CN108674345A - A kind of Highway Maintenance vehicle that security performance is good - Google Patents
A kind of Highway Maintenance vehicle that security performance is good Download PDFInfo
- Publication number
- CN108674345A CN108674345A CN201810325422.4A CN201810325422A CN108674345A CN 108674345 A CN108674345 A CN 108674345A CN 201810325422 A CN201810325422 A CN 201810325422A CN 108674345 A CN108674345 A CN 108674345A
- Authority
- CN
- China
- Prior art keywords
- groove track
- crash barrier
- shaped crash
- switch
- shaped
- 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- Withdrawn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
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The present invention provides a kind of Highway Maintenance vehicle that security performance is good, including vehicle body, wherein, the tail portion of vehicle body hangs several screws, energy-absorbing spring and the L-shaped crash barrier set gradually from front to back, each L-shaped crash barrier includes transverse plate connected vertically and vertical plate, the upper surface of each transverse plate offers the groove track extended along the longitudinal direction, the front end of the groove track extends to vertical plate and the rear end of groove track is equipped with grooved rail road junction, the lower surface projection of each transverse plate and the matched draw runner of groove track, the rear end of each groove track is connected with energy-absorbing spring, the draw runner sliding of relatively posterior L-shaped crash barrier is stretched into the groove track of relatively preceding L-shaped crash barrier and is connect with energy-absorbing spring, the screw passes through two folded L-shaped crash barriers set.The present invention overcomes resistance to infer screw to consume impact energy by L-shaped crash barrier, reduces the shock of the wear end collision of automobile team present invention, improves the safety that present invention low-speed running on road carries out maintenance work.
Description
The application be to be on April 9th, 2018 application No. is the 201810311343.8, applying date, subject name is " a kind of
The divisional application that Highway Maintenance vehicle " proposes.
Technical field
The present invention relates to a kind of Highway Maintenance vehicles that security performance is good.
Background technology
Highway vehicle runs relatively slowly in carrying out highway maintenance work progress or in order to study for a second time courses one has flunked larger crack on road
It makes a brief stay, therefore is easy, by rear-end collision, to cause larger traffic accident, cause larger on the big road of vehicle flowrate
People's wealth loses.
In view of the above-mentioned problems, the applicant furthers investigate in view of the above-mentioned drawbacks in the prior art, there is this case generation then.
Invention content
The purpose of the present invention is to provide a kind of Highway Maintenance vehicles that security performance is good, effectively absorb the collision of automobile
Power avoids or mitigates mortal injury caused by rear-end collision to reach.
The invention is realized in this way：
There is provided a kind of Highway Maintenance vehicle that security performance is good, including vehicle body, wherein the tail portion of vehicle body hangs several
Screw, energy-absorbing spring and the L-shaped crash barrier set gradually from front to back, each L-shaped crash barrier include transverse direction connected vertically
Plate and vertical plate, the upper surface of each transverse plate offer the groove track extended along the longitudinal direction, and the front end of the groove track extends
It is equipped with grooved rail road junction, lower surface projection and the matched cunning of groove track of each transverse plate to the rear end of vertical plate and groove track
Item, the rear end of each groove track are connected with energy-absorbing spring, and the draw runner sliding of relatively posterior L-shaped crash barrier is stretched into relatively preceding
It is connect in the groove track of L-shaped crash barrier and with energy-absorbing spring, the screw passes through two folded L-shaped crash barriers set；
The front end face of the groove track covers one layer of electromagnet, and the front end face of the draw runner covers one layer of irony layer, the L
Energization master switch and electro-magnet switch, electromagnetism Tie Tong when energization master switch and electro-magnet switch are opened are additionally provided on shape crash barrier
Electricity, electromagnet powers off when energization master switch and electro-magnet switch are turned off；Before the energization master switch is located at the groove track
On end face, electro-magnet switch is located in vertical plate.
Further, the groove track is dovetail groove track.
Further, the upper surface of the groove track and the lower surface of the draw runner are in wavy.
Further, the front-end and back-end of the transverse plate be respectively equipped with for the perforative preceding through hole of screw and after run through
Hole, the preceding through hole of relatively posterior L-shaped crash barrier are Chong Die with the relatively preceding rear through hole of L-shaped crash barrier.
Further, the inner surface of the preceding through hole and rear through hole is covered with magnet.
