Adjustable spray boom for agriculture and forestry plant protection unmanned helicopter

Abstract

The invention discloses an adjustable spray boom for an agricultural and forestry plant protection unmanned helicopter, and belongs to the technical field of plant protection spray booms. The adjustable spray boom for the agricultural and forestry plant protection unmanned helicopter comprises a storage box; the spraying rod is arranged above the storage box and is communicated with the liquid outlet of the storage box; the adjustable spray head assemblies are arranged on the spray rod; the adjustable spray head assembly comprises a connecting end, a first conversion bin, a limiting spray rod and a telescopic pipe arranged in a telescopic mode. The connecting end is connected with the spraying rod; the first conversion bin is communicated with the connecting end; the limiting spraying rod is connected to the lower end of the first conversion bin and internally provided with a telescopic pipe. The upper end of the telescopic pipe is communicated with the first conversion bin; the adjustable spray head assembly is configured to adjust the water outlet position of the spray head part relative to the limiting spray rod by changing the extension length of the telescopic pipe, so that the spraying range of the liquid medicine is changed. The single nozzle can adapt to different spraying tasks, and the nozzle does not need to be replaced frequently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant protection spray boom, more particularly to an adjustable spray boom for agricultural and forestry plant protection unmanned helicopter. BACKGROUND

[0002] In recent years, with the development of agricultural modernization, the agricultural and forestry plant protection pesticide application technology has been rapidly developed. Due to the different spraying tasks, the range covered by the used spray head is also different. Among them, the traditional pressure spray head produces a wider droplet spectrum of pesticide liquid, and the spraying distance is farther, which is suitable for spraying through the leaves and branches of vegetation. The centrifugal spray head produces uniform pesticide liquid atomization, and the spraying area is wider, which is suitable for large-area spraying of leaves.

[0003] However, the existing pesticide spray head for plant protection unmanned aerial vehicle has a single spraying operation mode in the use process, and different spray heads need to be replaced according to the production habits of different plants, which has poor adaptability, so as to reduce the efficiency of spraying operation. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the present application is to provide an adjustable spray boom for agricultural and forestry plant protection unmanned helicopter, which can adapt to different spraying tasks with a single spray head without frequent replacement of spray heads.

[0005] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0006] An adjustable spray boom for agricultural and forestry plant protection unmanned helicopter, comprising: a tank; a spray boom arranged above the tank and in communication with a liquid outlet of the tank; a plurality of adjustable spray head assemblies arranged on the spray boom; wherein the adjustable spray head assembly comprises a connecting end, a first conversion chamber, a limiting spray boom and a telescopic pipe arranged in a telescopic manner; the connecting end is connected with the spray boom; the first conversion chamber is in communication with the connecting end; the limiting spray boom is connected at the lower end of the first conversion chamber, and the telescopic pipe is arranged in the limiting spray boom; the upper end of the telescopic pipe is in communication with the first conversion chamber, and the lower end is provided with a spray head part; the adjustable spray head assembly is configured to change the extension length of the telescopic pipe to adjust the water outlet position of the spray head part relative to the limiting spray boom, so as to change the spraying range of the pesticide liquid.

[0007] Further, the adjustable spray head assembly further comprises an adjustable spray head, the adjustable spray head is arranged at the lower end of the limiting spray boom, and the telescopic pipe can extend or retract along the inner cavity of the adjustable spray head.

[0008] Further, the adjustable spray head assembly further comprises a limiting piece connected at the lower end of the adjustable spray head, for limiting and fixing the telescopic pipe in the extended state.

[0009] Further, the limiting piece is internally provided with an elastic lock sleeve, and the outer periphery of the spray head part is provided with a limiting clamping groove; when the telescopic pipe is extended, the end of the elastic lock sleeve can be clamped into the limiting clamping groove to fix the telescopic pipe.

[0010] Further, the adjustable spray head assembly further comprises an electromagnet arranged at the lower end of the limiting spray rod; the outer periphery of the telescopic pipe is fixedly provided with a magnet; by controlling the on-off of the electromagnet, the magnet can be attracted or released, so as to lock or unlock the telescopic state of the telescopic pipe.

[0011] Further, the upper end of the telescopic pipe is provided with a folding part which can be stretched under the action of hydraulic pressure to lengthen the length of the telescopic pipe.

[0012] Further, the adjustable spray head assembly further comprises an electromagnet arranged at the lower end of the limiting spray rod; the outer periphery of the telescopic pipe is fixedly provided with a magnet; by controlling the on-off of the electromagnet, the magnet can be attracted or released, so as to lock or unlock the telescopic state of the telescopic pipe.

