Three-ridge seeder

Abstract

The utility model belongs to the technical field of agricultural instruments, particularly relates to a three-ridge seeder, and aims to solve the problems that a traditional three-ridge seeder can only be enlarged or reduced simultaneously by taking a middle ridge as a reference, and the distance between adjacent ridges cannot be independently adjusted; in order to solve the problems that in the prior art, when different types of seeds are sown at the same time, a single chain cannot effectively push soil at the high position, and the soil covering effect is poor, the following scheme is provided: the soil covering device comprises a connecting rack, a positioning rod, a main connecting piece, an auxiliary connecting piece, a spacing adjusting structure, a stepped soil covering structure and a driving structure. The two interval adjusting structures are arranged, so that the auxiliary movable connecting pieces on the two sides of the main connecting piece can be independently adjusted, the seed interval is correspondingly adjusted according to the types of different seeds, the chain is installed in a step shape, the contact area with soil is increased, it is ensured that the seeds in furrows are completely covered, and the soil covering effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a three-row seeder. Background Technology

[0002] Traditional crop sowing relies heavily on manual labor, which is labor-intensive and inefficient. Seeders are used to replace manual labor. The typical process of a seeder involves furrowing, sowing, covering with soil, and compaction. When sowing three different types of seeds, the spacing between adjacent seeds may differ. Traditional three-row seeders typically adjust the spacing using a single screw with both positive and negative threads. While this allows for spacing adjustment, it only increases or decreases the spacing of the middle row as a reference, not allowing independent adjustment of the spacing between adjacent rows. Furthermore, the stepped soil covering structure of traditional seeders often uses a single chain design, pushing some soil to cover the seeds. However, because the chain height is fixed, it cannot effectively push soil at higher levels, resulting in poor soil covering.

[0003] Based on this, a three-row seeder is proposed. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] This utility model provides a three-row seeder to solve the following problems.

[0006] 1. Traditional three-row seeders can only increase or decrease the size of the middle row at the same time, and cannot independently adjust the spacing between adjacent rows;

[0007] 2. A single chain cannot effectively move the soil at high altitudes, resulting in poor soil covering.

[0008] (II) Technical Content

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A three-row seeder includes a connecting frame, a positioning rod installed on the connecting frame, and a main connector provided on one side of the positioning rod;

[0011] Two spacing adjustment structures are installed on the connecting frame and located on both sides of the main connecting member. Each of the two spacing adjustment structures is equipped with an auxiliary connecting member. The following structure is snapped into one side of both the main connecting member and the auxiliary connecting member.

[0012] A stepped soil-covering structure is installed on the connecting frame and located on one side of the lower structure;

[0013] The drive structure, mounted on the connecting frame, is used to drive the seeding structure to perform seeding.

[0014] Furthermore, the main connector is provided with mating sleeves on both sides, and the spacing adjustment structure includes a threaded rod and a throttle. One end of the threaded rod is rotatably connected to the mating sleeve, and the other end is rotatably connected to the connecting frame. The throttle is fixedly connected to the end of the threaded rod away from the mating sleeve.

[0015] Furthermore, one side of the main connector is fixedly connected to the positioning rod, and the main connector has a first insertion port.

[0016] Two auxiliary connecting parts are threadedly connected to the corresponding threaded rods, and the same side of the two auxiliary connecting parts is slidably connected to the positioning rod. Each of the two auxiliary connecting parts is provided with a second socket, and a plow blade for trenching is inserted into both the first socket and the second socket.

[0017] Both the main connector and the auxiliary connector are equipped with U-shaped brackets on the same side.

[0018] Furthermore, two sets of rollers are rotatably connected to both sides of the connecting frame via shafts. The drive structure includes a docking shaft and a transmission belt. The docking shaft is rotatably connected to the connecting frame and is connected to one of the shafts via the transmission belt.

[0019] The next structure is installed on the docking shaft.

[0020] Furthermore, the seed structure includes a main side baffle and a secondary side baffle that engages with the main side baffle. After engagement, a seed storage cavity is formed between the main side baffle and the secondary side baffle. The tops of the main side baffle and the secondary side baffle together form a seed inlet and a seed outlet. The same outer grooved wheel seed metering disc is rotatably connected between the main side baffle and the secondary side baffle. The outer grooved wheel seed metering disc is located between the seed storage cavity and the seed outlet.

[0021] A sleeve is provided at the center of the outer groove wheel seed metering disc. The sleeve is polygonal, and a snap-fit ​​part adapted to the sleeve is provided on the mating shaft. The sleeve is fitted onto the snap-fit ​​part.

