Seeding device of seeding machine

Abstract

The utility model relates to the field of seeding equipment, and discloses a seeding device of a seeding machine, the seeding device comprises a seed box, a seeding disc, a plurality of duckbills and a fixing plate, the seeding disc is rotatably connected to the seed box, the rotation axis of the seeding disc coincides with the axis of the seeding disc, the duckbills are connected to the periphery of the seeding disc, and the duckbills are uniformly distributed around the axis of the seeding disc in the circumferential direction; a containing cavity is formed in the seeding disc, a plurality of seeding openings are formed in the wall of the containing cavity, the number of the seeding openings is the same as that of the duckbills, the seeding openings are in one-to-one correspondence with the duckbills, the seeding openings communicate with the containing cavity and the duckbills, a through groove is formed in the other side of the seeding disc and communicates with the containing cavity, and the fixing plate is connected to the seeding disc and covers an opening of the through groove. Corresponding fixing plates are taken down according to needs, a user adjusts the interior of the seeding machine, seeds are prevented from falling into corresponding duckbills, when the duckbills are opened, no seeds fall into soil holes formed by the duckbills, the seeding spacing of the seeding machine is adjusted, the seeding spacing adjusting mode is convenient to operate, and the application range of the seeding machine is widened.

Description

Technical Field

[0001] The present application relates to the technical field of sowing equipment, and in particular to a sowing device of a seeder. Background Art

[0002] A hand-pushed seeder refers to a planting machine that takes crops and seeds as sowing objects. The hand-pushed seeder has the characteristics of uniform sowing, consistent depth, stable row spacing, good soil covering, seed saving, and high work efficiency. It mainly consists of a push rod, a seed box, a sowing disk, and a duckbill. As the seeder moves forward, during the rotation of the sowing disk, the duckbill on the side of the sowing disk pierces into the soil, and the seeds that fall freely in a fixed quantity from the seed box into the sowing disk and then fall into the duckbill directly below, and the duckbill is opened in the soil pit to plant the required seeds into the soil. The operation is simple, convenient, and fast.

[0003] However, the existing agricultural hand-pushed seeders still have deficiencies in actual use: in the process of agricultural production, for different crop seeds, the required sowing density and spacing are different, and for the same crop in different environmental climates, the required planting density and spacing are also different. The duckbills of traditional hand-pushed seeders are evenly distributed on the sowing wheel, and the sowing wheel is in an overall closed state, making it difficult to directly adjust the inner side of the sowing disk to change the sowing spacing of the seeder. It is mainly necessary to disassemble several groups or add several groups of duckbills to deal with seeds with different planting densities. However, this method is complex in operation. To make the intervals between each group of sowings the same, it is necessary to remove all the duckbills and reorganize them, and the operation is rather cumbersome. Summary of the Utility Model

[0004] In order to meet the need for adjustable sowing spacing of the seeder and have the advantages of simple and convenient adjustment and adaptation to the planting densities of various crops, the present application provides a sowing device of a seeder.

[0005] The sowing device of a seeder provided by the present application adopts the following technical solutions:

[0006] A sowing device of a seeder includes a seed box, a sowing disk, duckbills, and a fixing plate. The sowing disk is rotatably connected to the seed box, and the rotation axis of the sowing disk coincides with the axis of the sowing disk. The duckbills are connected to the outer circumference of the sowing disk. There are several duckbills, and the several duckbills are circumferentially and evenly distributed around the axis of the sowing disk. A receiving cavity is provided on one side of the sowing disk close to the seed box, and the receiving cavity is used for seeds to be embedded. There are several sowing openings on the wall of the receiving cavity. The number of sowing openings is the same as and corresponds one-to-one with the number of duckbills. The sowing openings communicate the receiving cavity and the duckbills. A through groove is provided on the side of the sowing disk away from the seed box, and the through groove is connected to the receiving cavity. The fixing plate is connected to the sowing disk and covers the opening of the through groove.

[0007] By adopting the above technical solution, the corresponding fixing plate can be removed as needed, and the user can adjust the inside of the seeder to prevent seeds from falling into the corresponding duckbill, so that when the duckbill opens, no seeds fall into the soil cavity formed by the duckbill, realizing the adjustment of the seeding spacing of the seeder, and the operation of this seeding spacing adjustment method is convenient, which helps to improve the applicable range of the seeder.