[0013] Further, the spray rod comprises a mounting rod, a front spray rod and a side spray rod; the mounting rod is used for connecting the storage tank and the unmanned helicopter, and comprises a connecting bottom plate, opposite side mounting blocks and side cooperation blocks are arranged below the connecting bottom plate, a limiting jaw is arranged on the side cooperation block and used for clamping and fixing a hook on the storage tank; the front spray rod and the side spray rod are in communication with each other, the adjustable spray head assembly is arranged on the front spray rod, and the atomizing spray head assembly is arranged on the side spray rod.

[0014] Further, the mounting rod further comprises a fixed connecting rod and a limiting rod, the fixed connecting rod is connected below the side cooperation block, and the limiting rod penetrates through the side cooperation block and is inserted into the limiting jaw to fix and limit the hook clamped into the limiting jaw.

[0015] Further, the mounting rod further comprises a fixed connecting rod and a limiting rod, the fixed connecting rod is connected below the side cooperation block, and the limiting rod penetrates through the side cooperation block and is inserted into the limiting jaw to fix and limit the hook clamped into the limiting jaw.

[0016] Compared with the prior art, the advantages of the present application are that:

[0017] I. The adjustable spray head assembly can adjust the spraying height and coverage range in real time by changing the extension length of the telescopic pipe, and can be flexibly adjusted according to different crops and operation requirements without replacing the spray head, thereby improving the operation adaptability and spraying efficiency.

[0018] II. The adjustable spray head can stably extend and retract in the inner cavity of the telescopic pipe, thereby improving the smoothness of adjustment and structural stability and preventing liquid leakage.

[0019] Third, the setting of the limiting component can effectively fix the telescopic tube in the extended state, prevent it from accidentally retracting during operation, and ensure the continuity and consistency of spraying operation.

[0020] Fourth, it adopts a mechanical locking method with elastic locking sleeve and limit slot, which is simple and reliable in structure, easy to operate, and can realize the rapid locking and releasing of telescopic tube.

[0021] Fifth, by combining electromagnets and magnets, remote electronic locking of the telescopic state is achieved, which facilitates real-time adjustment of the spraying mode by the unmanned helicopter during flight.

[0022] VI. The folding part automatically stretches under hydraulic pressure, requiring no additional drive mechanism. It has a simple structure, fast response, energy saving, and high reliability.

[0023] VII. The atomizing nozzle assembly enables the spray bar to have atomizing spraying function, and can realize both jet and atomizing spraying modes at the same time, adapting to different agricultural and forestry spraying scenarios.

[0024] 8. The atomizing nozzles are evenly arranged around the second conversion chamber, with a wide atomization range and uniform distribution, which improves the coverage effect of large-area spraying.

[0025] 9. The spray bar adopts a modular design, which is compact and easy to install. It can be quickly connected to the storage tank through hooks and limiters, making it easy to disassemble and maintain.

[0026] 10. The limit rod further reinforces the fixation of the storage tank hook, preventing it from falling off during flight and enhancing the overall stability and safety of the system. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the plant protection spray boom of the present invention;

[0028] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0029] Figure 3 This is a top-view three-dimensional structural diagram of the plant protection spray boom of the present invention;

[0030] Figure 4 This is a side view of the plant protection spray boom of the present invention.

[0031] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0032] Figure 6 This is a frontal plan view of the plant protection spray boom of the present invention;

[0033] Figure 7 For the present invention Figure 6Enlarged structural schematic view at C;

[0034] Figure 8 Schematic view of the three-dimensional structure of the adjustable nozzle in the plant protection spray boom of the present application;

[0035] Figure 9 Schematic view of the internal cross-sectional structure of the adjustable nozzle of the present application when not adjusted;

[0036] Figure 10 Schematic view of the three-dimensional structure of the atomizing nozzle of the present application; Figure 9 Enlarged structural schematic view at D;

[0037] Figure 11 Schematic view of the internal cross-sectional structure of the adjustable nozzle of the present application after adjustment;

[0038] Figure 12 Schematic view of the three-dimensional structure of the atomizing nozzle of the present application; Figure 11 Enlarged structural schematic view at E;

[0039] Figure 13 Schematic view of the three-dimensional structure of the atomizing nozzle of the present application;

[0040] Figure 14 Schematic view of the structure of the adjustable nozzle in the plant protection spray boom of the present application in two cases.

