Seedling raising tray seeding device for agricultural seedling raising

Abstract

The invention relates to the technical field of seedling tray sowing, in particular to an agricultural seedling tray sowing device which comprises an intermittent conveying structure, an equipment frame and a seed box, the conveying structure is connected with the equipment frame, the seed box is located above the conveying structure and fixed to the equipment frame, and a telescopic frame structure is arranged below the seed box. An electric telescopic rod is fixed to the bottom of the seed box, the lower end of the electric telescopic rod is connected with the lower telescopic end of the telescopic frame structure, damping structures for applying resistance to the upper telescopic end of the telescopic frame structure are arranged on two sides of the telescopic frame structure, and the upper ends of the damping structures are fixed to the seed box. The lower telescopic end of the telescopic frame structure firstly drives the soil dividing rod and the elastic soil dividing piece to move upwards, the discharging pipe pushes the elastic soil dividing piece to deform under blocking of the damping structure, the lower end of the discharging pipe stretches out of the elastic soil dividing piece, and seeds in the discharging pipe fall into pressed-in pressing holes under the state that the discharging pipe does not move out of the pressed-in pressing holes. The seeds cannot fall on the outer side of the pressing hole.

Description

Technical Field

[0001] The present invention relates to the technical field of seeding in seedling trays, and more particularly to a seeding device for agricultural seedling raising using a seedling tray. Background Art

[0002] A seedling plug tray is a plastic product for cultivating seedlings, and a plurality of evenly distributed seedling holes are arranged in rows on the surface of the seedling plug tray. Whether it is flowers or vegetables, plug tray seeding is a fundamental change in modern horticulture, providing a guarantee for fast and large-scale production.

[0003] Chinese Patent CN119234516A discloses a seeding device for agricultural seedling raising using a seedling tray, which relates to the technical field of seeding devices for seedling trays. It includes two support plates and a seedling tray body. Two mud storage boxes and a seed storage box are fixedly installed on the two support plates, and the position of the seed storage box is between the two mud storage boxes. Through the conveying component, the seedling tray body is conveyed on the conveyor belt, and then through the quantitative discharge component one, the soil in the mud storage cavity can be quantitatively discharged onto the seedling tray body in two times. When the first soil discharge is completed, through the quantitative discharge component two, the seedling seeds can be discharged into the soil, and then the seeds are buried in the middle of the soil through the second soil discharge. Then, through the pressing component, it is convenient to slightly press the seedling tray body when the first soil discharge and the discharge of the seedling seeds are completed, so that the contact effect between the soil and the seedling seeds in the seedling tray body is better, improving the absorption and growth ability of the seeds. The above related technologies have the following defects: during seeding, the seedling tray is placed on an intermittently conveyed conveying structure. First, soil is added to the seedling holes of the seedling tray, and then a pressing groove is pressed in the seedling hole through a pressing structure, and then the seeds are placed in the pressed groove. However, the existing general separation of the hole pressing step and the placing of seeds is set, but the seedling tray is prone to displacement during the conveying of the seedling tray, resulting in the subsequent falling seeds not being able to accurately fall into the pressed groove and falling outside the groove. For this reason, a seeding device for agricultural seedling raising using a seedling tray is proposed. Summary of the Invention

[0004] In order to ensure that the seeds can fall into the pressed grooves and facilitate subsequent soil covering treatment, the present invention provides a seeding device for agricultural seedling raising using a seedling tray.

[0005] A seeding device for agricultural seedling raising using a seedling tray provided by the present invention adopts the following technical solutions: it includes an intermittently conveyed conveying structure, an equipment frame, and a seed box. The conveying structure is connected to the equipment frame, and the seed box is located above the conveying structure and fixed to the equipment frame. A telescopic frame structure is arranged below the seed box, an electric telescopic rod is fixed to the bottom surface of the seed box, and the lower end of the electric telescopic rod is connected to the lower telescopic end of the telescopic frame structure. Damping structures for applying resistance to the upper telescopic end of the telescopic frame structure are arranged on both sides of the telescopic frame structure, the upper ends of the damping structures are fixed to the seed box, and the upper telescopic end of the telescopic frame structure is connected to the damping structures.

[0006] A material distribution pipe is provided below the seed box. At the upper end of the material distribution pipe, a material distribution structure for distributing seeds is connected and installed. The upper end of the material distribution structure is connected and installed with the bottom surface of the seed box. The lower end of the material distribution pipe is slidably inserted with a blanking pipe. The blanking pipe is fixed to the telescopic end of the telescopic frame structure. The lower end of the blanking pipe is slidably sleeved with a soil dividing rod. The back surface of the soil dividing rod is fixed to the lower telescopic end of the telescopic frame structure. A plurality of elastic soil dividing pieces are installed on the bottom surface of the soil dividing rod.

