Precision seeding equipment for beans

Abstract

The present invention relates to a bean precision sowing device. It solves the problem of poor sowing effect and low efficiency of the prior art sowing device. It comprises a sowing device body installed on a sowing unit group, a seed inlet is provided at the upper end of the sowing device body, sowing disc assemblies corresponding to each other are rotatably provided on both sides of the sowing device body, two sowing bins are provided in the sowing device body, which are respectively located on the inner side of the sowing disc assembly and are both connected to the seed inlet, and two seed outlets are provided at the lower end of the sowing device body, which are respectively connected to the sowing bins. The advantages of the present invention are: high sowing efficiency and good sowing effect.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery and equipment, and in particular to a bean precision sowing device. Background Art

[0002] The beans precision seeding devices of existing precision seeders can be roughly divided into pneumatic seeding or mechanical seeding, and the mechanical seeding mainly includes vertical disc seeding, eyelet wheel seeding, etc. They have the following disadvantages:

[0003] 1. In vertical disc seeders, seeds enter the holes freely from the side of the disc, and the seed cleaning device is also installed on the side, which cannot effectively clean the inside of the seed holes. When in use, it is easy to cause empty holes and missing seeds due to untimely seed filling or blockage of the seed holes.

[0004] 2. For the socket wheel seeder, since a large number of seeds fall directly onto the socket wheel, the excess seeds are cleaned by the rotating parts that rotate continuously to achieve the requirements of precision sowing. During use, due to the high pressure of seeds and untimely cleaning, it is easy to cause multiple seeds, double seeds, etc., and the requirements of precise single seed sowing cannot be achieved.

[0005] 3. The precision seeder equipped with the existing mechanical seeder is suitable for sowing operation speed below 6 kilometers per hour. If it is operated at an overspeed, the seeds cannot enter the seed holes in time, resulting in empty holes and missing seeds, which limits the working efficiency of the precision seeder. Summary of the invention

[0006] The purpose of the present invention is to provide a bean precision seeding device with good seeding effect and high efficiency in view of the above problems. It is a new type of seeding device that combines a traditional vertical disc seeding device with a socket wheel seeding device.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: the bean precision sowing device comprises a seeder body installed on a sowing unit, a seed inlet is provided at the upper end of the seeder body, sowing disc assemblies are rotatably provided on both sides of the seeder body and are corresponding to each other, two sowing bins are provided in the seeder body, which are respectively located on the inner side of the sowing disc assembly and are both connected to the seed inlet, and two seed outlets are provided at the lower end of the seeder body, which are respectively connected to the sowing bins. By arranging sowing bins corresponding to the sowing disc assembly on both sides of the seeder body, the seed inlet, the sowing bin and the seed outlet are interconnected, and the rotation of the sowing disc assembly is used to perform double-row precision single-grain spot sowing, with high sowing efficiency. In addition, the device has few parts, is easy to install and adjust, and is easy to maintain and use.

[0008] In the above-mentioned bean precision seeding device, a seed box connected to the seed inlet is provided at the upper end of the seeder body, and a seeding wheel assembly connected to the seeding unit group is provided at the lower end of the seeder body.

[0009] In the above-mentioned bean precision seeding device, a seeding drive mechanism for driving the two seeding disc assemblies to rotate synchronously in a circumferential direction relative to the seeding device body is provided on the seeding unit.

[0010] In the above-mentioned bean precision sowing device, the seeder body includes a seeder shell, which is composed of two half-bin bodies, and the half-bin body has a circular sowing tray installation opening on one side away from the other half-bin body, and a sowing tray installation hole that penetrates the two half-bin bodies and is located at the center of the sowing tray installation opening is provided between the two half-bin bodies, and one side of the lower end of the half-bin body has a seed inlet that is arranged correspondingly and can connect the seed inlet and the sowing bin respectively, and an inclined seed guide structure is provided between the side of the seed inlet away from the sowing bin and the seed inlet, and the seed outlet is arranged on the other side of the lower end of the half-bin body and extends downward and is staggered with the seed inlet. The inclined seed guide structure can evenly guide the incoming seeds into two different sowing bins to achieve double-row simultaneous sowing, thereby improving the sowing efficiency.

[0011] In the above-mentioned precision seeding device for beans, the half-bin body includes a half-bin cylinder part which is open at one end and closed at the other end, and a half-bin hopper part is provided at the closed end of the half-bin cylinder part. When the half-bin hopper parts of the two half-bin bodies are assembled with each other, a seed inlet is formed between the upper ends of the two half-bin hopper parts, and an inclined seed guide structure is formed between the lower ends of the two half-bin hopper parts; the seeding plate mounting opening is formed at the open opening of the half-bin cylinder part, and the seeding bin is formed on the circumferential inner side of the half-bin cylinder part, the seed inlet is formed at the closed end of the half-bin cylinder part, and the seed outlet is formed on the circumferential outer side of the half-bin cylinder part; the circumferential outer side of the half-bin cylinder part has an outlet cylinder part which is connected to the half-bin cylinder part as a whole, and one side of the outlet cylinder part is closed by an outlet sealing plate, the seed outlet is formed on the circumferential inner side of the outlet cylinder part, and the upper end of the seed outlet It is connected to the notch of the cylinder on the circumferential outer side of the half-bin cylinder; the two half-bin bodies are connected by a detachable splicing structure, which includes a reinforcing plate arranged on one side of the half-bin hopper and connected to the outer side of the closed end of the half-bin cylinder, and connecting columns are respectively arranged on the reinforcing plate, the outer side of the closed end of the half-bin cylinder and / or the half-bin hopper, and the connecting columns respectively have a bin body connecting hole that penetrates the closed end of the half-bin cylinder, and the bin body connecting holes on the two half-bin bodies correspond to each other and are connected by connecting bolts; an axle cylinder body is arranged at the center of the closed end of the half-bin cylinder, and one end of the axle cylinder body extends into the sowing bin, and the other end extends to the center of the half-bin hopper, and the sowing plate mounting hole is formed on the circumferential inner side of the axle cylinder body, and when the two half-bin bodies are spliced ​​together, the axle cylinder bodies are butt-jointed and connected to each other. The setting of the outlet sealing plate can prevent splashing when the seeds are exported, ensure the movement trajectory of the seeds, and have good stability; and the setting of the detachable splicing structure makes the disassembly and assembly of the device more convenient, easy to maintain, and the structure is more stable.

