Garlic planting device with precise adjustment of seeding depth

Abstract

The application discloses a garlic planting device with accurate seeding depth adjustment, and belongs to the technical field of garlic planting, which comprises a moving frame assembly, a garlic particle size screening mechanism, a seeding hopper, fixing bolts and a self-adaptive depth adjustment assembly; the seeding hopper is arranged below the garlic particle size screening mechanism and used for receiving the garlic particles screened by the garlic particle size screening mechanism; and the seeding hopper is detachably connected with the moving frame assembly through the fixing bolts. Through the resistance sensing mechanism of the lifting probe, in combination with the torsional spring and the connecting rod transmission structure, the automatic adjustment of the seeding depth according to the dryness and hardness of the soil is realized, that is, the depth is increased in dry soil and kept constant in wet soil, manual shutdown adjustment is not needed, the seeding requirement of different soil conditions is accurately adapted, the problems of insufficient water absorption and rotting of the garlic particles are effectively solved, and the seed germination rate and survival rate are improved.

Description

Technical Field

[0001] This invention belongs to the field of garlic planting technology, specifically referring to a garlic planting device with precise adjustment of planting depth. Background Technology

[0002] As an important economic crop and condiment, the degree of mechanization and precision in garlic cultivation directly impacts its yield and quality. Currently, the following technical challenges exist in garlic planting operations: 1. Inefficient screening process before planting: Traditional garlic clove screening relies on manual picking or shaking of simple sieves, which is not only time-consuming and labor-intensive, but also prone to problems such as incomplete screening and unclear particle size classification. After garlic cloves of different sizes are mixed and planted, the difference in growth rate will increase the difficulty of field management, ultimately affecting the uniformity and commercial value of garlic.

[0003] 2. The planting depth cannot adapt to soil conditions: The trenching depth of existing garlic planting equipment is mostly a fixed value, while there are significant differences in soil moisture and hardness in the field. In dry and hard soil, planting at a fixed depth can easily lead to insufficient water absorption by garlic cloves and a reduced germination rate. In moist and loose soil, planting too deep can cause garlic cloves to rot. Manual adjustment of the depth requires frequent machine stops, which seriously affects the efficiency of operation.

[0004] 3. Poor adaptability to field movement: The anti-slip performance of the wheels of conventional seeding equipment is insufficient, and it is easy to slip and get stuck in muddy or uneven fields, which increases the difficulty of operation; at the same time, when multiple devices work together in the field, there is a lack of effective warning devices, which can easily lead to collisions and other safety hazards.

[0005] 4. Low level of equipment integration: Most sowing equipment only has a single sowing function. Garlic clove screening needs to be completed with additional equipment, which is complicated and has high equipment transportation and operation costs, making it difficult to meet the integrated operation needs of small-scale growers.

[0006] To address the aforementioned issues, there is an urgent need to develop a garlic planting device that integrates garlic grain screening, adaptive depth planting, and convenient field mobility, in order to solve problems such as low screening efficiency, poor adaptability to planting depth, and limited equipment functionality in existing technologies. Summary of the Invention

[0007] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a garlic planting device with precisely adjustable planting depth. Through a resistance sensing mechanism using a lifting probe, combined with a torsion spring and linkage transmission structure, the planting depth is automatically adjusted according to soil moisture and hardness—in dry soil, the depth increases, while in moist soil, the depth remains constant. No manual intervention is required, precisely adapting to different soil conditions. This effectively solves the problems of insufficient water absorption or rotting of garlic cloves, improving seed germination and survival rates. It also effectively addresses the issue that most existing garlic planting equipment on the market uses a fixed planting depth, while significant differences exist in soil moisture and hardness. In dry, hard soil, fixed-depth planting easily leads to insufficient water absorption and reduced germination rates; in moist, loose soil, excessively deep planting causes garlic clove rotting. Manual depth adjustment requires frequent machine stops, severely impacting operational efficiency.

