Precise seed-metering device for corn breeding test

Abstract

The invention discloses a precision seed-metering device for a corn breeding test, which comprises a rack (1) which can be dragged by dragging equipment such as a tractor and the like, and the rack (1) is fixedly provided with a precision seed-metering device; the precise seed metering device comprises a seed storage box (2) capable of storing corn seeds, and a driving device for driving the corn seeds in the seed storage box (2) to be conveyed one by one is mounted on one side of the seed storage box (2). The corn seed metering device is simple in structure, the seed storage groove reserved in the seed metering disc can really achieve precision seeding of corn in the breeding experiment process in a gas adsorption mode, and only one corn seed is discharged at a time, so that seed metering is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field related to agricultural breeding equipment, and in particular to a precision seed metering device used for corn breeding experiments. Background Art

[0002] Corn has high nutritional value and is an excellent food crop. It is a high-yield food crop and an important source of feed for animal husbandry, breeding, aquaculture, etc. At present, traditional crane-bill seed meters are often used for sowing in the process of corn breeding experiments. It is well known that due to the large seed holes of the crane-bill seed meter, the number of seeds discharged at one time is often not fixed. In addition to requiring the recording of the complete growth cycle characteristics of corn, the corn seeds used in corn breeding experiments also need to record the germination rate of the corn variety. Therefore, a precision seed meter that can discharge one corn seed each time is required, so as to facilitate the later statistics of the overall sowing quantity and the overall germination rate. Summary of the Invention

[0003] The object of the present invention is to provide a precision seed metering device for corn breeding experiments, which can effectively solve the problems existing in the background technology.

[0004] In order to solve the problems existing in the background technology, the invention comprises a frame 1 that can be towed by a tractor or other towing equipment, on which a precision seed meter is fixedly mounted; the precision seed meter includes a seed storage box 2 for storing corn seeds, and a drive device for driving the corn seeds in the seed storage box 2 to be transported grain by grain is installed on one side of the seed storage box 2; The driving device includes a first driving box 51 and a second driving box 52 that are vertically connected. A vacuum device and a seed disc 4 are installed inside the second driving box 52. A driving shaft 3 for driving the vacuum device to alternately vacuum is provided inside the first driving box 51. An active bevel gear 6 is installed at one end of the driving shaft 3. The end of the driving shaft 3 opposite to the active bevel gear 6 passes through a bearing seat fixedly installed on the first driving box 51 and is connected to a driven sprocket 7. The two ends of the bottom of the second driving box 52 are respectively installed with a rotating shaft 8 that is rotatably connected thereto. A driving roller 9 is installed at the end of each rotating shaft 8. A driving sprocket 10 is fixedly installed in the middle of one of the rotating shafts 8. The driven sprocket 7 and the driving sprocket 10 are matched through a meshing chain 11 for chain transmission. The seed disc 4 can rotate against the inner wall of the second driving box 52.

[0005] A driven bevel gear 30 meshing with the driving bevel gear 6 is provided on one side thereof. The driven bevel gear 30 is fixedly mounted on the first driven shaft 12. The bottom of the first driven shaft 12 is concentrically fixedly mounted on the first shaft disc 13. The edge of the first shaft disc 13 is rotatably connected to the inner wall of the first drive box 51 through the first annular guide rail 14. A second shaft disc 15 concentric with the second drive box 52 is provided inside the second drive box 52, and a second driven shaft 16 is concentrically installed at one end of the second shaft disc 15. The edge of the second shaft disc 15 is rotatably connected to the inner wall of the second drive box 52 through a second annular guide rail 17. The seed disc 4 and the second shaft disc 15 are connected and fixed into one body through the second driven shaft 16. The first shaft disc 13 and the second shaft disc 15 are connected by several annularly arranged piston shafts 17. The two ends of the piston shaft 17 are respectively slidably matched with the first shaft disc 13 and the second shaft disc 15. The piston shaft 17 is an L-shaped structure as a whole.

[0006] The vacuum device includes several piston tubes 18 corresponding to the piston shaft 17. The end of the piston shaft 17 extends into the corresponding piston tube 18 and docks with the piston head 19. The piston head 19 can fit the inner wall of the piston tube 18 and slide in a sealed manner. Several piston tubes 18 are fixedly installed on the end face of the seed disc 4 in a circular array state. Several seed storage tanks 20 corresponding to the piston tubes 18 are provided on the end face of the seed disc 4 opposite to the piston tube 18. The bottom of each seed storage tank 20 is penetrated by a through hole 21 that communicates with the interior of the piston tube 18.

[0007] The bottom of the seed storage box 2 extends downward to form a cap 22 that can be tightly fitted on the edge of the end face of the second drive box 52. A partition 23 is radially arranged inside the cap 22. One end of the partition 23 is equipped with a hinge shaft 24 that can be rotatably connected to the end face of the seed disk 4. The end face of the seed disk 4 can rotate in contact with the edge of the partition 23.

[0008] A seed leakage pipe 25 communicating with the interior of the cap 22 extends radially downward from the bottom of the cap 22 , and a coulter 26 is conventionally installed on the outer side of the seed leakage pipe 25 .

