Soil covering mechanism of seeder

Abstract

The utility model provides a soil covering mechanism of a seeder, and belongs to the technical field of agricultural machinery. The problem of how to improve the seed survival rate is solved. According to the soil covering mechanism of the seeding machine, the seeding machine comprises an armrest frame connected with a machine body, the soil covering mechanism comprises a soil covering wheel, a soil ploughing plate and two connecting rods which are arranged in parallel and fixedly connected with the armrest frame, and the soil covering wheel is rotationally connected between the two connecting rods; the soil ploughing plate is connected with the two connecting rods and located between the machine body and the soil covering wheel, the soil ploughing plate is in a long strip shape and inclines downwards towards the front end of the armrest frame, soil ploughing parts are arranged on the two sides of the lower end of the soil ploughing plate, and a receding groove is formed in the position, located between the two soil ploughing parts, of the lower end of the soil ploughing plate. The soil covering mechanism of the seeder can effectively improve the seed survival rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery and relates to a soil covering mechanism of a seed drill. Background Art

[0002] A seeder is an agricultural machine used in the prior art for sowing on large areas of land. It is favored by growers because of its high sowing efficiency, replacing the manual sowing method used in traditional technology.

[0003] For example, a seeding structure of a seeder disclosed in a Chinese patent (application publication number: CN112640630A), the seeder includes a machine body, the seeding structure includes a seeding wheel arranged in the machine body and used for seeding, the seeding wheel includes a wheel body, and the wheel body has a plurality of slide grooves on the circumference for seeds to fall into, both sides of the wheel body are provided with slidable adjusting parts, the two adjusting parts are embedded in the slide grooves and form seed holes for placing seeds in the slide grooves, and the size of the seed holes can be adjusted when the two adjusting parts move relative to the wheel body, bolt assemblies are passed through the two adjusting parts, an elastic assembly is provided between the two adjusting parts, and the elastic assembly presses the two adjusting parts when the bolt assembly is locked.

[0004] Specifically, the seeder is a machine that cooperates with a seeding wheel on the machine body and a seeding nozzle. When the machine body is in a rolling state, the seeding nozzle is inserted into the soil and the seeds are planted in the soil. After that, as shown in the attached Figure 1 As shown, the plow board at the rear of the machine body can turn over the soil, and then the covering wheel rolls over it, thereby successively completing the three steps of sowing, loosening the soil and covering the soil, thereby effectively reducing the work pressure of growers.

[0005] However, during the working process, especially when the plow board turns up the soil, there is a phenomenon that the plow board turns up the seeds together with the soil, which may cause the seeds to be exposed to the air. At the same time, when the covering wheel rolls over, the seeds may be crushed, causing the seed survival rate to be affected. Summary of the invention

[0006] The purpose of the utility model is to solve the above problems in the existing technology and propose a soil covering mechanism for a seed drill. The technical problem to be solved by the utility model is: how to improve the survival rate of seeds.

[0007] The purpose of the utility model can be achieved through the following technical solutions: a soil covering mechanism of a seed drill, the seed drill includes an armrest frame connected to the body, the soil covering mechanism includes a soil covering wheel, a plow board and two connecting rods arranged in parallel and fixedly connected to the armrest frame, the soil covering wheel is rotatably connected between the two connecting rods, the plow board is connected to the two connecting rods and is located between the body and the soil covering wheel, the plow board is in the shape of an elongated strip and is arranged downwardly and inclined toward the front end of the armrest frame, and is characterized in that plowing parts are provided on both sides of the lower end of the plow board, and the lower end of the plow board is located between the two plowing parts to form a clearance groove.

[0008] Compared with the prior art, the soil covering mechanism of the present seeder has the following advantages: through the arrangement of the two plowing parts, a clearance groove is formed at the lower end of the plowing plate and between the two plowing parts. When the seeder is performing sowing, the machine body is inserted into the soil through the seed discharge nozzle to form a seed pit on the soil, and after the seeds are sown into the soil through the seed discharge nozzle, the lower end of the plowing plate (i.e. the two plowing parts) is inserted into the soil on both sides of the seed pit. As the user pushes the handrail frame to make the machine body roll forward continuously, the plowing plate also moves forward with the handrail frame, so that the soil on both sides of the seed pit is continuously turned up, thereby loosening the soil. On this basis, due to the existence of the clearance groove, the soil above the seed pit can pass through the clearance groove, thereby preventing the seeds in the seed pit from being turned out during the soil loosening process, thereby ensuring that the soil can cover the seed pit and the seeds when the subsequent covering wheel rolls over, and preventing the covering wheel from crushing the seeds, thereby ensuring the seed sowing success rate and the seed survival rate.