Further, each L-shaped crash barrier further includes having warning circuit, emergency alarm bell and alarm switch, the emergency alarm bell and
Alarm switch accesses the warning circuit, which connects with after electromagnet parallel connection with energization master switch, alarm switch with
Energization master switch opens alarm power on circuitry, and alarm switch and energization master switch are turned off alarm down circuitry；It is described
Emergency alarm bell and alarm switch are located in vertical plate.
Further, the quantity for the screw that the L-shaped crash barrier is arranged gradually increases from back to front.
After adopting the above technical scheme, the present invention relates to a kind of Highway Maintenance vehicles that security performance is good, with existing skill
Art is compared, and advantageous effect is, the present invention includes at least two folding the L-shaped crash barrier that sets along the longitudinal direction, and screw passes through
Two folded L-shaped crash barriers set, when care the car encounter rear-end collision when, the vehicle that knocks into the back can be knocked positioned at rearmost L-shaped anticollision
The vertical plate on column to push the L-shaped crash barrier move forward, L-shaped crash barrier move forward moment impact force can by screw infer from
And crash energy is consumed, several L-shaped crash barriers move forward one by one, often push a L-shaped crash barrier that will infer and hammer into the L
All screws of shape crash barrier, such crash energy gradually exhaust by the snap-off process of several secondary screws, effectively avoid chasing after
The tail automobile Highway Maintenance vehicle good to security performance is hit strongly, reaches anti-collision effect.
In addition, screw after fractureing relatively posterior L-shaped crash barrier draw runner during Forward can squeeze relatively preceding L-shaped
The energy-absorbing spring of crash barrier absorbs a part of impact energy again using the deformation of energy-absorbing spring, further promotes energy-absorbing anti-collision effect
Fruit.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the side schematic view of several L-shaped crash barriers of the present invention；
Fig. 3 is the structural schematic diagram of the L-shaped crash barrier of the present invention.
Reference sign：
1, vehicle body, 2, L-shaped crash barrier, 21, transverse plate, 211, groove track, 2111, electromagnet, 212, draw runner, 213, preceding pass through
Perforation, 214, rear through hole, 22, vertical plate, 3, screw, 4, energy-absorbing spring, 5, emergency alarm bell, 6, alarm switch, 7, electromagnet opens
It closes, 8, energization master switch.
Specific implementation mode
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is coordinated to be explained in detail.Coordinate X, Y indicate front-rear direction and upper and lower directions respectively in figure.
Referring to Fig.1 shown in -3, the present invention provides a kind of Highway Maintenance vehicle that security performance is good, including vehicle body 1,
In, the tail portion of vehicle body 1 hangs several screws 3, energy-absorbing spring 4 and the L-shaped crash barrier 2 set gradually from front to back, specifically
Be to be hung on highway maintenance vehicle positioned at the L-shaped crash barrier 2 of foremost, simple, secured and removable screw thread can be used and connect
It connects.Each L-shaped crash barrier 2 includes transverse plate 21 connected vertically and vertical plate 22, and the upper surface of each transverse plate 21 offers
The groove track 211 extended along the longitudinal direction, the front end of the groove track 211 extend to the rear end of vertical plate 22 and groove track 211
Equipped with 211 mouthfuls of groove track, lower surface projection and the 211 matched draw runner 212 of groove track of each transverse plate 21, each groove track
211 rear end is connected with energy-absorbing spring 4, and it is anti-that relatively preceding L-shaped is stretched into the sliding of draw runner 212 of posterior L-shaped crash barrier 2 relatively
It hits in the groove track 211 on column and is connect with energy-absorbing spring 4, such several L-shaped crash barriers 2 realization, which is sequentially connected, just will not take off
From.
The screw 3 passes through two folded L-shaped crash barriers set, and specifically, the front-end and back-end of the transverse plate 21 are distinguished
Equipped with for the perforative preceding through hole 213 of screw 3 and rear through hole 214, relatively the preceding through hole 213 of posterior L-shaped crash barrier 2 with
The rear through hole 214 of preceding L-shaped crash barrier 2 is overlapped relatively, as shown in Fig. 2, each screw 3 sequentially passes through two L-shaped anticollisions
The rear through hole 214 and preceding through hole 213 on column 2.When care the car encounter rear-end collision when, the vehicle that knocks into the back can be knocked positioned at backmost
L-shaped crash barrier 2 vertical plate 22 to push the L-shaped crash barrier 2 move forward, L-shaped crash barrier 2 move forward moment impact force
Screw 3 can be inferred that several L-shaped crash barriers 2 move forward one by one to consume crash energy, often push a L-shaped anticollision
Column 2 will infer that all screws 3 for hammering into the L-shaped crash barrier 2, such crash energy fractureed by several secondary screws 3
Journey gradually exhausts, and the Highway Maintenance vehicle for effectively avoiding wear end collision of automobile good to security performance is hit strongly, reaches anticollision
Effect.
