A micro tiller rotary tiller device with profiling function

Abstract

The present application relates to the field of agricultural machinery, and discloses a micro ploughing machine rotary plough device with profiling function, which comprises a driving part, one end of the driving part is connected with a fertilizing part, the bottom center of the fertilizing part is provided with a transmission part, and the two sides of the transmission part are respectively connected with a first rotary plough part and a second rotary plough part; the first rotary plough part and the second rotary plough part are driven by the driving part to carry out rotary ploughing on tea garden land; the transmission part is used for transmitting power between the driving part and the first rotary plough part and the second rotary plough part; through the cooperation of the first rotary plough part, the transmission part, the fertilizing part, the driving part and the second rotary plough part, the present application can efficiently complete the ploughing and soil preparation work on complex and irregular low-lying land or slope, heavy soil texture tea garden, and can carry out fertilization during rotary ploughing, thereby meeting the ploughing requirements of people on tea gardens.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, and specifically to a rotary tillage device for a micro-tiller with contour-following function. Background Technology

[0002] my country is the world's largest tea-producing country, with tea gardens covering about one-third of the world's total area, and its tea production ranks first globally. However, tea garden cultivation may encounter various problems, especially in terms of management, including land preparation, fertilization, and irrigation. Poor land preparation can lead to uneven soil and overgrown weeds, affecting the normal growth of tea trees and the quality of tea. Moreover, there are currently no suitable rotary tillage devices widely used in production for low-lying areas and slopes in tea gardens. Common tea garden tillage machinery includes traditional plows and tillage machines, which use single tools for soil treatment, resulting in time-consuming, labor-intensive, and inefficient processes.

[0003] Among them, the patent document with publication number CN117882512A discloses a garden tillage machine with slope contouring function, which includes a support frame, drive handle, rotating shaft, first universal joint, second universal joint, rotary tillage roller, adjusting plate, telescopic component, lead screw, transmission shaft, transmission wheel, belt pulley, etc. By adjusting the setting of the adjusting components, the angle of the two rotary tillage rollers can be adjusted to meet the rotary tillage and land preparation work on different slopes. Moreover, the rotary tillage rollers can also be buffered to prevent damage during operation. This solves the problem that the rotary tillage rollers in existing equipment are usually installed at a fixed angle, which makes it impossible to meet the rotary tillage and land preparation work on different slopes, thereby improving the efficiency of tillage and land preparation work.

[0004] However, the aforementioned existing technologies still require manual operation to guide the machine forward. The operation of garden tillers with slope-following functions is relatively complex, requiring operators to have higher skill levels and experience. Although the machine's adaptability to complex terrain has been improved, some terrain limitations still exist. For example, it may not be effective on overly steep or irregular terrain. Moreover, existing micro-tillers can only perform rotary tillage and cannot fertilize, thus failing to meet people's needs. Summary of the Invention

[0005] The purpose of this invention is to provide a rotary tillage device for a micro-tiller with contour-following function, which solves the following technical problems: how to efficiently complete the tillage and preparation work in tea gardens with complex terrain, irregular depressions or slopes, and heavy clay soil, and how to apply fertilizer during rotary tillage.

[0006] The objective of this invention can be achieved through the following technical solution: a rotary tiller device with contour-following function, comprising: a drive component, one end of which is connected to a fertilizer component, a transmission component is provided at the bottom center of the fertilizer component, and a first rotary tiller and a second rotary tiller are respectively connected to both sides of the transmission component.

[0007] The first and second rotary tillage components are driven by the drive component to perform rotary tillage on the tea garden land; the transmission component is used to transmit power between the drive component and the first and second rotary tillage components.

[0008] The fertilization component provides a limiting support at one end of the drive component between the first rotary tillage component, the transmission component, and the second rotary tillage component. The fertilization component can also fertilize the tea garden while the first rotary tillage component and the second rotary tillage component are rotary tilling.

[0009] The drive component is used to provide driving force for the operation of the first rotary tillage component, the transmission component, and the second rotary tillage component.

