A seeding device for a hole seeder

Abstract

The invention discloses a seeding device for a hole seeder, which relates to the technical field of agricultural tools and comprises a seeding cavity. Two opening and closing nozzles are arranged on the lower side of the seeding cavity, at least one of the opening and closing nozzles is hinged to the seeding cavity and rotates to open toward the side of the seeding cavity, a connecting rod group is arranged on the opening and closing nozzle, a grounding plate is arranged on the lower side of the connecting rod group, the grounding plate contacts with the soil and pushes the connecting rod group upward, and the opening and closing nozzle hinged to the seeding cavity is driven by the connecting rod group to rotate to open toward the side of the seeding cavity, and the rotation direction is perpendicular to the moving direction of the hole seeder, and an elastic component for restoring closure is arranged between the two opening and closing nozzles.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural implements, and in particular to a seeding device for a hole seeder. Background Art

[0002] The bill hole seeder is a device commonly used for precision seeding, especially for hole seeders or seed drills. Its name comes from its shape similar to a duckbill, which can accurately make holes and place seeds in the soil to ensure that the seeds are sown at the preset depth and spacing. It mainly consists of a duckbill hole opener, a seed guide tube, a control system and a covering device. The duckbill hole opener is composed of two "duckbills" made of metal or high-strength plastic, which can be inserted into the soil and make holes. The seeds fall into the duckbill through the guide tube and are accurately placed in the opened holes. Then the covering device covers the soil on the seeds, and the compacting wheel or soil compacting device gently compacts the soil to ensure that the seeds are in close contact with the soil. It is widely used in field crops such as corn, cotton, and soybeans, as well as vegetables such as pumpkins and watermelons. The seeding device is a duckbill structure. In the prior art, the duckbill opens and closes back and forth. The seed drill rolls forward and the duckbill is inserted into the soil. When leaving the soil, the side wings contact the soil and open, and the seeds fall. However, if this technical solution is used at too fast a speed, the seeds will be pushed away by the duckbill before they have time to fall. Because the duckbill opens and closes back and forth, the duckbill located at the rear will change the position of the seeds, which greatly affects the survival rate of the seeds and reduces the sowing speed. Summary of the invention

[0003] In view of the above technical problems, the present invention discloses a seeding device for a hole seeder, comprising a sowing chamber, two opening and closing mouths are arranged on the lower side of the sowing chamber, at least one of the opening and closing mouths is hinged to the sowing chamber and rotates to open to the side of the sowing chamber, a connecting rod group is arranged on the opening and closing mouth, a grounding plate is arranged on the lower side of the connecting rod group, the grounding plate contacts the soil and pushes the connecting rod group upward, and the opening and closing mouth hinged to the sowing chamber is driven by the connecting rod group to rotate to open to the side of the sowing chamber, the rotation direction is perpendicular to the moving direction of the hole seeder, and an elastic component for restoring closure is arranged between the two opening and closing mouths; during the high-speed operation of the hole seeder, the opening and closing mouths are continuously opened and closed, and the seeds may be pushed away when the speed is too fast, but if the side opening is adopted, after the seeds fall, the hole seeder will not touch the seeds again when it moves, so even if the speed is accelerated, it will not affect the position of the seeds. The survival rate and the sowing speed are improved.

[0004] Furthermore, the lower parts of the two opening and closing mouths are respectively provided with a sowing duckbill one and a sowing duckbill two, a sowing opening is arranged in the grounding plate, and the sowing duckbill one and the sowing duckbill two extend to the lower side of the grounding plate through the sowing opening.

[0005] Furthermore, the sowing duck bill one and the sowing duck bill two are in the shape of a triangular pyramid, the interior of the opening and closing mouth is a square cavity, and the interior of the sowing duck bill one and the sowing duck bill two is a triangular cavity; the shape of the triangular pyramid is easier to break the soil, and inserting into the soil is easier and more labor-saving, which will reduce the energy consumption of the hole seeder.

[0006] Furthermore, the bottom end of the sowing duckbill 1 is longer than the bottom end of the sowing duckbill 2, and the inclined surfaces of the sowing duckbill 1 and the sowing duckbill 2 face the direction in which the seed drill moves. The design of one long and one short can prevent grass from being caught between the sowing duckbill, which would make it difficult for the bottom to break the soil. With the design of one long and one short, even if grass is caught, the longer sowing duckbill will break the soil without being affected.

[0007] Furthermore, the bottom surface of the grounding plate is arc-shaped, and the radius of the arc is equal to the distance from the center of the seeding wheel to the soil. When the grounding plate is not squeezed, the bottom surface of the grounding plate is eccentrically arranged with the seeding wheel of the hole seeder, and is arranged on the rotation radius of the seeding cavity. Before the sowing duckbill one and the sowing duckbill two are inserted into the soil to be completely perpendicular to the soil, one end of the bottom surface of the grounding plate contacts the soil, and the grounding plate leaves the soil after the sowing duckbill one and the sowing duckbill two completely leave the soil. After leaving the soil, the closing of the sowing duckbill can ensure that the seeds fall completely, and will not clamp the soil when closing. If the soil is clamped, the closure will not be tight, and there is a risk of seeds falling.

