Soybean double-seedling-zone precision seeding monomer and seeding machine

Abstract

The utility model relates to a soybean double-seedling belt precision seeding unit and a seeder, the seeding unit comprises a unit frame, a seeding disc, a seed sowing device and a press wheel, the seeding disc is arranged on the unit frame and is used for single-row ditching or double-row ditching; the seed-metering device is mounted on the single-body frame, is positioned above the seeding disc and is used for performing single-row or double-row seeding in a groove formed in the seeding disc; and the press wheel is mounted on the single body frame, is positioned on the rear side of the seeding disc and is used for covering soil on the sown groove. The air-suction type double-seedling-belt seeding monomer has the beneficial effects that the structure is simple, the design is reasonable, two planting modes of corn single-row planting and soybean double-row planting are realized by replacing parts, so that the purchase cost of a machine is reduced, the use efficiency of the machine is improved, and the defect that the conventional monomer cannot meet the requirements of two planting agriculture at the same time is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of seed drills, in particular to a soybean double-seedling belt precision seeding unit and a seed drill. Background Art

[0002] At present, soybeans are planted densely in a double seedling belt mode, and corn is planted in a single row. When planting corn and soybeans, the sowing unit often needs to switch units to achieve different planting methods for the two crops. It is impossible for one unit to be compatible with both planting methods, and the components of each module cannot be interchangeable, which increases the user's purchase cost and increases the user's investment in farming. Utility Model Content

[0003] The utility model provides a soybean double-seedling belt precision sowing unit and a sowing machine, aiming to solve the problems in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A soybean double-seedling belt precision sowing unit comprises a unit frame, a sowing disc, a seeding device and a pressing wheel. The sowing disc is mounted on the unit frame and is used for single-row furrowing or double-row furrowing; the seeding device is mounted on the unit frame and is located above the sowing disc and is used for single-row or double-row sowing in the grooves opened by the sowing disc; the pressing wheel is mounted on the unit frame and is located at the rear side of the sowing disc and is used for covering the grooves after sowing.

[0006] The beneficial effect of the utility model is that during the operation, the above-mentioned sowing unit is assembled on the seeder. When the seeder moves on the cultivated land, the sowing disc opens single or double rows of grooves on the cultivated land, the seeding device arranges the seeds in sequence and plants them in the grooves at even intervals, and then the grooves are covered with soil using the pressing wheel to complete the sowing operation, which is convenient and efficient.

[0007] The utility model has a simple structure and a reasonable design, and provides an air-suction double-seedling belt sowing unit. By replacing parts, two planting modes, single-row corn and double-row soybean, can be realized, thereby reducing the machine purchase cost, improving the machine use efficiency, and overcoming the deficiency that the existing units cannot meet the two planting agronomic requirements at the same time.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the sowing disc includes a seed furrow smoother and two disc bodies, the two disc bodies are mounted on the single frame for relative rotation and are used for opening furrows; the seed furrow smoother is fixedly mounted on the single frame and is located between the two disc bodies and is used for smoothing the bottom of the opened furrow.

[0010] The beneficial effect of adopting the above further scheme is that during the operation, two discs are used to open grooves on the cultivated land, and the bottom of the groove is smoothed by a seed groove smoother to facilitate subsequent seeding.

[0011] Furthermore, the seed meter includes an outer shell, a single-row hole seed disk and a single-row seed guide tube. The outer shell is fixedly mounted on the single frame, and a seed inlet and a seed outlet are provided on the top and bottom of the outer shell respectively; the single-row hole seed disk is rotatably mounted in the outer shell, the upper end of the single-row seed guide tube is connected to the seed outlet, and the lower end extends to the top between the two disc bodies.

[0012] The beneficial effect of adopting the above further scheme is that during the operation, the seeds are sorted using a single-row hole seed tray, and the sorted seeds are planted in the groove in sequence using a single-row seed guide tube, which makes planting convenient, realizes single-row planting, and is highly efficient.

[0013] Furthermore, the suppressing wheel includes a suppressing wheel bracket, a spring mounting plate, a spring and a pair of wheel bodies; the suppressing wheel bracket is rotatably mounted on the single frame, on which a spring handle is rotatably mounted, and the pair of wheel bodies are relatively rotatably mounted on the suppressing wheel bracket; the spring mounting plate is fixedly mounted on the single frame, one end of the spring is mounted on the spring mounting plate, and the other end is mounted on the lower end of the spring handle.

