Vibration type seed metering device and seed metering method of soybean / corn high-speed precision seeder

Abstract

The invention relates to a vibration type seed metering device and a seed metering method of a soybean / corn high-speed precision seeder. The seed metering device comprises a seed supply device, a vibration type seed metering device (1) and a seed receiving pneumatic delivery device (2), the seed supply device is installed above the vibration type seed metering device (1), the seed receiving pneumatic delivery device (2) is installed below the vibration type seed metering device (1), and the seed metering device is characterized in that the vibration type seed metering device (1) comprises a vibration type seed metering device vibration unit (12) and a vibration type seed metering device vibration unit (12), the vibration type seed-metering device vibration unit (12) is connected with the vibration assembly, and the vibration assembly is used for driving the vibration type seed-metering device vibration unit (12) to vibrate. According to the vibration type seed metering device, the vibration principle is adopted, so that seeds are uniformly and orderly separated from a population, and the seeds are tightly moved; and the seeding quality can be improved by methods of seed secondary error elimination, airflow delivery bulletproof and the like.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a vibrating seeding device and a seeding method for a soybean / corn high-speed precision seeder. Background Art

[0002] Soybeans and corn are important food and feed crops with extensive economic and social value. As a traditional agricultural country, the yield and quality of soybeans and corn are directly related to my country's food security and the development of the agricultural industry. Soybeans are an important oil crop and protein source in my country, and corn economic products cover the three major industries. With the characteristics of wide coverage and long industrial chain extension, soybeans / corn have become the most strategically significant food crops. In addition to being affected by seed quality and advanced cultivation technology, sowing quality is also an important influencing factor for soybean / corn yield. Uniform sowing spacing can reduce crop competition for water, nutrients, light and heat, improve the utilization rate of soil moisture and nutrients, and thus increase yield.

[0003] my country's agricultural production is gradually developing in the direction of scale, and high speed and high efficiency are the development trends. High-speed soybean / corn precision seeders are the main development direction, especially in the black soil region of Northeast my country, where the land is vast and the demand for high-efficiency seeding machinery is more urgent. As the operation speed increases, the rotation speed of the seeding disc is too high, the friction and collision between seed populations during seed filling increases, and the seed filling time is greatly shortened, the missed seeding rate increases, and the collision between seeds and seed guide tubes during seeding and the bounce of seeds falling into the seed bed increase, resulting in the common problems of high missed seeding rate and poor uniformity of plant spacing in high-speed operation of seeders. Summary of the invention

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a vibrating seeding device for soybean / corn high-speed precision seeder. The vibrating seeding device adopts the vibration principle to achieve uniform and orderly separation of seeds from the seed population, so that the seeds can be transported closely and at high speed, and the seeds can be separated at high speed and uniformly and orderly; the seeding quality can also be improved by eliminating seed secondary errors, airflow delivery and bulletproofing, and other methods.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A vibrating seeding device for a soybean / corn high-speed precision seeder comprises a seed supply device, a vibrating seeding device 1 and a seed receiving and pneumatic delivery device 2, wherein the seed supply device is installed above the vibrating seeding device 1, and the seed receiving and pneumatic delivery device 2 is installed below the vibrating seeding device 1, characterized in that the vibrating seeding device 1 comprises: a vibrating seeding device vibration unit 12, the vibrating seeding device vibration unit 12 is connected to a vibration component, and the vibration component is used to drive the vibrating seeding device vibration unit 12 to vibrate;

[0007] When the vibration unit 12 of the vibrating seed metering device vibrates, the seeds are separated and discretized from the seed population, and transported uniformly and orderly from the bottom of the vibrating seed metering device 1 to the top; then the seed posture is adjusted to be uniform through the seed restraining device 123 of the vibrating seed metering device installed on the top of the vibrating seed metering device 1;

[0008] The seed receiving and pneumatic delivery device 2 is used to receive the seeds output from the vibrating seed metering device 1 and accelerate the seeds out of the vibrating seed metering device by using positive pressure airflow.

