Bidirectional seed sowing device

Abstract

The utility model discloses a bidirectional seed-metering device which comprises two seed-metering mechanisms, the two seed-metering mechanisms are symmetrically arranged on the left side and the right side of a connecting piece and are connected together in series through a seed-metering shaft, one end of the seed-metering shaft extends out of one seed-metering mechanism and is connected with a power transmission mechanism, and the other end of the seed-metering shaft is connected with a seed-metering mechanism. The power transmission mechanism provides power for the two seed metering mechanisms to drive seeds to be discharged from seed metering openings in the bottoms of the seed metering mechanisms. The seed metering device is simple in structure and reasonable in design, the number of the seed taking spoons is increased by combining the two seed metering mechanisms, so that the rotating speed of the seed metering device can be reduced, the service life of the seed metering device is prolonged, a machine works stably, seed metering is more accurate, the two seed metering mechanisms are combined, the seeding efficiency can be improved at the rotating speed without damaging seeds by the bucket wheels, and the seed metering efficiency is improved. And the operation speed, the production efficiency and the use benefits during seeding are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a bidirectional seed metering device. Background Technology

[0002] The seed metering device is a key component and core component of a precision seeder. Existing seed metering devices generally improve seeding efficiency by increasing the rotational speed of the seed metering shaft. As the rotational speed of the seed metering shaft increases, the rotational speed of the scoop wheel also increases. With the increased rotational speed of the scoop wheel, the seed damage rate also increases. Excessive scoop wheel rotational speed affects the stability of machine operation and also affects the service life of the machine. Therefore, the seeding efficiency is limited by the rotational speed of the scoop wheel, making it difficult for the seeder to achieve high-speed operation and meet the requirements of precision seeding. Summary of the Invention

[0003] This utility model provides a bidirectional seed metering device. By combining two seed metering mechanisms, the number of seed-collecting scoops is increased, thereby reducing the rotational speed of the seed metering device and improving its sowing efficiency while maintaining a rotational speed that does not damage the seeds. The specific technical solution is as follows:

[0004] A bidirectional seed metering device is characterized by comprising two seed metering mechanisms, which are symmetrically arranged on the left and right sides of a connector and connected together by a seed metering shaft. One end of the seed metering shaft extends out of one of the seed metering mechanisms and is connected to a power transmission mechanism, which provides power to the two seed metering mechanisms to drive the seeds to be discharged from the seed outlet at the bottom of the seed metering mechanism.

[0005] Furthermore, the two seeding mechanisms are inclined and are driven by a power transmission mechanism to rotate the seeding shaft, thereby driving the two seeding mechanisms to seed synchronously.

[0006] Furthermore, the seed metering mechanism includes a chain box bottom cover and a chain box top cover fastened to the chain box bottom cover. A drive wheel is installed on the upper part of the chain box bottom cover, and a driven wheel is installed on the lower part of the chain box bottom cover. A guide belt is fitted onto the drive wheel and the driven wheel. The seed metering shaft is connected to the drive wheel, thereby driving the guide belt to run. Several seed support plates are evenly distributed on the outer wall of the guide belt. A seed separator plate, a spoon wheel, and a cover are arranged in sequence on the outer side of the drive wheel. The cover is connected to the connector, and a seed metering pipe connected to the seed box is provided on the cover. The seed separator plate is located between the drive wheel and the spoon wheel. During operation, the seed separator plate remains stationary, and the spoon wheel rotates with the drive wheel. The seed-taking spoon of the spoon wheel moves the seeds and sends the seeds through the notch of the seed separator plate into the seed support plate of the guide belt.

[0007] Furthermore, the seed tray has a U-shaped structure, which allows it to better transport seeds.

[0008] Furthermore, a U-shaped frame is provided at the bottom of the connector, and the two ends of the U-shaped frame pass through the elongated holes of the chain box bottom cover and are connected to the cover.

[0009] Furthermore, one side of the connector is provided with an outer edge, on which several adjustment holes are evenly distributed. The seed separator plate is provided with a lug that cooperates with the adjustment holes. The adjustment component passes through the lug of the seed separator plate and is inserted into the adjustment hole. The seed separator plate is rotated according to the size of the seeds to adjust the size of the filling area, thereby adapting to the sowing of different seeds.

[0010] Furthermore, a notch is provided on the cover, and a brush is installed at the notch. The brush is located above the notch of the seed separator plate and has a certain degree of hardness to move the seeds and prevent them from clogging.

