A no-tillage finger clamp type precision fertilization and seeding machine

Abstract

The application discloses a no-tillage finger clamp type precision fertilizing and seeding machine and belongs to the technical field of agricultural machines. The seeding machine comprises a frame, a traction mechanism, a fertilizing mechanism, a seeding mechanism, a land wheel and a transmission mechanism. The core technical scheme is that the fertilizing opener of the fertilizing mechanism is a notch disc type, and the depth is adjustable and the side position is adjustable through a depth adjusting bin and a U-shaped clamp installation; the seeding mechanism is connected with the frame through a parallel four-bar linkage profiling mechanism, and a V-shaped hollow rubber roller is arranged at the rear; a straw cleaning mechanism composed of a grass turning wheel and a stubble removing disc is arranged at the front end of the machine. Through optimization of the combination and adjustment mode of the key mechanical structure, the application effectively solves the blockage problem under high straw coverage, realizes stable and adjustable seeding and fertilizing depth, good profiling effect and high operation reliability, and significantly improves the quality of no-tillage seeding operation.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a no-till seeding machine suitable for conservation tillage, specifically a no-till finger-clamp precision fertilization seeder capable of completing the processes of side-deep fertilization, seedbed cleaning, precision seeding, and soil covering and compaction in one operation. Background Technology

[0002] Conservation tillage is an important direction for sustainable agricultural development today. It requires direct sowing on surfaces covered with a large amount of previous crop straw to reduce soil erosion and conserve water. No-till fertilizer seeders are key equipment for realizing this technology. Their mechanical structure's anti-clogging ability, soil penetration performance, operating accuracy, and reliability directly determine the sowing quality and operating efficiency.

[0003] Currently, existing no-till planters on the market typically consist of a frame, traction device, disc furrow opener, seed and fertilizer metering mechanism, and transmission system. However, in practical applications, it has been found that the mechanical structure of existing equipment still has many defects: First, its straw clearing mechanism is simply designed, mostly a single disc or straw-removing wheel, which is ineffective under high-intensity straw mulch conditions, easily leading to straw entanglement and blockage, affecting the continuity of sowing; Second, the seed metering device mostly adopts a traditional structure, which vibrates greatly under high-speed operation, easily causing double-seeding or missed sowing, making it difficult to guarantee the uniformity of sowing; Third, the fertilizer furrow opener has insufficient soil penetration and stability, making it difficult to guarantee the consistency of fertilizer application depth and seed-fertilizer spacing, easily causing seed and seedling burn; In addition, the overall contour-following structure design is unreasonable, making it difficult to adapt to uneven no-till surfaces, resulting in uneven sowing depth; Finally, its transmission system layout is often relatively complex, chain tension adjustment is inconvenient, maintenance is difficult, and it affects the reliability of operation.

[0004] Comprehensive analysis reveals significant shortcomings in the mechanical structure of existing no-till planters, particularly in their maneuverability under high straw cover conditions, the operational precision and stability of key components, and adaptability to complex terrain. Therefore, there is an urgent need to optimize the overall mechanical structure of no-till planters, providing a purely mechanical solution with strong anti-clogging capabilities, high seeding and fertilization precision, good contour-following effect, structural stability, and convenient adjustment, thereby improving their operational quality and reliability under harsh working conditions. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing no-till seeders' mechanical structure by providing a no-till finger-clamp precision fertilization seeder. This invention aims to solve purely mechanical structural problems such as easy clogging under high-intensity straw mulch conditions, uneven sowing and fertilization depth, poor contour-following effect, and low overall reliability by optimizing the structure and layout of key components. Specifically, the purpose of this invention is:

[0006] 1. Provide a mechanical solution with strong anti-clogging ability and effective cleaning of straw in seedbeds, ensuring the machine's passability and continuous operation on surfaces fully covered by straw.

[0007] 2. Provides a mechanical structure that provides stable, adjustable, and highly consistent sowing and fertilization depths, avoiding missed sowing, double sowing, and seed and seedling burn, thereby improving the quality of operations.

[0008] 3. Provide a mechanical contouring mechanism with good contouring effect and adaptability to undulating terrain, ensuring that each sowing unit independently follows the terrain undulations and maintains uniform sowing depth.

