Topdressing device for corn planting
The ditching assembly driven by an electric actuator and the ball hinge structure solve the problem of fertilizer spillage in corn planting in southern regions, achieve topdressing effect that adapts to different ridge heights, protect the root system of corn seedlings, and improve fertilizer utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGJIANG INST OF AGRI SCI
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-05
AI Technical Summary
Existing corn planting topdressing devices are ineffective in preventing fertilizer from spilling between rows in the rainy environment of southern regions, which affects corn growth, and they cannot adapt to the needs of planting on rows of different heights.
The ditching assembly driven by an electric actuator and a ball hinge structure ensure that fertilizer falls vertically and is buried in the soil by adjusting the distance between the ditching assembly and the corn seedlings. Combined with the design of spring steel balls and rubber tubes, it can achieve adaptive topdressing for different ridge heights.
It achieves root protection of corn seedlings and effective utilization of fertilizer in southern regions, avoiding fertilizer waste, and is suitable for planting environments with different ridge heights.
Smart Images

Figure CN224192484U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corn planting technology, specifically a topdressing device for corn planting. Background Technology
[0002] Corn is a common crop in the agricultural planting industry, with a wide planting range. It is an important food crop with high yield potential and diverse uses. When planting corn, topdressing is usually required to ensure that the corn has a good supply of nutrients, thereby ensuring the yield.
[0003] Chinese Patent Publication No. CN220858898U discloses a topdressing device for corn planting. By tilting the discharge pipe, fertilizer from the topdressing box flows into it. An extension pipe connected to the discharge pipe is used for topdressing the corn. A control valve at the top of the discharge pipe controls the amount of fertilizer flowing out. A compression spring in the clamping assembly drives a clamping plate to work with a concave support frame to clamp and fix the extension pipe. To adjust the distance between the extension pipe and the discharge pipe, simply pull the limit rod to compress the clamping plate and release it from the clamping spring, allowing the extension pipe to be pulled to adjust the distance between them.
[0004] While the aforementioned patent allows adjustment of the distance between the extended pipe and the discharge pipe to bring the fertilizer closer to the corn seedlings, it is problematic in southern regions where rainfall is high. To prevent corn seedlings from lodging due to waterlogging, ridge planting is commonly used. Since the angle between the extended pipe and the discharge pipe in the patent is fixed, the discharge pipe may directly pierce the ridge soil during movement, damaging the stability of the ridge. Replacing it with larger casters would make the device too tall, causing the fertilizer flowing from the discharge pipe to potentially bypass the corn and fall between the ridges, severely impacting corn growth. Furthermore, the height of ridges varies in different parts of southern regions, making it difficult for the aforementioned device to apply fertilizer to ridge-planted corn. Utility Model Content
[0005] The purpose of this invention is to provide a topdressing device for corn planting to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A topdressing device for corn planting includes a base plate and a storage tank. The bottom surface of the base plate is provided with three rollers arranged in a triangle. The bottom of the storage tank is provided with two symmetrical ditching components. The ditching components are connected to the interior of the storage tank. The top of the ditching components is fixedly connected to an adjusting component that is slidably connected to the base plate.
[0008] The adjustment assembly includes an electric actuator fixedly connected to the trenching assembly, and a slider that is slidably connected to the bottom plate is fixedly connected to the top end of the electric actuator.
[0009] Furthermore, the bottom plate has sliding holes through both sides of its top surface, and the slider slides inside the sliding holes at the corresponding positions.
[0010] Furthermore, the sliding hole has multiple spherical grooves evenly spaced on its two opposite sides, and the slider has cylindrical grooves on its two opposite sides. A spring steel ball that engages with the spherical groove at the corresponding position is fixedly connected inside the cylindrical groove.
[0011] Furthermore, a battery pack is fixedly connected to the top surface of the base plate, and the electric push rod is electrically connected to the battery pack.
[0012] Furthermore, the trenching component includes a fixed shell with an open bottom surface, a connector is provided between the side of the fixed shell and the fixed pipe at the corresponding position, a triangular prism is fixedly connected to one end of the fixed shell, and a scraper is fixedly connected to one end of the bottom surface of the fixed shell.
[0013] Furthermore, a three-way pipe is fixedly connected to the outlet of the storage tank, and rubber tubes are fixedly connected to both ends of the three-way pipe. A fixed tube is fixedly connected to one end of the rubber tube. The connector includes a ball hinge that penetrates and is fixed to the fixed shell at the corresponding position. A connecting tube that is slidably sleeved with the fixed tube at the corresponding position is fixedly connected to one end of the ball hinge.