[0007] Optionally, the telescopic frame structure includes an upper strip rod and a lower strip rod. The upper strip rod is located above the lower strip rod. The upper strip rod and the lower strip rod are elastically connected by an elastic telescopic rod.

[0008] A linkage rod is provided at the rear side of the upper strip rod. The linkage rod is fixed to the lower end of the electric telescopic rod. Both ends of the linkage rod are fixed to both ends of the lower strip rod.

[0009] Optionally, the damping structure includes a vertical rod and an elastic clamping plate. The elastic clamping plate is fixed to the upper strip rod. The upper end of the vertical rod is fixed to the seed box.

[0010] A plurality of triangular grooves are formed on the surface of the vertical rod close to the upper strip rod. The inner walls on the upper and lower sides of the triangular grooves are symmetric inclined surfaces. The elastic clamping plate is located inside the adjacent triangular grooves.

[0011] Optionally, the lower ends of the plurality of elastic soil dividing pieces are distributed in a polyhedral cone shape. The lower end of the blanking pipe is in contact with the elastic soil dividing pieces.

[0012] Optionally, the material distribution structure includes a material transfer pipe and a fixed end plate. The upper end of the material transfer pipe is fixedly inserted into the lower end of the seed box. A top arc plate is fixedly sleeved on the lower end surface of the material transfer pipe. The back surface of the top arc plate is fixed to the fixed end plate. An adjusting arc plate is rotatably sleeved on the outer surface of the fixed end plate. The adjusting arc plate is located below the top arc plate.

[0013] The adjusting arc plate and the top arc plate are concentrically arranged. The inner and outer diameters of the adjusting arc plate and the top arc plate are the same. The upper end of the material distribution pipe is in sliding contact with the outer ring surface of the adjusting arc plate. The back surface of the material distribution pipe is fixed to the fixed end plate.

[0014] A material distribution ring column is rotatably inserted between the inner ring surfaces of the adjusting arc plate and the top arc plate. A plurality of seed storage holes are formed on the outer ring surface of the material distribution ring column. Seed ejecting rods are slidably inserted inside the seed storage holes.

[0015] The seed ejecting rods are elastically connected to the material distribution ring column. An axis hole is formed on the outer ring surface of the adjusting arc plate below the material distribution pipe. The axis of the axis hole is perpendicular to and intersects with the axis of the material distribution ring column. The included angle between the upper right end of the adjusting arc plate and the right end of the top arc plate is equal to the included angle between the axis of the axis hole and the axis of the upper end of the material distribution pipe.

[0016] Optionally, a slotted cylinder is coaxially fixed to one end of the seed ejecting rod close to the axis of the material distribution ring column. Symmetrically distributed groove-like structures are provided on the circumferential surface of the slotted cylinder.

[0017] An inner disk is provided at the axis of the material distribution ring column. The circumferential surface on the upper left side of the inner disk is notch-shaped. The inner disk is coaxially arranged with the fixed end disk. The inner disk is located in the groove-shaped structure of the grooved cylinder. An elastic telescopic contact rod is provided at the axis of the grooved cylinder. One end of the elastic telescopic contact rod is in sliding contact with the inner disk, and the other end of the elastic telescopic contact rod is fixed to the seed ejector rod.

[0018] Optionally, an end rod is fixed to the front surface of the grooved cylinder. The material distribution ring column is provided with an opening-shaped structure adapted to the end rod at the seed storage hole. A baffle is arranged on the inner ring side of the material distribution ring column. The extension surface on the upper surface of the baffle coincides with the axis of the material distribution ring column and the upper end axis of the material distribution pipe. The distance between the outer ring surface of the baffle and the material distribution ring column is greater than the diameter of the end rod.

[0019] The contact end of the material distribution pipe with the adjusting arc plate inclines towards the adjusting arc plate.

[0020] Optionally, a linkage ring is coaxially fixed to the front surface of the material distribution ring column. A worm gear is rotatably sleeved on the outer ring surface of the linkage ring. A worm is meshed with the upper side of the worm gear.

[0021] Tooth grooves are formed on the outer ring surface of the linkage ring. A plurality of elastic dial plates are fixed to the inner ring surface of the worm gear. The other ends of the elastic dial plates are located inside adjacent tooth grooves.

