A trenching and soil covering device for preventing seeds from splashing

Abstract

The present invention discloses a furrowing and soil-covering device for preventing seed splashing. The device comprises a furrowing opener and a soil-covering mechanism arranged front and back, wherein the interior of the furrowing opener is a hollow structure; the device also comprises a seed-discharging tube extending into the furrowing opener; a sleeve is provided on the outer side of the seed-discharging tube, and an annular gap is formed between the sleeve and the seed-discharging tube; the front side of the furrowing opener has a soil-guiding channel connected to the annular gap, and an actively operating spiral component is installed in the soil-guiding channel. Compared with the traditional method of preventing seed splashing by pressing the seeds with a seed-pressing wheel, the overall structure of the present invention is more compact, which can effectively reduce the space occupied by the furrowing and soil-covering device and is conducive to the miniaturization of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a trenching and soil covering device for preventing seeds from splashing. Background Art

[0002] In agricultural machinery, during sowing operations, airflow is often used to assist seeds in being discharged from a seeding tube. The seeds fall out at a relatively fast speed and inevitably bounce. In the prior art, a seed pressing wheel is mainly used to press the seeds in time to prevent them from splashing. As shown in patent CN 216960759U, the seed pressing wheel will significantly increase the size of the structure and may crush the seeds. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a trenching and soil covering device that can effectively prevent seeds from splashing and avoid crushing seeds.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides a furrowing and soil covering device for preventing seed splashing, which comprises a furrow opener and a soil covering mechanism arranged front and back, wherein the interior of the furrow opener is a hollow structure; and further comprises a seed discharge tube extending into the furrow opener;

[0005] A sleeve is provided on the outer side of the seed discharging pipe, and an annular gap is formed between the sleeve and the seed discharging pipe;

[0006] The front side of the furrow opener is provided with a soil guiding channel connected to the annular gap, and a spiral component capable of active operation is installed in the soil guiding channel.

[0007] Furthermore, the sleeve can rotate relative to the seeding tube, and a stirring structure capable of stirring the soil is provided inside the sleeve.

[0008] Furthermore, the stirring structure includes a plurality of spokes arranged in a spiral shape, the spokes extending radially along the sleeve. The spirally arranged spokes can, on the one hand, allow soil entering the annular gap to move downward without clogging, and on the other hand, allow soil in the annular gap to fall evenly along the circumference of the annular gap, ensuring coverage of the fallen seeds.

[0009] Furthermore, an outer tube is sleeved on the rear end of the spiral component, the outer tube is fixed relative to the spiral component, and a portion of the spiral component is also formed inside the outer tube, so that soil can be pushed backward and pass through the outer tube into the annular gap. A first bevel gear is fixed on the periphery of the outer tube; a second bevel gear is installed on the periphery of the sleeve; the first bevel gear is meshed with the second bevel gear;

[0010] A transition piece is mounted on the upper end of the sleeve, fixed relative to the seed tube. The transition piece comprises a main portion and a branch portion that engage the sleeve and outer tube, respectively. This structure establishes a coordinated rotational relationship between the spiral component and the sleeve, and with the transmission structure located outside the sleeve, it effectively prevents soil or seeds from entering between the two bevel gears and causing mechanical failure.

[0011] Furthermore, the sleeve is connected to a power access mechanism.

[0012] Furthermore, a bearing mechanism is provided between the upper end of the sleeve and the main body, and the bearing mechanism can enable the sleeve to rotate smoothly relative to the seed tube.

[0013] Beneficial effect: The trenching and soil covering device for preventing seeds from splashing of the present invention is provided with a sleeve, a soil guide channel and a spiral component. In the process of the trenching move forward by the trenching device, part of the soil enters the front end of the soil guide channel and is transported by the spiral component to the annular gap and falls from the annular gap; in this way, the seeds dropped from the seed discharge tube will be immediately covered by the soil dropped from the annular gap, and the soil in the annular gap can effectively dissipate the kinetic energy of the seeds and press the seeds. The above process is all completed in the internal space of the trenching device. When the trenching device moves forward and the seed placement position is located at the rear side of the trenching device, the soil covering mechanism continues to cover the dropped seeds with soil to completely fill the seed groove opened by the trenching device and complete the sowing operation. In the above structure, compared with the traditional method of preventing seeds from splashing by pressing seeds with a seed pressing wheel, the overall structure of the present invention is more compact, which can effectively reduce the space occupied by the trenching and soil covering device and is conducive to the miniaturization of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A cross-sectional structural diagram of the trenching and covering device to prevent seeds from splashing;

[0015] Figure 2 Outline drawing of the trenching and covering device to prevent seeds from splashing;

[0016] Figure 3 This is the distribution structure diagram of the spokes in the casing.

