CN212890946U - Agricultural low-altitude unmanned helicopter - Google Patents

Abstract

The utility model discloses an agricultural low latitude unmanned helicopter, the load simulator comprises a case, the inside of machine case is equipped with battery and radar module, remote control operation module, picture biography module, data acquisition module, and the top and the bottom of machine case are equipped with fixed disk and medical kit respectively, and fixed disk and medical kit respectively with quick-witted case bolted connection. This agricultural low latitude unmanned helicopter, through the medical kit, cooperation between sprinkler and the protector, will apply medicine, the pest control combines together with the reconnaissance, promote the organizational of the unified control of crops plant diseases and insect pests, modernization level, reduce the prevention and cure cost, improve pesticide availability factor, this agricultural low latitude unmanned helicopter compares with the artifical spraying of tradition, it is efficient to have, water conservation economizes on medicine, spray characteristics such as even, the manual work of spraying the pesticide can only be spouted about 1 mu ground every man hour, not only operation intensity of labour is big, and the artifical spraying is more can't do nothing when the operation to high intensive crops.

Description

Agricultural low-altitude unmanned helicopter

Technical Field

The utility model relates to the technical field of agricultural machinery, specifically be an agricultural low latitude unmanned helicopter.

Background

The unmanned helicopter low-altitude spraying pesticide application is a novel technology suitable for the requirements of modern agriculture and modern plant protection, and domestic and foreign practices prove that the unmanned helicopter is used for agricultural plant protection, the technology is mature, the effect is obvious, the province serves as the great province of the agriculture, the unmanned helicopter is introduced and adopted to spray pesticide, the crop pest control can be changed from artificial ground control into unmanned aerial vehicle aerial control, the efficiency and the safety are high, the labor force of farmers is saved, the agricultural input cost is saved, and the economic benefit of the farmers is increased finally, so that the application and the popularization of the technology are a revolution of agricultural machinery and technology, the application and the popularization of the technology have profound significance for accelerating the agriculture and animal husbandry of the province to advance to the high-tech age, meanwhile, the manual spraying is prevented from contacting the pesticide for a long time, the risk of pesticide poisoning of operating personnel is greatly reduced, and aiming at the situations, in order to avoid the technical, there is a real need to provide an agricultural low altitude unmanned helicopter to overcome the above-mentioned drawbacks of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an unmanned helicopter of agricultural low latitude to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an agricultural low-altitude unmanned helicopter comprises a case, wherein a battery and radar module, a remote control operation module, a picture transmission module and a data acquisition module are arranged in the case, a fixed disc and a medicine box are respectively arranged at the top and the bottom of the case, the fixed disc and the medicine box are respectively connected with the case through bolts, the fixed disc is circular, a plurality of support arms are respectively arranged on the circumference of the fixed disc, the inner side ends of the support arms are hinged with the fixed disc, support rods are arranged on the support arms, the number of the support rods is the same as that of the support arms, the support rods are hinged with the support arms, the outer side ends of the support arms are provided with driving motors, the driving motors are connected with the outer ends of the support arms through bolts, the output ends of the driving motors are provided with propellers which are connected with the driving motors through bolts, and locking pins are arranged at the center of the, the locking pin is in threaded connection with the fixed disc, the locking disc is sleeved outside the locking pin and in threaded connection with the locking pin, the locking disc is connected with the supporting arm through a supporting rod, the locking pin penetrates through the fixed disc, the front side and the rear side of the bottom of the case are respectively provided with a frame, the frames are in bolted connection with the case, the front side and the rear side of the medicine chest are respectively provided with a filling port, the left side and the right side of the medicine chest are respectively provided with a protective device, the protective devices are in bolted connection with the medicine chest, output pumps are arranged below the filling ports and are positioned on the front side and the rear side of the medicine chest and are respectively in bolted connection with the medicine chest, the output ends of the two output pumps are respectively sleeved with output three-way knots, the two output three-way knots are respectively connected with output end spigots of the output pumps, the left side and the right side of the output three-way knots are respectively provided, and two be equipped with first bi-directional knot between the main transfer line, and first bi-directional knot and main transfer line activity are pegged graft, and both ends all are equipped with first through knot about the main transfer line, and first through knot is a plurality of, and first through knot is pegged graft with main transfer line and is linked to each other, and is equipped with sprinkler on the first through knot, and sprinkler and first through knot tang are connected, and driving motor, output pump and protector respectively with quick-witted incasement battery and radar module, remote control module, picture pass module, data acquisition module electric connection.