[0009] The top of the seed storage box 2 is conventionally provided with a feed opening, and a screw cap 27 is provided at the feed opening.

[0010] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: the structure is simple, and the seed storage tank reserved on the seeding tray can truly achieve precise sowing of corn during the breeding experiment through gas adsorption, and only one corn seed is sown at a time, so the seeding is also more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the driving device in the present invention. DETAILED DESCRIPTION

[0013] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0014] See Figure 1-2 This specific embodiment is implemented by adopting the following technical solution, which comprises a frame 1 that can be towed by a tractor or other towing equipment, and a precision seed metering device is fixedly installed on the frame 1; the precision seed metering device comprises a seed storage box 2 for storing corn seeds, and a driving device for driving the corn seeds in the seed storage box 2 to be transported grain by grain is installed on one side of the seed storage box 2; The driving device includes a first driving box 51 and a second driving box 52 that are vertically connected. A vacuum device and a seed disc 4 are installed inside the second driving box 52. A driving shaft 3 for driving the vacuum device to alternately vacuum is provided inside the first driving box 51. An active bevel gear 6 is installed at one end of the driving shaft 3. The end of the driving shaft 3 opposite to the active bevel gear 6 passes through a bearing seat fixedly installed on the first driving box 51 and is connected to a driven sprocket 7. The two ends of the bottom of the second driving box 52 are respectively installed with a rotating shaft 8 that is rotatably connected thereto. A driving roller 9 is installed at the end of each rotating shaft 8. A driving sprocket 10 is fixedly installed in the middle of one of the rotating shafts 8. The driven sprocket 7 and the driving sprocket 10 are matched through a meshing chain 11 for chain transmission. The seed disc 4 can rotate against the inner wall of the second driving box 52.

[0015] A driven bevel gear 30 meshing with the driving bevel gear 6 is provided on one side thereof. The driven bevel gear 30 is fixedly mounted on the first driven shaft 12. The bottom of the first driven shaft 12 is concentrically fixedly mounted on the first shaft disc 13. The edge of the first shaft disc 13 is rotatably connected to the inner wall of the first drive box 51 through the first annular guide rail 14. A second shaft disc 15 concentric with the second drive box 52 is provided inside the second drive box 52, and a second driven shaft 16 is concentrically installed at one end of the second shaft disc 15. The edge of the second shaft disc 15 is rotatably connected to the inner wall of the second drive box 52 through a second annular guide rail 17. The seed disc 4 and the second shaft disc 15 are connected and fixed into one body through the second driven shaft 16. The first shaft disc 13 and the second shaft disc 15 are connected by several annularly arranged piston shafts 17. The two ends of the piston shaft 17 are respectively slidably matched with the first shaft disc 13 and the second shaft disc 15. The piston shaft 17 is an L-shaped structure as a whole.

[0016] The vacuum device includes several piston tubes 18 corresponding to the piston shaft 17. The end of the piston shaft 17 extends into the corresponding piston tube 18 and docks with the piston head 19. The piston head 19 can fit the inner wall of the piston tube 18 and slide in a sealed manner. Several piston tubes 18 are fixedly installed on the end face of the seed disc 4 in a circular array state. Several seed storage tanks 20 corresponding to the piston tubes 18 are provided on the end face of the seed disc 4 opposite to the piston tube 18. The bottom of each seed storage tank 20 is penetrated by a through hole 21 that communicates with the interior of the piston tube 18.

[0017] The bottom of the seed storage box 2 extends downward to form a cap 22 that can be tightly fitted on the edge of the end face of the second drive box 52. A partition 23 is radially arranged inside the cap 22. One end of the partition 23 is equipped with a hinge shaft 24 that can be rotatably connected to the end face of the seed disk 4. The end face of the seed disk 4 can rotate in contact with the edge of the partition 23.

[0018] A seed leakage pipe 25 communicating with the interior of the cap 22 extends radially downward from the bottom of the cap 22 , and a coulter 26 is conventionally installed on the outer side of the seed leakage pipe 25 .

[0019] The top of the seed storage box 2 is conventionally provided with a feed opening, and a screw cap 27 is provided at the feed opening.

