Seed discharging mechanism

Abstract

The utility model discloses a seed discharging mechanism which is characterized in that a seed inlet and a seed outlet are respectively formed in the upper side and the lower side of a case; the seed box is fixed above the case and is communicated with the seed inlet; a seed outlet wheel is horizontally and rotatably supported in the case, and a seed groove and a through hole are formed in the outer side wall of the seed outlet wheel; a head-tail closed limiting groove is formed in the inner wall of one end of the case; a seed baffle is inserted into the through hole; the connecting piece is respectively fixed with the seed baffle and the connecting shaft; the connecting shaft is sleeved with a bearing, and the bearing is limited in the limiting groove in a rolling mode. By designing the seed blocking mechanism, the seed outlet wheel can drive the seed blocking plate to rotate when rotating, the seed blocking plate can drive the bearing to move in the limiting groove when rotating, when the seed blocking plate moves to the inner side of the seed inlet, the seed blocking plate can extend out of the through hole, and the extending seed blocking plate can move forwards to stir seeds on the inner side of the seed inlet. It is ensured that seeds can be reliably filled in the front seed groove, the empty seed groove is prevented from corresponding to the position of the seed outlet, and the seeding uniformity is ensured.

Description

Technical Field

[0001] The utility model relates to the field of sowing equipment, and more specifically to a seed discharging mechanism. Background Art

[0002] The seeder is suitable for large-scale crop planting. Due to the large sowing area and limited sowing time, it is necessary to improve the sowing efficiency of the seeder. As the traveling speed of the seeder increases during the sowing process, the rotation speed of the seed wheel on the seeder will also increase accordingly; however, while ensuring the sowing speed, the seed discharge mechanism on the seeder will cause some problems. For example, a seed groove is provided on the outer wall of the seed wheel. As the rotation speed of the seed wheel increases, the seeds in the seed groove will be thrown out before entering the sowing mechanism below, or the seeds in the seed box have not yet had time to enter the seed groove. Due to the fast rotation speed of the seed wheel, the seed groove has been moved out of the seed inlet, resulting in no seeds in the seed groove, which may cause the seeder to miss seeds, that is, uneven sowing.

[0003] Therefore, how to provide a seed discharging mechanism that can overcome the above problems is an issue that technical personnel in this field urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides a seed discharging mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A seed discharging mechanism, installed on a seeder, comprises:

[0007] A chassis, the chassis is horizontally fixed on the frame of the seed drill, the inner contour of the cross section of the chassis is circular, the upper side wall of the chassis is provided with a rectangular seed inlet, the length direction of the seed inlet is the same as the length direction of the chassis, and the lower side wall of the chassis is provided with a seed outlet;

[0008] A seed box, the seed box is fixed above the machine box, the lower side wall of the seed box is opened and communicated with the seed inlet, and the seed box can contain seeds;

[0009] A seeding wheel, the seeding wheel is horizontally rotatably supported in the chassis, the seeding wheel is drivingly connected to the power output end of the seeder, a plurality of seed grooves are evenly opened circumferentially on the outer wall of the seeding wheel, the seed inlet and the seed outlet can correspond to and be connected with the positions of the seed grooves; the axis of the seeding wheel coincides with the axis of the inner contour of the chassis, the outer wall of the seeding wheel and the inner wall of the chassis have a gap, and the gap is smaller than the minimum particle size of the seeds;

[0010] The seed blocking mechanism comprises a seed blocking plate, a connecting piece, a connecting shaft and a bearing, the seed wheel is hollow inside and one end is open and the other end is closed, the inner wall of one end of the chassis close to the open end of the seed wheel is provided with a limit groove closed at both ends, and the limit groove is located on the inner side of the open end of the seed wheel; a plurality of through holes are evenly opened circumferentially on the side wall of the seed wheel, and the plurality of through holes and the plurality of seed grooves are arranged alternately in sequence, and a seed blocking plate is slidably inserted in each of the through holes, the width direction of the seed blocking plate is parallel to the axis line of the seed wheel, and the seed groove is located between the two long sides of the seed blocking plate; a plurality of the connecting pieces and the connecting shaft are arranged on the inner side of the seed wheel, and one end of the plurality of the connecting pieces is respectively connected to the One end is fixed, and the other ends of multiple connecting members are respectively fixed to multiple connecting shafts; the axis line of the connecting shaft is parallel to the axis line of the seed wheel, and each connecting shaft is equipped with the bearing, and multiple bearings are limited in the limiting groove, and the outer ring of the bearing can roll and abut against the inner wall of the limiting groove; the end of the seed retaining plate away from the connecting member can be limited on the inner side of the through hole, and the outer side wall of the seed wheel is limited between the two ends of the seed retaining plate located on the inner side of the seed inlet, and the shortest distance between the end of the seed retaining plate located on the inner side of the seed inlet away from the connecting member and the outer side wall of the seed wheel is greater than the maximum particle size of the seed, and the seed groove and a seed retaining plate adjacent to it are moved out of the seed inlet in sequence.