[0008] The technical solution adopted by the present invention is as follows: The present invention proposes a garlic planting device with precise adjustment of planting depth, including a movable frame assembly, a garlic particle size screening mechanism, a planting hopper, fixing bolts and an adaptive depth adjustment assembly; the planting hopper is correspondingly arranged below the garlic particle size screening mechanism to receive garlic particles after being screened by the garlic particle size screening mechanism; the planting hopper is detachably connected to the movable frame assembly through fixing bolts.

[0009] Furthermore, the mobile frame assembly includes a mounting base, a push handle, anti-slip wheels, and a warning light; the push handle is fixedly connected to the upper surface of the mounting base for controlling the movement of the device; the anti-slip wheels are evenly distributed and rotatably connected to the bottom of the mounting base, and the outer surface of the anti-slip wheels is evenly provided with anti-slip protrusions; the warning light is fixedly connected to the mounting base for providing safety warnings to field workers.

[0010] Furthermore, the garlic particle size screening mechanism includes a fixed vertical plate, a screening box, a support spring, a drive motor, a cam, a first screen plate, a second screen plate, a baffle, locking bolts, and a conveyor bag; the fixed vertical plates are symmetrically fixed to the upper surface of the mounting base; the screening box is slidably connected between the two fixed vertical plates to accommodate the garlic particles to be screened; the support spring is connected between the screening box and the fixed vertical plate; the drive motor is fixedly connected to the fixed vertical plate; the cam is fixedly connected to the output end of the drive motor, and the cam abuts against the outer wall of the screening box.

[0011] Furthermore, the first screen plate is inclined and fixed to the inner surface of the fixed vertical plate; the second screen plate passes through and is fixedly connected to the fixed vertical plate; the baffle passes through and is slidably connected to the fixed vertical plate to adjust the grading discharge channel; locking bolts are symmetrically inserted through the baffle and are threadedly connected to the fixed vertical plate to lock the position of the baffle.

[0012] Furthermore, one end of the conveying bag is fixedly connected to the outer surface of the fixed upright plate for conveying large-diameter garlic cloves screened out; the end of the conveying bag away from the fixed upright plate is provided with a buckle or sealing part for opening and closing the outlet of the conveying bag.

[0013] Furthermore, the adaptive depth adjustment component includes a mounting bracket, a fixing block, a rotating shaft, a torsion spring, a rotating sleeve, a lifting probe, a fastening nut, a fixing bracket, a grooving tool, a hinge shaft, and a transmission link; the mounting brackets are symmetrically fixed to the bottom surface of the mounting base; the fixing block is fixedly installed between the two mounting brackets and is fixedly connected to the mounting base; the rotating shaft passes through and is rotatably connected to the mounting bracket, and the diameter of the rotating shaft is smaller than the inner diameter of the fixing block.

[0014] Furthermore, a torsion spring is sleeved in the gap between the rotating shaft and the fixed block, with one end of the torsion spring fixedly connected to the rotating shaft and the other end fixedly connected to the fixed block; the rotating sleeve is fixedly connected to the rotating shaft and rotates synchronously with it; the lifting probe is slidably inserted into the rotating sleeve, with the end of the lifting probe away from the rotating sleeve being set as a cone shape; the fastening nut is threadedly connected to the lifting probe to lock the extension length of the lifting probe.

[0015] Furthermore, the fixed bracket is symmetrically fixed to the bottom surface of the mounting base; a limiting groove with a cross-shaped cross section is provided in the middle of the fixed bracket; the grooving cutter is slidably embedded in the limiting groove, and the limiting groove is used to restrict the grooving cutter from sliding in a preset direction.

[0016] Furthermore, there are two sets of hinge shafts. One set of hinge shafts passes through and is fixedly connected to the rotating sleeve, while the other set of hinge shafts is fixedly connected to the grooving cutter. The transmission connecting rod is connected between the grooving cutter and the rotating sleeve, and the two ends of the transmission connecting rod are rotatably connected to the two sets of hinge shafts respectively, so as to convert the rotational motion of the rotating sleeve into the linear sliding motion of the grooving cutter.

