A vibrating seed metering device and method for a high-speed precision soybean / corn planter

Abstract

The application relates to a vibration type seed metering device and a seed metering method for 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), and the seed receiving pneumatic delivery device (2) is installed below the vibration type seed metering device (1), characterized in that the vibration type seed metering device (1) comprises a vibration type seed metering device vibration unit (12), the vibration type seed metering device vibration unit (12) is connected with a vibration assembly, and the vibration assembly is used for driving the vibration type seed metering device vibration unit (12) to vibrate. The vibration type seed metering device adopts a vibration principle, realizes uniform and orderly separation of seeds from a seed group, and enables the seeds to move closely; and the seed metering quality can be improved through seed secondary error elimination, air flow delivery bulletproof and other methods.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, specifically to a vibrating seed metering device and seed metering method for a high-speed precision soybean / corn seeder. Background Technology

[0002] Soybeans and corn are important food and feed crops with broad economic and social value. Soybeans are a significant oilseed crop and protein source in my country, while corn economic products cover three major industries, characterized by wide coverage and a long industrial chain. Besides seed quality and advanced cultivation techniques, sowing quality is also a crucial factor affecting soybean / corn yield. Uniform seed spacing reduces competition for water, nutrients, and light and heat, improving soil moisture and nutrient utilization efficiency and thus increasing yield.

[0003] With the increase in operating speed, high-speed precision soybean / corn planters are the main development direction. However, most existing planters have excessively high seed tray rotation speeds, which intensifies friction and collision between seed groups during seed filling and significantly shortens the filling time, increasing the missed seeding rate. During seeding, the collision between the seeds and the seed guide tube and the bouncing of the seeds as they fall into the seed bed are also intensified, resulting in common problems such as high missed seeding rate and poor uniformity of plant spacing in high-speed operations. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a vibrating seed metering device for a high-speed precision soybean / corn planter. This vibrating seed metering device utilizes vibration principles to achieve uniform and orderly seed separation from the seed stock, enabling tight and high-speed seed transport and achieving high-speed, uniform, and orderly seed separation. Furthermore, it can improve seeding quality through methods such as eliminating secondary seed errors and using airflow delivery with anti-ballistic features.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A vibrating seed metering device for a high-speed precision soybean / corn seeder includes a seed supply device, a vibrating seed metering device 1, and a seed receiving pneumatic delivery device 2. The seed supply device is installed above the vibrating seed metering device 1, and the seed receiving pneumatic delivery device 2 is installed below the vibrating seed metering device 1. The vibrating seed metering device 1 includes a vibrating unit 12, which is connected to a vibration assembly. The vibration assembly is used to drive the vibrating unit 12 to vibrate.

[0007] When the vibration unit 12 of the vibrating seed metering device vibrates, it separates and discretizes the seeds from the population and transports them evenly and orderly from the bottom to the top of the vibrating seed metering device 1; then the seed posture is adjusted to be uniform by the seed posture constraint device 123 of the vibrating seed metering device installed on the top of the vibrating seed metering device 1.

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

[0009] Based on the above plan,

[0010] The vibrating unit 12 of the vibrating seed metering device includes a vibrating seed metering tube 121; the vibrating seed metering tube 121 is located inside the vibrating seed metering device 1, and is divided into a seed filling section 121a, a 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 posture constraint device 123 of the vibrating seed metering device.

[0011] The seed metering tube 121 is used to transport seeds evenly and orderly from the lower part of the vibrating seed metering device 1 to the upper part of the vibrating seed metering device 1 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 population separation section 121b is used to separate the seeds from the 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 constraint posture device 123 of the vibrating seed metering device.

[0012] Based on the above plan,

[0013] The seed metering tube 121 of the seed metering device is further provided with a seed dropping section 121d after the seed posture adjustment straight section 121c. A photosensitive sensor 124 is provided on the seed dropping section 121d, which is used to collect the seed dropping frequency.

[0014] Based on the above plan,

[0015] The seed posture constraint 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 posture constraint device 123 of the vibrating seed metering device, and the other end of the seed posture adjustment swing rod 123c is an adjustable end, which can swing up and down in the vertical direction. The seed posture adjustment swing rod 123c is provided with multiple seed posture top wheels 123d.

