CN210503179U

CN210503179U - Plant protection unmanned aerial vehicle with stable flight focus

Info

Publication number: CN210503179U
Application number: CN201921634899.7U
Authority: CN
Inventors: 魏建东; 哲理
Original assignee: Tongliao Shenying Aircraft Manufacturing Co ltd
Current assignee: Inner Mongolia Shenying Aircraft Manufacturing Co.,Ltd.
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-12
Anticipated expiration: 2029-09-29

Abstract

The utility model belongs to the technical field of general aircraft agricultural is used, specifically be a plant protection unmanned aerial vehicle with stable flight focus. Conventional unmanned aerial vehicle can't adjust flight control, flight gesture in a flexible way because of self structural reason, can not adapt to the flight of special weather, special operation demand, and the operation effect is not good enough. The utility model is provided with a suspender between the spiral arm and the body, the suspender is provided with a protective cover, and the protective cover comprises a connecting part and a frame part; the frame part comprises support rods and ring rods, a plurality of support rods are longitudinally arranged between the ring rods, and two symmetrical folded plates are arranged on the support rods. The utility model discloses a jib makes unmanned aerial vehicle's whole focus sink with unmanned aerial vehicle's rotor part and unmanned aerial vehicle's fuselage, and plant the operation portion (including box etc.) phase separation of guarantor usefulness for unmanned aerial vehicle flight stability promotes greatly when the operation, can also be in the air current sudden change, or when unmanned aerial vehicle receives the proruption situation such as hitting to scratch and takes place, unmanned aerial vehicle still steadily flies.

Description

Plant protection unmanned aerial vehicle with stable flight focus

Technical Field

The utility model belongs to the technical field of general aircraft agricultural is used, specifically be a plant protection unmanned aerial vehicle with stable flight focus.

Background

Plant protection unmanned aerial vehicle, also called unmanned vehicles, as the name implies is the unmanned aircraft who is used for agriculture and forestry plant protection operation, and this type unmanned aircraft comprises flight platform (fixed wing, helicopter, multiaxis aircraft), navigation flight control, spraying mechanism triplex, flies through ground remote control or navigation and controls, realizes spraying the operation, can spray medicament, seed, powder etc..

As a big agricultural country, China needs a large amount of agricultural plant protection operation every year in 18 hundred million mu of basic farmlands, and the number of people suffering from pesticide poisoning in China is 10 ten thousand every year, and the fatality rate is about 20%. The number of the fatalities caused by pesticide residues and pollution has no official statistics so far, and is supposed to be a striking number. Plant protection unmanned aerial vehicle service agriculture is rapidly developed in developed countries such as japan and the usa. In 1990, the first unmanned aerial vehicle in the world was introduced by Nippon mountain leaf company, mainly for spraying pesticides. The method is firstly applied to pesticide spraying in rice planting areas in south China. In 2016, agricultural plant protection unmanned aerial vehicles gradually became a new favorite in the industry, and cases of using unmanned aerial vehicles for plant protection continuously appear in various places. According to the latest statistics of Ministry of agriculture, as soon as 2016, 6 and 5 days, more than 300 companies producing professional-grade unmanned aerial vehicles exist in China, more than 200 of the companies are plant protection unmanned aerial vehicle manufacturers, 178 varieties of various plant protection unmanned aerial vehicles are produced, and the reserve capacity exceeds 5000.

The remote control agricultural pesticide spraying small airplane is small in size and strong in function, can load 8-10 kilograms of pesticides, sprays pesticides at low altitude, can finish operation of one mu of land per minute, and has spraying efficiency 30 times that of the traditional manual method. This aircraft adopts intelligence to control, and the operation hand passes through ground remote controller and GPS location and implements control to it, and the downdraft that its rotor produced helps increasing the penetrability of fog flow to the crop, and control effect is good, and remote control pesticide application has improved the security that the pesticide sprayed greatly simultaneously. Remote control operation is carried out, the spraying operation personnel avoid the danger of exposure to pesticide, and the safety of the spraying operation is improved. In addition, the spraying mode adopted by the spraying technology of the electric unmanned helicopter can save the pesticide usage by at least 50 percent and the water usage by 90 percent, thereby greatly reducing the resource cost. Compared with oil power, the electric unmanned aerial vehicle has the advantages of small overall size, light weight, lower depreciation rate, low labor cost of unit operation and easiness in maintenance.

