Garlic seed meter for garlic seeder

Abstract

This invention discloses a garlic seed metering device for a garlic planter, belonging to the field of garlic planting machinery technology. It includes a garlic conveyor chain support structure, a garlic conveyor chain, and a protective cover to prevent garlic seeds from falling. The garlic conveyor chain support structure includes a set of sprockets rotatably connected to the frame of the planting mechanism. The garlic conveyor chain includes a chain and a composite seed scoop, with the composite seed scoops fixed at intervals on the chain. The composite seed scoop includes a seed selection scoop and a garlic receiving guide plate. The cavity of the seed selection scoop can hold one garlic seed. In the seed picking section, the opening of the seed selection scoop faces rearward. The garlic receiving guide plate is located below and behind the seed selection scoop, and its upper surface is the garlic seed receiving surface. The garlic seed receiving surface smoothly transitions to the lower inner wall of the cavity of the seed selection scoop, and the garlic seed receiving surface slopes downward from the rear end to the front end to form a garlic seed introduction channel, guiding the garlic seed into the cavity of the seed selection scoop. It features a compact structure, low energy consumption, and effectively avoids missed and repeated planting of garlic seeds.

Description

[0001] This application is a divisional application of application number 202210870600.8, filed on July 22, 2022, entitled "A Garlic Planter". Technical Field

[0002] This invention relates to the field of garlic planting machinery technology. Background Technology

[0003] Our company filed a patent application in 2010 entitled "A Garlic Planter," Chinese Patent Publication No. CN111630987A, published on September 8, 2020. This product received a positive market response. However, after long-term in-depth research, our R&D team has identified areas for further improvement in this technical solution:

[0004] 1. The product has the following structure: The garlic seed metering device is fitted together with the garlic seed metering box through a garlic seed metering device fitting hole set at the bottom of the garlic seed metering box, and the fitting hole is covered by a leather baffle. When the composite seed spoon passes through the garlic seed metering device fitting hole, the leather baffle is lifted up to allow it to pass through. After the composite seed spoon passes through the garlic seed metering device fitting hole, the leather baffle falls down to cover the garlic seed metering device fitting hole, so as to prevent the garlic seeds from falling out of the gap between the chain and the garlic seed metering device fitting hole.

[0005] The following problems exist: When the composite seed spoon passes through the locking hole of the garlic seed metering device and lifts the leather baffle upwards, the garlic seeds above the leather baffle will be lifted to the side. Therefore, when the composite seed spoon just enters the garlic seed metering box from the bottom, it cannot pick up garlic seeds, which will affect the seed picking of the seed picking spoon. Especially when there are few garlic seeds in the garlic seed metering box, the seed picking spoon will not be able to pick up garlic seeds, resulting in empty space in the seed selection spoon, which will cause missed planting during the planting process. At the same time, it will also cause wear and tear on the composite seed spoon and the leather baffle during friction, and increase the running resistance.

[0006] 2. The product has the above-mentioned structure and the following structure: the composite seed spoon includes a seed-taking spoon and a seed-selecting spoon. The cavity of the seed-selecting spoon can hold one garlic seed, and the cavity of the seed-taking spoon can hold two or more garlic seeds. The seed-taking spoon picks up multiple garlic seeds in the garlic seed box.