In addition, screw 3 fracture after posterior L-shaped crash barrier 2 relatively draw runner 212 along preceding L-shaped crash barrier 2 relatively
Groove track 211 move forward, it is final to squeeze energy-absorbing spring 4, absorb a part of impact energy again using the deformation of energy-absorbing spring 4, into
One step promotes energy-absorbing anti-collision effect.
Preferably, the groove track 211 is dovetail groove track 211, plays position-limiting action, prevents L-shaped crash barrier 2 from upper and lower
Direction is detached from.
Preferably, the upper surface of the groove track 211 and the lower surface of the draw runner 212 are in wavy, wavy knot
Structure makes frictional force bigger between groove track 211 and draw runner 212, and crash energy is consumed again by frictional resistance.
Energy-absorbing spring 4 has saved larger elastic force, and the vehicle that knocks into the back is made in the elastic force release that energy-absorbing spring 4 is saved in order to prevent
At secondary injury, the front end face of the groove track 211 covers one layer of electromagnet 2111, and the front end face of the draw runner 212 covers one
Layer irony layer (not shown), is additionally provided with energization master switch 8 and electro-magnet switch 7,8 He of energization master switch on the L-shaped crash barrier
Electromagnet 2111 is powered when electro-magnet switch 7 is opened, electromagnet 2111 when energization master switch 8 and electro-magnet switch 7 are turned off
Power-off；The energization master switch 8 is located on the front end face of the groove track 211, and electro-magnet switch 7 is located in vertical plate 22.Make
With first pressing electro-magnet switch 7 before the present invention, and energization master switch 8 is in off state, in the process of knocking into the back, relatively posterior L-shaped
Draw runner 212 supports the front end face of groove track 211 during crash barrier 2 moves forward after squeezing energy-absorbing spring 4 directly, and it is total finally to compress energization
Switch 8 is to open energization master switch 8, and electro-magnet switch 7 and energization master switch 8 are switched at this time, and electromagnet 2111, which is powered, to be produced
Magnetisation, since the front end face of draw runner 212 is covered with irony layer, magnetic electromagnet 2111 can attract draw runner 212, avoid
Draw runner 212 is flicked by the bounce of energy-absorbing spring 4, is caused to the vehicle that knocks into the back secondary to effectively prevent L-shaped crash barrier 2 to rebound
Injury.In addition, the present invention L-shaped crash barrier 2 fold and be unfolded it is also very convenient, care the car stay in when, can be by screw 3
Extraction opens electro-magnet switch 7, is then pushed forward L-shaped crash barrier 2 one by one, and ejection is to relatively before relatively posterior L-shaped crash barrier 2
Also the energization master switch 8 in groove track 211 can be pressed when preceding L-shaped crash barrier 2, electro-magnet switch 7 and energization at this time is always opened
It closes 8 to open simultaneously, several L-shaped crash barriers 2 are attracted securely by electromagnet 2111, will not occupy too large space；When expansion only
Electro-magnet switch 7 is closed, electromagnet 2111 just powers off, and lacks magnetism, and by the elastic force of spring, the folded L-shaped set hits column energy
Rapid deployment, finally penetrate screw 3 i.e. complete assembling.
For the stable connection of screw 3, the inner surface of the preceding through hole 213 and rear through hole 214 is covered with magnet, spiral shell
Nail 3 is made of common ferrous material, and magnet adsorption can be used and fix so that through hole 213 is passed through with after before screw 3 is not easily disconnected from
Perforation 214.
