A quantitative seed metering device for a corn planter

Abstract

The application discloses a quantitative seed metering device of a corn seeding machine and relates to the technical field of agricultural planting. The quantitative seed metering device comprises a protective shell, a connecting fastener, a clamping block, a guide opening, a seed metering box and a plurality of groups of concave plates. The protective shell is used for storing corn seed material. The connecting fastener is fixedly installed on the top of the outer side of the protective shell. The connecting fastener is connected with the seeding machine through a screw rod. The clamping block is arranged in the middle of the outer side of the protective shell. The guide opening is arranged in the middle of the top of the protective shell. The seed metering box is used for seed screening and pretreatment. The seed metering box is provided with the plurality of groups of concave plates on one side of the bottom. The device can drive the corn seed material gathered on the surface of the convex block to move by the rotation of the arc rod and the material poking piece arranged on the surface of the circular ring along the middle shaft. Since the material poking piece and the arc rod are suspended in the bottom box, only a small amount of corn seed material in the convex block can be poked, so that the corn seed material is poked and falls to the surface of the feeding part, thereby controlling the falling amount of the corn seed material during the seed discharging.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting technology, specifically to a quantitative seeding device for a corn planter. Background Technology

[0002] Corn planters can greatly improve the efficiency of harvesting machinery and reduce labor intensity. A corn planter is a planting machine that sows corn seeds (while also accommodating other crops such as soybeans). Planters are usually named after the type of crop, such as corn planter, grain strip planter, corn hill planter, cotton planter, and pasture spreader.

[0003] Currently, existing corn planters have the problem of not being able to accurately control the amount of corn seed when distributing the seed mix. This results in the need for manual weeding after the corn is planted. Furthermore, they cannot accurately adjust the distance between corn plants, making them unsuitable for planting at different distances and reducing the applicability of corn planting. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a quantitative seed dispensing device for a corn planter, comprising a protective shell for storing corn seed material, a connecting fastener fixedly installed on the top outer side of the protective shell, a locking block provided in the middle of the outer side of the protective shell, and a material guide opening provided in the middle of the top of the protective shell.

[0005] A seed metering box is used for pre-treatment of corn seed by metering and screening. Multiple sets of concave plates are provided on one side of the bottom of the seed metering box, and each concave plate has a seed dispensing opening in its central recess. These seed dispensing openings are evenly distributed at the bottom of the seed metering box. A material feeding component is used to push the corn seed.

[0006] A feeding device is used to restrict the feeding of corn seeds, and a snap-fit ​​groove is fixedly installed on the surface of the feeding device;

[0007] The protective shell houses a seed metering box, which is fixedly installed inside by a locking block. A feeding component is rotatably mounted within the seed metering box, and this component is frictionally fitted to the bottom of the seed metering box. The feeding component is secured to the bottom of the seed metering box near the concave plate via a locking groove. The planting operator feeds corn seeds into the seed metering box through the feed inlet. Because the bottom of the seed metering box is inclined, the corn seeds follow the inclined direction. Since the planting amount needs to be controlled during planting, the feeding component pushes the inclined corn seeds outwards during feeding, allowing them to exit the seed metering box through the seed outlet in the middle of the concave plate. To prevent the corn seeds from clogging the seed outlet during discharge, a feeding component is installed inside the seed metering box. When the corn seeds are pushed out, they come into contact with the feeding component, causing it to rotate due to the thrust generated by the falling seeds, thus allowing the corn seeds to be discharged quickly.

[0008] The seed metering box includes an inner cover with a horizontal groove on its surface, which is opposite to the feed inlet. The bottom of the inner cover has a through hole, and a base box is fixedly installed at the bottom of the inner cover, connecting the inner cover to the base box via the through hole. The grower first feeds corn seeds into the inner cover through the feed inlet. The through hole at the bottom of the inner cover connects the inner cover to the base box, and the corn seeds fall into the base box through the through hole.

