A strip variable spray boom sprayer for soybean and corn strip interplanting

Abstract

The application provides a soybean and corn strip composite planting zonal variable spray boom sprayer, which comprises a variable spraying system, a variable-width zonal spray boom, a spray boom lifting mechanism and a walking assembly, the spray boom lifting mechanism is installed between the walking assembly and the variable-width zonal spray boom, the variable-width zonal spray boom comprises a width adjusting device, two hydraulic cylinder mounting frames are respectively welded to a telescopic frame and an intermediate spray boom, the telescopic frame is sleeved on the intermediate spray boom and can freely extend and retract, the distance of the telescopic frame inserted into the intermediate spray boom is changed by controlling the hydraulic cylinder to extend and retract, the spraying range of the whole machine is changed, and different soybean and corn strip composite planting modes can be met by cooperating with wheel track adjustment. The independent digital double-variable spraying system is adopted, independent adjustment and control of each spray head are realized, spraying uniformity and precision are improved, meanwhile, two sets of variable spraying systems are respectively used for the soybean strip and the corn strip, and the required dosages can be respectively sprayed according to different requirements of the soybean and the corn.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of agricultural machinery, and particularly relates to a strip variable spraying boom for soybean and corn strip compound planting. BACKGROUND

[0002] The soybean and corn strip compound planting adopts a wide and narrow row intercropping mode (generally 4-6 rows of soybeans and 2-4 rows of corn intercropping), fully gives play to the edge row advantage of high-position crops, and can collect a season of soybeans without reducing the yield of corn, so that the problem of land competition between soybeans and corn can be effectively solved.

[0003] At present, the weeding method of the soybean and corn strip compound planting mainly adopts chemical weeding. Since soybeans and corn belong to different plant families, mixed use of herbicides will cause serious phytotoxicity problems during post-emergence weeding. Therefore, the soybean strip and the corn strip need to be sprayed separately during weeding operation. The traditional spraying boom sprayer adopts a flat planting mode to perform non-discriminatory full-coverage spraying on crops in the field, which cannot meet the requirements of strip spraying for the soybean and corn strip compound planting.

[0004] The prior arts CN112088855A, CN112753677A, CN115428780B, CN112616802A and CN217657841U study strip spraying boom sprayers specially applicable to the soybean and corn strip compound planting. Two sets of spraying systems are adopted to spray the soybean strip and the corn strip respectively, and the anti-interference plate is used to prevent cross spraying of the liquid medicine between the soybean strip and the corn strip. The spraying amount of the above strip spraying boom sprayer is constant during operation, and the spraying amount of the corn strip and the soybean strip cannot be changed in real time according to the operation information such as the operation speed and the weed density, resulting in waste of the pesticide.

[0005] Therefore, it is urgent to design a strip variable spraying boom sprayer for the soybean and corn strip compound planting, which can change the spraying amount of the soybean strip and the corn strip in real time according to the growth state and the demand of the soybeans and the corn, so as to realize accurate and efficient spraying of the pesticide. SUMMARY

[0006] In view of the defects in the prior art, the application provides a strip variable spraying boom sprayer for the soybean and corn strip compound planting, which can improve the spraying uniformity, reduce cross drift of the mist liquid, and realize accurate and efficient spraying of the pesticide.

[0007] The technical problem is solved by a soybean and corn strip composite planting zonal variable spray boom sprayer, which comprises a variable spray system, a variable width zonal spray boom, a spray boom lifting mechanism and a walking assembly, the spray boom lifting mechanism is installed between the walking assembly and the variable width zonal spray boom, the variable width zonal spray boom comprises a width adjusting device, the width adjusting device comprises hydraulic cylinders, a telescopic frame, hydraulic cylinder mounting frames and an intermediate spray boom, two hydraulic cylinder mounting frames are respectively welded to the telescopic frame and the intermediate spray boom, the two ends of the hydraulic cylinders are respectively installed on the hydraulic cylinder mounting frames through cylindrical pins, the hydraulic cylinders can freely rotate around the cylindrical pins, the telescopic frame is sleeved on the intermediate spray boom and can freely extend and retract, the distance of the telescopic frame inserted into the intermediate spray boom is changed by controlling the hydraulic cylinders to extend and retract, the spraying range of the whole machine is changed, and different soybean and corn strip composite planting modes can be met by cooperating with wheel track adjustment.

[0008] A spray boom fixing frame is installed on the variable width zonal spray boom, one end of the spray boom fixing frame is fixed on the side spray boom or the intermediate spray boom through bolts, the other end of the spray boom fixing frame is fixed and installed a spray boom position adjusting frame through bolts, a folding cover rear mounting frame is welded above the spray boom position adjusting frame, and the folding cover is fixed.

[0009] The folding cover comprises a lower fixed block, an upper fixed block, a fixed circular pipe, a rear shell body, a side shell body, a front shell body, a lower support rod, a movable plug joint, a reinforcing support rod, an angle fixed block, a fixed buckle, a rotating sleeve ring, a side support rod and a folding cover front mounting frame, the fixed circular pipe is fixed between the folding cover front mounting frame and the folding cover rear mounting frame through bolts, the upper fixed block and the lower fixed block are fixed on the cover fixed circular pipe through bolts, a groove is formed in the lower part of the lower fixed block, a circular hole is formed in the upper end of the side support rod, the side support rod is installed in the groove of the lower fixed block through a cylindrical pin and can freely rotate around the cylindrical pin in the groove, one end of the rotating sleeve ring is provided with a cylindrical hole and is sleeved and fixed on the middle lower position of the side support rod, the other end of the rotating sleeve ring is U-shaped and is provided with a cylindrical hole, the upper end of the reinforcing support rod is also provided with a cylindrical hole, the two are hinged through a cylindrical pin shaft and can freely rotate around the cylindrical pin, the lower end of the reinforcing support rod is installed in the movable plug joint, and the two are in interference fit, the movable plug joint is provided with four fixed holes, of which a lower through hole is sleeved and fixed with the lower support rod, two upper fixed holes are in interference fit with the two reinforcing support rods and are fixed; the angle fixed block is in interference fit with the side support rod and the lower support rod, so that the lower support rod and the two side support rods form a triangle, so that the folding cover is in a triangular shape in the unfolded state; the upper parts of the front shell body and the rear shell body are fixed on the fixed circular pipe, the lower parts of the front shell body and the rear shell body are fixed on the side support rod through the fixed buckle, the bottom parts of the front shell body and the rear shell body are respectively provided with cylindrical support rods, so that the front and rear shell bodies are not bent in the unfolded state, and the side shell body is fixed on the side support rod.