[0041] Explanation of reference numerals in the drawings:

[0042] tank 1, tank cover 11, liquid outlet 12, hook 13, spray boom 2, mounting rod 21, connecting bottom plate 211, side mounting block 212, side fitting block 213, limiting tiger mouth 213-1, fixed connecting rod 214, limiting rod 215, connecting part 216, connecting spray boom 22, front spray boom 23, side spray boom 24, adjustable nozzle assembly 3, connecting end head 31, first conversion bin 32, limiting spray boom 33, electromagnet 331, adjustable nozzle 34, nozzle water outlet 341, clamping groove 342, limiting part 35, clamping block 351, elastic lock sleeve 352, fixed rotating part 353, limiting ring 354, telescopic pipe 36, folding part 361, nozzle part 362, water outlet groove 363, limiting clamping groove 364, magnet 365, atomizing nozzle assembly 4, atomizing connecting end head 41, second conversion bin 42, atomizing nozzle 43. DETAILED DESCRIPTION

[0043] Example 1:

[0044] Please refer to Figures 1-14The utility model relates to an adjustable spray rod for agroforestry plant protection unmanned helicopter, which comprises a storage tank 1, a spray rod 2, an adjustable spray head assembly 3 and an atomizing spray head assembly 4. The storage tank 1 is used for storing agroforestry spraying liquid. The spray rod 2 is detachably connected to the upper end of the storage tank 1. The spray rod 2 is erected along the periphery of the storage tank 1. A plurality of atomizing spray head assemblies 4 and adjustable spray head assemblies 3 are arranged on the spray rods on both sides and the front end of the storage tank 1.

[0045] Specifically, a liquid inlet is formed on one side of the upper end of the storage tank 1, and a tank cover 11 is arranged on the liquid inlet to seal the storage tank 1. A liquid outlet 12 is formed on the lower end of the storage tank 1. The liquid outlet 12 is connected to the spray rods on both sides and the front end of the storage tank 1 through pipelines and a pump body to spray the agroforestry plant protection liquid in the storage tank 1 towards the spray head end of the spray rods. Hooks 13 are fixedly arranged around the upper end of the storage tank 1 and hung on the spray rods 2.

[0046] Specifically, the spray bar 2 comprises a mounting rod 21, a connecting spray rod 22, a front spray rod 23 and a side spray rod 24, the hook 13 is hung on the lower end of the mounting rod 21, the bottom end of the mounting rod 21 is provided with a connecting bottom plate 211, the lower end of the connecting bottom plate 211 is respectively provided with a side mounting block 212 and a side matching block 213, the side mounting block 212 and the side matching block 213 are fixedly arranged on the connecting bottom plate 211, and the side mounting block 212 and the side matching block 213 abut against each other, the side end of the side matching block 213 is provided with a limiting tiger mouth 213-1 to abut the hook 13 into the limiting tiger mouth 213-1. The lower side of the side matching block 213 is fixedly provided with a fixed connecting rod 214, the end of the fixed connecting rod 214 is connected with a limiting rod 215, the limiting rod 215 penetrates the protruding part of the lower side of the side matching block 213, it should be noted that the protruding part of the side matching block 213 is the range of the tiger mouth of the limiting tiger mouth 213-1, the limiting rod 215 penetrates the side wall of the protruding part and is inserted into the limiting tiger mouth 213-1 until the other side wall of the protruding part of the limiting tiger mouth 213-1 is penetrated, so that the limiting rod 215 is inserted into the hook 13 of the limiting tiger mouth 213-1 to fix and limit the hook 13. The top end of the mounting rod 21 is provided with a connecting part 216, the connecting part 216 is matched with the bottom end connecting rod body of the unmanned helicopter to be hung, so as to connect the unmanned helicopter through the connecting part 216 at the top end of the mounting rod 21. The connecting spray rod 22 is arranged at the upper end of the tank 1, the two sides of the connecting spray rod 22 are respectively hung with the side spray rods 24 arranged on the two sides, and the middle part of the connecting spray rod 22 is hollow, so as to form a connecting range with a hollow middle part, so as to facilitate the hanging with the unmanned helicopter and leave space for part of the protruding parts. The front spray rod 23 is arranged at the front end of the connecting spray rod 22, and the middle part of the front spray rod 23 is provided with a protruding hollow connecting rod towards the upper end of the tank 1 and the direction close to the connecting spray rod 22, so as to be connected with the pump output end at the liquid outlet 12 of the tank 1, so that the pump outputs the plant protection liquid in the tank 1 into the front spray rod 23. A plurality of adjustable nozzle assemblies 3 are detachably arranged at the lower end of the front spray rod 23, so as to mainly spray the plant protection liquid through the plurality of adjustable nozzle assemblies 3. The side spray rods 24 are arranged on the two sides of the front spray rod 23, and the two side spray rods 24 are communicated with the two sides of the front spray rod 23, so as to input the plant protection liquid into the side spray rods 24 on the two sides. A plurality of atomizing nozzle assemblies 4 are detachably arranged at the lower end of the side spray rod 24, so as to assist in spraying the plant protection liquid through the plurality of atomizing nozzle assemblies 4, so as to realize large-scale spraying.

