Volume-variable seed taking device and dibbler comprising same

Abstract

The invention provides a variable-volume seed taking device and a dibbler comprising the same, and belongs to the technical field of seed taking devices. The device comprises a fixed disc, a seed taking disc, a seed separating disc and a movable disc, the seed taking disc is fixed on the movable disc, the seed taking disc is disc-shaped, a plurality of seed taking holes are formed in the outer circumference of the seed taking disc, the seed separating disc is matched with the seed taking disc, the seed taking disc is positioned in the seed cavity and is provided with a gradually-higher inclined convex surface which is gradually heightened, and the gradually-higher inclined convex surface is positioned in a seed taking and conveying area between the seed separating disc and the seed taking disc; a seed taking nest is formed between a seed taking hole of the seed taking disc and the separation disc and is used for taking seeds and accommodating the seeds, and the volume of the seed taking nest is gradually reduced along with the increase of the height of the gradually-higher inclined convex surface. The gradually-high inclined convex surface is arranged on the seed separation disc and is located in a seed taking and conveying area, the inner volume of the seed taking nest is large during seed taking, seeds are more easily grabbed, redundant seeds can be removed along with rotation of the seed taking disc, and the volume of the seed taking nest is reduced, so that accurate sowing is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of seed taking devices, and in particular to a seed taking device with a variable volume and a seed drill comprising the seed taking device with a variable volume. Background Art

[0002] In the invention patents with application numbers CN201610008672.6, CN201610226167.9, CN201821494027.0, CN202120167618.2, CN201830649810.9, etc., a seeding mechanism consisting of a seeding disc type seeding device and a planar seeding disc in cooperation with each other for seeding and a seeding disc and a seeding disc in the interior of the seeding device has been disclosed. In these inventions, the seeding disc type seeding device and the seeding disc in cooperation with each other for seeding, especially in the precision sowing of small-grained seeds such as cotton, has been greatly simplified compared with the previous seed wheel type seeding method, with fewer parts. However, in practice, because the seeding disc is integrally cast by injection molding or the like, its shape is determined at the time of design, especially the seeding hole in its core part for seeding. Once manufactured, its shape, especially its volume, cannot change. During the sowing process, for example, when sowing cotton and soybeans, due to the variety of cotton or soybean varieties, there will be different sizes (diameter, length), and the key to taking seeds from the seed tray is the volume of the seed hole. If the seeds are too small, the reseeding rate will increase, and if the seeds are too large, the missed sowing rate will increase, which is not conducive to the qualified rate of sowing. Usually, in order to adapt to the size of the sown seeds, when the qualified rate is not high, it is necessary to replace the seed tray with different sizes of seed holes, which is labor-intensive, delays farming time, and is not conducive to the accuracy of mixed seeds of different sizes when sowing. In order to solve the problem of unstable missed sowing rate and reseeding rate caused by different seed sizes when sowing with a hole sower, and improve the qualified rate of sowing, it is necessary to design and improve the seed taking device, hoping to automatically change the volume of the seed taking hole during the seed taking process, so that both stable seed taking and less seeds will be taken, low missed sowing rate and low reseeding rate, and no frequent replacement of the seed taking device is required, and the structure is simple and reliable. Summary of the invention

[0003] In view of this, in order to solve the technical problems of missed seeds and repeated seeds caused by uneven seed sizes in the prior art during sowing, on the one hand, the present invention provides a seed taking device with variable volume, by arranging a gradually rising inclined convex surface from low to high on the seed spacing disk, and making the gradually rising inclined convex surface located in the seed taking and transporting area between the seed spacing disk and the seed taking disk. When taking seeds, the volume of the seed taking nest is larger, which makes it easier to grab seeds, and as the seed taking disk rotates, the volume of the seed taking nest becomes smaller and excess seeds can be cleared out, thereby achieving precise sowing.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A seed taking device with variable volume, comprising a fixed plate, a seed taking plate, a seed spacing plate and a moving plate;

[0006] The fixed plate is concentric with the movable plate and the movable plate can rotate, a seed cavity is formed between the seed spacing plate and the fixed plate, the seed taking plate is fixed on the movable plate, the seed taking plate is disc-shaped, and a plurality of seed taking holes are arranged on its outer circumference, the seed spacing plate is fixedly connected to the fixed plate, the seed spacing plate cooperates with the seed taking plate, the seed taking plate is located in the seed cavity, a gradually rising inclined convex surface is provided on the seed spacing plate, the gradually rising inclined convex surface is located in the seed taking and transporting area between the seed spacing plate and the seed taking plate, a seed taking nest is formed between the seed taking holes of the seed taking plate and the spacing plate, which is used for taking seeds and accommodating seeds, and the volume of the seed taking nest gradually decreases as the height of the gradually rising inclined convex surface increases.

[0007] Preferably, the height difference between the lowest end and the highest end of the gradually increasing convex surface does not exceed half of the seed diameter.