[0009] 4. Provide a purely mechanical seeder that is compact in structure, easy to adjust, reliable in operation, and easy to maintain, thereby reducing the failure rate and operating costs.

[0010] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0011] A no-till finger-clamp precision fertilizer seeder includes a frame, a traction beam, a fertilizing mechanism, a seeding mechanism, ground wheels, and a transmission mechanism. Its improvements mainly lie in the optimization and innovative combination of key mechanical structures:

[0012] The fertilization mechanism employs a notched disc-type fertilizer furrow opener. This furrow opener is mounted on the frame via a depth adjustment magazine and a U-shaped clamp, allowing for vertical adjustment of the furrow depth and precise adjustment of its lateral distance (7-12 cm) from the seeds by loosening the U-shaped clamp and moving it left and right. The notched disc forms an acute angle of approximately 6 degrees with the direction of travel. This structure ensures good soil penetration and straw cutting performance while reducing tillage resistance. Furthermore, a soil-squeezing blade is located inside the notched disc, and its relative position to the disc can be precisely adjusted using three adjusting bolts, collectively completing the furrowing, fertilizer application, and soil covering operations.

[0013] The sowing mechanism is connected to the main beam of the frame via a parallel four-bar linkage. This four-bar linkage allows each sowing unit to swing independently up and down around the hinge point of the main beam, thus perfectly conforming to the uneven ground and maintaining a consistent sowing depth. A sowing depth adjustment mechanism is provided between the four-bar linkage and the sowing furrow opener. This mechanism includes a sowing depth adjustment handle and a toothed plate with multi-stage positioning grooves. By simply pushing the handle, the sowing depth can be precisely set in 0.5 cm increments within a range of 3-10 cm.

[0014] The end of the sowing mechanism is equipped with a V-shaped hollow rubber wheel soil compactor. The two compactor wheels, arranged in a V-shape, compress and compact the soil on both sides of the seed furrow, achieving good results and preventing soil adhesion. The compactor wheels are mounted on a support via an eccentric sleeve, and the angle of the eccentric sleeve can be changed by a pressing adjustment handle, thus steplessly adjusting the compaction intensity (350-850 g / cm²) to adapt to different soil moisture conditions.

[0015] The seeder is equipped with a seedbed straw cleaning mechanism at its front end, which consists of a straw-removing wheel and a soil-loosening and stubble-removing disc. The straw-removing wheel is responsible for separating the surface straw and weeds to both sides, and the stubble-removing disc then cuts into the soil to loosen the stubble and further clean the seedbed. The height of the straw-removing wheel can be adjusted by a cam disc mechanism. Pressing the spring pin and rotating the disc changes its penetration depth, ensuring a clean seedbed can be formed under various straw coverage levels.

[0016] Furthermore, the transmission mechanism is a symmetrically arranged dual-transmission structure. By adjusting the lead screw and tension spring, the transmission rubber wheel is pressed tightly onto the ground tire surface, ensuring smooth and reliable transmission, and the friction force is adjustable.

[0017] Furthermore, the seed cleaning brush of the finger clamp seed metering device is equipped with a ten-level adjustment mechanism, which can precisely adjust the distance between the brush and the finger clamp using a special wrench, thereby controlling the replanting rate and the missed seeding rate.

[0018] Compared with existing technologies, the no-till finger-clamp precision fertilizer seeder provided by this invention has the following significant advantages:

[0019] 1. Excellent anti-clogging performance and superb passability: Through the combined cleaning mechanism of the straw-removing wheel and the stubble-removing disc, as well as the ditch opener with a notch and sharp angle, it can efficiently cut, separate and clean straw, completely solving the clogging problem under high-intensity straw coverage, and ensuring the continuity and efficiency of operation.

[0020] 2. High operational precision and excellent sowing quality: The parallel four-bar linkage contouring mechanism ensures independent contouring for each individual seed, resulting in uniform and stable sowing depth. Adjustable sowing depth mechanism, fertilization depth and lateral position adjustment mechanism, and seed metering brush fine adjustment mechanism work together to ensure precise single-seed sowing and accurate lateral fertilization, effectively avoiding problems such as missed sowing, double sowing, and seedling burn.

