CN112429234A - Plant protection unmanned aerial vehicle that farming used - Google Patents

Plant protection unmanned aerial vehicle that farming used Download PDF

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Publication number
CN112429234A
CN112429234A CN202011445959.8A CN202011445959A CN112429234A CN 112429234 A CN112429234 A CN 112429234A CN 202011445959 A CN202011445959 A CN 202011445959A CN 112429234 A CN112429234 A CN 112429234A
Authority
CN
China
Prior art keywords
aerial vehicle
unmanned aerial
plant protection
base
agricultural planting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011445959.8A
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Chinese (zh)
Inventor
肖子涵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaibei Dace Carp Biotechnology Co ltd
Original Assignee
Huaibei Dace Carp Biotechnology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huaibei Dace Carp Biotechnology Co ltd filed Critical Huaibei Dace Carp Biotechnology Co ltd
Priority to CN202011445959.8A priority Critical patent/CN112429234A/en
Publication of CN112429234A publication Critical patent/CN112429234A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C39/00Aircraft not otherwise provided for
    • B64C39/02Aircraft not otherwise provided for characterised by special use
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C25/00Alighting gear
    • B64C25/32Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/58Arrangements or adaptations of shock-absorbers or springs
    • B64C25/62Spring shock-absorbers; Springs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C25/00Alighting gear
    • B64C25/32Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/58Arrangements or adaptations of shock-absorbers or springs
    • B64C25/62Spring shock-absorbers; Springs
    • B64C25/64Spring shock-absorbers; Springs using rubber or like elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64UUNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00UAVs specially adapted for particular uses or applications

Abstract

The invention belongs to the technical field of agricultural planting, and particularly relates to a plant protection unmanned aerial vehicle for agricultural planting, which aims at solving the problem of poor damping effect of the existing unmanned aerial vehicle. According to the invention, when the plant protection unmanned aerial vehicle falls to the ground, the base can be extruded and deformed, air in the base is discharged from the first air holes and the second air holes, the air in the base is compressed while the damping effect can be achieved, and the base further damps in the exhaust process.

