A precision hill-drop planter

Abstract

The present application relates to agricultural machinery, in particular to a precision hill-drop planter. The precision hill-drop planter comprises a frame, a seed arranging mechanism, a reversing mechanism, a power mechanism and a flat-hole structure arranged in sequence from front to back on the frame, the power mechanism being connected with the reversing mechanism through a transmission mechanism; the seed arranging mechanism comprises a seed arranging group and a duck-bill seed dropping part, the seed arranging group being connected with the reversing mechanism through a one-way ratchet mechanism, and the duck-bill seed dropping part being connected with the reversing mechanism through a connecting rod interplanting mechanism. The precision hill-drop planter can realize automatic and precise seed arranging and dropping, improve the efficiency of crop planting, and prolong the service life of the planter.

Description

Technical Field

[0001] This invention relates to agricultural machinery, and in particular to a precision seeding machine. Background Technology

[0002] Currently, American ginseng is typically sown manually or semi-manually. Both manual and semi-manual sowing processes require human assistance, resulting in low sowing efficiency, high manpower and material resources, and high sowing costs.

[0003] Currently, some fully automatic American ginseng seeding machines have emerged, mostly employing an inner disc star-shaped wheel duckbill structure. Due to its structural characteristics, the wheels inevitably generate significant soil disturbance during the rolling sowing process. American ginseng is a densely planted plant with very small spacing between seeds. When using the aforementioned seeding machines for dense planting, interference between holes can easily occur, leading to unstable sowing depth, plant spacing, and row spacing, thus affecting plant growth and development. Therefore, when using these seeding machines for American ginseng seed sowing, to reduce inter-seed interference, the plant spacing must be widened, which reduces the yield per acre. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects in the existing technology and to propose a precision seeder that can realize automatic and precise seeding and sowing of crop seeds, improve crop sowing efficiency, and extend the service life of the seeder.

[0005] The technical solution of the present invention is: a precision hole seeder, including a frame, wherein a seed metering mechanism, a reversing mechanism, a power mechanism and a hole leveling structure are arranged sequentially from front to back on the frame, and the power mechanism is connected to the reversing mechanism through a transmission mechanism;

[0006] The seed metering mechanism includes a seed metering unit and a duckbill seed dropping section. The seed metering unit is connected to the reversing mechanism via a one-way ratchet mechanism, and the duckbill seed dropping section is connected to the reversing mechanism via a linkage insertion mechanism.

[0007] In this invention, the commutation mechanism includes two commutators, and the two commutators are symmetrically arranged with respect to the movement direction of the machine.

[0008] The input shaft of the commutator is connected to the output end of the power mechanism through a transmission mechanism. The first output end of the commutator is connected to the seed metering unit through a one-way ratchet mechanism. The second output end of the commutator is connected to the duckbill seed dropping part through a linkage insertion mechanism.

[0009] The transmission mechanism includes:

[0010] The linkage assembly includes a ninth link, a tenth link, and an eleventh link. One end of the ninth link is connected to the power mechanism for transmission. The other end of the ninth link is hinged to one end of the tenth link. The other end of the tenth link is hinged to one end of the eleventh link. The other end of the eleventh link is connected to a rotating shaft.

[0011] The rotating shaft is rotatably connected to the frame and is located in the middle position between the two commutators;

[0012] The first swing arm is fixedly connected to the front end of the rotating shaft at its middle position. One end of the first swing arm is connected to the commutator on one side through the first connecting rod, and the other end of the first swing arm is connected to the commutator on the other side through the second connecting rod.

[0013] The seed metering unit includes several seed meterers, which are spaced apart along a direction perpendicular to the direction of movement of the seed meterers, and the bottom of the seed meterers is connected to a spring hose.

[0014] Several seed meterers are connected by a seed metering shaft. A seed metering wheel is fixed on the outside of the seed metering shaft inside the seed metering box. Several seed dropping holes are provided at intervals on the outer surface of the seed dropping holes. Seed guiding rows are provided on the two symmetrical outer sides of the seed dropping holes. The seed guiding rows are inclined towards the seed dropping holes. The seed guiding rows include several spaced disturbance protrusions.

[0015] The two inner walls of the double-stage slot are symmetrically arranged, including an inclined surface and a vertical surface. The side of the slot facing the opening is inclined, and the side of the slot facing the bottom of the slot is vertical.

[0016] The seed-dropping section of the duckbill includes several duckbills, and there is a one-to-one correspondence between the duckbills and the seed metering device above them. The seeds in the seed metering device fall into the duckbill through a spring hose, and the duckbill is equipped with a tongue.

[0017] A linkage pressure plate is provided at the front of the upper part of the duckbill, and a fixed pressure plate is provided at the rear of the upper part of the duckbill. The linkage pressure plate and the fixed pressure plate are slidably connected. The distance between the linkage pressure plate and the fixed pressure plate can be adjusted through the linkage pressure plate mechanism. The fixed pressure plate is connected to the linkage insertion mechanism.

[0018] The top of the tongue is fixed to the tongue connecting plate, which is located above the fixed pressure plate. The tongue connecting plate and the fixed pressure plate are slidably connected, and the tongue connecting plate is connected to the linkage insertion mechanism.

