Sunflower seeder

Abstract

The invention belongs to the technical field of sunflower planting devices, and particularly relates to a sunflower seeder which comprises a seeder mounting frame, a seeding device, an adjustable plough share device, a fertilizing device and a soil detection device, the seeding device comprises a seed storage box, blanking pipes and a seeding disc, the bottom of the seed storage box is provided with a plurality of blanking pipes, the bottom of each blanking pipe is provided with a transfer pipe, the seeding disc is fixed on the lower part of the left side of each blanking pipe, each transfer pipe is an inclined L-shaped pipe body, and the transfer pipes are leftwards communicated with the seeding disc; the adjustable plough share device comprises a ditching plough share, a fixing frame, a driving motor and a transmission shaft; the fixing frame is welded on the seeder mounting frame; according to the scheme, the seeding condition can be changed in real time according to the condition of soil, the seeder has high seeding efficiency, and by adjusting the working parameters of the seeding device, the adjustable plough share device and the fertilizing device, the seeder can adapt to the seeding requirements of different crops to a certain extent, and has certain universality and flexibility.

Description

Technical Field

[0001] The present invention relates to the technical field of sunflower planting devices, and particularly to a sunflower seeder. Background Technique

[0002] Sunflowers are flowers with strong ornamental value and are easy to plant. In traditional sowing methods, the soil texture, humidity, fertility and other conditions vary greatly in different plots. Ordinary sowing equipment is difficult to adapt, and there will be a situation where the soil cannot supply enough nutrients to the seeds after sowing, resulting in a decrease in the survival rate of the seeds. At the same time, there are problems such as too much or too little fertilization amount and inaccurate fertilization position in the previous fertilization, which will further reduce the survival rate of the seeds. The subsequent replanting and topdressing not only waste time but also further increase the planting cost. For this reason, we propose a sunflower seeder to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a sunflower seeder to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A sunflower seeder includes a seeder mounting frame, a sowing device, an adjustable plowshare device, a fertilization device and a soil detection device; The sowing device includes a seed storage box, a feeding pipe and a sowing disk. A plurality of feeding pipes are provided at the bottom of the seed storage box. A transfer pipe is provided at the bottom of the feeding pipe. The sowing disk is fixed to the lower left side of the feeding pipe. The transfer pipe is an inclined L-shaped pipe body, and the transfer pipe communicates with the sowing disk to the left; The adjustable plowshare device includes a ditching plowshare, a fixing frame, a driving motor and a transmission shaft; the fixing frame is welded to the seeder mounting frame. A plurality of ditching plowshares are provided and are horizontally installed on the fixing frame; a driven rack is welded to the top of the ditching plowshare, and the driving motor drives the driven rack to move up and down through the transmission shaft, thereby adjusting the height of the ditching plowshare; The fertilization device includes a water and fertilizer tank and a fertilization mechanism. The fertilization mechanism includes a transfer tank, a discharge valve, a delivery pipe, a fertilizer pump and a fertilizer spray head. The transfer tank is installed at the rear side of the feeding pipe. An input port is opened on the right side of the transfer tank, and liquid fertilizer is injected into the transfer tank through the input port; the water and fertilizer tank transports liquid fertilizer to the transfer tank through a feeding pump and a feeding pipe; the spray port of the fertilizer spray head is inclined downward towards the lower part of the blanking conduit.

[0005] Preferably, the main body of the seeder mounting frame is a square vehicle frame, and wheels are provided at both the front end and the rear end. A tractor is provided between the seeder mounting frame and the soil detection device, and the seeder mounting frame is installed at the rear side of the tractor.

[0006] Preferably, a soil covering plowshare is horizontally installed in the middle of the bottom of the seeder mounting frame. The soil covering plowshare is located at the rear side of the furrowing plowshare and is used for covering seeds. A press wheel is horizontally installed at the rear end of the seeder mounting frame.

