Wheel type automatic rapeseed sowing mechanism

Abstract

This invention relates to an automatic rapeseed sowing mechanism with a pair of wheels. A bracket has several pairs of seed storage T-slots at its top along its length. A seed-distributing wheel and a pair of wheels are rotatably mounted within each of the two seed storage T-slots, allowing them to contact and rotate. Each seed-distributing wheel has several seed grooves along its circumference. Two guide plates are vertically mounted at the upper center between the two seed storage T-slots. The contact point between the seed-distributing wheel and the pair of wheels is located below these two guide plates. The two guide plates, the seed-distributing wheel, and the pair of wheels form a seed storage cavity. The seed grooves on the seed-distributing wheel can hold the seeds in the seed storage cavity. A seed hopper is located below the seed-distributing wheel. The design of the rotating and sliding pair of wheels contacting the seed-distributing wheel facilitates the recovery of remaining seeds and reduces frictional loss between the seed-distributing wheel and the contact point during rotation. Furthermore, the inclusion of a straightening wheel and a small brush I within the seed storage T-slots prevents missed or over-distribution of seeds and prevents seed damage. The structure is simple and reliable.

Description

Technical Field

[0001] This invention relates to the field of agricultural sowing technology, and specifically to an automatic sowing mechanism for wheeled rapeseed. Background Technology

[0002] Automatic rapeseed planters are a common piece of equipment in modern agriculture. Traditional rapeseed planting generally uses a rotating wheel with planting grooves, such as the Chinese utility model patent "Rapeseed Planter" (publication number CN201294739Y), which includes a traveling wheel, connecting shaft, drive wheel, transmission belt, driven wheel, planting shaft, seed box, fixed bracket, and push rod. The surface of the planting shaft has semi-circular recesses for seeding and dispensing evenly distributed in rows according to the row spacing. A seed box with an open top is installed close to the top of the planting shaft, and the lower part of the seed box has a slatted structure. Another example is the Chinese utility model patent "A Hand-Push Rapeseed Planter". A seeding machine (CN209914460U) includes a frame, a push handle at one end of the frame, an engine and a seeding box on the frame, a rotating shaft at the bottom of the frame, and wheels fixed at both ends of the rotating shaft with gripping teeth. The rotating shaft and the engine are connected by a belt drive mechanism. Several conveying pipes are connected to the bottom of the seeding box, and the conveying pipes are pierced by transmission rollers. The transmission rollers are detachable and replaceable, and have transmission grooves. A furrow opener is provided at the bottom of the conveying pipes. The transmission rollers and the rotating shaft are connected by a gear mechanism. A soil covering roller is provided on the frame. The aforementioned existing technologies suffer from problems such as easy wear of the sowing shaft notch, easy damage to seeds by the sluice gate at the bottom of the seed box, missed sowing, and difficulty in recovering remaining seeds in the seed bin. With the development of modern agriculture, a sowing mechanism has gradually emerged that uses control valves for packaging and adjustment, such as the Chinese utility model patent "A Vegetable Seed Sowing Machine", publication number CN208128835U. It includes a machine body, a first bolt, and a second bolt. The top of the machine body is provided with a storage trough, and a feed inlet is provided on one side of the top of the storage trough. The bottom of the storage trough is provided with multiple sets of discharge ports, and a control valve is provided on one side of each discharge port. A conveying pipe is provided at the bottom of the discharge port, and a connecting plate is provided on the outer side of the control valve at the bottom of the conveying pipe. The top of the connecting plate is provided with fourth threaded holes on both sides. The bottom of the conveying pipe is provided with multiple sets of sowing ports, and a first fixing frame is installed at the bottom of both sides of the storage trough. This invention allows for control of the sowing speed through the setting of a control valve. The spacing between the sowing and furrowing can be adjusted through the cooperation of multiple sets of threaded holes and bolts, which is beneficial for the planting of different types of vegetables. The furrow opener and the seeder can work simultaneously. Although it uses an electrically controlled control valve instead of a traditional mechanical sowing shaft, the number of seeds passing through the control valve is not easy to control, which can easily lead to over-sowing. Therefore, the structure of a sowing wheel and sowing shaft is still more commonly used in the field. Summary of the Invention

[0003] To address the above problems, the present invention provides a mechanism that employs a detachable pair of wheels to achieve precise automatic sowing of single rapeseed seeds.