[0021] 3. Reasonable structural design, strong adaptability and reliability: The entire structure is mechanical, robust, and has a low failure rate. The V-shaped hollow rubber compaction wheel provides excellent soil compaction and prevents soil adhesion. All adjustment mechanisms (such as sowing depth, compaction pressure, straw clearing height, and transmission friction) are intuitively designed and easy to operate, enabling the machine to widely adapt to the agronomic requirements of different regions and soil moisture conditions.

[0022] 4. Convenient Maintenance: Adopting a modular design, each functional component is relatively independent. For example, the seed metering device has a quick-release clutch, allowing for individual inspection or cleaning; the fertilizer tank has a fertilizer outlet at the bottom for quick removal of excess fertilizer; and the drive chain tensioner is easy to adjust and maintain. These features significantly reduce the difficulty and time cost of daily maintenance for users. Attached Figure Description

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These drawings are schematic diagrams used to clearly illustrate the structure, connection relationships, and working principle of the present invention, and should not be construed as limiting the actual shape, size, or proportion of the product.

[0024] Figure 1 This is a side view of the overall structure of the no-till finger-clamp precision fertilizer planter according to an embodiment of the present invention;

[0025] Figure 2 This is a front view schematic diagram of the overall structure of the no-till finger-clamp precision fertilizer seeder;

[0026] Figure 3 This is a schematic diagram of a no-till finger-clamp precision fertilizer planter in operation in the field.

[0027] Figure 4 This is a structural schematic diagram of the traction beam lifter;

[0028] Figure 5 This is a schematic diagram of the structure of the fertilizer applicator and its adjustment mechanism;

[0029] Figure 6 This is a schematic diagram of the sowing depth adjustment mechanism;

[0030] Figure 7 This is a partial schematic diagram of the seed cleaning brush adjustment mechanism of the seed metering device;

[0031] Figure 8 This is a schematic diagram of the ballast and its pressure regulating mechanism;

[0032] Figure 9 This is a schematic diagram of the height adjustment mechanism for the grass-removing wheel;

[0033] Figure 10 This is a schematic diagram of the transmission mechanism;

[0034] Figure 11 This is a partial schematic diagram of the top screw structure of the ground wheel hub;

[0035] Figure 12 This is a partial schematic diagram of the fertilizer container's fertilizer outlet cover structure. Detailed Implementation

[0036] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the drawings are schematic diagrams used to clearly illustrate the structure and principle of the present invention and should not be construed as limiting the actual shape or size of the product. This description is intended to enable those skilled in the art to understand and reproduce the present invention.

[0037] Please see Figures 1-3 This is a typical embodiment of the no-till finger-clamp precision fertilizer seeder of the present invention, which mainly includes a frame 100, a traction beam 200, a fertilization mechanism 300, a seeding mechanism 400, a ground wheel 500, a transmission mechanism 600, a contour pressing mechanism 700, and a seedbed straw cleaning mechanism 800.

[0038] The frame 100, serving as the load-bearing foundation of the entire seeder, is welded together from the main beam 120, the blade holder crossbeam 110, and the fertilizer box support 130. The main beam 120 uses rectangular steel tubing to ensure overall rigidity and torsional resistance. The traction beam 200 is connected to the front end of the frame 100 via a hinge point, and its front end is equipped with a traction hook 210 for engaging with the tractor's traction device. A traction beam lifter 900 is also installed on the traction beam 200. Figure 4 As shown, the lifting device includes a support bushing 910 welded to the traction beam 200, a screw mechanism 930 with a handle 920, and a locking wave pin 940. The function of the traction beam lifting device 900 is to adjust the height of the traction beam 200 when the tractor is attached to the seeder. The positioning bushing on the traction beam lifting device 900 is inserted into the support bushing 910 on the traction beam 200, the locking pin 950 is installed, and the wave pin 940 is used to lock it in place. Depending on the height of the tractor's towing hook, rotating the handle 920 drives the screw to rotate, thereby raising or lowering the entire traction beam 200 and its towing hook 210, facilitating attachment to tractors of different heights. After attachment, the lifting device can be rotated 90 degrees to a standby position to avoid interference during operation.