[0012] In the above-mentioned bean precision sowing device, the inclined seed guiding structure includes a seed storage cavity arranged at the lower end of the half-bin hopper part and corresponding to the seed inlet, the seed storage cavity is connected to the seed inlet through the first inclined seed guiding component, and the seed storage cavity is connected to the seed inlet through the second inclined seed guiding component; the first inclined seed guiding component includes a seed inlet plate arranged vertically and facing one side of the half-bin cylinder part, a vertical plate arranged vertically is provided on one side of the seed inlet plate, and an inclined plate arranged obliquely is provided on the other side, and the vertical plates and the inclined plates of the two half-bin hopper parts correspond to each other one by one to form the above-mentioned seed inlet, a horizontal part is provided at the lower end of the vertical plate, and an inclined seed guiding part connected to the seed storage cavity is provided on one side of the horizontal part; the second inclined seed guiding component includes a seed storage shell part whose two ends are respectively connected to the inclined seed guiding part and the inclined plate, the seed storage cavity forms the circumferential inner side of the seed storage shell part and the seed inlet is formed on one side of the seed storage shell part, and the lower end of the seed storage shell part has an inclined seed guiding surface arranged obliquely toward the seed inlet, and the inclined seed guiding surfaces of the two half-bin hopper parts are distributed in an inverted V shape. The setting of the first inclined seed guide component can make the seeds entering through the seed inlet contact the second inclined seed guide component and enter the sowing bin after being sorted, preventing the seeds from colliding and splashing after entering and entering the sowing bin without being sorted, and has good stability; the inverted V-shaped structure formed by the inclined seed guide surface can make the seeds evenly enter the sowing bins on both sides, preventing accumulation.

[0013] In the above-mentioned bean precision seeding device, the seeding plate assembly includes a seeding plate body which is arranged at the seeding plate installation opening through a rotating installation structure and can close the outer side of the seeding bin, and a plurality of open holes are provided on the seeding plate body near the semi-bin cylinder, which are located at the circumferential outer edge of the seeding plate body and extend radially, and a plurality of seeding guide grooves are provided on the circumferential outer side of the seeding plate body, which are inclined in the direction opposite to the rotation direction of the seeding plate body and are respectively connected to the open holes one by one, and the open holes on the seeding plates on both sides of the seeder shell correspond to each other one by one or are circumferentially staggered, and a seeding guide groove is formed at the end of the open hole away from the seeding guide groove. At the debris outlet at the circumferential outer edge of the sowing disc body, a brush assembly corresponding to the seed entry guide groove and the open hole is fixed on the inner side of the semi-bin cylinder, and a seed retaining plate is obliquely arranged on the inner side of the upper end of the seeder housing on one side of the brush assembly, and one end of the seed retaining plate extends to the outer side of one end of the seed entry guide groove away from the open hole, and the other end extends to the outer side of the open hole; a recessed portion is arranged on the side of the sowing disc away from the semi-bin cylinder, and a plurality of concentric reinforcing rings are arranged in the recessed portion, and a plurality of reinforcing ribs are arranged between the reinforcing rings and the reinforcing ribs extend in the radial direction of the sowing disc body, and the reinforcing rings and the reinforcing ribs are flush with the circumferential outer side of the sowing disc body. The sowing disc body guides the bean seeds to be sown one by one, and when the bean seeds move inside the seeder housing, the brush assembly cooperates with the seed retaining plate to prevent multiple seeds from falling out of the seed outlet, thereby realizing the precise sowing of the bean seeds.

[0014] In the above-mentioned bean precision sowing device, the brush assembly and the seed baffle are respectively located in the sowing bin, and the brush assembly includes a seed entry brush, a seed protection brush and a seed cleaning brush which are staggered or adjacently arranged in sequence along the circumferential outer side of the sowing disc body. The seed entry brush is obliquely arranged at one side of the seed entry port, the seed protection brush is arc-shaped and corresponds to the open hole, the seed cleaning brush is arc-shaped and obliquely arranged, and one end of the seed cleaning brush is located between the seed baffle plate and the seed protection brush, and the other end extends to one side of the upper end of the seed outlet; a brush mounting plate is provided on the inner side of the semi-bin cylinder, and a seed entry notch corresponding to the seed entry port is provided on the brush mounting plate, and the seed entry brush and the seed cleaning brush are respectively arranged on the brush mounting plate, and the circumferential outer side of the brush mounting plate has a brush located between the seed entry brush and the seed cleaning brush and corresponding to the sowing An arc-shaped limiting portion corresponding to the circumferential outer side of the seed tray body; an arc-shaped seed protection brush fixing ring corresponding to the circumferential outer side of the seed tray body is provided at the inner upper end of the inner side of the semi-silo cylinder, and the arc-shaped limiting portion is arranged on the inner side of one end of the seed protection brush fixing ring, the seed protection brush is arranged on the outer circumference of the seed protection brush fixing ring and on the circumference of the inner upper end of the semi-silo cylinder, and the two ends extend to the inner sides of the upper ends of the seed entry brush and the seed cleaning brush respectively; the seed outlet is arranged between the two ends of the seed protection brush fixing ring, and the seed protection brush fixing ring is arranged on the inner side of the semi-silo cylinder in an arc shape and corresponding to the circumferential outer side of the seed tray body, the seed blocking plate is arranged on the circumferential inner side of the seed protection brush fixing ring through a connecting bracket, and one end of the seed blocking plate extends to the seed protection brush, and the other end extends to the side of the seed cleaning brush away from the seed protection brush. The seed-entering brush effectively avoids empty holes and missing seeds caused by blockage of seed holes or untimely seed filling; the seed-cleaning brush avoids the phenomenon of multiple seeds and double seeds caused by excessive seed pressure and untimely cleaning, and the sowing effect is good.

