Pest and disease prevention and control device for corn growth soil and prevention and control method thereof

Abstract

The invention relates to the technical field of soil disease and insect pest prevention and control equipment, and discloses a disease and insect pest prevention and control device for corn growth soil and a prevention and control method thereof.The disease and insect pest prevention and control device comprises a vehicle body, and multiple sets of contact pins are obliquely arranged on the vehicle body and distributed in an annular array. The vertical driving mechanism drives the contact pins to move to the ground around the seedlings, then the inclined driving mechanism drives the contact pins to be obliquely inserted into the soil at the bottoms of the seedlings, meanwhile, the liquid injection mechanism enables the bottom ends of the contact pins to spray out a pesticide, and the pesticide can permeate into the soil around the seedlings and in places at the same time; the vertical driving mechanism and the inclined driving mechanism are used for driving inclined needles to suspend around the seedlings and then point to rhizome bases of the seedlings, and then the liquid injection mechanism is used for spraying pesticides to the rhizome bases of the seedlings, so that the emerging pests can be killed, and the control effect on the pests in the soil is improved. Soil diseases and insect pests in the corn seedling stage can be efficiently treated.

Description

Technical Field

[0001] The present invention relates to the technical field of soil pest and disease control equipment, and particularly to a pest and disease control device and method for corn-growing soil. Background Art

[0002] The seedling stage of corn is a relatively vulnerable stage of the plant and is easily invaded by various soil pests. Common ones include cutworms, white grubs, wireworms, mole crickets, root maggots, etc. These pests damage the roots and the base of the stems of corn seedlings, hinder the transmission of nutrients, and ultimately lead to the death of corn seedlings. The main control measure for such pests during the corn seedling stage is liquid irrigation of the roots. Chinese Patent Application CN118901476A discloses a plant root irrigation device for pest and disease control. This device is provided with multiple root irrigation mechanisms to irrigate water and nutrient solution to the roots of plants. However, this device can only irrigate the soil around the roots, and pests in the soil may still reach the root and stem from directly below the roots, resulting in limited control effects. In addition, this device is suitable for internal soil irrigation and is mainly used for fertilization and pest prevention. When pests have already appeared at the root and stem base of corn seedlings, other devices and methods still need to be used for pest control. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a pest and disease control device and method for corn-growing soil, which has the advantages of good control effect, simple and efficient operation, etc., and solves the problems that the existing root irrigation equipment for controlling soil pests and diseases can only prevent pests around the roots, cannot prevent pests directly below the roots, and cannot deal with pests that have already appeared at the root and stem base.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A pest and disease control device for corn-growing soil, including a vehicle body, an obliquely arranged needle is provided on the vehicle body. The needles are provided in multiple groups and are distributed in a circular array. A vertical driving mechanism, an oblique driving mechanism, and a liquid injection mechanism are also provided on the vehicle body;

[0005] The vertical driving mechanism includes a mounting frame for installing the needles and a main hydraulic cylinder for driving the mounting frame to move vertically. The vertical driving mechanism is used to drive the needles to move vertically.

[0006] The oblique driving mechanism includes an auxiliary hydraulic cylinder fixed on the mounting frame. The oblique driving mechanism is used to drive the needles to move obliquely;

[0007] The needles are provided as hollow and a drainage hole group is provided at the bottom end. The liquid injection mechanism includes a water tank for storing the solvent and a water pump for transporting the solvent. The liquid injection mechanism is used to output the solvent to the end of the needles;

[0008] After the vehicle body moves, the mounting frame is positioned directly above the plant. The vertical driving mechanism operates, forcing the needle to move to the ground around the plant. Subsequently, the oblique driving mechanism and the liquid injection mechanism operate. The oblique driving mechanism forces the needle to be obliquely inserted into the soil directly below the plant, and at the same time, the liquid injection mechanism transports the solvent to the end of the needle, forcing the solvent to penetrate into the soil. After that, the oblique driving mechanism and the vertical driving mechanism operate in sequence to force the needle to be pulled out and hover around the plant. The liquid injection mechanism operates again to spray the solvent through the end of the needle onto the base of the plant rhizome.