Preferably, sprinkler comprises quadriversal knot, inferior transfer line, second bilateral knot, the straight-through knot of second and atomizing nozzle, and quadriversal knot is connected with first straight-through knot tang, and four inferior transfer line is "cross" and pegs graft on quadriversal knot, and the second bilateral knot is located two between the inferior transfer line, and inferior transfer line and the activity of second bilateral knot peg graft, and atomizing nozzle and the straight-through knot threaded connection of second, and atomizing nozzle links to each other with inferior transfer line through the straight-through knot of second, and the straight-through knot of second links to each other with the grafting of inferior transfer line.

Preferably, the protection device comprises fixed plate, protecting shell, supersonic generator, signal amplifier, sponge guard shield, fixing clip, mount and fixed block, and two supersonic generator and fixed plate bolted connection, and signal amplifier and supersonic generator electric connection, and signal amplifier and protecting shell threaded connection, and protecting shell and fixed plate bolted connection, and fixing clip and fixed plate set up as an organic whole, and the mount links to each other with the fixing clip through the round pin axle, and sponge guard shield and protecting shell bolted connection, and fixed block and fixed plate bolted connection, and mount and medical kit bolted connection.

Preferably, the bottom of fixed block is equipped with the protection screen panel, and the top of protection screen panel is equipped with the roof, and the bottom of protection screen panel is equipped with battery base, and battery base's center department is equipped with the dead lever, and the dead lever runs through the roof and links to each other with the fixed block, and is equipped with the deinsectization electric wire netting on the battery base, and deinsectization electric wire netting and battery base electric connection, and the outside cover of battery base is equipped with the lamp panel, and lamp panel and battery base threaded connection, and the bottom of battery base is equipped with the bottom plate, and bottom plate and battery base threaded connection.

Preferably, the inside of output three-dimensional knot and first bidirectional knot all is equipped with the wedge groove, and both ends all are equipped with the liquid outlet about main transfer line, and the outside of liquid outlet is equipped with the wedge inserted block, and the wedge inserted block sets up as an organic whole with main transfer line, and the wedge inserted block agrees with the wedge groove mutually.

Compared with the prior art, the beneficial effects of the utility model are that: the agricultural low-altitude unmanned helicopter combines pesticide application, insect killing and investigation together through the cooperation between the pesticide box, the spraying device and the protection device, improves the organization and modernization level of the overall control of the crop pest and disease damage, reduces the control cost, improves the pesticide use efficiency, has the characteristics of high efficiency, water and pesticide saving, even spraying and the like compared with the traditional manual spraying, can only spray 1 mu of pesticide per hour by manual spraying, not only has large operation labor intensity, but also can not help when the manual spraying is used for operating high and intensive crops, can save 50 percent of pesticide use amount by adopting the agricultural low-altitude unmanned helicopter for spraying, saves 90 percent of water consumption, has the efficiency which is 5 times of ground machinery and is more than 60 times of manual conventional spraying, can greatly reduce the labor cost, and simultaneously, the agricultural low-altitude unmanned helicopter adopts a particle spraying mode, can freely adjust a spraying angle under the action of an atomizing nozzle, a first bidirectional knot, a first straight-through knot, a second bidirectional knot and a second straight-through knot, has low case depreciation rate, low oil consumption, low labor cost, low maintenance cost, high coverage density and good prevention and control effect, is a spiral wing, has lower operation height, generally has a spraying flying speed of 3 m/s, a spraying device width of 3-4 m and an operation width of 4-8 m, can keep a fixed height of 1-2 m at the lowest distance with crops, and can be accelerated by downward airflow of a rotor wing to form aerosol flow when liquid medicine aerosol is sprayed out from the atomizing nozzle, so that the penetrability of the liquid medicine aerosol to the crops is directly increased, the pesticide drift degree is reduced, the coverage density is high, The spraying is even, the deposition amount and the coverage rate of the liquid medicine are superior to those of the conventional method, so that the prevention and treatment effect is better, the pollution of pesticide to soil can be prevented, and the ecological environment is protected. The agricultural low-altitude unmanned helicopter has mature technology, flexible operation and easy popularization, does not need a special lifting field, is free from aviation control on low-altitude operation, is not limited by terrain and height under the action of the radar module and the remote control operation module, only needs to take off at the head of the field within the flight height of the agricultural low-altitude unmanned helicopter to carry out operation on crops, particularly has irreplaceable advantages in the pesticide application operation of rice and high-stalk crops which cannot be entered by ground machines, only needs to input the GPS information of the crops collected by the data collection module into an internal control system of a ground control station, the ground control station gives instructions to the agricultural low-altitude unmanned helicopter according to route planning, the agricultural low-altitude unmanned helicopter can automatically complete agricultural spraying operation, and simultaneously with the low-altitude unmanned spraying operation, the progress condition of wine spraying operation can be observed in real time through a display interface of the ground control station, meanwhile, remote control operation can be adopted, man-machine separation is achieved, manual spraying of long-time pesticide contact is avoided, the risk of pesticide poisoning of operating personnel is greatly reduced, and the wine spraying machine is suitable for popularization and use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the protection device of the present invention;