[0039] like Figure 5As shown, the fertilization mechanism 300 is key to achieving precise lateral fertilization. Its core component is a fertilization furrow opener, which uses a large-diameter notched disc 341. This notched disc 341 is connected to a depth adjustment chamber 344 via a support arm 342, and the depth adjustment chamber 344 is clamped and fixed to the blade holder beam 110 by a U-shaped clip 343. This installation method gives the entire fertilization furrow opener 340 two-dimensional adjustability: First, by loosening the nut on the U-shaped clip 343, the entire depth adjustment chamber 344 can be moved left and right, thereby adjusting the lateral distance between the notched disc 341 and the seeding furrow opener, achieving precise adjustment of the lateral distance between the seed and fertilizer (7-12 cm); Second, by loosening the three set screws 345 on the depth adjustment chamber 344, the support arm 342 can be moved up and down, thereby adjusting the soil penetration depth of the notched disc 341, achieving adjustment of the fertilization depth (5-8 cm after planting). To ensure smooth trenching and minimal soil movement, the surface of the notched disc 341 forms an acute angle (i.e., the opening angle) of approximately 6 degrees with the machine's forward direction. This angle is also maintained by adjusting and re-locking the three set screws 345 on the depth adjustment magazine 344. Inside the notched disc 341, a fertilizer squeezing blade 346 is also provided. This blade 346 is mounted on a separate bracket via three adjusting bolts. By tightening the upper and rear bolts respectively, the relative position of the squeezing blade 346 and the notched disc 341 can be finely adjusted, ensuring that its front part is in slight contact with the disc and its rear side is slightly higher than the fertilizer inlet, thus completing trenching, fertilizer delivery, and partial soil covering, preventing fertilizer volatilization and trench wall collapse. The fertilizer in the fertilizer tank 310 is introduced into the trencher through the double auger fertilizer dispenser 320 and the rubber fertilizer delivery pipe 330.

[0040] The sowing mechanism 400 is connected to the main beam 120 of the frame 100 via a parallel four-bar linkage 450. This four-bar linkage consists of a pair of upper links and a pair of lower links forming a parallelogram frame that can swing back and forth and up and down. The sowing furrow opener, finger-clamp seed metering device, and soil covering and compacting device 700 are all mounted on this frame. This design allows each sowing unit to independently adapt to the undulations of the ground, always maintaining a consistent relative angle and height between the sowing furrow opener 440 and the ground, thus ensuring uniform sowing depth. Figure 6As shown, a seeding depth adjustment mechanism is located at the rear of the four-bar linkage. This mechanism includes a seeding depth adjustment toothed plate 442 hinged to the frame and a seeding depth adjustment handle 441 connected to the seeding unit. The toothed plate 442 has multiple positioning slots. When adjusting the seeding depth, lifting the handle 441 upwards disengages it from the current toothed slot; pushing the handle 441 forward raises the entire seeding unit around its hinge point, resulting in a shallower seeding depth; pulling the handle 441 backwards lowers the unit, increasing the seeding depth. After adjustment, releasing the handle 441 causes its lower lug 443 to automatically engage in the corresponding toothed slot under spring action, completing the positioning. The adjustment range is 30-100 mm, with 15 levels, each level being 5 mm. Figure 7 As shown, the finger-clamp seed metering device 420 is made of metal and contains key components such as a metal housing 421, a finger clamp plate 422, a seed cleaning brush 423, a seed guide belt, and a clutch mechanism. The distance between the seed cleaning brush 423 and the finger clamp 426 directly affects the seed metering accuracy. Therefore, a ten-position adjustment mechanism is provided on the side of the seed metering device housing 421. Fine adjustment can be made by inserting a dedicated hexagonal wrench 428 into the adjustment hole and rotating it: clockwise rotation moves the brush 423 closer to the finger clamp 426, effectively removing excess seeds and reducing the reseeding rate; counterclockwise rotation moves the brush 423 away from the finger clamp 426, reducing interference with the seeds and reducing the missed seeding rate. It is usually preset to the third position at the factory. The adjustment position can be visually displayed via the position icon 425. The finger-clamp seed metering device 420 can also be equipped with a shock-absorbing device 427 to dampen the seed metering shaft 424. The seed metering device is also equipped with a clutch mechanism. By rotating a clutch tooth upwards, the tooth can be separated from the protrusion on the drive sprocket, thereby cutting off the seeding power of the unit and facilitating the maintenance, cleaning or transportation of individual units.

