Intelligent multi-section air-blast air curtain type spray boom sprayer

Abstract

The application discloses a kind of intelligent multi-section wind-sending air curtain type spray boom sprayer, it is related to spray machine technical field.The present application includes spray vehicle body and sensor system, sensor system includes angle sensor, liquid pressure sensor and central processing unit, angle sensor and central processing unit and liquid pressure sensor and central processing unit are electrically connected, spray vehicle body is fixedly connected with wind-sending air curtain device and multi-section spray boom assembly.The present application is designed by wind-sending air curtain device, combines axial flow fan with multiple distributors, and then uses specific algorithm to calculate the interval distance of air supply port, supplements the pressure loss of wind field everywhere, so that each processing pressure reaches the same value to improve liquid distribution, and by using target variable spray technology for spray boom frame, the nozzle is changed into adjustable caliber, and by the design of the rod structure, the stabilizing cloud platform is used to limit the shaking amplitude of the spray boom, and a collision prevention device is added at the end of the spray boom.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spraying machines, in particular to an intelligent multi-section air-sending air-curtain type spraying machine. BACKGROUND

[0002] The air-curtain assisted spraying technology is a technology of setting an air curtain near a spraying source, using the air curtain to flow air, and promoting the spraying to be better distributed to a target area, and the steps are air curtain setting, spraying and liquid distribution.

[0003] However, in the prior art, the traditional air-sending machine is fixedly installed with an axial flow fan, a wind pipe and a wind bag above a spraying rod frame, the wind field formed by the work of the fan decreases exponentially with the transmission to both sides, this shortcoming reduces the atomization effect of the pesticide liquid, increases the loss of the pesticide liquid, and intensifies the land pollution.

[0004] The spraying amount is constant and cannot be adjusted according to local conditions.

[0005] In addition, the large spraying machine inevitably shakes and shakes during work, which not only reduces the spraying quality but also amplifies the amplitude at the end of the spraying rod, which may damage the rod frame.

[0006] Therefore, a new solution is needed to solve the above problems. SUMMARY

[0007] The present application aims to provide an intelligent multi-section air-sending air-curtain type spraying machine.

[0008] To achieve the above purpose, the present application provides the following technical scheme: an intelligent multi-section air-sending air-curtain type spraying machine, comprising a spraying vehicle body and a sensor system, the sensor system comprising an angle sensor, a pesticide liquid pressure sensor and a central processing unit, the angle sensor and the central processing unit and the pesticide liquid pressure sensor and the central processing unit being electrically connected, the spraying vehicle body being fixedly connected with an air-sending air-curtain device and a multi-section spraying rod assembly, the air-sending air-curtain device being located at the top end of the multi-section spraying rod assembly, the air-sending air-curtain device comprising a shell, an air-sending fan, a conveying pipe, an air inlet and a wind sleeve, one end of the shell being provided with an air-sending fan for external air suction, both sides of the shell being provided with five air-sending distribution ports and one standby distribution port, the conveying pipe being fixedly connected at the air-sending distribution port, the bottom end of the conveying pipe being fixedly connected with the air inlet, the bottom end of the air inlet being fixedly connected with the wind sleeve, and the bottom end of the wind sleeve being provided with a fine spraying port.

[0009] Preferably, the multi-section spray rod assembly comprises a first section spray rod assembly, a first linkage adjustment assembly, a second section spray rod assembly, a second linkage adjustment assembly, a third section spray rod body and a protection assembly, both ends of the first section spray rod assembly are provided with the first linkage adjustment assembly, one end of the first linkage adjustment assembly away from the first section spray rod assembly is connected with the second section spray rod assembly, one end of the second section spray rod assembly away from the first linkage adjustment assembly is connected with the third section spray rod body through the second linkage adjustment assembly, one end of the third section spray rod body away from the second linkage adjustment assembly is provided with the protection assembly, the bottom end of the first section spray rod assembly, the top end of the second section spray rod assembly and the bottom end of the third section spray rod body are all provided with a plurality of spray head assemblies.