[0022] The tops of the main side baffle and the secondary side baffle are rotatably connected to the same cover plate, which is used to isolate the seed inlet from the outside.

[0023] Furthermore, a stop bar is detachably installed on the connecting frame. The main side baffle and the auxiliary side baffle are locked together and fixed by screws. One side of the main side baffle and the auxiliary side baffle are locked onto the corresponding brackets, and the other side slides in contact with the stop bar.

[0024] Both the main and secondary side panels are completely transparent.

[0025] Furthermore, the side of the positioning rod is provided with two sets of distance indication scales, which are located between the main connecting part and the auxiliary driving connecting part;

[0026] The plow blade has several insertion holes, and the main connector and the auxiliary connector are movably connected to a first limiting pin, and one of the insertion holes on the main connector and the auxiliary connector is connected to the corresponding first limiting pin.

[0027] Furthermore, the stepped soil covering structure consists of at least two chains, with multiple chain joints symmetrically arranged on the connecting frame, and the chain joints on the same side arranged in a stepped manner. The same chain is installed on two chain joints at the same height.

[0028] Furthermore, a handle is provided on one side of the connecting frame.

[0029] Furthermore, multiple docking holes are circumferentially opened on both sides of the connecting frame, and a second limit pin is movably inserted into the throttle, with the free end of the second limit pin inserted into one of the docking holes.

[0030] (III) Beneficial Effects

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] I. In this utility model, when different types of seeds are sown simultaneously, the auxiliary connecting parts on both sides of the main connecting part can be adjusted individually through the two spacing adjustment structures, thereby adjusting the seed spacing according to the different types of seeds.

[0033] Second, in this utility model, workers can precisely adjust the distance between the main connecting part and the auxiliary connecting part according to the distance indication scale.

[0034] Third, in this utility model, the installed chains are distributed in a stepped manner, which increases the contact area with the soil, ensures that the seeds in the furrows are fully covered, and improves the soil covering effect.

[0035] Fourth, in this utility model, by selecting different insertion holes and connecting them with the first limiting pin, the position of the plow blade can be quickly adjusted, thereby opening furrows of different depths according to different operational needs.

[0036] V. In this utility model, the sleeve is polygonal, and the docking shaft is provided with a snap-fit ​​part that is adapted to the sleeve. The sleeve is fitted on the snap-fit ​​part to provide multiple contact points so that the docking shaft can drive the outer groove wheel seed metering disc to rotate through the snap-fit ​​part and the sleeve.

[0037] VI. In this utility model, the main side baffle and the secondary side baffle are completely transparent to facilitate staff to observe the remaining seed quantity. Attached Figure Description

[0038] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;

[0039] Figure 2 This is a three-dimensional schematic diagram of the entire utility model from another perspective;

[0040] Figure 3 This is a schematic diagram of the main connecting member, the auxiliary driving connecting member, and the spacing adjustment structure in this utility model;

[0041] Figure 4 This is an exploded schematic diagram of the first insertion port and the plow blade in this utility model;

[0042] Figure 5 This is a schematic diagram of the connecting frame and drive structure in this utility model;

[0043] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle;

[0044] Figure 7 This is a partial cross-sectional view of the secondary side baffle in this utility model;

[0045] Figure 8 This is an exploded view of the main side baffle, the outer grooved wheel seed metering disc, and the auxiliary side baffle in this utility model;

[0046] Figure 9 This is an exploded view of the main side baffle, the outer grooved wheel seed metering disc, and the secondary side baffle from another perspective in this utility model.

[0047] In the diagram: 1. Connecting frame; 2. Positioning rod; 3. Main connecting part; 4. Auxiliary connecting part; 5. Docking sleeve; 6. Threaded rod; 7. Turning handle; 8. First insertion port; 9. Second insertion port; 10. Plow blade; 11. Card seat; 12. Shaft body; 13. Roller; 14. Docking shaft; 15. Transmission belt; 16. Main side baffle; 17. Auxiliary side baffle; 18. Seed inlet; 19. Seed discharge port; 20. External grooved wheel seed discharge disc; 21. Connecting sleeve; 22. Snap-fit ​​part; 23. Cover plate; 24. Stop bar; 25. Distance indicator scale; 26. Insertion hole; 27. First limit pin; 28. Chain; 29. ​​Locking connection port; 30. Handle; 31. Docking hole; 32. Second limit pin. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] Example 1

[0050] like Figures 1-9 As shown, a three-row seeder includes a connecting frame 1, a positioning rod 2 installed on the connecting frame 1, and a main connecting piece 3 provided on one side of the positioning rod 2;

[0051] The drive structure, mounted on the connecting frame 1, is as follows: Figure 5 As shown, two sets of rollers 13 are rotatably connected to both sides of the connecting frame 1 via shafts 12. The drive structure includes a docking shaft 14 and a transmission belt 15. The docking shaft 14 is rotatably connected to the connecting frame 1, and the docking shaft 14 is connected to one of the shafts 12 via the transmission belt 15.