[0007] The following problems exist: The above-mentioned seed-taking spoon can only take seeds from inside the garlic seed box. To ensure seed-taking accuracy (single seed), the seed-taking spoon needs to be made relatively wide. When there are few garlic seeds in the garlic seed box, due to the limited depth of the seed-taking spoon's cavity, the irregular accumulation of garlic seeds may prevent the spoon from taking any seeds during the upward scooping process (for example, the garlic seeds above the seed-taking spoon are arranged on the edge of the seed-taking spoon's cavity, and the garlic seeds will slide outward from the edge during the upward movement of the seed-taking spoon). This is especially true when there are few garlic seeds in the garlic seed box, making it easy to miss the seeds. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a garlic seed metering device for a garlic planter, which has the characteristics of compact structure, low energy consumption, and effective prevention of missed planting and double planting of garlic seeds.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] A garlic seed metering device for a garlic planter includes a garlic conveyor chain support structure, a garlic conveyor chain, and a protective cover to prevent garlic seeds from falling. The garlic conveyor chain support structure includes a set of sprockets rotatably connected to the frame of the planting mechanism. The garlic conveyor chain includes a chain and composite seed scoops, with the composite seed scoops fixed at intervals on the chain. The chain meshes with and is supported by each sprocket, forming a ring-shaped garlic conveyor chain transmission connection structure with a garlic seed conveying and planting channel. The garlic seed conveying and planting channel, arranged from front to back in the direction of chain movement, consists of: first, a garlic seed picking section conveyed from bottom to top; the upper end of the garlic seed picking section... The garlic seed conveying section is folded forward by the rear sprocket and then enters the garlic seed conveying section from back to front. The front end of the garlic seed conveying section is then folded downward by the front sprocket and enters the garlic seed planting section from top to bottom. The lower end of the garlic seed planting section is folded by the lower front sprocket, and the garlic seed falling prevention cover covers the garlic seed planting section to confine the garlic seeds within the garlic seed falling prevention cover and prevent the garlic seeds from slipping out of the gap between the inner wall of the garlic seed falling prevention cover and the composite seed spoon. The lower end of the garlic seed falling prevention cover corresponding to the lower end of the garlic seed planting section is the garlic seed dispensing port, and is equipped with a garlic seed dispensing device linkage structure for transmission connection with the drive device.

[0011] The composite seed scoop includes a seed selection scoop and a garlic receiving guide plate. The cavity of the seed selection scoop can hold one garlic seed. In the garlic seed picking section, the opening of the seed selection scoop faces backward. The garlic receiving guide plate is located below and behind the seed selection scoop. Its upper surface is the garlic seed receiving surface. The garlic seed receiving surface smoothly transitions to the lower inner wall of the cavity of the seed selection scoop, and the garlic seed receiving surface slopes downward from the rear end to the front end to form a garlic seed introduction channel, which guides the garlic seed into the cavity of the seed selection scoop.

[0012] The invention is further improved in that:

[0013] The back of the composite seed spoon is a garlic seed tray formed by the rear end face of the seed selection spoon and the garlic receiving guide plate, so as to receive the garlic seeds falling from the seed selection spoon above within the garlic seed drop protection cover.

[0014] The garlic seed metering device has a shaft hub connection structure: the inner hole of the lower front sprocket in each garlic seed metering device is fixedly connected to the bushing, and the inner hole of the bushing is a transmission hole with a polygonal cross-section.

[0015] The garlic seed drop prevention cover is fixedly connected to the planting mechanism frame; in the garlic conveyor chain support structure, there are four sprockets rotatably connected to the planting mechanism frame, namely the rear sprocket, the front sprocket, the lower front sprocket, and the lower rear sprocket, thus forming an oblique quadrilateral support for the garlic conveyor chain; this reduces the height of the annular garlic conveyor chain transmission connection structure. The garlic seed planting section is inclined backward from top to bottom, thereby reducing the space occupied at the bottom of the garlic planter and making the garlic planter smaller; the garlic seed picking section is inclined forward from bottom to top.

[0016] The beneficial effects of adopting the above technical solution are as follows:

[0017] The composite seed spoon has been improved by replacing the seed-collecting spoon, which can hold more than two garlic seeds, with a garlic-receiving guide plate. This reduces the size of the composite seed spoon and saves on manufacturing costs. By adopting this composite seed spoon structure, a seed-collecting structure is set at the fitting part of the garlic seed metering device and the garlic seed metering box. The composite seed spoon now collects seeds within the seed-collecting structure instead of inside the garlic seed metering box, increasing the reliability of seed collection and thus reducing the missed planting rate. This avoids the disadvantages of the previous structure where the fitting hole of the garlic seed metering device was covered by a leather baffle, which caused wear during the friction between the composite seed spoon and the leather baffle, increased running resistance, and damage to the garlic seeds when the leather baffle was lifted upwards.

[0018] It features a compact structure, low energy consumption, and effectively avoids missed planting and replanting of garlic seeds. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a garlic planter;

[0020] Figure 2 yes Figure 1 Axonometric drawing;

[0021] Figure 3 yes Figure 1 Axonometric drawing;

[0022] Figure 4 This is a schematic diagram of the internal structure of the left side of the garlic planting device;

[0023] Figure 5 This is a schematic diagram of the internal structure on the right side of the garlic planting device;

[0024] Figure 6 This is an axonometric view of a garlic planting device;

[0025] Figure 7 This is a schematic diagram of the composite seed spoon.