[0010] The spray rod lifting mechanism adopts a parallel four-bar structure, and two ends thereof are connected with the walking assembly and the variable-width sub-spray rod respectively through a cylindrical pin and can rotate freely around the cylindrical pin.

[0011] Further, the variable spray system comprises an industrial camera, a camera mounting rack, a medicine box one, a medicine box two, a diaphragm pump one, a diaphragm pump two, a spray valve group one, a spray valve group two, a control box, a power supply and a spray head assembly. The camera mounting rack is mounted on the variable-width sub-spray rod, and the industrial camera is fixed on the camera mounting rack through bolts. The industrial camera is mainly used to obtain image information of crops in the field, and the weed density grade is obtained after computer processing. The actual spray amount information of each spray head is determined through a decision model and sent to the control box. The medicine box one, the diaphragm pump one and the spray valve group one, the medicine box two, the diaphragm pump two and the spray valve group two, the control box and the power supply are respectively installed on the chassis of the walking assembly to form two independent spray systems for corn and soybeans, and variable spray is performed on corn strips and soybean strips respectively.

[0012] The spray head assembly comprises an aviation plug, a control box cover, a three-way connecting piece, a spray body, a nozzle, a solenoid valve, a control box body and a spray head circuit board. The spray head circuit board is installed below the control box cover through a hexagonal stud. The bottom end of the aviation plug is installed above the control box cover through bolts. The top end of the aviation plug is connected with the control box through wires. After receiving the control signal sent by the control box, the solenoid valve is controlled to open according to the corresponding control, so as to change the spray amount according to different weed densities and working speeds, so that the actual spray amount is more uniform and effective. The control box body is fixed above the solenoid valve through bolts. The three-way connecting piece is installed at the water inlet of the solenoid valve. The spray body is installed at the water outlet of the solenoid valve. The nozzle is installed inside the spray body.

[0013] Further, the variable-width sub-spray rod further comprises a spray rod folding device. The spray rod folding device comprises a side spray rod, a limiting plate, a folding shaft pin, a folding hydraulic cylinder and a folding hydraulic cylinder mounting rack. The folding hydraulic cylinder mounting rack is welded on the telescopic frame and the side spray rod respectively. The two ends of the folding hydraulic cylinder are installed on the folding hydraulic cylinder mounting rack through a cylindrical pin. The side spray rod is in the shape of a right triangle. Two coaxial cylindrical holes are welded on the shorter right angle side and the end of the telescopic frame respectively, and are hingedly installed with the folding shaft pin. The side spray rod can rotate freely around the pin shaft. One end of the limiting plate is welded on the end of the telescopic frame. The other end of the limiting plate extends out of the telescopic frame. When the side spray rod is unfolded to be parallel to the telescopic frame, the limiting plate contacts with the side spray rod, thereby playing a limiting role.

[0014] Further, the variable-width strip spray bar is provided with a spray head mounting rack, which comprises a vertical mounting pipe, a spray bar position adjusting rack, an upper fixing rack, a lower fixing rack and a spray head mounting pipe, one end of the spray bar fixing rack is fixed on the side spray bar or the middle spray bar by bolts, the spray bar position adjusting rack is provided with an arc hole and a fixing hole, and the other end of the spray bar fixing rack is fixed by bolts, the relative position of the two can be changed to change the angle of the spray head assembly relative to the vertical plane, thereby meeting the requirements of different crops for the spray angle, the vertical mounting pipe is sleeved with the cylindrical pipe at the front of the spray bar position adjusting rack and can move up and down, which facilitates the adjustment of the height of the spray head assembly from the crop plants, the cylindrical pipe at the front of the spray bar position adjusting rack is provided with a locking bolt, and the position of the vertical mounting pipe is fixed by the locking bolt after the height is determined, the lower end of the vertical mounting pipe is fixed with the upper fixing rack by bolts, the spray head mounting pipe is square, and is mounted in the middle of the upper fixing rack and the lower fixing rack by bolts, and the spray head assembly is mounted on the spray head mounting pipe.

[0015] Further, the ridge isolation device is installed below the foldable cover, the ridge isolation device comprises an isolation cover, a guide frame, a composite sleeve and a rope wheel assembly, the guide frame comprises a group of parallel guide rods, the guide frame is installed between the lower support rods of the foldable cover, the composite sleeve is sleeved on the guide rods, the composite sleeve comprises a guide pipe and two cable pipes, the composite sleeve is sleeved on the guide rods through the guide pipe, the cable of the rope wheel assembly is sleeved in the cable pipe, the composite sleeve is divided into a positioning composite sleeve and a guide composite sleeve, the isolation cover comprises a foldable layer laid flat at the top and side curtains hanging down at both sides, the rope wheel assembly comprises a guide wheel, a cable and a winding roller, three composite sleeves are evenly installed on both sides of the foldable layer respectively, the composite sleeves are sewn with the side edges of the foldable layer, the guide composite sleeves are installed at both ends of the side edges of the foldable layer, and the positioning composite sleeves are installed in the middle of the side edges, a hanging curtain rod is installed between the parallel guide composite sleeves, the side curtains are hung on the hanging curtain rod, symmetrical guide wheels are installed on the parallel lower support rods at both sides of the foldable cover, and a winding roller is installed above the foldable cover, the winding roller is provided with two wire grooves, the two cables are respectively sleeved in different cable pipes, and the cables are wound on the winding roller after passing through the guide wheels at both ends and being wound on the winding roller from the upper and lower sides of the winding roller respectively, the guide pipe and the cable pipe are both provided with a lock wire, the positioning composite sleeve is fixed with the guide rod through the lock wire on the guide pipe, the cable pipes at the same end of the plurality of foldable layers are fixed with corresponding cables through the lock wires, and a compression spring is installed between the positioning composite sleeve and the guide composite sleeve.

