A continuous seedling transplanting device for rice pot seedlings

Abstract

The present application relates to the technical field of agricultural machinery, and discloses a continuous seedling transplanting device for potted rice seedlings, which comprises two seedling transplanting units oppositely arranged directly below seedling boxes. Each seedling transplanting unit is cooperatively matched with a transmission shaft, a first rotating disc, a sleeve, a second rotating disc, a Z-shaped connecting rod, a prying rod with prying fingers and multiple groups of pulleys to construct a spatially virtual parallelogram mechanism. The mechanism drives the prying fingers to periodically stretch and retract and constantly swing in a circumferential direction, realizes continuous parallel pulling and releasing of the potted seedlings, forms a stable material flow, and avoids seedling blockage and entanglement. The prying fingers keep a constant inclination angle relative to the horizontal plane during movement, ensure that a vertical downward parallel pulling force is applied to the seedlings, effectively protect the root soil from being torn or damaged, and are beneficial to green-up survival after transplanting. Meanwhile, the assembly angle of the prying rod and the connecting rod can be adjusted to flexibly change the working posture of the prying fingers, so as to adapt to the grasping requirements of the potted seedlings under different water content conditions.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a continuous rice seedling planting device in pots. Background Technology

[0002] With the development of agricultural modernization, rice cultivation methods are shifting from manual to mechanized. The transplanting technique utilizes the weight of the seedlings in the pots to fall into the field, offering advantages such as shallow mud deposition, rapid greening, simple seedling raising, and high operational efficiency, making it more suitable for multi-season rice cultivation areas.

[0003] However, due to the irregular shape of rice seedlings in pots and the tendency for soil clumps to stick together, existing rice transplanting devices are prone to clogging and separation difficulties during mechanized operations. It is difficult to form a stable and continuous quantitative flow of accumulated rice seedlings, and the finger-type mechanisms are prone to seedling entanglement, severely restricting the large-scale application of disordered transplanting technology and thus having shortcomings. Summary of the Invention The present invention aims to at least improve one of the technical problems existing in the prior art. To this end, the present invention proposes a continuous rice seedling planting device in pots.

[0004] The technical solution of the present invention is as follows: A continuous rice seedling lowering device is installed on a transplanter frame, which is equipped with a seedling box. The continuous lowering device includes two oppositely arranged lowering units, fixedly installed directly below the seedling box. The drive shafts of the two lowering units rotate synchronously in opposite directions, and two sets of lifting fingers cooperate to pull the seedlings in the pots. Each lowering unit includes: The drive shaft connects to the power source; Two first rotating disks are mounted on the drive shaft at intervals, wherein a first through hole is provided at each apex corner of the first rotating disk; A sleeve is installed on the two first rotating disks, forming a cavity with the first rotating disks. Multiple slots are opened on the outer wall of the sleeve. Two second rotating disks are located outside the first rotating disk. A second through hole is provided at each apex of the second rotating disk. An annular rotating groove coaxial with the rotation center of the second rotating disk is provided in the middle of each second rotating disk. The first rotating disk and the second rotating disk are not concentrically arranged. The radial distance from the center of the first through hole on the first rotating disk and the second through hole on the second rotating disk to the rotation axis of their respective rotating disks is equal. Multiple connecting rods, forming a Z-shape, with one end connected to the second rotating disk and the other end extending through the first rotating disk into the cavity; Multiple levers are connected to the ends of connecting rods located within the cavity. Each lever has multiple fingers that can pass through the rotating groove. Multiple sets of pulleys are installed in a circular array on the transplanter frame. The center of the pulleys is on the same axis as the rotation center of the first rotating disk, and the circumference of the pulleys is tangentially fitted to the rotation groove of the second rotating disk. When the first rotating disk rotates, the second rotating disk moves synchronously under the support and constraint of the pulleys, so that the pulling fingers maintain a constant posture in the cavity and swing back and forth in a circumferential direction to pull the seedlings in the pot parallel out of the seedling box.

[0005] In one possible technical solution, the first rotating disk and its corresponding second rotating disk both adopt the special geometric configuration of the Reich triangle in their overall outline shape. Specifically, each rotating disk comprises three protruding apex corners and three smooth, outwardly convex arc edges connecting these apex corners, thus forming its unique outer edge feature. Simultaneously, the sleeve, which mates with this, has its internal through-space cross-sectional shape designed to precisely match a Reichstag triangle, thereby ensuring smooth and stable relative movement and engagement of the rotating disks within the sleeve.