[0009] On the basis of the above scheme,

[0010] The vibration unit 12 of the vibrating seed metering device includes a vibrating seed metering device seeding tube 121; the vibrating seed metering device seeding tube 121 is arranged inside the vibrating seed metering device 1, and is divided into a seed filling section 121a, a seed population separation section 121b, and a seed posture adjustment straight section 121c from the bottom to the top of the vibrating seed metering device 1; the seed posture adjustment straight section 121c is connected to the seed restraint device 123 of the vibrating seed metering device;

[0011] The seed metering tube 121 of the seed metering device is used to transport seeds from the lower part of the vibrating seed metering device 1 to the upper part of the vibrating seed metering device 1 in a uniform and orderly manner through vibration under the drive of the vibration component; the seed filling section 121a is used to receive seeds provided by the seed supply device, the seed population separation section 121b is used to separate seeds from the seed population and arrange them uniformly and orderly, and the seed posture adjustment straight section 121c is used to adjust the seed posture together with the seed restraint device 123 of the vibrating seed metering device.

[0012] On the basis of the above scheme,

[0013] The seeding tube 121 of the seeding device is provided with a seed dropping section 121d behind the seed posture adjustment straight section 121c. The seed dropping section 121d is provided with a photosensitive sensor 124, and the photosensitive sensor 124 is used to collect the seed dropping frequency.

[0014] On the basis of the above scheme,

[0015] The seed restraining device 123 of the vibrating seed metering device is provided with a seed posture adjustment swing rod 123c, one end of which is movably connected to the seed restraining device 123 of the vibrating seed metering device, and the other end of the seed posture adjustment swing rod 123c is an adjustable end, and the adjustable end can swing up and down in the vertical direction; the seed posture adjustment swing rod 123c is provided with a plurality of seed posture top wheels 123d;

[0016] When the seeds pass through the seed posture top wheel 123d, they are constrained by the seed posture adjustment rod 123c. Multiple seed posture top wheels 123d can move the seeds that are not in a flat position, so that the seed flow maintains consistency in posture.

[0017] On the basis of the above scheme,

[0018] The seed restraining device 123 of the vibrating seed metering device is provided with a posture adaption adjustment plate 123e at the adjustable end of the seed posture adjustment swing rod 123c, and the posture adaption adjustment plate 123e is used to adjust the swing angle of the adjustable end of the seed posture adjustment swing rod 123c to meet the needs of different seeds.

[0019] On the basis of the above scheme,

[0020] The seed receiving and pneumatic delivery device 2 includes a seed receiving and pneumatic accelerator 27, and a seed receiving and dropping device is provided on the upper part of the seed receiving and pneumatic accelerator 27, and the seed receiving and dropping device is used to receive and drop single seeds in sequence; a positive pressure acceleration device is provided on the lower part of the seed receiving and pneumatic accelerator 27, and the positive pressure acceleration device is used to accelerate the single seed dropped by the seed receiving and dropping device using a positive pressure airflow, so as to accelerate the seed and eject it out of the vibrating seeding device.

[0021] On the basis of the above scheme,

[0022] The seed receiving and dropping device includes an electromagnetic push rod 21, at the end of which is a seed receiving plate 28; the seed receiving plate 28 can reciprocate under the drive of the electromagnetic push rod 21, and is used to receive and drop the seeds discharged by the vibrating seed metering device 1 in a single-grain manner.

[0023] On the basis of the above scheme,

[0024] The positive pressure acceleration device includes a stable positive pressure air chamber 27d; the stable positive pressure air chamber 27d receives positive pressure gas to form a stable positive pressure cavity, and introduces the positive pressure gas into the seed acceleration airway 27g to accelerate the seeds.

[0025] On the basis of the above scheme,

[0026] The seed accelerating airway 27g is an annular airway surrounding the seed falling channel and connected to the seed falling channel; the annular airway can reduce the collision between the seeds and the inner wall of the falling channel due to uneven airflow.

[0027] Another object of the present invention is to provide a soybean / corn vibration seeding method.

