A foliar fertilizer spraying device for soybean planting

Abstract

The present application relates to the technical field of agricultural machinery, and particularly relates to a soybean planting foliar fertilizer spraying device, which comprises a swing support, a plurality of movable spray rods, a pair of transmission pipelines, a driving device and a pressure maintaining module, the swing support is arranged in the inner cavity of the vehicle frame main body, the plurality of movable spray rods are arranged on the swing support, the inner cavities of the movable spray rods are communicated with the inner cavity of the swing support, and the movable spray rods are used for spraying foliar fertilizer solution, the pair of transmission pipelines are arranged on the vehicle frame main body and used for connecting the water tank of the vehicle frame main body and the inner cavity of the swing support, the driving device is fixedly arranged on the vehicle frame main body and connected with the swing support, and the driving device is used for driving the swing support to reciprocating swing, and the pressure maintaining module is arranged on the water tank and used for maintaining the stable pressure environment of the inner cavity of the water tank. The device sets the swing support and the movable spray rod in the inner cavity of the movable vehicle frame main body, realizes the purpose of moving and applying foliar fertilizer to the back of crop leaves, and solves the problem of high foliar fertilizer cost in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, in particular to a leaf fertilizer spraying device for soybean planting. BACKGROUND

[0002] In the process of soybean planting, in order to promote flower bud differentiation and pollen tube elongation, leaf topdressing at the initial flowering stage is crucial. Traditionally, this work relies mainly on the operation of workers holding agricultural manual sprayers: when topdressing, workers need to hold the movable spray rod so that the atomizing spray end sweeps over the upper side of the plant, and the leaf fertilizer solution is sprayed on the soybean leaves. However, this method has significant drawbacks, i.e. the sprayed fertilizer solution mainly covers the front of the leaves; since the number of stomata on the front of the soybean leaves is much less than on the back, the absorption efficiency of the crop to the fertilizer solution is low, resulting in waste of resources and limited yield increase. With the intelligent development of agricultural power machinery, the use of intelligent agricultural power machinery to replace manual work not only plays a significant role in liberating manpower and improving work efficiency, but also can precisely spray the fertilizer solution on the back of the leaves by intelligently adjusting the spraying angle and efficiency, thereby greatly improving the absorption efficiency of the crop to the fertilizer solution.

[0003] For example, a leaf fertilizer spraying device and application method are proposed in the prior art, with the publication number CN118435769B. The device is arranged on the plough below the plant. During leaf topdressing, the fertilizer solution in the water tank is pressed into the sleeve. When the air temperature rises, the gas in the gas pocket expands, pushing the piston upwards. The piston moves upwards, simultaneously driving the lifting piece upwards, which in turn drives the screw rod to rotate, and the rotating tube also rotates. At the same time, the upward movement of the piston also presses the solution into the screw rod. The solution enters the rotating tube from the screw rod, and is finally sprayed out through the nozzle. This allows the fertilizer solution to be sprayed from bottom to top, and the fertilizer solution can better adhere to the back of the leaves, effectively improving the absorption rate of the plant to the leaf fertilizer solution.

[0004] However, for the grower, when using the above-mentioned leaf fertilizer spraying device for page topdressing, it is necessary to arrange a large area of pipeline and spraying device on the surface of the plough, resulting in an increase in the cost of leaf topdressing. Moreover, since the spraying device is located on the underside of the plant, when a spraying device fails due to a rupture, it is difficult to be discovered in time. SUMMARY

[0005] To solve the technical problems existing in the prior art, the present application provides a leaf fertilizer spraying device for soybean planting, which comprises:

[0006] The swing bracket is arranged in the inner cavity of the vehicle frame main body. During the movement of the vehicle frame main body, the crops planted in the plough pass through the two sides of the swing bracket. A window is arranged on the top plate of the vehicle frame main body.

[0007] a plurality of movable spray rods arranged on the swing bracket, inner cavities of the plurality of movable spray rods being communicated with the inner cavity of the swing bracket, for spraying foliage fertilizer solution;

[0008] a pair of transmission pipelines arranged on the frame body, each of the transmission pipelines being communicated between the water tank of the frame body and the inner cavity of the swing bracket;

[0009] a driving device fixedly arranged on the frame body, the driving device being connected with the swing bracket, for driving the swing bracket to swing back and forth;

[0010] a pressure maintaining module arranged on the water tank, for maintaining the pressure environment of the inner cavity of the water tank stable.

[0011] Further, the swing bracket comprises:

[0012] a pair of bearing seats fixedly arranged at the bottom of the top plate of the frame body, the pair of bearing seats being located between the pair of side plates of the frame body;

[0013] a main shaft arranged between the pair of side plates, two ends of the main shaft being rotatably connected with the pair of bearing seats, the main shaft being connected with the driving device;

[0014] a pair of flow guide blind holes respectively arranged on the end faces of the two ends of the main shaft, the pair of flow guide blind holes being rotatably connected with the output ends of the pair of transmission pipelines, one of the transmission pipelines being communicated between one of the flow guide blind holes and the top of the inner cavity of the water tank, and the other of the transmission pipelines being communicated between the other of the flow guide blind holes and the bottom of the inner cavity of the water tank;

[0015] a pair of rocker arms fixedly arranged on the circumferential side wall of the main shaft, the central axes of the rocker arms being perpendicular to the central axis of the main shaft, the inner cavities of the pair of rocker arms being communicated with the pair of flow guide blind holes;

[0016] a pair of connecting rods movably arranged between the pair of rocker arms, the middle segments of the pair of connecting rods being rotatably connected with the bottom ends of the pair of rocker arms, the pair of rocker arms being fixedly connected with the two ends of the movable spray rods, and each of the connecting rods being communicated between one of the rocker arms and the inner cavities of the plurality of movable spray rods;

[0017] a pair of flow limiting assemblies respectively arranged at the rotatable connection portions between the pair of connecting rods and the pair of rocker arms.

[0018] Further, the flow limiting assembly comprises:

[0019] a flow guide pipe fixedly arranged at the middle segment of one of the connecting rods, the output end of the flow guide pipe being communicated with the inner cavity of the connecting rod, the bottom end port of one of the rocker arms being inserted into the inner cavity of the flow guide pipe, and the bottom end port of the rocker arm being rotatably connected with the flow guide pipe;

[0020] a first flow limiting sheet fixedly arranged on the inner wall of the flow guide pipe, the first flow limiting sheet being matched with the radial cross-sectional shape of the inner cavity of the flow guide pipe.