[0052] The next structure is installed on the docking shaft 14.

[0053] Specifically: When the two sets of rollers 13 roll forward, the rollers 13 rotate clockwise, and the shaft 12 will also rotate synchronously and drive the docking shaft 14 to rotate in the same direction through the transmission belt 15, thereby driving the next structure to perform the next planting.

[0054] like Figures 1-4 As shown, the three-row seeder also includes two spacing adjustment structures, which are installed on the connecting frame 1 and located on both sides of the main connecting member 3. Each of the two spacing adjustment structures is equipped with an auxiliary connecting member 4. Specifically, the main connecting member 3 is provided with docking sleeves 5 on both sides. The spacing adjustment structure includes a threaded rod 6 and a throttle 7. One end of the threaded rod 6 is rotatably connected to the docking sleeve 5, and the other end is rotatably connected to the connecting frame 1. The throttle 7 is fixedly connected to the end of the threaded rod 6 away from the docking sleeve 5.

[0055] Furthermore, such as Figure 4 As shown, one side of the main connector 3 is fixedly connected to the positioning rod 2, and the main connector 3 is provided with a first insertion port 8;

[0056] Two auxiliary connecting parts 4 are threadedly connected to the corresponding threaded rods 6, and the same side of the two auxiliary connecting parts 4 is slidably connected to the positioning rod 2. Each of the two auxiliary connecting parts 4 is provided with a second insertion port 9, and a plow blade 10 for trenching is inserted into both the first insertion port 8 and the second insertion port 9.

[0057] Both the main connector 3 and the auxiliary connector 4 are provided with U-shaped brackets 11 on the same side.

[0058] Furthermore, such as Figure 4 As shown, the plow blade 10 has several insertion holes 26. The main connecting member 3 and the auxiliary connecting member 4 are movably connected with first limiting pins 27. One of the insertion holes 26 on the main connecting member 3 and the auxiliary connecting member 4 is connected to the corresponding first limiting pin 27. By selecting different insertion holes 26 to be connected to the first limiting pins 27, the position of the plow blade 10 can be quickly adjusted, so as to open furrows of different depths according to different work requirements.

[0059] like Figure 1 , Figure 2 , Figures 7-9 As shown, a seed-discharging structure is engaged on one side of both the main connecting member 3 and the auxiliary connecting member 4. Specifically, the seed-discharging structure includes a main side baffle 16 and an auxiliary side baffle 17 that engages with the main side baffle 16. After engagement, a seed storage cavity is formed between the main side baffle 16 and the auxiliary side baffle 17. The tops of the main side baffle 16 and the auxiliary side baffle 17 together form a seed inlet 18 and a seed outlet 19. The same outer grooved wheel seed-discharging disc 20 is rotatably connected between the main side baffle 16 and the auxiliary side baffle 17. The outer grooved wheel seed-discharging disc 20 is located in the seed storage cavity and... Between the seed outlets 19, the seeds in the seed storage chamber fall into the trough on the outer groove wheel seed metering disc 20. As the outer groove wheel seed metering disc 20 rotates, the seeds in the trough are discharged from the seed outlets 19. In order to ensure that the main side baffle 16 and the secondary side baffle 17 do not loosen or separate after they are engaged, the main side baffle 16 and the secondary side baffle 17 are fixed with screws after they are engaged. Later, the staff can also remove the screws and separate the main side baffle 16 and the secondary side baffle 17 to replace the outer groove wheel seed metering disc 20 with the appropriate model according to the type of seeds.

[0060] A sleeve 21 is provided at the axis of the outer grooved wheel seed metering disc 20, wherein the sleeve 21 is polygonal, such as... Figure 5 As shown, the docking shaft 14 is provided with a snap-fit ​​part 22 that is adapted to the sleeve 21. The sleeve 21 is fitted on the snap-fit ​​part 22 to provide multiple contact points so that the docking shaft 14 can drive the outer groove wheel seed metering disc 20 to rotate through the snap-fit ​​part 22 and the sleeve 21.

[0061] Combination Figure 1 and Figure 5 The top of the main side baffle 16 and the secondary side baffle 17 are rotatably connected to the same cover plate 23. The cover plate 23 is used to isolate the seed inlet 18 from the outside world, thereby preventing the seeds from leaking out of the seed inlet 18.