[0010] As a preferred embodiment of the present invention: both the first rotary tillage component and the second rotary tillage component include a first hydraulic cylinder, a universal joint is fixedly connected to the bottom end of the first hydraulic cylinder, a rotary tillage blade is fixedly connected to one end of the universal joint, a rotary tillage blade is fixedly mounted on the outer surface of the rotary tillage blade, and connecting arms are rotatably sleeved on both ends of the outer surface of the rotary tillage blade.

[0011] As a preferred embodiment of the present invention: the transmission component includes a protective housing and a power transmission rod. An electric actuator is symmetrically rotatably connected to the upper outer surface of the protective housing. A first power transmission shaft is rotatably engaged in the middle of the protective housing. A first helical gear is fixedly installed on the outer surface of the first power transmission shaft. A helical gear shaft is rotatably engaged inside the protective housing and below the first helical gear. A helical gear transmission column is rotatably engaged inside the bottom end of the protective housing. Universal drive shafts are fixedly installed at both ends of the helical gear transmission column. First universal hinges are provided at the ends of both the protective housing and the power transmission rod. The protective housing and the power transmission rod are rotatably connected via the first universal hinges.

[0012] As a preferred embodiment of the present invention: the fertilization component includes a limiting top plate, a fertilizer box symmetrically arranged at one end of the limiting top plate, a telescopic sleeve symmetrically and rotatably installed at one end of the bottom surface of the limiting top plate, a soil covering plate rotatably connected to the bottom end of the telescopic sleeve, a fertilizer discharge pipe evenly arranged on the bottom surface of the soil covering plate, a corrugated conduit evenly arranged at the bottom end of the fertilizer box and connected to the top end of the fertilizer discharge pipe, a second power transmission shaft rotatably engaged at the middle of one end of the limiting top plate, a helical toothed rod rotatably engaged at the bottom of one end of the fertilizer box, a groove evenly formed on the inner outer surface of the fertilizer box at one end of the helical toothed rod, a limiting rod arranged at the middle of the bottom surface of the soil covering plate, a second universal hinge fixedly connected to one end of the second power transmission shaft, and hinge seats evenly arranged on the bottom surface of the limiting top plate.

[0013] As a preferred embodiment of the present invention: the driving component includes a chassis, a gearbox is movably mounted in the center of the chassis, a drive shaft is rotatably engaged in the middle of the gearbox, a drive motor rotatably connected to the drive shaft is fixedly mounted at one end of the chassis, transmission wheels are provided on both sides of the chassis, support wheels are provided on both sides of the chassis, tracks are sleeved on the outer surface of the support wheels, and a second hydraulic cylinder is fixedly mounted in the center of the top surface of the chassis and fixedly connected to the top of the gearbox.

[0014] As a preferred embodiment of the present invention: the top of the first hydraulic cylinder and the electric push rod are rotatably connected to the bottom surface of the limiting top plate through a hinge seat; one end of the connecting arm is rotatably engaged with the side of the soil covering plate through a limiting rod; one end of the rotary tiller is rotatably connected to the helical gear transmission column through a universal drive shaft; the power transmission rod on one side of the protective shell is rotatably connected to one end of the second power transmission shaft through a first universal hinge at one end; and the power transmission rod on the other side of the protective shell is rotatably connected to one end of the drive shaft through a first universal hinge at one end.

[0015] As a preferred embodiment of the present invention: a second helical gear is fixedly installed at one end of the second power transmission shaft, and the second power transmission shaft is meshed with one end of the helical gear rod through the second helical gear at one end. The top end of the corrugated conduit is connected to the bottom end of the fertilizer box, and the groove on the outer surface of one end of the helical gear rod is aligned with the top end of the corrugated conduit. A sealing cover is slidably engaged at the top of the fertilizer box, and a tension spring is provided inside the telescopic sleeve.