[0007] Preferably, the inner cavity of the sowing disc is divided into a grasping cavity and a blanking cavity. The grasping cavity is arranged on the left side and is communicated with the transfer pipe. The grasping cavity receives the seeds conveyed by the transfer pipe. A turntable is arranged in the grasping cavity. Finger grippers are arranged around the turntable with the turntable as the center. Clamping pieces are arranged at the ends of the finger grippers. The clamping pieces are inclined outwards, so that an included angle with one wide end and one narrow end is formed between the clamping pieces and the inner wall of the sowing disc. When the turntable rotates, the finger grippers are used to clamp single seeds, and then the finger grippers rotate synchronously with the turntable.

[0008] Preferably, a blanking hole communicating with the blanking cavity is opened on one side of the top of the grasping cavity. An inclined downward blanking channel is arranged in the blanking cavity. A blanking conduit is installed at the rear side of the bottom of the sowing disc, and the top of the blanking conduit is communicated with the blanking channel. The blanking conduit is inclined backward, and a blanking sensor is installed in the upper part of the inner cavity of the blanking conduit. When the seeds pass through the blanking sensor, they will be sensed. A rotating motor is installed in the middle of the left side of the sowing disc. A driving shaft is installed on the turntable, and the left end of the driving shaft is connected with the transmission end of the rotating motor.

[0009] Preferably, an extension pipe is installed at the bottom of the transfer storage box. A flow meter is installed at the rear side of the extension pipe to monitor the fertilization amount of each fertilizing nozzle. An outlet valve is installed at the bottom of the extension pipe. The outlet valve is an electric control valve to control the runoff of the extension pipe. A fertilizing pump is installed at the top of the fertilizing nozzle. A delivery pipe is installed between the fertilizing nozzle and the extension pipe. The fertilizing pump is an intermittent pump.

[0010] Preferably, the soil detection device includes a mounting frame, a hydraulic adjusting rod, a fixed shaft, a guide wheel, a detection disc, a battery sleeve and a wireless control box. The mounting frame consists of two L-shaped support rods symmetrically arranged on the left and right. Hydraulic adjusting rods are symmetrically installed at the top of the mounting frame. The hydraulic adjusting rods and the other ends of the mounting frame are respectively fixed on the vehicle body of the tractor. The hydraulic adjusting rods adjust the pitching angle of the mounting frame by telescoping. A fixed shaft is sleeved at the rear end of the top of the mounting frame to assist the mounting frame in rotating. Brush boxes are symmetrically installed on the left and right sides of the bottom of the fixed shaft. The brush boxes are U-shaped with the opening downward, and bristles and paddles are distributed in the brush boxes.

[0011] Preferably, a support shaft is rotatably installed at the bottom of the mounting frame. Guide wheels are symmetrically installed at the left and right ends of the support shaft. A battery sleeve is sleeved in the middle of the support shaft. The battery sleeve is fixed to the support shaft by bolts, and a lithium battery is filled in the battery sleeve. Detection discs are symmetrically sleeved on the left and right sides of the support shaft. The diameter of the detection disc is slightly smaller than the diameter of the guide wheel, and the detection disc is also fixed to the support shaft by bolts and moves synchronously with the support shaft.

[0012] Preferably, a plurality of detection probes are arranged around the center of the detection disk, the detection probes extend outwards, and a plurality of detection rings are axially arranged outside the detection probes; a buffer cavity is arranged between the top of the detection disk and the bottom of the detection probes, a buffer spring is arranged in the buffer cavity, a rubber connecting part is arranged at the top of the buffer spring, and the top of the rubber connecting part is fixed to the detection probe; the detection probe corresponds to the brush box, when the detection probe moves upwards, it passes through the inside of the brush box, and the bristles and elastic pieces in the brush box can brush off the soil on the detection probe; a wireless control box is installed between the two mounting brackets.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This solution can change the sowing conditions in real time according to the soil conditions, has high sowing efficiency, and by adjusting the working parameters of the sowing device, adjustable plowshare device and fertilizing device, this seeder can adapt to the sowing requirements of different crops to a certain extent, and has a certain degree of versatility and flexibility; The soil detection device detects in real time, regulates the ditching depth and fertilizing amount according to the real-time monitoring data, the fertilizer pump is synchronized with the material dropping, improves the fertilizer efficiency, and increases the seed survival rate; Precisely fertilize according to the sowing situation, and can accurately control the fertilizing amount and fertilizing position through the feeding pump, discharge valve, etc., so that the fertilizer is concentrated near the seeds, improves the fertilizer utilization rate, and reduces waste and environmental pollution. Description of the Drawings