[0008] Preferably, a plurality of through grooves are provided, and the plurality of through grooves are evenly distributed circumferentially around the axis of the seeding disk. The number of fixing plates is the same as the number of through grooves and they correspond one by one.

[0009] By adopting the above technical solution, there are a plurality of through grooves, and the plurality of through grooves are evenly distributed circumferentially around the axis of the seeding disk. On the premise of ensuring that the adjustment structures corresponding to each duckbill can be adjusted, the structural strength of the seeding disk is improved, and the service life of the seeding disk is prolonged.

[0010] Preferably, connection parts are respectively connected to both ends of the fixing plate along the length direction of the fixing plate. The connection parts are provided with mounting holes for bolts to pass through and be threadedly connected to the seeding disk.

[0011] By adopting the above technical solution, connection parts are provided at both ends of the fixing plate. After the bolts pass through the mounting holes and are threadedly connected to the seeding disk, the fixed connection between the fixing plate and the seeding disk is realized, reducing the possibility of the fixing plate falling off during use.

[0012] Preferably, an annular groove is provided at the groove wall on the side of the through groove away from the accommodating cavity, and the fixing plate is embedded in the annular groove.

[0013] By adopting the above technical solution, the annular groove is provided, and the fixing plate is embedded in the annular groove, realizing the preliminary fixation of the fixing plate and the seeding disk, which is convenient for subsequent fixation of the fixing plate and the seeding disk by bolts.

[0014] Preferably, positioning grooves are provided on the groove wall of the annular groove, and a positioning block is connected to the side of the fixing plate close to the accommodating cavity. The positioning block is embedded in the positioning groove.

[0015] By adopting the above technical solution, the positioning block is provided to play a guiding role in the installation of the fixing plate, facilitating the embedding of the fixing plate in the annular groove and improving work efficiency.

[0016] Preferably, a lifting plate is connected to the fixing plate.

[0017] By adopting the above technical solution, the lifting plate is provided, which is convenient for the user to pull out the fixing plate from the annular groove through the lifting plate, realizing the separation of the fixing plate and the seeding disk.

[0018] Preferably, it further includes a mounting seat, a first hoop and a second hoop. The mounting seat is rotatably connected to the side of the sowing disc away from the seed box. The rotation axis of the mounting seat coincides with the rotation axis of the sowing disc. The first hoop is connected to the side of the mounting seat away from the sowing disc. The axis of the first hoop is inclined with respect to the horizontal line. The first hoop is used to abut against the surface of the push rod away from the mounting seat. The second hoop is connected to the side of the seed box away from the sowing disc. The axis of the second hoop is parallel to the axis of the first hoop. The second hoop is used to abut against the surface of the push rod away from the mounting seat.

[0019] By adopting the above technical solution, the first hoop clamps one end of the push rod to the mounting seat, and the second hoop clamps the other end of the push rod to the seed box, realizing the fixed connection between the push rod, the mounting seat and the seed box. The axis of the first hoop is inclined with respect to the horizontal line, which is convenient for the user to hold the push rod and move the seeder to achieve sowing, improving the comfort of the user.

[0020] Preferably, it further includes a first abutting plate and a second abutting plate. The first abutting plate is connected to the side of the mounting seat close to the first hoop. The first abutting plate is located on one side of the first hoop along the axis direction of the first hoop. The first abutting plate abuts against the end of the push rod. The second abutting plate is connected to the side of the seed box close to the second hoop. The second abutting plate is located on one side of the second hoop along the axis direction of the second hoop. The second abutting plate is used to abut against the end of the push rod.

[0021] By adopting the above technical solution, the first abutting plate and the second abutting plate abut against the end of the push rod, realizing the relative fixation of the push rod, the first hoop and the second hoop along the axis direction of the first hoop, reducing the possibility of separation between the push rod and the mounting seat during use, and improving the reliability of the seeder.