[0011] Furthermore, the guide belt has several through holes evenly distributed on it. The through holes are located between the seed support plates. In order to prevent the guide belt from detaching from the drive wheel during transmission, a first conical tooth that cooperates with the through holes of the guide belt is provided on the outer wall of the drive wheel.

[0012] Furthermore, a positioning wheel is provided in the middle of the bottom cover of the chain box. The outer wall of the positioning wheel is provided with a second conical tooth that matches the through hole of the guide belt. The positioning wheel can prevent the guide belt from slipping and avoid the occurrence of empty seeding.

[0013] Furthermore, the top cover of the chain box is provided with an upper positioning plate and a lower positioning plate. The top cover of the chain box is fastened to the bottom cover of the chain box. The upper positioning plate and the lower positioning plate support the guide belt, which can further prevent the guide belt from vibrating during transmission.

[0014] This utility model has a simple structure and reasonable design. By combining two seed metering mechanisms, the number of seed scoops can be increased, thereby reducing the rotation speed of the seed meterer, increasing its service life, making the machine work stably, and making seed metering more accurate. Combining the two seed metering mechanisms can improve the sowing efficiency at a rotation speed that does not damage the seeds, greatly improving the operation speed, production efficiency and use benefits during sowing. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is the front view of this utility model;

[0017] Figure 3 This is the right view of the present invention;

[0018] Figure 4 This is an exploded structural diagram of the present invention;

[0019] Figure 5 This is a structural schematic diagram of the chain box bottom cover of this utility model;

[0020] Figure 6This is a schematic diagram of the structure of the chain box top cover of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the cover of this utility model;

[0022] Figure 8 This is a schematic diagram of the conductor strip of this utility model;

[0023] Figure 9 This is a schematic diagram of the structure of the drive wheel of this utility model;

[0024] Figure 10 This is a schematic diagram of the structure of the seed separator of this utility model;

[0025] Figure 11 This is a schematic diagram of the structure of the spoon wheel of this utility model;

[0026] Figure 12 This is a schematic diagram of the positioning wheel of this utility model;

[0027] Figure 13 This is a structural schematic diagram of the connector of this utility model;

[0028] Figure 14 This is a schematic diagram of the structure of one of the seeding mechanisms of this utility model, after removing the cover and the top cover of the chain box. Detailed Implementation

[0029] To better understand the purpose, function, and specific design of this utility model, the bidirectional seed metering device of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] like Figures 1-3 As shown, the bidirectional seed metering device of this utility model includes two seed metering mechanisms 1. The two seed metering mechanisms 1 are symmetrically arranged on the left and right sides of the connecting member 2 and connected together by a seed metering shaft 3. One end of the seed metering shaft 3 extends out of one of the seed metering mechanisms 1 and is connected to a power transmission mechanism. The power transmission mechanism provides power to the two seed metering mechanisms, driving the seeds to be discharged from the seed discharge port 01 at the bottom of the seed metering mechanism 1.

[0031] The two seeding mechanisms 1 are inclined and drive the seeding shaft 3 to rotate through the power transmission mechanism, thereby driving the two seeding mechanisms 1 to seed synchronously. The power transmission mechanism of this utility model can be a gearbox, which is a known technology and will not be described in detail here.

[0032] The two seeding mechanisms 1 described above have the same structure. For ease of understanding and explanation, one of the seeding mechanisms 1 will be used as an example. Figure 4 , Figure 8 , Figure 10 and Figure 14As shown, the seed metering mechanism 1 includes a chain box bottom cover 11 and a chain box top cover 12 fastened to the chain box bottom cover 11. The chain box bottom cover 11 is connected and fixed to the connector 2 by screws. A drive wheel 15 is installed on the upper part of the chain box bottom cover 11, and a driven wheel 19 is installed on the lower part of the chain box bottom cover 11. A guide belt 14 is fitted onto the drive wheel 15 and the driven wheel 19. The seed metering shaft 3 is connected to the drive wheel 15, thereby driving the guide belt 14 to run. Several seed support plates 141 are evenly distributed on the outer wall of the guide belt 14. A seed separator 16, a spoon wheel 17, and a cover 13 are arranged sequentially on the outer side of the drive wheel 15. The cover 13 is connected to the connector 2. A seed discharge pipe 131 connected to the seed box is provided on the cover 13. The seed separator 16 is located between the drive wheel 15 and the spoon wheel 17. During operation, the seed separator 16 remains stationary, while the spoon wheel 17 rotates with the drive wheel 15. The seed scoop 171 of the spoon wheel 17 moves the seeds and sends them through the notch 161 of the seed separator 16 onto the seed support plate 141 of the guide belt 14.

