Diameter-variable seeding wheel mechanism

Abstract

The utility model belongs to the technical field of agricultural machinery, and discloses a variable-diameter seeding wheel mechanism, which comprises a seeding disc, a variable-diameter structure positioned on the left side and a flow control structure positioned outside the seeding disc, and the variable-diameter structure comprises a pinion and a bull gear meshed with the outer wall of the pinion. Through the design of a variable-diameter structure, the rotation of the pinion can drive the large gear to rotate, so that the sliding block slides in the sliding groove and accurately translates along the guide direction of the sliding groove, when the sliding block slides, the push rod is synchronously driven to translate, and the connecting plug is further driven to translate; the diameter of the seeding wheel can change correspondingly, and as the seeding plant spacing is closely related to the diameter of the seeding wheel, the change of the diameter of the seeding wheel can directly cause the corresponding change of the seeding plant spacing, so that the accurate adjustment of the seeding plant spacing can be conveniently and quickly realized to adapt to the planting of different crops.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically a variable diameter seeding wheel mechanism. Background Technology

[0002] The seeding disc is a key component in agricultural machinery used for sowing. Its main function is to sow seeds evenly and continuously into the soil. The seed metering device is the core component of the seeding wheel, which is responsible for continuously and evenly discharging seeds from the seed box. Currently, the sowing spacing of seeding discs on the market is not adjustable. To adjust the sowing distance, a larger diameter seeding disc is required, which is inconvenient to adjust and troublesome to replace, making it inconvenient for agricultural operations. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides a variable diameter seeding wheel mechanism, including a seeding disc, a variable diameter structure located on the left side, and a flow control structure located outside the seeding disc.

[0004] The variable diameter structure includes a small gear and a large gear meshing with the outer wall of the small gear. The inner wall of the large gear has five grooves arranged in a ring. A slider is slidably connected to the inner wall of the groove. A push rod is fixedly connected to the left side of the slider.

[0005] Preferably, the inner walls of the five push rods are provided with movable grooves, and the inner walls of the movable grooves are slidably connected to connecting plugs.

[0006] Preferably, the flow control structure includes a speckled clamp connected to the seeding tray and located inside the connector plug, and a spring fixedly connected to the speckled clamp, with a lever fixedly connected to one end of the spring.

[0007] Preferably, it further includes a seed tray mounted on and communicating with the right side of the seeding tray, and the right end of the large gear is rotatably connected to the inside of the seed tray via a bearing.

[0008] Preferably, a dial wheel is fixedly installed on the side of the seed tray opposite to the sowing tray. When the lever approaches the dial wheel, it pushes the spring to open the duckbill clamp and allow the seeds to flow out.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This invention utilizes a variable diameter structure. The rotation of a small gear drives the rotation of a large gear, allowing the slider to slide within the groove and precisely translate along the guide direction of the groove. Simultaneously, the slider's movement drives the push rod to translate, further translating the connecting plug. As the plug moves up and down, the diameter of the sowing wheel changes accordingly. Since there is a close relationship between the sowing spacing and the diameter of the sowing wheel, a change in the sowing wheel diameter directly leads to a corresponding change in the sowing spacing. This allows for convenient and quick precise adjustment of the sowing spacing to adapt to different crop planting needs, greatly improving the adaptability and flexibility of the sowing equipment in agricultural production.

[0011] This invention utilizes a flow control structure. When the lever rotates with the seeding disc and approaches the dial wheel, the pressure of the lever is transmitted to the dial wheel, triggering a spring device to deform and release elastic potential energy. The thrust generated by the spring acts on the speckled pliers along a specific transmission path, overcoming the closing resistance of the speckled pliers and gradually opening their jaws. The degree of opening directly determines the seed outflow speed and flow rate. When the speckled pliers open to a certain angle, the seeds flow out in an orderly manner through the opening formed by the speckled pliers. As the lever continues to rotate and gradually moves away from the dial wheel, the spring thrust gradually decreases, and the speckled pliers begin to close under the action of the spring, thus achieving a stable and precise control effect on the seed flow rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0014] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 3 ;

[0015] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the right side of this utility model.

[0017] In the diagram: 1. Seeding tray; 2. Variable diameter structure; 21. Pinion; 22. Gear; 23. Slide groove; 24. Slider; 25. Push rod; 26. Connecting plug; 3. Flow control structure; 31. Duckbill clamp; 32. Spring; 33. Lever; 34. Dial wheel; 4. Seed tray. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 5 As shown, this utility model provides a variable diameter seeding wheel mechanism, including a seeding disc 1, a variable diameter structure 2 located on the left side, and a flow control structure 3 located outside the seeding disc 1.

[0020] The variable diameter structure 2 includes a pinion 21 and a large gear 22 that meshes with the outer wall of the pinion 21. Five circular grooves 23 are provided on the inner wall of the large gear 22. A slider 24 is slidably connected to the inner wall of the grooves 23. A push rod 25 is fixedly connected to the left side of the slider 24.

[0021] The above solution employs a variable diameter structure 2, where the rotation of the small gear 21 drives the rotation of the large gear 22, causing the slider 24 to slide within the groove 23 and precisely translate along the guide direction of the groove 23. Simultaneously, as the slider 24 slides, it drives the push rod 25 to translate, further driving the connecting plug 26 to translate. As the plug moves up and down, the diameter of the sowing wheel changes accordingly. Since there is a close relationship between the sowing spacing and the diameter of the sowing wheel, a change in the sowing wheel diameter directly leads to a corresponding change in the sowing spacing. This allows for convenient and quick precise adjustment of the sowing spacing to adapt to different crop planting needs, greatly improving the adaptability and flexibility of the sowing equipment in agricultural production.

[0022] like Figures 1 to 5 As shown, the inner walls of the five push rods 25 are provided with movable grooves and the inner walls of the movable grooves are slidably connected to the connecting plugs 26. The flow control structure 3 includes a duckbill clamp 31 that is connected to the seeding tray 1 and located inside the connecting plug 26, and a spring 32 that is fixedly connected to the duckbill clamp 31. One end of the spring 32 is fixedly connected to a lever 33.

[0023] The above scheme is adopted: through the design of the flow control structure 3, when the lever 33 rotates with the seeding disc 1 and approaches the dial wheel 34, the pressure of the lever 33 is transmitted to the dial wheel 34, which in turn triggers the spring 32 to deform and release elastic potential energy. The thrust generated by the spring 32 acts on the speckled pliers 31 along a specific transmission path, overcoming the closing resistance of the speckled pliers 31 itself, and pushing the jaws of the speckled pliers 31 to gradually open. The degree of opening directly determines the seed outflow speed and flow rate. When the speckled pliers 31 opens at a certain angle, the seeds flow out in an orderly manner through the opening formed by the speckled pliers 31. As the lever 33 continues to rotate and gradually moves away from the dial wheel 34, the thrust of the spring 32 gradually decreases, and the speckled pliers 31 begins to close under the action of the spring 32, thereby achieving a stable and precise control effect on the seed flow rate.

[0024] like Figures 1 to 5 As shown, it also includes a seed tray 4 assembled on the right side of the seeding tray 1 and connected to it. The right end of the large gear 22 is rotatably connected to the inside of the seed tray 4 through a bearing. A dial wheel 34 is fixedly installed on the side of the seed tray 4 opposite to the seeding tray 1. When the lever 33 approaches the dial wheel 34, it pushes the spring 32 to open the duckbill clamp 31 and allow the seeds to flow out.

[0025] By adopting the above scheme, under different sowing speed requirements, by adjusting the rotation speed of the sowing disc 1, the contact frequency between the lever 33 and the dial 34 can be changed accordingly, thereby accurately controlling the number of opening and closing times and duration of the duckbill clamp 31, ensuring that the number of seeds at each sowing point is relatively uniform, improving the uniformity of sowing, and facilitating the uniform growth and development of crops in the later stages.

[0026] The working principle of this utility model:

[0027] First, according to the required sowing spacing, rotate the small gear 21. The rotation of the small gear 21 drives the large gear 22 that meshes with it to rotate. When the large gear 22 rotates, the slider 24 in the inner wall groove 23 begins to slide. The slider 24 drives the push rod 25 to move horizontally, thereby causing the connecting plug 26 to move up and down, realizing the change of the diameter of the sowing wheel and completing the initial adjustment of the sowing spacing. Next, fill the seed tray 4 with seeds. After filling, start the sowing tray 1 to start rotating. As the sowing tray 1 rotates, the lever 33 also makes a circular motion. When the lever 33 approaches the dial wheel 34 on the seed tray 4, the lever 33 interacts with the dial wheel 34. The pressure of the lever 33 is transmitted to the dial wheel 34, causing the spring 32 to be compressed and accumulate elastic potential energy. The thrust released by the spring 32 pushes the duckbill clamp 31 to overcome its own closing resistance and open, and the seeds flow out from the opening of the duckbill clamp 31 for sowing.

[0028] 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.

[0029] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable-diameter seeding wheel mechanism, characterized in that: It includes a seeding tray (1) and a variable diameter structure (2) located on the left side, and a flow control structure (3) located outside the seeding tray (1); The variable diameter structure (2) includes a small gear (21) and a large gear (22) meshing with the outer wall of the small gear (21). The inner wall of the large gear (22) is provided with five grooves (23) arranged in a ring. A slider (24) is slidably connected to the inner wall of the groove (23). A push rod (25) is fixedly connected to the left side of the slider (24).

2. The variable diameter seeding wheel mechanism according to claim 1, characterized in that: The inner walls of the five push rods (25) are provided with movable grooves and the inner walls of the movable grooves are slidably connected to the connecting plugs (26).

3. The variable diameter seeding wheel mechanism according to claim 1, characterized in that: The flow control structure (3) includes a speckled pliers (31) connected to the seeding tray (1) and located inside the connector (26) and a spring (32) fixedly connected to the speckled pliers (31). One end of the spring (32) is fixedly connected to a lever (33).

4. The variable diameter seeding wheel mechanism according to claim 3, characterized in that: It also includes a seed disc (4) assembled on and connected to the right side of the seeding disc (1), and the right end of the large gear (22) is rotatably connected to the inside of the seed disc (4) via a bearing.

5. The variable diameter seeding wheel mechanism according to claim 4, characterized in that: A dial wheel (34) is fixedly installed on the side of the seed tray (4) opposite to the sowing tray (1). When the lever (33) approaches the dial wheel (34), it pushes the spring (32) to open the duckbill clamp (31) and allow the seeds to flow out.

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