[0016] The present application has the following advantages: (1) the independent digital double-variable spray system is adopted to realize independent adjustment and control of each spray head, especially when variable spraying is performed according to the crop density and the appearance characteristics, independent control of each row of spray heads can ensure accurate variable spraying on each row of crops, which can further improve the spraying uniformity and accuracy, and meanwhile, two sets of variable spraying systems are adopted for the soybean strips and the corn strips respectively, so that the required amount of pesticide can be sprayed according to the different requirements of soybeans and corns.

[0017] (2) For different soybean and corn strip composite planting patterns, the number of soybean and corn rows is different, which leads to inconsistent spray width, etc. A variable-width zonal spray boom is designed, which can adjust the spray width of the soybean spray boom according to the actual planting pattern. At the same time, by changing the position of the wheel installed on the chassis, the wheel spacing of the spray boom can be adjusted, further improving the adaptability.

[0018] (3) A fully enclosed foldable cover is adopted to reduce the drift of pesticide liquid droplets during spraying. Compared with the anti-interference plate used in the existing zonal spray boom, it can further reduce the cross-spraying of herbicides. At the same time, the foldable cover is easy to disassemble, and the supporting rod and flexible cover can be folded and stored, which does not affect the folding of the side spray boom, reduces the transport width of the spray boom, and improves the passability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application.

[0020] Figure 2 is a top view of the present application.

[0021] Figure 3 is a perspective view of the rear side of the present application.

[0022] Figure 4 is a structural composition diagram of the independent digital double-variable spraying system of the present application.

[0023] Figure 5 is a side view of the spray head assembly of the present application.

[0024] Figure 6 is a perspective view of the variable-width zonal spray boom of the present application.

[0025] Figure 7 is a perspective view of the present application Figure 6 is an enlarged view of position A.

[0026] Figure 8 is a perspective view of the spray head mounting rack of the present application.

[0027] Figure 9 is a perspective view of the foldable cover of the present application.

[0028] Figure 10 is a partial perspective view of the foldable cover of the present application.

[0029] Figure 11 is a perspective view of the row spacing device of the present application.

[0030] Figure 12 is a perspective view of the winding roller of the present application.

[0031] Figure 13 Figure 1 is a perspective view of the isolation cover of the present application.

[0032] Figure 14 Figure 2 is a perspective view of the composite cover of the present application.

[0033] Figure 1 is a perspective view of the isolation cover of the present application. DETAILED DESCRIPTION

[0034] Example 1: As shown in Figure 1, the variable width spraying rod 1 is connected to the spraying rod lifting mechanism 2, which is connected to the walking assembly 3. The steering wheel 4 is connected to the variable width spraying rod 1. The seat 5 is connected to the chassis 7. The chemical tank 13 is connected to the power supply 12. The electric push rod 14 is connected to the variable width spraying rod 1. The side support rod 15 is connected to the variable width spraying rod 1. The recess 16 is connected to the variable width spraying rod 1. The engine 17 is connected to the variable width spraying rod 1. The seat 18 is connected to the variable width spraying rod 1. The diaphragm pump 19 is connected to the variable width spraying rod 1. The spray valve group 20 is connected to the variable width spraying rod 1. The camera mounting bracket 21 is connected to the variable width spraying rod 1. The industrial camera 22 is connected to the variable width spraying rod 1. The control box 23 is connected to the variable width spraying rod 1. The foldable cover 24 is connected to the variable width spraying rod 1. The aviation plug 25 is connected to the variable width spraying rod 1. The control box cover 26 is connected to the variable width spraying rod 1. The three-way connector 27 is connected to the variable width spraying rod 1. The electromagnetic valve front mounting bracket 28 is connected to the variable width spraying rod 1. The electromagnetic valve rear mounting bracket 29 is connected to the variable width spraying rod 1. The spray body 30 is connected to the variable width spraying rod 1. The nozzle 31 is connected to the variable width spraying rod 1. The electromagnetic valve 32 is connected to the variable width spraying rod 1. The control box body 33 is connected to the variable width spraying rod 1. The spray head circuit board 34 is connected to the variable width spraying rod 1. The hexagonal stud 35 is connected to the variable width spraying rod 1. The width adjusting device 36 is connected to the variable width spraying rod 1. The spray rod folding device 37 is connected to the variable width spraying rod 1. The spray head mounting bracket 38 is connected to the variable width spraying rod 1. The spray head assembly 39 is connected to the variable width spraying rod 1. The side spraying rod 40 is connected to the variable width spraying rod 1. The limit plate 41 is connected to the variable width spraying rod 1. The folding shaft pin 42 is connected to the variable width spraying rod 1. The folding hydraulic cylinder 43 is connected to the variable width spraying rod 1. The folding hydraulic cylinder mounting bracket 44 is connected to the variable width spraying rod 1. The telescopic bracket 45 is connected to the variable width spraying rod 1. The middle spraying rod 46 is connected to the variable width spraying rod 1. The hydraulic cylinder mounting bracket 47 is connected to the variable width spraying rod 1. The hydraulic cylinder 48 is connected to the variable width spraying rod 1. The folding cover front mounting bracket 49 is connected to the variable width spraying rod 1. The folding cover rear mounting bracket 50 is connected to the variable width spraying rod 1. The vertical mounting pipe 51 is connected to the variable width spraying rod 1. The cylindrical pipe 52 is connected to the variable width spraying rod 1. The spray rod position adjusting bracket 53 is connected to the variable width spraying rod 1. The spray rod fixing bracket 54 is connected to the variable width spraying rod 1. The upper fixing bracket 55 is connected to the variable width spraying rod 1. The lower fixing bracket 56 is connected to the variable width spraying rod 1. The spray head mounting pipe 57 is connected to the variable width spraying rod 1. The spray head mounting pipe 58 is connected to the variable width spraying rod 1. The locking bolt 59 is connected to the variable width spraying rod 1. The lower fixing block 60 is connected to the variable width spraying rod 1. The upper fixing block 61 is connected to the variable width spraying rod 1. The fixed cylindrical pipe 62 is connected to the variable width spraying rod 1. The rear shell body 63 is connected to the variable width spraying rod 1. The side shell body 64 is connected to the variable width spraying rod 1. The cylindrical support rod 65 is connected to the variable width spraying rod 1. The front shell body 66 is connected to the variable width spraying rod 1. The lower support rod 67 is connected to the variable width spraying rod 1. The live plug 68 is connected to the variable width spraying rod 1. The reinforced support rod 69 is connected to the variable width spraying rod 1. The angle fixing block 70 is connected to the variable width spraying rod 1. The fixing buckle 71 is connected to the variable width spraying rod 1. The rotating sleeve ring 72 is connected to the variable width spraying rod 1. The folding layer 73 is connected to the variable width spraying rod 1. The side curtain 74 is connected to the variable width spraying rod 1. The lengthened curtain 75 is connected to the variable width spraying rod 1. The guide bracket 76 is connected to the variable width spraying rod 1. The composite cover 77 is connected to the variable width spraying rod 1. The guide wheel 78 is connected to the variable width spraying rod 1. The wire roller 79 is connected to the variable width spraying rod 1. The cable 80 is connected to the variable width spraying rod 1. The hand wheel 81 is connected to the variable width spraying rod 1. The compression spring 82 is connected to the variable width spraying rod 1. The guide pipe 83 is connected to the variable width spraying rod 1. The cable pipe 1 84 is connected to the variable width spraying rod 1. The cable pipe 2 85 is connected to the variable width spraying rod 1.

