A low-damage peanut seed metering device capable of achieving hole distance precision control

Abstract

The application provides a low-damage peanut seed sowing device with controllable hole distance and precision, which is installed on a seeding machine and comprises a main seed sowing device, an auxiliary seed sowing device, a connecting plate, a seed monitoring device and a power device. The auxiliary seed sowing device is fixedly connected with the main seed sowing device and is located below the main seed sowing device, and is used for receiving and downwardly conveying the seeds arranged and conveyed by the main seed sowing device. The seed monitoring device is connected with the auxiliary seed sowing device. The scheme can accurately control the seed sowing process, and the main seed sowing device and the auxiliary seed sowing device are used for limiting the seeds in succession in the seed sowing process, so that the problems of easy damage of peanut seeds and difficult guarantee of hole distance are solved.

Description

Technical Field

[0001] The invention relates to the technical field of peanut sowing, in particular to a precision seeding device suitable for peanuts. Background Art

[0002] Currently, peanut sowing in major peanut-producing areas is typically performed using a seeder. Depending on their structural type, the seeding mechanism used in peanut seeders can be categorized into two types: internal-filling hole-wheel and socket-wheel. Both rely on gravity to fill the seed chamber, requiring sufficient seed to be stored in the seed chamber during operation. Furthermore, since peanuts are dicots with larger cotyledons, the binding force between the two cotyledons is relatively weak compared to seeds like soybeans. Excessive seed accumulation in the seed chamber, combined with the agitation of the seeding wheel, can cause the seeds to rub against each other, leading to peeling and breakage, which can affect germination. Furthermore, since the seeding mechanism is typically installed at a certain height above the ground, a seed delivery tube is required between the seeder and the ground. At high operating speeds (greater than 5 km / h), the vibration of the machine can cause the peanut seeds to collide with the inner wall of the seed delivery tube as they fall from the seeder to the ground. This can lead to inconsistent seeding times, thus affecting the spacing between seed holes. At the same time, when the peanut seeds fall from the seed meter, if the seed meter is too high from the ground, the peanuts are likely to bounce after falling to the ground, affecting the sowing hole spacing. Summary of the Invention

[0003] The purpose of the present invention is to provide a low-breakage peanut seed metering device that can achieve precise and controllable hole spacing, so as to solve the problems of easy breakage of peanut seeds and difficulty in ensuring the sowing hole spacing.

[0004] The object of the present invention is achieved as follows: a low-breakage peanut seeding device that can achieve precise and controllable hole spacing is installed as a whole on a seeder, and includes a main seeding device, an auxiliary seeding device, a connecting plate, a seed monitoring device, and a power device;

[0005] The auxiliary seeding device is located below the main seeding device and is fixedly connected to the main seeding device through a connecting plate, and is used to receive and transport downward the seeds sorted and transported by the main seeding device. The seed monitoring device is connected to the auxiliary seeding device.

[0006] The main seeding device comprises:

[0007] A seed chamber housing has an upper seed inlet on its upper side that communicates with its inner cavity, and its inner cavity is configured as a seed chamber for accommodating a plurality of seeds;

[0008] A partition plate fixed within the seed chamber housing divides the seed chamber into a first chamber and a second chamber. The first chamber and the second chamber are arranged in a direction in which the seeds roll. The bottom wall of the seed chamber is an inclined surface to guide the seeds to roll from the first chamber to the second chamber. A gap is left between the bottom edge of the partition plate and the bottom wall of the seed chamber to accommodate the passage of seeds.

[0009] A seed baffle, said baffle being adjustably connected to the seed chamber housing and used to adjust the size of the gap between the bottom edge of the partition plate and the bottom wall of the seed chamber;

[0010] A seed taking mechanism located in the second seeding room;

[0011] Wherein, the seed taking mechanism includes:

[0012] A seed protection shell, which is in the shape of a circular shell as a whole and is fixedly connected to the seed chamber shell. The portion of the seed protection shell located in the second seed chamber is configured as an open structure, and an upper seed discharge port is provided on the lower side of the seed protection shell for feeding seeds to the auxiliary seed feeding device;

[0013] The disc-shaped seed cup mounting disc is rotatably connected to the seed protection shell in an up-and-down manner. The seed cup mounting disc is fixedly connected to two groups of seed cups. A single seed cup has a positioning groove for accommodating a single seed, with the opening facing upward when the seed is taken. The two groups of seed cups are located at two axial end surfaces of the seed cup mounting disc. The number of seed cups in each group is several and is evenly distributed along the circumference of the outer circular edge of the axial end surface of the seed cup mounting disc. The seed cups of the two groups are directly opposite to each other in the axial direction of the seed cup mounting disc.