[0016] When a seed passes through the seed attitude top wheel 123d, it is constrained by the seed attitude adjustment lever 123c. Multiple seed attitude top wheels 123d can move seeds that are not in a flat position, so that the seed flow maintains the consistency of attitude.

[0017] Based on the above plan,

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

[0019] Based on the above plan,

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

[0021] Based on the above plan,

[0022] The seed receiving and dropping device includes an electromagnetic push rod 21, and a seed receiving plate 28 is installed at the end of the electromagnetic push rod. 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-seed manner.

[0023] Based on the above plan,

[0024] The positive pressure acceleration device includes a stable positive pressure chamber 27d; the stable positive pressure 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] Based on the above plan,

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

[0027] Another object of the present invention is to provide a vibratory seeding method for soybeans / corn.

[0028] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

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

[0030] Step 1: Pour the seeds into the seed supply device. The seeds fall through the seed supply device and accumulate at the bottom of the vibrating unit 12 of the vibrating seed metering device.

[0031] Step 2: Turn on the vibration component installed on the vibration unit 12 of the vibrating seed metering device. The seeds enter the seed metering tube 121 of the vibrating seed metering device under vibration and move evenly and orderly to the upper part of the vibrating unit 12 along the seed metering tube 121. The vibration frequency of the vibration component can be adjusted according to the type of seed so that the seed movement and falling speed meets the agronomic requirements of seed sowing speed and plant spacing. The falling frequency of the seeds in the seed dropping section 121d and the receiving-dropping frequency of the seed receiving-dropping device should match the seed falling frequency generated by the vibration frequency of the vibration component. The seed falling frequency should be detected by the photosensitive sensor 124.

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

[0033] Step 4: The seeds are sequentially received and released into the positive pressure acceleration device in the seed receiving and releasing device of the seed receiving pneumatic acceleration component 27. During the orderly receiving and releasing process, the time difference of seed falling can be eliminated, so that the falling 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 from the vibrating seed metering device. By setting the seed guide bend 25, the horizontal speed of the seeds ejected from the vibrating seed metering device can be the same as the forward speed of the seeder, so as to achieve "zero speed landing" and ensure seed uniformity.

[0035] The vibrating seed metering device and seed metering method for a high-speed precision soybean / corn seeder described in this invention have the following advantages:

[0036] The vibrating seed metering device provided by this invention uses the vibration principle to improve the efficiency of seed separation from the population. It eliminates errors caused by seed differences through two processes: posture adjustment and receiving and re-planting. It achieves "zero-speed seeding" through pneumatic delivery, thereby improving the sowing quality during high-speed operations.

[0037] This seed metering device can precisely control the speed of seeds by adjusting the vibration frequency and amplitude, ensuring accurate seed delivery even at high speeds, greatly reducing missed sowing and double sowing, and increasing sowing uniformity.

[0038] By precisely controlling the vibration frequency and amplitude through real-time detection of seed movement speed and interval, higher sowing accuracy and stability are achieved. Attached Figure Description

[0039] The present invention includes the following figures:

[0040] Figure 1This is a schematic diagram of the vibrating seed metering device of the high-speed precision soybean / corn seeder described in this invention.

[0041] Figure 2 This is a schematic diagram of the vibrating seed metering device for the high-speed soybean / corn planter described in this invention.

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

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

[0044] Figure 5 This is a schematic diagram of the seed posture constraint device in a vibrating seed metering device.

[0045] Figure 6 This is a schematic diagram of the working principle of the seed attitude constraint device.

[0046] Figure 7 Schematic diagram of a pneumatic seed delivery device;

[0047] Figure 8 This is a structural diagram of the pneumatic accelerator for seed support.