[0021] A plurality of first flow-limiting holes are formed on the first flow-limiting sheet, and the plurality of first flow-limiting holes are arranged in an array around the center circumference of the first flow-limiting sheet;

[0022] A second flow-limiting sheet is fixedly arranged on the inner wall of the bottom port of the rocker, the second flow-limiting sheet matches the radial cross-sectional shape of the inner cavity of the bottom port of the rocker, and the second flow-limiting sheet abuts against the first flow-limiting sheet;

[0023] A plurality of second flow-limiting holes are formed on the second flow-limiting sheet, and the plurality of second flow-limiting holes are arranged in an array around the center circumference of the second flow-limiting sheet;

[0024] A torsion spring is sleeved on the flow guide pipe, and the two ends of the torsion spring are fixedly connected with the flow guide pipe and the rocker, respectively.

[0025] Further, the swing bracket further comprises: a pair of vibration devices, which are fixedly arranged at the bottom ends of the pair of connecting rods, respectively.

[0026] Further, the swing bracket further comprises: a pair of magnetic attraction constraint assemblies, which are arranged on the pair of rockers, respectively, and are connected with the top ends of the pair of connecting rods, respectively, for magnetically constraining the pair of connecting rods.

[0027] Further, the magnetic attraction constraint assembly comprises:

[0028] A permanent magnet is fixedly arranged at the top end of one of the connecting rods;

[0029] A sliding groove is fixedly arranged on the side wall of one of the rockers, and the sliding groove is arranged along the length direction of the rocker, and when the connecting rod is parallel to the rocker, the permanent magnet corresponds to the position of the bottom end of the sliding groove;

[0030] A magnetic metal piece is slidingly arranged in the inner cavity of the sliding groove;

[0031] A pair of traction ropes are fixedly arranged on the top plate of the frame body, the bottom ends of the pair of traction ropes are connected with the magnetic metal piece, respectively, and the pair of traction ropes are arranged on the two sides of the main shaft, for driving the magnetic metal piece to slide along the sliding groove.

[0032] Further, the movable spray rod comprises:

[0033] A spray rod body is arranged between the pair of connecting rods, and the two ends of the spray rod body are fixedly connected with the pair of connecting rods, respectively;

[0034] A pair of flow channels are arranged in the interior of the spray rod body, one of the flow channels is in communication with the inner cavity of one of the connecting rods, and the other flow channel is in communication with the inner cavity of the other connecting rod;

[0035] A plurality of nozzles are fixedly arranged on the circumferential side wall of the spray rod body, and the input ends of the nozzles are in communication with one of the flow channels.

[0036] A plurality of air holes are formed in the circumferential side wall of the spray rod, and the plurality of air holes are communicated with another flow channel.

[0037] Further, the device further comprises:

[0038] A pair of fixed spray rods are fixedly arranged on the inner wall of the frame body, and the pair of fixed spray rods are respectively communicated with the bottom of the inner cavity of the water tank, the swing bracket is located between the pair of fixed spray rods, and any fixed spray rod is arranged in parallel with the side plate of the frame body, and is used for spraying foliar fertilizer solution;

[0039] A pair of roller shutter devices are respectively arranged at the head end of the frame body and the tail end of the frame body, and are used for shielding the ports at the head end and the tail end of the frame body.

[0040] Further, the roller shutter device comprises:

[0041] A pair of supports are fixedly arranged on the top of the frame body;

[0042] A roller shaft is arranged between the pair of supports, and two ends of the roller shaft are respectively rotatably connected with the pair of supports;

[0043] A pair of driving handles are respectively fixedly arranged at the two ends of the roller shaft, and are used for driving the rotation of the shaft;

[0044] A roller shutter is wound on the roller shaft, and the tail end of the roller shutter is vertically arranged on the ground, and is used for shielding the port at the head end of the frame body or the port at the tail end of the frame body;

[0045] A pair of brake assemblies are respectively arranged on the pair of supports, and the pair of brake assemblies are connected with the roller shaft, and are used for braking the roller shaft.

[0046] Further, the brake assembly comprises:

[0047] A guide groove is arranged on one of the supports;

[0048] A movable block is slidably arranged in the inner cavity of the guide groove along the axial direction of the guide groove, and the bottom of the movable block is abutted with the circumferential side wall surface of the roller shaft, and is used for braking the roller shaft;

[0049] A plurality of springs are arranged in the inner cavity of the guide groove, and two ends of any spring are respectively connected with the movable block and the top wall of the inner cavity of the guide groove, and are used for elastically supporting the movable block.

[0050] The foliar fertilizer spraying device for soybean planting has the following beneficial effects:

[0051] 1. This device, by setting up a swing bracket and multiple movable spray bars inside the semi-enclosed frame body, uses a drive device to control the swing bracket to swing back and forth. This causes the multiple movable spray bars to move back and forth towards the crops located on both sides of the swing bracket as the frame body moves, achieving a bottom-up spraying effect for foliar fertilizer solution. Furthermore, by simplifying its structure, it solves the problem of increased foliar fertilization costs caused by the need for large-area spraying devices in existing technologies, and reduces the dispersion rate of the atomized foliar fertilizer solution, improving its utilization rate. Secondly, the device has a viewing window on the top plate of the frame body, allowing users to easily observe the equipment's operation inside the frame body, facilitating timely repairs in case of malfunction. Thirdly, the device uses a vibration device at the bottom of the connecting rod to vibrate the connecting rod and the movable spray bars, making it easier for crop branches and leaves to insert into the gaps between the movable spray bars, preventing damage to the crop branches and leaves during foliar fertilization.

