A precision seed metering device for corn with automatic reseeding

Abstract

This invention relates to the field of precision seeding equipment technology, specifically a precision corn seed metering device with automatic reseeding. It includes a seed metering mechanism comprising a front cover, a rear cover fixedly connected to one side of the front cover, and a seed outlet at the bottom of the rear cover. In this invention, a seed-protecting plate is fixed to the inner wall of the front cover, with its side chamfered at 45 degrees. This provides a supporting force to the seeds in the seed tray, effectively preventing seeds from detaching from the tray due to centrifugal force, vibration, or tilting, thus preventing missed sowing. One to two corn seeds are automatically filled into the seed tray through holes on the surface of the reseeding wheel. As the reseeding wheel rotates, excess seeds are brushed away by a seed-cleaning brush, leaving only one seed in the tray. The seed is then protected by a seed-protecting arc and the seed tray inside the seed guide tube. After the seed tray passes the seed-protecting arc, the seed falls out of the tray under gravity and descends along the inner wall of the seed guide tube.

Description

Technical Field

[0001] This invention relates to the field of precision seeding equipment technology, specifically a precision seed metering device for corn with automatic reseeding. Background Technology

[0002] Corn is an important food crop in my country. Precision corn planting technology refers to the technique of using precision planting machinery to accurately sow corn seeds into the soil according to agronomical requirements regarding seeding rate, row spacing, plant spacing, and depth. This technology not only improves the accuracy of sowing but also mechanizes multiple operations such as sowing, fertilization, soil covering, and compaction, thereby significantly improving operational efficiency.

[0003] Traditional spoon-wheel seed metering devices lack a seed protection mechanism. As the operating speed increases, the speed of the seed metering device also increases, causing the seeds in the spoon socket to be thrown out due to increased centrifugal force, resulting in missed sowing. In addition, during field operations, the seeds in the spoon socket are easily affected by vibration and slope (especially when tilted towards the seed filling chamber), leading to missed sowing and affecting the sowing effect. If manual re-sowing is required later, it is time-consuming and labor-intensive. Therefore, a precision seed metering device for corn with automatic re-sowing was designed.

[0004] The embryo of a corn seed is located at the tip of its flattened cone. When sowing, if the embryo is facing downwards in the soil, it needs to turn upwards to emerge. However, the germination power of the embryo is weak, resulting in a low emergence rate. Furthermore, the seedlings tend to circle around the seed, potentially growing crookedly, leading to uneven emergence. The tip of a corn seed has many capillaries; placing the seed with the embryo facing upwards allows water and nutrients to enter the embryo more easily, promoting rapid germination. Existing precision seed metering devices for corn often fail to ensure that every corn seed is sown with its tip facing upwards, thus affecting the embryo emergence rate and uniformity of seedling emergence. Summary of the Invention

[0005] The purpose of this invention is to provide a precision seed metering device for corn with automatic reseeding, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A precision seed metering device for maize with automatic reseeding, comprising:

[0008] A seed metering mechanism, comprising a front cover, a rear cover fixedly connected to one side of the front cover, and a seed outlet at the bottom of the rear cover;

[0009] The replanting mechanism is fixedly installed on the outer wall of the rear cover;

[0010] The seed orientation mechanism is fixedly installed at the bottom of the rear cover.

[0011] The seed-burying mechanism is fixedly installed at the bottom of the seed-orienting mechanism;

[0012] The trenching mechanism is located on one side of the seed-burying mechanism.

[0013] Furthermore, the seeding mechanism includes:

[0014] Seed protection plate, fixedly connected to the inner wall of the front cover;

[0015] Seed box, fixedly connected to the top of the seed box and connected to the inside of the front cover;

[0016] A rotating shaft is rotatably connected to the rear cover.

[0017] The upper synchronous pulley is fixedly sleeved to the rotating shaft at its center position;

[0018] A synchronous seed guide belt, one end of which is fitted with an upper synchronous pulley, and multiple seed guide teeth are evenly spaced on the outer wall of the synchronous seed guide belt;

[0019] The lower synchronizing pulley is fitted onto the other end of the synchronizing guide belt.

[0020] Furthermore, the seeding mechanism includes:

[0021] The partition is fixedly connected to the inner wall of the rear cover;

[0022] A spoon wheel, which has twenty-four spoon sockets, is fixedly connected to the center of the upper synchronous pulley;

[0023] A drive motor, the output end of which is fixedly connected to the rotating shaft.

[0024] Furthermore, the replanting mechanism includes:

[0025] The seed guide tube is fixedly connected to the side wall of the rear cover;

[0026] The protective arc is located within the seed-replenishing guide tube;

[0027] The seed cleaning brush is fixedly connected inside the replanting guide tube;

[0028] A replanting wheel is rotatably connected to a replanting guide tube, and the outer wall of the replanting wheel is provided with multiple holes at equal intervals in a ring shape;

[0029] A replanting motor, wherein the output end of the replanting motor is fixedly connected to the center position of the replanting wheel;

[0030] The leak sensor is fixedly installed on the outer wall of the rear cover.

