Self-propelled corn double-row direct seeding, ditching and ridging seeder and seeding method

Abstract

The invention provides a self-propelled corn double-row direct seeding, ditching and ridging seeder and a seeding method, which are used for solving the problems of high power loss and high cost of agricultural machinery in the prior art. Comprising a moving mechanism, a posture regulating and controlling mechanism and a ridging and sowing mechanism, and the ridging and sowing mechanism comprises a fixed frame body fixedly connected to the rear portion of a regulating and controlling assembly, a transmission box fixedly arranged on the fixed frame body in a penetrating mode, a ridging assembly in transmission connection with the transmission box, two sowing assemblies and a soil covering assembly; a transmission relation is established between an input shaft of the transmission box and an output shaft of the power assembly through the driving mechanism, the driving mechanism comprises a power leading-in assembly and a power transition assembly, and the power leading-in assembly has a power transmission state and a power cut-off state. The power introduction assembly is switched between a power transmission state and a power cut-off state to transmit or cut off power output by the power assembly to the transmission box through the power transition assembly so as to start or stop rotation of the two soil digging cutter sets. The machine can effectively save energy consumption and reduce cost.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to a self-propelled double-row direct seeding and furrowing corn planter and its seeding method. Background Technology

[0002] Sowing is a crucial step in agricultural production, and its quality and timeliness directly affect crop emergence, growth, and final yield. Mechanized sowing significantly improves operational efficiency, ensures consistent sowing depth, and enables reasonable planting density, promoting uniform crop emergence and robust growth, thus laying the foundation for high and stable yields. Therefore, mechanized sowing technology has been widely applied in my country.

[0003] Corn, as a major food crop, is mainly planted in two patterns: ridge planting and flat planting, with ridge planting being more common. Traditional ridge planting typically involves two separate steps: first, specialized ridge-forming machinery is used to create ridges on the field; then, planting machinery is used to open furrows, sow seeds, cover with soil, and compact the soil on the ridges. However, in actual planting, because the machinery needs to enter the field multiple times, the process is not only numerous and cumbersome, reducing planting efficiency, but also repeatedly compacts the soil, easily leading to soil compaction and affecting crop growth and development. This also increases the power consumption of agricultural machinery and operating costs. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a self-propelled corn double-row direct seeding and furrowing planter and a seeding method to solve the problems of high power loss and high cost of agricultural machinery in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a self-propelled double-row direct seeding and furrowing planter for corn, comprising: The mobile mechanism includes a chassis frame, two wheel systems, and a power assembly. The two wheel systems are located on the left and right sides below the chassis frame, and the power assembly transmits power to the two wheel systems through a transmission and speed change structure. An attitude control mechanism, comprising a vertical base and a control component that are vertically and fixedly installed at the rear of the chassis frame; The ridge-forming and sowing mechanism includes a fixed frame body fixedly connected to the rear of the control component, a transmission box fixedly mounted on the fixed frame body, a ridge-forming component connected to the transmission box, two sowing components, and a soil-covering component. The two sowing components are located between the chassis frame and the fixed frame body. The ridge-forming component includes a drive shaft and two sets of soil-lifting blades. The drive shaft is coaxially and fixedly connected to the output shaft of the transmission box. The two sets of soil-lifting blades are symmetrically installed at both ends of the drive shaft. The soil covering assembly is used to adjust the thickness of the soil covered by the soil dug up and thrown by the two sets of soil-lifting blades onto the seeds sown on the ground by the two seeding assemblies. The input shaft of the transmission box establishes a transmission relationship with the output shaft of the power component through a drive mechanism. The drive mechanism includes a power introduction component and a power transition component. The power introduction component has a power transmission state and a power cut-off state. The power introduction component switches between the power transmission state and the power cut-off state to transmit or cut off the power output by the power component to the transmission box through the power transition component, so as to start or stop the rotation of the two sets of soil-lifting blades.

[0006] Optionally, the power introduction assembly includes a driving pulley and a driven pulley coaxially fixed to the output shaft of the power assembly, a belt that drives the driving pulley and the driven pulley, a tensioning part, and a linear drive part. The driven pulley is driven to the power transition assembly. The linear drive part drives the tensioning part to switch between a power transmission state and a power cut-off state, so that the tensioning part presses or loosens the belt to transmit or cut off the power of the power assembly to the transmission box via the power transition assembly. The tensioning part includes a support rod and a roller that is vertically and rotatably mounted on one end of the support rod. The support rod is mounted on the chassis frame via a mounting base and is rotatably connected to the mounting base. The roller has a groove on its axial sidewall that matches the belt.

[0007] Optionally, the linear drive unit includes a first flexible connector, one end of which passes through a wire hole on the mounting base and is fixedly connected to the support rod. A linear drive unit, the linear drive unit being mounted on the vertical base; The first elastic element, in conjunction with the linear extension and retraction motion of the linear drive element, drives the roller to press or release the belt, so as to be in a power transmission state or a power cut-off state.

[0008] Optionally, the control assembly includes a first arm, a second arm, a third arm disposed opposite to the vertical seat, and a control drive. The two ends of the first arm are respectively hinged to one end of the vertical seat and one end of the third arm, and the two ends of the second arm are respectively hinged to the other end of the vertical seat and the third arm. The first arm, the second arm, the third arm, and the vertical seat form a parallelogram structure. The third arm is fixedly connected to the fixed frame. The fixed end and the telescopic end of the control drive are respectively hinged to the vertical seat and the first arm.

[0009] Optionally, the power transition assembly includes a first transition shaft, a second transition shaft, a transition section, and a chain drive section. The first transition shaft is rotatably connected to the vertical seat via a convex arm, and the second transition shaft is rotatably mounted on the control assembly. The first transition shaft and the second transition shaft establish a transmission relationship through the transition section, and the second transition shaft is connected to the input shaft of the transmission box via the chain drive section. The transition section is a sprocket drive structure; Alternatively, the transition section includes a first flywheel, a second flywheel, a chain, and a speed regulator. The first flywheel is coaxially and fixedly fitted with the first transition shaft, and the second flywheel is coaxially and fixedly fitted with the second transition shaft. The first flywheel and the second flywheel are connected by the chain drive, and the speed regulator is used to switch the chain between different sprockets on the first flywheel and the second flywheel.

[0010] Optionally, the soil-lifting blade assembly includes several blades arranged spirally along the drive shaft axis; The blade body includes an arc-shaped segment, which is detachably mounted on a connector via at least one fastening part, and the connector is fixedly connected to the side wall of the drive shaft. A bent section, one end of which is fixedly connected to the arc-shaped section, and the bending direction of the bent section is towards the side of the seeding component; An inclined section is fixedly connected to the other end of the bent section.