[0014] Among them, the seed cup mounting disc is connected to the power device in a transmission manner, and rotates in the seed protection shell under the drive of the power device, so that the seed cup can hold and position the seeds in the second seed chamber, and bring the seeds to the upper seed opening position as the seed cup mounting disc rotates.

[0015] Furthermore, the seed cup is detachably fixedly connected to the seed cup mounting disc, and the positioning groove of the seed cup is divided into optional seed positioning groove one and seed positioning groove two. The internal space dimensions of the seed positioning groove one and the seed positioning groove two respectively match the sizes of small seeds and large seeds, and the seed positioning groove one and the seed positioning groove two are used to position small seeds and large seeds respectively.

[0016] Furthermore, when viewed from the end face of the seed cup mounting disc shaft, the positioning groove of the seed cup is V-shaped with the opening facing upward; the bottom of the positioning groove of the seed cup is arranged at an angle, with the outer side higher and the inner side lower, so that the seeds can roll in and be positioned therein.

[0017] Furthermore, an annular cavity is formed in the seed protection shell, which is connected to the second seed chamber and accommodates two groups of seed cups. The annular cavity extends in a circular shape based on the central axis of the seed cup mounting disc, and the upper seed discharge port is connected to the annular cavity.

[0018] Furthermore, the auxiliary seeding device includes:

[0019] The lower shell is fixedly connected to the seed protection shell through a connecting plate. The lower shell has a lower seed inlet and a lower seed discharge port on the upper and lower sides respectively. The lower seed inlet is located directly below the upper seed discharge port.

[0020] The conveying mechanism includes a driving pulley, a passive pulley and a conveyor belt, wherein the driving pulley and the passive pulley are rotatably connected to the lower housing, the driving pulley is transmission-connected to the power device, and the conveyor belt is fitted with the driving pulley and the passive pulley and is movably disposed within the lower housing;

[0021] Among them, the belt surface of the conveyor belt is integrally fixed with a number of limiting plates evenly distributed along the length of the belt, the limiting plates are perpendicular to the belt surface of the conveyor belt, and the gap between two adjacent limiting plates is used to accommodate two seeds discharged from the upper seed discharge port. The two edges of the conveyor belt are close to the inner wall of the lower shell body, and the edges of the limiting plates are close to the inner wall of the lower shell body.

[0022] Furthermore, the seed monitoring device is installed on the lower shell, and its monitoring end is facing the position of the conveyor belt.

[0023] Furthermore, the power device includes a driving shaft, a driving sprocket, a transmission chain, a driven shaft and a driven sprocket. The driving shaft is connected to the power source, the driving shaft is coaxially fixedly plugged into the seed cup mounting disc, the driving sprocket is fixedly sleeved on the driving shaft, the driven shaft is coaxially fixedly plugged into the driving pulley, and coaxially sleeved on the driven sprocket, and the transmission chain is fitted with the driving sprocket and the driven sprocket.

[0024] Furthermore, the starting position of the lower seed discharge port of the lower shell forms an angle of 55° to 65° with the horizontal line, and the ending position forms an angle of 95° to 100° with the horizontal line;

[0025] The starting position of the lower seed inlet forms an angle of 105° to 110° with the horizontal line, and the ending position of the lower seed inlet forms an angle of 70° to 75° with the horizontal line.

[0026] Furthermore, the starting position of the upper seed opening of the seed protection shell forms an angle of 55° to 65° with the horizontal line, and the ending position forms an angle of 95° to 100° with the horizontal line.