[0026] In the attached diagram: 1. Frame; 2. Planting mechanism frame; 3. Chain; 4. Composite seed scoop; 4-1. Garlic receiving guide plate; 4-2. Seed selection scoop; 4-3. Garlic seed tray; 5. Garlic seed metering box; 6. Protective cover to prevent garlic seeds from falling; 7. Rear sprocket; 8. Front sprocket; 9. Lower front sprocket; 10. Garlic seed metering port; 11. Furrow opener; 11-1. Left wing; 11-2. Right wing; 12. Seed furrow retainer; 13. Lower rear sprocket; 14. Bushing; 15. Garlic planting mechanism linkage shaft; 16. Gasoline engine; 17. Main clutch; 18. Gearbox; 19. 20. Seed metering device gearbox; 21. Seed picking chamber; 22. Upper pulley of conveyor belt; 23. Lower pulley of conveyor belt; 24. Conveyor belt; 25. Garlic receiving body; 26. Transition belt conveyor mechanism transmission chain; 27. Wheel drive power output shaft; 28. Garlic planting mechanism transmission shaft; 29. ​​Upper pulley transmission sprocket; 30. Garlic seed metering device transmission sprocket; 31. Front wheel; 32. Rear wheel; 33. Handrail.

[0027] The orientation description in this application is based on the orientation of the garlic planter, with the direction in which the garlic planter moves forward being the front, and the left and right sides being determined by this orientation. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] For ease of explanation, a garlic planter will be used as an example for detailed description.

[0030] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.

[0031] Depend on Figures 1-7As shown in the embodiment, this embodiment includes a frame 1, on which a garlic planting device is provided; the garlic planting device includes one or more garlic planting mechanisms and a garlic seed metering box (5); the garlic planting mechanism includes a planting mechanism frame 2, a garlic seed metering device and a furrow opener 11 set on the planting mechanism frame 2; the garlic seed metering device includes a garlic conveying chain support structure, a garlic conveying chain and a garlic seed drop protection cover 6; the garlic conveying chain support structure includes a set of sprockets rotatably connected to the planting mechanism frame 2; the garlic conveying chain includes a chain 3 and a composite seed spoon 4, the composite seed spoon 4 being fixed at intervals on the chain 3; the chain 3 is meshed with and supported by each sprocket to form a ring-shaped garlic conveying chain transmission connection structure with a garlic seed conveying and planting channel, the garlic seed conveying and planting channel is arranged from front to back in the forward direction of the chain 3 as follows: first, the garlic seed picking section is conveyed from bottom to top, the upper end of the garlic seed picking section is conveyed to the rear sprocket 7. The garlic seed conveyor enters the rear-to-front section via a forward folding mechanism. The front end of this section then folds downwards via a front sprocket 8 into the top-to-bottom section for planting garlic seeds. The lower end of the planting section folds via a lower front sprocket 9, and a protective cover 6 prevents the garlic seeds from falling out. This covers the planting section, confining the seeds within the protective cover 6 and preventing them from slipping through the gap between the inner wall of the protective cover 6 and the composite seed spoon 4. A corresponding protective cover is also present at the lower end of the planting section. The lower end of the garlic seed drop cover 6 is the garlic seed discharge port 10. Each garlic planting mechanism is arranged horizontally at intervals and is equipped with a garlic seed metering linkage structure for transmission connection with the drive device. The furrow opener 11 includes a left wing 11-1 and a right wing 11-2, and also includes a seed furrow retainer 12. The seed furrow retainer 12 is located at the rear end of the garlic seed discharge port 10, and its front end is embedded in the gap between the left wing 11-1 and the right wing 11-2 of the furrow opener.