[0011] Optionally, the soil covering component includes a main board, which is fixedly connected to the fixing frame and located above the ridging component; The main board has at least two bent cover plates on both sides; The adapter connects the main board to the adjacent bent cover plate, and the adjacent bent cover plates are connected through the adapter. The first driving unit is used to synchronously drive and adjust the angle between the bent cover plates on both sides of the motherboard and the motherboard. At least one second driving unit is provided, which is used to synchronously drive and adjust the angle between adjacent bent cover plates on both sides of the motherboard.

[0012] Optionally, the first driving unit and the second driving unit have the same structure; The number of the second drive units is less than one of the number of the bent cover plates on one side of the motherboard; The first drive unit includes two second flexible connectors, one end of each of the two second flexible connectors being connected to the two bent cover plates via connecting lugs; A linear power component is mounted on the vertical base. The linear power component synchronously pulls the two second flexible connectors through linear telescopic movement to synchronously control the angle between the two bending cover plates and the main board. The second elastic element is used to reset the bent cover plate to the side facing the ground.

[0013] Optionally, the vertical base has extension arms on its left and right sides facing left and right, and the two seeding components are detachably mounted on the extension arms by mounting parts, so that the distance between the two seeding components can be adjusted. The distance between the two walking wheel systems is greater than or equal to the distance between the two sowing components, and the distance between the two sowing components is greater than the distance between the two sets of soil-lifting blades.

[0014] A sowing method for a self-propelled double-row direct seeding and furrowing seeder for corn, using the aforementioned self-propelled double-row direct seeding and furrowing seeder, includes the following steps: Movement steps: When the power input component is in the power cut-off state, the power output from the output shaft of the power component is used for the two walking wheel systems to move; Sowing steps: The corn seeds are directly sown onto the ground in two rows using the two sowing components suspended in the air; Ridging step: The power introduction component is in the power transmission state. The power output shaft of the power component drives the two walking wheel systems to move and transmits the power to the transmission box through the power introduction component and the power transition component to drive the two sets of soil-lifting blades to rotate. The two sets of soil-lifting blades dig up the soil between the two rows of corn seeds and throw it to both sides to form furrows. The thrown soil is used to cover the seeds sown on the ground by the sowing component and to pile up the ridges. Two rows of corn seeds are sown on the ridges between adjacent furrows. Covering step: The soil thickness over the seeds sown on the ground by the two sets of soil-lifting blades is adjusted by the soil covering component.

[0015] As described above, the self-propelled corn double-row direct seeding and furrowing planter and seeding method of the present invention have at least the following beneficial effects: Power is transmitted to the left and right walking wheel systems via the power component and transmission speed change structure, driving the machine forward or backward. The vertical seat and control component adjust the height of the ridge planting mechanism to adapt to different soil conditions or operational requirements. The two planting components suspend corn seeds and directly sow them onto the land to form two rows. This solves the problem of the seed metering device, which is prone to clogging when connected to the furrow opener via a pipe, in traditional methods. The drive mechanism transmits the power from the power component to the transmission box via the power introduction component and the power transition component. The transmission box drives the drive shaft of the ridge-forming component to rotate, causing two sets of soil-lifting blades to dig and throw soil symmetrically, forming furrows. At the same time, the soil thrown out by the soil-lifting blades is guided and adjusted by the soil-covering component to cover the seeds, controlling the soil thickness to ensure consistent sowing depth. This system involves directly sowing two rows of seeds in mid-air, then using two soil-lifting blades to dig up the soil between the two rows and throw it out to form furrows. Simultaneously, the thrown soil is used by a soil-covering component to adjust the thickness of the soil covering the seeds and to raise the ridges. The compact and highly integrated structure allows for the completion of sowing, furrowing, and adjusting the sowing thickness and depth in a single operation, eliminating the need for multiple stages and reducing equipment travel. This improves field efficiency and solves the problems of high energy consumption and cost caused by multiple operations. In the power transmission state, power is transmitted through a power transition component to drive the transmission box, starting the rotation of the soil-lifting blades. In the power cut-off state, the soil-lifting blades stop working. Independent control of the soil-lifting blades allows a single power source to simultaneously drive the chassis frame and the drive shaft of the ridge-forming component. Using a single power component to drive both movement and soil-lifting blade operation simplifies the overall structure, reduces manufacturing costs and complexity, and allows for power cut-off of the ridge-forming component when moving between plots or turning, preventing the soil-lifting blades from idling and wearing down, further reducing energy consumption. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention. Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective. Figure 3 The diagram shown is a three-dimensional structural schematic of the three-dimensional blade assembly of the present invention. Figure 4 The diagram shown is a three-dimensional structural schematic of the soil covering component of the present invention. Figure 5 The diagram shown is a schematic diagram of the seeding component structure of the present invention; Figure 6 The image shown is a cross-sectional view of the seeding component of the present invention. Figure 7 The diagram shown is a schematic representation of the internal structure of the seeding component of the present invention. Figure 8 The diagram shown is a schematic diagram of the extrusion disc structure of the seeding component of the present invention.

[0017] Component designation explanation 1. Mobile mechanism; 11. Chassis frame; 12. Walking wheel system; 13. Power assembly; 2. Ridging and sowing mechanism; 21. Fixed frame; 22. Ridging component; 22. Drive shaft; 221. Soil-lifting blade assembly; 222. Blade body; 2221. Arc section; 22211. Bending section; 22212. Inclined section; 22213. Fastening part; 22214. Insertion seat; 22215. Bottom blade; 223. Sowing component; 23. Mounting part; 231. U-shaped buckle; 2311. Fastening connection unit; 2312. Shell; 2321. Squeezing area; 23211. Seed filling area; 23212. Feed inlet; 232121. Anti-disturbance plate; 232122. Seed storage chamber; 2321221. Seed transport chamber; 2321222. Seed carrying area; 23213. Seed discharging area; 23214. Discharge port; 232141. Seed discharging turntable; 232 2. Annular cavity 23221, seed suction hole 23222, extrusion disc 2323, pressure production boss 23231, smooth arc surface 232311, adjusting screw hole 23232, guide hole 23233, pressure regulating part 2324, adjusting sleeve 23241, bearing 23242, fixed disc 23243, guide shaft 23244, elastic ball 2325, connecting pipe 23251, elastic bladder 23252, soil covering assembly 24, main board 241, bent cover plate 242, adapter 243, first drive part 244, second flexible connector 2441, connecting lug 2442, linear power component 2443, second elastic component 2444, second drive part 245, transmission box 25; Attitude control mechanism 3, vertical seat 31, extension arm 311, control component 32, first support arm 321, second support arm 322, third support arm 323, control drive component 324; Drive mechanism 4, power introduction assembly 41, driving pulley 411, driven pulley 412, belt 413, tensioning part 414, support rod 4141, roller 4142, roller groove 41421, mounting base 4143, linear drive part 415, first flexible connector 4151, linear drive part 4152, first elastic part 4153, power transition assembly 42, first transition shaft 421, second transition shaft 422, transition part 423, chain drive part 424, and protruding arm 425. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0019] Please see Figures 1 to 8It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0020] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0021] In this embodiment, please refer to Figures 1 to 8 This invention provides a self-propelled double-row direct seeding and furrowing planter for corn, comprising: The mobile mechanism 1 includes a chassis frame 11, two wheel systems 12, and a power assembly 13. The two wheel systems 12 are located on the left and right sides below the chassis frame 11. The wheel systems 12 can be tracked or wheeled. The power assembly 13 transmits power to the two wheel systems 12 through a transmission and speed change structure. The transmission and speed change structure adopts existing mature technology and will not be described in detail here. The power assembly 13 includes an engine, which can be a diesel engine or a gasoline engine.

