Seed metering executing mechanism and seed metering device

Abstract

The invention provides a seed-metering executing mechanism and a seed-metering device, and relates to the technical field of seed-metering devices, the seed-metering executing mechanism comprises a flexible conveying assembly and a seed spoon seed-metering assembly connected with the flexible conveying assembly, the seed spoon seed-metering assembly comprises a plurality of unit seed spoons, all the unit seed spoons are sequentially arranged along the flexible conveying assembly, and the flexible conveying assembly is connected with the seed spoon seed-metering assembly. Each unit seed spoon is provided with a containing groove used for containing seeds, and each unit seed spoon is provided with a seed cleaning knife; when two adjacent unit seed spoons are driven by the flexible conveying assembly to move to a seed metering position, the seed cleaning knife of the upstream unit seed spoon can be inserted into the accommodating groove of the downstream unit seed spoon so as to push seeds to be separated from the accommodating groove; the seed sowing device comprises the seed sowing executing mechanism; the non-occupation rate and the multiple rate can be reduced, the seed metering accuracy is improved, the seed damage rate can be remarkably reduced, the seed activity is ensured, meanwhile, the high-speed operation requirement is met, and both efficiency and quality are considered.

Description

Technical Field

[0001] This invention relates to the field of seed metering technology, specifically to a seed metering actuator and a seed metering device. Background Technology

[0002] In modern agricultural production, the seed metering device is a key piece of equipment for improving seed metering efficiency and ensuring planting quality. Its performance directly affects the subsequent growth of seeds and the final yield. As the core component of the seed metering system, the seed metering device undertakes the important functions of precise seed picking, delivery, and metering. Its operational stability and metering accuracy have always been a focus of attention in the industry. With the development of large-scale and intensive agriculture, the operating speed of seed metering devices is constantly increasing to improve operational efficiency. However, existing traditional seed metering devices (such as the lenticular wheel type and the air suction type) are gradually revealing many technical problems under high-speed operation. Traditional seed metering devices mostly rely on gravity, centrifugal force, or airflow adsorption to achieve seed detachment and metering. When the seed metering device is running at high speed, the seeds are easily affected by inertial forces during the transport and detachment process, resulting in unstable metering and deviations in the timing of seed detachment. This directly leads to a significant increase in the empty seed rate during metering, with some metering positions having no seeds, requiring later replanting and increasing planting costs. At the same time, the seeding rate also increases significantly, with multiple seeds appearing in a single hole frequently, which not only wastes seed resources but also affects growth due to competition for nutrients among seedlings. In addition, the structural design of traditional seed metering devices makes it easy for seeds to experience friction and impact during contact with components. Under high speed, this mechanical action is aggravated, leading to an increased seed damage rate, destroying seed integrity, reducing germination rate and seedling survival rate, and seriously restricting the quality and efficiency of metering.

[0003] Therefore, developing a seed metering actuator that can adapt to high-speed operation and effectively reduce the empty seed rate, multiple seed rate, and seed damage rate has become an urgent need for the current upgrade of seed metering technology. Summary of the Invention

[0004] The purpose of this invention is to provide a seeding execution mechanism and a seeding device to solve the above-mentioned technical problems existing in the prior art; the preferred technical solutions among the many technical solutions provided by this invention can produce many technical effects, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a seed metering execution mechanism, comprising a flexible conveying component and a seed scoop metering component connected to the flexible conveying component, wherein: the seed scoop metering component includes multiple unit seed scoops, all of which are arranged sequentially along the flexible conveying component, each unit seed scoop having a receiving groove for holding seeds, and each unit seed scoop having a seed cleaning blade; when two adjacent unit seed scoops move to the seed metering position under the drive of the flexible conveying component, the seed cleaning blade of the upstream unit seed scoop can be inserted into the receiving groove of the downstream unit seed scoop to push the seeds out of the receiving groove.

[0006] Preferably, the seed spoon body has a first groove, which can hold seeds of a corresponding size and form the receiving groove; the seed spoon body has a first limiting baffle on one side of the opening of the first groove for guiding the seeds into the receiving groove.

[0007] Preferably, the first limiting baffle is provided with a first clearance groove, and the seed cleaning knife of the upstream unit seed spoon can be inserted into the first groove of the downstream unit seed spoon along the first clearance groove; the seed cleaning knife is provided on the seed spoon body on one side located at the bottom of the first groove, and the seed cleaning knife corresponds to the first clearance groove.