[0031] Furthermore, the seed orientation mechanism includes:

[0032] The turntable is located at the bottom of the rear cover.

[0033] A double-groove synchronous pulley is fixedly fitted onto the central shaft of the turntable;

[0034] Synchronous belt one, fitted onto the outside of the double-groove synchronous pulley;

[0035] Synchronous pulley one is sleeved on one end of synchronous belt one, and synchronous pulley one is fixedly connected to the rotating shaft;

[0036] Support plate, used to fix the seed orientation mechanism, seed burying mechanism, furrowing mechanism and rear cover;

[0037] Multiple orientation boxes are arranged in a ring at equal intervals on one side of the turntable.

[0038] The protrusion is fixedly installed on the side wall of the orientation box;

[0039] The V-groove is located at the center of the orientation box;

[0040] Sliding column one is fixedly connected to the outer wall of the orientation box, and sliding column one is slidably connected to the turntable;

[0041] A compression spring is fixedly connected to one end of the sliding column;

[0042] An arc-shaped plate is fixedly connected to a support plate. Multiple vibration grooves are circumferentially spaced on the arc-shaped plate, and the protrusions abut against the inner wall of the arc-shaped plate.

[0043] Furthermore, the orientation box includes:

[0044] The sponge board is slidably connected inside the orientation box;

[0045] The second sliding column is fixedly connected at its end to the side wall of the sponge board and slidably connected to the directional box;

[0046] Rollers are rotatably connected to both ends of the sliding column;

[0047] The return spring is sleeved on the outside of the sliding post two, and one end is fixedly connected to the outer wall of the orientation box;

[0048] The abutment plate has a slidable contact with the roller, the abutment plate has an inclined surface, and the end of the abutment plate has a notch.

[0049] Furthermore, the seed-planting mechanism includes:

[0050] The seed-burying box is located directly below the orientation box;

[0051] The lifting seat is fixedly connected to the side wall of the seed-burying box;

[0052] An embedded block is fixedly connected to the inner wall of the lifting seat;

[0053] The rotating column is slidably connected inside the lifting seat;

[0054] The spiral groove is slidably embedded in the insert block, and the spiral spacing of the spiral groove gradually increases.

[0055] A limiting frame is rotatably connected to the outside of the rotating column, and the limiting frame is fixedly connected to the support plate;

[0056] A forward and reverse motor, wherein the bottom end of the rotating column is fixedly connected to the output end of the forward and reverse motor;

[0057] A rotating plate is rotatably connected to the bottom of the seed-burying box, and a torsion spring is fixedly installed at the rotatable connection between the rotating plate and the seed-burying box.

[0058] There are two feeding plates, which are symmetrically and fixedly connected to the outer wall of the seed-burying box;

[0059] The positioning frame is fixedly connected to the bottom of the limiting frame;

[0060] The pry plate is fixedly connected to the top of the positioning frame;

[0061] A buffer plate is installed at the bottom of the limit frame;

[0062] There are two limiting rods, which are fixedly connected to the bottom of the buffer plate, and a buffer spring is sleeved on the outside of the limiting rod.

[0063] Furthermore, the seed-planting mechanism includes:

[0064] The air pump is located on top of the directional box;

[0065] The bend is fixedly connected to the output end of the air pump;

[0066] The jet column is fixedly connected to the end of the bend.

[0067] Furthermore, the trenching mechanism includes:

[0068] The positioning plate is fixedly connected to the inner wall of the support plate;

[0069] Two rotating rollers are provided and are rotatably connected to the positioning plate.

[0070] Synchronous pulley two is fixedly connected to the end of the rotating roller;

[0071] Synchronous belt two, one end of which is sleeved with synchronous pulley two, and the other end of which is sleeved with double groove synchronous pulley;

[0072] The conveyor belt is fitted between two rotating rollers;

[0073] Multiple soil-carrying plates are installed and fixedly connected to the surface of the conveyor belt at equal intervals.

[0074] Furthermore, the trenching mechanism includes:

[0075] There are two connecting columns, which are fixedly connected to the outer wall of the positioning plate;

[0076] The shovel plate is fixedly connected between two connecting columns.

[0077] Compared with the prior art, the beneficial effects of the present invention are:

[0078] The 24 equidistant scoops of corn seeds, arranged in a ring, continuously scoop up the seeds that are blocked by the partition. This causes the seeds to rotate. When the seeds rotate to the slots on the partition, they fall between the adjacent guide teeth on the synchronous seed guide belt. The upper and lower synchronous wheels drive the synchronous seed guide belt to roll continuously, thus continuously transporting the corn seeds to the seed outlet at the bottom of the rear cover to complete the seed dispensing process. A seed protection plate is fixed to the inner wall of the front cover, and the side of the seed protection plate is beveled at 45 degrees. This provides a support force pointing towards the scoops, effectively preventing the seeds from falling out of the scoops due to centrifugal force, vibration, or tilting, thus preventing missed sowing.