[0014] The beneficial effect of adopting the above further solution is that during the operation, the pair of wheels are used to cover the soil on both sides of the groove into the groove to complete the sowing;

[0015] In addition, the spring handle is manually operated to adjust the elastic force of the spring, thereby adjusting the force applied by the pair of wheel bodies to the cultivated land, which is easy to operate and saves time and effort.

[0016] Furthermore, the sowing disc includes two disc bodies, two disc furrowing knives and two guard plates. The two disc furrowing knives are relatively fixedly installed on the single frame, and the two guard plates are relatively fixedly installed at the rear ends of the two disc furrowing knives; the two disc bodies are relatively rotatably installed on the side of the two disc furrowing knives away from each other for furrowing.

[0017] The beneficial effect of adopting the above further scheme is that during the operation, two disc bodies are used to open grooves on the cultivated land, and two disc groove cutters are used to smooth the bottom of the grooves, which is convenient for subsequent planting;

[0018] In addition, two disc grooving knives are used to protect the two guard plates, thereby extending the service life of the two guard plates.

[0019] Furthermore, the seed meter includes an outer shell, a double-row hole seed disk, a seed separation plate and a double-row seed guide tube, the outer shell is fixedly mounted on the single frame, and a seed inlet and a seed outlet are respectively provided at the top and bottom thereof, and the double-row hole seed disk is rotatably mounted in the outer shell; the seed separation plate is fixedly mounted at the seed outlet, and it divides the seed outlet into two outlets; the upper end of the double-row seed guide tube is fixedly connected to the seed separation plate, and the lower end extends to the upper part between the two disc bodies; the double-row seed guide tube is in an inverted Y shape, and two seed placement channels which are independent of each other and connected to the two sides of its lower end are respectively provided in the upper part, and the two sides of the lower end of the double-row seed guide tube are respectively connected to the two outlets; the cross-sections of the two guard plates are respectively U-shaped, and the two sides of the lower end of the double-row seed guide tube pass through the two guard plates respectively.

[0020] The beneficial effect of adopting the above further scheme is that during the operation, the seeds are sorted using a double-row hole seed tray, and the sorted seeds are planted in the groove in sequence using a double-row seed guide tube, which is convenient for planting and realizes double-row planting with high efficiency.

[0021] In addition, two guard plates are used to protect the double-row seed guide tubes.

[0022] Furthermore, the suppressing wheel includes a spring mounting plate, a pair of suppressing wheel brackets, a pair of springs and two pairs of wheel bodies. The pair of suppressing wheel brackets are relatively rotatably installed on the single frame, and spring handles are respectively rotatably mounted thereon. The two pairs of wheel bodies are respectively rotatably installed on the pair of suppressing wheel brackets; the spring mounting plate is fixedly installed on the single frame, one end of the pair of springs is respectively mounted on the spring mounting plate, and the other end is respectively mounted on the lower ends of the two spring handles.

[0023] The beneficial effect of adopting the above further scheme is that during the operation, the soil on both sides of the two grooves is covered in the grooves by using two pairs of wheel bodies to complete the sowing;

[0024] In addition, the spring handle is manually operated to adjust the elastic force of the spring, thereby adjusting the force applied by the two pairs of wheel bodies to the cultivated land. The operation is simple, time-saving and labor-saving.

[0025] Furthermore, it also includes a depth limiting wheel, which is installed on the single frame and is located on one side of the sowing disc.

[0026] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and using the depth limiting wheel to limit the depth of the sowing disc to avoid the groove being opened too deep to affect seed germination.

[0027] Furthermore, it also includes a soil leveling plate and a seed box. The soil leveling plate is fixedly mounted on the single frame and is located on the front side of the sowing disc; the seed box is fixedly mounted on the single frame and is located above the seed meter, and a seed discharge port for delivering seeds to the seed meter is provided at the bottom.

[0028] The beneficial effect of adopting the above further scheme is that during the operation, the surface of the cultivated land is smoothed by using the leveling plate, and at the same time, the oversized stones on the surface of the cultivated land are cleaned up to ensure the quality of sowing;

[0029] In addition, the seed box is used to store the seeds to be sown, so as to facilitate the sowing operation, which is highly efficient.