[0008] Furthermore, when the opening and closing mouth is closed, the side of the opening and closing mouth fits the side of the sowing cavity, which can ensure that there is no excessive resetting, and the two opening and closing mouths will not swing left and right when closed. The hinge axis of the opening and closing mouth and the sowing cavity is higher than the highest point of the side of the opening and closing mouth.

[0009] Furthermore, when the two opening and closing mouths are closed, a V-shaped gap is formed, and the bottom end of the gap is higher than the bottom end of the sowing cavity. The V-shaped gap can ensure that the opening and closing mouth and the sowing duckbill are completely closed. Even if particles such as sand are mixed in the position of the V-shaped gap, it will not cause the lower side to be unable to close.

[0010] Furthermore, the opening and closing mouth includes an opening and closing mouth 1 and an opening and closing mouth 2, both of which are hinged to the sowing chamber, and the connecting rod group includes a connecting rod 1 and a connecting rod 2, connecting rod 1 is hinged to the opening and closing mouth 2, and connecting rod 2 is hinged to the opening and closing mouth 1, and the lower ends of connecting rod 1 and connecting rod 2 are jointly hinged to a grounding plate, and the grounding plate pushes connecting rod 1 and connecting rod 2 upward to drive opening and closing mouth 1 and opening and closing mouth 2 to rotate in the opposite direction to open.

[0011] Furthermore, the opening and closing mouth includes an opening and closing mouth 1 and an opening and closing mouth 2, the opening and closing mouth 2 is hinged to the sowing chamber, and the opening and closing mouth 1 is fixedly connected to the sowing chamber, and the connecting rod group includes a connecting rod 1 and a connecting rod 2, the connecting rod 1 is hinged to the opening and closing mouth 2, and the connecting rod 2 is hinged to the opening and closing mouth 1, and the lower ends of the connecting rod 1 and the connecting rod 2 are jointly hinged to a grounding plate, and the grounding plate pushes the connecting rod 1 and the connecting rod 2 upward, and the connecting rod 1 drives the opening and closing mouth 2 to rotate away from the opening of the closing mouth 1.

[0012] Furthermore, the opening and closing mouth includes an opening and closing mouth 1 and an opening and closing mouth 2, the opening and closing mouth 1 is fixedly mounted on the sowing chamber, the opening and closing mouth 2 is hinged on the sowing chamber, the connecting rod group includes a connecting rod 1, a connecting short shaft and a limit bar, the connecting rod 1 is hinged to the opening and closing mouth 2, a connecting short shaft is fixedly mounted on a lower end of the connecting rod, the limit bar is fixedly mounted on the opening and closing mouth 1, a grounding plate is hinged on the connecting short shaft, the circumferential surface of the connecting short shaft is in contact with the side of the limit bar, and the grounding plate moves vertically along the side of the limit bar.

[0013] The beneficial effects of the present invention compared with the prior art are:

[0014] (1) Through the technical solution of the present invention, during the high-speed operation of the seed drill, the opening and closing mouth is continuously opened and closed, and the side opening is adopted. After the seeds fall, the seed drill will not touch the seeds again when it moves, and the opening and closing mouth is away from both sides of the seeds, so even if the speed is increased, it will not affect the position of the seeds. The survival rate and the speed of sowing are improved.

[0015] (2) Through the technical solution of the present invention, under natural circumstances, the lower ends of the opening and closing mouths 1 and 2 are in contact and vertically downward. At this time, the sides of the opening and closing mouths 1 and 2 are in contact with the sides of the sowing chamber. Therefore, as long as the opening and closing mouths 1 and 2 remain closed, they are limited by the side of the sowing chamber and cannot swing left and right in the closed state, and they are always stable and downward.

[0016] (3) Through the technical solution of the present invention, when the sowing duck bills 1 and 2 leave the soil, the planes of the sowing duck bills 1 and 2 leave first, and in the opposite direction of the seeds. The inclined surface will pass through the seeds. At this time, if the seeds fall in a position biased towards one of the sowing positions, the inclined surface of the side surface will straighten the seeds and will not fly away, thereby greatly improving the survival rate. If the planes of the sowing duck bills 1 and 2 pass through the seeds, the seeds may contact the horizontal surface. If the speed is too fast, the seeds will be deviated or fly out.