[0079] The missing seed sensor in the replanting mechanism detects the seed guide teeth in the synchronous seed guide belt. If no seed is detected in a seed guide tooth, it is determined to be a missed seed, and this seed guide tooth is then marked as a missed seed guide tooth. At this time, the output shaft of the replanting motor drives the replanting wheel to rotate, and 1-2 corn seeds are automatically filled into the dimples on the surface of the replanting wheel. As the replanting wheel rotates, excess seeds are brushed away by a seed cleaning brush, leaving only one seed in the dimple. At this point, the seed is protected by the seed guarding circle installed inside the replanting guide tube. The arc and the seed-protecting holes are wrapped and protected until the seed-protecting arc passes through the seed-protecting arc. Under gravity, the seeds will fall out of the seed-protecting holes and fall down the inner wall of the seed-replenishing guide tube. At this time, the marked missed seed-replenishing guide teeth rotate to the bottom of the seed-replenishing guide tube, and the seeds fall into the missed seed-replenishing guide teeth, so that there are seeds on the back of the guide teeth. This allows the missed seed-replenishing guide teeth to be filled with corn seeds. The seed-replenishing mechanism is used to detect missed seeding and automatically replenish seeds at the missed seeding location, thereby effectively solving the problem of missed seeding and improving the efficiency of corn planting operations.

[0080] When corn seeds fall into the orientation box, they are guided by V-shaped grooves, ensuring the flat, conical shape of the seed is placed downwards within the grooves. A rotating shaft, synchronous pulley, and synchronous belt drive a double-groove synchronous wheel, which in turn drives a turntable that rotates multiple orientation boxes. During rotation, protrusions on the outer wall of the orientation box slide against an arc-shaped plate, intermittently embedding into vibration grooves on the inner wall of the arc-shaped plate. Because a compression spring is connected to one end of the sliding column, the protrusions remain in contact with the inner wall of the arc-shaped plate, causing the orientation box to reciprocate horizontally. Therefore, some corn seeds that are not pointing downwards are repositioned during vibration until their tips are embedded in the V-shaped grooves and stabilized. When the orientation box rotates until its opening aligns perfectly with the seed-burying box, the corn seed is facing upwards. When the roller reaches the notch, the sponge plate no longer applies pressure to the seed. Air is then supplied to the air jet column via an air pump and a curved pipe, and the air jet column sprays high-pressure gas, stabilizing the seed. Seeds with their pointed ends facing upwards fall rapidly into the soil in the seed-burying box below under air pressure. The pressure of the soil particles helps keep the corn seeds pointed upwards. Then, a rotating column is driven by a forward and reverse motor. Because the surface of the rotating column has spiral grooves with gradually increasing spiral spacing, it drives the lifting seat and the seed-burying box to fall faster. During the descent of the seed-burying box, the rotating plate and the prying plate collide, causing the rotating plate to flip and open the bottom of the seed-burying box. When the rapidly descending lifting seat comes into contact with the buffer plate connected to the buffer spring, it can create an impact on the seed-burying box. Then, under the action of inertia, the soil in the seed-burying box, along with the pointed corn seeds, is discharged into the soil. The corn seeds that are pushed into the soil can germinate and grow in a flat cone-shaped state with their pointed ends facing upwards. This ensures that the embryo can grow upwards smoothly when it breaks through the soil, reducing the resistance to breaking through the soil. This is beneficial to the germination of the seeds and the growth of the seedlings, thus improving the emergence rate and uniformity of the corn seed embryos. Attached Figure Description

[0081] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0082] Figure 2 This is a schematic diagram of the front cover structure in this invention;

[0083] Figure 3 This is a schematic diagram of the internal structure of the rear cover in this invention;

[0084] Figure 4 This is a schematic diagram of the synchronous seed guide belt structure in this invention;

[0085] Figure 5 This is a schematic diagram of the spoon wheel structure in this invention;

[0086] Figure 6 This is a schematic diagram of the replanting mechanism in this invention;

[0087] Figure 7 This is a schematic diagram of the seed orientation mechanism in this invention;

[0088] Figure 8 This is a schematic diagram of the turntable connection structure in this invention;

[0089] Figure 9 This is a schematic diagram of the abutment plate structure in this invention;

[0090] Figure 10 This is a schematic diagram of the internal structure of the orientation box in this invention;

[0091] Figure 11 This is a schematic diagram of the seed-burying mechanism in this invention;

[0092] Figure 12 This is a schematic diagram of the seed-burying box structure in this invention;

[0093] Figure 13 This is a schematic diagram of the trenching mechanism in this invention.