[0047] Specifically, the adjustable nozzle assembly 3 comprises a connecting end 31, a first conversion chamber 32, a limiting spray rod 33, a limiting piece 35 and a telescopic pipe 36. The connecting end 31 is detachably connected with the front spray rod 23. The first conversion chamber 32 is arranged at the lower end of the connecting end 31, and the connecting end 31 and the first conversion chamber 32 are in communication with each other. The first conversion chamber 32 is used to provide pressurization towards the spraying output end. The limiting spray rod 33 is arranged at the lower end of the first conversion chamber 32, and the limiting spray rod 33 is detachably connected with the first conversion chamber 32. The middle part of the limiting spray rod 33 is hollow. The lower end of the limiting spray rod 33 is provided with a ring of electromagnets 331. The electromagnets 331 are powered on and off by electric signals to realize the power-on and power-off of the electromagnets 331 through the unmanned helicopter terminal control of the electric signal emission. The adjustable nozzle 34 is clamped at the lower end of the limiting spray rod 33 and abuts against the electromagnets 331. The adjustable nozzle 34 is in the shape of a circular truncated cone, with a small-caliber end arranged at the lower end. The inside of the adjustable nozzle 34 is also provided with a cavity, which is consistent with the shape. The circumferential side wall of the adjustable nozzle 34 is provided with a plurality of uniform nozzle water outlets 341. The nozzle water outlets 341 penetrate the wall of the adjustable nozzle 34 to communicate the outside environment with the inside cavity of the adjustable nozzle 34. A circumferential clamping groove 342 is arranged at the lower end surface of the adjustable nozzle 34, and a male thread is arranged in the clamping groove 342. The limiting piece 35 is installed at the lower end of the adjustable nozzle 34, and the lower end of the limiting piece 35 matches the lower end of the adjustable nozzle 34. The upper end of the limiting piece 35 is provided with a clamping block 351, which matches the clamping groove 342. A female thread is arranged on the outer periphery of the clamping block 351 to enable the clamping block 351 to be screwed into the clamping groove 342 after being inserted into the clamping groove 342. A hole is arranged in the middle of the limiting piece 35 to allow the telescopic pipe 36 to enter and exit. A circular truncated cone-shaped elastic lock sleeve 352 is arranged on the inner side of the limiting piece 35. The elastic lock sleeve 352 is made of elastic material and always maintains the shape of a circular truncated cone with a small-caliber end arranged at the upper end before being deformed under pressure. A fixed rotating part 353 is arranged at the lower end of the inner periphery of the limiting piece 35. The fixed rotating part 353 is fixedly arranged at the lower end of the inner periphery of the limiting piece 35 to facilitate the adjustment of the shape of the elastic lock sleeve 352 under pressure. A limiting ring 354 is arranged at the edge of the end of the elastic lock sleeve 352 away from the fixed rotating part 353. The limiting ring 354 is integrally made with the elastic lock sleeve 352 to have elasticity to tighten or expand the upper end of the limiting ring 354 to a certain extent. The telescopic pipe 36 is arranged on the inner side of the limiting spray rod 33 and is detachably arranged with the first conversion chamber 32 and in communication with each other. A folding part 361 is arranged at one end of the telescopic pipe 36 close to the first conversion chamber 32. The folding part 361 is made of elastic material and is similar to a bellows in this embodiment.But different is that the folding part 361 is stretched and elongated when pressed by the pressure of the lower end of the telescopic tube 36, and the telescopic tube 36 is elastically recovered when not pressed by the lower end (when the water pressure stops or the limit stops the lower end), so that the telescopic tube 36 returns to the original length. However, it should be noted that the elasticity of the folding part 361 and the elastic sleeve 352 at the telescopic tube 36 will be affected after long-term use, so that the initial effect cannot be achieved. However, in order to effectively improve the initial effect, the limit piece 35 and the telescopic tube 36 can be connected and disconnected, so that regular maintenance and replacement can be ensured, and the effectiveness of the replacement of the spraying range can be ensured. Further, the end of the telescopic tube 36 (the end away from the first conversion chamber 32) is provided with a spray head part 362, which is in the shape of a circular truncated cone, and the small-diameter end is below. The small-diameter end of the spray head part 362 is in a sealed state, and a plurality of uniform water outlet slots 363 are formed on the side of the spray head part 362. It should be noted that the small-diameter end of the spray head part 362 is in a sealed state, so that after the water pressure enters the telescopic tube 36 through the first conversion chamber 32, the water pressure is pressed towards the sealed small-diameter end to stretch the telescopic tube 36 and stretch the folding part 361. The outer periphery of the upper end of the spray head part 362 is provided with a limiting clamping groove 364, which is matched with the limiting ring 354, and the maximum expansion elasticity diameter of the limiting ring 354 is matched with the limiting clamping groove 364, so that the telescopic tube 36 is stretched and fixed in position after the limiting ring 354 enters the limiting clamping groove 364 through the elastic sleeve 352. The outer periphery diameter of the telescopic tube 36 is smaller than the large-diameter end of the spray head part 362, and a magnet 365 is arranged on the outer periphery of the telescopic tube 36 close to the spray head part 362, and the magnet 365 is fixedly connected with the outer periphery of the telescopic tube 36. It should be noted that the inner cavity of the adjustable spray head 34 is provided with a through hole for inserting the telescopic tube 36. The electromagnet 331 is arranged on the outer wall of the telescopic tube 36, and a circular groove is formed between the adjustable spray head 34 and the telescopic tube 36 around the center of the telescopic tube 36, which is matched with the magnet 365, so that the magnet 365 can be inserted into the circular groove and abut against the electromagnet 331. It should be noted that when the spraying range does not need to be changed, the folding part 361 of the telescopic tube 36 remains in a folded state, and the electromagnet 331 remains in an energized state to maintain the adsorption state of the electromagnet 331 to the magnet 365, so that the telescopic tube 36 cannot be stretched in the adjustable spray head 34. When the spraying range needs to be changed, the electromagnet 331 is de-energized to cut off the adsorption state between the electromagnet 331 and the magnet 365, and the water pressure will press the small-diameter end of the spray head part 362 to change the state of the folding part 361 of the telescopic tube 36.The folding part 361 is stretched, the nozzle part 362 enters the elastic lock sleeve 352, and continuously moves outward to the outside of the limiting part 35 installed at the bottom end of the adjustable nozzle 34, and the limiting ring 354 starts to be pressed and moves to the limiting slot 364 outside the nozzle part 362, so that the telescopic pipe 36 is limited.