Description

Plant protection unmanned aerial vehicle that farming used
Technical Field
The invention relates to the technical field of agricultural planting, in particular to a plant protection unmanned aerial vehicle for agricultural planting.
Background
With the development of the agricultural planting technology advanced by scientific technology, the traditional agricultural cultivation mode has been gradually replaced by a mechanized planting mode, and the large-scale mechanized agricultural cultivation mode has become a necessary development trend, wherein in order to ensure the normal yield of crops in different stages of the growth of the crops, the crops need to be sprayed with pesticides to prevent and control diseases and pests and carry out weeding operation.
Wherein, can use plant protection unmanned aerial vehicle to carry out large-scale medicine to crops and spray, at the in-process that plant protection unmanned aerial vehicle descends, plant protection unmanned aerial vehicle's base support can collide with ground, and the effort that the collision produced can produce the shock loss to plant protection unmanned aerial vehicle, generally with spring mounting in base support among the prior art, carry out the shock attenuation, but near spring-loaded not enough in effect, consequently, make corresponding improvement to this problem.
Disclosure of Invention
Based on the technical problem that the existing unmanned aerial vehicle is poor in damping effect, the invention provides a plant protection unmanned aerial vehicle for agricultural planting.
The invention provides a plant protection unmanned aerial vehicle for agricultural planting, which comprises an unmanned stand, wherein a plurality of propellers are arranged on the unmanned stand, a plurality of first support rods are symmetrically fixed at two ends of the bottom of the unmanned stand through bolts, a second support rod is arranged at the bottom of the first support rod, an embedded groove is formed in the top of the second support rod, a damping spring is fixed at the bottom of the inner wall of the embedded groove through bolts, the damping spring is fixedly connected with the first support rod through bolts, the second branch becomes the splayed and distributes, and there is the fixed block second branch bottom through the bolt fastening, and the fixed block bottom bonds has the base, and the base is made by rubber materials, and the base sets to the hemisphere, and the base bottom is run through and is seted up a plurality of second bleeder vents, and the first bleeder vent that sets up a plurality of annular array and distribute is run through to base circumference outer wall, and first bleeder vent sets up in second bleeder vent top, and the aperture of first bleeder vent is greater than the second bleeder vent.
Preferably, the second air hole is provided with an opening part and a material blocking part, the opening part is of a flaring structure, the cross section of the material blocking part is of an S shape, and the aperture of the material blocking part is gradually reduced towards one side of the opening part.
Preferably, the top of the inner wall of the first ventilation hole is rotatably connected with a sealing piece through a bearing, and the same first spring is fixed between the inner side of the sealing piece and the inner wall of the first ventilation hole through a bolt.
Preferably, a sealing groove is formed in the bottom of the inner wall of the first ventilation hole, a sealing block is arranged at the bottom of the sealing piece, and the sealing block is abutted to the inner wall of the sealing groove.
Preferably, the sealing groove is provided with an inclined portion.
Preferably, the sealing piece is provided with a groove on the inner side, a plurality of groups of sliding grooves are formed in the inner wall of each groove, sliding blocks are connected in the sliding grooves in a sliding mode, the front ends of the sliding blocks are fixedly provided with inserting rods through bolts, the inserting rods are sleeved and are connected with variable resistance plates in a rotating mode through bearings, and the two variable resistance plates in the same group are connected through hinges in a rotating mode.
Preferably, the same second spring is fixed between the sliding block and the inner wall of the sliding groove through a bolt.
Preferably, the inner side surface of the resistance-changing plate is provided with a plurality of resistance-changing grooves, and the cross sections of the resistance-changing grooves are S-shaped.
Compared with the prior art, the invention provides a plant protection unmanned aerial vehicle for agricultural planting, which has the following beneficial effects:
1. the plant protection unmanned aerial vehicle for agricultural planting is characterized in that the base is arranged, when the plant protection unmanned aerial vehicle falls to the ground, the base can be extruded and deformed, air in the base is discharged from the first air hole and the second air hole, the base is made of elastic rubber materials, the base can achieve a damping effect and can be compressed, the base further damps in the exhaust process, then the base can perform elastic reset motion, the second air hole inhales air at the moment, suction force is generated on the ground during the inhaling air, the action of a damping spring is matched, the shock loss to a machine body when the plant protection unmanned aerial vehicle descends is reduced, the first air hole is further formed above the second air hole, the aperture of the first air hole is larger than that of the second air hole, the air can be exhausted and inhaled in the horizontal direction from the first air hole, and vertical recoil force is avoided, make the second bleeder vent hold ground better to further improve the shock attenuation effect, the base sets to the hemisphere, can be when plant protection unmanned aerial vehicle slope falls to the ground, the homoenergetic plays good shock attenuation and support effect.