[0028] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0029] A soybean / corn vibration seeding method, characterized by comprising the following steps:

[0030] Step 1, pouring seeds into the seed supply device, the seeds fall through the seed supply device and accumulate at the bottom of the vibration unit 12 of the vibrating seed metering device;

[0031] Step 2, turn on the vibration assembly installed on the vibration unit 12 of the vibration seed metering device, and the seeds enter the seeding tube 121 of the vibration seed metering device under vibration, and move evenly and orderly along the seeding tube 121 of the vibration seed metering device to the upper part of the vibration unit 12 of the seed metering device; the vibration frequency of the vibration assembly can be adjusted according to the type of seeds, so that the movement and falling speed of the seeds meets the agronomic requirements of the seed sowing speed and the spacing between plants, and the falling frequency of the seeds in the seed dropping section 121d and the receiving and dropping frequency of the seed receiving and dropping device should match the seed dropping frequency generated by the vibration frequency of the vibration assembly, wherein the seed dropping frequency should be detected by the photosensitive sensor 124;

[0032] Step 3, when the seeds reach the vibrating seed metering device seed posture constraint device 123 on the upper part of the seed metering device vibration unit 12, they are adjusted to a uniform posture under the constraint of the vibrating seed metering device seed posture constraint device 123, and then discharged into the seed receiving pneumatic acceleration member 27 through the seed dropping section 121d;

[0033] Step 4, the seeds are sequentially received and dropped into the positive pressure acceleration device in the seed receiving and dropping device of the seed receiving pneumatic acceleration member 27. In the process of the seeds being received and dropped in an orderly manner, the time difference of the seeds dropping can be eliminated, so that the dropped seeds are uniform and orderly.

[0034] Step 5, after the seeds are accelerated by the positive pressure airflow in the positive pressure acceleration device, they are ejected out of the vibrating seeding device; by setting the seed guide bend 25, the horizontal speed of the seeds ejected out of the vibrating seeding device can be made the same as the forward speed of the seeder, achieving "zero-speed implantation" to ensure seed uniformity.

[0035] The vibrating seeding device and seeding method of a soybean / corn high-speed precision seeder described in the present invention have the following beneficial effects:

[0036] The vibrating seeding device provided by the present invention adopts the vibration principle to improve the efficiency of separating seeds from the population, eliminates the errors caused by seed differences through the two processes of posture adjustment and receiving and re-seeding, realizes "zero-speed implantation" through pneumatic delivery, and improves the sowing quality during high-speed operation.

[0037] The seeding device can accurately control the speed of seeds by adjusting the vibration frequency and amplitude, so that the seeds can be accurately placed even when operating at high speed, greatly reducing missed seeds and repeated seeds and increasing seeding uniformity.

[0038] By detecting the seed movement speed and interval in real time and accurately controlling the vibration frequency and amplitude, higher seeding accuracy and stability are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention has the following accompanying drawings:

[0040] Figure 1 This is a schematic diagram of the appearance of the vibrating seeding device of the soybean / corn high-speed precision seeder of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of the vibrating seed metering device of the soybean / corn high-speed planter of the present invention;

[0042] Figure 3 It is a schematic diagram of the structure of the vibration unit of the vibrating seed metering device;

[0043] Figure 4 This is a schematic diagram of the structure of the seeding tube of the vibrating seeding device;

[0044] Figure 5 It is a structural schematic diagram of a seed posture restraining device of a vibrating seed metering device;

[0045] Figure 6 This is the working principle diagram of the seed posture constraint device;

[0046] Figure 7 This is a schematic diagram of a pneumatic seed delivery device;

[0047] Figure 8 This is the structural diagram of the pneumatic acceleration component for seeds.

[0048] In the figure:

[0049] 1. Vibrating seed metering device; 2. Seed receiving pneumatic delivery device; 3. Seed box; 4. Seeds;

[0050] 11. Seed box mounting parts; 12. Vibration unit of vibrating seed metering device; 13. Vibration source connection plate; 14. Seed metering device mounting housing; 15. Seed metering device mounting ears; 16. Vibration generator;

[0051] 121. Seed tube of vibrating seed metering device; 122. Seed filling shell of vibrating seed metering device; 123. Seed posture restraint device of vibrating seed metering device; 124. Photosensitive sensor; 125. Bottom plate of vibrating seed metering device;

[0052] 121a, seed filling section; 121b, seed population separation section; 121c, seed posture adjustment straight section; 121d, seed placement section;