[0009] Preferably, the mounting frame is arranged inside the vehicle body. The mounting frame includes a horizontally arranged lower annular plate and an upper annular plate. A plurality of connecting rods are fixed between the upper annular plate and the lower annular plate. The main hydraulic cylinder is fixed on the vehicle body. The output end of the main hydraulic cylinder faces vertically downward and is fixed with a pressure sensor. The bottom of the pressure sensor is fixed with a connecting plate. One end of the connecting plate is fixedly connected to the top of the upper annular plate. The needle is mounted on the top of the lower annular plate.

[0010] Preferably, a plurality of base blocks distributed in a circular array are fixed on the top of the lower annular plate. Oblique chutes are arranged on the base blocks. The bottom end of the oblique chute faces the center of the lower annular plate. An oblique slider is slidably connected inside the oblique chute. The needle passes through the oblique slider and is fixed to the oblique slider. The needle is in the same direction as the oblique chute.

[0011] Preferably, the oblique driving mechanism further includes a movable ring arranged inside the mounting frame. The auxiliary hydraulic cylinder is vertically arranged and fixed on the top of the mounting frame. The output end of the auxiliary hydraulic cylinder is fixedly connected to the top of the movable ring. A plurality of horizontally arranged transverse slide rails are fixed to the bottom of the movable ring. The plurality of transverse slide rails are distributed in a circular array. A transverse slider is slidably connected to the transverse slide rail. The bottom of the transverse slider is fixedly connected to a vertical rod. The vertical rod is fixed to the oblique slider.

[0012] Preferably, a return spring is fixedly connected to the inner wall of one end of the transverse slide rail close to the center of the movable ring. The other end of the return spring is fixedly connected to the transverse slider.

[0013] Preferably, the water tank is fixed inside the vehicle body. The water pump is fixed on the inner wall of the water tank. The output end of the water pump is fixed with a main output pipe. One end of the main output pipe penetrates to the outside of the water tank and is fixed with an annular pipe. The annular pipe is fixedly sleeved on the outer edge of the upper annular plate. A plurality of uniformly distributed auxiliary output pipes are fixed on the annular pipe. One end of the auxiliary output pipe away from the annular pipe is fixedly connected to the side wall of the top end of the needle.

[0014] Preferably, the drainage hole group at the bottom end of the pin includes a lower through hole opened on the end face of the bottom end of the pin and a side through hole opened on the side face of the bottom end of the pin. A control component is also provided on the pin. The control component is used to control the opening and closing of the lower through hole and the side through hole. The control component includes a push hydraulic cylinder fixed at the top end of the pin. A base shaft is fixed at the output end of the push hydraulic cylinder. The base shaft penetrates through the top end of the pin and is inserted into the interior of the pin. A sealing block is fixed at one end of the base shaft located inside the pin. A connection hole is opened on the sealing block, and the position of the connection hole is staggered from that of the lower through hole.

[0015] Preferably, a leaf bundling component is provided on the lower annular plate. The leaf bundling component includes an elastic ring located inside the lower annular plate and capable of stretching. When spraying the solvent on the base of the plant rhizome, the leaf bundling component pre-binds the plant leaves through the stretching of the elastic ring.

[0016] Preferably, an annular channel is opened on the outer edge of the lower annular plate. A plurality of evenly distributed radial through holes are opened on the inner wall of the annular channel. The leaf bundling component further includes a rotating ring and a motor. The rotating ring is rotatably connected to the outer edge of the lower annular plate. A plurality of pull ropes are fixed on the inner side of the rotating ring. The pull ropes sequentially pass through the annular channel and the radial through holes and are fixed to the elastic ring. An arc-shaped rack is also fixed on the inner side of the rotating ring. The motor is fixed on the top of the lower annular plate. A driving gear is fixed on the output shaft of the motor. The driving gear meshes with the arc-shaped rack.

[0017] The present invention discloses a method for preventing and controlling diseases and pests of corn growth soil. This method for preventing and controlling diseases and pests of corn growth soil uses the above-mentioned device for preventing and controlling diseases and pests of corn growth soil.