[0027] The beneficial effects of the present invention are:

[0028] 1. The seeding process can be precisely controlled. During the seeding process, the main seeding device and the auxiliary seeding device are used to limit the seeds in sequence (front and back limit and left and right limit), which solves the problems of easy damage of peanut seeds and difficulty in ensuring the sowing hole distance;

[0029] 2. The seed monitoring device can be used to detect the seeding process, and the double seed rate, seeding amount and other operation quality can be tested;

[0030] 3. A seed cup is provided in the main seeding device. Combined with the rotation of the seed cup mounting disc, the peanut seeds are positioned while being prevented from colliding or rubbing against other components during transportation. In addition, an auxiliary seed dropping device is used to limit the position of the peanut seeds, lowering the height of the peanut seeding device from the ground to prevent the seeds from falling to the ground. The auxiliary seed dropping device is equivalent to replacing the seed drop tube in the prior art (a pipe for allowing the seeds discharged from the seeding device outlet to fall to the ground), eliminating the phenomenon of seeds colliding and bouncing in the seed tube, ensuring that the two seeds discharged each time fall to the ground at the same time, thereby ensuring the hole distance and improving the sowing quality.

[0031] 4. The seed baffle can be used to adjust the seed stacking height in the second chamber to prevent the seeds from being squeezed and damaged due to excessive stacking, and to prevent the seeds from being unable to be taken out of the seed cup due to excessive stacking height. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the general assembly of the present invention.

[0033] Figure 2 It is a schematic diagram of the main seed discharge device.

[0034] Figure 3 This is a schematic diagram of the location of the upper seed port.

[0035] Figure 4 It is a schematic diagram of the positions of the seed retaining plate and the partition plate.

[0036] Figure 5 It is a schematic diagram of the position of the seed cup and the seed cup mounting disc.

[0037] Figure 6 It is a three-dimensional picture of the seed cup.

[0038] Figure 7 It is a schematic cross-sectional view of the seed cup.

[0039] Figure 8 It is a schematic diagram of the distribution of seed cups on the seed cup mounting disc.

[0040] Figure 9 It is a structural diagram of the seed protection shell and its limiting groove.

[0041] Figure 10It is a structural diagram of the cleaning board.

[0042] Figure 11 It is a schematic diagram of the power unit.

[0043] Figure 12 It is a structural diagram of the connecting plate.

[0044] Figure 13 It is a schematic diagram of the auxiliary seeding device.

[0045] Figure 14 This is a schematic diagram of the location of the lower seed inlet.

[0046] Figure 15 This is a schematic diagram of the location of the lower row seed port.

[0047] Figure 16 It is a schematic diagram of the structure of a conveyor belt.

[0048] Figure 17 It is a schematic diagram of another structural form of the conveyor belt. DETAILED DESCRIPTION

[0049] The following is a combination of the embodiments of the present invention Figure 1-17 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0050] like Figure 1 As shown, a low-damage peanut seeding device that can achieve precise and controllable hole spacing is integrally mounted on a seeder and includes a main seeding device 1, an auxiliary seeding device 2, a connecting plate 3, a seed monitoring device 4, and a power device 5. Currently, peanut sowing operations are performed using a one-hole, two-seed sowing method.

[0051] The auxiliary seeding device 2 is located below the main seeding device 1 and is fixedly connected to the main seeding device 1 through a connecting plate 3. It is used to receive and transport downward the seeds sorted and transported by the main seeding device 1. The seed monitoring device 4 is connected to the auxiliary seeding device 2.

[0052] like Figure 2-9 As shown, the main seed-discharging device 1 includes:

[0053] The seed chamber housing 102 is fixedly connected to the seeder and has an upper seed inlet 101 on its upper side that communicates with its inner cavity, and its inner cavity is configured as a seed chamber for accommodating a plurality of seeds;

[0054] The partition plate 103 is fixed inside the seed chamber shell 102, and the partition plate 103 divides the seed chamber into a first chamber 102a and a second chamber 102b. The partition plate 103 is divided into a first oblique portion and a second oblique portion, the first oblique portion is inclined downward relative to the edge of the upper seed inlet 101, and the second oblique portion is inclined downward relative to the first oblique portion, the slope of the first oblique portion is smaller than the second oblique portion, the upper side of the first oblique portion is connected to the edge of the upper seed inlet 101, and the upper side of the second oblique portion is connected to the lower side of the first oblique portion, the first chamber 102a and the second chamber 102b are distributed according to the direction in which the seeds roll, and the bottom wall of the seed chamber is an inclined surface to guide the seeds to roll from the first chamber 102a to the second chamber 102b, and a gap is left between the bottom edge of the partition plate 103 and the bottom wall of the seed chamber to accommodate the passage of seeds, that is, a gap is left between the lower side of the second oblique portion of the partition plate 103 and the bottom wall of the seed chamber to accommodate the flow of seeds, so as to regulate the seed stacking height in the second chamber 102b;