[0009] Preferably, an inclined plate is fixedly installed at the bottom of the base box, and an installation groove is formed on the surface of the base box near the inclined plate. A protrusion is provided on the lower side of the inclined plate, and the protrusion is frictionally adapted to the material feeding component. The inclined plate at the bottom of the base box allows the falling corn seeds to slide down the inclined plate along its inclination arc. At this time, the protrusion on the side of the inclined plate intercepts the sliding corn seeds, causing them to collect in the recessed area of ​​the protrusion.

[0010] Preferably, the feed feeding component includes a central shaft, which is fixedly connected to the output end of the motor via a coupling, and the central shaft is rotatably installed in the middle of the seed metering box. After the corn seeds are put into the seed metering box, the operator starts the seed metering machine to make it run. At this time, the operator starts the motor, causing the motor output end to drive the central shaft to rotate in the bottom box.

[0011] Preferably, the outer surface of the central shaft is fitted with a ring, and two sets of the ring are arranged symmetrically with the central shaft as the center.

[0012] Preferably, the surface of the ring is respectively provided with a material-pushing plate and an arc rod, which are distributed circumferentially on the surface of the ring. Each arc rod has a fitted curved rod on its surface, and both the fitted curved rod and the material-pushing plate are frictionally adapted to the protruding block. As the central shaft rotates, the material-pushing plate and arc rod on the surface of the ring push the corn seeds collected on the surface of the protruding block. Because the material-pushing plate and arc rod are suspended in the bottom box, they can only push a small amount of corn seeds within the protruding block, causing the corn seeds to fall onto the surface of the feeding component, thereby controlling the amount of corn seeds falling during discharge.

[0013] Preferably, the feeding plate includes a bent rod, a sleeve shaft is fitted on the surface of the bent rod, a feeding plate is fixedly installed on the surface of the sleeve shaft, an extension block is fixedly installed at the middle of the outer side of the feeding plate, and a ball is fixedly installed on the surface of the extension block. The rotation of the central shaft drives the ring to rotate. The bent rod and the fitting bent rod are distributed in a cross shape on the surface of the ring. As the ring rotates, the feeding plate moves the corn seed. When the extension block and the ball rotate, they contact the surface of the protruding block. The surface of the ball is relatively smooth, which avoids the feeding plate getting stuck on the surface of the protruding block. This allows the corn seed to be pushed outward from the concave part of the protruding block. Since there is a lot of corn seed in the bottom box, after the corn in the concave part of the protruding block is moved out, the feeding plate rotates away from the protruding block, and the fitting bent rod rotates to above the protruding block and moves the corn seed in the bottom box. This causes the corn seed to slide again on the inclined plate to supply corn seed during discharge, so as to make the discharge volume more uniform.

[0014] Preferably, the feeding component includes a support block, and a snap-fit ​​block is fixedly installed at the bottom of the support block, the snap-fit ​​block being snap-fitted into the mounting groove. The dispensing corn seeds fall onto the surface of the concave plate and the feeding component. The thrust generated when the corn seeds fall causes the rotating component to rotate on the surface of the extension block to adjust the distance between the rotating component and the seed discharge port, so as to facilitate the rapid discharge of the corn seeds.

[0015] Preferably, the top two sides of the support block are fixedly installed with retaining shafts, which extend through the support block to the inner wall of the bottom box and are fixedly installed with extension blocks. A rotating component is fixedly installed on the outer side of the extension blocks, and a spring is sleeved on the outer surface of the rotating component. When some corn seeds fall onto the surface of the feeding component, they contact the spring. The spring contracts upon impact with the corn seeds, causing the corn seeds to fall off the surface of the feeding component, thus avoiding waste.

[0016] Preferably, the rotary component includes a connecting rod, a rotating rod is rotatably mounted on the surface of the connecting rod away from the support block, a round shaft is sleeved on the surface of the rotating rod, and a rotary lever is fixedly mounted on the outer side of the round shaft.