[0014] Figure 1 It is the front view of the tractor carrying the seeder and the soil detection device of the present invention; Figure 2 It is the side view of the tractor carrying the seeder and the soil detection device of the present invention; Figure 3 It is the schematic diagram of the seeder after removing the water and fertilizer tank of the present invention; Figure 4 It is the front view of the seeder of the present invention; Figure 5 It is the side view of the seeder of the present invention; Figure 6 It is the schematic diagram of the adjustable plowshare device of the present invention; Figure 7 It is the schematic diagram of the sowing device and the fertilizing mechanism of the present invention; Figure 8 It is the left view of the sowing device and the fertilizing mechanism of the present invention; Figure 9 It is the partial enlarged view of the sowing device and the fertilizing mechanism of the present invention; Figure 10 It is the cross-sectional view of the sowing disk of the present invention; Figure 11Schematic diagram of the turntable of the present invention; Figure 12 Schematic diagram of the soil detection device of the present invention; Figure 13 Schematic diagram of the detection probe and buffer spring of the present invention.

[0015] In the figure: 10 seeder mounting frame, 101 soil covering plowshare, 102 press wheel; 20 seeding device, 201 seed storage box, 202 feeding pipe, 203 seeding tray, 204 blanking conduit, 205 blanking sensor, 206 adapter pipe, 207 grasping cavity, 208 turntable, 209 drive shaft, 210 finger gripper, 211 blanking hole, 212 blanking channel; 30 adjustable plowshare device, 301 furrowing plowshare, 302 fixing frame, 303 mounting groove, 304 driving gear, 305 driving motor, 306 transmission shaft, 307 driven rack; 40 fertilizing device, 401 water and fertilizer tank, 402 feeding pump, 403 input port, 404 flow meter, 405 discharge valve, 406 conveying pipe, 407 fertilizing pump, 408 fertilizing nozzle, 409 transfer storage box; 50 soil detection device, 501 mounting frame, 502 hydraulic adjusting rod, 503 fixed shaft, 504 guide wheel, 505 detection disk, 506 detection probe, 507 battery sleeve, 508 wireless transceiver, 509 wireless control box, 510 brush box, 511 detection ring, 512 buffer spring, 513 rubber connecting part; 60 tractor. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0018] Embodiment: Please refer to Figures 1-13, the present invention provides the following technical solution: A sunflower seeder, comprising a seeder mounting frame 10, a seeding device 20, an adjustable plowshare device 30, a fertilizing device 40, and a soil detection device 50; The adjustable plowshare device 30 is installed on the front side of the seeder mounting frame 10, the seeding device 20 is installed on the front side of the middle part of the seeder mounting frame 10, and the seeding device 20 is located behind the adjustable plowshare device 30. The fertilizing device 40 is installed on the rear side of the middle part of the seeder mounting frame 10; A covering plowshare 101 is horizontally installed in the middle of the bottom of the seeder mounting frame 10. The covering plowshare 101 is arranged behind the furrowing plowshare 301. When the covering plowshare 101 passes by, it reversely stirs the soil ridge formed by the furrowing plowshare 301 to cover the seeds. A rolling press wheel 102 extending backward is horizontally installed at the rear end of the seeder mounting frame 10. The rolling press wheel 102 is a row of parallel rollers. When the rolling press wheel 102 passes by, it flattens the soil surface; The main body of the seeder mounting frame 10 is a square vehicle frame. Wheels are provided at both the front end and the rear end of the seeder mounting frame 10. The seeder mounting frame 10 is installed on the rear side of a tractor 60 forward, and the movement of the seeder mounting frame 10 is assisted by the wheels; The seeding device 20 includes a seed storage box 201, a blanking pipe 202, and a seeding disk 203. A plurality of blanking pipes 202 are provided at the bottom of the seed storage box 201, and a transfer pipe 206 is provided at the bottom of the blanking pipe 202. The seeding disk 203 is fixed to the lower left side of the blanking pipe 202. The transfer pipe 206 is an inclined L-shaped pipe body, and the transfer pipe 206 communicates with the seeding disk 203 to the left. Seeds are conveyed into the grasping cavity 207 under the action of gravity through the blanking pipe 202 and the transfer pipe 206; The inner cavity of the seeding disk 203 is divided into a grasping cavity 207 and a blanking cavity. The grasping cavity 207 is arranged on the left side, and the grasping cavity 207 communicates with the transfer pipe 206. The grasping cavity 207 receives the seeds conveyed by the transfer pipe 206. A turntable 208 is arranged in the grasping cavity 207. Finger grippers 210 are arranged around the turntable 208 as the center. Clamping pieces are arranged at the ends of the finger grippers 210. The clamping pieces are inclined outward, so that an included angle with one end wide and one end narrow is formed between the clamping pieces and the inner wall of the seeding disk 203. When the turntable 208 rotates, the finger grippers 210 clamp single seeds, and then the finger grippers 210 rotate synchronously with the turntable 208; A blanking hole 211 communicating with the blanking cavity is opened on one side of the top of the grasping cavity 207. An inclined downward blanking channel 212 is arranged in the blanking cavity. A blanking conduit 204 is installed at the rear side of the bottom of the seeding disk 203, and the top of the blanking conduit 204 communicates with the blanking channel 212. When the finger grippers 210 carry the seeds through the blanking hole 211, the seeds fall to the ground along the blanking channel 212 and the blanking conduit 204; The blanking conduit 204 inclines backward, and a blanking sensor 205 is installed in the upper part of the inner cavity of the blanking conduit 204. When seeds pass through the blanking sensor 205, they will be sensed; A rotary motor is installed in the middle of the left side of the sowing disc 203. A drive shaft 209 is installed on the turntable 208, and the left end of the drive shaft 209 is connected to the transmission end of the rotary motor. The rotary motor provides a power source for the turntable 208; The rotary motors of each sowing disc 203 can be controlled individually or synchronously; The adjustable plowshare device 30 includes a ditching plowshare 301, a fixing frame 302, a drive motor 305 and a transmission shaft 306. The fixing frame 302 is welded to the sower mounting frame 10. There are multiple ditching plowshares 301, and the multiple ditching plowshares 301 are horizontally installed on the fixing frame 302; A driven rack 307 extending upward is welded to the top of the ditching plowshare 301. Teeth are arranged on the front side of the driven rack 307. The driven rack 307 is movably inserted upward into the fixing frame 302. Installation slots 303 are opened at positions of the fixing frame 302 