[0062] Furthermore, such as Figure 2 As shown, a stop bar 24 is detachably mounted on the connecting frame 1, wherein, combined with Figure 1 and Figure 2 After being engaged, one side of the main side baffle 16 and the secondary side baffle 17 are engaged on the corresponding bracket 11, and the other side slides in contact with the stop bar 24. The bracket 11 can limit one side of the engaged main side baffle 16 and the secondary side baffle 17, and the stop bar 24 can limit the other side.

[0063] Specifically: When making adjustments, rotate the handle 7, which drives the corresponding threaded rod 6 to rotate. Under the meshing action, the corresponding auxiliary connecting piece 4 moves on the threaded rod 6, thereby changing the distance between the auxiliary connecting piece 4 and the main connecting piece 3.

[0064] When the auxiliary connecting part 4 moves, it will drive the corresponding seeding structure and plow blade 10 to move through the card seat 11, thereby adjusting the two adjacent seeding structures and plow blades 10.

[0065] When different types of seeds are sown simultaneously, the auxiliary connecting parts 4 on both sides of the main connecting part 3 can be adjusted individually through the two spacing adjustment structures, so as to adjust the seed spacing according to the different types of seeds.

[0066] The main side baffle 16 and the secondary side baffle 17 are completely transparent to facilitate staff to observe the remaining seed quantity.

[0067] Furthermore, such as Figure 4 As shown, the side of the positioning rod 2 is provided with two sets of distance indication scales 25. The distance indication scales 25 are located between the main connector 3 and the auxiliary connector 4. The operator can accurately adjust the distance between the main connector 3 and the auxiliary connector 4 according to the indication of the distance indication scales 25.

[0068] Furthermore, such as Figure 3 and Figure 5 As shown, multiple docking holes 31 are provided on both sides of the connecting frame 1 in a circular pattern. A second limiting pin 32 is movably inserted into the throttle 7, and the free end of the second limiting pin 32 is inserted into one of the docking holes 31.

[0069] After adjustment, insert the free end of the second limit pin 32 on the throttle 7 into the corresponding mating hole 31 to fix the throttle 7 and prevent it from shifting.

[0070] The three-row seeder also includes a stepped soil covering structure, installed on the connecting frame 1 and located on one side of the seeding structure, specifically as follows: Figure 2 , Figure 5 and Figure 6 As shown, the stepped soil covering structure consists of at least two chains 28. Multiple locking ports 29 are symmetrically arranged on the connecting frame 1, and the locking ports 29 on the same side are arranged in a stepped manner. The same chain 28 is installed on two locking ports 29 at the same height. The installed chains 28 are distributed in a stepped manner, which increases the contact area with the soil, ensures that the seeds in the furrow are fully covered, and improves the soil covering effect.

[0071] Furthermore, such as Figure 2 As shown, a handle 30 is provided on one side of the connecting frame 1 to facilitate pushing by the staff.

[0072] In summary, the workflow of this utility model is as follows:

[0073] The seeds to be sown are placed into the corresponding sowing structure. After adjusting the distance between adjacent sowing structures and the height of the plow blade 10 according to the sowing needs, the connecting frame 1 is moved by pushing the handle 30. At this time, the two sets of rollers 13 roll forward. During the movement, the plow blade 10 will open a furrow in the land. When the two sets of rollers 13 roll forward, the rollers 13 rotate clockwise. At the same time, the shaft 12 will also rotate synchronously and drive the docking shaft 14 to rotate in the same direction through the transmission belt 15. The docking shaft 14 drives the outer grooved wheel seed metering disc 20 to rotate through the snap-fit ​​part 22 and the sleeve 21. The seeds in the seed storage chamber will fall into the groove on the outer grooved wheel seed metering disc 20. As the outer grooved wheel seed metering disc 20 rotates, the seeds in the groove will be discharged from the seed outlet 19. As the connecting frame 1 continues to move forward, the soil is pushed into the furrow by the chain 28 to cover the seeds. As the connecting frame 1 continues to move forward, the rollers 13 on the side near the handle 30 will compact the soil.

[0074] The different embodiments described above can be combined, substituted, or used in combination with each other.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0076] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-furrow seeder comprising a hitch frame (1), characterized in that: The connecting frame (1) is provided with a positioning rod (2), and one side of the positioning rod (2) is provided with a main connecting piece (3); Two spacing adjustment structures are installed on the connecting frame (1) and located on the two sides of the main connecting piece (3), and each of the two spacing adjustment structures is provided with a secondary moving connecting piece (4), and one side of the main connecting piece (3) and the secondary moving connecting piece (4) is clamped with the following structure; A stepped soil covering structure is installed on the connecting frame (1) and located on one side of the sowing structure; A driving structure is installed on the connecting frame (1) and used for driving the sowing structure to sow seeds.

