CN110042777A - A kind of vehicle-mounted warning rack of highway - Google Patents
A kind of vehicle-mounted warning rack of highway Download PDFInfo
- Publication number
- CN110042777A CN110042777A CN201910423925.XA CN201910423925A CN110042777A CN 110042777 A CN110042777 A CN 110042777A CN 201910423925 A CN201910423925 A CN 201910423925A CN 110042777 A CN110042777 A CN 110042777A
- Authority
- CN
- China
- Prior art keywords
- bracing piece
- vehicle
- rack
- driving
- inner bracing
- 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.)
- Pending
Links
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
- 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
- E01F9/662—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing mounted on vehicles, e.g. service vehicles; Warning vehicles travelling along with road-maintenance, e.g. remotely controlled
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention relates to a kind of alarm for safety of car, in particular to a kind of vehicle-mounted warning rack of highway, chassis including being fixed on roof, wherein one end is hinged with the first driving mechanism for being linked in trunnion axis sliding module and it being driven to move before and after chassis, connecting rod is hinged between sliding module and rotating turret, it stretches on rotating turret and is equipped with mounting rack, mounting rack is connected with the second driving mechanism for driving its stretching motion, mounting rack top is fixed with alarming device, the vehicle-mounted warning rack of highway of the invention can be realized the overturning and lifting of alarming device, and when not needing warning, entire Warning frame is in a horizontal state, the normal operation of automobile is not influenced；When not needing warning, alarming device downward, avoids the influence such as exposing to the weather, and the service life is high.
Description
Technical field
The present invention relates to a kind of alarm for safety of car, in particular to a kind of vehicle-mounted warning rack of highway.
Background technique
Highway Maintenance operating environment is dangerous, in order to guarantee that construction safety, Warning frame are indispensable.Existing warning frame body
Product is big, high to the vehicle needs of installation Warning frame, is typically mounted on the pick up of wagon box.This project devises a kind of liftable
Warning frame is folded, it is small in size, common vehicle roof can be installed on.
Status:
It is big that risk existing for pavement construction is carried out on a highway, if being not provided with security warning and guidance mark
Or equipment, it is easy to safety accident occur, existing warning and the guidance equipment overwhelming majority are mounted in towed or hand propelled
Rack on, due to needing to be manually operated, there are the disadvantages of troublesome in poeration, real-time is poor, transfer velocity is slow for this rack.Patent
ZL200820185038.0 discloses a kind of vehicle mounted moving sign vehicle, and the rack volume on this sign vehicle is big, and use is hydraulic
Cylinder driving, the requirement to installation vehicle is relatively high, needs to be mounted on the pick up of wagon box；In the patented product there is also it is another
Outer some deficiencies are: display screen can only do local overturning, and panel upward, influences the service life for showing panel when being laid flat；Thus
The popularization and application of the patented product are limited in certain degree.
Summary of the invention
Installation requirement of the existing technology is high in order to solve, and display screen overturning cannot downward and the technology that influences the service life is asked
Topic, the present invention are provided one kind and are driven based on common DC motor, the liftable folding warning rack of installation and common vehicle roof,
For realizing security warning when Expressway Road construction.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of vehicle-mounted warning rack of highway, the chassis including being fixed on roof, wherein one end before and after the chassis
It is hinged with the rotating turret along trunnion axis rotation, the chassis is equipped with the sliding module slided along vehicle lengthwise direction, described
Sliding module on be linked with driving its movement the first driving mechanism, the company of being hinged between the sliding module and rotating turret
Bar stretches on the rotating turret and is equipped with mounting rack, and mounting rack is connected with the second driving mechanism for driving its stretching motion, described
Mounting rack top be fixed with alarming device.
Further, the rotating turret includes the outer support bar positioned at the left and right sides, and the mounting rack includes being located at
The left and right sides and the inner bracing piece slided in outer support rod, outer support bar and inner bracing piece correspond.