[0022] Preferably, it further includes a rotating seat and a second reset member. The rotating seat is rotatably connected to the mounting seat, and the rotation axis of the rotating seat is parallel to the rotation axis of the sowing disk. The duckbill includes a movable nozzle, a fixed nozzle, a driving rod, and a first reset member. The fixed nozzle is connected to the outer periphery of the sowing disk. One end of the movable nozzle close to the sowing disk is rotatably connected to the fixed nozzle, and the rotation axis of the movable nozzle is parallel to the rotation axis of the sowing disk. One end of the driving rod is connected to the movable nozzle, and the other end of the driving rod is used to abut against the rotating seat. The driving rod is rotatably connected to the fixed nozzle, and the rotation axis of the driving rod coincides with the rotation axis of the movable nozzle. The first reset member is connected between the driving rod and the fixed nozzle, and the first reset member makes the movable nozzle tend to approach the fixed nozzle. The mounting seat is provided with a limiting plate for the rotating seat to abut against. The second reset member is connected between the rotating seat and the mounting seat, and the second reset member makes the rotating seat tend to abut against the driving rod. When the sowing disk rotates forward, the driving rod abuts against the rotating seat, and the rotating seat abuts against the limiting plate, driving the movable nozzle away from the fixed nozzle. When the sowing disk rotates backward, the driving rod abuts against the rotating seat, driving the rotating seat to rotate.

[0023] By adopting the above technical solution, during use, the seeder is pushed forward, the sowing disk rotates forward, and the rotating seat does not rotate. The driving rod abuts against the rotating seat, and the rotating seat abuts against the limiting plate, causing the driving rod to rotate against the elastic force of the first reset member, driving the movable nozzle to rotate away from the fixed nozzle, realizing the opening of the duckbill for sowing.

[0024] When reversing, the sowing disk rotates in reverse, the driving rod abuts against the rotating seat, causing the rotating seat to rotate against the elastic force of the second reset member, and the limit of the rotating seat on the driving rod disappears, enabling the sowing wheel to rotate in reverse. When the seeder reverses, there is no need to lift the seeder for movement, making the seeder convenient to use.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Remove the corresponding fixing plate as needed, and the user adjusts the inside of the seeder to prevent seeds from falling into the corresponding duckbill, so that when the duckbill opens, no seeds fall into the soil cavity formed by the duckbill, realizing the adjustment of the seeding spacing of the seeder, and this seeding spacing adjustment method is convenient to operate, which helps to improve the application range of the seeder;

[0027] 2. A ring groove is provided, and the fixing plate is embedded in the ring groove to achieve the preliminary fixation of the fixing plate and the sowing disk, facilitating the subsequent fixation of the fixing plate and the sowing disk by bolts;

[0028] 3. A positioning block is provided to guide the installation of the fixing plate, facilitating the placement of the fixing plate in the ring groove and improving work efficiency. Description of the Drawings

[0029] Figure 1It is a schematic structural diagram of the seeding device of a seeder.

[0030] Figure 2 It is a sectional view of the seeding device of a seeder.

[0031] Figure 3 It is a sectional view of the seeding device of a seeder.

[0032] Figure 4 It is a schematic exploded view of the seeding device of a seeder.

[0033] Figure 5 It is a partial sectional view of the seeding device of a seeder.

[0034] Figure 6 It is a schematic exploded view of a part of the seeding tray.

[0035] Figure 7 It is a sectional view of the seeding device of a seeder.

[0036] Explanation of reference numerals:

[0037] 1. Seed box; 11. Box body; 111. Storage cavity; 112. First rotating column; 113. Feeding channel; 12. Box cover;

[0038] 2. Seeding tray; 21. Body; 211. Accommodating cavity; 212. Seeding opening; 213. Slot; 214. Cavity; 215. Through groove; 216. Ring groove; 217. Positioning groove; 218. First rotating groove; 219. Groove; 2110. Second rotating groove; 2111. Connecting groove; 22. Connecting seat; 221. Installation groove; 23. Stop bar; 24. Brush; 25. Seed shaft; 26. First gear; 27. Second gear; 28. Third gear; 29. Driving gear; 2010. Driven gear; 2011. Abutting wheel; 20111. Disc body; 20112. Abutting rod;

[0039] 3. Duckbill; 31. Fixed nozzle; 311. Limit post; 32. Movable nozzle; 33. Driving rod; 34. First resetting member;

[0040] 4. Abutting column;

[0041] 5. Fixed plate; 51. Connecting part; 511. Installation hole; 52. Positioning block; 53. Lifting plate;

[0042] 61. Mounting seat; 611. Limiting plate; 612. Second rotating column; 62. First hoop; 63. Second hoop; 64. First abutting plate; 65. Second abutting plate; 66. Rotating seat; 67. Second resetting member; 68. Abutting wheel. Detailed implementation manners

[0043] The present application will be further described in detail below with reference to the accompanying drawings.