[0015] In the above-mentioned bean precision seeding device, the rotating installation structure includes a rotating shaft that is rotatably arranged in the shaft cylinder body through a bearing and has a split structure, at least one end of the rotating shaft passes through the rotating hole in the center of the seeding disc body, a seeding disc connecting seat is provided between the seeding disc body and the semi-bin cylinder, and the seeding disc connecting seat is connected to the seeding disc body through an adjustable positioning assembly for circumferential positioning, and the seeding disc connecting seat and the rotating shaft are connected through a circumferential positioning assembly; the circumferential positioning assembly includes a seat body connecting sleeve that is arranged in the center of the seeding disc connecting seat and passes through the rotating hole, the rotating shaft is passed through the seat body connecting sleeve, and the seat body connecting sleeve is circumferentially positioned through a pin shaft and the rotating shaft; the adjustable positioning assembly includes connecting holes at both ends of the seeding disc connecting seat, and the seeding disc body is respectively provided with positioning holes corresponding to the connecting holes, and the connecting holes and the positioning holes are connected by positioning bolts, and a butterfly nut threadedly connected to the positioning bolt is provided on the side of the seeding disc body away from the semi-bin cylinder. The rotating installation structure realizes the in-situ rotation of the seeding disc body relative to the seeder housing, or adjusts the distance between the seeding disc body and the seeder housing according to actual conditions to realize the effective function of the brush assembly.

[0016] In the above-mentioned bean precision seeding device, the seeding drive mechanism includes a fixed plate for mounting a seeding unit, the fixed plate is connected to the main beam of the seeding device, a transmission chain box connected to the main transmission shaft of the seeding device and to the transmission clutch is provided on the fixed plate, and the transmission clutch is connected to the rotating shaft through a transmission pin; the seeding wheel assembly includes a seeding machine ground wheel arranged on both sides of the seeding unit, a furrowing disc located below the main body of the seeding device is arranged between the seeding machine ground wheels, the seed outlet corresponds to the furrowing disc through the seeding slot, the furrowing disc is formed on the circumferential outer side of the seeding depth limiting wheel, and the seeding depth limiting wheel is connected to the main beam of the seeding device through a profiling rod, and a soil covering and pressing wheel is provided on one side of the furrowing disc. The seeding drive mechanism can adapt to the seeding operation speed of less than 10 kilometers per hour, which greatly improves the working efficiency of the precision seeding machine. The setting of the seeding wheel assembly can evenly set the seeding pits, which is conducive to the synchronous growth of bean seeds.

[0017] Compared with the existing technology, the advantages of the present invention are: reasonable design, convenient disassembly and assembly, easy maintenance and use, can adapt to double-row precision single-grain spot sowing of various round seeds such as beans, and avoid the phenomenon of empty holes and missing seeds caused by blocked seed holes or untimely filling of seeds, and the phenomenon of multiple seeds and double seeds caused by excessive seed pressure and untimely cleaning; at the same time, this device can maximize the avoidance of empty holes, missing seeds or double seeds and multiple seeds caused by various factors such as high operating speed of precision seeders, poor seed uniformity, seed coating sticking, poor seed fluidity, etc., and has good sowing effect and high sowing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the seeder housing and the seeder disc body when they are connected in the invention;

[0019] Figure 2 It is a schematic diagram of the structure of the seeder housing in the invention;

[0020] Figure 3 It is a structural schematic diagram of the seeder housing of the invention from another perspective;

[0021] Figure 4 It is a schematic diagram of the half-bin structure in the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the seeder housing after being decomposed in the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the seeding tray in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the brush assembly in the present invention;

[0025] Figure 8 It is a structural schematic diagram of the seed retaining plate and the seed protection brush fixing ring in the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the rotating installation structure in the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the seed protection brush fixing ring in the present invention;

[0028] Fig.11 It is a schematic diagram of the structure of the seed protection brush in the present invention.

[0029] Fig.12 It is a schematic diagram of the installation position of the seeder body in the present invention;

[0030] Fig.13 It is a schematic diagram of the assembly position of the transmission clutch in the present invention;

[0031] Fig.14 It is a schematic diagram of the assembly position of a single sowing group in the present invention.

[0032] In the figure, the seeder body 1, the sowing unit group 11, the seed inlet 12, the sowing bin 13, the seed outlet 14, the seed box 15, the sowing wheel assembly 16, the seeder ground wheel 161, the furrowing disc 162, the seed chute 163, the sowing depth limit wheel 164, the profiling rod 165, the soil covering and pressing wheel 166, the seeder housing 17, the half bin body 171, the sowing disc installation opening 172, the sowing disc installation hole 173, the seed inlet 174, the half bin cylinder 175, half-bin hopper part 176, outlet cylinder part 177, outlet sealing plate 178, cylinder notch 179, seeding plate assembly 2, seeding plate body 21, open hole 22, seeding guide groove 23, debris outlet 24, seed retaining plate 25, recessed part 26, reinforcement ring 27, reinforcement rib 28, seeding drive mechanism 3, fixing plate 31, seeding device main beam 32, seeding main transmission shaft 33, transmission clutch 34, transmission chain box 35, transmission Pin 36, inclined seed guiding structure 4, seed storage chamber 41, first inclined seed guiding assembly 42, seed feeding plate 421, vertical plate 422, inclined plate 423, horizontal portion 424, inclined seed guiding portion 425, second inclined seed guiding assembly 43, seed storage housing portion 431, inclined seed guiding surface 432, detachable splicing structure 5, reinforcing plate 51, connecting column 52, bin body connecting hole 53, connecting bolt 54, shaft cylinder 55, rotating mounting structure 6, shaft Bearing 61, rotating shaft 62, rotating hole 63, seeding plate connecting seat 64, brush assembly 7, seed insertion brush 71, seed protection brush 72, seed cleaning brush 73, brush mounting plate 74, seed insertion notch 75, arc-shaped limiting portion 76, seed protection brush fixing ring 77, connecting bracket 78, adjustable positioning assembly 8, connecting hole 81, positioning hole 82, positioning bolt 83, butterfly nut 84, circumferential positioning assembly 9, seat body connecting sleeve 91, and pin 92. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1-11 As shown, the bean precision sowing device comprises a seeder body 1 mounted on a sowing unit group 11, a seed inlet 12 is provided at the upper end of the seeder body 1, sowing disc assemblies 2 corresponding to each other are rotatably provided on both sides of the seeder body 1, two sowing bins 13 are provided in the seeder body 1, which are respectively located on the inner side of the sowing disc assemblies 2 and are both connected to the seed inlet 12, and two seed outlets 14 are provided at the lower end of the seeder body 1. By respectively providing sowing bins 13 corresponding to the sowing disc assemblies 2 on both sides in the seeder body 1, the bean seeds passing through the seed inlet 12 can enter the different sowing bins 13 on both sides, thereby realizing precise double-row sowing and improving sowing efficiency.