[0008] Preferably, the seed spoon body is provided with a filling seed spoon, the filling seed spoon is adapted to the first groove, the filling seed spoon is detachably disposed in the first groove, the filling seed spoon is provided with a second groove, the second groove can hold seeds of the corresponding size and specifications, the second groove can form the receiving groove; the filling seed spoon is provided with a second relief groove at the position corresponding to the first relief groove, and the seed cleaning knife of the upstream unit seed spoon can be inserted into the second groove of the downstream unit seed spoon along the first relief groove and the second relief groove.

[0009] Preferably, each of the seed spoon bodies is provided with a plurality of filling seed spoons, and the plurality of filling seed spoons are respectively provided with second grooves of different sizes and specifications, and any one of the filling seed spoons can be placed in the first groove; the filling seed spoons are snapped together with the seed spoon bodies.

[0010] Preferably, the flexible conveying assembly is configured as a chain conveying assembly, which includes a conveying power assembly, a driving sprocket, a driven sprocket, and a transmission chain, wherein: the output end of the conveying power assembly is connected to the driving sprocket; the driving sprocket is connected to the driven sprocket through the transmission chain; the transmission chain includes multiple unit links connected in sequence, and the unit seed scoop is connected to the unit links.

[0011] The present invention provides a seed metering device, which includes any of the seed metering execution mechanisms described above.

[0012] Preferably, the seed metering device includes a housing and a seed collection box, wherein: the seed metering actuator is disposed inside the housing, the seed collection box is disposed on the housing, the bottom of the seed collection box is provided with a feeding port, and the seed collection position of the seed metering actuator is located below the feeding port; the housing is provided with a seed metering channel for conveying single seeds at intervals, the inlet end of the seed metering channel corresponds to the seed metering position of the seed metering actuator, the outlet end of the seed metering channel is provided with a seed discharge port, and two adjacent seeds in the seed metering channel are separated by the unit seed scoop that has moved to a flipped state.

[0013] Preferably, the seed metering device includes a screening mechanism for screening out excess seeds on the unit seed scoop and causing them to fall; a screening channel is provided inside the housing on the side of the flexible conveying assembly away from the seed scoop seed metering assembly for guiding the screened and falling seeds to the seed taking position.

[0014] Preferably, the screening mechanism includes a screening roller brush, which is tractively connected to the flexible conveying assembly and can rotate under the drive of the flexible conveying assembly to remove excess seeds from the receiving groove.

[0015] Preferably, the screening mechanism further includes an accelerator sprocket assembly, and the flexible conveying assembly is connected to the screening roller brush via the accelerator sprocket assembly.

[0016] Preferably, the screening roller brush is inclined; the screening mechanism includes a face gear assembly, and the screening mechanism is connected to the acceleration sprocket assembly through the face gear assembly.

[0017] Preferably, the flexible conveying assembly includes a seed-collecting section, a screening section, a seed-discharging section, and a transition section. The seed-collecting section, the screening section, the seed-discharging section, and the transition section are sequentially connected end-to-end to form a seed scoop conveying loop. The seed-collecting section corresponds to the seed-collecting box and is set at an acute angle relative to the horizontal direction. The screening section corresponds to the screening mechanism and is set at an obtuse angle relative to the horizontal direction. The seed-discharging section is located within the seed-discharging channel.

[0018] Preferably, a gate mechanism is provided at the discharge port. The gate mechanism includes an inclined guide, a gate body, and a gate drive assembly. The inclined guide is inclinedly disposed below the discharge port. The gate body is slidably disposed on the inclined guide. The gate drive assembly is pulsatorically connected to the gate body and can drive the gate body to move along the inclined guide.

[0019] Preferably, the gate drive assembly includes a gate power assembly, a transmission gear, and a transmission rack. The output end of the gate power assembly is connected to the transmission gear and can drive the transmission gear to rotate. The transmission gear meshes with the transmission rack. The transmission rack is fixedly mounted on the gate body and moves synchronously with the gate body.

[0020] Preferably, the gate power assembly is configured as a handwheel.