[0052] 2. The swing bracket of this device has a flow-limiting component at the rotational connection between the rocker arm and the connecting rod, and a vibration device at the bottom of each pair of connecting rods. As the swing bracket drives several movable spray bars to swing back and forth, when the rocker arm gradually approaches a vertical state after detaching from the crop, the connecting rod gradually approaches parallel to the rocker arm under the combined action of the torsion spring and gravity. This causes the first flow-limiting hole and the second flow-limiting hole to intersect, preventing the foliar fertilizer solution from entering the connecting rod through the rocker arm, and thus preventing the foliar fertilizer solution from being sprayed out through the movable spray bar. This avoids the problem of wasting foliar fertilizer solution due to excessive atomization spraying distance and improves the utilization rate of foliar fertilizer solution.

[0053] 3. This device utilizes a torsion spring to elastically support the connecting rod. As several movable spray bars approach the crop under the action of the rocker arm, the movable spray bars located at the bottom of the connecting rod preferentially press against the main stem of the crop near the root. This transmits the vibration generated by the vibration device to the main stem of the crop, causing the crop leaves to shake. This reduces the obstruction of the atomized foliar fertilizer solution by the overlapping leaves of the crop, enhances the adhesion rate of the foliar fertilizer solution on the back of the crop leaves, and increases the absorption rate of the foliar fertilizer solution by the crop. Furthermore, it can effectively prevent the movable spray bars located at the top of the connecting rod from excessively pressing on the relatively vigorous functional leaves at the top of the plant, thus preventing damage to them.

[0054] 4. This device incorporates a magnetic constraint component. When the rocker arm approaches a vertical position, the magnetic force between the magnetic metal component and the permanent magnet constrains the top of the connecting rod, preventing it from continuing to swing under the drive of the vibration device. This enhances the structural stability of the swing support and prevents the foliar fertilizer solution from being wasted by continuing to spray through the movable spray bar when the rocker arm is vertical, thus saving on foliar fertilizer application costs. Furthermore, the magnetic constraint component releases the magnetic constraint on the top of the connecting rod by using a traction rope to move the magnetic metal component away from the permanent magnet, greatly enhancing the operational reliability of the swing support. This effectively avoids the problem of increased frictional resistance between the magnetic metal component and the permanent magnet due to soil or other impurities trapped between them, which could lead to excessive compression of crops and damage during the swinging spraying of foliar fertilizer solution.

[0055] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0056] Figure 1 This is a perspective view according to an embodiment of the present invention;

[0057] Figure 2 This is a schematic diagram of the internal structure according to an embodiment of the present invention;

[0058] Figure 3 An assembly diagram of the swing bracket according to an embodiment of the present invention;

[0059] Figure 4 A schematic diagram of the internal structure of the swing bracket according to an embodiment of the present invention;

[0060] Figure 5 for Figure 4 A magnified view of a portion of region A;

[0061] Figure 6 An exploded view of the current limiting component according to an embodiment of the present invention;

[0062] Figure 7 for Figure 4 A magnified view of a portion of region B in the middle;

[0063] Figure 8 An assembly diagram of the magnetic attraction constraint assembly according to an embodiment of the present invention;

[0064] Figure 9 for Figure 4 A magnified view of a portion of region C in the middle;

[0065] Figure 10An exploded view of the structure of the magnetic attraction constraint component according to an embodiment of the present invention;

[0066] Figure 11 for Figure 4 A magnified view of a portion of region D in the middle;

[0067] Figure 12 An exploded view of the structure of the roller blind device according to an embodiment of the present invention;

[0068] Figure 13 An assembly diagram of the braking assembly according to an embodiment of the present invention.

[0069] Explanation of reference numerals in the attached diagram:

[0070] 1-Chassis body, 11-Top plate, 12-Connecting bracket, 13-Wheel, 14-Support leg, 15-Water tank, 16-Side plate, 2-Swing bracket, 21-Bearing seat, 22-Main shaft, 221-Blind guide hole, 23-Rock arm, 24-Connecting rod, 25-Flow limiting assembly, 251-Flow guide pipe, 252-First flow limiting plate, 2521-First flow limiting hole, 253-Second flow limiting plate, 2531-Second flow limiting hole, 254-Torsion spring, 26-Vibration device, 261-Mounting bracket, 262-Protective cover, 263-Motor, 264-Cam 27-Magnetic restraint assembly, 271-Permanent magnet, 272-Slide groove, 273-Magnetic metal part, 2731-Bearing part, 2732-Connecting part, 274-Traction rope, 3-Modible spray bar, 31-Spray bar body, 32-Flow channel, 33-Nozzle, 34-Air hole, 4-Transmission pipeline, 5-Drive device, 6-Pressure holding module, 61-Air pump, 62-Pressure relief valve, 7-Fixed spray bar, 8-Roller device, 81-Support, 82-Roller, 83-Drive handle, 84-Roller, 851-Guide groove, 852-Modible block, 853-Spring. Detailed Implementation

[0071] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0072] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0073] First, combine Figures 1-13 This invention relates to a foliar fertilizer spraying device for soybean cultivation, which is used for foliar topdressing of crops and has a wide range of applications.

[0074] Specifically, such as Figures 1-2 This invention discloses a foliar fertilizer spraying device for soybean cultivation, comprising: a swing bracket 2, several movable spray booms 3, a pair of transmission pipelines 4, a drive device 5, and a pressure holding module 6. The swing bracket 2 is disposed within the inner cavity of the frame body 1. During the movement of the frame body 1, crops planted in the cultivated land pass by both sides of the swing bracket 2. A viewing window (not shown in the figure) is provided on the top plate of the frame body. The viewing window consists of a window and a transparent acrylic plate, with the transparent acrylic plate fixedly disposed within the window to allow the user to observe the operation of the equipment within the frame body through the viewing window. Several movable spray booms 3... A rod 3 is mounted on a swing bracket 2, and the inner cavities of several movable spray rods 3 are all connected to the inner cavity of the swing bracket 2 for spraying foliar fertilizer solution; a pair of transmission pipes 4 are mounted on the frame body 1, and any one of the transmission pipes 4 connects the water tank 15 of the frame body 1 to the inner cavity of the swing bracket 2; a drive device 5 is fixedly mounted on the frame body 1 and connected to the swing bracket 2 for driving the swing bracket 2 to swing back and forth. In this embodiment, the drive device 5 includes, but is not limited to, a reduction motor 263; a pressure-maintaining module 6 is mounted on the water tank 15 to maintain a stable pressure environment inside the water tank 15.