[0048] In the picture:

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

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

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

[0052] 121a. Seed filling section; 121b. Population separation section; 121c. Straight line section for seed posture adjustment; 121d. Seed placement section;

[0053] 123a. Seed posture adjustment fastening shell; 123b. Hinge lug; 123c. Seed posture adjustment lever; 123d. Seed posture top wheel; 123e. Posture adaptation adjustment plate; 123f. Fixing welding plate;

[0054] 21. Electromagnetic push rod; 22. Air pump; 23. Seed feeding device mounting plate; 24. Air pipe; 25. Seed guiding bend; 26. Stabilizing seed guiding straight pipe; 27. Seed receiving pneumatic acceleration component; 28. Seed receiving plate;

[0055] 27a. Seed inlet; 27b. Electromagnetic telescopic rod installation position; 27c. Seed receiving slot; 27d. Stable positive pressure air chamber; 27e. Air source inlet; 27f. Seed guide tube installation position; 27g. Seed acceleration air passage;

[0056] 31. Seed stacking tube. Detailed Implementation

[0057] The present invention will be further described in detail below with reference to the accompanying drawings.

[0058] The vibrating seed metering device primarily uses vibration to separate disordered seeds from the seed population in an orderly manner. The entire seed metering process mainly includes three stages: seed filling, seed conveying, and seed placement. During seed filling, the seeds, aided by the vibration of the seed metering body, disperse the seed population and move evenly around before entering the seed metering tube. Once inside the seed metering tube, the seeds are rapidly and orderly transported along the tube under the vibration drive of the vibrating unit, completing the seed conveying stage. During this stage, seed posture constraint devices can be added based on factors such as seed shape to ensure consistent seed movement and reduce the impact of seed differences on sowing uniformity. After leaving the vibrating unit, the seeds enter the seed placement stage. To further improve seed spacing uniformity, a secondary receiving and feeding device and a positive pressure auxiliary feeding device in an air chamber are added to the seed placement stage. Specifically:

[0059] like Figure 1 As shown, the vibrating seed metering device of the high-speed precision soybean / corn seeder includes a vibrating seed meterer 1, a seed receiving pneumatic delivery device 2, and a seed box 3. Seeds are added from the seed box 3. The vibrating seed meterer 1 is responsible for dispersing the seed population and evenly separating individual seeds. Then, the seed receiving pneumatic delivery device 2 further reduces the influence of differences in seed shape and size, sowing 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 component 11, a vibrating seed metering device vibration unit 12, a vibration source connecting plate 13, a seed metering device mounting housing 14, a seed metering device mounting ear 15, and a vibration generator 16.

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

[0062] The seed metering device mounting housing 14 is the main support bracket and the main frame for the entire seed metering device. Two seed metering device mounting ears 15 are welded to the seed metering device mounting housing 14, allowing the seed metering device to be mounted on the frame of the soybean / corn planter's planting unit via the seed metering device mounting ears 15.

[0063] The seed box mounting component 11 is installed above the seed metering device mounting housing 14, serving to support the upper seed box 3 and seal the seed metering device.

[0064] The vibration assembly includes a vibration generator 16 and a vibration source connection plate 13. The vibration generator 16 is the vibration source of the vibrating seed metering device 1 and can generate vibrations with a certain vibration frequency and amplitude. The vibration generator 16 is fixed to the bottom of the seed metering device mounting housing 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 execution component that realizes the orderly separation of seeds. The vibration source connecting plate 13 is installed on the vibrating seed metering device base plate 125 of the vibration unit 12, and the vibration source connecting plate 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 consists of a vibrating seed metering tube 121, a vibrating seed metering filling shell 122, a vibrating seed metering seed posture constraint device 123, a photosensitive sensor 124, and a vibrating seed metering base plate 125.

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

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

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

[0070] The seed posture constraint device 123 of the vibrating seed metering device is fixed to the seed posture adjustment straight section 121c of the seed metering tube 121 of the vibrating seed metering device by means of a bolt clamping structure. The seed posture adjustment straight section 121c has a long slot hole, so that the seed posture top wheel 123d of the vibrating seed metering device 123 can extend into the seed metering tube.

[0071] A photosensitive sensor 124 is installed in the seed dropping section 121d of the seed dropping tube 121 of the vibrating seed metering device, which can collect the seed dropping frequency.