[0053] 123a, seed posture adjustment fastening shell; 123b, hinged ear; 123c, seed posture adjustment swing rod; 123d, seed posture top wheel; 123e, posture adaptation adjustment plate; 123f, fixed welding plate;

[0054] 21. Electromagnetic push rod; 22. Air pump; 23. Seed dropping device mounting plate; 24. Air pipe; 25. Seed guide elbow; 26. Stable seed guide straight pipe; 27. Seed receiving pneumatic acceleration part; 28. Seed receiving plate;

[0055] 27a, seed entrance; 27b, electromagnetic telescopic rod installation position; 27c, seed receiving slot; 27d, stable positive pressure air chamber; 27e, air source entrance; 27f, seed guide tube installation position; 27g, seed acceleration airway;

[0056] 31. Seed stacking tube. DETAILED DESCRIPTION

[0057] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0058] The vibrating seeding device mainly uses the vibration principle to orderly separate disordered seeds from the population. The entire seeding process mainly includes three links: seed filling, seed transportation, and seed throwing. During seed filling, the seeds are discretized and evenly move around and enter the seeding tube with the help of the vibration of the seeding body. The seeds entering the seeding tube are driven by the vibration of the vibration unit to move quickly and orderly along the seeding tube to complete the seed transportation link. During the transportation process, a seed posture constraint device can be added according to factors such as seed shape to make the seed movement posture consistent and reduce the impact of seed differences on sowing uniformity. The seeds leave the vibration unit and enter the seed throwing link. During seed throwing, in order to further improve the uniformity of the seed spacing, a secondary receiving and feeding device and an air chamber positive pressure auxiliary seed feeding device are added to the seed delivery link. Specifically:

[0059] like Figure 1 As shown, the vibrating seeding device of the soybean / corn high-speed precision seeder includes a vibrating seeding device 1, a seed receiving and pneumatic delivery device 2, and a seed box 3. Seeds are added from the seed box 3, and the vibrating seeding device 1 is responsible for discreetly separating the seed population and evenly separating the single seeds, and then the seed receiving and pneumatic delivery device 2 further reduces the influence of seed shape and size differences, and sows the seeds accurately and stably into the seed bed.

[0060] like Figure 2 As shown, the vibrating seed metering device 1 mainly includes a seed box mounting member 11, a vibrating seed metering device vibration unit 12, a vibration source connecting plate 13, a seed metering device mounting shell 14, a seed metering device mounting ear 15, and a vibration generator 16.

[0061] The seed box 3 is a seed supply device, which is fixed on the seed box mounting member 11. The seed accumulation pipe 31 is installed at the seed outlet position below the seed box 3 and is responsible for guiding the seeds to the seed filling area at the bottom of the vibration unit 12 of the vibrating seed metering device.

[0062] The seeding device mounting shell 14 is the main support bracket and the main mounting frame of the entire seeding device. Two seeding device mounting ears 15 are welded on the seeding device mounting shell 14, and the seeding device can be mounted on the frame of the soybean / corn planter sowing unit through the seeding device mounting ears 15.

[0063] The seed box mounting member 11 is mounted above the seeding device mounting housing 14, and plays a supporting role for the upper seed box 3 and a sealing role for the seeding device.

[0064] The vibration assembly includes a vibration generator 16 and a vibration source connecting plate 13. The vibration generator 16 is the vibration source of the vibrating seed metering device 1 and can generate vibrations with a certain frequency and amplitude. The vibration generator 16 is fixed to the bottom of the seed metering device mounting shell 14.

[0065] The vibration unit 12 of the vibrating seed metering device is the core part of the vibrating seed metering device 1 and is also the executive component for realizing the orderly separation function of seeds. A vibration source connecting disk 13 is installed on the vibrating seed metering device bottom plate 125 of the vibrating seed metering device vibration unit 12, and the vibration source connecting disk 13 is fixedly installed on the vibration output shaft of the vibration generator 16 below.

[0066] like Figure 3 As shown, the vibration unit 12 of the vibrating seed metering device is composed of a vibrating seed metering device seeding tube 121, a vibrating seed metering device seed filling shell 122, a vibrating seed metering device seed posture restraint device 123, a photosensitive sensor 124, and a vibrating seed metering device bottom plate 125.