[0044] Referring to Figure 1 , in the embodiment of the present application, a seeding device of a seeder includes a seeding tray 2 and a seed box 1. The seed box 1 includes a box body 11, and the seeding tray 2 includes a main body 21. The main body 21 is rotatably connected to the lower end of the box body 11, and the rotation axis of the main body 21 coincides with the axis of the main body 21. The main body 21 is located on one side of the box body 11 along the axis of the main body 21.

[0045] Referring to Figure 1 and Figure 2 , the seed box 1 further includes a box cover 12. A storage cavity 111 is provided at the upper end of the box body 11 for storing seeds. The box cover 12 is fixedly connected to the upper end of the box body 11 and covers the opening of the storage cavity 111. An accommodation cavity 211 is provided on one side of the main body 21 close to the box body 11 for seeds to be embedded. A first rotation groove 218 is coaxially provided on one side of the main body 21 close to the box body 11, and the first rotation groove 218 communicates with the accommodation cavity 211. A first rotation column 112 is fixedly connected to one side of the box body 11 close to the main body 21, and the first rotation column 112 is rotatably and coaxially embedded in the first rotation groove 218.

[0046] Referring to Figure 2 and Figure 3 , the seeding tray 2 further includes a connection seat 22, a retaining strip 23, a brush 24 and a seed shaft 25. The connection seat 22 is fixedly connected to the end of the first rotation column 112 away from the box body 11. The connection seat 22 is embedded in the accommodation cavity 211, and the side wall of the connection seat 22 fits against the cavity wall of the accommodation cavity 211. The brush 24 is rotatably connected to the surface of the connection seat 22 close to the box body 11, and the rotation axis of the brush 24 is parallel to the axis direction of the first rotation column 112. The seed shaft 25 is rotatably connected to the surface of the connection seat 22 close to the box body 11, and the outer wall of the seed shaft 25 abuts against the outer wall of the brush 24. The retaining strip 23 is fixedly connected to the surface of the connection seat 22 close to the box body 11, and the surface of the retaining strip 23 away from the connection seat 22 fits against the surface of the accommodation cavity 211 close to the box body 11. The retaining strip 23 is arc-shaped, and both ends of the retaining strip 23 along the length direction of the retaining strip 23 are respectively in contact with the outer walls of the brush 24 and the seed shaft 25. A feeding channel 113 is provided at the cavity wall of the storage cavity 111 close to the connection seat 22, and the feeding channel 113 communicates with the inner side of the retaining strip 23.

[0047] Referring to Figure 4 and Figure 5, the seeding device of a seeder further includes a fixing plate 5. A plurality of through grooves 215 are provided on the side of the main body 21 away from the box body 11. The plurality of through grooves 215 are evenly distributed circumferentially around the axis of the main body 21, and the through grooves 215 communicate with the accommodating cavity 211. In this embodiment, there are six through grooves 215. The number of the fixing plates 5 is the same as that of the through grooves 215 and they correspond one by one. The fixing plates 5 are connected to the main body 21 and cover the openings of the through grooves 215. An annular groove 216 is provided on the groove wall of the through groove 215 on the side away from the cavity 214. The fixing plate 5 is embedded in the annular groove 216, and the side wall of the fixing plate 5 fits with the groove wall of the annular groove 216. A groove 219 is coaxially provided on the side of the main body 21 away from the box body 11. A connecting groove 2111 is provided on the groove wall of the annular groove 216 close to the groove 219, and the connecting groove 2111 communicates with the groove 219. A lifting plate 53 is fixedly connected to the side wall of the fixing plate 5. The lifting plate 53 is embedded in the connecting groove 2111, and the end of the lifting plate 53 away from the fixing plate 5 extends into the groove 219. A positioning groove 217 is provided on the groove wall of the annular groove 216. The positioning groove 217 is located on the side of the annular groove 216 away from the groove 219. A positioning block 52 is fixedly connected to the surface of the fixing plate 5 close to the cavity 214. The positioning block 52 is embedded in the positioning groove 217. Connecting parts 51 are respectively fixedly connected to both ends of the fixing plate 5 along the length direction of the fixing plate 5. The connecting parts 51 are provided with mounting holes 511 for bolts to pass through and be threadedly connected to the main body 21. The two connecting parts 51 of two adjacent fixing plates 5 are arranged in a staggered manner.