[0030] The utility model also relates to a seeder, comprising the soybean double-seedling belt precision sowing unit as described above.

[0031] The beneficial effect of adopting the above-mentioned further scheme is that the utility model also provides a seeder with a simple structure and reasonable design. It provides an air-suction double-seedling belt sowing unit, which can realize two planting modes of single-row corn and double-row soybeans by replacing parts, thereby reducing the purchase cost of the machine, improving the efficiency of machine use, and overcoming the deficiency that the existing units cannot meet two planting agronomic requirements at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 This is one of the structural schematic diagrams of a single-row seeding disc in the utility model;

[0034] Figure 3 This is the second structural schematic diagram of a single-row seeding disc in the utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the double-row seeding disc in the utility model;

[0036] Figure 5 It is a structural schematic diagram of a single-row seed meter in the utility model;

[0037] Figure 6 It is a structural schematic diagram of a double-row seeding device in the utility model;

[0038] Figure 7 This is a schematic diagram of the internal structure of the double-row seeding device in the utility model;

[0039] Figure 8 This is a schematic diagram of the structure of the seed tray and the shell of the seed metering device of the utility model;

[0040] Fig. 9 It is a schematic diagram of the overall structure of a single-row pressing wheel in the utility model;

[0041] Fig.10 It is a partial structural schematic diagram of a single-row pressing wheel in the utility model;

[0042] Fig.11 It is a schematic diagram of the overall structure of the double-row pressing wheels in the utility model;

[0043] Fig.12 It is a partial structural schematic diagram of the double-row pressing wheel in the utility model;

[0044] Fig.13 It is a schematic diagram of the transfer of the depth limiting wheel in the utility model;

[0045] Fig.14 It is a partially exploded schematic diagram of the depth limiting wheel in the utility model.

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 1. Single four-link; 2. Single transmission assembly; 3. Soil leveling plate; 4. Seeding disc; 41. Disc body; 5. Depth-limiting wheel; 6. Suppression wheel; 7. Single frame; 8. Seeder; 9. Seed box; 10. Disc furrowing knife; 11. Guard plate; 12. Seed furrow smoother; 13. Seeder bottom shell; 14. Seed disc; 15. Seeder front shell; 16. Single-row hole seed disc; 17. Single-row seed guide tube; 18. Double-row hole seed disc; 19. Seed separation plate; 20. Double-row seed guide tube; 21. Depth-limiting wheel body; 22. Depth-limiting wheel adjusting bolt; 23. Adjustment sleeve; 24. Depth-limiting wheel support arm; 25. Depth-limiting wheel mounting seat; 26. Mud scraper; 27. Spring mounting plate; 28. Spring; 29. ​​Suppression wheel bracket; 30. Spring handle; 31. Wheel body. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0049] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0051] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0052] Example 1

[0053] like Figures 1 to 14 As shown, this embodiment provides a soybean double-seedling belt precision sowing unit, including a unit frame 7, a sowing disc 4, a seeding device 8 and a pressing wheel 6. The sowing disc 4 is installed on the unit frame 7 for single-row furrowing or double-row furrowing; the seeding device 8 is installed on the unit frame 7, which is located above the sowing disc 4, and is used for single-row or double-row sowing in the groove opened by the sowing disc 4; the pressing wheel 6 is installed on the unit frame 7, which is located on the rear side of the sowing disc 4, and is used for covering the groove after sowing.

[0054] During the operation, the above-mentioned sowing unit is assembled on the seeder. When the seeder moves on the cultivated land, the sowing disc 4 opens single or double rows of grooves on the cultivated land, the seeding device 8 arranges the seeds in sequence and sows them in the grooves at even intervals, and then the pressing wheel 6 is used to cover the above-mentioned grooves with soil to complete the sowing operation. The operation is convenient and efficient.

[0055] Based on the above scheme, two pairs of monomer four-link rods 1 are connected to the two sides of the front end of the above-mentioned monomer frame 7 for relative rotation up and down, and one end of the two pairs of monomer four-link rods 1 is rotatably connected to a fixed plate, which is used to connect the sowing frame, and the sowing frame is used to assemble fertilization components, etc.

