CN114104273A - Agricultural unmanned aerial vehicle suitable for descending on multiple terrains - Google Patents
Agricultural unmanned aerial vehicle suitable for descending on multiple terrains Download PDFInfo
- Publication number
- CN114104273A CN114104273A CN202111634663.5A CN202111634663A CN114104273A CN 114104273 A CN114104273 A CN 114104273A CN 202111634663 A CN202111634663 A CN 202111634663A CN 114104273 A CN114104273 A CN 114104273A
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- Prior art keywords
- unmanned aerial
- aerial vehicle
- wall
- undercarriage
- groups
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- 230000035939 shock Effects 0.000 claims description 9
- 238000007790 scraping Methods 0.000 claims description 6
- 238000012876 topography Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/58—Arrangements or adaptations of shock-absorbers or springs
- B64C25/62—Spring shock-absorbers; Springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/12—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like sideways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
- B64C25/36—Arrangements or adaptations of wheels, tyres or axles in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2101/00—UAVs specially adapted for particular uses or applications
Abstract
The invention discloses an agricultural unmanned aerial vehicle suitable for multi-terrain landing, and relates to the technical field of agricultural unmanned aerial vehicles, wherein the technical scheme is as follows: the undercarriage control mechanism comprises an airframe, undercarriage retraction grooves are formed in the bottom of the airframe, four undercarriage retraction grooves are formed in the four undercarriage retraction grooves, two undercarriage retraction grooves on the same side are distributed in a staggered mode, a first rotating shaft is fixedly mounted on the inner wall of each undercarriage retraction groove, the four undercarriage retraction grooves are connected with an undercarriage in a rotating mode, each undercarriage comprises an outer support rod, an electric telescopic rod, a supporting seat, a shock-absorbing spring and an inner support rod, and a driving assembly is fixedly mounted at the bottom of each inner support rod.
Description
Technical Field
The invention relates to the technical field of agricultural unmanned aerial vehicles, in particular to an agricultural unmanned aerial vehicle suitable for multi-terrain landing.
Background
Unmanned aerial vehicle is called unmanned aerial vehicle for short, is the unmanned aerial vehicle who utilizes radio remote control equipment and the program control device of self-contained to control, and there is not the cockpit on the machine, but installs equipment such as autopilot, program control device, along with the continuous change of science and technology level, also adopts intelligent means to provide planting efficiency in the aspect of farming gradually, adopts special unmanned aerial vehicle of agricultural to spray insecticide, looks over planting condition etc. usually, and agricultural unmanned aerial vehicle usage is very extensive at present.
The prior art has the following defects: present agricultural unmanned aerial vehicle is when using, because the agricultural is planted the district, according to the crop difference of planting, the soil condition in planting the district is various, when agricultural unmanned aerial vehicle falls to the ground, can lead to taking off once more comparatively difficultly because the topography is not good to influence agricultural unmanned aerial vehicle's normal use.
Therefore, the agricultural unmanned aerial vehicle suitable for multi-terrain landing is needed to be invented.
Disclosure of Invention
Therefore, the agricultural unmanned aerial vehicle suitable for multi-terrain landing is provided, the length of the inner supporting rod can be conveniently adjusted through the electric telescopic rod by arranging the telescopic connection between the outer supporting rod and the inner supporting rod, so that the ground leveling condition of the agricultural unmanned aerial vehicle during landing can be conveniently adapted by adjusting different heights of the four groups of landing gears, the surface of the machine body is kept horizontal, the running safety of the machine body is improved, and the problems in the background technology are solved.
In order to achieve the above purpose, the invention provides the following technical scheme: an agricultural unmanned aerial vehicle suitable for multi-terrain landing comprises a machine body, wherein the bottom of the machine body is provided with undercarriage retracting grooves, the undercarriage retracting grooves are provided with four groups, the undercarriage retracting grooves are distributed in a staggered manner, two groups of undercarriage retracting grooves are arranged on the same side, a first rotating shaft is fixedly arranged on the inner wall of the undercarriage retracting groove, the four groups of undercarriage retracting grooves are rotatably connected with the undercarriage, the undercarriage comprises an outer support rod, an electric telescopic rod, a support seat, a shock-absorbing spring and an inner support rod, a driving assembly is fixedly arranged at the bottom of the inner support rod, a second rotating shaft of the driving assembly, a full disc motor, a roller, a non-slip mat and a mud scraper are arranged on the inner wall of the bottom of the outer support rod, the electric telescopic rod is fixedly arranged on the inner wall of the telescopic groove, the bottom of the electric telescopic rod is fixedly connected with the support seat, the bottom of the support seat is fixedly connected with the shock-absorbing spring, and a connecting frame is fixedly arranged at the bottom of the shock-absorbing spring, the bottom of the connecting frame is fixedly connected with the inner supporting rod.