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

[0073] The seed attitude adjustment fastening shell 123a has an open structure and can be held tightly to the seed attitude adjustment straight section 121c by fastening bolts. The seed attitude adjustment fastening shell 123a is welded with a hinge lug 123b and a fixing plate 123f.

[0074] The seed attitude adjustment lever 123c is equipped with eight seed attitude top wheels 123d. One end (connecting end) of the seed attitude adjustment lever 123c is hinged to the hinge ear 123b, and can swing around the circular hole of the hinge ear 123b as the center. The other end (adjustable end) is welded with an attitude adaptation adjustment plate 123e. The attitude adaptation adjustment plate 123e has a long arc-shaped groove, which can adjust and fix the fixed installation position of the welding plate 123f, further adjust the angle of the seed attitude adjustment lever 123c, so that the arrangement of the seed attitude top wheels 123d forms a certain angle with the seed movement direction, and at the same time, the angle range of the free end swing of the seed attitude adjustment lever 123c can be set.

[0075] The working principle of the seed attitude constraint device is as follows: Figure 6 As shown, before passing through the seed posture adjustment straight segment 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, reducing the uniformity of the seeds. When the seeds pass through the seed posture constraint device 123, the side of the seed moving "horizontally" in the pipe contacts the seed posture top wheel 123d, and under the constraint of the seed posture top wheel 123d, the seed tilts backward and finally "stands" in the pipe. Since different types of seeds have different sizes, when the seed posture adjustment effect cannot meet the requirements, the position of the posture adaptation adjustment plate 123e can be adjusted, and then the position of the seed posture adjustment lever 123c can be adjusted, 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 bend 25, a stable seed guide straight pipe 26, a seed receiving pneumatic acceleration component 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 mounting position 27b, a seed receiving slot 27c, a stable positive pressure air chamber 27d, an air source inlet 27e, a seed guide tube mounting position 27f, and a seed acceleration air passage 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 acceleration air passage 27g.

[0079] The seed feeding device mounting plate 23 is a connecting part for the seed feeding device to be fixedly installed on the vibrating seed metering device. It is installed on the bottom surface of the seed metering device mounting housing 14. The seed feeding device mounting plate 23 is equipped with an air pump 22 and a seed receiving air acceleration component 27. 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. The positive pressure airflow is sent to the stable positive pressure air chamber 27d, and a stable positive pressure cavity is formed in the stable positive pressure air chamber 27d. The gas in the stable positive pressure air chamber 27d is accelerated along the seed acceleration air channel 27g and flows into the seed receiving tube 27h. The seed acceleration air channel 27g adopts an annular design. When the airflow enters the seed receiving tube 27h, it flows downward from the surrounding tube wall, which can prevent the seeds from colliding with the tube wall when accelerating.

[0080] An electromagnetic push rod 21 is installed at the installation position 27b of the electromagnetic telescopic rod. A seed receiving plate 28 is welded to the 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 within the seed receiving slot 27c. The electromagnetic push rod adopts a constantly extending design 21 to ensure that the electromagnetic receiving plate 28 can be constantly inserted into the seed receiving slot 27c to receive seeds entering from the seed inlet 27a. When the electromagnetic push rod 21 is energized, it retracts, and the seeds fall from the receiving plate 28, ensuring that the speed of the seeds is zero at this time, so that the delivery sequence of each seed is the same, ensuring the consistency of the initial delivery state.

[0081] A stable seed guide straight pipe 26 is installed at the seed guide pipe installation position 27f. A seed guide bend 25 is welded to the other end of the stable seed guide straight pipe 26. The direction of the seed guide bend 25 is opposite to the direction of travel of the seeder, so as to ensure that the seed can offset the travel speed of the seeder when it is ejected, and achieve "zero speed landing".

