Precise hill planter

Abstract

The invention relates to agricultural machinery, in particular to a precise hill planter. Comprising a rack, a seed metering mechanism, a reversing mechanism, a power mechanism and a leveling structure are sequentially arranged on the rack from front to back, and the power mechanism is connected with the reversing mechanism through a transmission mechanism; the seed metering mechanism comprises a seed metering device group and a duckbilled seed falling part, the seed metering device group is in transmission connection with the reversing mechanism through a one-way ratchet mechanism, and the duckbilled seed falling part is in transmission connection with the reversing mechanism through a connecting rod insertion seeding mechanism. Automatic and accurate seeding and falling of crop seeds can be realized, the seeding efficiency of crops is improved, and the service life of the seeding machine is prolonged.

Description

Technical Field

[0001] The invention relates to agricultural machinery, in particular to a precision seed drill. Background Art

[0002] At present, American ginseng is usually sown manually or semi-manually, and both manual and semi-manual sowing processes require manual assistance, which has low sowing efficiency, consumes a lot of manpower and material resources, and has high sowing costs.

[0003] At present, some fully automatic sowing machines for American ginseng have also appeared, most of which adopt an inner disc star wheel duckbill structure. Due to its structural characteristics, the wheels are bound to cause greater soil disturbance during the rolling and sowing process. American ginseng is a densely planted plant, and the spacing between seeds is very small. When the above-mentioned sowing machines are used for dense planting, it is easy for the holes to interfere with each other, resulting in unstable seed sowing depth, plant spacing and row spacing, affecting plant growth and development. Therefore, when using the above-mentioned sowing machines to sow American ginseng seeds, in order to reduce inter-species interference, the plant spacing can only be widened, which reduces the yield per mu. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose a precision hole seeder that can realize automatic and precise seeding and dropping of crop seeds, improve the seeding efficiency of crops, and extend the service life of the seeder.

[0005] The technical solution of the present invention is: a precision hole seeder, comprising a frame, wherein a seeding mechanism, a reversing mechanism, a power mechanism and a flat hole structure are arranged on the frame from front to back, and the power mechanism is connected with the reversing mechanism through a transmission mechanism;

[0006] The seeding mechanism comprises a seeding device group and a duckbill seeding part. The seeding device group is connected to the reversing mechanism through a one-way ratchet mechanism, and the duckbill seeding part is connected to the reversing mechanism through a connecting rod insertion mechanism.

[0007] In the present invention, the reversing mechanism includes two commutators, and the two commutators are symmetrically arranged relative 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 seeding device group through a one-way ratchet mechanism, and the second output end of the commutator is transmission-connected to the duckbill seeding part through a connecting rod insertion mechanism.

[0009] The transmission mechanism includes:

[0010] The connecting rod group includes the ninth connecting rod, the tenth connecting rod, and the eleventh connecting rod. One end of the ninth connecting rod is drivingly connected to the power mechanism, the other end of the ninth connecting rod is hinged to one end of the tenth connecting rod, the other end of the tenth connecting rod is hinged to one end of the eleventh connecting rod, and the other end of the eleventh connecting rod is connected to the rotating shaft.

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

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

[0013] The seed metering device group includes several seed metering devices. The seed metering devices are arranged at intervals perpendicular to the moving direction of the seed metering devices, and a spring hose is connected to the bottom of the seed metering devices.

[0014] Several seed metering devices are connected through a seed metering shaft passing through. An indentation wheel is fixed on the outside of the seed metering shaft located in the seed metering box. Several seed dropping holes are arranged at intervals on the outer surface of the indentation wheel. Seed introduction rows are respectively arranged on the two symmetric outer sides of the seed dropping holes. The seed introduction rows are inclined towards the seed dropping holes, and the seed introduction rows include several disturbance bumps arranged at intervals.

[0015] The two inner wall surfaces of the symmetrically arranged double-step slot holes include an inclined surface and a vertical surface. One side of the slot hole facing the opening is an inclined surface, and one side of the slot hole facing the bottom of the slot is a vertical surface.

[0016] The duckbill seed dropping part includes several duckbills, and there is a one-to-one correspondence between the duckbills and the seed metering devices above them. The seeds in the seed metering devices fall into the duckbills through the spring hoses, and a tongue is arranged in the duckbills.

[0017] A linkage pressure plate is arranged in front of the upper part of the duckbill, and a fixed pressure plate is arranged behind the upper part of the duckbill. The linkage pressure plate and the fixed pressure plate are slidably connected. Through the linkage pressure plate mechanism, the distance between the linkage pressure plate and the fixed pressure plate is adjusted, and the fixed pressure plate is connected to the connecting rod sowing mechanism.

[0018] The top end of the tongue is fixed on the tongue connecting plate. The tongue connecting plate is located above the fixed pressure plate, and the tongue connecting plate and the fixed pressure plate are slidably connected. The tongue connecting plate is connected to the connecting rod sowing mechanism.

