CN110670503A - Road sign is used in construction - Google Patents
Road sign is used in construction Download PDFInfo
- Publication number
- CN110670503A CN110670503A CN201910993939.5A CN201910993939A CN110670503A CN 110670503 A CN110670503 A CN 110670503A CN 201910993939 A CN201910993939 A CN 201910993939A CN 110670503 A CN110670503 A CN 110670503A
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- Prior art keywords
- sliding plug
- sign
- cleaning
- air bag
- fixedly connected
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/619—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings with reflectors; with means for keeping reflectors clean
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- 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
- E01F9/617—Illuminated or wired-up posts, bollards, pillars or like upstanding bodies or structures for traffic guidance, warning or control
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention discloses a road sign for construction, which comprises a stand column rod and a sign fixedly connected to the side wall of the stand column rod, wherein a device cavity is formed in the side wall of the upper end part of the stand column rod, a telescopic air bag is fixedly connected to the inner top of the device cavity, a fixing piece is fixedly installed at the lower end of the telescopic air bag, and a cleaning mechanism for cleaning the surface of the sign is installed on the fixing piece. According to the invention, through arranging the driving mechanism, the telescopic air bag, the cleaning mechanism, the spiral coil, the magnetic stripe and the indicating lamp, self-cleaning of the surface of the indicating plate can be realized, so that a driver can clear and master road conditions, and meanwhile, manual cleaning is not needed, so that the danger of falling easily during manual cleaning is avoided, the labor intensity of construction workers is reduced, and meanwhile, the indicating lamp bar can be made to emit light during cleaning so as to enhance the warning effect of the road indicating plate, so that the indicating device not only attracts the driver to actively watch and obtain indicating contents, but also better helps the driver to obtain the indicating contents.
Description
Technical Field
The invention relates to the technical field of construction equipment, in particular to a road sign for construction.
Background
In the process of bridge construction or highway construction, in order to save construction time, a plurality of construction sites are generally required to be operated at the same time, and then a plurality of points are connected into a complete bridge line or a public line, so that a construction site of a project can span a plurality of roads, and various road indicators for indicating road conditions are arranged on the roads, so as to indicate drivers who pass by to and fro to avoid the construction site to drive, and simultaneously indicate a driving path for drivers who are responsible for material transportation of the construction site.
But because neighbouring building site, it has thick dust to cover usually on these roads, and the general big freight train for transportation of building site of adding back and forth can be raisd the dust on the road in a large number when going, therefore a period of time later, the road sign surface that these building sites used can cover more dust, the instruction content on the sign can be sheltered from to the dust, thereby lead to the driver of coming and going to be unable to acquire the road condition, not only make the vehicle of passing by the road mistake break through the building site easily, cause unnecessary danger, still make the transport driver can't find the correct route easily, and then lead to unable in time transporting building material to the position that needs.
In the prior art, construction workers are often arranged to climb onto the upright posts of each road sign regularly to manually clean the surface of the sign, the cleaning mode needs to climb to a higher height for cleaning, operation is troublesome, cleaning efficiency is low, and the acquisition of indication contents of the sign by a driver can be influenced when cleaning is carried out by cleaning personnel; moreover, because the number of the signs on the road is large, the mode has the defect of high labor intensity, and the heights of the signs are high, so that cleaning personnel can fall from a high place when cleaning and have certain dangers.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a road sign for construction, which can realize self-cleaning of the surface of the sign by arranging a driving mechanism, a telescopic air bag, a wiping mechanism, a spiral coil, a magnetic strip and an indicator light, can remove dust on the surface of the sign, enables a driver to clear and master road conditions, reduces the occurrence probability of traffic accidents at the position, simultaneously does not need manual cleaning, avoids the danger of easy falling during manual cleaning, reduces the labor intensity of construction workers, can also enable the indicator light bar to emit light during cleaning so as to enhance the warning effect of the road sign, attracts the driver to actively watch and obtain indication contents, and better helps the driver to obtain the indication contents.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a road sign for construction, includes stand pole and the sign of fixed connection at the stand pole lateral wall, the device chamber has been seted up in the lateral wall of stand pole upper end, the flexible gasbag of interior top fixedly connected with in device chamber, the lower extreme fixed mounting of flexible gasbag has the mounting, install the wiping mechanism who is used for wiping the sign surface on the mounting, the upper end fixedly connected with sliding plug section of thick bamboo of sign, the slope of sliding plug section of thick bamboo both sides wall is provided with the reflector panel, install the actuating mechanism who is used for driving the wiping mechanism action in the sliding plug section of thick bamboo.
