Cotton seeding machine with adjustable seeding distance

Abstract

The application discloses a cotton seeding machine with adjustable seeding interval, and relates to the technical field of cotton seeding machines.The cotton seeding machine comprises a fixed plate, two sliding grooves are formed in the fixed plate, a guide rod is fixedly installed in one of the sliding grooves, a first threaded rod is rotatably installed in the other sliding groove, a plurality of groups of threads with different pitches are arranged on the surface of the first threaded rod, one end of a connecting plate is threadedly connected with the first threaded rod, and the other end of the connecting plate is slidably connected with the guide rod.The first threaded rod with a plurality of groups of threads with different pitches is arranged on the fixed plate, the connecting plate and the guide rod are matched, the first threaded rod is driven to rotate by using a first motor, and the connecting plate is accurately moved along the guide rod.The threads with different pitches are designed, the moving distance of the connecting plate can be accurately controlled as required, the seeding interval can be flexibly adjusted, the diverse planting requirements under different cotton varieties, planting densities and soil conditions can be met, and the yield quality and adaptability are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of cotton seeders, and more specifically, relates to a cotton seeder with adjustable seeding spacing. Background Technology

[0002] An adjustable-spacing cotton seeder is a specialized agricultural machine that uses mechanical structures or intelligent control systems to flexibly adjust the row and plant spacing for cotton planting. Its core function is to precisely control the seed distribution spacing in the field according to different cotton varieties, planting patterns, and agronomic requirements, thereby optimizing the crop growth environment, improving land utilization, and promoting high yields and efficiency.

[0003] Most existing cotton planters use a fixed spacing design, which makes it difficult to flexibly adjust row and plant spacing according to different cotton varieties, planting patterns or plot conditions, thus limiting the optimization space of planting schemes. At the same time, traditional feeding mechanisms are prone to uneven sowing due to differences in seed flow or mechanical vibration, resulting in frequent local double-sowing and missed sowing. This not only wastes seed resources but also increases the cost of subsequent thinning and replanting, affecting the uniformity of seedling emergence and the final yield. Summary of the Invention

[0004] In view of the problems in related technologies, the present invention proposes a cotton seeder with adjustable sowing spacing to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to an adjustable-spacing cotton seeder, comprising a fixed plate with two parallel grooves. A guide rod is fixedly installed inside one groove, and a first threaded rod is rotatably installed inside the other groove. The surface of the first threaded rod has multiple sets of threaded segments with different pitches. One end of the first threaded rod is threadedly connected to a connecting plate, and the other end of the connecting plate is slidably connected to the guide rod for guiding and limiting. A control mechanism is provided on the connecting plate to control the longitudinal movement of a conveying pipe. The conveying pipe is slidably connected to the outside of a feeding pipe and is sealed to it. The feeding pipe is connected to a seed trough, which is located on the outer wall of a distributing roller. The distributing roller is connected to a seed placement box and is rotatably mounted at the bottom of the seed placement box. The end of the conveying pipe away from the feeding pipe is rotatably connected to a cotton seeder.

[0006] Furthermore, one end of the first threaded rod is fixedly installed on the output end of the first motor, and the first motor is fixedly installed on the fixed plate. The first threaded rod is driven to rotate by the first motor, so that the connecting plate moves along the direction of the guide rod, thereby realizing the adjustment of the sowing spacing.

[0007] Furthermore, the control mechanism includes a sliding groove formed on the connecting plate, a second threaded rod is rotatably installed inside the sliding groove, the second threaded rod is threadedly connected to a sliding plate, the sliding plate is slidably connected inside the sliding groove, and the sliding plate is driven to perform reciprocating linear motion inside the sliding groove by the rotation of the second threaded rod.

[0008] Furthermore, a collar is fixedly installed on the sliding plate, and a conveying pipe is fixedly installed on the collar. Multiple sets of control mechanisms and connecting plates are provided. The components and installation methods of the multiple sets of control mechanisms are the same. The multiple sets of control mechanisms can synchronously drive multiple conveying pipes to move at the same time to ensure the consistency of the sowing spacing in multiple holes.

[0009] Furthermore, a first transmission wheel is fixedly installed at one end of each of the multiple second threaded rods. The multiple first transmission wheels are connected by a first transmission belt. One of the first transmission wheels is fixedly installed with the output end of a second motor. The second motor is fixedly installed on one of the connecting plates. The feeding pipe is fixedly installed on the connecting plate. The second motor drives all the second threaded rods to rotate synchronously through the first transmission wheel and the first transmission belt, thereby realizing the synchronous driving of multiple conveying pipes.

[0010] Furthermore, the dispensing roller is rotatably mounted between two fixed rods, both of which are fixedly mounted on a fixed plate. The seed placement box is fixedly mounted on a support rod, which is fixedly mounted on the top of the fixed plate. One end of the dispensing roller is fixedly mounted with the output end of a third motor, which is fixedly mounted on the fixed rod. The dispensing roller is driven to rotate by the third motor to achieve quantitative dispensing of seeds.

[0011] Furthermore, a second drive wheel is fixedly installed at the other end of the distributing roller. The second drive wheel is connected to a third drive wheel via a second drive belt. The third drive wheel is fixedly installed on the stirring shaft. The stirring shaft is rotatably installed inside the seed placement box. When the distributing roller rotates, the stirring shaft is driven to rotate synchronously through the second drive wheel, the second drive belt, and the third drive wheel to continuously stir the cotton seeds in the seed placement box, preventing the seeds from clumping or clogging.

[0012] Furthermore, a lid is movably installed on the top of the seed placement box, and an mounting plate is fixedly installed on the back of the fixing plate. The mounting plate is used to connect with the tractor, and the seeder is suspended and installed behind the tractor through the mounting plate to achieve traction operation.

[0013] Compared with the prior art, the present invention has the following advantages: 1. This invention uses multiple sets of threads with different pitches arranged in an arithmetic sequence on the surface of the first threaded rod, combined with a guide and limiting structure formed by the guide rod and connecting plate, and a first motor driving the first threaded rod to rotate, so that the difference between adjacent spacings of multiple connecting plates remains constant during adjustment. This achieves rapid and equal spacing adjustment of the sowing spacing, solving the problems of inconvenient sowing spacing adjustment and difficulty in ensuring equal spacing in multiple rows in traditional cotton planters. It greatly improves the flexibility and adaptability of sowing operations and can meet the needs of cotton sowing with equal row spacing or wide and narrow rows under different agronomic requirements.

[0014] 2. This invention uses a second motor to synchronously drive multiple sets of second threaded rods to rotate via a first transmission wheel and a first transmission belt. The threaded transmission converts the rotational motion into linear reciprocating motion of a sliding plate within a sliding groove. This motion, through a collar, drives the conveying pipe to slide up and down along the axial direction of the feeding pipe, achieving synchronous vertical height adjustment of the cotton seeder. This allows the seeder to accurately descend to a shallow soil level close to the ground for precise seeding, and to rise synchronously away from the ground during transfer or obstacle avoidance. This ensures consistent seeding depth and quality while preventing damage from collisions with the ground. Simultaneously, the mixing shaft and the distributing roller are linked via a second transmission belt to continuously mix the seeds, effectively preventing seed clumping and ensuring uniform distribution and smooth, continuous seeding.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the inside of the seed placement box of the present invention; Figure 4 This is an exploded view of part of the structure of the present invention; Figure 5 Schematic diagram of some parts of the present invention Figure 1 ; Figure 6 This is an enlarged schematic diagram of point A in the present invention; Figure 7 This is a schematic diagram of the back of the fixing plate of the present invention; Figure 8 Schematic diagram of some parts of the present invention Figure 2 .

[0018] The attached diagram lists the components represented by each number as follows: 1. Fixed plate; 2. Slide groove; 3. First threaded rod; 4. Guide rod; 5. Connecting plate; 6. Conveying pipe; 7. Discharge pipe; 8. Seed trough; 9. Distributing roller; 10. Seed placement box; 11. First motor; 12. Slide groove; 13. Second threaded rod; 14. Slide plate; 15. Collar; 16. First transmission wheel; 17. First transmission belt; 18. Second motor; 19. Fixed rod; 20. Support rod; 21. Second transmission wheel; 22. Second transmission belt; 23. Third transmission wheel; 24. Stirring shaft; 25. Third motor; 26. Box cover; 27. Mounting plate; 28. Cotton seeder. Detailed Implementation

[0019] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0020] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0021] Please see Figures 1-8 As shown, this invention is a cotton seeder with adjustable sowing spacing, including a fixed plate 1. Two parallel sliding grooves 2 are formed on the fixed plate 1. A guide rod 4 is fixedly installed inside one of the sliding grooves 2, and a first threaded rod 3 is rotatably installed inside the other sliding groove 2. The surface of the first threaded rod 3 is provided with multiple sets of threads with different pitches. One end of a connecting plate 5 is threadedly connected to the first threaded rod 3. The other end of the connecting plate 5 is slidably connected to the guide rod 4 to achieve guiding and limiting. A control mechanism is provided on the connecting plate 5 to control the movement of a conveying pipe 6. The conveying pipe 6 is slidably connected to the outside of a feeding pipe 7. The feeding pipe 7 is interconnected with a seed trough 8. The seed trough 8 is formed on the outer wall of a distributing roller 9. The distributing roller 9 is interconnected with a seed placement box 10 and is rotatably installed at the bottom of the seed placement box 10. The lower end of the conveying pipe 6 is rotatably connected to a cotton seeder 28.

[0022] The working principle of the adjustable seeding spacing cotton seeder proposed in this invention is as follows: During operation, the power device connected to the first threaded rod 3 is first started, driving the first threaded rod 3 to rotate in one of the grooves 2 on the fixed plate 1. The surface of the first threaded rod 3 is carefully provided with multiple sets of threads with different pitches. These threads with different pitches are not arbitrarily designed, but are laid out according to specific mathematical laws and mechanical principles. The core purpose is to achieve the equality of the seeding spacing after adjustment.

[0023] One end of the connecting plate 5 is threadedly connected to the first threaded rod 3, and the other end is slidably connected to the guide rod 4 fixed in another groove 2. When the first threaded rod 3 rotates, due to the meshing of the threads, the connecting plate 5 will be subjected to a force along the axial direction of the first threaded rod 3, thereby moving along the guide rod 4.

[0024] Although the thread pitch varies at different positions, resulting in differences in the absolute distance moved by each connecting plate 5 when the first threaded rod 3 rotates by the same angle, the difference in the distance moved by adjacent connecting plates 5 remains constant from the perspective of the overall mechanical structure and motion relationship. This is because the arrangement of threads with different pitches on the first threaded rod 3 ensures that the relative position changes between the connecting plates 5 during rotation follow a rule of equal spacing. In other words, regardless of how the first threaded rod 3 rotates, the distance increment between adjacent connecting plates 5 remains consistent during movement, thus ensuring that the adjusted sowing spacing is equal.

[0025] Each connecting plate 5 is equipped with a control mechanism. When the control mechanism is working, it drives the collar 15 to slide in the sliding groove 12. The collar 15 is fixedly connected to the conveying pipe 6, so that the conveying pipe 6 slides up and down along the axial direction of the feeding pipe 7. After the connecting plate 5 drives the conveying pipe 6 to complete the spacing adjustment, the lower end of the conveying pipe 6 is exactly aligned with the inlet of the cotton seeder 28 at the corresponding position. At this time, the distributing roller 9 continues to rotate under the drive of the drive device. The seeds in the seed placement box 10 are picked up one by one by the rotation of the distributing roller 9 and filled into the seed groove 8 opened on the outer wall of the distributing roller 9. When the seeds in the seed groove 8 rotate to the lowest point with the distributing roller 9, they fall into the feeding pipe 7 connected to it under the action of gravity. The seeds flow down the feeding pipe 7 into the conveying pipe 6 that is slidably connected to its outside, and are then guided by the conveying pipe 6 to fall accurately into the cotton seeder 28 that is rotatably connected to it. Finally, the cotton seeder 28 sows the seeds into the soil in a hole-splitting manner, completing the cotton sowing operation with equal spacing.

[0026] In one embodiment, for the first threaded rod 3, one end of the first threaded rod 3 is fixedly installed on the output end of the first motor 11, and the first motor 11 is fixedly installed on the fixed plate 1. The first threaded rod 3 is driven to rotate by the first motor 11, and the multiple sets of threads with different pitches on its surface are engaged with the threads of the connecting plate 5, so that the connecting plate 5 can move precisely along the direction of the guide rod 4, thereby realizing the flexible adjustment of the sowing spacing.

[0027] In one embodiment, the control mechanism includes a sliding groove 12 formed on the connecting plate 5. A second threaded rod 13 is rotatably installed inside the sliding groove 12. The second threaded rod 13 is threadedly connected to a sliding plate 14. The sliding plate 14 is slidably connected inside the sliding groove 12. The rotation of the second threaded rod 13 drives the sliding plate 14 to make linear reciprocating motion in the sliding groove 12, thereby driving the conveying pipe 6 to adjust its position relative to the feeding pipe 7.

[0028] In one embodiment, for the sliding plate 14, a collar 15 is fixedly installed on the sliding plate 14, and a conveying pipe 6 is fixedly installed on the collar 15. The control mechanism and the connecting plate 5 are provided in multiple sets. The components and installation methods of the multiple sets of control mechanisms are the same. The multiple sets of control mechanisms can synchronously drive multiple conveying pipes 6 to move simultaneously to ensure the consistency and synchronicity of the multi-hole sowing spacing adjustment.

[0029] In one embodiment, for the aforementioned second threaded rod 13, one end of each of the plurality of second threaded rods 13 is fixedly mounted with a first transmission wheel 16, and the plurality of first transmission wheels 16 are connected by a first transmission belt 17. One of the first transmission wheels 16 is fixedly mounted with the output end of a second motor 18, and the second motor 18 is fixedly mounted on one of the connecting plates 5. The feed pipe 7 is fixedly mounted on the connecting plate 5. By means of the second motor 18 driving all the second threaded rods 13 to rotate synchronously via the first transmission wheel 16 and the first transmission belt 17, the synchronous and precise driving of the multiple feed pipes 6 is achieved.

[0030] In one embodiment, the distributing roller 9 is rotatably mounted between two fixed rods 19, both of which are fixedly mounted on a fixed plate 1. The seed placement box 10 is fixedly mounted on a support rod 20, which is fixedly mounted on the top of the fixed plate 1. One end of the distributing roller 9 is fixedly mounted with the output end of a third motor 25, which is fixedly mounted on the fixed rod 19. The third motor 25 drives the distributing roller 9 to rotate, causing the seed trough 8 to align sequentially with the feeding pipe 7, thereby achieving quantitative distributing and conveying of cotton seeds.

[0031] In one embodiment, for the aforementioned distributing roller 9, a second transmission wheel 21 is fixedly installed at the other end of the distributing roller 9. The second transmission wheel 21 is connected to a third transmission wheel 23 via a second transmission belt 22. The third transmission wheel 23 is fixedly installed on a stirring shaft 24. The stirring shaft 24 is rotatably installed inside the seed placement box 10. When the distributing roller 9 rotates, it drives the stirring shaft 24 to rotate synchronously through the second transmission wheel 21, the second transmission belt 22, and the third transmission wheel 23, continuously stirring the cotton seeds in the seed placement box 10 to prevent the seeds from clumping or blocking, and to ensure that the distributing is uniform and smooth.

[0032] In one embodiment, for the seed placement box 10, a box cover 26 is movably installed on the top of the seed placement box 10, and an mounting plate 27 is fixedly installed on the back of the fixing plate 1. The mounting plate 27 is used to connect with the tractor, and the seeder is suspended and installed behind the tractor through the mounting plate 27. The box cover 26 is used to seal and feed the seed placement box 10, which facilitates traction operation and daily maintenance.

[0033] The working principle of the adjustable sowing spacing cotton seeder proposed in this invention is as follows: during operation, the seeder is first suspended and installed behind the tractor by the mounting plate 27, the box cover 26 is opened and cotton seeds are added into the seed placement box 10, and the operation begins after the box cover 26 is closed.

[0034] The first motor 11 is started, and its output drives the first threaded rod 3 to rotate within one of the grooves 2 on the fixed plate 1. The surface of the first threaded rod 3 is provided with multiple sets of threads with different pitches. One end of the connecting plate 5 is threadedly connected to the first threaded rod 3, and the other end is slidably connected to a guide rod 4 fixed in another groove 2. When the first threaded rod 3 rotates, due to the meshing of the threads, the connecting plate 5 is subjected to a force along the axial direction of the first threaded rod 3, thus moving along the guide rod 4 within the groove 2. Because the threads with different pitches on the first threaded rod 3 are arranged according to an arithmetic sequence, when the first threaded rod 3 rotates by the same angle, although the absolute distances moved by each connecting plate 5 differ, the difference in the distances moved by adjacent connecting plates 5 remains constant, thus ensuring that the sowing spacing between the multiple connecting plates 5 is equal after adjustment.

[0035] Simultaneously, the second motor 18 is activated. The second motor 18 is fixedly mounted on one of the connecting plates 5. The output of the second motor 18 drives the first transmission wheel 16, which is fixedly connected to it, to rotate. This first transmission wheel 16, through the first transmission belt 17, drives all other first transmission wheels 16 to rotate synchronously, thereby causing multiple second threaded rods 13 to rotate simultaneously. Each second threaded rod 13 is rotatably mounted inside a sliding groove 12 opened on the corresponding connecting plate 5. The second threaded rod 13 is threadedly connected to a sliding plate 14, which is slidably connected inside the sliding groove 12. When the second threaded rod 13 rotates, the sliding plate 14 performs linear reciprocating motion within the sliding groove 12. A collar 15 is fixedly mounted on the sliding plate 14, and a conveying pipe 6 is fixedly mounted on the collar 15. A discharge pipe 7 is fixedly mounted on the connecting plate 5, and the conveying pipe 6 is slidably connected to the outside of the discharge pipe 7. Therefore, the linear motion of the sliding plate 14 drives the conveying pipe 6 to slide up and down along the axial direction of the feeding pipe 7 via the collar 15. The lower end of the conveying pipe 6 is rotatably connected to the cotton seeder 28. The up and down movement of the conveying pipe 6 directly drives the cotton seeder 28 to adjust its height in the vertical direction. When the cotton seeder 28 needs to be close to the ground, the conveying pipe 6 slides downward, driving the cotton seeder 28 down to a position close to the ground, so that the seeds can be accurately sown into the shallow soil. When the cotton seeder 28 needs to be away from the ground, the conveying pipe 6 slides upward, driving the cotton seeder 28 up to a position away from the ground, facilitating the transfer of the entire machine or obstacle avoidance.

[0036] During the sowing process, the third motor 25 is started. The third motor 25 is fixedly mounted on the fixed rod 19. The output end of the third motor 25 drives the distributing roller 9 to rotate. The distributing roller 9 is rotatably mounted between the two fixed rods 19. The seed placement box 10 is fixedly mounted on the support rod 20. The support rod 20 is fixedly mounted on the top of the fixed plate 1. The distributing roller 9 and the seed placement box 10 are interconnected. The seeds in the seed placement box 10 fall into the seed trough 8 opened on the distributing roller 9 under the action of gravity. As the distributing roller 9 continues to rotate, the seeds in the seed trough 8 are picked up one by one and rotated sequentially to the position aligned with the feed pipe 7. The seeds in the seed trough 8 fall into the feed pipe 7, which is interconnected with it, under the action of gravity. Meanwhile, a second drive wheel 21 is fixedly installed at the other end of the distributing roller 9. The second drive wheel 21 is connected to a third drive wheel 23 via a second drive belt 22. The third drive wheel 23 is fixedly installed on the stirring shaft 24. The stirring shaft 24 is rotatably installed inside the seed placement box 10. Therefore, when the distributing roller 9 rotates, it drives the stirring shaft 24 to rotate synchronously, continuously stirring the cotton seeds in the seed placement box 10 to prevent the seeds from clumping or blocking, and ensuring that the distributing is uniform and smooth.

[0037] Seeds flow downwards along the feed pipe 7 into the conveying pipe 6, which is slidably connected to its exterior. The conveying pipe 6 drives the cotton seeder 28 to move synchronously to a working position close to the ground. The seeds are accurately fed into the cotton seeder 28, which rotates and communicates with them, and are then sown into the soil in a hole-planting manner, completing one sowing cycle. Afterwards, the conveying pipe 6 moves upwards under the reverse drive of the second threaded rod 13, resetting itself and moving the cotton seeder 28 away from the ground back to its initial position, ready for the next sowing cycle. This cycle repeats continuously, achieving continuous and evenly spaced cotton sowing. When the sowing spacing needs to be adjusted, the first motor 11 is restarted, driving the first threaded rod 3 to rotate. The connecting plate 5 moves on the guide rod 4 to a new evenly spaced position. Simultaneously, the second motor 18 synchronously drives all the conveying pipes 6 to move with the connecting plate 5 to the corresponding positions. The up-and-down movement of the conveying pipes 6 also adjusts the cotton seeder 28 to a new height position, thus completing a rapid and evenly spaced adjustment of the sowing spacing.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cotton seeder with adjustable sowing spacing, comprising a fixed plate (1), characterized in that: The fixed plate (1) has two grooves (2). A guide rod (4) is fixedly installed inside one of the grooves (2), and a first threaded rod (3) is rotatably installed inside the other groove (2). The surface of the first threaded rod (3) is provided with multiple sets of threads with different pitches. The first threaded rod (3) is threadedly connected to one end of a connecting plate (5). The other end of the connecting plate (5) is slidably connected to the guide rod (4). The connecting plate (5) is provided with a control mechanism. The control mechanism is used to control the movement of the conveying pipe (6). The conveying pipe (6) is slidably connected to the outside of the feeding pipe (7). The feeding pipe (7) is connected to the seed trough (8). The seed trough (8) is opened on the distributing roller (9). The distributing roller (9) is connected to the seed placement box (10). The distributing roller (9) is rotatably installed at the bottom of the seed placement box (10). The conveying pipe (6) is rotatably connected to the cotton seeder (28).

2. The cotton seeder with adjustable sowing spacing according to claim 1, characterized in that, One end of the first threaded rod (3) is fixedly installed on the output end of the first motor (11), and the first motor (11) is fixedly installed on the fixing plate (1).

3. The cotton seeder with adjustable sowing spacing according to claim 2, characterized in that, The control mechanism includes a sliding groove (12) formed on the connecting plate (5), and a second threaded rod (13) is rotatably installed inside the sliding groove (12). The second threaded rod (13) is threadedly connected to a sliding plate (14), and the sliding plate (14) is slidably connected inside the sliding groove (12).

4. The cotton seeder with adjustable sowing spacing according to claim 3, characterized in that, The sliding plate (14) is fixedly installed with a collar (15), and the collar (15) is fixedly installed with a conveying pipe (6). The control mechanism and the connecting plate (5) are provided with multiple sets, and the parts and installation methods of the multiple sets of the control mechanism are the same.

5. The cotton seeder with adjustable sowing spacing according to claim 4, characterized in that, One end of each of the multiple second threaded rods (13) is fixedly mounted with a first transmission wheel (16), and the multiple first transmission wheels (16) are connected by a first transmission belt (17). One of the first transmission wheels (16) is fixedly mounted with the output end of a second motor (18), and the second motor (18) is fixedly mounted on one of the connecting plates (5). The feed pipe (7) is fixedly mounted on the connecting plate (5).

6. The cotton seeder with adjustable sowing spacing according to claim 1, characterized in that, The distributing roller (9) is rotatably mounted between two fixed rods (19), both of which are fixedly mounted on the fixed plate (1). The seed placement box (10) is fixedly mounted on the support rod (20), which is fixedly mounted on the top of the fixed plate (1). The output end of the third motor (25) is fixedly mounted on one end of the distributing roller (9), which is fixedly mounted on the fixed rod (19).

7. A cotton seeder with adjustable sowing spacing according to claim 6, characterized in that, The other end of the distributing roller (9) is fixedly installed with a second transmission wheel (21). The second transmission wheel (21) is connected to a third transmission wheel (23) via a second transmission belt (22). The third transmission wheel (23) is fixedly installed on the stirring shaft (24). The stirring shaft (24) is rotatably installed inside the seed placement box (10).

8. The cotton seeder with adjustable sowing spacing according to claim 1, characterized in that, The top of the seed placement box (10) is movably fitted with a box cover (26), and the back of the fixing plate (1) is fixedly fitted with an mounting plate (27), which is used to connect to the tractor.

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