Asparagus lettuce seeder

Abstract

The asparagus lettuce seeder comprises a machine body support, the machine body support comprises a supporting platform, a walking motor and walking wheels, the walking motor and the walking wheels are both connected with the supporting platform, and the walking motor is used for driving the walking wheels to move; the furrowing mechanism comprises a furrowing cutter and a furrowing driving assembly, the furrowing cutter is connected with the furrowing driving assembly, and the furrowing driving assembly can drive the furrowing cutter to ascend or descend so as to furrow soil to form a groove; the irrigation mechanism comprises a water tank and a water outlet pipe, the supporting platform bears the water tank, and the water outlet pipe communicates with the water tank; the sowing mechanism comprises a sowing box, a sowing disc and a sowing driving assembly, the sowing disc is rotationally connected to the bottom of the sowing box, seed outlet holes are formed in the bottom of the sowing box, open holes are formed in the sowing disc, and the sowing driving assembly can drive the sowing disc to rotate; and the soil covering mechanism can push the heaped soil on the two sides of the groove back into the groove. The asparagus lettuce seeder integrates ditching, irrigation, seeding and soil covering, so that the manpower demand is reduced.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a lettuce planter. Background Technology

[0002] Lettuce is a common vegetable, rich in nutrients and delicious in taste, making it a popular choice. However, lettuce planting requires significant human resources. A large number of seeds are sown, and the planting process is complex and labor-intensive. Furrowing, ridging, and covering with soil require considerable effort, and the ridges need to be leveled, placing a considerable strain on the growers' physical strength. Currently, there is a significant lack of mechanized lettuce planting technology, often requiring a combination of manual labor and machinery, resulting in low efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a lettuce planter that solves the problem of low efficiency caused by the need for manual labor and machinery in existing lettuce planting.

[0004] The technical solution of this utility model is: a lettuce planter, comprising...

[0005] The machine body frame includes a support platform, a walking motor, and walking wheels. The walking motor and the walking wheels are both connected to the support platform, and the walking motor is used to drive the walking wheels to move.

[0006] A trenching mechanism is located at the front of the support platform. The trenching mechanism includes a trenching blade and a trenching drive assembly. The trenching drive assembly is connected to the support platform, and the trenching blade is connected to the trenching drive assembly. The trenching drive assembly can drive the trenching blade to rise or fall to achieve trenching in the soil.

[0007] An irrigation mechanism is located in the middle of the support platform. The irrigation mechanism includes a water tank and a water outlet pipe. The support platform supports the water tank, and the water outlet pipe is connected to the water tank. The water outlet pipe is equipped with a solenoid valve.

[0008] The sowing mechanism is located in the middle of the support platform. The sowing mechanism includes a sowing box, a sowing tray, and a sowing drive assembly. The sowing box and the sowing drive assembly are both connected to the support platform. The sowing tray is rotatably connected to the bottom of the sowing box. The bottom of the sowing box is provided with a seed outlet hole. The sowing tray is provided with an opening that can be aligned with the seed outlet hole. The sowing drive assembly can drive the sowing tray to rotate.

[0009] The soil covering mechanism, wherein the seeding mechanism is located at the tail of the support platform, is capable of pushing the soil piled on both sides of the trench back into the trench.

[0010] The control module is electrically connected to the walking motor, the trenching drive assembly, the solenoid valve, and the seeding drive assembly.

[0011] Furthermore, the trenching drive assembly includes a trenching motor, a mounting frame, a first sprocket, a second sprocket, a transmission chain, a first lead screw, a sun gear, and a connecting rod;

[0012] The trenching motor is connected to the support platform, the output end of the trenching motor is connected to the first sprocket, the mounting frame is connected to the support platform, the first lead screw is rotatably connected to the mounting frame, the second sprocket is connected to the first lead screw, the transmission chain meshes with the first sprocket and the second sprocket, the sun gear is movably connected to the mounting frame, the first lead screw meshes with the sun gear, the connecting rod is eccentrically connected to the sun gear, and the trenching cutter is connected to the connecting rod.

[0013] Furthermore, the irrigation mechanism also includes a water level sensor located inside the water tank, and the water level sensor is electrically connected to the control module.

[0014] Furthermore, the seeding drive assembly includes a seeding motor, a second lead screw, a first gear, and a second gear. The seeding motor is connected to the support platform, and the output end of the seeding motor is connected to the second lead screw. The first gear meshes with the thread of the second lead screw, and the second gear meshes with the first gear. The seeding disc has teeth on its outer circumference, and the teeth mesh with the second gear.