[0094] In the diagram: 100. Seed metering mechanism; 101. Front cover; 102. Rear cover; 103. Seed protection plate; 104. Seed box; 105. Rotating shaft; 106. Upper synchronous pulley; 107. Synchronous seed guide belt; 108. Lower synchronous pulley; 109. Partition plate; 110. Spoon wheel; 111. Drive motor; 200. Replenishment mechanism; 201. Replenishment seed guide tube; 202. Seed protection arc; 203. Seed cleaning brush; 204. Replenishment wheel; 205. Replenishment motor; 206. Missed seed sensor; 300. Seed orientation mechanism; 301. Turntable; 302. Double groove synchronous pulley; 303. Synchronous belt one; 304. Synchronous pulley one; 305. Support plate; 306. Orientation box; 307. Protrusion; 308. V-groove; 309. Sliding column one; 310. Compression spring; 311. 312. Sponge board; 313. Sliding column II; 314. Roller; 315. Return spring; 316. Arc plate; 317. Abutment plate; 318. Notch; 400. Seeding mechanism; 401. Seeding box; 402. Lifting seat; 403. Embedding block; 404. Rotating column; 405. Spiral groove; 406. Limiting frame; 407. Forward and reverse motor; 408. Rotating plate; 409. Feeding plate; 410. Positioning frame; 411. Prying plate; 412. Buffer plate; 413. Limiting rod; 414. Air pump; 415. Bend; 416. Air jet column; 500. Trenching mechanism; 501. Positioning plate; 502. Rotating roller; 503. Synchronous pulley II; 504. Synchronous belt II; 505. Conveyor belt; 506. Soil transport plate; 507. Connecting column; 508. Soil shovel plate. Detailed Implementation

[0095] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0096] Please see Figures 1-13 In this embodiment of the invention, a precision seed metering device for corn with automatic reseeding includes:

[0097] The seed dispensing mechanism 100 includes a front cover 101, a rear cover 102 fixedly connected to one side of the front cover 101, and a seed outlet at the bottom of the rear cover 102; a replanting mechanism 200 fixedly mounted on the outer wall of the rear cover 102; a seed orientation mechanism 300 fixedly mounted at the bottom of the rear cover 102; a seed burying mechanism 400 fixedly mounted at the bottom of the seed orientation mechanism 300; and a furrowing mechanism 500 mounted on one side of the seed burying mechanism 400. The seed dispensing mechanism 100 also includes: a seed protection plate 103 fixedly connected to the inner wall of the front cover 101; a seed box 104 fixedly connected to the top of the seed box 104 and communicating with the interior of the front cover 101; and a rotating shaft 105 rotatably connecting... The upper synchronous wheel 106 is fixedly sleeved at the center of the upper synchronous wheel 106 and the rotating shaft 105; the synchronous seed guide belt 107 is sleeved at one end of the synchronous seed guide belt 107 and has multiple seed guide teeth evenly spaced on its outer wall; the lower synchronous wheel 108 is sleeved at the other end of the synchronous seed guide belt 107; the seed dispensing mechanism 100 includes: a partition 109 fixedly connected to the inner wall of the rear cover 102; a spoon wheel 110 with twenty-four spoon sockets and fixedly connected to the center of the upper synchronous wheel 106; and a drive motor 111 whose output end is fixedly connected to the rotating shaft 105.

[0098] Specifically, the corn seeds in the seed box 104 continuously fall into the front cover 101. The seeds are blocked by the partition 109. The output of the drive motor 111 drives the upper synchronous wheel 106 to rotate. The upper synchronous wheel 106 drives the scoop wheel 110 to rotate. The scoop wheel 110 uses twenty-four equally spaced circular scoop holes to continuously scoop up the corn seeds blocked by the partition 109, causing the seeds to rotate. When the seeds rotate to the slots on the partition 109, they fall onto the synchronous seed guide belt 107. Between adjacent seed guide teeth, the upper synchronous wheel 106 and the lower synchronous wheel 108 can drive the synchronous seed guide belt 107 to roll continuously, thus continuously conveying corn seeds to the seed outlet at the bottom of the rear cover 102 to complete the seed dispensing work. By fixing a seed protection plate 103 on the inner wall of the front cover 101, and the side chamfer of the seed protection plate 103 is 45 degrees, it can provide a support force pointing towards the seed in the seed scoop, which can effectively prevent the seeds from leaving the seed scoop due to centrifugal force, vibration or tilt, thus preventing missed sowing.

[0099] The missing seed sensor 206 in the replanting mechanism 200 detects the seed guide teeth in the synchronous seed guide belt 107. If no seed is detected in the seed guide tooth, it is determined to be a missed seed, and this seed guide tooth is then marked as a missed seed guide tooth. At this time, the output shaft of the replanting motor 205 drives the replanting wheel 204 to rotate. One or two corn seeds are automatically filled through the dimples on the surface of the replanting wheel 204. As the replanting wheel 204 rotates, excess seeds are brushed away by the seed cleaning brush 203, leaving only one seed in the dimple. At this time, the seed is then transferred to the replanting guide tube 201. The seed-protecting arc 202 and the seed hole are installed inside for protection. After the seed hole rotates past the seed-protecting arc 202, the seed will fall out of the seed hole under gravity. As the seed-replenishing guide tube 201 falls down the inner wall, the marked missed seed guide tooth rotates to the bottom of the seed-replenishing guide tube 201. At this time, the seed falls into the missed seed guide tooth, so that there is a seed on the back of the guide tooth. This allows the missed seed guide tooth to be replenished with corn seeds. The seed-replenishing mechanism 200 detects missed seeding and automatically replenishes seeds at the missed seeding location, thus effectively solving the problem of missed seeding and improving the efficiency of corn planting operations.