[0017] Furthermore, the lifting probe can adjust the length of the extended rotating sleeve by tightening the fastening nut to adapt to the planting depth requirements of garlic cloves of different sizes; the lifting probe can overcome the elastic force of the torsion spring according to the soil resistance to drive the rotating shaft to rotate, and then drive the grooving knife to finely adjust the grooving depth through the transmission linkage.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The device integrates garlic particle size screening mechanism and sowing mechanism, eliminating the need for additional screening equipment and simplifying the operation process; the cam + support spring vibration screening structure makes the screening box generate high frequency reciprocating vibration, and the garlic particles roll fully, avoiding material jamming and accumulation, which significantly improves efficiency compared with traditional manual screening; the temporary sealing design of the conveyor bag can realize the batch sowing of garlic particles of the same size, ensuring the uniformity of garlic growth; (2) By using the resistance sensing mechanism of the lifting probe, combined with the torsion spring and linkage transmission structure, the sowing depth is automatically adjusted according to the dryness and hardness of the soil. The depth increases in dry soil and remains constant in moist soil. No manual stopping is required for adjustment. It accurately adapts to the sowing needs of different soil conditions, effectively solves the problem of insufficient water absorption or rotting of garlic cloves, and improves the germination rate and survival rate of seeds. (3) The device adopts a purely mechanical adaptive adjustment and screening drive mode, which does not require complex electrical control components and sensors, resulting in low manufacturing cost and low failure rate. Operators only need to set the initial depth by tightening the nuts and fix the baffle position by locking the bolts to complete the operation preparation. The operation is simple and reduces the technical requirements for users. Particle size classification screening can realize the selection of good varieties for sowing, avoiding nutrient competition caused by the mixed growth of large and small garlic grains. Adaptive depth sowing ensures the consistency of the garlic grain growth environment, laying the foundation for high yield and high quality of garlic. Attached Figure Description

[0019] Figure 1 This invention provides a three-dimensional garlic planting device with precise sowing depth adjustment. Figure 1 ; Figure 2 This invention provides a three-dimensional garlic planting device with precise sowing depth adjustment. Figure 2 ; Figure 3 This is an exploded view of a portion of the structure of a garlic planting device for precise adjustment of planting depth proposed in this invention. Figure 4 A 3D view of the mobile frame components; Figure 5 An exploded view of a garlic particle size screening mechanism; Figure 6 This is a cross-sectional view of the screening box; Figure 7 A 3D view of the adaptive depth adjustment component; Figure 8 An exploded view of the adaptive depth adjustment component; Figure 9 An exploded view of part of the adaptive depth adjustment component; Figure 10 This is a partial structural cross-sectional view of the adaptive depth adjustment component.

[0020] The components include: 1. Moving frame assembly; 101. Mounting base; 102. Push handle; 103. Anti-slip wheel; 104. Warning light; 2. Garlic particle size screening mechanism; 201. Fixed upright plate; 202. Screening box; 203. Support spring; 204. Drive motor; 205. Cam; 206. First screen plate; 207. Second screen plate; 208. Baffle; 209. Locking bolt; 210. Conveying bag; 3. Seeding hopper; 4. Fixing bolt; 5. Adaptive depth adjustment assembly; 501. Mounting bracket; 502. Fixing block; 503. Rotating shaft; 504. Torsion spring; 505. Rotating sleeve; 506. Lifting probe; 507. Fastening nut; 508. Fixed bracket; 509. Limiting groove; 510. Grooving knife; 511. Hinge shaft; 512. Transmission link.

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] like Figures 1-10 As shown.

[0025] In some embodiments, the mobile frame assembly 1 may include a mounting base 101 for supporting components of the device; a push handle 102 fixedly connected to the upper surface of the mounting base 101 for controlling the movement of the device; anti-slip wheels 103 evenly distributed on the bottom of the mounting base 101 and rotatably connected to the mounting base 101; and a warning light 104 fixedly connected to the mounting base 101 for warning other workers in the field.

[0026] Among them, the outer surface of 103 is uniformly provided with anti-slip protrusions, so that the device can still move normally in the field without slipping.

