No-tillage seeding device capable of adjusting row spacing

Abstract

The utility model discloses a no-tillage seeding device capable of adjusting row spacing. Comprising a rack, two rollers rotationally arranged on the rack, a seed box fixedly connected to the upper end of the rack, a first guide rod fixedly connected to one end of the rack, two first sleeve blocks arranged on the side wall of the first guide rod in a sleeving mode, a ditching mechanism fixedly connected to the first sleeve blocks and a row spacing adjusting mechanism arranged on the rack and the first guide rod. The first guiding mechanisms are arranged on the first sleeve blocks, the auxiliary positioning mechanism is arranged at one end of the rack and used for positioning the two first guiding mechanisms at the same time, the second connecting block is fixedly connected to the side wall of the ditching mechanism, the fixing frame is fixedly connected to the side wall of the second connecting block, the press wheel is rotationally arranged on the fixing frame, and a seed discharging pipe is further fixedly connected to the fixing frame; and the other end of the rack is provided with a second guide mechanism for guiding the seed metering pipe in the horizontal direction. The row spacing adjusting device has the advantages of being fast and efficient in row spacing adjustment, accurate, reliable and labor-saving in operation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural seeding machinery technology, specifically to an adjustable row spacing no-till seeding device. Background Technology

[0002] No-till seeding is an agricultural technique that involves direct seeding on undisturbed land. It effectively protects soil structure, reduces water evaporation, and improves operational efficiency. Existing no-till seeding devices typically consist of a main load-bearing beam frame and multiple seeding units arranged longitudinally along the beam frame. Each seeding unit integrates key components such as a stubble-breaking disc, a furrow opener, a seed metering device, a seed-fertilizer box, and a compaction wheel. During operation, the stubble-breaking disc first cuts off the surface stubble and straw, then the furrow opener creates seed furrows, the seed metering device precisely introduces the seeds, and finally, the compaction wheel compacts the soil to facilitate seed germination. To adapt to undulating terrain, the seeding units are often connected to the main beam via a parallel four-bar linkage and equipped with a height adjustment mechanism to allow the furrow opener to conform to the terrain and maintain stable depth control. The device is typically driven by a drive wheel, which supplies power to components such as the seed metering device.

[0003] However, in actual agricultural production, it is often necessary to adjust the row spacing for sowing to adapt to the agronomic requirements of different crops and regions. In existing sowing devices, the installation position of the individual sowing units on the beam frame is usually fixed or can only be adjusted within a limited range. When it is necessary to change the row spacing, the operator must manually loosen the fasteners of each sowing unit, move the unit to the target position based on experience, and then re-secure it. This process is not only time-consuming and labor-intensive, but also makes it difficult to guarantee adjustment accuracy. Furthermore, it is prone to displacement during operation due to loose fasteners, affecting sowing quality, and requires further improvement. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable row spacing no-till seeding device, which has the advantages of fast and efficient row spacing adjustment, precision and reliability, and labor-saving operation, thus solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable row spacing no-till seeding device includes a frame, two rollers rotatably mounted on the frame, a seed box fixed to the upper end of the frame, a first guide rod fixed to one end of the frame, two first blocks sleeved on the side wall of the first guide rod, a furrowing mechanism fixed to the first blocks, a row spacing adjustment mechanism mounted on the frame and the first guide rod, a first guide mechanism mounted on the first blocks, an auxiliary positioning mechanism mounted at one end of the frame for simultaneously positioning the two first guide mechanisms, a second connecting block fixed to the side wall of the furrowing mechanism, a fixed frame fixed to the side wall of the second connecting block, and a pressing wheel rotatably mounted on the fixed frame. A seed metering pipe is also fixed to the fixed frame, and a second guide mechanism for guiding the seed metering pipe in the horizontal direction is provided at the other end of the frame.

[0007] Preferably, the trenching mechanism includes a first connecting rod fixed to the lower end of the first set block, a first fixing block fixed to the lower end of the first connecting rod, and trenching discs rotatably mounted on both sides of the first fixing block.

[0008] It is worth noting that the trenching mechanism achieves a rigid connection between the trenching disc and the first block through the first connecting rod, ensuring the effective transmission of force and structural stability during trenching operations. The two symmetrically arranged trenching discs can effectively break through the straw and soil to form neat planting trenches, creating excellent conditions for seed germination.

[0009] Preferably, the row spacing adjustment mechanism includes two second fixed blocks fixed to the outer peripheral wall of the first guide rod, a movable block hinged to each of the second fixed blocks, a first connecting block hinged at one end to the movable block, a second limiting post fixed to one end of the movable block, and two one-way cylinders hinged to one end of the frame. The output end of each one-way cylinder is hinged to the outer peripheral wall of a second limiting post, and the other end of each first connecting block is hinged to a first sleeve block.

[0010] It is worth noting that the row spacing adjustment mechanism, through the combination of cylinder drive, connecting rod and hinge structure, efficiently converts linear motion into precise lateral movement of the first set of blocks along the first guide rod. This design enables simultaneous adjustment of the row spacing of multiple furrowing units at one time. The adjustment process is fast, labor-saving and highly synchronized, significantly improving work efficiency and adaptability to different agronomic requirements.

[0011] Preferably, the row spacing adjustment mechanism further includes a first limiting frame fixed to one end of the frame and a first limiting post fixed to one end of the moving block. The first limiting post is L-shaped and is slidably disposed on the inner wall of the first limiting frame.

[0012] It is worth noting that the added first limiting frame and the L-shaped first limiting post constitute the auxiliary guiding and constraint mechanism of the moving block. The first limiting frame effectively restricts the rotational freedom of the moving block during the movement process, ensuring that its movement trajectory strictly follows the preset path, thereby improving the stability and efficiency of cylinder thrust transmission, preventing mechanism jamming, and enhancing the controllability and reliability of the entire line spacing adjustment process.

[0013] Preferably, the row spacing adjustment mechanism further includes a support block fixed to one end of the frame and a second limiting frame fixed to the support block, wherein the outer peripheral wall of the second limiting post is slidably disposed on the inner wall of the second limiting frame.

[0014] It is worth noting that by setting a second limiting frame to constrain the second limiting post, a stable and reliable guiding support is provided for the cylinder output end. This structure effectively counteracts the radial force borne by the cylinder piston rod, prevents the piston rod from bending or wearing due to non-axial force, and extends the service life of the cylinder.

[0015] Preferably, the first guiding mechanism includes a fixed post fixed to the first sleeve block, an ear plate fixed to the outer peripheral wall of the fixed post, and a first guide plate fixed to the ear plate near one end of the frame, wherein the first guide plate and the frame are close to each other at their respective ends.

[0016] It is worth noting that the first guiding mechanism provides crucial lateral support for the first set of blocks by tightly fitting the first guide plate against the side wall of the frame. This structure significantly enhances the anti-tilting and anti-torsion capabilities of the first set of blocks and the ditching mechanism they support during adjustment and operation, effectively offsetting the huge lateral resistance generated when the ditching disc cuts into the soil, and ensuring the accuracy of the sowing row spacing and the uniformity of the working depth.

[0017] Preferably, the auxiliary positioning mechanism includes a bidirectional cylinder fixed to one end of the frame, a pressure plate fixed to the two output ends of the bidirectional cylinder, and a limiting block fixed to one end of the frame. A limiting groove is formed through one side of the pressure plate, the inner wall of the limiting groove and the side wall of the limiting block are in contact, and the ends of the pressure plate and the first guide plate that are close to each other abut against each other.

[0018] It is worth noting that the auxiliary positioning mechanism uses a bidirectional cylinder to drive the pressure plate, enabling rapid clamping and release of the first guide plate. The cooperation between the limit block and the upper limit groove of the pressure plate ensures the accuracy of the pressure plate's movement trajectory and prevents it from deflecting. After the row spacing is adjusted, this mechanism can quickly provide a strong locking force to stabilize the trenching mechanism in the set position, completely preventing it from shifting due to vibration or soil resistance during operation, and ensuring the long-term stability of the row spacing.

[0019] Preferably, the second guiding mechanism includes two second guide rods fixed to the other end of the frame, a second sleeve block sleeved on the outer peripheral wall of the second guide rod, a second guide plate fixed to the second sleeve block near one end of the frame, and springs fixed to the inner walls on both sides of the frame. The springs are sleeved on the outside of the second guide rods, and the ends of the two springs that are close to each other are fixed to the ends of the two second sleeve blocks that are far apart from each other. The feed end of the seed metering pipe is connected to the discharge end of the seed box through a hose.

[0020] It is worth noting that the second guiding mechanism, through the cooperation of the second guide rod and the second sleeve block, provides precise horizontal guidance for the seed metering tube, ensuring that it can move laterally synchronously with the furrowing mechanism. The spring arrangement realizes the automatic centering and flexible buffering of the second sleeve block, which can effectively absorb vibrations during operation and prevent the seed metering tube from jamming or being damaged. The seed metering tube is connected to the seed box through a flexible hose, which cleverly solves the problem of seed transportation between the fixed seed box and the moving seed metering tube. The flexibility of the hose ensures the freedom of row spacing adjustment and the continuity of seed flow.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model sets up a row spacing adjustment mechanism driven by a cylinder. The extension and retraction of the one-way cylinder drives the moving block and the first connecting block to move, thereby synchronously driving all the first set of blocks and the furrowing mechanism on them to move precisely along the first guide rod. This realizes the function of adjusting all sowing row spacing at one time, completely changing the traditional manual adjustment method, making the row spacing adjustment process fast, labor-saving and ensuring the consistency of each sowing row spacing.

[0023] 2. This utility model, by setting a first guide mechanism connected to the first set of blocks and a limiting frame mechanism connected to the moving block, ensures that the first guide plate is always in contact with the side wall of the frame. The first limiting frame and the second limiting frame respectively constrain the first limiting post and the second limiting post, providing multi-level guidance and limiting protection for the row spacing adjustment process, effectively preventing the shaking and deflection of the components during the adjustment process, and significantly improving the accuracy and reliability of the adjustment.

[0024] 3. This utility model, by setting an auxiliary positioning mechanism driven by a bidirectional cylinder, can quickly drive the pressure plate to press the first guide plate after the row spacing is adjusted. Combined with the elastic support and guiding effect of the second guide mechanism on the seeding pipe, it forms a double locking and buffering system in the working state, which effectively resists vibration and soil resistance during operation, prevents work displacement, and ensures that the set row spacing is maintained stably throughout the entire sowing operation. Attached Figure Description

[0025] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0026] Figure 2The diagram shown is a three-dimensional structural schematic of the row spacing adjustment mechanism of this utility model.

[0027] Figure 3 The diagram shown is a three-dimensional structural schematic of the auxiliary positioning mechanism of this utility model.

[0028] Figure 4 The diagram shown is a three-dimensional structural schematic of the first guiding mechanism of this utility model.

[0029] Figure 5 The diagram shown is a three-dimensional structural schematic of the second connecting block of this utility model;

[0030] Figure 6 The diagram shown is a three-dimensional structural schematic of the second guide mechanism of this utility model.

[0031] Reference numerals in the attached drawings: 1. Frame; 2. Roller; 3. Seed box; 4. First guide rod; 5. First sleeve block; 6. First connecting rod; 7. First fixing block; 8. Grooving disc; 9. Second fixing block; 10. Moving block; 11. First connecting block; 12. First limiting frame; 13. First limiting post; 14. Support block; 15. Second limiting frame; 16. Second limiting post; 17. One-way cylinder; 18. Two-way cylinder; 19. Pressure plate; 20. Limiting block; 21. Fixing post; 22. Ear plate; 23. First guide plate; 24. Second connecting block; 25. Fixing frame; 26. Pressing wheel; 27. Seed metering tube; 28. Second guide rod; 29. ​​Second sleeve block; 30. Second guide plate; 31. Spring. Detailed Implementation

[0032] 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.

[0033] To address the problems of time-consuming and labor-intensive row spacing adjustment, difficulty in ensuring accuracy, and susceptibility to displacement during operation in existing technologies, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-6 ;

[0034] An adjustable row spacing no-till seeding device includes a frame 1, two rollers 2 rotatably mounted on the frame 1, a seed box 3 fixed to the upper end of the frame 1, a first guide rod 4 fixed to one end of the frame 1, two first sleeve blocks 5 sleeved on the side wall of the first guide rod 4, a furrowing mechanism fixed to the first sleeve blocks 5, a row spacing adjustment mechanism mounted on the frame 1 and the first guide rod 4, a first guide mechanism mounted on the first sleeve blocks 5, an auxiliary positioning mechanism mounted at one end of the frame 1 for simultaneously positioning the two first guide mechanisms, a second connecting block 24 fixed to the side wall of the furrowing mechanism, a fixing frame 25 fixed to the side wall of the second connecting block 24, and a pressing wheel 26 rotatably mounted on the fixing frame 25. A seed metering pipe 27 is also fixedly mounted on the fixing frame 25, and a second guide mechanism for guiding the seed metering pipe 27 in the horizontal direction is provided at the other end of the frame 1.

[0035] In use, the trenching mechanism can be adjusted through the row spacing adjustment mechanism. The trenching mechanism is fixed to the second connecting block 24 and the fixed frame 25, so the position of the pressing wheel can be adjusted at the same time. This allows for one-time adjustment of the positions of the trenching mechanism, the fixed frame 25 and the pressing wheel, facilitating quick adjustment of the row spacing. During the adjustment process, the first guide mechanism and the second guide mechanism can improve the stability of the adjustment process, and activating the auxiliary positioning mechanism can improve the stability after adjustment.

[0036] In this embodiment, specifically: the trenching mechanism includes a first connecting rod 6 fixed to the lower end of the first sleeve block 5, a first fixing block 7 fixed to the lower end of the first connecting rod 6, and trenching discs 8 rotatably mounted on both sides of the first fixing block 7.

[0037] In this embodiment, specifically: the row spacing adjustment mechanism includes two second fixed blocks 9 fixed to the outer peripheral wall of the first guide rod 4, a moving block 10 hinged to each of the second fixed blocks 9, a first connecting block 11 hinged at one end to the moving block 10, a second limiting post 16 fixed to one end of the moving block 10, and two one-way cylinders 17 hinged to one end of the frame 1. The output end of each one-way cylinder 17 is hinged to the outer peripheral wall of a second limiting post 16, and the other end of each first connecting block 11 is hinged to a first sleeve block 5.

[0038] In this embodiment, specifically: the row spacing adjustment mechanism further includes a first limiting frame 12 fixed to one end of the frame 1 and a first limiting post 13 fixed to one end of the moving block 10. The first limiting post 13 is L-shaped and is slidably disposed on the inner wall of the first limiting frame 12.

[0039] In this embodiment, specifically: the row spacing adjustment mechanism further includes a support block 14 fixed to one end of the frame 1 and a second limiting frame 15 fixed to the support block 14, and the outer peripheral wall of the second limiting post 16 is slidably disposed on the inner wall of the second limiting frame 15.

[0040] In this embodiment, specifically: the first guide mechanism includes a fixed post 21 fixed to the first sleeve block 5, an ear plate 22 fixed to the outer peripheral wall of the fixed post 21, and a first guide plate 23 fixed to one end of the ear plate 22 near the frame 1. The first guide plate 23 and the frame 1 are close to each other and fit together.

[0041] In this embodiment, specifically: the auxiliary positioning mechanism includes a bidirectional cylinder 18 fixed to one end of the frame 1, a pressure plate 19 fixed to the two output ends of the bidirectional cylinder 18, and a limiting block 20 fixed to one end of the frame 1. A limiting groove is formed through one side of the pressure plate 19, and the inner wall of the limiting groove is in contact with the side wall of the limiting block 20. The ends of the pressure plate 19 and the first guide plate 23 that are close to each other abut against each other.

[0042] In this embodiment, specifically: the second guiding mechanism includes two second guiding rods 28 fixed to the other end of the frame 1, a second sleeve block 29 sleeved on the outer peripheral wall of the second guiding rod 28, a second guiding plate 30 fixed to the second sleeve block 29 near one end of the frame 1, and springs 31 fixed to the inner walls on both sides of the frame 1. The springs 31 are sleeved on the outside of the second guiding rods 28, and the ends of the two springs 31 that are close to each other are fixed to the ends of the two second sleeve blocks 29 that are far apart from each other. The feed end of the seed pipe 27 is connected to the discharge end of the seed box 3 through a hose.

[0043] Working principle: When it is necessary to adjust the row spacing, the operator activates the one-way cylinder 17 in the row spacing adjustment mechanism. The piston rod of the one-way cylinder 17 extends or retracts, driving the second limiting post 16, which is hinged to its output end, to move. The second limiting post 16 drives the moving block 10 to move. The movement of the moving block 10 is precisely guided and limited by the sliding cooperation between the first limiting post 13 and the first limiting frame 12 and the sliding cooperation between the second limiting post 16 and the second limiting frame 15. Each first connecting block 11 transmits power to the first sleeve block 5 that it is hinged to, forcing the first sleeve block 5 to slide along the axial direction of the first guide rod 4.

[0044] During this adjustment process, the first guide mechanism fixed on the first set of blocks 5 moves accordingly, and the first guide plate 23 always stays in contact with the side wall of the frame 1 to ensure that the first set of blocks 5 moves smoothly and without shaking; the trenching mechanism moves synchronously with the first set of blocks 5 through the first connecting rod 6 and the first fixing block 7, and the position of the trenching disc 8 changes accordingly.

[0045] At the same time, the ditching mechanism drives the fixed frame 25 and its pressing wheel 26 and seeding pipe 27 to move synchronously through the second connecting block 24, thereby realizing the row spacing linkage adjustment of the ditching, sowing and pressing components;

[0046] During the movement of the seed metering tube 27, the second guide plate 30 fixed to its upper part drives the second sleeve block 29 to slide along the second guide rod 28, and the spring 31 is compressed or released to provide guidance and automatic centering function for the seed metering tube 27. The seed metering tube 27 and the seed box 3 are kept connected by a hose to ensure uninterrupted seed delivery.

[0047] After all components are adjusted to the predetermined row spacing, the bidirectional cylinder 18 in the auxiliary positioning mechanism is activated. The bidirectional cylinder 18 drives the two pressure plates 19 to move towards each other. The limiting groove on the pressure plate 19 slides along the limiting block 20, ensuring that the pressure plate 19 moves in a straight line and finally presses tightly against the first guide plate 23, thereby firmly locking all the first set of blocks 5 and their associated components to prevent them from shifting in subsequent operations. At this point, the row spacing adjustment is completed, and the device can carry out normal no-till sowing operations.

[0048] 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.

[0049] 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 no-till seeding device with adjustable row spacing, characterized in that: The utility model provides a kind of seedling raising machine, including organic frame (1), two rollers (2) of rotation setting on frame (1), seedling box (3) of being fixed to the upper end of frame (1), first guide rod (4) of being fixed to one end of frame (1), two first sleeve blocks (5) of being sleeved in the side wall of first guide rod (4), trenching mechanism of being fixed to first sleeve block (5), row spacing adjusting mechanism being arranged on frame (1) and first guide rod (4), first guide mechanism being arranged on first sleeve block (5), auxiliary positioning mechanism being arranged on one end of frame (1) for the simultaneous positioning of two first guide mechanisms, second connecting block (24) of being fixed to the side wall of trenching mechanism, fixed frame (25) of being fixed to the side wall of second connecting block (24) and tamping wheel (26) of rotation setting on fixed frame (25), fixed frame (25) is also fixed with seed tube (27), the other end of frame (1) is provided with second guide mechanism for guiding seed tube (27) in horizontal direction.

2. The no-till planter row unit of claim 1, wherein: The trenching mechanism includes a first connecting rod (6) fixed to the lower end of the first sleeve block (5), a first fixed block (7) fixed to the lower end of the first connecting rod (6), and trenching discs (8) rotatably mounted on both sides of the first fixed block (7).

3. The no-till planter row unit of claim 1, wherein: The row spacing adjusting mechanism includes two second fixed blocks (9) fixed to the outer peripheral wall of the first guide rod (4), a moving block (10) hingedly connected to each second fixed block (9), a first connecting block (11) hingedly connected to one end of the moving block (10), a second limiting column (16) fixed to one end of the moving block (10), and two one-way air cylinders (17) hingedly connected to one end of the frame (1). The output end of each one-way air cylinder (17) is hingedly connected to the outer peripheral wall of one second limiting column (16), and the other end of each first connecting block (11) is hingedly connected to one first sleeve block (5).

4. The no-till planting unit of claim 3, wherein: The row spacing adjusting mechanism further includes a first limiting frame (12) fixed to one end of the frame (1) and a first limiting column (13) fixed to one end of the moving block (10). The first limiting column (13) is L-shaped, and the first limiting column (13) is slidingly arranged in the inner wall of the first limiting frame (12).

5. The no-till planting unit of claim 3, wherein: The row spacing adjusting mechanism further includes a support block (14) fixed to one end of the frame (1) and a second limiting frame (15) fixed to the support block (14). The outer peripheral wall of the second limiting column (16) is slidingly arranged in the inner wall of the second limiting frame (15).

6. The no-till planting unit of claim 1, wherein: The first guide mechanism includes a fixed column (21) fixed to the first sleeve block (5), an ear plate (22) fixed to the outer peripheral wall of the fixed column (21), and a first guide plate (23) fixed to the ear plate (22) near one end of the frame (1). The first guide plate (23) and the frame (1) are in close contact with each other at the end close to each other.

7. The no-till planting unit of claim 6, wherein: The auxiliary positioning mechanism includes a two-way air cylinder (18) fixed to one end of the frame (1), a pressing plate (19) fixed to the two output ends of the two-way air cylinder (18), and a limiting block (20) fixed to one end of the frame (1). A limiting groove is formed in one side of the pressing plate (19). The inner wall of the limiting groove and the side wall of the limiting block (20) are in close contact. The end close to each other of the pressing plate (19) and the first guide plate (23) is in abutment.

8. The no-till planting unit of claim 1, wherein: The second guide mechanism comprises two second guide rods (28) fixed to the other end of the frame (1), a second sleeve block (29) sleeved on the peripheral wall of the second guide rod (28), a second guide plate (30) fixed to the second sleeve block (29) close to one end of the frame (1), and springs (31) fixed to the inner walls of the frame (1) on both sides. The spring (31) is sleeved on the outside of the second guide rod (28), and the ends of the two springs (31) close to each other are fixed to the ends of the two second sleeve blocks (29) away from each other. The feeding end of the seed tube (27) is connected to the discharging end of the seed box (3) through a hose.

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