Posture-adjusting type high-speed precision seed-metering device used before corn filling

Abstract

The invention belongs to the technical field of agricultural seeding mechanical equipment, and particularly relates to a posture-adjusting type high-speed precision seed-metering device before corn filling, which comprises a seed inlet pipe, a front shell, a seed protecting plate, a seed-metering wheel, a rear shell and a transmission shaft which are sequentially arranged from front to back, the transmission shaft sequentially penetrates through the rear shell and the seed-metering wheel from back to front, and drives the seed-metering wheel to rotate through the cooperation of a hexagonal prism structure of the transmission shaft; the seed inlet pipe and the front shell are adhered to the front side of the shell through glue; the front end of the seed protecting plate is connected to the inner side of the front shell through a bolt; the front shell and the rear shell are connected through a bolt to jointly form a cylindrical seed metering cavity; by arranging the V-shaped posture adjusting opening structure, the V-shaped posture adjusting opening is formed in the front end of the hole, the upper side and the inner side of the V-shaped posture adjusting opening are both V-shaped faces, overturning torque is applied to normal and vertical corn seeds, the corn seeds are adjusted to be in a parallel posture before seed filling, the corn seed filling capacity is improved, and the miss-seeding rate of the seed metering device is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural sowing machinery and equipment, in particular to a high-speed precision seeding device for corn with a posture adjustment before filling. Background Art

[0002] Corn is the main food crop in my country. Promoting precision seeding technology is an important way to increase corn yield. The seed meter is the core component for precision seeding, and its working performance directly determines the quality of seeding. The corn seed meter discharges seeds in an orderly manner according to a certain spacing between plants, so that the light, water and fertilizer are fully utilized during the growth of corn, which is beneficial to cost saving and yield increase in corn production. At present, the main seed meters are mechanical and pneumatic. Mechanical seed meters have broad application prospects because of their simple structure and low cost.

[0003] In the existing mechanical corn seeding device, corn seeds are filled into the mold holes under the combined action of gravity and the interaction force between seeds to complete the filling. When the seeds rotate to the seed clearing area with the seeding wheel, the excess seeds are cleared by their own gravity. Only a single seed is retained in the mold hole and rotates with the seeding wheel until it is discharged from the seed clearing area. With the increase of the seeder operating speed (greater than 8km / h), the filling time is shortened and the corn seeds have different postures before filling, which can easily cause the mold holes to be missed or over-filled, resulting in missed or repeated sowing during the seeding process, which restricts the application of the mechanical corn seeding device in a high-speed operating environment. For this reason, the present invention provides a high-speed precision seeding device with posture adjustment before corn filling. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a corn front-loading posture-adjusting high-speed precision seeding device described in the present invention comprises a seed entry tube, a front shell, a seed protection plate, a seeding wheel, a rear shell and a transmission shaft which are arranged in sequence from front to back; the transmission shaft passes through the rear shell and the seeding wheel in sequence from back to front, and drives the seeding wheel to rotate through its hexagonal column structure; the seed entry tube and the front shell are bonded to the front side of the shell by glue; the front end of the seed protection plate is connected to the inner side of the front shell by bolts; the front shell and the rear shell are connected by bolts to form a cylindrical seeding cavity together; the rear end of the seed protection plate cooperates with the front end of the seeding wheel to realize the axial positioning of the seeding wheel in the seeding device cavity; the front end of the profile hole installed on the seeding wheel has a V-shaped posture-adjusting opening, and the upper side surface and the inner side surface of the V-shaped posture-adjusting opening are both V-shaped.

[0006] Preferably, the hole height installed on the seed wheel is 9.5-10.5 mm, the width at the upper end is 5-7 mm, and the width at the lower end is 12-15 mm, which can only accommodate one corn seed in a parallel posture.

[0007] Preferably, the angle between the upper end surface of the seed protection plate and the vertical direction is 5-15°, and the angle between the lower end surface and the vertical direction is 3-7°.