[0027] In some embodiments, the garlic particle size screening mechanism 2 may include a fixed upright plate 201 symmetrically arranged on the upper surface of the mounting base 101, and the fixed upright plate 201 is fixedly connected to the mounting base 101; a screening box 202 slidably connected between the fixed upright plates 201 for holding unscreened garlic particles; a support spring 203 disposed between the screening box 202 and the fixed upright plate 201, one end of the support spring 203 being fixedly connected to the screening box 202, and the other end of the support spring 203 being fixedly connected to the fixed upright plate 201; a drive motor 204 fixedly connected to the fixed upright plate 201; and a cam 205 fixedly connected to the output end of the drive motor 204. The first screen plate 206 is inclinedly disposed on the inner surface of the fixed vertical plate 201 and is fixedly connected to the inner surface of the fixed vertical plate 201; the second screen plate 207 penetrates through and is fixedly connected to the fixed vertical plate 201; the baffle 208 penetrates through and is slidably connected to the fixed vertical plate 201 to block the garlic cloves after screening; the locking bolts 209 are symmetrically disposed on the baffle 208, penetrate through and are slidably connected to the baffle 208, and are threadedly connected to the fixed vertical plate 201; the conveying bag 210 is fixedly connected at one end to the outer surface of the fixed vertical plate 201 to convey the large-diameter garlic cloves screened out.

[0028] The end of the conveyor bag 210 away from the fixed upright plate 201 can be equipped with a buckle or other simple sealing parts to close the outlet of the conveyor bag 210. If necessary, the lock can be released to allow large-diameter garlic cloves to be sown.

[0029] Before the screening operation, the mesh sizes of the first screen plate 206 and the second screen plate 207 are confirmed according to the target screening accuracy. Then, the baffle 208 is slid to the designated position, so that the baffle 208 and the screen plate form a suitable grading discharge channel. The baffle 208 is locked by a locking bolt 209 passing through the baffle 208 and threadedly connected to the fixed vertical plate 201 to prevent displacement during the screening process. The garlic cloves to be screened are poured into the screening box 202. The screening box 202 maintains a stable initial posture under the support of the support spring 203. The drive motor 204 on the fixed vertical plate 201 is started, and the output end of the motor drives the fixedly connected cam 205 to rotate at high speed. When the protruding end of the cam 205 abuts against the screening box 202, it pushes the screening box 202 to move along the guide direction between the fixed vertical plates 201, while simultaneously compressing the support springs 203 on both sides to cause elastic deformation. When the protruding end of the cam 205 disengages from the screening box 202, the support springs 203 release their elastic potential energy, pulling the screening box 202 back to its original position. Through the continuous rotation of the cam 205 and the resetting action of the support springs 203, the screening box 202 forms a high-frequency, small-amplitude reciprocating vibration, providing the power basis for screening garlic cloves.

[0030] In this embodiment, a vibration drive structure of cam + support spring is adopted, which improves the screening efficiency of screening box 202 compared with traditional manual screening. During the vibration process, the garlic cloves are fully tumbled, avoiding material jamming and accumulation, and effectively shortening the screening cycle. At the same time, the conveyor bag 210 can be temporarily closed, so that garlic cloves of the same size can be planted at the same depth when planting garlic in a single batch.

[0031] In some embodiments, the adaptive depth adjustment component 5 may include a mounting bracket 501 symmetrically disposed on the bottom surface of the mounting base 101, and the mounting bracket 501 fixedly connected to the mounting base 101; a fixing block 502 fixedly installed between the mounting brackets 501, and the fixing block 502 fixedly connected to the mounting base 101; a rotating shaft 503 passing through and rotatably connected to the mounting brackets 501, the diameter of the rotating shaft 503 being smaller than the inner diameter of the fixing block 502; a torsion spring 504 disposed between the rotating shaft 503 and the fixing block 502, one end of the torsion spring 504 fixedly connected to the rotating shaft 503, and the other end of the torsion spring 504 fixedly connected to the fixing block 502; a rotating sleeve 505 fixedly connected to the rotating shaft 503; and a lifting probe 506 slidably connected inside the rotating sleeve 505, with the lifting probe 506 positioned away from the end of the rotating sleeve 505. The device is conical in shape; a fastening nut 507 is threadedly connected to the lifting probe 506 to fix the position of the lifting probe 506; a fixed bracket 508 is symmetrically arranged on the bottom surface of the mounting base 101 and is fixedly connected to the mounting base 101; a limiting groove 509 is opened in the middle position of the fixed bracket 508 and the cross-section of the limiting groove 509 is cross-shaped; a grooving knife 510 is slidably connected to the inside of the limiting groove 509; two sets of hinge shafts 511 are provided, one set passes through and is fixedly connected to the rotating sleeve 505, and the other set is fixedly connected to the grooving knife 510; a transmission connecting rod 512 is located between the grooving knife 510 and the rotating sleeve 505, one end of the transmission connecting rod 512 is rotatably connected to the hinge shaft 511 provided on the rotating sleeve 505, and the other end is rotatably connected to the hinge shaft 511 provided on the grooving knife 510.