[0022] A power long shaft is rotatably installed on the outside of the seed box. The worm is fixedly sleeved on the outer surface of the power long shaft.

[0023] Optionally, a friction wheel is coaxially fixed to one end of the adjusting arc plate located at the rear side of the fixed end disk. A friction plate is arranged on the right side of the friction wheel. The upper strip rod is slidably sleeved on the outer surface of the friction plate. The lower end surface of the friction plate is fixed to the lower strip rod.

[0024] In summary, the present invention includes the following beneficial technical effects: 1. By providing components such as a material distribution pipe, elastic soil dividing pieces, a telescopic frame structure, and a blanking pipe, when pressing holes in a seedling tray filled with soil, when controlling the telescopic frame structure to move downward, it drives the blanking pipe, soil dividing rod, and elastic soil dividing pieces downward. After the plurality of elastic soil dividing pieces and soil dividing rods distributed in a conical shape are inserted into the soil, a sunken space is formed in the soil. Then, when controlling the telescopic frame structure to move upward, the telescopic end on the telescopic frame structure is delayed in moving due to resistance, and the lower telescopic end of the telescopic frame structure first drives the soil dividing rod and elastic soil dividing pieces to move upward. The blanking pipe deforms the elastic soil dividing pieces under the blockage of the damping structure, and the lower end of the blanking pipe extends out of the elastic soil dividing pieces. The seeds inside the blanking pipe fall into the pressed holes without moving out of the pressed hole state, and the seeds will not fall outside the pressed holes.

[0025] 2. The present invention provides a material distribution ring column, a material distribution push rod, a slotted cylinder, an end rod and a baffle, etc. The seeds in the seed box fall into the material transfer tube, the worm and the worm gear mesh with each other and drive the tooth groove through the elastic plate to drive the linkage ring and the material distribution ring column to rotate clockwise, and the material distribution ring column drives the seed storage hole to rotate to communicate with the material transfer tube, and the seeds in the material transfer tube fall into the connected seed storage hole, and then the material distribution ring column rotates to drive the elastic telescopic contact rod to slide on the surface of the inner disk, and the non-notch part of the inner disk has a The telescopic contact rod pushes the seed push rod away from the axis of the dividing ring column. When there is no seed in the seed storage hole, the seed push rod is flush with the outer ring surface of the dividing ring column under the push of the elastic telescopic contact rod, and the baffle does not block the end rod. When there is seed in the seed storage hole, the seed push rod cannot move to be flush with the outer ring surface of the dividing ring column. When the seed storage hole rotates to the position connected with the dividing pipe, the baffle blocks the end rod to ensure that only the seed storage hole with seeds will stay in the position connected with the dividing pipe.

[0026] 3. The present invention arranges components such as friction plates and friction wheels. When the soil dividing rod and the elastic soil dividing piece are separated upward from the soil, the friction plate is driven to move upward. The friction plate drives the adjusting arc plate to rotate counterclockwise through friction contact with the friction wheel, so that the axis hole is connected with the material dividing pipe and the corresponding seed storage hole. The seed push rod is elastically connected with the material dividing ring column to descend the seeds through the axis hole and push them into the material dividing pipe. Then the seeds fall into the pressed holes through the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 2 is a schematic diagram of the structure of the connection between the material transfer pipe and the seed box in an embodiment of the present invention; Figure 3 is a schematic structural diagram of the connection between the electric telescopic rod and the linkage rod in an embodiment of the present invention; Figure 4 2 is a schematic diagram of the structure of the connection between the triangular groove and the elastic clamping plate in an embodiment of the present invention; Figure 5 It is a structural schematic diagram of the connection between the feed pipe and the soil dividing rod in an embodiment of the present invention; Figure 6 is a schematic diagram of the structure of the connection between the elastic pull plate and the tooth socket in an embodiment of the present invention; Figure 7 It is a schematic front view of some structures in an embodiment of the present invention; Figure 8 2 is a schematic diagram of the structure of the connection between the seed top rod and the seed storage hole in an embodiment of the present invention; Figure 9 is a schematic structural diagram of the connection between the friction plate and the friction wheel in an embodiment of the present invention; Figure 10It is a schematic structural diagram of the connection between the seed ejector rod and the elastic telescopic contact rod in the embodiment of the present invention.