Preferably, the wiping mechanism comprises a cleaning brush, the cleaning brush is fixedly connected to the side wall of the fixing piece through a connecting rod, a sliding groove communicated with the device cavity is formed in the side wall, close to the indication board, of the upright post rod in the vertical direction, and the connecting rod is connected between the inner walls of the sliding groove in a sliding mode.
Preferably, the driving mechanism comprises a sliding plug which is connected to the inner wall of the sliding plug barrel in a sealing and sliding mode, evaporating liquid is filled between one end, away from the stand column rod, of the sliding plug and the inner wall of the sliding plug barrel, the end, close to the stand column rod, of the sliding plug barrel is communicated with the upper end of the telescopic air bag, an opening is formed in one side, away from the stand column rod, of the upper end of the sliding plug barrel, and a convex lens is embedded in the opening.
Preferably, a coil groove is formed in the side wall of the upright post and located below the device cavity and communicated with the device cavity, an indicator light bar is arranged on the periphery of the indicator content on the indicator, a spiral coil coupled with the indicator light bar is fixedly mounted in the coil groove, and a magnetic strip is fixedly connected to the lower end of the fixing piece.
The invention has the following beneficial effects:
1. by arranging the driving mechanism, the wiping mechanism and the telescopic air bag, the evaporating liquid can be heated to reach a certain temperature for evaporation and gasification by utilizing irradiation of sunlight, so that the sliding plug is pushed to move to push air in the sliding plug cylinder into the telescopic air bag, the telescopic air bag is inflated and expanded, the cleaning brush is pushed to move downwards to brush off dust covered on the surface of the sign, and in the absence of sunlight, the evaporating liquid is gradually cooled and liquefied to generate negative pressure, the air in the telescopic air bag is pumped back to the sliding plug cylinder to contract the telescopic air bag, the cleaning brush is driven to move upwards to clean the surface of the sign again, so that the surface of the sign can be covered without dust, the indication content is prevented from being shielded by dust, a driver can clear and master the road condition, and the occurrence probability of traffic accidents is reduced;
2. by arranging the driving mechanism, the cleaning mechanism and the telescopic air bag, the self-cleaning of the indicator can be realized, construction workers do not need to climb onto the upright post rod to clean the indicator manually, the labor intensity of the workers is reduced, and the danger that the workers are easy to fall when cleaning is avoided;
3. the opening and the convex lens with the area far larger than the cross section area of the space where the positive evaporation liquid is located are arranged, so that sunlight passing through the convex lens is gathered in the space where the evaporation liquid is located under the action of the convex lens, the heat absorption efficiency of the evaporation liquid is greatly increased, and the temperature of the evaporation liquid can reach the boiling point temperature under the light gathering action of the convex lens when the temperature is low in winter;
4. by arranging the inclined reflector, sunlight which is irradiated on the surface of the reflector but cannot be irradiated on the surface of the sliding plug cylinder can be reflected to the surface of the sliding plug cylinder, so that the utilization rate of the sunlight is improved, the evaporation rate of the evaporated liquid is increased, and the evaporated liquid can reach the boiling temperature in winter;
5. the cleaning brush moves when being stained with dust, and shields part of the indicating content, so that a driver can not well obtain the indicating content, the spiral coil, the indicating light bar and the magnetic strip are arranged, the magnetic strip can be driven to synchronously move up and down when the cleaning brush moves, so that the magnetic flux in the spiral coil changes, induction current is generated on the spiral coil, and the indicating light bar emits light;
6. the air volume that lies in the sliding plug right-hand member in the sliding plug section of thick bamboo just in time enough makes the lower extreme of flexible gasbag expand to the position of device intracavity bottom, both can guarantee that the cleaning brush just can displace to sign lower extreme position when the evaporating liquid evaporates, clean comprehensively to the sign, also can guarantee that flexible gasbag can not continue the inflation again when expanding to device intracavity bottom, prevent that flexible gasbag from need aerifing and taking place to damage under the condition that can't continue the inflation.