close to the driven rack 307, and the driven rack 307 is inserted into the rear side position of the installation slot 303; A transmission shaft 306 is horizontally inserted into the fixing frame 302, and the transmission shaft 306 is located in front of the driven rack 307. Driving gears 304 are installed at positions of the transmission shaft 306 close to the driven rack 307, and the driving gears 304 mesh with the driven rack 307 backward. When the driving gears 304 rotate with the transmission shaft 306, they drive the driven rack 307 to move up and down, and correspondingly drive the ditching plowshare 301 to be adjusted up and down; A drive motor 305 is installed on the right side of the fixing frame 302, and the transmission end of the drive motor 305 is fixed to the transmission shaft 306 to the left. The drive motor 305 provides a power source for the transmission shaft 306; The fertilizing device 40 includes a water and fertilizer tank 401 and a fertilizing mechanism. Liquid fertilizer is poured into the water and fertilizer tank 401. A feeding pump 402 is installed on the front side of the water and fertilizer tank 401. The input end of the feeding pump 402 extends into the inner cavity of the water and fertilizer tank 401. The output end of the feeding pump 402 is installed with a feeding pipe. The feeding pipe is provided with a plurality of adapters, and the adapters are respectively connected to each input port 403; The fertilizing mechanism includes a transfer tank 409, a discharge valve 405, a delivery pipe 406, a fertilizing pump 407 and a fertilizing nozzle 408. The transfer tank 409 is installed at the rear side of the blanking pipe 202. An input port 403 is opened on the right side of the transfer tank 409. Liquid fertilizer (i.e., water and fertilizer) is injected into the transfer tank 409 through the input port 403. The advantage of using liquid fertilizer is fast absorption and integrated irrigation and fertilization operation; The fertilizer sprayer 408 is fixed to the bottom of the sowing tray 203. The fertilizer sprayer 408 is parallel to the blanking conduit 204, and the nozzle of the fertilizer sprayer 408 is inclined downward towards the lower part of the blanking conduit 204. An extension pipe is installed at the bottom of the transfer box 409. A flow meter 404 is installed at the rear side of the extension pipe to monitor the fertilizer application amount of each fertilizer sprayer 408. An outlet valve 405 is installed at the bottom of the extension pipe. The outlet valve 405 is an electric control valve to control the runoff of the extension pipe discharging materials. A fertilizer pump 407 is installed at the top of the fertilizer sprayer 408. A delivery pipe 406 is installed between the fertilizer sprayer 408 and the extension pipe. The fertilizer pump 407 is an intermittent pump, and its working time is synchronized with the detection signal of the blanking sensor 205. The soil detection device 50 is installed at the front side of the tractor 60, responsible for detecting the soil conditions passed by, and synchronizing the detection results with the working states of the adjustable plowshare device 30 and the fertilizer application device 40, controlling the ditching and fertilization through the real-time detection results, increasing the sowing survival rate, and achieving the purpose of high-efficiency sowing. The soil detection device 50 includes an installation frame 501, a hydraulic adjustment rod 502, a fixed shaft 503, a guide wheel 504, a detection disc 505, a battery sleeve 507, and a wireless control box 509. The installation frame 501 is two L-shaped support rods symmetrically arranged left and right. Hydraulic adjustment rods 502 are symmetrically installed at the top of the installation frame 501. The other ends of the hydraulic adjustment rods 502 and the installation frame 501 are respectively fixed to the vehicle body of the tractor 60. The hydraulic adjustment rods 502 adjust the pitching angle of the installation frame 501 by telescoping to lift or lower the soil detection device 50. A fixed shaft 503 is sleeved at the rear end of the top of the installation frame 501 to assist the installation frame 501 in rotating. Brush boxes 510 are symmetrically installed on the left and right sides at the bottom of the fixed shaft 503. The brush boxes 510 are U-shaped with openings downward, and bristles and paddles are distributed in the brush boxes 510. A support shaft is rotatably installed at the bottom of the installation frame 501. Guide wheels 504 are symmetrically installed at the left and right ends of the support shaft to assist in moving forward. A battery sleeve 507 is sleeved in the middle of the support shaft. The battery sleeve 507 is fixed to the support shaft by bolts, and several groups of lithium batteries are arranged in the battery sleeve 507 as the power source of the soil detection device 50. Detection discs 505 are symmetrically sleeved on the left and right sides of the support shaft. The diameter of the detection disc 505 is slightly smaller than the diameter of the guide wheel 504, and the detection disc 505 is also fixed to the support shaft by bolts and moves synchronously with the support shaft. The detection disc 505 is connected to the battery sleeve 507 by wires, and the wires are arranged through the inside of the support shaft to avoid being wound when the support shaft rotates. A plurality of detection probes 506 are arranged around the center of the detection disk 505. The detection probes 506 extend outwards, and a plurality of detection rings 511 are axially arranged outside the detection probes 506; A buffer cavity is arranged between the top of the detection disk and the bottom of the detection probe 506. A buffer spring 512 is arranged in the buffer cavity. A rubber connecting part 513 is arranged at the top of the buffer spring 512. The top of the rubber connecting part 513 is fixedly connected with the detection probe 506. When the detection probe 506 is subjected to a force exceeding the stiffness coefficient of the buffer spring 512, the detection probe 506 contracts inwards under the drive of the buffer spring 512 to prevent the detection probe 506 from being broken, and the rubber connecting part 513 can further play a role in shock absorption; The detection probe 506 corresponds to the brush box 510. When the detection probe 506 moves upwards, it passes through the inside of the brush box 510. The bristles and elastic flappers in the brush box 510 can brush off the soil on the detection probe 506 to facilitate continuous detection; A wireless control box 509 is installed between the two mounting brackets 501. The wireless control box 509 has its own power supply, and a wireless transceiver 508 is installed on the wireless control box 509. The wireless control box 509 is responsible for receiving the soil information detected by the detection probe 506, such as the temperature, humidity, pH value, etc. of the soil, and then judging whether to adjust the subsequent ditch opening and fertilization conditions according to the preset values to facilitate precise seeding.