[0011] It can be known from the above technical scheme that compared with the prior art, the utility model discloses a seed discharging mechanism. The utility model designs a seed blocking mechanism. The seed blocking plate in the seed blocking mechanism is connected to the bearing through a connecting piece and a connecting shaft. The bearing is located in a limiting groove. When the seed discharging wheel rotates, it will drive the seed blocking plate to rotate. When the seed blocking plate rotates, it will drive the bearing to move in the limiting groove. Since the limiting groove has a limiting effect on the bearing, when the seed blocking plate moves to the inside of the seed inlet, the seed blocking plate will extend from the through hole. The extended seed blocking plate will push the seeds on the inside of the seed inlet forward to ensure that the seed slot in front of it can be reliably filled with seeds. The seeds that have entered the seed slot will not be thrown out due to the excessively fast rotation speed of the seed discharging wheel, thereby avoiding the empty seed slot corresponding to the position of the seed outlet, thereby ensuring the uniformity of sowing.

[0012] Preferably, the cross-section of the seed groove is semicircular, and the maximum groove depth of the seed groove is greater than the maximum particle size of the seed. This design ensures that the seed groove can reliably contain the seeds.

[0013] Preferably, a rotating shaft is coaxially fixed to the closed end of the seeding wheel, the rotating shaft is rotatably connected to one end of the chassis, the end of the rotating shaft away from the seeding wheel is located outside the chassis, and the rotating shaft and the power output end of the seeder are driven by a chain, a gear or a belt. The chassis can reliably support the seeding wheel for rotation, and the seeding wheel can be effectively connected to the power output end of the seeder for transmission.

[0014] Preferably, each of the connecting shafts is provided with a plurality of the bearings. This design can improve the stability of the seed retaining plate in telescopic sliding in the through hole.

[0015] Preferably, the cross-sectional shape of the seed retaining plate matches the shape of the through hole, and the gap between the outer wall of the seed retaining plate and the hole wall of the through hole is smaller than the minimum particle size of the seed. The seed will not leak into the gap between the seed retaining plate and the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is an overall axonometric view of a seed discharging mechanism;

[0018] Figure 2 It is an exploded axonometric view of a seed discharging mechanism;

[0019] Figure 3 It is a partial axonometric view of a seed discharging mechanism;

[0020] Figure 4 The present invention is a cross-sectional view of a seed discharging mechanism.

[0021] In the figure:

[0022] 1 is a chassis, 10 is a seed inlet, 11 is a seed outlet, 12 is a limit slot, 2 is a seed box, 3 is a seed wheel, 30 is a seed slot, 31 is a through hole, 4 is a seed blocking mechanism, 40 is a seed blocking plate, 41 is a connecting piece, 42 is a connecting shaft, 43 is a bearing, and 5 is a rotating shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The utility model discloses a seed discharging mechanism. The utility model designs a seed blocking mechanism 4. A seed blocking plate 40 in the seed blocking mechanism 4 is connected to a bearing 43 through a connecting piece 41 and a connecting shaft 42. The bearing 43 is located in a limiting groove 12. When the seed discharging wheel 3 rotates, the seed blocking plate 40 is driven to rotate. When the seed blocking plate 40 rotates, the bearing 43 is driven to move in the limiting groove 12. Since the limiting groove 12 has a limiting effect on the bearing 43, when the seed blocking plate 40 moves to the inner side of the seed inlet 10, The seed retaining plate 40 will extend from the through hole 31, and the extended seed retaining plate 40 will push the seeds inside the seed inlet 10 forward to ensure that the seed slot 30 in front of it can be reliably filled with seeds, and the seeds that have entered the seed slot 30 will not be thrown out due to the excessively fast rotation speed of the seed wheel 3, thereby avoiding the empty seed slot 30 from corresponding to the position of the seed outlet 11, thereby ensuring the uniformity of sowing; the extension and retraction of the baffle plate depends on the limit groove 12 and the bearing 43 located inside thereof, and the method of controlling the extension and retraction of the baffle plate is simple and reliable.