[0067] like Figure 2 , 4 As shown, the seeding tube 121 of the vibrating seed metering device is spirally arranged inside the vibrating seed metering device 1, and mainly includes four parts: a seed filling section 121a, a seed population separation section 121b, a seed posture adjustment straight section 121c, and a seed dropping section 121d.

[0068] The vibrating seed metering bottom plate 125 is a vibration transmission and support component of the vibrating unit 12 of the vibrating seed metering device. The vibrating seed metering device seeding tube 121 and the vibrating seed metering device seed filling shell 122 are welded to the vibrating seed metering bottom plate 125 .

[0069] The area enclosed by the seed filling section 121a, the vibrating seed metering device seed filling shell 122 and the vibrating seed metering device bottom plate 125 together constitute the seed filling area. The seed discharge tube 121a of the seed filling section is cut off in half along the middle section to facilitate the entry of the seed population into the vibrating seed metering device seed discharge tube 121.

[0070] The seed attitude restraining device 123 of the vibrating seed metering device is fixed to the seed attitude adjusting straight section 121c of the seeding tube 121 of the vibrating seed metering device by using a bolt clamping structure. The seed attitude adjusting straight section 121c has a long slot hole so that the seed attitude top wheel 123d of the seed attitude restraining device 123 of the vibrating seed metering device can extend into the seeding tube.

[0071] A photosensitive sensor 124 is installed on the seed dropping section 121d of the seeding tube 121 of the vibrating seeding device to collect the seed dropping frequency.

[0072] like Figure 5 As shown, the seed posture restraining device 123 of the vibrating seed metering device mainly includes a seed posture adjustment fastening shell 123a, a hinge ear 123b, a seed posture adjustment rocker 123c, a seed posture top wheel 123d, a posture adaptation adjustment plate 123e, and a fixed welding plate 123f.

[0073] The seed posture adjustment fastening shell 123a adopts an open structure, and can be clamped on the seed posture adjustment straight section 121c by fastening bolts. A hinge ear 123b and a fixed welding plate 123f are welded on the seed posture adjustment fastening shell 123a.

[0074] Eight seed attitude top wheels 123d are installed on the seed attitude adjustment rocker 123c. One end (connecting end) of the seed attitude adjustment rocker 123c is hinged to the hinge ear 123b, and can swing along the circular hole of the hinge ear 123b as the center of the circle. The other end (adjustable end) is welded with a posture adaptation adjustment plate 123e. The posture adaptation adjustment plate 123e has a long arc groove, which can adjust and fix the fixed installation position of the welding plate 123f, and further adjust the angle of the seed attitude adjustment rocker 123c so that the arrangement of the seed attitude top wheels 123d forms a certain angle with the seed movement direction. At the same time, the angle range of the swing of the free end of the seed attitude adjustment rod 123c can be set.

[0075] The working principle of the seed posture restraint device is as follows Figure 6 As shown, before the seeds pass through the seed posture adjustment straight section 121c, the seeds move forward in an orderly manner with different postures. If the seed postures are not unified at this time, there will be a time difference when the seeds fall, which reduces the uniformity of the seeds. When the seeds pass through the seed posture constraint device 123, one side of the seeds moving "horizontally" in the pipeline contacts the seed posture top wheel 123d, and under the constraint of the seed posture top wheel 123d, the seeds tilt backward and finally "stand upright" in the pipeline. Due to the differences in the sizes of different types of seeds, when the seed posture adjustment effect cannot meet the requirements, the position of the seed posture adjustment swing rod 123c can be adjusted by adjusting the position of the posture adaptation adjustment plate 123e, so that the seed posture top wheel 123d can effectively adjust the seed posture.

[0076] like Figure 7 As shown, the seed receiving pneumatic delivery device 2 includes an electromagnetic push rod 21, an air pump 22, a seed delivery device mounting plate 23, an air pipe 24, a seed guide curved pipe 25, a stable seed guide straight pipe 26, a seed receiving pneumatic acceleration member 27, and a seed receiving plate 28.