[0015] Furthermore, the lettuce planter also includes a self-priming gantry frame, which is located in the middle of the support platform. The self-priming gantry frame includes a fixed frame, a sliding motor, a third lead screw, a slider, a first connecting rod, a second connecting rod, a water pipe fixing seat, and a water suction pipe. The fixed frame is connected to the support platform, the sliding motor is connected to the fixed frame, and the output end of the sliding motor is connected to the third lead screw. The slider is movably connected to the third lead screw. One end of the first connecting rod is movably connected to the slider, and the other end is movably connected to the water pipe fixing seat. One end of the second connecting rod is movably connected to the fixed frame, and the other end is movably connected to the water pipe fixing seat. The first connecting rod is located above the second connecting rod. The water suction pipe is connected to the water pipe fixing seat, one end of the water suction pipe is connected to the water tank, and the other end is used to connect to an external water storage tank. A water pump is provided on the water suction pipe, and the water pump and the sliding motor are electrically connected to the control module respectively.

[0016] Furthermore, the soil covering mechanism includes a stabilizing beam and a soil covering assembly. The stabilizing beam is connected to the supporting platform, and the soil covering assembly is connected to the stabilizing beam. The soil covering assembly is capable of pushing the soil piled on both sides of the trench into the trench.

[0017] Furthermore, the soil covering assembly includes two soil covering discs, which are rotatably connected to the stabilizing beam, and the two soil covering discs are at an angle of 45°-120°.

[0018] Furthermore, the lettuce planter also includes a soil testing mechanism located in the middle of the support platform. The soil testing mechanism includes a lifting component and a soil probe. The lifting component is connected to the support platform, and the soil probe is connected to the lifting component. The lifting component is used to drive the soil probe to rise or fall.

[0019] Furthermore, the lifting assembly includes a slide rail, a lifting block, and a lifting motor. The slide rail and the lifting motor are respectively connected to the support platform. The output end of the lifting motor is connected to the lifting block, and the soil probe is connected to the lifting block.

[0020] Furthermore, the lettuce planter also includes a fertilization mechanism located at the rear of the support platform. The fertilization mechanism includes a fertilizer tank and a spray pump. The spray pump is connected to the control module and is connected to the fertilizer tank via a pipeline.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] This utility model of a lettuce planter integrates ditching, irrigation, sowing, and soil covering into one unit, mimicking the traditional sowing operation method to ensure the feasibility of lettuce sowing. At the same time, it compactly distributes all the working mechanisms required for sowing into one unit, which can realize the functions of ditching, fertilizing, irrigating, sowing, and soil covering. Compared with the traditional sowing method, it is more efficient, faster, and more convenient.

[0023] This utility model of a lettuce planter, based on the complex characteristics of the lettuce planting environment, is equipped with various electronic components such as soil probes to monitor values ​​such as temperature, humidity, and soil pH, so as to provide targeted irrigation and fertilization to ensure the growth of lettuce seeds.

[0024] This utility model of a lettuce planter can adjust the speed of the sowing mechanism, furrowing mechanism, and other mechanisms according to the different sowing requirements of different fields. The sowing amount can be adjusted by adjusting the motor speed, and the watering method can be freely switched between irrigation and drip irrigation by adjusting the opening of the solenoid valve. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of the lettuce planter of this utility model.

[0026] Figure 2 This is a structural schematic diagram of the lettuce planter of this utility model from another perspective.

[0027] Figure 3 This is a schematic diagram of the structure of the body support of this utility model.

[0028] Figure 4 This is a schematic diagram of the trenching mechanism of this utility model.

[0029] Figure 5 This is a schematic diagram of the irrigation mechanism of this utility model.

[0030] Figure 6 This is a schematic diagram of the sowing mechanism of this utility model.

[0031] Figure 7 This is a schematic diagram of the soil covering mechanism of this utility model.

[0032] Figure 8 This is a schematic diagram of the structure of the self-priming gantry frame of this utility model.

[0033] Figure 9 This is a schematic diagram of the soil testing mechanism of this utility model.

[0034] Figure 10 This is a schematic diagram of the fertilization mechanism of this utility model.

[0035] 1. Body frame; 11. Support platform; 12. Walking wheels;

[0036] 2. Trenching mechanism; 21. Trenching cutter; 22. Trenching motor; 23. Mounting frame; 24. First sprocket; 25. Second sprocket; 26. Transmission chain; 27. First lead screw; 28. Sun gear; 29. ​​Connecting rod.

