CN220888381U - Warning device for municipal road construction - Google Patents
Warning device for municipal road construction Download PDFInfo
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- CN220888381U CN220888381U CN202322131713.9U CN202322131713U CN220888381U CN 220888381 U CN220888381 U CN 220888381U CN 202322131713 U CN202322131713 U CN 202322131713U CN 220888381 U CN220888381 U CN 220888381U
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 abstract description 15
- 238000012876 topography Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a warning device for municipal road construction, which comprises a driving box, wherein the inner side of the driving box is movably connected with a movable rod, the outer side of the movable rod is fixedly connected with a power gear, the outer side of the power gear is meshed with a transmission rack, the outer side of the movable rod is fixedly connected with a manual rotating handle, the top of the transmission rack is fixedly connected with a supporting push plate, the top of the supporting push plate is fixedly connected with a regulating square, the top of the regulating square is fixedly connected with a supporting plate, and the top of the supporting plate is movably connected with a warning plate. This warning device is used in municipal road construction, overall structure is simple, facilitates the use, has realized the purpose that warning device was convenient for adjust, and warning device can be adjusted according to the topography and the condition of job site, has improved warning device's application range, has guaranteed the effect of warning device to job site warning, satisfies in-service use's demand, has improved warning device's availability factor and result of use.
Description
Technical Field
The utility model relates to the technical field of warning devices, in particular to a warning device for municipal road construction.
Background
Municipal roads, which may also be referred to as urban roads, are constructed to provide safe, rapid, economical and comfortable conditions for people and vehicles to travel, and are one of the signs for the modernization of cities.
The utility model provides a municipal road is at the in-process of construction, usually need use warning device to warn the job site, so as to avoid passersby to go into the job site by mistake and cause the incident, for example, the LED warning device of municipal road construction that puts forward in China patent CN 213508142U, have place the weight box on appointed position, rotatory screw spindle can be with the awl of going into earth in can inserting earth, and take out spacing semi-ring and place in the mounting groove, can blow the LED warning board and blow and rotate when having the wind to stop the back can automatic re-setting under the effect of spring leaf, thereby can avoid the device to be blown the advantage of turning over, but this design has the shortcoming of being inconvenient for regulation, lead to warning device can't adjust according to the topography and the condition of job site, the application range of warning device has been restricted, and then the effect of warning device to the job site warning has been influenced, inconvenient use, can not satisfy the demand of in-service, the use efficiency and the result of warning device is reduced.
Disclosure of utility model
(One) solving the technical problems
Aiming at the defects of the prior art, the warning device for municipal road construction provided by the utility model has the advantages of being convenient to adjust and the like, solves the problems that the conventional warning device for municipal road construction has the defect of being inconvenient to adjust, the warning device cannot be adjusted according to the topography and the condition of a construction site, limits the application range of the warning device, further influences the warning effect of the warning device on the construction site, is inconvenient to use, cannot meet the requirement of actual use, and reduces the use efficiency and the use effect of the warning device.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a warning device for municipal road construction, includes the drive case, the inboard swing joint of drive case has the movable rod, the outside fixedly connected with power gear of movable rod, power gear's outside meshing has the drive rack, the outside fixedly connected with manual turning handle of movable rod, the top fixedly connected with of drive rack supports the push pedal, the top fixedly connected with regulation square of support push pedal, the top fixedly connected with backup pad of regulation square, the top swing joint of backup pad has the warning board, the equal fixedly connected with of left and right sides at backup pad top is fixed the screw, two the equal threaded connection of inboard of fixed screw has the movable screw, two the equal fixedly connected with movable turning block of one end that the movable screw is on the back of the body, two the equal fixedly connected with rolling block of one end that the movable screw is relative, two the equal rotation in outside of rolling block is connected with movable splint, two the movable splint all with warning board swing joint.
Further, the bottom fixedly connected with supporting seat of drive case, the bottom fixedly connected with electric putter of supporting seat, four the equal fixedly connected with fly leaf in bottom of electric putter, four the equal fixedly connected with universal wheel in bottom of fly leaf, four the equal fixedly connected with brake in the outside of universal wheel.
Further, storage grooves are formed in the bottom of the supporting seat, the number of the storage grooves is four, the four electric push rods are located on the inner sides of the four storage grooves respectively, and the four movable plates, the four universal wheels and the four brakes are located under the four storage grooves respectively.
