A seeding mechanism for a seeder

Abstract

The invention discloses a seeding mechanism for a seed drill, the seed drill comprising a seeding box (2), a feed pipe (3) provided at the lower portion of the seeding box (2), a feed pipe (4) and a discharge pipe (5) connected to each other at the ends of the feed pipe (3), a screening mechanism (6) corresponding to the feed pipe (4) and the discharge pipe (5), a discharge mechanism (7) provided on the discharge pipe (5); a clamping port (8) arranged along the axis of the discharge pipe (5) is provided on the side surface of the discharge pipe (5), and the discharge mechanism (7) comprises an action shaft (9) rotatably connected to a side frame (1) at the upper end of the clamping port (8); the invention can pre-screen seeds and sow them one by one after screening, and the survival rate of the seeds and the sowing uniformity are good.

Description

Technical Field

[0001] The present invention relates to the field of agricultural equipment, and in particular to a seeding mechanism for a seeder. Background Art

[0002] In order to improve the sowing efficiency of agriculture, many automatic sowing machines have appeared on the market. There are various types of sowing machines according to different crops. The sowing machine generally includes a frame, a soil turning component, a sowing component and a soil covering component. After the soil turning component turns over the soil, the sowing component places the seeds one by one into the turned soil, and then the soil is backfilled by the soil covering component to achieve sowing. The reasonable and orderly sowing of the sowing component has become the key to the survival rate of the crop. For example, the Chinese utility model with publication number CN207284163U discloses a large-particle seed plot seeder, which specifically includes a seed tray, a seed trough and other components. The seeds must first enter the seed tray and then fall into the soil as the seed tray rotates. However, this device lacks a screening mechanism, and individual small seeds that are not easy to survive or small impurities are easy to enter the seed tray and enter the soil together, resulting in uneven sowing. At the same time, multiple seeds are easy to enter a single seed trough at the same time, resulting in multiple seeds entering the soil at the same position, thereby affecting the later survival rate and sowing uniformity. Summary of the Invention

[0003] The object of the present invention is to provide a seeding mechanism for a seed drill, which can pre-screen seeds and sow them one by one after screening, thereby improving the survival rate of seeds and sowing uniformity.

[0004] The technical solution of the present invention is as follows: a seeding mechanism for a seed drill, the seed drill includes a seeding box, a feeding pipe is provided at the lower part of the seeding box, the ends of the feeding pipe are respectively provided with a connecting material distribution pipe and a discharge pipe, the ends of the feeding pipe are provided with a screening mechanism corresponding to the distribution material distribution pipe and the discharge pipe, and the discharge pipe is provided with a discharge mechanism; a clamping port arranged along its axis is provided on the side of the discharge pipe, the discharge mechanism includes an action shaft rotatably connected to a frame on the side of the upper end of the clamping port, a clamping disk and a locking disk are respectively provided at both ends of the action shaft, and a clamping plate is evenly distributed on the side of the clamping disk. Rod, the clamping rod is located in the discharge pipeline through the clamping port, and the side of the locking disk is provided with locking grooves corresponding to the number of clamping rods, and the locking grooves are located between adjacent clamping rods; a locking rod rotatably connected to the frame is provided below the action shaft, and the top surface of the end of the locking rod is provided with a locking block that fits the locking groove, and the middle part of the locking rod is provided with a return spring connected to the upper frame, and the bottom surface of the end of the locking rod is provided with a connecting rod rotatably connected, and the side part of the lower end of the clamping port is provided with an action rod rotatably connected to the frame, the end of the action rod is located in the discharge pipeline through the clamping port, and the middle part of the action rod is rotatably connected to the lower end of the connecting rod.