[0048] Referring to Figure 6 and Figure 7 , the seeding tray 2 further includes a first gear 26, a second gear 27 and a third gear 28. An installation groove 221 is provided on the side of the connecting seat 22 close to the cavity 214. The first gear 26, the second gear 27 and the third gear 28 are all rotatably embedded in the installation groove 221. The first gear 26 is coaxially and fixedly connected to the seed shaft 25, the third gear 28 is coaxially and fixedly connected to the brush 24, the rotation axis of the second gear 27 is parallel to the rotation axis of the seed shaft 25, and the second gear 27 meshes with the first gear 26 and the third gear 28.

[0049] The seeding device of a seeder further includes abutting columns 4. The number of the abutting columns 4 is the same as that of the seeding openings 212 and they correspond one by one. The abutting columns 4 are embedded in the cavity 214, and one end of the abutting column 4 is fixedly connected to the bottom of the cavity 214.

[0050] The seeding tray further includes a driving gear 29, a driven gear 2010, and an abutting wheel 2011. The driven gear 2010 is coaxially and fixedly connected to the side of the first gear 26 away from the seed shaft 25. The driving gear 29 is rotatably connected to the connecting seat 22. The rotation axis of the driving gear 29 is parallel to the rotation axis of the driven gear 2010, and the driving gear 29 meshes with the driven gear 2010. The abutting wheel 2011 includes a disc body 20111 and an abutting rod 20112. The disc body 20111 is coaxially and fixedly connected to the side of the driving gear 29 away from the first gear 26. One end of the abutting rod 20112 is fixedly connected to the outer circumference of the disc body 20111. The abutting rod 20112 is used to abut against the outer wall of the abutting column 4. A plurality of abutting rods 20112 are provided, and the plurality of abutting rods 20112 are circumferentially and evenly distributed around the axis of the disc body 20111. In this embodiment, seven abutting rods 20112 are provided.

[0051] Referring to Figure 3 and Figure 4 , the seeding device of a seeder further includes a duckbill 3. The duckbill 3 includes a fixed nozzle 31. The fixed nozzle 31 is fixedly connected to the outer wall of the body 21. The number of the fixed nozzles 31 is the same as and corresponds one by one to the number of seeding openings 212, and the seeding openings 212 communicate with the openings of the fixed nozzles 31.

[0052] Referring to Figure 4 , the duckbill 3 further includes a movable nozzle 32, a driving rod 33, and a first reset member 34. The number of the movable nozzles 32, the driving rods 33, and the first reset members 34 is the same as and corresponds one by one to the number of the fixed nozzles 31. One end of the movable nozzle 32 close to the body 21 is rotatably connected to the fixed nozzle 31. The rotation axis of the movable nozzle 32 is parallel to the rotation axis of the body 21. One end of the driving rod 33 is rotatably connected to the side of the fixed nozzle 31 away from the box body 11. The rotation axis of the driving rod 33 coincides with the rotation axis of the movable nozzle 32, and one end of the driving rod 33 is fixedly connected to the movable nozzle 32. The first reset member 34 is connected between the driving rod 33 and the fixed nozzle 31. The first reset member 34 makes the movable nozzle 32 tend to approach the fixed nozzle 31 to realize the closing of the opening. In this embodiment, the first reset member 34 is a torsion spring. One end of the first reset member 34 is sleeved on the outer circumference of the driving rod 33. A limiting column 311 is fixedly connected to the side of the fixed nozzle 31 close to the driving rod 33. The other end of the first reset member 34 is sleeved on the outer circumference of the limiting column 311.

[0053] Referring to Figure 2 and Figure 4, The seeding device of a seeding machine further includes a mounting seat 61, a rotating seat 66, a contact wheel 68 and a second reset member 67. The mounting seat 61 is rotatably connected to the side of the main body 21 away from the box body 11, and the rotation axis of the mounting seat 61 coincides with the axis of the main body 21. A second rotation groove 2110 is coaxially provided on the side of the main body 21 away from the box body 11. A second rotation column 612 is fixedly connected to the side of the mounting seat 61 close to the main body 21, and the second rotation column 612 is rotatably and coaxially embedded in the second rotation groove 2110. The rotating seat 66 is rotatably connected to the lower end of the mounting seat 61, and the rotation axis of the rotating seat 66 is parallel to the axis of the main body 21. The contact wheel 68 is connected to the side of the rotating seat 66 close to the driving rod 33, and the outer wall of the contact wheel 68 is used for the end of the driving rod 33 away from the moving nozzle 32 to abut. A limiting plate 611 is fixedly connected to the side of the mounting seat 61 close to the rotating seat 66. The limiting plate 611 is located on the side of the mounting seat 61 close to the main body 21, and the limiting plate 611 is used for the surface of the rotating seat 66 away from the contact wheel 68 to abut. The second reset member 67 is connected between the rotating seat 66 and the mounting seat 61, and the second reset member 67 makes the contact wheel 68 have a tendency to abut against the driving rod 33. In this embodiment, the second reset member 67 is a torsion spring. One end of the second reset member 67 is connected to the rotating seat 66, and the other end of the second reset member 67 is connected to the mounting seat 61. When the main body 21 rotates forward, the driving rod 33 abuts against the rotating seat 66, the rotating seat 66 abuts against the limiting plate 611, and the driving nozzle 32 is driven away from the fixed nozzle 31. When the seeding disk 2 main body 21 rotates in reverse, the driving rod 33 abuts against the rotating seat 66, driving the rotating seat 66 to rotate.

