Fertilizer distributor for corn planting
By incorporating a reciprocating sliding mechanism of a pusher rod and a drive block into the topdressing machine, combined with a plow blade structure, the problem of inaccurate fertilizer application in existing technologies is solved. This enables centralized application and precise control of fertilizer quantity, improving fertilization efficiency and equipment flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LAIYANG AGRI TECH PROMOTION CENT (LAIYANG RURAL SCI & TECH EDUCATION & TRAINING CENT LAIYANG FRUIT TREE TECH GUIDANCE STATION SHANDONG AGRI RADIO & TELEVISION SCHOOL LAIYANG BRANCH)
- Filing Date
- 2025-10-31
- Publication Date
- 2026-08-04
AI Technical Summary
Existing small-scale topdressing machines are difficult to use in corn planting to achieve centralized and precise fertilizer application and control, resulting in fertilizers being difficult to apply accurately to corn seedlings and the application rate being difficult to adjust.
A topdressing machine was designed, which realizes the intermittent delivery and precise control of fertilizer by setting a push rod and a drive block reciprocating sliding mechanism in the feeding pipe, combined with a moving wheel drive transmission mechanism, and is equipped with a plow structure for trenching and fertilization.
It enables centralized and precise fertilizer application, improving fertilization efficiency, avoiding fertilizer waste and localized deficiencies, and the equipment is compact, flexible, and unlikely to damage plants.
Smart Images

Figure CN224583822U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural machinery and equipment technology, specifically a top dressing machine suitable for corn planting. Background Technology
[0002] Corn is an important food, feed, and cash crop in my country and worldwide. Throughout its growth cycle, in addition to the base fertilizer at sowing, topdressing during key growth periods is crucial for replenishing soil nutrients, promoting robust plant growth, increasing the number of kernels per ear and the thousand-kernel weight, and ultimately improving yield. Common small topdressing machines are towed or suspended by small tractors or walking tractors. These machines typically use plow-type or disc-type furrow openers to create furrows between corn rows, apply fertilizer into the furrows using external trough wheel or spiral fertilizer applicators, and are equipped with soil covering devices to complete the operation.
[0003] However, corn planting conditions, planting density, and fertilizer requirements may vary depending on the environmental soil conditions of different regions. Existing small-scale topdressing equipment often applies fertilizer continuously, which makes it difficult to concentrate the fertilizer at the corn seedling planting location and control the amount of fertilizer applied.
[0004] There is a need for equipment for topdressing corn to achieve more concentrated fertilization and more precise application of fertilizer. Utility Model Content
[0005] Therefore, it is necessary to provide a fertilizer topdressing machine suitable for corn planting. By connecting a feeding pipe to the bottom of the hopper and installing a movable push rod inside the feeding pipe, the operator can control the reciprocating sliding frequency of the push rod to achieve intermittent application of fertilizer and control the amount of fertilizer applied.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0007] A topdressing machine suitable for corn planting includes: a machine body, a hopper mounted on the machine body, a fertilizer application structure between the machine body and the hopper, the fertilizer application structure including a feeding pipe, a feeding pipe fixedly connected to the bottom end of the hopper, a push rod slidably connected to the inner side of the feeding pipe, a drive block fixedly connected to the side of the push rod, the drive block being located on the outer side of the feeding pipe, the drive block being slidably connected to the machine body, a first spring fixedly connected between the drive block and the machine body, and a soil-breaking structure at the end of the machine body.
[0008] Optionally, in one embodiment of the present invention, a contact slide rod is slidably connected to the side of the drive block, and a threaded tube is rotatably connected to the middle of the drive block, with the threaded tube and the contact slide rod being threadedly connected.
[0009] Optionally, in one embodiment of the present invention, an adjusting rod is rotatably connected to the top side of the machine body, and the bottom end of the adjusting rod is slidably connected to the inner side of the threaded tube.
[0010] Optionally, in one embodiment of the present invention, a rotating rod is rotatably connected to the side of the body, and the end of the rotating rod abuts against the side of the sliding rod.
[0011] Optionally, in one embodiment of the present invention, a transmission gear is fixedly connected to the end of the rotating rod, a gear shaft meshes with the side of the transmission gear, the gear shaft is rotatably connected to the machine body, and the end of the gear shaft close to the transmission gear is a gear structure with the same diameter as the transmission gear.