[0022] The attitude control mechanism 3 includes a vertical base 31 and a control component 32 that are vertically and fixedly installed behind the chassis frame 11. The ridge-forming sowing mechanism 2 includes a fixed frame 21 fixedly connected to the rear of the control component 32, a transmission box 25 fixedly mounted on the fixed frame 21, a ridge-forming component 22 connected to the transmission box 25, two sowing components 23, and a soil-covering component 24. The two sowing components 23 are located between the chassis frame 11 and the fixed frame 21. The ridge-forming component 22 includes a drive shaft 221 and two sets of soil-lifting blades 222. The drive shaft 221 is coaxially fixedly connected to the output shaft of the transmission box 25, and the two sets of soil-lifting blades 222 are symmetrically installed at both ends of the drive shaft 221. The sowing component 23 can be an electrically driven seed metering device. The power supply is set on the fixed frame 21, and an encoder or radar speed measurement is set to realize real-time speed adjustment of electric seed metering to avoid missed sowing or double sowing. Existing technology can be used, which will not be described in detail here.

[0023] The seeding assembly may also include a housing 2321, a seed metering turntable 2322, a compression disc 2323, a pressure regulating part 2324, and an elastic balloon 2325. The seed metering turntable 2322 has an annular cavity 232221 inside. The seed metering turntable 2322 is rotatably mounted in the housing 2321 via a drive shaft. The housing 2321 may be made of a transparent material to facilitate observation of seed adsorption. Between the inner wall of the housing 2321 and the outer wall of the seed metering turntable 2322, a compression zone 23211, a seed filling zone 23212, a seed carrying zone 23213, and a seed metering zone 23214 are formed sequentially. The elastic balloon 2325 is in the states of being compressed and de-exhausted, expanded and inhaled, maintaining negative pressure, and compressed and blown in the compression zone 23211, seed filling zone 23212, seed carrying zone 23213, and seed metering zone 23214, respectively.

[0024] Two extrusion discs 2323 are configured, and the two extrusion discs 2323 are rotatably mounted in the annular cavity 232221 through the pressure regulating part 2324 and are arranged opposite to each other. On the opposite sides of the two extrusion discs 2323, pressure-generating protrusions 23231 are symmetrically formed, and the thickness of the pressure-generating protrusions 23231 increases smoothly and continuously from the seed dispensing area 23214 to the seed filling area 23212. The thickness of the pressure-generating protrusions 23231 forms a fan-shaped structure along the circumference of the extrusion discs 2323.

[0025] Multiple elastic balloons 2325 are configured and installed in the annular cavity 232221 and located between the two extrusion discs 2323. The seed metering turntable 2322 has multiple seed suction holes 232222 arranged at equal intervals on the circumferential side wall. The number of elastic balloons 2325 is equal to the number of seed suction holes 232222 and the two are connected in a one-to-one correspondence. The pressure regulating unit 2324 drives the two extrusion discs 2323 to move in opposite directions or in the opposite direction at the same time, so as to adjust the suction force of the two pressure-generating protrusions 23231 on the elastic balloon 2325 when they suck up seeds.

[0026] The drive shaft, driven by a motor, rotates the seed metering turntable 2322. Seed suction holes 232222 enter the seed filling zone 23212. The elastic balloon 2325 corresponding to the seed suction hole 232222 is located between the thicker parts of the pressure-generating bosses 23231 on the two compression discs 2323. The elastic balloon 2325 is compressed. As the seed metering turntable 2322 continues to rotate, the squeezing force on the elastic balloon 2325 by the two pressure-generating bosses 23231 gradually weakens. The elastic balloon 2325 recovers through its own elasticity, increasing its volume and generating negative pressure, which is then released through the seed suction hole 232222. The negative pressure suction adsorbs the seeds onto the seed suction hole 232222, allowing the pressure-generating boss 23231 to compress the seeds and the elastic recovery of the elastic bulb 2325 to generate negative pressure independently. This significantly reduces energy consumption and equipment complexity, thereby lowering costs. The seed suction hole 232222, after adsorbing the seeds, enters the seed carrying area 23213, where the seeds are stably carried. When the seed discharging turntable 2322 rotates to the seed discharging area 23214, the pressure exerted by the pressure-generating boss 23231 on the elastic bulb 2325 gradually increases. At this time, the volume of the elastic bulb 2325 decreases, generating positive pressure and blowing the seeds off. The pressure regulating unit 2324 drives the compression disc 2323 to move in opposite directions, adjusting the overall compression degree of the elastic bulb 2325 to achieve suction adjustment.

[0027] The elastic balloon 2325 includes a connecting tube 23251 and an elastic balloon body 23252. The elastic balloon body 23252 can be made of rubber or thermoplastic elastomer to meet the hardness and elasticity requirements. One end of the connecting tube 23251 is connected to the seed suction hole 232222, and the diameter of the connecting tube 23251 is larger than the diameter of the seed suction hole 232222. This allows air to be drawn in more quickly through the connecting tube 23251 when the elastic balloon body 23252 recovers its deformation, thereby accelerating the establishment of negative pressure and facilitating timely and reliable seed adsorption. The other end of the connecting tube 23251 is connected to the interior of the elastic balloon body 23252. The side of the housing 2321, corresponding to the position of the compression area 23211, has a venting groove for the elastic bladder 23252 to release air when it is compressed by the pressure-generating boss 23231.