Drawings
FIG. 1 is a schematic structural view of a road sign for construction according to the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural view of a road signboard for construction according to the present invention, in which a telescopic air bag is expanded;
fig. 4 is a schematic structural view of embodiment 2.
In the figure: the device comprises a stand column rod 1, an indicator plate 2, a sliding plug cylinder 3, a device cavity 4, a telescopic air bag 5, a fixing piece 6, a connecting rod 7, a sliding chute 8, a cleaning brush 9, a sliding plug 10, an opening 11, a convex lens 12, a reflector plate 13, a magnetic stripe 14, a coil groove 15, a spiral coil 16 and an indicator light bar 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-3, a road sign for construction comprises a column rod 1 and a sign 2 fixedly connected to the side wall of the column rod 1, a device cavity 4 is formed in the side wall of the upper end portion of the column rod 1, a telescopic airbag 5 is fixedly connected to the inner top of the device cavity 4, a fixing piece 6 is fixedly mounted at the lower end of the telescopic airbag 5, and a cleaning mechanism for cleaning the surface of the sign 2 is mounted on the fixing piece 6.
The cleaning mechanism comprises a cleaning brush 9, the cleaning brush 9 is fixedly connected to the side wall of the fixing part 6 through a connecting rod 7, in order to enable the cleaning brush 9 to brush dust on the surface of the indication board 2 when moving up and down, the brush surface of the cleaning brush 9 is in contact with the surface of the indication board 2, and in order to ensure that the cleaning brush 9 cannot excessively shield the indication board 2 when moving up and down to clean the indication board 2, the cleaning brush 9 is transparent, a chute 8 communicated with the device cavity 4 is formed in the vertical direction of the side wall, close to the indication board 2, of the upright post rod 1, the connecting rod 7 is slidably connected between the inner walls of the chute 8, and the chute 8; the connecting rod 7 plays a limiting role, and the connecting rod 7 is prevented from being inclined when the telescopic air bag 5 expands.
The upper end fixedly connected with sliding plug section of thick bamboo 3 of sign 2, 3 both sides wall symmetry slopes of sliding plug section of thick bamboo are provided with reflector panel 13, reflector panel 13 can be with shining on its surperficial sunshine reflection to sliding plug section of thick bamboo 3 on the surface, thereby promote the utilization ratio of sunshine, install the actuating mechanism who is used for driving clean mechanism action in the sliding plug section of thick bamboo 3, actuating mechanism includes the sliding plug 10 of sealed sliding connection at the inner wall of sliding plug section of thick bamboo 3, it has the evaporating liquid to fill between the one end that upright post pole 1 was kept away from to sliding plug 10 and the 3 inner walls of sliding plug section of thick bamboo, the tip that sliding plug section of thick bamboo 3 is close to upright post pole 1 and flexible gasbag 5 upper end intercommunication, opening 11 has been seted up to one side that upright post pole 1 was kept away from to sliding plug section of thick bamboo 3 upper end, the embedded convex lens 12 that is.