[0017] Preferably, two rotary levers are provided, arranged opposite each other with the rotating rod as the center. A circular block is fixedly installed on the surface of the curved end of each rotary lever, and the corn seed is frictionally adapted to the circular block. The corn seed pushes the rotary lever to rotate on the surface of the rotating rod, causing the circular block to push the corn seed into the seed outlet, thus preventing simultaneous falling of corn seeds and blockage of the seed outlet, which would affect seed dispensing efficiency.

[0018] This invention provides a quantitative seeding device for a corn planter. It has the following beneficial effects:

[0019] 1. The quantitative seed discharging device of this corn planter uses a material-discharging plate and an arc rod set on the surface of the ring to move the corn seeds gathered on the surface of the protruding block as the central shaft rotates. Since the material-discharging plate and the arc rod are suspended in the bottom box, they can only move a small amount of corn seeds in the protruding block, causing the corn seeds to fall onto the surface of the feeding part, thereby controlling the amount of corn seeds falling during discharging.

[0020] II. The quantitative seed dispensing device of this corn planter rotates by rotating the central shaft, which drives the ring to rotate. The bent rod and the fitting bent rod are distributed in a cross shape on the surface of the ring. As the ring rotates, the paddle moves the corn seed. The extended block and the ball contact the surface of the protruding block when rotating. The surface of the ball is relatively smooth, which prevents the paddle from getting stuck on the surface of the protruding block. This pushes the corn seed from the concave part of the protruding block to the outside. Since there is a lot of corn seed in the bottom box, after the corn in the concave part of the protruding block is pushed out, the paddle rotates away from the protruding block. The fitting bent rod rotates to above the protruding block and moves the corn seed in the bottom box again, so that the corn seed slides again on the inclined plate to supply corn seed during dispensing, so as to make the dispensing amount more uniform.

[0021] Third, the quantitative seed discharging device of this corn planter uses the corn seed material that is dispensing to fall onto the surface of the concave plate and the feeding part. The thrust generated when the corn seed material falls causes the rotating part to rotate on the surface of the extension block to adjust the distance between the rotating part and the seed discharging port so that the corn seed material can be discharged quickly.

[0022] Fourth, the quantitative seed dispensing device of this corn planter works by having some corn seeds fall onto the surface of the feeding component and come into contact with a spring. The spring is compressed by the impact of the corn seeds, causing the corn seeds to fall off the surface of the feeding component, thus avoiding waste of corn seeds.

[0023] 5. The quantitative seed dispensing device of this corn planter uses corn seeds to push a rotary lever to rotate on the surface of the rotating rod, so that the round block is pushed by the rotary lever to drop the corn seeds into the seed dispensing port, avoiding the corn seeds falling at the same time and causing blockage of the seed dispensing port, which affects the seed dispensing efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external structure of a quantitative seed metering device for a corn planter according to the present invention;

[0025] Figure 2 This is a schematic diagram of the external structure of the quantitative seeding device of a corn planter according to the present invention from another angle;

[0026] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the seed metering box of the present invention;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the bottom box of the present invention;

[0028] Figure 5 This is an enlarged structural schematic diagram of the feeding component of the present invention;

[0029] Figure 6 This is a schematic diagram of the feeding component structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the rotating component structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the material feeding component structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the material feeding plate structure of the present invention.

[0033] In the diagram: 1. Feed guide port; 2. Connecting fastener; 3. Protective shell; 4. Seed metering box; 41. Inner cover; 42. Bottom box; 43. Horizontal groove; 44. Mounting groove; 45. Protruding block; 46. Inclined plate; 5. Seed metering port; 6. Inner concave plate; 7. Locking block; 8. Material feeding component; 81. Central shaft; 82. Fitting bent rod; 83. Ring; 84. Material feeding plate; 841. Bending rod; 842. Sleeve shaft; 843. Pulley; 844. Extension block; 845. Ball; 85. Arc rod; 9. Feeding component; 91. Support block; 92. Extension block; 93. Locking shaft; 94. Spring; 95. Rotating component; 951. Rotating lever; 952. Connecting rod; 953. Round shaft; 954. Round block; 955. Rotating rod; 96. Locking block. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0035] First embodiment, such as Figures 1-4 As shown, the present invention provides a technical solution: a quantitative seed dispensing device for a corn planter, including a protective shell 3, which is used for storing corn seed material. A connecting fastener 2 is fixedly installed on the top outer side of the protective shell 3, a locking block 7 is provided in the middle of the outer side of the protective shell 3, and a guide port 1 is provided in the middle of the top of the protective shell 3.