[0041] like Figure 8The diagram shows the pressure adjustment mechanism of the compactor. The contour compaction mechanism 700 is located at the rear end of the sowing mechanism and mainly includes a pair of V-shaped hollow rubber compaction wheels 710, a compaction wheel support 720, and a pressure adjustment mechanism 730. The two compaction wheels 710 are arranged at a V-angle, which can efficiently compress and cover the soil on both sides of the seed furrow. The soil coverage is tight, and because it is made of hollow rubber, it has good soil removal properties and is not easy to stick to the soil. The compaction wheel 710 is mounted on the compaction wheel support 720 through an eccentric sleeve 732. The compaction intensity is adjusted by an adjustment handle 733: pulling the handle 733 to the lower right disengage it from the positioning groove, moving the handle backward changes the angle of the eccentric sleeve 732 through the linkage mechanism, thereby increasing the pressure of the compaction wheel on the ground and increasing the compaction intensity; moving the handle forward decreases the pressure and weakens the compaction intensity. After adjusting to the desired level, pushing the handle back into the positioning groove locks it in place. To ensure the straightness of the sowing rows, the center line of the press roller 710 must coincide with the center line of the sowing furrow opener 440. If a deviation occurs, it can be fine-tuned by loosening the locking nut 731 of the fixed eccentric sleeve 732 and slightly rotating the left and right eccentric sleeves 732. After adjustment, the locking nut 731 should be tightened again.

[0042] like Figure 9 The diagram shows a schematic of the weed-removing wheel adjustment mechanism. The seedbed straw cleaning mechanism 800 is located at the front end of each sowing unit and is responsible for cleaning the seedbed before furrowing and sowing. It consists of a weed-removing wheel 810 and a soil-loosening and stubble-removing disc 820. The weed-removing wheel 810 is responsible for separating long straws and weeds on the ground to both sides of the seedbed, while the stubble-removing disc 820 cuts into the soil, cuts off the stubble, and further loosens the soil to create a clean seedbed. The depth of penetration of the weed-removing wheel 810 is crucial. Its height is adjusted by a cam disc mechanism 830: the operator presses a spring pin 831 inward by hand to disengage the disc 830 from the positioning pin 832, and then the disc can be rotated. Different radii of the disc 830 correspond to different heights of the weed-removing wheel 810. After rotating to the appropriate position, the spring pin 831 is released, causing it to pop out under the spring force, and the positioning pin 832 falls back into the corresponding hole on the disc, completing the positioning.

[0043] like Figure 10The diagram shows a schematic of the transmission structure. The transmission mechanism 600 is responsible for transmitting the rotational power of the ground wheel 500 to the seed metering device and fertilizer metering device. It adopts an upper-mounted chain drive and a symmetrically arranged double-drive structure, that is, there is a set of transmission rubber wheels 620 on each side, which are hinged to the tire surface of the ground wheel 500 via a transmission wheel axle 630. The transmission wheels 620 are pressed onto the ground wheel 500 by an adjusting screw 660 and a transmission rubber wheel tension spring 670. By loosening the lock nut and rotating the adjusting nut to change the exposed length of the adjusting screw 660, the tension of the tension spring 670 can be adjusted, thereby changing the friction between the transmission wheel 620 and the tire surface of the ground wheel 500. Lengthening the exposed part increases friction and reduces slippage; shortening it decreases friction. This design ensures the reliability of the transmission and allows for adjustments according to field conditions.