[0019] One-way ratchet mechanisms include:

[0020] One-way ratchet, with one-way ratchet fixed at both ends of the seeding shaft, one side of the ratchet teeth of the one-way ratchet teeth is an inclined tooth surface, and a backstop pin is fixed at the circumferential outer surface of the ratchet teeth;

[0021] One-way paddle contacts the inclined tooth surface of the one-way ratchet, the anti-reverse stop contacts the one-way paddle, the one-way paddle is wound around the fourth link, and a return spring connects the one-way paddle and the fourth link.

[0022] The clamping plate and the one-way lever are located between the two clamping plates. One end of the clamping plate is hinged to the seeding shaft, and the other end of the clamping plate is rotatably connected to the fourth connecting rod.

[0023] The fourth link is vertically fixed to one end of the third link, and the other end of the third link is connected to the reversing mechanism via the second rocker arm.

[0024] The linkage insertion mechanism includes:

[0025] Two symmetrically arranged insertion brackets are provided. The front end of the insertion bracket is fixedly connected to the rear surface of the fixed pressure plate, and the rear end of the insertion bracket is slidably connected to the frame. The insertion bracket is sequentially connected to the output end of the reversing mechanism through the sixth link and the fifth link. The middle part of the sixth link is connected to the frame through the limiting slider.

[0026] The differential linkage is rotatably connected to the frame, and the distance between the hinge point of the differential linkage and the frame and the front end of the differential linkage is greater than the distance between the hinge point and the rear end of the differential linkage, so that the movement speed of the front end of the differential linkage is greater than the movement speed of its rear end. The rear end of the differential linkage is connected to the lower middle part of the sixth linkage through the seventh linkage.

[0027] The eighth link is hinged at its upper end to the front end of the differential link and at its lower end to the tongue connecting plate.

[0028] The linkage pressure plate mechanism includes:

[0029] The two sixth links are fixedly connected by a rope rod.

[0030] The insert rod, the linkage pressure plate and the fixed pressure plate are slidably connected by the insert rod. Several insert rods are fixed on the rear surface of the linkage pressure plate. The corresponding fixed pressure plate is provided with through holes, and the insert rods are slidably set in the through holes.

[0031] The pull rope is connected to the insertion pole at its front end and to the pull rope rod at its rear end.

[0032] The flat-hole mechanism includes:

[0033] Two symmetrically arranged floating rods are hinged to the frame at their front ends, and the rear ends of the two floating rods are fixedly connected by a connecting shaft.

[0034] The roller has several rollers that can be rotatably mounted on the connecting shaft. The rollers are equipped with soil-turning needles arranged in a spiral direction, and the soil-turning needles on adjacent rollers are symmetrically arranged.

[0035] The beneficial effects of this invention are:

[0036] (1) This application adopts a set of power mechanism to realize linkage seeding, which solves the problems of poor coordination of seeding action, easy time difference of action, and difficulty in reseeding and missing seeds when the linkage seeding mechanism and seeding mechanism adopt two sets of power mechanisms;

[0037] (2) The planter realizes the planting and dropping of American ginseng seeds. The entire device realizes automatic planting and dropping during the movement process, which improves the planting efficiency of American ginseng seeds and reduces the planting cost.

[0038] (3) Because American ginseng seeds are flat, they are prone to pressing against each other during the filling process, forming dead spots and causing serious seed jamming and leakage. The double-stage grooves and seed-guiding rows formed by the protrusions designed for the seed-discharging shaft in this application gather the seeds into the double-stage grooves, which can effectively break the dead spots between seeds and prevent seed jamming caused by stacking. This ensures that American ginseng seeds can be smoothly placed into the double-stage groove-shaped seed-dropping holes, thus improving the filling efficiency.

[0039] (4) By using a one-way ratchet mechanism, the intermittent rotation of the seed-discharging shaft is controlled by the one-way ratchet, which enables the American ginseng seeds to fall accurately into the seed-discharging hole and can cooperate with the seed-discharging action of the duckbill, further improving the sowing efficiency.

[0040] (5) During the seed-dropping process, the downward movement of the duckbill is achieved through the linkage insertion mechanism; at the same time, the rapid downward movement of the tongue is achieved through the differential linkage. The movement speed of the tongue is greater than the downward speed of the duckbill, so when the duckbill moves to the lowest point, the tongue opens the bottom of the duckbill, forming an opening at the bottom of the duckbill, thereby allowing the seeds inside the duckbill to fall into the soil, completing the seed-dropping process; during the return process, the upward movement speed of the tongue is greater than the upward movement speed of the duckbill, ensuring the smooth seed-dropping.

[0041] (6) As the tongue moves downward to open the bottom of the duck beak, the tongue continuously breaks through the duck beak and pushes out the seeds inside. The tongue and the duck beak rub against each other continuously, and the two are constantly worn down. In order to reduce the impact of the tongue on the duck beak and the damage to the duck beak during the impact, this application is equipped with a linkage pressure plate mechanism. As the tongue opens the duck beak downward, the linkage pressure plate and the fixed pressure plate squeeze the top of the duck beak, assist the bottom of the duck beak to open, reduce the impact force of the tongue on the duck beak, reduce the damage to the duck beak, and extend the service life of the duck beak.