[0028] The pressure regulating part 2324 includes an adjusting sleeve 23241. One end of the adjusting sleeve 23241 is located inside the annular cavity 232221 and is sleeved on the seeding turntable 2322 via a bearing 23242. The other end of the adjusting sleeve 23241 extends to the outside of the housing 2321. Two threads of the same length but different directions of rotation are provided on the side wall of one end of the adjusting sleeve 23241. Adjusting screw holes 23232 with different directions of rotation are respectively formed at the axial positions of the two extrusion discs 2323. These threads are threaded to the threads of different directions of rotation on the adjusting sleeve 23241. A fixing plate 23243 is fixedly installed inside the housing 2321 on one side; Guide shaft 23244 is perpendicular to and fixedly connected to the other side wall of fixed disk 23243. The central axis of guide shaft 23244 is parallel to the central axis of adjusting sleeve 23241. Guide shaft 23244 passes through guide holes 23233 on two extrusion disks 2323.

[0029] By rotating the adjusting sleeve 23241 extending outside the housing 2321, the threads on one end of the adjusting sleeve 23241, with different directions of rotation, engage with the adjusting screw holes 23232 at the shaft centers of the two extrusion discs 2323. This converts the rotational motion of the adjusting sleeve 23241 into the linear motion of the extrusion discs 2323. When the sleeve rotates in one direction, the two extrusion discs 2323 move synchronously towards each other, compressing the elastic bladder 23252 in the middle, increasing its deformation, and thus increasing the generated negative pressure. When the sleeve is rotated in the opposite direction, the two extrusion discs 2323 move synchronously away from each other, releasing the pressure on the bladder and reducing the negative pressure. Furthermore, once adjusted to the correct position, the self-locking characteristic of the threads effectively maintains the current position, ensuring stable pressure.

[0030] The pressure-generating protrusion 23231 is located at one end of the high side of the seed filling area 23212 and has a smooth arc surface 232311 to ensure that the negative pressure generation is stable and controllable and improve the reliability of seed absorption.

[0031] The housing 2321 has an inlet 232121 corresponding to the seed filling area 23212, wherein the inlet 232121 is connected to the storage hopper. The inlet 2321211 is provided with an anti-scratching plate 232122. The anti-scratching plate can be an L-shaped structure. The anti-scratching plate 232122 divides the inlet 232121 into a seed storage cavity 2321221 and a seed transport cavity 2321222. The seed transport cavity 2321222 is the gap between the anti-scratching plate and the side wall of the seed dispensing turntable 2322, so as to prevent seeds that are not sucked by the elastic capsule 23252 from entering the seed carrying area 23213. The housing 2321 has a discharge port 232141 corresponding to the seed dispensing area 23214; The squeezing zone 23211 corresponds to a sector angle of 75° with the seed metering turntable 2322; the seed filling zone 23212 corresponds to a sector angle of 75° with the seed metering turntable 2322; the seed carrying zone 23213 corresponds to a sector angle of 150° with the seed metering turntable 2322; and the seed metering zone 23214 corresponds to a sector angle of 60° with the prime number seed metering turntable 2322. The soil covering component 24 is used to adjust the thickness of the soil covered by the soil dug and thrown up by the two sets of soil-lifting blades 222 onto the seeds sown on the ground by the two sowing components 23. The input shaft of the transmission box 25 establishes a transmission relationship with the output shaft of the power assembly 13 through the drive mechanism 4. The drive mechanism 4 includes a power introduction component 41 and a power transition component 42. The power introduction component 41 has a power transmission state and a power cut-off state. The power introduction component 41 switches between the power transmission state and the power cut-off state to transmit or cut off the power output by the power assembly 13 to the transmission box 25 through the power transition component 42, so as to start or stop the rotation of the two sets of soil-lifting blade groups 222.

[0032] Power is transmitted from the power component 13 to the left and right walking wheel system 12 via the transmission speed change structure, driving the machine forward or backward. The vertical seat 31 and the adjustment component 32 adjust the height of the ridge sowing mechanism 2 to adapt to different soil conditions or operational requirements. The two sowing components 23 suspend the corn seeds and directly sow them onto the land to form two rows, which solves the problem of the seed metering device being easily blocked by the pipe connected to the furrow opener. The drive mechanism 4 transmits the power of the power component 13 to the transmission box 25 via the power introduction component 41 and the power transition component 42. The transmission box 25 drives the drive shaft 221 of the ridge sowing component 22 to rotate, causing the two sets of soil-lifting blades 222 to dig and throw soil symmetrically, forming furrows. At the same time, the soil thrown out by the soil-lifting blades 222 is guided and adjusted by the soil covering component 24 to cover the seeds, controlling the soil thickness and ensuring consistent sowing depth. This method involves directly sowing two rows of seeds in a suspended manner, then using two soil-lifting blade sets 222 to dig the soil between the two rows of seeds and throw the soil out to form furrows. At the same time, the thrown soil is used by the soil covering component 24 to adjust the thickness of the soil covering the seeds and to build up the ridges. The structure is compact and highly integrated, which allows sowing, furrow digging, and adjustment of sowing thickness and depth to be completed in one go. This eliminates the need for multiple operations in stages, reduces the number of times the equipment has to go back and forth, improves field operation efficiency, and solves the problems of high energy consumption and high cost caused by multiple operations. When the power input component 41 is in the power transmission state, the power drives the transmission box 25 through the power transition component 42, starting the rotation of the soil-lifting blade assembly 222. When the power is cut off, the operation of the soil-lifting blade assembly 222 is stopped. Independent control of the start and stop of the soil-lifting blade assembly 222 allows the chassis frame 11 and the drive shaft 221 of the ridging component 22 to be driven by a single power source. Using a single power component 13 to drive the walking and the operation of the soil-lifting blade assembly 222 simplifies the overall structure, reduces manufacturing costs and complexity, and can cut off the power to the ridging component 22 when moving plots or turning, avoiding the soil-lifting blade assembly 222 from idling and wear, and also reducing energy consumption.

[0033] In this embodiment, please refer to Figure 1The power introduction component 41 includes a driving pulley 411 and a driven pulley 412 coaxially fixed to the output shaft of the power component 13, a belt 413 that drives the driving pulley 411 and the driven pulley 412, a tensioning part 414, and a linear drive part 415. The driven pulley 412 is driven to the power transition component 42. The linear drive part 415 drives the tensioning part 414 to switch between a power transmission state and a power cut-off state, so that the tensioning part 414 presses or loosens the belt 413 to transmit or cut off the power of the power component 13 to the transmission box 25 via the power transition component 42. The tensioning part 414 includes a support rod 4141 and a roller 4142 vertically and rotatably mounted on one end of the support rod 4141. The support rod 4141 is mounted on the chassis frame 11 via a mounting base 4143. The support rod 4141 is rotatably connected to the mounting base 4143. The roller 4142 has a roller groove 41421 on its axial sidewall that matches the belt 413. The roller 4142 can rotate around the axial direction. When the belt 413 is tightened, the roller 4142 rotates synchronously with the belt 413 to avoid sliding friction between the roller 4142 and the belt 413 and reduce wear on the belt 413. The roller 4142 can be fitted to the lower side of the belt 413.

