above embodiments, further, 6 outer surface of the second Crashworthy plate be coated with protective layer.It is anti-
Sheath can be polyethylene fire-retardant film or Polycarbonate flame retardant film or polyvinyl chloride fire-retardant film.Improve the second Crashworthy plate 6
Fire protecting performance, prevents vehicle and fence from hitting or rubbing and on fire.
Embodiment seven, on the basis of above embodiments, further, the outside of pillar 2 is enclosed with PE plastic material and is made
Shell.Make shell that there is preferable anti-collision effect using PE plastics.Shell is adapted with the external size of pillar 2, and is passed through
Seccotine is bonded and fixed at outside pillar 2.The anticollision effect for increasing pillar, further functions as protective effect to pillar 2.
Embodiment eight, on the basis of above embodiments, further, 3 top surface of fence is pasted with fluorescent belt 14.Fluorescent belt 14
It for strip, is made of the material that night glimmers, fluorescent belt 14 can be fluorescent green or yellow.And pass through strength gluing
Knot is fixed on 3 top surface of fence.Fluorescent belt 14 serves as warning, and reminds vehicle, tries to avert accidents, also integrally increase to isolated column
Aesthetic effect.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.Variation extended from this changes still within the protection scope of the invention.
Claims (8)
1. can anticollision environment-friendly type municipal road isolated column, including multiple pedestals (1) for fixing on the ground and with each institute
State the corresponding pillar (2) of pedestal (1), further include fence (3), the fence (3) between the adjacent pillar (2) and with institute
State pillar (2) connection, which is characterized in that the pillar (2) is connected to the pedestal (1) by what elastic recoil structure can dismantle
On, the elastic recoil structure impact force and makes the pillar (2) in stress knot in the horizontal direction for alleviating the pillar (2)
It restores to the original state after beam, the two sides of the fence (3) are respectively fixed with protective plate (4), the fence (3) and the protective plate (4)
Between be fixedly connected with elastomeric element, the protective plate (4) includes being parallel to each other and being separated by setting, flat first anticollision
Plate (5) and the second Crashworthy plate (6) are equipped with sound absorbing layer (7) and activity between first Crashworthy plate (5) and the second Crashworthy plate (6)
Charcoal adsorption layer (8), second Crashworthy plate (6), sound absorbing layer (7), activated carbon adsorption layer (8) and the first Crashworthy plate (5) successively lead to
It crosses mucigel to be fixedly connected, described elastomeric element one end is fixedly connected with the fence (3), the elastomeric element other end and institute
The first Crashworthy plate (5) is stated to be fixedly connected.
2. it is according to claim 1 can anticollision environment-friendly type municipal road isolated column, which is characterized in that it is described elasticity return
Playing structure includes brute spring (9) and the support rod (10) for being fixedly connected on the brute spring (9) both ends, each support rod
(10) be fixedly connected with plate (11) far from the one end of the brute spring (9), the connecting plate (11) respectively with the pedestal
(1), the pillar (2) is fixedly connected by screw.
3. it is according to claim 1 can anticollision environment-friendly type municipal road isolated column, which is characterized in that the elastic portion
Part is made of several the first springs (12) for being separated by setting in parallel.
4. it is according to claim 1 to 3 can anticollision environment-friendly type municipal road isolated column, which is characterized in that it is described
Mineral wool layer can be used in sound absorbing layer (7).
5. it is according to claim 4 can anticollision environment-friendly type municipal road isolated column, which is characterized in that described first is anti-
Plate (5) and the second Crashworthy plate (6) are hit using steel plate, second Crashworthy plate (6) is equipped with several through-holes (13).
6. it is according to claim 5 can anticollision environment-friendly type municipal road isolated column, which is characterized in that described second is anti-
Plate (6) outer surface is hit coated with protective layer, the protective layer can be polyethylene fire-retardant film or Polycarbonate flame retardant film or poly-
Vinyl chloride fire-retardant film.
7. it is according to claim 1 can anticollision environment-friendly type municipal road isolated column, which is characterized in that the pillar
(2) outside is enclosed with shell made of PE plastic material.
8. it is according to claim 1 can anticollision environment-friendly type municipal road isolated column, which is characterized in that the fence
(3) top surface is pasted with fluorescent belt (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907594.7A CN110485336A (en) | 2019-09-24 | 2019-09-24 | Can anticollision environment-friendly type municipal road isolated column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907594.7A CN110485336A (en) | 2019-09-24 | 2019-09-24 | Can anticollision environment-friendly type municipal road isolated column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110485336A true CN110485336A (en) | 2019-11-22 |
Family
ID=68544103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910907594.7A Withdrawn CN110485336A (en) | 2019-09-24 | 2019-09-24 | Can anticollision environment-friendly type municipal road isolated column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110485336A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965469A (en) * | 2019-12-24 | 2020-04-07 | 边海平 | Road sound insulation guardrail |
| CN112095519A (en) * | 2020-09-17 | 2020-12-18 | 邬剑娜 | Environment-friendly road is with median of making an uproar that falls |
| CN112921844A (en) * | 2021-01-25 | 2021-06-08 | 广东金基建设工程有限公司 | Road construction sound insulation protective screen structure |
| CN114032814A (en) * | 2021-12-22 | 2022-02-11 | 潍坊学院 | Safety noise-reducing isolation pier |
-
2019
- 2019-09-24 CN CN201910907594.7A patent/CN110485336A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965469A (en) * | 2019-12-24 | 2020-04-07 | 边海平 | Road sound insulation guardrail |
| CN112095519A (en) * | 2020-09-17 | 2020-12-18 | 邬剑娜 | Environment-friendly road is with median of making an uproar that falls |
| CN112921844A (en) * | 2021-01-25 | 2021-06-08 | 广东金基建设工程有限公司 | Road construction sound insulation protective screen structure |
| CN114032814A (en) * | 2021-12-22 | 2022-02-11 | 潍坊学院 | Safety noise-reducing isolation pier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191122 |