[0019] The one-way ratchet mechanism includes:

[0020] One-way ratchets are respectively fixed at both ends of the seed metering shaft. One side tooth surface of the ratchet teeth of the one-way ratchets is an inclined tooth surface, and a reverse stop column is fixed on the outer circumferential surface of the ratchet teeth.

[0021] A one-way paddle contacts the inclined tooth surface of the one-way ratchet, a backstop column contacts the one-way paddle, the one-way paddle is wound around the fourth connecting rod, and a return spring is connected between the one-way paddle and the fourth connecting rod;

[0022] A clamping plate, a one-way paddle is 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 connecting rod is vertically fixedly connected to one end of the third connecting rod, and the other end of the third connecting rod is transmission-connected to the reversing mechanism through the second swing rod.

[0024] The connecting rod insertion mechanism includes:

[0025] Two symmetrically arranged insertion brackets, the front end of the insertion bracket is fixedly connected to the rear surface of the fixed pressure plate, 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 connecting rod and the fifth connecting rod, and the middle part of the sixth connecting rod is connected to the frame through a limit slider;

[0026] A differential link is rotatably connected to the frame, and a distance between a hinge point between the differential link and the frame and a front end of the differential link is greater than a distance between the hinge point and a rear end of the differential link, so that a movement speed of the front end of the differential link is greater than a movement speed of its rear end, and the rear end of the differential link is connected to a middle and lower portion of the sixth link through a seventh link;

[0027] The eighth connecting rod has an upper end hinged to the front end of the differential connecting rod and a lower end connected to the tongue connecting plate.

[0028] The linkage pressure plate mechanism includes:

[0029] A pull rope rod, wherein the two sixth connecting rods are fixedly connected by the pull rope rod;

[0030] Insertion rod, the linkage pressure plate and the fixed pressure plate are slidably connected by the insertion rod, a plurality of insertion rods are fixed on the rear side surface of the linkage pressure plate, and a through hole is provided on the corresponding fixed pressure plate, and the insertion rod can be slidably arranged in the through hole;

[0031] The front end of the pull rope is connected to the insertion rod, and the rear end is connected to the pull rope rod.

[0032] The flat hole mechanism includes:

[0033] Two symmetrically arranged floating connecting rods, the front ends of which are hinged to the frame, and the rear ends of the two floating connecting rods are fixedly connected via a connecting shaft;

[0034] The roller has a plurality of rollers rotatably arranged on the connecting shaft, and the rollers are provided with soil turning needles which are arranged in a rotational direction, and the soil turning needles on two adjacent rollers are symmetrically arranged.

[0035] The beneficial effects of the present invention are:

[0036] (1) The present application adopts a set of power mechanisms to realize linkage seeding, which solves the problem that when the connecting rod insertion mechanism and the seeding mechanism adopt two sets of power mechanisms, the coordination of seeding action is poor, the action time difference is easy to occur, and it is difficult to re-seed and miss seeds.

[0037] (2) The seeder realizes the seeding and dropping of American ginseng seeds. The entire device realizes automatic seeding and dropping during the walking process, thereby improving the sowing efficiency of American ginseng seeds and reducing the sowing cost;

[0038] (3) Since American ginseng seeds are flat, the seed populations are easily pressed against each other to form dead points during the seed filling process, resulting in serious seed jamming and seed leakage. The double-step slot holes designed for the eyelet wheel on the seed discharging shaft and the seed introduction row formed by the protrusions in the present application gather the seeds to the double-step slot holes, which can effectively improve the dead points between seeds and prevent the jamming of seeds caused by stacking, thereby ensuring that the American ginseng seeds can be smoothly placed in the double-step slot hole-shaped seeding hole, thereby improving the seed filling efficiency.

[0039] (4) Through the one-way ratchet mechanism, the intermittent rotation of the seeding shaft is controlled by the one-way ratchet, so that the American ginseng seeds can accurately fall into the seeding hole and can cooperate with the seeding action of the duckbill, further improving the sowing efficiency;

[0040] (5) During the duckbill seeding process, the duckbill moves downward through the connecting rod insertion mechanism; at the same time, the tongue moves downward quickly through the differential connecting rod, and the movement speed of the tongue is greater than the descending speed of the duckbill. Therefore, 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, so that the seeds in the duckbill fall into the soil, completing the seeding process; during the return process, the upward movement speed of the tongue is greater than the rising speed of the duckbill, ensuring the smooth seeding of the seeds;

[0041] (6) When the tongue moves downward to open the bottom of the duck's bill, the tongue constantly breaks through the duck's bill to push out the seeds in the duck's bill, and the tongue and the duck's bill are constantly rubbed against each other, causing continuous wear and tear. In order to reduce the impact of the tongue on the duck's bill and the damage to the duck's bill during the impact, the present application is provided with a linkage pressure plate mechanism. When the tongue is pushing the duck's bill downward, the linkage pressure plate and the fixed pressure plate squeeze the top of the duck's bill to assist in opening the bottom of the duck's bill, thereby reducing the impact of the tongue on the duck's bill, reducing damage to the duck's bill, and extending the service life of the duck's bill.