[0018] Compared with the prior art, the present invention provides a device for preventing and controlling diseases and pests of corn growth soil and its prevention and control method, having the following beneficial effects:

[0019] 1. For this device for preventing and controlling diseases and pests of corn growth soil and its prevention and control method, by setting the pins, vertical driving mechanism, oblique driving mechanism and liquid injection mechanism, during use, first use the vertical driving mechanism to drive the pins to move to the ground around the seedlings, and then use the oblique driving mechanism to drive the pins to obliquely insert into the soil at the bottom of the seedlings. At the same time, the liquid injection mechanism makes the bottom end of the pin spray the medicament. At this time, the medicament can penetrate into the soil around the seedlings and the local area at the same time, forming a more perfect protection area, improving the control effect on pests in the soil, and using the vertical driving mechanism and the oblique driving mechanism can also drive the oblique pins to hover around the seedlings and point to the base of the seedling rhizome, and then use the liquid injection mechanism to spray the medicament on the base of the seedling rhizome, which is beneficial to killing the existing pests and can efficiently deal with the soil diseases and pests in the corn seedling stage.

[0020] 2. The pest control device and its control method for the soil where this kind of corn grows. By setting up a leaf-binding component, it can briefly bind the leaves of the corn seedlings in advance before spraying medicine on the root base of the corn seedlings, avoiding the leaves from blocking the spraying trajectory of the liquid medicine, ensuring that the liquid medicine stably adheres to the root base, and having stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic perspective view of a pest control device for the soil where a corn grows according to the present invention;

[0022] Figure 2 Schematic diagram of the liquid injection mechanism of the present invention;

[0023] Figure 3 Cross-sectional view of the mounting bracket of the present invention;

[0024] Figure 4 Schematic diagram of the oblique drive mechanism of the present invention;

[0025] Figure 5 Schematic cross-sectional view of the pin of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of part A;

[0027] Figure 7 Cross-sectional view of the control component in the working state of the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged view of part B;

[0029] Figure 9 Partial cross-sectional view of the lower annular plate of the present invention;

[0030] Figure 10 Exploded view of the structure of the leaf-binding component of the present invention.

[0031] In the figure: 1, vehicle body; 2, plug pin; 21, lower through hole; 22, side through hole; 3, vertical drive mechanism; 31, mounting frame; 311, lower annular plate; 312, upper annular plate; 313, connecting rod; 314, base block; 315, oblique slide groove; 316, oblique slide block; 317, annular channel; 318, radial through hole; 32, main hydraulic cylinder; 33, pressure sensor; 34, connecting plate; 4, oblique drive mechanism; 41, auxiliary hydraulic cylinder; 42, movable Ring; 43, horizontal slide rail; 44, horizontal slider; 45, vertical rod; 46, reset spring; 5, injection mechanism; 51, water tank; 52, water pump; 53, main output pipe; 54, annular pipe; 55, auxiliary output pipe; 6, control component; 61, push hydraulic cylinder; 62, base shaft; 63, sealing block; 64, connecting hole; 7, beam blade component; 71, elastic ring; 72, motor; 73, pull rope; 74, arc rack; 75, drive gear; 76, rotating ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a disease and insect pest control device for corn growing soil and a control method thereof.

[0034] Example 1: Please refer to Figures 1 - 3 , a pest control device for corn growing soil, comprising a vehicle body 1, on which obliquely arranged plug pins 2 are arranged, wherein the plug pins 2 are arranged in a plurality of groups and are distributed in a circular array, and the vehicle body 1 is also provided with a vertical driving mechanism 3, an oblique driving mechanism 4 and a liquid injection mechanism 5;

[0035] The vertical driving mechanism 3 includes a mounting frame 31 for mounting the insertion pin 2 and a main hydraulic cylinder 32 for driving the mounting frame 31 to move vertically. The vertical driving mechanism 3 is used to drive the insertion pin 2 to move vertically.

[0036] The oblique driving mechanism 4 comprises a secondary hydraulic cylinder 41 fixed on the mounting frame 31, and the oblique driving mechanism 4 is used to drive the insertion pin 2 to move obliquely;

[0037] The pin 2 is hollow and has a drainage hole group at the bottom. The injection mechanism 5 includes a water tank 51 for storing solvent and a water pump 52 for delivering solvent. The injection mechanism 5 is used to output the solvent to the end of the pin 2.