[0075] Preferred, such as Figures 1-2 In this embodiment, the frame body 1 includes: a top plate 11, a connecting bracket 12, a pair of wheels 13, a pair of support legs 14, and a water tank 15; the top plate 11 is fixedly mounted on the top of a pair of side plates 16, with each side plate 16 perpendicular to the top plate 11; the connecting bracket 12 is fixedly mounted on the pair of side plates 16, allowing the user to pull the frame body 1 forward via the connecting bracket 12, and the user can also connect the connecting bracket 12 to a tractor, enabling the user to drive multiple vehicles of this device forward by driving a tractor, thus facilitating the user's use of the vehicle. This device is used to apply foliar fertilizer to soybean fields with wide ridges and raised beds. A pair of wheels 13 are rotatably mounted on a pair of side plates 16. A pair of support legs 14 are fixedly mounted on the pair of side plates 16. The pair of support legs 14 are located at the head end of the frame body 1 and are used to support the frame body 1. A water tank 15 is fixedly mounted on the top of the top plate 11. The water tank 15 is pre-stored with foliar fertilizer solution for crop foliar fertilizer application. The distance between the inner surface of the foliar fertilizer solution stored in the water tank 15 and the inner top wall of the water tank 15 is not less than one-quarter of the height of the water tank 15.

[0076] Furthermore, such as Figures 2-4The swing bracket 2 includes: a pair of bearing seats 21, a main shaft 22, a pair of flow guide blind holes 221, a pair of rocker arms 23, and a pair of connecting rods 24. The pair of bearing seats 21 are fixedly installed at the bottom of the top plate 11 of the frame body 1, and the pair of bearing seats 21 are located between a pair of side plates 16 of the frame body 1. The main shaft 22 is installed between the pair of side plates 16, and both ends of the main shaft 22 are rotatably connected to the pair of bearing seats 21. The main shaft 22 is connected to the drive device 5. The pair of flow guide blind holes 221 are respectively opened on the end faces of both ends of the main shaft 22. The pair of flow guide blind holes 221 are rotatably connected to the output ends of a pair of transmission pipes 4. One transmission pipe 4 connects one of the flow guide blind holes 221 to the top of the inner cavity of the water tank 15, and the other transmission pipe 4 connects the other flow guide blind hole 221 to the bottom of the inner cavity of the water tank 15. In this embodiment, a first valve is provided on the transmission pipeline 4, which is connected to the bottom of the inner cavity of the water tank 15, to control the opening and closing of the transmission pipeline 4; a pair of rocker arms 23 are fixedly installed on the circumferential side wall of the main shaft 22, and the central axis of any one rocker arm 23 is perpendicular to the central axis of the main shaft 22. The inner cavities of the pair of rocker arms 23 are respectively connected to a pair of guide blind holes 221; a pair of connecting rods 24 are movably installed between the pair of rocker arms 23, and the middle sections of the pair of connecting rods 24 are rotatably connected to the bottom ends of the pair of rocker arms 23. The pair of rocker arms 23 are respectively fixedly connected to the two ends of the movable spray rods 3. Any one of the connecting rods 24 connects one of the rocker arms 23 to the inner cavity of several movable spray rods 3; a pair of flow limiting components 25 are respectively installed at the rotatable connection between the pair of connecting rods 24 and the pair of rocker arms 23.

[0077] Furthermore, such as Figures 4-6The flow limiting assembly 25 includes: a flow guide tube 251, a first flow limiting plate 252, a plurality of first flow limiting holes 2521, a second flow limiting plate 253, a plurality of second flow limiting holes 2531, and a torsion spring 254; the flow guide tube 251 is fixedly disposed in the middle section of one of the connecting rods 24, the output end of the flow guide tube 251 is connected to the inner cavity of the connecting rod 24, and the bottom end of one of the rocker arms 23 is inserted into the inner cavity of the flow guide tube 251, and the bottom end of the rocker arm 23 is rotatably connected to the flow guide tube 251; the first flow limiting plate 252 is fixedly disposed on the inner wall of the flow guide tube 251, and the first flow limiting plate 252 matches the radial cross-sectional shape of the inner cavity of the flow guide tube 251; the plurality of first flow limiting holes 2521 are open A plurality of first flow-limiting holes 2521 are arranged in a circular array around the center of the first flow-limiting plate 252; a second flow-limiting plate 253 is fixedly disposed on the inner wall of the bottom port of the rocker arm 23, the second flow-limiting plate 253 matches the radial cross-sectional shape of the inner cavity of the bottom port of the rocker arm 23, and the second flow-limiting plate 253 abuts against the first flow-limiting plate 252; a plurality of second flow-limiting holes 2531 are formed on the second flow-limiting plate 253, and the plurality of second flow-limiting holes 2531 are arranged in a circular array around the center of the second flow-limiting plate 253; a torsion spring 254 is sleeved on the guide tube 251, and the two ends of the torsion spring 254 are fixedly connected to the guide tube 251 and the rocker arm 23 respectively.

[0078] Furthermore, such as Figure 3 , 4 The swing bracket 2 also includes: a pair of vibration devices 26, which are respectively fixedly installed at the bottom ends of a pair of connecting rods 24 for driving the connecting rods 24 to vibrate.

[0079] Preferred, such as Figure 3 , 4 As shown in Figures 7 and 8, in this embodiment, the vibration device 26 includes: a mounting bracket 261, a protective cover 262, a motor 263, and a cam 264; the mounting bracket 261 is fixedly mounted on the bottom end of one of the connecting rods 24; the protective cover 262 is fixedly mounted on the mounting bracket 261; the motor 263 is fixedly mounted on the mounting bracket 261; the cam 264 is rotatably mounted on the mounting bracket 261, and the cam 264 is fixedly connected to the output shaft of the motor 263. The cam 264 is located in the inner cavity of the protective cover 262 and is used to drive the bottom end of the connecting rod 24 to reciprocate with the rotational connection between the connecting rod 24 and the rocker arm 23 as the axis of rotation; during the operation of the vibration device 26, the motor 263 drives the cam 264 to rotate inside the protective cover 262, and then uses the inertia of the cam 264 during the rotation process to drive the bottom end of the connecting rod 24 to vibrate.