2. This plant protection unmanned aerial vehicle that farming used, through setting up opening portion and hindering material portion, opening the oral area and setting to the flaring structure, hinder material portion cross-section and set to the S-shaped, and the aperture that hinders material portion sets to opening one side and diminishes towards opening one side, can be so that when exhausting, more gas can be discharged from first bleeder vent to further make the second bleeder vent hold ground better, thereby further improve the shock attenuation effect, and hinder material portion can prevent that the dust granule from getting into inside the base.
3. This plant protection unmanned aerial vehicle that farming used, through setting up the gasket, when exhausting, gas can push the gasket open, normally exhaust, when breathing in, under the effect of first spring, the gasket seals first bleeder vent, only breathe in through the second bleeder vent, thereby make the second bleeder vent hold ground better, further improve the shock attenuation effect, sealed piece and seal groove laminating contact, can improve sealed effect, when the dust granule enters, accept through the seal groove, utilize the slope to discharge the dust granule.
4. The plant protection unmanned aerial vehicle for agricultural planting is characterized in that variable resistance plates are arranged, a plurality of groups of variable resistance plates form saw-toothed shapes, the roughness of the surface of a sealing sheet can be effectively increased, so that the resistance of the sealing sheet to air flow during air exhaust is increased, the rotating angle of the sealing sheet is larger, the air exhaust is faster, the damping effect of a base is further enhanced, meanwhile, the variable resistance plates slide in sliding grooves along sliding blocks, the variable resistance plates rotate simultaneously, a plurality of variable resistance plates extend and unfold along the direction of the sliding grooves, the integral stress area is further increased, the blocking effect on the air flow is improved, the rotating angle of the sealing sheet is further increased, the damping effect of the base is promoted, a variable resistance groove is further arranged, the cross section of the variable resistance groove is S-shaped, and the surface roughness of the variable resistance plates at any position can be further improved, thereby maintaining the blocking effect on the exhaust air flow and promoting the damping effect of the base.
Drawings
Fig. 1 is a schematic overall structure diagram of a plant protection unmanned aerial vehicle for agricultural planting according to the present invention;
fig. 2 is a schematic view of the internal structure of a base of a plant protection unmanned aerial vehicle for agricultural planting according to the present invention;
fig. 3 is a schematic view of an internal structure of a base of a plant protection unmanned aerial vehicle for agricultural planting according to embodiment 2 of the present invention;
fig. 4 is an enlarged schematic view of a structure a of a plant protection unmanned aerial vehicle for agricultural planting according to embodiment 3 of the present invention;
fig. 5 is an enlarged schematic view of a structure B of a plant protection unmanned aerial vehicle for agricultural planting according to embodiment 4 of the present invention.
In the figure: the device comprises an unmanned stand 1, a first support rod 2, a second support rod 3, a fixed block 4, a base 5, a first air hole 6, a second air hole 7, an opening part 8, a material blocking part 9, a sealing piece 10, a first spring 11, a sealing groove 12, an inclined part 13, a sealing block 14, a groove 15, a sliding groove 16, a sliding block 17, an inserted rod 18, a second spring 19, a resistance changing plate 20 and a resistance changing groove 21.
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. 1-2, a plant protection unmanned aerial vehicle for agricultural planting comprises an unmanned frame 1, wherein a plurality of propellers are arranged on the unmanned frame 1, a plurality of first support rods 2 are symmetrically fixed at two ends of the bottom of the unmanned frame 1 through bolts, second support rods 3 are arranged at the bottoms of the first support rods 2, embedded grooves are formed in the tops of the second support rods 3, damping springs are fixed at the bottoms of the inner walls of the embedded grooves through bolts, the damping springs are fixedly connected with the first support rods 2 through bolts, the second support rods 3 are distributed in a splayed shape, fixing blocks 4 are fixed at the bottoms of the second support rods 3 through bolts, a base 5 is bonded at the bottoms of the fixing blocks 4, the base 5 is made of rubber materials, the base 5 is arranged in a hemispherical shape, a plurality of second vent holes 7 are formed in the bottom of the base 5 in a penetrating manner, a plurality of first vent holes 6 distributed in an annular array are formed in the circumferential outer wall of, and the aperture of the first air hole 6 is larger than that of the second air hole 7.