2. The three furrow planter of claim 1, wherein: The two sides of the main connecting piece (3) are provided with a butt joint sleeve (5), the spacing adjustment structure comprises a threaded rod (6) and a handle (7), one end of the threaded rod (6) is rotatably connected with the butt joint sleeve (5), the other end is rotatably connected with the connecting frame (1), and the handle (7) is fixedly connected with the end of the threaded rod (6) away from the butt joint sleeve (5).

3. The three furrow planter of claim 2, wherein: One side of the main connecting piece (3) is fixedly connected with the positioning rod (2), and a first socket (8) is formed in the main connecting piece (3); The two secondary moving connecting pieces (4) are threadedly connected with the corresponding threaded rods (6), and the same side of the two secondary moving connecting pieces (4) is slidably connected with the positioning rod (2), a second socket (9) is formed in each of the two secondary moving connecting pieces (4), and a plough (10) for trenching is inserted into the first socket (8) and the second socket (9). The same side of the main connecting piece (3) and the secondary moving connecting piece (4) is provided with a U-shaped clamping seat (11).

4. The three furrow planter of claim 3, wherein: The two sides of the connecting frame (1) are rotatably connected with two groups of rollers (13) through shaft bodies (12), the driving structure comprises a butt joint shaft (14) and a transmission belt (15), the butt joint shaft (14) is rotatably connected with the connecting frame (1), and the butt joint shaft (14) is drivingly connected with one of the shaft bodies (12) through the transmission belt (15); The sowing structure is installed on the butt joint shaft (14).

5. The three furrow planter of claim 4, wherein: The sowing structure comprises a main side baffle (16) and a secondary side baffle (17) which is clamped with the main side baffle (16), a seed storage cavity is formed between the main side baffle (16) and the secondary side baffle (17) after clamping, the top of the main side baffle (16) and the top of the secondary side baffle (17) together form a seed inlet (18) and a seed outlet (19), the same outer groove wheel type seed plate (20) is rotatably connected between the main side baffle (16) and the secondary side baffle (17), and the outer groove wheel type seed plate (20) is located between the seed storage cavity and the seed outlet (19); A sleeve cylinder (21) is arranged at the shaft center of the outer groove wheel type seed plate (20), the sleeve cylinder (21) is polygonal, the butt joint shaft (14) is provided with a clamping part (22) matched with the sleeve cylinder (21), and the sleeve cylinder (21) is sleeved on the clamping part (22). The same cover plate (23) is rotatably connected to the top of the main side baffle (16) and the secondary side baffle (17), and the cover plate (23) is used for isolating the seed inlet (18) from the outside.

6. The three furrow planter of claim 5, wherein: The connecting frame (1) is detachably provided with a blocking rod (24), wherein the main side blocking plate (16) and the auxiliary side blocking plate (17) are fixedly connected through screws after being clamped, and one side of the main side blocking plate (16) and the auxiliary side blocking plate (17) is clamped on the corresponding clamping seat (11), and the other side is in sliding contact with the blocking rod (24). The main side blocking plate (16) and the auxiliary side blocking plate (17) are transparent.

7. The three furrow planter of claim 3, wherein: Two groups of distance prompt scales (25) are arranged on the side of the positioning rod (2), and the distance prompt scales (25) are located between the main connecting piece (3) and the auxiliary connecting piece (4). A plurality of insertion holes (26) are formed in the plough (10), the first limiting pin (27) is movably inserted in the main connecting piece (3) and the auxiliary connecting piece (4), and one of the insertion holes (26) in the main connecting piece (3) and the auxiliary connecting piece (4) is inserted with the corresponding first limiting pin (27).

8. The three furrow planter of claim 1, wherein: The stepped soil covering structure is composed of at least two chains (28), a plurality of chain linkages (29) are symmetrically arranged on the connecting frame (1), and the chain linkages (29) on the same side are arranged in a stepped manner, and the two chain linkages (29) at the same height are provided with the same chain (28).

9. The three furrow planter of claim 1, wherein: A handle (30) is arranged on one side of the connecting frame (1).

10. The three furrow planter of claim 2, wherein: A plurality of butt joints (31) are circumferentially formed on both sides of the connecting frame (1), the second limiting pin (32) is movably inserted in the rotating handle (7), and the free end of the second limiting pin (32) is inserted in one of the butt joints (31).

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