A compact integrated seeder

Abstract

The present invention discloses a compact integrated seeder, which includes a seed box, a seeding mechanism and a furrow opener arranged in an upper and lower manner, wherein the furrow opener has a cavity; the seeding mechanism has a seeding wheel and a seeding tube, and also includes a pneumatic pipeline leading to the seeding tube, and the seeding tube extends into the cavity of the furrow opener; the seeding wheel is driven to operate by a first drive shaft; a soil covering mechanism is provided on the rear side of the furrow opener; a sleeve capable of rotating relative to the seeding tube is provided on the periphery of the seeding tube, and a soil guiding channel leading from the front end thereof to the sleeve is provided in the furrow opener; a soil stirring mechanism is installed in the sleeve, and the sleeve can rotate relative to the seeding tube; the sleeve can rotate relative to the seeding tube; the sleeve is driven to operate by a second drive shaft, and the two ends of the second drive shaft are respectively rotatably installed relative to the left and right side walls of the furrow opener; the first drive shaft and the second drive shaft establish a linkage rotation relationship through a linkage mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of seed drills, and in particular to an integrated seed drill with a compact structure. Background Art

[0002] The seeder is an important component of automated seeding agricultural machinery. It generally includes a seed box, a seed meter, a furrow opener and a soil covering mechanism. The seed trough is opened by the furrow opener, and the seed meter accurately takes the seeds in the seed box and discharges the seeds into the seed trough through the seed feeding tube. The soil covering mechanism then covers the seed trough with soil, thus completing automatic troughing, seeding and soil covering.

[0003] In the prior art, there are the following technical problems:

[0004] (1) In order to enable seeds to be discharged from the seeding tube into the seeding trough in time, pneumatic seeding is often used to assist seeding, that is, air flow is introduced into the seeding tube to enable seeds to be discharged in time. After the seeds are discharged, they often bounce out of the seeding trough or bounce far away from the planting route. In the prior art, the dropped seeds are generally pressed in time by a seed pressing wheel (as shown in patent CN216960759U). This solution will significantly increase the volume of the structure, and the seed pressing solution is not suitable for relatively fragile seeds, which can easily damage the seeds. The use of other complex solutions may significantly increase the volume of the structure and the complexity of the transmission; this is the technical problem mainly solved by this application.

[0005] (2) In the existing seeding scheme based on the seeding wheel, the seed filling holes on the seeding wheel are easily blocked, resulting in missed seeding. In the prior art, patent CN201194476Y provides a solution for clearing the blockage using a needle valve. This solution requires a needle valve to be set for each seeding hole. Not only is the structure complex, but the probability of mechanical failure is also high. Patent CN208821198U provides a solution for clearing the blockage using a clearing roller. The clearing roller has clearing teeth that can act on the suction holes on the roller. The cooperation between the clearing teeth and the suction holes can drive the clearing roller to operate at the same time. Although this solution can clear the blockage and perform power transmission at the same time, the mechanical impact of this method is very large, the clearing roller does not operate smoothly, and the clearing teeth wear very severely. It is easy for the clearing teeth to not fit into the suction holes, and the stability is very low.

[0006] (3) The soil covering mechanism in the existing seed drill is relatively large, which will significantly increase the volume of the mechanism. Summary of the Invention

[0007] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an integrated seeder with a compact structure.

[0008] Technical Solution: To achieve the above-mentioned objectives, the present invention provides a compact integrated seeder, comprising a seed box, a seeding mechanism, and a furrow opener arranged in an upper and lower arrangement, wherein the furrow opener has a cavity therein; the seeding mechanism comprises a seeding wheel and a seeding tube, and further comprises a pneumatic pipe leading to the seeding tube, wherein the seeding tube extends into the cavity of the furrow opener; the seeding wheel is driven by a first drive shaft; and a soil covering mechanism is provided on the rear side of the furrow opener;

[0009] The outer periphery of the seeding tube is provided with a sleeve that can rotate relative to the seeding tube, and the furrow opener is provided with a soil guide channel from its front end to the sleeve; a soil stirring mechanism is installed in the sleeve, and the sleeve can rotate relative to the seeding tube;

[0010] The sleeve is rotatable relative to the seeding tube; the sleeve is driven to operate by a second drive shaft, and both ends of the second drive shaft are rotatably mounted relative to the left and right side walls of the furrow opener respectively;

[0011] The first drive shaft and the second drive shaft establish a linkage rotation relationship through a linkage mechanism.

[0012] Furthermore, the covering mechanism includes a covering plate that is tilted with the front higher and the rear lower, and also includes a rod fixed on the covering plate, the rod being rotatably connected to the rear end of the furrow opener; and a torsion spring is provided between the furrow opener and the rod, the torsion spring causing the covering plate to have a downward rotation tendency; the rear side edge of the covering plate has a groove.