[0017] In the figure: 1-furrow opener; 2-soil covering mechanism; 3-seed pipe; 4-casing; 4a-spoke; a-annular gap; 5-soil guide channel; 6-spiral component; 6a-outer tube; 71-first bevel gear; 72-second bevel gear; 73-power access mechanism; 74-bearing mechanism; 8-transition piece; 8a-main body; 8b-branch part. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1-2The furrowing and soil-covering device for preventing seeds from splashing shown in the figure includes a furrow opener 1 and a soil-covering mechanism 2 arranged in a front-to-back manner, the interior of the furrow opener 1 being a hollow structure; it also includes a seed-discharging tube 3 extending into the furrow opener 1; a sleeve 4 is provided on the outer side of the seed-discharging tube 3, and an annular gap a is formed between the sleeve 4 and the seed-discharging tube 3; the front side of the furrow opener 1 has a soil-guiding channel 5 connected to the annular gap a, and a spiral component 6 capable of active operation is installed in the soil-guiding channel 5.

[0020] With the above structure, by setting up the sleeve 4, the soil guide channel 5 and the spiral component 6, when the furrow opener 1 moves forward to open the furrow, part of the soil enters the front end of the soil guide channel 5, and is transported by the spiral component 6 to the annular gap a and falls from the annular gap; in this way, the seeds dropped by the seed discharge tube 3 will be immediately covered by the soil dropped from the annular gap a. The soil in the annular gap a can effectively dissipate the kinetic energy of the seeds and press the seeds. The above process is completed in the internal space of the furrow opener 1. When the furrow opener 1 moves forward and the seed placement position is located at the rear side of the furrow opener 1, the covering mechanism 2 continues to cover the dropped seeds with soil to completely fill the seed groove opened by the furrow opener and complete the sowing operation.

[0021] In the above structure, compared with the traditional method of preventing seeds from splashing by pressing seeds with a seed pressing wheel, the overall structure of the present invention is more compact, which can effectively reduce the space occupied by the trenching and covering device, and is conducive to the miniaturization of the equipment.

[0022] Preferably, the sleeve 4 can rotate relative to the seeding tube 3, and the sleeve 4 has a stirring structure capable of stirring the soil. Figure 3 As shown, the stirring structure includes a plurality of spokes 4a distributed in a spiral shape, and the spokes 4a extend radially along the sleeve 4. The provision of the spirally distributed spokes 4a allows, on the one hand, soil entering the annular gap a to move downward without clogging, and on the other hand, allows the soil in the annular gap a to fall evenly along the circumference of the annular gap a, ensuring coverage of the fallen seeds.

[0023] The rear end of the spiral component 6 is sheathed with an outer tube 6a, which is fixed relative to the spiral component 6 and also contains a portion of the spiral component 6. This allows soil to be pushed backward and pass through the outer tube 6a into the annular gap a. A first bevel gear 71 is fixed to the periphery of the outer tube 6a; a second bevel gear 72 is mounted on the periphery of the sleeve 4; the first bevel gear 71 meshes with the second bevel gear 72. The upper end of the sleeve 4 is mounted with a transition piece 8 fixed relative to the seed tube 3. The transition piece 8 comprises a main portion 8a and a branch portion 8b that respectively engage the sleeve 4 and the outer tube 6a. This structure establishes a coordinated rotational relationship between the spiral component 6 and the sleeve 4, and by locating the transmission mechanism outside the sleeve 4, it effectively prevents soil or seed from entering between the two bevel gears and causing mechanical failure. The sleeve 4 is connected to a power input mechanism 73.

[0024] A bearing mechanism 74 is provided between the upper end of the sleeve 4 and the main body 8 a , and the bearing mechanism 74 can enable the sleeve 4 to rotate smoothly relative to the seed tube 3 .

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A furrowing and soil covering device for preventing seeds from splashing, comprising a furrowing device (1) and a soil covering mechanism (2) arranged in a front-to-back manner, wherein the interior of the furrowing device (1) is a hollow structure; and further comprising a seed discharge tube (3) extending into the furrowing device (1); characterized in that: The outer side of the seed discharging tube (3) is provided with a sleeve (4), and an annular gap (a) is formed between the sleeve (4) and the seed discharging tube (3); The front side of the interior of the furrow opener (1) is provided with a soil guide channel (5) connected to the annular gap (a), and a spiral component (6) capable of active operation is installed in the soil guide channel (5); The sleeve (4) is rotatable relative to the seeding tube (3), and a stirring structure capable of stirring soil is provided inside the sleeve (4); The rear end of the spiral component (6) is sleeved with an outer tube (6a), the outer tube (6a) is fixed relative to the spiral component (6), and a first bevel gear (71) is fixed to the periphery of the outer tube (6a); a second bevel gear (72) is installed on the periphery of the sleeve (4); the first bevel gear (71) is meshed with the second bevel gear (72); The upper end of the sleeve (4) is provided with a transition piece (8) fixed relative to the seeding tube (3), and the transition piece (8) comprises a main body (8a) and a branch portion (8b) respectively docked with the sleeve (4) and the outer tube (6a).

2. The trenching and soil covering device for preventing seed splashing according to claim 1 is characterized in that: The stirring structure comprises a plurality of spokes (4a) distributed in a spiral shape, and the spokes (4a) extend along the radial direction of the sleeve (4).

3. The trenching and soil covering device for preventing seed splashing according to claim 1, characterized in that: The sleeve (4) is connected to a power access mechanism (73).

4. The trenching and soil covering device for preventing seed splashing according to claim 1, characterized in that: A bearing mechanism (74) is provided between the upper end of the sleeve (4) and the main body (8a).

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