[0038] After the vehicle body 1 moves, the mounting bracket 31 is positioned directly above the plant. The vertical driving mechanism 3 operates, forcing the needle 2 to move to the ground around the plant. Subsequently, the oblique driving mechanism 4 and the liquid injection mechanism 5 operate. The oblique driving mechanism 4 forces the needle to be obliquely inserted into the soil directly below the plant. At the same time, the liquid injection mechanism 5 transports the solvent to the end of the needle 2, forcing the solvent to penetrate into the soil. After that, the oblique driving mechanism 4 and the vertical driving mechanism 3 operate in sequence to force the needle 2 to be pulled out and hover around the plant. The liquid injection mechanism 5 operates again to spray the solvent through the end of the needle 2 onto the base of the plant rhizome;

[0039] Among them, this device is used for the prevention and control of soil pests and diseases during the live sowing period of corn seedlings. The solvent is specifically formulated according to the types of pests and is pre-filled in the water tank 51. A handle is provided on the vehicle body 1, and the operator pushes the vehicle body 1 through the handle. The mounting bracket 31 is arranged on the side of the vehicle body 1 close to the handle so that the operator can observe the position of the mounting bracket 31 and the corn seedlings during use. The needle 2 is made of steel, and the number of needles 2 is preferably set to 5. The inner diameter of the mounting bracket 31 is larger than the diameter of the corn seedlings;

[0040] During use, first move the vehicle body 1 so that the mounting bracket 31 is positioned directly above the corn seedlings. Subsequently, start the vertical driving mechanism 3. When the vertical driving mechanism 3 operates, it forces the mounting bracket 31 and the needle 2 on the mounting bracket 31 to move downward, and finally the mounting bracket 31 is sleeved outside the corn seedlings. The bottom end of the mounting bracket 31 fits the ground. At this time, the bottom end of the needle 2 is inclined and pointed at the soil directly below the seedling. Subsequently, start the oblique driving mechanism 4 and the liquid injection mechanism 5. When the oblique driving mechanism 4 operates, it forces multiple needles 2 to move obliquely simultaneously, causing the needles 2 to be obliquely inserted into the soil. Finally, the bottom ends of multiple needles 2 all move to directly below the seedling. And when inserting into the soil, the liquid injection mechanism 5 outputs the solvent to the bottom end of the needle 2, causing the solvent to be sprayed out through the bottom end of the needle 2 and then penetrate into the soil. At this time, the soil around and below the seedling is permeated with the medicament, which can comprehensively protect the seedling roots and isolate pests in the soil. If there are pest problems at the base of the seedling rhizome, then after irrigating the soil with the medicament, start the oblique driving mechanism 4 and the liquid injection mechanism 5 again, control the needle 2 to hover around the seedling and the bottom end points at the base of the seedling rhizome. Subsequently, start the liquid injection mechanism 5, and spray the medicament onto the base of the seedling rhizome through the needle 2 to kill the pests attached to the base of the rhizome;

[0041] By setting the pin 2, the vertical driving mechanism 3, the oblique driving mechanism 4 and the liquid injection mechanism 5, when in use, first use the vertical driving mechanism 3 to drive the pin 2 to move to the ground around the seedling, and then use the oblique driving mechanism 4 to drive the pin 2 to obliquely insert into the soil at the bottom of the seedling. At the same time, the liquid injection mechanism 5 makes the bottom end of the pin 2 spray the medicament. At this time, the medicament can penetrate into the soil around the seedling and the local area at the same time, forming a more perfect protection area, improving the control effect on pests in the soil, and using the vertical driving mechanism 3 and the oblique driving mechanism 4 can also drive the oblique needle to hover around the seedling and then point to the base of the seedling root. Once again, use the liquid injection mechanism 5 to spray the medicament on the base of the seedling root, which is beneficial to killing the existing pests and can efficiently deal with the soil diseases and insect pests in the maize seedling stage.

[0042] Embodiment 2: Refer to Figures 1 - 4 , different from the above embodiment, the mounting frame 31 is arranged inside the vehicle body 1. The mounting frame 31 includes a horizontally arranged lower annular plate 311 and an upper annular plate 312. A plurality of connecting rods 313 are fixed between the upper annular plate 312 and the lower annular plate 311. The main hydraulic cylinder 32 is fixed on the vehicle body 1. The output end of the main hydraulic cylinder 32 is vertically downward and is fixed with a pressure sensor 33. The bottom of the pressure sensor 33 is fixed with a connecting plate 34. One end of the connecting plate 34 is fixedly connected to the top of the upper annular plate 312. The pin 2 is installed on the top of the lower annular plate 311.