[0008] Preferably, the rear end surface of the seed protection plate, the inner surface of the rear shell body, the mold hole, and the seed dropping cup form a closed space for restraining the movement of seeds under the action of gravity during the seed carrying process.

[0009] Preferably, the V-shaped posture adjustment opening is used to adjust the posture of the seeds to be parallel to the transmission axis direction before the opening of the profile hole by using the two end faces to guide the profile hole, thereby improving the seed-taking ability of the profile hole.

[0010] The beneficial effects of the present invention are as follows:

[0011] 1. The high-speed precision seeding device for adjusting the posture before corn filling described in the present invention has a V-shaped posture adjustment mouth structure. This design adopts a V-shaped posture adjustment mouth installed at the front end of the shaped hole. The upper side and the inner side are both V-shaped surfaces, which apply a turning torque to the normal and vertical corn seeds, so that the corn seeds are adjusted to a parallel posture before filling, thereby improving the corn seed filling capacity and reducing the missed seeding rate of the seeding device.

[0012] 2. The corn front-loading posture-adjusting high-speed precision seeding device described in the present invention can accommodate only one corn seed in a parallel posture through the provided hole structure, thereby reducing the reseeding rate of the seeding device, effectively preventing the occurrence of reseeding, and ensuring the accuracy of seeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a stereogram in the present invention;

[0015] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the working stage structure of the present invention (Ⅰ. Seed filling stage Ⅱ. Seed cleaning stage Ⅲ. Seed carrying stage Ⅳ. Seed throwing stage);

[0017] Figure 4 It is a structural schematic diagram of the seeding wheel in the present invention;

[0018] Figure 5 It is a structural schematic diagram of the seed taking unit in the present invention.

[0019] In the figure: 1. Seed entry tube; 2. Front shell; 3. Seed protection plate; 4. Transmission shaft; 5. Seed wheel; 6. Rear shell; 7. V-shaped posture adjustment port; 8. Type hole; 9. Seed dropping cup. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] As Figures 1 - 5 shown, a high-speed precision metering seeder for corn with a pre-filling posture adjustment according to an embodiment of the present invention includes a seed inlet pipe 1, a front housing 2, a seed protection plate 3, a seed metering wheel 5, a rear housing 6, and a transmission shaft 4 arranged in sequence from front to back; the transmission shaft 4 passes through the rear housing 6 and the seed metering wheel 5 from back to front, and drives the seed metering wheel 5 to rotate through the cooperation of its hexagonal column structure; the seed inlet pipe 1 and the front housing 2 are adhesively bonded to the front side of the housing; the front end of the seed protection plate 3 is connected to the inner side of the front housing 2 by bolts; the front housing 2 and the rear housing 6 are connected by bolts to jointly form a cylindrical seed metering cavity; the rear end of the seed protection plate 3 cooperates with the front end of the seed metering wheel 5 to realize the axial positioning of the seed metering wheel 5 in the seeder cavity; a V-shaped posture adjustment port 7 is provided at the front end of the seed metering hole 8 installed on the seed metering wheel 5, and the upper side and the inner side of the V-shaped posture adjustment port 7 are both V-shaped; during operation, through the adhesive bonding of the seed inlet pipe 1 and the front housing 2, an initial channel for seeds to enter the seed metering cavity is formed, and the adhesive bonding ensures the connection tightness and prevents seed leakage. The front end of the seed protection plate 3 is connected to the inner side of the front housing 2 by bolts, which is firmly installed and convenient for disassembly and maintenance. The front housing 2 and the rear housing 6 are connected by bolts to form a cylindrical seed metering cavity, providing a closed space for the movement of seeds. The transmission shaft 4 passes through the components from back to front, and its hexagonal column structure cooperates with the seed metering wheel 5 to stably transmit power to the seed metering wheel 5, driving the seed metering wheel 5 to rotate. The rear end of the seed protection plate 3 cooperates with the front end of the seed metering wheel 5 to limit the axial movement of the seed metering wheel 5 in the seeder cavity, ensuring the stable position of the seed metering wheel 5 during rotation and maintaining the accuracy of the entire seed metering process. When the seed metering wheel 5 rotates, the seeds move towards the seed metering hole 8 under the action of gravity and the mutual force between seeds. The upper side and the inner side of the V-shaped posture adjustment port 7 are V-shaped. When the seeds approach the seed metering hole 8, the two V-shaped surfaces of the V-shaped posture adjustment port 7 come into contact with the seeds. Due to the special geometric shape of the V-shaped structure, different-direction forces are generated on the seeds, and these forces form a flipping moment, causing the posture of the seeds to change, guiding the seeds to adjust to a direction parallel to the transmission shaft 4 before entering the seed metering hole 8, improving the success rate of the seeds entering the seed metering hole 8. Through this design, a V-shaped posture adjustment port 7 is installed at the front end of the seed metering hole 8, which uses the upper side and the inner side as V-shaped surfaces to apply a flipping moment to the normal and vertical corn seeds, enabling the corn seeds to adjust to a parallel posture before seed filling, improving the seed filling ability of the corn seeds, and reducing the missed seeding rate of the seeder.