[0080] Furthermore, such as Figure 3 , 4As shown, the swing bracket 2 also includes: a pair of magnetic constraint components 27, which are respectively disposed on a pair of rockers 23, and the pair of magnetic constraint components 27 are respectively connected to the top of a pair of connecting rods 24 for magnetic constraint of the pair of connecting rods 24.

[0081] Furthermore, such as Figure 3 , 4 As shown in Figures 8, 9, and 10, the magnetic attraction constraint assembly 27 includes: a permanent magnet 271, fixedly mounted on the top of one of the connecting rods 24; a slide groove 272, fixedly mounted on the side wall of one of the rockers 23, the slide groove 272 being arranged along the length direction of the rocker 23, and when the connecting rod 24 and the rocker 23 are parallel, the permanent magnet 271 and the bottom end of the slide groove 272 are positioned correspondingly; a magnetic metal part 273, slidably mounted in the inner cavity of the slide groove 272; and a pair of traction ropes 274, fixedly mounted on the top plate 11 of the frame body 1, the bottom ends of the pair of traction ropes 274 being connected to the magnetic metal part 273, the pair of traction ropes 274 being arranged on both sides of the main shaft 22, used to pull the magnetic metal part 273 to slide along the guide of the slide groove 272. In this embodiment, the traction ropes 274 are preferably made of soft ropes with low elasticity.

[0082] Preferred, such as Figure 3 , 4 As shown in Figures 8, 9, and 10, the magnetic metal part 273 includes: a support portion 2731 and a connecting portion 2732; the bottom of the support portion 2731 is movably disposed in the inner cavity of the slide groove 272, the bottom of the support portion 2731 is cylindrical, the bottom diameter of the support portion 2731 is greater than the width of the top port of the slide groove, and the height is less than the inner cavity depth of the slide groove 272. When the position of the magnetic metal part 273 corresponds to that of the permanent magnet 271, the top of the support portion 2731 extends out of the groove of the slide groove 272 under the magnetic force of the permanent magnet 271 and is magnetically attracted to the permanent magnet 271; the connecting portion 2732 is fixedly disposed on the top of the support portion 2731, and the connecting portion 2732 is connected to the bottom end of a pair of traction ropes 274.

[0083] When the drive device 5 drives the main shaft 22 to rotate at a certain angle, the main shaft 22 drives the rocker arm 23 to deflect to one side at a certain angle. As the deflection angle of the rocker arm 23 increases, the magnetic metal part 273, under the pull of the traction rope 274, slides from the bottom of the slide towards the top of the slide groove 272 until the magnetic metal part 273 disengages from the permanent magnet 271, thereby releasing the magnetic constraint on the top of the connecting rod 24. When the main shaft 22 drives the rocker arm 23 to deflect back to its original position, the magnetic metal part 273 slides to the bottom of the slide groove 272 under the action of gravity, and the connecting rod 24 gradually approaches the parallel rocker arm 23 under the action of gravity. As the permanent magnet 271 gradually approaches, the magnetic metal part 273 is finally magnetically attracted to the permanent magnet 271 again, thereby magnetically constraining the top of the connecting rod 24 again.

[0084] Furthermore, such as Figure 3 , 4 As shown in Figure 11, the movable spray bar 3 includes: a spray bar body 31, a pair of flow channels 32, a plurality of nozzles 33, and a plurality of air holes 34; the spray bar body 31 is disposed between a pair of connecting rods 24, and both ends of the spray bar body 31 are fixedly connected to the pair of connecting rods 24 respectively; the pair of flow channels 32 are disposed inside the spray bar body 31, one flow channel 32 is connected to the inner cavity of one of the connecting rods 24, and the other flow channel 32 is connected to the inner cavity of the other connecting rod 24; the plurality of nozzles 33 are fixedly disposed on the circumferential sidewall of the spray bar body 31, and the input end of the nozzle 33 is connected to one of the flow channels 32; the plurality of air holes 34 are opened on the circumferential sidewall of the spray bar, and the plurality of air holes 34 are connected to the other flow channel 32.

[0085] Preferred, such as Figure 1 , 2 As shown, in this embodiment, the pressure holding module 6 includes: an air pump 61 and a pressure relief valve 62; the air pump 61 is fixedly installed on the top of the water tank 15, and the air outlet of the air pump 61 is connected to the top of the inner cavity of the water tank 15 for injecting air into the water tank 15; the pressure relief valve 62 is fixedly installed on the top of the water tank 15, and the air inlet of the pressure relief valve 62 is connected to the top of the inner cavity of the water tank 15. When the pressure inside the water tank 15 reaches a certain level, the air at the top of the inner cavity of the water tank 15 is discharged through the pressure relief valve 62.

[0086] Preferred, such as Figures 1-3 As shown, in this embodiment, a sensor (not shown in the figure) is installed at the rotational connection between the bottom end of the rocker arm 23 and the middle section of the connecting rod 24 to detect the deflection angle of the connecting rod 24 relative to the rocker arm 23. A controller (not shown in the figure) is installed on the frame body 1. The controller is electrically connected to the sensor, the drive device 5 and the air pump 61 to form a closed-loop control system. Based on the deflection angle signal of the connecting rod 24 relative to the rocker arm 23, the controller dynamically adjusts the output power of the air pump 61. At the same time, it allows the user to control the drive device 5 through the controller to accurately adjust the swing amplitude of the rocker arm 23, avoiding damage to crops due to excessive swing amplitude of the rocker arm 23 or insufficient foliar fertilizer spraying due to insufficient swing amplitude. This significantly improves the operational flexibility and intelligent operation level of the device.

[0087] Furthermore, such as Figure 1 , 2As shown, the device also includes: a pair of fixed spray rods 7 and a pair of roller shutter devices 84; the pair of fixed spray rods 7 are fixedly installed on the inner wall of the frame body 1, and the pair of fixed spray rods 7 are respectively connected to the bottom of the inner cavity of the water tank 15. The swing bracket 2 is located between the pair of fixed spray rods 7. Any one of the fixed spray rods 7 is arranged in parallel with the side plate 16 of the frame body 1 for spraying foliar fertilizer solution. In this embodiment, a second valve is provided at the input end of each pair of fixed spray rods 7 for controlling the opening and closing of the fixed spray rods 7; the pair of roller shutter devices 84 are respectively installed at the head end and the tail end of the frame body 1 for covering the ports at both ends of the frame body 1.