[0010] Preferably, the first section spray rod assembly comprises a carrying beam, a positioning column and a matching hole, both sides of the carrying beam are provided with the matching hole, both sides of the top end of the carrying beam are fixedly connected with the positioning column, the first linkage adjustment assembly comprises a rotating sleeve, a first electric push rod, an auxiliary matching carrier, an extension matching carrier and a second electric push rod, the auxiliary matching carrier is coaxially connected with the matching hole, the outer side of the positioning column is rotatably connected with the rotating sleeve, one end of the rotating sleeve is fixedly connected with the first electric push rod, one end of the first electric push rod away from the rotating sleeve is connected with the auxiliary matching carrier, one side of the auxiliary matching carrier away from the first electric push rod is fixedly connected with the extension matching carrier, the top end of the extension matching carrier is rotatably connected with the second electric push rod.

[0011] Preferably, the second section spray rod assembly comprises a second section spray rod body, a first matching sleeve block and a second matching sleeve block, one end of the second section spray rod body is fixedly connected with the first matching sleeve block, the top end of the second section spray rod body is fixedly connected with the second matching sleeve block, the output end of the second electric push rod is rotatably connected with the second matching sleeve block, one end of the first matching sleeve block away from the second section spray rod body is coaxially connected with the auxiliary matching carrier.

[0012] Preferably, the second linkage adjustment assembly comprises a positioning sheet, a third electric push rod, an engaging sheet and a damping assembly, one end of the second section spray rod body away from the first matching sleeve block is coaxially connected with the third electric push rod, both sides of the end of the second section spray rod body close to the third electric push rod and both sides of the end of the third section spray rod body close to the second section spray rod body are fixedly connected with the positioning sheet, one side of the positioning sheet is provided with the engaging sheet, the top end of the engaging sheet is hingedly connected with one end of the third electric push rod, the inner side of the second section spray rod body and the inner side of the third section spray rod body are provided with the damping assembly.

[0013] Preferably, the damping assembly comprises a cylinder, a sliding rod and a first spring, the cylinder is coaxially connected with the inner side of the second section of the spray rod body, the sliding rod is coaxially connected with the inner side of the third section of the spray rod body, one end of the sliding rod is slidingly connected with the inner side of the cylinder, and the sliding rod and the cylinder are connected through the first spring.

[0014] Preferably, the protection assembly comprises a damping mechanism shell, a reserved slot, a transverse fixing piece and a sliding force relieving assembly, the third section of the spray rod body is fixedly connected with the damping mechanism shell away from the second section of the spray rod body, a plurality of reserved slots are formed in the inner side of the damping mechanism shell, the transverse fixing piece is fixedly connected with the inner side of the reserved slot, and the sliding force relieving assembly is arranged at one end of the transverse fixing piece and is attached to the third section of the spray rod body away from the transverse fixing piece.

[0015] Preferably, the sliding force relieving assembly comprises a guide rod, a sliding sleeve and a second spring, one end of the guide rod is fixedly connected with the transverse fixing piece, one end of the sliding sleeve is fixedly connected with the third section of the spray rod body, the guide rod and the sliding sleeve are slidingly connected with the inner side of the guide rod and the sliding sleeve, and the second spring is arranged outside the guide rod and the sliding sleeve.

[0016] Preferably, the spray head assembly comprises a nozzle body, a matching ball head and a mounting hole, the matching ball head is arranged in the inner side of the nozzle body, the mounting hole is arranged on one side of the nozzle body, and the liquid pressure sensor is inserted into the mounting hole.

[0017] Preferably, the angle sensor is fixed on the two sides of the first section of the spray rod assembly, and the first linkage adjusting assembly and the second linkage adjusting assembly are electrically connected with the angle sensor.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] 1. The air supply air curtain device is designed, the axial flow fan is combined with the multiple distributors, a specific algorithm is used to calculate the interval distance of the air supply ports, the pressure loss of the air field at each position is supplemented, the treatment pressure at each position reaches the same value, and the liquid distribution is improved.