[0034] When in power transmission mode, the linear drive unit 415 actuates, driving the support rod 4141 of the tensioning unit 414 to rotate around the mounting base 4143. The roller 4142 at one end of the support rod 4141 presses against the belt 413, causing the belt 413 to be tensioned in the span between the driving pulley 411 and the driven pulley 412. The friction between the belt 413 and the pulleys increases significantly, allowing power to be reliably transmitted from the driving pulley 411 to the driven pulley 412 via the belt 413, and then driven by the power transition assembly 42. The drive transmission box 25 and the soil-lifting blade assembly 222 are in operation. When in the power cutting-off state, the linear drive unit 415 reverses its movement, pulling the tensioning unit 414 back. The roller 4142 releases the pressure on the belt 413, causing the belt 413 to become slack. The contact pressure and friction between the belt 413 and the driving and driven pulleys 412 are greatly reduced. At this time, even if the driving pulley 411 is still rotating, power cannot be effectively transmitted through the belt 413, and the driven pulley 412 stops rotating, thus cutting off the power transmission to the ridging mechanism. The connection and cutting off of power are achieved by using the belt 413, pulleys, and tensioning roller 4142, which has a simple structure and low manufacturing and maintenance costs.

[0035] In this embodiment, please refer to Figure 1The linear drive unit 415 includes a first flexible connector 4151, one end of which passes through a wire hole on the mounting base 4143 and is fixedly connected to the support rod 4141; the first flexible connector 4151 can be a traction cable made of polymer material, or it can be a plastic-coated steel wire rope made of weather-resistant and wear-resistant material. A linear drive component 4152 is mounted on the vertical base 31. The linear drive component 4152 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, and the telescopic end of the linear drive component 4152 is fixedly connected to the other end of the first flexible connector 4151. The first elastic element 4153, in cooperation with the linear drive element 4152, drives the roller 4142 to press or release the belt 413, thus maintaining a power transmission state or a power cut-off state. The first elastic element 4153 includes a spring. When the roller 4142 and belt 413 are pressed together, the spring can be in a stretched or compressed state. When stretched, both ends of the spring are fixedly connected to the bottom side of the support rod 4141 and the bottom of the mounting base 4143, respectively. When compressed, both ends of the spring are fixedly connected to the top side of the support rod 4141 and the top of the mounting base 4143, respectively. The linear drive element 4152 provides an active and controllable driving force to overcome the spring force and load resistance, achieving state switching; while the spring provides a stable restoring force, buffering, and force compensation. Together, they ensure the reliability and smoothness of the operation.

[0036] In the power transmission state, the telescopic end of the linear drive 4152 retracts, and the first flexible connector 4151 pulls the support rod 4141, causing it to rotate around the mounting base 4143. The support rod 4141 drives the roller 4142 to press against the belt 413. At this time, the first elastic element 4153 is further stretched or compressed, storing elastic potential energy. The pressing force of the roller 4142 is the resultant force of the thrust of the linear drive 4152 and the spring force. This resultant force makes the belt 413 taut, and the power can be transmitted.

[0037] When the power is cut off, the telescopic end of the linear drive 4152 extends, relaxing the tension on the flexible connector. At this time, the elastic potential energy stored in the first elastic element 4153 is released, and its restoring force pushes or pulls the support rod 4141 to rotate in the opposite direction, causing the roller 4142 to quickly leave the belt 413. The belt 413 loosens, the power is cut off, and the spring plays a role in quickly resetting and ensuring complete separation during this process.

[0038] In this embodiment, please refer to Figure 1 and Figure 2The control component 32 includes a first support arm 321, a second support arm 322, a third support arm 323 opposite to the vertical seat 31, and a control drive 324. The two ends of the first support arm 321 are respectively hinged to one end of the vertical seat 31 and one end of the third support arm 323. The two ends of the second support arm 322 are respectively hinged to the other end of the vertical seat 31 and the third support arm 323. The first support arm 321, the second support arm 322, the third support arm 323 and the vertical seat 31 form a parallelogram structure. The third support arm 323 is fixedly connected to the fixed frame 21. The fixed end and the telescopic end of the control drive 324 are respectively hinged to the vertical seat 31 and the first support arm 321. The control drive 324 includes a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

[0039] By adjusting the extension and retraction of the drive component 324, the first arm 321 is pushed or pulled, causing it to rotate around the hinge point with the vertical seat 31. Due to the constraint of the parallelogram mechanism, the rotation of the first arm 321 will force the second arm 322 and the third arm 323 to generate corresponding linkage. During the entire movement, the third arm 323 always remains parallel to the vertical seat 31. When the drive component is activated, the third arm 323 and the fixed frame 21 on it will drive the fixed frame 21 to move, thereby realizing the control of the position of the fixed frame 21. The parallelogram structure itself has high mechanical rigidity, can symmetrically support and transmit loads, and can still remain stable when bearing large loads.

[0040] In this embodiment, please refer to Figure 1 and Figure 2 The power transition assembly 42 includes a first transition shaft 421, a second transition shaft 422, a transition section 423, and a chain drive section 424. The first transition shaft 421 is rotatably connected to the vertical seat 31 via a convex arm 425. The second transition shaft 422 is rotatably mounted on the control assembly 32. The second transition shaft 422 can be rotatably mounted on the third support arm 323. The first transition shaft 421 and the second transition shaft 422 establish a transmission relationship through the transition section 423. The second transition shaft 422 is connected to the input shaft of the transmission box 25 via the chain drive section 424. The chain drive section 424 is arranged obliquely to save installation space. The transition section 423 is a sprocket drive structure. At this time, the chain drive structure has no tensioning structure. The transmission box 25 has gear sets with different gear ratios. By changing the meshing state of the gears, different transmission ratios are achieved, thereby achieving the purpose of speed change. Speed ​​change is a well-known existing technology, so it will not be described in detail here. The first transition shaft 421 and the second transition shaft 422 are on the same plane. When the parallelogram structure changes, the relative distance between the first transition shaft 421 and the second transition shaft 422 remains unchanged.