[0021] The seed metering execution mechanism and seed metering device provided by the present invention have at least the following beneficial effects: I. Significantly reduce the rate of empty seeds and improve the integrity of seeding: In the seed metering assembly, multiple seed scoop units are arranged in an orderly manner along the flexible conveyor assembly. Each seed scoop's receiving groove can stably receive and accommodate seeds, ensuring the reliability of the seed collection process. When an adjacent seed scoop unit moves to the seed metering position, the cleaning blade of the upstream seed scoop precisely inserts into the receiving groove of the downstream seed scoop, forcibly removing the seeds through active pushing. This active pushing mechanism replaces the passive seed removal method of traditional seed metering devices that relies on gravity or centrifugal force. It effectively avoids the problems of untimely and unstable seed removal at high speeds, ensuring that seeds fall accurately at the preset seed metering position, significantly reducing the empty seed rate and improving the integrity of seed metering. II. Effectively control multiple rates and improve seeding accuracy: The size of the seed scoop's receiving slot can be customized according to the seed specifications, enabling single-seed extraction from the source and reducing the possibility of multiple seeds entering the receiving slot simultaneously. Simultaneously, the seed-cleaning blade precisely targets the seeds within the receiving slot during the seed-pushing process, ensuring that each action effectively removes all seeds from the slot. This avoids the problem of multiple seeds per hole caused by excessive seed extraction or incomplete seed removal, as seen in traditional seed metering devices. This significantly reduces the seeding rate, improves the uniformity and accuracy of seed metering, and conserves seed resources.

[0022] III. Significantly reduces seed damage rate and ensures seed viability: The seed-cleaning blade uses a structure that inserts into the receiving groove to push the seeds out, avoiding the intense friction, impact, or strong suction between the seeds and components in traditional seed metering devices, thus reducing mechanical damage to the seeds. Furthermore, the flexible transmission characteristics of the flexible conveying component reduce the impact and vibration during the movement of the seed scoop, further mitigating the stress on the seeds during conveying and threshing, effectively protecting seed integrity, ensuring seed germination potential and seedling survival rate, and reducing planting risks caused by seed damage. IV. Adaptable to high-speed operation requirements, balancing efficiency and quality: The flexible conveyor assembly exhibits excellent transmission stability and tracking capability, ensuring precise and controllable movement trajectory of the unit seed scoop even at high speeds. This guarantees accurate timing of the upstream seed cleaning blade's engagement with the downstream receiving trough. This structural design overcomes the bottleneck of traditional seed metering devices' performance degradation at high speeds, enabling the seed metering device to maintain high seed metering quality while increasing operating speed and production efficiency. It meets the demands of modern agriculture for efficient and precise seed metering, providing reliable technical support for large-scale planting. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of one embodiment of the seeding execution mechanism of the present invention; Figure 2 This is the present invention. Figure 1 Enlarged view of part A; Figure 3 This is an exploded view of the unit seed spoon and chain link of the present invention; Figure 4 This is an exploded schematic diagram of the seed spoon and chain link of the present invention from another perspective; Figure 5 This is a schematic diagram of the structure of one embodiment of the seed metering device of the present invention from one perspective; Figure 6 This is a schematic diagram of another perspective of one embodiment of the seed metering device of the present invention; Figure 7 This is an exploded view of one embodiment of the seed metering device of the present invention; Figure 8 This is a schematic diagram of the internal structure of the housing of one embodiment of the seed metering device of the present invention; Figure 9 This is a schematic diagram of the internal structure of the seed metering device and the screening mechanism in one embodiment of the present invention. Figure 10 This is a schematic diagram of the structure of another embodiment of the seed metering device of the present invention from one perspective; Figure 11 This is a schematic diagram of another embodiment of the seed metering device of the present invention from another perspective; Figure 12 This is a schematic diagram of the internal structure of the casing of another embodiment of the seed metering device of the present invention; Figure 13 This is a schematic diagram of another embodiment of the seeding execution mechanism of the present invention; Figure 14 This is a schematic diagram of the internal structure of the seed metering device and the screening mechanism in another embodiment of the present invention. Figure 15 This is a schematic diagram of the structure of the screening roller brush and face gear assembly of the present invention from one perspective; Figure 16 This is a structural schematic diagram of the screening roller brush and face gear assembly of the present invention from another perspective; Figure 17 This is a schematic diagram of the gate mechanism of the present invention from one perspective; Figure 18 This is a structural schematic diagram of the gate mechanism of the present invention from another perspective.