FIG. 3 is a schematic view of the connection relationship of the protection device of the present invention;

FIG. 4 is a cross-sectional view of the output three-way junction of the present invention;

FIG. 5 is a cross-sectional view of a first bi-directional junction of the present invention;

fig. 6 is a cross-sectional view of a first through junction of the present invention.

In the figure: 1. a case, 2, a medicine box, 3, a fixed disk, 4, a locking disk, 5, a locking pin, 6, a support rod, 7, a support arm, 8, a driving motor, 9, a propeller, 10, a frame, 11, a filling opening, 12, an output pump, 13, an output three-way junction, 14, a main infusion tube, 15, a first two-way junction, 16, a first straight-through junction, 17, a spraying device, 18, a four-way junction, 19, a secondary infusion tube, 20, a second two-way junction, 21, a second straight-through junction, 22, an atomizing nozzle, 23, a protective device, 24, a fixed plate, 25, a protective shell, 26, an ultrasonic generator, 27, a signal expander, 28, a sponge shield, 29, a fixed clamp, 30, a fixed frame, 31, a fixed block, 32, a lamp panel, 33, a bottom plate, 34, a top plate, 35, a fixed rod, 36, a disinsection electric net, 37, a protective net, 38, a battery base, 39, a wedge-shaped insertion, 41. a wedge-shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an agricultural low-altitude unmanned helicopter comprises a case 1, the agricultural low-altitude unmanned helicopter is divided into three parts, a helicopter part, a handheld remote controller and a ground control station, the overall weight of the helicopter is 18.5kg without a battery, the helicopter part is the main body of the technical scheme, the handheld remote controller and the ground control station are not embodied in the technical scheme, the helicopter part is mainly used for executing flight tasks, the operating region is surveyed through a radar module, a remote control operation module, a picture transmission module and a data acquisition module which are integrated in the case 1, the collected information is transmitted back to the ground control station, a worker can control the helicopter part through the ground control station, the helicopter can avoid obstacles in the operating region under the action of the radar module, and the worker can also operate through the handheld remote controller, the man-machine separation is achieved, long-time pesticide contact during manual spraying is avoided, the remote controller is GL300N, the ground control station and the remote controller adapter are A14-057N1A, a battery and radar module, a remote control operation module, a picture transmission module and a data acquisition module are arranged in the case 1, the radar module is RD2418R, the top and the bottom of the case 1 are respectively provided with a fixed disc 3 and a medicine box 2, the fixed disc 3 and the medicine box 2 are respectively connected with the case 1 through bolts, the fixed disc 3 is used for connecting a support arm 7, the fixed disc 3 is circular, support arms 7 are respectively arranged on the circumference of the fixed disc 3, the support arms 7 are 8, the support arms 7 are used for fixing a driving motor 8, the inner side end parts of the support arms 7 are hinged with the fixed disc 3, the support arms 7 are provided with support rods 6, the support rods 6 are used for connecting a locking disc 4 and the support arms 7, and the number of the support rods 6 is, the support arm 6 is hinged with the support arm 7, the outer side end of the support arm 7 is provided with a driving motor 8, the size of a stator of the driving motor 8 is 100 multiplied by 15mm, the KV value is 75rpm/V, the maximum tension value is 13.5kg/roto, the maximum power value is 2400W/rotor, the weight value is 616g, the driving motor 8 is in bolted connection with the outer end of the support arm 7, the output end of the driving motor 8 is provided with a propeller 9, the diameter multiplied by the screw pitch value of the propeller 9 is 33 multiplied by 9inch, the weight value is (single blade) 90g, the propeller 9 is in bolted connection with the driving motor 8, the center of the fixed disk 3 is provided with a locking pin 5, the support arm 7 can be retracted by adjusting the locking pin 5, the volume of the helicopter part is reduced, when the locking pin 5 is completely screwed into the fixed disk 3, the support arm 7 and the support arm 6 are completely unfolded, and the locking pin, and the locking disk 4 is sleeved outside the locking pin 5, the locking disk 4 is used for fixing the stay bar 6, the locking disk 4 is in threaded connection with the locking pin 5, the locking disk 4 is connected with the supporting arm 7 through the stay bar 6, the locking pin 5 penetrates through the fixed disk 3, the front side and the rear side of the bottom of the case 1 are respectively provided with a frame 10, the frame 10 is a landing gear of a helicopter part and is used for supporting a machine body, the frame 10 is in bolted connection with the case 1, the front side and the rear side of the medicine box 2 are respectively provided with a filling opening 11, the left side and the right side of the medicine box 2 are respectively provided with a protection device 23, the protection device 23 integrates