Double-disc furrow-opening no-till planter

Abstract

The utility model discloses a double disc ditching no -tillage seeding device, including frame, two gyroscopes of rotation installation on the frame, the transverse plate of fixed connection in frame one end, the push block of fixed connection in frame other end, set up in the seed tank on the frame, the fixed connection of at least two vertical blocks on the transverse plate and the fixed mechanism of fixed connection on the vertical block, be equipped with angle adjusting mechanism on the fixed mechanism, and the movable end of angle adjusting mechanism is fixedly connected with ditching mechanism, and angle adjusting mechanism is connected with U -shaped board, and the inner wall of U -shaped board is fixedly connected with U -shaped block, and two end parts of U -shaped block all are fixedly connected with L -shaped block, and the locking mechanism is commonly arranged on two L -shaped blocks. The utility model has the advantages of simple structure, convenient and reliable locking.

Description

Technical Field

[0001] This utility model relates to the field of agricultural seeding machinery technology, specifically a double-disc furrowing no-till seeding device. Background Technology

[0002] No-till seeding technology is a key component of conservation tillage. Due to its excellent stubble cutting and furrowing performance, the double-disc furrow opener is widely used in this type of seeding equipment. In actual operation, it is often necessary to adjust the opening angle of the double discs according to soil conditions, stubble coverage and agronomic requirements to change the furrow width and depth.

[0003] Currently, common structures for adjusting the opening angle of dual discs mainly rely on bolt locking or pin positioning. For example, the angle is changed by loosening or tightening multiple bolts connecting the trencher arm to the frame or to each other, and these bolts or additional pins are used for final fixation. In this type of adjustment, operators usually need to use tools to loosen, adjust and then tighten multiple connection points one by one. The steps are cumbersome, time-consuming and labor-intensive, and the adjustment accuracy depends on the operator's experience. At the same time, in the continuous vibration environment of the field, single bolt locking or pin positioning may have the risk of weakening of locking force or increased positioning gap, which may cause the preset opening angle to change unexpectedly during operation, affecting the trenching quality.

[0004] Therefore, it is necessary to improve the angle adjustment and fixing mechanism of the existing double-disc furrow opener in order to further simplify the adjustment operation and improve the convenience of field adjustment while ensuring the reliability of angle locking after adjustment. Utility Model Content

[0005] The purpose of this invention is to provide a double-disc furrowing no-till seeding device, which has the advantages of simple structure, convenient adjustment and reliable locking, and solves the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A double-disc furrowing no-till seeding device includes a frame, two rollers rotatably mounted on the frame, a horizontal plate fixed to one end of the frame, a push block fixed to the other end of the frame, a seed box set on the frame, at least two vertical blocks fixed to the horizontal plate, and a fixing mechanism fixed to the vertical blocks. The fixed mechanism is equipped with an angle adjustment mechanism. The moving end of the angle adjustment mechanism is fixedly connected to a trenching mechanism. A U-shaped plate is connected to the angle adjustment mechanism. A U-shaped block is fixedly connected to the inner wall of the U-shaped plate. An L-shaped block is fixedly connected to both ends of the U-shaped block. A locking mechanism is provided on both L-shaped blocks.

[0007] Preferably, the fixing mechanism includes a mounting block fixed to the upright block and a rotating body rotatably mounted on the mounting block.

[0008] It is worth noting that the mounting block and the upright block are firmly fixed together, which can effectively bear the soil reaction force generated during ditching operations, improve the load-bearing strength of the overall structure, and adapt to the complex environment of straw residue and uneven soil hardness during no-till seeding. The structure is simple and compact, easy to process and assemble, which can reduce production and manufacturing costs. At the same time, the rotation is precise, which can avoid deviation during the adjustment process, ensure the accuracy of ditching angle adjustment, and extend the overall service life of the device.

[0009] Preferably, the angle adjustment mechanism includes a first hinge seat fixed to the lower part of both sides of the rotating body, a movable block hinged to the first hinge seat, a second hinge seat fixed to the upper end of the movable block, a first movable arm hinged to the second hinge seat, a first fixed post fixed to the upper end of the first movable arm, and a first fixed plate fixed to the upper end of the first fixed post. U-shaped plates are fixed to the middle of both sides of the rotating body, and the lower end of the U-shaped plate is fixed to the upper end of the first fixed plate.

[0010] It is worth noting that this angle adjustment structure achieves flexible multi-angle adjustment through multiple sets of hinges. The hinge design between the first hinge seat and the movable block, and between the first movable arm and the second hinge seat, can meet the requirements of different furrowing angles and adapt to various soil conditions and sowing row spacing requirements. The first fixed column and the first fixed plate firmly connect the first movable arm and the U-shaped plate to form a closed-loop support system, which can effectively disperse the force during furrowing, avoid angle deviation after adjustment, and ensure operational stability.

[0011] Preferably, the angle adjustment mechanism further includes a third hinge seat fixed to the upper part of both sides of the rotating body, a second movable arm hinged to the third hinge seat, a second fixed column fixed to the lower end of the second movable arm, and a second fixed plate fixed to the lower end of the second fixed column, the lower end of the second fixed plate being fixed to the upper end of the U-shaped plate.

[0012] It is worth noting that this structure forms a symmetrical and coordinated design with the lower angle adjustment component, which further expands the adjustment range of the trenching angle and improves the adjustment flexibility. The hinged cooperation between the third hinge seat and the second movable arm makes the angle adjustment more stable. The second fixed column and the second fixed plate firmly connect the second movable arm and the U-shaped plate, forming a double-support stable structure, which makes the entire angle adjustment mechanism evenly stressed, effectively resists the impact load during trenching operations, and avoids the problem of easy deformation of a single support structure.

[0013] Preferably, the trenching mechanism includes a central column fixed to the end of the movable block away from the rotating body and a trenching disc rotatably mounted on the outer peripheral wall of the central column.

[0014] It is worth noting that the central column provides a precise installation reference for the furrowing disc, which is firmly fixed to the movable block to ensure stable force transmission during furrowing and avoid wobbling. The rotating installation design of the furrowing disc greatly reduces frictional resistance with the soil, reduces energy consumption, and can adapt to soil undulations to ensure uniform furrowing depth, avoiding uneven furrow depth from affecting sowing quality.

[0015] Preferably, the U-shaped plate, U-shaped block, and L-shaped block are all made of deformable metal material.

[0016] It is worth noting that the use of deformable metal materials not only ensures the structural strength of the components, enabling them to withstand the forces during trenching operations, but also possesses a moderate elastic deformation capacity. This allows for easy adjustment of the U-shaped plate opening size via the locking mechanism, enabling rapid adjustment of the trenching disc angle. After deformation, the material maintains a stable shape, ensuring that the locked angle is not easily deviated, thus guaranteeing operational stability. The metal material also exhibits strong wear and corrosion resistance, resisting erosion from field soil and moisture, preventing component rust or wear that could lead to adjustment failure, and extending its service life. Furthermore, the deformable nature allows the components to absorb energy through slight deformation when subjected to impact, reducing structural damage and enhancing the device's impact resistance, making it suitable for long-term, high-intensity field operations.

[0017] Preferably, the locking mechanism includes multiple threaded holes through the L-shaped blocks, bolts threaded onto the inner walls of two corresponding threaded holes on the two L-shaped blocks, and a first nut threaded onto the outer peripheral wall of the bolt. The lower end of the first nut abuts against the upper end of the L-shaped blocks, and the first nut is used to fix the bolts onto the two L-shaped blocks.

[0018] It is worth noting that the multiple screw holes provide multiple angle adjustment settings, allowing for precise adjustment of the U-shaped plate opening size according to actual operational needs. This enables fine-grained control of the trenching angle. The threaded engagement of the bolts and screw holes, combined with the locking action of the first nut, allows for quick and easy locking. The operation is simple and efficient, and the locking effect is robust, effectively resisting vibrations during operation and preventing angle deviation caused by bolt loosening. The threaded connection structure facilitates disassembly and maintenance; when components wear out or angle adjustments are needed, quick disassembly and assembly can be performed, reducing maintenance costs. This locking mechanism has a simple structure, low manufacturing cost, and good compatibility with deformable metal parts, achieving efficient coordination between angle adjustment and locking, ensuring the stability of the device's operation.

[0019] Preferably, the locking mechanism includes a plurality of threaded holes through the L-shaped block, a threaded post threaded on the inner wall of the two corresponding threaded holes on the two L-shaped blocks, a second nut threaded on the outer peripheral wall of the threaded post, and at least one retaining ring threaded on the outer peripheral wall of the second nut. The upper end face of the retaining ring abuts against the lower end face of the upper L-shaped block, and the upper end face of the second nut abuts against the lower end face of the lower L-shaped block.

[0020] It is worth noting that the locking mechanism adopts a double locking design of the second nut and the retaining ring, which greatly improves the locking reliability. The retaining ring and the second nut limit and fix the L-shaped blocks from the top and bottom, respectively, making the connection between the two L-shaped blocks more secure. This effectively resists vibration and impact during field operations and prevents angle deviation. Multiple screw holes with threaded posts can achieve precise adjustment of the trenching angle. The multiple retaining rings can adjust the locking force according to actual needs and adapt to components with different degrees of deformation. The threaded connection structure is easy to disassemble, facilitating subsequent maintenance and angle adjustment, and improving the ease of use of the device. This structure has a strong load-bearing capacity and is suitable for long-term high-intensity field operations.

[0021] Preferably, two rollers are symmetrically arranged on both sides of the frame, and the seed box is fixed to the upper middle part of the frame.

[0022] Preferably, the two grooved discs are arranged symmetrically facing each other about the upright block.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model enables rapid adjustment of the trenching angle. By setting up an elastic deformation component consisting of a U-shaped plate, a U-shaped block, and an L-shaped block, and cooperating with a locking mechanism with multiple positioning screw holes, during operation, it is only necessary to loosen the locking mechanism and manually change the opening degree of the U-shaped plate to drive the angle adjustment mechanism rigidly connected to it to move, thereby directly and continuously changing the opening angle between the two trenching discs. This process does not require disassembling and adjusting multiple independent locking parts one by one, which significantly simplifies the operation steps and greatly improves the efficiency of field adjustment. 2. Since key components such as the U-shaped plate are made of deformable metal materials, they can provide stable restoring force after deformation within the elastic range. The bolts (or threaded posts) and nuts in the locking mechanism cooperate to firmly press the two L-shaped blocks together through the threaded locking force, forming a rigid constraint on the elastic deformation components from the top and bottom sides. This effectively offsets the alternating loads generated by soil resistance and machine vibration during operation, prevents loosening of the connection and angle rebound, and ensures the consistency of the preset trench width and depth throughout the operation. Attached Figure Description

[0024] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a three-dimensional structural schematic of the mounting block of this utility model; Figure 3 The image shown is a front view of the angle adjustment mechanism of this utility model; Figure 4 The image shown is a front view of the U-shaped block of this utility model; Figure 5The diagram shown is a three-dimensional structural schematic of the first embodiment of the locking mechanism of this utility model; Figure 6 The diagram shown is a three-dimensional structural schematic of a second embodiment of the locking mechanism of this utility model.

[0025] Reference numerals: 1. Frame; 2. Roller; 3. Horizontal plate; 4. Push block; 5. Seed box; 6. Vertical block; 7. Mounting block; 8. Rotating body; 9. First hinge seat; 10. Movable block; 11. Central column; 12. Grooving disc; 13. Second hinge seat; 14. First movable arm; 15. First fixed column; 16. First fixed plate; 17. Third hinge seat; 18. Second movable arm; 19. Second fixed column; 20. Second fixed plate; 21. U-shaped plate; 22. U-shaped block; 23. L-shaped block; 24. Bolt; 25. First nut; 26. Threaded column; 27. Second nut; 28. Retaining ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To address the problems of cumbersome and inefficient operation in the existing dual-disc opening angle adjustment process, as well as the ease with which the adjusted angle can loosen and lack stability under vibration, the following technical solution is proposed. Please refer to [link / reference needed]. Figures 1-6 ; A double-disc furrowing no-till seeding device includes a frame 1, two rollers 2 rotatably mounted on the frame 1, a horizontal plate 3 fixed to one end of the frame 1, a push block 4 fixed to the other end of the frame 1, a seed box 5 set on the frame 1, at least two vertical blocks 6 fixed to the horizontal plate 3, and a fixing mechanism fixed to the vertical blocks 6. The fixed mechanism is equipped with an angle adjustment mechanism. The moving end of the angle adjustment mechanism is fixedly connected to a trenching mechanism. A U-shaped plate 21 is connected to the angle adjustment mechanism. A U-shaped block 22 is fixedly connected to the inner wall of the U-shaped plate 21. An L-shaped block 23 is fixedly connected to both ends of the U-shaped block 22. A locking mechanism is provided on both L-shaped blocks 23.

[0028] In use, the locking mechanism is adjusted to open or close the opening of the U-shaped plate 21, thereby enabling rapid adjustment of the angle of the grooved disc 12.

[0029] In this embodiment, specifically: the fixing mechanism includes a mounting block 7 fixed to the upright block 6 and a rotating body 8 rotatably mounted on the mounting block 7.

[0030] In this embodiment, specifically: the angle adjustment mechanism includes a first hinge seat 9 fixed to the lower part of both sides of the rotating body 8, a movable block 10 hinged to the first hinge seat 9, a second hinge seat 13 fixed to the upper end of the movable block 10, a first movable arm 14 hinged to the second hinge seat 13, a first fixed post 15 fixed to the upper end of the first movable arm 14, and a first fixed plate 16 fixed to the upper end of the first fixed post 15. U-shaped plates 21 are fixed to the middle of both sides of the rotating body 8, and the lower end of the U-shaped plate 21 is fixed to the upper end of the first fixed plate 16.

[0031] In this embodiment, specifically: the angle adjustment mechanism further includes a third hinge seat 17 fixed to the upper part of both sides of the rotating body 8, a second movable arm 18 hinged to the third hinge seat 17, a second fixed column 19 fixed to the lower end of the second movable arm 18, and a second fixed plate 20 fixed to the lower end of the second fixed column 19. The lower end of the second fixed plate 20 is fixed to the upper end of the U-shaped plate 21.

[0032] It should be noted that the U-shaped plate 21 is located in the middle of the side of the rotating body 8 and is fixedly connected to the first fixed plate 16 and the second fixed plate 20 respectively to form a stable support structure.

[0033] In this embodiment, specifically: the trenching mechanism includes a central column 11 fixed to one end of the movable block 10 away from the rotating body 8 and a trenching disk 12 rotatably mounted on the outer peripheral wall of the central column 11.

[0034] In this embodiment, specifically: the U-shaped plate 21, the U-shaped block 22, and the L-shaped block 23 are all made of deformable metal materials.

[0035] In this embodiment, specifically: two rollers 2 are symmetrically arranged on both sides of the frame 1, and the seed box 5 is fixed above the middle part of the frame 1.

[0036] In this embodiment, specifically: two grooved discs 12 are arranged symmetrically about the upright block 6.

[0037] Example 1: In this example, the locking mechanism specifically includes multiple screw holes through the L-shaped block 23, bolts 24 threadedly installed on the inner walls of the two screw holes corresponding to the two L-shaped blocks 23, and a first nut 25 threadedly installed on the outer peripheral wall of the bolt 24. The lower end of the first nut 25 abuts against the upper end of the L-shaped block 23, and the first nut 25 is used to fix the bolt 24 on the two L-shaped blocks 23.

[0038] The locking mechanism has a simple structure. By selecting the screw holes at different positions on the two L-shaped blocks 23 and inserting the bolt 24, the basic opening degree of the U-shaped plate 21 can be quickly set, and the trenching angle can be adjusted in stages. Tightening the first nut 25 can use the axial locking force generated by the thread pair to tightly fit the two L-shaped blocks 23 together. Thus, the elastic deformation state of the U-shaped plate 21 is fixed by the L-shaped blocks 23 and the U-shaped blocks 22, and the locking is reliable. The entire adjustment and locking process only requires the operation of one bolt 24 and one first nut 25. The tools are universal, which greatly simplifies the operation steps and significantly improves the efficiency of field adjustment.

[0039] Example 2: In this example, the locking mechanism specifically includes multiple threaded holes through the L-shaped block 23, threaded posts 26 threadedly installed on the inner walls of the two corresponding threaded holes on the two L-shaped blocks 23, a second nut 27 threadedly installed on the outer peripheral wall of the threaded post 26, and at least one retaining ring 28 threadedly installed on the outer peripheral wall of the second nut 27. The upper end face of the retaining ring 28 abuts against the lower end face of the upper L-shaped block 23, and the upper end face of the second nut 27 abuts against the lower end face of the lower L-shaped block 23.

[0040] This locking mechanism offers superior anti-loosening and load-bearing performance. The threaded post 26, the second nut 27, and at least one retaining ring 28 together form a two-way locking system. The second nut 27 presses against the lower L-shaped block 23 from below, while the retaining ring 28 presses against the upper L-shaped block 23 from above, thus applying constraint force to the L-shaped block 23 from both directions simultaneously, forming a two-way locking. This design can more effectively resist vibrations and impacts from multiple directions during operation, preventing the threaded connection from loosening due to unidirectional force, making the angle lock extremely stable. The coordinated use of multiple retaining rings 28 allows for fine-tuning of the locking preload to adapt to different operational intensity requirements, further enhancing the reliability and service life of the device.

[0041] Working principle: When it is necessary to adjust the opening angle of the two grooved discs 12, first loosen the locking mechanism; For the structure in Embodiment 1, the first nut 25 is loosened so that the bolt 24 and the screw holes on the two L-shaped blocks 23 are in a state where they can slide relative to each other. For the structure in Embodiment 2, that is, loosening the second nut 27 so that the threaded post 26 and the threaded hole of the L-shaped block 23, as well as the retaining ring 28 and the threaded post 26 are all in an adjustable state, then the operator can manually apply force to the U-shaped plate 21 or its connecting parts. Since the U-shaped plate 21, U-shaped block 22 and L-shaped block 23 are all made of deformable metal material, the force will cause the opening of the U-shaped plate 21 to undergo elastic deformation, thereby driving the first fixed plate 16 and the second fixed plate 20 fixed thereon to move. The first fixed plate 16 drives the first movable arm 14 through the first fixed post 15, and the second fixed plate 20 drives the second movable arm 18 through the second fixed post 19. The first movable arm 14 and the second movable arm 18 swing around their hinge points with the third hinge seat 17 and the second hinge seat 13, respectively. This movement is transmitted to the movable block 10 through the first movable arm 14 and the second hinge seat 13, forcing the movable block 10 to rotate around its hinge point with the first hinge seat 9, thereby driving the central column 11 fixed to the end of the movable block 10 and the grooved disc 12 mounted on it to change the spatial angle, so as to realize the stepless continuous adjustment of the opening and closing angle between the two grooved discs 12. After the angle is adjusted to the correct position, the locking mechanism must be tightened to fix the position. In embodiment 1, the screw holes on the two L-shaped blocks 23 corresponding to the target opening are aligned, the bolts 24 are inserted, and the first nut 25 is tightened so that its lower end face abuts against the upper end face of the L-shaped block 23. The head of the bolt 24 and the first nut 25 together generate an axial clamping force, forcing the two L-shaped blocks 23 to fit tightly together, thereby locking the U-shaped plate 21 in the current elastic deformation state through the U-shaped block 22. In embodiment 2, by tightening the second nut 27, which is threaded onto the outer peripheral wall of the threaded post 26, its upper end face is pressed against the lower end face of the L-shaped block 23 located below. Meanwhile, at least one retaining ring 28 (two retaining rings 28 may be provided in a preferred embodiment) is threadedly installed on the threaded post 26 below the upper L-shaped block 23, and the retaining ring 28 is tightened so that its upper end face abuts against the lower end face of the upper L-shaped block 23. The second nut 27 and the retaining ring 28 exert force on the threaded post 26, forming a rigid clamp on the two L-shaped blocks 23 from both the top and bottom directions. This bidirectional locking force is transmitted through the L-shaped block 23 and the U-shaped block 22, strongly constraining the deformation of the U-shaped plate 21, thereby achieving a highly reliable locking of the trenching angle and effectively resisting vibrations during field operations. The entire device, through the mechanism combining the above-mentioned "elastic deformation adjustment" and "rigid thread locking", ultimately achieves rapid and precise adjustment of the trenching disc 12 angle and long-term stable maintenance during operation.

[0042] 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 process, method, article, or apparatus.

[0043] Although embodiments of the present 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 present invention.

Claims

1. A double-disc furrowing no-till seeding device, characterized in that: It includes a frame (1), two rollers (2) rotatably mounted on the frame (1), a horizontal plate (3) fixed to one end of the frame (1), a push block (4) fixed to the other end of the frame (1), a seed box (5) set on the frame (1), at least two vertical blocks (6) fixed to the horizontal plate (3) and a fixing mechanism fixed to the vertical blocks (6); An angle adjustment mechanism is provided on the fixed mechanism. A trenching mechanism is fixed to the moving end of the angle adjustment mechanism. A U-shaped plate (21) is connected to the angle adjustment mechanism. A U-shaped block (22) is fixed to the inner wall of the U-shaped plate (21). An L-shaped block (23) is fixed to both ends of the U-shaped block (22). A locking mechanism is provided on both L-shaped blocks (23).

2. The double-disc furrowing no-till seeding device according to claim 1, characterized in that: The fixing mechanism includes a mounting block (7) fixed to the upright block (6) and a rotating body (8) rotatably mounted on the mounting block (7).

3. The double-disc furrowing no-till seeding device according to claim 2, characterized in that: The angle adjustment mechanism includes a first hinge seat (9) fixed to the lower part of both sides of the rotating body (8), a movable block (10) hinged to the first hinge seat (9), a second hinge seat (13) fixed to the upper end of the movable block (10), a first movable arm (14) hinged to the second hinge seat (13), a first fixed column (15) fixed to the upper end of the first movable arm (14), and a first fixed plate (16) fixed to the upper end of the first fixed column (15). A U-shaped plate (21) is fixed to the middle part of both sides of the rotating body (8), and the lower end of the U-shaped plate (21) is fixed to the upper end of the first fixed plate (16).

4. The double-disc furrowing no-till seeding device according to claim 3, characterized in that: The angle adjustment mechanism also includes a third hinge seat (17) fixed to the upper part of both sides of the rotating body (8), a second movable arm (18) hinged to the third hinge seat (17), a second fixed column (19) fixed to the lower end of the second movable arm (18), and a second fixed plate (20) fixed to the lower end of the second fixed column (19). The lower end of the second fixed plate (20) is fixed to the upper end of the U-shaped plate (21).

5. The double-disc furrowing no-till seeding device according to claim 1, characterized in that: The trenching mechanism includes a central column (11) fixed to one end of the movable block (10) away from the rotating body (8) and a trenching disc (12) rotatably mounted on the outer peripheral wall of the central column (11).

6. The double-disc furrowing no-till seeding device according to claim 1, characterized in that: The U-shaped plate (21), U-shaped block (22) and L-shaped block (23) are all made of deformable metal material.

7. The double-disc furrowing no-till seeding device according to claim 1, characterized in that: The locking mechanism includes multiple threaded holes through the L-shaped block (23), bolts (24) threaded onto the inner walls of the two corresponding threaded holes on the two L-shaped blocks (23), and a first nut (25) threaded onto the outer peripheral wall of the bolt (24). The lower end of the first nut (25) abuts against the upper end of the L-shaped block (23), and the first nut (25) is used to fix the bolt (24) onto the two L-shaped blocks (23).

8. The double-disc furrowing no-till seeding device according to claim 1, characterized in that: The locking mechanism includes multiple threaded holes through the L-shaped block (23), threaded post (26) threaded on the inner walls of the two corresponding threaded holes on the two L-shaped blocks (23), a second nut (27) threaded on the outer peripheral wall of the threaded post (26), and at least one retaining ring (28) threaded on the outer peripheral wall of the second nut (27). The upper end face of the retaining ring (28) abuts against the lower end face of the upper L-shaped block (23), and the upper end face of the second nut (27) abuts against the lower end face of the lower L-shaped block (23).

9. The double-disc furrowing no-till seeding device according to claim 1, characterized in that: Two rollers (2) are symmetrically arranged on both sides of the frame (1), and the seed box (5) is fixed above the middle part of the frame (1).

10. A double-disc furrowing no-till seeding device according to claim 5, characterized in that: Two grooved discs (12) are symmetrically arranged facing each other about the upright block (6).

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