[0013] Furthermore, a limiting member is installed at the rear end of the furrow opener, and the limiting member can limit the rod from rotating downward.

[0014] Furthermore, the seeding wheel has seed filling holes arranged in a circumferential array; the seeding mechanism also includes a seed protection arc plate;

[0015] The seeding wheel has a circular hollow portion in the middle; an internal gear is fixed in the circular hollow portion, and a first gear meshing with the internal gear is also installed on the seat of the seeding mechanism;

[0016] The seeding mechanism further comprises a seed clearing wheel fixed coaxially with the first gear, the seed clearing wheel having push rods arranged in a circumferential array; the position of each seed filling hole in the seeding wheel is provided with an ejection groove for the push rod to be embedded.

[0017] Furthermore, the seed-metering mechanism further includes a second gear centrally arranged relative to the seed-metering wheel, the first gear is engaged with the second gear, and the first drive shaft drives the second gear to rotate.

[0018] Furthermore, the soil guiding channel has a spiral conveying component, which can rotate relative to the soil guiding channel; the rear side of the spiral conveying component has a driving cylinder that is sleeved and fixed on its outside, and a transmission connection relationship is established between the driving cylinder and the sleeve through a bevel gear set.

[0019] Furthermore, a transmission relationship is established between the second drive shaft and the sleeve via a worm gear mechanism.

[0020] Furthermore, the soil stirring mechanism is a plurality of spokes arranged in a spiral shape.

[0021] Beneficial effects: The compact integrated seeder of the present invention has the following beneficial effects:

[0022] (1) The structure is compact, and the seeds are guided to the sleeve through the soil guide channel, and the soil is removed through the annular channel between the seeding tube and the sleeve to dissipate the kinetic energy of the seeds ejected from the seeding tube, thereby reducing seed splashing; and a linkage relationship between the sleeve and the seeding mechanism is established through the first drive shaft, the second drive shaft and the linkage mechanism, so that one power source can drive the entire seeder to operate, thereby reducing the cost and occupied volume of the drive system;

[0023] (2) The meshing relationship between the first gear and the internal gear is used to ensure the smooth movement of the seed wheel, and the action rhythm of the push rod on the seed filling hole is fully coordinated. The push rod only needs to bear the role of clearing the blockage, thereby achieving a good seed clearing effect;

[0024] (3) The soil covering mechanism has a compact structure and requires very little installation space, which can maintain the compactness of the seeder structure. In addition, the soil covering plate can be adjusted up and down according to the amount of soil, achieving a better soil covering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural diagram of the integrated seeder;

[0026] Figure 2 This is a front view of the integrated seeder;

[0027] Figure 3 It is a cross-sectional structural diagram of an integrated seeder;

[0028] Figure 4 for Figure 3 A magnified structural diagram of part A;

[0029] Figure 5 This is the structural diagram of the sleeve and soil stirring mechanism;

[0030] Figure 6 This is the organizational diagram of the seed arrangement mechanism;

[0031] Figure 7This is a partially enlarged structural diagram of the seed-discharging mechanism.

[0032] In the figure: 1-seed box; 2-seeding mechanism; 21-seeding wheel; 21a-seed filling hole; 21b-ejection groove; 22-seed throwing tube; 23-pneumatic pipeline; 25-first drive shaft; 26-seed arc plate; 27-inner gear; 28-base; 29-first gear; 210-seed cleaning wheel; 211-elevator; 212-second gear; 3-ditching device; 4-soil covering mechanism; 41-soil covering plate; 42-rod; 43-torsion spring; 44-limiting member; 51-sleeve; 52-soil guiding channel; 53-screw conveying component; 54-driving cylinder; 55-bevel gear set; 56-worm gear mechanism; 57-soil stirring mechanism; 58-second drive shaft; 59-transfer manifold; 6-linkage mechanism. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] like Figure 1-3 The compact integrated seeder shown includes a seed box 1, a seeding mechanism 2 and a furrow opener 3 arranged in an upper and lower manner, wherein the furrow opener 3 has a cavity therein; the seeding mechanism 2 has a seeding wheel 21 and a seed dropping tube 22, and also includes a pneumatic pipe 23 leading to the seed dropping tube 22, and the airflow entering the pneumatic pipe 23 can assist the seeds to fall from the seed dropping tube 22, and the seed dropping tube 22 extends into the cavity of the furrow opener 3; the seeding wheel 21 is driven by a first drive shaft 25; and a soil covering mechanism 4 is provided on the rear side of the furrow opener 3.