[0004] The specific technical solution of the present invention is as follows: an automatic rapeseed sowing mechanism with a pair of wheels, including a support frame. Several pairs of seed storage T-groove plates are provided on the top of the support frame along its length. Seed-distributing wheels and opposing wheels are rotatably arranged in the two seed storage T-groove plates. The seed-distributing wheels and opposing wheels can rotate in contact. Several seed grooves are opened on the seed-distributing wheels along their circumference. Two guide plates are vertically arranged in the upper center between the two seed storage T-groove plates. The contact point between the seed-distributing wheels and opposing wheels is located below the two guide plates. The seed storage cavity is formed by the two guide plates, the seed-distributing wheels and opposing wheels. The seed grooves on the seed-distributing wheels can hold the seeds in the seed storage cavity. A seed hopper is provided below the seed-distributing wheels.

[0005] Furthermore, preferably, the seed storage T-trough plate is provided with a recycling channel directly below the seed storage cavity.

[0006] Furthermore, preferably, the seed storage T-groove plate has an arc-shaped opening on one of its short sides, and the seed distribution wheel can cooperate with the arc-shaped opening.

[0007] Furthermore, preferably, a straightening wheel is also provided between the two seed storage T-grooves above the seed distribution wheel.

[0008] Furthermore, preferably, the sides of the straightening wheel are respectively provided with a small brush I, a scraper, and a small brush II for removing excess particles.

[0009] Furthermore, preferably, the plurality of pairs of seed storage T-slot plates are connected by connecting rods.

[0010] Furthermore, preferably, the seed-laying wheel has a boss along its circumference, the seed groove is on top, and the corresponding pair of wheels has a groove along its circumference.

[0011] Furthermore, preferably, the seed-laying wheel is mounted on the driven shaft, and the driven shaft drives the axle of the straightening wheel to rotate through a gear set.

[0012] Furthermore, preferably, it also includes a lead screw mechanism, with the rotating shaft of the pair of wheels connected to the lead screw mechanism via a connecting frame, the lead screw mechanism being able to drive the pair of wheels away from or towards the seeding wheel.

[0013] Furthermore, preferably, it also includes a recycling hopper, with the recycling hopper located on one side of the seed hopper facing the seed storage cavity.

[0014] The beneficial effects of this invention are: the design of a rotating and sliding contact wheel with the seed distribution wheel not only facilitates the recycling of remaining seeds, but also reduces the frictional loss between the seed distribution wheel and the contact sealing point when rotating. At the same time, the seed storage T-trough plate is equipped with a straightening wheel and a small brush I, which prevents missed sowing and over-sowing, and the seeds are not damaged. The structure is simple and reliable. Attached Figure Description

[0015] Figure 1 This is a front view of the automatic rapeseed sowing mechanism of the present invention, in which the support is partially sectionally viewed to show the seed hopper and other structures, and only the right side structure of the support is shown, while the left side structure is symmetrically arranged with the right side structure. Figure 2 This is a top view of the automatic rapeseed sowing mechanism of the present invention. Figure 1 The rightmost seed distribution wheel, seed rollers, and seed hopper have been removed from the driven shaft, leaving only the seed storage T-trough plate; the middle one has had its seed storage T-trough plate and seed hopper removed, leaving only the seed distribution wheel and seed rollers. Figure 3 This is a top view of the automatic rapeseed sowing mechanism of the present invention. Figure 2 The seed storage T-trough plate, driven shaft, seed distribution wheel, and coupling wheel have been removed. Only the drive sprocket on the lower drive shaft and its connection with the driven sprocket on the driven shaft are shown. Figure 4 for Figure 3 AA section view in the middle; Figure 5 Diagram showing the fit between the seed reel and the seeding reel; Figure 6 This is a component drawing of a seed storage T-trough plate, where the left side is a side view of the component and the right side is a front view of the component; Figure 7 This is a cross-sectional view of bearing housing II installed in the driven shaft mounting beam.