[0056] In addition, a single body transmission assembly 2 is installed on the fixed plate, and the single body transmission assembly 2 is connected to the gear transmission fixedly sleeved on the central axis of the seed metering device 8 through a chain, so as to drive the seed disc 14 in the seed metering device 8 to rotate.

[0057] It should be noted that the above-mentioned single transmission assembly 2 adopts the existing technology, and its specific structure and principle are not described in detail here.

[0058] This embodiment has a simple structure and a reasonable design, and provides an air-suction double-seedling belt sowing unit. By replacing parts, two planting modes, single-row corn and double-row soybean, can be realized, thereby reducing the purchase cost of the machine, improving the efficiency of machine use, and overcoming the deficiency that the existing units cannot meet two planting agronomic requirements at the same time.

[0059] The purpose of this embodiment is to overcome the deficiency that the existing monomers cannot meet two planting agronomic requirements at the same time, and to provide an air-suction double-seedling belt sowing monomer, which can realize two planting modes, single-row corn and double-row soybean, by replacing parts, thereby reducing the purchase cost and improving the efficiency of machine use.

[0060] Example 2

[0061] On the basis of Example 1, in this embodiment, the sowing disc 4 includes a seed furrow smoother 12 and two disc bodies 41, and the two disc bodies 41 are relatively rotatably mounted on the single frame 7 for opening furrows; the seed furrow smoother 12 is fixedly mounted on the single frame 7, and is located between the two disc bodies 41, and is used to smooth the bottom of the opened furrow.

[0062] During the operation, two discs 41 are used to open furrows on the cultivated land, and the furrow smoother 12 is used to smooth the bottom of the furrow to facilitate subsequent sowing.

[0063] Example 3

[0064] On the basis of Example 2, in this embodiment, the seed meter 8 includes an outer shell, a single-row hole seed disk 16 and a single-row seed guide tube 17. The outer shell is fixedly mounted on the single frame 7, and a seed inlet and a seed outlet are provided on the top and bottom thereof respectively; the single-row hole seed disk 16 is rotatably mounted in the outer shell, the upper end of the single-row seed guide tube 17 is connected to the seed outlet, and the lower end extends to the top between the two disc bodies 41.

[0065] During the operation, the seeds are sorted using the single-row hole seed tray 16, and the sorted seeds are planted in the groove in sequence using the single-row seed guide tube 17, which makes planting easy and achieves single-row planting with high efficiency.

[0066] Preferably, in this embodiment, the housing comprises a bottom shell 13 of the seed meter and a front shell 15 of the seed meter. The bottom shell 13 of the seed meter is fixed on the single frame 7, and the front shell 15 of the seed meter is snapped on the bottom shell 13 of the seed meter, which is convenient for disassembly and assembly, saving time and effort.

[0067] In addition, the seed inlet and seed outlet are respectively distributed on the top and bottom of the bottom shell 13 of the seed metering device.

[0068] Preferably, in this embodiment, the single-row seed guide tube 17 is preferably a tubular structure with a thick upper end and a thin lower end, and the lower end thereof extends to the upper part between the two disc bodies 41 .

[0069] It should be noted that the above-mentioned single-row hole seed plate 16 adopts the existing technology, and its specific structure and principle are not described in detail here.

[0070] Example 4

[0071] On the basis of any one of Examples 2 to 3, in this embodiment, the suppressing wheel 6 includes a suppressing wheel bracket 29, a spring mounting plate 27, a spring 28 and a pair of wheel bodies 31; the suppressing wheel bracket 29 is rotatably mounted on the single frame 7, on which a spring handle 30 is rotatably mounted, and the pair of wheel bodies 31 are relatively rotatably mounted on the suppressing wheel bracket 29; the spring mounting plate 27 is fixedly mounted on the single frame 7, one end of the spring 28 is mounted on the spring mounting plate 27, and the other end is mounted on the lower end of the spring handle 30.

[0072] During the operation, the pair of wheels 31 are used to cover the soil on both sides of the groove into the groove to complete the sowing;

[0073] In addition, the spring handle 30 is manually operated to adjust the elastic force of the spring 28, thereby adjusting the force applied by the pair of wheel bodies 31 to the cultivated land, which is easy to operate and saves time and effort.