[0100] Corn seeds are discharged from the seed outlet at the bottom of the rear cover 102 and fall into the orientation box 306. Upon entering the orientation box 306, the corn seeds are guided by the V-shaped groove 308, ensuring the flat conical shape of the seed faces downwards within the V-shaped groove 308. The rotating shaft 105, synchronous pulley 304, and synchronous belt 303 drive the double-groove synchronous pulley 302 to rotate, thereby driving the turntable 301 to rotate multiple orientation boxes 306. During the rotation of the orientation box 306, the protrusions 307 on its outer wall abut against and slide against the arc-shaped plate 315. The protrusions 307 are intermittently embedded in the vibration grooves opened on the inner wall of the arc-shaped plate 315. Because the sliding column 309 is connected at its end... With a compression spring 310, the protrusion 307 always slides against the inner wall of the arc plate 315, which drives the orienting box 306 to reciprocate in the horizontal direction. Therefore, during the vibration, some corn seeds that are not facing downwards will be repositioned until their tips are embedded in the V-groove 308 and remain stable. When the turntable 301 rotates, the roller 313 on one side of the orienting box 306 will roll along the inclined surface of the abutment plate 316, which will drive the sliding column 312 and the sponge plate 311 to move towards the inside of the orienting box 306. This allows the sponge plate 311 to clamp the corn seeds, preventing the corn seeds from accidentally falling out when the opening of the orienting box 306 is facing downwards.

[0101] When the orienting box 306 rotates until its opening corresponds to the seed-burying box 401, the corn seeds are facing upwards. The synchronous pulley 503 can be driven to rotate synchronously through the double-groove synchronous pulley 302 and the synchronous belt 504. Therefore, the conveyor belt 505 is driven to roll by the rotating roller 502. The seed metering device is usually installed on the tractor. As the tractor drives the ditching mechanism 500 to move, the shovel plate 508 digs a trench for sowing in a linear pattern. The soil shoveled by the shovel plate 508 will accumulate and eventually fall onto the soil transport plate 506. Then, the conveyor belt 505 transports the soil-carrying plate 506 to the top and flips it to pour the soil into the seed-burying box 401. Thus, the seed-burying box 401 will continuously contain soil for burying corn seeds.

[0102] When the roller 313 rolls to the notch 317, the sponge plate 311 no longer applies pressure to the seeds. Air is then supplied to the air jet column 416 via the air pump 414 and the curved pipe 415. The air jet column 416 then sprays high-pressure gas, causing the seeds in the orienting box 306, with their tips pointing upwards, to fall rapidly into the soil in the seed-burying box 401 below under the pressure of the air. The compression of the soil particles helps maintain the upward-pointing position of the corn seeds. Then, the forward and reverse motors 407 rotate, driving the rotating column 404 to rotate. Because the surface of the rotating column 404 has spiral grooves 405 with gradually increasing spiral spacing, it drives the lifting seat 402 and the seed-burying box 401 to fall faster. The seed-burying box 401 descends... When the rotating plate 408 and the prying plate 411 come into contact, the rotating plate 408 is rotated to open the bottom of the seed-burying box 401. When the accelerating lifting seat 402 and the buffer plate 412 connected to the buffer spring come into contact, they can impact the seed-burying box 401. Then, under the action of inertia, the soil in the seed-burying box 401, along with the corn seeds with their tips pointing upwards, are discharged into the soil. Thus, the corn seeds that are pushed into the soil can germinate and grow in a flat cone-shaped state with their tips pointing upwards. This can ensure that the embryo can grow upwards smoothly when it breaks through the soil, reducing the resistance to breaking through the soil, which is conducive to the germination of seeds and the growth of seedlings. Therefore, it improves the breaking rate of corn seed embryos and the uniformity of seedling emergence.

[0103] Example 1

[0104] like Figure 6 As shown, in this embodiment, the replanting mechanism 200 includes: a replanting guide tube 201 fixedly connected to the side wall of the rear cover 102; a seed-protecting arc 202 formed in the replanting guide tube 201; a seed-cleaning brush 203 fixedly connected inside the replanting guide tube 201; a replanting wheel 204 rotatably connected to the replanting guide tube 201, and a plurality of holes are formed at equal intervals in an annular pattern on the outer wall of the replanting wheel 204; a replanting motor 205, the output end of which is fixedly connected to the center position of the replanting wheel 204; and a missed-seeding sensor 206 fixedly disposed on the outer wall of the rear cover 102.

[0105] In this embodiment, the missing seed sensor 206 in the replanting mechanism 200 detects the seed guide teeth in the synchronous seed guide belt 107. If no seed is detected in the seed guide tooth, it is determined to be a missed seed, and this seed guide tooth is then marked as a missed seed guide tooth. At this time, the output shaft of the replanting motor 205 drives the replanting wheel 204 to rotate. One or two corn seeds are automatically filled through the dimples opened on the surface of the replanting wheel 204. As the seed in the dimple rotates with the replanting wheel 204, excess seeds are brushed away by the seed cleaning brush 203, leaving only one seed in the dimple. At this time, the seed is then sent to the replanting guide tube. The seed-protecting arc 202 and the seed hole installed inside 201 provide protection. After the seed hole rotates past the seed-protecting arc 202, the seed will fall out of the seed hole under gravity. As the seed-replenishing guide tube 201 falls down the inner wall, the marked missed seed guide tooth rotates to the bottom of the seed-replenishing guide tube 201. At this time, the seed falls into the missed seed guide tooth, so that there is a seed on the back of the guide tooth. This allows the missed seed guide tooth to be replenished with corn seeds. The seed-replenishing mechanism 200 detects missed seeding and automatically replenishes seeds at the missed seeding location, thus effectively solving the problem of missed seeding and improving the efficiency of corn planting operations.

