CN115188302B - Safety propaganda equipment for construction engineering construction management field - Google Patents
Safety propaganda equipment for construction engineering construction management field Download PDFInfo
- Publication number
- CN115188302B CN115188302B CN202111589469.XA CN202111589469A CN115188302B CN 115188302 B CN115188302 B CN 115188302B CN 202111589469 A CN202111589469 A CN 202111589469A CN 115188302 B CN115188302 B CN 115188302B
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- 238000009430 construction management Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 title description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 230000007306 turnover Effects 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000012876 topography Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005215 recombination Methods 0.000 abstract 1
- 230000006798 recombination Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F21/00—Mobile visual advertising
- G09F21/06—Mobile visual advertising by aeroplanes, airships, balloons, or kites
- G09F21/12—Mobile visual advertising by aeroplanes, airships, balloons, or kites the advertising matter being towed by the aircraft
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F17/00—Flags; Banners; Mountings therefor
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Toys (AREA)
Abstract
The invention discloses safety propaganda equipment for the field of construction management of building engineering, which comprises an upper frame and a lower frame, wherein a crosspiece is fixedly connected with the middle part of the lower frame, an unmanned aerial vehicle is arranged at the top of the crosspiece, displays are arranged on two sides of the bottom of the crosspiece through turnover mechanisms, sound boxes are arranged at two ends of the top of the upper frame, a banner propaganda mechanism arranged at the bottom of the upper frame is arranged at the bottom of the sound box, and a travelling mechanism is arranged in the U-shaped frame, so that the safety propaganda equipment has the following beneficial effects: can make equipment have the ability of flight through the unmanned aerial vehicle that sets up, the content that the display shows of recombination and the content of stereo set broadcast can be so that propaganda in-process not receive the influence of putting the topography, writes safe propaganda slogan on the banner through the banner that banner propaganda mechanism set up, the same purpose that also can realize safe propaganda to the in-process of propaganda can be better attractor watch, play the purpose of accurate high-efficient propaganda to the constructor of first line.
Description
Technical Field
The invention relates to the technical field of construction management of building engineering, in particular to safety propaganda equipment for the field of construction management of the building engineering.
Background
In construction engineering construction management, a safety propaganda device is usually required, for example, a safety propaganda board is combined with an outer frame and advertising cloth, so that a construction site safety management system and a standard are propaganda. The safety propaganda board plays a role in propaganda on a construction site safety production management system, and carries out safety education and warning on management personnel and site construction operators, so that the safety propaganda board is an indispensable part of a construction site.
However, the existing safety propaganda board design generally adopts a steel structure, is relatively heavy and flexible in use, can only be used basically at fixed points when being used for safety propaganda, so that the effect of the safety propaganda is poor, the propaganda content of the existing safety propaganda board cannot be changed according to the construction requirement of each stage in the use process, the propaganda effect is reduced, meanwhile, the existing safety propaganda board is relatively troublesome to assemble and disassemble after being used, can only be used as a disposable article generally, and the accurate and efficient propaganda purpose cannot be achieved when certain waste is caused to material resources.
Disclosure of Invention
The invention aims to provide safety propaganda equipment for the field of construction management of constructional engineering, so as to solve the problems that the conventional full propaganda board provided by the background art cannot change propaganda contents according to construction requirements of each stage in the use process, the propaganda effect is reduced, and meanwhile, the conventional safety propaganda board is relatively troublesome to assemble and disassemble after use.
In order to achieve the above purpose, the present invention provides the following technical solutions: a safety propaganda equipment for building engineering construction management field, includes frame and underframe, install four first electric telescopic handle and four second electric telescopic handle between frame and the underframe, the expansion end of first electric telescopic handle runs through the frame and arranges its top in, the expansion end of second electric telescopic handle runs through the underframe and arranges its bottom in, the middle part fixedly connected with crosspiece of underframe, unmanned aerial vehicle between frame and underframe is arranged in at the top of crosspiece, the display is all installed through tilting mechanism to the bottom both sides of crosspiece, the stereo set is all installed at the top both ends of going up the frame, the stereo set bottom is equipped with the banner propaganda mechanism of installing in last frame bottom, a plurality of U type framves are all installed to the top both sides of going up the frame, the internally mounted of U type frame has running gear.
As a preferred mode of the present invention: the telescopic end heads of the first electric telescopic rod and the second electric telescopic rod are fixedly provided with supporting pads, and the maximum extension length of the second electric telescopic rod is larger than the vertical height of the turnover mechanism.