[0043] Among them, the upper annular plate 312 and the lower annular plate 311 are concentric and of the same size. The connecting rods 313 are vertically arranged and are respectively fixed to the upper annular plate 312 and the lower annular plate 311 at both ends. A plurality of connecting rods 313 are arranged in a circular array. The main hydraulic cylinder 32, the pressure sensor 33 and the connecting plate 34 are all preferably two groups and are symmetrically distributed. The connecting plate 34 is fixed on the bearing surface of the pressure sensor 33;

[0044] When in use, when the main hydraulic cylinder 32 operates and extends, it drives the pressure sensor 33 to move downward. When the pressure sensor 33 moves downward, it drives the connecting plate 34 to move downward. When the connecting plate 34 moves downward, it drives the upper annular plate 312, the connecting rods 313 and the lower annular plate 311 to move downward. The plurality of pins 2 installed on the lower annular plate 311 move downward accordingly. When the lower annular plate 311 contacts the ground, the pressure sensor 33 monitors an increase in pressure, and then controls the main hydraulic cylinder 32 to stop extending. Similarly, when the main hydraulic cylinder 32 contracts, it drives the mounting frame 31 and the pins 2 on the mounting frame 31 to move vertically upward;

[0045] By setting up the vertical driving mechanism 3, the main hydraulic cylinder 32 is started. The telescopic movement of the main hydraulic cylinder 32 is used to drive the mounting frame 31 to move vertically, and then the vertical movement of the pin 2 on the mounting frame 31 is controlled, so as to adjust the height of the pin 2, making the pin 2 adapt to different pest control requirements. The pressure sensor 33 can also be used to monitor that the mounting frame 31 touches the bottom, and then control the main hydraulic cylinder 32 to stop operating, avoiding damage to the mounting frame 31 after excessive extrusion of the mounting frame 31.

[0046] Embodiment 3. Refer to Figures 3 - 8 , which is different from the above embodiment in that a plurality of base blocks 314 distributed in a circular array are fixed on the top of the lower annular plate 311. An inclined chute 315 is arranged on the base block 314. The bottom end of the inclined chute 315 faces the center of the lower annular plate 311. An inclined slider 316 is slidably connected inside the inclined chute 315. The pin 2 passes through the inclined slider 316 and is fixed to the inclined slider 316. The pin 2 is in the same direction as the inclined chute 315. The inclined driving mechanism 4 further includes a movable ring 42 arranged inside the mounting frame 31. The auxiliary hydraulic cylinder 41 is vertically arranged and fixed on the top of the mounting frame 31. The output end of the auxiliary hydraulic cylinder 41 is fixedly connected to the top of the movable ring 42. A plurality of laterally arranged transverse slide rails 43 are fixed to the bottom of the movable ring 42. The plurality of transverse slide rails 43 are distributed in a circular array. A transverse slider 44 is slidably connected to the transverse slide rail 43. A vertical rod 45 is fixedly connected to the bottom of the transverse slider 44. The vertical rod 45 is fixed to the inclined slider 316. A return spring 46 is fixedly connected to the inner wall of one end of the transverse slide rail 43 close to the center of the movable ring 42. The other end of the return spring 46 is fixedly connected to the transverse slider 44.

[0047] Among them, the movable ring 42 is located between the upper annular plate 312 and the lower annular plate 311. In the initial state, the inclined slider 316 is located at the top end of the inclined chute 315. The auxiliary hydraulic cylinder 41 is preferably set to 3. When in use, after the auxiliary hydraulic cylinder 41 operates and extends, it pushes the movable ring 42 to move downward. When the movable ring 42 moves downward, it drives a plurality of transverse slide rails 43 to move downward. The transverse slide rails 43 push the transverse slider 44, the vertical rod 45 and the inclined slider 316. When the inclined slider 316 receives a vertical thrust, it slides along the inclined chute 315, driving the pin 2 to move obliquely, so that the bottom end of the pin 2 is obliquely inserted into the soil. At the same time, when the inclined slider 316 moves, it drives the vertical rod 45 and the transverse slider 44 to move, so that the position of the transverse slider 44 in the transverse slide rail 43 changes, and then the return spring 46 is compressed. When the auxiliary hydraulic cylinder 41 moves upward, the elastic force of the return spring 46 pushes the transverse slider 44 to reset, and then drives the vertical rod 45 and the inclined slider 316 to reset, and finally pulls out the pin 2 in the soil;

[0048] By setting the auxiliary hydraulic cylinder 41, when the auxiliary hydraulic cylinder 41 expands and contracts, it pushes the movable ring 42 to move vertically. Subsequently, a plurality of inclined sliders 316 can be simultaneously driven to move along the inclined chutes 315, thereby driving the inclined needles to be inserted obliquely into the soil. This method has a high degree of automation and is beneficial to driving the inclined needles to inject liquid medicine obliquely, enabling the liquid medicine to be evenly distributed not only around the corn seedlings but also directly below the corn seedlings, improving the pest control effect. By setting the return spring 46, the elastic force of the return spring 46 can facilitate the extraction of the injection needle 2 after the medicine filling is completed.