[0016] As a preferred embodiment of the present invention: a second drive motor is provided on both sides of the inner side of the casing, and the transmission wheel is connected to the second drive motor on the side of the casing. The extension and retraction of the two sets of electric push rods will drive the angle of the two sets of rotary tillers to change between 150° and 180°. When the extension of the first hydraulic cylinder is 30mm, the maximum deflection angle of the rotary tillers is 30°.

[0017] The beneficial effects of this invention are:

[0018] (1) By changing the angle of the rotary tiller roller, the present invention can deform in both the horizontal and vertical directions according to the changes in the terrain. It can automatically adjust the angle and depth of the working parts according to the changes in the terrain, ensuring the consistency and stability of the operation effect. This adaptability is particularly important for hilly orchards, terraced fields and other sloping operations, which greatly improves the efficiency and flexibility of soil treatment, while saving time and labor costs. Users can complete the operation tasks faster, thereby increasing economic benefits. At the same time, due to the reduction of manual intervention and failure rate, maintenance costs and downtime are also reduced, further improving the overall economic benefits.

[0019] (2) The present invention can efficiently complete the tillage operation through the flexible rotary tillage shaft design. In complex terrain, irregular depressions or slopes, heavy soil texture and other working conditions, the device can still maintain high unit adaptability and ensure the quality of tillage operation. On the one hand, it automatically adjusts the working parts according to the changes in terrain, changing the original straight shaft to a V-shaped shaft to ensure that the working area can be fully covered. On the other hand, the use of tracked micro-tiller reduces the difficulty of operation, ensures the stability of machine operation, and saves time and labor costs.

[0020] (3) The present invention, through the coordinated operation of the first rotary tillage component, the transmission component, the fertilization component, the drive component and the second rotary tillage component, can efficiently complete the tillage operation of tea gardens with complex terrain, irregular depressions or slopes and heavy soil texture, and can also fertilize during rotary tillage, thus meeting people's needs for arable land in tea gardens. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the rotary tillage device of a micro-tiller;

[0023] Figure 2 This is a schematic diagram of the structure of the first rotary tillage component;

[0024] Figure 3 This is a cross-sectional structural diagram of the transmission component;

[0025] Figure 4 This is a schematic diagram of the top structure of the fertilizer application component;

[0026] Figure 5 This is a schematic diagram of the bottom structure of the fertilizer application component;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the drive component.

[0028] Figure Descriptions: 1. First rotary tiller component; 2. Transmission component; 3. Fertilizer application component; 4. Drive component; 5. Second rotary tiller component; 11. Connecting arm; 12. First hydraulic cylinder; 13. Rotary tiller blade; 14. Rotary tiller blade shaft; 15. Universal joint; 21. First helical gear; 22. Helical gear shaft; 23. Universal drive shaft; 24. Helical gear drive column; 25. First power drive shaft; 26. Power drive rod; 27. First universal hinge; 28. Electric push rod 29. Protective outer shell; 31. Corrugated duct; 32. Second power transmission shaft; 33. Helical gear; 34. Soil cover plate; 35. Groove; 36. Fertilizer box; 37. Limiting top plate; 38. Fertilizer discharge pipe; 39. Second universal hinge; 310. Telescopic sleeve; 311. Hinge seat; 312. Limiting rod; 41. Transmission wheel; 42. Drive shaft; 43. Gearbox; 44. Track; 45. Chassis; 46. Drive motor; 47. Support wheel. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-6 As shown, the present invention is a rotary tillage device for a micro-tiller with contour-following function, comprising: a drive component 4, a fertilizer application component 3 connected to one end of the drive component 4, a transmission component 2 disposed at the bottom center of the fertilizer application component 3, and a first rotary tillage component 1 and a second rotary tillage component 5 respectively connected to both sides of the transmission component 2.

[0031] The first rotary tillage component 1 and the second rotary tillage component 5 are driven by the drive component 4 to perform rotary tillage on the tea garden land; the transmission component 2 is used to transmit power between the drive component 4 and the first rotary tillage component 1 and the second rotary tillage component 5.

[0032] The fertilization component 3 provides a limiting support at one end of the drive component 4 between the first rotary tillage component 1, the transmission component 2, and the second rotary tillage component 5. The fertilization component 3 can also fertilize the tea garden when the first rotary tillage component 1 and the second rotary tillage component 5 are rotary tilling.

[0033] The drive component 4 is used to provide driving force for the operation of the first rotary tillage component 1, the transmission component 2, and the second rotary tillage component 5.

[0034] Both the first rotary tillage component 1 and the second rotary tillage component 5 include a first hydraulic cylinder 12. A universal joint 15 is fixedly connected to the bottom end of the first hydraulic cylinder 12. A rotary tillage blade 14 is fixedly connected to one end of the universal joint 15. A rotary tillage blade 13 is fixedly installed on the outer surface of the rotary tillage blade 14. A connecting arm 11 is rotatably sleeved on the outer surfaces of both ends of the rotary tillage blade 14.

[0035] The transmission component 2 includes a protective housing 29 and a power transmission rod 26. An electric actuator 28 is symmetrically rotatably connected to the upper outer surface of the protective housing 29. A first power transmission shaft 25 is rotatably engaged in the middle of the protective housing 29. A first helical gear 21 is fixedly installed on the outer surface of the first power transmission shaft 25. A helical gear shaft 22 is rotatably engaged inside the protective housing 29 and below the first helical gear 21. A helical gear transmission column 24 is rotatably engaged inside the bottom end of the protective housing 29. Universal drive shafts 23 are fixedly installed at both ends of the helical gear transmission column 24. A first universal hinge 27 is provided at the ends of both the protective housing 29 and the power transmission rod 26. The protective housing 29 and the power transmission rod 26 are rotatably connected through the first universal hinge 27.

[0036] The fertilization component 3 includes a limiting top plate 37. A fertilizer box 36 is symmetrically arranged at one end of the limiting top plate 37. A telescopic sleeve 310 is symmetrically and rotatably installed at one end of the bottom surface of the limiting top plate 37. A soil covering plate 34 is rotatably connected to the bottom end of the telescopic sleeve 310. Fertilizer discharge pipes 38 are evenly arranged on the bottom surface of the soil covering plate 34. Corrugated conduits 31 connected to the top end of the fertilizer discharge pipes 38 are evenly arranged on the bottom end of the fertilizer box 36. A second power transmission shaft 32 is rotatably engaged at the middle of one end of the limiting top plate 37. A helical toothed rod 33 is rotatably engaged at the bottom of one end of the fertilizer box 36. A groove 35 is evenly opened on the inner outer surface of the fertilizer box 36 at one end of the helical toothed rod 33. A limiting rod 312 is arranged at the middle of the bottom surface of the soil covering plate 34. A second universal hinge 39 is fixedly connected to one end of the second power transmission shaft 32. Hinge seats 311 are evenly arranged on the bottom surface of the limiting top plate 37.

[0037] The drive component 4 includes a housing 45, a gearbox 43 is movably mounted in the center of the housing 45, a drive shaft 42 is rotatably engaged in the middle of the gearbox 43, a drive motor 46 is fixedly mounted in one end of the housing 45 and rotatably connected to the drive shaft 42, transmission wheels 41 are provided on both sides of the housing 45, support wheels 47 are provided on both sides of the housing 45, a track 44 is sleeved on the outer surface of the support wheels 47, and a second hydraulic cylinder is fixedly mounted in the center of the top surface of the housing 45 and fixedly connected to the top of the gearbox 43.

[0038] The tops of the first hydraulic cylinder 12 and the electric push rod 28 are rotatably connected to the bottom surface of the limiting top plate 37 via a hinge seat 311, thereby enabling them to suspend and limit the first rotary tillage component 1 and the transmission component 2. One end of the connecting arm 11 is rotatably engaged with the side of the covering plate 34 via the limiting rod 312, allowing the covering plate 34 to rise, fall, and deflect along with the rotary tillage blade 14, thereby adapting and leveling the tilled soil. One end of the rotary tillage blade 14 is rotated via a universal drive shaft 23 and a helical gear drive column 24. The drive unit 4 drives the two sets of rotary tillers 14 to perform rotary tillage through the transmission unit 2. The power transmission rod 26 on one side of the protective shell 29 is rotatably connected to one end of the second power transmission shaft 32 through the first universal hinge 27 at one end. The power transmission rod 26 on the other side of the protective shell 29 is rotatably connected to one end of the drive shaft 42 through the first universal hinge 27 at one end. This allows the drive unit 4 to drive the two sets of helical gears 33 to rotate synchronously through the transmission unit 2, thereby performing synchronous fertilization.

[0039] A second helical gear is fixedly installed at one end of the second power transmission shaft 32 of the present invention. The second power transmission shaft 32 is connected to one end of the helical gear 33 through the second helical gear at one end, which can control the synchronous rotation of the two sets of helical gears 33. The top end of the corrugated conduit 31 is connected to the bottom end of the fertilizer box 36. The groove 35 on the outer surface of one end of the helical gear 33 is aligned with the top end of the corrugated conduit 31, so as to transport the fertilizer below. The top of the fertilizer box 36 is slidably engaged with the sealing cover, which can prevent the fertilizer inside the fertilizer box 36 from overflowing. The telescopic sleeve 310 is equipped with a tension spring, which can make the soil covering plate 34 deflect up and down to avoid rigid impact.

[0040] The present invention has a second drive motor installed on both sides of the internal casing 45, and the transmission wheel 41 is connected to the second drive motor on the side of the casing 45 to drive the track 44 to rotate. The telescopic movement of the two sets of electric push rods 28 will drive the two sets of rotary tillers 14 to change angles between 150° and 180°. When the extension of the first hydraulic cylinder 12 is 30mm, the maximum deflection angle of the rotary tiller 14 is 30°, so that rotary tillage can be carried out in tea gardens with different terrains, thus meeting people's needs.

[0041] The working principle of this invention is as follows: Before using the micro-tiller to perform rotary tillage on the tea garden, the overall height of the gearbox 43 is adjusted by controlling the second hydraulic cylinder to adapt to the adjustment requirements of the first rotary tillage component 1.

[0042] In this process, the drive motor 46 is first started to drive the drive shaft 42 to rotate, which in turn drives the power transmission rod 26 to rotate. At the same time, the power transmission rod 26 drives another set of power transmission rods 26 to rotate synchronously through the first power transmission shaft 25 inside the protective shell 29. The transmission component 2, which serves as the central connection between the first rotary tillage component 1, the drive component 4, and the second rotary tillage component 5, will bend and change shape as the gearbox 43 rises and falls, so as to adapt to the transmission requirements of different heights and angles. Therefore, when the first rotary tillage component 1 and the second rotary tillage component 5 are in contact with the ground, they will change with the terrain to avoid the phenomenon of different tillage depths caused by straight shaft drive.

[0043] When using a micro-tiller to perform rotary tillage in a tea garden, the operator needs to rotate and connect the front end of the limit plate 37 to the drive component 4, then connect the top end of the power transmission rod 26 on one side of the protective shell 29 to one end of the drive shaft 42 to ensure that its power is appropriate, and then check each component one by one to ensure that they are in good condition, safe and reliable, and ready for work.

[0044] Before driving component 4, the operator should first conduct a preliminary assessment of the surrounding working environment to ensure the continued operation of subsequent operations. Based on the actual field conditions and operational requirements, the operator should adjust the equipment's working parameters, such as tillage width, depression depth, and slope angle.

[0045] Then, the drive motor 46 is started to drive the drive shaft 42 to rotate. At the same time, the second drive motor is started to drive the support wheel 47 to rotate synchronously through the transmission wheel 41. The support wheel 47 will drive the track 44 to rotate, so that the drive component 4 as a whole starts to drag the fertilizer component 3 forward. At the same time, the drive shaft 42 will drive the first power transmission shaft 25 to rotate synchronously through the power transmission rod 26 connected to the end. The first power transmission shaft 25 will drive the helical gear shaft 22 connected at the bottom to rotate synchronously through the first helical gear 21 on the outer surface. At the same time, the helical gear shaft 22 will drive the helical gear transmission column 24 connected at the bottom to rotate synchronously. Therefore, the helical gear transmission column 24 will drive the two sets of rotary tillers 14 to rotate synchronously through the universal transmission shafts 23 at both ends. This will cause the rotary tillers 14 to drive the rotary tillers 13 on the outer surface to till the ground.

[0046] In the initial stage, the operator needs to accurately determine the rotary tillage position and assess the working environment, and appropriately adjust the height of the protective shell 29 and the angle between the first rotary tillage component 1 and the second rotary tillage component 5. When encountering a depression, the first hydraulic cylinder 12 retracts upward, causing one end of the rotary tillage blade 14 to rise at a certain angle, so that the rotary tillage blades 13 on the outer surface of the rotary tillage blade 14 can fully till the soil during operation. When encountering a slope, the electric push rod 28 retracts upward, causing the protective shell 29 to rise. At the same time, the protective shell 29 raises the ends of the two sets of rotary tillage blades 14, allowing the rotary tillage blades 13 to till the soil well, and the machine can smoothly pass through the slope. During the rotary tillage process, if fertilization is needed, fertilizer can be added to the fertilizer box 36. Then, when the drive component 4 is running, it will drive the second power transmission shaft 32 at one end to rotate synchronously through the power transmission rod 26. When the second power transmission shaft 32 rotates, it will drive the two sets of helical gears 33 connected at one end to rotate synchronously through the second helical gear, so that one end of the helical gear 33 rotates inside the fertilizer box 36. At the same time, the groove 35 on the outer surface of the end of the helical gear 33 will cause the fertilizer in the fertilizer box 36 to flip downward, so that the fertilizer is discharged into the fertilizer discharge pipe 38 through the corrugated conduit 31. The electric push rod 28 is pressed down into the soil after rotary tillage by the soil covering plate 34. Therefore, when the fertilizer discharge pipe 38 moves in the soil, it will discharge the fertilizer into the soil after rotary tillage, thereby achieving the effect of fertilization.

[0047] After the soil treatment work is completed in the entire tea garden, the tracked mini-tiller is turned off, the device is stopped, and necessary cleaning and maintenance are carried out to ensure the smooth progress of the next operation. After the soil treatment work is completed, the device is properly stored and awaits the start of the next operation.

[0048] Through this rotary tillage process, the device of this invention can efficiently complete the soil treatment work in tea gardens. It can not only achieve good rotary tillage results, but also reduce the frequency of rotary tillage and minimize damage to tea gardens. This soil treatment operation method causes little damage to tea gardens, reduces power consumption, and has high work efficiency, which can effectively solve the problem of poor operation quality of traditional rotary tillage equipment.

[0049] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A rotary tillage device for a micro-tiller with contour-following function, comprising: The driving component and the driving shaft inside the driving component are characterized in that one end of the driving component is connected to a fertilizing component, the fertilizing component includes a soil covering plate and a second power transmission shaft, fertilizer discharge pipes are evenly arranged on the bottom surface of the soil covering plate, a limit rod is provided in the middle of the bottom surface of the soil covering plate, a transmission component is provided at the bottom center of the fertilizing component, and a first rotary tillage component and a second rotary tillage component are respectively connected to both sides of the transmission component. The first and second rotary tillage components are driven by the drive component to perform rotary tillage on the tea garden land; the transmission component is used to transmit power between the drive component and the first and second rotary tillage components. The fertilization component provides a limiting support at one end of the drive component between the first rotary tillage component, the transmission component, and the second rotary tillage component. The fertilization component can also fertilize the tea garden while the first rotary tillage component and the second rotary tillage component are rotary tilling. The drive component is used to provide driving force for the operation of the first rotary tillage component, the transmission component, and the second rotary tillage component; Both the first rotary tillage component and the second rotary tillage component include a first hydraulic cylinder. A universal joint is fixedly connected to the bottom end of the first hydraulic cylinder. A rotary tillage blade is fixedly connected to one end of the universal joint. A rotary tillage blade is fixedly installed on the outer surface of the rotary tillage blade. Connecting arms are rotatably sleeved on the outer surfaces of both ends of the rotary tillage blade. The transmission component includes a protective housing and a power transmission rod. An electric actuator is symmetrically rotatably connected to the upper outer surface of the protective housing. A first power transmission shaft is rotatably engaged in the middle of the protective housing. A first helical gear is fixedly installed on the outer surface of the first power transmission shaft. A helical gear shaft is rotatably engaged inside the protective housing and below the first helical gear. A helical gear transmission column is rotatably engaged inside the bottom end of the protective housing. Universal drive shafts are fixedly installed at both ends of the helical gear transmission column. First universal hinges are provided at the ends of both the protective housing and the power transmission rod. The protective housing and the power transmission rod are rotatably connected via the first universal hinges. One end of the connecting arm is rotatably engaged with the side of the soil cover plate via a limiting rod. The power transmission rod on one side of the protective shell is rotatably connected to one end of the second power transmission shaft via a first universal hinge at one end. The power transmission rod on the other side of the protective shell is rotatably connected to one end of the drive shaft via a first universal hinge at one end.

2. The rotary tillage device for a micro-tiller with contour-following function according to claim 1, characterized in that, The fertilization component includes a limiting top plate, with fertilizer boxes symmetrically arranged at one end of the limiting top plate. Telescopic sleeves are symmetrically and rotatably installed at one end of the bottom surface of the limiting top plate. Corrugated conduits connected to the top of the fertilizer discharge pipe are evenly arranged at the bottom of the fertilizer box. A helical toothed rod is rotatably engaged at one end of the bottom of the fertilizer box. Grooves are evenly formed on the inner outer surface of the fertilizer box at one end of the helical toothed rod. A second universal hinge is fixedly connected to one end of the second power transmission shaft. Hinge seats are evenly arranged on the bottom surface of the limiting top plate.

3. A rotary tiller device with contour-following function according to claim 2, characterized in that, The drive component includes a chassis, a gearbox is movably mounted in the center of the chassis, a drive motor rotatably connected to the drive shaft is fixedly mounted at one end of the chassis, transmission wheels are provided on both sides of the chassis, support wheels are provided on both sides of the chassis, tracks are sleeved on the outer surface of the support wheels, and a second hydraulic cylinder is fixedly mounted in the center of the top surface of the chassis and fixedly connected to the top of the gearbox.

4. A rotary tiller device with contour-following function according to claim 3, characterized in that, The top of the first hydraulic cylinder and the electric push rod are rotatably connected to the bottom surface of the limiting top plate through a hinge seat, and one end of the rotary tiller blade is rotatably connected to the helical gear transmission column through a universal drive shaft.

5. A rotary tillage device for a micro-tiller with contour-following function according to claim 4, characterized in that, A second helical gear is fixedly installed at one end of the second power transmission shaft. The second power transmission shaft is connected to one end of the helical gear rod through the second helical gear at one end. The inside of the top of the corrugated conduit is connected to the bottom of the fertilizer box. The groove on the outer surface of one end of the helical gear rod is aligned with the top of the corrugated conduit. A sealing cover is slidably engaged on the top of the fertilizer box. A tension spring is installed inside the telescopic sleeve.

6. A rotary tiller device with contour-following function according to claim 5, characterized in that, The machine housing has a second drive motor installed on both sides. The transmission wheel is connected to the second drive motor on the side of the machine housing. The extension and retraction of the two sets of electric push rods will cause the angle of the two sets of rotary tillers to change between 150° and 180°. When the extension of the first hydraulic cylinder is 30mm, the maximum deflection angle of the rotary tillers is 30°.

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