[0032] The composite seed spoon 4 includes a seed selection spoon 4-2 and a garlic receiving guide plate 4-1. The cavity of the seed selection spoon 4-2 can hold one garlic seed. In the garlic seed picking section, the opening of the seed selection spoon 4-2 faces rearward. The garlic receiving guide plate 4-1 is located below and behind the seed selection spoon 4-2, and its upper surface is the garlic seed receiving surface. The garlic seed receiving surface smoothly transitions to the lower inner wall of the cavity of the seed selection spoon 4-2, and the garlic seed receiving surface slopes downward from the rear end to the front end to form a garlic seed introduction channel to guide the garlic seed into the cavity of the seed selection spoon 4-2. The garlic planting device is equipped with a seed picking structure, which is located at the fitting part of the garlic seed picking section and the garlic seed metering box 5. The seed picking structure includes a seed picking cavity 20 and a garlic seed picking section that cooperates with the seed picking cavity 20. The gap between the inner wall of the seed picking cavity 20 and the composite seed spoon 4 should not allow the garlic seed to slip. The upper port of the seed-taking chamber is connected to the bottom of the garlic seed metering box 5. When the garlic planter is planting, the drive device drives the garlic conveying chain of each garlic seed metering device to rotate through the linkage structure of the garlic seed metering device. The chain 3 drives the composite seed spoon 4 to be conveyed from the lower port of the seed-taking chamber to the upper port of the seed-taking chamber. After the composite seed spoon 4 in the seed-taking chamber 20 rises out of the upper port of the seed-taking chamber, the garlic seeds in the box of the garlic seed metering box 5 fall from the upper port of the seed-taking chamber into the seed-taking chamber 20. Before the garlic seeds fall to the lower port of the seed-taking chamber, they are blocked by the next composite seed spoon 4 that has entered the seed-taking chamber 20. The garlic seeds received by the garlic receiving guide plate 4-1 are introduced into the cavity of the seed selection spoon 4-2 through the garlic seed introduction channel, so that the seed selection spoon 4-2 completes the action of selecting a garlic seed in the seed-taking structure.

[0033] The composite seed scoop 4, which selects a single garlic seed, rises from the seed-taking chamber 20 into the garlic seed-discharging box 5. Then, it is folded forward by the rear sprocket 7 and enters the garlic seed conveying section from back to front. The composite seed scoop 4 is flipped accordingly, and the seed selection scoop 4-2, which has already collected a single garlic seed, faces upward to prevent the garlic seed from falling during the conveying process. The garlic receiving guide plate 4-1 is erected so that the garlic seed on the garlic receiving guide plate 4-1 falls into the garlic seed-discharging box 5. Then, it is folded downward by the front sprocket 8 and enters the garlic seed sowing section from top to bottom. The composite seed scoop 4 is flipped accordingly, and the cavity of the seed selection scoop 4-2 tilts downward from the inside to the outside so that a single garlic seed in the seed selection scoop 4-2 slides out of the seed selection scoop 4-2 and falls downward in the closed channel formed by the inner wall of the anti-garlic seed falling cover 6. It is then received on the back of the composite seed scoop 4 below and discharged from the garlic seed discharging port 10.

[0034] The garlic seed outlet 10 is located above the furrow opener 11. The furrow opener 11 is equipped with a transition belt conveyor mechanism, which includes a garlic seed conveyor belt, an upper pulley 21 and a lower pulley 22. The garlic seed conveyor belt includes a conveyor belt 23 and garlic receiving bodies 24 spaced apart on the conveyor belt 23. The conveyor belt 23 is supported on the upper pulley 21 and the lower pulley 22 for transmission connection. The transition belt conveyor mechanism is connected to the sprocket drive of the garlic seed outlet 10 through a conveyor belt transmission structure to drive the garlic seed conveyor belt. The transition belt conveyor mechanism is used to receive garlic seed seed outlet 10. The fallen garlic seeds are conveyed to the bottom of the furrow opened by the furrow opener 11 in front of the seed furrow retainer 12; this prevents the garlic seeds from bouncing and jumping due to the large distance between the garlic seed outlet 10 and the bottom of the furrow, thus ensuring the accuracy of the garlic seed planting position; the width of the transition belt conveyor mechanism is smaller than the width of the garlic seed outlet 10, thus avoiding the limitation of the minimum included angle between the left wing 11-1 and the right wing 11-2 of the furrow opener because the garlic seed outlet 10 is located in the gap between the left wing 11-1 and the right wing 11-2 of the furrow opener, so as to further reduce the included angle, thereby further reducing the furrow opening resistance and saving energy;

[0035] When the garlic planter is planting, a garlic seed falling from the seed discharge port 10 is caught by the garlic receiving body 24. Under the operation of the garlic seed conveyor belt, the garlic receiving body 24 transports the garlic seed downward. When it is close to the bottom of the furrow opened by the furrow opener 11, the garlic receiving body 24 flips over, and the garlic seed falls from the garlic receiving body 24 to the bottom of the furrow in front of the seed furrow retainer 12.