[0042] (7) The linkage sowing mechanism in this application achieves trajectory convergence, so that the duckbill connected to the mechanism can perform an action similar to vertical sowing. The overlap of the soil entry and exit trajectories is high, which minimizes the disturbance to the soil during duckbill sowing, ensures sowing quality, and is beneficial to plant growth and development.

[0043] In summary, this device, through the coordination of a one-way ratchet mechanism, a linkage seeding mechanism, and a linked pressure plate mechanism, achieves precise seeding and placement while minimizing soil disturbance during seeding and interference with already sown holes, thus ensuring seeding quality. This seeder can be used not only for sowing American ginseng seeds but also for sowing other crop seeds. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0045] Figure 2 This is a top view of the structure of the present invention;

[0046] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0047] Figure 4 This is a schematic diagram of the transmission mechanism;

[0048] Figure 5 This is a schematic diagram of the structure of the iris;

[0049] Figure 6 This is a schematic diagram of a one-way ratchet mechanism;

[0050] Figure 7 This is a schematic diagram of a one-way ratchet.

[0051] Figure 8 This is a schematic diagram of the structure of a duckbill;

[0052] Figure 9 This is a schematic diagram of the tongue's structure;

[0053] Figure 10 This is a schematic diagram of the sliding connection structure between the tongue connecting plate and the fixed pressure plate;

[0054] Figure 11 This is a schematic diagram of the first structure of the linkage insertion mechanism;

[0055] Figure 12 This is a schematic diagram of the second structure of the linkage insertion mechanism.

[0056] In the diagram: 1. Frame; 2. Driven wheel; 3. Passive wheel; 4. Seeding mechanism; 5. Reversing mechanism; 6. Power mechanism; 7. Leveling mechanism; 8. One-way ratchet mechanism; 9. Linkage seeding mechanism; 10. Diesel engine; 11. Reducer; 12. Reversing gear; 13. Shaft; 14. First swing arm; 15. First link; 16. Second link; 17. Ninth link; 18. Tenth link; 19. Eleventh link; 20. Seeding shaft; 21. Seeding box; 22. Spring hose; 23. Hole wheel; 24. Seeding hole; 26. Disturbance protrusion; 27. Second swing arm; 28. Third link; 29. ​​Fourth link. 30. Paddle shifter; 31. One-way ratchet; 32. Return spring; 33. Clamping plate; 34. Inclined tooth surface; 35. Backstop; 36. Duckbill; 37. Fixed pressure plate; 38. Linkage pressure plate; 39. Tongue; 40. Tongue connecting plate; 41. Insertion bracket; 42. First slider; 43. Fifth link; 44. Sixth link; 45. Limit slider; 46. Differential link; 47. Support seat; 48. Eighth link; 49. Seventh link; 50. Insertion rod; 51. Sliding sleeve; 52. Pull rope rod; 53. Pull rope; 54. Insertion rod; 55. Pulley; 56. Floating link; 57. Connecting shaft; 58. Roller; 59. Soil turning needle. Detailed Implementation

[0057] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0058] Specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0059] like Figures 1 to 3 As shown, the precision seeder of the present invention includes a frame 1, with wheels at both the front and rear ends. The rear wheel is a driving wheel 2, which is connected to a power mechanism. The front wheel is a driven wheel 3. During the movement of the driving wheel 2, the driven wheel 3 is driven by a chain drive, thereby realizing the forward movement of the entire seeder.

[0060] The machine frame is equipped with a seed metering mechanism 4, a reversing mechanism 5, a power mechanism 6, and a leveling mechanism 7, arranged sequentially from front to back. The power mechanism 6 is connected to the reversing mechanism 5 via a transmission mechanism, and the reversing mechanism 5 is connected to the seed metering mechanism 4. The power generated by the power mechanism 6 is transmitted to the seed metering mechanism 4 sequentially through the transmission mechanism and the reversing mechanism 5, thereby completing the seed metering action. The leveling mechanism 7 is connected to the rear of the machine frame.

[0061] The seed metering mechanism includes a seed metering unit and a duckbill seed dropping section. The seed metering unit is connected to the reversing mechanism 5 via a one-way ratchet mechanism 8. The power output from the reversing mechanism 5 is transmitted to the seed metering unit through the one-way ratchet mechanism 8, completing the seed metering action of the seed metering unit. The duckbill seed dropping section is connected to the reversing mechanism 5 via a linkage insertion mechanism 9. The power output from the reversing mechanism 5 is transmitted to the duckbill seed dropping section through the linkage insertion mechanism 9, completing the seed dropping action.

[0062] In this embodiment, the power mechanism 6 is located at the rear of the frame. The power mechanism includes a diesel engine 10 and a reducer 11. The reducer 11 is located at the output shaft of the diesel engine 10, and the output shaft of the reducer 11 is connected to the reversing mechanism via a transmission mechanism. The power output by the diesel engine 10 is transmitted to the reversing mechanism through the reducer 11 and the transmission mechanism.

[0063] Meanwhile, the other output end of the reducer is connected to a power output shaft, which transmits power to the drive wheel 2 via chain drive.