[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 seed metering device all need to be adjusted in real time according to the different operating speeds of the seeder. The specific adjustment process is as follows:

[0083] During operation, based on the tractor's feedback travel speed and the set seed spacing, the system automatically calculates the vibration parameters of the vibration generator 16, the operating frequency of the electromagnetic push rod 21, and the air pressure of the air pump 22, and feeds this information back to the three actuators. The photosensitive sensor 124 detects the seed falling frequency and time at this position. When the seed falling speed does not match the travel speed, the vibration parameters of the vibration generator 16 can be adjusted in real time to ensure the seed falling frequency matches the travel speed. Simultaneously, the system detects the phase difference between the seed and the electromagnetic push rod 21 in real time. When a phase mismatch occurs, the operating phase of the electromagnetic push rod 21 is adjusted in real time to ensure that each seed lands on the seed receiving plate 28, thus zeroing the seed speed.

[0084] Before starting work, pour the seeds into the seed box 3. 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 so that it is compatible with the seeds. If the requirements are not met during the work process, it can also 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. Seeds in the seed box 3 fall into the filling area of ​​the vibration unit 12 of the vibrating seed metering device along the seed accumulation tube 31. Under the action of their own gravity and vibration, the seeds disperse in all directions and enter the filling section 121a of the seed metering tube 121 of the vibrating seed metering device. Under the action of vibration, the seeds move upward along the seed metering tube and then enter the seed separation section 121b. After separation, the seeds move evenly and orderly in the seed metering tube. When they reach the seed attitude adjustment straight section 121c, under the constraint of the seed attitude constraint device 123 of the vibrating seed metering device, the seeds move in a "vertical" attitude and fall evenly and orderly from the seed falling section 121d. After data acquisition by the photosensitive sensor 124, the seeds fall into the seed inlet 27a of the seed receiving pneumatic accelerator 27 and fall along the seed receiving tube 27h under the action of gravity. To eliminate the influence of factors such as seed size differences, when the seed reaches the seed receiving slot 27c, it is received by the seed receiving plate 28, causing its vertical velocity to be zero. Under the action of the electromagnetic push rod 21, the seed receiving plate 28 retracts, and the seed falls vertically with an initial velocity of zero. Upon reaching the seed acceleration air passage 27g, the seed begins to be accelerated by the airflow. The seed accelerates under the combined action of gravity and the airflow generated by the air pump 22, transported through the air pipe 24, and stabilized by the positive pressure air chamber 27d. The seed accelerates stably within the stable seed guide straight pipe 26, and changes direction under the constraint of the seed guide curved pipe 25, so that when it leaves the seed guide curved pipe 25, the seed's horizontal velocity is the same as the seeder's forward speed, achieving "zero-speed landing" and ensuring seed uniformity.

[0086] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A vibrating seed metering device for a high-speed precision soybean / corn seeder, comprising a seed supply device, a vibrating seed metering device (1), and a seed receiving pneumatic delivery device (2), wherein the seed supply device is installed above the vibrating seed metering device (1), and the seed receiving pneumatic delivery device (2) is installed below the vibrating seed metering device (1), characterized in that, The vibrating seed meter (1) includes: a vibrating seed meter vibration unit (12), the vibrating seed meter vibration unit (12) is connected to a vibration component, and the vibration component is used to drive the vibrating seed meter vibration unit (12) to vibrate; When the vibration unit (12) of the vibrating seed metering device vibrates, it separates and discretizes the seeds from the population and transports them evenly and orderly from the bottom to the top of the vibrating seed metering device (1); then the seed posture is adjusted to be uniform by the seed posture constraint 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 to accelerate the seeds out of the vibrating seed metering device using positive pressure airflow. The seed attitude constraint device (123) of the vibrating seed metering device is provided with a seed attitude adjustment swing rod (123c). One end of the seed attitude adjustment swing rod is movably connected to the seed attitude constraint device (123) of the vibrating seed metering device, and the other end of the seed attitude adjustment swing rod (123c) is an adjustable end, which can swing up and down in the vertical direction. The seed attitude adjustment swing rod (123c) is provided with multiple seed attitude top wheels (123d). When a seed passes through a seed attitude top wheel (123d), it is constrained by a seed attitude adjustment lever (123c). Multiple seed attitude top wheels (123d) can move seeds that are not in a flat position, so that the seed flow maintains the consistency of attitude.