[0106] Example 2

[0107] like Figure 7-10 As shown, in this embodiment, the seed orientation mechanism 300 includes: a turntable 301 disposed at the bottom end of the rear cover 102; a double-groove synchronous pulley 302 fixedly sleeved on the central shaft of the turntable 301; a synchronous belt 303 sleeved on the outside of the double-groove synchronous pulley 302; a synchronous pulley 304 sleeved on one end of the synchronous belt 303, and the synchronous pulley 304 fixedly connected to the rotating shaft 105; a support plate 305 used to fix the seed orientation mechanism 300, the seed-burying mechanism 400, the furrowing mechanism 500 and the rear cover 102 together; multiple orientation boxes 306 are provided, arranged in a ring at equal intervals on one side of the turntable 301; protrusions 307 are fixedly disposed on the side wall of the orientation box 306; a V-groove 308 is opened at the center position of the orientation box 306; a sliding column 309 is fixedly connected to the outer wall of the orientation box 306, and the sliding column 309... 09 is slidably connected to turntable 301; compression spring 310 is fixedly connected to the end of sliding column 309; arc plate 315 is fixedly connected to support plate 305, and multiple vibration grooves are equidistantly arranged in annular pattern on arc plate 315, and protrusion 307 abuts against the inner wall of arc plate 315; directional box 306 includes: sponge plate 311 slidably connected to the inside of directional box 306; end of sliding column 312 is fixedly connected to the side wall of sponge plate 311 and slidably connected to directional box 306; roller 313 is rotatably connected to the end of sliding column 312; reset spring 314 is sleeved on the outside of sliding column 312, and one end is fixedly connected to the outer wall of directional box 306; abutting plate 316 and roller 313 slide against each other, the abutting plate 316 is provided with a slope, and the end of the abutting plate 316 is provided with a notch 317.

[0108] In practice, corn seeds are discharged from the seed outlet at the bottom of the rear cover 102 and fall into the orientation box 306. The seeds are guided by the V-groove 308, ensuring the flattened cone of the seed faces downwards within the groove. The rotating shaft 105, synchronous pulley 304, and synchronous belt 303 drive the double-groove synchronous pulley 302 to rotate, which in turn drives the turntable 301 to rotate multiple orientation boxes 306. During the rotation of the orientation box 306, the protrusions 307 on its outer wall slide against the arc-shaped plate 315. The protrusions 307 are intermittently embedded in the vibration grooves on the inner wall of the arc-shaped plate 315. Due to the sliding column 309 end... A compression spring 310 is connected to the part, so that the protrusion 307 always slides against the inner wall of the arc plate 315. This can drive the orienting box 306 to reciprocate in the horizontal direction. Therefore, during the vibration, some corn seeds that are not facing downwards will be adjusted in position until their tips are embedded in the V-groove 308 and remain stable. When the turntable 301 rotates, the roller 313 on one side of the orienting box 306 will roll along the inclined surface of the abutment plate 316. This will drive the sliding column 312 and the sponge plate 311 to move towards the inside of the orienting box 306. This allows the sponge plate 311 to clamp the corn seeds and prevent the corn seeds from falling out accidentally when the opening of the orienting box 306 is facing downwards.

[0109] Example 3

[0110] like Figure 11-12 As shown, in this embodiment, the seed-burying mechanism 400 includes: a seed-burying box 401 disposed directly below the directional box 306; a lifting seat 402 fixedly connected to the side wall of the seed-burying box 401; an embedding block 403 fixedly connected to the inner wall of the lifting seat 402; a rotating column 404 slidably sleeved inside the lifting seat 402; a spiral groove 405 where the embedding block 403 and the spiral groove 405 are slidably embedded and connected, and the spiral spacing of the spiral groove 405 gradually increases; a limiting frame 406 rotatably connected to the outside of the rotating column 404, and the limiting frame 406 is fixedly connected to the support plate 305; a forward and reverse motor 407 where the bottom end of the rotating column 404 is fixedly connected to the output end of the forward and reverse motor 407; and a rotating plate 408 rotatably connected to the bottom end of the rotating column 404. A torsion spring is fixedly installed at the rotation connection between the rotating plate 408 and the seed-burying box 401, attached to the bottom of the seed-burying box 401; two feed plates 409 are provided and symmetrically fixedly connected to the outer wall of the seed-burying box 401; the positioning frame 410 is fixedly connected to the bottom end of the limiting frame 406; the pry plate 411 is fixedly connected to the top of the positioning frame 410; the buffer plate 412 is provided at the bottom end of the limiting frame 406; two limiting rods 413 are provided and fixedly connected to the bottom of the buffer plate 412, and a buffer spring is sleeved on the outside of the limiting rod 413; the air pump 414 is provided at the top of the directional box 306; the bent pipe 415 is fixedly connected to the output end of the air pump 414; the jet column 416 is fixedly connected to the end of the bent pipe 415.

