Sowing uniformity detection grid plate of seeding machine
By designing a grid plate for detecting the sowing uniformity of a seeder, the problem of expensive and complex detection devices in existing technologies is solved, and a low-cost and easy-to-operate method for detecting sowing uniformity is provided, which improves detection accuracy and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-24
AI Technical Summary
There is a lack of a simple, low-cost and easy-to-operate device in the current technology to detect the seeding uniformity of seeders, especially for small agricultural production enterprises and individual farmers, as sensor equipment is expensive and complicated to install and debug.
A seed uniformity detection grid plate for a seeder has been designed, comprising a grid plate, a transparent plate, threaded columns, nuts, screws, pads, and counterweights. The number of seeds is counted through the grid grooves, and the seed uniformity is calculated by combining the range method, which simplifies the detection process.
It enables low-cost and easy-to-operate detection of sowing uniformity, improves detection accuracy and reliability, and is suitable for small agricultural production enterprises and individual farmers.
Smart Images

Figure CN224034944U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seed uniformity detection in seeders, and more specifically to a grid plate for seed uniformity detection in seeders. Background Technology
[0002] In agricultural production, the uniformity of seeding in a seeder is one of the key indicators for evaluating its performance. Seeding uniformity directly affects crop growth and final yield. Uneven seeding can lead to overly dense cropping in some areas, causing competition for nutrients and space and resulting in poor growth; while sparse cropping in other areas wastes land resources and reduces overall yield. Currently, there are various methods for detecting the uniformity of seeding in seeders, but all have certain limitations. Some methods rely on advanced sensor technologies, such as photoelectric sensors and laser sensors. These sensors can accurately detect the drop position and quantity of seeds, thereby analyzing seeding uniformity. However, such sensors are expensive, increasing detection costs and placing a heavy economic burden on small agricultural enterprises or individual farmers. Moreover, the installation and debugging of sensors are complex, requiring professional technicians, which presents certain difficulties in practical applications. Currently, there is no effective solution for detecting the uniformity of seeding in seeders using a simple, low-cost, and easy-to-operate device such as a grid plate. Utility Model Content
[0003] To overcome the shortcomings of the existing technology, this utility model provides a grid plate for detecting the sowing uniformity of a seeder. Its beneficial effect is that this utility model can detect the sowing uniformity of a seeder through this simple device of a grid plate.
[0004] A seed uniformity detection grid plate for a seeder includes a grid plate with multiple grid grooves evenly distributed on the grid plate, the multiple grid grooves being of the same size.
[0005] A removable transparent panel is provided on the upper side of the grid plate.
[0006] The grid plate is fixed with threaded posts on both the left and right sides, and the transparent plate is fixed with tabs on both the left and right sides. The two tabs can be inserted into the two threaded posts respectively.
[0007] Each of the threaded posts has a nut threadedly connected to its upper part.
[0008] The grid plate is fixed with internal threaded cylinders at the four lower corners.
[0009] Each of the internally threaded cylinders is threaded with a screw.
[0010] A pad is fixed to the lower end of the screw.
[0011] The edge of the pad is provided with multiple anti-slip grooves in a ring shape.
[0012] A counterweight is fixed to the lower side of the grid plate.
[0013] The transparent panel is made of transparent plastic. Attached Figure Description
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0015] Figure 1 A schematic diagram of the structure of a grid plate for detecting the sowing uniformity of a seeder. Figure 1 ;
[0016] Figure 2 A schematic diagram of the structure of a grid plate for detecting the sowing uniformity of a seeder. Figure 2 ;
[0017] In the diagram: 1. Grid plate; 2. Pad; 3. Anti-slip groove; 4. Screw; 5. Internal threaded cylinder; 6. Threaded column; 7. Transparent plate; 8. Nut; 9. Protrusion; 10. Grid groove; 11. Counterweight. Detailed Implementation
[0018] like Figure 1-2 As shown;
[0019] The seed uniformity detection grid plate of the seeder includes a grid plate 1, on which multiple grid grooves 10 are evenly distributed, and the multiple grid grooves 10 are of the same size.
[0020] The testing method is as follows:
[0021] Conduct a comprehensive inspection and adjustment of the seeder to ensure it is in normal working condition.
[0022] Prepare a sufficient number of grid plates of the appropriate specifications. Inspect the grid plates for damage, deformation, or other problems, and ensure that the size and distribution of the grid slots meet the design requirements.
[0023] Select a test site that is flat and has uniform soil texture. Level and clean the site, removing debris, stones, etc., to ensure that the seeder can operate normally.
[0024] The grid plates were evenly distributed in the test site.
[0025] The seeder to be tested was used to perform sowing operations in the test area with the grid panels set up. During the sowing process, the travel speed of the seeder and the sowing parameters should be kept stable.
[0026] After sowing is completed, count and record the number of seeds in each grid cell.
[0027] Calculate sowing uniformity: Calculate sowing uniformity based on the number of seeds in each grid cell obtained from statistics.