Preferably, the inner wall of the telescopic groove is provided with two groups of limiting grooves, the limiting grooves are rectangular, and the two groups of limiting grooves are symmetrically arranged.
Preferably, the supporting seat, the connecting frame and the outer wall of the inner support rod are all in sliding connection with the inner wall of the telescopic groove, the guiding edges are fixedly installed on the supporting seat, the connecting frame and the outer wall of the inner support rod, and the outer walls of the guiding edges are in sliding connection with the inner wall of the limiting groove.
Preferably, the outer walls of the front end and the rear end of the machine body are provided with four rectangular grooves, four groups of rectangular grooves are symmetrically arranged in the front and the rear of the rectangular grooves, and the four groups of rectangular grooves are respectively distributed corresponding to the four groups of undercarriage.
Preferably, four groups of the rectangular groove inner walls are fixedly provided with the electronic gradienters, and the end parts of the rectangular grooves are fixedly provided with the transparent protection plates.
Preferably, a second gear is fixedly installed on the outer wall of the inner side of the top of the outer support rod, the inner walls of the four groups of undercarriage retraction grooves are fixedly provided with servo motors, a first gear is fixedly installed on the outer wall of an output shaft of each servo motor, and the first gear is meshed with the second gear.
Preferably, the bottom ends of the four groups of inner support rods are fixedly provided with roller frames, and the inner walls of the left side and the right side of each roller frame are rotatably connected with a second rotating shaft through bearings.
Preferably, the outer wall of the rotating shaft is fixedly provided with a full disk motor, and the outer wall of the full disk motor is fixedly provided with a roller.
Preferably, the outer wall of the roller is fixedly provided with an anti-slip mat, the outer wall of the anti-slip mat is uniformly provided with three-dimensional anti-slip lines, and the three-dimensional anti-slip lines are circular.
Preferably, the inner walls of the left side and the right side of the roller frame are fixedly provided with two groups of mud scrapers, and the included angles between the two groups of mud scrapers and the tangent line of the roller are 45 degrees.
The invention has the beneficial effects that:
1. by arranging the telescopic connection between the outer support rod and the inner support rod, the length of the inner support rod can be conveniently adjusted through the electric telescopic rod, so that the ground leveling condition of the agricultural unmanned aerial vehicle during landing can be conveniently adapted by adjusting different heights of the four groups of undercarriage, the surface of the machine body can be kept horizontal, and the running safety of the machine body is improved;
2. the four groups of electronic gradienters are arranged, so that the horizontal conditions at the four corners of the top of the machine body can be detected in time conveniently, whether the current position of the machine body is horizontal or not when the machine body falls is judged through the electronic gradienters, and the use intelligence of equipment is improved;
3. the shock absorption spring is arranged, so that the landing gear is buffered and damped, the use safety of the equipment is improved, the roller is prevented from being in rigid contact with the ground, and the use safety of the equipment is improved;
4. through setting up servo motor drive outer stay bar rotation angle to conveniently contract undercarriage when agricultural unmanned aerial vehicle flies and receive and release the inslot to, when descending, the convenient angle through adjusting the undercarriage, the landing environment of the many topography of convenient adaptation.
Drawings
FIG. 1 is a front view provided by the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a bottom view of the housing provided by the present invention;
FIG. 4 is a schematic representation of the landing gear operating configuration provided by the present invention;
FIG. 5 is a schematic view of the structure of the outer stay bar provided by the present invention;
FIG. 6 is a schematic view of an inner brace mounting structure provided in the present invention;
fig. 7 is a schematic view of a mounting structure of the driving assembly provided by the present invention.