[0111] In practice, when the roller 313 rolls to the notch 317, the sponge plate 311 stops applying pressure to the seeds. Air is then supplied to the air jet column 416 via the air pump 414 and the curved pipe 415. The air jet column 416 then sprays high-pressure gas, causing the seeds in the orienting box 306 with their tips pointing upwards to fall rapidly into the soil in the seed-burying box 401 below under the pressure of the air. The compression of the soil particles helps maintain the upward-pointing position of the corn seeds. Then, the forward and reverse motors 407 rotate, driving the rotating column 404 to rotate. Since the surface of the rotating column 404 has spiral grooves 405 with gradually increasing spiral spacing, it drives the lifting seat 402 and the seed-burying box 401 to fall more rapidly. During the descent, the rotating plate 408 and the prying plate 411 collide, causing the rotating plate 408 to flip and open the bottom of the seed-burying box 401. When the accelerating lifting seat 402 and the buffer plate 412 connected to the buffer spring come into contact, they can impact the seed-burying box 401. Then, under the action of inertia, the soil in the seed-burying box 401, along with the corn seeds with their tips pointing upwards, are discharged into the soil. Thus, the corn seeds that are pushed into the soil can germinate and grow in a flat cone-shaped state with their tips pointing upwards. This ensures that the embryo can grow upwards smoothly when it breaks through the soil, reducing the resistance to breaking through the soil. This is beneficial to the germination of the seeds and the growth of the seedlings, thereby improving the breaking rate of the corn seed embryo and the uniformity of the emergence.

[0112] Example 4

[0113] like Figure 13 As shown, in this embodiment, the trenching mechanism 500 includes: a positioning plate 501 fixedly connected to the inner wall of the support plate 305; two rotating rollers 502 are provided and rotatably connected to the positioning plate 501; a second synchronous pulley 503 is fixedly connected to the end of the rotating roller 502; one end of a second synchronous belt 504 is sleeved with the second synchronous pulley 503, and the other end is sleeved with the double-groove synchronous pulley 302; a conveyor belt 505 is sleeved between the two rotating rollers 502; multiple soil-carrying plates 506 are provided and fixedly connected to the surface of the conveyor belt 505 at equal intervals; two connecting columns 507 are provided and fixedly connected to the outer wall of the positioning plate 501; and a soil-shoveling plate 508 is fixedly connected between the two connecting columns 507.

[0114] In practice, when the orienting box 306 rotates until its opening corresponds to the seed-burying box 401, the corn seeds are facing upwards. The synchronous pulley 503 is driven to rotate synchronously by the double-groove synchronous pulley 302 and the synchronous belt 504. Therefore, the conveyor belt 505 is driven to roll by the rotating roller 502. The seed metering device is usually installed on the tractor. As the tractor drives the ditching mechanism 500 to move, the shovel plate 508 digs a trench for sowing in a linear shape. The soil shoveled by the shovel plate 508 will accumulate and eventually fall onto the soil-carrying plate 506. Then, the conveyor belt 505 transports the soil-carrying plate 506 to the top and flips it to pour the soil into the seed-burying box 401. Thus, the seed-burying box 401 will continuously contain soil for burying corn seeds.