[0054] Referring to Figure 4 , The seeding device of a seeding machine further includes a first hoop 62 and a first contact plate 64. The first hoop 62 is fixedly connected to the surface of the mounting seat 61 away from the main body 21, and the axis of the first hoop 62 is inclined to the horizontal line. The first hoop 62 is used to tightly press the surface of the push rod away from the mounting seat 61. The first contact plate 64 is fixedly connected to the surface of the mounting seat 61 close to the first hoop 62. The first contact plate 64 is located on one side of the first hoop 62 along the axis direction of the first hoop 62. The first contact plate 64 is located below the first hoop 62, and the first contact plate 64 is used to abut against the end of the push rod.

[0055] Referring to Figure 1, The seeding device of a seeder further includes a second hoop 63 and a second abutting plate 65. The second hoop 63 is fixedly connected to the surface of the box body 11 away from the main body 21, and the axis of the second hoop 63 coincides with the axis of the first hoop 62. The second hoop 63 is used to tightly abut against the surface of the push rod away from the box body 11. The second abutting plate 65 is fixedly connected to the surface of the box body 11 close to the second hoop 63. The second abutting plate 65 is located on one side of the second hoop 63 along the axis direction of the second hoop 63. The second abutting plate 65 is located below the second hoop 63, and the second abutting plate 65 is used to abut against the end of the push rod.

[0056] The implementation principle of the seeding device of the seeder in the embodiment of the present application is as follows: The main body 21 rotates, driving the abutting column 4 to rotate. The abutting column 4 rotates and abuts against the abutting rod 20112, driving the disc body 20111 to rotate, driving the driving gear 29 to rotate, driving the driven gear 2010 to rotate, driving the first gear 26 to rotate, driving the seed shaft 25 to rotate, so that the seeds in the seed shaft 25 fall into the next seeding port 212. When the duckbill 3 is opened, the seeds in the seeding port 212 fall out from the duckbill 3 to achieve seeding.

[0057] When it is necessary to change the seeding spacing, loosen the bolts of the corresponding fixing plate 5, and by setting and pulling the lifting plate 53, drive the fixing plate 5 to disengage from the annular groove 216, so that the fixing plate 5 is separated from the main body 21, and the corresponding abutting column 4 is removed to realize the adjustment of the seeding spacing of the seeder.

[0058] The above are all the preferred embodiments of the present application. It does not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A seeding device of a seeder, characterized in that: It includes a seed box (1), a sowing tray (2), a duckbill (3) and a fixing plate (5); the sowing tray (2) is rotatably connected to the seed box (1); the rotation axis of the sowing tray (2) coincides with the axis of the sowing tray (2); the duckbill (3) is connected to the outer periphery of the sowing tray (2); there are several duckbills (3); several said duckbills (3) are evenly distributed circumferentially around the axis of the sowing tray (2); on one side of the sowing tray (2) close to the seed box (1), there is a receiving cavity (211); the receiving cavity (211) is used for seeds to be embedded; several sowing openings (212) are provided on the wall of the receiving cavity (211); the number of the sowing openings (212) is the same as and corresponds one by one to the number of the duckbills (3); the sowing openings (212) communicate the receiving cavity (211) and the duckbill (3); on the side of the sowing tray (2) far from the seed box (1), there is a through groove (215); the through groove (215) communicates with the receiving cavity (211); the fixing plate (5) is connected to the sowing tray (2) and covers the notch of the through groove (215).