As a preferred mode of the present invention: the turnover mechanism comprises a connecting strip arranged on one side of the bottom of the crosspiece, wherein mounting frames are arranged at two ends of the connecting strip through damping rotating shafts, and one side of each mounting frame is buckled with the display.
As a preferred mode of the present invention: the scroll propaganda mechanism comprises an L-shaped shell arranged at the bottom of a lower frame, a gear motor is arranged on one side of the top of the L-shaped shell, a connecting rod arranged inside the L-shaped shell is arranged at one end of the gear motor, one end of the connecting rod is rotationally connected with a bearing seat inside the L-shaped shell, a winding roller is fixedly sleeved outside the connecting rod, a scroll is wound outside the winding roller, and a strip-shaped metal balancing weight is arranged at one end of the scroll.
As a preferred mode of the present invention: the bottom of L type casing is equipped with the strip opening, the internally mounted of strip opening has the electro-magnet.
As a preferred mode of the present invention: the running gear is including installing in the inside wheel carrier of U type frame, electronic driving sprocket is installed at the top of wheel carrier, driven sprocket is all installed at electronic driving sprocket's both ends, be connected through the track transmission between electronic driving sprocket and the two driven sprocket.
As a preferred mode of the present invention: the sum of the weights of the sound and the banner propaganda mechanism is equal to the sum of the weights of the plurality of travelling mechanisms.
As a preferred mode of the present invention: the top of the upper frame is provided with a plurality of first cameras, and the bottom of the lower frame is provided with a plurality of second cameras.
As a preferred mode of the present invention: the wireless remote control system comprises a first camera, a second camera, a first electric telescopic rod, a second electric telescopic rod, a display, a sound box, a gear motor, an electromagnet and an electric driving sprocket, wherein the first camera, the second camera, the first electric telescopic rod, the second electric telescopic rod, the display, the sound box, the gear motor, the electromagnet and the electric driving sprocket are all electrically connected with a singlechip, the singlechip is electrically connected with a built-in battery of the unmanned aerial vehicle, and the singlechip is further electrically connected with a wireless signal transceiver.
Compared with the prior art, the invention has the beneficial effects that:
1) The upper frame and the lower frame are arranged, so that the turnover mechanism, the display, the sound, the banner propaganda mechanism and the traveling mechanism are arranged, a better protective effect can be achieved on the unmanned aerial vehicle, a user is prevented from touching the fan blade of the unmanned aerial vehicle by mistake, the safety of the safety propaganda equipment in use is improved, the unmanned aerial vehicle can enable the equipment to have flying capability, the content displayed by the display and the content played by the sound are combined, the propaganda process is not influenced by the throwing topography, the safety propaganda banner is written on the banner through the banner propaganda mechanism, the safety propaganda purpose can be achieved, the safety propaganda can be better observed by attractive personnel in the propaganda process, and the purpose of accurately and efficiently propaganda is achieved for the first-line constructor;
2) Can support equipment when safety propaganda equipment descends through the second electric telescopic handle that sets up, prevent that the display screen from damaging, can make equipment walk on the ground through running gear that sets up to cooperation display and stereo set, the same purpose that can realize safety propaganda in a flexible way, when needing fixed point propaganda, stretch out first electric telescopic handle, lift running gear off ground can, increase the practicality of this safety propaganda equipment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic diagram of the turnover mechanism of the present invention;
FIG. 4 is a schematic diagram of a banner propaganda mechanism in accordance with the present invention;
FIG. 5 is a schematic diagram of the internal structure of the banner advertising mechanism of the present invention;
fig. 6 is a schematic view of the structure of the travelling mechanism of the invention.