[0019] The working principle of this solution is as follows: The soil detection device 50 is installed on the front side of the tractor 60. The hydraulic adjusting rod 502 can telescopically adjust the pitching angle of the mounting bracket 501 to lift or lower the detection device. The detection probe 506 on the detection disk 505 is inserted into the soil when rotating along with the support shaft, and the detection ring 511 detects information such as the temperature, humidity, pH value, etc. of the soil; When the detection probe 506 is subjected to a large force, the buffer spring 512 and the rubber connecting part 513 can make it contract inwards to prevent breakage. When the detection probe 506 moves upwards through the brush box 510, the bristles and flappers brush off the soil on its surface; The wireless control box 509 receives the detection information of the detection probe 506 through the wireless transceiver 508, judges and controls the subsequent ditch opening and fertilization operations according to the preset values. The adjustable plowshare device 30 is installed on the front side of the seeder mounting bracket 10. The drive motor 305 rotates to drive the transmission shaft 306 to rotate; The driving gear 304 on the transmission shaft 306 meshes with the driven rack 307 to move the driven rack 307 up and down, thereby adjusting the height of the ditch opening plowshare 301 to adapt to different soil conditions. The ditch opening plowshare 301 performs a ditch opening operation on the soil during the traveling process; Seeds are stored in the seed storage box 201 and are conveyed by the feeding pipe 202 and the adapter pipe 206 into the grasping cavity 207 of the sowing tray 203 under the action of gravity; the rotating motor drives the turntable 208 to rotate, and the finger gripper 210 clamps single seeds and rotates with the turntable; When the finger gripper 210 carries the seeds past the blanking hole 211, the seeds fall into the furrowed soil along the blanking channel 212 and the blanking conduit 204; the blanking sensor 205 in the blanking conduit 204 can sense the passing of the seeds to monitor the sowing situation; The feeding pump 402 conveys the liquid fertilizer in the fertilizer and water tank 401 to the transfer storage tank 409 through the feeding pipe and the adapter; the flow meter 404 at the bottom of the transfer storage tank 409 monitors the fertilization amount, and the discharge valve 405 controls the discharge flow rate; The fertilizing pump 407 is an intermittent pump, and its working time is synchronized with the detection signal of the blanking sensor 205. When seeds fall, the fertilizing pump starts, conveys the liquid fertilizer through the conveying pipe 406 to the fertilizing nozzle 408, and sprays it onto the soil below the blanking conduit 204 to achieve precise fertilization; The soil covering plowshare 101 is installed in the middle of the bottom of the seeder mounting frame 10, behind the furrowing plowshare 301, and reversely deflects the soil ridge formed by the furrowing plowshare to cover the sown seeds; the pressing wheel 102 is installed at the rear end of the seeder mounting frame 10 to flatten the soil surface covering the seeds, making the seeds in close contact with the soil, which is beneficial to the germination and growth of the seeds.