Further, the first driving mechanism includes the first driving motor, and the output end of first driving motor connects
There is promotion screw rod, the sliding module includes the first feed screw nut connecting with promotion wire rod thread, the sliding module
It further include the connection frame being fixed on the first feed screw nut, the connecting rod is hinged on connection frame.
As an embodiment of the present invention, second driving mechanism include the second driving motor, described second
Driving motor output end is connected with enhancing screw, the enhancing screw and second feed screw nut's spiral shell being fixed in inner bracing piece
Line connects, and has sliding block on the inner bracing piece, has the sliding rail to match with sliding block on the outer support bar.
As another embodiment of the invention, second driving mechanism includes the second driving motor, and described the
Two driving motor output ends are connected with enhancing screw, the enhancing screw and the second feed screw nut being fixed in inner bracing piece
It is threadedly coupled, the inner bracing piece is equipped with the first slide block assembly, and first slide block assembly includes solid with inner bracing piece
The first fixed main body and the first ligand for cooperating in the sliding of outer support rod inner wall or rolling.
Further, first main body is the slider plate being fixed on inner bracing piece, the first ligand packet
Several first rolling elements being rotatably connected in slider plate are included, first rolling element rolls on outer support rod inner wall.
Further, at least two second slide block assemblies, institute are equipped between the enhancing screw and inner bracing piece inner wall
The second slide block assembly stated includes the second main body being mounted in enhancing screw and the inner wall in inner bracing piece slides or rolling
Second ligand of dynamic cooperation.
Further, second main body is bearing mounting base, and the enhancing screw is installed by bearing and bearing
Seat connection, second ligand includes several second rolling elements being rotatably connected on bearing mounting base, and described second
Rolling element rolls on inner bracing piece inner wall.
Further, the upper and lower of enhancing screw is arranged in the second slide block assembly between enhancing screw and inner bracing piece inner wall
The top of inner bracing piece is arranged in both ends, the first slide block assembly.
Further, motor mount is fixed on the rotating turret, the second driving motor is mounted on motor mount
On, the output end of the second driving motor is connected with driving gear, is fixed in the enhancing screw and engages with driving gear
Driven gear.
The utility model has the advantages that
(1) the vehicle-mounted warning rack of highway of the invention can be realized the overturning and lifting of alarming device, and not
When needing to warn, entire Warning frame is in a horizontal state, and does not influence the normal operation of automobile；
(2) when not needing warning, alarming device downward, avoids the influence such as exposing to the weather, and the service life is high；
It (3) is rolling friction between the outer support bar and inner bracing piece of embodiment 2, resistance is small, runs smooth；
(4) the enhancing screw top of embodiment 2 is supported by the second slide block assembly, and the other end is supported by feed screw nut,
The both ends support of enhancing screw is realized, structure is reliable；First slide block assembly and the second slide block assembly realize rolling friction, resistance
It is small；And support up and down is realized by the first slide block assembly being respectively provided with up and down between inner bracing piece and outer support bar, rigidity is higher.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structure chart of the embodiment of the present invention 1；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the partial enlarged view in Fig. 1 at B；
Fig. 4 is the first viewing angle constructions figure of the embodiment of the present invention 2 (omitting side outer support bar)；
Fig. 5 is the partial enlarged view in Fig. 4 at C；
Fig. 6 is the second viewing angle constructions figure of the embodiment of the present invention 2 (omitting side outer support bar)；
Fig. 7 is the internal engagement constructional cross sectional view of inner bracing piece and outer support bar；
Fig. 8 is system operating structure figure；
Fig. 9 is system block diagram；
Figure 10 is system circuit diagram.
Wherein, 1, chassis, 2, rotating turret, 21, outer support bar, 211, sliding rail, 3, sliding module, the 31, first feed screw nut,
32, connection frame, 4, connecting rod, 5, mounting rack, 51, inner bracing piece, 511, sliding block, 6, alarming device, the 7, first driving motor, 8, push away
Dynamic screw rod, the 9, second driving motor, 10, enhancing screw, the 12, first slide block assembly, 121, slider plate, the 122, first rolling element,
13, motor mount, 14, driving gear, 15, driven gear, the 16, second slide block assembly, 161, bearing mounting base, 162, second
Rolling element.