[0041] Alternatively, the transition section 423 includes a first flywheel, a second flywheel, a chain, and a speed regulator. The first flywheel is coaxially and fixedly fitted with the first transition shaft 421, and the second flywheel is coaxially and fixedly fitted with the second transition shaft 422. The first and second flywheels are connected by the chain drive. The speed regulator is used to switch the chain between different sprockets on the first and second flywheels. The speed regulator includes a first speed regulator and a second speed regulator, which are located on the upper and lower sides of the chain, respectively. Both the first and second speed regulators are Enviolo Automatica gearboxes, which are mature existing technologies and will not be described here. The transmission housing 25 is equipped with a first transmission shaft and a second transmission shaft. The first transmission shaft serves as the input shaft of the transmission housing 25. It is connected to the second transition shaft 422 via the chain drive 424. The first and second transmission shafts are also connected via a chain drive module. The second transmission shaft serves as the output shaft of the transmission housing 25, transmitting power to the drive shaft 221, thus extending the transmission distance downwards. The design of the first and second flywheels allows for speed changes on the drive shaft during transmission.

[0042] The power first drives the first transition shaft 421 to rotate, and then transmits the power to the second transition shaft 422 through the transition part 423. Since the connection between the two allows for a certain positional change, it adapts to the change in wheelbase caused by the movement of the control component 32. The power obtained by the second transition shaft 422 is transmitted to the input shaft of the transmission box 25 through the obliquely arranged chain drive part 424. After speed change, the power is finally transmitted to the drive shaft 221.

[0043] In this embodiment, please refer to Figures 1 to 3 The soil-lifting blade assembly 222 includes several blades 2221 arranged spirally along the axial direction of the drive shaft 221; The spiral arrangement allows the cutter body 2221 to cut into the soil sequentially at different phase angles when the drive shaft 221 rotates, resulting in continuous and stable operation, uniform power load, and the pushing force generated along the axial direction pushes the soil from the middle to both sides, ensuring uniform soil coverage above the seeds, regular ridge formation, and facilitating the breaking up of soil clods, making the soil after ridging finer and more conducive to seed germination.

[0044] The ridging component 22 also includes a bottom blade 223, which is mounted on the fixed frame 21 and located between the two sets of soil-lifting blades 222, which helps to optimize the quality of the furrows.

[0045] The blade body 2221 includes an arc-shaped segment 22211, which is detachably mounted on a connector 22215 via at least one fastening part 22214. The connector 22215 is fixedly connected to the side wall of the drive shaft 221. The fastening part 22214 includes a connector and a fastener. The connector 22215 has a slot for inserting the arc-shaped segment 22211 in a direction perpendicular to the central axis of the drive shaft 221. The connector 22215 and the arc-shaped segment 22211... At least one through hole is formed on segment 22211 for the connector to pass through, and the central axis of the through hole is parallel to the central axis of drive shaft 221. The fastener is used to engage with one end of the connector after the connector passes through the through hole on the plug-in seat 22215 and the arc segment 22211. The connector can be a bolt, in which case the fastener is a nut; the connector can also be a U-bolt, in which case the locking part has two nuts and can be detachably connected, which improves the convenience of maintenance and replacement. The bent section 22212 has one end fixedly connected to the arc-shaped section 22211, and the bending direction of the bent section 22212 is towards the side of the seeding component 23. Inclined segment 22213 is fixedly connected to the other end of bent segment 22212. Arc segment 22211, bent segment 22212 and inclined segment 22213 can be integrally formed, which can improve rigidity.

[0046] The cutter body 2221 is detachably mounted on the drive shaft 221 via the fastening part 22214 on the arc-shaped section 22211, which simplifies the replacement and maintenance process of the cutter body 2221. When the cutter body 2221 is worn or damaged, it is not necessary to disassemble the entire cutter shaft, and the individual cutter body 2221 can be directly replaced, reducing maintenance costs and time.

[0047] The ridge-forming component 22 also includes soil guides, the number of which is equal to that of the cutter body 2221. The soil guides are located on the opposite side of the digging side of the cutter body 2221. The soil guides can be guide plates with a shape similar to that of the cutter body 2221.

[0048] The angle between the soil guide and the blade 2221 is an obtuse angle, and the soil guide and the corresponding blade 2221 are integrally formed. When the chassis frame 11 moves forward, the high-speed rotating blade 2221 cuts into the soil from below, chopping and throwing it up. The rotating soil guide can then carry more soil up and guide it to both sides, improving the quality of soil raising and ridging.

[0049] In this embodiment, please refer to Figures 1 to 4 The soil covering component 24 includes a main board 241, which is fixedly connected to the fixed frame 21 and located above the ridging component 22. The main board 241 has at least two bending cover plates 242 on both sides; the bending cover plate on one side of the main board can initially be set in an arc shape. The adapter 243 connects the main board 241 and the adjacent bending cover plate 242. The adapter 243 includes a protruding block, a concave block, and a shaft core. The protruding block is installed on the edge of the main board 241 or the bending cover plate 242, and the concave block is installed on the bending cover plate 242 or the main board 241. Both the protruding block and the concave block have shaft holes for the shaft core to pass through and be movably connected.

[0050] The first driving unit 244 is used to synchronously drive and adjust the angle between the bent cover plate 242 on both sides of the motherboard 241 and the motherboard 241. At least one second driving unit 245 is provided for synchronously driving and adjusting the angle between adjacent bent cover plates 242 on both sides of the motherboard 241.

[0051] The first drive unit 244 and the second drive unit 245 drive the bending cover plates 242 on both sides of the main board 241 and the bending cover plates 242 together, causing the bending cover plates 242 to retract inward or open. This adjusts the soil thickness covering the seeds sown on the ground by the sowing component 23 and the shape of the ridge surface, creating a suitable compacted or loose seedbed environment for seed germination. The soil thrown up and falling can also make close contact with the corn seeds due to its own gravity, ensuring normal seed growth. The soil covering component 24, while adjusting the soil thickness, also ensures that the corn seeds are at the same sowing depth.

[0052] In this embodiment, please refer to Figures 1 to 4 The first driving unit 244 and the second driving unit 245 have the same structure; The number of the second drive unit 245 is less than one of the number of the bent cover plate 242 on one side of the motherboard 241; when there are two bent cover plates 242 on one side of the motherboard 241, the number of the second drive unit 245 is one.

[0053] The first drive unit 244 includes two second flexible connectors 2441. One end of each of the two second flexible connectors 2441 is connected to the two bent cover plates 242 via connecting lugs 2442. The second flexible connectors 2441 can be traction cables made of polymer materials or plastic-coated steel wire ropes made of weather-resistant and wear-resistant materials.