[0032] In this configuration, the torsion spring 504 is in its naturally extended state, with its two ends fixedly connected to the rotating shaft 503 and the fixed block 502, respectively, driving the rotating shaft 503 to maintain its initial position. The rotating sleeve 505 remains stationary with the rotating shaft 503. At this time, the lifting probe 506 is inserted into the soil to a preset depth and fixed by the fastening nut 507. Under the traction of the transmission link 512, the grooving knife 510 stays at the initial position of the limiting slide 509. When the device is displaced, if the resistance encountered by the lifting probe 506 increases, the soil is relatively dry. The lifting probe 506 will overcome the supporting force provided by the torsion spring 504 and rotate. After the lifting probe 506 rotates, it drives the grooving knife 510 to make a slight downward adjustment through the transmission link 512, increasing the grooving depth and sowing garlic cloves into deeper soil with higher moisture content. When the resistance encountered by the lifting probe 506 is small, the soil moisture is high, and the lifting probe 506 will not rotate. The grooving knife 510 maintains the preset depth to groove and then sows the garlic cloves.

[0033] In this embodiment, the component can automatically identify the soil moisture status through the resistance sensing mechanism of the lifting probe 506: when the soil is dry and the probe resistance increases, the probe rotates against the support force of the torsion spring 504, and drives the grooving blade 510 to adjust downward through the transmission link 512, sowing the garlic seeds to a deeper soil with higher moisture content; when the soil moisture is high and the probe resistance is low, the probe remains stationary, and the grooving blade 510 maintains the preset depth of operation. This design does not require manual intervention of the depth parameters, accurately adapts to the sowing needs of soils with different moisture content, and improves the germination rate of garlic seeds.

[0034] In some embodiments, the device may further include a seeding hopper 3 and fixing bolts 4. The seeding hopper 3 is located below the screening box 202, and the position of the seeding hopper 3 corresponds to the position of the screening box 202. The fixing bolts 4 are symmetrically arranged on the seeding hopper 3, and the seeding hopper 3 and the mounting base 101 are detachable through the fixing bolts 4.

[0035] In practical use, the mounting base 101 of the mobile frame assembly 1 provides a support platform for the entire device. The operator controls the device to move by pushing the handle 102. The anti-slip wheels 103 at the bottom of the mounting base 101 have anti-slip protrusions on their outer surface, which can enhance the friction with the soil in the field and prevent slipping. The warning light 104 can serve as a safety warning to the workers in the surrounding area.

[0036] Before the screening operation, select the first screen plate 206 and the second screen plate 207 with the appropriate screen hole specifications according to the target screening accuracy, slide the baffle 208 to the designated position, and lock the baffle 208 to the fixed plate 201 with the locking bolt 209 to temporarily close the outlet of the screening box 202.

[0037] After the garlic cloves to be screened are poured into the screening box 202, the drive motor 204 is started. The output end of the motor drives the cam 205 to rotate at high speed. When the protruding end of the cam 205 abuts against the screening box 202, it pushes the screening box 202 to move along the guide direction of the fixed vertical plate 201 and squeezes the support spring 203 to undergo elastic deformation. When the protruding end of the cam 205 disengages from the screening box 202, the support spring 203 releases its elastic potential energy and pulls the screening box 202 back to its original position. Through the synergistic effect of the cam 205 and the support spring 203, the screening box 202 generates high-frequency, small-amplitude reciprocating vibration, so that the garlic cloves are graded by passing through the first screen plate 206 and the second screen plate 207 with different screen hole specifications during the vibration process.