Specific embodiment
Such as Fig. 1~10, a kind of vehicle-mounted warning rack of highway, the chassis 1 including being fixed on roof, 1 front and back of chassis its
Middle one end is hinged with the rotating turret 2 along trunnion axis rotation, and chassis 1 is equipped with the sliding module 3 slided along vehicle lengthwise direction, sliding
It is linked with the first driving mechanism of its movement of driving in dynamic model group 3, connecting rod 4 is hinged between sliding module 3 and rotating turret 2, turns
It stretches in moving frame 2 and is equipped with mounting rack 5, mounting rack 5 is connected with the second driving mechanism for driving its stretching motion, 5 top of mounting rack
It is fixed with alarming device 6.
Rotating turret 2 includes the outer support bar 21 positioned at the left and right sides, and mounting rack 5 includes positioned at the left and right sides and in outer support
The inner bracing piece 51 slided in bar 21, outer support bar 21 and inner bracing piece 51 correspond.
First driving mechanism includes the first driving motor 7, and the output end of the first driving motor 7, which is connected with, pushes screw rod 8, sliding
Dynamic model group 3 includes the first feed screw nut 31 being threadedly coupled with promotion screw rod 8, and sliding module 3 further includes being fixed on the first screw rod
Connection frame 32 on nut 31, connecting rod 4 are hinged on connection frame 32.
Second driving mechanism has following embodiment:
Embodiment 1:
Such as Fig. 1~3, the second driving mechanism includes the second driving motor 9, and 9 output end of the second driving motor is connected with promotion
Screw rod 10, enhancing screw 10 are threadedly coupled with the second feed screw nut being fixed in inner bracing piece 51, have on inner bracing piece 51
Sliding block 511 has the sliding rail 211 to match with sliding block 511 on outer support bar 21.
Embodiment 2:
Such as Fig. 4~7, the second driving mechanism includes the second driving motor 9, and 9 output end of the second driving motor is connected with promotion
Screw rod 10, enhancing screw 10 are threadedly coupled with the second feed screw nut being fixed in inner bracing piece 51, and inner bracing piece 51 is equipped with
First slide block assembly 12, the first slide block assembly 12 include first main body fixed with inner bracing piece 51 and are used in outer support rod 21
Inner wall sliding or the first ligand for rolling cooperation.
First main body is the slider plate 121 being fixed on inner bracing piece 51, and the first ligand includes being rotatably connected on sliding block
Several first rolling elements 122 on plate 121, the first rolling element 122 roll on outer 21 inner wall of support rod.Inner bracing piece 51 and outer
Support rod 21 is rectangular tube, and the first rolling element 122, and the first of each side are equipped on four sides of slider plate 121
122 numbers at least two of rolling element.
At least two second slide block assemblies 16, the second slide block assembly are equipped between 51 inner wall of enhancing screw 10 and inner bracing piece
16 include that the second main body being mounted in enhancing screw 10 and the inner wall in inner bracing piece slide or roll the second of cooperation
Ligand.
Second main body is bearing mounting base 161, and enhancing screw 10 is connect by bearing with bearing mounting base 161, and second matches
Zoarium includes several second rolling elements 162 being rotatably connected on bearing mounting base 161, and the second rolling element 162 is in inner bracing piece
It is rolled on inner wall.
The upper and lower of enhancing screw 10 is arranged in the second slide block assembly 16 between 51 inner wall of enhancing screw 10 and inner bracing piece
The top of inner bracing piece 51 is arranged in both ends, the first slide block assembly 12.