[0054] A linear power component 2443 is mounted on the vertical base 31. The linear power component 2443 synchronously pulls the two second flexible connectors 2441 through linear telescopic movement to synchronously control the angle between the two bending cover plates 242 and the main plate 241. The linear power component 2443 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

[0055] The second elastic element 2444 is used to reset the bent cover plate 242 towards the ground. The second elastic element 2444 can be a torsion spring, which is mounted on the main board 241 or the bent cover plate 242 via a mounting lug to reset the bent cover plate 242 towards the ground. The mounting lug has a through hole for the second flexible connector 2441 to pass through, making the wiring more reasonable and reducing space occupation.

[0056] The linear power component 2443 drives the two second flexible connectors 2441 to simultaneously pull the bending cover plates 242 on both sides, enabling the angles on both sides to be controlled synchronously by a single power source. The structure is simple, the cost is low, and it can effectively ensure the consistency of the actions on both sides. In cooperation with the second elastic component 2444, it can automatically reset the bending cover plates 242 and also play a role in energy absorption and buffering, thus extending the service life.

[0057] In this embodiment, please refer to Figure 1 and Figure 2 The vertical base 31 has extension arms 311 on its left and right sides facing left and right. The two seeding components 23 are respectively detachably mounted on the extension arms 311 via mounting parts 231, so that the distance between the two seeding components 23 can be adjusted. The extension arms 311 are provided with threading blocks for the second flexible connector 2441 to pass through.

[0058] The mounting component 231 includes a U-shaped buckle 2311, the open side of which is fastened to the extension arm 311; A fastening connection unit 2312 connects the seeding assembly 23 and the U-shaped buckle 2311 to the extension arm 311. The fastening connection unit 2312 includes a connecting element and a fastening element. The connecting element is configured to pass through openings in the U-shaped buckle 2311 and the housing of the seeding assembly 23, and engages with the fastening element to achieve clamping and fixation. When the connecting element and the fastening element engage, a preset clamping force is generated between the U-shaped buckle 2311 and the seeding assembly 23, thereby achieving fixation. The connecting element and the fastening element can be bolts and nuts.

[0059] The distance between the two walking wheel systems 12 is greater than or equal to the distance between the two sowing components 23, and the distance between the two sowing components 23 is greater than the distance between the two sets of soil-lifting blade groups 222.

[0060] In this embodiment, please refer to Figures 1 to 8 A sowing method for a self-propelled double-row direct seeding and furrowing seeder for corn, using the aforementioned self-propelled double-row direct seeding and furrowing seeder, includes the following steps: Movement steps: When the power input component 41 is in the power cut-off state, the power output from the output shaft of the power component 13 is used for the two walking wheel systems 12 to move. Sowing steps: The corn seeds are directly sown onto the ground in two rows using the two sowing components 23 suspended in the air; Ridging step: The power introduction component 41 is in the power transmission state. The power output from the output shaft of the power component 13 drives the two walking wheel systems 12 to move and transmits the power to the transmission box 25 through the power introduction component 41 and the power transition component 42 to drive the two sets of soil-lifting blades 222 to rotate. The two sets of soil-lifting blades 222 dig up the soil between the two rows of corn seeds and throw it to both sides to form furrows. The thrown soil is used to cover the seeds sown on the ground by the sowing component 23 and to pile up the ridges. Two rows of corn seeds are sown on the ridges between adjacent furrows. Covering soil step: The soil thickness covered on the seeds sown on the ground by the two sets of soil-lifting blades 222 is adjusted by the soil covering component 24.

[0061] In summary, this invention transmits power from the power component 13 to the left and right walking wheel system 12 via a transmission and speed change structure, driving the machine forward or backward. The vertical seat 31 and the adjustment component 32 adjust the height of the ridge sowing mechanism 2 to adapt to different soil conditions or operational requirements. The two sowing components 23 suspend and directly sow corn seeds onto the land to form two rows, thus solving the problem of easy blockage of the seed metering pipe caused by the traditional seed metering device being connected to the furrow opener. The drive mechanism 4 transmits the power from the power component 13 to the transmission box 25 via the power introduction component 41 and the power transition component 42. The transmission box 25 drives the drive shaft 221 of the ridge forming component 22 to rotate, causing the two sets of soil-lifting blades 222 to symmetrically dig and throw out soil, forming furrows. At the same time, the soil thrown out by the soil-lifting blades 222 is guided and adjusted by the soil covering component 24 to cover the seeds, controlling the soil thickness and ensuring consistent sowing depth. This method involves directly sowing two rows of seeds in a suspended manner, then using two soil-lifting blade sets 222 to dig the soil between the two rows of seeds and throw the soil out to form furrows. At the same time, the thrown soil is used by the soil covering component 24 to adjust the thickness of the soil covering the seeds and to build up the ridges. The structure is compact and highly integrated, which allows sowing, furrow digging, and adjustment of sowing thickness and depth to be completed in one go. This eliminates the need for multiple operations in stages, reduces the number of times the equipment has to go back and forth, improves field operation efficiency, and solves the problems of high energy consumption and high cost caused by multiple operations. When the power input component 41 is in the power transmission state, power drives the transmission box 25 via the power transition component 42, starting the rotation of the ridge-forming blade assembly 222. When the power is cut off, the operation of the ridge-forming blade assembly 222 is stopped. Independent control of the start and stop of the ridge-forming blade assembly 222 allows a single power source to simultaneously drive the chassis frame 11 and the drive shaft 221 of the ridging assembly 22. Using a single power component 13 to drive both travel and the operation of the ridge-forming blade assembly 222 simplifies the overall structure, reduces manufacturing costs and complexity, and allows the power to the ridging assembly 22 to be cut off when moving plots or turning, preventing the ridge-forming blade assembly 222 from idling and wearing down, thus reducing energy consumption. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A self-propelled double-row direct seeding and furrowing machine for corn, characterized in that, include: The mobile mechanism includes a chassis frame, two wheel systems, and a power assembly. The two wheel systems are located on the left and right sides below the chassis frame, and the power assembly transmits power to the two wheel systems through a transmission and speed change structure. An attitude control mechanism, comprising a vertical base and a control component that are vertically and fixedly installed at the rear of the chassis frame; The ridge-forming and sowing mechanism includes a fixed frame body fixedly connected to the rear of the control component, a transmission box fixedly mounted on the fixed frame body, a ridge-forming component connected to the transmission box, two sowing components, and a soil-covering component. The two sowing components are located between the chassis frame and the fixed frame body. The ridge-forming component includes a drive shaft and two sets of soil-lifting blades. The drive shaft is coaxially and fixedly connected to the output shaft of the transmission box. The two sets of soil-lifting blades are symmetrically installed at both ends of the drive shaft. The soil covering assembly is used to adjust the thickness of the soil covered by the soil dug up and thrown by the two sets of soil-lifting blades onto the seeds sown on the ground by the two seeding assemblies. The input shaft of the transmission box establishes a transmission relationship with the output shaft of the power component through a drive mechanism. The drive mechanism includes a power introduction component and a power transition component. The power introduction component has a power transmission state and a power cut-off state. The power introduction component switches between the power transmission state and the power cut-off state to transmit or cut off the power output by the power component to the transmission box through the power transition component, so as to start or stop the rotation of the two sets of soil-lifting blades.