[0034] DETAILED DESCRIPTION Figure 1 and Figure 2As shown, the embodiment provides a variable spraying machine for soybean and corn strip planting, which comprises an independent digital variable spraying system, a variable-width strip spraying boom 1, a spraying boom lifting mechanism 2 and a walking assembly 3. The spraying boom lifting mechanism 2 adopts a parallelogram structure, and is connected with the walking assembly 3 and the variable-width strip spraying boom 1 at both ends through cylindrical pins, and can rotate freely around the cylindrical pins. By controlling the extension and retraction of the electric push rod 14 of the spraying boom lifting mechanism 2, the variable-width strip spraying boom 2 is driven to move up and down, so as to change the height of the spray head from the crops. The parallelogram structure of the spraying boom lifting mechanism 2 can ensure that the variable-width strip spraying boom 1 is always in a vertical plane. The walking assembly 3 comprises a steering wheel 4, a seat 5, a chassis 7, wheels 9, an engine 17 and the like. The wheel mounting bracket 8 is fixed with the chassis 7 by bolts, and a plurality of mounting holes are formed on the chassis 7. By connecting the wheel mounting bracket 8 with different mounting holes, the wheel spacing of the whole vehicle can be changed to meet different soybean and corn strip planting modes.

[0035] As shown, Figures 1-5 The independent digital variable spraying system comprises an industrial camera 22, a camera mounting bracket 21, a tank 1 13, a tank 2 6, a diaphragm pump 1 19, a diaphragm pump 2 11, a spray valve group 1 20, a spray valve group 2 10, a control box 23, a power supply 12 and a spray head assembly 39. The industrial camera 22 is fixed on the camera mounting bracket 23 by bolts, and is mainly used to obtain image information of the crops in the field. After computer processing, the weed density grade is obtained, and the actual spraying amount information of each spray head is determined through a decision model and sent to the control box 23. The tank 1 13, the diaphragm pump 1 19 and the spray valve group 1 20, the tank 2 6, the diaphragm pump 2 11 and the spray valve group 2 10, the control box 23 and the power supply 12 are respectively installed on the chassis 7 of the walking assembly 3, and form two independent spraying systems for corn and soybeans respectively, and variable spraying is performed on the corn strip and the soybean strip. The control box 23 and the power supply 12 share one set, and the control box 23 integrates a Beidou positioning module, which can obtain the real-time working speed of the spraying machine. The spray valve group integrates a filter, a pressure sensor, a flow sensor, a pressure stabilizing tank and an overflow valve, which are used to obtain working information such as pressure and flow, stabilize pipeline pressure and protect pipeline safety, etc. The tank, the filter, the diaphragm pump, the spray valve group and the spray head assembly are connected in sequence by pipelines, so that the liquid flows from the tank to the spray head assembly 39.

[0036] Further, as shown, Figure 5As shown, the spray head assembly includes an aviation plug 25, a control box cover 26, a tee connector 27, an electromagnetic valve front mounting bracket 28, an electromagnetic valve rear mounting bracket 29, a spray body 30, a nozzle 31, an electromagnetic valve 32, a control box body 33, and a spray head circuit board 34. The spray head circuit board 34 is installed below the control box cover 26 through a hexagonal stud 35, the bottom end of the aviation plug 25 is installed above the control box cover 26 through a bolt, the top end of the aviation plug 25 is connected with the control box 23 through a wire, and the spray head circuit board 34 receives the control signal (PWM frequency and duty ratio) sent by the control box, and controls the electromagnetic valve to open according to the corresponding control (PWM frequency and duty ratio), so that the spray amount can be changed according to different weed density and operation speed, and the actual spray amount is more uniform and effective. The control box body 33 is fixed above the electromagnetic valve 32 through a bolt, the tee connector 27 is installed at the water inlet of the electromagnetic valve 32, the spray body 30 is installed at the water outlet of the electromagnetic valve 32, the nozzle 31 is installed inside the spray body 30, the electromagnetic valve front mounting bracket 28 is fixed at the bottom of the electromagnetic valve 32 through a screw, and the electromagnetic valve front mounting bracket 28 and the electromagnetic valve rear mounting bracket 29 fix the spray head assembly 39 on the square tube of the spray head mounting pipe 58 through a bolt.

[0037] During operation, the pesticide solution is sucked out of the pesticide tank under the action of the diaphragm pump, and reaches the pump body through the filter. The pressurized pesticide solution reaches the variable spray head after passing through the pressure stabilizer, the pressure sensor, and the flow sensor. The industrial camera shoots the field crop image in real time, obtains the spray amount decision information after image processing algorithm processing, and sends it to the control box. After the control box receives the spray amount information, it sends corresponding control signals (PWM frequency and duty ratio) to each spray head assembly according to the speed, spray amount, and other information. The spray head circuit board 34 of the spray head assembly receives the control signal and controls the electromagnetic valve to work, realizing independent variable spraying of each route.