[0035] The outer periphery of the seeding tube 22 is provided with a sleeve 51 which can rotate relative to the seeding tube 22. The furrow opener 3 is provided with a soil guide channel 52 which leads from its front end to the sleeve 51. During the movement of the furrow opener 3, part of the soil on the front side can enter the sleeve 51 through the soil guide channel 52 and fall through the annular gap between the sleeve 51 and the seeding tube 22. A soil stirring mechanism 57 is installed in the sleeve 51, and the sleeve 51 can rotate relative to the seeding tube 22. Figure 5 As shown, the soil stirring mechanism 57 in this embodiment is a plurality of spokes arranged in a spiral shape. With this arrangement, the soil stirring mechanism 57 can promote the falling of the soil while making the soil fall evenly along the annular gap.

[0036] The sleeve 51 can rotate relative to the seeding tube 22 so that the soil entering the sleeve 51 can fall evenly from the annular gap. The soil falling from the annular gap can dissipate the kinetic energy of the seeds dropped in the seeding tube 22 and prevent the seeds from bouncing excessively. The sleeve 51 is driven to operate by the second drive shaft 58, and the two ends of the second drive shaft 58 are respectively rotatably installed relative to the left and right side walls of the furrow opener 3.

[0037] The first drive shaft 25 and the second drive shaft 58 establish a linkage rotation relationship through a linkage mechanism 6. The linkage mechanism 6 is a chain mechanism.

[0038] The above-mentioned integrated seeder has a compact structure and layout, and the seeds are guided to the sleeve 51 through the soil guide channel 52, and the soil is removed through the annular channel between the seeding tube 22 and the sleeve 51 to dissipate the kinetic energy of the seeds ejected from the seeding tube 22, thereby reducing seed splashing; and a linkage relationship between the sleeve 51 and the seeding mechanism 2 is established through the first drive shaft 25, the second drive shaft 58 and the linkage mechanism 6, so that one power source can drive the entire seeder to operate, thereby reducing the cost and occupied volume of the drive system.

[0039] The covering mechanism 4 includes a covering plate 41, which is tilted and arranged higher in front and lower in the back. It also includes a rod 42 fixed to the covering plate 41 and rotatably connected to the rear end of the trench opener 3. A torsion spring 43 is provided between the trench opener 3 and the rod 42, which forces the covering plate 41 to rotate downward. The rear edge of the covering plate 41 has a groove. A limiting member 44 is installed at the rear end of the trench opener 3 to limit the downward rotation of the rod 42.

[0040] The soil covering mechanism 4 adopts the above structure, which is compact and requires little installation space, so as to maintain the compactness of the seeder structure. Moreover, the soil covering plate 41 can adaptively adjust the height up and down according to the amount of soil, thereby achieving a better soil covering effect.

[0041] like Figure 6 As shown, the seeding wheel 21 has seed filling holes 21a arranged in a circular array; the seeding mechanism 2 also includes a seed protection arc plate 26, the seed filling holes 21a obtain seeds from the seed box 1 at the upper end of the seed protection arc plate 26, and release the seeds to the seed dropping tube 22 from the lower end of the seed protection arc plate 26; the seeding wheel 21 has a circular hollow portion in the middle; an internal gear 27 is fixed in the circular hollow portion, and a first gear 29 meshing with the internal gear 27 is also installed on the seat 28 of the seeding mechanism 2; the seeding mechanism 2 also includes a seed clearing wheel 210 coaxially fixed with the first gear 29, and the seed clearing wheel 210 has push rods 211 arranged in a circular array; the position corresponding to each seed filling hole 21a in the seeding wheel 21 has an ejection groove 21b for the push rod 211 to be embedded. As shown Figure 7 As shown, the ejector groove 21b is a structure that gradually narrows in the axial direction away from the seed wheel 21, and its two side profiles are both involutes. This can minimize the size of the ejector groove 21b and ensure that the ejector rod 211 can smoothly act on the seed filling hole 21a.

[0042] The number of teeth on the first gear 29 is consistent with the number of push rods 211 on the seed-clearing wheel 210, and the number of teeth on the internal gear 27 is consistent with the number of seed-filling holes 21a. The midpoint of each tooth root on the internal gear 27 has a seed-filling hole 21a radially aligned with it. In this way, while the first gear 29 is meshing with the internal gear 27, the push rods 211 on the seed-filling holes 21a can act on the seed-filling holes 21a corresponding to the lower side of the seed-protecting arc plate 26, ejecting the seeds in the seed-filling holes 21a and achieving sufficient seeding. In the above structure, the first gear 29 and the seed-clearing wheel 210 rotate at the same speed. By optimizing the layout design, the meshing relationship between the first gear 29 and the internal gear 27 can be used to ensure the smooth movement of the seed-clearing wheel 1, fully coordinate the action rhythm of the push rods 211 on the seed-filling holes 21a, and achieve a good seed-clearing effect.