An Unmanned Aerial Vehicle (UAV) is an unmanned aerial vehicle operated by a radio remote control device and a self-contained program control device. Unmanned aerial vehicles are in fact a general term for unmanned aerial vehicles, and can be defined from a technical perspective as follows: unmanned fixed wing aircraft, unmanned VTOL aircraft, unmanned airship, unmanned helicopter, unmanned multi-rotor aircraft, unmanned paravane, etc. Compared with manned aircraft, it has the advantages of small volume, low cost, convenient use, low requirement on the operational environment, strong battlefield viability and the like. Since the unmanned aircraft has important significance for future air battles, the research and development work of the unmanned aircraft is carried out in all major military countries in the world. In 11 months in 2013, the civil aviation administration (CA) in china issued the temporary regulations on the management of drivers of civil unmanned aircraft systems, and the AOPA association in china was responsible for the relevant management of civil unmanned aircraft. According to the stipulations, the operation of the unmanned aerial vehicle in China can be divided into 11 conditions according to the size of the unmanned aerial vehicle and the flight airspace, wherein only unmanned aerial vehicles above 116 kg and airship above 4600 cubic meters are managed by the civil aviation administration when flying in a fusion airspace, and other conditions, including other flights including increasingly popular miniature aerial vehicles, are managed by industry associations or are automatically responsible by operators.

An unmanned multi-rotor aircraft, also known as a multi-rotor drone, is a special unmanned helicopter with three and more rotor shafts. It is rotated by a motor on each shaft, driving the rotor, thereby generating lift. The collective pitch of the rotors is fixed and not variable as in a typical helicopter. Through changing the relative speed between the different rotors, the size of unipolar propulsive force can be changed to the orbit of control aircraft. The drone system comprises a system of drone flight platforms, associated remote control stations, required command and control data links, and any other components of approved model design specifications. Many rotor unmanned aerial vehicle nature controlled is strong, but VTOL and hover, mainly be applicable to low latitude, low-speed, have the task type of VTOL and hover requirement.

Agricultural plant protection unmanned aerial vehicle when sowing, spouting operations such as medicine, need be according to factors such as operation demand, operation environment and weather, nimble adjustment unmanned aerial vehicle's flight control, flight gesture to guarantee or strengthen operation effect and efficiency, but conventional unmanned aerial vehicle is because of the structure reason itself, can not adapt to the flight of special weather, special operation demand, and the operation effect is not good enough.

Disclosure of Invention

The utility model aims to provide a: the plant protection unmanned aerial vehicle of flight gesture that develops one kind can remain stable, and it has the focus of stable flight, can stably fly, and can be used for special operation demand.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a plant protection unmanned aerial vehicle with stabilize flight focus, this unmanned aerial vehicle includes fuselage, foot rest, spiral arm, rotor, wherein:

the fuselage comprises components such as unmanned aerial vehicle control including but not limited to navigation flight control, communication, power supply, signals, sensors and the like;

the rotary arms are connected to the machine body, the outer end of each rotary arm is provided with a rotor shaft, and a rotor is arranged on each rotor shaft;

the method is characterized in that:

a hanging rod is arranged between the spiral arm and the machine body, the hanging rod is perpendicular to the horizontal plane where the machine body is located and extends upwards, the lower end of the hanging rod is connected to the machine body, and the upper end of the hanging rod is connected with the spiral arm; the suspension rod is vertical to the horizontal plane of the spiral arm;

the length of the hanging rod is greater than that of the spiral arm;

the bottom of the machine body is provided with an operation part which is used for plant protection operation, and the operation content comprises but is not limited to seeding and spraying;

the operation part is provided with a box body structure, a mounting structure is arranged between the box body and the machine body, and the box body and the machine body are assembled and connected through the mounting structure;

the mounting structure comprises but is not limited to a buckling mechanism, a bolt mechanism and a hook mechanism;

the foot rest is installed in the bottom of operation portion box for support unmanned aerial vehicle.