[0064] The reversing mechanism is mounted on the frame in front of the power mechanism. In this embodiment, the reversing mechanism includes two commutators 12, which are symmetrically arranged relative to the direction of movement of the seeder. The change in power direction is achieved through the commutators.

[0065] like Figure 4 As shown, the transmission mechanism of this application includes a linkage group, a rotating shaft 13, a first rocker arm 14, a first connecting rod 15, and a second connecting rod 16. The rotating shaft 13 is rotatably connected to the frame and is located at the middle position between the two commutators. The rear end of the rotating shaft 13 is driven to the output shaft of the reducer 11 through the linkage group, and the front end of the rotating shaft 13 is fixedly connected to the middle position of the first rocker arm 14. One end of the first rocker arm 14 is driven to the output shaft of one commutator through the first connecting rod 15, and the other end of the first rocker arm 14 is driven to the output shaft of the other commutator through the second connecting rod 16.

[0066] The linkage assembly includes a ninth link 17, a tenth link 18, and an eleventh link 19. One end of the ninth link 17 is connected to the output shaft of the reducer 11. The other end of the ninth link 17 is hinged to one end of the tenth link 18. The other end of the tenth link 18 is hinged to one end of the eleventh link 19. The other end of the eleventh link 19 is connected to the rotating shaft 13.

[0067] The power output from the reducer 11 is transmitted to the ninth link 17, which rotates. The tenth link 18 then transmits the power to the eleventh link 19, causing the eleventh link 19 to oscillate. The rotational motion of the ninth link 17 is converted into the oscillation of the eleventh link 19 by the length difference between the ninth link 17 and the eleventh link 19.

[0068] The power output from the reducer 11 is transmitted to the rotating shaft 13 through the linkage assembly, causing the rotating shaft 13 to rotate. At the same time, the rotating shaft 13 drives the first rocker arm 14 to rotate in the vertical direction. As the first rocker arm 14 swings, it transmits power to the commutators on both sides through the first connecting rod 15 and the second connecting rod 16 respectively.

[0069] Each commutator has two output ends. The first output shaft of the commutator is connected to the seed metering assembly via a one-way ratchet mechanism 8, transmitting part of the commutator's power to the seed metering assembly, enabling the seed metering assembly to complete the seed metering action. The second output shaft of the commutator is connected to the duckbill seed dropping section via a linkage insertion mechanism 9, transmitting part of the commutator's power to the duckbill seed dropping section, enabling the duckbill to complete the seed dropping action.

[0070] The seed metering assembly includes several seed meterers and a seed metering shaft 20 connecting each seed metering box. The seed meterers are spaced apart in a direction perpendicular to the direction of movement of the seeder, and the seed meterers are connected to each other through the seed metering shaft 20. The seed metering action is realized during the rotation of the seed metering shaft.

[0071] like Figure 5 and Figure 6 As shown, the seed metering device includes seed metering boxes 21, which are connected by a through seed metering shaft 20. A seed metering tube is located at the bottom of each seed metering box 21; in this application, the seed metering tube is a flexible spring hose 22. The seed metering shaft 20 passes through the interior of the seed metering box 21, and a seed-filled wheel 23 is fixed to the outside of the shaft inside the seed metering box. Several seed-filling holes 24 are spaced apart on the outer surface of the seed-filling wheel 23. During the rotation of the seed metering shaft, ginseng seeds from the seed metering box fall into the seed-filling holes 24 of the seed-filling wheel and rotate with the seed metering shaft. When the seed metering shaft rotates to the point where the seed-filling wheel faces downwards, the seeds inside the seed-filling wheel automatically fall under gravity and are discharged along the flexible spring hose 22.

[0072] In this application, the seed-discharging hole 24 on the outer surface of the ginseng seed stalk is a double-tiered slot, meaning that the inner wall of the slot includes an inclined surface and a vertical surface. The side of the slot facing the opening is inclined, and the side facing the bottom of the slot is vertical. American ginseng seeds first enter the slot along the inclined surface, and then, guided by the vertical surface, enter the slot further. Increasing the opening of the double-tiered slot increases the seed filling rate. Seed-introducing rows are provided on the two symmetrical outer sides of the double-tiered slot, each row including several spaced disturbance protrusions 26. These rows are inclined towards the double-tiered slot, disturbing the seed population and guiding the seeds towards the slot, further improving the seed filling rate.

[0073] The two ends of the seed metering shaft are connected to the commutators on both sides via one-way ratchet mechanisms. During the operation of the two commutators, power is transmitted to the seed metering shaft through the one-way ratchet mechanisms. The synchronous operation of the two commutators and the synchronous operation of the two one-way ratchet mechanisms drive the seed metering shaft to rotate, thus effectively ensuring the rotation of the seed metering shaft.

[0074] The one-way ratchet mechanism includes a second rocker arm 27, a third link 28, a fourth link 29, a paddle 30, and a one-way ratchet 31. The one-way ratchet 31 is fixed to the end of the seed metering shaft 20. Therefore, in this application, a one-way ratchet 31 is fixed to each end of the seed metering shaft 20. One end of the second rocker arm 27 is fixedly connected to the first output shaft of the commutator, and the other end of the second rocker arm 27 is hinged to the third link 28. The other end of the third link 28 is vertically fixedly connected to the fourth link 29. A one-way paddle 30 is wound around the fourth link 29, and the one-way paddle 30 is connected to the fourth link 29 by a return spring 32.