[0017] (4) The grounding plate is squeezed by the soil and moves upward relative to the sowing chamber. The opening and closing mouths 1 and 2 are driven to open through the connecting rods 1 and 2, and the seeds fall. The sowing wheel continues to move. The grounding plate is squeezed by the soil, and the axis of the sowing wheel coincides with the center point of the arc on the grounding plate. Therefore, the grounding plate is always in a squeezed state, and the sowing duckbill 1 and the sowing duckbill 2 remain in an open state. When the sowing duckbill 1 and the sowing duckbill 2 rotate away from the soil, the grounding plate is no longer in contact with the soil. At this time, the elastic component pulls the opening and closing mouths 1 and 2, causing the sowing duckbill 1 and the sowing duckbill 2 to close. At this time, the closure will not clamp soil between the sowing duckbill 1 and the sowing duckbill 2, preventing the soil from clamping and causing the closure to be loose, causing the seeds to fall prematurely, and reducing the seed survival rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is an overall schematic diagram of the opening and closing mouth and the sowing duckbill of the present invention.

[0020] Figure 3 It is a partial cross-sectional view of the connection part between the opening and closing nozzle and the sowing chamber of the present invention.

[0021] Figure 4 for Figure 3 Cross-sectional view at FF.

[0022] Figure 5 Schematic diagram of two working states of the present invention.

[0023] Figure 6 It is a schematic diagram of the overall structure of the third embodiment of the present invention.

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0025] Figure numbers: 1-seeding cavity; 2-cavity connecting ear; 3-opening and closing mouth one; 4-opening and closing mouth two; 5-connecting rod one; 6-connecting rod two; 7-grounding plate; 8-hinge block; 9-side support plate; 10-seeding opening; 11-weight reduction hole; 12-upper hinged rod; 13-mounting rod; 14-lower hinged rod; 15-seeding duckbill one; 16-seeding duckbill two; 17-square cavity; 18-triangular cavity; 19-connecting short shaft; 20-limiting strip; 21-soil; 22-tension spring rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1-Figure 7 As shown, a seeding device of a hole seeder is installed on the seeding wheel of the hole seeder, and the seeding wheel can roll forward or move up and down and be inserted into the soil 21, and follow the movement of the seeding wheel and be inserted into the ground for seeding, comprising a seeding chamber 1, and two opening and closing mouths are arranged on the lower side of the seeding chamber 1, at least one of the opening and closing mouths is hinged to the seeding chamber 1, and rotates toward the side of the seeding chamber 1 to form an opening (in this embodiment, the movement direction of the hole seeder is front and back, front and back edges, front and back sides, and front and back directions, and the left and right directions are side, side, and side), a connecting rod group is arranged on the opening and closing mouth, and a grounding plate 7 is arranged on the lower side of the connecting rod group, and the grounding plate 7 contacts with the soil 21 and pushes the connecting rod group upward, and the opening and closing mouth hinged to the seeding chamber 1 is driven by the connecting rod group to rotate toward the side of the seeding chamber 1 to open, and the rotation direction is perpendicular to the movement direction of the hole seeder, and an elastic component for restoring closure is arranged between the two opening and closing mouths. With the above technical solution, during the high-speed operation of the seed drill, the opening and closing mouth is constantly opening and closing. When the speed is too fast, the seeds may be knocked away. However, if the side opening is adopted, after the seeds fall, the opening and closing mouth is located on both sides of the seeds, and the seed drill will not touch the seeds when moving forward and backward. Therefore, even if the speed is increased, it will not affect the position of the seeds. The survival rate and the speed of sowing are improved.

[0028] Embodiment 1: Figure 1 As shown, the seeding cavity 1 is a square tube, or is formed by welding four steel plates. The present embodiment adopts a square tube, which has low cost and is easy to process. Two cavity connecting ears 2 are fixedly mounted on the upper end of the seeding cavity 1, specifically by welding. The two cavity connecting ears 2 are located on two opposite sides of the seeding cavity 1, specifically on the side sides, and are connected to the seeding wheel of the seed drill through the cavity connecting ears 2.

[0029] like Figure 2 and Figure 3As shown, in this embodiment, the opening and closing mouth specifically includes an opening and closing mouth 1 3 and an opening and closing mouth 2 4, the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are arranged inside a square cavity 17, the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are hinged on the sowing cavity 1, the rotation opening and closing direction of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 is perpendicular to the moving direction of the seed drill, and is a side rotation opening, specifically, the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are provided with hinge holes, and the upper ends of the front and rear surfaces of the sowing cavity 1 are fixedly provided with Two upper hinged rods 12, the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are hinged on the upper hinged rod 12, the opening and closing mouth rotates to both sides, and the lower ends are separated to form an opening, and the seeds can fall. Under natural circumstances, the lower ends of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are in contact and vertically downward. At this time, the sides of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are in contact with the sides of the sowing chamber 1, so as long as the opening and closing mouth 1 3 and the opening and closing mouth 2 4 remain closed, they cannot swing left and right and are always stable downward.