[0055] The seed retaining plate 104 is adjustably connected to the seed chamber housing 102 and is used to adjust the gap between the bottom edge of the partition plate 103 and the bottom wall of the seed chamber. The seed retaining plate 104 is attached to the back of the second oblique portion of the partition plate 103. A stud is passed through the seed retaining plate 104 and the seed chamber housing 102, and a butterfly nut is used to fit the stud to fix the position of the seed retaining plate 104;

[0056] A seed taking mechanism is provided at the second seed chamber 102b.

[0057] The above-mentioned seed collection institutions include:

[0058] The seed protection shell 107 is a round shell as a whole. The seed protection shell 107 is fixedly connected to the seed chamber shell 102. The portion of the seed protection shell 107 in the second seed chamber 102b is set as an open structure. The lower side of the seed protection shell 107 is provided with an upper seed discharge port 108 for feeding seeds to the auxiliary seed feeding device 2. The width of the upper seed discharge port 108 is 60mm, so as to facilitate the smooth discharge of peanut seeds.

[0059] The disc-shaped seed-taking cup mounting disc 106 is movably connected to the seed protection shell 107 for rotating up and down. The seed-taking cup mounting disc 106 is fixedly connected to two groups of seed-taking cups 105. A single seed-taking cup 105 has a positioning groove for accommodating a single seed, with the opening facing upward when taking seeds. The two groups of seed-taking cups 105 are symmetrically distributed on the two axial end faces of the seed-taking cup mounting disc 106. The number of seed-taking cups 105 in each group is several and is evenly distributed along the circumferential outer edge of the axial end face of the seed-taking cup mounting disc 106. The two groups of seed-taking cups 105 are directly opposite to each other in the axial direction of the seed-taking cup mounting disc 106.

[0060] In addition, the seed cup mounting disc 106 is connected to the power device 5 in a transmission manner, and rotates in the seed protection shell 107 under the drive of the power device 5. The seed cup mounting disc 106 rotates from the second seed chamber 102b to the position of the upper seed discharge port 108, so that the seed cup 105 supports and positions the seeds in the second seed chamber 102b, and brings the seeds to the position of the upper seed discharge port 108 as the seed cup mounting disc 106 rotates.

[0061] Peanut seeds enter the seed chamber through the upper seed inlet 101. To prevent an excessive number of peanut seeds from being drawn into the seed cup 105 and to prevent excessive seed accumulation within the seed chamber from causing damage due to mutual squeezing and friction, a partition 103 is provided within the seed chamber to separate the seed chamber into a first seed chamber 102a and a second seed chamber 102b. A vertically adjustable seed retaining plate 104 is provided on the partition 103. This retaining plate 104 acts like a valve, controlling the amount of seeds that fall from the first seed chamber 102a to the second seed chamber 102b and adjusting the seed accumulation height within the second seed chamber 102b. This prevents excessive seed accumulation from causing damage due to mutual squeezing, as well as damage due to agitation by the seed cup mounting disc 106 and the seed cup 105. It also prevents excessive seed accumulation from causing the seed cup 105 to be unable to retrieve seeds.

[0062] And, as Figure 3 、 10 As shown, an opening is provided in the bottom wall of the seed chamber, and a cleaning plate 109 is detachably mounted at this opening. Several strip-shaped holes 109a are formed in the cleaning plate 109, with a width of 1 / 4 to 1 / 3 the seed thickness b. This facilitates the discharge of debris mixed with the seeds within the seed chamber. During sowing, the cleaning plate 109 seals the opening in the bottom wall of the seed chamber, allowing only debris to be discharged through the strip-shaped holes 109a. After sowing, to remove excess seeds, the cleaning plate 109 is pulled out, opening the opening in the bottom wall of the seed chamber and allowing the excess seeds to be discharged.