[0038] As shown in Figures 6-10 As shown, the variable width and width strip spraying boom includes a width adjusting device 36, a spraying boom folding device 37, a spray head mounting bracket 38, and a foldable cover 24. The width adjusting device 36 includes a hydraulic cylinder 48, an extension frame 45, a hydraulic cylinder mounting bracket 47, and an intermediate spraying boom 46. Two hydraulic cylinder mounting brackets 47 are respectively welded to the extension frame 45 and the intermediate spraying boom 46. The two ends of the hydraulic cylinder 48 are respectively installed on the hydraulic cylinder mounting brackets 47 through cylindrical pins. The hydraulic cylinder 48 can freely rotate around the cylindrical pins. The extension frame 45 is sleeved on the intermediate spraying boom 46 and can freely extend and retract. During operation, the distance of the extension frame 45 inserted into the intermediate spraying boom 46 is changed by controlling the extension and retraction of the hydraulic cylinder 48, the spraying width of the whole machine is changed, and the wheel track adjustment can meet different soybean and corn strip planting patterns.

[0039] Further, the spray bar folding device 37 comprises a side spray bar 40, a limiting plate 41, a folding shaft pin 42, a folding hydraulic cylinder 43, and a folding hydraulic cylinder mounting frame 44. The folding hydraulic cylinder mounting frame 44 is welded on the telescopic frame 45 and the side spray bar 40 respectively. The two ends of the folding hydraulic cylinder 43 are mounted on the folding hydraulic cylinder mounting frame 44 through a cylindrical pin respectively. The side spray bar 40 is in the shape of a right triangle. Two coaxial cylindrical holes are welded on the shorter right angle side and the end of the telescopic frame 45 respectively, and are hingedly mounted with the folding shaft pin 42. The side spray bar 40 can rotate freely around the pin shaft. One end of the limiting plate 41 is welded on the end of the telescopic frame 45. The other end of the limiting plate 41 extends out of the telescopic frame 45. When the side spray bar 40 is unfolded to be parallel to the telescopic frame 45, the limiting plate 41 contacts with the side spray bar 40, thereby playing a limiting role. During operation, the folding and unfolding of the side spray bar 40 is realized by controlling the extension and contraction of the folding hydraulic cylinder 43.

[0040] Further, as shown in Figure 8 , the spray head mounting frame 38 comprises a folding cover rear mounting frame 50, a vertical mounting pipe 51, a spray bar position adjusting frame 53, a spray bar fixing frame 54, an upper fixing frame 56, a lower fixing frame 57, and a spray head mounting pipe 58. One end of the spray bar fixing frame 54 is fixed on the side spray bar 40 or the middle spray bar 46 through bolts. The spray bar position adjusting frame 53 is provided with an arc hole 55 and a fixing hole, and is fixed with the other end of the spray bar fixing frame 54 through bolts. Changing the relative position of the two can change the angle of the spray head assembly 39 relative to the vertical plane, thereby meeting the requirements of different crops for the spray angle. The folding cover rear mounting frame 50 is welded above the spray bar position adjusting frame 53, and is used for fixing the foldable cover 24. The vertical mounting pipe 51 is sleeved with a cylindrical pipe 52 at the front of the spray bar position adjusting frame 53, and can move up and down, thereby facilitating the adjustment of the height of the spray head assembly 39 from the crop plants. The cylindrical pipe 52 at the front of the spray bar position adjusting frame 53 is provided with a locking bolt 59. After the height is determined, the position of the vertical mounting pipe 51 is fixed through the locking bolt 59. The lower end of the vertical mounting pipe 51 is fixed with the upper fixing frame 56 through bolts. The spray head mounting pipe 58 is in the shape of a square, and is mounted in the middle of the upper fixing frame 56 and the lower fixing frame 57 through bolts. During operation, since the heights of corn and soybean are different, the height of the spray head from the ground is also different. By adjusting the position of the vertical mounting pipe 51 relative to the spray bar position adjusting frame 53, the height of the spray head from the ground is changed, and is fixed through the locking bolt 59, so as to obtain the best spray height.

[0041] Further, as shown in Figure 9 and Figure 10As shown, the foldable cover includes a lower fixed block 60, an upper fixed block 61, a fixed circular tube 62, a rear shell 63, a side shell 64, a front shell 66, a lower support rod 67, a live plug 68, a reinforcing support rod 69, an angle fixed block 70, a fixed buckle 71, a rotating collar 72, a side support rod 15 and a foldable cover front mounting bracket 49, the fixed circular tube 62 is fixed between the foldable cover front mounting bracket 49 and the foldable cover rear mounting bracket 50 by bolts, the upper fixed block 61 and the lower fixed block 60 are fixed on the cover fixed circular tube 62 by bolts, a groove 16 is formed in the lower part of the lower fixed block 60, a circular hole is formed in the upper end of the side support rod 15, the side support rod 15 is installed in the groove 16 of the lower fixed block 60 through a cylindrical pin and can rotate freely around the cylindrical pin in the groove 16, one end of the rotating collar 72 has a cylindrical hole and is sleeved and fixed on the middle lower part of the side support rod 15, the other end of the rotating collar 72 is U-shaped and has a cylindrical hole, the upper end of the reinforcing support rod 69 also has a cylindrical hole, the two are hinged through a cylindrical pin shaft and can rotate freely around the cylindrical pin, the lower end of the reinforcing support rod 69 is installed in the live plug 68, the two are in interference fit, the live plug 68 has four fixing holes, the lower through hole is sleeved and fixed with the lower support rod 67, the upper two fixing holes are in interference fit with the two reinforcing support rods 69 and are fixed; the angle fixed block 70 is in interference fit with the side support rod 15 and the lower support rod 67, so that the lower support rod 67 and the two side support rods 15 form a triangle, so as to ensure that the foldable cover 24 is triangular in shape in the unfolded state; the upper parts of the front shell 66 and the rear shell 63 are fixed on the fixed circular tube 62, the lower parts of the front shell 66 and the rear shell 63 are fixed on the side support rod 15 through the fixed buckle 71, the bottom parts of the front shell 66 and the rear shell 63 respectively have a cylindrical support rod 65, so as to ensure that the front and rear shells are not bent in the unfolded state, and the side shell 64 is fixed on the side support rod 15.

[0042] In the working state, each component is normally installed and connected, the front shell 66, the rear shell 63 and the side shell 64 form a "three-prism space", the spray droplets can only reach the plants from the lower part of the cover, the drift of the spray droplets is reduced, and the cross-spray is avoided; when in the non-working state, the connection between the side support rod 15 and the live plug 68 and the connection between the angle fixed block 70 and the lower support rod 67 are disconnected, at this time, the side support rod 15 is folded upward to be parallel to the fixed circular tube 62, the flexible front shell 66, the rear shell 63 and the side shell 64 are rolled up, and the folding and transportation of the spray rod are facilitated.