[0075] The one-way lever 30 is located between the two clamping plates 33. One end of the clamping plate 33 is rotatably connected to the seeding shaft 20, and the other end of the clamping plate 33 is rotatably connected to the fourth connecting rod 29. The two clamping plates 33 are located on the outer sides of the one-way ratchet 31. By setting the two clamping plates 33, the one-way lever can be limited, and the swing of the third connecting rod can also be limited to a certain extent.

[0076] like Figure 7 As shown, one side of the ratchet teeth of the one-way ratchet is an inclined tooth surface 34, and the one-way lever 30 contacts the inclined tooth surface 34 of the ratchet teeth. When the one-way lever 30 rotates along the inclined direction of the inclined tooth surface of the ratchet teeth, the one-way lever acts as a lever on the one-way ratchet 31, thereby realizing the rotation of the one-way ratchet 31; when the one-way lever 30 rotates in the opposite direction to the inclined direction of the inclined tooth surface of the ratchet teeth, the one-way lever 30 passes over the one-way ratchet teeth 31 and automatically returns to its original position under the elastic force of the return spring 32, at which time the one-way ratchet 31 does not rotate. Therefore, the one-way rotation of the ratchet is realized.

[0077] During the process of the one-way paddle 30 actuating the ratchet, the return spring 32 undergoes elastic deformation, thereby causing the position of the one-way paddle 30 to change. To prevent the one-way paddle 30 from disengaging from the ratchet due to the elastic deformation of the return spring 32, a backstop 35 is fixed to the circumferential outer surface of the ratchet. When the one-way paddle 30 pushes the ratchet, the backstop 35 contacts the one-way paddle 30 and applies a certain force to the one-way paddle 30 to prevent it from disengaging from the ratchet.

[0078] In this embodiment, during the rotation of the first output shaft of the commutator 12, the second rocker arm 27 is driven to rotate. At this time, the second rocker arm 27 drives the third link 28 to reciprocate, and the reciprocating rotation of the fourth link 29 is achieved during the reciprocating rotation of the third link 28. When the fourth link 29 rotates counterclockwise, the one-way lever 30 pushes the ratchet downwards, and with the assistance of the backstop 35, one intermittent rotation of the one-way ratchet is completed. The single-line ratchets on both sides rotate simultaneously, driving the seed metering shaft to rotate, thereby realizing one seed metering process of the seed meterer. When the fourth link 29 rotates counterclockwise, the one-way lever 30 passes the ratchet in sequence and returns to its original position under the action of the return spring 32. At this time, the one-way ratchet does not rotate.

[0079] The seed-dropping section is located below the seed metering unit. It comprises several beaks 36, arranged in a one-to-one correspondence with each seed metering unit; that is, one beak is positioned below each seed metering unit. The American ginseng seeds discharged from each seed metering unit fall directly into the corresponding beak along the spring hose 22 under the influence of gravity. The movement of the beaks creates planting holes in the soil and disposes the American ginseng seeds from the beaks into these holes.

[0080] The beak consists of a first beak plate and a second beak plate, connected at their upper ends by a rotating shaft. A spring is wound around the annular outer side of the rotating shaft. The top ends of the first and second beak plates are open, while their bottom ends are closed. Therefore, when ginseng seeds fall into the beak, they remain inside due to the closed bottom end. As the beak moves downwards, a seed hole is formed when the lower part of the beak inserts into the soil. A tongue plate inside the beak moves up and down. When the tongue plate moves downwards and opens the bottom of the beak, the ginseng seeds can fall through the opening into the seed hole, thus achieving seed placement.

[0081] like Figure 8 As shown, the tops of several duckbill protuberances are fixedly connected to a fixed pressure plate 37 located behind the duckbill. Simultaneously, a linkage pressure plate 38 is located in front of the top of the duckbill. The linkage pressure plate 38 and the fixed pressure plate 37 are slidably connected, meaning the distance between them is adjustable under external force. When the distance between the linkage pressure plate 38 and the fixed pressure plate 37 decreases, since the position of the fixed pressure plate remains unchanged, the linkage pressure plate 38 moves towards the fixed pressure plate 37 under external force. At this time, the linkage pressure plate 38 and the fixed pressure plate 37 exert a squeezing force on the top of the duckbill, causing the opening at the top of the duckbill to become smaller and the opening at the bottom of the duckbill to become larger, which helps the tongue to open the bottom of the duckbill. In this application, the linkage pressure plate and the fixed pressure plate are simultaneously connected to a linkage pressure plate mechanism, through which the distance between the linkage pressure plate and the fixed pressure plate is adjusted.

[0082] like Figure 9 As shown, the tops of several tongues 39 are fixedly connected to a tongue connecting plate 40 located behind the tongues. Driven by the linkage insertion mechanism, the tongue connecting plate 40 drives the tongues 39 to reciprocate up and down. At the same time, through the linkage insertion mechanism, differential motion between the tongues and the duckbill is achieved, that is, the descending speed of the tongues is faster than the descending speed of the duckbill, and the ascending speed of the tongues is faster than the ascending speed of the duckbill, so as to ensure that the tongues complete the process of opening the duckbill downwards and quickly returning to their original position.