Motor mount 13 is fixed on rotating turret 2, the second driving motor 9 is mounted on motor mount 13, and second drives
The output end of dynamic motor 9 is connected with driving gear 14, and the driven gear engaged with driving gear 14 is fixed in enhancing screw 10
15。
Control principle:
The first driving motor for defining two sides is respectively the first control motor and the second control motor, is corresponded to by the first control
Device and second controller control, or defining the second driving motor of two sides is respectively the first control motor and the second control electricity
Machine, it is corresponding to be controlled by the first controller and second controller.
Double direct current generator synchronously controls, warn the turnover mechanism of rack and elevating mechanism is driven by double direct current generators
It is dynamic, therefore it is related to the synchronously control problem of two motors, this project proposed adoption active motor+slave motor control program,
Concrete scheme is as follows: motor-driven initial speed n0 is set, by the first controller output pwm signal to driving circuit, and first
Motor rotation is controlled, the first velocity sensor measures the tach signal of the first control motor, and the tach signal is on the one hand as anti-
The revolving speed of feedback signal amendment the first control motor, on the other hand the input signal n1 as the second control motor, is controlled by second
Device output pwm signal is to driving circuit, the rotation of control the second control motor, while the second velocity sensor, the second control of measurement
The revolving speed n2 of motor processed is modified as revolving speed of the feedback signal to the second control motor, to realize the same of two direct current generators
Step control, as Fig. 8~9 show.
Warn shelf position control locating scheme (as shown in Figure 10, when warn gantry motion arrive guide rail both ends when, utilization
Limit switch automatically powers off protection to motor)
To protect motor stuck, normal condition is in normally off by left and right limit switch S1, S2, when motor goes to the limit
Limit switch disconnects when position.
Diode D1, D2 are to guarantee reverse-conducting, when loop voltage flows to anode by electrode negative, motor reversal,
Motor goes to extreme position after a period of time, and when limit switch S2 is disconnected, circuit is cut off, motor stalling, just to motor at this time
When pole flows to the voltage of cathode, voltage passes through D2 flow direction motor cathode, and motor rotates forward, S2 closure.D1 function is identical as D2.
It should be appreciated that described above, the specific embodiments are only for explaining the present invention, is not intended to limit the present invention.By
The obvious changes or variations that spirit of the invention is extended out are still in the protection scope of this invention.
Claims (10)
1. a kind of vehicle-mounted warning rack of highway, it is characterised in that: the chassis (1) including being fixed on roof, the chassis
(1) wherein one end is hinged with the rotating turret (2) along trunnion axis rotation for front and back, and the chassis (1) is equipped with along Vehicle length side
To the sliding module (3) of sliding, the first driving mechanism of its movement of driving is linked in the sliding module (3), it is described
It is hinged between sliding module (3) and rotating turret (2) connecting rod (4), stretches on the rotating turret (2) and be equipped with mounting rack (5), peace
It shelves (5) and is connected with the second driving mechanism for driving its stretching motion, the mounting rack (5) top is fixed with alarming device
(6)。
2. the vehicle-mounted warning rack of a kind of highway according to claim 1, it is characterised in that: the rotating turret (2)
Outer support bar (21) including being located at the left and right sides, the mounting rack (5) include positioned at the left and right sides and in outer support rod
(21) inner bracing piece (51) slided in, outer support bar (21) and inner bracing piece (51) correspond.
3. the vehicle-mounted warning rack of a kind of highway according to claim 1, it is characterised in that: the first driving mechanism includes
First driving motor (7), the output end of first driving motor (7), which is connected with, pushes screw rod (8), the sliding module
It (3) include the first feed screw nut (31) being threadedly coupled with promotion screw rod (8), the sliding module (3) further includes being fixed on
Connection frame (32) on first feed screw nut (31), the connecting rod (4) are hinged on connection frame (32).
4. the vehicle-mounted warning rack of a kind of highway according to claim 2, it is characterised in that: second driving machine
Structure includes the second driving motor (9), and described the second driving motor (9) output end is connected with enhancing screw (10), and described mentions
It rises screw rod (10) to be threadedly coupled with the second feed screw nut being fixed in inner bracing piece (51), the inner bracing piece has on (51)
Have sliding block (511), there is the sliding rail (211) to match with sliding block (511) on the outer support bar (21).