2. The self-propelled double-row direct seeding and furrowing planter for corn according to claim 1, characterized in that: The power input assembly includes a driving pulley and a driven pulley coaxially fixed to the output shaft of the power assembly, a belt that drives the driving pulley and the driven pulley, a tensioning part, and a linear drive part. The driven pulley is driven to the power transition assembly. The linear drive part drives the tensioning part to switch between a power transmission state and a power cut-off state, so that the tensioning part presses or loosens the belt to transmit or cut off the power of the power assembly to the transmission box through the power transition assembly. The tensioning part includes a support rod and a roller that is vertically and rotatably mounted on one end of the support rod. The support rod is mounted on the chassis frame via a mounting base and is rotatably connected to the mounting base. The roller has a groove on its axial sidewall that matches the belt.

3. The self-propelled corn double-row direct seeding and furrowing planter according to claim 2, characterized in that: The linear drive unit includes a first flexible connector, one end of which passes through a wire hole on the mounting base and is fixedly connected to the support rod. A linear drive unit, the linear drive unit being mounted on the vertical base; The first elastic element, in conjunction with the linear extension and retraction motion of the linear drive element, drives the roller to press or release the belt, so as to be in a power transmission state or a power cut-off state.

4. The self-propelled double-row direct seeding and furrowing seeder for corn according to claim 1, characterized in that: The control assembly includes a first arm, a second arm, a third arm opposite to the vertical seat, and a control drive. The two ends of the first arm are respectively hinged to one end of the vertical seat and one end of the third arm, and the two ends of the second arm are respectively hinged to the other end of the vertical seat and the third arm. The first arm, the second arm, the third arm, and the vertical seat form a parallelogram structure. The third arm is fixedly connected to the fixed frame. The fixed end and the telescopic end of the control drive are respectively hinged to the vertical seat and the first arm.

5. The self-propelled double-row direct seeding and furrowing planter for corn according to claim 1, characterized in that: The power transition assembly includes a first transition shaft, a second transition shaft, a transition section, and a chain drive section. The first transition shaft is rotatably connected to the vertical seat via a convex arm. The second transition shaft is rotatably mounted on the control assembly. The first transition shaft and the second transition shaft establish a transmission relationship through the transition section. The second transition shaft is connected to the input shaft of the transmission box via the chain drive section. The transition section is a sprocket drive structure; Alternatively, the transition section includes a first flywheel, a second flywheel, a chain, and a speed regulator. The first flywheel is coaxially and fixedly fitted with the first transition shaft, and the second flywheel is coaxially and fixedly fitted with the second transition shaft. The first flywheel and the second flywheel are connected by the chain drive, and the speed regulator is used to switch the chain between different sprockets on the first flywheel and the second flywheel.

6. The self-propelled double-row direct seeding and furrowing seeder for corn according to claim 1, characterized in that: The soil-lifting cutter assembly includes several cutter bodies arranged spirally along the drive shaft axis. The blade body includes an arc-shaped segment, which is detachably mounted on a connector via at least one fastening part, and the connector is fixedly connected to the side wall of the drive shaft. A bent section, one end of which is fixedly connected to the arc-shaped section, and the bending direction of the bent section is towards the side of the seeding component; An inclined section is fixedly connected to the other end of the bent section.

7. The self-propelled double-row direct seeding and furrowing planter for corn according to claim 1, characterized in that: The soil covering component includes a main board, which is fixedly connected to the fixed frame and located above the ridging component; The main board has at least two bent cover plates on both sides; The adapter connects the main board to the adjacent bent cover plate, and the adjacent bent cover plates are connected through the adapter. The first driving unit is used to synchronously drive and adjust the angle between the bent cover plates on both sides of the motherboard and the motherboard. At least one second driving unit is provided, which is used to synchronously drive and adjust the angle between adjacent bent cover plates on both sides of the motherboard.

8. The self-propelled double-row direct seeding and furrowing planter for corn according to claim 1, characterized in that: The first driving unit and the second driving unit have the same structure; The number of the second drive units is less than one of the number of the bent cover plates on one side of the motherboard; The first drive unit includes two second flexible connectors, one end of each of the two second flexible connectors being connected to the two bent cover plates via connecting lugs; A linear power component is mounted on the vertical base. The linear power component synchronously pulls the two second flexible connectors through linear telescopic movement to synchronously control the angle between the two bending cover plates and the main board. The second elastic element is used to reset the bent cover plate to the side facing the ground.

9. The self-propelled double-row direct seeding and furrowing planter for corn according to claim 1, characterized in that: The vertical base has extension arms on its left and right sides facing left and right. The two seeding components are detachably mounted on the extension arms by mounting parts, so that the distance between the two seeding components can be adjusted. The distance between the two walking wheel systems is greater than or equal to the distance between the two sowing components, and the distance between the two sowing components is greater than the distance between the two sets of soil-lifting blades.

10. A sowing method for a self-propelled double-row direct seeding and furrowing seeder for corn, characterized in that: Using the self-propelled corn double-row direct seeding and furrowing planter as described in claim 9 includes the following steps: Movement steps: When the power input component is in the power cut-off state, the power output from the output shaft of the power component is used for the two walking wheel systems to move; Sowing steps: The corn seeds are directly sown onto the ground in two rows using the two sowing components suspended in the air; Ridging step: The power introduction component is in the power transmission state. The power output shaft of the power component drives the two walking wheel systems to move and transmits the power to the transmission box through the power introduction component and the power transition component to drive the two sets of soil-lifting blades to rotate. The two sets of soil-lifting blades dig up the soil between the two rows of corn seeds and throw it to both sides to form furrows. The thrown soil is used to cover the seeds sown on the ground by the sowing component and to pile up the ridges. Two rows of corn seeds are sown on the ridges between adjacent furrows. Covering step: The soil thickness over the seeds sown on the ground by the two sets of soil-lifting blades is adjusted by the soil covering component.

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