[0025] Example

[0026] See attached Figure 1-4 The utility model is a schematic diagram of the overall and partial structures of an embodiment of the utility model. The utility model specifically discloses a seed discharging mechanism installed on a seeder. The seed discharging structure includes:

[0027] The chassis 1 is a rectangular body with a hollow interior. The chassis 1 is horizontally fixed on the frame of the seeder. The inner contour of the cross section of the chassis 1 is circular. The upper side wall of the chassis 1 is provided with a rectangular seed inlet 10, which is connected to the interior of the chassis 1. The length direction of the seed inlet 10 is the same as the length direction of the chassis 1. The lower side wall of the chassis 1 is provided with a seed outlet 11. In this embodiment, the seed inlet 10 and the seed outlet 11 are directly opposite to each other in the upper and lower positions. The seed outlet 11 is connected to the sowing mechanism on the seeder, and the seeds dropped from the seed outlet 11 can be buried in the ground by the sowing mechanism on the seeder;

[0028] The seed box 2 is fixed above the chassis 1, the lower side wall of the seed box 2 is opened and connected to the seed inlet 10, the seed box 2 can contain seeds, and the seeds in the seed box 2 can enter the chassis 1 through the seed inlet 10;

[0029] A seeding wheel 3 is supported for horizontal rotation in the chassis 1, and the seeding wheel 3 is transmission-connected to the power output end of the seeder, that is, the seeding wheel 3 can rotate at a uniform speed during the movement of the seeder, and a plurality of seed grooves 30 are evenly opened circumferentially on the outer wall of the seeding wheel 3, and the seed inlet 10 and the seed outlet 11 can correspond to and be connected with the positions of the seed grooves 30; when the positions of the seed grooves 30 and the seed inlet 10 correspond, the seeds in the seed box 2 can fall into the seed grooves 30; when the positions of the seed grooves 30 containing seeds and the seed outlet 11 correspond, the seeds in the seed grooves 30 can fall into the sowing mechanism below;

[0030] The axis of the seed wheel 3 coincides with the axis of the inner contour of the chassis 1, and there is a gap between the outer wall of the seed wheel 3 and the inner wall of the chassis 1, and the gap is smaller than the minimum particle size of the seeds. This design ensures that the seeds in the seed box 2 will not enter the gap formed between the seed wheel 3 and the chassis 1, thereby avoiding seed leakage;

[0031] The seed blocking mechanism 4 includes a seed blocking plate 40, a connecting piece 41, a connecting shaft 42 and a bearing 43. The seeding wheel 3 is hollow inside and one end is open and the other end is closed. The inner wall of one end of the chassis 1 close to the open end of the seeding wheel 3 is provided with a limit groove 12 closed at both ends, that is, the center line of the limit groove 12 is a non-circular ring closed at both ends, and the limit groove 12 is located on the inner side of the open end of the seeding wheel 3;

[0032] A plurality of through holes 31 are evenly opened on the side wall of the seed wheel 3 in a circumferential direction, and the plurality of through holes 31 and the plurality of seed slots 30 are arranged alternately in sequence, and a seed blocking plate 40 is slidably inserted in each through hole 31, and the width direction of the seed blocking plate 40 is parallel to the axis of the seed wheel 3, and the seed slots 30 are located between the two long sides of the seed blocking plate 40, so that when the seed wheel 3 rotates, it is ensured that the seed blocking plate 40 adjacent to the seed slots 30 can reliably move the seeds;

[0033] A plurality of connecting members 41 and connecting shafts 42 are arranged on the inner side of the seed-discharging wheel 3, one end of the plurality of connecting members 41 is respectively fixed to one end of the plurality of seed-blocking plates 40, and the other ends of the plurality of connecting members 41 are respectively fixed to the plurality of connecting shafts 42; the axis line of the connecting shaft 42 is parallel to the axis line of the seed-discharging wheel 3, and each connecting shaft 42 is provided with a bearing 43, and the plurality of bearings 43 are all limited in the limiting groove 12, the groove cross-section of the limiting groove 12 is rectangular, the groove width of the limiting groove 12 is slightly larger than the outer diameter of the bearing 43, and the outer ring of the bearing 43 can roll and abut against the inner side wall of the limiting groove 12; when the seed-discharging wheel 3 rotates, it can drive the plurality of seed-blocking plates 40 to rotate, and the seed-blocking plates 40 are slidably inserted in the through hole 31, and the seed-blocking plates 40 are connected to the bearing 43, so the bearing 43 will also move in the limiting groove 12, and the shape of the limiting groove 12 will limit the bearing 43, thereby realizing the sliding of the seed-blocking plates 40 in the through hole 31;