[0020] 2. The target variable spraying technology is used for the spray rod frame, the spray head is changed into an adjustable caliber, the shaking range of the spray rod is limited through the design of the rod structure and the use of the stabilizing holder, and the anti-collision device is arranged at the end of the spray rod. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 Structure diagram of the whole application;

[0023] Figure 2 Structure diagram of the whole application;

[0024] Figure 3 Structure diagram of the air curtain device of the application;

[0025] Figure 4 Structure diagram of the whole multi-section spray rod assembly of the application;

[0026] Figure 5 Structure diagram of the whole multi-section spray rod assembly of the application;

[0027] Figure 6 Structure diagram of the first-section spray rod assembly of the application;

[0028] Figure 7 Structure diagram of the first-section spray rod assembly of the application;

[0029] Figure 8 Structure diagram of the second-section spray rod assembly of the application;

[0030] Figure 9 Structure diagram of the second-section spray rod assembly of the application;

[0031] Figure 10 Structure diagram of the shock-absorbing assembly of the application;

[0032] Figure 11 Structure diagram of the shock-absorbing assembly of the application;

[0033] Figure 12 Structure diagram of the shock-absorbing assembly of the application;

[0034] Figure 13 Structure diagram of the shock-absorbing assembly of the application;

[0035] Figure: 1, air supply air curtain device; 2, multi-section spray bar assembly; 3, housing; 4, blower fan; 5, delivery pipe; 6, air inlet; 7, air sleeve; 8, first section spray bar assembly; 9, first linkage adjustment assembly; 10, second section spray bar assembly; 11, second linkage adjustment assembly; 12, third section spray bar body; 13, protection assembly; 14, nozzle assembly; 15, carrying beam; 16, positioning column; 17, mounting hole; 18, rotating sleeve; 19, first electric push rod; 20, auxiliary loading frame; 21, extension loading frame; 22, second electric Push rod; 23. Second section spray boom body; 24. First mounting block; 25. Second mounting block; 26. Positioning piece; 27. Third electric push rod; 28. Joint piece; 29. ​​Shock absorber assembly; 30. Cylinder body; 31. Slide rod; 32. First spring; 33. Shock absorber mechanism housing; 34. Reserved groove; 35. Horizontal fixing piece; 36. Sliding unloading assembly; 37. Nozzle body; 38. Mounting ball head; 39. Mounting hole; 40. Angle sensor; 41. Guide rod; 42. Sliding sleeve; 43. Second spring; 44. Liquid pressure sensor. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Example 1:

[0038] This embodiment discloses the design of an air curtain device that uses an axial flow fan combined with a multi-port distributor and uses a specific algorithm to calculate the spacing between the air outlets. This compensates for pressure losses in the wind field at each location, allowing the theoretical pressures of each process to reach the same value, thereby improving liquid distribution. This addresses the technical shortcoming raised in the background art that "conventional air delivery machines have an axial flow fan, air duct, and air bag fixed above the boom frame, and the wind field formed by the fan's work decreases exponentially as it is transferred to both sides."

[0039] See also Figures 1-3The utility model provides a kind of intelligent multi-section air curtain type spray boom sprayer, including spray vehicle body and sensor system, sensor system includes angle sensor 40, liquid pressure sensor 44 and central processing unit, angle sensor 40 is electrically connected with central processing unit and liquid pressure sensor 44 is electrically connected with central processing unit, spray vehicle body is fixedly connected with air curtain device 1 and multi-section spray boom assembly 2, air curtain device 1 is located at the top of multi-section spray boom assembly 2, air curtain device 1 includes shell 3, air blower fan 4, conveying pipe 5, air inlet 6 and wind sleeve pipe 7, one end of shell 3 is provided with air blower fan 4 for external air suction, both sides of shell 3 are provided with five air distribution ports and one spare distribution port respectively, conveying pipe 5 is fixedly connected with air distribution port, the bottom of air inlet 6 is fixedly connected with conveying pipe 5, the bottom of air inlet 6 is fixedly connected with wind sleeve pipe 7, and fine nozzle is formed in the bottom of wind sleeve pipe 7.