[0088] Furthermore, such as Figure 1 , 2 As shown in Figures 12 and 13, the roller blind 84 device 8 includes: a pair of supports 81, a roller 82, a pair of drive handles 83, a roller blind 84, and a pair of braking components; the pair of supports 81 are fixedly mounted on the top of the frame body 1; the roller 82 is mounted between the pair of supports 81, and both ends of the roller 82 are rotatably connected to the pair of supports 81 respectively; the pair of drive handles 83 are fixedly mounted on both ends of the roller 82 for driving the roller to rotate; the roller blind 84 is rolled up on the roller 82, and the tail end of the roller blind 84 hangs down to the ground for covering the head end or tail end of the frame body 1; the pair of braking components are respectively mounted on the pair of supports 81, and the pair of braking components are connected to the roller 82 for braking the roller 82.

[0089] In this embodiment, the user controls the drive handle 83 to drive the roller 82 to rotate, thereby controlling the roller 82 to roll up or release the roller blind 84, so as to adjust the height between the tail end of the roller blind 84 and the ground, to ensure that the crops can smoothly pass through the head end port of the frame body 1 and enter the inner cavity of the frame body 1. In addition, this device uses the roller blind 84 of a pair of roller blind devices 8 to cover the head end and tail end ports of the frame body 1, and uses the movable canopy rod and the fixed spray bar 7 to apply foliar fertilizer to the crops in the inner cavity of the frame body 1. This can effectively reduce the dispersion speed of the atomized foliar fertilizer solution in the inner cavity of the frame body 1, enhance the adhesion effect of the atomized foliar fertilizer solution on the crop leaves, and also effectively prevent the operator from inhaling the atomized foliar fertilizer solution, thus enhancing the practicality of this device.

[0090] Furthermore, such as Figure 1 , 2As shown in Figures 12 and 13, the braking assembly includes: a guide groove 851, a movable block 852, and several springs 853. The guide groove 851 is disposed on one of the supports 81. The movable block 852 is slidably disposed in the inner cavity of the guide groove 851 along the axial direction of the guide groove 851. The bottom of the movable block 852 abuts against the circumferential side wall surface of the reel 82 for braking the reel 82. Several springs 853 are disposed in the inner cavity of the guide groove 851. The two ends of any one spring 853 are respectively connected to the movable block 852 and the top wall of the inner cavity of the guide groove 851 for elastically supporting the movable block 852.

[0091] When the equipment is running, the air pump 61 of the pressure holding module 6 injects air into the water tank 15. When the air pressure inside the water tank 15 reaches a certain level, the air at the top of the water tank 15 is discharged through the pressure relief valve 62, so that the pressure of the water tank 15 fluctuates slightly within the expected range, thereby maintaining the stability of the water tank 15's internal pressure. Under the drive of the higher pressure environment, part of the foliar fertilizer solution in the water tank 15 is sprayed out into the inner cavity of the frame body 1 through the fixed spray bar 7. At the same time, the user drags the frame body 1 forward. During the movement of the frame body, two rows of crops planted on the cultivated land enter the inner cavity of the frame body 1 through the head end port and leave the inner cavity of the frame body 1 through the tail end port. They pass through the sides of the swing bracket 2 respectively. During the process of the crops passing through the inner cavity of the frame body 1, a pair of fixed spray bars 7 spray the foliar fertilizer solution onto the leaves of the crops, thereby performing foliar fertilization on the crops.

[0092] As the frame body 1 moves forward, the drive unit 5 drives the main shaft 22 to rotate periodically, thereby using the main shaft 22 to drive a set of rocker arms 23, causing the bottom ends of the rocker arms 23 to swing back and forth. In one cycle of the reciprocating swing of a pair of rocker arms 23, firstly, the rocker arms 23 drive a pair of connecting rods 24 and several movable spray bars 3 mounted on them to move closer to the crops on one side. As the deflection angle of the rocker arms 23 increases, the magnetic metal part 273 slides from the bottom end of the slide groove 272 to the top end of the slide groove 272. This causes the magnetic metal part 273 to detach from the permanent magnet 271, thereby releasing the magnetic constraint on the top of the connecting rod 24. The angle between the connecting rod 24 and the rocker arm 23 also increases, leading to an increase in the intersection area of ​​the first flow-limiting hole 2521 on the first flow-limiting plate 252 and the second flow-limiting hole 2531 on the second flow-limiting plate 253. The foliar fertilizer solution stored in the water tank 15 flows sequentially through one of the transmission pipes 4 and the connected blind guide hole 221 and rocker arm 23. The inner cavity, the second flow-limiting hole 2531, the first flow-limiting hole 2521, and the inner cavity of the connecting rod 24 enter one of the flow channels 32 inside the movable spray bar 3, and are finally sprayed out through the nozzle 33 connected to the flow channel 32, thereby spraying the foliar fertilizer solution onto the back of the crop leaves to achieve foliar fertilization of the crop; at the same time, the air at the top of the inner cavity of the water tank 15 flows sequentially through another transmission pipe 4 and the flow guide blind hole 221 connected to it, the inner cavity of the rocker arm 23, the second flow-limiting hole 2531, the first flow-limiting hole 2521, and the first flow-limiting hole 2521. The flow-limiting orifice 2521 and the inner cavity of the connecting rod 24 enter another flow channel 32 inside the movable spray bar 3, and finally spray out through the air hole 34 connected to the flow channel 32. The airflow sprayed out through the air hole 34 accelerates the diffusion efficiency of the atomized foliar fertilizer solution in the inner cavity space of the frame body 1, thereby enhancing the foliar spraying effect of the device on the foliar fertilizer solution. After completing the foliar topdressing of the crops on one side, several movable spray bars 3 move towards the crops on the other side under the drive of the swing bracket 2.