[0035] A seed box 15 connected to the seed inlet 12 is disposed at the upper end of the seeder body 1 , and a seeding wheel assembly 16 connected to the seeding unit group 11 is disposed at the lower end of the seeder body 1 .

[0036] It can be seen that the sowing unit group 11 is provided with a sowing driving mechanism 3 for driving the two sowing disc assemblies 2 to rotate synchronously relative to the seeder body 1.

[0037] Furthermore, the seeder body 1 includes a seeder shell 17, which is composed of two half-bin bodies 171, and the half-bin body 171 has a ring-shaped seeding plate mounting opening 172 on one side away from the other half-bin body 171, and a seeding plate mounting hole 173 is provided between the two half-bin bodies 171, which passes through the two half-bin bodies 171 and is located at the center of the seeding plate mounting opening 172. One side of the lower end of the half-bin body 171 has a seed inlet 174 that is correspondingly arranged and can respectively connect the seed inlet 12 and the seeding bin 13, and an inclined seed guide structure 4 is provided between the seed inlet 174 on the side away from the seeding bin 13 and the seed inlet 12, and the seed outlet 14 is arranged on the other side of the lower end of the half-bin body 171 and extends downward and is staggered with the seed inlet 12. By assembling two half bin bodies 171 into a seeder housing 17 with a seed inlet 12 in the middle, and using an inclined seed guide structure 4 to allow the bean seeds entering through the seed inlet 12 to enter different sowing bins 13 on both sides respectively, and the seeds entering the sowing bin 13 are guided out through the seed outlet 14 for double-row sowing, not only is the structure simple and easy to disassemble and assemble, but also the sowing efficiency is improved.

[0038] Specifically, the half-bin body 171 includes a half-bin cylinder 175 which is open at one end and closed at the other end, and a half-bin hopper 176 is provided at the closed end of the half-bin cylinder 175. When the half-bin hoppers 176 of the two half-bin bodies 171 are assembled with each other, the seed inlet 12 is formed between the upper ends of the two half-bin hoppers 176, and the inclined seed guide structure 4 is formed between the lower ends of the two half-bin hoppers 176; the seed tray mounting opening 172 is formed at the opening of the half-bin cylinder 175. The sowing bin 13 is formed on the inner side of the semi-bin cylinder 175, the seed inlet 174 is formed on the closed end of the semi-bin cylinder 175, and the seed outlet 14 is formed on the outer side of the semi-bin cylinder 175; the semi-bin cylinder 175 has an outlet cylinder 177 connected to the semi-bin cylinder 175 on the outer side, and one side of the outlet cylinder 177 is closed by an outlet sealing plate 178, and the seed outlet 14 is formed on the inner side of the outlet cylinder 177, and the upper end of the seed outlet 14 is connected to the semi-bin cylinder 175. The two half-bin bodies 171 are connected by a detachable splicing structure 5, which includes a reinforcing plate 51 arranged on one side of the half-bin hopper part 176 and connected to the outer side of the closed end of the half-bin barrel part 175, and a connecting column 52 is respectively provided on the reinforcing plate 51, the outer side of the closed end of the half-bin barrel part 175 and / or the half-bin hopper part 176, and the connecting column 52 has a sealing portion that penetrates the half-bin barrel part 175. The silo connection holes 53 at the closed end, and the silo connection holes 53 on the two half silo bodies 171 correspond to each other and are connected by connecting bolts 54; the closed end center of the half silo barrel 175 is provided with an axis cylinder 55, and one end of the axis cylinder 55 extends into the sowing silo 13, and the other end extends to the center of the half silo hopper 176, and the sowing plate mounting hole 173 is formed on the inner side of the axis cylinder 55 in the circumferential direction, and when the two half silo bodies 171 are spliced ​​together, the axis cylinder 55 are butt-connected to each other. The detachable splicing structure 5 makes the connection between the two half silo bodies 171 more secure, and the disassembly and assembly are more convenient; the outlet sealing plate 178 can prevent the bean seeds entering the outlet barrel 177 from splashing out, affecting the falling trajectory, and making the sowing more accurate.

[0039] Obviously, the inclined seed guiding structure 4 includes a seed storage chamber 41 arranged at the lower end of the half-bin hopper portion 176 and corresponding to the seed inlet 174, the seed storage chamber 41 is connected to the seed inlet 12 through a first inclined seed guiding component 42, and the seed storage chamber 41 is connected to the seed inlet 174 through a second inclined seed guiding component 43; the first inclined seed guiding component 42 includes a seed inlet plate 421 vertically arranged and facing one side of the half-bin cylinder portion 175, one side of the seed inlet plate 421 is provided with a vertical plate 422 arranged vertically, and the other side is provided with an inclined plate 423 arranged obliquely, and the vertical plates 422 and the inclined plates 423 of the two half-bin hopper portions 176 correspond one to one so that The above-mentioned seed inlet 12 is formed, the lower end of the vertical plate 422 is provided with a horizontal part 424, and one side of the horizontal part 424 is provided with an inclined seed guide part 425 connected to the seed storage chamber 41; the second inclined seed guide assembly 43 includes a seed storage shell part 431 whose two ends are respectively connected to the inclined seed guide part 425 and the inclined plate 423, the seed storage chamber 41 forms the inner side of the seed storage shell part 431 in the circumferential direction, and the seed inlet 174 is formed on one side of the seed storage shell part 431, and the lower end of the seed storage shell part 431 has an inclined seed guide surface 432 inclined toward the seed inlet 174, and the inclined seed guide surfaces 432 of the two half-bin hopper parts 176 are distributed in an inverted V shape. The setting of the first inclined seed guide assembly 42 can make the bean seeds entering from the seed inlet 12 roll down evenly to prevent uneven seed sorting after collision; the inverted V shape formed by the two inclined seed guide surfaces 432 is mainly used for seed sorting to prevent accumulation at the bottom of the seed storage chamber 41.