[0042] (7) The connecting rod planting mechanism in the present application realizes trajectory convergence, so that the duckbill connected to the mechanism can achieve an action similar to upright planting, with a high degree of overlap in the trajectories of entering and exiting the soil, thereby minimizing the disturbance of the soil during the duckbill planting process, ensuring the quality of sowing, and being beneficial to the growth and development of the plants.

[0043] In summary, through the cooperation among the one-way ratchet mechanism, the connecting rod dibbling mechanism, and the linkage pressure plate mechanism, the device can not only achieve precise seed metering and dropping of crop seeds, but also reduce the disturbance to the soil during the dibbling process, reduce the interference with the sown holes, and ensure the sowing quality. This seeder can be used not only for sowing American ginseng seeds, but also for sowing other crop seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is the front view structural schematic diagram of the present invention;

[0045] Figure 2 is the top view structural schematic diagram of the present invention;

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

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

[0048] Figure 5 is the structural schematic diagram of the cell wheel;

[0049] Figure 6 is the structural schematic diagram of the one-way ratchet mechanism;

[0050] Figure 7 is the structural schematic diagram of the one-way ratchet;

[0051] Figure 8 is the structural schematic diagram of the duckbill;

[0052] Figure 9 is the structural schematic diagram of the tongue plate;

[0053] Figure 10 is the sliding connection structural schematic diagram of the tongue plate connecting plate and the fixed pressure plate;

[0054] Figure 11 is the first structural schematic diagram of the connecting rod dibbling mechanism;

[0055] Figure 12 is the second structural schematic diagram of the connecting rod dibbling mechanism.

[0056] In the figure: 1 frame; 2 driving running wheel; 3 driven running wheel; 4 seed metering mechanism; 5 reversing mechanism; 6 power mechanism; 7 hole flattening mechanism; 8 one-way ratchet mechanism; 9 connecting rod dibbling mechanism; 10 diesel engine; 11 speed reducer; 12 commutator; 13 rotating shaft; 14 first swing rod; 15 first connecting rod; 16 second connecting rod; 17 ninth connecting rod; 18 tenth connecting rod; 19 eleventh connecting rod; 20 seed metering shaft; 21 seed metering box; 22 spring hose; 23 cell wheel; 24 seed metering hole; 26 disturbing bump; 27 second swing rod; 28 third connecting rod; 29 fourth connecting rod; 30 paddle; 31 one-way ratchet; 32 return spring; 33 splint; 34 inclined tooth surface; 35 backstop post; 36 duckbill; 37 fixed pressing plate; 38 linkage pressing plate; 39 tongue piece; 40 tongue piece connecting plate; 41 dibbling support; 42 first slider; 43 fifth connecting rod; 44 sixth connecting rod; 45 limit slider; 46 differential connecting rod; 47 support seat; 48 eighth connecting rod; 49 seventh connecting rod; 50 inserting rod; 51 sliding sleeve; 52 pulling rope rod; 53 pulling rope; 54 inserting rod; 55 pulley; 56 floating connecting rod; 57 connecting shaft; 58 drum; 59 soil turning needle. Detailed implementation manners

[0057] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made in conjunction with the accompanying drawings.

[0058] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0059] As Figures 1 to 3 shown, the precision dibbler of the present invention includes a frame 1. Driving wheels are respectively provided at the front end and the rear end of the frame. Among them, the driving wheel at the rear end is the driving running wheel 2, and this running wheel is in transmission connection with the power mechanism; the running wheel at the front end is the driven running wheel 3. During the running of the driving running wheel 2, the driven running wheel 3 is driven to run through chain drive, so as to realize the forward movement of the whole seeder.

[0060] The seed metering mechanism 4, the reversing mechanism 5, the power mechanism 6 and the hole flattening mechanism 7 are successively arranged on the frame from front to back. The power mechanism 6 is connected with the reversing mechanism 5 through a transmission mechanism. The reversing mechanism 5 is connected with the seed metering mechanism 4. The power generated by the power mechanism 6 is successively transmitted to the seed metering mechanism 4 through the transmission mechanism and the reversing mechanism 5, so as to complete the seed metering action. The hole flattening mechanism 7 is connected with the rear part of the frame.

[0061] The metering mechanism includes a metering unit group and a duckbill seed dropping part. Among them, the metering unit group is connected to the reversing mechanism 5 through a one-way ratchet mechanism 8. The power output by the reversing mechanism 5 is transmitted to the metering unit group through the one-way ratchet mechanism 8 to complete the metering action of the metering unit group. The duckbill seed dropping part is connected to the reversing mechanism 5 through a connecting rod inserting and sowing mechanism 9. The power output by the reversing mechanism 5 is transmitted to the duckbill seed dropping part through the connecting rod inserting and sowing mechanism 9 to complete the seed dropping action.

[0062] In this embodiment, the power mechanism 6 is arranged at the rear of the frame. The power mechanism includes a diesel engine 10 and a reducer 11. A reducer 11 is provided at the output shaft of the diesel engine 10. The output shaft of the reducer 11 is in transmission connection with the reversing mechanism through 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] At the same time, another output end of the reducer is connected with a power output shaft, and the power output shaft transmits the power to the driving wheel 2 through chain drive.