In the figure: 1. an upper frame; 11. a U-shaped frame; 12. a first camera; 2. a lower frame; 21. a crosspiece; 22. a second camera; 3. a first electric telescopic rod; 4. a second electric telescopic rod; 5. unmanned plane; 6. a turnover mechanism; 61. a connecting strip; 62. damping the rotating shaft; 63. a mounting frame; 7. a display; 8. a sound box; 9. a banner propaganda mechanism; 91. an L-shaped housing; 92. a speed reducing motor; 93. a bearing seat; 94. a wind-up roll; 95. a banner; 96. a metal balancing weight; 97. an electromagnet; 10. a walking mechanism; 101. a wheel carrier; 102. an electric drive sprocket; 103. a driven sprocket; 104. a track.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: a safety propaganda equipment for building engineering construction management field, including last frame 1 and lower frame 2, install four first electric telescopic handle 3 and four second electric telescopic handle 4 between last frame 1 and the lower frame 2, the expansion end of first electric telescopic handle 3 runs through last frame 1 and arranges its top in, the expansion end of second electric telescopic handle 4 runs through lower frame 2 and arranges its bottom in, the middle part fixedly connected with crosspiece 21 of lower frame 2, unmanned aerial vehicle 5 between last frame 1 and lower frame 2 is installed at the top of crosspiece 21, display 7 is all installed through tilting mechanism 6 to the bottom both sides of crosspiece 21, stereo 8 is all installed at the top both ends of last frame 1, stereo 8 bottom is equipped with the banner propaganda mechanism 9 of installing in last frame 1 bottom, a plurality of U type frame 11 are all installed to the top both sides of last frame 1, the internally mounted of U type frame 11 has running gear 10.
In this embodiment: the telescopic end heads of the first electric telescopic rod 3 and the second electric telescopic rod 4 are fixedly provided with supporting pads, and the maximum extension length of the second electric telescopic rod 4 is larger than the vertical height of the turnover mechanism 6.
Specifically, when the safety propaganda device needs to conduct safety propaganda in the air, the second electric telescopic rod 4 can be extended, the device is supported by the supporting pad, the turnover mechanism 6 drives the display 7 to be turned over by 90 degrees, and the display 7 can be prevented from being damaged when the device is lifted up and down through the second electric telescopic rod 4; when this safety propaganda equipment needs to carry out safety propaganda on ground, can overturn equipment, then with first electric telescopic handle 3 withdrawal for running gear 10's track 104 and ground contact can make equipment carry out walking propaganda subaerial, when needs fixed point propaganda, with first electric telescopic handle 3 extend, utilize supporting pad and ground support can, can realize then that this safety propaganda equipment carries out kind of form propaganda.
In this embodiment: the turnover mechanism 6 comprises a connecting strip 61 arranged at one side of the bottom of the crosspiece 21, a mounting frame 63 is arranged at two ends of the connecting strip 61 through a damping rotating shaft 62, and one side of the mounting frame 63 is buckled with the display 7.
Specifically, when carrying out aerial propaganda, upset mounting bracket 63 for mounting bracket 63 carries display 7 to rotate around damping pivot 62, utilizes display 7 to show the content of safe propaganda, and the safe propaganda audio frequency of cooperation stereo set 8 broadcast again can make this equipment accomplish not receive the influence of throwing the topography when propaganda, and at unmanned aerial vehicle 5 flight's in-process, display 7 is vertical downwards moreover, can effectively reduce display 7 and mounting bracket 63 to unmanned aerial vehicle 5's normal flight influence.
In this embodiment: the scroll propaganda mechanism 9 is including installing in the L type casing 91 of lower frame 2 bottom, gear motor 92 is installed to the top one side of L type casing 91, the connecting rod of arranging in L type casing 91 inside is installed to gear motor 92's one end, the one end of connecting rod rotates with the inside bearing frame 93 of L type casing 91 to be connected, the outside fixed wind-up roll 94 that has cup jointed of connecting rod, the outside wrap-up of wind-up roll 94 has scroll 95, banding metal balancing weight 96 is installed to the one end of scroll 95, the bottom of L type casing 91 is equipped with the strip opening, strip open-ended internally mounted has electro-magnet 97.
Specifically, when this equipment utilized unmanned aerial vehicle 5 to fly, still can control gear motor 92 and rotate, electro-magnet 97 outage utilizes pivoted gear motor 92 to drive connecting rod and wind-up roll 94 and rotates, make the banner 95 emit from L type casing 91, and the banner 95 can effectively guarantee under the action of gravity of metal balancing weight 96 that the banner 95 drops in the bottom of lower frame 2, avoid banner 95 and unmanned aerial vehicle 5 to take place the winding simultaneously, utilize the content of writing on the banner 95, the same purpose that can realize safe propaganda, when equipment needs to descend, control gear motor 92 is with the winding of banner 95 in L type casing 91, simultaneously control electro-magnet 97 circular telegram, can, the scroll 95 takes place the winding when preventing equipment from descending to metal balancing weight 96 magnetism absorption.