[0043] Preferably, the seed-metering mechanism 2 further includes a second gear 212 centrally arranged relative to the seed-metering wheel 21 , the first gear 29 is engaged with the second gear 212 , and the first driving shaft 25 drives the second gear 212 to rotate.

[0044] Preferably, the soil guide channel 52 includes a spiral conveying component 53 that is rotatable relative to the soil guide channel 52. A drive cylinder 54 is sleeved and fixed to the rear side of the spiral conveying component 53. A bevel gear set 55 establishes a transmission connection between the drive cylinder 54 and the sleeve 51. This allows the drive cylinder 54 to both drive the spiral conveying component 53 and allow soil to pass through the drive cylinder 54 and enter the annular channel between the seeding tube 22 and the sleeve 51. In this embodiment, the drive cylinder 54 is connected to the sleeve 51 via a transfer manifold 59. A worm gear mechanism 56 establishes a transmission relationship between the second drive shaft 58 and the sleeve 51. This structure ensures that the bevel gear set 55 and the worm gear mechanism 56 are not affected by soil and seeds.

[0045] 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 compact integrated seeder, comprising a seed box (1), a seeding mechanism (2) and a furrow opener (3) arranged in an upper and lower manner, wherein the furrow opener (3) has a cavity therein; the seeding mechanism (2) has a seeding wheel (21) and a seeding tube (22), and further comprises a pneumatic pipe (23) leading to the seeding tube (22), wherein the seeding tube (22) extends into the cavity of the furrow opener (3); the seeding wheel (21) is driven by a first drive shaft (25); and a soil covering mechanism (4) is provided on the rear side of the furrow opener (3); Its characteristics are: The outer periphery of the seeding tube (22) is provided with a sleeve (51) capable of rotating relative thereto, and the furrow opener (3) is provided with a soil guide channel (52) extending from its front end to the sleeve (51); a soil stirring mechanism (57) is installed in the sleeve (51), and the sleeve (51) is capable of rotating relative to the seeding tube (22); The sleeve (51) is rotatable relative to the seeding tube (22); the sleeve (51) is driven to operate by a second drive shaft (58), and both ends of the second drive shaft (58) are rotatably mounted relative to the left and right side walls of the furrow opener (3); The first drive shaft (25) and the second drive shaft (58) establish a linkage rotation relationship through a linkage mechanism (6); The soil guide channel (52) has a spiral conveying component (53) therein, and the spiral conveying component (53) is rotatable relative to the soil guide channel (52); the rear side of the spiral conveying component (53) has a driving cylinder (54) sleeved and fixed on the outside thereof, and a transmission connection relationship is established between the driving cylinder (54) and the sleeve (51) via a bevel gear set (55); the driving cylinder (54) is connected to the sleeve (51) via a transfer manifold (59).

2. The compact integrated seeder according to claim 1, characterized in that: The covering mechanism (4) comprises a covering plate (41) arranged obliquely with a higher front and a lower rear, and a rod (42) fixed to the covering plate (41), wherein the rod (42) is rotatably connected to the rear end of the furrow opener (3); a torsion spring (43) is provided between the furrow opener (3) and the rod (42), wherein the torsion spring (43) causes the covering plate (41) to have a downward rotation tendency; and a groove is provided on the rear edge of the covering plate (41).

3. The compact integrated seeder according to claim 2, characterized in that: A limiting member (44) is installed at the rear end of the furrow opener (3), and the limiting member (44) can limit the rod (42) from rotating downward.

4. The compact integrated seeder according to claim 1, characterized in that: The seeding wheel (21) has seed filling holes (21a) arranged in a circumferential array; the seeding mechanism (2) also includes a seed protection arc plate (26); The seeding wheel (21) has a circular hollow portion in the middle; an internal gear (27) is fixed in the circular hollow portion, and a first gear (29) meshing with the internal gear (27) is also installed on the seat (28) of the seeding mechanism (2); The seeding mechanism (2) further comprises a seed clearing wheel (210) fixed coaxially with the first gear (29), the seed clearing wheel (210) having push rods (211) arranged in a circumferential array; and a position corresponding to each seed filling hole (21a) in the seeding wheel (21) has an ejection groove (21b) for the push rod (211) to be embedded.

5. The compact integrated seeder according to claim 4, characterized in that: The seed-metering mechanism (2) further includes a second gear (212) centrally arranged relative to the seed-metering wheel (21), the first gear (29) meshes with the second gear (212), and the first drive shaft (25) drives the second gear (212) to rotate.

6. The compact integrated seeder according to claim 1, characterized in that: A transmission relationship is established between the second drive shaft (58) and the sleeve (51) via a worm gear mechanism (56).

7. The compact integrated seeder according to claim 1, characterized in that: The soil stirring mechanism (57) is a plurality of spokes arranged in a spiral shape.

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