[0037] Irrigation mechanism 3, water tank 31, water outlet pipe 32;

[0038] Seeding mechanism 4, seed box 41, seed tray 42, seeding motor 43, second lead screw 44, first gear 45, second gear 46;

[0039] Soil covering mechanism 5, stabilizing beam 51, soil covering disc 52;

[0040] 6. Self-priming gantry frame; 61. Fixed frame; 62. Sliding motor; 63. Third lead screw; 64. Slider; 65. First connecting rod; 66. Second connecting rod; 67. Water pipe fixing seat;

[0041] 7. Soil testing equipment; 71. Soil probe; 72. Lifting assembly;

[0042] Fertilization mechanism 8, fertilizer tank 81, spray pump 82. Detailed Implementation

[0043] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0045] Lettuce planting requires a significant amount of human resources, involving a large number of seeds and a complex planting process. The labor intensity is high, with furrowing, ridging, and soil covering requiring considerable effort, and the ridges need to be leveled, posing a significant challenge to the physical strength of the growers. Currently, there are many technological gaps in mechanized lettuce planting, often requiring a combination of manual labor and machinery, resulting in low efficiency. To address these technical problems, this application provides a lettuce planter.

[0046] In some embodiments, such as Figures 1-10 As shown, a lettuce planter is provided, comprising,

[0047] The machine body support 1 includes a support platform 11, a walking motor and walking wheels 12. The walking motor and the walking wheels 12 are both connected to the support platform 11. The walking motor is used to drive the walking wheels 12 to move.

[0048] The trenching mechanism 2 is located at the front of the support platform 11. The trenching mechanism 2 includes a trenching blade 21 and a trenching drive assembly. The trenching drive assembly is connected to the support platform 11, and the trenching blade 21 is connected to the trenching drive assembly. The trenching drive assembly can drive the trenching blade 21 to rise or fall, so as to trench the soil and form a trench.

[0049] Irrigation mechanism 3, located in the middle of support platform 11, includes water tank 31 and water outlet pipe 32. Support platform 11 supports water tank 31, water outlet pipe 32 is connected to water tank 31, and water outlet pipe 32 is equipped with solenoid valve.

[0050] The sowing mechanism 4 is located in the middle of the support platform 11. The sowing mechanism 4 includes a sowing box 41, a sowing tray 42, and a sowing drive assembly. The sowing box 41 and the sowing drive assembly are both connected to the support platform 11. The sowing tray 42 is rotatably connected to the bottom of the sowing box 41. The bottom of the sowing box 41 is provided with a seed outlet hole. The sowing tray 42 is provided with an opening that can be aligned with the seed outlet hole. The sowing drive assembly can drive the sowing tray 42 to rotate.

[0051] The soil covering mechanism 5, the sowing mechanism 4 is located at the tail of the support platform 11, and the soil covering mechanism 5 can push the soil piled on both sides of the trench back into the trench.

[0052] The control module is electrically connected to the walking motor, the trenching drive assembly, the solenoid valve, and the seeding drive assembly.

[0053] The control module starts the walking motor, causing the lettuce planter to move; the control module also starts the ditching drive assembly, which drives the ditching blades 21 to open furrows in the soil, forming trenches; the control module activates the solenoid valve, allowing water from the water tank 31 to irrigate the trenches through the outlet tank 31; the control module then starts the sowing drive assembly, which rotates the sowing disc 42, causing seeds from the sowing box 41 to fall into the trenches through the seed outlet and the openings on the sowing disc 42; as the lettuce planter moves, the soil covering mechanism 5 at the rear of the support platform 11 pushes the soil piled on both sides of the trenches back into the trenches. This lettuce planter integrates ditching, irrigation, sowing, and soil covering into one unit, and its automatic operation is controlled by the control module, reducing manpower requirements and improving sowing efficiency.

[0054] In some embodiments, such as Figure 4 As shown, the trenching drive assembly includes a trenching motor 22, a mounting bracket 23, a first sprocket 24, a second sprocket 25, a transmission chain 26, a first lead screw 27, a sun gear 28, and a connecting rod 29;

[0055] The trenching motor 22 is connected to the support platform 11, and the output end of the trenching motor 22 is connected to the first sprocket 24. The mounting frame 23 is connected to the support platform 11. The first lead screw 27 is rotatably connected to the mounting frame 23. The second sprocket 25 is connected to the first lead screw 27. The transmission chain 26 meshes with the first sprocket 24 and the second sprocket 25. The sun gear 28 is movably connected to the mounting frame 23. The first lead screw 27 meshes with the sun gear 28. The connecting rod 29 is eccentrically connected to the sun gear 28. The trenching cutter 21 is connected to the connecting rod 29.