In this embodiment: the travelling mechanism 10 comprises a wheel frame 101 arranged in a U-shaped frame 11, an electric driving sprocket 102 is arranged at the top of the wheel frame 101, driven sprockets 103 are arranged at two ends of the electric driving sprocket 102, and the electric driving sprocket 102 is in transmission connection with the two driven sprockets 103 through a crawler 104.
Specifically, by controlling the electric driving sprocket 102 to rotate, the rotating electric driving sprocket 102 cooperates with the driven sprocket 103 to rotate the crawler 104, so that the propaganda equipment walks on the ground for propaganda, and when the equipment needs to turn, only the electric driving sprockets 102 on two sides need to be controlled to rotate independently; the crawler belt running mode is adopted for the running of the equipment, so that the equipment can be suitable for running of various terrains.
Preferably, the sum of the weights of the sound 8 and the banner propaganda mechanism 9 is equal to the sum of the weights of the plurality of traveling mechanisms 10, so that the stability of the unmanned aerial vehicle 5 in the flight process can be effectively improved.
In this embodiment: a plurality of first cameras 12 are installed at the top of the upper frame 1, and a plurality of second cameras 22 are installed at the bottom of the lower frame 2.
Specifically, the first camera 12 arranged can monitor the propaganda process of the equipment on the ground, and the second camera 22 arranged can monitor the propaganda process of the equipment in the flight, so that personnel can know the running state of the equipment.
In this embodiment: the first camera 12, the second camera 22, the first electric telescopic rod 3, the second electric telescopic rod 4, the display 7, the sound 8, the gear motor 92, the electromagnet 97 and the electric driving sprocket 102 are all electrically connected with a single chip microcomputer, the single chip microcomputer is electrically connected with a built-in battery of the unmanned aerial vehicle 5, and the single chip microcomputer is further electrically connected with a wireless signal transceiver.
Specifically, wireless connection is established with the control terminal through the wireless signal transceiver that sets up, and the singlechip can realize wireless control to first camera 12, second camera 22, first electric telescopic handle 3, second electric telescopic handle 4, display 7, stereo set 8, gear motor 92, electro-magnet 97 and electronic driving sprocket 102 again.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features thereof, and any modifications, equivalent substitutions, improvements and the like within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (4)
1. A safety propaganda equipment for building engineering construction management field, includes frame (1) and lower frame (2), its characterized in that: four first electric telescopic rods (3) and four second electric telescopic rods (4) are arranged between the upper frame (1) and the lower frame (2), the telescopic ends of the first electric telescopic rods (3) penetrate through the upper frame (1) and are arranged at the top of the upper frame, the telescopic ends of the second electric telescopic rods (4) penetrate through the lower frame (2) and are arranged at the bottom of the lower frame, a crosspiece (21) is fixedly connected with the middle part of the lower frame (2), an unmanned aerial vehicle (5) arranged between the upper frame (1) and the lower frame (2) is arranged at the top of the crosspiece (21), a display (7) is arranged at two sides of the bottom of the crosspiece (21) through turnover mechanisms (6), sound boxes (8) are arranged at two ends of the top of the upper frame (1), a plurality of U-shaped frames (11) are arranged at two sides of the top of the upper frame (1), and a traveling mechanism (10) is arranged inside the U-shaped frames (11);
the telescopic end heads of the first electric telescopic rod (3) and the second electric telescopic rod (4) are fixedly provided with supporting pads, and the maximum extension length of the second electric telescopic rod (4) is larger than the vertical height of the turnover mechanism (6);
the turnover mechanism (6) comprises a connecting strip (61) arranged at one side of the bottom of the crosspiece (21), mounting frames (63) are arranged at two ends of the connecting strip (61) through damping rotating shafts (62) arranged, and one side of each mounting frame (63) is buckled with the display (7);
the scroll propaganda mechanism (9) comprises an L-shaped shell (91) arranged at the bottom of the lower frame (2), a gear motor (92) is arranged on one side of the top of the L-shaped shell (91), a connecting rod arranged inside the L-shaped shell (91) is arranged at one end of the gear motor (92), one end of the connecting rod is rotationally connected with a bearing seat (93) inside the L-shaped shell (91), a winding roll (94) is fixedly sleeved outside the connecting rod, a scroll (95) is wound outside the winding roll (94), and a strip-shaped metal balancing weight (96) is arranged at one end of the scroll (95);
the bottom of the L-shaped shell (91) is provided with a strip-shaped opening, and an electromagnet (97) is arranged in the strip-shaped opening;
the walking mechanism (10) comprises a wheel frame (101) arranged in the U-shaped frame (11), an electric driving sprocket (102) is arranged at the top of the wheel frame (101), driven sprockets (103) are arranged at two ends of the electric driving sprocket (102), and the electric driving sprocket (102) is in transmission connection with the two driven sprockets (103) through a crawler belt (104).