[0077] like Figure 8 As shown, the seed receiving pneumatic acceleration component 27 includes a seed inlet 27a, an electromagnetic telescopic rod installation position 27b, a seed receiving slot 27c, a stable positive pressure air chamber 27d, an air source inlet 27e, a seed guide tube installation position 27f, and a seed acceleration airway 27g.

[0078] The seed receiving and dropping device includes an electromagnetic push rod 21 and a seed receiving plate 28; the positive pressure acceleration device includes a stable positive pressure air chamber 27d and a seed accelerating airway 27g.

[0079] The seeding device mounting plate 23 is a connecting piece for fixing the seeding device on the vibrating seeding device, which is installed on the bottom surface of the seeding device mounting shell 14. An air pump 22 and a seed receiving pneumatic acceleration member 27 are installed on the seeding device mounting plate 23. The air pump outlet 22 is connected to an air pipe 24, and the other side of the air pipe 24 is connected to the air source inlet 27e, which sends the positive pressure airflow to the stable positive pressure air chamber 27d, and forms a stable positive pressure cavity in the stable positive pressure air chamber 27d. The gas in the stable positive pressure air chamber 27d is accelerated along the seed acceleration airway 27g and flows into the seed receiving inoculation tube 27h. The seed acceleration airway 27g adopts a ring design. When the airflow enters the seed receiving inoculation tube 27h, it flows from the surrounding pipe walls to the lower side, which can prevent the seeds from colliding with the pipe walls during acceleration.

[0080] An electromagnetic push rod 21 is installed at the electromagnetic telescopic rod installation position 27b, and a seed receiving plate 28 is welded to the rod end of the electromagnetic push rod 21. The seed receiving plate 28 matches the seed receiving slot 27c. During operation, the seed receiving plate 28 reciprocates in the seed receiving slot 27c. The electromagnetic push rod adopts a normal push-out design 21 to ensure that the electromagnetic receiving plate 28 can always be inserted in the seed receiving slot 27c to receive the seeds entering from the seed entrance 27a. When the electromagnetic push rod 21 is energized, the electromagnetic push rod 21 retracts, and the seeds fall from the receiving plate 28, ensuring that the speed of the seeds at this time is zero, so that the delivery timing of each seed is the same, and the consistency of the initial delivery state is guaranteed.

[0081] A stable seed guide straight tube 26 is installed at the seed guide tube installation position 27f, and a seed guide bent tube 25 is welded to the other end of the stable seed guide straight tube 26. The direction of the seed guide bent tube 25 is opposite to the driving direction of the seeder, ensuring that the driving speed of the seeder can be offset when the seeds are ejected, achieving "zero-speed implantation".

[0082] The vibration parameters of the vibration generator 16, the working frequency of the electromagnetic push rod 21, and the air pressure of the air pump 22 in the vibrating seeding device need to be adjusted in real time according to the different operating speeds of the seeding machine. The specific adjustment process is as follows:

[0083] During operation, according to the driving speed fed back by the tractor and the set sowing seed distance, the system automatically calculates the vibration parameters of the vibration generator 16, the working frequency of the electromagnetic push rod 21, and the air pressure of the air pump 22 and feeds them back to the three actuators. The photosensitive sensor 124 detects the frequency and time of seed falling at this position. When the seed falling speed does not match the driving speed, the vibration parameters of the vibration generator 16 can be adjusted in real time to ensure that the seed falling frequency matches the driving speed. At the same time, the working phase difference between the seed and the electromagnetic push rod 21 is detected in real time. When the phase does not match, the working phase of the electromagnetic push rod 21 is adjusted in real time to ensure that each seed falls on the seed receiving plate 28, so that the seed speed is reset to zero.

[0084] Before work, pour the seeds into the seed box 3, and adjust the position of the seed posture top wheel 123d in the seed posture constraint device 123 of the vibrating seed metering device according to the basic parameters of the seeds to make it adapt to the seeds. If the requirements are not met during work, it can be adjusted in time.