[0025] Figure Labels 1. Flexible conveyor assembly; 11. Drive sprocket; 12. Driven sprocket; 13. Transmission chain; 131. Unit link; 132. Seed picking section; 133. Screening section; 134. Seed dispensing section; 135. Transition section; 2. Seed scoop dispensing assembly; 21. Unit seed scoop; 211. Seed scoop body; 2111. First groove; 2112. Seed cleaning knife; 2113. First limiting baffle; 2114. First clearance groove; 212. Filling seed scoop; 2121. Second groove; 2122. Second limiting baffle. 2123, Second clearance groove; 2124, Snap-fit ​​structure; 3, Housing; 31, Seed dispensing position; 32, Seed taking position; 33, Seed dispensing channel; 34, Screening channel; 4, Seed taking box; 5, Screening mechanism; 51, Screening roller brush; 52, Accelerating sprocket assembly; 53, Face gear assembly; 531, Corner housing; 532, First face gear; 533, Second face gear; 6, Gate mechanism; 61, Inclined guide; 62, Gate body; 63, Transmission gear; 64, Transmission rack. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] Example 1: This invention provides a seeding execution mechanism, with reference to Figures 1 to 4 As shown, the seed metering mechanism includes a flexible conveying component 1 and a seed scoop seed metering component 2, which is connected to the flexible conveying component 1.

[0028] The seed scoop metering assembly 2 includes multiple unit seed scoops 21, all of which are arranged sequentially along the flexible conveying assembly 1. Each unit seed scoop 21 is provided with a receiving groove for holding seeds, and each unit seed scoop 21 is provided with a seed cleaning knife 2112.

[0029] During seeding, the seeds are placed on the receiving groove of the unit seed scoop 21. The flexible conveying component 1 drives the seed scoop seeding component 2 to move. When two adjacent unit seed scoops 21 move to the seeding position 31, the seed cleaning knife 2112 of the upstream unit seed scoop 21 is inserted into the receiving groove of the downstream unit seed scoop 21, thereby pushing the seeds out of the receiving groove.

[0030] In the above process, the seed-clearing knife 2112 can effectively avoid seed jamming by actively pushing the seed, ensuring that the seed can be removed in time even when it is moving at high speed, and ensuring that the seed falls accurately at the seed-laying position 31, thereby significantly reducing the vacancy rate and improving the integrity of seed-laying.

[0031] Furthermore, the seed cleaning blade 2112 pushes out seeds by inserting into the receiving groove, reducing the intense friction, impact and strong suction between seeds and components in traditional seed metering devices, reducing seed damage, and ensuring seed germination potential and seedling survival rate.

[0032] Meanwhile, in practical applications, the size of the receiving slot can be set according to the specifications of the seeds, so that each receiving slot can only hold one seed. This can effectively avoid the problem of excessive seed taking by existing seed metering devices. Combined with the active seed pushing method, it completely solves the phenomenon of multiple seeds per hole, greatly reduces the seeding rate, and improves the accuracy of seed metering.

[0033] In addition, the flexible conveyor component 1 has the advantages of flexibility and bending characteristics, which allows the adjacent seed scoops 21 to move relative to each other, thereby ensuring the pushing action of the seed cleaning knife 2112. On the other hand, it has good transmission stability and following ability, which can achieve high-speed operation and improve seeding efficiency while ensuring the seeding effect.

[0034] This invention is applicable to crops such as peanuts and soybeans.

[0035] Example 2: Example 2 is based on Example 1: like Figures 1 to 4 As shown, a first groove 2111 is provided on the seed spoon body 211. The first groove 2111 can hold seeds of the corresponding size and specifications, and the first groove 2111 can form the receiving groove.

[0036] A first limiting baffle 2113 is provided on one side of the opening of the first groove 2111 on the body 211 of the seed spoon.

[0037] The first limiting baffle 2113 is integrally set with the seed spoon body 211, and it covers the outer edge of the groove of the first groove 2111 at nearly 180°. When picking up seeds, the seeds that touch the first limiting baffle 2113 can be guided into the first groove 2111, thereby ensuring the seed picking effect.

[0038] As an optional implementation, the first limiting baffle 2113 is provided with a first clearance groove 2114. The width of the first clearance groove 2114 is greater than the thickness of the seed cleaning knife 2112. In this way, the seed cleaning knife 2112 of the upstream unit seed spoon can be inserted into the first groove 2111 of the downstream unit seed spoon 21 along the first clearance groove 2114, thereby pushing the seeds placed in the first groove 2111.

[0039] The first clearance groove 2114 serves two purposes: firstly, it provides clearance by precisely matching the blade grooves, reducing mechanical interference, accelerating the seed cleaning response speed, ensuring the accuracy of the seed cleaning action, and guaranteeing the smoothness and stability of continuous seed dispensing; secondly, its compact structure effectively increases the seed capacity of the seed spoon seed dispensing component 2 within a given volume.