[0009] In the soil covering mechanism of the above-mentioned seed drill, the clearance groove is a U-shaped groove and the groove opening is flared. The bottom wall of the U-shaped clearance groove is an arc transition to ensure that after loosening the soil, the soil around the seeds is arched, and the bulges can be smoothed after the soil covering wheel rolls over, so that the user can quickly check whether the seed pit is effectively covered by the soil after sowing a whole row of ridges. At the same time, the groove opening of the clearance groove is set to be flared, which can further reduce the contact probability between the plowing part and the seeds in the seed pit, and can appropriately reduce the size of the plowing parts on both sides of the clearance groove, thereby reducing the resistance during the plowing process.

[0010] In the soil covering mechanism of the above-mentioned seed drill, arc grooves are provided on both sides of the plowboard near the middle, so that the elastic coefficient of the plowboard as a whole is improved to a certain extent, and when the plowing part encounters soils of different hardness, the plowboard can deform adaptively, thereby preventing the plowing part from hard contact with hard soil or stones, avoiding damage and breakage of the plowing part, and effectively improving the service life of the plowboard.

[0011] In the soil covering mechanism of the above-mentioned seed drill, the two connecting rods are both long and continuously bent, one end of each connecting rod is a fixed section and the other end is a connecting section, the fixed section of each connecting rod is welded and fixed to the handrail, the covering wheel is rotatably connected between the two connecting sections through a rotating shaft, and the upper end of the plow plate is located above the covering wheel and connected between the two connecting sections through a connecting shaft. Compared with the long straight connecting rod, the continuously bent connecting rod has higher bending resistance, and is welded and fixed to the handrail through the connecting section, and the plow plate and the covering wheel are connected by the connecting section, thereby ensuring a more reasonable installation, ensuring the stability of the connecting rod in the hand, and maximizing the installation firmness of the plow plate and the covering wheel.

[0012] In the soil covering mechanism of the above-mentioned seed drill, a reinforcing rod is welded and fixed between the two connecting sections, and the reinforcing rod is located above the plowboard.

[0013] The provision of the reinforcing rod can further improve the structural stability between the connecting sections of the two connecting rods and ensure that the plow plate is firmly installed. In addition, it is worth mentioning that in the prior art, the covering wheel is divided into a wheel body structure that is symmetrically arranged on the left and right. The two parts of the wheel body are spliced ​​to form the covering wheel. Before splicing, a certain amount of sand and soil will be filled in the covering wheel to ensure the dead weight of the covering wheel and its covering effect on the seed pit. The presence of the reinforcing rod can effectively prevent the connecting sections of the two connecting rods from producing elastic deformation in the left and right directions, and thus can also effectively prevent the two parts of the wheel body constituting the covering wheel from separating. Furthermore, as a preferred scheme, the left and right parts of the wheel body can also be screwed and locked by screws, thereby ensuring that the constructed covering wheel structure is more secure.

[0014] Compared with the existing technology, the soil covering mechanism of this seeder has the following advantages:

[0015] Through the setting of the plowing part, a clearance groove is formed in the middle part of the lower end of the plowing plate corresponding to the seed pit, ensuring that the plowing plate can avoid the seed pit during the plowing process to prevent the seeds from being turned out of the seed pit during the plowing process, thereby avoiding the seeds from being crushed when the subsequent covering wheel rolls over, thereby ensuring the survival rate of the seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the seeder.

[0017] Figure 2 It is a structural diagram of the soil covering mechanism of the seeder.

[0018] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0019] Figure 4It is a structural diagram of the soil covering mechanism of the seeder from another perspective.

[0020] In the figure, 1, handrail frame; 11, machine body; 2, covering wheel; 3, plowing plate; 31, plowing part; 32, clearance groove; 33, arc groove; 4, connecting rod; 41, fixed section; 42, connecting section; 421, reinforcing rod. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 As shown in the figure, in the soil covering mechanism of the seed drill, the seed drill includes a long strip-shaped handrail frame 1 and a body 11 rotatably connected to the front end of the handrail frame 1 through a rotating shaft. For the specific structure and working method of the body 11, please refer to the comparative document CN112640630A. In this embodiment, no more details are given. The soil covering mechanism includes a soil covering wheel 2, a plowing plate 3 and two long strip connecting rods 4, combined with Figure 2 and Figure 4 The two connecting rods 4 are arranged in parallel and are continuously bent, so that each connecting rod 4 forms a fixed section 41 and a connecting section 42 along the length direction. The two connecting rods 4 are welded and fixed to the outer side wall of the handrail frame 1 near the front end through the fixed section 41, so that the two connecting rods 4 are located at the rear of the machine body 11 and are tilted downward toward the rear end of the handrail frame 1. The fixed sections 41 of the two connecting rods 4 are integrally formed with a rotating shaft on the side wall near the lower end edge. The covering wheel 2 specifically includes two cylindrical wheel bodies, which are spliced ​​and positioned and locked by screws to ensure the structural stability of the covering wheel 2. One of the wheel bodies is rotatably connected to the rotating shaft on one of the connecting sections 42, and the other wheel body is rotatably connected to the rotating shaft on the other connecting section 42, and sand is filled in the covering wheel 2 formed by splicing to ensure that the covering wheel 2 itself has a certain weight to ensure the subsequent rolling effect on the soil. In addition, a reinforcing rod 421 is welded and fixed between the connecting sections 42 of the two connecting rods 4, and the reinforcing rod 421 is located above the plow plate 3.