[0036] The seed metering box 4 is used for pre-treatment of corn seed by metering and screening. Multiple sets of concave plates 6 are provided on one side of the bottom of the seed metering box 4, and each concave plate 6 has a seed dispensing port 5 in its central recess. The seed dispensing ports 5 are evenly distributed at the bottom of the seed metering box 4. A feeding component 8 is used to push the corn seed.

[0037] Feeding component 9 is used for limiting the feeding of corn seeds. The surface of the feeding component 9 is fixedly equipped with a snap-fit ​​groove.

[0038] Inside the protective shell 3, a seed metering box 4 is fixedly installed via a locking block 7. A material feeding component 8 is rotatably installed in the cavity of the seed metering box 4. The material feeding component 8 is frictionally adapted to the bottom of the seed metering box 4. The feeding component 9 is locked in the bottom of the seed metering box 4 near the concave plate 6 via a locking groove. The sower puts the corn seeds into the seed metering box 4 through the feed inlet 1. Since the bottom of the seed metering box 4 is set in an inclined position, the corn seeds are inclined in the same direction. Since the sowing amount needs to be controlled during sowing, the material feeding component 8 pushes the corn seeds in the inclined position outward during feeding, so that the corn seeds are discharged from the seed metering box 4 through the seed metering port 5 in the middle of the concave plate 6. In order to prevent the corn seeds from blocking the seed metering port 5 during discharge, a feeding component 9 is set inside the seed metering box 4. When the corn seeds are pushed out, they will come into contact with the feeding component 9, so that the feeding component 9 is pushed by the seed falling and rotates to make the corn seeds discharge quickly.

[0039] The seed metering box 4 includes an inner cover 41. A transverse groove 43 is formed on the surface of the inner cover 41, opposite to the feed inlet 1. A through hole is formed at the bottom of the inner cover 41, and a bottom box 42 is fixedly installed at the bottom of the inner cover 41, connecting the inner cover 41 to the bottom box 42 through the through hole. The grower first feeds corn seeds into the inner cover 41 through the feed inlet 1. The through hole at the bottom of the inner cover 41 connects the inner cover 41 to the bottom box 42, and the corn seeds fall into the bottom box 42 through the through hole.

[0040] An inclined plate 46 is fixedly installed on the bottom of the base box 42. An installation groove 44 is opened on the surface of the base box 42 near the inclined plate 46. A protrusion 45 is provided on the lower side of the inclined plate 46, and the protrusion 45 is frictionally adapted to the feeding component 8. The inclined plate 46 at the bottom of the base box 42 allows the falling corn seeds to slide down the inclined arc of the inclined plate 46. At this time, the protrusion 45 on the side of the inclined plate 46 intercepts the sliding corn seeds, causing the corn seeds to collect in the recess of the protrusion 45.

[0041] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 5 to 7 As shown, the feeding component 9 includes a support block 91, and a snap-fit ​​block 96 is fixedly installed at the bottom of the support block 91. The snap-fit ​​block 96 is engaged with the mounting groove 44. The dispensing corn seeds fall onto the surface of the concave plate 6 and the feeding component 9. The thrust generated when the corn seeds fall causes the rotating component 95 to rotate on the surface of the extension block 92 to adjust the distance between the rotating component 95 and the seed discharge port 5, so as to facilitate the rapid discharge of the corn seeds.