[0063] As a preferred embodiment, the seed cup 105 is detachably fixedly connected to the seed cup mounting disc 106. Figure 7 As shown, the positioning groove of the seed cup 105 is divided into optional seed positioning groove 1 105a and seed positioning groove 2 105b. The internal space dimensions of seed positioning groove 1 105a and seed positioning groove 2 105b match the sizes of small seeds and large seeds respectively. Seed positioning groove 1 105a and seed positioning groove 2 105b are used to position small seeds and large seeds respectively.

[0064] Combine Figure 6 、 7As shown, the seed cup 105 is provided with a countersunk positioning hole 105c which passes through the axial direction of the seed cup mounting disc 106. The countersunk positioning hole 105c is located between the seed positioning groove 105a and the seed positioning groove 2 105b. Corresponding positioning holes are provided on the seed cup mounting disc 106, and bolts are passed through the countersunk positioning holes 105c, so that the seed cup 105 can be detachably fixed on the axial end face of the seed cup mounting disc 106.

[0065] In order to adapt to the needs of transporting peanut seeds of different sizes, the seed cup 105 is designed to have interchangeable upper and lower installation positions. Positioning grooves of different sizes are set on the seed cup 105, namely seed positioning groove 105a and seed positioning groove 2 105b. Seed positioning groove 105a and seed positioning groove 2 105b are used to position and accommodate small seeds and large seeds respectively.

[0066] Combine Figure 6 、 7 As shown, when viewed from the axial end face of the seed cup mounting disc 106, the positioning groove of the seed cup 105 is V-shaped with the opening facing upward, thereby limiting the seeds in the radial direction; the bottom of the positioning groove of the seed cup 105 is arranged at an angle, with the outer side higher and the inner side lower, so that the seeds can roll in and be positioned therein, thereby limiting the seeds in the axial direction.

[0067] like Figure 7 As shown, when observed from the axial end face of the seed cup mounting disc 106, the opening angle of the seed positioning groove 2 105b is 103°, and the opening angle of the seed positioning groove 1 105a is 92°; and the outer sides of the two positioning grooves are high and the inner sides are low, that is, the inner side close to the seed cup mounting disc 106 is lower, and the bottom of the positioning groove forms an angle of 10 to 20° with the mounting center line; assuming that the seed length is a and the seed thickness is b, the length of the positioning groove is designed to be between 1a and 1.5b, and the width and depth are designed to be between 1a and 2b.

[0068] As a process optimization solution, to minimize damage to peanut seeds caused by the seed cup 105 during the seed removal process, all corners of the seed cup 105 are rounded. To ensure sufficient distance between seed removal and seed cleaning, the outer diameter of the seed cup mounting disc 106 is set between 280 and 300 mm. To prevent the seed cleaning process from being too long (preventing seeds from falling out of the seed cup 105 and causing empty holes to be sown), and to prevent excessive rotation speed, which may cause seeds to be unable to be removed and cause empty holes to be sown, or incomplete seed cleaning, which may cause overseeding, the outer edge linear speed of the seed cup mounting disc 106 is designed to be 0.4 to 1.0 m / s.

[0069] The seed protection shell 107 is formed with an annular cavity 107a that communicates with the second seed chamber 102b and accommodates two sets of seed cups 105. The annular cavity 107a extends in a circular shape based on the central axis of the seed cup mounting disc 106. The seed cup mounting disc 106 rotates within the seed protection shell 107, driving the seed cups 105 to move within the annular cavity 107a. The gap between the seed cups 105 and the wall of the annular cavity 107a is controlled to be 1-2 mm. The upper seed discharge port 108 is connected to the annular cavity 107a. The upper seed discharge port 108 of the seed protection shell 107 starts at an angle of 55° to 65° with the horizontal line and ends at an angle of 95° to 100° with the horizontal line.

[0070] The seed protection shell 107 is composed of two symmetrical disc plates, which are symmetrically distributed along the axial direction. The formed annular cavity 107a constitutes a seed discharge channel, and can also reduce the stirring of the peanut seeds in the seed chamber by the seed cup 105, thereby reducing the seed breakage rate.