[0028] Reference numerals: 1, conveying structure; 2, equipment frame; 3, seed box; 4, electric telescopic rod; 5, telescopic frame structure; 51, upper strip rod; 52, lower strip rod; 53, elastic telescopic rod; 54, linkage rod; 6, damping structure; 61, vertical rod; 611, triangular groove; 62, elastic clamping plate; 7, material distribution pipe; 8, material distribution structure; 81, material conveying pipe; 82, fixed end plate; 83, top arc plate; 84, adjusting arc plate; 841, friction wheel; 842, friction plate; 85, material distribution ring column; 851, linkage ring; 852, worm gear; 853, worm; 854, tooth groove; 855, elastic deflector; 856, power long shaft; 86, seed storage hole; 87, seed ejector rod; 88, axis hole; 89, grooved cylinder; 810, inner disc; 811, elastic telescopic contact rod; 812, end rod; 813, baffle; 9, blanking pipe; 10, soil dividing rod; 11, elastic soil dividing piece. Detailed implementation manners

[0029] The following will Figures 1-10 further describe the present invention in detail with reference to the appended

[0030] An embodiment of the present invention discloses a seedling tray sowing device for agricultural seedling raising. As Figures 1-10 shown, it includes a conveying structure 1 for intermittent conveying, an equipment frame 2, and a seed box 3. Soil covering structures are arranged on both sides of the seed box 3 above the conveying structure 1 for intermittent conveying, respectively covering soil into the seedling holes of the empty seedling trays and the seedling holes after putting seeds. The conveying structure 1 is connected to the equipment frame 2, and the seed box 3 is located above the conveying structure 1 and fixed to the equipment frame 2.

[0031] A telescopic frame structure 5 is arranged below the seed box 3. The telescopic frame structure 5 includes an upper strip rod 51 and a lower strip rod 52. The upper strip rod 51 is located above the lower strip rod 52. The upper strip rod 51 and the lower strip rod 52 are elastically connected by an elastic telescopic rod 53. The elastic telescopic rod 53 has a tendency to push the upper strip rod 51 and the lower strip rod 52 to move backward and away from each other.

[0032] An electric telescopic rod 4 is fixed to the bottom surface of the seed box 3. The lower end of the electric telescopic rod 4 is connected to the lower telescopic end of the telescopic frame structure 5. A linkage rod 54 is arranged at the rear side of the upper strip rod 51. The linkage rod 54 is fixed to the lower end of the electric telescopic rod 4. Both ends of the linkage rod 54 are fixed to both ends of the lower strip rod 52. When the electric telescopic rod 4 expands and contracts, it drives the lower strip rod 52 to move synchronously through the linkage rod 54.

[0033] On both sides of the telescopic frame structure 5, there is a damping structure 6 that applies resistance to the telescopic end of the telescopic frame structure 5. The upper end of the damping structure 6 is fixed to the seed box 3, and the telescopic end of the telescopic frame structure 5 is connected to the damping structure 6. When the telescopic frame structure 5 moves upward, the telescopic frame structure 5 first contracts and then moves upward relative to the damping structure 6. The elasticity of the elastic telescopic rod 53 is less than the resistance of the damping structure 6 to the telescopic frame structure 5.

[0034] The damping structure 6 includes a vertical rod 61 and an elastic clamping plate 62. The elastic clamping plate 62 is fixed to the upper strip rod 51. The upper end of the vertical rod 61 is fixed to the seed box 3. On one side of the vertical rod 61 close to the upper strip rod 51, there are a plurality of triangular grooves 611. The inner walls on the upper and lower sides of the triangular grooves 611 are symmetric inclined surfaces. The elastic clamping plate 62 is located inside the adjacent triangular grooves 611, and the elastic clamping plate 62 meshes with the triangular grooves 611 to apply resistance to the movement of the upper strip rod 51. When the lower strip rod 52 moves upward and compresses the elastic telescopic rod 53 to the maximum extent and then continues to move upward, the upper strip rod 51 can push the elastic clamping plate 62 to elastically bend and continuously disengage from the inside of the triangular grooves 611.

[0035] Below the seed box 3, there is a material distribution pipe 7. At the upper end of the material distribution pipe 7, there is a material distribution structure 8 for distributing seeds, and the upper end of the material distribution structure 8 is connected and installed to the bottom surface of the seed box 3.

[0036] The material distribution structure 8 includes a material transmission pipe 81 and a fixed end plate 82. The upper end of the material transmission pipe 81 is fixedly inserted into the lower end of the seed box 3. A plurality of material transmission pipes 81 are filled and distributed at the lower end of the seed box 3 so that there is no residue at the bottom of the seed box 3. The upper end of the material transmission pipe 81 is provided in a conical shape, and the seeds in the seed box 3 enter the inside through the upper end of the material transmission pipe 81.