5. the vehicle-mounted warning rack of a kind of highway according to claim 2, it is characterised in that: second driving machine
Structure includes the second driving motor (9), and described the second driving motor (9) output end is connected with enhancing screw (10), and described mentions
It rises screw rod (10) to be threadedly coupled with the second feed screw nut being fixed in inner bracing piece (51), the inner bracing piece is set on (51)
Have the first slide block assembly (12), first slide block assembly (12) includes first main body and use fixed with inner bracing piece (51)
In in the first ligand that outer support rod (21) inner wall slides or rolling cooperates.
6. the vehicle-mounted warning rack of a kind of highway according to claim 5, it is characterised in that: first main body is
The slider plate (121) being fixed on inner bracing piece (51), first ligand include being rotatably connected on slider plate (121)
Several first rolling elements (122), first rolling element (122) rolls on outer support rod (21) inner wall.
7. the vehicle-mounted warning rack of a kind of highway according to claim 6, it is characterised in that: the enhancing screw
(10) at least two second slide block assemblies (16), second slide block assembly (16) are equipped between inner bracing piece (51) inner wall
Including the second main body being mounted on enhancing screw (10) and cooperate for the inner wall sliding or rolling in inner bracing piece second
Ligand.
8. the vehicle-mounted warning rack of a kind of highway according to claim 7, it is characterised in that: second main body is
Bearing mounting base (161), the enhancing screw (10) are connect by bearing with bearing mounting base (161), and described second matches
Zoarium includes several second rolling elements (162) being rotatably connected on bearing mounting base (161), second rolling element
(162) it is rolled on inner bracing piece inner wall.
9. the vehicle-mounted warning rack of a kind of highway according to claim 8, it is characterised in that: enhancing screw (10) with it is interior
Upper and lower ends of the second slide block assembly (16) setting in enhancing screw (10) between support rod (51) inner wall, the first slide block assembly
(12) it is arranged on the top of inner bracing piece (51).
10. according to a kind of described in any item vehicle-mounted warning racks of highway of claim 4~9, it is characterised in that: described
It is fixed on rotating turret (2) motor mount (13), the second driving motor (9) is mounted on motor mount (13), and second drives
The output end of dynamic motor (9) is connected with driving gear (14), is fixed in the enhancing screw (10) and driving gear (14)
The driven gear (15) of engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423925.XA CN110042777A (en) | 2019-05-21 | 2019-05-21 | A kind of vehicle-mounted warning rack of highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423925.XA CN110042777A (en) | 2019-05-21 | 2019-05-21 | A kind of vehicle-mounted warning rack of highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110042777A true CN110042777A (en) | 2019-07-23 |
Family
ID=67282902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910423925.XA Pending CN110042777A (en) | 2019-05-21 | 2019-05-21 | A kind of vehicle-mounted warning rack of highway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110042777A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409332A (en) * | 2019-08-30 | 2019-11-05 | 长安大学 | A kind of folding warning sign |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156370Y (en) * | 2008-02-28 | 2008-11-26 | 陈时升 | Traffic management prompt apparatus |
| CN202258167U (en) * | 2011-08-23 | 2012-05-30 | 重庆迪马工业有限责任公司 | Large roof light-emitting diode (LED) screen overturning mechanism |
| CN203221940U (en) * | 2013-01-29 | 2013-10-02 | 惠州华阳通用电子有限公司 | Display screen overturning mechanism |