[0008] On the other hand, the present invention also provides a seed drill including the above-mentioned variable-volume seed taking device.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The variable volume seed taking device provided by the present invention provides a gradually rising inclined convex surface which gradually rises upward from low to high on the seed spacing disk, and the gradually rising inclined convex surface is located in the seed taking and seed transporting area between the seed spacing disk and the seed taking disk. The gap between the seed taking disk and the seed spacing disk is relatively large, and the volume of the seed taking nest formed between the seed taking hole and the seed spacing disk is relatively large, which is more conducive to seed taking and can improve the probability of seed taking. However, at the same time, the situation of taking multiple kinds of seeds from one nest will also occur. As the hole seeder moves forward, the seed taking disk rotates forward, and the gradually rising inclined convex surfaces of the seed taking disk and the seed spacing disk cooperate, the gap between the two becomes smaller, the volume of the seed taking nest becomes smaller, and excess seeds cannot be stored. The excess seeds will be squeezed out of the seed taking nest, thereby reducing the reseeding rate.

[0011] The present invention realizes the process of changing the volume of the seed hole from large to small, which is conducive to seeding when the volume is large and reduces the void rate. In the process of decreasing the volume, the excess seeds are squeezed out and the reseeding rate is reduced, thus effectively improving the sowing accuracy. It can be applied to various hole sowing devices.

[0012] The present invention combines the characteristics of large volume and small volume, thereby ensuring smooth seed grabbing and avoiding the phenomenon of redundant seeds being re-sown during the sowing process. Therefore, this design can significantly improve the sowing accuracy. In addition, this design can also meet the requirements of various seed drills and has good versatility.

[0013] The invention can adapt to different sowing environments and requirements, and can realize efficient sowing process in both large farms and small farms. At the same time, for different types of seeds, the device can also realize accurate sowing by adjusting parameters.

[0014] In summary, the present invention realizes an efficient and accurate sowing process through its unique design and structural characteristics. This device has important application value for improving the efficiency and quality of agricultural production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0016] Figure 2 It is a front view of the present invention;

[0017] Figure 3 A cross-sectional view of the present invention installed in a seed drill;

[0018] Figure 4 A three-dimensional diagram of a seed separation disk of the present invention;

[0019] In the figure, 1. seed taking plate; 11. seed taking hole; 2. seed spacing plate; 21. gradually rising inclined convex surface; 3. fixed plate; 4. moving plate; 5. seed taking nest; 6. plane; 7. seed taking and transporting area. DETAILED DESCRIPTION

[0020] like Figure 1-4 As shown, the present invention provides a seed taking device with variable volume, including a fixed plate 3, a seed taking plate 1, a seed spacing plate 2 and a movable plate 4, and the positions in the hole seeder are, in sequence, the fixed plate 3, the seed taking plate 1 (fixedly connected to the movable plate 4 by bolts, when the movable plate 4 rotates, the seed taking plate 1 rotates accordingly), and the seed spacing plate 2 (fixedly connected to the fixed plate 3).

[0021] The fixed plate 3 is concentric with the moving plate 4 and the moving plate 4 can rotate. The fixed plate 3 and the moving plate 4 are components of the existing seed drill, which will not be described in detail here.

[0022] A seed cavity is formed between the seed spacing disk 2 and the fixed disk 3 , the seed spacing disk 2 is fixedly connected to the fixed disk 3 , and the seed taking disk 1 is fixed on the moving disk 4 , that is, the seed taking disk 1 is located between the seed spacing disk 2 and the fixed disk 3 .

[0023] The seed taking disc 1 is disc-shaped and has a plurality of seed taking holes 11 on its outer circumference. The seed spacing disc 2 cooperates with the seed taking disc 1. The seed taking disc 1 is located in the seed cavity. The seed spacing disc 2 is provided with a gradually increasing inclined convex surface 21. The gradually increasing inclined convex surface 21 is located in the seed taking and seed transporting area 7 (such as Figure 1As shown), that is, the seed spacer 2 has a gradually rising convex surface 21 which gradually rises upward from low to high within the distance from the seed taking area 7 of the seed taking plate 1 to the upper seed entering the hole cavity behind the hole sower. Preferably, the height difference between the lowest end and the highest end of the gradually rising convex surface 21 does not exceed half of the seed diameter.

[0024] A seed taking hole 5 is formed between the seed taking hole 11 of the seed taking plate 1 and the partition plate 2 for taking and accommodating seeds. The volume of the seed taking hole 5 gradually decreases as the height of the gradually increasing inclined convex surface 21 increases.