The top end of the suspender is provided with a connecting disc, and the spiral arm is hinged on the connecting disc in a star shape;

the radial arm is folded downwards.

The suspension rod is provided with a protective cover which comprises a connecting part and a frame part;

the connecting part is cylindrical and is sleeved outside the suspender;

the frame part is umbrella-shaped and is buckled outside the machine body and the operation part;

the top of the frame part gathers towards the middle, and finally extends to the outer wall of the connecting part to be fixedly connected with the connecting part;

the bottom of the frame portion extends downward.

Adopt detachable assembly structure between protection casing and the jib, this detachable assembly structure sets up on protection casing or jib.

And a buckle type detachable assembly structure is adopted between the hanging rod and the connecting disc or between the hanging rod and the machine body.

The protective cover adopts a split structure, and is separated from the suspender after being disassembled;

the split structures of the protective cover are combined and connected by adopting buckles and/or bolts.

The frame part of the protective cover comprises a plurality of support rods and ring rods, and the support rods are inclined outwards to enable the frame part to be in a conical shape with a narrow top and a wide bottom; the two ring rods are annular and are respectively arranged at the middle upper part and the middle lower part of the stay bar;

a plurality of support rods are longitudinally arranged between the ring rods, and two ends of each support rod are respectively fixed on the upper ring rod and the lower ring rod;

the protective cover is characterized in that two symmetrical folded plates are arranged on the supporting rod and hinged to the supporting rod, the folded plates are folded towards the inner direction of the protective cover, a partition plate is arranged in a included angle formed by folding the two folded plates, the partition plate is connected to the supporting rod, and the partition plate is used for limiting the folding degree of the two folded plates and enabling the two folded plates to have a certain included angle.

The two ends of the folded plate are provided with bulges which protrude out of the ring rod and are used for limiting the unfolding degree of the folded plate.

The ring rod is parallel and level with the upper edge and the lower edge of the box body of the operation part or exceeds the upper edge and the lower edge of the box body, the ring rod positioned on the upper part is parallel and level with the upper edge of the box body or exceeds the upper edge upwards, and the ring rod positioned on the lower part is parallel and level with the lower edge of the box body or exceeds the lower edge downwards.

The protective cover slides up and down along the suspender, and the bottom end of the suspender is provided with a buckle matched with the connecting part of the protective cover, and the buckle limits the protective cover at the bottom of the suspender;

the top end of the suspender is provided with a spring which is used for buffering the impact of the protective cover on the connecting disc at the top of the suspender.

The machine body is provided with a gravity sensor, a buckle at the bottom end of the suspender is provided with a motor and a motor controller, and the motor is used for controlling the buckle to open and close;

the gravity sensor and the motor controller are electrically connected with a control system of the unmanned aerial vehicle and are handed over to a navigation flight control system of the unmanned aerial vehicle for control and operation.

The protective cover is in an inverted hemispherical shape.

The utility model has the advantages that:

1) the rotary wing part of the unmanned aerial vehicle is separated from the body of the unmanned aerial vehicle and an operation part (comprising a box body and the like) for plant protection by adopting the suspender, so that the whole gravity center of the unmanned aerial vehicle sinks, namely, a lifting force action point generated by the rotary wing is at the top end of the suspender, the gravity center of the body and the like (or the whole gravity center of the unmanned aerial vehicle can be considered) is at the bottom of the suspender, a gravity action point sinks, and the lifting force action point is separated from the gravity action point; the length of the suspender is greater than that of the rotary arm of the rotor wing, so that when the unmanned aerial vehicle is adjusted to move forwards and turn, a larger gravity moment needs to be overcome, and/or the unmanned aerial vehicle can integrally move through swinging of the suspender, so that the flight stability of the unmanned aerial vehicle during operation is greatly improved, and the unmanned aerial vehicle can still stably fly when sudden changes of airflow or sudden situations such as collision, scratch and the like of the unmanned aerial vehicle occur;