[0040] The wind mist in conveying meets resistance when flowing, which causes its pressure drop, which is usually simply referred to as pressure drop or pressure loss. The pressure loss is divided into extended pressure loss and local pressure loss. The extended pressure loss refers to the continuous and consistent pressure loss in the pipeline. The local pressure loss refers to the non-continuous pressure loss caused by the special components in the pipeline system, because they change the direction of the wind mist or narrow the local water flow passage. The traditional air distribution device causes the wind mist pressure flow received above the air curtain device to be uneven due to the extended pressure loss and the local pressure loss.

[0041] The utility model changes the diameter of the extended pipeline D to adjust the flow rate of the air inlet, finally ensures that the flow rate of each air inlet remains consistent, improves the problem of uneven air distribution of the traditional air blower, and sprays the liquid with variable quantity. Principle

[0042] Wherein: r = extended pressure loss Pa / m, Fa = friction resistance coefficient, p = density kg / m3, v = average flow rate m / s, D = pipeline inner diameter m;

[0043] By changing the diameter D of the extended pipeline, the flow rate of the air inlet is adjusted, and finally the flow rate of each air inlet is kept consistent, which improves the problem of uneven air distribution of the traditional air blower, and sprays the liquid with variable quantity.

[0044] When the air curtain device 1 is running, the air flow outside is sent into the inside of the shell 3 by the air blower fan 4. After the air flow passes through the shell 3, it enters the conveying pipe 5. Due to the change of the diameter and length of each conveying pipe 5, the air flow is output to the air inlet 6, which ensures that the speed, pressure and flow rate of the air flow entering the wind sleeve pipe 7 from each air inlet 6 are consistent, and finally the air flow is uniformly sprayed through the fine nozzle under the air curtain.

[0045] Example two

[0046] This embodiment is used to further disclose the specific structure of the multi-section spray rod assembly 2 on the premise of the above embodiment, thereby applying the target variable spray technology to the spray rod frame, changing the nozzle to an adjustable caliber, and limiting the vibration amplitude of the spray rod through the design of the rod structure and the use of a stabilizing pan-tilt control. An anti-collision device is added to the end of the spray rod, thereby solving the problem of constant spraying amount in the background technology and the inability to adapt to local conditions. In addition, large-scale sprayers will inevitably vibrate due to vibration during operation. This situation will not only reduce the spray quality, but also the end of the spray rod will amplify this amplitude, which may damage the rod frame.

[0047] See Figures 4-13 The multi-section spray boom assembly 2 includes a first-section spray boom assembly 8, a first linkage adjustment assembly 9, a second-section spray boom assembly 10, a second linkage adjustment assembly 11, a third-section spray boom body 12 and a protective assembly 13. The first linkage adjustment assembly 9 is provided at both ends of the first-section spray boom assembly 8. The end of the first linkage adjustment assembly 9 away from the first-section spray boom assembly 8 is connected to the second-section spray boom assembly 10. The end of the second-section spray boom assembly 10 away from the first linkage adjustment assembly 9 is connected to the third-section spray boom body 12 through the second linkage adjustment assembly 11. The end of the third-section spray boom body 12 away from the second linkage adjustment assembly 11 is provided with a protective assembly 13. A plurality of spray head assemblies 14 are provided at the bottom end of the first-section spray boom assembly 8, the top end of the second-section spray boom assembly 10 and the bottom end of the third-section spray boom body 12;

[0048] The first section of the spray boom assembly 8 includes a carrying beam 15, a positioning column 16 and a mounting hole 17. The mounting holes 17 are opened on both sides of the carrying beam 15, and the positioning columns 16 are fixedly connected to both sides of the top of the carrying beam 15;

[0049] The first linkage adjustment assembly 9 includes a rotating sleeve 18, a first electric push rod 19, an auxiliary loading frame 20, an extended loading frame 21 and a second electric push rod 22. The auxiliary loading frame 20 is coaxially connected to the fitting hole 17. The outer side of the positioning column 16 is rotatably connected to the rotating sleeve 18. One end of the rotating sleeve 18 is fixedly connected to the first electric push rod 19. The end of the first electric push rod 19 away from the rotating sleeve 18 is connected to the auxiliary loading frame 20. The side of the auxiliary loading frame 20 away from the first electric push rod 19 is fixedly connected to the extended loading frame 21. The top end of the extended loading frame 21 is rotatably connected to the second electric push rod 22.