[0020] The wireless control box 509 processes the received soil information and compares and judges it with the preset values; for example, when it detects that the soil humidity is low, the system will judge that it is necessary to increase the fertilization amount to ensure the nutrient absorption of the seeds; when it detects that the soil texture is dry and hard, it is necessary to adjust the depth of the furrow; A wireless signal transmitter is arranged in the detection disk 505 and is connected to the wireless control box 509. The connection methods include but are not limited to Bluetooth and mobile communication networks; if it is judged that the furrow depth needs to be adjusted, the wireless control box 509 sends a control signal to the drive motor 305 of the adjustable plowshare device 30; the drive motor 305 adjusts the rotation speed or rotation direction according to the received signal, thereby driving the transmission shaft 306 to rotate. The driving gear 304 on the transmission shaft 306 meshes with the driven rack 307 to drive the driven rack 307 to move up and down, realizing the adjustment of the height of the furrowing plowshare 301 to adapt to different soil conditions; If it is determined that the fertilization amount needs to be changed, the wireless control box 509 sends a control signal to the fertilization device 40. On the one hand, the working state of the feeding pump 402 is controlled, such as adjusting its rotation speed to control the flow rate of the liquid fertilizer from the water-fertilizer tank 401 to the transfer tank 409. On the other hand, by controlling the working time and frequency of the fertilization pump 407 (since the fertilization pump 407 is an intermittent pump and the working time is synchronized with the detection signal of the blanking sensor 205) and the opening degree of the discharge valve 405, the fertilization amount of the fertilization nozzle 408 is accurately controlled to make the fertilization operation match the soil conditions and sowing situation, so as to achieve precise fertilization.