Furthermore, the evaporating liquid is dichloromethane, the boiling point of the dichloromethane is 39.75 ℃, and the sliding plug cylinder 3 is a transparent glass cylinder, compared with other colored device cylinders, the heat is absorbed the least when sunlight is directly irradiated on the transparent glass cylinder, so that more heat is absorbed by the evaporating liquid in the glass cylinder, meanwhile, the area of the opening 11 is far larger than the cross-sectional area of a space where the evaporating liquid is not evaporated, therefore, the sunlight of the convex lens 12 is converged and irradiated on the evaporating liquid under the action of the convex lens 12, so that the heat absorption efficiency of the evaporating liquid is greatly increased, and the temperature of the evaporating liquid can reach the boiling point temperature under the light gathering action of the convex lens 12 when the temperature is lower in winter.
When the evaporating liquid reaches the boiling point temperature, the evaporating liquid is heated and evaporated, when the evaporating liquid is evaporated, a large amount of liquid is gasified, so that large air pressure is generated in the sliding plug cylinder 3, the sliding plug 10 is pushed to slide towards the right end of the sliding plug cylinder 3, and the heat insulation plate 13 can store the high temperature for a long time, so that the evaporating liquid is completely gasified.
It should be noted that, in order to ensure that the cleaning brush 9 can displace to the lower end position of the indication board 2 when the evaporation liquid evaporates, the air volume at the right end of the sliding plug 10 in the sliding plug cylinder 3 just needs to be enough to expand the lower end of the telescopic airbag 5 to the position of the bottom in the device cavity 4, so that the cleaning brush 9 can be ensured to clean the indication board 2 comprehensively, the telescopic airbag 5 can be ensured not to continue to expand when expanding to the bottom in the device cavity 4, and the telescopic airbag 5 is prevented from continuing to inflate under the condition that the expansion cannot be continued, so that the damage occurs.
In summer, the temperature is high, when the sun is coming out in the morning, the evaporating liquid can approach the boiling point temperature under the action of sunlight irradiation and light rays collected by the convex lens 12, at the moment, the evaporating liquid starts to evaporate, the evaporating liquid is gasified to increase the air pressure in the sliding plug cylinder 3, so that the sliding plug 10 is pushed to slide rightwards, the air at the right end of the sliding plug 10 in the sliding plug cylinder 3 is pushed into the telescopic air bag 5, the telescopic air bag 5 is inflated and expanded, the fixing part 6 at the lower end of the telescopic air bag 5 can move downwards under the expansion action of the telescopic air bag 5, so that the cleaning brush 9 is driven to move on the surface of the sign 2, dust on the surface of the sign 2 is brushed away, and then the evaporating liquid is always in a gasified state, the telescopic air bag 5 cannot retract, and the cleaning brush 9 is positioned at the lower end of the;
until after sunset in the evening, no sunlight irradiates on the sliding plug cylinder 3, the temperature of the evaporating liquid is gradually reduced, the evaporating liquid is converted into a liquid state at the moment, the volume is greatly reduced, negative pressure is generated at the left end of the sliding plug 10 in the sliding plug cylinder 3, the sliding plug 10 is pulled leftwards, so that air in the telescopic air bag 5 is pumped back into the sliding plug cylinder 3, the telescopic air bag 5 is contracted upwards under the action of self elasticity, the fixing piece 6 drives the cleaning brush 9 to displace on the surface of the sign 2 again, and dust on the surface of the sign 2 is brushed away again.
In spring and autumn and winter, the temperature is low, until noon, the evaporating liquid can be close to the boiling point temperature under the action of sunlight irradiation and light gathered by the convex lens 12, and then the evaporating liquid is heated and evaporated, so that the cleaning brush 9 moves downwards to brush off dust on the surface of the sign 2; when the afternoon approaches the sunset time, the air temperature is low at this time, the evaporating liquid is changed into liquid, and the action of brushing off the dust on the surface of the sign 2 by upward displacement of the cleaning brush 9 occurs.