[0034] During the rotation of the seed wheel 3, since the bearing 43 is limited in the limiting groove 12, the sliding of the baffle plate in the through hole 31 depends on the shape of the limiting groove 12; when the seed baffle plate 40 has not moved to the inner side of the seed inlet 10, one end of the seed baffle plate 40 away from the connecting piece 41 is limited to the inner side of the through hole 31, and when one or more seed baffle plates 40 rotate to the inner side of the seed inlet 10 with the seed wheel 3, the outer side wall of the seed wheel 3 is limited between the two ends of the seed baffle plate 40 located on the inner side of the seed inlet 10, that is, the end of the seed baffle plate 40 away from the connecting piece 41 will extend out of the through hole 31, thereby realizing the movement of the seeds inside the seed inlet 10;

[0035] The shortest distance between the end of the seed retaining plate 40 located on the inner side of the seed inlet 10 away from the connecting piece 41 and the outer side wall of the seed wheel 3 is greater than the maximum particle size of the seeds, that is, the seed retaining plate 40 can smoothly move the seeds on the inner side of the seed inlet 10; the seed groove 30 and the adjacent seed retaining plate 40 are moved out of the seed inlet 10 in sequence, that is, when the seed groove 30 containing seeds is moved out of the seed inlet 10, the seed retaining plate 40 located behind the seed groove 30 can move the seeds on the inner side of the seed inlet 10, thereby preventing the seeds in the seed groove 30 from being thrown out due to the fast rotation speed of the seed wheel 3, or preventing the seeds from being unable to reliably enter the seed groove 30.

[0036] The cross-sectional shape of the seed groove 30 is semicircular, and the maximum groove depth of the seed groove 30 is greater than the maximum particle size of the seeds. This design ensures that the seed groove 30 can contain enough seeds.

[0037] A rotating shaft 5 is coaxially fixed to the closed end of the seed wheel 3, and the rotating shaft 5 is rotatably connected to one end of the chassis 1. The end of the rotating shaft 5 away from the seed wheel 3 is located outside the chassis 1, and the end of the rotating shaft 5 away from the seed wheel 3 can be coaxially equipped with a sprocket, a pulley or a gear, that is, the rotating shaft 5 and the power output end of the seeder can be driven by a chain, a gear or a belt, which is specifically determined by the structural form of the power output end of the seeder. In this embodiment, a sprocket is coaxially fixed to the rotating shaft 5.

[0038] A plurality of bearings 43 are mounted on each connecting shaft 42 . This design can improve the stability of the seed retaining plate 40 when it slides relative to the through hole 31 .

[0039] The cross-sectional shape of the seed retaining plate 40 is adapted to the shape of the through hole 31. In the present embodiment, the cross-sectional shape of the seed retaining plate 40 is an isosceles triangle. When the seed wheel 3 rotates in a certain direction, the vertices in the cross-sectional shape of the seed retaining plate 40 will first enter the seed inlet 10. The cross-sectional shape of the seed retaining plate 40 is designed to increase the strength of the seed retaining plate 40 and prevent the seed retaining plate 40 from bending under stress. The gap between the outer wall of the seed retaining plate 40 and the hole wall of the through hole 31 is smaller than the minimum particle size of the seed, and the seed will not enter the above-mentioned gap.

[0040] In order to further improve the rotation stability of the seed wheel 3, the chassis 1 is provided with a limiting groove 12 at one end of the inner wall of the integrally formed an annular protrusion, the open end wall of the seed wheel 3 is provided with a groove, the annular protrusion is coaxially and slidably tightly embedded in the groove, and the annular protrusion can further realize rotation support for the seed wheel 3.

[0041] When the seed discharging mechanism is in operation:

[0042] Seeds are arranged in the seed box 2, and the seed wheel 3 rotates at a constant speed in a certain direction. When one or more seed slots 30 on the seed wheel 3 enter the inner side of the seed inlet 10, some seeds in the seed box 2 will fall into the seed slots 30. As the seed wheel 3 rotates, the seed retaining plate 40 located behind the seed slots 30 will extend from the through hole 31, thereby moving the seeds inside the seed inlet 10. When the seed wheel 3 rotates, the seeds in the seed slots 30 tend to be thrown out, and because the seed retaining plate 40 is designed, the seed retaining plate 40 can move the seeds in the seed inlet 10 in advance, ensuring that the seed slots 30 that are about to be removed from the seed inlet 10 are filled with seeds, avoiding the empty seed slots 30 from corresponding to the position of the seed outlet 11, and ensuring uniform sowing;

[0043] As the seed wheel 3 continues to rotate, the seed retaining plate 40 extending from the inner side of the seed inlet 10 will gradually retract into the through hole 31 to prevent the seed retaining plate 40 from colliding and interfering with the chassis 1 or the seed box 2 .