[0037] The lower end surface of the material transmission pipe 81 is fixedly sleeved with a top arc plate 83. The back surface of the top arc plate 83 is fixed to the fixed end plate 82. The outer surface of the fixed end plate 82 is rotatably sleeved with an adjusting arc plate 84, and the adjusting arc plate 84 is located below the top arc plate 83.

[0038] The adjusting arc plate 84 is concentric with the top arc plate 83, and the inner and outer diameters of the adjusting arc plate 84 are the same as those of the top arc plate 83. The upper end of the material distribution pipe 7 is in sliding contact with the outer ring surface of the adjusting arc plate 84. The back surface of the material distribution pipe 7 is fixed to the fixed end plate 82. There is a gap between the right side of the adjusting arc plate 84 and the top arc plate 83.

[0039] At one end of the adjusting arc plate 84 located at the rear side of the fixed end plate 82, there is a friction wheel 841 coaxially fixed. On the right side of the friction wheel 841, there is a friction plate 842. The upper strip rod 51 is slidably sleeved on the outer surface of the friction plate 842. The lower end surface of the friction plate 842 is fixed to the lower strip rod 52. When the lower strip rod 52 moves downward, it drives the friction plate 842 to mesh with the friction wheel 841 and drives the adjusting arc plate 84 to rotate clockwise. When the lower strip rod 52 moves upward, it drives the friction plate 842 to mesh with the friction wheel 841 and drives the adjusting arc plate 84 to rotate counterclockwise.

[0040] A material distributing ring column 85 is rotationally inserted between the inner ring surface of the adjusting arc plate 84 and the top arc plate 83. A plurality of seed storage holes 86 are formed on the outer ring surface of the material distributing ring column 85, and a seed ejector rod 87 is slidably inserted inside the seed storage hole 86.

[0041] The seed ejector rod 87 is elastically connected to the material distributing ring column 85. The elastic connection between the seed ejector rod 87 and the material distributing ring column 85 is connected by an elastic member such as a spring. The elastic connection between the seed ejector rod 87 and the material distributing ring column 85 has a tendency to drive the seed ejector rod 87 away from the axis side of the material distributing ring column 85.

[0042] One end of the seed ejector rod 87 close to the axis of the material distributing ring column 85 is coaxially fixed with a slotted cylinder 89, and groove-shaped structures are symmetrically distributed on the circumferential surface of the slotted cylinder 89.

[0043] An inner disk 810 is arranged at the axis of the material distributing ring column 85. The circumferential surface at the upper left side of the inner disk 810 is in a notch shape. The inner disk 810 is coaxially arranged with the fixed end disk 82. The inner disk 810 is located in the groove-shaped structure of the slotted cylinder 89. When the material distributing ring column 85 drives the slotted cylinder 89 to rotate, the inner disk 810 rotates in the groove-shaped structure of the slotted cylinder 89. An elastic telescopic contact rod 811 is arranged at the axis of the slotted cylinder 89. The elastic telescopic contact rod 811 has a tendency to expand. The elasticity of the elastic telescopic contact rod 811 is greater than the elasticity between the seed ejector rod 87 and the material distributing ring column 85. One end of the elastic telescopic contact rod 811 is in sliding contact with the inner disk 810, and the other end of the elastic telescopic contact rod 811 is fixed to the seed ejector rod 87. When the seed storage hole 86 rotates to the upper side of the axis of the material distributing ring column 85 and is in a vertical state, the elastic telescopic contact rod 811 is located at the notch-shaped position of the inner disk 810, so that the seeds in the material conveying pipe 81 fall into the corresponding upper side of the seed ejector rod 87 in the connected seed storage hole 86.

[0044] An axis hole 88 is formed on the outer ring surface of the adjusting arc plate 84 below the material distributing pipe 7. The axis of the axis hole 88 is vertically intersected with the axis of the material distributing ring column 85. The contact end of the material distributing pipe 7 and the adjusting arc plate 84 is inclined towards the adjusting arc plate 84. The included angle between the right upper end of the adjusting arc plate 84 and the right end of the top arc plate 83 is equal to the included angle between the axis of the axis hole 88 and the upper end axis of the material distributing pipe 7. When the right end of the adjusting arc plate 84 contacts the top arc plate 83, the axis hole 88 is communicated with the inclined end of the material distributing pipe 7 and the corresponding seed storage hole 86, so that the seeds in the seed storage hole 86 fall into the material distributing pipe 7 through the axis hole 88.