[0005] In the above-mentioned seeding mechanism for a seeder, the distribution pipeline and the feed pipeline are colinear, the discharge pipeline is a right angle, and the feed end of the discharge pipeline is perpendicular to the distribution pipeline, and the screening mechanism includes a drive shaft arranged on the side frame of the feed pipeline, and the drive shaft is provided with an upper turntable and a lower turntable arranged up and down, and the upper turntable and the lower turntable are both provided with fan-shaped grooves with an arc of less than 180°, and the two fan-shaped grooves are symmetrically arranged, and the outer edges of the fan-shaped grooves are located on the outside of the feed pipeline and the distribution pipeline, and the end of the feed pipeline and the feed end of the discharge pipeline are provided with a push groove corresponding to the upper turntable, and the outer ring of the upper turntable enters the inside of the feed pipeline and the discharge pipeline through the push groove, and the distribution pipeline is provided with a support groove corresponding to the lower turntable, and the outer ring of the lower turntable enters the inside of the distribution pipeline through the support groove.

[0006] In the aforementioned seeding mechanism for a seeder, the upper groove surface of the support groove is tangent to the bottom of the feed end of the discharge pipeline.

[0007] In the aforementioned seeding mechanism for a seeder, the push groove is located at the upper part of the feed end of the discharge pipeline.

[0008] In the aforementioned seeding mechanism for a seeder, the arc of the fan-shaped groove is 120°-170°.

[0009] In the aforementioned seeding mechanism for a seeder, the number of the clamping rods is at least three.

[0010] In the aforementioned seeding mechanism for a seeder, the locking groove is triangular.

[0011] In the aforementioned seeding mechanism for a seeder, the end corners of the clamping rod and the action rod both have arc transitions.

[0012] In the aforementioned seeding mechanism for a seeder, a shifting rod located outside the frame is provided in the middle of the action rod.

[0013] In the aforementioned seeding mechanism for a seeder, the feed pipeline, the discharge pipeline and the distribution pipeline are arranged at an angle.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A feeding pipeline is provided at the lower part of the seeding box of the present invention, and the ends of the feeding pipeline are respectively provided with a connected material distribution pipeline and a material discharge pipeline, the end of the feeding pipeline is provided with a screening mechanism corresponding to the material distribution pipeline and the material discharge pipeline, and the material discharge pipeline is provided with a material discharge mechanism; a clamping port arranged along its axis is provided on the side of the material discharge pipeline, and the material discharge mechanism includes an action shaft rotatably connected to the side frame of the upper end of the clamping port, and a clamping disk and a locking disk are respectively provided at both ends of the action shaft, and uniformly distributed clamping rods are provided on the side of the clamping disk, and the clamping rods are located in the material discharge pipeline through the clamping port, and locking grooves corresponding to the number of the clamping rods are provided on the side of the locking disk, and the locking grooves are located at the corresponding positions. The cam is provided with a locking rod connected to the frame for rotation, and the top surface of the end of the locking rod is provided with a locking block that fits in the locking groove. The middle part of the locking rod is provided with a return spring connected to the upper frame. The bottom surface of the end of the locking rod is provided with a connecting rod that is rotatably connected. The side part of the lower end of the clamping port is provided with an action rod connected to the frame for rotation. The end of the action rod is located in the discharge pipe through the clamping port, and the middle part of the action rod is rotatably connected to the lower end of the connecting rod. The seeds enter the feed pipe from the sowing box, and after being screened by the screening mechanism, the seeds that do not meet the requirements enter the distribution pipe, and the seeds that meet the requirements enter the discharge pipe one by one. When the seed passes over the lower action rod, the gravity of the seed pushes the action rod downward, and the seed quickly breaks away from the action rod and enters the soil to be sown. After losing gravity, the action rod is quickly pulled back by the reset spring. During the downward rotation of the action rod The locking block leaves the locking groove, the card tray is unlocked, and the seeds push the card tray to rotate and move downward through their gravity. The upper seeds enter the card rod, and the lower seeds fall down. The process of the action rod being pulled back causes the locking block to re-enter the next locking groove to lock, and the card tray stops rotating to support the seeds at the current position again; after screening, the card rod can separate the seeds that meet the size standards individually, and the card tray can only rotate when the action rod rotates down to complete the feeding of a seed. The rotation angle of the card tray is automatically controlled each time to ensure that the seeds on the card rod fall one by one in an orderly manner, thereby realizing the sowing of seeds one by one.