[0044] In addition, such as Figure 11 As shown, a set screw 510 is provided at the hub of the ground wheel 500. This set screw 510 is aligned with a plane on the ground wheel axle 530 and secured by a set screw nut 540. When it is necessary to disassemble the ground wheel axle 530, first tighten this set screw 510 to press against the plane on the axle, thus preventing the ground wheel axle from rotating with the center bolt 520, facilitating disassembly. Figure 12 As shown, one or more fertilizer outlets 311 are provided at the bottom of the fertilizer tank 310, and are covered by a stainless steel cover plate with a welded round rod. After the operation is completed, the cover plate is pulled up, and the remaining fertilizer in the tank can be quickly discharged from the fertilizer outlet 311, which is convenient for cleaning and maintenance.

[0045] As can be seen from the detailed description of each mechanical component above, this utility model successfully constructs a high-performance, highly reliable, easily adjustable, and easy-to-maintain purely mechanical no-till planter through a series of ingenious mechanical structural designs and optimized combinations. It effectively solves the clogging problem of existing equipment under high straw cover, improves the accuracy and stability of sowing and fertilization, and has good prospects for widespread application.

Claims

1. A no-till finger-clamp precision fertilizer seeder, comprising a frame (100), a traction beam (200) hinged to the front end of the frame, a fertilization mechanism (300), a seeding mechanism (400), a ground wheel (500), and a transmission mechanism (600), characterized in that: The fertilizer applicator (340) of the fertilizer applicator (300) is a notched disc type and is installed on the frame (100) through a depth adjustment chamber (344) and a U-shaped clamp (343). The surface of the notched disc (341) forms an acute angle with the forward direction. The sowing mechanism (400) is connected to the main beam (120) of the frame (100) via a parallel four-bar linkage contouring mechanism (450); The end of the sowing mechanism (400) is provided with a V-shaped hollow rubber wheel soil compactor (700). The seeder also includes a bed straw cleaning mechanism (800), which consists of a straw-removing wheel (810) and a soil-loosening and stubble-removing disc (820) and is located at the front end of each seeding unit.

2. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, A sowing depth adjustment mechanism is provided between the parallel four-bar linkage contouring mechanism (450) and the sowing furrow opener (440). The mechanism includes a sowing depth adjustment handle (441) and a toothed plate with multiple positioning grooves. The soil penetration depth of the sowing furrow opener (440) can be changed by pushing the handle (441) forward or backward.

3. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The V-shaped hollow rubber wheel type soil compactor (700) has a compaction wheel (710) mounted on a compaction wheel bracket (720) via an eccentric sleeve (732), and is provided with a compaction intensity adjustment handle (733). The compaction intensity is adjusted by changing the angle of the eccentric sleeve (732).

4. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The height of the straw-removing wheel (810) of the seedbed straw cleaning mechanism (800) can be adjusted by a cam disc mechanism (830). The cam disc mechanism (830) includes a positioning pin (832) and a spring pin (831). Pressing the spring pin (831) and rotating the disc can change the height of the straw-removing wheel (810) off the ground.

5. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The transmission mechanism (600) is a symmetrically arranged dual transmission structure, including left and right transmission rubber wheel components and transmission component assembly. The transmission rubber wheel is pressed against the tire surface of the ground wheel (500) by an adjusting screw (660) and a tension spring (670).

6. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The finger-clamp seed metering device (420) of the seeding mechanism (400) is equipped with a seed cleaning brush (423). The seed cleaning brush (423) adjusts its distance from the finger clamp plate (422) through a ten-position adjustment mechanism on one side. The adjustment mechanism includes an adjustment hole for inserting a special wrench (428).

7. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The fertilizer applicator (300) has a soil-squeezing blade (346) inside the notched disc (341). The soil-squeezing blade (346) is mounted on the bracket by three adjusting bolts. Its relative position to the notched disc (341) can be adjusted by tightening the upper bolt and the rear bolt respectively.

8. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The traction beam (200) is provided with a traction beam lifter (900), which includes a positioning bushing, an adjusting handle and a wave pin. The height of the traction hook (210) can be adjusted by rotating the handle.

9. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The bottom of the fertilizer box (310) of the frame (100) is provided with at least one fertilizer outlet, and the fertilizer outlet is provided with an openable cover plate.

10. The no-till finger-clamp precision fertilizer seeder according to claim 1, characterized in that, The hub of the ground wheel (500) is provided with a set screw, which is aligned with the plane on the ground wheel axle to prevent the ground wheel axle from rotating when it is disassembled.

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