[0074] Preferably, in this embodiment, the suppressing wheel bracket 29 is preferably an L-shaped frame, one end of the L-shaped frame is rotatably connected to the single frame 7, and the pair of wheels 31 is rotatably installed on the other end of the L-shaped frame.

[0075] Preferably, in this embodiment, the above-mentioned pressing wheel bracket 29 is provided with a slide groove penetrating from top to bottom, and positioning slots are provided at intervals on both sides of the slide groove; the spring handle 30 penetrates the above-mentioned slide groove, and its lower end is rotatably connected with the pressing wheel bracket 29, and the other end of the spring 28 is hooked with the middle of the spring handle 30. When adjusting, the spring handle 30 can be manually rotated to the set positioning slot and stuck in the corresponding positioning slot to adjust the elastic force of the spring 28, thereby adjusting the pressure of the pair of wheel bodies 31 on the cultivated land.

[0076] It should be noted that the spring handle 30 of each of the above-mentioned suppressing wheel brackets 29 can be set to one or two. In this case, the corresponding ends of the spring 28 are respectively connected to the two spring handles 30, and the two spring handles 30 are operated synchronously during operation.

[0077] Example 5

[0078] On the basis of Example 1, in this embodiment, the sowing disc 4 includes two disc bodies 41, two disc furrowing knives 10 and two guard plates 11. The two disc furrowing knives 10 are relatively fixedly installed on the single frame 7, and the two guard plates 11 are relatively fixedly installed at the rear ends of the two disc furrowing knives 10; the two disc bodies 41 are relatively rotatably installed on the side of the two disc furrowing knives 10 away from each other for furrowing.

[0079] During the operation, two disc bodies 41 are used to make grooves on the cultivated land, and two disc groove cutters 10 are used to smooth the bottom of the grooves to facilitate subsequent planting.

[0080] In addition, two disc grooving knives 10 are used to protect the two guard plates 11, thereby extending the service life of the two guard plates 11.

[0081] The above-mentioned embodiment 2 is a single-row sowing structure, while the embodiment 5 is a double-row sowing structure, so the above-mentioned embodiment 2 and embodiment 5 are two different sowing operations.

[0082] This embodiment can meet different sowing needs through the combination of the seed plate and the seed guide tube of the seeder, without the need to replace the double-row seeder, thereby reducing production costs. At the same time, the use of an air suction seeder can improve sowing accuracy and reduce seed damage. It can complete the sowing operations of multiple crops such as corn and soybeans and meet the operational needs of different crops.

[0083] Example 6

[0084] On the basis of Example 5, in this embodiment, the seed metering device 8 includes an outer shell, a double-row hole seed disc 18, a seed separation plate 19 and a double-row seed guide tube 20, the outer shell is fixedly mounted on the single frame 7, and a seed inlet and a seed outlet are respectively provided at the top and bottom thereof, and the double-row hole seed disc 18 is rotatably mounted in the outer shell; the seed separation plate 19 is fixedly mounted at the seed outlet, which divides the seed outlet into two outlets; the upper end of the double-row seed guide tube 20 is fixedly connected to the seed separation plate 19, and the lower end extends to the upper part between the two disc bodies 41; the double-row seed guide tube 20 is in an inverted Y shape, and two seed placement channels which are independent of each other and connected to the two sides of its lower end are provided in its upper part, and the two sides of the lower end of the double-row seed guide tube 20 are respectively connected to the two outlets; the cross-sections of the two guard plates 11 are respectively U-shaped, and the two sides of the lower end of the double-row seed guide tube 20 pass through the two guard plates 11 respectively.

[0085] Preferably, in the present embodiment, the two guard plates 11 are preferably plates with U-shaped cross-sections, which extend along the length directions of the two disc trenching knives 10 and are located on the corresponding ends of the two disc trenching knives 10 .

[0086] During the operation, the seeds are sorted using the double-row hole seed tray 18, and the sorted seeds are planted in the grooves in sequence using the double-row seed guide tube 20, which is convenient for planting and realizes double-row planting with high efficiency.

[0087] In addition, the two guard plates 11 are used to protect the double-row seed guide pipes 20 .