[0045] A terminal rod 812 is fixedly attached to the front of the grooved cylinder 89. The material distributing ring column 85 is provided with an opening-shaped structure adapted to the terminal rod 812 at the seed storage hole 86. A baffle 813 is arranged on the inner ring side of the material distributing ring column 85. The extension surface of the upper surface of the baffle 813 coincides with the axis of the material distributing ring column 85 and the upper axis of the material distributing pipe 7. The distance between the outer ring surface of the baffle 813 and the material distributing ring column 85 is greater than the diameter of the terminal rod 812. After the elastic telescopic contact rod 811 rotates away from the notch position of the inner disc 810, the seed ejector rod 87 is pushed away from the axis of the material distributing ring column 85 by the elastic telescopic contact rod 811. When there is no seed in the seed storage hole 86, the seed ejector rod 87 moves to be flush with the outer ring surface of the material distributing ring column 85, and the terminal rod 812 can pass through between the baffle 813 and the inner ring of the material distributing ring column 85, so that the seed storage hole 86 without seeds will not stay at the position communicating with the upper end of the material distributing pipe 7. When there is a seed in the seed storage hole 86, the seed ejector rod 87 cannot move to the position flush with the outer ring surface of the material distributing ring column 85, so that when the terminal rod 812 rotates with the material distributing ring column 85, it contacts the baffle 813. At the same time, the elastic telescopic contact rod 811 corresponding to the seed storage hole 86 filled with seeds is compressed under the push of the inner disc 810. When the adjusting arc plate 84 drives the axis hole 88 to communicate with the upper end of the material distributing pipe 7, the elastic telescopic rod 53 pushes the seed ejector rod 87 to push the seeds in the seed storage hole 86 into the material distributing pipe 7 through the axis hole 88.

[0046] A linkage ring 851 is coaxially and fixedly attached to the front of the material distributing ring column 85. A worm gear 852 is rotatably sleeved on the outer ring surface of the linkage ring 851. A worm 853 is engaged with the upper side of the worm gear 852. An alveolar groove 854 is formed on the outer ring surface of the linkage ring 851. A plurality of elastic dial plates 855 are fixedly attached to the inner ring surface of the worm gear 852, and the other ends of the elastic dial plates 855 are located inside the adjacent alveolar grooves 854.

[0047] A power long shaft 856 is rotatably installed on the outside of the seed box 3. The seed box 3 is equipped with a motor that outputs power to the power long shaft 856. The worm 853 is fixedly sleeved on the outer surface of the power long shaft 856. When the power long shaft 856 rotates, it drives the worm 853 to rotate. The worm gear 852 is engaged with the worm 853, driving the elastic dial plates 855 to rotate. The elastic dial plates 855 drive the linkage ring 851 and the material distributing ring column 85 to rotate by engaging with the alveolar grooves 854. When the terminal rod 812 contacts the upper surface of the baffle 813, when the worm gear 852 continues to rotate, the elastic dial plates 855 are misaligned with the alveolar grooves 854 through elastic bending.

[0048] The lower end of the material distributing pipe 7 is slidably inserted with a blanking pipe 9. The blanking pipe 9 is fixed to the telescopic end of the telescopic frame structure 5. The lower end of the blanking pipe 9 is slidably sleeved with a soil dividing rod 10. The back surface of the soil dividing rod 10 is fixed to the lower telescopic end of the telescopic frame structure 5. A plurality of elastic soil dividing plates 11 are installed on the bottom surface of the soil dividing rod 10. The lower ends of the plurality of elastic soil dividing plates 11 are distributed in a polyhedral cone shape. When the soil dividing rod 10 and the elastic soil dividing plates 11 move downward, the soil dividing rod 10 and the elastic soil dividing plates 11 are inserted downward into the soil to press out grooves. The lower end of the blanking pipe 9 is in contact with the elastic soil dividing plates 11. When the lower strip rod 52 moves upward to compress the elastic telescopic rod 53, the elastic soil dividing plates 11 move upward following the soil dividing rod 10. The blanking pipe 9 pushes the upward moving elastic soil dividing plates 11 to elastically deform, so that the blanking pipe 9 extends out from below the elastic soil dividing plates 11, and the seeds in the blanking pipe 9 can fall into the pressed grooves. The total elasticity of the elastic soil dividing plates 11 and the elastic telescopic rod 53 is less than the elasticity of the elastic clamping plate 62, ensuring that the blanking pipe 9 can push the elastic clamping plate 62 to elastically bend only after pushing out the elastic soil dividing plates 11.