[0056] During trenching operations, the control module controls the trenching motor 22 to start, which drives the first sprocket 24 to rotate. The first sprocket 24 drives the second sprocket 25 to rotate via the transmission chain 26. The rotation of the second sprocket 25 drives the first lead screw 27 to rotate, which drives the sun gear 28 to rotate. The sun gear 28 drives the connecting rod 29 to rotate, which drives the trenching cutter 21 to perform trenching operations on the soil.

[0057] In some embodiments, the trenching cutter 21 is in the shape of a triangular pyramid to excavate a V-shaped trench.

[0058] In some embodiments, three grooving cutters 21 are spaced apart on the connecting rod 29, which can cut three grooves at a time.

[0059] In some embodiments, the trenching drive assembly includes a trenching motor 22, a sun gear 28, and a connecting rod 29. The output end of the trenching motor 22 is connected to the sun gear 28, and the connecting rod 29 is eccentrically connected to the sun gear 28. The trenching motor 22 drives the sun gear 28 to rotate, the sun gear 28 drives the connecting rod 29 to rotate, and the connecting rod 29 drives the trenching cutter 21 to perform trenching. As long as trenching can be achieved, the driving method of the trenching cutter 21 is not limited.

[0060] In some embodiments, the outlet pipe 32 is aligned with the trench, and the irrigation flow rate can be controlled by controlling the opening of the solenoid valve.

[0061] In some embodiments, the irrigation mechanism 3 further includes a water level sensor located inside the water tank 31 and electrically connected to the control module. When the water level in the water tank 31 drops to a preset level, the water level sensor sends a water replenishment signal to the control module to remind it to replenish water.

[0062] In some embodiments, such as Figure 8As shown, the lettuce planter also includes a self-priming gantry frame 6, which is located in the middle of the support platform 11. The self-priming gantry frame 6 includes a fixed frame 61, a sliding motor 62, a third lead screw 63, a slider 64, a first connecting rod 65, a second connecting rod 66, a water pipe fixing seat 67, and a water suction pipe. The fixed frame 61 is connected to the support platform 11, the sliding motor 62 is connected to the fixed frame 61, the output end of the sliding motor 62 is connected to the third lead screw 63, and the slider 64 is movably connected to the third lead screw 63. One end of a connecting rod 65 is movably connected to the slider 64, and the other end is movably connected to the water pipe fixing seat 67. One end of the second connecting rod 66 is movably connected to the fixing frame 61, and the other end is movably connected to the water pipe fixing seat 67. The first connecting rod 65 is located above the second connecting rod 66. The water suction pipe is connected to the water pipe fixing seat 67. One end of the water suction pipe is connected to the water tank 31, and the other end is used to connect to an external water storage tank. A water pump is provided on the water suction pipe. The water pump and the sliding motor 62 are electrically connected to the control module respectively.

[0063] After receiving a water replenishment signal, the control module controls the seeder to proceed to the reservoir for water replenishment. Once the seeder reaches the vicinity of the reservoir, the control module starts the sliding motor 62, which drives the third lead screw 63 to rotate. The rotation of the third lead screw 63 moves the slider 64, which in turn moves the first connecting rod 65. The movement of the first connecting rod 65 then moves the water pipe fixing seat 67. For example, when the slider 64 moves forward, the first connecting rod 65 lowers the water pipe fixing seat 67, allowing the suction pipe to enter the reservoir. The control module then starts the water pump to replenish the water tank 31. After water replenishment, the slider 64 moves backward, and the first connecting rod 65 raises the water pipe fixing seat to its original position. During this process, the second connecting rod 66 moves along with the water pipe fixing seat 67, and the first and second connecting rods together limit the travel of the water pipe fixing seat 67. When the water level in the water tank 31 drops to the preset level, the water level sensor sends a water replenishment signal to the control module, reminding it to replenish water. The control module then controls the seeder to move to the vicinity of the reservoir for water replenishment.

[0064] In some embodiments, the lettuce planter also includes a positioning system for planning the working path and watering path.