[0040] As an optional implementation, the seed cleaning knife 2112 is disposed on one side of the bottom of the first groove 2111 on the seed spoon body 211, and the seed cleaning knife 2112 corresponds to the first clearance groove 2114.

[0041] During the seeding process, when two adjacent seed scoops 21 are on the same straight line, the seed cleaning blade 2112 of the upstream seed scoop is located in the first clearance groove 2114 of the downstream seed scoop.

[0042] When the two unit seed scoops 21 move to the seeding position 31, the two unit seed scoops 21 rotate relative to each other, and the seed cleaning knife 2112 of the upstream unit seed scoop can pass through the first clearance groove 2114 of the downstream unit seed scoop and be inserted into the first groove 2111 of the downstream unit seed scoop.

[0043] As an optional implementation, the seed spoon body 211 is correspondingly provided with a filling seed spoon 212. The filling seed spoon 212 is shaped to fit the first groove 2111. The filling seed spoon 212 is detachably disposed in the first groove 2111. A second groove 2121 is provided on the filling seed spoon 212. The size of the second groove 2121 is smaller than that of the first groove 2111. The second groove 2121 can form the receiving groove. The first groove 2111 can accommodate seeds of a larger size, and the second groove 2121 can accommodate seeds of a smaller size.

[0044] A second limiting baffle 2122 is integrally provided on the filling spoon 212 at the slot of the second groove 2121. When the filling spoon 212 is installed in the first groove 2111, the second limiting baffle 2122 fits against the first limiting baffle 2113, which makes the installation more stable on the one hand, and also has a guiding function, which can guide the seeds to fall into the second groove 2121.

[0045] The second limiting baffle 2122 is provided with a second clearance groove 2123 at the position corresponding to the first clearance groove 2114. During seeding, the seed cleaning knife 2112 of the upstream unit seed spoon 21 can be inserted into the second groove 2121 of the downstream unit seed spoon 21 along the first clearance groove 2114 and the second clearance groove 2123.

[0046] As an optional implementation, each seed spoon body 211 is provided with a plurality of filling seed spoons 212, and the plurality of filling seed spoons 212 are respectively provided with second grooves 2121 of different sizes and specifications. The filling seed spoons 212 of different specifications correspond to seeds of corresponding sizes and specifications, and any filling seed spoon 212 can be set in the first groove 2111.

[0047] In practical applications, users select and install the appropriate seed filling spoon 212 according to the size and specifications of the seeds.

[0048] The seed spoon body 211 and the filling seed spoon 212 work together to suit seeds of various sizes, making it widely applicable.

[0049] As an optional method, the bottom of the filling spoon 212 is integrally provided with a snap-fit ​​structure 2124, which is set as a snap-fit ​​buckle. The first groove 2111 of the spoon body 211 is provided with a locking groove. When the filling spoon 212 is inserted into the first groove 2111, the snap-fit ​​buckle engages with the locking groove.

[0050] The seed spoon body 211 and the filling seed spoon 212 are easy to assemble and disassemble using a snap-fit ​​installation method.

[0051] As an optional implementation, the flexible conveying assembly 1 is configured as a chain conveying assembly, which includes a conveying power assembly, a driving sprocket 11, a driven sprocket 12, and a transmission chain 13. The conveying power assembly can be a mechanical power device or an electric power device, and its output end is connected to the driving sprocket 11. The driving sprocket 11 is connected to the driven sprocket 12 through the transmission chain 13. The number of driven sprockets 12 is set to be multiple. The transmission chain 13 includes multiple unit links 131 connected in sequence, and the unit seed scoop 21 is connected to the unit link 131.

[0052] The chain conveyor structure forms a closed conveying path, ensuring uniform speed of the unit seed scoop 21 during movement and preventing disruption of the seeding rhythm due to power fluctuations. It also enables a cycle of empty and full scoops, guaranteeing seeding efficiency. Furthermore, the chain structure combines rigidity and flexibility, allowing for both straight-line and bending conveying to ensure effective seeding. It also provides load-bearing capacity and durability, ensuring a long service life. In addition, the stable transmission ratio of the chain conveyor structure ensures consistent seeding rhythm.

[0053] As an optional implementation, the side wall of the seed spoon body 211 is fixedly connected to the corresponding unit link 131 by a threaded connector; this configuration is simple in structure, the connection is firm and convenient for disassembly and assembly.

[0054] As an optional implementation, the unit seed spoon 21 is made of soft material, which does not damage the seeds during high-speed seed dispensing, further reducing the seed damage rate and improving seed activity. Optionally, the unit seed spoon 21 is made of plastic.