[0050] Then, the auxiliary loading frame 20 is pulled to rotate around the fitting hole 17 during the extension and retraction process of the first electric push rod 19, and the second section spray boom assembly 10 is driven to complete the rotation of the angle by controlling the extension and retraction process of the second electric push rod 22;

[0051] The second-section spray boom assembly 10 includes a second-section spray boom body 23, a first fitting block 24, and a second fitting block 25. One end of the second-section spray boom body 23 is fixedly connected to the first fitting block 24, and the top end of the second-section spray boom body 23 is fixedly connected to the second fitting block 25. The output end of the second electric push rod 22 is rotatably connected to the second fitting block 25. The end of the first fitting block 24 away from the second-section spray boom body 23 is coaxially connected to the auxiliary loading frame 20.

[0052] The second linkage adjustment assembly 11 includes a positioning piece 26, a third electric push rod 27, a connecting piece 28 and a shock-absorbing assembly 29. The third electric push rod 27 is coaxially connected to the end of the second-section spray boom body 23 away from the first fitting block 24. Both sides of the second-section spray boom body 23 close to the third electric push rod 27 and both sides of the third-section spray boom body 12 close to the second-section spray boom body 23 are fixedly connected to the positioning piece 26. A connecting piece 28 is provided on one side of the positioning piece 26. The top end of the connecting piece 28 is hinged to one end of the third electric push rod 27. A shock-absorbing assembly 29 is provided between the inner side of the second-section spray boom body 23 and the inner side of the third-section spray boom body 12.

[0053] The shock absorbing assembly 29 includes a cylinder 30, a slide rod 31, and a first spring 32. The cylinder 30 is coaxially connected to the inner side of the second-section spray boom body 23. The slide rod 31 is coaxially connected to the inner side of the third-section spray boom body 12. One end of the slide rod 31 is slidably connected to the inner side of the cylinder 30. The slide rod 31 and the cylinder 30 are connected by the first spring 32.

[0054] During use, the third electric push rod 27 drives the engaging piece 28 to complete the deduction, so that the engaging piece 28 drives the third section boom body 12 to complete the angle adjustment. During the angle adjustment process, the sliding rod 31 slides inside the cylinder 30 to provide auxiliary elastic buffering during the angle adjustment process, thereby reducing the vibration caused by the third section boom body 12 when it is deployed;

[0055] The protective assembly 13 includes a shock absorbing mechanism housing 33, a reserved groove 34, a transverse fixing member 35 and a sliding unloading assembly 36. The end of the third-section spray boom body 12 away from the second-section spray boom body 23 is fixedly connected to the shock absorbing mechanism housing 33. A plurality of reserved grooves 34 are formed on the inner side of the shock absorbing mechanism housing 33. The inner side of the reserved groove 34 is fixedly connected to the transverse fixing member 35. One end of the transverse fixing member 35 is provided with a sliding unloading assembly 36. The end of the sliding unloading assembly 36 away from the transverse fixing member 35 is in contact with the third-section spray boom body 12.

[0056] The sliding force relief assembly 36 comprises a guide rod 41, a sliding sleeve 42 and a second spring 43, one end of the guide rod 41 is fixedly connected with the transverse fixing part 35, one end of the sliding sleeve 42 is fixedly connected with the third section of the spray rod body 12, the guide rod 41 is slidably connected with the inner side of the sliding sleeve 42, and the second spring 43 is arranged outside the guide rod 41 and the sliding sleeve 42;

[0057] In use, when the end of the third section of the spray rod body 12 is fitted, the guide rod 41 slides in the inner side of the sliding sleeve 42, so that the impact of the impact is transmitted to the second spring 43, the second spring 43 is used to complete the auxiliary force relief of the impact force, and the protection effect of the buffer application is achieved.