2. The seeding device of the seeder according to claim 1, characterized in that: There are several said through grooves (215); several said through grooves (215) are evenly distributed circumferentially around the axis of the sowing tray (2); the number of the fixing plates (5) is the same as and corresponds one by one to the number of the through grooves (215).

3. The seeding device of the seeder according to claim 2, characterized in that: At both ends of the fixing plate (5) along the length direction of the fixing plate (5), there are respectively connecting parts (51) connected; the connecting parts (51) are provided with mounting holes (511); the mounting holes (511) are used for bolts to pass through and be threadedly connected to the sowing tray (2).

4. The seeding device of the seeder according to claim 3, characterized in that: On the groove wall of the through groove (215) on the side far from the receiving cavity (211), there is an annular groove (216); the fixing plate (5) is embedded in the annular groove (216).

5. The seeding device of the seeder according to claim 4, characterized in that: On the groove wall of the annular groove (216), there is a positioning groove (217); on the side of the fixing plate (5) close to the receiving cavity (211), there is a positioning block (52) connected; the positioning block (52) is embedded in the positioning groove (217).

6. The seeding device of the seeder according to claim 4, characterized in that: The fixing plate (5) is connected with a lifting plate (53).

7. The seeding device of the seeder according to claim 1, characterized in that: It also includes a mounting seat (61), a first hoop (62) and a second hoop (63); the mounting seat (61) is rotatably connected to the side of the sowing tray (2) far from the seed box (1); the rotation axis of the mounting seat (61) coincides with the rotation axis of the sowing tray (2); the first hoop (62) is connected to the side of the mounting seat (61) far from the sowing tray (2); the axis of the first hoop (62) is inclined to the horizontal line; the first hoop (62) is used to press against the surface of the push rod far from the mounting seat (61); the second hoop (63) is connected to the side of the seed box (1) far from the sowing tray (2); the axis of the second hoop (63) is parallel to the axis of the first hoop (62); the second hoop (63) is used to press against the surface of the push rod far from the mounting seat (61).

8. The seeding device of the seeder according to claim 7, characterized in that: It further includes a first abutting plate (64) and a second abutting plate (65); the first abutting plate (64) is connected to one side of the mounting base (61) close to the first hoop (62); the first abutting plate (64) is located on one side of the first hoop (62) along the axis direction of the first hoop (62); the first abutting plate (64) abuts against the end of the push rod; the second abutting plate (65) is connected to one side of the seed box (1) close to the second hoop (63); the second abutting plate (65) is located on one side of the second hoop (63) along the axis direction of the second hoop (63); the second abutting plate (65) is used to abut against the end of the push rod.

9. The seeding device of the seeder according to claim 7, characterized in that: It further includes a rotating seat (66) and a second reset member (67); the rotating seat (66) is rotatably connected to the mounting base (61); the rotation axis of the rotating seat (66) is parallel to the rotation axis of the sowing disc (2); the duckbill (3) includes a movable nozzle (32), a fixed nozzle (31), a driving rod (33) and a first reset member (34); the fixed nozzle (31) is connected to the outer circumference of the sowing disc (2); one end of the movable nozzle (32) close to the sowing disc (2) is rotatably connected to the fixed nozzle (31); the rotation axis of the movable nozzle (32) is parallel to the rotation axis of the sowing disc (2); one end of the driving rod (33) is connected to the movable nozzle (32); the other end of the driving rod (33) is used to abut against the rotating seat (66); the driving rod (33) is rotatably connected to the fixed nozzle (31); the rotation axis of the driving rod (33) coincides with the rotation axis of the movable nozzle (32); the first reset member (34) is connected between the driving rod (33) and the fixed nozzle (31); the first reset member (34) makes the movable nozzle (32) tend to approach the fixed nozzle (31); the mounting base (61) is provided with a limiting plate (611); the limiting plate (611) is used for the rotating seat (66) to abut against; the second reset member (67) is connected between the rotating seat (66) and the mounting base (61); the second reset member (67) makes the rotating seat (66) tend to abut against the driving rod (33); when the sowing disc (2) rotates forward, the driving rod (33) abuts against the rotating seat (66), and the rotating seat (66) abuts against the limiting plate (611); driving the movable nozzle (32) to move away from the fixed nozzle (31); when the sowing disc (2) rotates in reverse, the driving rod (33) abuts against the rotating seat (66), driving the rotating seat (66) to rotate.

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