[0012] Optionally, in one embodiment of the present invention, a movable wheel is rotatably connected to the middle of the machine body, and a bevel gear is fixedly connected to the middle of the movable wheel. The end of the gear shaft that is close to the movable wheel meshes with the bevel gear.
[0013] Optionally, in one embodiment of the present invention, the soil-breaking structure includes a plow blade, the plow blade is rotatably connected to the bottom side of the machine body, and a torsion spring is fixedly connected between the plow blade and the machine body.
[0014] Optionally, in one embodiment of the present invention, the side of the plow blade abuts against the machine body, a locking block is slidably connected to the top side of the machine body, and a second spring is fixedly connected between the locking block and the machine body.
[0015] Optionally, in one embodiment of the present invention, the end of the locking block abuts against both sides of the plow blade, and positioning grooves are respectively provided on both sides of the plow blade.
[0016] Compared with the prior art, the topdressing machine for corn planting provided by this utility model has the following characteristics:
[0017] When the machine moves in the field, the fertilizer in the hopper enters the feed pipe located at the bottom. Inside the vertical part of the feed pipe, there is a sliding push rod. When the drive block slides back and forth, the push rod moves synchronously with the drive block, pushing the fertilizer in the vertical part of the feed pipe towards the bottom end, thus achieving intermittent fertilizer application. In conjunction with the planting density of corn seedlings, the fertilizer is concentrated at the planting location of the corn seedlings. On the other hand, by controlling the sliding distance of the drive block, the amount of fertilizer applied each time can be controlled. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;
[0020] Figure 2 This is a schematic diagram of the connection structure between the machine body and the hopper in Embodiment 1 of this utility model;
[0021] Figure 3 for Figure 2 The diagram shows an enlarged view of the structure of region A.
[0022] Figure 4 for Figure 2 The diagram shows an enlarged view of the structure of region B.
[0023] Figure 5 This is a schematic diagram of the connection structure between the body and the contact slide bar in Embodiment 1 of this utility model;
[0024] Figure 6 This is a schematic diagram of the connection structure between the locking block and the plow blade of this utility model:
[0025] Reference numerals in the attached drawings: 1. Body; 2. Fertilizer application structure; 201. Adjusting rod; 202. Transmission gear; 203. Moving wheel; 204. Gear shaft; 205. Bevel gear; 206. Rotating rod; 207. Feeding pipe; 208. Pushing rod; 209. Drive block; 210. Threaded pipe; 211. First spring; 212. Abutment slide bar; 3. Soil breaking structure; 301. Plow blade; 302. Locking block; 303. Torsion spring; 304. Positioning groove; 305. Second spring; 4. Hopper. Detailed Implementation
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.
[0027] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0028] Because existing fertilizer applicators are insufficient in terms of application accuracy and dosage control, a topdressing fertilizer applicator with better control was designed. The specific solution is as follows:
[0029] Example 1
[0030] like Figure 1-6 As shown, a topdressing machine suitable for corn planting includes a body 1, a hopper 4 installed on the body 1, a fertilizer application structure 2 between the body 1 and the hopper 4, the fertilizer application structure 2 including a feeding pipe 207, the bottom end of the hopper 4 is fixedly connected to the feeding pipe 207, the inner side of the feeding pipe 207 is slidably connected to a push rod 208, the side of the push rod 208 is fixedly connected to a drive block 209, the drive block 209 is located on the outer side of the feeding pipe 207, the drive block 209 is slidably connected to the body 1, a first spring 211 is fixedly connected between the drive block 209 and the body 1, and the end of the body 1 is provided with a soil breaking structure 3.