When in use, when the plant protection unmanned aerial vehicle falls to the ground, the base 5 can be extruded and deformed, the air in the base 5 is discharged from the first air hole 6 and the second air hole 7, the base 5 is made of elastic rubber material, the air in the base 5 is compressed when the base can achieve the damping effect, the base 5 further damps the air in the exhaust process, then, the base 5 can perform elastic reset motion, the second air hole 7 inhales air at the moment, the ground generates suction force during the inhaling air, the action of a damping spring is matched, the shock loss to the machine body when the plant protection unmanned aerial vehicle descends is reduced, furthermore, the first air hole 6 is arranged above the second air hole 7, the aperture of the first air hole 6 is larger than that of the second air hole 7, the air can be exhausted and inhaled from the first air hole 6 in the horizontal direction, and the vertical recoil force is avoided to be generated, make second bleeder vent 7 hold ground better to further improve the shock attenuation effect, base 5 sets to the hemisphere, can be when plant protection unmanned aerial vehicle slope falls to the ground, and the homoenergetic plays good shock attenuation and support effect.
Example 2
Referring to fig. 1 and 3, a plant protection unmanned aerial vehicle for farming is provided with flaring portion 8 and material blocking portion 9 on second bleeder vent 7, flaring portion 8 sets to the flaring structure, material blocking portion 9 cross-section sets to the S-shaped, and the aperture that material blocking portion 9 set to be gradually littleer towards flaring portion 8 one side.
During the use, can be so that when exhausting, more gas can be followed first bleeder vent 6 and discharged to further make second bleeder vent 7 suck ground better, thereby further improve the shock attenuation effect, and hinder material portion 9 and can prevent that the dust granule from entering into inside base 5.
Example 3
Referring to fig. 1 and 3-4, a plant protection unmanned aerial vehicle that farming used, the bearing rotation is connected with gasket 10 at 6 inner wall tops of first bleeder vent, is fixed with same first spring 11 through the bolt between gasket 10 inboard and the 6 inner walls of first bleeder vent, can prevent that 1 st bleeder vent 6 from breathing in, further makes second bleeder vent 7 better hold ground.
In the invention, the bottom of the inner wall of the first air hole 6 is provided with a sealing groove 12, the bottom of the sealing sheet 10 is provided with a sealing block 14, and the sealing block 14 is abutted with the inner wall of the sealing groove 12, so that the sealing effect on the first air hole 6 during air suction can be increased;
in the present invention, the sealing groove 12 is provided with the inclined portion 13 to facilitate the discharge of dust particles.
During the use, when exhausting, gas can push the gasket 10 open, normally exhaust, when breathing in, under the effect of first spring 11, gasket 10 seals first bleeder vent 6, only breathe in through second bleeder vent 7, thereby make second bleeder vent 7 suck ground better, further improve the shock attenuation effect, sealing block 14 and the contact of 12 laminatings of seal groove, can improve sealed effect, when the dust granule enters, accept through seal groove 12, utilize rake 13 to discharge the dust granule.
Example 4
Referring to fig. 1-and 3-5, a plant protection unmanned aerial vehicle that farming used, gasket 10 inboard has seted up recess 15, and recess 15 inner wall has seted up multiunit spout 16, and sliding connection has slider 17 in the spout 16, and the slider 17 front end has inserted bar 18 through the bolt fastening, and the cover is established and is connected with through bearing rotation on the inserted bar 18 and becomes resistance plate 20, and two that become the resistance plate 20 of same group are connected through hinge rotation, can effectively improve the atress effect.
In the invention, the same second spring 19 is fixed between the sliding block 17 and the inner wall of the sliding groove 16 through bolts, so that the variable resistance plate 20 can be more flexibly extended.
In the invention, the inner side surface of the varistor plate 20 is provided with a plurality of varistor grooves 21, and the sections of the varistor grooves 21 are S-shaped, so that the stress effect can be effectively improved.
When the air-cooling fan is used, the multiple groups of variable resistance plates 20 form saw-toothed shapes, the roughness of the surface of the sealing sheet 10 can be effectively increased, so that the resistance of the sealing sheet 10 to air flow during air exhaust is increased, the rotating angle of the sealing sheet 10 is larger, so that the air exhaust is faster, the damping effect of the base 5 is further enhanced, meanwhile, the variable resistance plates 20 slide in the sliding grooves 16 along the sliding blocks 17, the variable resistance plates 20 rotate simultaneously, so that the variable resistance plates 20 extend and unfold along the direction of the sliding grooves 16, the integral stressed area is further increased, the blocking effect on the air flow is improved, the rotating angle of the sealing sheet 10 is further increased, the damping effect of the base 5 is promoted, the variable resistance grooves 21 are further arranged, the cross sections of the variable resistance grooves 21 are arranged in an S shape, the surface roughness of the variable resistance plates 20 at any position can be further improved, thereby maintaining the effect of blocking the exhaust air flow and promoting the shock-absorbing effect of the base 5.
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 (8)