[0016] 2. The distribution pipeline of the present invention is colinear with the feeding pipeline, the discharge pipeline is right-angled, and the feeding end of the discharge pipeline is perpendicular to the distribution pipeline. The screening mechanism includes a driving shaft arranged on the side frame of the feeding pipeline, and an upper turntable and a lower turntable are arranged up and down on the driving shaft. The upper turntable and the lower turntable are both provided with fan-shaped grooves with an arc of less than 180°. The two fan-shaped grooves are symmetrically arranged, and the outer edges of the fan-shaped grooves are located on the outside of the feeding pipeline and the distribution pipeline. A push groove corresponding to the upper turntable is provided on the end of the feeding pipeline and the feeding end of the discharge pipeline, and the outer ring of the upper turntable enters the inside of the feeding pipeline and the discharge pipeline through the push groove. A support groove corresponding to the lower turntable is provided on the distribution pipeline, and the outer ring of the lower turntable enters through the support groove Inside the distribution pipeline, the drive shaft rotates to drive the upper and lower turntables to rotate. The outer edge of the lower turntable enters the distribution pipeline to support all the stacked seeds above. When the outer edge of the upper turntable enters the feed pipeline, if the seed is smaller than the distance between the upper and lower turntables, the size is small and the upper turntable cannot contact it. If the seed is larger than the distance between the upper and lower turntables, the size is qualified, and the upper turntable will push it into the discharge pipeline. As it continues to rotate, the lower turntable leaves the support groove, and the smaller seeds enter the powder pipeline and are collected, while the upper turntable continues to support the seeds above. After the upper turntable leaves, the lower turntable enters, and the seeds fall onto the lower turntable. Repeat the above steps to achieve automatic screening.

[0017] 3. The feeding pipeline, the discharging pipeline and the distribution pipeline are arranged at an angle to prevent the seeds from falling quickly and ensure the reliability of the discharging mechanism when discharging the seeds one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the seed-discharging mechanism of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the screening mechanism of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the blanking mechanism of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the locking block part of the present invention.