[0006] In one possible technical design, the rotation center of the second rotating disk is further positioned differently from that of the first rotating disk in space; that is, the rotation axes of the two rotating disks are parallel but not coincident, but their rotation radii are designed to be equal or substantially equal. Under this specific geometric and kinematic relationship, the gripper mechanism, while revolving with the rotating disk, forms a regular, periodic, reciprocating extension and retraction trajectory relative to the fixed sleeve.

[0007] In one possible technical solution, the first and second rotating disks are further arranged eccentrically, with an eccentricity e ranging from 20mm to 30mm. This ensures smooth and unobstructed movement of the rotating disks within the sleeve, while allowing the seedling-grabbing mechanism to achieve sufficient extension and retraction. This allows for stable gripping of the seedlings in the pots to complete the seedling delivery action, and also enables the seedlings to fully exit the seedling channel upon resetting, without obstructing subsequent seedling placement. This design is suitable for the planting specifications of most conventional rice seedlings in pots.

[0008] In one possible technical solution, the slots are further distributed at the corners of adjacent arc edges of the sleeve, and are arranged in a straight line array along the direction of the transmission shaft.

[0009] In one possible technical solution, a transmission hole is further provided at the center of the first rotating disk for assembling the transmission shaft; A through groove is provided on the first rotating disk near each arc edge for assembling the sleeve.

[0010] In one possible technical solution, the sleeve end wall near the first rotating disk is provided with a mounting boss that cooperates with the through groove of the first rotating disk to fix the sleeve relatively to the first rotating disk.

[0011] In one possible technical solution, the connecting rod has a cylindrical boss and a hexagonal boss at both ends, wherein the cylindrical boss is provided with a retaining spring groove to fix the connecting rod by a retaining spring; the hexagonal boss is hinged to the first through hole on the first rotating disk, and the cylindrical boss is hinged to the second through hole on the second rotating disk.

[0012] In one possible technical solution, the derrick is further described as a circular tube with a hexagonal cross-section inside, which is adapted to the hexagonal boss. When different sides of the inner hexagonal hole of the derrick mate with the hexagonal boss of the connecting rod, the horizontal angle of the derrick finger can be adjusted.

[0013] It should be noted that, in this embodiment, the surface of the dipper is provided with multiple threaded holes, and one end of the dipper finger is provided with threads, which cooperate with the threaded holes for installing the dipper finger.

[0014] In one possible technical solution, it further includes: The reinforcing ring, which works with the drive shaft and is fixed relative to the first rotating disk, is used to increase the contact area with the drive shaft and improve rotational stability.

[0015] The continuous rice seedling transplanting device according to the present invention has the following beneficial effects: 1. Through the coordinated operation of the first rotating disk, connecting rod, and second rotating disk, three parallel four-bar linkages, virtually existing in space, are constructed. This ingenious transmission design effectively drives each gripper finger to perform periodic extension and retraction movements. This reciprocating motion precisely achieves continuous grasping and timely release of seedlings, thus forming a stable and uninterrupted material flow throughout the entire conveying path. This mechanism not only ensures smooth operation but also effectively avoids pipe or channel blockages caused by material accumulation. It also solves the problem of seedling entanglement or separation difficulties, greatly improving the reliability and efficiency of the transplanting process.

[0016] 2. Throughout the downward swinging motion of the pulling finger along the preset trajectory, its tilt angle relative to the horizontal plane remains constant due to the special constraints of the mechanism. This constant angle ensures that a parallel, vertically downward pulling force is applied to the seedling. This smooth downward pull avoids unnecessary tearing, compression, or structural damage to the circular root ball attached to the seedling's roots, which protects the root system, due to sudden angle changes or uneven force during seedling removal. An intact root ball is crucial for the subsequent survival of the seedling; therefore, this design significantly reduces damage to the seedling's root system, creating favorable conditions for rapid regrowth and healthy growth after transplanting.

[0017] 3. This device possesses excellent adjustability and adaptability. By manually or mechanically changing the assembly angle between the connecting rod and the drive linkage, the specific working posture of the rake fingers during the operation cycle can be flexibly adjusted. This adjustment function allows the same device to adapt to rice seedlings in pots under different moisture contents. Because seedlings with different moisture contents have varying soil adhesion, weight, and physical properties, adjusting the rake finger posture optimizes the gripping force and method, ensuring efficient, gentle, and reliable seedling picking and transport regardless of whether the seedlings are dry or wet, thus expanding the equipment's application range.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments 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.

