A furrowing device for a mini-tiller

Abstract

This invention relates to the field of ditching technology and discloses a ditching device adapted to a micro-tiller. The device includes a mounting base with a suspension plate at its center and a ditching blade rotatably connected to the end of the suspension plate. A traction drive assembly for power connection to the micro-tiller is located on the side of the mounting base near the micro-tiller. The device also includes a ridging mechanism and a depth adjustment mechanism. The depth adjustment mechanism, used to adjust the ditching depth of the ditching blade, includes a positioning rod fixedly connected to the side of the mounting base near the ground. The positioning rod extends obliquely towards the micro-tiller and has an arc-shaped structure with a triangular cross-section. The end of the mounting base has a height-adjustable depth limit. This invention provides a ditching device adapted to a micro-tiller, which, through the cooperation of the arc-shaped positioning rod and the height-adjustable depth limit wheel, achieves rapid multi-level adjustment of the ditching depth to meet different agronomic needs.

Description

Technical Field

[0001] This invention relates to the field of ditching technology, specifically a ditching device adapted to a micro-tiller. Background Technology

[0002] As an agricultural machine widely used in farmland cultivation, garden management, and small-scale earthmoving operations, the ditching device of a mini tiller is a core functional component for soil ditching. Currently, the basic working principle of the ditching device on a mini tiller mainly relies on the cutting or breaking action driven by power, combined with a corresponding soil discharge mechanism to complete the ditch formation. Specifically, the ditching device transmits the power output from the mini tiller to the working parts through the transmission system, causing it to cut and break the soil, and then transport the broken soil to the sides or rear of the ditch, thereby forming a ditch with a specified cross-sectional shape and depth. Depending on different operational needs, the ditching device can adopt various structural forms, such as spiral ditchers, chain cutter ditchers, and rotary cutter disc ditchers. Among them, the rotary ditching blade is widely used in small and medium-sized mini tillers due to its relatively simple structure, low manufacturing cost, and good adaptability to common soil types.

[0003] However, because rotary ditching blades are typically fixedly mounted on the blade shaft or disc, their position and angle relative to the tiller frame are difficult to adjust flexibly, resulting in a fixed, preset ditching depth. When soil texture, tillage requirements, or agronomic standards change, operators cannot easily adjust the ditching depth in real time, often requiring the replacement of different blade sizes or disassembly and modification of the entire machine, which is cumbersome and inefficient. Furthermore, the fixed-depth ditching method limits the multi-functional capabilities of tillers, making it difficult to meet the varying ditch depth requirements of different crops or under different drainage and irrigation conditions. Therefore, it is necessary to improve the structure of existing ditching devices to solve the technical problem of the inability to freely adjust ditching depth and enhance the flexibility and adaptability of tiller ditching operations. Summary of the Invention

[0004] This invention provides a ditching device adapted to a micro-tiller, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution; A ditching device adapted to a micro-tiller includes a mounting base, a suspension plate disposed in the middle of the mounting base, a ditching blade rotatably connected to the end of the suspension plate, a traction drive assembly for power connection with the micro-tiller disposed on the side of the mounting base near the micro-tiller, and also includes a ridging mechanism and a depth adjustment mechanism. The depth adjustment mechanism is used to adjust the ditching depth of the ditching blade. It includes a positioning rod fixedly connected to the mounting base on the side near the ground. The positioning rod extends at an angle toward the tiller and has an arc-shaped structure with a triangular cross-section. The end of the mounting base is equipped with a height-adjustable depth limiting wheel. The ridging mechanism includes a suspension rod located at the end of the mounting base away from the micro-tiller, and a plow blade is provided at the end of the suspension rod closer to the micro-tiller; When the ditching device moves with the micro-tiller, the positioning rod first inserts downward into the soil. After the depth-limiting wheel touches the ground and rolls along the ground surface, the positioning rod then breaks the soil laterally in the direction of forward movement.

[0006] As a preferred embodiment of the present invention, the mounting base is provided with two trenching cutters on the side near the ground, and there are two positioning rods arranged in parallel. The trenching cutters and the positioning rods have the same movement trajectory along the moving direction of the mounting base. The mounting base is provided with a height adjustment component for adjusting the height of the depth limiting wheel on the side near the ground.

[0007] As a preferred embodiment of the present invention, the height adjustment assembly includes a deflection arm rotatably connected to the mounting base, the end of the deflection arm being rotatably connected to the depth limiting wheel, a fixing block being fixedly connected to the side of the mounting base near the ground, a sliding rod being inserted into the fixing block, one end of the sliding rod near the deflection arm being rotatably connected to one end of a top rod, and the other end of the top rod being rotatably connected to the side of the deflection arm, and a plurality of positioning holes being evenly distributed along the length of the sliding rod, with U-shaped pins detachably inserted into the positioning holes, and the two ends of the U-shaped pins respectively abutting against the two sides of the fixing block.

[0008] As a preferred embodiment of the present invention, the traction drive assembly includes a rotating shaft rotatably connected to the end of the suspension plate, the end of the rotating shaft being fixedly connected to the trenching blade, a bearing seat being fixedly connected to the side of the mounting base away from the ground, a rotating sleeve being rotatably connected to the bearing seat, a traction rod that rotates synchronously with the rotating shaft being slidably passed through the rotating sleeve, and a connector for cooperating with the output end of the micro-tiller being provided at the end of the traction rod near the micro-tiller.

[0009] As a preferred embodiment of the present invention, a vertical plate is provided in the middle of the mounting base, and a rotating head is rotatably connected to the end of the vertical plate. The end of the rotating head near the center of the mounting base is connected to one end of a transmission rod through a gear pair, and the other end of the transmission rod is connected to the rotating shaft through a gear pair. The end of the rotating head near the traction rod is connected to one end of a flexible connector, and the other end of the flexible connector is connected to the end of the traction rod.

[0010] As a preferred embodiment of the present invention, the end of the suspension rod is provided with a direction adjustment component for adjusting the tilt angle of the plow blade.

[0011] As a preferred embodiment of the present invention, the direction adjustment assembly includes a sleeve fixedly connected to the end of the suspension rod near the ground, a rotating rod rotatably connected inside the sleeve, the end of the rotating rod near the center of the mounting base fixedly connected to the middle of the plowshare, the end of the rotating rod away from the mounting base slidably connected to a deflection handle, the side of the deflection handle being connected to the side of the rotating rod via a tension spring, a limiting plate fixedly connected to the side of the suspension rod, and a plurality of limiting grooves cooperating with the deflection handle being provided on the inner side of the limiting plate.

[0012] As a preferred embodiment of the present invention, the suspension rod is slidably connected to the mounting base, a triangular push plate is fixedly connected to the end of the suspension plate away from the ground, a lifting screw is rotatably connected to the middle of the triangular push plate, and the lifting screw is threadedly connected to the mounting base.

[0013] The present invention has the following advantages; 1. The trenching depth can be flexibly adjusted; by setting an arc-shaped positioning rod and a height-adjustable depth-limiting wheel, and using a multi-level mechanical limiting structure composed of a U-shaped pin and positioning holes, the operator can quickly change the height of the depth-limiting wheel without tools, thereby accurately controlling the trenching depth to meet the agronomic requirements of different crops and different soil types.

[0014] 2. Low soil breaking resistance and strong adaptability: The positioning rod adopts an isosceles triangular cross-section with an oblique angle at the lower end. When moving laterally, it can cut the soil like a knife, pre-forming guide grooves and significantly reducing the resistance of subsequent cutting by the trenching blade. Even for hard or compacted soil, this device can effectively complete trenching operations, expanding the application range of the mini tiller.

[0015] 3. High straightness of trenching and stable operation; two parallel and symmetrical positioning rods are inserted into the soil at the same time to form a double guide structure, which effectively prevents the device from swaying left and right during the movement, ensuring the straightness of trenching and improving the quality of operation.

[0016] 4. Reliable power transmission and resistance to harsh working conditions; the transmission method combining flexible connectors and gear pairs allows the traction rod to stably transmit torque even when sliding left and right or slightly deflecting; the design of the limit ring and thrust bearing allows the traction force to be directly transmitted to the mounting base through the rotating sleeve under high traction conditions such as climbing, avoiding overload damage to the flexible connectors and improving the reliability and service life of the whole machine.

[0017] 5. Adjustable ridging direction and high functional integration: The direction adjustment component allows for easy changes in the plow's pushing direction, enabling unilateral ridging on either the left or right side; the lifting screw adjusts the plow height, thereby controlling the soil thickness of the ridged soil and the amount of soil remaining at the bottom of the furrow, adapting to the requirements of different crops for ridge height and furrow bottom. One device simultaneously completes the three processes of furrowing, soil breaking, and ridging, resulting in high operational efficiency.

[0018] 6. Simple structure and strong anti-pollution ability; the height adjustment mechanism adopts a mechanical locking method of U-shaped pin and positioning hole, so even if mud splashes into the positioning hole, it will not affect the reliability of locking; the transmission rod is equipped with a protective cover to effectively prevent mud from entering the gear transmission part and reduce the maintenance frequency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a ditching device adapted for a micro-tiller.

[0021] Figure 2 This is a front view of a ditching device adapted for a micro-tiller.

[0022] Figure 3 This is a schematic diagram of the height adjustment component in a ditching device adapted for a micro-tiller.

[0023] Figure 4 This is a schematic diagram of the structure of a protective cover in a ditching device adapted for a micro-tiller.

[0024] Figure 5 This is a schematic diagram of the traction drive component in a ditching device adapted for a micro-tiller.

[0025] Figure 6 for Figure 5 The left view.

[0026] Figure 7 This is a schematic diagram of the ridging mechanism in a ditching device adapted for a micro-tiller.

[0027] Figure 8 for Figure 7 The front view.

[0028] Figure 9 This is a schematic diagram of the structure of a ditching device adapted for a micro-tiller, in which the deflection handle and the limiting groove cooperate.

[0029] In the diagram: 1. Mounting base; 2. Suspension plate; 3. Trenching cutter; 4. Depth adjustment mechanism; 5. Ridging mechanism; 6. Traction drive assembly; 7. Positioning rod; 8. Depth limiting wheel; 9. Deflection arm; 10. Top rod; 11. Sliding rod; 12. Fixing block; 13. Positioning hole; 14. U-shaped pin; 15. Height adjustment assembly; 16. Protective cover; 17. Rotating shaft; 18. Transmission rod; 19. Vertical plate; 20. Rotating head; 21. Flexible connector; 22. Traction rod; 23. Limiting ring; 24. Bearing seat; 25. Rotating sleeve; 26. Connector; 27. Suspension rod; 28. Plow; 29. ​​Rotating rod; 30. Sleeve; 31. Deflection handle; 32. Tension spring; 33. Limiting plate; 34. Direction adjustment assembly; 35. Lifting screw; 36. Triangular push plate; 37. Limiting groove. Detailed Implementation

[0030] 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.

[0031] In one embodiment, see Figure 1 and Figure 2 A ditching device adapted for a mini tiller includes a mounting base 1, which serves as the supporting base for the entire device and is used to fix and install various functional components. Suspension plates 2 are vertically fixed to the front and rear sides of the lower surface of the mounting base 1. A ditching blade 3 is rotatably connected to the lower end of the suspension plate 2. The ditching blade 3 rotates at high speed under power drive, cutting and breaking up the soil to prepare for subsequent ditching and ridging. A traction drive assembly 6 is provided on the right side of the upper surface of the mounting base 1. The traction drive assembly 6 serves two purposes: firstly, it mechanically connects the mounting base 1 to the mini tiller, enabling the mini tiller to tow the entire device; secondly, it transmits the rotational power of the mini tiller to the ditching blade 3, driving its rotation; and it also includes a ridging mechanism 5 and a depth adjustment mechanism 4.

[0032] The depth adjustment mechanism 4 is located on the right side of the lower surface of the mounting base 1 and is used to adjust the vertical distance between the mounting base 1 and the ground, thereby controlling the trenching depth of the trenching cutter 3. The depth adjustment mechanism 4 includes a positioning rod 7 fixedly connected to the right side of the lower surface of the mounting base 1. The positioning rod 7 extends downward and to the right in an arc-shaped curved structure, which facilitates insertion into the soil when the device moves forward. The cross-section of the positioning rod 7 is an isosceles triangle, with the apex of the triangle facing to the right (i.e., the direction of travel). The lower end of the positioning rod 7 is machined with an angle to reduce soil penetration resistance. This triangular cross-section design allows the positioning rod 7 to break through the soil like a knife when moving laterally, reducing travel resistance. A height-adjustable depth-limiting wheel 8 is provided on the right side of the positioning rod 7. The depth-limiting wheel 8 rolls along the ground during operation. By adjusting its height relative to the mounting base 1, the clearance between the mounting base 1 and the ground can be changed, thereby controlling the trenching depth.

[0033] The ridging mechanism 5 is located on the left side of the mounting base 1, and includes a suspension rod 27 vertically mounted on the left side of the mounting base 1. A plow shovel 28 is fixedly mounted on the lower right side of the suspension rod 27. When the entire device moves to the right, the plow shovel 28 pushes the soil broken by the furrowing blade 3 to one side to form a ridge.

[0034] In one instance of this embodiment, please refer to Figure 1 and Figure 2 Two symmetrically distributed trenching blades 3 are arranged on the front and rear sides of the suspension plate 2, with the blades of the two trenching blades rotating in opposite directions. This causes the broken soil to splash towards the center of the mounting base 1, facilitating the subsequent ridge formation by the plow shovel 28. Two parallel and symmetrical positioning rods 7 are arranged on the lower right side of the mounting base 1. When the two positioning rods 7 are inserted into the ground simultaneously, they provide guidance and stability, preventing the device from tilting during movement and ensuring straight trenching. Furthermore, the trenching blades 3 and the positioning rods 7 are coplanar in the front-to-back direction (i.e., the plane in which the mounting base 1 moves), meaning their movement trajectories coincide. This ensures that the trenches pre-cut by the positioning rods 7 are aligned with the cutting path of the trenching blades 3, thereby reducing the cutting resistance of the trenching blades 3 and improving soil breaking efficiency.

[0035] In one instance of this embodiment, please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6The traction drive assembly 6 includes a rotating shaft 17 rotatably connected to the lower end of the suspension plate 2, with trenching blades 3 fixedly connected to its front and rear ends. A bearing seat 24 is fixed to the right side of the upper surface of the mounting base 1, and a rotating sleeve 25 is rotatably connected to the upper end of the bearing seat 24. The rotating sleeve 25 can rotate in both directions. A traction rod 22 passes through the rotating sleeve 25, and can rotate synchronously with the rotating sleeve 25 while also sliding axially left and right. A U-shaped connector 26 is provided at the right end of the traction rod 22 for connecting to the power output shaft of the micro-tiller, thereby realizing power input and traction. A vertical plate 19 is fixed to the right side of the center of the mounting base 1. A rotating head 20, oriented left and right, is rotatably connected to the upper end of the plate 19. The left end of the rotating head 20 is connected to the upper end of a vertically positioned transmission rod 18 via a gear pair. The middle part of the transmission rod 18 is rotatably supported on the mounting base 1, and the lower end of the transmission rod 18 is connected to a rotating shaft 17 via a gear pair. The right end of the rotating head 20 is connected to a traction rod 22 via a flexible connector 21. Multiple flexible connectors 21, made of rubber, are evenly distributed along the circumference, allowing the rotational power of the traction rod 22 to be transmitted to the rotating head 20, while also allowing the traction rod 22 to transmit torque normally even when sliding left or right or slightly deflecting. A protective cover 16 is installed outside the transmission rod 18, placing the gear transmission portion inside the protective cover 16 to prevent soil splashes during trenching operation from affecting the normal transmission effect of the gears.

[0036] Limiting rings 23 are fixed to both sides of the traction rod 22. The limiting rings 23 are located on both sides of the rotating sleeve 25, and a thrust bearing is provided on the side closer to the rotating sleeve 25. When the traction rod 22 slides significantly relative to the rotating sleeve 25 (e.g., during uphill operation), the limiting rings 23 will abut against the end of the rotating sleeve 25, and relative rotation will be achieved through the thrust bearing, thereby directly transmitting the traction force to the mounting base 1. This prevents the flexible connector 21 from bearing excessive tension and provides protection.

[0037] In one instance of this embodiment, please refer to Figure 1 , Figure 7 , Figure 8 and Figure 9The lower end of the suspension rod 27 is provided with a direction adjustment component 34 for changing the pushing direction of the plow shovel 28. The direction adjustment component 34 includes a sleeve 30 fixedly connected to the lower end of the suspension rod 27. A left-right oriented rotating rod 29 is rotatably connected inside the sleeve 30. The right end of the rotating rod 29 is fixedly connected to the back of the plow shovel 28. A deflection handle 31 is sleeved on the left end of the rotating rod 29. The deflection handle 31 can slide left and right along the rotating rod 29 and can rotate with it. The side of the deflection handle 31 is connected to the side of the rotating rod 29 by a tension spring 32, which causes the deflection handle 31 to have a tendency to slide to the right. A front-back oriented limiting plate 33 is fixed on the lower left side of the suspension rod 27. The limiting plate 33 is U-shaped, and multiple limiting grooves 37 are opened on the right side of its inner wall along the front-back direction. When the deflection handle 31 moves to the right under the action of the tension spring 32, its end is engaged in the corresponding limiting groove 37, thereby locking the angle of the deflection handle 31 and fixing the orientation of the plow shovel 28.

[0038] The suspension rod 27 is slidably connected to the mounting base 1. A triangular push plate 36 is fixedly connected to the upper end of the suspension rod 27. A vertically arranged lifting screw 35 is rotatably connected to the left end of the triangular push plate 36. The middle part of the lifting screw 35 is threadedly connected to the left end of the mounting base 1. Rotating the lifting screw 35 can drive the triangular push plate 36 to move up and down, thereby adjusting the height of the suspension rod 27 and the plow 28, and changing the thickness of the ridged soil.

[0039] In one instance of this embodiment, please refer to Figure 1 and Figure 3 The height adjustment component 15 is used to adjust the height of the depth limiting wheel 8. Specifically, a deflection arm 9 is rotatably connected to the right side of the lower surface of the mounting base 1. The deflection arm 9 tilts downwards to the right, and its lower end is rotatably connected to the depth limiting wheel 8. A fixing block 12 is fixed to the right end of the lower surface of the mounting base 1, and a sliding rod 11 with a left-right orientation passes through the fixing block 12. The left end of the sliding rod 11 is rotatably connected to the right end of the top rod 10, and the left end of the top rod 10 is rotatably connected to the right side wall of the deflection arm 9. Multiple through-holes 13 are evenly distributed along the length of the sliding rod 11. U-shaped pins 14 pass through the positioning holes 13, with both ends of the U-shaped pins 14 located on the left and right sides of the fixing block 12, and are prevented from falling off by limiting pins. When the U-shaped pins 14 are inserted into different positions of the positioning holes 13, the relative position of the sliding rod 11 and the fixing block 12 is locked, thereby fixing the tilt angle of the deflection arm 9 and realizing multi-level adjustment of the height of the depth limiting wheel 8. This mechanical limiting structure is unaffected by splashing mud and has high reliability.

[0040] The specific working process of this trenching device is as follows, so that those skilled in the art can fully understand it; Step 1: Installation and Adjustment Transport the ditching device to the work site and place it on the left side of the tiller. Pull out the traction rod 22 to the right and rotate it up and down so that the connector 26 at its right end aligns with the power output shaft of the tiller. Insert the connecting pin to complete the connection. According to the required ditching depth for crop planting, pull out the U-shaped pin 14, adjust the extension length of the sliding rod 11 to make the depth limiting wheel 8 at a suitable height, and then reinsert the U-shaped pin 14 to lock it. According to the required ridge height and the thickness of the remaining soil at the bottom of the ditch, rotate the lifting screw 35 to adjust the height of the plow shovel 28 off the ground. According to the ridge direction "left or right", pull the deflection handle 31 to disengage it from the limiting groove 37, rotate the deflection handle 31 to the target direction and then release it. The tension spring 32 drives the deflection handle 31 to engage with the corresponding limiting groove 37, thus fixing the orientation of the plow shovel 28.

[0041] Step Two; Starting and Power Transmission When the mini-tiller is started, its power output shaft begins to rotate. The output shaft drives the traction rod 22 to rotate, which in turn drives the rotating head 20 to rotate via the flexible connector 21. The rotating head 20 drives the transmission rod 18 via a gear pair, which in turn drives the rotating shaft 17 to rotate via the gear pair, thereby causing the ditching blade 3 to rotate at high speed. At the same time, the mini-tiller moves forward to the "right," pulling the entire ditching device to move to the right.

[0042] Step 3: Soil Insertion and Depth Control In the initial stage of the trenching device's movement, because the positioning rod 7 is tilted downwards and to the right and is arc-shaped, its lower end first contacts the ground and gradually inserts into the soil. As the device continues to move to the right, the positioning rod 7 continues to penetrate deeper until the depth-limiting wheel 8 contacts the ground surface. Thereafter, the depth-limiting wheel 8 rolls along the ground, preventing the mounting base 1 from descending further, the positioning rod 7 stops inserting, and moves laterally with the device, its triangular cross-section cutting laterally in the soil, pre-forming a narrow trench.

[0043] Step 4: Trenching and Crushing After the positioning rod 7 breaks the soil laterally, the rotating trenching cutter 3 follows closely behind and enters the soil along the path already broken by the positioning rod 7. Because the movement paths of the trenching cutter 3 and the positioning rod 7 coincide, the trenching cutter 3 can cut and break the soil at high speed with relatively little resistance. Most of the broken soil is scattered at the bottom of the trench.

[0044] Step 5: Ridging and Shaping As the device continues to move to the right, the plowshare 28 on the left side comes into contact with the broken soil. The plowshare 28, according to a preset orientation, pushes the soil in the furrow to one side (left or right), forming continuous, regular ridges. A certain thickness of fine soil is retained at the bottom of the furrow to facilitate subsequent sowing or transplanting.

[0045] Step Six: Adaptation to Special Working Conditions When the trenching device encounters an uphill or downhill slope, the traction rod 22 undergoes a large axial displacement relative to the rotating sleeve 25. At this time, the limiting ring 23 abuts against the end of the rotating sleeve 25, and the traction force is directly transmitted to the mounting base 1 through the thrust bearing, preventing the flexible connector 21 from bearing excessive tension and ensuring the reliability of power transmission.

[0046] This invention provides a ditching device adapted for micro-tillers. Through the cooperation of an arc-shaped positioning rod 7 and a height-adjustable depth-limiting wheel 8, it achieves rapid multi-level adjustment of ditching depth to meet different agronomic needs. The positioning rod 7 has a triangular cross-section with an oblique angle, which pre-cuts the soil during lateral movement, significantly reducing the soil-breaking resistance of the ditching blade 3 and enhancing adaptability to hard soils. The two parallel positioning rods 7 simultaneously enter the soil, forming a guiding structure to ensure straight ditching. The flexible connector 21, in conjunction with the limiting ring 23 and thrust bearing, allows for axial sliding and deflection of the traction rod 22, and can directly transmit tension under high traction conditions such as climbing slopes, protecting the transmission components. The ridging mechanism 5 can adjust the orientation and height of the plow shovel 28 to achieve single-sided ridging and control of excess soil at the bottom of the ditch, integrating ditching, soil breaking, and ridging processes. The mechanical limiting structure is resistant to soil contamination and has high reliability. The overall structure is compact, operates flexibly and stably, and is highly practical.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. An opening device for a mini-tiller, comprising a mounting seat, a suspension plate is arranged in the middle of the mounting seat, and an opening knife is rotatably connected to the end of the suspension plate, characterized in that, The mounting base is provided with a traction drive assembly for power connection with the micro-tiller on the side near the micro-tiller, and also includes a ridging mechanism and a depth adjustment mechanism; The depth adjustment mechanism is used to adjust the ditching depth of the ditching blade. It includes a positioning rod fixedly connected to the mounting base on the side near the ground. The positioning rod extends at an angle toward the tiller and has an arc-shaped structure with a triangular cross-section. The end of the mounting base is equipped with a height-adjustable depth limiting wheel. The ridging mechanism includes a suspension rod located at the end of the mounting base away from the micro-tiller, and a plow blade is provided at the end of the suspension rod closer to the micro-tiller; When the ditching device moves with the micro-tiller, the positioning rod first inserts downward into the soil. After the depth-limiting wheel touches the ground and rolls along the ground surface, the positioning rod then breaks the soil laterally in the direction of forward movement.

2. The furrow opening device for a micro tillage machine of claim 1, wherein, Two trenching cutters are provided on the side of the mounting base closest to the ground. There are two positioning rods arranged in parallel. The trenching cutters and positioning rods move along the same trajectory in the direction of movement of the mounting base. A height adjustment component for adjusting the height of the depth limiting wheel is provided on the side of the mounting base closest to the ground.

3. The ditching device adapted for a micro-tiller according to claim 2, characterized in that, The height adjustment assembly includes a deflection arm rotatably connected to the mounting base. The end of the deflection arm is rotatably connected to the depth limiting wheel. A fixing block is fixedly connected to the side of the mounting base near the ground. A sliding rod is inserted into the fixing block. One end of the sliding rod near the deflection arm is rotatably connected to one end of a top rod. The other end of the top rod is rotatably connected to the side of the deflection arm. Multiple positioning holes are evenly distributed along the length of the sliding rod. U-shaped pins are detachably inserted into the positioning holes. The two ends of the U-shaped pins abut against the two sides of the fixing block, respectively.

4. The ditching device adapted for a micro-tiller according to claim 1, characterized in that, The traction drive assembly includes a rotating shaft rotatably connected to the end of the suspension plate, the end of the rotating shaft being fixedly connected to the trenching blade, a bearing seat being fixedly connected to the side of the mounting base away from the ground, a rotating sleeve being rotatably connected to the bearing seat, a traction rod that rotates synchronously with the rotating shaft being slidably inserted inside the rotating sleeve, and a connector for cooperating with the output end of the traction rod near the micro-tiller being provided.

5. A ditching device adapted for a micro-tiller according to claim 4, characterized in that, A vertical plate is provided in the middle of the mounting base, and a rotating head is rotatably connected to the end of the vertical plate. The end of the rotating head near the center of the mounting base is connected to one end of the transmission rod through a gear pair. The other end of the transmission rod is connected to the rotating shaft through a gear pair. The end of the rotating head near the traction rod is connected to one end of the flexible connector, and the other end of the flexible connector is connected to the end of the traction rod.

6. A ditching device adapted for a micro-tiller according to claim 1, characterized in that, The end of the suspension rod is provided with a direction adjustment component for adjusting the tilt angle of the plow blade.

7. A ditching device adapted for a micro-tiller according to claim 6, characterized in that, The direction adjustment assembly includes a sleeve fixedly connected to the end of the suspension rod near the ground. A rotating rod is rotatably connected inside the sleeve. The end of the rotating rod near the center of the mounting base is fixedly connected to the middle of the plowshare. The end of the rotating rod away from the mounting base is slidably connected to a deflection handle. The side of the deflection handle is connected to the side of the rotating rod via a tension spring. A limiting plate is fixedly connected to the side of the suspension rod. The inner side of the limiting plate has multiple limiting grooves that cooperate with the deflection handle.

8. A ditching device adapted for a micro-tiller according to claim 6, characterized in that, The suspension rod is slidably connected to the mounting base. A triangular push plate is fixedly connected to the end of the suspension plate away from the ground. A lifting screw is rotatably connected to the middle of the triangular push plate. The lifting screw is threadedly connected to the mounting base.

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