In the figure: the landing gear automatic lifting device comprises a body 100, a rectangular groove 110, an electronic level meter 120, a landing gear retraction groove 130, a servo motor 140, a first gear 141, a first rotating shaft 150, a landing gear 200, an outer support rod 210, a second gear 211, a telescopic groove 212, a limit groove 213, an electric telescopic rod 220, a support seat 230, a shock absorbing spring 240, a connecting frame 250, an inner support rod 260, a guide rib 270, a roller frame 280, a driving assembly 300, a second rotating shaft 310, a full-plate motor 320, a roller 330, a non-slip mat 340 and a mud scraping plate 350.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to the accompanying drawings 1-7, the invention provides an agricultural unmanned aerial vehicle suitable for multi-terrain landing, and in order to achieve the purpose, the invention provides the following technical scheme: an agricultural unmanned aerial vehicle suitable for multi-terrain landing comprises a machine body 100, landing gear retraction grooves 130 are formed in the bottom of the machine body 100, four groups of landing gear retraction grooves 130 are formed in the landing gear retraction grooves 130, two groups of landing gear retraction grooves 130 on the same side are distributed in a staggered mode, a first rotating shaft 150 is fixedly installed on the inner wall of each landing gear retraction groove 130, the inner walls of the four groups of landing gear retraction grooves 130 are rotatably connected with a landing gear 200, each landing gear 200 comprises an outer supporting rod 210, an electric telescopic rod 220, a supporting seat 230, a shock absorbing spring 240 and an inner supporting rod 260, a driving assembly 300 is fixedly installed at the bottom of the inner supporting rod 260, a second rotating shaft 310 of the driving assembly 300, a full disc motor 320, a roller 330, a non-slip mat 340 and a mud scraping plate 350, a telescopic groove 212 is formed in the inner wall of the bottom of the outer supporting rod 210, an electric telescopic rod 220 is fixedly installed on the inner wall of the telescopic groove 212, the bottom of the electric telescopic rod 220 is fixedly connected with the supporting seat 230, the shock absorbing spring 240 is fixedly connected with the shock absorbing spring 240, and a connecting frame 250 is fixedly installed at the bottom of the shock absorbing spring, the bottom of the connecting frame 250 is fixedly connected with the inner supporting rod 260, the inner wall of the telescopic groove 212 is provided with a limiting groove 213, the limiting grooves 213 are arranged in a rectangular shape, two groups of limiting grooves 213 are symmetrically arranged, the outer walls of the supporting seat 230, the connecting frame 250 and the inner supporting rod 260 are in sliding connection with the inner wall of the telescopic groove 212, the outer walls of the supporting seat 230, the connecting frame 250 and the inner supporting rod 260 are fixedly provided with the guide ribs 270, the outer walls of the guide ribs 270 are in sliding connection with the inner wall of the limiting groove 213, specifically, the falling frame retracting and releasing groove 130 has the function of conveniently retracting and releasing the landing gear 200 when the agricultural unmanned aerial vehicle flies, the first rotating shaft 150 has the function of conveniently rotating and connecting the outer supporting rod 210, the outer supporting rod 210 has the function of conveniently installing the electric telescopic rod 220, the shock-absorbing spring 240 has the buffer and shock-absorbing effect on the landing gear 200, the function of avoiding the rigid connection with the ground to cause the equipment damage when the agricultural unmanned aerial vehicle descends, the equipment safety of using is improved, the inner supporting rod 260 is matched with the outer supporting rod 210, have and prevent conveniently contracting outside the inside effect of vaulting pole 210, spacing groove 213 uses with the cooperation of direction arris 270, conveniently guides and spacing effect to supporting seat 230, link 250 and interior vaulting pole 260, has improved the stability of equipment operation.
Further, rectangular channel 110 is all seted up to both ends outer wall around organism 100, the symmetry is equipped with four groups around rectangular channel 110, four groups of rectangular channels 110 correspond the distribution with four groups of undercarriage 200 respectively, the equal fixed mounting electron spirit level 120 of four groups of rectangular channel 110 inner walls, the transparent guard plate of rectangular channel 110 tip fixed mounting, it is specific, rectangular channel 110 has the effect of easy to assemble electron spirit level 120, four groups of electron spirit level 120 cooperate the use and have the effect of convenient detection organism 100 surface levelness, thereby the flexible length of vaulting pole 260 in convenient control electric telescopic handle 220 according to the horizontal condition in organism 100 top adjusts, rotate through control servo motor 140, thereby adjust undercarriage 200 deflection angle, thereby the convenience is adjusted according to the level condition that reduces ground, thereby make organism 100 keep the level.