[0049] Embodiment 4. Refer to Figures 2 - 6 , different from the above embodiment, the water tank 51 is fixed inside the vehicle body 1, the water pump 52 is fixed on the inner wall of the water tank 51, the output end of the water pump 52 is fixed with a main output pipe 53, one end of the main output pipe 53 penetrates to the outside of the water tank 51 and is fixed with an annular pipe 54, the annular pipe 54 is fixedly sleeved on the outer edge of the upper annular plate 312, a plurality of uniformly distributed auxiliary output pipes 55 are fixed on the annular pipe 54, the end of the auxiliary output pipe 55 far from the annular pipe 54 is fixed to the side wall of the top end of the injection needle 2, the drainage hole group at the bottom end of the injection needle 2 includes a lower through hole 21 opened on the bottom end surface of the injection needle 2 and a side through hole 22 opened on the side surface of the bottom end of the injection needle 2, and a control assembly 6 is further arranged on the injection needle 2, and the control assembly 6 is used to control the opening and closing of the lower through hole 21 and the side through hole 22. The control assembly 6 includes a push hydraulic cylinder 61 fixed to the top end of the injection needle 2, the output end of the push hydraulic cylinder 61 is fixed with a base shaft 62, the base shaft 62 penetrates the top end of the injection needle 2 and is inserted into the injection needle 2, one end of the base shaft 62 located inside the injection needle 2 is fixed with a sealing block 63, a connection hole 64 is opened on the sealing block 63, and the position of the connection hole 64 is staggered from that of the lower through hole 21.

[0050] Among them, the water tank 51 is provided with a water inlet and a drain outlet, which are respectively used for injecting medicine and discharging medicine. The main output pipe 53 and the auxiliary output pipes 55 are both set as flexible hoses, the annular pipe 54 is set as an aluminum alloy hard pipe, the number of the auxiliary output pipes 55 is the same as that of the injection needles 2 and they are in one-to-one correspondence. The side through holes 22 are preferably set to two. The side wall of the sealing block 63 is closely attached to the inner cavity of the injection needle 2. In the initial state, the sealing block 63 is located between the lower through hole 21 and the side through hole 22, and the bottom end of the sealing block 63 is close to the lower through hole 21;

[0051] During use, when the inclined needle is inserted obliquely into the soil, after the water pump 52 is started, the medicament in the water tank 51 is pumped into the main output pipe 53, then enters the insertion needle 2 through the annular pipe 54 and a plurality of auxiliary output pipes 55, and finally is discharged through the side through holes 22 at the end of the insertion needle 2. When the solution is discharged from the side through holes 22, it diffuses to both sides of the moving path and also gradually penetrates downward, increasing the effective action area of the liquid medicine. Moreover, the side through holes 22 are not easily blocked during the process of inserting the insertion needle 2 into the soil. When it is necessary to spray the medicament on the root base of the corn seedling, the pushing hydraulic cylinder 61 is started. After the pushing hydraulic cylinder 61 contracts, it drives the base shaft 62 to move. After the base shaft 62 moves, it drives the sealing block 63 to move. After the sealing block 63 moves, it uses the side wall to block the side through holes 22 and at the same time disengages from the lower through hole 21. At this time, when the water pump 52 is started, the liquid medicine in the insertion needle 2 is discharged through the connection hole 64 and the lower through hole 21. When the liquid medicine is sprayed, it is in the same direction as the insertion needle 2 and directly shoots at the root base of the corn seedling;

[0052] By providing the control assembly 6 on the insertion needle 2, it is beneficial to control the opening and closing of the lower through hole 21 and the side through hole 22, thereby meeting different usage requirements.