Further, the top of four fly leaf is equal fixedly connected with movable slide, fixed spout has been seted up to the inboard of drive case, movable slide and fixed spout sliding connection, movable slide and fixed spout all are the T style of calligraphy.
Further, antifriction bearing is fixedly connected with in the outside of movable rod, antifriction bearing and drive box fixed connection, the left end of movable rod runs through drive box, power gear and antifriction bearing in proper order and extends to antifriction bearing's inboard.
Further, the left and right sides of supporting the push pedal all fixedly connected with supports the slider, support the spout has all been seted up to the left and right sides wall of driving case, two support the slider respectively with two support spout sliding connection, the width of support the slider equals with the width that supports the spout.
Further, two the bottom of movable splint is all fixedly connected with removes the slider, the removal spout has been seted up at the top of backup pad, two remove the slider respectively with two removal spouts sliding connection, two remove slider and two and remove the spout and all be the T style of calligraphy.
Further, screw holes matched with the outer threads of the two movable screws are respectively formed in the inner sides of the two fixed screw blocks, and one end of the movable screw, which is far away from the movable rotating block, sequentially penetrates through the fixed screw blocks and the movable clamping plates and extends to the outer sides of the rolling blocks.
Further, fixed square holes are formed in the top of the driving box, the adjusting square is in sliding connection with the fixed square holes, the transmission rack and the supporting pushing plate are movably connected with the driving box, and the transmission rack and the supporting pushing plate are located on the inner side of the driving box.
(III) beneficial effects
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. This warning device is used in municipal road construction when need highly adjusting the warning board, can drive movable rod and power gear in proper order through rotating manual rotating handle and rotate, because power gear and transmission rack meshing, so power gear pivoted in-process can drive transmission rack in proper order, support the push pedal, adjust square, backup pad and warning board and reciprocate, the in-process that the warning board reciprocated can adjust the height of warning board, can adjust the warning board according to the condition on site, in order to guarantee the effect of warning board to the job site warning, overall structure is simple, facilitate the use, the purpose that warning device is convenient for adjust has been realized, warning device can adjust according to the topography and the condition of job site, warning device's application range has been improved, the effect of warning device to the job site warning has been guaranteed, the demand of in-service use has been satisfied, warning device's availability factor and result of use have been improved.
2. This warning device is used in municipal road construction when dismantling the change or wasing to the warning board, can drive two movable screw rotations respectively through rotating two movable rotating blocks, because two fixed screw blocks respectively with two movable screw threaded connection, so two movable screw pivoted in-process can drive two rolling blocks respectively and two movable splint do the removal of being on the back of the body, two movable splint do the in-process that the back of the body removed can be separated with the warning board, make the warning board lose spacingly, thereby can dismantle the change or wash the warning board, through above-mentioned principle, through the cooperation effect between two fixed screw blocks, two movable screw rods, two movable rotating blocks, two rolling blocks and two movable splint, can be with the stable top of installing the warning board in the backup pad, avoid the warning board to take place the phenomenon that drops at the in-process of warning to the job site, the effect of warning board to the job site warning has been guaranteed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a right side view of the drive box attachment structure of the present utility model;
FIG. 3 is a front view of the drive box attachment structure of the present utility model;
FIG. 4 is a top view of the drive case attachment structure of the present utility model;
Fig. 5 is an enlarged view of a portion a of fig. 1, which is a structural view of the present utility model.
In the figure: 1. a drive box; 2. a movable rod; 3. a power gear; 4. a drive rack; 5. a manual rotating handle; 6. a supporting push plate; 7. adjusting the square; 8. a support plate; 9. a warning board; 10. fixing the screw block; 11. a movable screw; 12. a movable rotating block; 13. a rolling block; 14. a movable clamping plate; 15. a support base; 16. an electric push rod; 17. a movable plate; 18. a universal wheel; 19. a brake; 20. a movable slide block; 21. a rolling bearing; 22. a movable slide block; 23. and moving the slide block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the warning device for municipal road construction in this embodiment includes a driving box 1, a movable rod 2 movably connected to the inner side of the driving box 1, a power gear 3 fixedly connected to the outer side of the movable rod 2, a driving rack 4 meshed to the outer side of the power gear 3, a manual rotating handle 5 fixedly connected to the outer side of the movable rod 2, a supporting push plate 6 fixedly connected to the top of the driving rack 4, an adjusting block 7 fixedly connected to the top of the supporting push plate 6, a supporting plate 8 fixedly connected to the top of the adjusting block 7, and a warning plate 9 movably connected to the top of the supporting plate 8.