[0093] While the drive device 5 controls the swing bracket 2 to swing, a pair of vibration devices 26 respectively drive a pair of connecting rods 24 to vibrate. When the permanent magnet 271 set on the connecting rod 24 disengages from the magnetic metal part 273 set on the rocker arm 23, the connecting rod 24 loses its magnetic constraint, causing the amplitude of the pair of connecting rods 24 and the several movable spray rods 3 set on them to increase. As the swing angle of the rocker arm 23 increases, the movable spray rods 3 set at the bottom of the connecting rod 24 preferentially contact the crops, and under the elastic support of the torsion spring 254, they gradually press the main stem of the crops, thereby bringing The leaves of the crop are shaken to reduce the obstruction of the atomized foliar fertilizer solution by the overlapping leaves, thereby increasing the adhesion rate of the foliar fertilizer solution on the back of the crop leaves and the absorption rate of the foliar fertilizer solution by the crop. After the movable spray bar 3 at the bottom of the connecting rod 24 comes into contact with the crop, as the rocker arm 23 deflects further, the movable spray bar 3 at the top of the pair of connecting rods 24 moves significantly closer to the crop, reducing the atomization spraying distance of the foliar fertilizer solution by the movable spray bar 3 at the middle and top of the connecting rod 24, and enhancing the foliar spraying effect on the crop.

[0094] Above, refer to Figures 1-13 A foliar fertilizer spraying device for soybean cultivation according to an embodiment of the present invention is described, which has the following beneficial effects:

[0095] 1. This device, by setting up a swing bracket 2 and multiple movable spray bars 3 in the inner cavity of a semi-enclosed frame body 1, uses a drive device 5 to control the swing bracket 2 to swing back and forth. This causes the multiple movable spray bars 3 to move back and forth towards the crops located on both sides of the swing bracket 2 during the movement of the frame body 1. This achieves the effect of spraying foliar fertilizer solution from bottom to top, and by simplifying its structure, it solves the problem of increased cost of foliar fertilization caused by the need for large-area spraying devices in existing technologies. Furthermore, it reduces the escape rate of the atomized foliar fertilizer solution. The device improves the dispersing speed and utilization rate of foliar fertilizer solution. Secondly, by setting a viewing window on the top plate 11 of the main body 1, the user can easily observe the operation of the equipment inside the main body 1 at any time, so that the user can repair the equipment in time when it malfunctions. Thirdly, by setting a vibration device 26 at the bottom of the connecting rod 24 to drive the connecting rod 24 and the movable spray bar 3 to vibrate, the branches and leaves of the crops can be more easily inserted into the gaps between the movable spray bars 3, so as to prevent damage to the branches and leaves of the crops during the foliar fertilization process.

[0096] 2. The swing bracket 2 of this device has a flow-limiting component 25 set at the rotational connection between the rocker arm 23 and the connecting rod 24, and a vibration device 26 set at the bottom of each pair of connecting rods 24. As the swing bracket 2 drives several movable spray rods 3 to swing back and forth, when the rocker arm 23 gradually tends to a vertical state after it is separated from the crop, the connecting rod 24 gradually approaches parallel to the rocker arm 23 under the combined action of the elastic force of the torsion spring 254 and gravity. This causes the first flow-limiting hole 2521 and the second flow-limiting hole 2531 to intersect each other, preventing the foliar fertilizer solution from entering the connecting rod 24 through the rocker arm 23, and thus preventing the foliar fertilizer solution from being sprayed out through the movable spray rods 3. This avoids the problem of wasting foliar fertilizer solution due to excessive atomization spraying distance and improves the utilization rate of foliar fertilizer solution.

[0097] 3. This device utilizes a torsion spring 254 to elastically support the connecting rod 24. As several movable spray bars 3 move towards the crop under the action of the rocker arm 23, the movable spray bars 3 located at the bottom of the connecting rod 24 preferentially press against the main stem of the crop near the root. This transmits the vibration generated by the vibration device 26 to the main stem of the crop, causing the crop leaves to shake. This reduces the obstruction of the atomized foliar fertilizer solution by the overlapping leaves of the crop, enhances the adhesion rate of the foliar fertilizer solution on the back of the crop leaves, and increases the absorption rate of the foliar fertilizer solution by the crop. Furthermore, it can effectively prevent the movable spray bars 3 located at the top of the connecting rod 24 from excessively pressing the relatively vigorous functional leaves at the top of the plant, thus preventing damage to them.

[0098] 4. This device, by setting up a magnetic constraint component 27, ensures that when the rocker arm 23 approaches a vertical state, the magnetic force between the magnetic metal part 273 and the permanent magnet 271 constrains the top of the connecting rod 24, preventing the connecting rod 24 from continuing to swing under the drive of the vibration device 26. This enhances the structural stability of the swing bracket 2 and prevents the foliar fertilizer solution from continuing to be sprayed through the movable spray bar 3 when the rocker arm 23 is in a vertical state, thus saving the cost of spraying the foliar fertilizer solution. Furthermore, the magnetic constraint component 27, through the use of... The traction rope 274 pulls the magnetic metal part 273 to move and separate it from the permanent magnet 271, thereby releasing the magnetic constraint on the top of the connecting rod 24. This greatly enhances the operational reliability of the swing bracket 2 and effectively avoids the problem of excessive compression of crops and damage to crops during the swinging support 2 driving the movable spray bar 3 to swing and spray foliar fertilizer solution. This is because the magnetic metal part 273 and the permanent magnet 271 are often separated by soil or other impurities.