[0083] The tongue-shaped connecting plate 40 is located above the fixed pressure plate 37, and the tongue-shaped connecting plate 40 and the fixed pressure plate 37 are slidably connected. In this embodiment, a rod 50 is fixed on the fixed pressure plate, and a sliding sleeve 51 is provided on the tongue-shaped connecting plate 40. The rod 50 is slidably inserted into the sliding sleeve 51, thereby realizing the slidable connection between the tongue-shaped fixed plate 40 and the fixed pressure plate 37. Figure 10 As shown.

[0084] like Figure 11 and Figure 12 As shown, the linkage insertion mechanism includes two symmetrically arranged insertion brackets 41. The front ends of both insertion brackets 41 are fixedly connected to the rear surface of the fixed pressure plate 37, and the rear ends of both insertion brackets 41 are slidably connected to the frame via first sliders 42. Simultaneously, the two insertion brackets 41 are connected to the second output shafts of the two commutators via connecting rods. In this embodiment, the insertion brackets 41 are connected to the second output shafts of the commutator 12 via a fifth connecting rod 43 and a sixth connecting rod 44: the second output shaft of the commutator is fixedly connected to the upper end of the fifth connecting rod 43, the bottom end of the fifth connecting rod 43 is hinged to the top end of the sixth connecting rod 44, and the bottom end of the sixth connecting rod 44 is hinged to the insertion bracket 41. The first hinge point between the sixth connecting rod 44 and the insertion bracket 41 is located in front of the first slider 42. The middle part of the sixth connecting rod 44 is connected to the frame via a limiting slider 45: the limiting slider 45 is fixed to the frame, and the sixth connecting rod 44 is slidably disposed within the limiting slider 45.

[0085] The sixth link 44 is connected to the tongue connecting plate 40 via a differential link 46. The differential link 46 is located between the tongue connecting plate 40 and the sixth link 44. The differential link 46 is hinged to the insertion bracket 41. In this embodiment, the insertion bracket 41 is provided with a support base 47, and the differential link 46 is hinged to the support base 47. The hinge point between the differential link 46 and the support base 47 is the second hinge point. The distance between the front end of the differential link 46 and the second hinge point is greater than the distance between the rear end of the differential link and the second hinge point. By varying the distances between the two ends of the differential link and the second hinge point, the movement speeds of the two ends of the differential link are different, with the movement speed of the front end of the differential link being greater than that of its rear end.

[0086] The front end of the differential link 46 is connected to the upper end of the eighth link 48, and the lower end of the eighth link 48 is connected to the tongue connecting plate 40. In this embodiment, the lower end of the eighth link 48 is connected to the sliding sleeve. The rear end of the differential link is hinged to the front end of the seventh link 49. The rear end of the seventh link 49 is hinged to the lower middle part of the sixth link 44.

[0087] When the commutator is working, the fifth link 43 connected to the second output shaft of the commutator performs a reciprocating swing motion. When the fifth link 43 rotates clockwise and drives the sixth link 44 to move downward, the sixth link 44 drives the fixed pressure plate 37 to move downward through the insertion bracket 41, and drives the duckbill on the fixed pressure plate 37 to perform the insertion action downward.

[0088] The sixth link 44 and the sowing bracket 41 achieve a fixed angle change under the action of the limiting slider 45. At this time, the angle between the sixth link 44 and the sowing bracket 41 increases. The seventh link 49, under the action of the sixth link 44, pulls the differential link 46. The front end of the differential link 46 quickly presses down on the eighth link 48, which in turn drives the tongue plate 40 to move downward quickly. The falling speed of the tongue plate is faster than the downward movement speed of the duckbill. In the same amount of time, the stroke of the tongue plate is longer than that of the duckbill, thus pushing the seeds out of the duckbill. When the duckbill moves to the lowest position, the tongue plate presses the seeds in the duckbill into the soil, completing the planting process of American ginseng seeds.

[0089] The linkage pressure plate mechanism includes a pull rope rod 52, a pull rope 53, and an insert rod 54. The sixth connecting rods 44 on both sides are fixedly connected by the pull rope rod 52, and the linkage pressure plate 38 and the fixed pressure plate 37 are slidably connected by the insert rod 54. The front end of the pull rope 53 is connected to the insert rod 54, and the rear end of the pull rope 53 is connected to the pull rope rod 52. In this embodiment, to prevent the pulling direction of the pull rope from deviating, a pulley 55 is provided at the rear of the fixed pressure plate 37. The pulley 55 is rotatably connected to the fixed pressure plate 37, and the bottom of the pulley 55 is always in contact with the pull rope 53. The pulley limits the pulling direction of the pull rope.

[0090] During the downward movement of the tongue, the pull rope 52 pulls the pull rope 53, which in turn pulls the linkage pressure plate 38 backward through the insertion rod 54. Under the pulling force, the linkage pressure plate 38, together with the fixed pressure plate 37, squeezes the top of the duckbill, causing the bottom of the duckbill to open at a certain angle, facilitating the downward movement of the tongue and reducing friction between the tongue and the duckbill. In existing duckbill systems, the duckbill and tongue work together, but in actual use, the downward thrust of the tongue is large, easily damaging the duckbill. In this application, during the downward thrust of the tongue, the bottom of the duckbill can actively open at a certain angle under the action of the linkage pressure plate mechanism, facilitating the tongue to push out the seed, reducing the wear force of the tongue on the duckbill, and extending the service life of the duckbill.