2) after the stability of the unmanned aerial vehicle is improved, the specification of a rotor wing can be increased, the lift force is improved, so that the load capacity can be increased, the single-time operation efficiency is greatly improved, and the operation cost is reduced;

3) for avoiding the sudden failure to lead to the unable safe landing of unmanned aerial vehicle, cause the loss of crash, the safety landing that the protection casing can follow two aspects guarantee unmanned aerial vehicle:

firstly, because the gravity center of the unmanned aerial vehicle (and the operation part) is lowered, the operation part is positioned at the lowest position when the unmanned aerial vehicle naturally falls, the rotor wing can be always upward to prevent damage, and meanwhile, the protective cover can completely cover the machine body and the operation part, extends downwards and lifts the operation part; when the unmanned aerial vehicle falls, the protective cover firstly lands on the ground, so that the unmanned aerial vehicle is prevented from impacting the operation part and the machine body; in addition, when the protective cover lands on the ground, the buckle of the connecting part of the protective cover can be damaged by collision, and the protective cover moves upwards to play a certain buffering role; if the impact is serious, after the protective cover is separated from the buckle, the operation part of the unmanned aerial vehicle, namely the box body lands, the box body is generally made of deformable plastics, the buffering effect can be achieved, and the damage to the body of the unmanned aerial vehicle and the larger loss can be avoided;

secondly, the protection casing breaks away from the buckle, slides to jib top after, and the folded plate on the frame part branch can be opened automatically, makes the protection casing form the parachute structure, can slow down unmanned aerial vehicle's the speed of falling, alleviates the striking.

Drawings

The attached drawings are as follows:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of the present invention after the swing arm is folded downward in embodiment 1;

fig. 3 is a schematic structural view of the assembly of the shield and the suspension rod according to embodiment 2 of the present invention;

fig. 4 is a schematic structural view of a protective cover according to embodiment 2 of the present invention;

fig. 5 is a partial schematic structural view of a protective cover frame part according to embodiment 3 of the present invention;

fig. 6 is a schematic structural view of the support bar and the folded plate according to embodiment 3 of the present invention;

fig. 7 is a schematic structural view of a conventional protective cover according to embodiment 4 of the present invention;

fig. 8 is a schematic structural view of a conventional shield according to example 4 of the present invention slid to the top end of a boom;

fig. 9 is a schematic structural view of a hemispherical protection cover according to embodiment 4 of the present invention;

fig. 10 is a schematic structural view of the hemispherical shield according to embodiment 4 of the present invention sliding to the top end of the suspension rod.

Wherein the content of the first and second substances,

1 fuselage 2 spiral arm 3 rotor 4 foot rest 5 box

6 shield 61 attachment portion 62 frame portion 63 brace 64 loop bar 65 strut bar 66 flap 67 tab

7 the boom 71 is connected to the disc.

Detailed Description

[ example 1 ]

As shown in fig. 1, 2, this embodiment a plant protection unmanned aerial vehicle with stable flight focus, this unmanned aerial vehicle includes fuselage, foot rest, spiral arm, rotor, wherein:

the rotary arms are connected to the machine body, the outer end of each rotary arm is provided with a rotor shaft, and a rotor is arranged on each rotor shaft; a navigation system, a control system, a driving system and the like of the unmanned aerial vehicle are all the existing forming technologies and are not described again; it should be particularly noted that conventional unmanned aerial vehicles all have a planar and star-shaped structure, i.e., the body is located at the center, the radial arms are arranged radially from the body to the periphery, and the rotors are mounted at the outer ends of the radial arms; the operation devices mounted on the unmanned aerial vehicle, such as a seeding device, a spraying device and the like, are all assembled at the bottom of the machine body, and the adopted assembly mechanisms also belong to the prior conventional technology and are not described again;

the method is characterized in that:

the length of the hanging rod is greater than that of the spiral arm;