The size of the screw 3 of different size is different, and intensity is also just different, and the required thrust that fractures just differs
Sample, what specific thrust numerical value can be surveyed by experiment, in actual use, the present invention can estimate different speed different automobile types
Then the energy generated when collision selects the specification and quantity of screw 3, but the spiral shell on every piece of L-shaped crash barrier 2 according to estimated value
Nail 3 fractures desired thrust cannot be excessive, otherwise just vertical plate 22 will directly be pushed over before pushing L-shaped crash barrier 2, so
The screw 3 of each L-shaped crash barrier 2 hammered into is unsuitable too many, the quantity that L-shaped crash barrier 2 can be selected to be superimposed again according to estimated value,
Namely in conjunction with finally determining the consumable impact energy of whole device to screw 3 and 2 comprehensive selection of L-shaped crash barrier.It uses
The transverse plate 21 of the L-shaped crash barrier 2 of Shi Butong, which is that front and rear end is folded, to be set, and all L-shaped crash barriers 2 can be folded directly when folding
If space is smaller, therefore, convenient efficiently dismounting can also be realized in the case where ensuring raising anticollision ability and is carried,
With very strong practicability.
Preferably, the quantity for the screw 3 being arranged according to the principle of collision, L-shaped crash barrier 2 gradually increases from back to front, than
Such as, as shown in Fig. 2, setting there are four L-shaped crash barrier 2, since impact force is maximum when vehicle encounters the present apparatus at the beginning, it is located at
Rearmost L-shaped crash barrier 2 only has row's screw 3, and the resistance of the screw 3 can only centainly consume impact force, so vehicle
It will continue to move, then further become smaller using the counteracting of 3 resistance of two rows of screws, like this, impact force is smaller and smaller,
Resistance is increasing so that absorb energy be an incremental process, in this way, the present invention do not have to larger impact force into
The larger rigid impact of row intensity is taken the mode of slow consumption impact force that the present apparatus can effectively be avoided directly to be ruined broken, and is produced
It is raw that there is the fragment of bigger impact force and cause secondary injury, while realizing the effect for absorbing energy.
In order to remind taking care for maintenance worker when knocking into the back, as another preferred embodiment of the present invention, each L-shaped is anti-
It further includes having warning circuit (not shown), emergency alarm bell 5 and alarm switch 6 to hit column, and the emergency alarm bell 5 and alarm switch 6 access institute
Warning circuit is stated, which connects with after 2111 parallel connection of electromagnet with energization master switch 8, and alarm switch 6 and energization are always opened
It closes 8 and opens alarm power on circuitry, alarm switch 6 and energization master switch 8 are turned off alarm down circuitry, the emergency alarm bell
5 and alarm switch 6 be located in vertical plate 22.That is, the electromagnet 2111 and emergency alarm bell 5 of the present invention be powered and had powered off both all
Be energized the control of master switch 8, also to be controlled respectively by electro-magnet switch 7 and alarm switch 6, and be powered master switch 8 by
The extruding of draw runner 212 can just open.It cares the car when being conserved on highway car, L-shaped crash barrier 2 is unfolded, i.e., energization master switch 8 is closed,
Electro-magnet switch 7 and alarm switch 6 are all first opened at this time, so collided energization master switch 8 because of caused by the accident that knocks into the back
When pressing, electromagnet 2111 and emergency alarm bell 5 are all powered, and emergency alarm bell 5 sounds and plays alarm function；When L-shaped crash barrier 2 folds
Several L-shaped crash barriers 2 are superimposed with each other and will be pressed into energization master switch 8, at this time close alarm switch 6, and emergency alarm bell 5 is not yet
It can make a sound.The present invention is avoided rebounding first and secondary impact is caused to knock into the back vehicle, promoted by three ingenious settings of switch
Safety；Secondly, Quick folding and expansion L-shaped Crashworthy plate are realized, convenience is promoted；Finally, it encounters collision and sends out alarm in time,
Safety around ensureing.
Example the above is only the implementation of the present invention is not intended to limit the scope of patent protection of the present invention, every utilization
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, be included within the scope of the present invention.
Claims (3)
1. a kind of Highway Maintenance vehicle that security performance is good, including vehicle body, which is characterized in that the tail portion of vehicle body hangs several
Screw, energy-absorbing spring and the L-shaped crash barrier set gradually from front to back, each L-shaped crash barrier include transverse direction connected vertically
Plate and vertical plate, the upper surface of each transverse plate offer the groove track extended along the longitudinal direction, and the front end of the groove track extends
It is equipped with grooved rail road junction, lower surface projection and the matched cunning of groove track of each transverse plate to the rear end of vertical plate and groove track
Item, the rear end of each groove track are connected with energy-absorbing spring, and the draw runner sliding of relatively posterior L-shaped crash barrier is stretched into relatively preceding
It is connect in the groove track of L-shaped crash barrier and with energy-absorbing spring, the screw passes through two folded L-shaped crash barriers set；The grooved rail
The front end face in road covers one layer of electromagnet, and the front end face of the draw runner covers one layer of irony layer, is additionally provided on the L-shaped crash barrier
When energization master switch and electro-magnet switch, energization master switch and electro-magnet switch are opened electromagnet be powered, energization master switch and
Electromagnet powers off when electro-magnet switch is turned off；The energization master switch is located on the front end face of the groove track, and electromagnet is opened
Pass is located in vertical plate；
Each L-shaped crash barrier further includes having warning circuit, emergency alarm bell and alarm switch, and the emergency alarm bell and alarm switch access institute
Warning circuit is stated, which connects with after electromagnet parallel connection with energization master switch, and alarm switch and energization master switch are opened
Alarm power on circuitry is opened, alarm switch and energization master switch are turned off alarm down circuitry；The emergency alarm bell and alarm are opened
Pass is located in vertical plate.