[0040] In detail, the seeding plate assembly 2 includes a seeding plate body 21 which is arranged at the seeding plate installation opening 172 through a rotating installation structure 6 and can close the outer side of the seeding bin 13, and a plurality of open holes 22 are provided on the seeding plate body 21 near the half bin cylinder 175. The seeding plate body 21 is provided with a plurality of open holes 22 located on the circumferential outer edge of the seeding plate body 21 and extending radially, and the seeding plate body 21 is provided with a plurality of seed insertion guide grooves 23 which are arranged obliquely in the direction opposite to the rotation direction of the seeding plate body 21 and are respectively connected to the open holes 22 one by one, and the open holes 22 on the seeding plates on both sides of the seeder housing 17 correspond to each other one by one or are circumferentially staggered, and the end of the open hole 22 away from the seed insertion guide groove 23 has a seed insertion guide groove formed on the circumferential outer edge of the seeding plate body 21. A debris outlet 24 is provided on the edge of the semi-silo cylinder 175, and a brush assembly 7 corresponding to the seed entry guide groove 23 and the open hole 22 is fixedly arranged on the inner side of the semi-silo cylinder 175. A seed blocking plate 25 is obliquely arranged on the inner side of the upper end of the seeder housing 17 on one side of the brush assembly 7, and one end of the seed blocking plate 25 extends to the outer side of one end of the seed entry guide groove 23 away from the open hole 22, and the other end extends to the outer side of the open hole 22; a recessed portion 26 is provided on the side of the seeding disc away from the semi-silo cylinder 175, and a plurality of concentric reinforcing rings 27 are provided in the recessed portion 26, and a plurality of reinforcing ribs 28 are provided between the reinforcing rings 27, and the reinforcing ribs 28 extend along the radial direction of the seeding disc body 21, and the reinforcing rings 27 and the reinforcing ribs 28 are flush with the circumferential outer side of the seeding disc body 21. When the sowing disc 21 rotates, the bean seeds near the sowing disc 21 enter the respective open holes 22 through the seed entry guide grooves 23 on the sowing disc 21. When some bean seeds cannot fully enter the corresponding open holes 22 in time due to factors such as the sowing disc 21 rotating too fast or the bean seeds having poor fluidity, the seed entry brush 71 will forcibly brush the seeds in the seed entry guide grooves 23 into the corresponding open holes 22.

[0041] Furthermore, the brush assembly 7 and the seed retaining plate 25 are respectively located in the sowing bin 13, and the brush assembly 7 includes a seed entry brush 71, a seed protection brush 72 and a seed cleaning brush 73 which are staggered or adjacently arranged in sequence along the circumferential outer side of the sowing disc body 21. The seed entry brush 71 is obliquely arranged on one side of the seed entry port 174, the seed protection brush 72 is arc-shaped and corresponds to the open hole 22, the seed cleaning brush 73 is arc-shaped and obliquely arranged, and one end of the seed cleaning brush 73 is located between the seed retaining plate 25 and the seed protection brush 72, and the other end extends to one side of the upper end of the seed outlet 14; a brush mounting plate 74 is provided on the inner side of the semi-bin cylinder 175, and a seed entry notch 75 corresponding to the seed entry port 174 is provided on the brush mounting plate 74, and the seed entry brush 71 and the seed cleaning brush 73 are respectively arranged on the brush mounting plate 74, and the brush mounting plate 74 has a circumferential outer side located between the seed entry brush 71 and the seed cleaning brush 73 and corresponding to the sowing An arc-shaped limiting portion 76 corresponding to the circumferential outer side of the disk body 21; an arc-shaped seed protection brush fixing ring 77 corresponding to the circumferential outer side of the sowing disk body 21 is provided at the inner upper end of the inner side of the semi-silo cylinder 175, and the arc-shaped limiting portion 76 is arranged on the inner side of one end of the seed protection brush fixing ring 77, the seed protection brush 72 is arranged on the outer circumference of the seed protection brush fixing ring 77 and on the circumference of the inner upper end of the semi-silo cylinder 175, and the two ends extend to the inner sides of the upper ends of the seed entry brush 71 and the seed cleaning brush 73 respectively, the seed outlet 14 is arranged between the two ends of the seed protection brush fixing ring 77, and the seed protection brush fixing ring 77 is arranged on the inner side of the semi-silo cylinder 175 in an arc shape and corresponding to the circumferential outer side of the sowing disk body 21, the seed blocking plate 25 is arranged on the circumferential inner side of the seed protection brush fixing ring 77 through the connecting bracket 78, and one end of the seed blocking plate 25 extends to the seed protection brush 72, and the other end extends to the seed cleaning brush 73 away from the side of the seed protection brush 72. The seeds enter the open holes 22 and rotate with the sowing disc 21. The seed protection brush 72 prevents the bean seeds from falling off due to vibration or other reasons during operation, thereby forming empty holes or missing seeds. When the bean seeds rotate with the sowing disc 21 on the inner side of the seed protection brush 72, the small excess seeds that may be contained on the outer side of the open holes 22 will fall into the sowing bin 13 from the inner side of the sowing disc 21. The seed retaining plate 25 prevents the excess bean seeds from splashing to the seed output position during the falling process of the bean seeds, and then falling with the bean seeds in the open holes 22 to cause multiple seeds. At the same time, the seed cleaning brush 73 further cleans the excess bean seeds that cannot fall off in time, thereby avoiding the phenomenon of double seeds or multiple seeds in one hole.

[0042] When the bean seeds follow the sowing disc 21 and exceed the range of the seed protection brush 72, they will fall from the seed outlet 14 by themselves because there is no cover on the side. If the bean seeds are too large or the bean seed coating sticks to the bean seeds, the bean seeds cannot fall in time. The seed cleaning brush 73 will gradually clean the seeds in sequence, forcing the bean seeds to fall within the range of the seed outlet 14, and at the same time clean the open holes 22, and the debris in the open holes 22 will be discharged from the debris outlet 24.