[0088] Based on the above solution, the seed outlet is divided into two independent outlets by the seed separation plates 19 .

[0089] It should be noted that the double-row hole seed plate 18 adopts the existing technology, and its specific structure and principle will not be described in detail here.

[0090] In addition, the seed tray 14 is a single-row hole seed tray 16 or a double-row hole seed tray 18 .

[0091] Example 7

[0092] On the basis of any one of Examples 5 to 6, in this embodiment, the suppressing wheel 6 includes a spring mounting plate 27, a pair of suppressing wheel brackets 29, a pair of springs 28 and two pairs of wheel bodies 31; the pair of suppressing wheel brackets 29 are relatively rotatably mounted on the single frame 7, on which spring handles 30 are respectively rotatably mounted, and the two pairs of wheel bodies 31 are respectively rotatably mounted on the pair of suppressing wheel brackets 29; the spring mounting plate 27 is fixedly mounted on the single frame 7, one end of the pair of springs 28 is respectively mounted on the spring mounting plate 27, and the other end is respectively mounted on the lower ends of the two spring handles 30.

[0093] During the operation, the two pairs of wheels 31 are used to cover the soil on both sides of the two grooves into the grooves to complete the sowing;

[0094] In addition, the spring handle 30 is manually operated to adjust the elastic force of the spring 28, thereby adjusting the force applied by the two pairs of wheel bodies 31 to the cultivated land, which is easy to operate and saves time and effort.

[0095] Preferably, in this embodiment, each of the above-mentioned suppressing wheel brackets 29 is preferably an L-shaped frame, one end of the L-shaped frame is rotatably connected to the single frame 7, and the pair of wheels 31 is rotatably installed on the other end of the L-shaped frame.

[0096] Preferably, in this embodiment, each of the above-mentioned pressing wheel brackets 29 is provided with a slide groove penetrating from top to bottom, and positioning slots are provided at intervals on both sides of the slide groove; the spring handle 30 penetrates the above-mentioned slide groove, and its lower end is rotatably connected to the pressing wheel bracket 29, and the other end of the spring 28 is hooked to the middle of the spring handle 30. When adjusting, the spring handle 30 can be manually rotated to the set positioning slot and stuck in the corresponding positioning slot to adjust the elastic force of the spring 28, thereby adjusting the pressure of the pair of wheel bodies 31 on the cultivated land.

[0097] Example 8

[0098] On the basis of the above embodiments, this embodiment further includes a depth limiting wheel 5 , which is installed on the single frame 7 and is located at one side of the sowing disc 4 .

[0099] The solution has a simple structure and a reasonable design. The depth limiting wheel 5 is used to limit the depth of the sowing disc 4 to prevent the groove from being opened too deep and affecting the germination of seeds.

[0100] Preferably, in this embodiment, the depth limiting wheel 5 comprises a depth limiting wheel mounting seat 25 and a pair of depth limiting wheel bodies 21, and adjustment sleeves 23 are fixedly connected to both ends of the depth limiting wheel mounting seat 25, and the two adjustment sleeves 23 are respectively threadedly connected to the depth limiting wheel adjusting bolts 22, and the two depth limiting wheel adjusting bolts 22 are respectively threadedly sleeved with assembly sets, and the two assembly sets are respectively fixedly connected to one end of the two depth limiting wheel support arms 24, and the pair of depth limiting wheel bodies 21 are relatively rotatably installed at the other ends of the two depth limiting wheel support arms 24.

[0101] In addition, the two assembly sets are relatively fixedly connected with scraper plates 26 , one end of the two scraper plates 26 is respectively close to the two depth limiting wheel bodies 21 , and is used to scrape away the mud on the two depth limiting wheel bodies 21 .

[0102] Based on the above solution, the distance between the two depth limiting wheel bodies 21 can be adjusted by using the two depth limiting wheel adjusting bolts 22 .

[0103] Example 9

[0104] On the basis of the above embodiments, the present embodiment also includes a soil leveling plate 3 and a seed box 9. The soil leveling plate 3 is fixedly mounted on the single frame 7, and is located on the front side of the sowing disc 4. The seed box 9 is fixedly mounted on the single frame 7, and is located above the seed meter 8, and a seed discharge port is provided at the bottom thereof for delivering seeds to the seed meter 8.