Further, a second gear 211 is fixedly installed on the outer wall of the inner side of the top of the outer support rod 210, the servo motors 140 are fixedly installed on the inner walls of the four landing gear retraction slots 130, a first gear 141 is fixedly installed on the outer wall of an output shaft of each servo motor 140, the first gear 141 is meshed with the second gear 211, specifically, the first gear 141 and the second gear 211 are matched for use to achieve a transmission effect, and the servo motors 140 have the effect of facilitating the rotation of the first gear 141 so as to drive the outer support rod 210 to deflect.
Further, the bottom ends of the four groups of inner support rods 260 are all fixedly provided with the roller frame 280, the inner walls of the left side and the right side of the roller frame 280 are rotatably connected with the second rotating shaft 310 through bearings, the outer wall of the second rotating shaft 310 is fixedly provided with the full disc motor 320, the outer wall of the full disc motor 320 is fixedly provided with the rollers 330, the outer wall of the rollers 330 is fixedly provided with the anti-slip mats 340, the outer wall of the anti-slip mats 340 is uniformly distributed with three-dimensional anti-slip patterns (not marked in the figure), the three-dimensional anti-slip patterns are circular, the inner walls of the left side and the right side of the roller frame 280 are fixedly provided with the mud scraping plates 350, the mud scraping plates 350 are symmetrically provided with two groups in the front and back, the included angle between the two groups of mud scraping plates 350 and the rollers 330 is 45 degrees, specifically, the roller frame 280 has the function of conveniently installing the second rotating shaft 310, the full disc motor 320 has the function of conveniently driving the rollers 330 to rotate, and the rollers 330 have the function of conveniently pushing the body 100 to move on the ground, the slipmat 340 has skid-proof effect, has improved the performance of grabbing of gyro wheel 330, and the wiper 350 has the convenience when gyro wheel 330 rotates, with the effect that gyro wheel 330 surface adnexed earth scraped off to conveniently keep the clean degree on agricultural unmanned aerial vehicle surface and reduce agricultural unmanned aerial vehicle's load.
The using process of the invention is as follows: when the agricultural unmanned aerial vehicle is ready to land, levelness detection is performed on four corners of the body 100 through the four groups of electronic levels 120, so that the flight state of the agricultural unmanned aerial vehicle is corrected according to the detection condition of the four groups of electronic levels 120, when the agricultural unmanned aerial vehicle lands, the landing gear 200 is rotated downwards by driving the servo motor 140, the inner supporting rod 260 is pushed out by controlling the electric telescopic rod 220 to extend downwards, after the roller 330 lands, the level condition of the body 100 is continuously detected through the four groups of electronic levels 120, so that the deflection direction is adjusted by controlling the servo motor 140 to drive the outer supporting rod 210 to adjust the deflection direction, the telescopic length of the inner supporting rod 260 is controlled through the electric telescopic rod 220, so that the body 100 is adjusted to be kept in a horizontal state, the body 100 is conveniently protected to take off again, the agricultural unmanned aerial vehicle is prevented from being damaged, and the four groups of rollers 330 are controlled to rotate in and out by respectively driving the four groups of full-disc motors 320, the machine body 100 can be conveniently moved on the ground through the roller 330, and the practicability and convenience of the use of the equipment are improved.
The above is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an agricultural unmanned aerial vehicle suitable for descending many topography, includes organism (100), undercarriage receiving and releasing groove (130) are seted up to organism (100) bottom, undercarriage receiving and releasing groove (130) are equipped with four groups, and the homonymy is two sets of undercarriage receiving and releasing groove (130) distribution, its characterized in that staggers: the inner wall of the undercarriage retracting slot (130) is fixedly provided with a first rotating shaft (150), the inner walls of four undercarriage retracting slots (130) are rotatably connected with the undercarriage (200), the undercarriage (200) comprises an outer support rod (210), an electric telescopic rod (220), a support seat (230), a shock absorbing spring (240) and an inner support rod (260), the bottom of the inner support rod (260) is fixedly provided with a driving assembly (300), the driving assembly (300) comprises a second rotating shaft (310), a full disc motor (320), a roller (330), a non-slip mat (340) and a mud scraping plate (350), the inner wall of the bottom of the outer support rod (210) is provided with a telescopic slot (212), the inner wall of the telescopic slot (212) is fixedly provided with the electric telescopic rod (220), the bottom of the electric telescopic rod (220) is fixedly connected with the support seat (230), the bottom of the support seat (230) is fixedly connected with the shock absorbing spring (240), and the bottom of the shock absorbing spring (240) is fixedly installed with a connecting frame (250), the bottom of the connecting frame (250) is fixedly connected with an inner supporting rod (260).