[0043] More specifically, the rotating mounting structure 6 includes a rotating shaft 62 that is rotatably arranged in the shaft cylinder body 55 and has a split structure through a bearing 61, and at least one end of the rotating shaft 62 passes through a rotating hole 63 in the center of the seeding disc body 21. A seeding disc connecting seat 64 is provided between the seeding disc body 21 and the semi-bin cylinder portion 175, and the seeding disc connecting seat 64 is circumferentially positioned and connected to the seeding disc body 21 through an adjustable positioning component 8, and the seeding disc connecting seat 64 and the rotating shaft 62 are connected through a circumferential positioning component 9; the circumferential positioning component 9 includes a circumferential positioning component 9 provided on the seeding disc connecting seat 64 is centered and passes through the rotating hole 63, the rotating shaft 62 is passed through the seat body connecting sleeve 91, and the seat body connecting sleeve 91 is circumferentially positioned by the pin shaft 92 and the rotating shaft 62; the adjustable positioning assembly 8 includes connecting holes 81 at both ends of the seeding plate connecting seat 64, and the seeding plate body 21 is respectively provided with positioning holes 82 corresponding to the connecting holes 81, and the connecting hole 81 and the positioning hole 82 are connected by a positioning bolt 83, and a butterfly nut 84 threadedly connected to the positioning bolt 83 is provided on the side of the seeding plate body 21 away from the semi-bin cylinder 175. When there are too many debris in the seeder body 1, loosen the butterfly nut 84 on the outside of the sowing disc 21, remove the sowing disc 21, and install the sowing disc 21 and the screw nut 84 in the original position after fully cleaning the corresponding sowing bin 13; the open holes 22 on both sides of the seeder body 1 are evenly arranged in staggered positions within a 360-degree range of the circumference. When the sowing discs 21 on both sides rotate and work at the same time, the bean seeds on both sides fall at the same time and distance, and the positions where the bean seeds fall on both sides are evenly arranged at the same distance. When the bean seeds are too large within a certain range, causing holes or missing seeds, the butterfly nuts 84 can be rotated outward at the same distance at the same time to appropriately increase the distance between the sowing disc 21 and the brush assembly 7 to improve the use effect; when the diameters of the seed particles differ too much, the sowing discs 21 with holes of different sizes can be replaced to adapt to the sowing of round seeds of different crops.

[0044] like Figure 12-14As shown, the sowing drive mechanism 3 includes a fixed plate 31 for installing the sowing unit group 11, the fixed plate 31 is connected to the main beam 32 of the sowing device, and a transmission chain box 35 connected to the sowing main transmission shaft 33 and the transmission clutch 34 is provided on the fixed plate 31, and the transmission clutch 34 is connected to the rotating shaft 62 through a transmission pin 36; the sowing wheel assembly 16 includes a seeder ground wheel 161 arranged on both sides of the sowing unit group 11, and a furrowing disc 162 located below the seeder body 1 is provided between the seeder ground wheels 161, and the seed outlet 14 corresponds to the furrowing disc 162 through the seed sliding groove 163, and the furrowing disc 162 is formed on the circumferential outer side of the sowing depth limiting wheel 164, and the sowing depth limiting wheel 164 is connected to the fixed plate 31 through the profiling rod 165, the main beam 32 of the sowing device and the fixed plate 31, and a soil covering and pressing wheel 166 is provided on one side of the furrowing disc 162. The main body 1 of the seeder is installed in the sowing unit group 11, and the sowing unit group 11 is connected and fixed on the main beam 32 of the seeder through the fixing plate 31. The sowing main transmission shaft 33 transmits power to the transmission clutch 34 through the transmission chain box 35. The transmission clutch 34 drives the transmission pin 36 to provide rotational force to the main body 1 of the seeder, and the sowing disc 21 rotates accordingly. Among them, the sowing depth control of the bean seeds is realized by the comprehensive action of the profiling rod 165, the sowing depth limiting wheel 164, and the soil covering and pressing wheel 166.

[0045] To sum up, the principle of this embodiment is that when the device is working, the furrowing disc 162 first opens a seed furrow on the plot, and the bean seeds to be sown freely enter the seed storage chamber 41 in the seed box 15 by gravity, and are guided to the sowing bins 13 on both sides by the inclined seed guide structure 4. The bean seeds follow the rotation of the sowing disc 21 and the cooperation of the brush assembly 7 to be brought out of the sowing bin 13 and enter the seed chute 163 one by one. Due to the action of gravity, they fall into the seed furrow opened by the sowing wheel assembly 16, thereby realizing double seedling belt precision single-grain on-demand sowing.

[0046] Among them, the brush component 7 can not only prevent the occurrence of empty holes and missing seeds due to blockage of seed holes or untimely filling of seeds, but also can clean up debris in time, prevent the phenomenon of multiple seeds and double seeds caused by excessive pressure of bean seeds and untimely cleaning, and the sowing effect is good.

[0047] The transmission system of the whole machine is working. When the transmission clutch 34 is in a closed state, the rotating mounting structure 6 drives the seeding disc bodies 21 on both sides to rotate and sow. When the transmission clutch 34 is in a released state, the rotating mounting structure 6 and the seeding disc bodies 21 on both sides cannot follow the transmission system to work, and the seeder body 1 does not sow.

[0048] When the distance between the front and rear adjacent bean seeds is 5.5 cm, the sowing amount per hectare can reach 120 kg. When the operating speed of the seeder reaches 10 km per hour, on the sowing disc 21, it is about 75 revolutions per minute. Since the sowing disc 21 has 48 open holes 22 per circle, a single sowing disc 21 sows 1,800 seeds, i.e., 320 grams. The special seed-entering shape of the sowing disc 21 ensures that the sowing disc 21 can completely enter each open hole 22 during high-speed rotation, and the sowing efficiency is high. When the sowing disc 21 is replaced with open holes 22 of different sizes and numbers, round-grain crops of different types and sizes can be sown, and different distances and sowing amounts can be produced, and the replacement is convenient and quick.