2. A security propaganda device for use in the field of construction management of building engineering according to claim 1, characterized in that: the sum of the weights of the sound (8) and the banner propaganda mechanism (9) is equal to the sum of the weights of the plurality of travelling mechanisms (10).
3. A security propaganda device for use in the field of construction management of building engineering according to claim 2, characterized in that: the top of the upper frame (1) is provided with a plurality of first cameras (12), and the bottom of the lower frame (2) is provided with a plurality of second cameras (22).
4. A security propaganda device for use in the field of construction management of building engineering according to claim 3, characterized in that: the intelligent unmanned aerial vehicle is characterized in that the intelligent unmanned aerial vehicle comprises a first camera (12), a second camera (22), a first electric telescopic rod (3), a second electric telescopic rod (4), a display (7), a sound box (8), a speed reducing motor (92), an electromagnet (97) and an electric driving sprocket (102) which are electrically connected with a single chip microcomputer, the single chip microcomputer is electrically connected with a built-in battery of the unmanned aerial vehicle (5), and the single chip microcomputer is electrically connected with a wireless signal transceiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111589469.XA CN115188302B (en) | 2021-12-23 | 2021-12-23 | Safety propaganda equipment for construction engineering construction management field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111589469.XA CN115188302B (en) | 2021-12-23 | 2021-12-23 | Safety propaganda equipment for construction engineering construction management field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115188302A CN115188302A (en) | 2022-10-14 |
| CN115188302B true CN115188302B (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111589469.XA Active CN115188302B (en) | 2021-12-23 | 2021-12-23 | Safety propaganda equipment for construction engineering construction management field |
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| Country | Link |
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| CN (1) | CN115188302B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206734641U (en) * | 2017-02-28 | 2017-12-12 | 广州虹蓝飞科技有限公司 | A kind of unmanned plane for carrying display |
| CN107705734A (en) * | 2017-11-06 | 2018-02-16 | 郑州航空港飘天下物联网科技有限公司 | It is a kind of can be on ground and the amphibious billboard of aerial mobile |
| CN108682363A (en) * | 2018-07-26 | 2018-10-19 | 佛山市神风航空科技有限公司 | A kind of advertisement robot |
| KR101968577B1 (en) * | 2019-01-30 | 2019-04-16 | 대한민국 | A Multi-purpose drone for forest disaster |
| CN211810281U (en) * | 2020-03-24 | 2020-10-30 | 济宁市鹰视角电子科技有限责任公司 | Airborne banner winding and unwinding devices of unmanned aerial vehicle |
| CN212966773U (en) * | 2020-10-21 | 2021-04-13 | 马鞍山职业技术学院 | Unmanned aerial vehicle is used in outdoor teaching with display device |
-
2021
- 2021-12-23 CN CN202111589469.XA patent/CN115188302B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206734641U (en) * | 2017-02-28 | 2017-12-12 | 广州虹蓝飞科技有限公司 | A kind of unmanned plane for carrying display |
| CN107705734A (en) * | 2017-11-06 | 2018-02-16 | 郑州航空港飘天下物联网科技有限公司 | It is a kind of can be on ground and the amphibious billboard of aerial mobile |
| CN108682363A (en) * | 2018-07-26 | 2018-10-19 | 佛山市神风航空科技有限公司 | A kind of advertisement robot |
| KR101968577B1 (en) * | 2019-01-30 | 2019-04-16 | 대한민국 | A Multi-purpose drone for forest disaster |
| CN211810281U (en) * | 2020-03-24 | 2020-10-30 | 济宁市鹰视角电子科技有限责任公司 | Airborne banner winding and unwinding devices of unmanned aerial vehicle |
| CN212966773U (en) * | 2020-10-21 | 2021-04-13 | 马鞍山职业技术学院 | Unmanned aerial vehicle is used in outdoor teaching with display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115188302A (en) | 2022-10-14 |
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