[0064] The reversing mechanism is arranged on the frame in front of the power mechanism. The reversing mechanism in this embodiment includes two reversers 12, and the two reversers 12 are symmetrically arranged with respect to the moving direction of the seeder. The change of the power direction is realized through the reverser.

[0065] As Figure 4 shown, the transmission mechanism of the present application includes a connecting rod group, a rotating shaft 13, a first swing rod 14, a first connecting rod 15 and a second connecting rod 16. The rotating shaft 13 is rotatably connected to the frame, and the rotating shaft 13 is located at the middle position between the two reversers. The rear end of the rotating shaft 13 is in transmission connection with the output shaft of the reducer 11 through the connecting rod group, and the front end of the rotating shaft 13 is fixedly connected to the middle position of the first swing rod 14. One end of the first swing rod 14 is in transmission connection with the output shaft of one side reverser through the first connecting rod 15, and the other end of the first swing rod 14 is in transmission connection with the output shaft of the other side reverser through the second connecting rod 16.

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

[0067] The power output by the reducer 11 is transmitted to the ninth connecting rod 17. The ninth connecting rod 17 performs a rotational motion, and the power is transmitted to the eleventh connecting rod 19 by the tenth connecting rod 18 to realize the swinging of the eleventh connecting rod 19. Through the length difference between the ninth connecting rod 17 and the eleventh connecting rod 19, the rotational motion of the ninth connecting rod 17 is converted into the swinging of the eleventh connecting rod 19.

[0068] The power output by the reducer 11 is transmitted to the rotating shaft 13 through the connecting rod group, driving the rotating shaft 13 to rotate. At the same time, the rotating shaft 13 drives the first swing rod 14 to rotate in the vertical direction. When the first swing rod 14 swings, the power is transmitted to the commutators on both sides through the first connecting rod 15 and the second connecting rod 16 respectively.

[0069] The commutator is provided with two output ends. The first output shaft of the commutator is connected to the seeding device group through the one-way ratchet mechanism 8, and part of the power of the commutator is transmitted to the seeding device group through the one-way ratchet mechanism 8, so that the seeding device group completes the seeding action. The second output shaft of the commutator is connected to the duckbill seeding part through the connecting rod insertion mechanism 9, and part of the power of the commutator is transmitted to the duckbill seeding part through the connecting rod insertion mechanism 9, so that the duckbill completes the seeding action.

[0070] The seeding device group includes several seeding devices and a seeding shaft 20 connecting each seeding box. Several seeding devices are arranged at intervals in a direction perpendicular to the movement direction of the seeder, and the seeding devices are connected by the seeding shaft 20. The seeding action is realized during the rotation of the seeding shaft.

[0071] like Figure 5 and Figure 6 As shown, the seeding device includes a seeding box 21, each seeding box 21 is connected by a seeding shaft 20 that is arranged through, and a seeding tube is arranged at the bottom of the seeding box 21. The seeding tube in the present application adopts a spring hose 22. The seeding shaft 20 passes through the interior of the seeding box 21, and a socket wheel 23 is fixed on the outside of the seeding shaft located in the seeding box, and a plurality of seeding holes 24 are arranged at intervals on the outer surface of the socket wheel 23. During the rotation of the seeding shaft, the American ginseng seeds in the seeding box fall into the seeding holes 24 of the socket wheel and rotate with the seeding shaft. When the seeding shaft rotates until the socket wheel is arranged downward, the seeds in the socket wheel automatically fall down under the action of gravity and are discharged along the spring hose 22.

[0072] In the present application, the seeding hole 24 on the outer surface of the socket wheel is a double-step slot, that is, the inner wall surface of the slot includes 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 American ginseng seeds first enter the slot along the inclined surface, and then enter the slot under the guidance of the vertical surface. By increasing the opening of the double-step slot, the seed filling rate is increased. Seed introduction rows are respectively provided at the symmetrical outer sides of the double-step slot, and the seed introduction row includes a number of disturbance bumps 26 arranged at intervals. The seed introduction row is inclined toward the direction of the double-step slot. Through the seed introduction rows on both sides, it can not only disturb the population, but also guide the seeds to move toward the direction of the double-step slot, thereby further improving the seed filling rate.

[0073] The two ends of the seeding shaft are connected to the commutators on both sides through the one-way ratchet mechanism, that is, during the operation of the two commutators, the power is transmitted to the seeding shaft through the one-way ratchet mechanism. The two commutators act synchronously, and the two one-way ratchet mechanisms act synchronously, driving the seeding shaft to rotate through the two one-way ratchet mechanisms, thereby effectively ensuring the rotation of the seeding shaft.

[0074] The one-way ratchet mechanism includes a second swing rod 27, a third connecting rod 28, a fourth connecting rod 29, a paddle 30 and a one-way ratchet 31. The one-way ratchet 31 is fixed to the end of the seeding shaft 20. Therefore, in the present application, a one-way ratchet 31 is fixed to each end of the seeding shaft 20. One end of the second swing rod 27 is fixedly connected to the first output shaft of the commutator, and the other end of the second swing rod 27 is hinged to the third connecting rod 28. The other end of the third connecting rod 28 is vertically fixedly connected to the fourth connecting rod 29. The one-way paddle 30 is wound around the fourth connecting rod 29, and the one-way paddle 30 is connected to the fourth connecting rod 29 through a return spring 32.