[0053] Embodiment Five, refer to Figure 3 、 Figure 9 and Figure 10 and, different from the above embodiments, a leaf bundling assembly 7 is provided on the lower annular plate 311. The leaf bundling assembly 7 includes an elastic ring 71 located inside the lower annular plate 311 and capable of stretching. When spraying the solvent on the root base of the plant, the leaf bundling assembly 7 pre-binds the leaves of the plant through the stretching of the elastic ring 71. An annular groove 317 is provided on the outer edge of the lower annular plate 311, and a plurality of uniformly distributed radial through holes 318 are provided on the inner wall of the annular groove 317. The leaf bundling assembly 7 further includes a rotating ring 76 and a motor 72. The rotating ring 76 is rotatably connected to the outer edge of the lower annular plate 311. A plurality of pull ropes 73 are fixed to the inner side of the rotating ring 76. The pull ropes 73 sequentially pass through the annular groove 317 and the radial through holes 318 and are fixed to the elastic ring 71. An arc-shaped rack 74 is also fixed to the inner side of the rotating ring 76. The motor 72 is fixed to the top of the lower annular plate 311, and a driving gear 75 is fixed to the output shaft of the motor 72. The driving gear 75 meshes with the arc-shaped rack 74.

[0054] Among them, in the initial state, the elastic ring 71 is in a stretched state. When the installation ring is sleeved outside the corn seedling, the elastic ring 71 is also sleeved outside the corn seedling. Subsequently, the motor 72 is started, which drives the driving gear 75 to rotate. When the driving gear 75 rotates, it drives the arc-shaped rack 74, causing the arc-shaped rack 74 and the rotating ring 76 to rotate. When the rotating ring 76 rotates, the pulling rope 73 is released, and the elastic ring 71 contracts smaller under the elastic force and pulls multiple pulling ropes 73. Finally, the contracted elastic ring 71 is close to the root of the corn seedling. When it is necessary to spray the medicine on the root base of the corn seedling, the vertical driving mechanism 3 first drives the mounting frame 31 and the insertion needle 2 to move upward. At this time, the elastic ring 71 also moves upward accordingly, and the unfolded leaves of the corn seedling contract under the restraint of the elastic ring 71. After reaching the appropriate position, the medicine is sprayed on the root base of the seedling;

[0055] By setting the leaf-binding assembly 7, the leaves of the corn seedling can be briefly bound in advance before spraying the medicine on the root base of the corn seedling, avoiding the spraying trajectory of the liquid medicine being blocked by the leaves, ensuring that the liquid medicine stably adheres to the root base, and having stronger applicability.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for controlling pests and diseases in corn growing soil, comprising a vehicle body, characterized in that: The vehicle body is provided with obliquely arranged plug pins, which are arranged in multiple groups and distributed in a circular array. The vehicle body is also provided with a vertical drive mechanism, an oblique drive mechanism and a liquid injection mechanism; The vertical driving mechanism comprises a mounting frame for mounting the pin and a main hydraulic cylinder for driving the mounting frame to move vertically, and the vertical driving mechanism is used to drive the pin to move vertically; The oblique driving mechanism comprises a secondary hydraulic cylinder fixed on the mounting frame, and the oblique driving mechanism is used to drive the insertion pin to move obliquely; The pin is hollow and has a drainage hole group at the bottom. The injection mechanism includes a water tank for storing solvent and a water pump for delivering solvent. The injection mechanism is used to output the solvent to the end of the pin. After the vehicle body moves, the mounting frame is located directly above the plant, and the vertical drive mechanism operates to force the pin to move to the ground around the plant. Then the oblique drive mechanism and the injection mechanism operate, and the oblique drive mechanism forces the pin to be inserted obliquely into the soil directly below the plant. At the same time, the injection mechanism transports the solvent to the end of the pin, forcing the solvent to penetrate into the soil. After that, the oblique drive mechanism and the vertical drive mechanism operate in sequence to force the pin to be pulled out and hover around the plant. The injection mechanism operates again to spray the solvent through the end of the pin to the base of the plant's rhizome.

2. The device for controlling pests and diseases in corn growing soil according to claim 1, characterized in that: The mounting frame is arranged on the inner side of the vehicle body, and the mounting frame includes a lower annular plate and an upper annular plate which are arranged horizontally, and a plurality of connecting rods are fixed between the upper annular plate and the lower annular plate, and the master hydraulic cylinder is fixed on the vehicle body, and the output end of the master hydraulic cylinder is vertically downward and is fixed with a pressure sensor, and a connecting plate is fixed at the bottom of the pressure sensor, and one end of the connecting plate is fixedly connected to the top of the upper annular plate, and the pin is installed on the top of the lower annular plate.