[0030] In this embodiment, the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are C-shaped surrounded by steel plates, the two short sides are the front and back sides, and the long sides are the side faces. Figure 3 As shown, the hinge holes are arranged on the front and rear surfaces, and the highest points of the sides are lower than the axis of the hinge holes, that is to say, the highest points of the sides of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are lower than the rotation axis, and the upper edge lines of the front and rear surfaces of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are inclined edges that gradually decrease toward the sides. As long as the sides of the opening and closing mouths are ensured to be lower than their corresponding rotation axis, the opening and closing mouths 1 3 and the opening and closing mouth 2 4 can leave the sides of the sowing chamber 1 from the fitted state when they rotate sideways. If the sides of the opening and closing mouths are higher than the rotation axis, the fitted state is a stuck state, because the sides of the opening and closing mouths move upward when they rotate, and the sides are lower than the axis, so that they can gradually become farther away from the sides of the sowing chamber 1 when they rotate, and vice versa. However, the edge of the opening and closing mouth has already fitted the sides of the sowing chamber 1 and cannot rotate.

[0031] In this embodiment, when the upper ends of the sides of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are again fitted with the sides of the sowing chamber 1, they cannot continue to open. When the opening and closing mouth 1 3 and the opening and closing mouth 2 4 remain closed, the adjacent edges of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 form a V-shaped gap, and the lowest point of the gap is higher than the bottom surface of the sowing chamber 1, so that the lower side of the sowing chamber 1 remains closed when closed. The V-shaped gap is set to ensure that the bottom end can be closed. If the gap is not set, there will be dimensional deviations during the production process, and the upper end will protrude slightly, and the lower end will not be able to close. Or during use, the upper end may be stuck with clay or fine sand, which will also cause the lower end to be unable to close. The V-shaped gap is set to greatly reduce the impact of the above situation. At the same time, the lower end will not expose the bottom of the sowing chamber 1 when it is closed. In other embodiments, it can also be a gap of other shapes, as long as the upper end is not completely fitted.

[0032] In this embodiment, if Figure 3As shown, mounting rods 13 are fixedly installed on the front and rear surfaces of the opening and closing mouth 1 3 and the opening and closing mouth 2 4, and an elastic component is fixedly installed between the two mounting rods 13. The elastic component can be a tension spring rod 22 or an elastic rubber ring. In this embodiment, the tension spring rod 22 is used. The tension spring rod 22 has a long service life. In the natural state, the tension spring rod 22 drives the opening and closing mouth 1 3 and the opening and closing mouth 2 4 to maintain a closed state, and the tension spring rod 22 is in a slightly stretched state, so that a certain pressure is maintained between the opening and closing mouth 1 3 and the opening and closing mouth 2 4 when closed, so that it will not be opened during the natural movement process, and can only be opened by applying a certain force.

[0033] In this embodiment, if Figure 3 , Figure 4 As shown, a sowing duckbill 16 is fixedly mounted on the bottom end of the opening and closing mouth 4, and the opening and closing mouth 4 and the sowing duckbill 16 are integrally formed and can be cast by open mold. A sowing duckbill 15 is fixedly mounted on the bottom end of the opening and closing mouth 3, and the opening and closing mouth 3 and the sowing duckbill 15 are also integrally cast. The exterior of the sowing duckbill 15 and the sowing duckbill 16 are in the shape of a triangular pyramid, and the cross-sectional shapes of the whole formed by the opening and closing mouth 4 and the sowing duckbill 16 from top to bottom are rectangular, trapezoidal, and triangular, respectively. Finally, the triangle becomes smaller and smaller and converges to a point. The sowing duckbill 15 and the sowing duckbill 16 close as the opening and closing mouth closes. As a whole, when the two sowing duckbills are closed, the lower ends are pointed, which is more conducive to breaking the soil. When the sowing duckbill 15 and the sowing duckbill 16 are closed, the cross-section is an isosceles triangle (such as Figure 4 ), the vertex of the cross-section triangle is located in the direction of the seed drill forward, and the outer tip is located at the front side, and the inclined surface of the sowing duckbill 15 and the sowing duckbill 2 16 is located in the direction of advance, and the bottom side of the triangle formed by the cross-section of the sowing duckbill 15 and the sowing duckbill 2 16 is located at the rear. The seed drill moves forward, and the lower part of the sowing wheel rotates backward. The seeds are located between the sowing duckbill 15 and the sowing duckbill 2 16. In other words, the two sowing duckbills are located on the left and right sides of the middle, and the sowing duckbill 15 and the sowing duckbill 2 16 leave the soil In the process of moving the soil 21, whether following the sowing wheel to roll backward or following the seed drill to move forward, it is in the front and back direction and does not affect the seeds. The planes of the sowing duckbill 15 and the sowing duckbill 16 leave first and are toward the back of the seeds. The inclined surface will pass through the seeds. At this time, it is in the open state. The sides of the sowing duckbill 15 and the sowing duckbill 16 will still drive a part of the soil because the sides are inclined. However, since they are on the left and right sides of the seeds, pushing the soil to gather in the middle can only affect the seeds, and its effect is minimal.