The left and right sides at backup pad 8 top all fixedly connected with fixed screw block 10, the inboard equal threaded connection of two fixed screw blocks 10 has movable screw 11, the equal fixedly connected with movable rotating block 12 of the one end that two movable screw 11 are opposite to each other, the equal fixedly connected with rolling block 13 of the one end that two movable screw 11 are opposite, the outside of two rolling blocks 13 all rotates and is connected with movable splint 14, two movable splint 14 all with warning board 9 swing joint.
The bottom fixedly connected with supporting seat 15 of drive box 1, the bottom fixedly connected with electric putter 16 of supporting seat 15, the equal fixedly connected with fly leaf 17 of bottom of four electric putters 16, the equal fixedly connected with universal wheel 18 of bottom of four fly leaves 17, the equal fixedly connected with brake 19 in the outside of four universal wheels 18, the storage tank has been seted up to the bottom of supporting seat 15, and the quantity of storage tank is four, four electric putters 16 are located the inboard of four storage tanks respectively, four fly leaves 17, four universal wheels 18 and four brake 19 are located the four storage tanks respectively under.
The top of four fly leaves 17 all fixedly connected with movable slide 20, fixed spout has been seted up to the inboard of drive case 1, and movable slide 20 and fixed spout sliding connection, movable slide 20 and fixed spout all are the T style of calligraphy, and the outside fixedly connected with antifriction bearing 21 of movable rod 2, antifriction bearing 21 and drive case 1 fixed connection, and the left end of movable rod 2 runs through drive case 1, power gear 3 and antifriction bearing 21 in proper order and extends to antifriction bearing 21's inboard.
The rolling bearing 21 is composed of four parts, namely an inner ring, an outer ring, rolling bodies and a retainer, wherein the inner ring is matched with the movable rod 2 and rotates together with the movable rod 2, the outer ring is matched with the driving box 1 and plays a supporting role, the rolling bodies are uniformly distributed between the inner ring and the outer ring by means of the retainer, the retainer can uniformly distribute the rolling bodies, the rolling bodies are guided to rotate and play a lubricating role, the inner ring is fixedly connected with the movable rod 2, the outer ring is fixedly connected with the driving box 1, the inner ring and the outer ring are movably connected with the rolling bodies and the retainer, and the rolling bodies are movably connected with the retainer.
The left and right sides that supports push pedal 6 all fixedly connected with supports slider 22, support spout has all been seted up to the left and right sides wall of drive case 1, two support sliders 22 respectively with two support spouts sliding connection, support slider 22's width equals with the width of support spout, the bottom of two movable clamp plates 14 all fixedly connected with removes slider 23, the removal spout has been seted up at the top of backup pad 8, two remove slider 23 respectively with two removal spouts sliding connection, two remove slider 23 and two removal spouts all are the T style of calligraphy.
The screw holes matched with the outer threads of the two movable screw rods 11 are respectively formed in the inner sides of the two fixed screw blocks 10, one end of the movable screw rod 11, far away from the movable rotating block 12, sequentially penetrates through the fixed screw blocks 10 and the movable clamping plates 14 and extends to the outer sides of the rolling blocks 13, the two movable clamping plates 14 are movably connected with the supporting plate 8, the two movable clamping plates 14 are U-shaped, the top of the driving box 1 is provided with a fixed square hole, the adjusting square block 7 is slidably connected with the fixed square hole, the length of the adjusting square block 7 is equal to that of the fixed square hole, the width of the adjusting square block 7 is equal to that of the fixed square hole, the transmission rack 4 and the supporting pushing plate 6 are movably connected with the driving box 1, and the transmission rack 4 and the supporting pushing plate 6 are located in the inner side of the driving box 1.
In addition, through setting up drive box 1, can hide movable rod 2, power gear 3, drive rack 4 and support push pedal 6, through setting up movable rod 2, can support power gear 3, through setting up power gear 3 and drive rack 4, can support push pedal 6, through setting up support push pedal 6, can support adjusting block 7, through setting up adjusting block 7, can support backup pad 8, through setting up backup pad 8, can support warning board 9, through setting up fixed square hole, can guarantee adjusting block 7 gliding effect, through setting up two rolling blocks 13, can restrict two movable clamp plates 14 and carry out circumference rotation, can improve two movable screw 11 pivoted stability simultaneously.