[0021] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved. 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sunflower seeder, comprising a seeder mounting frame (10), a seeding device (20), an adjustable plowshare device (30), a fertilizing device (40) and a soil detection device (50), characterized in that: The seeding device (20) includes a seed storage box (201), a blanking pipe (202) and a seeding disc (203). A blanking pipe (202) is provided at the bottom of the seed storage box (201), a connecting pipe (206) is provided at the bottom of the blanking pipe (202), the seeding disc (203) is fixed to the lower left side of the blanking pipe (202), the connecting pipe (206) is an inclined L-shaped pipe body, and the connecting pipe (206) communicates with the seeding disc (203) to the left. The adjustable plowshare device (30) includes a ditching plowshare (301), a fixing frame (302), a driving motor (305) and a transmission shaft (306); the fixing frame (302) is welded to the seeder mounting frame (10), multiple ditching plowshares (301) are provided and are horizontally installed on the fixing frame (302); a driven rack (307) is welded to the top of the ditching plowshare (301), and the driving motor (305) drives the driven rack (307) to move up and down through the transmission shaft (306), so as to adjust the height of the ditching plowshare (301). The fertilizing device (40) includes a water and fertilizer tank (401) and a fertilizing mechanism. The fertilizing mechanism includes a transfer storage box (409), a discharge valve (405), a delivery pipe (406), a fertilizer pump (407) and a fertilizer spray head (408). The transfer storage box (409) is installed at the rear side of the blanking pipe (202), an input port (403) is opened on the right side of the transfer storage box (409), and liquid fertilizer is injected into the transfer storage box (409) through the input port (403); the water and fertilizer tank (401) transports liquid fertilizer to the transfer storage box (409) through a feeding pump (402) and a feeding pipe; the spray port of the fertilizer spray head (408) is inclined towards the lower side of the blanking conduit (204).

2. The sunflower seeder according to claim 1, characterized in that: The main body of the seeder mounting frame (10) is a square vehicle frame, wheels are provided at both the front end and the rear end thereof, a tractor (60) is provided between the seeder mounting frame (10) and the soil detection device (50), and the seeder mounting frame (10) is installed at the rear side of the tractor (60).

3. The sunflower seeder according to claim 2, characterized in that: A covering plowshare (101) is horizontally installed in the middle at the bottom of the seeder mounting frame (10). The covering plowshare (101) is located at the rear side of the ditching plowshare (301) and is used for covering seeds; a pressing wheel (102) is horizontally installed at the rear end of the seeder mounting frame (10).

4. The sunflower seeder according to claim 1, characterized in that: The inner cavity of the sowing tray (203) is divided into a grasping cavity (207) and a blanking cavity. The grasping cavity (207) is arranged on the left side, and the grasping cavity (207) communicates with the transfer pipe (206). The grasping cavity (207) receives the seeds conveyed by the transfer pipe (206). A turntable (208) is arranged in the grasping cavity (207). Finger grippers (210) are arranged around the turntable (208) with the turntable (208) as the center. Clamping pieces are arranged at the ends of the finger grippers (210). The clamping pieces are inclined outward, so that an included angle with one end wide and one end narrow is formed between the clamping pieces and the inner wall of the sowing tray (203). When the turntable (208) rotates, the finger grippers (210) clamp single seeds, and then the finger grippers (210) rotate synchronously with the turntable (208).