[0075] The one-way paddle 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 respectively located on the outer sides of the one-way ratchet 31. By providing the two clamping plates 33, it can not only play a limiting role on the one-way paddle, but also play a certain limiting role on the swing of the third connecting rod.

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

[0077] When the one-way paddle 30 moves the ratchet, the return spring 32 will produce elastic deformation, thereby driving the position of the one-way paddle 30 to change. In order to prevent the one-way paddle 30 from being separated from the ratchet under the elastic deformation of the return spring 32, a reverse stop column 35 is fixed on the circumferential outer surface of the ratchet. When the one-way paddle 30 pushes the ratchet, the reverse stop column 35 contacts the one-way paddle 30 and applies a certain force to the one-way paddle 30 to prevent the one-way paddle from being separated from the ratchet.

[0078] In this embodiment, during the rotation of the first output shaft of the commutator 12, the second swing rod 27 is driven to rotate. At this time, the second swing rod 27 drives the third connecting rod 28 to swing back and forth. During the reciprocating swing of the third connecting rod 28, the reciprocating rotation of the fourth connecting rod 29 is realized. When the fourth connecting rod 29 rotates counterclockwise, the one-way paddle 30 moves the ratchet downward, and at the same time, with the assistance of the reverse stop column 35, the one-way ratchet wheel is intermittently rotated once. The single-line ratchets on both sides rotate at the same time, driving the seeding shaft to rotate, thereby realizing a seeding process of the seeding device. When the fourth connecting rod 29 rotates counterclockwise, the one-way paddle 30 passes the ratchet tooth in sequence and returns to its position under the action of the return spring 32. At this time, the one-way ratchet wheel does not rotate.

[0079] The duckbill seed dropping part is located below the seeding device group. The duckbill seed dropping part includes a plurality of duckbill 36. The duckbill and the seeding device are arranged one by one, that is, a duckbill is arranged below each seeding device. Under the action of gravity, the American ginseng seeds discharged by each seeding device directly fall into the corresponding duckbill along the spring hose 22. Through the action of the duckbill, a seed hole is formed in the soil, and the American ginseng seeds in the duckbill are discharged into the seed hole.

[0080] The duckbill includes a first duckbill piece and a second duckbill piece, the upper ends of the first duckbill piece and the second duckbill piece are connected by a rotating shaft, and a spring is wound around the outer ring of the rotating shaft. The top ends of the first duckbill piece and the second duckbill piece are open, and the bottom ends of the first duckbill piece and the second duckbill piece are closed. Therefore, after the American ginseng seeds fall into the duckbill, they are retained in the duckbill due to the closed bottom of the duckbill. During the downward movement of the duckbill, when the lower part of the duckbill is inserted into the soil, a seed hole will be formed in the soil. A tongue is provided in the duckbill, and the tongue moves up and down in the duckbill. When the tongue moves downward to open the bottom of the duckbill, the American ginseng seeds in the duckbill can fall into the seed hole formed by the duckbill through the opening at the bottom, thereby achieving the planting of American ginseng.

[0081] like Figure 8 As shown, the tops of several duckbills are fixedly connected to a fixed pressure plate 37 arranged at the rear of the duckbills. At the same time, a linkage pressure plate 38 is arranged in front of the top of the duckbills. The linkage pressure plate 38 and the fixed pressure plate 37 are slidably connected, that is, under the action of external force, the distance between the linkage pressure plate 38 and the fixed pressure plate 37 is adjustable. When the distance between the linkage pressure plate 38 and the fixed pressure plate 37 becomes smaller, since the position of the fixed pressure plate remains unchanged, the linkage pressure plate 38 moves toward the fixed pressure plate 37 under the action of external force. At this time, the linkage pressure plate 38 and the fixed pressure plate 37 generate a squeezing force on the top of the duckbills, and the opening at the top of the duckbills becomes smaller. At this time, the opening at the bottom of the duckbills becomes larger, which helps the tongue to open the bottom of the duckbills. In the present application, the linkage pressure plate and the fixed pressure plate are simultaneously connected to the linkage pressure plate mechanism, and the distance adjustment between the linkage pressure plate and the fixed pressure plate is realized through the linkage pressure plate mechanism.

[0082] As Figure 9 shown, the tops of several tongue pieces 39 are fixedly connected to a tongue piece connecting plate 40 arranged behind the tongue pieces. Driven by the connecting rod seeding mechanism, the tongue piece connecting plate 40 drives the tongue pieces 39 to move up and down reciprocally; at the same time, through the connecting rod seeding mechanism, the differential motion between the tongue pieces and the duckbill is realized, that is, the descending speed of the tongue pieces is faster than that of the duckbill, and the ascending speed of the tongue pieces is faster than that of the duckbill, so as to ensure that the tongue pieces complete the actions of spreading the duckbill downward and quickly returning to the original position.