[0105] During the operation, the surface of the cultivated land is smoothed by using the soil leveling plate 3, and at the same time, the oversized stones on the surface of the cultivated land are cleaned to ensure the quality of sowing;

[0106] In addition, the seed box 9 is used to store seeds to be sown, so as to carry out sowing operation with high efficiency.

[0107] Example 10

[0108] On the basis of the above-mentioned embodiments, this embodiment further provides a seeder, including the soybean double-seedling belt precision seeder unit as described above.

[0109] The present embodiment also provides a seeder with a simple structure and reasonable design. It provides an air-suction double-seedling belt sowing unit, which can realize two planting modes of single-row corn and double-row soybean by replacing parts, thereby reducing the purchase cost of the machine, improving the efficiency of machine use, and overcoming the deficiency that the existing units cannot meet two planting agronomic requirements at the same time.

[0110] The working principle of the utility model is as follows:

[0111] During the operation, the above-mentioned sowing unit is assembled on the seeder. When the seeder moves on the cultivated land, the surface of the cultivated land is smoothed by the leveling plate 3, and then the sowing disc 4 opens single or double rows of grooves for the cultivated land; finally, the seeding device 8 arranges the seeds in sequence and plants them in the grooves at even intervals, and uses the pressing wheel 6 to cover the above-mentioned grooves with soil, thereby completing the sowing operation, which is convenient and efficient.

[0112] The sowing unit provided by the utility model adopts a single-row sowing method when sowing corn, and the sowing unit adopts double discs for furrowing, single-row seed guide tubes for dropping seeds, and single-row suppression; the double seedling belt sowing method is adopted when sowing soybeans, and the sowing unit adopts single discs for furrowing, double-row seed guide tubes for dropping seeds, and double-row suppression. The above-mentioned sowing unit can be switched from single-row sowing to double seedling belt sowing by adding relevant accessories, increasing the sowing density and reducing the user's machine purchase cost, without the need to purchase additional units, and at the same time adopting an air suction seeding device to improve the sowing accuracy and sowing efficiency.

[0113] The monomer provided by the utility model can quickly realize the switching between single-row sowing and double-row sowing, adopts the air suction seeding device, realizes single-row and double-row sowing by changing the seed disc and the seed guide tube, and matches the corresponding installation methods of the seed disc, the depth limiting wheel and the pressing wheel according to the single-row and double-row sowing methods.

[0114] The advantages of the utility model are:

[0115] 1. The double-seedling belt sowing unit of the utility model can switch the single-row furrowing to the double-row furrowing by adding a disc furrowing knife and changing the installation position of the sowing disc, so as to meet the sowing requirements of the single-row furrowing and the double-row furrowing at the same time; the air suction seeding device can ensure the precise sowing of various crops; the depth limiting device and the suppression device can meet the single-row and double-row sowing requirements at the same time.

[0116] 2. The double-seedling belt sowing unit of the utility model can complete single-row sowing operations as well as double-row sowing operations, thereby improving operation efficiency and eliminating the need for users to purchase additional sowing units, thereby reducing user machine purchase costs and production inputs.

[0117] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0118] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A soybean double seedling belt precision sowing unit, characterized in that: The invention comprises a single frame (7), a sowing disc (4), a seeding device (8) and a suppressing wheel (6); the sowing disc (4) is mounted on the single frame (7) and is used for single-row furrowing or double-row furrowing; the seeding device (8) is mounted on the single frame (7) and is located above the sowing disc (4) and is used for single-row or double-row sowing in the furrows opened by the sowing disc (4); the suppressing wheel (6) is mounted on the single frame (7) and is located at the rear side of the sowing disc (4) and is used for covering the furrows after sowing.

2. The soybean double seedling belt precision sowing unit according to claim 1, characterized in that: The seeding disc (4) comprises a seed furrow smoother (12) and two disc bodies (41), wherein the two disc bodies (41) are mounted on the single frame (7) so as to rotate relative to each other and are used for opening furrows; the seed furrow smoother (12) is fixedly mounted on the single frame (7) and is located between the two disc bodies (41) and is used for smoothing the bottom of the opened furrows.