5. The sunflower seeder according to claim 4, characterized in that: A blanking hole (211) communicating with the blanking cavity is arranged on one side of the top of the grasping cavity (207). An inclined downward blanking channel (212) is arranged in the blanking cavity. A blanking conduit (204) is installed at the rear side of the bottom of the sowing tray (203), and the top of the blanking conduit (204) communicates with the blanking channel (212). The blanking conduit (204) is inclined backward, and a blanking sensor (205) is installed in the upper part of the inner cavity of the blanking conduit (204). When the seeds pass through the blanking sensor (205), they will be sensed. A rotating motor is installed in the middle of the left side of the sowing tray (203). A driving shaft (209) is installed on the turntable (208), and the left end of the driving shaft (209) is connected to the transmission end of the rotating motor.

6. The sunflower seeder according to claim 1, characterized in that: An extension pipe is installed at the bottom of the transfer and storage box (409). A flow meter (404) is installed at the rear side of the extension pipe to monitor the fertilization amount of each fertilization nozzle (408). An outlet valve (405) is installed at the bottom of the extension pipe. The outlet valve (405) is an electric control valve to control the runoff of the extension pipe. A fertilization pump (407) is installed at the top of the fertilization nozzle (408). A delivery pipe (406) is installed between the fertilization nozzle (408) and the extension pipe. The fertilization pump (407) is an intermittent pump.

7. The sunflower seeder according to claim 1, characterized in that: The soil detection device (50) includes a mounting frame (501), a hydraulic adjusting rod (502), a fixed shaft (503), a guide wheel (504), a detection disc (505), a battery sleeve (507) and a wireless control box (509). The mounting frame (501) is two L-shaped support rods that are symmetric left and right. Hydraulic adjusting rods (502) are symmetrically installed at the top of the mounting frame (501). The hydraulic adjusting rods (502) and the other ends of the mounting frame (501) are respectively fixed on the vehicle body of the tractor (60). The hydraulic adjusting rods (502) adjust the pitching angle of the mounting frame (501) by telescoping. A fixed shaft (503) is sleeved at the rear end of the top of the mounting frame (501) to assist the mounting frame (501) in rotating. Brush boxes (510) are symmetrically installed on the left and right sides at the bottom of the fixed shaft (503). The brush boxes (510) are U-shaped with the opening downward, and bristles and paddles are distributed in the brush boxes (510).

8. The sunflower seeder according to claim 7, characterized in that: A support shaft is rotatably installed at the bottom of the mounting bracket (501), and guide wheels (504) are symmetrically installed at the left and right ends of the support shaft; a battery sleeve (507) is sleeved in the middle of the support shaft, and the battery sleeve (507) is fixed to the support shaft by bolts, and a lithium battery is filled in the battery sleeve (507); detection discs (505) are symmetrically sleeved on the left and right sides of the support shaft, the diameter of the detection disc (505) is slightly smaller than the diameter of the guide wheel (504), and the detection disc (505) is also fixed to the support shaft by bolts and moves synchronously with the support shaft.

9. The sunflower seeder according to claim 8, characterized in that: Detection probes (506) are arranged around the center of the detection disc (505), the detection probes (506) extend outwards, and a plurality of detection rings (511) are axially arranged on the outer side of the detection probes (506); a buffer cavity is arranged between the top of the detection disc and the bottom of the detection probe (506), a buffer spring (512) is arranged in the buffer cavity, a rubber connecting part (513) is arranged at the top of the buffer spring (512), and the top of the rubber connecting part (513) is fixed to the detection probe (506); the detection probe (506) corresponds to the brush box (510), when the detection probe (506) moves upwards, it passes through the inside of the brush box (510), and the bristles and elastic pieces in the brush box (510) can brush the soil on the detection probe (506); a wireless control box (509) is installed between the two mounting brackets (501).

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