[0048] Specifically, the atomizing nozzle assembly 4 comprises an atomizing connecting end head 41, a second conversion chamber 42 and an atomizing nozzle 43. The atomizing connecting end head 41 is detachably connected with the side nozzle rod 24, the second conversion chamber 42 is installed at the lower end of the atomizing connecting end head 41, and the second conversion chamber 42 and the atomizing connecting end head 41 are in communication with each other. The atomizing nozzle 43 is arranged on the side of the second conversion chamber 42 to perform multi-directional atomizing spraying of the plant protection liquid, and assist the adjustable nozzle assembly 3 on the front nozzle rod 23 to perform the spraying task of the plant protection liquid.

[0049] Working principle:

[0050] When the adjustable nozzle rod works, the plant protection liquid in the tank is delivered to the nozzle rod through the pump body, and is branched to each adjustable nozzle assembly and atomizing nozzle assembly. When the spraying range needs to be adjusted, the magnet is released by controlling the electromagnetic iron to be de-energized, the nozzle part at the lower end of the telescopic pipe is pushed downward by the pressure of the plant protection liquid, and the folding part is stretched; when the telescopic pipe is stretched to the target position, the limiting ring of the elastic lock sleeve is clamped into the limiting slot of the nozzle part to realize mechanical locking. The atomizing nozzle assembly works synchronously to realize auxiliary atomizing spraying. The system realizes stepless adjustment of the spraying range and multi-mode collaborative spraying by combining hydraulic drive with mechanical / electromagnetic locking, which significantly improves the flexibility and efficiency of agricultural and forestry plant protection.

Claims

1. An adjustable spray boom for an agroforestry unmanned helicopter, characterized by, The utility model relates to a kind of adjustable spray head assemblies, including: Tank (1); Spray bar (2), the spray bar (2) is set above the tank (1), and is communicated with the liquid outlet (12) of the tank (1); A plurality of adjustable spray head assemblies (3) are arranged on the spray bar (2); Wherein, the adjustable spray head assembly (3) includes connecting end head (31), first conversion warehouse (32), limiting spray bar (33) and telescopic telescopic pipe (36) arranged in a telescopic manner; The connecting end head (31) is connected with the spray bar (2); The first conversion warehouse (32) is communicated with the connecting end head (31); The limiting spray bar (33) is connected at the lower end of the first conversion warehouse (32), and the telescopic telescopic pipe (36) is arranged in the inside thereof; The upper end of the telescopic telescopic pipe (36) is communicated with the first conversion warehouse (32), and the lower end is provided with spray head part (362); The adjustable spray head assembly (3) is configured to be able to adjust the water outlet position of the spray head part (362) relative to the limiting spray bar (33) by changing the extension length of the telescopic telescopic pipe (36), so as to change the spraying range of the chemical liquid.

2. The adjustable spray boom for agricultural and forestry unmanned helicopter according to claim 1, characterized in that: The adjustable spray head assembly (3) further includes an adjustable spray head (34), which is arranged at the lower end of the limiting spray bar (33), and the telescopic telescopic pipe (36) can be extended or retracted along the inner cavity of the adjustable spray head (34).

3. The adjustable spray boom for agroforestry unmanned helicopter according to claim 2, characterized in that: The adjustable spray head assembly (3) further includes a limiting member (35) connected to the lower end of the adjustable spray head (34) for limiting and fixing the telescopic telescopic pipe (36) in the extended state.

4. The adjustable spray boom of claim 3, wherein: The limiting member (35) is provided with an elastic lock sleeve (352) inside, and the outer periphery of the spray head part (362) is provided with a limiting clamping groove (364);When the telescopic telescopic pipe (36) is extended, the end of the elastic lock sleeve (352) can be clamped into the limiting clamping groove (364) to fix the telescopic telescopic pipe (36).

5. The adjustable spray boom of claim 2, wherein: The adjustable spray head assembly (3) further includes an electromagnet (331) arranged at the lower end of the limiting spray bar (33);The outer periphery of the telescopic telescopic pipe (36) is fixedly provided with a magnet (365);By controlling the on-off of the electromagnet (331), the magnet (365) can be attracted or released, so as to lock or unlock the telescopic state of the telescopic telescopic pipe (36).

6. The adjustable spray boom of claim 1, wherein: The upper end of the telescopic telescopic pipe (36) is provided with a folding part (361), which can be stretched under the action of hydraulic pressure to lengthen the length of the telescopic telescopic pipe (36).

7. The adjustable spray boom of claim 1, wherein: Further comprising a plurality of atomizing spray head assemblies (4), the atomizing spray head assembly (4) is arranged on the spray bar (2), and is used for atomizing spraying.

8. The adjustable spray boom of claim 7, wherein: The atomizing spray head assembly (4) includes atomizing connecting end head (41), second conversion warehouse (42) and atomizing spray head (43), the atomizing connecting end head (41) is connected with the spray bar (2), the second conversion warehouse (42) is communicated with the atomizing connecting end head (41), and the atomizing spray head (43) is arranged on the side of the second conversion warehouse (42).

9. The adjustable spray boom of claim 7, wherein: The spray rod (2) comprises a mounting rod (21), a front spray rod (23) and a side spray rod (24); the mounting rod (21) is used for connecting the tank (1) and the unmanned helicopter, and comprises a connecting bottom plate (211), opposite side mounting blocks (212) and side matching blocks (213) are arranged below the connecting bottom plate (211), a limiting clasp (213-1) is arranged on the side matching block (213) and is used for clamping and fixing a hook (13) on the tank (1); the front spray rod (23) and the side spray rod (24) are in communication with each other, the adjustable nozzle assembly (3) is arranged on the front spray rod (23), and the atomizing nozzle assembly (4) is arranged on the side spray rod (24).

10. The adjustable spray boom of claim 9, wherein: The mounting rod (21) further comprises a fixed connecting rod (214) and a limiting rod (215), the fixed connecting rod (214) is connected below the side matching block (213), and the limiting rod (215) penetrates through the side matching block (213) and is inserted into the limiting clasp (213-1) and is used for fixing and limiting the hook (13) clamped into the limiting clasp (213-1).

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