2. a kind of good Highway Maintenance vehicle of security performance according to claim 1, which is characterized in that the groove track
For dovetail groove track.
3. a kind of good Highway Maintenance vehicle of security performance according to claim 1 or 2, which is characterized in that the L-shaped
The quantity for the screw that crash barrier is arranged gradually increases from back to front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325422.4A CN108674345A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle that security performance is good |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311343.8A CN108891368A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle |
| CN201810325422.4A CN108674345A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle that security performance is good |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810311343.8A Division CN108891368A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108674345A true CN108674345A (en) | 2018-10-19 |
Family
ID=63799159
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810311343.8A Withdrawn CN108891368A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle |
| CN201810325242.6A Withdrawn CN108891369A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle of good buffer effect |
| CN201810325422.4A Withdrawn CN108674345A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle that security performance is good |
| CN201910253584.6A Active CN110356348B (en) | 2018-04-09 | 2019-03-30 | Highway maintenance car |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810311343.8A Withdrawn CN108891368A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle |
| CN201810325242.6A Withdrawn CN108891369A (en) | 2018-04-09 | 2018-04-09 | A kind of Highway Maintenance vehicle of good buffer effect |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910253584.6A Active CN110356348B (en) | 2018-04-09 | 2019-03-30 | Highway maintenance car |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN108891368A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112894848A (en) * | 2021-01-21 | 2021-06-04 | 德州学院 | Library robot |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6092959A (en) * | 1998-11-16 | 2000-07-25 | Energy Absorption Systems, Inc. | Method for decelerating a vehicle, highway crash cushion, and energy absorbing element therefor |
| CN2835003Y (en) * | 2005-10-25 | 2006-11-08 | 凌建军 | Energy-saving and -consuming type anti-collision device for automobile |
| KR100837105B1 (en) * | 2007-07-16 | 2008-06-11 | 주식회사 성우하이텍 | Crash box in automotive bumper system |
| CN102211558A (en) * | 2011-04-02 | 2011-10-12 | 湖南亮财汽车安全科技有限公司 | Automobile collision energy dissipation protection device |
| CN103303232B (en) * | 2013-07-08 | 2015-08-12 | 白波 | A kind of collision buffer protection device for motor vehicle |
| CN104002752B (en) * | 2014-05-04 | 2016-04-13 | 邱洪武 | Automobile electromagnetic active anti-collision device |
| CN104085366B (en) * | 2014-06-26 | 2016-03-30 | 华侨大学 | Auto against adaptive multistage crash energy absorption equipment and control method thereof |
| CN206202215U (en) * | 2016-11-25 | 2017-05-31 | 清远浩和仪器设计有限公司 | A kind of multi-functional afterbody safety barrier for lorry |
| CN106930209A (en) * | 2017-05-01 | 2017-07-07 | 成都爱可信科技有限公司 | A kind of freeway guardrail of anticollision damping |
-
2018
- 2018-04-09 CN CN201810311343.8A patent/CN108891368A/en not_active Withdrawn
- 2018-04-09 CN CN201810325242.6A patent/CN108891369A/en not_active Withdrawn
- 2018-04-09 CN CN201810325422.4A patent/CN108674345A/en not_active Withdrawn
-
2019
- 2019-03-30 CN CN201910253584.6A patent/CN110356348B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110356348A (en) | 2019-10-22 |
| CN108891369A (en) | 2018-11-27 |
| CN108891368A (en) | 2018-11-27 |
| CN110356348B (en) | 2022-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181019 |
|
| WW01 | Invention patent application withdrawn after publication |