[0049] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0050] Although this article uses more seeder body 1, sowing unit group 11, seed inlet 12, sowing bin 13, seed outlet 14, seed box 15, sowing wheel assembly 16, seeder ground wheel 161, furrowing disc 162, seed chute 163, sowing depth limit wheel 164, profiling rod 165, soil covering and pressing wheel 166, seeder shell 17, half bin body 171, sowing disc installation opening 172, sowing disc installation hole 173, seed inlet 174, half bin cylinder 175, half-bin hopper 176, outlet cylinder 177, outlet sealing plate 178, cylinder notch 179, seeding plate assembly 2, seeding plate body 21, open hole 22, seeding guide groove 23, debris outlet 24, seed retaining plate 25, recessed portion 26, reinforcing ring 27, reinforcing rib 28, seeding drive mechanism 3, fixing plate 31, seeding device main beam 32, seeding main transmission shaft 33, transmission clutch 34, transmission chain box 35, transmission pin 36, tilt Seed guiding structure 4, seed storage chamber 41, first inclined seed guiding assembly 42, seed feeding plate 421, vertical plate 422, inclined plate 423, horizontal portion 424, inclined seed guiding portion 425, second inclined seed guiding assembly 43, seed storage housing portion 431, inclined seed guiding surface 432, detachable splicing structure 5, reinforcing plate 51, connecting column 52, warehouse connecting hole 53, connecting bolt 54, shaft cylinder 55, rotating mounting structure 6, bearing 61, rotating shaft 62, rotating hole 63, seed tray connection seat 64, brush assembly 7, seeding brush 71, seed protection brush 72, seed cleaning brush 73, brush mounting plate 74, seeding notch 75, arc-shaped limiter 76, seed protection brush fixing ring 77, connecting bracket 78, adjustable positioning assembly 8, connecting hole 81, positioning hole 82, positioning bolt 83, butterfly nut 84, circumferential positioning assembly 9, seat body connecting sleeve 91, pin 92 and other terms, but the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A bean precision sowing device, comprising a sowing device body (1) mounted on a sowing unit group (11), a seed inlet (12) being provided at the upper end of the sowing device body (1), characterized in that: The seeder body (1) is provided with seeding disc assemblies (2) rotatably disposed on both sides thereof and arranged correspondingly to each other. The seeder body (1) is provided with two seeding bins (13) respectively located on the inner sides of the seeding disc assemblies (2) and both connected to the seed inlet (12). The seeder body (1) is provided with two seed outlets (14) respectively connected to the seeding bins (13) at the lower end thereof. The upper end of the seeder body (1) is provided with a seed box (15) connected to the seed inlet (12). The lower end of the seeder body (1) is provided with a seeding wheel assembly (16) connected to a seeding unit group (11). The seeding unit group (11) is provided with a seeding drive mechanism (3) for driving the two seeding disc assemblies (2) to rotate synchronously in a circumferential direction relative to the seeder body (1). The seeder body (1) comprises a seeder housing (17), and the seeder housing (17) is composed of two half bin bodies (171) assembled into a sowing wheel assembly (16). The half-bin body (171) is formed by combining two half-bin bodies (171), one side of the half-bin body (171) away from the other half-bin body (171) respectively having an annular seed tray installation opening (172), and a seed tray installation hole (173) penetrating the two half-bin bodies (171) and located at the center of the seed tray installation opening (172) is provided between the two half-bin bodies (171); one side of the lower end of the half-bin body (171) respectively has seed inlets (174) arranged corresponding to each other and capable of connecting the seed inlet (12) and the seed bin (13) respectively, and an inclined seed guide structure (4) is provided between the seed inlet (174) and the seed inlet (12) on the side away from the seed bin (13); the seed outlet (14) is arranged on the other side of the lower end of the half-bin body (171) and extends downward and is staggered with the seed inlet (12); the half-bin body (171) comprises a half-bin cylinder portion (175) having an open end and a closed end;The seeding tray assembly (2) comprises a seeding tray body (21) which is arranged at a seeding tray installation opening (172) through a rotating installation structure (6) and can seal the outer side of a seeding bin (13); a plurality of open holes (22) are arranged on the circumferential outer edge of the seeding tray body (21) and radially extending on one side of the seeding tray body (21) near the semi-bin cylinder (175); a plurality of seed insertion guide grooves (23) are arranged on the circumferential outer side of the seeding tray body (21) and are arranged in an inclined manner in a direction opposite to the rotation direction of the seeding tray body (21) and are respectively connected to the open holes (22); the open holes (22) on the seeding tray on both sides of the seeder housing (17) correspond to each other or are arranged in a circumferentially staggered manner; ) has a debris outlet (24) formed on the circumferential outer edge of the sowing disc body (21) at one end away from the seed entry guide groove (23); a brush assembly (7) corresponding to the seed entry guide groove (23) and the open hole (22) is fixedly provided on the inner side of the semi-silo cylinder (175); a seed retaining plate (25) is provided on one side of the brush assembly (7) and is obliquely arranged on the inner side of the upper end of the sowing device housing (17); one end of the seed retaining plate (25) extends to the outer side of one end of the seed entry guide groove (23) away from the open hole (22), and the other end extends to the outer side of the open hole (22); a recessed portion (26) is provided on the side of the sowing disc away from the semi-silo cylinder (175), and a plurality of concentric reinforcing A ring (27), a plurality of reinforcing ribs (28) are arranged between the reinforcing rings (27), and the reinforcing ribs (28) extend in the radial direction of the seeding disc body (21), and the reinforcing rings (27) and the reinforcing ribs (28) are flush with the circumferential outer side of the seeding disc body (21); the brush assembly (7) and the seed retaining plate (25) are respectively located in the seeding bin (13), and the brush assembly (7) comprises a seeding brush (71), a seed protecting brush (72) and a seed cleaning brush (73) which are alternately distributed or adjacently arranged along the circumferential outer side of the seeding disc body (21), the seeding brush (71) is arranged obliquely on one side of the seeding port (174), and the seed protecting brush (72) is arc-shaped and is opposite to the open hole (22). The seed cleaning brush (73) is arc-shaped and inclined, and one end of the seed cleaning brush (73) is located between the seed blocking plate (25) and the seed protecting brush (72), and the other end extends to one side of the upper end of the seed outlet (14); a brush mounting plate (74) is provided on the inner side of the semi-bin cylinder (175), and the brush mounting plate (74) has a seed entry notch (75) corresponding to the seed entry port (174); the seed entry brush (71) and the seed cleaning brush (73) are respectively arranged on the brush mounting plate (74), and the outer side of the brush mounting plate (74) has an arc-shaped limiting portion (76) located between the seed entry brush (71) and the seed cleaning brush (73) and corresponding to the outer side of the seeding disc (21) in the circumferential direction;The upper inner end of the semi-bin cylinder (175) is provided with an arc-shaped seed protection brush fixing ring (77) corresponding to the outer circumferential side of the seeding disc (21), and the arc-shaped limiting portion (76) is arranged on the inner side of one end of the seed protection brush fixing ring (77), the seed protection brush (72) is arranged on the inner side of the other end of the seed protection brush fixing ring (77), and the seed outlet (14) is arranged between the two ends of the seed protection brush fixing ring (77); the seed retaining plate (25) is arranged on the seed protection brush fixing ring (77) through the connecting bracket (78). The ring (77) is circumferentially arranged inwardly, and one end of the seed retaining plate (25) extends to the seed protection brush (72), and the other end extends to the seed cleaning brush (73) away from the seed protection brush (72); the rotating mounting structure (6) comprises a rotating shaft (62) which is rotatably arranged in the shaft cylinder (55) through a bearing (61) and has a split structure, at least one end of the rotating shaft (62) passes through a rotating hole (63) in the center of the seeding disc body (21), and a rotating shaft (62) is arranged between the seeding disc body (21) and the semi-bin cylinder part (175). A seeding plate connecting seat (64) is provided, and the seeding plate connecting seat (64) is connected to the seeding plate body (21) in a circumferential positioning manner through an adjustable positioning component (8), and the seeding plate connecting seat (64) and the rotating shaft (62) are connected through a circumferential positioning component (9); the circumferential positioning component (9) comprises a seat body connecting sleeve (91) arranged at the center of the seeding plate connecting seat (64) and passing through the rotating hole (63), the rotating shaft (62) passing through the seat body connecting sleeve (91), and the seat body connecting sleeve (91) is connected to the seeding plate body (21) through the circumferential positioning component (9). 1) Circumferential positioning through a pin shaft (92) and a rotating shaft (62); the adjustable positioning assembly (8) comprises connecting holes (81) at both ends of a seeding plate connecting seat (64); positioning holes (82) corresponding to the connecting holes (81) are respectively provided on the seeding plate body (21); the connecting holes (81) and the positioning holes (82) are connected through positioning bolts (83); and a butterfly nut (84) threadedly connected to the positioning bolt (83) is provided on the side of the seeding plate body (21) away from the semi-bin cylinder portion (175). ; 2. The bean precision seeding device according to claim 1, characterized in that: The closed end of the half-bin cylinder (175) is provided with a half-bin hopper (176). When the half-bin hoppers (176) of the two half-bin bodies (171) are assembled together, the seed inlet (12) is formed between the upper ends of the two half-bin hoppers (176), and the inclined seed guide structure (4) is formed between the lower ends of the two half-bin hoppers (176). The seed tray mounting opening (172) is formed at the opening of the half-bin cylinder (175), and the seed bin (13) is formed on the inner side of the half-bin cylinder (175). The seed inlet (174) is formed at the closed end of the half-silo barrel (175), and the seed outlet (14) is formed on the circumferential outer side of the half-silo barrel (175); the circumferential outer side of the half-silo barrel (175) has an outlet barrel (177) connected to the half-silo barrel (175), and one side of the outlet barrel (177) is closed by an outlet sealing plate (178); the seed outlet (14) is formed on the circumferential inner side of the outlet barrel (177), and the upper end of the seed outlet (14) is connected to the barrel on the circumferential outer side of the half-silo barrel (175). The two half-bin bodies (171) are connected via a detachable splicing structure (5), wherein the detachable splicing structure (5) comprises a reinforcing plate (51) arranged on one side of the half-bin hopper part (176) and connected to the outer side of the closed end of the half-bin cylinder part (175), and the reinforcing plate (51), the outer side of the closed end of the half-bin cylinder part (175) and / or the half-bin hopper part (176) are respectively provided with connecting columns (52), and the connecting columns (52) respectively have a bin body connecting member that penetrates the closed end of the half-bin cylinder part (175). The storage body connecting holes (53) are formed on the two half storage bodies (171), and the storage body connecting holes (53) on the two half storage bodies (171) correspond to each other and are connected by connecting bolts (54); a shaft cylinder body (55) is provided at the center of the closed end of the half storage cylinder part (175), and one end of the shaft cylinder body (55) extends into the sowing storage bin (13), and the other end extends to the center of the half storage hopper part (176); the sowing plate mounting hole (173) is formed on the inner side of the shaft cylinder body (55) in the circumferential direction, and when the two half storage bodies (171) are assembled with each other, the shaft cylinder bodies (55) are butted and connected with each other.