[0071] like Figure 13-17 As shown, the auxiliary seeding device 2 includes:

[0072] The lower shell 204 is fixedly connected to the seed protection shell 107 through the connecting plate 3 (such as Figure 1 、 12 As shown), the connecting plate 3 is provided with two (as Figure 12 As shown), the two sides of the seed protection shell 107 and the two sides of the lower shell 204 are fixedly connected. The height of the connecting plate 3 can be adjusted according to actual needs. The seeds fall in the space between the two connecting plates 3. The lower shell 204 has a lower seed inlet 201 and a lower seed discharge port 206 on the upper and lower sides, respectively. The lower seed inlet 201 is directly below the upper seed discharge port 108;

[0073] The conveying mechanism includes a driving pulley 203, a passive pulley 205 and a conveyor belt 202. The driving pulley 203 and the passive pulley 205 are rotatably connected to the lower shell 204. The driving pulley 203 is transmission-connected to the power device 5. The conveyor belt 202 is equipped with the driving pulley 203 and the passive pulley 205 and is movably arranged inside the lower shell 204.

[0074] Among them, such as Figure 16As shown, the conveyor belt 202 is integrally fixed with a plurality of limiting plates 207 uniformly distributed along its length. The limiting plates 207 are perpendicular to the conveyor belt 202. Assuming the height of the seed is h, the height of the limiting plates 207 is 1.5h to 2h, so as to facilitate catching the peanut seeds discharged from the main seed discharge device 1. The gap between two adjacent limiting plates 207 is used to accommodate two seeds discharged from the upper seed discharge port 108. The spacing between two adjacent limiting plates 207 is large enough so that each pair of peanut seeds falling from above falls exactly between the two adjacent limiting plates 207 to prevent the peanut seeds from hitting the upper edge of the limiting plates 207 when falling. In order to ensure the quality of seed transportation, the two edges of the conveyor belt 202 are close to the inner wall of the lower shell 204 with a gap of 2 mm, and the edges of the limiting plates 207 are close to the inner wall of the lower shell 204 with a gap of 2 mm to prevent the peanut seeds from getting stuck in the above gap and causing damage.

[0075] The starting position of the lower seed inlet 201 of the lower shell 204 forms an angle of 105° to 110° with the horizontal line, and the ending position of the lower seed inlet 201 forms an angle of 70° to 75° with the horizontal line;

[0076] The width of the lower seed inlet 201 is slightly larger than the upper seed discharge port 108, which is 72 mm, to ensure that the seeds fall downward into the lower seed inlet 201 and fall into the gap between the two adjacent limiting plates 207 of the conveyor belt 202, so that the position of the seeds can be limited when they fall into the auxiliary seeding device 2.

[0077] The width of the lower seed discharge port 206 of the above-mentioned lower shell 204 is 72 mm. In order to make the speed direction of the seeds as horizontal as possible when they are discharged, to offset the forward speed of the machine, to achieve "zero speed" seeding, to prevent seeds from bouncing, and to further improve the uniformity of sowing, the starting position of the lower seed discharge port 206 is at an angle of 55° to 65° with the horizontal line, and the ending position is at an angle of 95° to 100° with the horizontal line.

[0078] like Figure 16 As shown, the limiting plate 207 can be a flat plate structure; Figure 17 Shown Figure 16 As an improvement measure of the scheme, the limiting plate 207 can be a V-shaped plate structure (also perpendicular to the conveyor belt 202) and have a V-shaped support groove 207a, which can receive peanut seeds and reduce the lateral distance when the seeds fall on the seed bed. It can better bring two peanut seeds closer together so that the peanut seeds will not scatter after falling to the ground, resulting in a large distance between the two peanut seeds, thereby ensuring the distance between the peanut sowing rows.

[0079] The above-mentioned seed monitoring device 4 is installed on the lower shell 204, and its monitoring end is facing the position of the conveyor belt 202. Corresponding holes are opened on the lower shell 204 to facilitate the infrared penetration of the seed monitoring device 4; the seed monitoring device 4 is used to monitor the sowing amount and the number of sowing grains. If it deviates from the pre-set sowing amount and the number of sowing grains, a warning will be issued with a light or a buzzer.