[0085] During operation, the vibration signal generated by the vibration generator 16 is transmitted to the vibration unit 12 of the vibrating seed metering device through the vibration source connection plate 13. The seeds in the seed box 3 fall into the seed filling area of ​​the vibration unit 12 of the vibrating seed metering device along the seed accumulation tube 31. The seeds are dispersed around and enter the seed filling section 121a of the seed tube 121 of the vibrating seed metering device under the action of their own gravity and vibration. Under the action of vibration, the seeds move upward along the seed tube, and then enter the seed population separation section 121b. After separation, the seeds move evenly and orderly in the seed tube. When reaching the seed posture adjustment straight section 121c, under the constraint of the seed posture constraint device 123 of the vibrating seed metering device, the seeds all move in a "vertical" posture and fall evenly and orderly from the seed drop section 121d. After data collection by the photosensitive sensor 124, the seeds fall into the seed inlet 27a of the seed receiving pneumatic acceleration member 27, and the seeds fall along the seed receiving tube 27h under the action of gravity. In order to eliminate the influence of factors such as seed size differences, when the seeds reach the seed receiving slot 27c, they are received by the seed receiving plate 28 to make their vertical speed zero. Under the action of the electromagnetic push rod 21, the seed receiving plate 28 retracts, and the seeds fall vertically with an initial speed of zero. When they reach the seed acceleration airway 27g, they begin to be affected by the acceleration effect of the airflow. The seeds accelerate under the combined action of gravity and the airflow generated by the air pump 22 after being transported through the air pipe 24 and stabilized by the positive pressure chamber 27d. The seeds are stably accelerated in the stable seed guide straight pipe 26, and change direction under the constraint of the seed guide bend pipe 25, so that the horizontal speed of the seeds is the same as the forward speed of the seeder when leaving the seed guide bend pipe 25, achieving "zero-speed implantation" to ensure seed uniformity.

[0086] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A vibrating seeding device for a soybean / corn high-speed precision seeder, comprising a seed supply device, a vibrating seeding device (1) and a seed receiving and pneumatic delivery device (2), wherein the seed supply device is installed above the vibrating seeding device (1), and the seed receiving and pneumatic delivery device (2) is installed below the vibrating seeding device (1), characterized in that: The vibrating seed metering device (1) comprises: a vibrating seed metering device vibration unit (12), the vibrating seed metering device vibration unit (12) is connected to a vibration component, and the vibration component is used to drive the vibrating seed metering device vibration unit (12) to vibrate; The vibrating unit (12) of the vibrating seed metering device separates and discretizes the seeds from the seed population when vibrating, and transports the seeds from the bottom of the vibrating seed metering device (1) to the top in a uniform and orderly manner; then the seed posture is adjusted to be uniform by the vibrating seed metering device seed restraint device (123) installed on the top of the vibrating seed metering device (1); The seed receiving pneumatic delivery device (2) is used to receive the seeds output from the vibrating seed metering device (1) and utilize positive pressure airflow to accelerate the seeds and eject them out of the vibrating seed metering device.

2. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 1, characterized in that: The vibration unit (12) of the vibrating seed metering device comprises a seed discharging tube (121) of the vibrating seed metering device; the seed discharging tube (121) of the vibrating seed metering device is arranged inside the vibrating seed metering device (1), and is divided into a seed filling section (121a), a seed population separation section (121b), and a seed posture adjustment straight section (121c) from the bottom to the top of the vibrating seed metering device (1); the seed posture adjustment straight section (121c) is connected to a seed restraining device (123) of the vibrating seed metering device; The seed metering device seeding tube (121) is used to transport seeds from the lower part of the vibrating seed metering device (1) to the upper part of the vibrating seed metering device (1) in an even and orderly manner through vibration under the drive of the vibration component; the seed filling section (121a) is used to receive seeds provided by the seed supply device, the seed population separation section (121b) is used to separate seeds from the seed population and arrange them evenly and orderly, and the seed posture adjustment straight section (121c) is used to adjust the seed posture together with the seed restraining device (123) of the vibrating seed metering device.

3. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 2, characterized in that: The seeding tube (121) of the seeding device is provided with a seed dropping section (121d) after the seed posture adjustment straight section (121c), and a photosensitive sensor (124) is provided on the seed dropping section (121d). The photosensitive sensor (124) is used to collect the seed dropping frequency.

4. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 1, characterized in that: The seed restraining device (123) of the vibrating seed metering device is provided with a seed posture adjustment swing rod (123c), one end of the seed posture adjustment swing rod is movably connected to the seed restraining device (123) of the vibrating seed metering device, and the other end of the seed posture adjustment swing rod (123c) is an adjustable end, and the adjustable end can swing up and down in the vertical direction; the seed posture adjustment swing rod (123c) is provided with a plurality of seed posture top wheels (123d); When the seeds pass through the seed posture top wheel (123d), they are constrained by the seed posture adjustment rod (123c), and the plurality of seed posture top wheels (123d) can move the seeds that are not in a flat position, so that the seed flow maintains consistency in posture.

5. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 4, characterized in that: The seed restraining device (123) of the vibrating seed metering device is provided with a posture adaption adjustment plate (123e) at the adjustable end of the seed posture adjustment swing rod (123c), and the posture adaption adjustment plate (123e) is used to adjust the swing angle of the adjustable end of the seed posture adjustment swing rod (123c) to meet the needs of different seeds.

6. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 1, characterized in that: The seed receiving and pneumatic delivery device (2) comprises a seed receiving and pneumatic acceleration member (27), the upper part of which is provided with a seed receiving and dropping device, the seed receiving and dropping device being used to receive and drop single seeds in sequence; the lower part of the seed receiving and pneumatic acceleration member (27) is provided with a positive pressure acceleration device, the positive pressure acceleration device being used to accelerate the single seed dropped by the seed receiving and dropping device using a positive pressure airflow, so as to accelerate the seed and eject it out of the vibrating seeding device.

7. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 6, characterized in that: The seed receiving and dropping device comprises an electromagnetic push rod (21), the end of which is provided with a seed receiving plate (28); the seed receiving plate (28) can reciprocate under the drive of the electromagnetic push rod (21), and is used to receive and drop seeds discharged by the vibrating seed metering device (1) in a single-grain manner.

8. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 6, characterized in that: The positive pressure acceleration device comprises a stable positive pressure air chamber (27d); the stable positive pressure air chamber (27d) receives positive pressure gas to form a stable positive pressure cavity, and introduces the positive pressure gas into a seed acceleration airway (27g) to accelerate the seeds.

9. A vibrating seeding device for a soybean / corn high-speed precision seeder as claimed in claim 8, characterized in that: The seed accelerating airway (27g) is an annular airway surrounding the seed falling channel and connected to the seed falling channel; the annular airway can reduce the collision between the seeds and the inner wall of the falling channel due to uneven airflow.

10. A soybean / corn vibration seeding method, characterized in that: The steps include: Step 1, pouring seeds into a seed supply device, and the seeds fall through the seed supply device and accumulate at the bottom of a vibration unit (12) of a vibrating seed metering device; Step 2, turning on the vibration assembly installed on the vibration unit (12) of the vibration seed metering device, the seeds enter the seeding tube (121) of the vibration seed metering device under vibration, and move evenly and orderly along the seeding tube (121) of the vibration seed metering device toward the upper part of the vibration unit (12) of the vibration seed metering device; the vibration frequency of the vibration assembly can be adjusted according to the type of seeds, so that the movement and falling speed of the seeds meets the agronomic requirements of the seed sowing speed and the spacing between plants, the falling frequency of the seeds in the seed dropping section (121d) and the receiving and dropping frequency of the seed receiving and dropping device should match the seed dropping frequency generated by the vibration frequency of the vibration assembly, wherein the seed dropping frequency should be detected by the photosensitive sensor (124); Step 3, when the seeds reach the vibrating seed metering device seed posture restraint device (123) on the upper part of the seed metering device vibration unit (12), they are adjusted to a uniform posture under the restraint of the vibrating seed metering device seed posture restraint device (123), and then discharged into the seed receiving pneumatic acceleration member (27) through the seed dropping section (121d); Step 4, the seeds are sequentially received and dropped in the seed receiving and dropping device of the seed receiving pneumatic acceleration member (27) to the positive pressure acceleration device, and the time difference of the seeds falling can be eliminated in the process of being received and dropped in an orderly manner, so that the falling seeds are uniform and orderly; Step 5: After the seeds are accelerated by the positive pressure airflow in the positive pressure acceleration device, they are ejected out of the vibrating seed metering device.

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