[0031] A sliding contact rod 212 is slidably connected to the side of the drive block 209. A threaded tube 210 is rotatably connected to the middle of the drive block 209. The threaded tube 210 is threadedly connected to the sliding contact rod 212. An adjusting rod 201 is rotatably connected to the top side of the machine body 1. The bottom end of the adjusting rod 201 is slidably connected to the inside of the threaded tube 210. A rotating rod 206 is rotatably connected to the side of the machine body 1. The end of the rotating rod 206 abuts against the side of the sliding contact rod 212. A transmission gear 202 is fixedly connected to the end of the rotating rod 206. A gear shaft 204 is engaged on the side and is rotatably connected to the machine body 1. The end of the gear shaft 204 near the transmission gear 202 has a gear structure with the same diameter as the transmission gear 202. A movable wheel 203 is rotatably connected to the middle of the machine body 1, and a bevel gear 205 is fixedly connected to the middle of the movable wheel 203. The end of the gear shaft 204 near the movable wheel 203 meshes with the bevel gear 205. The movable wheel 203 is located on the front side of the machine body 1. When the machine body 1 moves by external traction, the movable wheel 203 rotates. The moving wheel 203 drives the gear shaft 204 to rotate via the central bevel gear 205. The gear shaft 204 further drives the rotating rod 206 to rotate via the transmission gear 202. As the rotating rod 206 rotates, its end periodically pushes the abutment slide bar 212 on the side of the drive block 209, thereby causing the push rod 208 to slide inside the feed tube 207. At this time, due to the blockage of the push rod 208, the feed tube 207 stops feeding. When the rotating rod 206 rotates to the top, the drive block... As 209 rises, push rod 208 slides synchronously to the top. When push rod 208 is no longer blocked, fertilizer in hopper 4 can be discharged in small amounts through discharge pipe 207, thus realizing the periodic feeding of fertilizer. At the same time, the position of the contact slide 212 on the side of drive block 209 can be adjusted. After the position of contact slide 212 is changed, the pushing distance of the rotating rod 206 on contact slide 212 during rotation will change, thereby changing the blocking of discharge pipe 207 by push rod 208 and controlling the amount of fertilizer fed.
[0032] The soil-breaking structure 3 includes a plow blade 301. The plow blade 301 is rotatably connected to the bottom side of the body 1. A torsion spring 303 is fixedly connected between the plow blade 301 and the body 1. The side of the plow blade 301 abuts against the body 1. A locking block 302 is slidably connected to the top side of the body 1. A second spring 305 is fixedly connected between the locking block 302 and the body 1. The end of the locking block 302 abuts against both sides of the plow blade 301. Positioning grooves 304 are respectively opened on both sides of the plow blade 301. A plow for breaking up the soil is set on the bottom side of the body 1. When the machine body 1 moves, the plow blade 301, which extends deep into the soil, will push the soil to both sides, making it easier for the subsequent feeding pipe 207 to put fertilizer into the soil. When the equipment is moved, the plow blade 301 can be rotated to a horizontal position for storage, which facilitates the movement of the equipment. At the same time, positioning grooves 304 are provided on both sides of the plow blade 301. When the plow blade 301 is rotated to a horizontal position, the end of the locking block 302 will automatically engage with the positioning groove 304, thus fixing the horizontal position of the plow blade 301.
[0033] Equipment working principle:
[0034] First, the fertilizer to be applied is put into the hopper 4. When the machine body 1 moves in the field, the fertilizer in the hopper 4 will enter the feed pipe 207. The vertical part of the feed pipe 207 is equipped with a push rod 208. When the drive block 209 slides back and forth, the push rod 208 moves synchronously with the drive block 209 and pushes the fertilizer in the vertical part of the feed pipe 207 towards the bottom end, so as to realize the intermittent application of fertilizer. In combination with the planting density of corn seedlings, the fertilizer is concentrated at the planting position of corn seedlings.
[0035] In terms of control, the amount of fertilizer applied each time can be controlled by controlling the sliding distance of the drive block 209. A moving wheel 203 is provided on the front side of the machine body 1. When the machine body 1 moves by external traction, the rotation of the moving wheel 203 drives the gear shaft 204 to rotate via the central bevel gear 205. The gear shaft 204 drives the rotating rod 206 to rotate via the transmission gear 202. The end of the rotating rod 206 periodically pushes the sliding rod 212, causing the push rod 208 to slide inside the feeding pipe 207. At this time, due to the blockage of the push rod 208, the feeding pipe 207 stops discharging fertilizer. When the rotating rod 206 rotates to the top, the drive block 209 rises, and the push rod 208... When the push rod 208 slides synchronously to the top side and is no longer blocked, the fertilizer in the hopper 4 can be discharged in small amounts through the discharge pipe 207, realizing the periodic delivery of fertilizer. At the same time, the position of the contact slide rod 212 on the side of the drive block 209 can be adjusted. After the position of the contact slide rod 212 changes, the rotation rod 206 rotates and changes the pushing distance of the contact slide rod 212, thereby adjusting the stroke of the push rod 208 blocking the discharge pipe 207 and controlling the amount of fertilizer delivered. The bottom side of the machine body 1 is provided with a plow blade 301 to break up the soil. When the machine body 1 moves, the plow blade 301, which penetrates into the soil, will push the soil to both sides, making it easier for the discharge pipe 207 to deliver fertilizer into the soil.