[0043] The soybean and corn belt-shaped composite variable zoning spray boom sprayer provided by the application has the following specific working process in actual application:

[0044] (1) Before operation: According to the soybean and corn compound planting mode, adjust the wheel track and spray boom width, so that the wheels do not press the crops, and the spray belt can cover the soybean belt and the spray belt respectively; operate the folding hydraulic cylinder to make it elongate until the side spray boom is unfolded and parallel to the middle spray boom; install and fix the side support rod, the reinforced support rod and the lower support rod of the foldable cover shell, unfold the front shell body, the rear shell body and the side shell body, so that the foldable cover shell presents a "three-prism space", and the mist droplets can only be sprayed from the bottom of the cover shell, ensuring that the soybean spray belt and the corn spray belt are completely isolated.

[0045] (2) During operation: turn on the power, the liquid medicine is sucked out from the medicine tank under the action of the diaphragm pump, and reaches the pump body through the filter, the pressurized liquid reaches the variable spray head after passing through the pressure stabilizer, the pressure sensor and the flow sensor; the industrial camera shoots the field crop image in real time, and obtains the spray amount decision information after image processing algorithm processing, and sends it to the control box; after the control box receives the spray amount information, it sends corresponding control signals (PWM frequency and duty cycle) to each spray head assembly combined with speed, spray amount and other information, and the spray head circuit board 34 of the spray head assembly receives the control signal to control the electromagnetic valve to work, realizing independent variable spraying of each road.

[0046] (3) After operation: separate the reinforced support rod, the lower support rod and the side support rod of the foldable cover shell at the angle fixing block and the live plug joint, fold the flexible front shell body, the rear shell body and the side shell body, which is convenient for subsequent spray boom folding; operate the folding hydraulic cylinder to make it contract until the side spray boom is folded, reducing the overall vehicle width and improving the transportation passability.

[0047] The soybean and corn compound planting belt variable spray boom sprayer can change the spray amount of the soybean belt and the corn belt in real time according to the growth state and demand of soybeans and corn, realize precise and efficient spraying of pesticides, and improve the adaptability of the spray boom sprayer to different planting modes.

[0048] Example 2: The spray range of the liquid medicine sprayed by the spray boom sprayer is large, although a precise spraying system can be used to make the liquid medicine sprayed on the crops as much as possible, but there is still a problem that the liquid medicine sprayed in the ridge will directly fall to the ground, causing soil pollution.

[0049] To solve this problem, the ridge isolation device is provided, which can shield the ground between the crop ridges, reduce the amount of sprayed liquid medicine falling to the ground between the ridges, and reduce the pollution of pesticides to the soil.

[0050] Specifically, as Figures 11-14As shown in the embodiment 1 spray machine, the foldable housing 24 is provided with a row spacing device below the foldable housing 24, the row spacing device comprises a spacing cover, a guide frame 76, a composite sleeve 77 and a sheave assembly, the guide frame 76 comprises a set of parallel guide rods, the guide frame 76 is installed between the lower support rods 67 of the foldable housing 24, and the composite sleeve 77 is sleeved on the guide rods.

[0051] As shown in the embodiment 1 spray machine, the foldable housing 24 is provided with a row spacing device below the foldable housing 24, the row spacing device comprises a spacing cover, a guide frame 76, a composite sleeve 77 and a sheave assembly, the guide frame 76 comprises a set of parallel guide rods, the guide frame 76 is installed between the lower support rods 67 of the foldable housing 24, and the composite sleeve 77 is sleeved on the guide rods. Figure 14 The composite sleeve 77 is divided into a positioning composite sleeve 77 and a guide composite sleeve 77 according to functions, and the sheave assembly comprises two groups, and each group is installed on the guide frame 76 on one side.

[0052] The spacing cover comprises a flat folding layer 73 on the top and side curtains 74 on the two sides, the sheave assembly comprises a guide wheel 78, a cable 80 and a winding roller 79, three composite sleeves 77 are evenly installed on the two sides of the folding layer 73 respectively, the composite sleeves 77 are sewn with the side edges of the folding layer 73, the guide composite sleeves 77 are installed at the two ends of the side edges of the folding layer 73, and the positioning composite sleeves 77 are installed in the middle of the side edges, a hanging curtain rod is installed between the parallel guide composite sleeves 77, the side curtains 74 are hung on the hanging curtain rod, symmetrical guide wheels 78 are installed on the parallel lower support rods 67 on the two sides of the foldable housing 24, and the winding roller 79 is installed above the foldable housing 24, the winding roller 79 is provided with two wire grooves, the two cables 80 are sleeved in different cable pipes respectively, and the cables 80 are wound on the winding roller 79 from the upper and lower sides of the winding roller 79 after passing through the guide wheels 78 at the two ends, the guide pipe 83 and the cable pipe are provided with a wire lock respectively, the positioning composite sleeve 77 is fixed with the guide rod through the wire lock on the guide pipe 83, and the cable pipes at the same end of the plurality of folding layers 73 are fixed with the corresponding cables 80 through the wire locks.

[0053] Specifically, the two cables 80 are sleeved into the corresponding cable pipe one 84 and cable pipe two 85 from the two ends of the guide rod, that is, the left cable 80 is sleeved in the cable pipe one 84, and the right cable 80 is sleeved in the cable pipe two 85, in order to pull the guide composite sleeve 77 through the cable 80, the left cable 80 sleeved in the cable pipe one 84 of the right guide composite sleeve 77 is fixed through the wire lock, the right cable 80 sleeved in the cable pipe two 85 of the left guide composite sleeve 77 is fixed through the wire lock, and the compression spring 82 is installed between the positioning composite sleeve 77 and the guide composite sleeve 77.

[0054] Rotating the winding roller 79, the cable 80 on both sides is wound on the winding roller 79 at the same time, pulling the guide composite sleeve 77 to move to the center of the folding layer 73, making the folding layer 73 contract, reducing the width of the isolation cover, adapting to the narrower ridge, when the winding roller 79 is loosened, the compression spring 82 will expand the guide composite sleeve 77 on both sides, expanding the width of the isolation cover, so as to adapt to the wider ridge, the length of the cable 80 wound on the winding roller 79 can control the width of the isolation cover, and adapt to different ridge widths.