[0023] The marks in the accompanying drawings are: 2-seeding box; 3-feeding pipeline; 4-distributing pipeline; 5-discharging pipeline; 6-screening mechanism; 7-discharging mechanism; 8-feeding port; 9-acting shaft; 10-feeding plate; 11-locking plate; 12-feeding rod; 13-locking groove; 14-locking rod; 15-locking block; 16-reset spring; 17-connecting rod; 18-acting rod; 19-driving shaft; 20-upper turntable plate; 21-lower turntable; 22-fan-shaped groove; 23-push groove; 24-support groove; 25-dial rod. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0025] Embodiment: A seeding mechanism for a seed drill, as shown in the attached Figure 1 As shown, the planter includes a seed box 2, as shown in the attached Figure 2 As shown, a feed pipe 3 is provided at the lower part of the seed box 2, and a feed pipe 4 and a discharge pipe 5 are provided at the ends of the feed pipe 3, respectively. A screening mechanism 6 corresponding to the feed pipe 4 and the discharge pipe 5 is provided at the end of the feed pipe 3, and a discharge mechanism 7 is provided on the discharge pipe 5; as shown in the attached Figure 4 and attached Figure 5 As shown, the side of the feeding pipe 5 is provided with a clamping port 8 arranged along its axis, and the feeding mechanism 7 includes an action shaft 9 rotatably connected to the side frame 1 of the upper end of the clamping port 8, and a clamping disc 10 and a locking disc 11 are respectively provided at both ends of the action shaft 9. The side of the clamping disc 10 is provided with uniformly distributed clamping rods 12, and the clamping rods 12 are located in the feeding pipe 5 through the clamping port 8. The side of the locking disc 11 is provided with locking grooves 13 corresponding to the number of the clamping rods 12, and the locking grooves 13 are located between adjacent clamping rods 12; the action shaft 9 is provided with a clamping disc 10 and a locking disc 11. A locking rod 14 is provided below the shaft 9 and is rotatably connected to the frame 1. The top surface of the end of the locking rod 14 is provided with a locking block 15 that fits into the locking groove 13. The middle part of the locking rod 14 is provided with a return spring 16 connected to the upper frame 1. The bottom surface of the end of the locking rod 14 is provided with a connecting rod 17 that is rotatably connected. The lower end side of the clamping port 8 is provided with an action rod 18 that is rotatably connected to the frame 1. The end of the action rod 18 is located in the discharge pipe 5 through the clamping port 8, and the middle part of the action rod 18 is rotatably connected to the lower end of the connecting rod 17. Figure 3As shown, the distribution pipeline 4 is colinear with the feed pipeline 3, the discharge pipeline 5 is a right angle, and the feed end of the discharge pipeline 5 is perpendicular to the distribution pipeline 4, and the screening mechanism 6 includes a drive shaft 19 arranged on the side frame 1 of the feed pipeline 3, and the drive shaft 19 is provided with an upper turntable 20 and a lower turntable 21 arranged up and down, and the upper turntable 20 and the lower turntable 21 are both provided with fan-shaped grooves 22 with an arc less than 180°, and the two fan-shaped grooves 22 are symmetrically arranged, and the outer edges of the fan-shaped grooves 22 are located on the outside of the feed pipeline 3 and the distribution pipeline 4, and the end of the feed pipeline 3 and the feed end of the discharge pipeline 5 are provided with a push groove 23 corresponding to the upper turntable 20, and the outer ring of the upper turntable 20 enters the feed pipeline 3 and the discharge pipeline 5 through the push groove 23, and the distribution pipeline 4 is provided with a push groove 23 corresponding to the lower turntable 21 The corresponding support groove 24, the outer ring of the lower turntable 21 enters the inside of the distribution pipeline 4 through the support groove 24; the upper groove surface of the support groove 24 is tangent to the bottom of the feed end of the discharge pipeline 5, so that the seeds can be supported at the position of the feed end of the discharge pipeline; the push groove 23 is located at the upper part of the feed end of the discharge pipeline 5 to ensure the pushing effect of the upper turntable; the curvature of the fan-shaped groove 22 is 130°; the number of the clamping rods 12 is four; the locking groove 13 is triangular; the end corners of the clamping rod 12 and the action rod 18 have arc transitions; the middle part of the action rod 18 is provided with a shift rod 25 located on the outside of the frame, which is used to control the fall of the first seed from the outside to start the discharge mechanism; the feed pipeline 3, the discharge pipeline 5 and the distribution pipeline 4 are tilted.

[0026] Working principle: seeds enter the feed pipe from the seeding box, and after being screened by the screening mechanism, the seeds that do not meet the requirements enter the distribution pipe and the seeds that meet the requirements enter the discharge pipe one by one. The seeds reach the clamping rod position along the discharge pipe. When there are no seeds passing over the action rod below, the action rod is not affected by gravity. At this time, the elastic force of the reset spring keeps the locking rod, the connecting rod and the action rod upward, and the locking rod drives the locking block to be embedded in the locking groove. The clamping disc is kept stationary by the locking disc. The seeds are located above the clamping rod in the discharge pipe and between the clamping rod. The clamping rod separates and supports the seeds one by one; when the seeds pass over the action rod below, the gravity of the seeds pushes the action rod to rotate downward. After rotating downward, the seeds quickly break away from the action rod and enter the soil The seeds at the top enter the clamping rod, and the seeds at the bottom fall down. The process of the action rod being pulled back causes the locking block to re-enter the next locking groove to be locked, and the clamping disc stops rotating to support the seeds at the current position again; after screening, the clamping rod can separate the seeds that meet the size standards individually, and the clamping disc can only rotate when the action rod rotates downward to complete the unloading of a seed. The rotation angle of the clamping disc is automatically controlled each time to ensure that the seeds on the clamping rod fall down one by one in an orderly manner, thereby realizing the sowing of seeds one by one.

[0027] The above embodiments merely illustrate the implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. Furthermore, in this embodiment, the terms "up," "down," "left," "right," "front," and "back" merely represent relative positions and do not represent absolute positions. It should be noted that a person skilled in the art can make various modifications and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be subject to the appended claims.