[0016] In the diagram: 1-bracket, 101-driven shaft mounting beam, 102-transmission seat, 103-hopper mounting beam; 2-Seed storage T-trough plate, 201-Recovery channel, 202-Arc-shaped opening, 203-Straightening wheel, 204-Small brush I, 205-Scraper blade, 206-Small brush II, 207-Guide strip plate, 208-Recovery port, 209-Connecting rod, 210-Brush; 3-Seed wheel, 301-Boss, 302-Seed trough; 4-Ring wheel, 401-Groove, 402-Ring wheel shaft; 501 - Seeding hopper, 502 - Seeding tube, 503 - Recovering hopper, 504 - Recovering tube, 505 - Seed delivery tube; 6-Screw mechanism, 601-Connecting frame, 701 - Driving shaft, 702 - Driven shaft 8-Gear set, 901-Driving sprocket, 902-Driven sprocket, 903-Chain; 10-Bearing housing I, 11-Bearing housing II, 100-Power source. Implementation

[0017] To make the technical problems and solutions solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0018] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] like Figures 1-4 As shown, a wheel-type automatic rapeseed sowing mechanism includes a support 1. The support 1 is welded from stainless steel square tubing and has a square frame structure. Several pairs of seed storage T-grooves 2 are arranged on the top of the support 1 along its length. In this embodiment, three sets of seed storage T-grooves 2 are arranged on the left and right sides respectively. Only the three sets of seed storage T-grooves 2 on the right side are shown in the figure. Each set of seed storage T-grooves 2 consists of two seed storage T-grooves 2. Figure 1 and Figure 6 As shown.

[0021] Two seed storage T-slot plates 2 are rotatably equipped with seed-distributing wheels 3 and paired wheels 4, meaning that each set of seed storage T-slot plates 2 contains one seed wheel 3 and one paired wheel 4. The seed-distributing wheels 3 and paired wheels 4 can rotate in contact. Several seed grooves 302 are cut along the circumference of the seed-distributing wheels 3. Two guide plates 207 are vertically arranged at the upper center of the two seed storage T-slot plates 2. The contact point between the seed-distributing wheels 3 and paired wheels 4 is located below the two guide plates 207. The seed storage cavity is formed by the two guide plates 207, the seed-distributing wheels 3 and paired wheels 4. The contact point, or closing point, between the self-rotating paired wheels 4 and the seed-distributing wheels 3 is not easily worn because the wheel design changes the planar friction to rotational friction. The seed grooves 302 on the seed-distributing wheels 3 can hold the seeds in the seed storage cavity.

[0022] like Figure 4 and Figure 6 As shown, an arc-shaped opening 202 is opened on one side of the short side of the seed storage T-groove plate 2. The seed distribution wheel 3 can cooperate with the arc-shaped opening 202, thereby extending into the seed storage cavity below the two seed storage T-groove plates 2. A recovery hopper 503 is set on one side of the seed hopper 501 facing the seed storage cavity. A recovery channel 201 is set on the two seed storage T-groove plates 2 facing the seed storage cavity below. The lower end of the recovery channel 201 extends into the recovery hopper 503. The lower end outlet of the recovery hopper 503 is connected to a recovery pipe 504 for recovering excess seeds. After multiple recovery pipes 504 can be connected, seeds are finally sent out from one pipe opening. A recovery bag is installed at the pipe opening. A brush 210 is also set on the recovery channel 201 facing the arc-shaped opening 202 to prevent seeds from sticking to the seeds in the seed groove 302 of the seed distribution wheel 3.