[0042] A retaining shaft 93 is fixedly installed on both sides of the top of the support block 91. The retaining shaft 93 extends through the support block 91 to the inner wall of the bottom box 42 and is fixedly installed on an extension block 92. A rotating component 95 is fixedly installed on the outer side of the extension block 92, and a spring 94 is sleeved on the outer surface of the rotating component 95. When some corn seed falls onto the surface of the feeding component 9, it contacts the spring 94. The spring 94 is compressed by the impact of the corn seed, causing the corn seed to fall off the surface of the feeding component 9, thus avoiding waste of corn seed.

[0043] The rotating component 95 includes a connecting rod 952. A rotating rod 955 is rotatably mounted on the surface of the connecting rod 952 away from the support block 91. A round shaft 953 is sleeved on the surface of the rotating rod 955. A rotary lever 951 is fixedly mounted on the outer side of the round shaft 953.

[0044] Two rotary levers 951 are provided, positioned opposite each other around the rotating rod 955. A round block 954 is fixedly mounted on the curved end of each rotary lever 951, and the corn seed material rubs against the round block 954. The corn seed material pushes the rotary lever 951 to rotate on the surface of the rotating rod 955, causing the round block 954 to push the corn seed material into the seed discharge port 5, preventing simultaneous falling of corn seed material and potential blockage of the seed discharge port 5, thus affecting the seed discharge efficiency.

[0045] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 8 to 9 As shown, the feed feeding component 8 includes a central shaft 81, which is fixedly connected to the output end of the motor via a coupling, and the central shaft 81 is rotatably installed in the middle of the seed metering box 4. After the corn seeds are put into the seed metering box 4, the operator starts the seed metering machine to make it run. At this time, the operator starts the motor, which causes the output end of the motor to drive the central shaft 81 to rotate in the bottom box 42.

[0046] The outer surface of the central shaft 81 is fitted with a ring 83. There are two sets of rings 83, which are symmetrically arranged with the central shaft 81 as the center.

[0047] The surface of the ring 83 is respectively provided with a material-pushing plate 84 and an arc rod 85, which are distributed circumferentially on the surface of the ring 83. The surface of the arc rod 85 is fitted with a conforming curved rod 82, and the conforming curved rod 82 and the material-pushing plate 84 are both frictionally adapted to the protrusion 45. The material-pushing plate 84 and the arc rod 85 on the surface of the ring 83 rotate with the central shaft 81 to push the corn seeds gathered on the surface of the protrusion 45. Since the material-pushing plate 84 and the arc rod 85 are suspended in the bottom box 42, they can only push a small amount of corn seeds in the protrusion 45, causing the corn seeds to fall onto the surface of the feeding part 9, thereby controlling the amount of corn seeds falling during discharge.

[0048] The material-pulling plate 84 includes a bending rod 841, a sleeve shaft 842 is sleeved on the surface of the bending rod 841, a lever plate 843 is fixedly installed on the surface of the sleeve shaft 842, an extension block 844 is fixedly installed at the middle of the outer side of the lever plate 843, and a ball 845 is fixedly installed on the surface of the extension block 844. The rotation of the central shaft 81 drives the ring 83 to rotate. The bent rod 841 and the fitting bent rod 82 are distributed in a cross shape on the surface of the ring 83. As the ring 83 rotates, the dial plate 843 moves the corn seed material. The extension block 844 and the ball 845 contact the surface of the protrusion block 45 when rotating. The surface of the ball 845 is relatively smooth, which prevents the dial plate 843 from getting stuck on the surface of the protrusion block 45. This allows the corn seed material to be pushed outward from the recess of the protrusion block 45. Since there is a lot of corn seed material in the bottom box 42, after the corn in the recess of the protrusion block 45 is moved out, the dial plate 843 rotates away from the protrusion block 45. The fitting bent rod 82 rotates to above the protrusion block 45 and moves the corn seed material in the bottom box 42. This causes the corn seed material to slide again on the inclined plate 46 to supply corn seed material during discharge, so as to make the discharge amount more uniform.