[0036] The back of the composite seed spoon 4 is a garlic seed tray 4-3 formed by the rear end face of the seed selection spoon 4-2 and the garlic receiving guide plate 4-1, so as to receive the garlic seeds falling from the seed selection spoon 4-2 above within the garlic seed falling protection cover 6.

[0037] The garlic seed drop prevention cover 6 is fixedly connected to the planting mechanism frame 2; in the garlic conveyor chain support structure, there are four sprockets rotatably connected to the planting mechanism frame 2, namely the rear sprocket 7, the front sprocket 8, the lower front sprocket 9, and the lower rear sprocket 13, thus forming an oblique quadrilateral support for the garlic conveyor chain; in order to reduce the height of the annular garlic conveyor chain transmission connection structure, the garlic seed planting section is inclined from top to bottom and backward, thereby reducing the space occupied at the bottom of the garlic planter and making the garlic planter smaller; the garlic seed picking section is inclined from bottom to top and forward, in order to facilitate the design of the garlic seed inlet channel tilt angle in the garlic receiving guide plate 4-1.

[0038] The upper port of the seed-taking chamber is located at the lowest point of the garlic seed-raising box 5. The inner wall of the garlic seed-raising box 5 has a garlic seed guide ramp. The garlic seed guide ramp gradually slopes and converges from top to bottom toward the upper port of the seed-taking chamber, so that the garlic seeds in the garlic seed-raising box 5 slide down the garlic seed guide ramp and are guided into the seed-taking chamber 20. When there are few garlic seeds in the garlic seed-raising box 5, it will not affect the operation of the seed-taking structure.

[0039] The conveyor belt drive structure includes an upper pulley drive sprocket 28 mounted on the upper pulley 21 of the conveyor belt, a garlic seed metering device drive sprocket 29 coaxially fixed with the lower front sprocket 9, and a transition belt conveyor mechanism drive chain 25. The upper pulley drive sprocket 28 and the garlic seed metering device drive sprocket 29 are connected by the transition belt conveyor mechanism drive chain 25.

[0040] The conveyor belt 23 is a leather belt, and the garlic receiving body 24 is a leather support plate set perpendicular to the surface of the leather belt. The leather belt and the leather support plate are integrally formed.

[0041] The leather tray has a width to accommodate one garlic clove, so as to minimize the width of the transition belt conveyor mechanism, thereby minimizing the angle between the left wing 11-1 and the right wing 11-2. The left wing 11-1 and the right wing 11-2 of the furrow opener located on both sides of the leather tray form a barrier to prevent the garlic clove from falling off the sides of the leather tray.

[0042] The garlic seed metering device linkage structure is a shaft-hub connection structure: the inner hole of the lower front sprocket 9 in each garlic seed metering device is fixedly connected to the bushing 14. The inner hole of the bushing 14 is a transmission hole with a polygonal cross-section. The garlic planting mechanism linkage shaft 15 is slidably connected to the transmission hole of each garlic seed metering device. The cross-section of the garlic planting mechanism linkage shaft 15 is a polygon that matches the cross-section of the inner hole of the bushing 14, so as to fix them together circumferentially. The lower front sprocket 9 and the garlic seed metering device transmission sprocket 29 are fixed together coaxially through the garlic planting mechanism linkage shaft 15.

[0043] A drive unit, a wheel drive chain, and a garlic seed metering device transmission structure are provided on the frame 1. The drive unit includes a diesel engine or gasoline engine 16, a main clutch 17, and a transmission 18. The transmission 18 converts the high-speed output of the diesel engine or gasoline engine 16 into a low-speed, high-torque power output through the wheel drive output shaft 26 of the transmission 18. The main clutch 17 connects or disconnects the power transmission between the diesel engine or gasoline engine 16 and the transmission 18. The wheel drive output shaft 26 of the transmission 18 drives the wheels to rotate through the wheel drive chain.

[0044] The garlic seed metering device transmission structure includes a secondary clutch, a seed metering device gearbox (plant spacing adjustment device) 19, and a garlic planting mechanism drive shaft 27. The planter drive power output shaft (not shown in the figure) of the gearbox 18 is speed-changed by the seed metering device gearbox 19 (to adjust the plant spacing), and then connected to the garlic planting mechanism linkage shaft 15 through the garlic planting mechanism drive shaft 27, thereby driving the garlic conveyor chain of each garlic seed metering device to rotate. The secondary clutch connects or disconnects the power output shaft of the main clutch 17 with the power output shaft of the planter drive of the gearbox 18 to transmit power. The secondary clutch is located inside the gearbox 18.