[0020] Figure 1 This is an isometric schematic diagram of a continuous rice seedling transplanting device according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the disassembly of the internal rake of a continuous rice seedling transplanting device according to an embodiment of the present invention. Figure 3 This is a cross-sectional schematic diagram of a continuous rice seedling transplanting device according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the connecting rod structure of a continuous rice seedling planting device in a pot according to an embodiment of the present invention; Figure 5This is a schematic diagram of the first rotating disc of a continuous rice seedling planting device according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the operating direction of the finger of a continuous rice seedling planting device in a pot according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the operating trajectory of the finger-pulling device for continuous rice seedling planting in pots according to an embodiment of the present invention.

[0021] Figure label: 100 seedling boxes; Drive shaft 10, first rotating disk 20, first through hole 21, through groove 22, drive hole 23, sleeve 30, mounting boss 31, slot 32, second rotating disk 40, second through hole 41, rotating groove 42, connecting rod 50, cylindrical boss 51, hexagonal boss 52, snap ring groove 53, pull rod 60, pull finger 601, pulley 70, reinforcing ring 80. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, it may include a series of steps or units, or optionally, steps or units not listed, or other steps or units inherent to these processes, methods, products, or devices.

[0026] Example 1 like Figures 1 to 7As shown, this embodiment provides a continuous rice seedling lowering device, installed on a transplanter frame. The transplanter frame is equipped with a seedling box 100. The continuous lowering device includes two oppositely arranged lowering units, fixedly installed directly below the seedling box 100. Each lowering unit includes: Drive shaft 10 is connected to the power source; Two first rotating disks 20 are installed at intervals on the drive shaft 10; A sleeve 30 is installed on two first rotating disks 20, forming a cavity with the first rotating disks 20. Multiple slots 32 are opened on the outer circumferential side of the sleeve 30. Two second rotating disks 40 are located outside the first rotating disk 20, and each second rotating disk 40 has a rotating groove 42 in the middle. Three connecting rods 50 are Z-shaped, with one end connected to the second rotating disk 40 and the other end extending through the first rotating disk 20 into the cavity. Three levers 60 are connected to the end of the connecting rod 50 located in the cavity. Each lever 60 has six fingers 601 that can pass through the rotating groove 42. Three sets of pulleys 70 are installed in a circular array on the transplanter frame. Their centers are on the same axis as the rotation center of the first rotating disk 20, and their circumferences are tangentially fitted with the rotation groove 42 of the second rotating disk 40. When the first rotating disk 20 rotates, the second rotating disk 40 moves synchronously under the support and constraint of the pulleys 70, so that the reamer 601 maintains a constant posture in the cavity and swings back and forth in the circumference to pull the seedlings in the pot parallel out of the seedling box 100. The pulleys 70 are standard parts and are equipped with baffles and threaded rods.

[0027] The reinforcing ring 80 is fitted with the drive shaft 10 and fixed relative to the first rotating disk 20 to increase the contact area with the drive shaft 10 and improve rotational stability.

[0028] When the drive shaft 10 drives the first rotating disk 20 to rotate, since the first rotating disk 20 and the second rotating disk 40 are not concentric and have the same radius of rotation, the grating fingers 601 extend and retract relative to the sleeve 30. When the grating fingers 601 are inside the seedling box 100, they extend to grate the seedlings and pull them down in parallel. When they rotate to the bottom, they retract. At the same time, another set of grating fingers 601 rotates into the seedling box 100 and extends to grate the seedlings, thereby realizing continuous grating and pulling down of the seedlings in the seedling box, forming a stable and continuous quantitative material flow.

[0029] It should be noted that, in this embodiment, the first rotating disk 20 and its corresponding second rotating disk 40 both adopt the special geometric configuration of the Reich triangle in their overall outline shape. Specifically, each rotating disk comprises three protruding apex corners and three smooth, outwardly convex arc edges connecting these apex corners, thus forming its unique outer edge characteristics. Simultaneously, the sleeve, which mates with this, has its internal through-space cross-sectional shape designed to precisely match a Reichstag triangle, thereby ensuring smooth and stable relative movement and engagement of the rotating disks within the sleeve.

[0030] It should be noted that in this embodiment, the rotation center of the second rotating disk 40 and the rotation center of the first rotating disk 20 are not concentric in space; that is, the rotation axes of the two rotating disks are parallel but not coincident, but their rotation radii are designed to be equal or substantially equal. Under this specific geometric and kinematic relationship, the finger mechanism, while revolving with the rotating disk, forms a regular, periodic, reciprocating extension and retraction trajectory relative to the fixed sleeve.