[0083] The tongue piece connecting plate 40 is located above the fixed pressing plate 37, and the tongue piece connecting plate 40 is slidably connected to the fixed pressing plate 37. In this embodiment, an insertion rod 50 is fixed on the fixed pressing plate, and correspondingly, a sliding sleeve 51 is provided on the tongue piece connecting plate 40. The insertion rod 50 is slidably inserted into the sliding sleeve 51, thereby realizing the sliding connection between the tongue piece fixing plate 40 and the fixed pressing plate 37, as Figure 10 shown.

[0084] As Figure 11 and Figure 12 shown, the connecting rod seeding mechanism includes two symmetrically arranged seeding brackets 41. The front ends of the two seeding brackets 41 are fixedly connected to the rear side surface of the fixed pressing plate 37, and the rear ends of the two seeding brackets 41 are respectively slidably connected to the frame through first sliders 42. At the same time, the two seeding brackets 41 are respectively connected to the second output shafts of the two commutators through connecting rods. In this embodiment, the seeding bracket 41 is connected to the second output shaft of the commutator 12 through 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, the bottom end of the sixth connecting rod 44 is hinged to the seeding bracket 41, and the first hinge point between the sixth connecting rod 44 and the seeding bracket 41 is located in front of the first slider 42. The middle of the sixth connecting rod 44 is connected to the frame through a limit slider 45: the limit slider 45 is fixed on the frame, and the sixth connecting rod 44 is slidably arranged in the limit slider 45.

[0085] The sixth connecting rod 44 is connected to the tongue piece connecting plate 40 through a differential connecting rod 46. The differential connecting rod 46 is located between the tongue piece connecting plate 40 and the sixth connecting rod 44. The differential connecting rod 46 is hinged to the seeding bracket 41. In this embodiment, a support seat 47 is provided on the seeding bracket 41, and the differential connecting rod 46 is hinged to the support seat 47. The hinge point between the differential connecting rod 46 and the support seat 47 is the second hinge point. The distance between the front end of the differential connecting rod 46 and the second hinge point is greater than the distance between the rear end of the differential connecting rod and the second hinge point. By making the distances between the two ends of the differential connecting rod and the second hinge point different, the movement speeds of the two ends of the differential connecting rod are made different, and the movement speed of the front end of the differential connecting rod is 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. The lower end of the eighth link 48 is connected to the tongue plate 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 middle and lower part of the sixth link 44.

[0087] When the commutator works, the fifth link 43 connected to the second output shaft of the commutator makes a reciprocating swinging 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 make an insertion action downward.

[0088] The sixth link 44 and the insertion bracket 41 achieve a fixed angular change under the action of the limit slider 45. At this time, the angle between the sixth link 44 and the insertion bracket 41 becomes larger. The seventh link 49 pulls the differential link 46 under the action of the sixth link 44. The front end of the differential link 46 quickly presses down the eighth link 48, thereby driving the tongue plate connecting 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 time, the stroke of the tongue plate is longer than that of the duckbill, so as to eject the seeds in the duckbill. When the duckbill moves to the lowest position, the tongue plate presses the seeds in the duckbill into the soil, completing the process of sowing American ginseng seeds.

[0089] The linkage pressure plate mechanism includes a pull rope rod 52, a pull rope 53 and an insertion rod 54. The two sides of the sixth link 44 are fixedly connected through the pull rope rod 52. The linkage pressure plate 38 and the fixed pressure plate 37 are slidably connected through the insertion rod 54. The front end of the pull rope 53 is connected to the insertion rod 54, and the rear end of the pull rope 53 is connected to the pull rope rod 52. In this embodiment, in order to prevent the pulling direction of the pull rope from deviating, a pulley 55 is provided at the rear part 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 pulling direction of the pull rope is limited through the pulley.

[0090] During the downward movement of the tongue plate, the pull rope rod 52 pulls the pull rope 53 and pulls the linkage pressure plate 38 to move backward through the insertion rod 54. Under the action of the pulling force, the linkage pressure plate 38 and the fixed pressure plate 37 jointly squeeze the top of the duckbill, so that the bottom of the duckbill opens at a certain angle, facilitating the downward movement of the tongue plate and reducing the friction between the tongue plate and the duckbill. In the working process of the existing duckbill, the duckbill and the tongue plate cooperate with each other. In actual use, the downward punching force of the tongue plate is large and the duckbill is easily damaged. In this application, during the downward punching process of the tongue plate, under the action of the linkage pressure plate mechanism, the bottom of the duckbill can actively open at a certain angle so that the tongue plate can eject the seeds. The abrasion force of the tongue plate on the duckbill is reduced, and the service life of the duckbill is prolonged.