[0033] like Figure 8 As shown, the seed tray 141 and the guide belt 14 are an integral structure. The guide belt 14 is a soft guide belt made of polyurethane material that is resistant to high and low temperatures and is highly wear-resistant. The seed tray 141 has a U-shaped structure, which allows it to better transport seeds.

[0034] like Figure 4 , Figure 8 and Figure 9 As shown, the guide belt 14 has several through holes 142 evenly distributed on it. The through holes 142 are located between the seed support plate 141 and the seed support plate 142. In order to prevent the guide belt 14 from disengaging from the drive wheel 15 during transmission, a first conical tooth 151 that cooperates with the through holes 142 of the guide belt 14 is provided on the outer wall of the drive wheel 15. During transmission, the first conical tooth 151 of the guide belt 14 can be embedded in the through holes 142 of the guide belt 14.

[0035] like Figure 4 , Figure 12 and Figure 14 As shown, a positioning wheel 18 is provided in the middle of the bottom cover 11 of the chain box. The outer wall of the positioning wheel 18 is provided with a second conical tooth 181 that cooperates with the through hole of the guide belt 14. During the transmission process, the second conical tooth 151 of the guide belt 14 can be embedded in the through hole 142 of the guide belt 14. The positioning wheel 18 can prevent the guide belt 14 from slipping and avoid the occurrence of empty space.

[0036] like Figure 4 and Figure 6 As shown, the top cover 12 of the chain box is provided with an upper positioning plate 122 and a lower positioning plate 123. The top cover 12 of the chain box is fastened to the bottom cover 11 of the chain box. The upper positioning plate 122 and the lower positioning plate 123 support the guide belt 14, which can further prevent the guide belt 14 from vibrating during the transmission process.

[0037] like Figure 4 , Figure 5 , Figure 13 and Figure 14 As shown, the bottom of the connector 2 is provided with a U-shaped frame 22, and the two ends of the U-shaped frame 22 pass through the elongated hole 112 of the chain box bottom cover 11 and are connected to the cover 13.

[0038] like Figure 1 , Figure 4 , Figure 10 , Figure 13 and Figure 14 As shown, one side of the connector 2 has an outer edge 21, on which several adjusting holes 211 are evenly distributed. The seed separator plate 16 has a lug 162 that cooperates with the adjusting holes 211. The adjusting member 6 passes through the lug 162 of the seed separator plate 16 and is inserted into the adjusting hole 211. The seed separator plate 16 is rotated according to the size of the seeds to adjust the size of the seed filling area, thereby accommodating the sowing of different seeds. The other side of the connector 2 has a connecting seat 23, through which the present invention can be fixed on the seeder.

[0039] like Figure 4 , Figure 6 and Figure 7 As shown, a notch is provided on the cover 13, and a brush 132 is installed at the notch. The brush 132 is located above the notch 161 of the seed separator plate 16. The brush 132 has a certain hardness and is used to move the seeds to avoid seed blockage.

[0040] like Figure 3 and Figure 14 As shown, the driving wheels 15 of the two seed metering mechanisms 1 of this utility model are connected by seed metering shaft 3; the driven wheels 19 of the two seed metering mechanisms 1 are connected by first pin 4; and the positioning wheels 18 of the two seed metering mechanisms 1 are connected by second pin 5.

[0041] like Figure 1 , Figure 5 and Figure 6 As shown, the lower end of the chain box bottom cover 11 is provided with a first groove 111, and the lower end of the chain box top cover 12 is provided with a second groove 121. The chain box top cover 12 is fastened onto the chain box bottom cover 11, and a seed discharge port 01 is formed at the bottom.

[0042] like Figure 1 As shown, both the cover 13 and the chain box top cover 12 of this utility model are made of transparent material.

[0043] In use, the seed dispensing pipes 131 of the two seed dispensing mechanisms 1 are connected to the seed box respectively. The seeds in the seed box enter through the seed dispensing pipes, and the seed scoop 171 of the scoop wheel 17 feeds the seeds through the notch 161 of the seed separator plate 16 into the guide belt 14. The seeds fall onto the seed support plate 141 of the guide belt 14, and through the transmission of the guide belt 14, the seeds on the seed support plate 141 are sown into the ground.