[0049] The working principle is as follows: Place the seedling tray above the intermittent conveying structure 1. The conveying structure 1 intermittently drives the seedling tray to move. After covering the soil on the seedling tray, the conveying structure 1 drives the seedling tray to move to the lower side of the soil dividing rod 10 and the elastic soil dividing plates 11. The electric telescopic rod 4 controls the telescopic frame structure 5 to move downward. When the telescopic frame structure 5 moves downward, it drives the blanking pipe 9, the soil dividing rod 10 and the elastic soil dividing plates 11 downward. After the plurality of elastic soil dividing plates 11 and the soil dividing rod 10 distributed in a cone shape are inserted into the soil, a sunken space is formed in the soil. Then, when the electric telescopic rod 4 controls the telescopic frame structure 5 to move upward, the upper telescopic end of the telescopic frame structure 5 is delayed in moving by the resistance of the damping structure 6. The lower telescopic end of the telescopic frame structure 5 first drives the soil dividing rod 10 and the elastic soil dividing plates 11 to move upward. The blanking pipe 9 pushes the elastic soil dividing plates 11 to deform under the block of the damping structure 6, and the lower end of the blanking pipe 9 extends out of the elastic soil dividing plates 11. The blanking pipe 9 makes the seeds inside fall into the pressed holes without moving out of the pressed holes.

[0050] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A seeding device for a seedling tray used in agricultural seedling raising, comprising a conveying structure (1) for intermittent conveying, an equipment frame (2), and a seed box (3). The conveying structure (1) is connected to the equipment frame (2), and the seed box (3) is located above the conveying structure (1) and fixed to the equipment frame (2), characterized in that: A telescopic frame structure (5) is provided below the seed box (3). An electric telescopic rod (4) is fixed to the bottom surface of the seed box (3). The lower end of the electric telescopic rod (4) is connected to the lower telescopic end of the telescopic frame structure (5). Damping structures (6) for applying resistance to the upper telescopic end of the telescopic frame structure (5) are provided on both sides of the telescopic frame structure (5). The upper ends of the damping structures (6) are fixed to the seed box (3). The upper telescopic end of the telescopic frame structure (5) is connected to the damping structures (6). A material distribution pipe (7) is provided below the seed box (3). A material distribution structure (8) for distributing seeds is connected and installed at the upper end of the material distribution pipe (7). The upper end of the material distribution structure (8) is connected and installed in communication with the bottom surface of the seed box (3). A blanking pipe (9) is slidably inserted into the lower end of the material distribution pipe (7). The blanking pipe (9) is fixed to the upper telescopic end of the telescopic frame structure (5). A soil dividing rod (10) is slidably sleeved at the lower end of the blanking pipe (9). The back surface of the soil dividing rod (10) is fixed to the lower telescopic end of the telescopic frame structure (5). A plurality of elastic soil dividing plates (11) are installed on the bottom surface of the soil dividing rod (10).

2. The seeding device for a seedling tray used in agricultural seedling raising according to claim 1, wherein: The telescopic frame structure (5) includes an upper strip rod (51) and a lower strip rod (52). The upper strip rod (51) is located above the lower strip rod (52). The upper strip rod (51) and the lower strip rod (52) are elastically connected by an elastic telescopic rod (53). A linkage rod (54) is provided at the rear side of the upper strip rod (51). The linkage rod (54) is fixed to the lower end of the electric telescopic rod (4). Both ends of the linkage rod (54) are fixed to both ends of the lower strip rod (52).

3. The seeding device for a seedling tray used in agricultural seedling raising according to claim 2, characterized in that: The damping structure (6) includes a vertical rod (61) and an elastic clamping plate (62). The elastic clamping plate (62) is fixed to the upper strip rod (51). The upper end of the vertical rod (61) is fixed to the seed box (3). A plurality of triangular grooves (611) are formed on the surface of the vertical rod (61) close to the upper strip rod (51). The inner walls on the upper and lower sides of the triangular grooves (611) are symmetric inclined surfaces. The elastic clamping plate (62) is located inside adjacent triangular grooves (611).

4. The seeding device for a seedling tray used in agricultural seedling raising according to claim 1, characterized in that: The lower ends of the plurality of elastic soil dividing plates (11) are distributed in a polyhedral cone shape. The lower end of the blanking pipe (9) is in contact with the elastic soil dividing plates (11).