[0031] It should be noted that, in this embodiment, the slots 32 are uniformly arranged in the corner area of ​​the adjacent arc edge of the sleeve 30, and are arranged in a continuous and regular one-line array along the center line of the transmission shaft 10 to ensure the balance and regularity of the structural distribution.

[0032] It should be noted that in the configuration of this embodiment, a transmission hole 23 is provided at the geometric center of the first rotating disk 20. This transmission hole is specifically designed to install and fix the transmission shaft 10 in order to achieve stable operation of the power transmission function.

[0033] Meanwhile, a first through hole 21 is provided in each of the top corner areas of the first rotating disk 20. These through holes are used to accurately install and connect the connecting rod 50, thereby ensuring reliable linkage between the parts.

[0034] In addition, several through slots 22 are sequentially provided at adjacent positions near the edge of each arc on the first rotating disk 20. The structure and size of these through slots are adapted to the sleeve 30 so as to stably and firmly assemble the sleeve 30 into the preset position.

[0035] It is important to emphasize that, in the detailed structural design of this specific embodiment, specific second through holes 41 are precisely formed at each geometric apex position on the second rotating disk 40. The core function and design intent of these second through holes is to accurately and securely assemble the connecting component—i.e., the connecting rod 50—thereby ensuring that the entire transmission mechanism can achieve the predetermined motion trajectory and force transmission.

[0036] It should be further clarified that, in the kinematic model constructed in this embodiment, the radial distance from the center of the first through hole 21 on the first rotating disk 20 to the corresponding second through hole 41 on the second rotating disk 40 to the rotation axis of their respective rotating disks is designed to be exactly equal. This consistency of key dimensions allows multiple (specifically three) virtual, kinematically equivalent parallel four-bar linkages to be formed in space after connecting the corresponding holes with connecting rods. This design ensures that the connection point of the upper and lower rotating disks maintains a specific translational relationship when they move relative to each other, which is the basis for realizing the predetermined motion mode.

[0037] Furthermore, it should be specifically noted that in the assembly relationship of this embodiment, a structural mounting boss 31 is specially provided on the end wall of the sleeve 30 that is close to and faces the first rotating disk 20. The purpose of this mounting boss 31 is to precisely insert and fit with the corresponding through groove 22 machined on the first rotating disk 20. Through this boss-groove fitting mechanism, the sleeve 30 can be effectively constrained and fixed relative to the first rotating disk 20 in the axial and circumferential directions, thereby establishing a stable and reliable relative positional relationship between the two and providing the necessary structural support for the subsequent movement of the overall mechanism.

[0038] It should be clearly pointed out that in the construction of this embodiment, the left and right ends of the connecting rod 50 are designed with protruding structures of different shapes: one end is a cylindrical boss 51, and the other end is a hexagonal boss 52 (or a hexagonal boss). Specifically, a ring-shaped retaining spring groove 53 is machined on the cylindrical surface of the cylindrical boss 51. This retaining spring groove 53 is used to install an elastic retaining spring, and the connecting rod 50 is reliably and stably fixed at this end by the radial tension of the retaining spring. On the other hand, the hexagonal boss 52, with its hexagonal outer contour, cooperates with the first through hole 21 opened on the first rotating disk 20 to form a hinge connection, so that the connecting rod 50 can rotate relative to the first rotating disk 20. At the same time, the cylindrical boss 51, with its cylindrical surface, cooperates with the corresponding second through hole 41 on the second rotating disk 40, also forming a hinge connection, thereby allowing the connecting rod 50 to rotate relative to the second rotating disk 40. Overall, the connecting rod 50 achieves the function of transmitting motion and force between the two rotating disks through the differentiated design of the irregular bosses at both ends and the combination of snap ring fixing and through hole hinge.

[0039] It should be further explained that in this specific implementation, the lever 60 is designed with a cylindrical external structure, while its internal pipe has a unique cross-sectional shape, which is a regular hexagon. This hexagonal inner hole perfectly matches the shape of the hexagonal boss 52 provided at the end of the connecting rod 50, enabling a stable and compatible connection. Crucially, because the inner hexagonal hole of the lever 60 has multiple different edges, when these different inner wall edges mate with the corresponding surfaces of the hexagonal boss 52 on the connecting rod 50, it effectively provides an adjustable mechanical interface for the entire assembly. By selecting different mating surfaces, the operator can flexibly change the circumferential installation position of the lever 60 relative to the connecting rod 50, thereby achieving precise adjustment of the angle of the connected lever finger 601 in the horizontal plane. This design provides multiple preset angle selections, enhancing the adaptability and flexibility of the equipment in practical applications.