2. The agricultural unmanned aerial vehicle suitable for landing on multiple terrains is characterized in that, limiting grooves (213) are formed in the inner walls of the telescopic grooves (212), the limiting grooves (213) are rectangular, and two groups of limiting grooves (213) are symmetrically arranged.
3. The agricultural unmanned aerial vehicle suitable for multi-terrain landing is characterized in that the outer walls of the supporting seat (230), the connecting frame (250) and the inner supporting rod (260) are slidably connected with the inner wall of the telescopic groove (212), the outer walls of the supporting seat (230), the connecting frame (250) and the inner supporting rod (260) are fixedly provided with guide ribs (270), and the outer walls of the guide ribs (270) are slidably connected with the inner wall of the limiting groove (213).
4. The agricultural unmanned aerial vehicle suitable for landing on multiple terrains according to claim 1, wherein rectangular grooves (110) are formed in outer walls of front and rear ends of the machine body (100), four groups of the rectangular grooves (110) are symmetrically arranged in the front and rear direction, and the four groups of the rectangular grooves (110) are respectively distributed corresponding to the four groups of the landing gears (200).
5. The agricultural unmanned aerial vehicle suitable for multi-terrain landing according to claim 4, wherein the four groups of rectangular grooves (110) are fixedly provided with electronic level gauges (120) on the inner walls, and transparent protection plates are fixedly arranged at the ends of the rectangular grooves (110).
6. The agricultural unmanned aerial vehicle suitable for landing on multiple terrains according to claim 1, wherein a second gear (211) is fixedly mounted on the outer wall of the inner side of the top of the outer support rod (210), the servo motors (140) are fixedly mounted on the inner walls of the four landing gear retraction slots (130), a first gear (141) is fixedly mounted on the outer wall of an output shaft of each servo motor (140), and the first gear (141) is meshed with the second gear (211).
7. The agricultural unmanned aerial vehicle suitable for multi-terrain landing according to claim 1, wherein roller frames (280) are fixedly mounted at the bottom ends of the four groups of inner supporting rods (260), and rotating shafts (310) are rotatably connected between the inner walls of the left side and the inner walls of the roller frames (280) through bearings.
8. The agricultural unmanned aerial vehicle suitable for multi-terrain landing of claim 7, wherein the outer wall of the second rotating shaft (310) is fixedly provided with a full-disc motor (320), and the outer wall of the full-disc motor (320) is fixedly provided with rollers (330).
9. The agricultural unmanned aerial vehicle suitable for landing on multiple terrains according to claim 8, wherein the outer wall of the roller (330) is fixedly provided with a non-slip mat (340), the outer wall of the non-slip mat (340) is uniformly distributed with three-dimensional non-slip lines, and the three-dimensional non-slip lines are circular.
10. The agricultural unmanned aerial vehicle suitable for multi-terrain landing according to claim 9, wherein two groups of the scrapers (350) are symmetrically arranged in front and back of the scraper (350) and the included angle between the two groups of the scrapers (350) and the tangent line of the roller (330) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634663.5A CN114104273A (en) | 2021-12-29 | 2021-12-29 | Agricultural unmanned aerial vehicle suitable for descending on multiple terrains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634663.5A CN114104273A (en) | 2021-12-29 | 2021-12-29 | Agricultural unmanned aerial vehicle suitable for descending on multiple terrains |
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| Publication Number | Publication Date |
|---|---|
| CN114104273A true CN114104273A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111634663.5A Pending CN114104273A (en) | 2021-12-29 | 2021-12-29 | Agricultural unmanned aerial vehicle suitable for descending on multiple terrains |
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| Country | Link |
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| CN (1) | CN114104273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416844A (en) * | 2022-09-28 | 2022-12-02 | 张春宝 | Unmanned aerial vehicle undercarriage based on agricultural monitoring automatic cleaning landing site |
-
2021
- 2021-12-29 CN CN202111634663.5A patent/CN114104273A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416844A (en) * | 2022-09-28 | 2022-12-02 | 张春宝 | Unmanned aerial vehicle undercarriage based on agricultural monitoring automatic cleaning landing site |
| CN115416844B (en) * | 2022-09-28 | 2023-09-26 | 张春宝 | Unmanned aerial vehicle undercarriage based on agricultural monitoring automatically cleans landing site |
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