[0044] In this embodiment, there are 28 seed-collecting spoons 171 distributed circumferentially along the spoon wheel 17, and the total number of seed-collecting spoons 171 in the two seed metering mechanisms 1 is 56. The spoon wheel inside the seed metering mechanism 1 can be replaced with 18 teeth, 24 teeth, etc., according to the regional sowing requirements, and this utility model does not limit this.

[0045] This invention increases the number of seed-picking spoons 171 by combining two seed metering mechanisms, thereby reducing the rotation speed of the seed meterer, increasing its service life, making the machine work more stably, and making seed metering more accurate. Combining the two seed metering mechanisms can improve the sowing efficiency at a rotation speed that does not damage the seeds, greatly improving the operation speed, production efficiency and use benefits during sowing.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bidirectional seed metering device, characterized in that, It includes two seed metering mechanisms, which are symmetrically arranged on the left and right sides of the connector and connected together by a seed metering shaft. One end of the seed metering shaft extends out of one of the seed metering mechanisms and is connected to a power transmission mechanism. The power transmission mechanism provides power to the two seed metering mechanisms, driving the seeds to be discharged from the seed outlet at the bottom of the seed metering mechanism. The two seed metering mechanisms are inclined and are driven by a power transmission mechanism to rotate the seed metering shaft, thereby driving the two seed metering mechanisms to seed synchronously. The seed metering mechanism includes a chain box bottom cover and a chain box top cover fastened to the chain box bottom cover. A drive wheel is installed on the upper part of the chain box bottom cover, and a driven wheel is installed on the lower part of the chain box bottom cover. A guide belt is fitted onto the drive wheel and the driven wheel. The seed metering shaft is connected to the drive wheel, thereby driving the guide belt to run. Several seed support plates are evenly distributed on the outer wall of the guide belt. A seed separator plate, a spoon wheel, and a cover are arranged in sequence on the outer side of the drive wheel. The cover is connected to a connector, and a seed metering pipe connected to the seed box is provided on the cover. The seed separator plate is located between the drive wheel and the spoon wheel. During operation, the seed separator plate is stationary, and the spoon wheel rotates with the drive wheel. The seed-picking spoon of the spoon wheel moves the seeds and sends the seeds through the notch of the seed separator plate into the seed support plate of the guide belt.

2. The bidirectional seed metering device according to claim 1, characterized in that, The seed tray has a U-shaped structure, which allows it to better transport seeds.

3. The bidirectional seed metering device according to claim 1, characterized in that, The bottom of the connector is provided with a U-shaped frame, and the two ends of the U-shaped frame pass through the elongated holes of the bottom cover of the chain box and are connected to the cover.

4. The bidirectional seed metering device according to claim 3, characterized in that, The connector has an outer edge on one side, and several adjustment holes are evenly distributed on the outer edge. The seed separator plate is provided with a lug that matches the adjustment holes. The adjustment piece passes through the lug of the seed separator plate and is inserted into the adjustment hole. The seed separator plate is rotated according to the size of the seeds to adjust the size of the filling area, thereby adapting to the sowing of different seeds.

5. The bidirectional seed metering device according to claim 4, characterized in that, The cover has a notch, and a brush is installed at the notch. The brush is located above the notch of the seed separator plate. The brush has a certain degree of hardness and is used to move the seeds to prevent them from clogging.

6. The bidirectional seed metering device according to claim 1, characterized in that, The guide belt has several through holes evenly distributed between the seed support plates. In order to prevent the guide belt from detaching from the drive wheel during transmission, a first conical tooth that mates with the through holes of the guide belt is provided on the outer wall of the drive wheel.

7. The bidirectional seed metering device according to claim 6, characterized in that, A positioning wheel is provided in the middle of the bottom cover of the chain box. The outer wall of the positioning wheel is provided with a second conical tooth that matches the through hole of the guide belt. The positioning wheel can prevent the guide belt from slipping and avoid the occurrence of empty seeding.

8. The bidirectional seed metering device according to claim 7, characterized in that, The top cover of the chain box is equipped with an upper positioning plate and a lower positioning plate. The top cover of the chain box is fastened to the bottom cover of the chain box. The upper positioning plate and the lower positioning plate support the guide belt, which can further prevent the guide belt from vibrating during transmission.

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