[0023] Combination Figure 3The plowboard 3 is in the shape of a rectangular plate and is bent into a V shape from top to bottom along the width direction. The lower end of the plowboard 3 has two plowing parts 31 located at the edges of both sides of the plowboard 3, and a U-shaped and expanded groove 32 is formed between the two plowing parts 31, and an arc groove 33 is provided inwardly concave near the middle of the side walls of both sides of the plowboard 3. The edges of both sides of the upper end of the plowboard 3 have hinged parts, and an adjustment port is provided on the plate surface of the plowboard 3 between the two hinged parts, and a plurality of adjustment ports are provided on the side walls of the adjustment port along the length direction of the plowboard 3. A first connecting shaft and a second connecting shaft are fixed between the two connecting sections 42, and the second connecting shaft is located obliquely below the first connecting shaft. The plow plate 3 is provided with a first hinge hole and a second hinge hole through the hinge parts on both sides. The two hinge parts are hinged to the first connecting shaft through the first hinge hole, and are hinged to the second connecting shaft through the second hinge hole. As a specific solution, each second hinge hole is a strip hole, and a torsion spring is sleeved on the first connecting shaft, one end of the torsion spring is pressed against the outer wall of the second connecting shaft, and the other end extends into the adjustment port and is pressed against the wall of any one of the adjustment grooves.

[0024] Working principle: the user pushes the handrail frame 1 to make the machine body 11 roll around the axis, insert the sowing nozzle into the soil to form a seed pit, and sow seeds into the seed pit through the sowing nozzle. At the same time, the two plowing parts 31 at the lower end of the plow plate 3 are inserted into the soil and move forward with the handrail frame 1, so that the soil on both sides of the seed pit is turned up to loosen the soil, and the soil above the seed pit passes through the yield groove 32, after which the rolling covering wheel 2 rolls over, so that the turned-over soil buries the seed pit and the seeds in the seed pit.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0026] Although the terms such as handrail frame 1, machine body 11, covering wheel 2, plowboard 3, plowing part 31, clearance groove 32, arc groove 33, connecting rod 4, fixing section 41, connecting section 42, reinforcing rod 421 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A soil covering mechanism of a seed drill, the seed drill comprising a handrail frame (1) connected to a body (11), the soil covering mechanism comprising a soil covering wheel (2), a plowboard (3) and two connecting rods (4) arranged in parallel and fixedly connected to the handrail frame (1), the soil covering wheel (2) being rotatably connected between the two connecting rods (4), the plowboard (3) being connected to the two connecting rods (4) and being located between the body (11) and the soil covering wheel (2), the plowboard (3) being in the shape of an elongated strip and being arranged to be inclined downward toward the front end of the handrail frame (1), characterized in that: The two sides of the lower end of the plowboard (3) are provided with plowing parts (31), and the lower end of the plowboard (3) is located between the two plowing parts (31) to form a clearance groove (32).

2. The soil covering mechanism of the seed drill according to claim 1, characterized in that: The clearance groove (32) is a U-shaped groove and the groove opening is in a flared shape.

3. The soil covering mechanism of the seed drill according to claim 1 or 2, characterized in that: Arc grooves (33) are provided on both sides of the plowboard (3) near the middle.

4. The soil covering mechanism of the seed drill according to claim 3, characterized in that: The two connecting rods (4) are both in the shape of long strips and are continuously bent. One end of each connecting rod (4) is a fixed section (41) and the other end is a connecting section (42). The fixed section (41) of each connecting rod (4) is welded and fixed to the handrail frame (1). The covering wheel (2) is rotatably connected between the two connecting sections (42) via a rotating shaft. The upper end of the plowboard (3) is located above the covering wheel (2) and is connected between the two connecting sections (42) via a connecting shaft.

5. The soil covering mechanism of the seed drill according to claim 4, characterized in that: A reinforcing rod (421) is welded and fixed between the two connecting sections (42), and the reinforcing rod (421) is located above the plowboard (3).

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