2. The vibrating seed metering device for a high-speed precision soybean / corn seeder as described in claim 1, characterized in that: The vibrating unit (12) of the vibrating seed metering device includes a vibrating seed metering tube (121); the vibrating seed metering tube (121) is located inside the vibrating seed metering device (1) and is divided into a seed filling section (121a), a 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 posture constraint device (123) of the vibrating seed metering device; The seed metering tube (121) is used to transport seeds evenly and orderly from the lower part of the vibrating seed metering device (1) to the upper part of the vibrating seed metering device (1) under the drive of the vibration component; the seed filling section (121a) is used to receive seeds provided by the seed supply device; the population separation section (121b) is used to separate the seeds from the 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 posture constraint device (123) of the vibrating seed metering device.

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

4. The vibrating seed metering device for a high-speed precision soybean / corn seeder as described in claim 1, characterized in that: The seed posture constraint device (123) of the vibrating seed metering device is provided with a posture adaptation adjustment plate (123e) at the adjustable end of the seed posture adjustment swing rod (123c). The posture adaptation adjustment plate (123e) is used to adjust the swing angle of the adjustable end of the seed posture adjustment swing rod (123c) to adapt to the needs of different seeds.

5. The vibrating seed metering device for a high-speed precision soybean / corn seeder as described in claim 3, characterized in that: The seed receiving pneumatic delivery device (2) includes a seed receiving pneumatic accelerator (27). The upper part of the seed receiving pneumatic accelerator (27) is provided with a seed receiving-dropping device, which is used to receive and drop single seeds in sequence. The lower part of the seed receiving pneumatic accelerator (27) is provided with a positive pressure acceleration device, which is used to accelerate the single seeds dropped by the seed receiving-dropping device with positive pressure airflow, so as to accelerate the seeds out of the vibrating seed metering device.

6. The vibrating seed metering device for a high-speed precision soybean / corn seeder as described in claim 5, characterized in that: The seed receiving-dropping device includes an electromagnetic push rod (21) with a seed receiving plate (28) at the end of the electromagnetic push rod. 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-seed manner.

7. The vibrating seed metering device for a high-speed precision soybean / corn seeder as described in claim 5, characterized in that: The positive pressure acceleration device includes a stable positive pressure chamber (27d); the stable positive pressure chamber (27d) receives positive pressure gas to form a stable positive pressure cavity, and introduces the positive pressure gas into the seed acceleration channel (27g) to accelerate the seeds.

8. The vibrating seed metering device for a high-speed precision soybean / corn seeder as described in claim 7, characterized in that: The seed acceleration airway (27g) is an annular airway surrounding and connected to the seed falling channel; the annular airway can reduce the collision between the seed and the inner wall of the falling channel due to uneven airflow.

9. A soybean / corn vibratory seeding method using the vibratory seeding device of claim 5, characterized in that, Includes the following steps: Step 1: Pour the seeds into the seed supply device. The seeds fall through the seed supply device and accumulate at the bottom of the vibrating unit (12) of the vibrating seed metering device. Step 2: Turn on the vibration component installed on the vibration unit (12) of the vibrating seed meterer. The seeds enter the seed metering tube (121) of the vibrating seed meterer under vibration and move evenly and orderly to the upper part of the vibrating unit (12) along the seed metering tube (121). The vibration frequency of the vibration component can be adjusted according to the type of seed so that the seed movement and falling speed meets the agronomic requirements of seed sowing speed and plant spacing. The falling frequency of the seeds in the seed dropping section (121d) and the receiving-dropping frequency of the seed receiving-dropping device should match the seed falling frequency generated by the vibration frequency of the vibration component. The seed falling frequency should be detected by the photosensitive sensor (124). Step 3: When the seeds reach the vibrating seed metering device (123) on the upper part of the seed metering unit (12), they are adjusted to a uniform posture under the constraint of the vibrating seed metering device (123), and then discharged into the seed receiving pneumatic accelerator (27) through the seed dropping section (121d). Step 4: The seeds are sequentially received and dropped into the positive pressure acceleration device in the seed receiving-dropping device of the seed receiving pneumatic acceleration component (27). During the orderly receiving-dropping process, the time difference of seed drop can be eliminated, 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 from the vibrating seed metering device.

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