[0065] In some embodiments, such as Figure 6As shown, the seeding drive assembly includes a seeding motor 43, a second lead screw 44, a first gear 45, and a second gear 46. The seeding motor 43 is connected to the support platform 11, and the output end of the seeding motor 43 is connected to the second lead screw 44. The first gear 45 is threadedly engaged with the second lead screw 44, and the second gear 46 is engaged with the first gear 45. The seeding disc 42 has teeth on its outer circumference, and the teeth are engaged with the second gear 46.

[0066] During operation, the control module controls the sowing motor 43 to work. The sowing motor 43 drives the second lead screw 44 to rotate, the second lead screw 44 drives the first gear 45 to rotate, the first gear 45 drives the second gear 46 to rotate, and the second gear 46 drives the sowing disc 42 to rotate. During the rotation of the sowing disc 42, when the opening of the sowing disc 42 is aligned with the seed outlet hole of the sowing box 41, the seeds can fall into the groove. By controlling the speed of the sowing motor 43, the sowing amount can be controlled.

[0067] In some embodiments, the seeding drive assembly includes a seeding motor 43, which is fixed to the support platform 11. The output end of the seeding motor 43 is directly connected to the seeding disc 42. The seeding motor 43 can directly drive the seeding disc 42 to rotate. The arrangement of the seeding drive mechanism is not limited here.

[0068] In some embodiments, such as Figure 7 As shown, the soil covering mechanism 5 includes a stabilizing beam 51 and a soil covering assembly. The stabilizing beam 51 is connected to the supporting platform 11, and the soil covering assembly is connected to the stabilizing beam 51. The soil covering assembly can push the soil piled on both sides of the trench into the trench.

[0069] In some embodiments, the soil covering assembly includes two soil covering discs 52, which are rotatably connected to the stabilizing beam 51, and the two soil covering discs 52 are at an angle of 45°-120°.

[0070] As the seeder moves, the two covering discs 52 align with the soil piles on both sides of the furrow. As the seeder moves forward, the covering discs 52 come into contact with the soil piles, and under the action of friction, the covering discs 52 roll, pushing the soil piles back into the furrow, thus completing the covering. The angle between the two covering discs 52 can be 45°, 60°, 90°, or 120°, as long as it achieves the effect of gathering the soil piles into the furrow; there are no restrictions here.

[0071] In some embodiments, such as Figure 9As shown, the lettuce planter also includes a soil testing mechanism 7, which is located in the middle of the support platform 11. The soil testing mechanism 7 includes a lifting component 72 and a soil probe 71. The lifting component 72 is connected to the support platform 11, and the soil probe 71 is connected to the lifting component 72. The lifting component 72 is used to drive the soil probe 71 to rise or fall.

[0072] The soil probe 71 is raised and lowered by the lifting component 72, so that the soil probe 71 can be inserted into the soil to detect the soil temperature, humidity and pH, so as to control the amount of irrigation and fertilizer.

[0073] In some embodiments, the lifting assembly 72 includes a slide rail, a lifting block, and a lifting motor. The slide rail and the lifting motor are respectively connected to the support platform 11. The output end of the lifting motor is connected to the lifting block, and the soil probe 71 is connected to the lifting block.

[0074] In some embodiments, such as Figure 10 As shown, the lettuce planter also includes a fertilization mechanism 8, located at the rear of the support platform 11. The fertilization mechanism 8 includes a fertilizer tank 81 and a spray pump 82. The spray pump 82 is connected to the control module and is connected to the fertilizer tank 81 via a pipe. Appropriate nutrient solution can be prepared according to soil conditions and placed in the fertilizer tank 81. The control module controls the spray pump 82 to perform the fertilization operation.

[0075] In some embodiments, the control module is an STM32F407ZGT6 controller, the water pump is a 12V water pump, the solenoid valve is a 12V solenoid valve, and the positioning system is a BDS positioning system.