[0034] Specifically, in this embodiment, if Figure 4 If the seeds fall on Figure 4 The left position of the sowing duckbill 15 and the sowing duckbill 2 16, at this time, if it is to Figure 4The upper side movement is to straighten the seeds by the inclined surface of the sowing duckbill 16. Figure 4 The lower side of the sowing duckbill 16 moves, and the horizontal surface of the sowing duckbill 16 will drive the seeds to follow. If the speed is too fast, the seeds will be pushed away (about Figure 4 An example description, direction refers to Figure 4 the position of the drill, not the position of the entire drill).

[0035] In other embodiments, the opening and closing mouth 1 3 and the opening and closing mouth 2 4 can be made longer, with the lower end closed, and directly inserted into the soil for sowing. In this embodiment, for the convenience of explanation, it is divided into two parts: the opening and closing mouth and the sowing duckbill for description, so only describing the opening and closing mouth can also represent a structure that can be inserted into the soil 21, but the shape of the lower end of the opening and closing mouth is not limited.

[0036] The specific principle is as follows Figure 5 As shown, in this figure, the right side is the direction of the seed drill's advance, and the left side near the soil 21 is the direction of rotation of the seeding wheel. At this time, the left side of the seeding duckbill 15 and the seeding duckbill 2 16 is a plane, and the right side is an inclined surface. The left side B is a schematic diagram of the position of this embodiment about to leave the soil 21, and the right side C is a schematic diagram of the position of this embodiment about to enter the soil 21. The seeding duckbill 2 16 opens during the movement to the left, and the seeds fall, and continue to move to the left. The side inclined surface of the seeding duckbill 15 passes through the seeds, and the plane on the left will not pass through the seeds, so the seed position is not easy to change.

[0037] like Figure 2 As shown, a square cavity 17 is arranged in the opening and closing mouth, and a triangular cavity 18 is arranged in the sowing duckbill 15 and the sowing duckbill 16. The shape of the square cavity 17 is adapted to the opening and closing mouth as a rectangle, and the shape of the triangular cavity 18 is adapted to the sowing duckbill 15 and the sowing duckbill 16, and gradually converges to a point. The lengths of the lower ends of the sowing duckbill 15 and the sowing duckbill 16 are different, specifically, the sowing duckbill 15 is longer than the sowing duckbill 16. There is a distance between the lower end of the triangular cavity 18 and the lowermost end of the sowing duckbill 15, that is, this distance is a plane, and there is also a distance between the lower end of the triangular cavity 18 and the lowermost end of the sowing duckbill 16. The lowermost end of the sowing duckbill 16 is below the triangular cavity 18 on the sowing duckbill 15. When the seeds fall, they fall from the triangular cavity 18 to the planes at the lower ends of the sowing duckbill 15 and the sowing duckbill 16. After falling, the seeds are less likely to be affected by the movement of the two sowing duckbills.

[0038] In this embodiment, if Figure 1 , Figure 3As shown, the connecting rod group includes a connecting rod 1 5 and a connecting rod 2 6, the connecting rod 1 5 is hinged on the opening and closing mouth 2 4, the connecting rod 2 6 is hinged on the opening and closing mouth 1 3, and the lower front and rear parts of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 are fixedly equipped with a lower hinged rod 14, the connecting rod 1 5 and the connecting rod 2 6 are hinged by the lower hinged rod 14, and the lower hinged rod 14 is located at the position farthest from the upper hinged rod 12 on the front and rear surfaces. When the distance is long, it is more labor-saving to rotate, and the long stroke can also more accurately control the opening and closing degree. Because the soil 21 to be sown is soft soil, the contact between the ground plate 7 and the soil 21 will inevitably press the soil 21 downward, so the design of the ground plate 7 is to be able to move a longer distance, and the opening distance of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 is smaller, to ensure that they can be fully opened. After fully opened, the ground plate 7 will compress the soil 21 to a certain extent, and the connecting rod 1 5 and the connecting rod The bottom ends of the two hinged rods 6 are hinged together on the grounding plate 7, which may not be at the same point, but the distance between the two hinged points must be smaller than the distance between the two lower hinged rods 14. In the present embodiment, the connecting rod 1 5 and the connecting rod 2 6 are hinged together, and a hinge block 8 is fixedly mounted on the grounding plate 7. The grounding plate 7 is connected to the connecting rod assembly through the hinge block 8. The connecting rod 1 5 and the connecting rod 2 6 are hinged together on the hinge block 8 at the same point. The angle formed by the connecting rod 1 5 and the connecting rod 2 6 is not less than ninety degrees. When the closed state is maintained, the angle formed by the connecting line of the upper hinged rod 12 and the lower hinged rod 14 and the connecting rod 2 6 or the connecting rod 1 5 is preferably ninety degrees. At this time, it is equivalent to pushing along the tangent, which is more labor-saving. The angle between the connecting rod 1 5 and the connecting rod 2 6 is not less than ninety degrees, which can also make it more labor-saving to push the opening and closing mouth 1 3 and the opening and closing mouth 2 4 when the grounding plate 7 rises.