an ultrasonic driving function and a pest killing function, the protection device 23 is in bolted connection with the medicine box 2, an output pump 12 is arranged below the filling opening 11 and is used for conveying liquid medicines to a main liquid conveying pipe 14 and a secondary liquid conveying pipe 19, and two output, and the output ends of the two output pumps 12 are all sleeved with output three-way knots 13, the output three-way knots 13 are used for connecting a main infusion tube 14 and an infusion pump 12, the two output three-way knots 13 are respectively connected with the output end rabbets of the output pumps 12, the left side and the right side of each output three-way knot 13 are respectively provided with 8 main infusion tubes 14, the main infusion tubes 14 are respectively connected with the output three-way knots 13 in an inserting way, a first two-way knot 15 is arranged between the two main infusion tubes 14, the first two-way knot 15 is movably inserted with the main infusion tube 14, the left end and the right end of each main infusion tube 14 are respectively provided with a first straight-through knot 16, the number of the first straight-through knots 16 is 4, the first straight-through knots 16 are connected with the main infusion tube 14 in an inserting way, the first straight-through knots 16 are provided with spraying devices 17, the flow measurement range of the spraying devices 17 is 0.45-5L/, the driving motor 8, the output pump 12 and the protective device 23 are respectively electrically connected with a battery, a radar module, a remote control module, a picture transmission module and a data acquisition module in the case 1, the spraying device 17 consists of a four-way junction 18, a secondary infusion tube 19, a second two-way junction 20, a second through junction 21 and an atomizing nozzle 22, the four-way junction 18 is connected with a spigot of the first through junction 16, the four secondary infusion tubes 19 are inserted in the four-way junction 18 in a cross shape, the second two-way junction 20 is positioned between the two secondary infusion tubes 19, the secondary infusion tube 19 is movably inserted in the second two-way junction 20, the atomizing nozzle 22 is in threaded connection with the second through junction 21, the atomizing nozzle 22 is connected with the secondary tube 19 through the second through junction 21, the second through junction 21 is inserted in connection with the secondary infusion tube 19, the protective device 23 consists of a fixing plate 24, a protective shell 25, an ultrasonic generator 26, a signal expander 27, a protective device 23 and a liquid tube 19, Sponge guard shield 28, fixing clip 29, mount 30 and fixed block 31 are constituteed, and two supersonic generator 26 and 24 bolted connection of fixed plate, and signal amplifier 27 and supersonic generator 26 electric connection, and signal amplifier 27 and 25 threaded connection of protecting shell, and protecting shell 25 and 24 bolted connection of fixed plate, and fixing clip 29 sets up as an organic whole with fixed plate 24, and mount 30 links to each other with fixing clip 29 through the round pin axle, and sponge guard shield 28 and 25 bolted connection of protecting shell, and fixed block 31 and 24 bolted connection of fixed plate, and mount 30 and medical kit 2 bolted connection, fixed block 31 is used for connecting fixed protection screen panel 37 and camera, the camera adopts the FPV camera, visual angle (FOV), the level: 98 degrees, vertical: 78 degrees, the bottom of the fixed block 31 is provided with a protective screen 37, the protective screen 37 is used for preventing workers from being touched by mistake during disassembly and assembly, the top end of the protective screen 37 is provided with a top plate 34, the bottom end of the protective screen 37 is provided with a battery base 38, the battery base 38 is used for installing a battery required for driving the insect killing grid 36 and the ultrasonic generator 26, the center of the battery base 38 is provided with a fixed rod 35, the fixed rod 35 is used for connecting the fixed block 31, the fixed rod 35 penetrates through the top plate 34 to be connected with the fixed block 31, the battery base 38 is provided with the insect killing grid 36, the insect killing grid 36 is used for killing winged insects, the insect killing grid 36 is electrically connected with the battery base 38, the lamp panel 32 is sleeved outside the battery base 38, the lamp panel 32 is used for installing an indicator lamp, the lamp panel 32 is in threaded connection with the battery base 38, the bottom of the battery base 38 is, the inside of output three-way knot 13 and first bidirectional knot 15 all is equipped with wedge groove 41, and the both ends all are equipped with liquid outlet 40 about main transfer line 14, and the outside of liquid outlet 40 is equipped with wedge inserted block 39, and wedge inserted block 39 sets up as an organic whole with main transfer line 14, and wedge inserted block 39 agrees with wedge groove 41 mutually, and wedge inserted block 39 can ensure that main transfer line 14 and secondary transfer line 19 rotate from top to bottom and do not appear leaking in first bidirectional knot 15 and second bidirectional knot 20.