Through setting up two movable clamp plates 14, can guarantee the stability of warning board 9 centre gripping, through setting up supporting seat 15, can support drive case 1, through setting up the storage tank, can hide electric putter 16, fly leaf 17, universal wheel 18 and brake 19, through setting up electric putter 16, can drive fly leaf 17 in proper order, universal wheel 18 and brake 19 reciprocate, through setting up fly leaf 17, can support universal wheel 18 and brake 19, through setting up universal wheel 18, can remove supporting seat 15, drive case 1, regulation square 7, backup pad 8 and warning board 9.
Through setting up four brakes 19, can fix four universal wheels 18 respectively, through setting up movable slider 20 and fixed spout, can improve the stability that movable plate 17 reciprocated, through setting up antifriction bearing 21, can improve movable rod 2 pivoted stability, through setting up two support sliders 22 and two support spouts, can improve the stability that support push pedal 6 reciprocated, through setting up two movable slider 23 and two movable spouts, can improve the stability that two movable clamping plates 14 moved about.
The working principle of the embodiment is as follows:
(1) When the height of the warning plate 9 needs to be adjusted, the movable rod 2 and the power gear 3 can be sequentially driven to rotate by rotating the manual rotating handle 5, and because the power gear 3 is meshed with the transmission rack 4, the supporting push plate 6, the adjusting block 7, the supporting plate 8 and the warning plate 9 can be sequentially driven to move up and down in the rotating process of the power gear 3, the height of the warning plate 9 can be adjusted in the vertical moving process of the warning plate 9, and the warning plate 9 can be adjusted according to the condition of a site so as to ensure the warning effect of the warning plate 9 on the construction site.
(2) When the warning plate 9 needs to be disassembled, replaced or cleaned, the two movable rotating blocks 12 can be rotated to respectively drive the two movable screws 11 to rotate, and because the two fixed screw blocks 10 are respectively in threaded connection with the two movable screws 11, the two movable screws 11 can respectively drive the two rolling blocks 13 and the two movable clamping plates 14 to do back-to-back movement in the rotating process, the two movable clamping plates 14 can be separated from the warning plate 9 in the back-to-back movement process, so that the warning plate 9 is lost to limit, and the warning plate 9 can be disassembled, replaced or cleaned.
(3) Through the principle, through the cooperation effect between two fixed screw blocks 10, two movable screw rods 11, two movable rotating blocks 12, two rolling blocks 13 and two movable clamping plates 14, the warning plate 9 can be stably arranged above the supporting plate 8, the phenomenon that the warning plate 9 falls off in the process of warning a construction site is avoided, and the warning effect of the warning plate 9 on the construction site is guaranteed.
(4) When the warning board 9 needs to be moved, the four movable plates 17, the four universal wheels 18 and the four brakes 19 can be respectively driven to move downwards by the four electric push rods 16, the four universal wheels 18 and the four brakes 19 can be moved out of the inner sides of the supporting seats 15, so that the supporting seats 15 can be supported by the four universal wheels 18, and at the moment, the supporting seats 15, the driving box 1, the adjusting blocks 7, the supporting plates 8 and the warning board 9 can be moved by the four universal wheels 18, and the warning board 9 can be moved to a designated place for use.
(5) When the warning board 9 needs to be positioned and warned, the four universal wheels 18 are fixed through the four brakes 19 respectively, then through the principle, the four movable plates 17, the four universal wheels 18 and the four brakes 19 can be driven to move upwards through the four electric push rods 16 respectively, the four universal wheels 18 and the four brakes 19 can be moved to the inner side of the supporting seat 15, so that the supporting seat 15 is attached to the ground, the supporting seat 15, the driving box 1, the regulating square 7, the supporting plate 8 and the warning board 9 can be positioned, the phenomenon that the warning board 9 shakes or deviates in the using process is avoided, and the warning board 9 is guaranteed to warn the construction site.