[0040] Furthermore, it should be noted that in the same configuration of this embodiment, multiple internally threaded holes are regularly machined on the outer wall of the cylindrical tube of the excavator 60. These threaded holes are distributed at certain intervals along the axial or circumferential direction of the excavator 60. Correspondingly, one end of the excavator finger 601 is machined with an externally threaded structure. During installation, simply screw the threaded end of the excavator finger 601 into the selected threaded hole on the surface of the excavator 60 to securely install the excavator finger 601. This threaded fit not only ensures the mechanical strength of the connection but also makes the installation, disassembly, and replacement of the excavator finger 601 at different positions on the excavator 60 very convenient, facilitating adjustments to the number or layout of the excavator fingers according to operational needs.

[0041] When this device is in operation, the drive shaft 10 rotates under the drive of an external power source such as a motor or tractor power take-off shaft, driving the first rotating disk 20 fixed thereto to rotate synchronously. Since the first rotating disk 20 and the second rotating disk 40 are eccentrically arranged, the eccentricity e ranges from 20mm to 30mm, preferably 30mm in this embodiment. Furthermore, the distances from the first through hole 21 and the second through hole 41 to their respective rotation centers are the same. The three sets of connecting rods 50, together with the first rotating disk 20 and the second rotating disk 40, form three parallel four-bar linkages. The radial distance from the center of the first through hole 21 on the first rotating disk 20 to its own rotation center is equal to the radial distance from the center of the corresponding second through hole 41 on the second rotating disk 40 to its own rotation center. When the first rotating disk 20 rotates, the second rotating disk 40 moves synchronously under the support and constraint of the three pulleys 70, maintaining a constant posture in space for the lever 60 and the lever fingers 601 mounted on it.

[0042] Specifically, when the rake finger 601 rotates to the position of the seedling box 100, it gradually extends relative to the sleeve 30 and inserts into the gap between the seedlings in the pot. As the first rotating disc 20 continues to rotate, the rake finger 601 carries the seedlings downwards and pulls the seedlings out of the seedling box 100 at a fixed angle, preventing the root ball from being torn. When the rake finger 601 rotates to the bottom of the device, it gradually retracts, and the seedlings detach from the rake finger 601 by their own weight or slight external force, falling into the seedling throwing mechanism below or directly into the field. At this time, another set of rake fingers 601 rotates to the position of the seedling box 100 and extends, starting a new round of rake-picking operations.

[0043] By utilizing the alternating extension and continuous rotation of three sets of digging fingers 601, a continuous, stable, and quantitative supply of rice seedlings in pots is achieved, forming a uniform material flow. The horizontal angle of the digging fingers 601 can be adjusted by regulating the mating surface between the hexagonal hole inside the digging rod 60 and the hexagonal boss 52 of the connecting rod 50, to accommodate seedlings in pots with different moisture contents and soil clump conditions, ensuring a high success rate in digging and high-quality operation.

[0044] The continuous rice seedling transplanting device according to the present invention has the following beneficial effects: 1. Through the coordinated operation of the first rotating disk, connecting rod, and second rotating disk, three parallel four-bar linkages, virtually existing in space, are constructed. This ingenious transmission design effectively drives each gripper finger to perform periodic extension and retraction movements. This reciprocating motion precisely achieves continuous grasping and timely release of seedlings, thus forming a stable and uninterrupted material flow throughout the entire conveying path. This mechanism not only ensures smooth operation but also effectively avoids pipe or channel blockages caused by material accumulation. It also solves the problem of seedling entanglement or separation difficulties, greatly improving the reliability and efficiency of the transplanting process.

[0045] 2. Throughout the downward swinging motion of the pulling finger along the preset trajectory, its tilt angle relative to the horizontal plane remains constant due to the special constraints of the mechanism. This constant angle ensures that a parallel, vertically downward pulling force is applied to the seedling. This smooth downward pull avoids unnecessary tearing, compression, or structural damage to the circular root ball attached to the seedling's roots, which protects the root system, due to sudden angle changes or uneven force during seedling removal. An intact root ball is crucial for the subsequent survival of the seedling; therefore, this design significantly reduces damage to the seedling's root system, creating favorable conditions for rapid regrowth and healthy growth after transplanting.