[0022] As Figures 1 - 5As shown, the height of the seed holes 8 installed on the metering wheel 5 is 9.5 - 10.5 mm, the width at the upper end is 5 - 7 mm, and the width at the lower end is 12 - 15 mm, which can only accommodate one maize seed in a parallel posture. During operation, the dimensions of the seed holes 8 are carefully designed with a height of 9.5 - 10.5 mm, an upper-end width of 5 - 7 mm, and a lower-end width of 12 - 15 mm, such that the space of the seed holes 8 can exactly accommodate only one maize seed in a parallel posture. During the process of the seeds filling into the seed holes 8, this dimensional limitation avoids the situation of multiple seeds entering the seed holes 8 simultaneously. Through this design, only one maize seed in a parallel posture can be accommodated, reducing the multiple-seeding rate of the metering device, effectively preventing the occurrence of multiple-seeding phenomenon, and ensuring the accuracy of seeding.

[0023] As Figures 1 - 5 shown, the angle between the upper end face of the seed guard plate 3 and the vertical direction is 5 - 15°, and the angle between the lower end face and the vertical direction is 3 - 7°. During operation, the special angle design of the seed guard plate 3 optimizes the movement trajectory of the seeds in the metering device. The angle between the upper end face and the vertical direction is 5 - 15°, and the angle between the lower end face and the vertical direction is 3 - 7°. With such an inclined angle setting, during the process of the seeds rotating with the metering wheel 5, the seed guard plate 3 can guide the seeds to move smoothly towards the seed dropping cup 9. Through this design, the appropriate angle ensures that when the seeds move on the seed guard plate 3, they will neither move too fast and be difficult to control due to too large an angle nor affect the movement efficiency due to too small an angle, guaranteeing the stability and orderliness of the seed movement.

[0024] As Figures 1 - 5 shown, the rear end face of the seed guard plate 3, the inner side face of the rear housing 6, the seed holes 8, and the seed dropping cup 9 form a closed space for restricting the movement of the seeds under the action of gravity during the seed-carrying process. During operation, the rear end face of the seed guard plate 3, the inner side face of the rear housing 6, the seed holes 8, and the seed dropping cup 9 form a closed space, creating a relatively independent and stable movement environment for the seeds during the seed-carrying process. Under the combined action of the centrifugal force generated by the rotation of the metering wheel 5 and the self-gravity of the seeds, the seeds migrate from the seed holes 8 to the seed dropping cup 9. The closed space restricts the movement range of the seeds. Through this design, it can prevent the seeds from shifting or scattering during the migration process, ensuring that the seeds can accurately fall into the seed dropping cup 9 and wait for seeding, improving the accuracy and uniformity of seeding.