Above-mentioned road sign is used in construction, can carry out the automatically cleaning to the sign surface twice at least every day, brush the dust on 2 surfaces of sign, can prevent that the dust that 2 surface of sign covers the road instruction content, make the driver clear away and master the road conditions, reduce the emergence probability of this department traffic accident, need not artifical cleanness simultaneously, the danger of falling takes place easily when both having avoided artifical cleanness, construction worker's intensity of labour has also been reduced, it is very heavy and mostly has stronger practical application meaning to have for the region of big freight train round trip to this kind of dust of building site.
Example 2
Referring to fig. 4, the difference from embodiment 1 is that: the utility model discloses a device cavity 4 below department has seted up coil groove 15 in 1 lateral wall of stand pole, coil groove 15 and device cavity 4 intercommunication, the open area of coil groove 15 is less than the lower extreme area of mounting 6, flexible gasbag 5 can not expand downwards when expanding to device cavity 4 bottom again, the periphery of instructing the content on sign 2 all is provided with indicator light strip 17, indicator light strip 17's shape is identical with the shape of instructing the content completely, can play the effect that the content is the same to instruct road conditions, fixed mounting has the spiral coil 16 with indicator light strip 17 coupling in the coil groove 15, the lower extreme fixedly connected with magnetic stripe 14 of mounting 6, still be provided with the current amplification module with spiral coil 16 coupling in the device cavity 4.
It should be noted that the spiral coil 16 is arranged along the vertical direction, and when the magnetic strip 14 is displaced downward and extends into the spiral coil 16, according to the electromagnetic induction principle, the magnetic flux in the spiral coil 16 is increased, so that an induced current is generated on the spiral coil 16; when the magnetic strip 14 moves upwards and comes out of the spiral coil 16, the magnetic flux in the spiral coil 16 is reduced, so that induced current is generated on the spiral coil 16 again, and since the evaporation of the evaporation liquid is a relatively slow process, the moving speed of the magnetic strip 14 is slow, the induced current on the spiral coil 16 is small, so that the arrangement of the current amplification module can amplify the induced current on the spiral coil 16 enough to supply power to the indicator light bar 17.
Therefore, when the evaporating liquid is heated and evaporated, so that air is pushed into the telescopic air bag 5, the telescopic air bag 5 is inflated and expanded, and the cleaning brush 9 moves downwards, the magnetic strip 14 is pushed to move downwards under the expansion effect of the telescopic air bag 5 and extends into the spiral coil 16, and in the moving-down process of the magnetic strip 14, the magnetic flux in the spiral coil 16 is increased all the time, and induced current is generated on the spiral coil 16, so that the indicator light bar 17 is electrified and shines, when the telescopic air bag 5 does not expand any more and the magnetic strip 14 does not move any more, the magnetic flux in the spiral coil 16 does not change any more, the induced current disappears, and the indicator light bar 17 does not shine any more;
when the evaporation gas is liquefied when being cooled, the negative pressure draws the air in the telescopic air bag 5 back into the sliding plug cylinder 3, the telescopic air bag 5 contracts upwards, when the cleaning brush 9 moves upwards, the magnetic strip 14 moves upwards, the magnetic flux in the spiral coil 16 begins to decrease, induction current is generated on the spiral coil 16 again, the indicating light bar 17 is electrified again to emit light, and the induction current is not generated on the spiral coil 16 any more and the indicating light bar 17 does not emit light any more after the magnetic strip 14 leaves the spiral coil 16.