5. The seeding device for a seedling tray used in agricultural seedling raising according to claim 2, wherein: The material distribution structure (8) includes a material transfer pipe (81) and a fixed end plate (82). The upper end of the material transfer pipe (81) is fixedly inserted into the lower end of the seed box (3). A top arc plate (83) is fixedly sleeved on the lower end surface of the material transfer pipe (81). The back surface of the top arc plate (83) is fixed to the fixed end plate (82). An adjusting arc plate (84) is rotatably sleeved on the outer surface of the fixed end plate (82). The adjusting arc plate (84) is located below the top arc plate (83). The adjusting arc plate (84) and the top arc plate (83) are concentrically arranged. The inner and outer diameters of the adjusting arc plate (84) and the top arc plate (83) are the same. The upper end of the material distribution pipe (7) is in sliding contact with the outer ring surface of the adjusting arc plate (84). The back surface of the material distribution pipe (7) is fixed to the fixed end plate (82). A material distribution ring column (85) is rotatably inserted between the inner ring surfaces of the adjusting arc plate (84) and the top arc plate (83). A plurality of seed storage holes (86) are formed on the outer ring surface of the material distribution ring column (85). Seed ejecting rods (87) are slidably inserted inside the seed storage holes (86). The seed ejector rod (87) is elastically connected to the material distribution ring column (85). An axial hole (88) is provided on the outer circumferential surface of the adjusting arc plate (84) below the material distribution pipe (7). The axis of the axial hole (88) is vertically intersected with the axis of the material distribution ring column (85). The included angle between the upper right end of the adjusting arc plate (84) and the right end of the top arc plate (83) is equal to the included angle between the axis of the axial hole (88) and the upper end axis of the material distribution pipe (7).

6. The seeding device for a seedling tray used in agricultural seedling raising according to claim 5, wherein: One end of the seed ejector rod (87) close to the axis of the material distribution ring column (85) is coaxially fixed with a slotted cylinder (89). The circumferential surface of the slotted cylinder (89) is provided with symmetrically distributed groove-like structures; An inner disk (810) is arranged at the axis of the material distribution ring column (85). The circumferential surface of the upper left side of the inner disk (810) is in a notch shape. The inner disk (810) is coaxially arranged with the fixed end disk (82). The inner disk (810) is located in the groove-like structure of the slotted cylinder (89). An elastic telescopic contact rod (811) is arranged at the axis of the slotted cylinder (89). One end of the elastic telescopic contact rod (811) is in sliding contact with the inner disk (810), and the other end of the elastic telescopic contact rod (811) is fixed to the seed ejector rod (87).

7. The seeding device for a seedling tray used in agricultural seedling raising according to claim 6, characterized in that: A terminal rod (812) is fixed on the front surface of the slotted cylinder (89). The material distribution ring column (85) is provided with an opening-like structure adapted to the terminal rod (812) at the position of the seed storage hole (86). A baffle (813) is arranged on the inner circumferential side of the material distribution ring column (85). The extended surface of the upper surface of the baffle (813) coincides with the axis of the material distribution ring column (85) and the upper end axis of the material distribution pipe (7). The distance between the outer circumferential surface of the baffle (813) and the material distribution ring column (85) is greater than the diameter of the terminal rod (812); The contact end of the material distribution pipe (7) with the adjusting arc plate (84) is inclined towards the adjusting arc plate (84).

8. The seeding device for a seedling tray used in agricultural seedling raising according to claim 7, wherein: A linkage ring (851) is coaxially fixed on the front surface of the material distribution ring column (85). A worm gear (852) is rotatably sleeved on the outer circumferential surface of the linkage ring (851). A worm (853) is engaged with the upper side of the worm gear (852); Tooth grooves (854) are provided on the outer circumferential surface of the linkage ring (851). A plurality of elastic dial plates (855) are fixed on the inner circumferential surface of the worm gear (852). The other ends of the elastic dial plates (855) are located inside adjacent tooth grooves (854); A power long shaft (856) is rotatably installed on the outer side of the seed box (3). The worm (853) is fixedly sleeved on the outer surface of the power long shaft (856).

9. The seeding device for a seedling tray used in agricultural seedling raising according to claim 5, characterized in that: A friction wheel (841) is coaxially fixed at one end of the adjusting arc plate (84) behind the fixed end disk (82). A friction plate (842) is arranged on the right side of the friction wheel (841). The upper strip rod (51) is slidably sleeved on the outer surface of the friction plate (842). The lower end surface of the friction plate (842) is fixed to the lower strip rod (52).

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