The foot rest is different from conventional foot rests of other plant protection unmanned aerial vehicles, is of a stool or chair leg structure and the like, and is fixedly connected with the machine body to support the machine body and operation components; the foot rest is a supporting leg structure arranged at the bottom of the box body of the operation part and is used for supporting and lifting the box body off the ground so as to prevent operation mechanisms (such as seed metering and discharging, a spray head and the like) at the bottom of the box body from contacting the ground to cause malfunction or damage of the operation mechanisms.

the radial arm is folded downwards. The unmanned aerial vehicle of many rotors of conventionality when the spiral arm has folding function, generally adopts the mode of upwards folding, can upwards erect the rotor, prevents to touch other objects and causes the rotor to damage. This embodiment is in on the basis of jib and connection pad, fold down the spiral arm, can gather together jib middle part (or well lower part) with the rotor, other fixing device, protector are mated again, can effectively avoid fragile rotor to receive the collision and damage. In addition, the design that the spiral arm is folded downwards is also beneficial to improving the assembly firmness between the connecting disc and the spiral arm; when needs use unmanned aerial vehicle, upwards rise the spiral arm to the level, the spiral arm can be restricted to further upwards rotate with the structure of connection pad articulated department by the spiral arm, and the spiral arm can firmly be fixed on the connection pad, and need not consider the spiral arm and upwards fold the fixed problem that arouses.

[ example 2 ]

As shown in fig. 3 and 4, in addition to the above embodiments, the boom of the present embodiment is provided with a shield, which includes a connecting portion and a frame portion;

the connecting part is cylindrical and is sleeved outside the suspender;

the bottom of the frame portion extends downward.

And a buckle type detachable assembly structure is adopted between the hanging rod and the connecting disc or between the hanging rod and the machine body. The snap-in type detachable assembling structure can adopt any conventional technology known in the prior art, and is not described in detail.

the split structures of the protective cover are combined and connected by adopting buckles and/or bolts. The structure of the snap or bolt can adopt any conventional technology known in the prior art, and is not described in detail.

[ example 3 ]

As shown in fig. 5 and 6, on the basis of the above embodiments, the frame portion of the protective hood of this embodiment includes a plurality of support rods and a ring rod, and the support rods are inclined outward, so that the frame portion is tapered with a narrow top and a wide bottom; the two ring rods are annular and are respectively arranged at the middle upper part and the middle lower part of the stay bar;

[ example 4 ]

As shown in fig. 7-10, on the basis of the above embodiments, the protective hood of this embodiment slides up and down along the suspension rod, and a buckle matched with the connecting part of the protective hood is arranged at the bottom end of the suspension rod, and the buckle limits the protective hood at the bottom of the suspension rod;

The protective cover is in an inverted hemispherical shape.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a plant protection unmanned aerial vehicle with stabilize flight focus, this unmanned aerial vehicle includes fuselage, foot rest, spiral arm, rotor, wherein:

the fuselage includes, but is not limited to, unmanned aerial vehicle controls, communications, power supplies, signals, sensor components;

the method is characterized in that:

the length of the hanging rod is greater than that of the spiral arm;

the foot rest is arranged at the bottom of the box body of the operation part and used for supporting the unmanned aerial vehicle;

the radial arm is folded downwards.

2. The plant protection unmanned aerial vehicle with stable flight focus of claim 1, characterized in that:

the connecting part is cylindrical and is sleeved outside the suspender;

the bottom of the frame portion extends downward.

3. The plant protection unmanned aerial vehicle with stable flight focus of claim 2, characterized in that:

4. The plant protection unmanned aerial vehicle with stable flight focus of claim 3, characterized in that:

5. The plant protection unmanned aerial vehicle with stable flight focus of claim 3, characterized in that:

6. A plant protection unmanned aerial vehicle with stable flight focus of any one of claims 2-5, wherein:

7. The plant protection unmanned aerial vehicle with stable flight focus of claim 6, characterized in that:

8. The plant protection unmanned aerial vehicle with stable flight focus of claim 7, characterized in that:

9. A plant protection unmanned aerial vehicle with stable flight focus of claim 7 or 8, characterized in that:

10. The plant protection unmanned aerial vehicle with stable flight focus of claim 9, characterized in that:

the protective cover is in an inverted hemispherical shape.