[0055] Further, as shown in Figure 12 and 13 , the rope wheel assembly is installed on the guide frame 76 on both sides, so two side-by-side winding rollers 79 are installed above, and the two winding rollers 79 are connected by a fixed shaft, and a hand wheel 81 is also installed on the winding roller 79, and the width of the isolation cover is controlled by rotating the hand wheel 81.

[0056] According to the height of the crop plants, the lengthening curtain 75 can also be installed below the side curtain 74 to adapt to different heights of crops and ensure effective shielding of the ridge.

[0057] The above only describes the preferred embodiments of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A variable-width strip-division spraying boom for strip-division variable-rate spraying of a soybean-corn strip, comprising a variable-rate spraying system, a variable-width strip-division spraying boom (1), a spraying boom lifting mechanism (2) and a traveling assembly (3), the spraying boom lifting mechanism (2) being installed between the traveling assembly (3) and the variable-width strip-division spraying boom (1), characterized in that, The variable-width strip spraying boom (1) comprises width adjusting devices (36), which comprise hydraulic cylinders (48), telescopic frames (45), hydraulic cylinder mounting frames (47) and intermediate spraying booms (46), two hydraulic cylinder mounting frames (47) are welded to the telescopic frame (45) and the intermediate spraying boom (46) respectively, both ends of the hydraulic cylinder (48) are mounted on the hydraulic cylinder mounting frames (47) through cylindrical pins respectively, the hydraulic cylinder (48) can rotate freely around the cylindrical pins, the telescopic frame (45) is sleeved in the intermediate spraying boom (46) and can freely extend and retract, the distance of the telescopic frame (45) inserted into the intermediate spraying boom (46) is changed by controlling the extension and retraction of the hydraulic cylinder (48), the spraying width of the whole machine is changed, and different soybean and corn strip composite planting modes can be met by cooperating with the wheel track adjustment; The variable-width strip spraying boom (1) is provided with a spraying boom fixing frame (54), one end of the spraying boom fixing frame (54) is fixed on the side spraying boom (40) or the intermediate spraying boom (46) through bolts, the other end of the spraying boom fixing frame (54) is fixed and installed with a spraying boom position adjusting frame (53) through bolts, a folding cover rear mounting frame (50) is welded above the spraying boom position adjusting frame (53) and is used for fixing a foldable cover (24); The foldable cover (24) comprises a lower fixing block (60), an upper fixing block (61), a fixing round pipe (62), a rear shell (63), a side shell (64), a front shell (66), a lower support rod (67), a movable plug joint (68), a reinforcing support rod (69), an angle fixing block (70), a fixing buckle (71), a rotating sleeve ring (72), a side support rod (15) and a foldable cover front mounting frame (49), the fixing round pipe (62) is fixed between the foldable cover front mounting frame (49) and the foldable cover rear mounting frame (50) by bolts, the upper fixing block (61) and the lower fixing block (60) are fixed on the cover fixing round pipe (62) by bolts, a groove (16) is formed in the lower fixing block (60), a circular hole is formed in the upper end of the side support rod (15), the side support rod (15) is installed in the groove (16) of the lower fixing block (60) through a cylindrical pin and can rotate freely around the cylindrical pin in the groove (16), one end of the rotating sleeve ring (72) is provided with a cylindrical hole and is sleeved and fixed on the middle lower position of the side support rod (15), the other end of the rotating sleeve ring (72) is U-shaped and is provided with a cylindrical hole, the upper end of the reinforcing support rod (69) is also provided with a cylindrical hole, the two are hinged through a cylindrical pin shaft and can rotate freely around the cylindrical pin, the lower end of the reinforcing support rod (69) is installed in the movable plug joint (68) in interference fit, the movable plug joint (68) has four fixing holes, the lower through hole is sleeved and fixed with the lower support rod (67), the upper two fixing holes are in interference fit with the two reinforcing support rods (69) respectively and are fixed; the angle fixing block (70) is in interference fit with the side support rod (15) and the lower support rod (67) respectively, so that the lower support rod (67) and the two side support rods (15) form a triangle, so as to ensure that the foldable cover (24) is in a triangular shape in the unfolded state; the upper parts of the front shell (66) and the rear shell (63) are fixed on the fixing round pipe (62) respectively, the lower parts of the front shell (66) and the rear shell (63) are fixed on the side support rod (15) through the fixing buckle (71), the bottom parts of the front shell (66) and the rear shell (63) are respectively provided with a cylindrical support rod (65), so as to ensure that the front and rear shells (63) are not bent in the unfolded state, and the side shell (64) is fixed on the side support rod (15).

2. The strip-tillage variable-rate boom sprayer for soybean and corn strip interplanting according to claim 1, characterized in that, The spray rod lifting mechanism (2) adopts a parallel four-bar structure, and the two ends are respectively connected with the walking assembly (3) and the variable-width sub-spray rod (1) through cylindrical pins and can rotate freely around the cylindrical pins. By controlling the extension and retraction of the electric push rod (14) of the spray rod lifting mechanism (2), the variable-width sub-spray rod (1) is driven to move up and down, so as to change the height of the spray head from the crops, and the parallel four-bar structure of the spray rod lifting mechanism (2) can ensure that the variable-width sub-spray rod (1) is always in a vertical plane.

3. The soybean-corn strip interplanting zonal variable spray boom sprayer according to claim 1, characterized in that, The variable spray system comprises an industrial camera (22), a camera mounting rack (21), a medicine box I (13), a medicine box II (6), a diaphragm pump I (19), a diaphragm pump II (11), a spray valve group I (20), a spray valve group II (10), a control box (23), a power supply (12) and a spray head assembly (39), the camera mounting rack (21) is mounted on the variable width and strip spray rod (1), the industrial camera (22) is fixed on the camera mounting rack (21) by bolts, which is mainly used for obtaining image information of field crops, and after computer processing, weed density grade is obtained, and through a decision model, actual spray amount information of each spray head is determined and sent to the control box (23); the medicine box I (13), the diaphragm pump I (19) and the spray valve group I (20), the medicine box II (6), the diaphragm pump II (11) and the spray valve group II (10), the control box (23) and the power supply (12) are respectively mounted on the chassis (7) of the walking assembly (3), and two sets of independent spray systems for corn and soybeans are formed, and variable spray is carried out on corn strips and soybean strips.