Claims

1. A seeding mechanism for a seed drill, the seed drill comprising a seeding box (2), characterized in that: The lower part of the seed box (2) is provided with a feed pipe (3), and the ends of the feed pipe (3) are respectively provided with a connected material distribution pipe (4) and a material discharge pipe (5), and the ends of the feed pipe (3) are provided with a screening mechanism (6) corresponding to the material distribution pipe (4) and the material discharge pipe (5), and the material discharge pipe (5) is provided with a material discharge mechanism (7); the side of the material discharge pipe (5) is provided with a clamping port (8) arranged along its axis, and the material discharge mechanism (7) includes an action shaft (9) rotatably connected to the side frame (1) of the upper end of the clamping port (8), and the two ends of the action shaft (9) are respectively provided with a clamping plate (10) and a locking plate (11), and the side of the clamping plate (10) is provided with a material clamping port (8). There are evenly distributed clamping rods (12), the clamping rods (12) are located in the discharge pipe (5) through the clamping port (8), the side of the locking plate (11) is provided with locking grooves (13) corresponding to the number of the clamping rods (12), and the locking grooves (13) are located between adjacent clamping rods (12); a locking rod (14) is provided below the action shaft (9) and is rotatably connected to the frame (1), the top surface of the end of the locking rod (14) is provided with a locking block (15) that fits with the locking groove (13), the middle of the locking rod (14) is provided with a return spring (16) connected to the upper frame (1), and the bottom surface of the end of the locking rod (14) is provided with a connecting rod (1 7), the lower end side of the clamping port (8) is provided with an action rod (18) rotatably connected to the frame (1), the end of the action rod (18) is located in the discharge pipe (5) through the clamping port (8), and the middle of the action rod (18) is rotatably connected to the lower end of the connecting rod (17); the distribution pipe (4) and the feed pipe (3) are colinear, the discharge pipe (5) is a right angle, and the feed end of the discharge pipe (5) is perpendicular to the distribution pipe (4), the screening mechanism (6) includes a driving shaft (19) arranged on the frame (1) on the side of the feed pipe (3), and the driving shaft (19) is provided with an upper turntable (20) and a lower turntable (21) arranged up and down, the upper turntable (20) ) and the lower turntable (21) are both provided with a fan-shaped groove (22) with an arc less than 180°, the two fan-shaped grooves (22) are symmetrically arranged, and the outer edges of the fan-shaped grooves (22) are located on the outer sides of the feed pipeline (3) and the distribution pipeline (4), the end of the feed pipeline (3) and the feed end of the discharge pipeline (5) are provided with a push groove (23) corresponding to the upper turntable (20), the outer ring of the upper turntable (20) enters the feed pipeline (3) and the discharge pipeline (5) through the push groove (23), the distribution pipeline (4) is provided with a support groove (24) corresponding to the lower turntable (21), and the outer ring of the lower turntable (21) enters the distribution pipeline (4) through the support groove (24).

2. The seeding mechanism for a seeder according to claim 1, characterized in that: The upper groove surface of the support groove (24) is tangent to the bottom of the feed end of the discharge pipe (5).

3. The seeding mechanism for a seeder according to claim 1, characterized in that: The push groove (23) is located at the upper portion of the feed end of the discharge pipe (5).

4. The seeding mechanism for a seeder according to claim 1, characterized in that: The arc of the fan-shaped groove (22) is 120°-170°.

5. The seeding mechanism for a seeder according to claim 1, characterized in that: The number of the clamping rods (12) is at least three.

6. The seeding mechanism for a seeder according to claim 1, characterized in that: The locking groove (13) is triangular.

7. The seeding mechanism for a seeder according to claim 1, characterized in that: The end corners of the clamping rod (12) and the action rod (18) both have arc transitions.

8. The seeding mechanism for a seeder according to claim 1, characterized in that: A shifting rod (25) located outside the frame is provided in the middle of the action rod (18).

9. The seeding mechanism for a seeder according to claim 1, characterized in that: The feed pipeline (3), the discharge pipeline (5) and the distribution pipeline (4) are arranged at an inclination.

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