[0080] In order to ensure the movement synchronization between the seed cup mounting disc 106 and the conveyor belt 202, as shown in FIG. Figure 11 As shown, the power device 5 includes a driving shaft 501, a driving sprocket 502, a transmission chain 503, a driven shaft 504 and a driven sprocket 505. The driving shaft 501 is connected to the power source of the seeder, the driving shaft 501 is coaxially fixedly plugged into the seed cup mounting disc 106, the driving sprocket 502 is fixedly sleeved on the driving shaft 501, the driven shaft 504 is coaxially fixedly plugged into the driving pulley 203, and is coaxially sleeved on the driven sprocket 505, the transmission chain 503 is fitted with the driving sprocket 502 and the driven sprocket 505, so that the seed cup mounting disc 106 and the conveyor belt 202 can move synchronously, and the conveyor belt 202 has the same rotation direction as the main seed-feeding device 1, transmits the power between the main seed-feeding device 1 and the auxiliary seed-feeding device 2, forming an upper and lower linkage effect, ensuring that the seeding frequency of the main seed-feeding device 1 is consistent with the seeding frequency of the auxiliary seed-feeding device 2. The transmission ratio between the driving sprocket 502 and the driven sprocket 505 is determined to ensure that the auxiliary seeding device 2 can accurately catch the seeds.

[0081] During the seeding process, the seed cup mounting disc 106 is driven to rotate in the seed protection shell 107, so that the seed cups 105 on both sides of the seed cup mounting disc 106 simultaneously hold up the seeds in the second seed chamber 102b, and as the seed cup mounting disc 106 rotates, the seeds are brought to the upper seed discharge port 108 for downward discharge. The seeds fall into the lower seed inlet 201 of the lower shell 204, fall between the two adjacent limiting plates 207 of the conveyor belt 202, and are supported by the limiting plates 207 to move downward. Finally, the seeds are discharged downward through the lower seed discharge port 206 of the lower shell 204.

[0082] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through an intermediate connecting component, and the specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0083] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0084] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A low-breakage peanut seeding device that can achieve precise and controllable hole spacing, which is integrally installed on a seeder, characterized in that: It comprises a main seeding device (1), an auxiliary seeding device (2), a connecting plate (3), a seed monitoring device (4), and a power device (5); The auxiliary seeding device (2) is located below the main seeding device (1) and is fixedly connected to the main seeding device (1) through a connecting plate (3), and is used to receive and transport seeds sorted and transported by the main seeding device (1) downwardly. The seed monitoring device (4) is connected to the auxiliary seeding device (2); The main seed-discharging device (1) comprises: A seed chamber housing (102) has an upper seed inlet (101) on its upper side communicating with its inner cavity, and its inner cavity is configured as a seed chamber for accommodating a plurality of seeds; A partition plate (103) is fixed inside the seed chamber housing (102), the partition plate (103) divides the seed chamber into a first seed chamber (102a) and a second seed chamber (102b), the first seed chamber (102a) and the second seed chamber (102b) are distributed according to the direction in which the seeds roll down, the bottom wall of the seed chamber is an inclined surface to guide the seeds to roll from the first seed chamber (102a) to the second seed chamber (102b), and a gap is left between the bottom edge of the partition plate (103) and the bottom wall of the seed chamber to accommodate the passage of the seeds; A seed retaining plate (104), the seed retaining plate (104) being adjustably connected to the seed chamber housing (102) and used to adjust the size of the gap between the bottom edge of the partition plate (103) and the bottom wall of the seed chamber; A seed taking mechanism located at the second seed chamber (102b); Wherein, the seed taking mechanism includes: A seed protection shell (107), the seed protection shell (107) is in the shape of a circular shell as a whole, the seed protection shell (107) is fixedly connected to the seed chamber shell (102), the portion of the seed protection shell (107) located in the second seed chamber (102b) is set as an open structure, and the lower side of the seed protection shell (107) is provided with an upper seed discharge port (108) for dropping seeds into the auxiliary seed dropping device (2); A disc-shaped seed cup mounting disc (106) is rotatably connected to the seed protection shell (107) and the seed cup mounting disc (106) rotates around its horizontal axis. The seed cup mounting disc (106) is fixedly connected with two groups of seed cups (105). A single seed cup (105) has a positioning groove for accommodating a single seed and the opening faces upward when the seed is taken. The two groups of seed cups (105) are symmetrically distributed on the two axial end faces of the seed cup mounting disc (106). The number of seed cups (105) in each group is several and is evenly distributed along the circumference of the outer circular edge of the axial end face of the seed cup mounting disc (106). The two groups of seed cups (105) are directly opposite to each other in the axial direction of the seed cup mounting disc (106). The seed cup mounting disc (106) is connected to the power device (5) by transmission, and rotates in the seed protection shell (107) under the drive of the power device (5), so that the seed cup (105) can hold and position the seeds in the second seed chamber (102b), and bring the seeds to the position of the upper seed discharge port (108) as the seed cup mounting disc (106) rotates; The auxiliary seeding device (2) comprises: A lower shell (204), the lower shell (204) is fixedly connected to the seed protection shell (107) via a connecting plate (3), and the lower shell (204) has a lower seed inlet (201) and a lower seed discharge port (206) on the upper and lower sides, respectively, and the lower seed inlet (201) is located directly below the upper seed discharge port (108); A conveying mechanism, comprising a driving pulley (203), a passive pulley (205) and a conveyor belt (202), wherein the driving pulley (203) and the passive pulley (205) are rotatably connected to a lower housing (204), the driving pulley (203) is transmission-connected to a power device (5), and the conveyor belt (202) is fitted with the driving pulley (203) and the passive pulley (205) and is movably disposed within the lower housing (204); The conveyor belt (202) is integrally fixed with a plurality of limiting plates (207) uniformly distributed along the belt length direction, the limiting plates (207) are perpendicular to the conveyor belt (202) surface, the gap between two adjacent limiting plates (207) is used to accommodate two seeds discharged from the upper seed discharge port (108), the two edges of the conveyor belt (202) are close to the inner wall of the lower shell (204), and the edges of the limiting plates (207) are close to the inner wall of the lower shell (204).