[0025] As Figures 1 - 5As shown, the V-shaped attitude adjustment port 7 is used to adjust the attitude of seeds to be parallel to the direction of the transmission shaft 4 before the openings of the two end-face guiding holes 8, thereby improving the seed-taking ability of the seeds for the holes 8. During operation, during the seed metering process, the attitudes of the seeds are various before they enter the holes 8, which will affect the seed-taking effect. The two end faces of the V-shaped attitude adjustment port 7 play a key role when the seeds approach the holes 8. They apply forces in specific directions to the seeds, generating a flipping moment. Through this flipping moment, the attitude of the seeds is adjusted to be parallel to the direction of the transmission shaft 4, making the adaptability between the seeds and the holes 8 better. Through this design, the seeds can enter the holes 8 more easily, thereby improving the seed-taking ability of the seeds for the holes 8 and reducing the probability of missed seeding.

[0026] During operation, the seeding tube 1 and the front housing 2 are adhesively bonded with glue to form an initial channel for seeds to enter the metering cavity. The glue bonding ensures the connection tightness and prevents seed leakage. The front end of the seed guard plate 3 is bolted to the inner side of the front housing 2, providing stable installation and convenient disassembly and maintenance. The front housing 2 and the rear housing 6 are bolted together to form a cylindrical metering cavity, providing a closed space for the movement of seeds. The drive shaft 4 passes through the components from the rear to the front, and its hexagonal column structure cooperates with the metering wheel 5 to stably transmit power to the metering wheel 5, driving the metering wheel 5 to rotate. The rear end of the seed guard plate 3 cooperates with the front end of the metering wheel 5 to restrict the axial movement of the metering wheel 5 within the seeder cavity, ensuring the stable position of the metering wheel 5 during rotation and maintaining the accuracy of the entire metering process. When the metering wheel 5 rotates, the seeds move towards the orifice 8 under the action of gravity and the mutual force between seeds. The upper side and the inner side of the V-shaped attitude adjustment port 7 are V-shaped. When the seeds approach the orifice 8, the two V-shaped surfaces of the V-shaped attitude adjustment port 7 come into contact with the seeds. Due to the special geometric shape of the V-shaped structure, forces in different directions are generated on the seeds, and these forces form a flipping moment, causing the attitude of the seeds to change, guiding the seeds to adjust to a direction parallel to the drive shaft 4 before entering the orifice 8, and improving the success rate of the seeds entering the orifice 8. The size of the orifice 8 is carefully designed with a height of 9.5 - 10.5 mm, an upper width of 5 - 7 mm, and a lower width of 12 - 15 mm, so that the space of the orifice 8 can just accommodate one maize seed in a parallel attitude. During the process of the seeds filling into the orifice 8, this size limitation avoids the situation of multiple seeds entering the orifice 8 simultaneously. The special angle design of the seed guard plate 3 optimizes the movement trajectory of the seeds within the seeder. The angle between the upper end face and the vertical direction is 5 - 15°, and the angle between the lower end face and the vertical direction is 3 - 7°. Such an inclined angle setting enables the seed guard plate 3 to guide the seeds to move smoothly towards the seed dropping cup 9 during the rotation of the metering wheel 5 with the seeds. The rear end face of the seed guard plate 3, the inner side of the rear housing 6, the orifice 8, and the seed dropping cup 9 form a closed space, creating a relatively independent and stable movement environment for the seeds during the seed carrying process. Under the combined action of the centrifugal force generated by the rotation of the metering wheel 5 and the self-gravity of the seeds, the seeds migrate from the orifice 8 to the seed dropping cup 9. The closed space restricts the movement range of the seeds. During the metering process, the attitudes of the seeds are diverse before entering the orifice 8, which will affect the seed taking effect. The two end faces of the V-shaped attitude adjustment port 7 play a key role when the seeds approach the orifice 8. They apply forces in specific directions to the seeds, generating a flipping moment. Through this flipping moment, the attitude of the seeds is adjusted to a direction parallel to the drive shaft 4, making the adaptability between the seeds and the orifice 8 better.