[0023] Below the seeding wheel 3, a seeding hopper 501 is installed. The seeding hopper 501 is a sloping hopper with an open top. Each seeding hopper 501 is connected to a seeding pipe 502 at its bottom. The ends of the seeding hoppers 501 are welded to the outer wall of the recovery hopper 503, which is connected to the support 1 via the seeding hopper mounting beam 103. To ensure uniform seeding, a baffle that can be opened and closed at intervals or an automatic valve can be added to the opening of the seeding pipe 502. For example, the seeding pipe 502 can be divided into two sections with a vertical stepped design, and a baffle can be added to the lower end of the first seeding pipe 502. The baffle is mounted on the rotating shaft. The rotation of the rotating shaft drives the baffle to open or close. Both ends of the rotating shaft are rotatably mounted on the bracket 1, that is, rotatably mounted on the bracket 1 through bearing seats. Both ends of the rotating shaft are equipped with torsion springs that keep the baffle in a closed state. That is, the torsion springs are fitted on the rotating shaft 505, with one end fixed to the rotating shaft and the other end fixed to the bracket 1. The baffle is kept in a closed state by the rebound force of the torsion springs. The opening and closing of the baffle is achieved by intermittent pressing. Of course, a stepper motor or servo motor can also be directly connected to the rotating shaft, eliminating the torsion spring design, and the opening and closing of the baffle can be achieved by PLC electrical control.

[0024] The seed-laying wheel 3 is mounted on the driven shaft 702, which is rotatably mounted in the bearing housing I10. The bearing housing I10 is mounted on the driven shaft mounting beam 101 located in the middle of the bracket 1. One end of the driven shaft 702 extends into the transmission seat 102 and connects with the gear. The gear set 8 (3 gears) in the transmission seat 102 rotates through gear meshing, driving the axle of the straightening wheel 203, which extends into the transmission seat 102 and is connected to the uppermost gear, to rotate. At this time, the direction of rotation of the straightening wheel 203 is the same as that of the seed-laying wheel 3 (caused by the transmission of 3 gears, which is common mechanical knowledge).

[0025] Above the seed-laying wheel 3, between the two seed storage T-trough plates 2, a straightening wheel 203 is also provided. On both sides of the straightening wheel 203, there are small brushes I 204, scrapers 205 and small brushes II 206 for removing excess seeds. On the seed storage T-trough plate 2 away from the seed storage cavity, there are recycling ports 208 corresponding to scrapers 205 and small brushes II 206. A seed conveying pipe 508 is connected to the recycling port 208. Excess seeds are scraped and swept into the recycling port 208 by scrapers 205 and small brushes II 206, and then enter the recycling hopper 503 through the seed conveying pipe 508 and thus enter the recycling bag.

[0026] like Figure 1 and Figure 4 As shown, the three pairs of seed storage T-trough plates 2 are connected by connecting rods 209 to form an integral structure. Of course, an independent structure can also be adopted, that is, each pair of seed storage T-trough plates 2 forms a separate structure, all of which are within the scope of the technical solution of the present invention.

[0027] like Figure 5 As shown, the seed-laying wheel 3 has a boss 301 along its circumference, and the seed groove 302 is opened on it. Correspondingly, the paired wheel 4 has a groove 401 along its circumference. Of course, a concave-convex structure is used in this embodiment, but other similar concave-convex structures, such as V-shaped and U-shaped structures, are equivalent to this embodiment.

[0028] The rotating shaft 402 is rotatably inserted into the bearing housing II11, and the bearing housing II11 is slidably mounted on the driven shaft mounting beam 101, such as... Figure 2 and Figure 7 As shown, the moving shaft mounting beam 101 adopts a square tube structure. A slot is opened on the top surface of the moving shaft mounting beam 101. A slider is installed in the central cavity of the moving shaft mounting beam 101. The bearing seat II 11 is installed on the slider. The upper part of the bearing seat II 11 extends out from the top slot. The bearing seat II 11 can slide back and forth along the slot.

[0029] It also includes a screw mechanism 6. The screw mechanism 6 is provided on the side of the bracket 1 away from the seeding wheel 3. The screw mechanism 6 includes a threaded seat on the bracket 1 and a rotating screw threaded on the threaded seat. One end of the screw is rotatably connected to the connecting frame 601, and the other end is equipped with a rotating handle. This structure is a commonly used design, such as in a vise. The rotating shaft 402 of the coupling wheel is connected to the screw mechanism 6 through the connecting frame 601. By rotating the screw mechanism 6, the coupling wheel 4 can be moved away from or closer to the seeding wheel 3.