[0115] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0116] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precision seed metering device for corn with automatic reseeding, characterized in that, include: The seed metering mechanism (100) includes a front cover (101), a rear cover (102) is fixedly connected to one side of the front cover (101), and a seed outlet is provided at the bottom of the rear cover (102). The replanting mechanism (200) is fixedly installed on the outer wall of the rear cover (102); The seed orientation mechanism (300) is fixedly installed at the bottom of the rear cover (102); The seed-burying mechanism (400) is fixedly installed at the bottom end of the seed-orienting mechanism (300); The trenching mechanism (500) is located on one side of the seed-burying mechanism (400); The seeding organization (100) includes: Seed protection plate (103) is fixedly connected to the inner wall of the front cover (101); Seed box (104) is fixedly connected to the top of seed box (104) and communicates with the inside of front cover (101); The rotating shaft (105) is rotatably connected to the rear cover (102); The upper synchronous pulley (106) is fixedly sleeved with the rotating shaft (105) at its center position; A synchronous seed guide belt (107) is provided, with an upper synchronous wheel (106) sleeved at one end of the synchronous seed guide belt (107), and multiple seed guide teeth are provided at equal intervals on the outer wall of the synchronous seed guide belt (107); The lower synchronous pulley (108) is sleeved on the other end of the synchronous seed guide belt (107); The seeding organization (100) includes: The partition (109) is fixedly connected to the inner wall of the rear cover (102); The spoon wheel (110) has twenty-four spoon sockets and is fixedly connected to the center of the upper synchronous pulley (106). A drive motor (111) is fixedly connected to a rotating shaft (105) at its output end. Replanting agencies (200) include: The seed-replenishing guide tube (201) is fixedly connected to the side wall of the rear cover (102); The seed protection arc (202) is located in the seed replenishment guide tube (201); The seed cleaning brush (203) is fixedly connected inside the seed replenishment tube (201); The replanting wheel (204) is rotatably connected to the replanting guide tube (201), and multiple holes are equidistantly arranged in a ring on the outer wall of the replanting wheel (204); The replanting motor (205) is fixedly connected to the center of the replanting wheel (204); The leak sensor (206) is fixedly mounted on the outer wall of the rear cover (102); Seed orienting mechanism (300) includes: A turntable (301) is located at the bottom of the rear cover (102); The double-groove synchronous pulley (302) is fixedly sleeved on the central shaft of the turntable (301); Synchronous belt 1 (303) is sleeved on the outside of the double-groove synchronous pulley (302); Synchronous pulley 1 (304) is sleeved at one end of synchronous belt 1 (303), and synchronous pulley 1 (304) is fixedly connected to rotating shaft (105); Support plate (305) is used to fix the seed orientation mechanism (300), the seed burying mechanism (400), the trenching mechanism (500) and the rear cover (102) together; Multiple orientation boxes (306) are provided, arranged in a ring at equal intervals on one side of the turntable (301); The protrusion (307) is fixedly mounted on the side wall of the orientation box (306); V-groove (308) is formed at the center of the orientation box (306); Sliding post 1 (309) is fixedly connected to the outer wall of the orientation box (306), and sliding post 1 (309) is slidably connected to the turntable (301); A compression spring (310) is fixedly connected to the end of a sliding column (309); The arc plate (315) is fixedly connected to the support plate (305). Multiple vibration grooves are provided on the arc plate (315) at equal intervals in a ring. The protrusion (307) abuts against the inner wall of the arc plate (315). Orientation box (306) includes: The sponge board (311) is slidably connected to the inside of the orientation box (306); The sliding column 2 (312) is fixedly connected at its end to the side wall of the sponge plate (311) and slidably connected to the directional box (306); Roller (313) is rotatably connected to the end of sliding column two (312); The return spring (314) is sleeved on the outside of the sliding column (312), and one end is fixedly connected to the outer wall of the directional box (306); The abutment plate (316) and the roller (313) slide against each other. The abutment plate (316) is provided with an inclined surface and a notch (317) is provided at the end of the abutment plate (316).

2. The precision seed metering device for corn with automatic reseeding as described in claim 1, characterized in that, The seeding mechanism (400) includes: The seed-burying box (401) is located directly below the orientation box (306); The lifting seat (402) is fixedly connected to the side wall of the seed-burying box (401); An embedded block (403) is fixedly connected to the inner wall of the lifting seat (402); The rotating column (404) is slidably sleeved inside the lifting seat (402); The spiral groove (405) and the insert block (403) are slidably embedded in each other, and the spiral spacing of the spiral groove (405) gradually increases; The limiting frame (406) is rotatably connected to the outside of the rotating column (404), and the limiting frame (406) is fixedly connected to the support plate (305); The bottom end of the rotating column (404) of the forward and reverse motor (407) is fixedly connected to the output end of the forward and reverse motor (407); A rotating plate (408) is rotatably connected to the bottom of the seed-burying box (401), and a torsion spring is fixedly installed at the rotatable connection between the rotating plate (408) and the seed-burying box (401). Two feed plates (409) are provided and are symmetrically fixed to the outer wall of the seed-burying box (401); The positioning frame (410) is fixedly connected to the bottom end of the limiting frame (406); The pry plate (411) is fixedly connected to the top of the positioning frame (410); A buffer plate (412) is disposed at the bottom end of the limiting frame (406); There are two limit rods (413), which are fixedly connected to the bottom of the buffer plate (412). A buffer spring is sleeved on the outside of the limit rod (413).

3. A precision seed metering device for corn with automatic reseeding as described in claim 2, characterized in that, The seeding mechanism (400) includes: An air pump (414) is located on top of the directional box (306); The elbow (415) is fixedly connected to the output end of the air pump (414); The jet column (416) is fixedly connected to the end of the bend (415).

4. A precision seed metering device for corn with automatic reseeding as described in claim 3, characterized in that, The trenching mechanism (500) includes: The positioning plate (501) is fixedly connected to the inner wall of the support plate (305); Two rotating rollers (502) are provided and are rotatably connected to the positioning plate (501); Synchronous pulley two (503) is fixedly connected to the end of the rotating roller (502); Synchronous belt 2 (504) is connected at one end to synchronous pulley 2 (503) and at the other end to double groove synchronous pulley (302); The conveyor belt (505) is fitted between two rotating rollers (502); Multiple soil transport plates (506) are provided and are fixedly connected to the surface of the conveyor belt (505) at equal intervals.

5. A precision seed metering device for corn with automatic reseeding as described in claim 4, characterized in that, The trenching mechanism (500) includes: There are two connecting columns (507), which are fixedly connected to the outer wall of the positioning plate (501); The shovel plate (508) is fixedly connected between two connecting columns (507).

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