[0058] The spray head assembly 14 comprises a nozzle body 37, a fitting ball head 38 and a mounting hole 39, the inner side of the nozzle body 37 is provided with the fitting ball head 38, one side of the nozzle body 37 is provided with the mounting hole 39, the liquid pressure sensor 44 is inserted into the mounting hole 39, the liquid pressure sensor 44 is mounted and connected with the fitting ball head 38, the liquid pressure can be measured without affecting the liquid pressure, and the measured pressure is transmitted to the central processing unit, and the pesticide is sprayed according to the specific conditions of the farmland according to the measured pressure;

[0059] The variable pesticide spraying effect: the connection of the liquid pressure sensor 44 and the spray head assembly 14 can measure the liquid pressure without affecting the liquid pressure, the pesticide is sprayed according to the specific conditions of the farmland according to the measured pressure, and the formula is based on

[0060] The specific resistance is S=the second section of the spray rod assembly 10.3n^2 / D;

[0061] The flow Q=[P / pgSL]^(1 / 2);

[0062] The flow rate V=Q / 3. The spray head assembly 14 D^2 / 4;

[0063] The pipe inner diameter is D, the pipe inner wall roughness is n, the specific resistance is S, the velocity is V, the flow is Q, and the density is p, so the flow can be calculated.

[0064] The angle sensor 40 is fixed on both sides of the first section of the spray rod assembly 8, the first linkage adjusting assembly 9 and the angle sensor 40 and the second linkage adjusting assembly 11 and the angle sensor 40 are electrically connected, through the cooperation of the angle sensor 40 and the first linkage adjusting assembly 9 and the second linkage adjusting assembly 11, the first electric push rod 19, the auxiliary loading rack 20 and the third electric push rod 27 output different extension distances, so as to adjust the rotation angle of the second section of the spray rod assembly 10 and the third section of the spray rod body 12, and control the second section of the spray rod assembly 10 and the third section of the spray rod body 12 to be always horizontal.