[0055] Example 3 Example 3 is based on Example 2: This invention provides a seed metering device, such as... Figures 1 to 9 As shown, the seed metering device includes the seed metering execution mechanism.

[0056] The number of seeding execution mechanisms is set to at least one, capable of single-channel and multi-channel seeding.

[0057] As an optional implementation, the seed metering device includes a housing 3 and a seed collection box 4.

[0058] The seed dispensing mechanism is located inside the housing 3. The seed collection box 4 is shaped like a bucket and is located on the housing 3. The bottom of the seed collection box 4 is provided with a feeding port. The seed collection position 32 of the seed dispensing mechanism is located below the feeding port.

[0059] When taking seeds, the seeds in the seed box 4 can fall through the feed port and land on the unit seed spoon 21 that has moved to the seed taking position 32.

[0060] The housing 3 is equipped with a seed dispensing channel 33, which is used to deliver single seeds at intervals. The top of the seed dispensing channel 33 is the inlet end, which corresponds to the seed dispensing position 31 of the seed dispensing actuator. The transmission chain 13 and the seed spoon seed dispensing assembly 2 are bent at this point. The bottom of the seed dispensing channel 33 is the outlet end, which is equipped with a seed dispensing port. The seed dispensing port is close to the ground and does not require an additional seed dispensing pipe.

[0061] During the seed dispensing process, the unit seed scoop 21 moves to the seed dispensing position 31 and begins to push the seed. As the unit seed scoop 21 continues to move, it completely flips over, and the seed cleaning knife 2112 completely pushes out the seed. At the same time, under the action of the seed's gravity, the seed falls and completely detaches from the receiving groove. At this time, two adjacent seeds are separated by the flipped unit seed scoop 21. Then, with the movement of the transmission chain 13, the seed moves to the seed dispensing port and falls, completing the seed dispensing process.

[0062] As an optional implementation, the seed metering device includes a screening mechanism 5. A screening channel 34 is provided inside the housing 3 on one side of the screening section 133 of the flexible conveying assembly 1. The screening channel 34 is inclined and its bottom end corresponds to the seed taking position 32.

[0063] During the seed dispensing process, excess seeds in the unit seed scoop 21 fall into the screening channel 34 under their own weight and the screening action of the screening mechanism 5, and slide to the seed taking position 32 under the guidance of the screening channel 34, and fall back onto the corresponding unit seed scoop 21.

[0064] The screening mechanism 5 includes a screening roller brush 51, which is located upstream of the seeding position 31. The screening roller brush 51 is connected to the flexible conveying assembly 1 via a drive mechanism. The screening roller brush 51 shares the power component of the flexible conveying assembly 1, which can effectively ensure the cost of the equipment.

[0065] During the seed dispensing process, when the unit seed scoop 21 moves to the screening roller brush 51, the screening roller brush 51 rotates to screen out excess seeds that fall onto the receiving groove during seed collection, ensuring that only one seed is placed in the receiving groove.

[0066] Combining gravity screening with roller brush screening results in a highly effective screening process.

[0067] As an optional implementation, the screening mechanism 5 also includes an acceleration sprocket assembly 52, through which the flexible conveying assembly 1 is connected to the screening roller brush 51.

[0068] Thus, the rotational speed of the screening roller brush 51 is greater than the moving speed of the unit seed spoon 21, which can create a speed difference, which is beneficial for screening.

[0069] As an optional implementation, the transmission chain 13 is divided into a seed-collecting section 132, a screening section 133, a seed-discharging section 134, and a transition section 135 according to its function and position. The seed-collecting section 132, the screening section 133, the seed-discharging section 134, and the transition section 135 are connected sequentially end to end in a loop to form a seed scoop conveying loop. The driving sprocket 11 is set at the transition position between the screening section 133 and the seed-discharging section 134. A driven sprocket 12 is set at the transition position between the seed-discharging section 134 and the transition section 135. A driven sprocket 12 is also set at the transition position between the transition section 135 and the seed-collecting section 132. The transition between the seed-collecting section 132 and the screening section 133 can be achieved by setting a driven sprocket, a shaft, or by the shell structure of the housing 3.

[0070] The seed-collecting section 132 corresponds to the seed-collecting box 4, and the seed-collecting section 132 is set at an acute angle relative to the horizontal direction.

[0071] The screening section 133 corresponds to the screening mechanism 5. The screening section 133 is set at an angle relative to the horizontal direction, and the angle between the screening section 133 and the seed-taking section 132 is an obtuse angle.