Compared with the prior art, the warning device has the advantages that the whole structure is simple, the use is convenient, the purpose that the warning device is convenient to adjust is achieved, the warning device can be adjusted according to the topography and the condition of a construction site, the use range of the warning device is improved, the warning effect of the warning device on the construction site is guaranteed, the requirement of actual use is met, and the use efficiency and the use effect of the warning device are improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Warning device is used in municipal road construction, including driving case (1), its characterized in that: the automatic alarm device is characterized in that a movable rod (2) is movably connected to the inner side of the driving box (1), a power gear (3) is fixedly connected to the outer side of the movable rod (2), a transmission rack (4) is meshed to the outer side of the power gear (3), a manual rotating handle (5) is fixedly connected to the outer side of the movable rod (2), a supporting push plate (6) is fixedly connected to the top of the transmission rack (4), an adjusting square block (7) is fixedly connected to the top of the supporting push plate (6), a supporting plate (8) is fixedly connected to the top of the adjusting square block (7), and an alarm plate (9) is movably connected to the top of the supporting plate (8);
The utility model discloses a warning board, including backup pad (8), fixed screw block (10) of equal fixedly connected with in left and right sides at backup pad (8) top, two equal threaded connection of inboard of fixed screw block (10) has movable screw (11), two equal fixedly connected with movable rotating block (12) of one end that movable screw (11) are opposite, two equal fixedly connected with rolling block (13) of one end that movable screw (11) is relative, two the equal rotation in outside of rolling block (13) is connected with movable splint (14), two movable splint (14) all with warning board (9) swing joint.
2. The warning device for municipal road construction according to claim 1, wherein: the bottom fixedly connected with supporting seat (15) of driving case (1), the bottom fixedly connected with electric putter (16) of supporting seat (15), four the equal fixedly connected with fly leaf (17) of bottom of electric putter (16), four the equal fixedly connected with universal wheel (18) of bottom of fly leaf (17), four the equal fixedly connected with brake (19) in the outside of universal wheel (18).
3. The warning device for municipal road construction according to claim 2, wherein: the bottom of supporting seat (15) has seted up and has accomodate the groove, and accomodates the quantity in groove and be four electric putter (16) are located four inboard of accomodating the groove respectively, four fly leaf (17), four universal wheels (18) and four brake (19) are located four respectively and accomodate under the groove.
4. The warning device for municipal road construction according to claim 2, wherein: the top of four fly leaf (17) all fixedly connected with movable slide block (20), fixed spout has been seted up to the inboard of drive case (1), movable slide block (20) and fixed spout sliding connection, movable slide block (20) and fixed spout all are the T style of calligraphy.
5. The warning device for municipal road construction according to claim 1, wherein: the outside fixedly connected with antifriction bearing (21) of movable rod (2), antifriction bearing (21) and drive case (1) fixed connection, the left end of movable rod (2) runs through drive case (1), power gear (3) and antifriction bearing (21) in proper order and extends to antifriction bearing (21) inboard.
6. The warning device for municipal road construction according to claim 1, wherein: the left side and the right side of the supporting push plate (6) are fixedly connected with supporting sliding blocks (22), the left side wall and the right side wall of the driving box (1) are provided with supporting sliding grooves, the two supporting sliding blocks (22) are respectively and slidably connected with the two supporting sliding grooves, and the width of the supporting sliding blocks (22) is equal to that of the supporting sliding grooves.
7. The warning device for municipal road construction according to claim 1, wherein: the bottom of two movable clamp plates (14) all fixedly connected with removes slider (23), the removal spout has been seted up at the top of backup pad (8), two remove slider (23) respectively with two removal spouts sliding connection, two remove slider (23) and two removal spouts all are the T style of calligraphy.
8. The warning device for municipal road construction according to claim 1, wherein: screw holes matched with the outer threads of the two movable screws (11) are respectively formed in the inner sides of the two fixed screw blocks (10), and one end, far away from the movable rotating block (12), of the movable screw (11) sequentially penetrates through the fixed screw blocks (10) and the movable clamping plates (14) and extends to the outer sides of the rolling blocks (13).
9. The warning device for municipal road construction according to claim 1, wherein: the top of driving case (1) has seted up fixed square hole, regulation square (7) and fixed square hole sliding connection, transmission rack (4) and support push pedal (6) all with driving case (1) swing joint, transmission rack (4) and support push pedal (6) all are located the inboard of driving case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322131713.9U CN220888381U (en) | 2023-08-09 | 2023-08-09 | Warning device for municipal road construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322131713.9U CN220888381U (en) | 2023-08-09 | 2023-08-09 | Warning device for municipal road construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220888381U true CN220888381U (en) | 2024-05-03 |
Family
ID=90870502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322131713.9U Active CN220888381U (en) | 2023-08-09 | 2023-08-09 | Warning device for municipal road construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220888381U (en) |
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2023
- 2023-08-09 CN CN202322131713.9U patent/CN220888381U/en active Active
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