[0020] The following further describes the method and principle of using the technical solution in this specific embodiment with reference to the accompanying drawings: When in use, first install the seed metering device on the designated towing equipment, and the connection method can be installed by conventional bolt screw connection. Then, the screened corn seeds are put into the seed storage box 2 through the feed port, and then the towing device is started to drive the entire seed metering device to move forward together. During the forward movement of the seed metering device, the coulter 26 will first open a seed groove on the surface of the soil. At the same time, the rotating driving roller 9 drives the driving shaft 3 to rotate through the chain 11 between the active sprocket 10 and the driven sprocket 7. The rotation of the driving shaft 3 is further driven by the first driven shaft 12 to drive the first shaft disc 13 to rotate synchronously through the active bevel gear 6 and the driven bevel gear 30 that mesh with each other. During the rotation process, the first shaft disc 13 uses the piston shaft 17 with an overall L-shaped structure to drive the second shaft disc 15 and the seed disc 4 to rotate synchronously. The rotation of the seed disc 4 can rotate the corn grains that are trapped above the partition 23 and enter the seed storage tank 20 to the bottom of the partition 23, thereby achieving the purpose of finally discharging the corn grains through the seed leakage tube 25; In order to ensure that the corn kernels retained above the partition 23 can completely enter the seed storage tank 20, when the first shaft disc 13 and the second shaft disc 15 are transmitted through the piston shaft 17, the piston shaft 17 located inside the piston tube 18 will inevitably move the piston head 19 along the axial direction of the piston tube 18. That is to say, when the seed disc 4 is rotating, the current seed storage tank 20 is always in an intake state of absorbing corn seeds when it rotates from above the partition 23 to below the partition 23, thereby achieving the purpose of fixing a corn seed in the seed storage tank through the vacuum state, and when the seed storage tank 20 is rotating from below the partition 23 to above the partition 23, the seed storage tank 20 is always in an exhaust state of pushing out the corn seeds.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A precision seed metering device for corn breeding experiments, comprising a frame (1) that can be towed by a tractor or other towing equipment, the frame (1) being fixedly mounted with the precision seed metering device; The precision seed metering device comprises a seed storage box (2) for storing corn seeds, and a driving device for driving the corn seeds in the seed storage box (2) to be transported grain by grain is installed on one side of the seed storage box (2); The driving device comprises a first driving box (51) and a second driving box (52) which are vertically connected. A vacuum device and a seeding disk (4) are installed inside the second driving box (52). A driving shaft (3) for driving the vacuum device to alternately vacuum is provided inside the first driving box (51). One end of the driving shaft (3) is installed with an active bevel gear (6). The end of the driving shaft (3) opposite to the active bevel gear (6) passes through a bearing seat fixedly installed on the first driving box (51) and is connected to a driven sprocket (7). The two ends of the bottom of the second driving box (52) are respectively installed with a rotating shaft (8) connected to the driven sprocket (8). The end of each rotating shaft (8) is installed with a driving roller (9). A driving sprocket (10) is fixedly installed in the middle of one of the rotating shafts (8). The driven sprocket (7) and the driving sprocket (10) are matched by a chain transmission through a meshing chain (11). The seeding disk (4) can rotate in contact with the inner wall of the second driving box (52).

2. A precision seed metering device for corn breeding experiments according to claim 1, characterized in that A driven bevel gear (30) meshing with the driving bevel gear (6) is provided on one side thereof, the driven bevel gear (30) being fixedly mounted on the first driven shaft (12), the bottom of the first driven shaft (12) being concentrically fixedly mounted on the first shaft disc (13), the edge of the first shaft disc (13) being rotatably connected to the inner wall of the first drive box (51) via a first annular guide rail (14); The interior of the second drive box (52) is provided with a second shaft disc (15) concentric therewith, and a second driven shaft (16) is concentrically mounted on one end of the second shaft disc (15), and the edge of the second shaft disc (15) is rotatably connected to the inner wall of the second drive box (52) through a second annular guide rail (17), and the seeding disc (4) and the second shaft disc (15) are connected and fixed into one body through the second driven shaft (16), and the first shaft disc (13) and the second shaft disc (15) are connected through a plurality of annularly arranged piston shaft rods (17), and the two ends of the piston shaft rod (17) are respectively slidably matched with the first shaft disc (13) and the second shaft disc (15), and the piston shaft rod (17) is an L-shaped structure as a whole.

3. A precision seed metering device for corn breeding experiments according to claim 2, characterized in that The vacuum device comprises several piston tubes (18) corresponding to the piston shaft (17), the end of the piston shaft (17) extends into the corresponding piston tube (18) and docks with the piston head (19), and the piston head (19) can fit the inner wall of the piston tube (18) in a sealed sliding fit, and several piston tubes (18) are fixedly installed on the end face of the seeding disk (4) in a circular array state, and the end face of the seeding disk (4) opposite to the piston tube (18) is provided with several seed storage tanks (20) corresponding to the piston tube (18), and the bottom of each seed storage tank (20) is provided with a through hole (21) communicating with the inside of the piston tube (18).

4. The precision seed metering device for corn breeding experiments according to claim 1, characterized in that A cap (22) is extended downward from the bottom of the seed storage box (2) and can be tightly sleeved on the edge of the end face of the second drive box (52). A partition (23) is radially arranged inside the cap (22). One end of the partition (23) is equipped with a hinge shaft (24) that can be rotatably connected and matched with the end face of the seeding disk (4). The end face of the seeding disk (4) can rotate in contact with the edge of the partition (23).

5. A precision seed metering device for corn breeding experiments according to claim 4, characterized in that A seed leakage pipe (25) communicating with the interior of the cap (22) is radially extended downward from the bottom of the cap (22), and a plow (26) is conventionally installed on the outer side of the seed leakage pipe 25.

6. The precision seed metering device for corn breeding experiments according to claim 1, characterized in that The top of the seed storage box (2) is conventionally provided with a feed opening, and a screw cap (27) is provided at the feed opening.

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