[0014] Furthermore, the ball hinge has a shell structure, and both ends of the three-way pipe are inclined downwards.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. The distance between the furrowing component and the corn seedlings can be adjusted by moving the electric actuator below the base plate and by driving the electric actuator, so that the corn seedlings can fully absorb fertilizer. This not only avoids damage to the root system of the corn seedlings, but also allows for topdressing of corn planted on ridges at different heights, making the device more versatile.
[0017] 2. By sliding the ball joint, rubber tube, and connecting tube on the outside of the fixed tube, the movement and drive of the electric push rod can control the height of the fixed shell and the distance between the fixed shell and the corn seedlings. The fixed shell can make the fertilizer fall vertically, preventing the fertilizer from falling between the two rows when the fixed shell is too high, thus avoiding fertilizer waste. Attached Figure Description
[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the bottom plate of this utility model;
[0020] Figure 3 This is a schematic diagram of the storage bucket in this utility model;
[0021] Figure 4 This is a schematic diagram of the trenching component structure in this utility model;
[0022] Figure 5 This is a schematic diagram of the adjustment component structure in this utility model.
[0023] In the diagram: 1. Base plate; 11. Roller; 12. Sliding hole; 13. Battery pack; 2. Storage tank; 21. T-joint; 22. Rubber hose; 23. Fixing pipe; 3. Trenching assembly; 31. Fixing shell; 32. Triangular prism; 33. Scraper; 34. Ball hinge; 35. Connecting pipe; 4. Adjustment assembly; 41. Electric actuator; 42. Slider; 43. Spring steel ball. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1 - Figure 5 In this embodiment of the present invention, a topdressing device for corn planting includes a base plate 1 and a storage tank 2. The storage tank 2 is fixedly mounted on the top surface of the base plate 1. A stirring component is provided inside the storage tank 2. Three rollers 11 arranged in a triangle are provided on the bottom surface of the base plate 1, wherein a single roller 11 can rotate on the bottom surface of the base plate 1. Two symmetrical ditching components 3 are provided at the bottom of the storage tank 2. The ditching components 3 are connected to the inside of the storage tank 2. An adjusting component 4 is fixedly connected to the top of the ditching components 3 and slidably connected to the base plate 1. The adjusting component 4 includes an electric push rod 41 fixedly connected to the ditching components 3. A slider 42 slidably connected to the top of the electric push rod 41 is fixedly connected to the bottom plate 1.
[0026] Specifically, first, the fertilizer is poured into storage tank 2. Then, the device is moved to the corn planting area, and the fertilizer is stirred to prevent it from absorbing water and clumping. When the device is moved between two rows of corn, the two electric actuators 41 drive the two furrowing components 3 to a suitable height. Then, by moving the two electric actuators 41, the discharge port of the furrowing components 3 is brought closer to the corn seedlings. At this time, the fertilizer in storage tank 2 can be unloaded while the device is being moved, so that the fertilizer is directly sprinkled onto the corn seedlings. A trench can be dug next to the corn seedlings so that the spilled fertilizer falls into the trench and is then filled again by the trenching component 3, burying the fertilizer in the soil. This prevents the fertilizer from being washed away by rainwater. The device can be moved below the base plate 1 by the electric push rod 41, and the distance between the trenching component 3 and the corn seedlings can be adjusted by the electric push rod 41 so that the corn seedlings can fully absorb the fertilizer. This not only avoids damage to the root system of the corn seedlings, but also allows for topdressing of corn planted on ridges of different heights, making the device more versatile.
[0027] Example 1
[0028] like Figure 2 and Figure 5 As shown, in this embodiment, sliding holes 12 are provided through both sides of the top surface of the base plate 1. The slider 42 slides inside the sliding hole 12 at the corresponding position. Multiple spherical grooves are provided at equal intervals on the two opposite sides of the sliding hole 12. Cylindrical grooves are provided on the two opposite sides of the slider 42. Spring steel balls 43 that are engaged with the spherical grooves at the corresponding positions are fixedly connected in the cylindrical grooves. A battery pack 13 is fixedly connected to the top surface of the base plate 1. The electric push rod 41 is electrically connected to the battery pack 13.
[0029] In this embodiment, the slider 42 can be limited by the spring steel ball 43 engaging with the hemispherical groove at the corresponding position, so that the fertilizer can be more accurately sprinkled on the corn seedlings. The battery pack 13 provides power to the electric push rod 41, so that the electric push rod 41 can be driven to adjust the height of the furrowing component 3 according to the height of the ridge.