[0091] After the planting process is completed, the fifth link 43 swings counterclockwise, causing the sixth link 44 to move upward. The sixth link 44 then lifts the duckbill fixing plate and the duckbill itself using the planting bracket. Simultaneously, the angle between the sixth link 44 and the planting bracket 41 decreases, causing the sixth link 44 to push the seventh link 49 downward, which in turn pushes the differential link 46 downward. The differential link 46 then drives the eighth link 48 and the tongue connecting plate 40 to move rapidly upward, causing the tongue to quickly retract into the duckbill. At this point, the tension on the pull rope 53 disappears, and the clamping force on the top of the duckbill disappears. The upper part of the duckbill automatically resets under the elastic force of its own spring. Simultaneously, the linkage pressure plate 38 automatically resets, and the bottom of the duckbill automatically closes, effectively preventing soil backflow and preventing soil from pressing the seeds into the duckbill.

[0092] During the return stroke of the linkage seeding mechanism, the one-way ratchet mechanism completes one rotation under the linkage action, completing the seeding. The seeds in the seed metering box fall into the duckbill, preparing for the next seeding operation.

[0093] The linkage sowing mechanism is similar to a mantis's arm, enabling near-vertical sowing via a connected duckbill. It features a high degree of overlap between the sowing and insertion trajectories, reducing soil disturbance during sowing and making it suitable for sowing densely planted plants, including American ginseng.

[0094] Since duckbill seeding leaves holes, this application uses a leveling mechanism to cover these holes; otherwise, seed development will be affected. Figure 3 As shown, the leveling mechanism includes floating connecting rods 56 symmetrically arranged on both sides, a connecting shaft 57, and several rollers 58 mounted on the rollers. The front ends of the two floating connecting rods 56 are respectively hinged to the frame, and the rear ends of the two floating connecting rods 56 are connected by the connecting shaft 57. Since the floating connecting rods 56 are hinged to the frame, the floating connecting rods 56 can drive the floats 58 to float on the soil.

[0095] Several rollers 58 are rotatably mounted on the connecting shaft 57. Each roller 58 has soil-turning needles 59 arranged in a spiral direction, with the needles 59 on adjacent rollers being symmetrically positioned. As the rollers 58 rotate, the counter-directionally distributed soil-turning needles 59 between adjacent rollers 58 effectively counteract the radial reaction force of the soil.

[0096] As the machine moves forward, the roller rotates while the rotating soil-turning needles level the soil holes. Through the connection between the floating connecting rod 56 and the float 58, the float 58 can always float on the soil, which greatly reduces the soil carrying capacity of the traditional leveling mechanism, reduces the disturbance to the sown seeds, and increases the seed germination and survival rate.

[0097] The working principle of this ginseng planting device is as follows: During the rotation of the traveling wheels, the entire device moves forward. As the device moves forward, the diesel engine operates. The power output from the diesel engine is reduced in speed by the reducer and then transmitted to the commutators on both sides via the transmission mechanism. Simultaneously, the commutators on both sides drive the linkage planting mechanism through the second output shaft. This linkage planting mechanism moves the beak downwards, simultaneously causing the tongue to move rapidly downwards. When the beak reaches its lowest point, the tongue opens the bottom of the beak, allowing the seeds inside to fall into the soil.

[0098] At the same time, the linkage pressure plate mechanism pulls the linkage pressure plate towards the fixed pressure plate, generating a squeezing force on the upper part of the duckbill, assisting the bottom of the duckbill to open, and reducing the resistance during the downward movement of the tongue.

[0099] During the return stroke of the commutator-driven linkage insertion mechanism, the duckbill moves upward, and the tongue moves upward rapidly at the same time. The tension on the linkage pressure plate disappears, and the squeezing force on the upper part of the duckbill disappears as well. The upper part of the duckbill automatically resets, and the bottom of the duckbill is in a closed state.

[0100] At the same time, the commutators on both sides drive the one-way ratchet mechanism through the first output shaft, and drive the seed metering shaft of the seed metering unit to rotate through the single-row ratchet mechanism. With the one-time intermittent movement of the seed metering shaft, a seed metering process is realized, and the seeds in the seed metering unit are discharged into the duckbill, waiting for the next seed dropping action.