[0028] Calculation of seed uniformity using the range method:
[0029] The range is the difference between the maximum and minimum values in a set of data, and it can reflect the degree of dispersion of the data to some extent. In the detection of sowing uniformity, the smaller the range, the more concentrated the distribution of seeds in each grid cell, and the better the sowing uniformity.
[0030] Calculation steps:
[0031] Find the maximum and minimum number of seeds in all grid slots.
[0032] To calculate the range, for example: Suppose the number of seeds in the 5 grid slots are 8, 10, 12, 9, and 11 respectively. The maximum value is 12 and the minimum value is 8, then the range is 12 - 8 = 4.
[0033] To improve the accuracy and reliability of test results, it is recommended to perform multiple repeated tests. After each test, analyze and summarize the results, identify any problems, and make timely improvements.
[0034] The edges between the multiple grid slots 10 are set to be extremely narrow. These extremely narrow edges make the boundaries of each grid slot clearer and more defined, reducing errors in seed placement due to the space occupied by the edge width and preventing seeds from falling onto the edges. This allows for more accurate determination of whether all seeds have fallen into the grid slot when counting the number of seeds within it, thus improving the accuracy of sowing uniformity calculations.
[0035] like Figure 1-2 As shown;
[0036] Since the upper side of the grid plate 1 is provided with a detachable transparent plate 7, after sowing is completed, the transparent plate 7 can be placed on the grid plate 1 to block the multiple grid slots 10. At this time, the grid plate 1 can be picked up and moved indoors to test the sowing uniformity, so as to prevent the seeds in the multiple grid slots 10 from moving during the movement of the grid plate 1.
[0037] like Figure 1-2 As shown;
[0038] Since threaded posts 6 are welded on both the left and right sides of the grid plate 1, and protrusions 9 are welded on both the left and right sides of the transparent plate 7, the two protrusions 9 can be inserted into the two threaded posts 6 respectively. When the two protrusions 9 are inserted into the two threaded posts 6 respectively, the transparent plate 7 can be aligned and covered on the grid plate 1.
[0039] like Figure 1-2 As shown;
[0040] Since each of the threaded posts 6 is threaded with a nut 8 at its upper part, the nut 8 can be pressed onto the transparent plate 7 to press the transparent plate 7 onto the grid plate 1, making it easy to pick up the grid plate 1 and move it indoors.
[0041] like Figure 1-2 As shown;
[0042] Since internally threaded cylinders 5 are welded to the four lower corners of the grid plate 1, and each internally threaded cylinder 5 is threadedly connected to a screw 4, a pad 2 is welded to the lower end of the screw 4. The edge of the pad 2 is provided with multiple anti-slip grooves 3 in a ring shape. When the pad 2 is rotated, the screw 4 can be driven to rotate on the internally threaded cylinder 5, thereby driving the pad 2 and the screw 4 to rise and fall relative to the internally threaded cylinder 5. This allows the height of the four pads 2 to be adjusted, so that the grid plate 1 is horizontally supported on the ground by the four pads 2, ensuring the horizontal setting of the grid plate 1 and ensuring the accuracy of the test. The multiple anti-slip grooves 3 can increase the friction between the hand and the pad 2, making it easier to rotate the pad 2.
[0043] like Figure 1-2 As shown;
[0044] A counterweight 11 is bolted to the underside of the grid plate 1. The counterweight 11 adds weight to the grid plate 1, preventing it from becoming unstable on the ground when blown by the wind.
[0045] like Figure 1-2 As shown;
[0046] Since the transparent plate 7 is made of transparent plastic, it is easier to observe the number of seeds inside each grid plate 1 when the transparent plate 7 is covered.
Claims
1. A seed uniformity detection grid plate for a seeder, comprising a grid plate (1), characterized in that: The grid plate (1) has multiple grid slots (10) evenly distributed on it, and the multiple grid slots (10) are the same size; A detachable transparent plate (7) is provided on the upper side of the grid plate (1). The grid plate (1) is fixed with threaded posts (6) on both the left and right sides, and the transparent plate (7) is fixed with tabs (9) on both the left and right sides. The two tabs (9) can be inserted into the two threaded posts (6) respectively. Each of the threaded posts (6) has a nut (8) threadedly connected to its upper part; A counterweight (11) is fixed to the lower side of the grid plate (1).
2. The seed uniformity detection grid plate for a seeder according to claim 1, characterized in that: The mesh plate (1) has internal threaded cylinders (5) fixed at the four lower corners.
3. The seed uniformity detection grid plate for a seeder according to claim 2, characterized in that: Each of the internally threaded cylinders (5) is threaded with a screw (4).
4. The seed uniformity detection grid plate for a seeder according to claim 3, characterized in that: A pad (2) is fixed to the lower end of the screw (4).
5. A seed uniformity detection grid plate for a seeder according to claim 4, characterized in that: The edge of the pad (2) is provided with multiple anti-slip grooves (3) in a ring shape.
6. The seed uniformity detection grid plate for a seeder according to claim 5, characterized in that: The transparent plate (7) is made of transparent plastic.