[0036] When moving the equipment, the plow blade 301 can be rotated to a horizontal position for storage, facilitating the movement of the equipment. At the same time, positioning grooves 304 are provided on both sides of the plow blade 301. When the plow blade 301 is rotated to a horizontal position, the end of the locking block 302 will automatically engage with the positioning groove 304, thereby fixing the horizontal position of the plow blade 301.
[0037] The topdressing machine in this solution uses a moving wheel drive transmission mechanism to push the push rod to reciprocate, thereby achieving automatic operation, improving the efficiency of fertilization, and avoiding fertilizer waste or partial deficiencies.
[0038] By adjusting the position of the resisting slide bar on the drive block, the stroke of the rotating rod pushing the drive block and the push rod is changed, thereby adjusting the amount of fertilizer applied in a single operation.
[0039] The entire drive mechanism consists of mechanical parts and requires no additional batteries or motors.
[0040] The plow blade can cut into and separate the soil, forming clear grooves for more precise fertilizer application. Furthermore, the plow blade can be quickly stored and secured without additional tools, making it convenient for mobile devices.
[0041] The equipment is compact and flexible, making it easy to operate between rows of corn plants without damaging them.
[0042] Example 2
[0043] In this embodiment, the structure of the topdressing machine is basically the same as that in embodiment 1. The difference is that a stirring rod is provided in the hopper 4. The top of the stirring rod is the transmission end. A transmission rod is connected to the transmission end in the radial direction of the hopper 4. A handwheel is connected to the end of the transmission rod located outside the hopper 4. When the equipment is moving, if there are clumps of fertilizer, the stirring rod can be driven by rotating the handwheel to stir the fertilizer inside and break up the clumps.
[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. Topdressing machines suitable for corn planting, including: The machine body, on which a hopper is installed, is characterized in that: a fertilizer application structure is provided between the machine body and the hopper, the fertilizer application structure includes a feeding pipe, the feeding pipe is fixedly connected to the bottom end of the hopper, a push rod is slidably connected to the inner side of the feeding pipe, a drive block is fixedly connected to the side of the push rod, the drive block is located on the outer side of the feeding pipe, the drive block is slidably connected to the machine body, a first spring is fixedly connected between the drive block and the machine body, and a soil breaking structure is provided at the end of the machine body.
2. The topdressing machine for corn planting according to claim 1, characterized in that: The drive block has a sliding contact rod slidably connected to its side, and a threaded tube is rotatably connected to the middle of the drive block. The threaded tube and the sliding contact rod are threadedly connected.
3. The topdressing machine for corn planting according to claim 2, characterized in that: An adjusting rod is rotatably connected to the top side of the machine body, and the bottom end of the adjusting rod is slidably connected to the inside of the threaded tube.
4. The topdressing machine for corn planting according to claim 2, characterized in that: A rotating rod is rotatably connected to the side of the body, and the end of the rotating rod abuts against the side of the sliding rod.
5. The topdressing machine for corn planting according to claim 4, characterized in that: The end of the rotating rod is fixedly connected to a transmission gear, and a gear shaft meshes with the side of the transmission gear. The gear shaft is rotatably connected to the machine body, and the end of the gear shaft that is close to the transmission gear is a gear structure with the same diameter as the transmission gear.
6. The topdressing machine for corn planting according to claim 5, characterized in that: A movable wheel is rotatably connected to the middle of the machine body, and a bevel gear is fixedly connected to the middle of the movable wheel. The end of the gear shaft that is close to the movable wheel meshes with the bevel gear.
7. The topdressing machine for corn planting according to claim 1, characterized in that: The soil-breaking structure includes a plow blade, which is rotatably connected to the bottom side of the machine body, and a torsion spring is fixedly connected between the plow blade and the machine body.
8. The topdressing machine for corn planting according to claim 7, characterized in that: The side of the plow blade abuts against the machine body, and a locking block is slidably connected to the top side of the machine body. A second spring is fixedly connected between the locking block and the machine body.
9. The topdressing machine for corn planting according to claim 8, characterized in that: The end of the locking block abuts against both sides of the plow blade, and positioning grooves are respectively opened on both sides of the plow blade.