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seed discharging mechanism, installed on a seeder, characterized in that: include: A machine case (1), the machine case (1) being horizontally fixed on a frame of the seed drill, the inner contour of the cross section of the machine case (1) being circular, the upper side wall of the machine case (1) being provided with a rectangular seed inlet (10), the length direction of the seed inlet (10) being the same as the length direction of the machine case (1), and the lower side wall of the machine case (1) being provided with a seed outlet (11); A seed box (2), the seed box (2) being fixed above the machine box (1), the lower side wall of the seed box (2) being opened and connected to the seed inlet (10), and the interior of the seed box (2) being capable of containing seeds; A seeding wheel (3), the housing (1) supports the seeding wheel (3) in a horizontally rotatable manner, the seeding wheel (3) is drivingly connected to the power output end of the seeder, a plurality of seed grooves (30) are evenly arranged circumferentially on the outer wall of the seeding wheel (3), the seed inlet (10) and the seed outlet (11) can correspond to and communicate with the positions of the seed grooves (30); the axis of the seeding wheel (3) coincides with the axis of the inner contour of the housing (1), the outer wall of the seeding wheel (3) and the inner wall of the housing (1) have a gap, and the gap is smaller than the minimum particle size of the seeds; A seed blocking mechanism (4), the seed blocking mechanism (4) comprising a seed blocking plate (40), a connecting piece (41), a connecting shaft (42) and a bearing (43); the seed wheel (3) is hollow inside and one end is open and the other end is closed; an inner wall of one end of the chassis (1) close to the open end of the seed wheel (3) is provided with a limit groove (12) closed at both ends, the limit groove (12) is located on the inner side of the open end of the seed wheel (3); a plurality of through holes (31) are evenly opened in the circumferential direction on the side wall of the seed wheel (3); The through hole (31) and the plurality of seed slots (30) are arranged alternately in sequence, and a seed blocking plate (40) is slidably inserted in each of the through holes (31). The width direction of the seed blocking plate (40) is parallel to the axis of the seed wheel (3), and the seed slot (30) is located between the two long sides of the seed blocking plate (40); a plurality of connecting members (41) and the connecting shaft (42) are arranged on the inner side of the seed wheel (3), and one end of each of the plurality of connecting members (41) is connected to the plurality of seed blocking plates. One end of the connecting member (40) is fixed, and the other ends of the multiple connecting members (41) are respectively fixed to the multiple connecting shafts (42); the axis of the connecting shaft (42) is parallel to the axis of the seed wheel (3); each connecting shaft (42) is provided with a bearing (43); the multiple bearings (43) are limited in the limiting groove (12); the outer ring of the bearing (43) can roll and abut against the inner wall of the limiting groove (12); the seed retaining plate (40) is away from the connecting member (41) One end of the seed groove (30) can be limited inside the through hole (31), the outer wall of the seed wheel (3) is limited between the two ends of the seed blocking plate (40) located inside the seed inlet (10), the shortest distance between the end of the seed blocking plate (40) located inside the seed inlet (10) away from the connecting piece (41) and the outer wall of the seed wheel (3) is greater than the maximum particle size of the seeds, and the seed groove (30) and the seed blocking plate (40) adjacent thereto are moved out of the seed inlet (10) in sequence.

2. A seed discharging mechanism according to claim 1, characterized in that: The cross-sectional shape of the seed groove (30) is semicircular, and the maximum groove depth of the seed groove (30) is greater than the maximum particle size of the seed.

3. A seed discharging mechanism according to claim 1, characterized in that: A rotating shaft (5) is coaxially fixed to the closed end of the seeding wheel (3); the rotating shaft (5) is rotatably connected to one end of the chassis (1); one end of the rotating shaft (5) away from the seeding wheel (3) is located outside the chassis (1); and the rotating shaft (5) and the power output end of the seeder are connected by chain drive, gear drive or belt drive.

4. A seed discharging mechanism according to claim 1, characterized in that: Each of the connecting shafts (42) is sleeved with a plurality of bearings (43).

5. A seed discharging mechanism according to claim 1, characterized in that: The cross-sectional shape of the seed retaining plate (40) is adapted to the shape of the through hole (31), and the gap between the outer wall of the seed retaining plate (40) and the hole wall of the through hole (31) is smaller than the minimum particle size of the seeds.

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