3. The bean precision seeding device according to claim 2, characterized in that: The inclined seed guiding structure (4) comprises a seed storage chamber (41) arranged at the lower end of the half-bin hopper portion (176) and corresponding to the seed inlet (174); the seed storage chamber (41) is connected to the seed inlet (12) via a first inclined seed guiding component (42); the seed storage chamber (41) is connected to the seed inlet (174) via a second inclined seed guiding component (43); the first inclined seed guiding component (42) comprises a seed inlet plate (421) arranged vertically and facing one side of the half-bin cylinder portion (175); one side of the seed inlet plate (421) is provided with a vertical plate (422) arranged vertically, and the other side is provided with an inclined plate (423) arranged obliquely, and the vertical plates (422) and the inclined plates (423) of the two half-bin hopper portions (176) correspond one to one to form the above-mentioned The seed inlet (12) is provided with a horizontal portion (424) at the lower end of the vertical plate (422), and an inclined seed guide portion (425) connected to the seed storage chamber (41) is provided on one side of the horizontal portion (424); the second inclined seed guide assembly (43) comprises a seed storage shell portion (431) having two ends respectively connected to the inclined seed guide portion (425) and the inclined plate (423); the seed storage chamber (41) forms the inner side of the seed storage shell portion (431) in the circumferential direction, and the seed inlet (174) is formed on one side of the seed storage shell portion (431); the lower end of the seed storage shell portion (431) has an inclined seed guide surface (432) inclined toward the seed inlet (174), and the inclined seed guide surfaces (432) of the two half-bin hopper portions (176) are arranged in an inverted V shape.

4. The bean precision seeding device according to claim 3, characterized in that: The sowing drive mechanism (3) comprises a fixing plate (31) for mounting a sowing unit group (11), the fixing plate (31) being connected to a main beam (32) of a sowing device, the fixing plate (31) being provided with a transmission chain box (35) connected to a sowing main transmission shaft (33) and a transmission clutch (34), the transmission clutch (34) being connected to a rotating shaft (62) via a transmission pin (36); the sowing wheel assembly (16) comprising a sowing machine ground wheel (16) arranged on both sides of the sowing unit group (11) 161), a furrowing disc (162) located below the seeder body (1) is provided between the ground wheels (161) of the seeder, the seed outlet (14) corresponds to the furrowing disc (162) through a seed chute (163), the furrowing disc (162) is formed on the circumferential outer side of the sowing depth limiting wheel (164), and the sowing depth limiting wheel (164) is connected to the seeder main beam (32) through a contoured rod (165), and a soil covering and pressing wheel (166) is provided on one side of the furrowing disc (162).

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