[0072] The seeding section 134 is located within the seeding channel 33.

[0073] In practical applications, users can set the seed-taking segment and the screening segment to specific angles according to their actual needs.

[0074] Example 4 Example 4 is based on Example 3: like Figures 5 to 9 As shown, the screening roller brush 51 is set horizontally.

[0075] The accelerator sprocket assembly 52 includes an input sprocket that meshes with the transmission chain 13. An input gear is coaxially arranged on the input sprocket and rotates synchronously with the input sprocket. An output gear meshes with the input gear and is coaxially arranged with the screening roller brush 51 and rotates synchronously. The number of teeth on the input gear is greater than the number of teeth on the output gear, forming an accelerator gear set.

[0076] Example 5 The difference between Example 5 and Example 4 is that: like Figures 10 to 18 As shown, the screening roller brush 51 is set at an angle.

[0077] This allows the screening roller brush 51 to have a large oscillation amplitude during rotation, further improving the screening effect and effectively controlling multiple rates while significantly reducing the vacancy rate.

[0078] The screening mechanism 5 includes a face gear assembly 53, which is connected to the acceleration sprocket assembly 52.

[0079] The face gear assembly 53 includes a corner housing 531, a first face gear 532, and a second face gear 533. The corner housing 531 includes an integrally formed horizontal housing and an inclined housing. The first face gear 532 is coaxially disposed in the inclined housing, and the second face gear 533 is coaxially disposed in the horizontal housing. The first face gear 532 is fixedly connected to the screening roller brush 51 and rotates synchronously. The second face gear 533 is fixedly connected to the output shaft of the acceleration sprocket assembly 52 and rotates synchronously. The first face gear 532 and the second face gear 533 mesh with each other.

[0080] The gear transmission assembly ensures a stable and reliable transmission process.

[0081] As an optional implementation, the accelerator sprocket assembly 52 includes a first sprocket, a transmission gear set, and a second sprocket. The first sprocket is coaxially arranged with the drive sprocket 11 and moves synchronously. The first sprocket is connected to the second sprocket through the gear transmission set. The second sprocket is coaxially arranged with the second face gear and rotates synchronously.

[0082] As an optional implementation, a gate mechanism 6 is provided at the feeding port. The gate mechanism 6 includes an inclined guide 61, a gate body 62, and a gate drive assembly. The inclined guide 61 is inclinedly disposed below the feeding port and includes two opposing slide rails with slide tracks. The two sides of the gate body 62 are respectively disposed in the corresponding slide tracks. The gate drive assembly is pulsatorically connected to the gate body 62 and can drive the gate body 62 to move along the slide tracks.

[0083] The gate mechanism 6 is used to adjust the seed taking amount and the height of the seed filling surface. When the gate body 62 moves downward, the larger the seed taking amount, the higher the seed filling surface. When the gate body 62 moves upward, the smaller the seed taking amount, the lower the seed filling surface.

[0084] In practical applications, users make settings according to their actual needs.

[0085] As an optional implementation, the gate drive assembly includes a gate power assembly, a transmission gear 63, and a transmission rack 64. The output end of the gate power assembly is connected to the transmission gear 63 and can drive the transmission gear 63 to rotate. The transmission gear 63 meshes with the transmission rack 64, and the transmission rack 64 is fixedly mounted on the gate body 62 and moves synchronously with the gate body 62. The use of a gear and rack mechanism can effectively convert the rotational motion of the gate power component output into the movement motion of the gate body 62.

[0086] As an optional implementation, the gate power assembly is a manual power assembly, which is configured as a handwheel, and the handwheel is coaxially arranged with the transmission gear 63.

[0087] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0090] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A seeding execution mechanism, characterized in that, It includes a flexible conveying assembly and a seed scoop dispensing assembly connected to the flexible conveying assembly, wherein: The seed scoop metering assembly includes multiple unit seed scoops, all of which are arranged sequentially along the flexible conveying assembly. Each unit seed scoop is provided with a receiving groove for holding seeds and a seed cleaning knife. When two adjacent unit seed scoops move to the metering position under the drive of the flexible conveying assembly, the seed cleaning knife of the upstream unit seed scoop can be inserted into the receiving groove of the downstream unit seed scoop to push the seeds out of the receiving groove.