[0049] In use, the sowing personnel put the corn seeds into the seed metering box 4 through the feed inlet 1. Since the bottom of the seed metering box 4 is set to be inclined, the corn seeds are inclined in the direction of inclination. Since the sowing amount needs to be controlled during sowing, the feed pusher 8 pushes the corn seeds in the inclined position outward during feeding, so that the corn seeds are discharged from the seed metering box 4 through the seed metering port 5 in the middle of the concave plate 6. In order to prevent the corn seeds from blocking the seed metering port 5 during discharge, a feeding device 9 is set in the seed metering box 4. When the corn seeds are pushed out, they will come into contact with the feeding device 9, so that the feeding device 9 is pushed by the seed falling and rotates to make the corn seeds discharge quickly.

[0050] The planting staff first put the corn seed into the inner cover 41 through the feed inlet 1. The bottom of the inner cover 41 has a through hole that connects the inner cover 41 to the bottom box 42. The corn seed falls into the bottom box 42 through the through hole.

[0051] The bottom of the bottom box 42 is provided with an inclined plate 46, which allows the falling corn seeds to slide down the inclined plate 46 along its inclined arc. At this time, the protrusion 45 on the side of the inclined plate 46 intercepts the sliding corn seeds, causing the corn seeds to gather in the recess of the protrusion 45.

[0052] After the corn seed is put into the seed metering box 4, the staff starts the seed metering machine to make it run. At this time, the staff starts the motor so that the motor output end drives the central shaft 81 to rotate in the bottom box 42.

[0053] The material-pushing plate 84 and the arc rod 85 on the surface of the ring 83 rotate with the central shaft 81 to push the corn seeds gathered on the surface of the protrusion block 45. Since the material-pushing plate 84 and the arc rod 85 are suspended in the bottom box 42, they can only push a small amount of corn seeds in the protrusion block 45, causing the corn seeds to fall onto the surface of the feeding part 9, thereby controlling the amount of corn seeds falling during discharge.

[0054] The rotation of the central shaft 81 drives the ring 83 to rotate. The bent rod 841 and the fitting bent rod 82 are distributed in a cross shape on the surface of the ring 83. As the ring 83 rotates, the dial plate 843 moves the corn seed material. The extension block 844 and the ball 845 contact the surface of the protrusion block 45 when rotating. The surface of the ball 845 is relatively smooth, which prevents the dial plate 843 from getting stuck on the surface of the protrusion block 45. This allows the corn seed material to be pushed outward from the recess of the protrusion block 45. Since there is a lot of corn seed material in the bottom box 42, after the corn in the recess of the protrusion block 45 is moved out, the dial plate 843 rotates away from the protrusion block 45. The fitting bent rod 82 rotates to above the protrusion block 45 and moves the corn seed material in the bottom box 42. This causes the corn seed material to slide again on the inclined plate 46 to supply corn seed material during discharge, so as to make the discharge amount more uniform.

[0055] The corn seeds are ejected and fall onto the surface of the concave plate 6 and the feeding part 9. The thrust generated when the corn seeds fall causes the rotating part 95 to rotate on the surface of the extension block 92 to adjust the distance between the rotating part 95 and the seed discharge port 5 so that the corn seeds can be discharged quickly.

[0056] When some corn seed falls onto the surface of the feeding part 9, it comes into contact with the spring 94. The spring 94 contracts due to the impact of the corn seed, causing the corn seed to fall off the surface of the feeding part 9, thus avoiding waste of the corn seed.

[0057] The corn seed pushes the rotary lever 951 to rotate on the surface of the rotating rod 955, causing the round block 954 to be pushed by the rotary lever 951 to fall into the seed discharge port 5, thus preventing the corn seed from falling at the same time and causing blockage of the seed discharge port 5, which would affect the seed discharge efficiency.