[0065] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. An intelligent multi-stage air curtain boom sprayer, comprising a sprayer body and a sensor system, wherein the sensor system comprises an angle sensor (40), a liquid medicine pressure sensor (44) and a central processing unit, wherein the angle sensor (40) and the central processing unit, and the liquid medicine pressure sensor (44) and the central processing unit are electrically connected, and wherein: The spray vehicle body is fixedly connected with an air supply curtain device (1) and a multi-section spray bar assembly (2), the air supply curtain device (1) is located at the top of the multi-section spray bar assembly (2), the air supply curtain device (1) comprises a shell (3), an air supply fan (4), a delivery pipe (5), an air receiving port (6) and an air sleeve (7), one end of the shell (3) is provided with an air supply fan (4) for external air suction, and both sides of the shell (3) are provided with five air supply distribution ports and a spare distribution port, the air supply distribution port is fixedly connected with a delivery pipe (5), the bottom end of the delivery pipe (5) is fixedly connected with an air receiving port (6), the bottom end of the air receiving port (6) is fixedly connected with an air sleeve (7), and the bottom end of the air sleeve (7) is provided with a fine nozzle; The multi-section spray boom assembly (2) comprises a first section spray boom assembly (8), a first linkage adjustment assembly (9), a second section spray boom assembly (10), a second linkage adjustment assembly (11), a third section spray boom body (12) and a protection assembly (13); the first linkage adjustment assembly (9) is provided at both ends of the first section spray boom assembly (8); the end of the first linkage adjustment assembly (9) away from the first section spray boom assembly (8) is connected to the second section spray boom assembly (10); the end of the second section spray boom assembly (10) away from the first linkage adjustment assembly (9) is connected to the third section spray boom body (12) via the second linkage adjustment assembly (11); the end of the third section spray boom body (12) away from the second linkage adjustment assembly (11) is provided with a protection assembly (13); the bottom end of the first section spray boom assembly (8), the top end of the second section spray boom assembly (10) and the bottom end of the third section spray boom body (12) are all provided with a plurality of spray head assemblies (14); The first section spray bar assembly (8) includes a carrying beam (15), a positioning column (16) and a mounting hole (17), the mounting beam (15) is provided with a mounting hole (17) on both sides, and the positioning columns (16) are fixedly connected to both sides of the top of the carrying beam (15), the first linkage adjustment assembly (9) includes a rotating sleeve (18), a first electric push rod (19), an auxiliary loading frame (20), an extended loading frame (21) and a second electric push rod (22), the auxiliary loading frame (20) and the mounting hole (17) are provided. (17) coaxial connection, the outer side of the positioning column (16) is rotatably connected to a rotating sleeve (18), one end of the rotating sleeve (18) is fixedly connected to a first electric push rod (19), one end of the first electric push rod (19) away from the rotating sleeve (18) is connected to an auxiliary loading frame (20), the side of the auxiliary loading frame (20) away from the first electric push rod (19) is fixedly connected to an extended loading frame (21), and the top end of the extended loading frame (21) is rotatably connected to a second electric push rod (22); The second section spray boom assembly (10) comprises a second section spray boom body (23), a first fitting block (24) and a second fitting block (25), one end of the second section spray boom body (23) is fixedly connected to the first fitting block (24), the top end of the second section spray boom body (23) is fixedly connected to the second fitting block (25), the output end of the second electric push rod (22) is rotatably connected to the second fitting block (25), and the end of the first fitting block (24) away from the second section spray boom body (23) is coaxially connected to the auxiliary loading frame (20); The second linkage adjustment component (11) includes a positioning piece (26), a third electric push rod (27), a connecting piece (28) and a shock absorbing component (29); the end of the second section spray boom body (23) away from the first fitting block (24) is coaxially connected to the third electric push rod (27); both sides of the second section spray boom body (23) close to the end of the third electric push rod (27) and both sides of the third section spray boom body (12) close to the end of the second section spray boom body (23) are fixedly connected with the positioning piece (26); a connecting piece (28) is provided on one side of the positioning piece (26); the top end of the connecting piece (28) is hinged to one end of the third electric push rod (27); and a shock absorbing component (29) is provided between the inner side of the second section spray boom body (23) and the inner side of the third section spray boom body (12); The shock absorbing assembly (29) includes a cylinder (30), a slide rod (31) and a first spring (32); the cylinder (30) is coaxially connected to the inner side of the second section spray rod body (23); the slide rod (31) is coaxially connected to the inner side of the third section spray rod body (12); one end of the slide rod (31) is slidably connected to the inner side of the cylinder (30); and the slide rod (31) and the cylinder (30) are connected via the first spring (32); The protective assembly (13) comprises a shock absorbing mechanism housing (33), a reserved groove (34), a transverse fixing member (35) and a sliding unloading assembly (36); one end of the third section spray boom body (12) away from the second section spray boom body (23) is fixedly connected to the shock absorbing mechanism housing (33); a plurality of reserved grooves (34) are provided on the inner side of the shock absorbing mechanism housing (33); a transverse fixing member (35) is fixedly connected to the inner side of the reserved groove (34); one end of the transverse fixing member (35) is provided with a sliding unloading assembly (36); and one end of the sliding unloading assembly (36) away from the transverse fixing member (35) is in contact with the third section spray boom body (12).

2. The intelligent multi-stage air supply curtain boom sprayer according to claim 1, characterized in that: The sliding unloading assembly (36) comprises a guide rod (41), a sliding sleeve (42) and a second spring (43), one end of the guide rod (41) is fixedly connected to the transverse fixing member (35), one end of the sliding sleeve (42) is fixedly connected to the third section spray boom body (12), the guide rod (41) is slidably connected to the inner side of the sliding sleeve (42), and the second spring (43) is provided on the outer side between the guide rod (41) and the sliding sleeve (42).

3. The intelligent multi-stage air supply curtain boom sprayer according to claim 2, characterized in that: The nozzle assembly (14) comprises a nozzle body (37), a mounting ball head (38) and a mounting hole (39). The mounting ball head (38) is provided on the inner side of the nozzle body (37), and the mounting hole (39) is provided on one side of the nozzle body (37). The liquid medicine pressure sensor (44) is plugged into the mounting hole (39).

4. The intelligent multi-stage air supply curtain boom sprayer according to claim 3, characterized in that: The angle sensor (40) is fixed on both sides of the first section spray bar assembly (8), and the first linkage adjustment assembly (9) and the angle sensor (40) as well as the second linkage adjustment assembly (11) and the angle sensor (40) are all electrically connected.

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