[0030] Example 2
[0031] like Figure 3 and Figure 4As shown, in this embodiment, the trenching component 3 includes a fixed shell 31 with an open bottom surface. A connector is provided between the side of the fixed shell 31 and the fixed tube 23 at the corresponding position. A triangular prism 32 is fixedly connected to one end of the fixed shell 31, and a scraper 33 is fixedly connected to one end of the bottom surface of the fixed shell 31. A three-way pipe 21 is fixedly connected to the outlet of the storage tank 2. Rubber tubes 22 are fixedly connected to both ends of the three-way pipe 21. A fixed tube 23 is fixedly connected to one end of the rubber tube 22. The connector includes a ball hinge 34 that penetrates and is fixed to the fixed shell 31 at the corresponding position. A connecting tube 35 that is slidably sleeved with the fixed tube 23 at the corresponding position is fixedly connected to one end of the ball hinge 34. The ball hinge 34 is a shell structure, and the two ends of the three-way pipe 21 are inclined downwards.
[0032] In this embodiment, a control valve is first installed on the outside of the fixed pipe 23 to control the unloading of fertilizer. The electric push rod 41 drives the triangular prism 32 into the soil. As the device moves, it can create a trench in the soil, allowing the spilled fertilizer to fall into the trench. Then, the scraper 33 fills the trench with soil from the side of the trench, burying the fertilizer in the trench to prevent it from being washed away by rainwater. The ball hinge 34, rubber tube 22, and connecting pipe 35 slide on the outside of the fixed pipe 23, allowing the electric push rod 41 to move and drive, controlling the height of the fixed shell 31 and the distance between the fixed shell 31 and the corn seedlings. The fixed shell 31 allows the fertilizer to fall vertically, preventing the fertilizer from falling between the rows when the fixed shell 31 is too high, thus avoiding fertilizer waste.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A topdressing device for corn planting, comprising a base plate (1) and a storage tank (2), wherein the bottom surface of the base plate (1) is provided with three rollers (11) arranged in a triangular pattern, characterized in that, The bottom of the storage tank (2) is provided with two symmetrical trenching components (3), which are connected to the interior of the storage tank (2). The top of the trenching component (3) is fixedly connected to an adjustment component (4) that is slidably connected to the bottom plate (1). The adjustment assembly (4) includes an electric push rod (41) fixedly connected to the trenching assembly (3), and a slider (42) fixedly connected to the top of the electric push rod (41) and slidably connected to the base plate (1).
2. The topdressing device for corn planting according to claim 1, characterized in that, The top surface of the base plate (1) has sliding holes (12) on both sides, and the slider (42) slides inside the sliding holes (12) at the corresponding positions.
3. The topdressing device for corn planting according to claim 2, characterized in that, Multiple spherical grooves are equally spaced on the two opposite sides of the sliding hole (12), and cylindrical grooves are opened on the two opposite sides of the slider (42). Spring steel balls (43) that are engaged with the spherical grooves at the corresponding positions are fixedly connected in the cylindrical grooves.
4. The topdressing device for corn planting according to claim 3, characterized in that, A battery pack (13) is fixedly connected to the top surface of the base plate (1), and the electric push rod (41) is electrically connected to the battery pack (13).
5. The topdressing device for corn planting according to claim 1, characterized in that, The trenching component (3) includes a fixed shell (31) with an open bottom surface. A connector is provided between the side of the fixed shell (31) and the fixed tube (23) at the corresponding position. A triangular prism (32) is fixedly connected to one end of the fixed shell (31), and a scraper (33) is fixedly connected to one end of the bottom surface of the fixed shell (31).
6. The topdressing device for corn planting according to claim 5, characterized in that, A three-way pipe (21) is fixedly connected to the outlet of the storage tank (2). Both ends of the three-way pipe (21) are fixedly connected to rubber tubes (22). One end of the rubber tube (22) is fixedly connected to a fixed pipe (23). The connecting parts include a ball hinge (34) that is fixed through the fixed shell (31) at the corresponding position. One end of the ball hinge (34) is fixedly connected to a connecting pipe (35) that is slidably sleeved with the fixed pipe (23) at the corresponding position.
7. The topdressing device for corn planting according to claim 6, characterized in that, The ball hinge (34) is a shell structure, and the two ends of the tee pipe (21) are inclined downward.
Citation Information
Patent Citations
Topdressing device for corn planting
CN220858898U