[0058] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A quantitative seed metering device for a corn planter, characterized in that, Include: Protective shell (3) for corn seed material discharge storage, the outer top of the protective shell (3) is fixedly installed with connecting fastener (2), the outer middle of the protective shell (3) is provided with clamping block (7), the top middle of the protective shell (3) is provided with guide hole (1); Seed box (4) for corn seed material seed row screening pretreatment, the bottom of the seed box (4) is provided with a plurality of groups of inner recessed plates (6), and the recessed plates (6) are provided with seed discharge ports (5) in the middle recessed portions, and the seed discharge ports (5) are uniformly distributed on the bottom of the seed box (4); The material pushing part (8) is used for pushing corn seed material, The material feeding part (9) is used for limiting seed row of corn seed material, and the surface of the material feeding part (9) is fixedly installed with clamping groove; The inside of the protective shell (3) is fixedly installed with the seed box (4) through the clamping block (7), the cavity of the seed box (4) is rotatably installed with the material pushing part (8), the material pushing part (8) is frictionally matched with the bottom of the seed box (4), and the material feeding part (9) is clamped on the bottom of the seed box (4) close to the inner recessed plate (6) through the clamping groove; Wherein, the seed box (4) comprises an inner cover (41), the surface of the inner cover (41) is provided with a horizontal groove (43), the horizontal groove (43) is arranged opposite to the guide hole (1), the bottom of the inner cover (41) has a through hole, the inner cover (41) is fixedly installed with a bottom box (42) through the through hole, and the inner cover (41) is communicated with the bottom box (42) through the through hole; The bottom of the bottom box (42) is fixedly installed with an inclined plate (46), the surface of the bottom box (42) close to the inclined plate (46) is provided with a mounting groove (44), the lower side of the inclined plate (46) is provided with a protruding block (45), and the protruding block (45) is frictionally matched with the material pushing part (8); The material pushing part (8) comprises a middle shaft rod (81), and the middle shaft rod (81) is rotatably installed in the middle of the inside of the seed box (4); The outer surface of the middle shaft rod (81) is sleeved with a circular ring (83), the circular ring (83) is provided with two groups, and the two groups of circular rings (83) are symmetrically arranged with the middle shaft rod (81) as the center; The surface of the circular ring (83) is respectively provided with a material pushing piece (84) and an arc rod (85), the material pushing piece (84) and the arc rod (85) are circumferentially distributed on the surface of the circular ring (83), the surface of the arc rod (85) is sleeved with a matching bending rod (82), and the matching bending rod (82) and the material pushing piece (84) are frictionally matched with the protruding block (45); The material pushing piece (84) comprises a bending rod (841), the surface of the bending rod (841) is sleeved with a sleeve shaft (842), the surface of the sleeve shaft (842) is fixedly installed with a pushing plate (843), the outer middle of the pushing plate (843) is fixedly installed with an extension block (844), and the surface of the extension block (844) is fixedly installed with a spherical ball (845).

2. A metering device for a corn planter according to claim 1, wherein: The feeding part (9) comprises a supporting block (91), the bottom of the supporting block (91) is fixedly provided with a clamping block (96), and the clamping block (96) is clamped and matched with the mounting groove (44).

3. A metering device for a corn planter according to claim 2, wherein: The two sides of the top of the supporting block (91) are fixedly provided with clamping shafts (93), the clamping shafts (93) extend through the supporting block (91) to the inner wall of the bottom box (42) and are fixedly provided with extension blocks (92), the outer side of the extension block (92) is fixedly provided with a rotating part (95), and the outer surface of the rotating part (95) is sleeved with a spring (94).

4. A metering device for a corn planter according to claim 3, wherein: The rotating part (95) comprises a connecting rod (952), the surface, away from the supporting block (91), of the connecting rod (952) is rotatably provided with a rotating rod (955), the surface of the rotating rod (955) is sleeved with a circular shaft (953), and the outer side of the circular shaft (953) is fixedly provided with a rotating lever (951).

5. A metering device for a corn planter according to claim 4 wherein: The rotating lever (951) is provided with two, the two rotating levers (951) are oppositely arranged with the rotating rod (955) as the center, the surface of the curved end of the rotating lever (951) is fixedly provided with a circular block (954), and the circular block (954) is matched with the corn seed material in friction.

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