[0030] like Figures 1-4 As shown, rotating the screw mechanism 6 causes the driven wheel 4 to approach the seed distribution wheel 3 and enter between the two seed storage T-groove plates 2, thereby forming a seed storage cavity with the two guide plates 207, the seed distribution wheel 3, and the driven wheel 4. Seeds are added through the multi-pipe feeding pipe. After a certain number of seeds are stored in the seed storage cavity, the power source 100 is started. The power source 100 drives the drive shaft 701 located on the lower side of the support 1 to rotate. The drive sprocket 901 on the drive shaft 701 drives the driven sprocket 902 located on the driven shaft 702 to rotate through the chain 903. The seed distribution wheel 3 then rotates outward, and at this time, a single seed enters the seed trough 302. It should be noted that the seed trough 302... The size should be designed to accommodate only a single seed, which is common knowledge in the field (such as the transmission groove mentioned in the background art). By blocking and straightening the small wheel 203, small brush I 204, scraper 205 and small brush II 206, excess seeds are removed. With the rotation of the seed distribution wheel 3, the seeds enter the seed hopper 501 in sequence and enter the opening below through the seed tube 502. After sowing is completed, the screw mechanism 6 is rotated again to move the moving wheel 4 away from the seed distribution wheel 3. At this time, the remaining seeds in the seed storage cavity will enter the recycling bag through the recycling channel 201, recycling hopper 503, etc., to facilitate the recycling of unused seeds.

[0031] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wheel-type automatic rapeseed sowing mechanism, characterized in that, The system includes a support (1), which has several pairs of seed storage T-slot plates (2) at the top along its length. Seed-distributing wheels (3) and paired wheels (4) are rotatably disposed in the two seed storage T-slot plates (2). Seed-distributing wheels (3) and paired wheels (4) can rotate in contact. Seed-distributing wheels (3) have several seed grooves (302) along their circumference. Two guide plates (207) are vertically disposed at the top center between the two seed storage T-slot plates (2). The contact point between seed-distributing wheels (3) and paired wheels (4) is located below the two guide plates (207). The seed storage cavity is formed by the two guide plates (207), seed-distributing wheels (3), and paired wheels (4). Seed grooves (302) on seed-distributing wheels (3) can carry the seeds in the seed storage cavity. Seed hoppers (501) are disposed below seed-distributing wheels (3). The seed storage T-trough plate (2) is provided with a recycling channel (201) directly below the seed storage cavity. The seed storage T-groove plate (2) has an arc-shaped opening (202) on one side of its short side, and the seed distribution wheel (3) can cooperate with the arc-shaped opening (202); A straightening wheel (203) is also installed between the two seed storage T-trough plates (2) above the seed-laying wheel (3); It also includes a lead screw mechanism (6), and the wheel shaft (402) is connected to the lead screw mechanism (6) through a connecting frame (601). The lead screw mechanism (6) can drive the wheel (4) away from or close to the seeding wheel (3). A brush (210) is also provided on the recycling channel (201) facing the arc-shaped opening (202) to prevent the seeds from sticking to the seed groove (302) of the seed roller (3).

2. The automatic rapeseed sowing mechanism based on a wheel as described in claim 1, characterized in that, The straightening wheel (203) is equipped with a small brush I (204), a scraper (205), and a small brush II (206) on both sides for removing excess seeds.

3. The automatic rapeseed sowing mechanism based on a wheel as described in claim 1, characterized in that, The several pairs of seed storage T-slot plates (2) are connected by connecting rods (209).

4. The automatic rapeseed sowing mechanism based on a wheel as described in claim 1, characterized in that, The seed-laying wheel (3) has a boss (301) along its circumference, and the seed groove (302) is opened on the boss (301). The corresponding pair of wheels (4) has a groove (401) along its circumference.

5. The automatic rapeseed sowing mechanism based on a wheel as described in claim 1, characterized in that, The seeding wheel (3) is mounted on the driven shaft (702), and the driven shaft (702) drives the axle of the straightening wheel (203) to rotate through the gear set (8).

6. The automatic rapeseed sowing mechanism of a wheel type according to claim 1, characterized in that, It also includes a recycling hopper (503), which is provided on one side of the seed hopper (501) facing the seed storage cavity.

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