3. The soybean double seedling belt precision sowing unit according to claim 2, characterized in that: The seed meter (8) comprises an outer shell, a single-row hole seed disk (16) and a single-row seed guide tube (17); the outer shell is fixedly mounted on the single frame (7), and a seed inlet and a seed outlet are provided at the top and bottom thereof respectively; the single-row hole seed disk (16) is rotatably mounted in the outer shell, the upper end of the single-row seed guide tube (17) is connected to the seed outlet, and the lower end extends to the upper part between the two disc bodies (41).

4. The soybean double seedling belt precision sowing unit according to claim 2, characterized in that: The suppressing wheel (6) comprises a suppressing wheel bracket (29), a spring mounting plate (27), a spring (28) and a pair of wheel bodies (31); the suppressing wheel bracket (29) is rotatably mounted on the single frame (7), on which a spring handle (30) is rotatably mounted, and the pair of wheel bodies (31) are relatively rotatably mounted on the suppressing wheel bracket (29); the spring mounting plate (27) is fixedly mounted on the single frame (7), one end of the spring (28) is mounted on the spring mounting plate (27), and the other end is mounted on the lower end of the spring handle (30).

5. The soybean double seedling belt precision sowing unit according to claim 1, characterized in that: The sowing disc (4) comprises two disc bodies (41), two disc furrowing knives (10) and two guard plates (11); the two disc furrowing knives (10) are relatively fixedly mounted on the single frame (7); the two guard plates (11) are relatively fixedly mounted at the rear ends of the two disc furrowing knives (10); the two disc bodies (41) are relatively rotatably mounted on the sides of the two disc furrowing knives (10) away from each other, for furrowing.

6. The soybean double seedling belt precision sowing unit according to claim 5, characterized in that: The seed meter (8) comprises a shell, a double-row hole seed disc (18), a seed separation plate (19) and a double-row seed guide tube (20). The shell is fixedly mounted on the single frame (7), and a seed inlet and a seed outlet are provided on the top and bottom of the shell respectively. The double-row hole seed disc (18) is rotatably mounted in the shell. The seed separation plate (19) is fixedly mounted at the seed outlet, and divides the seed outlet into two outlets. The upper end of the double-row seed guide tube (20) is fixedly connected to the seed separation plate (19), and the lower end extends to the upper part between the two disc bodies (41). The double-row seed guide tube (20) is in an inverted Y shape, and two seed placement channels which are independent of each other and are respectively connected to the two sides of the lower end are provided in the upper part thereof. The two sides of the lower end of the double-row seed guide tube (20) are respectively connected to the two outlets. The cross-sections of the two guard plates (11) are respectively U-shaped, and the two sides of the lower end of the double-row seed guide tube (20) pass through the two guard plates (11) respectively.

7. The soybean double seedling belt precision sowing unit according to claim 5, characterized in that: The suppressing wheel (6) comprises a spring mounting plate (27), a pair of suppressing wheel brackets (29), a pair of springs (28) and two pairs of wheel bodies (31); the pair of suppressing wheel brackets (29) are mounted on the single frame (7) for relative rotation, and spring handles (30) are mounted on the single frame for relative rotation and position; the two pairs of wheel bodies (31) are mounted on the pair of suppressing wheel brackets (29) for relative rotation; the spring mounting plate (27) is fixedly mounted on the single frame (7), one end of the pair of springs (28) is respectively mounted on the spring mounting plate (27), and the other end is respectively mounted on the lower ends of the two spring handles (30).

8. The soybean double seedling belt precision sowing unit according to any one of claims 1 to 7, characterized in that: It also comprises a depth limiting wheel (5), which is mounted on the single frame (7) and is located on one side of the sowing disc (4).

9. The soybean double seedling belt precision sowing unit according to any one of claims 1 to 7, characterized in that: It also includes a soil leveling plate (3) and a seed box (9), wherein the soil leveling plate (3) is fixedly mounted on the single frame (7) and is located in front of the sowing disc (4); the seed box (9) is fixedly mounted on the single frame (7) and is located above the seed meter (8), and a seed discharge port for delivering seeds to the seed meter (8) is provided at its bottom.

10. A seed drill, characterized in that: It comprises the soybean double-seedling belt precision sowing unit as described in any one of claims 1 to 9.

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