The cleaning brush 9 self surface is stained with the dust and can shelter from partial instruction content when the displacement on sign 2, if just there is the vehicle to pass through this moment then the driver can not obtain instruction content well, and the setting of above-mentioned structure makes when cleaning brush 9 moves on sign 2 surface, instruction lamp strip 17 will give out light in order to strengthen the warning effect of road sign, not only can come more to attract driver's attention through luminous instruction lamp strip 17, make its road sign of paying attention to this place, can also help the driver to obtain instruction content better, prevent that the driver from sheltering from because of cleaning brush 9 and can't obtain instruction content well when the process.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The utility model provides a road sign for construction, includes sign (2) of stand pole (1) and fixed connection at stand pole (1) lateral wall, a serial communication port, device chamber (4) have been seted up to the lateral wall of stand pole (1) upper end, the flexible gasbag (5) of interior top fixedly connected with of device chamber (4), the lower extreme fixed mounting of flexible gasbag (5) has mounting (6), install on mounting (6) and be used for cleaning the wiping mechanism on sign (2) surface, the upper end fixedly connected with sliding plug section of thick bamboo (3) of sign (2), the slope of sliding plug section of thick bamboo (3) both sides wall symmetry is provided with reflector panel (13), install in sliding plug section of thick bamboo (3) and be used for the drive to clean mechanism moving actuating mechanism.
2. The road sign board for construction according to claim 1, wherein the wiping mechanism comprises a cleaning brush (9), the cleaning brush (9) is fixedly connected to the side wall of the fixing member (6) through a connecting rod (7), the side wall of the upright post rod (1) close to the sign board (2) is vertically provided with a sliding groove (8) communicated with the device cavity (4), and the connecting rod (7) is slidably connected between the inner walls of the sliding groove (8).
3. The road sign board for construction according to claim 1, wherein the driving mechanism comprises a sliding plug (10) which is connected to the inner wall of a sliding plug cylinder (3) in a sealing and sliding manner, an evaporating liquid is filled between one end of the sliding plug (10) far away from the upright post rod (1) and the inner wall of the sliding plug cylinder (3), the end part of the sliding plug cylinder (3) close to the upright post rod (1) is communicated with the upper end of the telescopic air bag (5), an opening (11) is formed in one side of the upper end of the sliding plug cylinder (3) far away from the upright post rod (1), and a convex lens (12) is embedded in the opening (11).
4. The road sign board for construction according to claim 1, wherein a coil groove (15) is formed in the side wall of the upright post rod (1) and located below the device cavity (4), the coil groove (15) is communicated with the device cavity (4), an indicating light bar (17) is arranged on the indication board (2) at the periphery of the indication content, a spiral coil (16) coupled with the indicating light bar (17) is fixedly installed in the coil groove (15), and a magnetic strip (14) is fixedly connected to the lower end of the fixing piece (6).
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| CN201910993939.5A CN110670503A (en) | 2019-10-18 | 2019-10-18 | Road sign is used in construction |
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| CN201910993939.5A CN110670503A (en) | 2019-10-18 | 2019-10-18 | Road sign is used in construction |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101455A (en) * | 2020-01-21 | 2020-05-05 | 安徽鹏祥新能源有限公司 | Bridge road sign board maintenance of equipment |
| CN111203440A (en) * | 2020-01-13 | 2020-05-29 | 刘璇璇 | Environment-friendly is from exhaust apparatus for soil remediation |
| CN111663473A (en) * | 2020-06-12 | 2020-09-15 | 吴院连 | Self-cleaning upright post for road partition |
| CN111733727A (en) * | 2020-06-12 | 2020-10-02 | 段鹏 | Partition for queuing and separating |
| CN112359746A (en) * | 2020-11-10 | 2021-02-12 | 郭俊 | Automatically cleaning road reflector |
| CN112376994A (en) * | 2020-11-17 | 2021-02-19 | 潘煜亭 | Building construction is with keeping out wind and suppressing dirt guardrail |
| CN112387639A (en) * | 2020-11-05 | 2021-02-23 | 江苏昊视科技发展有限公司 | Multifunctional intelligent room selection system |
| CN112813872A (en) * | 2020-12-18 | 2021-05-18 | 安徽童瑞金属制品有限公司 | Multifunctional emergency indicator board for road emergency repair |
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| CN112387639A (en) * | 2020-11-05 | 2021-02-23 | 江苏昊视科技发展有限公司 | Multifunctional intelligent room selection system |
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Application publication date: 20200110 |