An agricultural low-altitude unmanned helicopter is composed of a case 1, a medicine box 2, a fixed disc 3, a locking disc 4, a locking pin 5, a support rod 6, a support arm 7, a driving motor 8, a propeller 9, a frame 10, a filling port 11, an output pump 12, an output three-way junction 13, a main infusion tube 14, a first bidirectional junction 15, a first straight-through junction 16, a spraying device 17, a four-way junction 18, a secondary infusion tube 19, a second bidirectional junction 20, a second straight-through junction 21, an atomizing nozzle 22 and other parts, when the agricultural low-altitude unmanned helicopter is used, the support rod 6 and the support arm 7 are unfolded by rotating the locking pin 5, liquid medicine is added into the medicine box 2 through the filling port 11, the main infusion tube 14 and the secondary infusion tube 19 are pulled, the positions of the main infusion tube 14 and the secondary tube 19 in the first bidirectional junction 15 and the second bidirectional junction 20 are adjusted, so that the spraying angle of the atomizing nozzle 22 is adjusted, and a wedge-shaped insert 39 is embedded into a wedge-shaped, can effectually prevent main transfer line 14, inferior transfer line 19, the leakage appears in the junction of first bilateral knot 15 and the bilateral knot 20 of second, promote sealing performance, the staff assigns flight mission instruction to this agricultural low latitude unmanned helicopter through handheld remote controller or ground control machine station, this agricultural low latitude unmanned helicopter sprays the region of required operation, drive or deinsectization operation, during the epidemic situation, the staff also can install bluetooth speaker on fixed block 31, it drives to disperse and moves back to the people of gathering through camera and ground control machine station, accomplish the flight work of this agricultural low latitude unmanned helicopter.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides an unmanned helicopter of agricultural low latitude, includes quick-witted case (1), its characterized in that: the remote control cabinet is characterized in that a battery and radar module, a remote control operation module, a picture transmission module and a data acquisition module are arranged in the cabinet (1), the top and the bottom of the cabinet (1) are respectively provided with a fixed disk (3) and a medicine box (2), the fixed disk (3) and the medicine box (2) are respectively connected with the cabinet (1) through bolts, the fixed disk (3) is circular, the circumference of the fixed disk (3) is respectively provided with a plurality of supporting arms (7), the inner side end parts of the supporting arms (7) are hinged with the fixed disk (3), the supporting arms (7) are provided with supporting rods (6), the number of the supporting rods (6) is equal to that of the supporting arms (7), the supporting rods (6) are hinged with the supporting arms (7), the outer side end parts of the supporting arms (7) are provided with driving motors (8), and the driving motors (8) are connected with the outer ends of the supporting arms (7) through bolts, the output end of the driving motor (8) is provided with a propeller (9), the propeller (9) is in bolted connection with the driving motor (8), the center of the fixed disc (3) is provided with a locking pin (5), the locking pin (5) is in threaded connection with the fixed disc (3), the locking disc (4) is sleeved outside the locking pin (5), the locking disc (4) is in threaded connection with the locking pin (5), the locking disc (4) is connected with the supporting arm (7) through the supporting rod (6), the locking pin (5) penetrates through the fixed disc (3), the front side and the rear side of the bottom of the case (1) are both provided with a rack (10), the rack (10) is in bolted connection with the case (1), the front side and the rear side of the medicine case (2) are both provided with filling openings (11), the left side and the right side of the medicine case (2) are both provided with protective devices (23), and the protective devices (23) are in bolted connection with the medicine, and the lower of the filling opening (11) is provided with an output pump (12), and two output pumps (12) are positioned at the front and back sides of the medicine box (2) and are respectively connected with the medicine box (2) by bolts, the output ends of the two output pumps (12) are respectively sleeved with an output three-way knot (13), and the two output three-way knots (13) are respectively connected with the output end rabbet of the output pump (12), the left and right sides of the output three-way knot (13) are respectively provided with a main infusion tube (14), the main infusion tube (14) is in a plurality, the main infusion tube (14) is respectively connected with the output three-way knot (13) in an inserting manner, a first two-way knot (15) is arranged between the two main infusion tubes (14), the first two-way knot (15) is movably inserted with the main infusion tube (14), the left and right ends of the main infusion tube (14) are respectively provided with a first straight knot (16), and the first straight knot (16), and the first straight-through knot (16) is spliced with the main infusion tube (14), the spraying device (17) is arranged on the first straight-through knot (16), the spraying device (17) is connected with the spigot of the first straight-through knot (16), and the driving motor (8), the output pump (12) and the protection device (23) are respectively and electrically connected with the battery and radar module, the remote control operation module, the image transmission module and the data acquisition module in the case (1).