[0076] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A lettuce planter, characterized in that, include, The machine body frame includes a support platform, a walking motor, and walking wheels. The walking motor and the walking wheels are both connected to the support platform, and the walking motor is used to drive the walking wheels to move. A trenching mechanism is located at the front of the support platform. The trenching mechanism includes a trenching blade and a trenching drive assembly. The trenching drive assembly is connected to the support platform, and the trenching blade is connected to the trenching drive assembly. The trenching drive assembly can drive the trenching blade to rise or fall to achieve trenching in the soil. An irrigation mechanism is located in the middle of the support platform. The irrigation mechanism includes a water tank and a water outlet pipe. The support platform supports the water tank, and the water outlet pipe is connected to the water tank. The water outlet pipe is equipped with a solenoid valve. The sowing mechanism is located in the middle of the support platform. The sowing mechanism includes a sowing box, a sowing tray, and a sowing drive assembly. The sowing box and the sowing drive assembly are both connected to the support platform. The sowing tray is rotatably connected to the bottom of the sowing box. The bottom of the sowing box is provided with a seed outlet hole. The sowing tray is provided with an opening that can be aligned with the seed outlet hole. The sowing drive assembly can drive the sowing tray to rotate. The soil covering mechanism, wherein the seeding mechanism is located at the tail of the support platform, is capable of pushing the soil piled on both sides of the trench back into the trench. The control module is electrically connected to the walking motor, the trenching drive assembly, the solenoid valve, and the seeding drive assembly.

2. The lettuce planter according to claim 1, characterized in that, The trenching drive assembly includes a trenching motor, a mounting frame, a first sprocket, a second sprocket, a transmission chain, a first lead screw, a sun gear, and a connecting rod; The trenching motor is connected to the support platform, the output end of the trenching motor is connected to the first sprocket, the mounting frame is connected to the support platform, the first lead screw is rotatably connected to the mounting frame, the second sprocket is connected to the first lead screw, the transmission chain meshes with the first sprocket and the second sprocket, the sun gear is movably connected to the mounting frame, the first lead screw meshes with the sun gear, the connecting rod is eccentrically connected to the sun gear, and the trenching cutter is connected to the connecting rod.

3. The lettuce planter according to claim 1, characterized in that, The irrigation mechanism also includes a water level sensor located inside the water tank, which is electrically connected to the control module.

4. The lettuce planter according to claim 1, characterized in that, The seeding drive assembly includes a seeding motor, a second lead screw, a first gear, and a second gear. The seeding motor is connected to the support platform, and the output end of the seeding motor is connected to the second lead screw. The first gear meshes with the thread of the second lead screw, and the second gear meshes with the first gear. The seeding disc has teeth on its outer circumference, and the teeth mesh with the second gear.

5. The lettuce planter according to claim 1, characterized in that, It also includes a self-priming gantry frame, which is located in the middle of the support platform. The self-priming gantry frame includes a fixed frame, a sliding motor, a third lead screw, a slider, a first connecting rod, a second connecting rod, a water pipe fixing seat, and a suction pipe. The fixed frame is connected to the support platform, the sliding motor is connected to the fixed frame, and the output end of the sliding motor is connected to the third lead screw. The slider is movably connected to the third lead screw. One end of the first connecting rod is movably connected to the slider, and the other end is movably connected to the water pipe fixing seat. One end of the second connecting rod is movably connected to the fixed frame, and the other end is movably connected to the water pipe fixing seat. The first connecting rod is located above the second connecting rod. The suction pipe is connected to the water pipe fixing seat. One end of the suction pipe is connected to the water tank, and the other end is used to connect to an external water storage tank. A water pump is provided on the suction pipe. The water pump and the sliding motor are electrically connected to the control module, respectively.

6. The lettuce planter according to claim 1, characterized in that, The soil covering mechanism includes a stabilizing beam and a soil covering assembly. The stabilizing beam is connected to the supporting platform, and the soil covering assembly is connected to the stabilizing beam. The soil covering assembly is capable of pushing the soil piled on both sides of the trench into the trench.

7. The lettuce planter according to claim 6, characterized in that, The soil covering assembly includes two soil covering discs, which are rotatably connected to the stabilizing beam, and the two soil covering discs are at an angle of 45°-120°.

8. The lettuce planter according to claim 1, characterized in that, It also includes a soil testing mechanism, which is located in the middle of the support platform. The soil testing mechanism includes a lifting component and a soil probe. The lifting component is connected to the support platform, and the soil probe is connected to the lifting component. The lifting component is used to drive the soil probe to rise or fall.

9. The lettuce planter according to claim 8, characterized in that, The lifting assembly includes a slide rail, a lifting block, and a lifting motor. The slide rail and the lifting motor are respectively connected to the support platform. The output end of the lifting motor is connected to the lifting block, and the soil probe is connected to the lifting block.

10. The lettuce planter according to claim 1, characterized in that, It also includes a fertilization mechanism located at the rear of the support platform. The fertilization mechanism includes a fertilizer tank and a spray pump. The spray pump is connected to the control module and is connected to the fertilizer tank through a pipeline.

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