[0099] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0100] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A foliar fertilizer spraying device for soybean cultivation, characterized in that, Include: A swing bracket is installed in the inner cavity of the frame body. During the movement of the frame body, crops planted in the farmland pass by both sides of the swing bracket. A viewing window is provided on the top plate of the frame body. Several movable spray bars are mounted on the swing bracket, and the inner cavities of the several movable spray bars are all connected to the inner cavity of the swing bracket for spraying foliar fertilizer solution. A pair of transmission pipes are provided on the frame body, and either of the transmission pipes connects the water tank of the frame body to the inner cavity of the swing bracket; A drive unit is fixedly mounted on the frame body. The drive unit is connected to the swing bracket and is used to drive the swing bracket to swing back and forth. A pressure-maintaining module is installed on the water tank to maintain a stable pressure environment inside the water tank. The swing bracket includes: A pair of bearing seats are fixedly installed at the bottom of the top plate of the frame body, and the pair of bearing seats are located between a pair of side plates of the frame body; A main shaft is disposed between the pair of side plates, and both ends of the main shaft are rotatably connected to the pair of bearing seats. The main shaft is connected to the drive device. A pair of flow guiding blind holes are respectively opened on the end faces of the two ends of the main shaft. The pair of flow guiding blind holes are rotatably connected to the output ends of the pair of transmission pipes. One of the transmission pipes connects one of the flow guiding blind holes to the top of the inner cavity of the water tank, and the other transmission pipe connects the other flow guiding blind hole to the bottom of the inner cavity of the water tank. A pair of rockers are fixedly mounted on the circumferential sidewall of the main shaft, with the central axis of any one of the rockers perpendicular to the central axis of the main shaft, and the inner cavities of the pair of rockers are respectively connected to the pair of guide blind holes; A pair of connecting rods are movably disposed between the pair of rockers. The middle sections of the pair of connecting rods are rotatably connected to the bottom ends of the pair of rockers. The pair of rockers are fixedly connected to both ends of the movable spray rods. Any one of the connecting rods connects one of the rockers to the inner cavity of the plurality of movable spray rods. A pair of current-limiting components are respectively disposed at the rotational connection between the pair of connecting rods and the pair of rockers.

2. The foliar fertilizer spraying device for soybean cultivation as described in claim 1, characterized in that, The current limiting component includes: A flow guide tube is fixedly installed in the middle section of one of the connecting rods. The output end of the flow guide tube is connected to the inner cavity of the connecting rod. The bottom end of one of the rocker arms is inserted into the inner cavity of the flow guide tube, and the bottom end of the rocker arm is rotatably connected to the flow guide tube. The first flow limiting plate is fixedly disposed on the inner wall of the flow guide tube, and the first flow limiting plate matches the radial cross-sectional shape of the inner cavity of the flow guide tube; A plurality of first flow-limiting holes are formed on the first flow-limiting plate, and the plurality of first flow-limiting holes are distributed in a circular array around the center of the first flow-limiting plate; The second flow limiting plate is fixedly installed on the inner wall of the bottom port of the rocker arm. The second flow limiting plate matches the radial cross-sectional shape of the inner cavity of the bottom port of the rocker arm, and the second flow limiting plate abuts against the first flow limiting plate. A plurality of second flow-limiting holes are formed on the second flow-limiting plate, and the plurality of second flow-limiting holes are distributed in a circular array around the center of the second flow-limiting plate; A torsion spring is sleeved on the guide tube, and the two ends of the torsion spring are respectively fixedly connected to the guide tube and the rocker arm.

3. The foliar fertilizer spraying device for soybean cultivation as described in claim 2, characterized in that, The swing bracket also includes: a pair of vibration devices, which are respectively fixedly disposed at the bottom ends of the pair of connecting rods.

4. The foliar fertilizer spraying device for soybean cultivation as described in claim 1, characterized in that, The swing bracket further includes: a pair of magnetic constraint components, which are respectively disposed on the pair of rockers and connected to the top ends of the pair of connecting rods for magnetic constraint of the pair of connecting rods.

5. The foliar fertilizer spraying device for soybean cultivation as described in claim 4, characterized in that, The magnetic constraint component includes: A permanent magnet is fixedly mounted on the top of one of the connecting rods; A sliding groove is fixedly installed on the side wall of one of the rockers. The sliding groove is arranged along the length direction of the rocker. When the connecting rod is parallel to the rocker, the permanent magnet corresponds to the bottom end of the sliding groove. A magnetic metal component is slidably disposed within the inner cavity of the groove; A pair of traction ropes are fixedly installed on the top plate of the main body of the vehicle frame. The bottom ends of the pair of traction ropes are connected to the magnetic metal parts. The pair of traction ropes are arranged on both sides of the main shaft and are used to pull the magnetic metal parts to slide along the guide of the slide groove.

6. The foliar fertilizer spraying device for soybean cultivation as described in claim 1, characterized in that, The movable spray bar includes: The spray bar body is disposed between the pair of connecting rods, and both ends of the spray bar body are fixedly connected to the pair of connecting rods respectively; A pair of flow channels are disposed inside the body of the spray bar, one of the flow channels communicating with the inner cavity of one of the connecting rods, and the other flow channel communicating with the inner cavity of the other connecting rod; Several nozzles are fixedly mounted on the circumferential sidewall of the spray bar body, and the input end of each nozzle is connected to one of the flow channels; Several air holes are formed on the circumferential sidewall of the spray bar, and the air holes are connected to another flow channel.

7. The foliar fertilizer spraying device for soybean cultivation as described in claim 1, characterized in that, Also includes: A pair of fixed spray bars are fixedly installed on the inner wall of the frame body. The pair of fixed spray bars are respectively connected to the bottom of the inner cavity of the water tank. The swing bracket is located between the pair of fixed spray bars. Any one of the fixed spray bars is arranged in parallel with the side plate of the frame body for spraying the foliar fertilizer solution. A pair of roller blinds are respectively installed at the head end and the tail end of the frame body to cover the ports at both ends of the frame body.

8. The foliar fertilizer spraying device for soybean cultivation as described in claim 7, characterized in that, The roller blind device includes: A pair of supports are fixedly mounted on the top of the frame body; A reel is disposed between the pair of supports, and both ends of the reel are rotatably connected to the pair of supports respectively; A pair of drive handles are fixedly mounted at both ends of the reel, respectively, for driving the reel to rotate; A roller blind, rolled up on the roller, with its tail end hanging down to the ground, is used to cover the head end or tail end of the frame body. A pair of braking components are respectively disposed on the pair of supports, and the pair of braking components are connected to the reel and are used to brake the reel.

9. The foliar fertilizer spraying device for soybean cultivation as described in claim 8, characterized in that, The braking assembly includes: A guide groove is provided on one of the supports; A movable block is slidably disposed in the inner cavity of the guide groove along the axial direction of the guide groove, and the bottom of the movable block abuts against the circumferential side wall surface of the reel, for braking the reel; Several springs are disposed in the inner cavity of the guide groove, and the two ends of any one of the springs are respectively connected to the movable block and the top wall of the inner cavity of the guide groove, for elastic support of the movable block.

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