4. The soybean and corn strip belt complex planting and belt variable spray boom sprayer according to claim 1, characterized in that, The variable width and strip spray rod (1) further comprises a spray rod folding device (37), the spray rod folding device (37) comprises a side spray rod (40), a limiting plate (41), a folding shaft pin (42), a folding hydraulic cylinder (43) and a folding hydraulic cylinder mounting rack, the folding hydraulic cylinder mounting rack is welded on the telescopic frame (45) and the side spray rod (40) respectively, the two ends of the folding hydraulic cylinder (43) are respectively mounted on the folding hydraulic cylinder mounting rack through cylindrical pins, the side spray rod (40) is in the shape of a right triangle, two coaxial cylindrical holes are welded on the shorter right angle side and the end of the telescopic frame (45) respectively, and are hingedly mounted with the folding shaft pin (42), the side spray rod (40) can freely rotate around the pin shaft, one end of the limiting plate (41) is welded on the end of the telescopic frame (45), and the other end of the limiting plate (41) extends out of the telescopic frame (45), when the side spray rod (40) is unfolded to be parallel to the telescopic frame (45), the limiting plate (41) contacts the side spray rod (40), thereby limiting the side spray rod (40).

5. The soybean and corn strip belt complex planting and belt variable spray boom sprayer according to claim 1, characterized in that, Variable width strip spray bar (1) on the installation of the spray head mounting rack (38), spray head mounting rack (38) includes vertical installation pipe (51), spray bar position adjusting frame (53), upper fixed frame (55), lower fixed frame (56) and spray head mounting pipe (58), spray bar fixed frame (54) one end is fixed by bolt on side spray bar (40) or middle spray bar (46), spray bar position adjusting frame (53) is opened with circular arc hole and fixed hole, and is fixed with the other end of spray bar fixed frame (54) through bolt, the relative position of the two can change the angle of spray head assembly (39) relative to vertical plane, so as to meet the different crops on the spray angle requirement, vertical installation pipe (51) and cylindrical pipe (52) of spray bar position adjusting frame (53) front part sleeve and can move up and down, the height of spray head assembly (39) from crop plant is adjusted conveniently, cylindrical pipe (52) of spray bar position adjusting frame (53) front part is installed locking bolt (59), the height is determined after through locking bolt (59) fixed vertical installation pipe (51) position, vertical installation pipe (51) lower end is fixed with upper fixed frame (55) through bolt, spray head mounting pipe (58) is square, is installed in the middle of upper fixed frame (55) and lower fixed frame (56) through bolt, spray head assembly (39) is installed on spray head mounting pipe (58).

6. The soybean-corn strip complex planting and strip variable spray boom spraying machine according to claim 3, characterized in that, The spray head assembly (39) includes an aviation plug (25), a control box cover (26), a tee connector (27), a spray body (30), a nozzle (31), a solenoid valve (32), a control box body (33) and a spray head circuit board (34), the spray head circuit board (34) is installed below the control box cover (26) through a hexagonal stud (35), the bottom end of the aviation plug (25) is installed above the control box cover (26) through a bolt, the top end of the aviation plug (25) is connected with the control box (23) through a wire, after receiving the control signal sent by the control box (23), the spray head circuit board (34) controls the solenoid valve (32) to open according to the corresponding control, so as to change the spray amount according to different weed density and operation speed, so that the actual spray amount is more uniform and effective; the control box body (33) is fixed above the solenoid valve (32) through a bolt, the tee connector (27) is installed at the water inlet of the solenoid valve (32), the spray body (30) is installed at the water outlet of the solenoid valve (32), and the nozzle (31) is installed inside the spray body (30).

7. The soybean-corn strip complex planting and strip variable spray boom spraying machine according to claim 1, characterized in that, The foldable cover (24) is provided with a row spacing device below, which comprises a spacing cover, a guide frame (76), a composite sleeve (77) and a rope wheel assembly. The guide frame (76) comprises a set of parallel guide rods, which are installed between the lower support rods (67) of the foldable cover (24). The composite sleeve (77) is sleeved on the guide rods and comprises a guide tube (83) and two cable tubes. The composite sleeve (77) is sleeved on the guide rods through the guide tube (83), and the cable (80) of the rope wheel assembly is sleeved in the cable tube. The composite sleeve (77) is divided into a positioning composite sleeve (77) and a guide composite sleeve (77). The spacing cover comprises a top flat folding layer (73) and two side drop side curtains (74). The rope wheel assembly comprises a guide wheel (78), a cable (80) and a winding roller (79). Three composite sleeves (77) are evenly installed on both sides of the folding layer (73), and the composite sleeves (77) are sewn with the side edges of the folding layer (73). The guide composite sleeves (77) are installed at both ends of the side edges of the folding layer (73), and the positioning composite sleeves (77) are installed in the middle of the side edges. A hanging curtain rod is installed between the parallel guide composite sleeves (77), and the side curtains (74) are hung on the hanging curtain rod. Symmetrical guide wheels (78) are installed on the parallel lower support rods (67) on both sides of the foldable cover (24), and a winding roller (79) is installed above the foldable cover (24). The winding roller (79) is provided with two wire grooves. Two cables (80) are respectively sleeved in different cable tubes, and the cables (80) are wound on the winding roller (79) from the upper and lower sides of the winding roller (79) after passing through the guide wheels (78) at both ends. Locking wires are arranged on the guide tube (83) and the cable tube. The positioning composite sleeve (77) is fixed with the guide rod through the locking wire on the guide tube (83), and the cable tube of the folding layer (73) at the same end is fixed with the corresponding cable (80) through the locking wire. The positioning composite sleeve (77) and the guide composite sleeve (77) are provided with a compression spring (82).

8. The soybean-corn strip complex planting zonal variable boom sprayer according to claim 7, characterized in that, A hand wheel (81) is also installed on the winding roller (79), which controls the width of the spacing cover by rotating.

9. The soybean-corn strip complex planting zonal variable boom sprayer according to claim 7, characterized in that, An extension curtain (75) is additionally installed below the side curtain (74) to adapt to crops of different heights.

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