[0038] After grading, large-diameter garlic cloves are temporarily stored in conveyor bags 210. The buckle at the outlet of the conveyor bags 210 can be temporarily sealed to ensure that each planting consists of garlic cloves of the same diameter. Garlic cloves of other diameters are collected through the corresponding discharge channels.

[0039] After the qualified garlic cloves are screened, they can fall into the sowing hopper 3 through the discharge port of the screening box 202 after the baffle 208 is removed. The sowing hopper 3 is detachably connected to the mounting base 101 by the fixing bolts 4, which facilitates disassembly, cleaning and maintenance. When the conveying bag 210 is unsealed, large-diameter garlic cloves can also enter the sowing hopper 3 as needed, so as to realize the batch sowing of garlic cloves of different diameters.

[0040] When the torsion spring 504 of the adaptive depth adjustment component 5 is in a naturally extended state, the rotating shaft 503 drives the rotating sleeve 505 to maintain the initial position, and the insertion depth of the lifting probe 506 is pre-fixed by the fastening nut 507. At this time, the grooving knife 510 stays at the initial position of the limiting slide 509 under the traction of the transmission link 512.

[0041] As the device moves forward, the conical tip of the 506 lifting probe inserts into the soil to sense soil resistance in real time. When the soil is dry and hard, the resistance of the lifting probe 506 increases, which overcomes the supporting force of the torsion spring 504 and drives the rotating shaft 503 and the rotating sleeve 505 to rotate. The rotating sleeve 505 pulls the grooving knife 510 downward along the cross-shaped limiting slide groove 509 through the hinge shaft 511 and the transmission connecting rod 512 to increase the grooving depth and allow the garlic seeds to be planted in the deeper soil with higher moisture content.

[0042] When the soil is moist and loose, the lifting probe 506 experiences less resistance, the torsion spring 504 maintains its initial state, and the grooving knife 510 maintains the preset grooving depth to prevent garlic cloves from being planted too deep.

[0043] The garlic cloves in the sowing hopper 3 fall into the furrow as the grooving action is performed, completing the adaptive depth sowing.

[0044] When planting garlic cloves of different sizes in batches, the height of the lifting probe 506 can be manually raised when planting garlic cloves with smaller diameters, thereby reducing the depth of the grooving knife 510; when planting garlic cloves with larger diameters, the height of the lifting probe 506 can be lowered, thereby increasing the depth of the grooving knife 510. The above is the overall workflow of this invention. This step can be repeated for the next use. The actual operation process is very simple and easy to implement.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A garlic planting device with precise adjustment of planting depth, characterized in that: The device includes a movable frame assembly (1), a garlic particle size screening mechanism (2), a seeding hopper (3), fixing bolts (4), and an adaptive depth adjustment assembly (5). The movable frame assembly (1) includes a mounting base (101), and the seeding hopper (3) is positioned below the garlic particle size screening mechanism (2) to receive garlic particles after screening by the garlic particle size screening mechanism (2). The seeding hopper (3) is detachably connected to the movable frame assembly (1) via fixing bolts (4). The adaptive depth adjustment component (5) includes a mounting bracket (501), a fixing block (502), a rotating shaft (503), a torsion spring (504), a rotating sleeve (505), a lifting probe (506), a fastening nut (507), a fixing bracket (508), a grooving knife (510), a hinge shaft (511), and a transmission link (512); the mounting bracket (501) is symmetrically fixed on the bottom surface of the mounting base (101); the fixing block (502) is fixedly installed between the two mounting brackets (501), and the fixing block (502) is fixedly connected to the mounting base (101); the rotating shaft (503) passes through and is rotatably connected to the mounting bracket (501), and the diameter of the rotating shaft (503) is smaller than the inner diameter of the fixing block (502); A torsion spring (504) is sleeved in the gap between the rotating shaft (503) and the fixed block (502). One end of the torsion spring (504) is fixedly connected to the rotating shaft (503), and the other end is fixedly connected to the fixed block (502). A rotating sleeve (505) is fixedly connected to the rotating shaft (503) and rotates synchronously with it. A lifting probe (506) is slidably inserted into the rotating sleeve (505). The end of the lifting probe (506) away from the rotating sleeve (505) is set to be conical. A fastening nut (507) is threadedly connected to the lifting probe (506) and is used to lock the extension length of the lifting probe (506). The fixed bracket (508) is symmetrically fixed on the bottom surface of the mounting base (101); the fixed bracket (508) has a cross-shaped limiting groove (509) in the middle; the grooving knife (510) is slidably embedded in the limiting groove (509), and the limiting groove (509) is used to limit the grooving knife (510) to slide in a preset direction; Two sets of hinge shafts (511) are provided. One set of hinge shafts (511) passes through and is fixedly connected to the rotating sleeve (505), and the other set of hinge shafts (511) is fixedly connected to the grooving knife (510). The transmission link (512) is connected between the grooving knife (510) and the rotating sleeve (505). The two ends of the transmission link (512) are rotatably connected to the two sets of hinge shafts (511) respectively, so as to convert the rotational motion of the rotating sleeve (505) into the linear sliding of the grooving knife (510).