[0039] In this embodiment, if Figure 1 As shown, a sowing opening 10 is provided on the grounding plate 7, and the sowing opening 10 is close to the front end of the grounding plate 7 in the rotation direction. The sowing duckbill 15 and the sowing duckbill 2 16 pass through the sowing opening 10 from the upper side of the grounding plate 7 to the tension spring rod 22. A hinge block 8 is fixedly installed on the front and rear sides of the sowing opening 10, and a connecting short shaft 19 is hinged in the hinge block 8. The connecting rod 1 5 and the connecting rod 2 6 are both hinged on the connecting short shaft 19. If the hole seeder sows by vertical up and down movement, then the grounding plate 7 can be a flat plate shape. In this embodiment, the hole seeder sows by rolling forward. The bottom surface of the grounding plate 7 is an arc surface, specifically, the grounding plate 7 is an arc plate as a whole, which is formed by bending the steel plate. Side support plates 9 are fixedly installed on the side surfaces of the grounding plate 7 to play a reinforcing role and prevent the curvature of the bending from changing. The grounding plate 7 is also provided with a weight reduction hole 11 to reduce the counterweight and save costs.

[0040] In this embodiment, if Figure 5As shown, the radius of the ground plate 7 is equal to the distance from the axis D of the seeding wheel of the hole seeder to the soil 21, the distance from the axis D of the seeding wheel to the soil 21 is L, and the distance from the axis D of the seeding wheel to the farthest end of the seeding duckbill 16 is greater than L, so the seeding duckbill 15 and the seeding duckbill 16 will be inserted into the soil 21 during rolling, point D is the axis of the seeding wheel, and the dotted semicircular arc is an arc drawn with the axis D of the seeding wheel as the center. When the ground plate 7 is not in contact with the soil 21, outside this arc, that is, when the seeding wheel rolls, the bottom surface of the connecting rod 26 will be squeezed on the soil 21, and the arc center E of the ground plate 7 is eccentrically set to the axis D of the seeding wheel. The seeding wheel of the hole seeder drives the seeding cavity 1 to rotate and finally drives the ground plate 7 to rotate with it. The ground plate 7 also rotates around the axis D of the seeding wheel all the time. The arc center of the ground plate 7 is located on the rotation radius of L. When the ground plate 7 contacts the soil 21, the seeding duckbill 16 has been inserted into the soil 21, and has not yet reached the vertical state, at this time, the ground plate 7 is squeezed by the soil 21 and moves upward relative to the sowing cavity 1, and the opening and closing mouths 1 3 and 2 4 are driven to open through the connecting rod 1 5 and the connecting rod 2 6, and the seeds will fall, and the sowing wheel continues to move. The ground plate 7 is squeezed by the soil 21, and the sowing wheel axis D coincides with the arc center point E on the ground plate 7, so the ground plate 7 is always in a squeezed state, and the sowing duckbill 15 and the sowing duckbill 2 16 remain in an open state. When the sowing duckbill 15 and the sowing duckbill 2 16 rotate to leave the soil 21, the ground plate 7 is not in contact with the soil 21. At this time, the elastic component pulls the opening and closing mouth 1 3 and the opening and closing mouth 2 4, causing the sowing duckbill 15 and the sowing duckbill 2 16 to close. At this time, the closure will not clamp soil between the sowing duckbill 15 and the sowing duckbill 2 16. If the soil is clamped, the closure will not be tight, and the seeds may fall prematurely, reducing the survival rate of the seeds.

[0041] Working principle: The sowing chamber 1 is installed on the sowing wheel of the hole seeder through the cavity connecting ear 2, the center line of the side of the sowing chamber 1 faces the axis of the sowing wheel, the height is such that the sowing duckbill 15 and the sowing duckbill 2 16 can be inserted into the soil 21 to a depth of 4 cm to 5 cm, the hole seeder is started, the sowing wheel rolls forward, the sowing duckbill 15 and the sowing duckbill 2 16 are gradually inserted into the soil 21, and when the sowing duckbill 15 and the sowing duckbill 2 16 are almost vertical to the soil 21, the grounding plate 7 is in contact with the soil The grounding plate 7 begins to be squeezed, and the sowing duckbill 15 and the sowing duckbill 2 16 continue to move downward. The upper surface of the soil 21 in the grounding plate 7 is blocked and cannot move, so they gradually approach the sowing cavity 1. At this time, the connecting rod 15 and the connecting rod 26 drive the opening and closing mouth 2 4 and the opening and closing mouth 1 3 to rotate around the upper hinge rod 12, and the opening and closing mouth 1 3 and the opening and closing mouth 2 4 rotate to drive the sowing duckbill 15 and the sowing duckbill 2 16 to separate. The sowing duckbill 15 and the sowing duckbill 2 16 are moving toward the sowing cavity 1. The two sides of the direction are separated. When the upper edges of the sides of the opening and closing mouth 1 3 and the opening and closing mouth 2 4 contact the sides of the cavity connecting ear 2, they cannot continue to open, and the seeds fall from between the sowing duck bill 1 15 and the sowing duck bill 2 16. Since the sowing duck bill 1 15 and the sowing duck bill 2 16 are opened to both sides, whether the hole seeder moves forward and backward or the sowing duck bill 1 15 and the sowing duck bill 2 16 follow the rolling of the sowing wheel, they will not interfere with the position of the seeds after they fall. During the movement of the hole seeder, the bottom surface of the grounding plate 7 is always in contact with the soil 21, and the sowing duck bill 1 15 and the sowing duck bill 2 16 always remain open until the sowing duck bill 1 15 and the sowing duck bill 2 16 leave the soil 21. When the sowing duck bill 1 15 and the sowing duck bill 2 16 completely leave the soil 21, the grounding plate 7 is no longer in contact with the soil 21. At this time, the tension spring rod 22 pulls the opening and closing mouth 1 3 and the opening and closing mouth 2 4 to reset and close, thereby driving the sowing duck bill 1 15 and the sowing duck bill 2 16 to reset and close, and completing the sowing.