[0101] The above provides a detailed description of a precision seeding machine provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precision seeding machine, comprising a frame, characterized in that, The frame is equipped with a seeding mechanism, a reversing mechanism, a power mechanism, and a leveling hole structure from front to back. The power mechanism is connected to the reversing mechanism through a transmission mechanism. The seed metering mechanism includes a seed metering unit and a duckbill seed dropping part. The seed metering unit is connected to the reversing mechanism via a one-way ratchet mechanism, and the duckbill seed dropping part is connected to the reversing mechanism via a linkage insertion mechanism. The seed metering unit includes several seed meterers, which are spaced apart along a direction perpendicular to the direction of movement of the seed meterers, and the bottom of the seed meterers is connected to a spring hose. Several seed meterers are connected by a seed metering shaft. A seed metering wheel is fixed on the outside of the seed metering shaft inside the seed metering box. Several seed dropping holes are provided at intervals on the outer surface of the seed dropping holes. Seed guiding rows are provided on the two symmetrical outer sides of the seed dropping holes. The seed guiding rows are inclined towards the seed dropping holes. The seed guiding rows include several spaced disturbance protrusions. The two inner wall surfaces of the double-stage slot are symmetrically arranged, including an inclined surface and a vertical surface. The side of the slot facing the opening is an inclined surface, and the side of the slot facing the bottom of the slot is a vertical surface. The seed-dropping section of the duckbill includes several duckbills, and there is a one-to-one correspondence between the duckbills and the seed metering device above them. The seeds in the seed metering device fall into the duckbill through a spring hose, and the duckbill is equipped with a tongue. A linkage pressure plate is provided at the front of the upper part of the duckbill, and a fixed pressure plate is provided at the rear of the upper part of the duckbill. The linkage pressure plate and the fixed pressure plate are slidably connected. The distance between the linkage pressure plate and the fixed pressure plate can be adjusted through the linkage pressure plate mechanism. The fixed pressure plate is connected to the linkage insertion mechanism. The top of the tongue is fixed to the tongue connecting plate, which is located above the fixed pressure plate. The tongue connecting plate and the fixed pressure plate are slidably connected, and the tongue connecting plate is connected to the linkage insertion mechanism. One-way ratchet mechanisms include: One-way ratchet, with one-way ratchet fixed at both ends of the seeding shaft, one side of the ratchet teeth of the one-way ratchet teeth is an inclined tooth surface, and a backstop pin is fixed at the circumferential outer surface of the ratchet teeth; One-way paddle contacts the inclined tooth surface of the one-way ratchet, the anti-reverse stop contacts the one-way paddle, the one-way paddle is wound around the fourth link, and a return spring connects the one-way paddle and the fourth link. The clamping plate and the one-way lever are located between the two clamping plates. One end of the clamping plate is hinged to the seeding shaft, and the other end of the clamping plate is rotatably connected to the fourth connecting rod. The fourth link is vertically and fixedly connected to one end of the third link, and the other end of the third link is connected to the reversing mechanism via the second rocker arm. The linkage insertion mechanism includes: Two symmetrically arranged insertion brackets are provided. The front end of the insertion bracket is fixedly connected to the rear surface of the fixed pressure plate, and the rear end of the insertion bracket is slidably connected to the frame. The insertion bracket is sequentially connected to the output end of the reversing mechanism through the sixth link and the fifth link. The middle part of the sixth link is connected to the frame through the limiting slider. The differential linkage is rotatably connected to the frame, and the distance between the hinge point of the differential linkage and the frame and the front end of the differential linkage is greater than the distance between the hinge point and the rear end of the differential linkage, so that the movement speed of the front end of the differential linkage is greater than the movement speed of its rear end. The rear end of the differential linkage is connected to the lower middle part of the sixth linkage through the seventh linkage. The eighth link is hinged at its upper end to the front end of the differential link and at its lower end to the tongue plate connecting plate. The linkage pressure plate mechanism includes: The two sixth links are fixedly connected by a rope rod. The insert rod, the linkage pressure plate and the fixed pressure plate are slidably connected by the insert rod. Several insert rods are fixed on the rear surface of the linkage pressure plate. The corresponding fixed pressure plate is provided with through holes, and the insert rods are slidably set in the through holes. The pull rope is connected to the insertion pole at its front end and to the pull rope rod at its rear end.

2. The precision seeding machine according to claim 1, characterized in that, The commutation mechanism includes two commutators, and the two commutators are symmetrically arranged with respect to the direction of movement of the machine; The input shaft of the commutator is connected to the output end of the power mechanism through a transmission mechanism. The first output end of the commutator is connected to the seed metering unit through a one-way ratchet mechanism. The second output end of the commutator is connected to the duckbill seed dropping part through a linkage insertion mechanism.

3. A precision seeding machine according to claim 2, characterized in that, The transmission mechanism includes: The linkage assembly includes a ninth link, a tenth link, and an eleventh link. One end of the ninth link is connected to the power mechanism for transmission. The other end of the ninth link is hinged to one end of the tenth link. The other end of the tenth link is hinged to one end of the eleventh link. The other end of the eleventh link is connected to a rotating shaft. The rotating shaft is rotatably connected to the frame and is located in the middle position between the two commutators; The first swing arm is fixedly connected to the front end of the rotating shaft at its middle position. One end of the first swing arm is connected to the commutator on one side through the first connecting rod, and the other end of the first swing arm is connected to the commutator on the other side through the second connecting rod.

4. The precision seeding machine according to claim 1, characterized in that, The flat-hole mechanism includes: Two symmetrically arranged floating rods are hinged to the frame at their front ends, and the rear ends of the two floating rods are fixedly connected by a connecting shaft. The roller has several rollers that can be rotatably mounted on the connecting shaft. The rollers are equipped with soil-turning needles arranged in a spiral direction, and the soil-turning needles on adjacent rollers are symmetrically arranged.

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