3. The device for controlling pests and diseases in corn growing soil according to claim 2, characterized in that: A plurality of base blocks distributed in a circular array are fixed on the top of the lower annular plate, an oblique slide groove is arranged on the base block, the bottom end of the oblique slide groove faces the center of the lower annular plate, an oblique slider is slidably connected inside the oblique slide groove, the insertion pin passes through the oblique slider and is fixed to the oblique slider, and the insertion pin is consistent with the direction of the oblique slide groove.

4. The device for controlling pests and diseases in corn growing soil according to claim 3, characterized in that: The oblique driving mechanism also includes a movable ring arranged on the inner side of the mounting frame, the auxiliary hydraulic cylinder is vertically arranged and fixed on the top of the mounting frame, the output end of the auxiliary hydraulic cylinder is fixedly connected to the top of the movable ring, a plurality of radially arranged transverse slide rails are fixed to the bottom of the movable ring, and the plurality of transverse slide rails are distributed in a ring array, a transverse slider is slidably connected to the transverse slide rail, a vertical rod is fixedly connected to the bottom of the transverse slider, and the vertical rod is fixedly connected to the oblique slider.

5. The device for controlling pests and diseases in corn growing soil according to claim 4, characterized in that: A return spring is fixedly connected to the inner wall of one end of the transverse slide rail close to the center of the movable ring, and the other end of the return spring is fixedly connected to the transverse slide block.

6. The device for controlling pests and diseases in corn growing soil according to claim 2, characterized in that: The water tank is fixed in the vehicle body, the water pump is fixed on the inner wall of the water tank, a main output pipe is fixed on the output end of the water pump, one end of the main output pipe passes through the outside of the water tank and is fixed with an annular tube, the annular tube is fixedly sleeved on the outer edge of the upper annular plate, a plurality of evenly distributed auxiliary output pipes are fixed on the annular tube, and the auxiliary output pipes are fixed to the side wall of the top end of the pin away from one end of the annular tube.

7. The device for controlling pests and diseases in corn growing soil according to claim 1, characterized in that: The drainage hole group at the bottom end of the pin includes a lower through hole opened on the end surface of the bottom end of the pin and a side through hole opened on the side surface of the bottom end of the pin. The pin is also provided with a control component, and the control component is used to control the opening and closing of the lower through hole and the side through hole. The control component includes a push hydraulic cylinder fixed to the top end of the pin, and a base shaft is fixed to the output end of the push hydraulic cylinder. The base shaft passes through the top end of the pin and is plugged into the inside of the pin. A sealing block is fixed at one end of the base shaft located inside the pin, and a connecting hole is opened on the sealing block, and the connecting hole is staggered with the position of the lower through hole.

8. The device for controlling pests and diseases in corn growing soil according to claim 2, characterized in that: The lower annular plate is provided with a leaf-binding assembly, which includes an elastic ring located on the inner side of the lower annular plate and capable of expansion and contraction. When the solvent is sprayed on the base of the plant's rhizome, the leaf-binding assembly pre-binds the plant's leaves through the expansion and contraction of the elastic ring.

9. The device for controlling pests and diseases in corn growing soil according to claim 8, characterized in that: An annular groove is provided on the outer edge of the lower annular plate, and a plurality of evenly distributed radial through holes are provided on the inner wall of the annular groove. The beam blade assembly also includes a rotating ring and a motor. The rotating ring is rotatably connected to the outer edge of the lower annular plate. A plurality of pull ropes are fixed to the inner side of the rotating ring. The pull ropes pass through the annular groove and the radial through holes in sequence and are fixedly connected to the elastic ring. An arc-shaped rack is also fixed to the inner side of the rotating ring. The motor is fixed on the top of the lower annular plate. A driving gear is fixed to the motor output shaft, and the driving gear is meshed with the arc-shaped rack.

10. A method for controlling pests and diseases in corn growing soil, characterized by: The method for controlling pests and diseases in corn-growing soil uses a device for controlling pests and diseases in corn-growing soil as described in any one of claims 1-9.

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