[0042] Embodiment 2: Different from Embodiment 1, in this embodiment, the opening and closing mouth 3 is fixedly mounted on the sowing chamber 1, and the distance from the axis of the upper hinged rod 12 to the upper end of the side surface of the opening and closing mouth 4 is greater than the distance at this position in Embodiment 1. Because both sides of Embodiment 1 can be opened, the required angle is not large. In this embodiment, only the opening and closing mouth 4 can rotate, so the opening and closing mouth 4 needs to rotate a larger angle to allow the seeds to fall. The lower the height of the side surface of the opening and closing mouth 4, the later it will contact the side surface of the sowing chamber 1, and the larger angle it can open. Other connection methods are the same as those in Example 1. In this embodiment, only the opening and closing mouth 2 4 can be rotated to control the opening and closing. When the grounding plate 7 contacts the soil 21, since the opening and closing mouth 3 is fixed, the hinge rod 14 under the hinge point on the opening and closing mouth 3 does not move, and the grounding plate 7 will push the connecting rod 1 5 and the connecting rod 2 6 upward, so that the connecting rod 1 5 drives the opening and closing mouth 2 4 to rotate sideways and open. In this embodiment, the sowing duckbill 2 16 is shorter than the sowing duckbill 15. The short duckbill is movable for opening and closing, and the sowing duckbill 15 is longer. When encountering hard soil, the sowing duckbill 15 can be broken, so that the sowing duckbill 2 16 can be rotated and opened more easily.

[0043] Embodiment 3: Figure 6 , Figure 7 As shown, what is different from the first embodiment is that in the present embodiment, the opening and closing mouth 1 3 is fixedly mounted on the sowing cavity 1, and the distance from the axis of the upper hinged rod 12 to the upper end of the side of the opening and closing mouth 2 4 is greater than the distance at this position in the first embodiment. Because both sides of the first embodiment can be opened, the required angle is not large. In the present embodiment, only the opening and closing mouth 2 4 can rotate, so the opening and closing mouth 2 4 needs to rotate a larger angle to allow the seeds to fall, and the lower the height of the side of the opening and closing mouth 2 4, the later it will contact the side of the sowing cavity 1, and the larger angle can be opened. The connecting rod group is also different. In the present embodiment, the connecting rod group includes a connecting rod 1 5, a connecting short shaft 19 and a limit strip 20. The connecting rod 1 5 is connected to the opening and closing mouth 2 4 The connecting rod 15 is hinged, and a connecting short shaft 19 is installed at the lower end of the connecting rod 15. The connecting short shaft 19 is hinged on the hinge block 8. The grounding plate 7 is connected to the connecting short shaft 19 through the side support plate 9. A limit strip 20 is fixedly installed on the opening and closing mouth 3. The circumferential surface of one end of the connecting short shaft 19 close to the opening and closing mouth 3 is in contact with the side of the limit strip 20 to prevent the connecting short shaft 19, the grounding plate 7, and the hinge block 8 from swinging toward the direction of the opening and closing mouth 4. The grounding plate 7 contacts with the soil 21 and moves upward relatively, pushing the connecting rod 15, thereby driving the opening and closing mouth 4 to rotate and open to the side. The connecting short shaft 19 always slides up and down along the limit strip 20, and the grounding plate 7 is also kept from moving sideways during this process.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seeding device for a hole seeder, characterized in that: The invention comprises a sowing chamber (1), wherein two opening and closing nozzles are arranged at the lower side of the sowing chamber (1), at least one of the opening and closing nozzles is hingedly connected to the sowing chamber (1) and rotates toward the side of the sowing chamber (1) to form an opening, a connecting rod group is arranged on the opening and closing nozzle, a grounding plate (7) is arranged at the lower side of the connecting rod group, the grounding plate (7) contacts the soil and pushes the connecting rod group upward, and the opening and closing nozzle hingedly connected to the sowing chamber (1) is driven by the connecting rod group to rotate toward the side of the sowing chamber (1) to open, and the rotation direction is perpendicular to the moving direction of the seed drill, and an elastic component for restoring closure is arranged between the two opening and closing nozzles.