1. A plant protection unmanned aerial vehicle for agricultural planting comprises an unmanned rack (1), wherein a plurality of propellers are arranged on the unmanned rack (1), a plurality of first supporting rods (2) are symmetrically fixed at two ends of the bottom of the unmanned rack (1) through bolts, second supporting rods (3) are arranged at the bottoms of the first supporting rods (2), an embedded groove is formed in the top of each second supporting rod (3), a damping spring is fixed at the bottom of the inner wall of the embedded groove through a bolt, the damping spring is fixedly connected with the first supporting rods (2) through bolts, the plant protection unmanned aerial vehicle is characterized in that the second supporting rods (3) are distributed in a splayed shape, a fixing block (4) is fixed at the bottom of each second supporting rod (3) through a bolt, a base (5) is bonded at the bottom of the fixing block (4), the base (5) is made of a rubber material, the base (5) is arranged in a hemispherical shape, a plurality of second air holes (7, the outer wall of the circumference of the base (5) is provided with a plurality of first air holes (6) distributed in an annular array in a penetrating way, the first air holes (6) are arranged above the second air holes (7), and the aperture of the first air holes (6) is larger than that of the second air holes (7).
2. The unmanned aerial vehicle for plant protection of agricultural planting according to claim 1, wherein the second vent hole (7) is provided with an open mouth portion (8) and a material blocking portion (9), the open mouth portion (8) is arranged in a flaring structure, the cross section of the material blocking portion (9) is arranged in an S shape, and the aperture of the material blocking portion (9) is arranged to be gradually smaller towards one side of the open mouth portion (8).
3. The plant protection unmanned aerial vehicle that agricultural planting used according to claim 1, characterized in that, the gasket (10) is connected with through the bearing rotation in first bleeder vent (6) inner wall top, has the same first spring (11) through the bolt fastening between gasket (10) inboard and first bleeder vent (6) inner wall.
4. The unmanned aerial vehicle for plant protection of agricultural planting according to claim 3, wherein the bottom of the inner wall of the first air hole (6) is provided with a sealing groove (12), the bottom of the sealing piece (10) is provided with a sealing block (14), and the sealing block (14) is abutted against the inner wall of the sealing groove (12).
5. A plant protection unmanned aerial vehicle for agricultural planting according to claim 4, wherein the sealing groove (12) is provided with an inclined portion (13).
6. The plant protection unmanned aerial vehicle that agricultural planting used according to claim 3, characterized in that, the sealing fin (10) inboard has seted up recess (15), and recess (15) inner wall has seted up multiunit spout (16), and sliding connection has slider (17) in spout (16), and slider (17) front end is fixed with inserted bar (18) through the bolt, and the cover is established and is connected with through the bearing rotation on inserted bar (18) and becomes resistance plate (20), through hinge rotation connection between two resistance plate (20) of becoming of same group.
7. The plant protection unmanned aerial vehicle that agricultural planting used according to claim 6, characterized in that, there is the same second spring (19) through the bolt fastening between slider (17) and spout (16) inner wall.
8. The unmanned aerial vehicle for plant protection of agricultural planting according to claim 6 or 7, wherein the variable resistance plate (20) is provided with a plurality of variable resistance grooves (21) on an inner side surface, and the sections of the variable resistance grooves (21) are S-shaped.
CN202011445959.8A 2020-12-09 2020-12-09 Plant protection unmanned aerial vehicle that farming used Withdrawn CN112429234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011445959.8A CN112429234A (en) 2020-12-09 2020-12-09 Plant protection unmanned aerial vehicle that farming used