2. A low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to claim 1, characterized in that: The seed cup (105) is detachably fixedly connected to the seed cup mounting disc (106); the positioning groove of the seed cup (105) is divided into a selectable seed positioning groove 1 (105a) and a seed positioning groove 2 (105b); the internal space dimensions of the seed positioning groove 1 (105a) and the seed positioning groove 2 (105b) respectively match the sizes of small seeds and large seeds; the seed positioning groove 1 (105a) and the seed positioning groove 2 (105b) are respectively used to position small seeds and large seeds.

3. A low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to claim 2, characterized in that: Observed from the axial end face of the seed cup mounting disc (106), the positioning groove of the seed cup (105) is V-shaped with the opening facing upward; the bottom of the positioning groove of the seed cup (105) is arranged obliquely, with the outer side higher and the inner side lower, so that the seeds can roll in and be positioned therein.

4. The low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to claim 1, characterized in that: The seed protection shell (107) is formed with an annular cavity (107a) which is connected to the second seed chamber (102b) and accommodates two groups of seed cups (105) to move therein. The annular cavity (107a) extends in a circular shape based on the central axis of the seed cup mounting disc (106), and the upper seed discharge port (108) is connected to the annular cavity (107a).

5. The low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to claim 1, characterized in that: The seed monitoring device (4) is installed on the lower shell (204), with its monitoring end facing the position of the conveyor belt (202).

6. The low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to claim 1, characterized in that: The power device (5) comprises a driving shaft (501), a driving sprocket (502), a transmission chain (503), a driven shaft (504) and a driven sprocket (505); the driving shaft (501) is docked with a power source; the driving shaft (501) is coaxially fixedly plugged into a seed cup mounting disc (106); the driving sprocket (502) is fixedly sleeved on the driving shaft (501); the driven shaft (504) is coaxially fixedly plugged into a driving pulley (203) and coaxially sleeved on a driven sprocket (505); and the transmission chain (503) is sleeved on the driving sprocket (502) and the driven sprocket (505).

7. The low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to claim 1, characterized in that: The lower seed discharge port (206) of the lower shell (204) has an angle of 55° to 65° with the horizontal line at its starting position and an angle of 95° to 100° with the horizontal line at its ending position; The starting position of the lower seed inlet (201) forms an angle of 105° to 110° with the horizontal line, and the ending position of the lower seed inlet (201) forms an angle of 70° to 75° with the horizontal line.

8. A low-breakage peanut seed metering device capable of achieving precise and controllable hole spacing according to any one of claims 1 to 7, characterized in that: The starting position of the upper seed discharge opening (108) of the seed protection shell (107) forms an angle of 55° to 65° with the horizontal line, and the ending position forms an angle of 95° to 100° with the horizontal line.

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