[0091] After the planting and sowing process is completed, the fifth connecting rod 43 makes a counterclockwise return swing, and at this time drives the sixth connecting rod 44 to move upward. At this time, the sixth connecting rod 44 drives the sowing bracket to lift the duckbill fixing plate and the duckbill upward. At the same time, the angle between the sixth connecting rod 44 and the sowing bracket 41 becomes smaller, and the sixth connecting rod 44 drives the seventh connecting rod 49 to press the differential connecting rod 46 downward. At this time, the differential connecting rod 46 drives the eighth connecting rod 48 and the tongue connecting plate 40 to move upward quickly, and the tongue is quickly recovered into the duckbill. At this time, the tension acting on the pull rope 53 disappears, and the clamping force acting on the top of the duckbill disappears. At this time, the upper part of the duckbill automatically resets under the elastic force of its own spring. At this time, the linkage pressure plate 38 automatically resets at the same time, and the bottom of the duckbill automatically closes, effectively preventing soil from flowing back and preventing the soil from pressing the seeds into the duckbill.

[0092] During the return movement of the connecting rod planting mechanism, the one-way ratchet mechanism completes a rotation under the linkage action, completing the seeding, and the seeds in the seeding box fall into the duckbill, preparing for the next seeding work.

[0093] The connecting rod planting mechanism is similar to a mantis arm, which can achieve nearly upright planting of the duckbill connected to it. The overlap of the trajectories of entering and exiting the soil is high, which reduces the disturbance of the soil during the planting process and is suitable for the sowing of densely planted plants including American ginseng.

[0094] Since there will be holes left after duckbill sowing, this application uses a hole-leveling mechanism to level the holes, otherwise it will affect seed development. Figure 3 As shown, the flat hole mechanism includes floating links 56 symmetrically arranged on both sides, a connecting shaft 57, and a plurality of rollers 58 arranged on the rollers, the front ends of the two floating links 56 are respectively hinged to the frame, and the rear ends of the two floating links 56 are connected by the connecting shaft 57. Since the floating links 56 are hinged to the frame, the floating links 56 can drive the buoys 58 to float on the soil.

[0095] A plurality of rollers 58 are rotatably provided on the connecting shaft 57. The rollers 58 are provided with soil turning needles 59 arranged in a rotational direction, and the soil turning needles 59 on two adjacent rollers are symmetrically arranged. As the rollers 58 rotate, the soil turning needles 59 distributed in opposite directions between the two adjacent rollers 58 can effectively offset the radial reaction force of the soil.

[0096] As the machine moves forward, the drum rotates and the rotationally arranged soil-turning needles realize leveling the hole. Through the connection between the floating connecting rod 56 and the float 58, the float 58 can always float above the soil, which greatly reduces the soil carried by the traditional leveling mechanism, reduces the disturbance of the sown seeds, and increases the seed germination survival rate.

[0097] The working principle of the American ginseng sowing device is as follows. During the rotation of the walking wheel, the entire device is driven to move forward. During the forward movement of the device, the diesel engine is working, and the power output by the diesel engine is decelerated by the reducer and then transmitted to the commutators on both sides through the transmission mechanism. At the same time, the commutators on both sides simultaneously drive the connecting rod insertion mechanism through the second output shaft. While the connecting rod insertion mechanism drives the duckbill to move downward, it can also drive the tongue to move downward quickly. When the duckbill moves to the lowest point, the tongue will open the bottom of the duckbill, allowing the seeds in the duckbill to fall into the soil.

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

[0099] During the return movement of the connecting rod insertion mechanism driven by the commutator, the duckbill moves upward, and the tongue moves upward quickly. The pulling force acting on the linkage pressure plate disappears, and the squeezing force acting on the upper part of the duckbill disappears, the upper part of the duckbill automatically resets, and the bottom of the duckbill is closed.

[0100] At the same time, the commutators on both sides simultaneously drive the one-way ratchet mechanism through the first output shaft, and drive the seeding shaft of the seeding device group to rotate through the single-row ratchet mechanism. With the one-time intermittent movement of the seeding shaft, a seeding process is realized, and the seeds in the seeding device are discharged into the duck's bill, waiting for the next seeding action.

[0101] The above is a detailed introduction to a precision seed drill provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed in this article.

Claims

1. A precise hill-drop planter, comprising a frame, characterized in that, A seed metering mechanism, a reversing mechanism, a power mechanism, and a flat hole structure are successively arranged on the frame 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 device group and a duckbill seed dropping part. The seed metering device group is drivingly connected to the reversing mechanism through a one-way ratchet mechanism, and the duckbill seed dropping part is drivingly connected to the reversing mechanism through a connecting rod dibbling mechanism.

2. The precision hill-drop planter according to claim 1, characterized in that, The reversing mechanism includes two reversers, and the two reversers are symmetrically arranged with respect to the moving direction of the machine; The input shaft of the reverser is connected to the output end of the power mechanism through a transmission mechanism. The first output end of the reverser is connected to the seed metering device group through a one-way ratchet mechanism, and the second output end of the reverser is drivingly connected to the duckbill seed dropping part through a connecting rod dibbling mechanism.