Claims

1. A garlic seed metering device for a garlic planter, comprising a garlic conveying chain support structure, a garlic conveying chain, and a protective cover (6) to prevent garlic seeds from falling off; the garlic conveying chain support structure includes a set of sprockets rotatably connected to the frame (2) of the planting mechanism; the garlic conveying chain includes a chain (3) and a composite seed scoop (4), the composite seed scoop (4) being fixed at intervals on the chain (3); the chain (3) meshes with and is supported by each of the sprockets to form an annular garlic conveying chain transmission connection structure with a garlic seed conveying and planting channel, the garlic seed conveying and planting channel being arranged in the forward direction of the chain (3) from front to back as follows: first, a garlic seed picking section is conveyed from bottom to top, the upper end of the garlic seed picking section is connected to a rear sprocket. (7) The garlic seed conveying section is folded forward and enters the garlic seed conveying section from back to front. The front end of the garlic seed conveying section is then folded downward by the front sprocket (8) and enters the garlic seed planting section from top to bottom. The lower end of the garlic seed planting section is folded by the lower front sprocket (9). The garlic seed anti-falling cover (6) covers the garlic seed planting section to confine the garlic seeds within the garlic seed anti-falling cover (6) and prevent the garlic seeds from slipping through the gap between the inner wall of the garlic seed anti-falling cover (6) and the composite seed spoon (4). The lower end of the garlic seed anti-falling cover (6) corresponding to the lower end of the garlic seed planting section is the garlic seed discharge port (10), and is provided with a garlic seed metering device linkage structure for transmission connection with the driving device; characterized in that: The composite seed spoon (4) includes a seed selection spoon (4-2) and a garlic receiving guide plate (4-1). The cavity of the seed selection spoon (4-2) can hold one garlic seed. In the garlic seed picking section, the opening of the seed selection spoon (4-2) faces the rear. The garlic receiving guide plate (4-1) is located below and behind the seed selection spoon (4-2). Its upper surface is the garlic seed receiving surface. The garlic seed receiving surface smoothly transitions to the lower inner wall of the cavity of the seed selection spoon (4-2). The garlic seed receiving surface slopes downward from the rear end to the front end to form a garlic seed introduction channel, which introduces the garlic seed into the cavity of the seed selection spoon (4-2). The seed-taking structure is located at the junction of the garlic seed picking section and the garlic seed box (5). The seed-taking structure includes a seed-taking cavity (20) and a garlic seed picking section that cooperates with the seed-taking cavity (20). The gap between the inner wall of the seed-taking cavity (20) and the composite seed spoon (4) should not allow the garlic seed to slip. The upper end of the seed-taking cavity is connected to the bottom of the garlic seed box (5). The seed-taking spoon (4-2) in the seed-taking structure completes the action of selecting a garlic seed.

2. The garlic seed metering device for a garlic planter according to claim 1, characterized in that: The back of the composite seed spoon (4) is a garlic seed tray (4-3) formed by the rear end face of the seed selection spoon (4-2) and the garlic receiving guide plate (4-1), so as to receive the garlic seeds falling from the seed selection spoon (4-2) above in the garlic seed falling protection cover (6).

3. A garlic seed meter for a garlic planter according to claim 1, wherein: The linkage structure of the garlic seed metering device is a hub connection structure: the inner hole of the lower front sprocket (9) in each garlic seed metering device is fixedly connected to the bushing (14), and the inner hole of the bushing (14) is a transmission hole with a polygonal cross section.

4. A garlic seed meter for a garlic planter according to any one of claims 1 to 3, characterized in that: The garlic seed drop prevention cover (6) is fixedly connected to the planting mechanism frame (2); in the garlic conveying chain support structure, there are four sprockets rotatably connected to the planting mechanism frame (2), namely the rear sprocket (7), the front sprocket (8), the lower front sprocket (9) and the lower rear sprocket (13), so as to support the garlic conveying chain in a slanted quadrilateral shape; in order to reduce the height of the annular garlic conveying chain transmission connection structure, the garlic seed planting section is inclined from top to bottom and backward, thereby reducing the space occupied at the bottom of the garlic planter and making the garlic planter smaller; the garlic seed picking section is inclined from bottom to top and forward.

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