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011445959.8A CN112429234A (en) 2020-12-09 2020-12-09 Plant protection unmanned aerial vehicle that farming used

Publications (1)

Publication Number Publication Date
CN112429234A true CN112429234A (en) 2021-03-02

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CN202011445959.8A Withdrawn CN112429234A (en) 2020-12-09 2020-12-09 Plant protection unmanned aerial vehicle that farming used

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CN (1) CN112429234A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204722634U (en) * 2015-04-14 2015-10-28 台州旗峰环保材料有限公司 resting chair
CN205273840U (en) * 2015-11-30 2016-06-01 湖北易瓦特科技股份有限公司 Damper mechanism
CN107873682A (en) * 2017-11-12 2018-04-06 刘福珍 The unmanned spraying machine of agricultural
CN108521775A (en) * 2017-08-28 2018-09-11 深圳市大疆创新科技有限公司 Damping device and head assembly, unmanned plane with the damping device
CN207889981U (en) * 2018-03-07 2018-09-21 石家庄冀航农业科技有限公司 A kind of water proof type, which is sprayed insecticide, uses unmanned plane
US20180352170A1 (en) * 2016-01-26 2018-12-06 SZ DJI Technology Co., Ltd. Unmanned aerial vehicle and multi-ocular imaging system
CN209988111U (en) * 2019-05-31 2020-01-24 江苏天频植保科技有限公司 Plant protection unmanned aerial vehicle shock attenuation foot rest
CN110901922A (en) * 2019-12-06 2020-03-24 湖南浩天翼航空技术有限公司 Plant protection unmanned aerial vehicle of multiplicable heavy burden
CN210235315U (en) * 2019-06-28 2020-04-03 陕西嘉创飞航无人机科技有限公司 Unmanned aerial vehicle shock attenuation fixture
CN111268137A (en) * 2020-03-04 2020-06-12 南京绿源达农业设备有限公司 A plant protection unmanned aerial vehicle for agricultural
CN211281456U (en) * 2019-08-27 2020-08-18 江苏龙顺米业有限公司 Agricultural plant protection unmanned aerial vehicle with landing damping device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204722634U (en) * 2015-04-14 2015-10-28 台州旗峰环保材料有限公司 resting chair
CN205273840U (en) * 2015-11-30 2016-06-01 湖北易瓦特科技股份有限公司 Damper mechanism
US20180352170A1 (en) * 2016-01-26 2018-12-06 SZ DJI Technology Co., Ltd. Unmanned aerial vehicle and multi-ocular imaging system
CN108521775A (en) * 2017-08-28 2018-09-11 深圳市大疆创新科技有限公司 Damping device and head assembly, unmanned plane with the damping device
CN107873682A (en) * 2017-11-12 2018-04-06 刘福珍 The unmanned spraying machine of agricultural
CN207889981U (en) * 2018-03-07 2018-09-21 石家庄冀航农业科技有限公司 A kind of water proof type, which is sprayed insecticide, uses unmanned plane
CN209988111U (en) * 2019-05-31 2020-01-24 江苏天频植保科技有限公司 Plant protection unmanned aerial vehicle shock attenuation foot rest
CN210235315U (en) * 2019-06-28 2020-04-03 陕西嘉创飞航无人机科技有限公司 Unmanned aerial vehicle shock attenuation fixture
CN211281456U (en) * 2019-08-27 2020-08-18 江苏龙顺米业有限公司 Agricultural plant protection unmanned aerial vehicle with landing damping device
CN110901922A (en) * 2019-12-06 2020-03-24 湖南浩天翼航空技术有限公司 Plant protection unmanned aerial vehicle of multiplicable heavy burden
CN111268137A (en) * 2020-03-04 2020-06-12 南京绿源达农业设备有限公司 A plant protection unmanned aerial vehicle for agricultural

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Application publication date: 20210302

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