3. The precision dibbler according to claim 2, wherein The transmission mechanism includes: A connecting rod group, including a ninth connecting rod, a tenth connecting rod, and an eleventh connecting rod. One end of the ninth connecting rod is drivingly connected to the power mechanism. The other end of the ninth connecting rod is hinged to one end of the tenth connecting rod. The other end of the tenth connecting rod is hinged to one end of the eleventh connecting rod. The other end of the eleventh connecting rod is connected to the rotating shaft; The rotating shaft is rotatably connected to the frame and is located at the middle position between the two reversers; The first swing rod, the middle position of which is fixedly connected to the front end of the rotating shaft. One end of the first swing rod is connected to one side of the reverser through a first connecting rod, and the other end of the first swing rod is connected to the other side of the reverser through a second connecting rod.

4. A precise hill-drop planter according to claim 1, wherein, The seed metering device group includes several seed metering devices, which are arranged at intervals along the direction perpendicular to the movement direction of the seed metering device. A spring hose is connected to the bottom of the seed metering device; Several seed metering devices are connected through a seed metering shaft running through. An indentation wheel is fixed on the outside of the seed metering shaft located in the seed metering box. Several seed dropping holes are arranged at intervals on the outer surface of the indentation wheel. Seed introduction rows are respectively arranged on the two symmetric outer sides of the seed dropping holes. The seed introduction rows are inclined towards the seed dropping holes. The seed introduction rows include several disturbance bumps arranged at intervals; The two inner wall surfaces of the symmetrically arranged double-stage slot holes include an inclined surface and a vertical surface. One side of the slot hole facing the opening is an inclined surface, and one side of the slot hole facing the bottom of the slot is a vertical surface.

5. The precision hill-drop planter according to claim 4, characterized in that, The duckbill seed dropping part includes several duckbills, which are in one-to-one correspondence with the seed metering devices above them. The seeds in the seed metering devices fall into the duckbills through the spring hoses. A tongue piece is arranged in the duckbills; A linkage pressing plate is arranged in front of the upper part of the duckbill, and a fixed pressing plate is arranged behind the upper part of the duckbill. The linkage pressing plate and the fixed pressing plate are slidably connected. Through a linkage pressing plate mechanism, the distance between the linkage pressing plate and the fixed pressing plate is adjusted. The fixed pressing plate is connected to the connecting rod dibbling mechanism; The top end of the tongue piece is fixed on the tongue piece connecting plate. The tongue piece connecting plate is located above the fixed pressing plate. The tongue piece connecting plate and the fixed pressing plate are slidably connected. The tongue piece connecting plate is connected to the connecting rod dibbling mechanism.

6. The precision hill-drop drill according to claim 4, characterized in that, The one-way ratchet mechanism includes: One-way ratchets. One-way ratchets are respectively fixed at both ends of the seed metering shaft. One side tooth surface of the ratchet teeth of the one-way ratchet is an inclined tooth surface, and a reverse stop column is fixed on the outer circumferential surface of the ratchet teeth; One-way paddles, which are in contact with the inclined tooth surfaces of the one-way ratchets. The reverse stop columns are in contact with the one-way paddles. The one-way paddles are wound around the fourth connecting rod, and a return spring is connected between the one-way paddles and the fourth connecting rod; Clamping plates. The one-way paddles are located between the two clamping plates. One end of the clamping plate is hinged to the seed metering 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 drivingly connected to the reversing mechanism through the second swing rod.

7. The precision dibbler according to claim 5, characterized in that, The link inserting and sowing mechanism includes: Two symmetrically arranged inserting and sowing brackets, the front end of the inserting and sowing bracket is fixedly connected to the rear surface of the fixed pressing plate, the rear end of the inserting and sowing bracket is slidably connected to the frame, the inserting and sowing bracket is successively drivingly connected to the output end of the reversing mechanism through the sixth link and the fifth link, and the middle part of the sixth link is connected to the frame through a limiting slider; A differential link, rotatably connected to the frame, and the distance between the hinge point of the differential link and the frame and the front end of the differential link is greater than the distance between the hinge point and the rear end of the differential link, so that the movement speed of the front end of the differential link is greater than that of its rear end, and the rear end of the differential link is connected to the middle and lower part of the sixth link through the seventh link; An eighth link, its upper end is hinged to the front end of the differential link, and its lower end is connected to the tongue plate connecting plate.

8. The precision hill-drop planter according to claim 7, characterized in that, The linkage pressing plate mechanism includes: A pull rope rod, which is fixedly connected between the two sixth links; Inserting rods, the linkage pressing plate and the fixed pressing plate are slidably connected through the inserting rods, several inserting rods are fixedly arranged on the rear surface of the linkage pressing plate, through holes are provided on the corresponding fixed pressing plate, and the inserting rods are slidably arranged in the through holes; A pull rope, its front end is connected to the inserting rod, and its rear end is connected to the pull rope rod.

9. The precision hill-drop planter according to claim 1, wherein, The flat hole mechanism includes: Two symmetrically arranged floating links, the front ends of which are hinged to the frame, and the rear ends of the two floating links are fixedly connected through a connecting shaft; Drums, several drums are rotatably arranged on the connecting shaft, turning needles arranged in a spiral direction are provided on the drums, and the turning needles between adjacent two drums are symmetrically arranged.

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