2. The agricultural low-altitude unmanned helicopter of claim 1, wherein: the spraying device (17) consists of a four-way junction (18), a secondary infusion tube (19), a second two-way junction (20), a second two-way junction (21) and an atomizing nozzle (22), the four-way junction (18) is connected with a spigot of the first two-way junction (16), the secondary infusion tube (19) is spliced on the four-way junction (18) in a cross manner, the second two-way junction (20) is positioned between the secondary infusion tubes (19), the secondary infusion tube (19) is movably spliced with the second two-way junction (20), the atomizing nozzle (22) is in threaded connection with the second two-way junction (21), the atomizing nozzle (22) is connected with the secondary infusion tube (19) through the second two-way junction (21), and the second two-way junction (21) is spliced with the secondary infusion tube (19).

3. The agricultural low-altitude unmanned helicopter of claim 1, wherein: the protection device (23) consists of a fixing plate (24), a protective shell (25), an ultrasonic generator (26), a signal amplifier (27), a sponge protective cover (28), a fixing clip (29), a fixing frame (30) and a fixing block (31), and the two ultrasonic generators (26) are connected with the fixing plate (24) by bolts, the signal amplifier (27) is electrically connected with the ultrasonic generator (26), the signal amplifier (27) is in threaded connection with the protective shell (25), the protective shell (25) is connected with the fixing plate (24) by bolts, and the fixing clip (29) and the fixing plate (24) are arranged integrally, the fixed mount (30) is connected with the fixed clip (29) through a pin shaft, the sponge protective cover (28) is connected with the protective shell (25) through a bolt, the fixed block (31) is connected with the fixed plate (24) through bolts, and the fixed frame (30) is connected with the medicine box (2) through bolts.

4. An agricultural low altitude unmanned helicopter of claim 3, characterized in that: the bottom of fixed block (31) is equipped with protection screen panel (37), and the top of protection screen panel (37) is equipped with roof (34), and the bottom of protection screen panel (37) is equipped with battery base (38), and the center department of battery base (38) is equipped with dead lever (35), and dead lever (35) run through roof (34) and link to each other with fixed block (31), and be equipped with deinsectization electric wire netting (36) on battery base (38), and deinsectization electric wire netting (36) and battery base (38) electric connection, and the outside cover of battery base (38) is equipped with lamp panel (32), and lamp panel (32) and battery base (38) threaded connection, and the bottom of battery base (38) is equipped with bottom plate (33), and bottom plate (33) and battery base (38) threaded connection.

5. The agricultural low-altitude unmanned helicopter of claim 1, wherein: the inside of output three-way knot (13) and first bidirectional knot (15) all is equipped with wedge groove (41), and both ends all are equipped with liquid outlet (40) about main transfer line (14), and the outside of liquid outlet (40) is equipped with wedge inserted block (39), and wedge inserted block (39) and main transfer line (14) set up as an organic whole, and wedge inserted block (39) agree with wedge groove (41) mutually.

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