[0027] Embodiment 1: Seed filling stage: the seed entry tube 1 and the seed entry port of the front shell body 2 are connected by glue, and corn seeds are put into the seed entry tube 1 and enter the seed cavity along the seed entry port of the seed entry tube 1; the seed wheel 5 is driven to rotate by the transmission shaft 4 through the hexagonal column structure. When the seed wheel 5 rotates, the corn seeds flow into the mold hole 8 below the seed wheel 5 under the action of gravity and the interaction force between seed populations, and are adjusted by the V-shaped posture adjustment port 7 and then filled into the mold hole 8 in an orderly manner.

[0028] Seed clearing stage: When the seeds enter the seed clearing area, the seeds first filled into the shaped holes 8 will be constrained by the shaped holes 8, while the remaining seeds will break away from the shaped holes 8 under the action of their own gravity due to lack of constraints, so that only one corn seed is retained in each shaped hole 8.

[0029] Seed carrying stage: a closed passage is formed between the shaped hole 8, the rear shell 6, the seed protection plate 3, and the seed dropping cup 9. The corn seeds migrate from the shaped hole 8 to the seed dropping cup 9 under the combined action of their own gravity and centrifugal force, and wait for seed dropping in the seed dropping cup 9.

[0030] Planting stage: When the corn seeds move with the seeding cup 9 to the seeding port of the rear shell 6, due to the lack of constraint of the rear shell 6, the seeds break away from the seeding cup 9 under the action of gravity and implant in the ground seed bed through the seed guide tube of the seeder.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-speed precision seeding device for corn with front-loading posture adjustment, characterized in that: The invention comprises a seeding tube (1), a front housing (2), a seed protection plate (3), a seeding wheel (5), a rear housing (6) and a transmission shaft (4) which are arranged in sequence from front to back; the transmission shaft (4) passes through the rear housing (6) and the seeding wheel (5) in sequence from back to front, and drives the seeding wheel (5) to rotate through its hexagonal column structure; the seeding tube (1) and the front housing (2) are bonded to the front side of the housing by glue; the front end of the seed protection plate (3) is connected to the inner side of the front housing (2) by bolts; the front housing (2) and the rear housing (6) are connected by bolts to form a cylindrical seeding cavity; the rear end of the seed protection plate (3) cooperates with the front end of the seeding wheel (5) to realize the axial positioning of the seeding wheel (5) in the seeding cavity; the front end of the profile hole (8) installed on the seeding wheel (5) is provided with a V-shaped posture adjustment opening (7), and the upper side surface and the inner side surface of the V-shaped posture adjustment opening (7) are both V-shaped.

2. A corn pre-charging posture-adjusting high-speed precision seed metering device according to claim 1, characterized in that: The profile hole (8) installed on the seed wheel (5) has a height of 9.5-10.5 mm, an upper width of 5-7 mm, and a lower width of 12-15 mm, and can only accommodate one corn seed in a parallel posture.

3. A corn pre-charging posture-adjusting high-speed precision seed metering device according to claim 2, characterized in that: The angle between the upper end surface of the seed protection plate (3) and the vertical direction is 5-15°, and the angle between the lower end surface and the vertical direction is 3-7°.

4. A high-speed precision seed metering device for corn with pre-charging posture adjustment according to claim 3, characterized in that: The rear end surface of the seed protection plate (3), the inner side surface of the rear shell (6), the mold hole (8), and the seed dropping cup (9) form a closed space for restraining the movement of seeds under the action of gravity during the seed carrying process.

5. A corn pre-charging posture-adjusting high-speed precision seed metering device according to claim 4, characterized in that: The V-shaped posture adjustment opening (7) is used to adjust the posture of the seeds to be parallel to the direction of the transmission shaft (4) before the two end surface guide holes (8) are opened, thereby improving the seed-taking ability of the holes (8).

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