Multi-functional combined mini-tiller

Abstract

The present application relates to the technical field of micro tiller, and discloses a multifunctional combined micro tiller, which comprises a machine body, a cutter shaft is installed at the bottom of the machine body, a plurality of rotary tillers are installed on the surface of the cutter shaft, and a flexible anti-blocking module is arranged above the rotary tillers; the flexible anti-blocking module comprises a rack guard plate fixed to the machine body; through the suspension design of the sectional assembly, the present application realizes the lightweight and multifunctional integration of the anti-blocking and anti-winding functions of the micro tiller, improves the operation convenience of the manual micro tiller, improves the use experience of different groups of people, helps to expand the application range of the micro tiller, the sectional assembly is vertically suspended between the rack guard plate and the cutter shaft, does not rotate synchronously with the cutter shaft, and only relies on the machine body vibration generated by the operation of the micro tiller to generate sectional swinging and mutual vibration between sections, so that an additional power source is not needed, the overall weight and operation load are not increased, and the lightweight requirement of the manual micro tiller is perfectly met.

Description

Technical Field

[0001] This invention relates to the field of micro-tiller technology, specifically a multi-functional combined micro-tiller. Background Technology

[0002] Mini tillers, as small manual agricultural machinery, are widely used in deep plowing, land preparation, and soil breaking operations in vegetable gardens, orchards, mountain terraces, and small plots of farmland. They are characterized by their compact structure, flexible operation, and strong adaptability. They are the core equipment for farmers, especially small-scale farmers, to carry out intensive farming. When operating a mini tiller, the machine needs to be manually operated so that the cutter shaft drives the rotary blades to penetrate the soil to complete cutting and tilling. The feel of the operation and the overall load of the machine directly affect the user experience. Especially for female and middle-aged and elderly farmers with weaker physical strength, the lightweight and easy operation of the equipment are the core usage requirements.

[0003] The rotary blades of a mini tiller need to continuously penetrate deep into the soil. Currently, most manual mini tillers on the market weigh between 30 and 45 kg, which is already quite heavy and requires a certain level of physical strength from the operator. In sticky and moist soil conditions, the soil easily adheres to and compacts layer by layer on the surface of the blade shaft and rotary blades, forming hard clumps. At the same time, weeds are pulled and entangled around the blade shaft and the base of the blades, forming thick clumps of grass. These clumps and grass clumps continuously increase the rotational resistance of the blade shaft, causing the overall working load to increase continuously. The already heavy manual equipment becomes heavier and heavier with use, which not only greatly increases the difficulty of operation, making it difficult for even adult men to operate stably for a long time, but also makes it impossible for women with weaker physical strength and middle-aged and elderly farmers to use it normally for a long time. In some cases, the sudden increase in load may even lead to loss of control or shutdown, posing a safety hazard.

[0004] Meanwhile, the continuous vibration generated during the operation of a mini tiller is unavoidable. Prolonged holding and operation further exacerbate the operator's physical exertion. The additional load from clumps and tangled grass, combined with vibration fatigue, significantly reduces operating comfort and safety. In existing technologies, some anti-clogging solutions improve the clogging problem by adding extra drive components and reinforcing the support structure. However, these methods significantly increase the overall weight and structural complexity of the machine, further increasing the operational burden, which contradicts the user requirements of lightweight and easy-to-operate manual mini tillers.

[0005] Existing solutions generally fail to meet the dual requirements of "lightweight operation" and "long-term anti-blocking", making them unsuitable for the actual use scenarios of manual tillers and severely limiting the target audience and operating efficiency of tillers.

[0006] Therefore, this invention proposes a multi-functional combined micro-tiller. Summary of the Invention

[0007] The purpose of this invention is to provide a multi-functional combined micro-tiller to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-functional combined micro-tiller, comprising a body, a blade shaft mounted at the bottom of the body, a plurality of rotary tillers mounted on the surface of the blade shaft, and a flexible anti-clogging module disposed above the rotary tillers; the flexible anti-clogging module includes a frame guard plate fixed to the body, and a plurality of segmented assemblies vertically suspended between the frame guard plate and the blade shaft, each segmented assembly being located within the gap between adjacent rotary tillers, the upper end of each segmented assembly being fixedly connected to the frame guard plate, and the lower end being offset from the blade shaft. When the micro-tiller is working, the blade shaft and rotary blades rotate and cut, generating vibrations in the machine body. The segmented assembly does not rotate synchronously with the blade shaft. Under the dual effects of machine body vibration and eccentric excitation, the segmented assembly produces segmented oscillations and inter-segment vibrations to suppress soil clumping and reduce soil adhesion layers on the blade shaft and rotary blades. At the same time, it disturbs and removes weeds entangled in the gaps between adjacent rotary blades. The segmented assembly remains flexible and loose as a whole, and does not have rigid collisions or motion interference with the rotary blades during the oscillation process.

[0009] Preferably, a cam that rotates synchronously with the cutter shaft is fixedly mounted on the surface of the cutter shaft, and the cam is an eccentric drive structure; a rotating seat is connected to the bottom of the segmented assembly, and the rotating seat is rotatably fitted onto the cutter shaft and abuts against the contour of the cam. When the cam rotates, it periodically pushes the rotating seat through the eccentric contour, so that the segmented assembly and the cutter shaft form the eccentric rotational engagement and generate eccentric oscillation.

[0010] Preferably, the segmented assembly is formed by connecting several independent sub-units in sequence, and adjacent sub-units can move relative to each other.

[0011] Preferably, the sub-unit is a link structure, and the segmented assembly is composed of several independent links connected in sequence, with the links being able to move relative to each other.

[0012] Preferably, the uppermost chain link is snapped and fixed to the frame guard plate, and the lowermost chain link is snapped and fixed to the rotating seat, so that the segmented assembly is suspended between the frame guard plate and the rotating seat without hindering the relative movement between the chain links and the overall swing.

[0013] Preferably, the subunit includes an anti-blocking column, and both the upper and lower ends of the anti-blocking column are provided with U-shaped connecting seats, and adjacent anti-blocking columns are connected to each other through the U-shaped connecting seats.

[0014] Preferably, the uppermost anti-blocking column is fixed to the frame guard plate by its upper U-shaped connecting seat, and the lowermost anti-blocking column is fixed to the rotating seat by its lower U-shaped connecting seat, so that each anti-blocking column can swing relative to each other without affecting the vibration and anti-blocking effect of the segmented assembly.

[0015] Preferably, both the upper and lower ends of the anti-blocking column are rotatably fitted with a rotating shaft, and the U-shaped connecting seat is fixedly installed on the corresponding rotating shaft.

[0016] Preferably, each anti-blocking column has a fixed spiral blade on its surface.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through a segmented assembly suspension design, achieves lightweight and multi-functional integration of anti-clogging and anti-entanglement functions for mini-tillers. It improves the ease of operation of manual mini-tillers, enhances the user experience for different users, and helps expand the applicability of mini-tillers. The segmented assembly is vertically suspended between the frame guard plate and the cutter shaft, and does not rotate synchronously with the cutter shaft. It generates segmented oscillation and inter-segment vibration solely through the vibration of the mini-tiller's body during operation. No additional power source is required, and it does not increase the overall weight or operating load, perfectly adapting to manual mini-tillers. To meet the need for lightweight design, this structure integrates anti-clogging, anti-tangling, and self-cleaning functions. Through segmented swinging and inter-segment vibration, it effectively inhibits soil clumping, reduces soil adhesion, and disturbs weeds to fall off. It avoids the shortcomings of traditional anti-clogging structures, such as being bulky and prone to mud accumulation, and significantly reduces operating resistance. This allows adult men to operate it easily, and women with weaker physical strength and middle-aged and elderly farmers can also use it stably, significantly improving the convenience of operation. It provides a lightweight, multifunctional, and easy-to-operate solution for small-scale farmland cultivation, effectively solving the pain points of heavy operation and limited applicability of manual micro-tillers.

[0018] 2. As the core sub-unit of the segmented assembly, the chain link structure allows for coordinated movement among the links. Under the vibration of the machine body, it generates multi-segment flexible oscillations, creating a continuous vibrational impact. This not only disrupts the soil's ability to form clumps but also disturbs and dislodges entangled weeds, achieving highly efficient anti-clogging and anti-entanglement. Furthermore, the hollow strip design of the chain link structure makes it smaller and lighter than traditional plate-shaped mudguards and scrapers, significantly reducing collision resistance during operation and minimizing power loss in the tiller. Simultaneously, the mutual collision between the links enables a self-cleaning function, preventing soil accumulation and ensuring long-term stable anti-clogging performance. This structure is fixed to the frame guard plate and rotating seat through snap-fit ​​assembly, eliminating the need for complex tools and significantly reducing assembly and maintenance costs. As an independent add-on module, it requires minimal modification to existing core components of the tiller, offering strong adaptability and direct compatibility with most tiller models, further reducing the cost of promotion and application.

[0019] 3. This invention upgrades the strength of the segmented anti-blocking mechanism through the hinged structure of the solid anti-blocking column, rotating shaft, and U-shaped connecting seat, improving operational reliability in complex farming scenarios. Compared to the chain link structure, the solid structure of the anti-blocking column results in greater weight and stronger inertial impact energy under the same machine vibration excitation, making it more effective at breaking up sticky soil clods and stubborn weeds. Simultaneously, the cooperation between the U-shaped connecting seat and the rotating shaft transforms complex translational collisions into stable hinged rotations, maintaining a continuous segmented disturbance effect within a smaller operating space. This avoids motion interference and improves motion smoothness. This structure completely eliminates the hollow design, avoiding the problem of soil embedding and accumulation. The anti-clogging column can rotate autonomously under the influence of soil friction, shaking off the wet mud adhering to the surface. This fundamentally solves the problem of adhesion and clogging in moist, sticky soil, making it suitable for farming scenarios with stronger adhesion and denser weeds. At the same time, the structure still retains the advantages of segmented self-cleaning. The column can automatically peel off the surface soil during swinging and rotation without functional degradation. Moreover, the overall structure is still a strip column structure, which occupies less space and has lower contact resistance compared to traditional plate structures. It does not increase the handling load and complements the chain link structure to cover different farming needs.

[0020] 4. The spiral blades are integrated and fixed to the anti-clogging column, rotating synchronously with the column to create a triple anti-clogging and anti-entanglement effect of "stirring + cutting + impact." Compared to the solid column in Example 2, it can more efficiently break up stubborn, sticky soil clumps and cut thick weeds, completely solving the clogging problem in complex scenarios. The spiral structure design of the spiral blades, compared to flat blades, allows for smoother contact with soil and weeds during rotation, effectively reducing rotational resistance and improving rotational efficiency. At the same time, the natural gaps between the spiral blades can achieve dual self-cleaning through centrifugal force and inter-segment vibration, preventing soil from accumulating and solidifying in the gaps, ensuring stable stirring and cutting effects. This structure is suitable for harsh farming scenarios with extremely sticky soil, thick weeds, and severely compacted soil, making up for the shortcomings of insufficient impact of the chain structure and the limited cutting ability of the solid column. Together with the previous two examples, it forms a tiered adaptation, covering various farming needs.

[0021] 5. This invention abandons the traditional plate-shaped anti-clogging structure design and innovatively adopts a segmented suspension structure. It passively utilizes the vibration of the machine body to achieve anti-clogging without external power or changing the movement state of the cutter shaft. This ensures both lightweight operation and long-term anti-clogging, breaking through the limitations of existing technologies. The three embodiments are adapted to different tillage scenarios: Embodiment 1 is suitable for conventional shallow tillage, Embodiment 2 is suitable for sticky and complex scenarios, and Embodiment 3 is suitable for harsh working conditions, forming complementary coverage to meet the tillage needs of different users and different plots, greatly improving the versatility of the micro-tiller. At the same time, all structures of this invention are independent additional modules, with low processing costs, simple assembly, and minimal modification to existing equipment, facilitating large-scale promotion and application. It not only improves the operating experience of manual micro-tillers and reduces the operating load, but also significantly improves operating efficiency and equipment reliability. Attached Figure Description

[0022] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the main structure in Embodiment 1 of the present invention.

[0023] Figure 2 This is a partial three-dimensional schematic diagram of the main structure in Embodiment 1 of the present invention.

[0024] Figure 3 This is a schematic cross-sectional view of the cam and the rotating seat of the present invention.

[0025] Figure 4 This is a partial planar schematic diagram of the main structure in Embodiment 1 of the present invention.

[0026] Figure 5 This is a frontal perspective three-dimensional schematic diagram of the main structure in Embodiment 2 of the present invention.

[0027] Figure 6 This is a partial three-dimensional schematic diagram of the segmented assembly in Embodiment 2 of the present invention.

[0028] Figure 7 This is a three-dimensional schematic diagram of the segmented assembly in Embodiment 2 of the present invention.

[0029] Figure 8 This is a partial planar schematic diagram of the main structure in Embodiment 3 of the present invention.

[0030] Figure 9 This is a three-dimensional schematic diagram of the segmented assembly in Embodiment 3 of the present invention.

[0031] In the picture: 1. Machine body; 11. Blade shaft; 111. Cam; 12. Rotary tiller blade; 2. Flexible anti-clogging module; 21. Frame guard plate; 22. Segmented assembly; 221. Anti-clogging column; 222. Rotary shaft; 223. U-shaped connecting seat; 23. Rotating seat; 24. Spiral blade. Detailed Implementation

[0032] 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 protection scope of the present invention.

[0033] It should be noted that the working principle and specific structure of the aforementioned body 1, cutter shaft 11, and rotary tiller blades 12 are all existing technologies. The body 1 provides the installation foundation and load-bearing support for the entire micro-tiller, and provides stable installation positioning for the flexible anti-clogging module 2, cutter shaft 11, and rotary tiller blades 12, ensuring the structural stability of the micro-tiller during operation. The cutter shaft 11, as the core transmission component, is used to receive the torque output from the power source and drive the surface-mounted rotary tiller blades 12 to rotate synchronously at high speed, providing power support for soil cutting and tillage operations. It is the core transmission structure for realizing rotary tillage operations. The rotary tiller blades 12, as the direct operation execution component, are used to cut and turn the soil under the drive of the cutter shaft 11 to complete farmland tillage operations. It is the core execution structure for realizing soil breaking and tillage. Given the universality of the above structure, its specific principles will not be described in detail below.

[0034] like Figure 1 and Figure 2 As shown in Embodiment 1: A multi-functional combined micro-tiller includes a body 1, a blade shaft 11 mounted on the bottom of the body 1, a plurality of rotary tillers 12 mounted on the surface of the blade shaft 11, and a flexible anti-clogging module 2 disposed above the rotary tillers 12; the flexible anti-clogging module 2 includes a frame guard plate 21 fixed to the body 1, and a plurality of segmented assemblies 22 vertically suspended between the frame guard plate 21 and the blade shaft 11, each segmented assembly 22 being located within the gap between adjacent rotary tillers 12, the upper end of each segmented assembly 22 being fixedly connected to the frame guard plate 21, and the lower end rotating eccentrically with respect to the blade shaft 11. In conjunction with the operation of the micro-tiller, the rotating cutting shaft 11 and rotary blades 12 generate vibrations in the machine body. The segmented assembly 22 does not rotate synchronously with the cutting shaft 11. Under the dual action of machine body vibration and eccentric excitation, the segmented assembly 22 produces segmented oscillation and inter-segment vibration to suppress soil caking and reduce the soil adhesion layer on the surface of the cutting shaft 11 and rotary blades 12. At the same time, it disturbs and removes weeds entangled in the gaps between adjacent rotary blades 12. The segmented assembly 22 remains in a flexible and loose state as a whole, and does not have rigid collisions or motion interference with the rotary blades 12 during the oscillation process.

[0035] like Figure 2 and Figure 3As shown, a cam 111 is fixedly mounted on the surface of the cutter shaft 11 and rotates synchronously with it. The cam 111 has an eccentric drive structure. The bottom of the segmented assembly 22 is connected to a rotating seat 23. The rotating seat 23 is rotatably fitted onto the cutter shaft 11 and abuts against the contour of the cam 111. When the cam 111 rotates, it periodically pushes the rotating seat 23 through the eccentric contour, so that the segmented assembly 22 and the cutter shaft 11 form an eccentric rotational engagement and generate eccentric oscillation. The segmented assembly 22 is formed by connecting several independent sub-units in sequence, and adjacent sub-units can move relative to each other.

[0036] It should be noted that, as Figure 3 As shown, the sub-unit is a link structure. The segmented assembly 22 is composed of several independent links connected in sequence. The links can move relative to each other. The uppermost link is snapped and fixed to the frame guard plate 21, and the lowermost link is snapped and fixed to the rotating seat 23, so that the segmented assembly 22 is suspended between the frame guard plate 21 and the rotating seat 23 without hindering the relative movement between the links and the overall swing.

[0037] It should be added that, in this embodiment, the sub-unit adopts a chain link structure, with each chain link moving and cooperating with each other. Under the vibration of the machine body, it can generate multi-segment flexible oscillation, thereby creating a continuous vibration effect on the cutter shaft 11 and rotary tiller 12. This can not only break up soil clumps and reduce the soil adhesion layer on the surface of the cutter shaft 11 and rotary tiller 12, but also disturb the weeds wrapped around the rotary tiller mechanism, causing them to fall off, thus achieving the purpose of preventing clogging and entanglement. At the same time, the chain links are fixed to the frame guard plate 21 and the rotating seat 23 by snap-fit. Specifically, the top of the uppermost chain link is integrally formed with a buckle, and the frame guard plate 21 has a corresponding slot that matches the buckle. The chain link is fixed to the frame guard plate 21 by the engagement of the buckle and the slot. The bottom of the lowermost chain link is fixed to the frame guard plate 21 by snap-fit. The unit is also equipped with a buckle, and the rotating seat 23 has a corresponding matching slot. The same snap-fit ​​method is used to fix the chain link to the rotating seat 23. This snap-fit ​​structure is easy to disassemble and maintain, and the overall structure does not rotate with the cutter shaft 11, so it will not interfere with the movement of the rotary tiller 12, ensuring the stable operation of the mini tiller. In addition, the chain link structure has a mature processing technology and the raw materials are readily available, which can effectively control the processing and structural costs. The snap-fit ​​assembly method does not require complicated tools, which greatly reduces the assembly time and assembly cost. Moreover, the flexible anti-blocking module 2 is an independent additional structure, which does not require major modifications to the existing mini tiller's body, cutter shaft 11 and other core components. The modification range is small and the adaptability is strong. It can be directly adapted to most existing mini tiller models, further reducing the cost of promotion and application.

[0038] It should be added that during the operation of a traditional micro-tiller, the soil, under the repeated cutting and compression of the rotary blades 12, easily accumulates and adheres layer by layer to the surface of the blade shaft 11, especially in cohesive soil with high water content. As the rotation time increases, it gradually compacts into hard clods, eventually causing blockage of the channel between the blade shaft 11 and the rotary blades 12. At the same time, weeds in the field will continuously wrap around the outer circumference of the blade shaft 11 and the base of the rotary blades 12 under the pulling force generated by the rotation of the rotary blades 12, becoming increasingly tightly wrapped into clumps, further aggravating the blockage. This leads to increased rotational resistance of the blade shaft 11, decreased rotary tillage efficiency, and even jamming and shutdown. The weight, size, and connection gap of the chain links in the segmented assembly 22 are matched and designed according to the typical operating vibration spectrum of the target micro-tiller model to ensure effective oscillation under rated operating conditions. The length L of the segmented assembly 22 in the natural suspension state satisfies the following relationship: L <H-R-S。

[0039] Wherein, H is the distance from the lower surface of the frame guard plate 21 to the axis of the cutter shaft 11, R is the maximum rotation radius of the rotary tiller 12, and S is the safety clearance. This dimensional relationship ensures that even if the chain link swings to one side to the maximum extent during vibration, its lower end will not enter the rotation envelope of the rotary tiller 12.

[0040] Specifically, when the mini tiller is working in the field, the cutter shaft 11 rotates continuously at high speed under power, driving the rotary tiller blades 12 to continuously cut and turn the soil. During the process of hard contact with the soil, high-speed friction, and soil compression and collision, continuous and uniform vibration of the machine body is naturally generated. This vibration provides a stable and continuous power source for the operation of the flexible anti-clogging module 2. At the same time, the cam 111, which is fixedly installed on the cutter shaft 11, rotates synchronously with the cutter shaft 11. Its eccentric contour periodically pushes the rotating seat 23, so that the segmented assembly 22 is superimposed with eccentric excitation on the basis of the machine body vibration, which greatly enhances the swing amplitude and the inter-segment collision intensity, providing stronger and more controllable disturbance power for the entire anti-clogging and anti-entanglement process.

[0041] When the vibration of the machine body generated by the operation of the micro tiller and the eccentric excitation of the cam are transmitted to each link, since the segmented assembly 22 does not rotate synchronously with the cutter shaft 11, each independent link will generate stronger free vibration under its own inertia and dual excitation. Adjacent links can collide and resist each other, and can also achieve relative movement in multiple directions such as front and back, left and right under the limitation of the connection structure, with sufficient movement space, and will not jam or rigid interference.

[0042] Specifically, the segmented assembly 22 is vertically suspended between the frame guard plate 21 and the rotating seat 23 using a chain link structure, and is arranged as a whole within the gap between adjacent rotary blades 12. This arrangement itself forms the first physical barrier. Before the loose soil above the blade shaft 11 and rotary blades 12 is piled up and compacted, it will be blocked and dispersed by the chain link structure, making it difficult to continuously accumulate in a local area, thus reducing the probability of soil clumping from the source. Secondly, as a fixed load-bearing structure, the frame guard plate 21 not only provides a stable suspension foundation for the segmented assembly 22, but also, its horizontal position above the rotary blades 12 can directly block the falling of large soil clods and resist the formation of hard clods, preventing large clods from entering the area of ​​the blade shaft 11 and causing serious blockage. At the same time, the chain links are arranged in the gaps between adjacent rotary tillers 12, which directly blocks the path of weeds continuously winding around the rotary tillers 12 on the blade shaft 11 from a physical space. This makes it difficult for weeds to form a dense clump that spans two rotary tillers, and they can only be confined to a single gap, which greatly reduces the stability of winding and the conditions for continuous development.

[0043] Secondly, this segmented independent vibration mode is not concentrated at a single point, but can continuously impact and peel off the wet soil and small adobe attached to the surface of the cutter shaft 11, destroying the soil clotting conditions. The uppermost chain link will repeatedly and slightly touch the frame guard plate 21 during the vibration process, further amplifying the vibration effect through collision and transmitting it downwards; the lowermost chain link moves slightly in sync with the rotating seat 23 and continuously touches the outer periphery of the cutter shaft 11, directly applying the vibration to the parts most prone to soil adhesion and weed entanglement, achieving precise disturbance.

[0044] For weeds entangled in the gap between the blade shaft 11 and the rotary tiller blades 12, the multi-directional movement, mutual collision, and eccentric oscillation of the chain links under the vibration of the machine body and the eccentric excitation of the cam will generate continuous pulling, slapping, and impact effects, preventing the weeds from tightly entangled on the surface of the parts. The clumps of weeds that have already formed will loosen and fall off under continuous vibration, resistance, and impact, preventing the clumps of weeds from accumulating and becoming thicker. Compared with the traditional fixed anti-entanglement structure, this structure does not rely on a static smooth surface for anti-entanglement, but rather uses dynamic and continuous disturbance to destroy the entanglement tension of the weeds, making it impossible for them to adhere stably, fundamentally solving the problem that uneven structures are more prone to weed entanglement.

[0045] The mutual contact between the links can also generate intermittent impact force, further breaking up the soil clods that are about to form, keeping the soil loose and preventing it from solidifying on the surface of the cutter shaft 11.

[0046] Compared to traditional fixed mudguards and passive mud scraping structures, the chain link structure in this embodiment requires no external power and does not change the motion state of the cutter shaft 11. It can achieve full-section and full-area anti-blocking and anti-entanglement by relying solely on the vibration of the machine body and the eccentric excitation of the cam. At the same time, the snap-fit ​​assembly structure is simple and reliable, with low processing and usage costs. It requires minimal modification to existing micro-tillers, solving the common industry problems of soil clumping and weed entanglement, and has strong practicality and adaptability.

[0047] In addition, the segmented structure of the segmented assembly 22 also has a self-cleaning function that traditional anti-clogging structures do not have. Traditional anti-clogging structures such as mudguards and scrapers can prevent soil clogging and weeds from getting tangled to a certain extent, but these plate-type structures have a large surface area and strong rigidity. They are easily covered and accumulated by wet soil during operation. As the soil continues to adhere, they become thick and heavy, which leads to a gradual decline in their anti-clogging and mud scraping functions. In fact, the excessive accumulation of soil may even affect the normal operation of the micro-tiller.

[0048] In this embodiment, the segmented assembly 22, relying on its segmented chain link structure, allows adjacent chain links to continuously collide and resist each other during vibration. This inter-segment vibration and collision does not require additional drive, and can automatically peel off the soil from the surface of the chain links, completing mutual cleaning. This effectively prevents soil from accumulating and covering the surface of the chain links, ensuring that its anti-clogging and disturbance functions are always stable. At the same time, compared with traditional plate-type mudguards and scrapers, the chain link structure is smaller and lighter. Moreover, the chain link itself adopts a hollow strip design, rather than a heavy plate design, which not only greatly reduces the collision resistance with soil and weeds during operation and reduces the power loss of the micro-tiller, but also further improves the vibration flexibility of the chain links, making the segmented vibration and mutual cleaning effect more significant. Compared with traditional anti-clogging structures, it has achieved a breakthrough improvement in practicality and functionality.

[0049] like Figure 4 and Figure 6 As shown, based on Embodiment 1, Embodiment 2: The subunit includes an anti-blocking column 221, and both the upper and lower ends of the anti-blocking column 221 are provided with U-shaped connecting seats 223. Adjacent anti-blocking columns 221 are connected to each other through U-shaped connecting seats 223.

[0050] It should be noted that, as Figures 4 to 6 As shown, the uppermost anti-blocking column 221 is fixed to the frame guard plate 21 by its upper U-shaped connecting seat 223, and the lowermost anti-blocking column 221 is fixed to the rotating seat 23 by its lower U-shaped connecting seat 223, so that each anti-blocking column 221 can swing relative to each other without affecting the vibration and anti-blocking effect of the segmented assembly 22. Both the upper and lower ends of the anti-blocking column 221 are rotatably fitted with rotating shafts 222, and the U-shaped connecting seat 223 is fixedly installed on the corresponding rotating shaft 222.

[0051] It should be added that the solid anti-blocking column 221 used in this embodiment has a greater weight and can obtain stronger inertial impact energy under the same vibration excitation of the machine body, which is more effective in breaking up sticky soil clods and stubborn grass clumps. At the same time, due to the use of solid anti-blocking column 221 structure, the overall movement space is correspondingly reduced. Adjacent columns no longer rely on large-amplitude swing collisions, but through the cooperation of U-shaped connecting seat 223 and rotating shaft 222, the complex translational collision is transformed into stable, low-friction hinged rotation, which not only ensures segmented flexible movement capability, but also avoids motion interference, making the structure run more smoothly and has higher durability.

[0052] Specifically, when the micro-tiller is in operation, the vibration of the machine body generated by the rotation of the cutter shaft 11 and the rotary blades 12 still provides power for the segmented assembly 22. The anti-blocking column 221 does not rotate with the cutter shaft 11, but only moves under the action of vibration.

[0053] The core difference between this embodiment and the link structure in Embodiment 1 lies in the form of motion, structural characteristics, and applicable scenarios. The two are clearly complementary: the link structure in Embodiment 1 is mainly characterized by large-amplitude swinging and can only deflect slightly. It is lightweight and has a large range of motion, making it more suitable for conventional shallow tillage scenarios with loose soil and few weeds. In contrast, this embodiment uses a solid anti-clogging column 221, completely eliminating the hollow design. It has a larger volume and weight, and the overall swing amplitude is correspondingly reduced. It mainly relies on the rotating shaft 222 and the U-shaped connecting seat 223 to achieve free rotation around the shaft. This structural change enables it to accurately adapt to complex and harsh tillage environments with high viscosity, high humidity, and dense weeds.

[0054] When working in wet, sticky soil, traditional hollow or plate structures are prone to soil embedding, adhesion, and encapsulation, leading to failure and increased weight. In contrast, the solid anti-clogging column 221 in this embodiment has no cavities or dead corners on its surface, so soil can only adhere to the surface briefly and cannot embed and accumulate. At the same time, the anti-clogging column 221 is not passively subjected to vibration, but can be directly driven to rotate autonomously by the soil friction during contact with soil and grass clumps. Through continuous rotation, the wet mud adhering to the surface is shaken off and peeled off, fundamentally avoiding the problems of blockage and functional decline caused by wet soil adhesion.

[0055] Adjacent anti-blocking columns 221 are mutually limited by U-shaped connecting seats 223. During rotation and small swing, intermittent impact collisions can still be generated, which can further shake off the soil and ensure that the structural connection will not be jammed by wet mud, thus making the operation more stable.

[0056] The increased volume and solid structure of the anti-blocking column 221 give it higher structural rigidity and impact inertia. When facing hard soil clods and tough weeds, it will not avoid them like a chain link, but will directly crush the soil and tear the grass clumps with a stronger impact force. With the reduced swing amplitude, it avoids the interference risk caused by large movements and makes the impact more concentrated and stable, and can penetrate deep into the interior of the cohesive soil clump to disturb and break it up.

[0057] Compared to Example 1, this example sacrifices some swing amplitude in exchange for higher structural strength, stronger clogging ability and better anti-adhesion performance. While maintaining the advantages of segmented self-cleaning and the overall size is still smaller than that of traditional mudguards, it achieves stable adaptation to complex working conditions with high humidity, high viscosity and many weeds, forming a clear division of labor with Example 1.

[0058] like Figure 8 and Figure 9 As shown, based on Embodiment 2, Embodiment 3: each anti-blocking column 221 has a fixed spiral blade 24 on its surface.

[0059] Specifically, during operation, the vibration of the machine body generated by the rotation of the blade shaft 11 and the rotary blade 12 causes the anti-blocking column 221 to swing slightly while rotating stably around the rotating shaft 222. The spiral blade 24 fixed on the surface of the column rotates synchronously with the anti-blocking column 221, forming a dual disturbance effect of "column rotation + blade spiral agitation" - which is also the core difference between this embodiment and embodiment two.

[0060] In Embodiment 2, anti-clogging relies solely on the rotation and slight oscillation of the solid anti-clogging column 221 and the impact of adjacent columns. However, in this embodiment, the spiral blade 24 can continuously agitate the surrounding soil during rotation. On the one hand, it can more efficiently break up the cohesive soil clumps that are about to solidify and cut large clumps of wet soil into small soil pieces, fundamentally inhibiting the adhesion and clumping of soil on the surface of the blade shaft 11 and rotary tiller 12. On the other hand, the sharp edge of the spiral blade 24 can directly cut and sever the weeds entangled near the blade shaft 11 and rotary tiller 12, preventing the weeds from tangling together. At the same time, the agitation effect of the spiral structure can quickly peel off the entangled weeds, completely solving the problem of difficult-to-clean entangled weeds in complex scenarios.

[0061] Because the spiral blade 24 is integrally fixed with the anti-blocking column 221, the structure has higher strength. When it collides with hard soil clods and coarse weeds, it will not fall off or deform. It is suitable for harsh farming scenarios with strong stickiness, coarse weeds, and severely compacted soil, such as deep-plowed orchards, heavy clay farmland in mountainous areas, and long-term uncultivated abandoned land. In such scenarios, the chain link structure of Embodiment 1 has insufficient impact force, and the solid anti-blocking column 221 of Embodiment 2 is difficult to quickly cut coarse weeds and break up stubborn sticky soil clumps. However, the spiral blade 24 of this embodiment can accurately make up for this deficiency and achieve a triple anti-blocking and anti-entanglement effect of "stirring + cutting + impact".

[0062] Meanwhile, this embodiment retains the self-cleaning advantage of the segmented structure: natural gaps are formed between adjacent threads of the spiral blade 24. During operation, a small amount of sticky soil inevitably gets embedded in these thread gaps. When the anti-blocking column 221 rotates, the frictional force between the threads and the soil is converted into a stronger centrifugal force. This centrifugal force can directly act on the embedded soil in the thread gaps, completely shaking it off and preventing soil from accumulating and solidifying in the thread gaps. This prevents the spiral blade 24 from getting stuck due to soil accumulation in the gaps, thus affecting the agitation and cutting effect. In addition, small vibrations and mutual... Under the impact and collision, the soil remaining in the threaded gaps that was not completely thrown off by centrifugal force will be further peeled off through continuous vibration and knocking. At the same time, the spiral blade 24 adopts a spiral structure design, which makes smoother contact with soil and weeds when rotating compared to flat blades. This can effectively reduce rotational resistance and improve rotational efficiency. It can not only achieve the stirring and cutting functions more efficiently, but also further reduce the power loss of the micro-tiller. It takes into account the anti-clogging and anti-entanglement effect and the economic operation of the equipment. It forms a synergistic optimization with the solid column structure of Embodiment 2, further highlighting the rationality and creativity of the structural design of this embodiment.

[0063] In addition, the spiral blade 24 and the anti-clogging column 221 can be processed and formed simultaneously. The processing technology is simple, no additional complicated assembly steps are required, and the processing and assembly costs are not increased. Moreover, the whole is still an independent additional module, which does not require modification of the core components of the micro tiller and has strong adaptability.

[0064] This embodiment forms a tiered adaptation with the previous two embodiments. Embodiment 1 is adapted to conventional shallow tillage and loose soil scenarios, Embodiment 2 is adapted to complex scenarios with sticky soil and many weeds, and this embodiment is adapted to harsh scenarios with extremely sticky soil and thick weeds. The three complement each other to cover various tillage needs.

[0065] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional combined micro-tiller, comprising a body (1), wherein a blade shaft (11) is mounted on the bottom of the body (1), and a plurality of rotary tillage blades (12) are mounted on the surface of the blade shaft (11), characterized in that: A flexible anti-clogging module (2) is provided above the rotary tiller blades (12); the flexible anti-clogging module (2) includes a frame guard plate (21) fixed to the machine body (1), and several segmented assemblies (22) are vertically suspended between the frame guard plate (21) and the blade shaft (11). Each segmented assembly (22) is located in the gap between adjacent rotary tiller blades (12). The upper end of the segmented assembly (22) is fixedly connected to the frame guard plate (21), and the lower end is eccentrically rotated with the blade shaft (11). When the micro-tiller is working, the blade shaft (11) and the rotary tiller blades (12) are connected. The rotating cutting generates machine vibration. The segmented assembly (22) does not rotate synchronously with the cutter shaft (11). Under the dual action of machine vibration and eccentric excitation, the segmented assembly (22) generates segmented swing and inter-segment vibration to suppress soil caking and reduce soil adhesion layers on the cutter shaft (11) and rotary tiller (12) surfaces. At the same time, it disturbs and removes weeds entangled in the gap between adjacent rotary tillers (12). The segmented assembly (22) as a whole remains in a flexible and loose state, and does not have rigid collisions or motion interference with the rotary tiller (12) during the swing process. The cutter shaft (11) is fixedly mounted on the surface of the cutter shaft (11) and rotates synchronously with it. The cam (111) is an eccentric drive structure. The bottom of the segmented assembly (22) is connected to a rotating seat (23). The rotating seat (23) is rotatably mounted on the cutter shaft (11) and abuts against the contour of the cam (111). When the cam (111) rotates, it periodically pushes the rotating seat (23) through the eccentric contour, so that the segmented assembly (22) and the cutter shaft (11) form the eccentric rotational engagement and generate eccentric oscillation. The segmented assembly (22) is formed by connecting several independent sub-units in sequence, and the adjacent sub-units can move relative to each other.

2. The multi-functional combined micro-tiller according to claim 1, characterized in that: The sub-unit is a link structure, and the segmented assembly (22) is composed of several independent links connected in sequence, and the links can move relative to each other.

3. A multi-functional combined micro-tiller according to claim 2, characterized in that: The uppermost link is snapped and fixed to the frame guard plate (21), and the lowermost link is snapped and fixed to the rotating seat (23), so that the segmented assembly (22) is suspended between the frame guard plate (21) and the rotating seat (23) without hindering the relative movement between the links and the overall swing.

4. A multi-functional combined micro-tiller according to claim 1, characterized in that: The subunit includes an anti-blocking column (221), and both the upper and lower ends of the anti-blocking column (221) are provided with U-shaped connecting seats (223). Adjacent anti-blocking columns (221) are connected to each other through U-shaped connecting seats (223).

5. A multi-functional combined micro-tiller according to claim 4, characterized in that: The anti-blocking column (221) located at the top end is fixed to the frame guard plate (21) by its upper U-shaped connecting seat (223), and the anti-blocking column (221) located at the bottom end is fixed to the rotating seat (23) by its lower U-shaped connecting seat (223), so that each anti-blocking column (221) can swing relative to each other without affecting the vibration and anti-blocking effect of the segmented assembly (22).

6. A multi-functional combined micro-tiller according to claim 5, characterized in that: The upper and lower ends of the anti-blocking column (221) are rotatably fitted with a rotating shaft (222), and the U-shaped connecting seat (223) is fixedly installed on the corresponding rotating shaft (222).

7. A multi-functional combined micro-tiller according to claim 6, characterized in that: Each anti-blocking column (221) has a fixed spiral blade (24) on its surface.

Images