A top-clamp seed meter

Abstract

The utility model relates to seed metering device technical field, propose a kind of top clamp seed metering device, including bottom shell with first recess;Annular protrusion is located in first recess, annular protrusion separates first recess into first space and second space;Cover is set on annular protrusion and is used to cover first space;Duck nozzle is set on bottom shell and is used to discharge seed;Top shell has second recess and is inserted into second space, the bottom wall of top shell and second space form seed chamber, and one discharge port is arranged in the side of top shell;Driving shaft passes through bottom shell, cover and top shell in turn;Feed cylinder is connected on top shell and is used to communicate seed chamber;Seed metering module is set in bottom shell, and seed metering module is several and is correspondingly set with duck nozzle, and sowing module includes pusher and spring;Adjusting module is set on bottom shell and is used to make spring be extruded. Through the above technical scheme, the problem that the existing seed metering device is caused by low seeding efficiency due to inoculation hopper is solved.

Description

Technical Field

[0001] This utility model relates to the field of seed metering technology, specifically to a top clamp seed metering device. Background Technology

[0002] Seed metering devices have a wide range of applications and are suitable for sowing various crops such as corn, wheat, beans, miscellaneous grains, and cereals. In actual operation, adjusting the seed metering device is a key step, mainly including adjusting the plant spacing, sowing depth, and sowing rate.

[0003] Existing seed metering devices typically have an inoculation hopper. Seeds emerge from the seed chamber and pass through the inoculation hopper before entering the duckbill. This process takes time, which limits the rotation speed of the seed metering device and ultimately reduces the efficiency of sowing.

[0004] Therefore, a new seed metering device is urgently needed. Utility Model Content

[0005] This utility model proposes a top clamp seed metering device, which solves the problem of low sowing efficiency caused by the existing seed metering device having an inoculation hopper.

[0006] The technical solution of this utility model is as follows:

[0007] A top clamp seed metering device, comprising:

[0008] The bottom shell has a first groove;

[0009] An annular protrusion is located within the first groove, which divides the first groove into a first space and a second space. The first space is located inside the annular protrusion, and the second space is located outside the annular protrusion.

[0010] A cover plate is placed on the annular protrusion and is used to cover the first space;

[0011] The duckbill, consisting of several parts all located on the bottom shell, is used to expel seeds.

[0012] The top shell has a second groove, and the open end of the top shell extends into the second space. The bottom wall of the top shell and the second space form a seed chamber. A discharge port is provided on the side of the top shell. After the duck beak is rotated, the discharge port can communicate with the interior of the duck beak.

[0013] A drive shaft passes sequentially through the bottom shell, the cover plate, and the top shell. The drive shaft is rotatably connected to the bottom shell and fixedly connected to the top shell and the cover plate, respectively.

[0014] A feed cylinder is connected to the outer side of the top shell and is used to communicate with the seed chamber;

[0015] A seeding module is disposed in the bottom shell. There are several seeding modules, which are arranged in the same way as the duck beak. The seeding module includes a push rod and a spring. The spring is located in the closed space formed by the first space and the cover plate. One end of the spring abuts against the push rod, and the other end abuts against the inner wall of the closed space. The push rod passes through the first space and the second space, and the other end of the push rod abuts against the inner wall of the top shell.

[0016] An adjustment module is provided on the top and bottom shells and is used to compress the spring;

[0017] The pusher rod presses the seeds against the inner wall of the top shell until they are pushed from the discharge port into the corresponding beak.

[0018] With the above technical solution, the duckbill is set on the bottom shell and rotates with the bottom shell. A seed chamber is formed between the top cover and the first space. The seed chamber has a discharge port. The push rod can squeeze one seed against the side wall of the top shell each time, and then push the seed into the corresponding duckbill through the discharge port during rotation. After the duckbill with the seed comes into contact with the ground, the seed can smoothly enter the soil. In addition, the adjustment module is used to adjust the amount of compression on the spring, thereby achieving adaptability to different seed sizes and ensuring that one seed is pushed into the duckbill each time.

[0019] As a further technical solution, the adjustment module includes a rotary button, an adjustment gear, an adjustment slider, and an adjustment rod. The rotary button is rotatably disposed on the outer side of the top shell, and the adjustment gear is rotatably disposed on the inner side of the top shell. The adjustment gear is coaxially disposed with the rotary button. The adjustment slider is slidably disposed on the cover plate. The adjustment slider has teeth and meshes with the adjustment gear by means of the teeth. One end of the adjustment rod is hinged to the adjustment slider, and the other end is hinged to the inner side of the cover plate. The adjustment rod contacts the push rod and presses the push rod to compress the spring.

[0020] The adjustment module, as described above, includes a rotary button, an adjustment gear, an adjustment slider, and an adjustment rod. This module allows for adjustment of the spring compression, enabling the pusher rod to accommodate seeds of different sizes. Since the rotary button is located outside the top shell, it is highly convenient for the operator to make adjustments.

[0021] As a further technical solution, the push rod has a push protrusion that contacts the adjusting rod, and the push protrusion is cylindrical.

[0022] In order to facilitate manufacturing, the push rod is provided with a push protrusion through the above technical solution. The push protrusion contacts the outer edge of the adjusting rod. The adjusting rod squeezes the push protrusion, thereby squeezing the push rod and finally squeezing the spring.

[0023] As a further technical solution, the seeding module also includes a guide block, which is disposed in the external space and has a guide groove. The push rod is slidably disposed in the guide groove, and the spring is located in the guide groove. One end of the spring abuts against the push rod, and the other end abuts against the side wall of the guide groove.

[0024] In order to improve the stability of the push rod during the movement process, the seeding module includes a guide block, which is set in the external space. A guide groove is opened on the guide block, the push rod slides in the guide groove, and the spring is located in the guide groove. The length of the guide groove, the length of the push rod, and the length of the spring are consistent.

[0025] As a further technical solution, the push rod, the spring, and the guide block are all provided in a corresponding manner.

[0026] Through the above technical solution, in order to facilitate individual control, reduce control difficulty, and avoid interference between the push rods, the push rods, springs, and guide blocks are set in a one-to-one correspondence manner.

[0027] As a further technical solution, the adjusting rod is arc-shaped.

[0028] Through the above technical solution, in order to achieve a compact overall design of the seed metering device, the adjusting rod is set to an arc shape, so that the adjustment rod can be adjusted while keeping its length relatively short.

[0029] As a further technical solution, a sliding groove is provided on the cover plate, and the adjusting slider is slidably disposed in the sliding groove.

[0030] In order to improve the stability of the adjusting slider during the movement process, a groove is provided on the cover plate through the above technical solution, and the adjusting slider is slidably set in the groove.

[0031] As a further technical solution, an observation port is also included, which is disposed on the top shell and has a transparent baffle.

[0032] In order to facilitate the observation of the seeds in the seed chamber and to replenish the seeds in a timely manner, an observation port is set on the top shell, facing the seed chamber, and a transparent baffle is set on the observation port.

[0033] The beneficial effects of this utility model are as follows: The top-clamp seed metering device provided by this utility model, through the setting of an adjustable pressure seed metering module and an adjustment module, can adapt to the sowing needs of seeds of different sizes, ensuring that only one seed is pushed into the nozzle each time, thereby improving sowing accuracy and uniformity. In addition, the seed metering device is also characterized by its compact structure and convenient operation. Furthermore, the presence of an observation window facilitates real-time monitoring of the remaining seed volume in the seed chamber, effectively preventing missed sowing or double sowing, thus improving sowing efficiency and reliability. It is suitable for various crop planting environments. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 A schematic diagram of the top clamp seed metering device provided by this utility model;

[0036] Figure 2 yes Figure 1 A schematic diagram of the structure behind the top shell;

[0037] Figure 3 yes Figure 2 A structural diagram showing the structure behind the cover plate;

[0038] Figure 4 This is a schematic diagram of another form of top clamp seed metering device provided by this utility model;

[0039] Figure 5 This is a schematic diagram of the top shell provided by this utility model.

[0040] In the diagram: 1. Bottom shell; 2. Annular protrusion; 3. Cover plate; 4. Duckbill; 5. Top shell; 6. Drive shaft; 7. Feed cylinder; 8. Push rod; 9. Spring; 10. Rotary button; 11. Adjusting gear; 12. Adjusting slider; 13. Adjusting rod; 14. Guide block; 15. Observation window; 16. Discharge port. Detailed Implementation

[0041] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0042] The following combination Figures 1 to 5 The top clamp seed metering device of this application is described.

[0043] The top clamp seed metering device provided in this application includes a bottom shell 1, an annular protrusion 2, a cover plate 3, a duckbill 4, a top shell 5, a drive shaft 6, a feed cylinder 7, a seed metering module, and an adjustment module.

[0044] refer to Figures 1 to 4 The bottom shell 1 is cylindrical, meaning it has a first groove. An annular protrusion 2 is disposed inside the bottom shell 1, separating the first groove into a first space and a second space. A cover plate 3 is connected to the top of the annular protrusion 2, forming a closed space with the first space. The top shell 5 has a second groove, with its open end inserted into the first groove. Both the annular protrusion 2 and the cover plate 3 are located within the second groove, and a gap exists between the cover plate 3 and the bottom walls of the second groove. A seed chamber is formed between the top shell 5 and the first space, containing the seeds. A discharge port is provided on the side wall of the top shell 5.

[0045] Several duckbill 4s are evenly distributed circumferentially on the outside of the bottom shell 1. The duckbill 4s and the bottom shell 1 are existing structures and will not be described in detail. The duckbill 4s rotate with the bottom shell 1. During this rotation, the discharge port of the seed chamber aligns and connects with the internal space of each duckbill 4 in sequence. Once the discharge port connects with the internal space of the duckbill 4, the seeds inside the seed chamber enter the duckbill 4, and as the duckbill 4 comes into contact with the ground, the seeds fall into the soil.

[0046] To prevent seeds in the seed chamber from falling into the duckbill 4 in a free-fall manner, and thus to ensure that there is only one seed in each duckbill 4, the opening direction of the discharge port is vertically upward or tilted upward, rather than tilted downward or vertically downward.

[0047] refer to Figure 1 and Figure 4 The feed cylinder 7 is connected to the outside of the top cover, and its outlet is connected to the seed chamber. Operators can add seeds to the seed chamber through the feed cylinder 7.

[0048] refer to Figures 1 to 4The seed metering module is located inside the bottom shell 1. The number of seed metering modules is the same as the number of duckbill 4 modules, and there is a one-to-one correspondence between them. The seed metering module includes a push rod 8, a spring 9, and a guide block 14. The guide block 14 is embedded in the closed space formed by the cover plate 3 and the first space. The guide block 14 has a guide groove. The push rod 8 is slidably disposed in the guide groove. The spring 9 is located between the inner wall of the guide groove and the end of the push rod 8. One end of the spring 9 abuts against the inner wall of the guide groove, and the other end abuts against the end of the push rod 8. The push rod 8 has a pushing protrusion. The adjusting rod 13 compresses the spring 9 by pressing the pushing protrusion. Adjusting rod 13 forces pusher rod 8 to move, creating a gap between pusher rod 8 and the inner wall of top shell 5. Seeds in the seed chamber fall into this gap. After pusher rod 8 separates from adjusting rod 13, the end of pusher rod 8 presses a seed against the inner wall of top shell 5, and pusher rod 8 moves with the seed. Since top shell 5 does not move, when pusher rod 8 moves with the seed to the discharge port, pusher rod 8 pushes the seed into the corresponding spout 4. When spout 4 touches the ground, spout 4 opens to allow the seed to fall into the soil.

[0049] refer to Figures 2 to 4 The adjustment module includes a rotary button 10, an adjustment gear 11, an adjustment slider 12, and an adjustment rod 13. The rotary button 10 is rotatably connected to the outside of the top shell 5, and the adjustment gear 11 is rotatably connected to the inside of the top shell 5. The rotation shafts of the rotary button 10 and the adjustment gear 11 are the same. The adjustment gear 11 is located between the top shell 5 and the cover plate 3. A groove is provided on the outside of the cover plate 3, and the adjustment slider 12 is slidably disposed within the groove. One end of the adjustment slider 12 has teeth, resembling a rack, and these teeth mesh with the adjustment gear 11. Rotating the rotary button 10 rotates the adjustment gear 11, thereby moving the adjustment slider 12. The adjusting rod 13 is arc-shaped, with one end hinged to the cover plate 3 and the other end hinged to the end of the adjusting slider 12. When the adjusting slider 12 moves, the adjusting rod 13 will rotate. Since the outer edge of the adjusting rod 13 is in contact with the push protrusion, when the position and posture of the adjusting rod 13 are fixed, when the push rod 8 contacts the adjusting rod 13 during rotation, the push rod 8 will change along the arc of the adjusting rod 13, thereby realizing the extrusion of the push rod 8 and the extrusion of the spring 9. When the push rod 8 moves, the seeds enter the end of the push rod 8. When the push rod 8 separates from the adjusting rod 13, the end of the push rod 8 extrudes the seeds onto the inner wall of the top shell 5.

[0050] To facilitate the observation of the number of seeds in the seed chamber and to allow for the timely addition of new seeds, an observation opening is provided on the cover plate 3, and an observation window 15 is provided on the observation opening. The observation window 15 is made of transparent acrylic sheet.

[0051] The top clamp seed metering device provided in this application has the following advantages:

[0052] 1. High operating efficiency: Without an inoculation hopper, seeds can be directly ejected from the seed chamber into the duckbill, resulting in precise and rapid seed metering. This can increase the rotation speed of the seed metering device and improve operating efficiency.

[0053] II. Easy installation: The duckbill, seeding module and adjustment module are easy to assemble and install accurately, allowing users to flexibly adjust the plant spacing according to the required spacing.

[0054] 3. Easy to adjust: Simply turn the rotary button to easily adjust the gap between the push rod and the seed chamber, easily adapting to seeds of different sizes.

[0055] IV. Easy to clean up: After the operation is completed, a screw cap is added to the bottom of the feed cylinder to easily discharge the remaining seeds.

[0056] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A top-clamp seed metering device, characterized in that, include: The bottom shell (1) has a first groove; An annular protrusion (2) is located in the first groove, and the annular protrusion (2) isolates the first groove into a first space and a second space. The first space is located inside the annular protrusion (2), and the second space is located outside the annular protrusion (2). A cover plate (3) is placed on the annular protrusion (2) and is used to cover the first space; The duckbill (4) consists of several parts, all of which are disposed on the bottom shell (1). The duckbill (4) is used to discharge seeds. The top shell (5) has a second groove. The open end of the top shell (5) is inserted into the second space. The bottom wall of the top shell (5) and the second space form a seed chamber. A discharge port (16) is opened on the side of the top shell (5). After the duck beak (4) is rotated, the discharge port can communicate with the interior of the duck beak (4). The drive shaft (6) passes through the bottom shell (1), the cover plate (3) and the top shell (5) in sequence. The drive shaft (6) is rotatably connected to the bottom shell (1). The drive shaft (6) is fixedly connected to the top shell (5) and the cover plate (3) respectively. Feed cylinder (7) is connected to the outer side of the top shell (5) and is used to communicate with the seed chamber; A seed metering module is set in the bottom shell (1). There are several seed metering modules and they are set in the same way as the duck beak (4). The seed metering module includes a push rod (8) and a spring (9). The spring (9) is located in the closed space formed by the first space and the cover plate (3). One end of the spring (9) abuts against the push rod (8) and the other end abuts against the inner wall of the closed space. The push rod (8) passes through the first space and the second space. The other end of the push rod (8) abuts against the inner wall of the top shell (5). An adjustment module is provided on the top shell (5) and is used to compress the spring (9); The pusher rod (8) presses the seeds against the inner wall of the top shell (5) until they are pushed from the outlet into the corresponding beak (4).

2. The top clamp seed metering device according to claim 1, characterized in that, The adjustment module includes a rotary button (10), an adjustment gear (11), an adjustment slider (12), and an adjustment rod (13). The rotary button (10) is rotatably disposed on the outer side of the top shell (5). The adjustment gear (11) is rotatably disposed on the inner side of the top shell (5). The adjustment gear (11) is coaxially disposed with the rotary button (10). The adjustment slider (12) is slidably disposed on the cover plate (3). The adjustment slider (12) has teeth. The adjustment slider (12) meshes with the adjustment gear (11) by means of the teeth. One end of the adjustment rod (13) is hinged to the adjustment slider (12), and the other end is hinged to the inner side of the cover plate (3). The adjustment rod (13) contacts the push rod (8) and squeezes the push rod (8) to squeeze the spring (9).

3. A top-clamp seed metering device according to claim 2, characterized in that, The push rod (8) has a push protrusion that contacts the adjusting rod (13), and the push protrusion is cylindrical.

4. A top-clamp seed metering device according to claim 3, characterized in that, The seeding module also includes a guide block (14), which is embedded in the first space. The guide block (14) has a guide groove. The push rod (8) is slidably disposed in the guide groove. The spring (9) is located in the guide groove. One end of the spring (9) abuts against the push rod (8), and the other end abuts against the side wall of the guide groove.

5. A top-clamp seed metering device according to claim 4, characterized in that, The push rod (8), the spring (9), and the guide block (14) are all provided in a one-to-one correspondence.

6. A top-clamp seed metering device according to claim 2, characterized in that, The adjusting rod (13) is arc-shaped.

7. A top-clamp seed metering device according to claim 6, characterized in that, The cover plate (3) has a sliding groove, and the adjusting slider (12) is slidably disposed in the sliding groove.

8. A top-clamp seed metering device according to any one of claims 1-7, characterized in that, It also includes an observation port, which is located on the top shell (5) and has a transparent observation window (15).

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