| CN103342112A (en) * | 2013-07-31 | 2013-10-09 | 中国人民解放军第三军医大学第三附属医院 | Warning device and warning method for expressway engineering van |
| CN207637442U (en) * | 2017-12-21 | 2018-07-20 | 李玉龙 | A kind of foldable hiding LED display |
| CN207739178U (en) * | 2017-10-23 | 2018-08-17 | 上海阳道智能交通设施有限公司 | Towed cushion bumper car body |
| CN208848582U (en) * | 2018-11-12 | 2019-05-10 | 季德垒 | A kind of adjustable engineering management publicity board |
| CN210420931U (en) * | 2019-05-21 | 2020-04-28 | 淮阴师范学院 | Vehicle-mounted warning rack for expressway |
| CN210454658U (en) * | 2019-05-21 | 2020-05-05 | 淮安信息职业技术学院 | Stable vehicle-mounted warning rack |
-
2019
- 2019-05-21 CN CN201910423925.XA patent/CN110042777A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156370Y (en) * | 2008-02-28 | 2008-11-26 | 陈时升 | Traffic management prompt apparatus |
| CN202258167U (en) * | 2011-08-23 | 2012-05-30 | 重庆迪马工业有限责任公司 | Large roof light-emitting diode (LED) screen overturning mechanism |
| CN203221940U (en) * | 2013-01-29 | 2013-10-02 | 惠州华阳通用电子有限公司 | Display screen overturning mechanism |
| CN103342112A (en) * | 2013-07-31 | 2013-10-09 | 中国人民解放军第三军医大学第三附属医院 | Warning device and warning method for expressway engineering van |
| CN207739178U (en) * | 2017-10-23 | 2018-08-17 | 上海阳道智能交通设施有限公司 | Towed cushion bumper car body |
| CN207637442U (en) * | 2017-12-21 | 2018-07-20 | 李玉龙 | A kind of foldable hiding LED display |
| CN208848582U (en) * | 2018-11-12 | 2019-05-10 | 季德垒 | A kind of adjustable engineering management publicity board |
| CN210420931U (en) * | 2019-05-21 | 2020-04-28 | 淮阴师范学院 | Vehicle-mounted warning rack for expressway |
| CN210454658U (en) * | 2019-05-21 | 2020-05-05 | 淮安信息职业技术学院 | Stable vehicle-mounted warning rack |
Non-Patent Citations (1)
| Title |
|---|
| 王爱玲等: "《现代数控机床》", 国防工业出版社, pages: 62 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409332A (en) * | 2019-08-30 | 2019-11-05 | 长安大学 | A kind of folding warning sign |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206800248U (en) | A kind of easy access type camera based on Intelligent Vehicle Monitoring System | |
| CN102029938B (en) | Unfolding-type mobile service publicizing vehicle | |
| CN110042777A (en) | A kind of vehicle-mounted warning rack of highway | |
| CN206986771U (en) | A kind of intelligent bend suggestion device and intelligent crooked road prompting system | |
| CN213681831U (en) | Road construction safety early warning device | |
| CN106683229A (en) | Vehicle driving recording instrument | |
| CN211079970U (en) | Road pile for road traffic management | |
| CN209785077U (en) | A inspection device for city guardrail | |
| CN104527494A (en) | Smart warning vehicle | |
| CN210420931U (en) | Vehicle-mounted warning rack for expressway | |
| CN213211342U (en) | Traffic control direction guiding device for parking | |
| CN210895852U (en) | Anti-collision early warning device for highway automobiles | |
| CN211943215U (en) | Bus driver safety device | |
| CN210000205U (en) | Highway tunnel detection vehicle | |
| CN111910563A (en) | Tide type lane robot with multiple identification functions | |
| CN216141936U (en) | Portable banister is used in vehicle discernment | |
| CN214363078U (en) | Fixed anticollision limit for height frame | |
| CN219992280U (en) | Card turning device | |
| CN215482553U (en) | Height limiting frame for municipal roads and bridges | |
| CN217480028U (en) | Bluetooth control switching-off device capable of off-line payment | |
| CN213512840U (en) | Side-mounted comprehensive road condition monitoring device | |
| CN213582580U (en) | Traffic guiding device of intelligent traffic system | |
| CN215104894U (en) | Collision intelligent detection portal frame | |
| CN208248076U (en) | Vehicle and its rear-view camera system | |
| CN214253422U (en) | Level crossing road safety early warning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |