An agricultural unmanned aerial vehicle spraying device

Abstract

The application relates to the technical field of unmanned aerial vehicle spraying, in particular to an agricultural unmanned aerial vehicle spraying device. The device comprises a spraying unmanned aerial vehicle, a front support fixedly connected to the spraying unmanned aerial vehicle, a front shaft seat rotatably arranged on the front support, a positive wind plate fixedly connected to the front shaft seat, the positive wind plate being capable of driving the front shaft seat to rotate under the action of wind force, a front rotating shaft rotatably connected to the spraying unmanned aerial vehicle, the axial direction of the front rotating shaft being parallel to the positive wind plate, the front shaft seat being capable of driving the front rotating shaft to rotate through a belt wheel set during the rotating process of the front shaft seat, a front nozzle rotatably connected to the spraying unmanned aerial vehicle, liquid carried in the spraying unmanned aerial vehicle being capable of being sprayed out through the front nozzle, and the rotating shafts of the front rotating shaft and the front nozzle being fixedly connected so that the front nozzle is driven to rotate by the front rotating shaft, and the front nozzle is capable of spraying liquid in the adverse wind direction of the front-back direction. The device can automatically adjust the pesticide spraying angle under different wind directions and wind force conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the unmanned aerial vehicle spraying technical field, especially to an agricultural unmanned aerial vehicle spraying device. BACKGROUND

[0002] The spraying unmanned aerial vehicle is an automatic device specially used in the agricultural field for spraying pesticides on crops, also known as agricultural plant protection unmanned aerial vehicle, which can perform pesticide spraying operation in the air above the farmland, effectively improving the agricultural production efficiency.

[0003] At present, the spraying unmanned aerial vehicle is usually applied to large-area planting farmland. Due to the open planting area, wind often occurs during the operation process. The sprayed pesticide will be excessively scattered to one side under the action of wind force, resulting in that the pesticide is difficult to be sprayed in the target area, causing the loss of pesticide, and the pesticide may be excessively sprayed in other areas, because the pesticide may be blown to the already sprayed area when spraying the target area. Therefore, it is necessary to develop an agricultural unmanned aerial vehicle spraying device capable of adjusting the spraying angle according to the wind direction and wind force. SUMMARY

[0004] In order to overcome the defect that the sprayed pesticide will be excessively scattered to one side under the action of wind force in the prior art, the purpose of the present application is to provide an agricultural unmanned aerial vehicle spraying device capable of adjusting the spraying angle according to the wind direction and wind force.

[0005] The technical scheme is as follows: an agricultural unmanned aerial vehicle spraying device, comprising a spraying unmanned aerial vehicle, a front support fixedly connected to the spraying unmanned aerial vehicle, a front shaft seat rotatably arranged on the front support, a wind plate fixedly connected to the front shaft seat, the wind plate being capable of driving the front shaft seat to rotate under the action of wind force, a front rotating shaft rotatably connected to the spraying unmanned aerial vehicle, the axial direction of the front rotating shaft being parallel to the wind plate, the front shaft seat being capable of driving the front rotating shaft to rotate through a belt pulley set during the rotation process of the front shaft seat, a front nozzle rotatably connected to the spraying unmanned aerial vehicle, liquid carried in the spraying unmanned aerial vehicle being capable of being sprayed out through the front nozzle, the rotating shaft of the front nozzle being fixedly connected to the front rotating shaft, so that the front nozzle is driven to rotate by the front rotating shaft, and the front nozzle is capable of spraying liquid in the opposite direction of the wind.

[0006] As an improvement of the above-mentioned scheme, it further comprises a stroke reduction mechanism for preventing the front nozzle from rotating at will, the stroke reduction mechanism comprising a sleeve, the sleeve being rotatably connected to the front support and being drivingly connected to the front shaft seat through the belt pulley set, a secondary torsional spring being sleeved on the front shaft seat, the two ends of the secondary torsional spring being fixedly connected to the front shaft seat and the sleeve, a primary torsional spring being sleeved on the sleeve, the two ends of the primary torsional spring being fixedly connected to the front support and the sleeve, the elastic force of the primary torsional spring being greater than that of the secondary torsional spring, a stroke reduction sleeve being fixedly connected in the sleeve, the front shaft seat penetrating through the stroke reduction sleeve and being rotatably connected thereto, a notch being formed in the stroke reduction sleeve in the axial direction, a push rod being fixedly arranged on the front shaft seat, the push rod being located in the notch formed in the stroke reduction sleeve, so that the sleeve is driven to rotate by the push rod during the rotation process of the front shaft seat.

[0007] As an improvement of the above scheme, the notch of the reducing sleeve is larger than the width of the push rod, so that the push rod can only contact with the reducing sleeve after the front axle seat rotates a certain angle.

[0008] As an improvement of the above scheme, it further comprises an exhaust plate, the exhaust plate is rotationally connected to the positive plate, the positive plate is provided with a through hole for airflow to pass through, and the exhaust plate is located in the through hole.

[0009] As an improvement of the above scheme, it further comprises a locking mechanism for locking the exhaust plate, the locking mechanism comprises a screw, the screw is threadedly connected to the positive plate, a number of fixing rings equal to the exhaust plate are rotationally connected to the screw, a limiting rod is fixedly connected to each of the fixing rings, a guide plate for guiding the limiting rod is arranged on the positive plate, a torsion plate is fixedly connected to the exhaust plate, the limiting rod and the torsion plate are inserted and matched to limit the rotation of the exhaust plate, and the screw and the positive plate are threadedly matched to lock the height of the fixing ring.

[0010] As an improvement of the above scheme, it further comprises a control mechanism for adjusting the spraying angle according to the wind force in the left and right directions, the control mechanism comprises a rear rotating shaft, the rear rotating shaft is arranged on the spraying unmanned aerial vehicle, the rear rotating shaft and the front rotating shaft are vertically distributed, a rear nozzle is rotationally connected to the spraying unmanned aerial vehicle, the pesticide carried in the spraying unmanned aerial vehicle can also be sprayed out through the rear nozzle, a guide ring is fixedly connected to the rear nozzle, the rear rotating shaft and the guide ring are slidingly connected, the rear rotating shaft can drive the rear nozzle to rotate in different directions through the guide ring when the rear rotating shaft rises or falls, a small support is fixedly connected to the spraying unmanned aerial vehicle, a rear axle seat is rotationally connected to the small support, a rear torsion spring is sleeved on the rotating shaft of the rear axle seat, the two ends of the rear torsion spring are fixedly connected to the rear axle seat and the small support, a side plate is fixedly connected to the rear axle seat, a distribution assembly is connected to the side plate, and the distribution assembly can drive the rear rotating shaft to move in different directions according to the different rotating directions of the side plate.

[0011] As an improvement of the above scheme, the distribution assembly comprises a rear support, the rear support is fixedly connected to the spraying unmanned aerial vehicle, a sliding seat is slidingly connected to the rear support, two springs distributed in an up-down manner are arranged on the rear support, the springs are used to keep the sliding seat in a central position, a reversing frame is fixedly connected to the sliding seat, two jacks are fixedly connected to the reversing frame, a top block is fixedly connected to an eccentric position of the rotating shaft of the rear axle seat, and the top block is located between the two jacks.

[0012] As an improvement of the above scheme, the positive plate and the side plate are vertically distributed to cope with wind forces in different directions.

[0013] As an improvement of the above scheme, the side plate is also provided with a through hole for airflow to pass through, and the through hole is also rotationally connected with an exhaust plate.

[0014] As an improvement of the above scheme, another locking mechanism is arranged on the rear side of the spraying unmanned aerial vehicle, and the locking mechanism is used to lock the exhaust plate on the side plate.

[0015] The beneficial effects are that the device can automatically adjust the pesticide spraying angle under different wind directions and wind conditions, effectively improving the accuracy and efficiency of pesticide spraying; through the transmission connection of the front wind plate, the front shaft seat, the belt pulley group and the front nozzle, the unmanned aerial vehicle can automatically adjust the spraying angle of the front nozzle according to the wind force in the front and back directions, effectively avoiding the excessive drift of pesticides under the action of wind force, improving the accuracy and effect of spraying, and the setting of the reduction mechanism further optimizes the rotation control of the front nozzle, so that it remains stable when the wind force is small or there is no wind, and only adjusts the spraying direction when the wind force reaches a certain degree, thereby enhancing the stability and adaptability of the device; the cooperation of the exhaust plate and the locking mechanism can not only reduce the flight resistance of the unmanned aerial vehicle when there is no natural wind, improve the flight efficiency and endurance, but also lock the exhaust plate when the spraying direction needs to be adjusted, ensure the normal operation of the spraying operation, in addition, the introduction of the regulating mechanism and the transfer assembly enables the unmanned aerial vehicle to automatically adjust the spraying angle of the rear nozzle according to the wind force in the left and right directions, further widening the application range of the unmanned aerial vehicle and enhancing its operation ability under complex weather conditions; the vertical distribution design of the front wind plate and the side wind plate fully considers the influence of multiple wind directions in front, back, left and right directions, improves the control effect of the device on the spraying angle, and enhances the adaptability of the unmanned aerial vehicle to complex environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0017] Figure 2 It is a schematic diagram of the belt pulley group connection relationship of the present application.

[0018] Figure 3 It is a schematic diagram of the sleeve position relationship of the present application.

[0019] Figure 4 It is a schematic diagram of the push rod position relationship of the present application.

[0020] Figure 5 It is a schematic diagram of the torsion plate position relationship of the present application.

[0021] Figure 6 It is a schematic diagram of the top block position relationship of the present application.

[0022] Figure 7 It is a schematic diagram of the guide ring structure of the present application.

[0023] The labels in the diagram are as follows: 10-Spraying drone, 11-Front bracket, 12-Front axle seat, 13-Front air vane, 14-Front rotating shaft, 15-Pulley assembly, 16-Front nozzle, 20-Sleeve, 21-Secondary torsion spring, 22-Main torsion spring, 23-Reduction sleeve, 24-Push rod, 30-Exhaust plate, 31-Screw, 32-Fixing ring, 33-Limit rod, 34-Torsion plate, 40-Rear bracket, 41-Rear rotating shaft, 42-Rear nozzle, 43-Guide ring, 44-Small bracket, 45-Rear axle seat, 46-Rear torsion spring, 47-Side air vane, 50-Slide seat, 51-Spring, 52-Reversing frame, 53-Top rod, 54-Top block. Detailed Implementation

[0024] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0025] Example 1: An agricultural drone spraying device, such as Figures 1-3 As shown, the device includes a spraying drone 10, a front support 11, a front axle seat 12, a wind-straightening plate 13, a front rotating shaft 14, a pulley assembly 15, and a front nozzle 16. The spraying drone 10 is a conventional drone used for spraying pesticides. Two front supports 11 are symmetrically fixed to the front side of the spraying drone 10. A front axle seat 12 is rotatably mounted on both front supports 11. A wind-straightening plate 13 is fixed to the front axle seat 12, and the wind-straightening plate 13 can drive the front axle seat 12 to rotate under wind power. A front rotating shaft 16 is rotatably connected to the frame on the front side of the spraying drone 10. 4. The axial direction of the front rotating shaft 14 is parallel to the windward plate 13. During the rotation of the front shaft seat 12, the front rotating shaft 14 can be driven to rotate through the pulley group 15. Two front nozzles 16 are rotatably connected to the frame on the front side of the spraying drone 10. The front nozzles 16 are connected to the water tank of the spraying drone 10, so that the pesticides carried in the spraying drone 10 can be sprayed out through the front nozzles 16. The front rotating shaft 14 and the rotating shaft of the two front nozzles 16 are fixedly connected, so that the two front nozzles 16 can be driven to rotate through the front rotating shaft 14, so that the front nozzles 16 can spray pesticides in the windward direction in the front-back direction.

[0026] like Figures 2-3The front nozzle 16 is also provided with a rotation preventing mechanism connected with the front axle seat 12, which comprises a sleeve 20, a secondary torsion spring 21, a primary torsion spring 22, a sleeve 23 and a push rod 24. The sleeve 20 is rotatably connected with the opposite ends of the two front supports 11 and is drivingly connected with the front axle seat 12 through the belt pulley set 15. The belt pulley set 15 comprises two belt pulleys and a driving belt. One of the belt pulleys is fixed on the front rotating shaft 14 and the other is fixed on the sleeve 20. The driving belt is wound around the two belt pulleys. The front axle seat 12 is symmetrically provided with two secondary torsion springs 21. One end of each of the secondary torsion springs 21 is fixed on the front axle seat 12 and the other end is fixed on the sleeve 20. The sleeve 20 is provided with a primary torsion spring 22. One end of the primary torsion spring 22 is fixed on the front support 11 and the other end is fixed on the sleeve 20. The elastic force of the primary torsion spring 22 is greater than that of the secondary torsion spring 21. The sleeve 20 is provided with a sleeve 23 fixedly connected therewith. The sleeve 23 is provided with a C-shaped notch in the axial direction. The front axle seat 12 passes through the sleeve 23 and is rotatably connected with the sleeve 23. The front axle seat 12 is rotatably arranged on the front support 11 through the sleeve 23 and the sleeve 20. The front axle seat 12 is provided with the push rod 24 fixedly arranged thereon. The push rod 24 is located in the notch of the sleeve 23. However, the notch of the sleeve 23 is larger than the width of the push rod 24. Therefore, the push rod 24 can not contact with the sleeve 23 until the front axle seat 12 is rotated by a certain angle. The front axle seat 12 can be driven to rotate the front rotating shaft 14 through the belt pulley set 15 during the rotation of the front axle seat 12.

[0027] The staff adds the liquid medicine to be sprayed in advance into the medicine box of the spraying unmanned aerial vehicle 10, and then controls the spraying unmanned aerial vehicle 10 to take off, with the side where the wind board 13 is located being the front side, so that the spraying unmanned aerial vehicle 10 flies forward. In the case that there is wind blowing from the front side, the wind force will push the wind board 13 and the front shaft seat 12 to rotate counterclockwise, and the auxiliary torsional spring 21 will be charged. When the wind force is small, the front shaft seat 12 rotates in a small range, and since the elastic force of the auxiliary torsional spring 21 is smaller than that of the main torsional spring 22, the push rod 24 does not contact the reducing sleeve 23 at this time, that is, the push rod 24 cannot push the sleeve 20 to rotate, and the sleeve 20 cannot drive the front rotating shaft 14 to rotate through the belt pulley set 15. When the wind force is large, the wind board 13 and the front shaft seat 12 rotate in a large range, and at this time the push rod 24 contacts the reducing sleeve 23, the push rod 24 pushes the sleeve 20 to rotate through the reducing sleeve 23, and the main torsional spring 22 is charged. When the sleeve 20 rotates, the front rotating shaft 14 and the front nozzle 16 are driven to rotate counterclockwise through the belt pulley set 15, so that the liquid outlet at the lower end of the front nozzle 16 is inclined forward, avoiding excessive backward spraying of the liquid medicine under the action of the wind force. When there is wind blowing from the rear side, the wind force will push the wind board 13 and the front shaft seat 12 to rotate clockwise, and the auxiliary torsional spring 21 will be charged. When the wind force is small, the front shaft seat 12 rotates in a small range, and since the elastic force of the auxiliary torsional spring 21 is smaller than that of the main torsional spring 22, the push rod 24 does not contact the reducing sleeve 23 at this time, that is, the push rod 24 cannot push the sleeve 20 to rotate, and the sleeve 20 cannot drive the front rotating shaft 14 to rotate through the belt pulley set 15. When the wind force is large, the wind board 13 and the front shaft seat 12 rotate in a large range, and at this time the push rod 24 contacts the reducing sleeve 23, the push rod 24 pushes the sleeve 20 to rotate through the reducing sleeve 23, and the main torsional spring 22 is charged. When the sleeve 20 rotates, the front rotating shaft 14 and the front nozzle 16 are driven to rotate clockwise through the belt pulley set 15, so that the liquid outlet at the lower end of the front nozzle 16 is inclined backward, thereby avoiding excessive forward spraying of the liquid medicine under the action of the wind force.

[0028] Example 2: Based on example 1, as shown in Figure 2 , further comprising three exhaust boards 30, the three exhaust boards 30 are rotationally connected to the wind board 13, and the three exhaust boards 30 are equidistantly distributed along the vertical direction. Three through holes are equidistantly formed on the wind board 13 along the vertical direction, and each exhaust board 30 is located in a through hole.

[0029] As shown in Figure 2 and Figure 5As shown, the locking mechanism is connected with the front air plate 13, and comprises a screw rod 31, a fixing ring 32, a limiting rod 33 and a torsion plate 34. The screw rod 31 is threadedly connected with the front air plate 13, and only the upper side of the screw rod 31 is provided with threads. Three fixing rings 32 are equidistantly and rotatably connected with the screw rod 31. The limiting rod 33 is fixedly connected with the fixing ring 32. The front air plate 13 is provided with a guide plate for guiding the limiting rod 33, so that the fixing ring 32 can move in the vertical direction when the screw rod 31 rotates. The torsion plate 34 is fixedly connected with one end of the screw rod 31 close to the rotating shaft of the exhaust plate 30. The limiting rod 33 and the torsion plate 34 are inserted and matched to limit the rotation of the exhaust plate 30. The screw rod 31 and the front air plate 13 are threadedly matched to lock the height of the fixing ring 32.

[0030] When there is no wind in the working environment, the no wind here refers to no natural wind, but there will be air resistance in the flight process of the spraying unmanned aerial vehicle 10, which is called non-natural wind here. The worker rotates the screw rod 31 to move the screw rod 31 downward, which drives the fixing ring 32 and the limiting rod 33 to move downward, so that the limiting rod 33 and the torsion plate 34 are out of contact. At this time, the non-natural wind can drive the exhaust plate 30 to rotate, so as to open the through hole on the front air plate 13 and reduce the resistance of the spraying unmanned aerial vehicle 10 in flight. When it is necessary to close the through hole on the front air plate 13, the worker first rotates the exhaust plate 30 to the vertical state, and then reversely rotates the screw rod 31 to move upward, so that the limiting rod 33 is inserted into the through hole on the torsion plate 34, thereby limiting the rotation of the exhaust plate 30, so as to adjust the spraying direction of the front nozzle 16 according to the wind force.

[0031] Embodiment 3: based on embodiment 2, as Figure 1 , Figure 6 and Figure 7Also shown, the spraying angle is adjusted according to the left and right direction wind force, and the adjusting mechanism is installed on the spraying unmanned aerial vehicle 10, and the adjusting mechanism comprises a rear rotating shaft 41, a rear nozzle 42, a guide ring 43, a small support 44, a rear shaft seat 45, a rear torsional spring 46, a side wind plate 47 and a distribution assembly, the rear side of the spraying unmanned aerial vehicle 10 is provided with the rear rotating shaft 41, the rear rotating shaft 41 and the front rotating shaft 14 are vertically distributed, two rear nozzles 42 are symmetrically and rotatably connected to the frame on the rear side of the spraying unmanned aerial vehicle 10, the rear nozzles 42 also communicate with the water tank of the spraying unmanned aerial vehicle 10 itself, so that the pesticide carried in the spraying unmanned aerial vehicle 10 can also be sprayed out through the rear nozzles 42, the guide ring 43 is fixedly connected to the rear nozzle 42, a V-shaped slide is formed in the guide ring 43, the two ends of the rear rotating shaft 41 are slidably connected to the slides on the two guide rings 43, and the two ends of the rear rotating shaft 41 are located in the middle of the guide ring 43 at normal height, so that the rear nozzle 42 is driven to rotate in different directions by the rising and falling of the rear rotating shaft 41, the small support 44 is fixedly connected to the rear side of the spraying unmanned aerial vehicle 10, the rear shaft seat 45 is rotatably connected to the small support 44, the rear torsional spring 46 is sleeved on the rotating shaft of the rear shaft seat 45, one end of the rear torsional spring 46 is fixedly connected to the rear shaft seat 45, the other end of the rear torsional spring 46 is fixedly connected to the small support 44, the side wind plate 47 is fixedly connected to the rear shaft seat 45, and the distribution assembly is connected to the side wind plate 47, the distribution assembly can drive the rear rotating shaft 41 to move in different directions according to the different rotating directions of the side wind plate 47.

[0032] As shown in Figure 1 and Figure 6 , the distribution assembly comprises a rear support 40, a sliding seat 50, a spring 51, a reversing frame 52, a top rod 53 and a top block 54, the rear support 40 is fixedly connected to the rear side of the spraying unmanned aerial vehicle 10, two guide rods are fixedly arranged on the rear support 40, the sliding seat 50 is slidably connected to the guide rods in the vertical direction, two springs 51 are sleeved on each guide rod in an up-down distribution, the sliding seat 50 is located between the two springs 51, the two springs 51 are used to keep the sliding seat 50 in the central position, the reversing frame 52 is fixedly connected to the sliding seat 50, two top rods 53 are fixedly connected to the reversing frame 52, the top block 54 is fixedly connected to the rotating shaft of the rear shaft seat 45, the position where the top block 54 and the rear shaft seat 45 are connected is the eccentric position of itself, the top block 54 is located between the two top rods 53, and the top block 54 is in a horizontal state when the side wind plate 47 is not affected by wind force.

[0033] With the perspective in the accompanying Figure 6 as an example, and Figure 6The side where the middle screw rod 31 is located is the front side. When wind blows from the right side of the spraying unmanned aerial vehicle 10, the wind force will push the side wind plate 47 and the rear shaft seat 45 to swing to the left, the rear torsional spring 46 will be stored, the rear shaft seat 45 swinging to the left will drive the top block 54 to push the top rod 53 upwards, thereby driving the reversing frame 52 and the sliding seat 50 to slide upwards, the upper spring 51 will be compressed, the sliding seat 50 drives the rear rotating shaft 41 to move upwards, and when the rear rotating shaft 41 moves upwards, the rear nozzle 42 will be driven to swing to the right through the guide ring 43, thereby avoiding excessive spraying of the liquid medicine to the left under the action of the wind force. Conversely, when wind blows from the left side of the spraying unmanned aerial vehicle 10, the wind force will push the side wind plate 47 and the rear shaft seat 45 to swing to the right, the rear torsional spring 46 will be stored, the rear shaft seat 45 swinging to the right will drive the top block 54 to push the top rod 53 downwards, thereby driving the reversing frame 52 and the sliding seat 50 to slide downwards, the lower spring 51 will be compressed, the sliding seat 50 drives the rear rotating shaft 41 to move downwards, and when the rear rotating shaft 41 moves downwards, the rear nozzle 42 will be driven to swing to the left through the guide ring 43, thereby avoiding excessive spraying of the liquid medicine to the right under the action of the wind force.

[0034] The front wind plate 13 and the side wind plate 47 are vertically distributed to adjust the angle of the front nozzle 16 and the rear nozzle 42 according to the wind force in different directions. It should be noted that the front nozzle 16 and the rear nozzle 42 are not used at the same time. When there is wind in the left and right directions, the rear nozzle 42 is used, and when there is wind in the front and back directions, the front nozzle 16 is used.

[0035] Three through holes are also equally spaced in the vertical direction on the side wind plate 47, and three exhaust plates 30 are also rotatably connected in the three through holes.

[0036] Another locking mechanism is arranged on the rear side of the spraying unmanned aerial vehicle 10, which is used to lock the exhaust plate 30 on the side wind plate 47. The specific arrangement mode is that the side wind plate 47 is threadedly connected with a screw rod 31, three fixing rings 32 are rotatably connected with the screw rod 31 at equal intervals, a limiting rod 33 is fixedly connected to the fixing ring 32, a guide plate for guiding the limiting rod 33 is arranged on the side wind plate 47, so that the fixing ring 32 can move in the vertical direction when the screw rod 31 rotates, a torsion plate 34 is fixedly connected to one end of the rotating shaft of the exhaust plate 30 close to the screw rod 31, and the limiting rod 33 and the torsion plate 34 are inserted and matched to limit the rotation of the exhaust plate 30. The screw rod 31 and the side wind plate 47 are threadedly matched to limit the height of the fixing ring 32. The operation mode of the locking mechanism is the same as that of the locking mechanism on the front wind plate 13, which will not be described here.

[0037] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An agricultural unmanned aerial vehicle spraying device comprising a spraying unmanned aerial vehicle (10), characterized in that, The front support (11) is fixed on the spraying unmanned aerial vehicle (10), the front shaft seat (12) is rotatably arranged on the front support (11), the front wind plate (13) is fixed on the front shaft seat (12), the front wind plate (13) can drive the front shaft seat (12) to rotate under the action of wind, the front rotating shaft (14) is rotatably connected to the spraying unmanned aerial vehicle (10), the axis of the front rotating shaft (14) is parallel to the front wind plate (13), the front rotating shaft (14) can be driven to rotate by the belt wheel group (15) during the rotation of the front shaft seat (12), the front nozzle (16) is rotatably connected to the spraying unmanned aerial vehicle (10), the liquid carried in the spraying unmanned aerial vehicle (10) can be sprayed out through the front nozzle (16), the rotating shafts of the front rotating shaft (14) and the front nozzle (16) are fixed, so that the front nozzle (16) is driven to rotate by the front rotating shaft (14), and the front nozzle (16) can spray liquid in the opposite direction of the wind in the front-rear direction; The control mechanism for adjusting the spraying angle according to the wind in the left-right direction also includes the rear rotating shaft (41), the rear rotating shaft (41) is arranged on the spraying unmanned aerial vehicle (10), and the rear rotating shaft (41) and the front rotating shaft (14) are vertically distributed, the rear nozzle (42) is rotatably connected to the spraying unmanned aerial vehicle (10), the pesticide carried in the spraying unmanned aerial vehicle (10) can also be sprayed out through the rear nozzle (42), the guide ring (43) is fixed on the rear nozzle (42), the rear rotating shaft (41) and the guide ring (43) are slidably connected, and when the rear rotating shaft (41) rises or falls, the rear nozzle (42) can be driven to rotate in different directions through the guide ring (43), the small support (44) is fixed on the spraying unmanned aerial vehicle (10), the rear shaft seat (45) is rotatably connected to the small support (44), the rear torsional spring (46) is sleeved on the rotating shaft of the rear shaft seat (45), the two ends of the rear torsional spring (46) are fixed to the rear shaft seat (45) and the small support (44), the side wind plate (47) is fixed on the rear shaft seat (45), and the side wind plate (47) is connected with the distribution assembly, the distribution assembly can drive the rear rotating shaft (41) to move in different directions according to the different rotating directions of the side wind plate (47); The distribution assembly includes the rear support (40), the rear support (40) is fixed on the spraying unmanned aerial vehicle (10), the slide seat (50) is slidably connected to the rear support (40), and two springs (51) are arranged on the rear support (40) in an up-down distribution, the springs (51) are used to keep the slide seat (50) in a central position, the reversing frame (52) is fixed on the slide seat (50), the two jacks (53) are fixed on the reversing frame (52), the eccentric position of the top block (54) is fixed on the rotating shaft of the rear shaft seat (45), and the top block (54) is located between the two jacks (53).

2. The unmanned agricultural aircraft spraying device of claim 1, wherein, The front nozzle (16) is prevented from rotating at will by a reduction mechanism, which comprises a sleeve (20) rotatably connected to the front support (11) and drivingly connected to the front axle seat (12) through the belt pulley set (15). The front axle seat (12) is sleeved with a secondary torsion spring (21), the two ends of which are fixedly connected to the front axle seat (12) and the sleeve (20). The sleeve (20) is sleeved with a primary torsion spring (22), the two ends of which are fixedly connected to the front support (11) and the sleeve (20), and the elastic force of the primary torsion spring (22) is greater than that of the secondary torsion spring (21). The sleeve (20) is fixedly connected with a reduction sleeve (23) inside, and the front axle seat (12) passes through the reduction sleeve (23) and is rotatably connected thereto. The reduction sleeve (23) is axially provided with a notch, and the front axle seat (12) is fixedly provided with a push rod (24) located in the notch of the reduction sleeve (23) to push the sleeve (20) to rotate during the rotation of the front axle seat (12).

3. The agricultural drone spraying device as described in claim 2, characterized in that it reduces... The notch of the reduction sleeve (23) is larger than the width of the push rod (24), so that the push rod (24) can only contact the reduction sleeve (23) after the front axle seat (12) is rotated by a certain angle.

4. The unmanned agricultural aircraft spraying device of claim 2, wherein, The exhaust plate (30) is rotatably connected to the front plate (13), and the front plate (13) is provided with a through hole for airflow to pass through, and the exhaust plate (30) is located in the through hole.

5. The agricultural drone spraying apparatus of claim 4, wherein, The locking mechanism for locking the exhaust plate (30) comprises a screw rod (31) threadedly connected to the front plate (13), a plurality of fixing rings (32) rotatably connected to the screw rod (31) and the same number of exhaust plates (30), a limiting rod (33) fixedly connected to each fixing ring (32), a guide plate provided on the front plate (13) for guiding the limiting rod (33), a torsion plate (34) fixedly connected to the exhaust plate (30), and the limiting rod (33) and the torsion plate (34) are inserted and matched to limit the rotation of the exhaust plate (30), and the screw rod (31) and the front plate (13) are threadedly matched to lock the height of the fixing ring (32).

6. The unmanned agricultural aircraft spraying device of claim 1, wherein, The front plate (13) and the side plate (47) are vertically distributed to cope with wind from different directions.

7. The unmanned agricultural aircraft spraying device of claim 5, wherein the spraying device is a boom. The side plate (47) is also provided with a through hole for airflow to pass through, and the through hole is also rotatably connected with an exhaust plate (30).

8. The agricultural drone spraying apparatus of claim 7, wherein, The rear side of the unmanned aerial vehicle (10) is provided with another locking mechanism for locking the exhaust plate (30) on the side plate (47).

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