[0046] 3. This device possesses excellent adjustability and adaptability. By manually or mechanically changing the assembly angle between the connecting rod and the drive linkage, the specific working posture of the rake fingers during the operation cycle can be flexibly adjusted. This adjustment function allows the same device to adapt to rice seedlings in pots under different moisture contents. Because seedlings with different moisture contents have varying soil adhesion, weight, and physical properties, adjusting the rake finger posture optimizes the gripping force and method, ensuring efficient, gentle, and reliable seedling picking and transport regardless of whether the seedlings are dry or wet, thus expanding the equipment's application range.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 the invention.

[0048] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0050] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A continuous rice seedling transplanting device, installed on a transplanter frame, wherein the transplanter frame is provided with a seedling box (100), characterized in that, The continuous seedling lowering device includes two seedling lowering units arranged opposite each other, fixedly installed directly below the seedling box (100), wherein each seedling lowering unit includes: Drive shaft (10) is connected to the power source; Two first rotating disks (20) are installed at intervals on the drive shaft (10), wherein a first through hole (21) is provided at each apex corner of the first rotating disk (20). A sleeve (30) is installed on two first rotating disks (20) and forms a cavity with the first rotating disks (20). Multiple slots (32) are opened on the outer wall of the sleeve (30). Two second rotating disks (40) are located outside the first rotating disk (20). A second through hole (41) is provided at each apex of the second rotating disk (40). A rotating groove (42) is provided in the middle of each second rotating disk (40). The first rotating disk (20) and the second rotating disk (40) are not concentrically arranged. The radial distance from the center of the first through hole (21) on the first rotating disk (20) and the second through hole (41) on the second rotating disk (40) to the rotation axis of their respective rotating disks is equal. Multiple connecting rods (50) are arranged in a Z-shape, with one end connected to the second rotating disk (40) and the other end extending through the first rotating disk (20) into the cavity; Multiple levers (60) are connected to the end of a connecting rod (50) located in the cavity. Each lever (60) has multiple lever fingers (601) that can pass through the rotating groove (42). Multiple sets of pulleys (70) are installed in a circular array on the transplanter frame. Their centers are on the same axis as the rotation center of the first rotating disk (20), and their circumferences are tangentially fitted with the rotation groove (42) of the second rotating disk (40). When the first rotating disk (20) rotates, the second rotating disk (40) moves synchronously under the support and constraint of the pulleys (70), so that the raking finger (601) maintains a constant posture in the cavity and swings back and forth in the circumferential direction, pulling the seedlings in the pot out of the seedling box (100) in parallel.

2. The continuous rice seedling transplanting device according to claim 1, characterized in that, The first rotating disk (20) and the second rotating disk (40) are both Reichstag triangles, each containing three vertices and three arc sides; The sleeve (30) has a Reilly triangle cross section.

3. The continuous rice seedling transplanting device according to claim 2, characterized in that, The first rotating disk (20) and the second rotating disk (40) are eccentrically arranged, and the eccentricity e ranges from 20mm to 30mm.

4. The continuous rice seedling transplanting device according to claim 1, characterized in that, The slots (32) are distributed at the corners of adjacent arc edges of the sleeve (30) and are arranged in a straight line along the direction of the drive shaft (10).

5. The continuous rice seedling transplanting device according to claim 3, characterized in that, A transmission hole (23) is provided at the center of the first rotating disk (20); A through groove (22) is provided on the first rotating disk (20) near each arc edge.

6. The continuous rice seedling transplanting device according to claim 5, characterized in that, The sleeve (30) end wall near the first rotating disk (20) is provided with a mounting boss (31), which cooperates with the through groove (22) of the first rotating disk (20) to fix the sleeve (30) relatively on the first rotating disk (20).

7. The continuous rice seedling transplanting device according to claim 1, characterized in that, The connecting rod (50) has a cylindrical boss (51) and a hexagonal boss (52) at its two ends. The hexagonal boss (52) is hinged to the first through hole (21) on the first rotating disk (20), and the cylindrical boss (51) is hinged to the second through hole (41) on the second rotating disk (40).

8. The continuous rice seedling transplanting device according to claim 7, characterized in that, The cylindrical boss (51) has an annular retaining groove (53) on its surface.

9. A continuous rice seedling transplanting device according to claim 7, characterized in that, The derrick (60) is a circular tube with a hexagonal cross-section inside, which is adapted to and connected to the hexagonal boss (52).

10. The continuous rice seedling transplanting device according to claim 1, characterized in that, Also includes: The reinforcing ring (80) is fitted with the drive shaft (10) and fixed relative to the first rotating disk (20).

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