2. The garlic planting device for precise adjustment of planting depth according to claim 1, characterized in that: The mobile frame assembly (1) also includes a push handle (102), anti-slip wheels (103) and a warning light (104); the push handle (102) is fixedly connected to the upper surface of the mounting base (101) for controlling the movement of the device; the anti-slip wheels (103) are evenly distributed and rotatably connected to the bottom of the mounting base (101), and the outer surface of the anti-slip wheels (103) is evenly provided with anti-slip protrusions; the warning light (104) is fixedly connected to the mounting base (101) for providing safety warnings to field workers.

3. The garlic planting device for precise adjustment of planting depth according to claim 2, characterized in that: The garlic particle size screening mechanism (2) includes a fixed vertical plate (201), a screening box (202), a support spring (203), a drive motor (204), a cam (205), a first screen plate (206), a second screen plate (207), a baffle (208), a locking bolt (209), and a conveying bag (210). The fixed vertical plate (201) is symmetrically fixed on the upper surface of the mounting base (101). The screening box (202) is slidably connected between the two fixed vertical plates (201) to accommodate the garlic particles to be screened. The support spring (203) is connected between the screening box (202) and the fixed vertical plate (201). The drive motor (204) is fixedly connected to the fixed vertical plate (201). The cam (205) is fixedly connected to the output end of the drive motor (204), and the cam (205) abuts against the outer wall of the screening box (202).

4. The garlic planting device for precise adjustment of planting depth according to claim 3, characterized in that: The first screen plate (206) is inclined and fixed to the inner surface of the screening box (202); the second screen plate (207) passes through and is fixedly connected to the screening box (202); the baffle (208) passes through and is slidably connected to the screening box (202) to adjust the grading discharge channel; the locking bolts (209) are symmetrically installed on the baffle (208), and the locking bolts (209) are threadedly connected to the screening box (202) to lock the position of the baffle (208).

5. The garlic planting device with precise sowing depth adjustment according to claim 4, characterized in that: One end of the conveying bag (210) is fixedly connected to the outer surface of the screening box (202) for conveying large-diameter garlic cloves that have been screened out; a buckle is provided at the end of the conveying bag (210) away from the screening box (202) for opening and closing the outlet of the conveying bag (210).

6. The garlic planting device with precise sowing depth adjustment according to claim 5, characterized in that: The lifting probe (506) can adjust the length of the extended rotating sleeve (505) by tightening the fastening nut (507) to adapt to the planting depth requirements of garlic cloves of different sizes; the lifting probe (506) can overcome the elastic force of the torsion spring (504) according to the soil resistance to drive the rotating shaft (503) to rotate, and then drive the grooving knife (510) to finely adjust the grooving depth through the transmission link (512).

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