[0025] The working process and principle of the above-mentioned variable volume seed taking device provided by the present invention are as follows:

[0026] When the hole sower is working, the seed taking disc 1 and the seed spacing disc 2 are perpendicular to the ground, and the seed taking and transporting area 7 of the seed taking disc 1 is located below the seed cavity. In the seed taking and transporting area 7, there is a gap A between the plane 6 of the seed taking disc 1 and the plane 6 of the seed spacing disc 2. The gap A is the height difference between the lowest end and the highest end of the gradually increasing inclined convex surface 21. Preferably, the gap A cannot exceed half of the seed diameter to ensure that the excess seeds are squeezed out and fall back into the seed taking and transporting area 7, thereby further reducing the reseeding of this hole and further reducing the reseeding rate of the hole sower as a whole. When the hole sower rotates forward, the seed spacing disc 2 is fixedly connected to the fixed disc 3, and the two do not rotate. The gradually increasing inclined convex surface 21 between the seed taking disc 1 and the seed spacing disc 2 cooperates. The gradually increasing inclined convex surface 21 gradually becomes higher toward the position of the seed taking disc 1, so the relative gap A between the seed taking disc 1 and the gradually increasing inclined convex surface 21 gradually becomes smaller. The volume of the seed taking nest 5 is the sum of the volume of the seed taking hole 11 itself and the space formed by the gap between the curve at the bottom of the seed taking hole 11 and the seed spacer disk 2.

[0027] During operation, since the shape of the seed-taking disk 1 is fixed, the volume of the seed-taking hole 11 thereon cannot change, and the gap A between the seed-taking disk 1 and the seed-spacing disk 2 gradually decreases due to the height change of the convexity of the gradually increasing oblique convex surface 21 on the seed-spacing disk 2, so the volume of the seed-taking nest 5 gradually decreases. At the position of the seed-taking and seed-transporting area 7 below the seed cavity of the hole sower, the volume of the seed-taking nest 5 is the largest, and at this time, the seeds are more easily entered into the seed-taking nest 5, and with the rotation of the hole sower, the position of the seed-taking hole 11 gradually changes, the gradually increasing oblique convex surface 21 becomes higher and higher, and the gap becomes smaller and smaller, so the volume of the seed-taking nest 5 also becomes smaller and smaller. At this time, more seeds cannot be stored in the seed-taking nest 5, and the excess seeds will be squeezed out and fall back into the seed-taking and seed-transporting area 7, thereby reducing the reseeding situation of this hole, and reducing the reseeding rate of the hole sower as a whole.

[0028] When the hole seeder is working, the volume of the seed taking nest 5 is the largest in the seed taking stage, and it is easiest to take seeds. The volume becomes smaller in the middle during the seed transportation process, and the excess seeds are cleared away. This achieves the goal of reducing the problem of poor seed taking and high hole rate caused by the small volume of the original hole seeder when taking seeds, and reducing the problem of large volume of the seed taking nest 5 of the original hole seeder, which makes it easy to take too many seeds and cause a high reseeding rate. At the same time, the design has a simple structure, low cost and stable performance.

[0029] The present invention also provides a seed drill, comprising the above-mentioned variable-volume seed taking device. The above-mentioned variable-volume seed taking device provided by the present invention can meet the requirements of various seed drills and has good versatility.

[0030] The hole sower can significantly improve the accuracy and efficiency of sowing by installing the variable-volume seeding device. In practical applications, the hole sower can adjust the volume of the seed taking hole 5 or the convex slope of the gradually increasing inclined convex surface 21 according to different crop types, sowing densities and soil conditions, thereby ensuring that the number of seeds sown in each hole is accurate and avoiding the problems of empty holes and overseeding. The structure is simple, the operation is convenient, and no complicated debugging and maintenance are required, which reduces the cost of use for farmers. At the same time, due to the versatility of the device, it can be widely applied to various types of hole sowers, providing more choices and convenience for agricultural production.

[0031] The above are only preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A seed taking device with variable volume, characterized in that: It includes a fixed plate, a seed taking plate, a seed spacing plate and a moving plate; The fixed plate is concentric with the movable plate and the movable plate can rotate, a seed cavity is formed between the seed spacing plate and the fixed plate, the seed taking plate is fixed on the movable plate, the seed taking plate is disc-shaped, and a plurality of seed taking holes are arranged on its outer circumference, the seed spacing plate is fixedly connected to the fixed plate, the seed spacing plate cooperates with the seed taking plate, the seed taking plate is located in the seed cavity, a gradually rising inclined convex surface is provided on the seed spacing plate, the gradually rising inclined convex surface is located in the seed taking and transporting area between the seed spacing plate and the seed taking plate, a seed taking nest is formed between the seed taking holes of the seed taking plate and the spacing plate, which is used for taking seeds and accommodating seeds, and the volume of the seed taking nest gradually decreases as the height of the gradually rising inclined convex surface increases.

2. A variable volume seed taking device according to claim 1, characterized in that: The height difference between the lowest end and the highest end of the gradually increasing inclined convex surface does not exceed half of the seed diameter.

3. A hole sowing device, characterized in that: It comprises a seed taking device with variable volume as described in claim 1 or 2.

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