2. A seeding device for a hole seeder according to claim 1, characterized in that: The lower parts of the two opening and closing mouths are respectively provided with a sowing duckbill one (15) and a sowing duckbill two (16), and the lower ends of the sowing duckbill one (15) and the sowing duckbill two (16) are located on the lower side of the grounding plate (7).

3. A seeding device for a hole seeder according to claim 2, characterized in that: The sowing duck bill one (15) and the sowing duck bill two (16) are in the shape of triangular pyramids, the interior of the opening and closing bills is a square cavity (17), and the interior of the sowing duck bill one (15) and the sowing duck bill two (16) is a triangular cavity (18).

4. A seeding device for a hole seeder according to claim 2, characterized in that: The bottom end of the sowing duckbill one (15) is longer than the bottom end of the sowing duckbill two (16), and the inclined surfaces of the sowing duckbill one (15) and the sowing duckbill two (16) face the direction in which the seed drill moves.

5. A seeding device for a hole seeder according to claim 2, characterized in that: The bottom surface of the grounding plate (7) is arc-shaped. When the grounding plate (7) is not squeezed, the distance from the center of the sowing wheel to the grounding plate (7) is greater than the distance from the center of the sowing wheel to the soil. Before the sowing duckbill 1 (15) and the sowing duckbill 2 (16) are completely inserted into the soil, one end of the bottom surface of the grounding plate (7) contacts the soil. After the sowing duckbill 1 (15) and the sowing duckbill 2 (16) are completely separated from the soil, the grounding plate (7) leaves the soil.

6. A seeding device for a hole seeder according to claim 1, characterized in that: When the opening and closing mouth is closed, the side surface of the opening and closing mouth fits against the side surface of the sowing cavity (1), and the hinge axis of the opening and closing mouth and the sowing cavity (1) is higher than the highest point of the side surface of the opening and closing mouth.

7. A seeding device for a hole seeder according to claim 1, characterized in that: When the two opening and closing mouths are closed, a V-shaped gap is formed, and the bottom end of the gap is higher than the bottom end of the sowing cavity (1).

8. A seeding device for a hole seeder according to claim 1, characterized in that: The opening and closing mouth comprises an opening and closing mouth 1 (3) and an opening and closing mouth 2 (4), both of which are hinged to the sowing chamber (1), and the connecting rod group comprises a connecting rod 1 (5) and a connecting rod 2 (6), the connecting rod 1 (5) is hinged to the opening and closing mouth 2 (4), the connecting rod 2 (6) is hinged to the opening and closing mouth 1 (3), the lower ends of the connecting rod 1 (5) and the connecting rod 2 (6) are hinged to a grounding plate (7), and the grounding plate (7) pushes the connecting rod 1 (5) and the connecting rod 2 (6) upwards to drive the opening and closing mouth 1 (3) and the opening and closing mouth 2 (4) to rotate in opposite directions to open.

9. A seeding device for a hole seeder according to claim 1, characterized in that: The opening and closing mouth comprises an opening and closing mouth 1 (3) and an opening and closing mouth 2 (4), the opening and closing mouth 2 (4) is hinged to the sowing chamber (1), the opening and closing mouth 1 (3) is fixedly connected to the sowing chamber (1), the connecting rod group comprises a connecting rod 1 (5) and a connecting rod 2 (6), the connecting rod 1 (5) is hinged to the opening and closing mouth 2 (4), the connecting rod 2 (6) is hinged to the opening and closing mouth 1 (3), the lower ends of the connecting rod 1 (5) and the connecting rod 2 (6) are hinged to a grounding plate (7), the grounding plate (7) pushes the connecting rod 1 (5) and the connecting rod 2 (6) upwards, and the connecting rod 1 (5) drives the opening and closing mouth 2 (4) to rotate away from the opening of the closing mouth 1 (3).

10. A seeding device for a hole seeder according to claim 1, characterized in that: The opening and closing mouth comprises an opening and closing mouth 1 (3) and an opening and closing mouth 2 (4), wherein the opening and closing mouth 1 (3) is fixedly mounted on the sowing chamber (1), and the opening and closing mouth 2 (4) is hingedly connected to the sowing chamber (1), and the connecting rod group comprises a connecting rod 1 (5), a connecting short shaft (19) and a limiting strip (20), wherein the connecting rod 1 (5) is hingedly connected to the opening and closing mouth 2 (4), a connecting short shaft (19) is fixedly mounted on the lower end of the connecting rod 1 (5), and the limiting strip (20) is fixedly mounted on the opening and closing mouth 1 (3), and a grounding plate (7) is hingedly connected to the connecting short shaft (19), and a circumferential surface of the connecting short shaft (19) is in contact with a side surface of the limiting strip (20), and the grounding plate (7) moves vertically along the side surface of the limiting strip (20).

Images