2. The seed metering actuator according to claim 1, wherein, The unit seed spoon includes a seed spoon body, on which a first groove is formed. The first groove can hold seeds of a corresponding size and can form the receiving groove. The seed spoon body is provided with a first limiting baffle for guiding seeds into the receiving groove on one side of the first groove opening. The first limiting baffle is provided with a first clearance groove. The seed cleaning knife of the upstream unit seed spoon can be inserted into the first groove of the downstream unit seed spoon along the first clearance groove. The seed cleaning knife is located on one side of the bottom of the first groove on the seed spoon body, and the seed cleaning knife corresponds to the first clearance groove.

3. The seed meter actuator of claim 2, wherein, The seed spoon body is correspondingly provided with a filling seed spoon, the filling seed spoon is adapted to the first groove, the filling seed spoon is detachably disposed in the first groove, the filling seed spoon is provided with a second groove, the second groove can hold seeds of corresponding size and specifications, and the second groove can form the receiving groove; The filling seed spoon is provided with a second relief groove at the position corresponding to the first relief groove, and the seed cleaning knife of the upstream unit seed spoon can be inserted into the second groove of the downstream unit seed spoon along the first relief groove and the second relief groove; Each of the seed spoon bodies is provided with a plurality of filling seed spoons, and the plurality of filling seed spoons are provided with second grooves of different sizes and specifications. Any one of the filling seed spoons can be placed in the first groove, and the filling seed spoon is snapped and connected to the seed spoon body.

4. The seed meter actuator of claim 1, wherein, The flexible conveying assembly is configured as a chain conveying assembly, which includes a conveying power assembly, a driving sprocket, a driven sprocket, and a transmission chain, wherein: The output end of the power transmission component is connected to the drive sprocket. The driving sprocket is connected to the driven sprocket via the transmission chain; The transmission chain includes multiple unit links connected in sequence, and the unit seed spoon is connected to the unit links.

5. A seed meter characterized by, Includes the seeding execution mechanism described in any one of claims 1 to 4.

6. The seed meter of claim 5, wherein, The seed metering device includes a housing and a seed collection box, wherein: The seed dispensing mechanism is located inside the machine housing, the seed collection box is located on the machine housing, the bottom of the seed collection box is provided with a feeding port, and the seed collection position of the seed dispensing mechanism is located below the feeding port; The housing is provided with a seed dispensing channel for feeding single seeds at intervals. The inlet end of the seed dispensing channel corresponds to the seed dispensing position of the seed dispensing actuator, and the outlet end of the seed dispensing channel is provided with a seed dispensing port. Two adjacent seeds in the seed dispensing channel are separated by the unit seed scoop that has been moved to a flipped state.

7. The seed meter of claim 6, wherein, The seed metering device includes a screening mechanism. A screening channel is provided inside the housing on the side of the flexible conveying assembly away from the seed scoop seed metering assembly, for guiding the screened and falling seeds to the seed collection position. The screening mechanism includes a screening roller brush, which is connected to the flexible conveying assembly and can rotate under the drive of the flexible conveying assembly to remove excess seeds from the receiving groove. The screening mechanism also includes an acceleration sprocket assembly, and the flexible conveying assembly is connected to the screening roller brush via the acceleration sprocket assembly.

8. The seed meter of claim 7, wherein, The screening roller brush is set at an angle; The screening mechanism includes a face gear assembly, which is connected to the accelerator sprocket assembly.

9. The seed meter of claim 7, wherein, The flexible conveying assembly includes a seed-collecting section, a screening section, a seed-discharging section, and a transition section. The seed-collecting section, the screening section, the seed-discharging section, and the transition section are connected sequentially end to end in a loop to form a seed scoop conveying loop. The seed-collecting section corresponds to the seed-collecting box, and the seed-collecting section is set at an acute angle relative to the horizontal direction; The screening section corresponds to the screening mechanism, the screening section is inclined relative to the horizontal direction, and the angle between the screening section and the seed collection section is an obtuse angle; The seeding section is located within the seeding channel.

10. The seed meter of claim 6, wherein, A gate mechanism is provided at the feeding port. The gate mechanism includes an inclined guide, a gate body, and a gate drive assembly. The inclined guide is inclinedly disposed below the feeding port. The gate body is slidably disposed on the inclined guide. The gate drive assembly is pulsatorically connected to the gate body and can drive the gate body to move along the inclined guide. The gate drive assembly includes a gate power assembly, a transmission gear, and a transmission rack. The output end of the gate power assembly is connected to the transmission gear and can drive the transmission gear to rotate. The transmission gear meshes with the transmission rack. The transmission rack is fixedly mounted on the gate body and moves synchronously with the gate body. The gate power assembly is configured as a handwheel.

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