Seedling feeding device, seedling feeding method and rice transplanter comprising seedling feeding device

Abstract

The invention provides a seedling feeding device, a seedling feeding method and a rice transplanter comprising the seedling feeding device.The seedling feeding device comprises two fixing frames fixedly arranged on the two sides of a rice transplanting vehicle and a seedling receiving mechanism adjacent to the rear portions of the fixing frames, and each fixing frame is provided with a bottom-layer conveying belt and an upper-layer conveying belt from bottom to top, the first end of the upper-layer conveying belt is hinged to the fixing frame. The seedling receiving mechanism comprises a seedling receiving conveyor belt with a first end hinged to the seedling transplanting vehicle, a first driving assembly arranged at the bottom of the seedling receiving conveyor belt and a second driving assembly hinged between the second end of the upper conveyor belt and the fixing frame, and the seedling receiving conveyor belt has the same rotating speed as the bottom conveyor belt and the upper conveyor belt. In the implementation mode, the rotating speed of the seedling receiving conveying belt is the same as that of the bottom-layer conveying belt and that of the upper-layer conveying belt, so that when the seedling blocks are received by the seedling receiving conveying belt, the acting force for conveying is the same, the seedling blocks are prevented from being damaged due to extrusion, and the reliability of the seedling feeding device for conveying the seedling blocks is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rice transplanters, and in particular, to a seedling feeding device, a seedling feeding method, and a rice transplanter including the seedling feeding device. Background Art

[0002] As an important tool in modern agriculture, a rice transplanter can not only ensure the quality of rice transplanting, but also greatly improve the operation efficiency, save manpower, and thus reduce the labor cost.

[0003] In related rice transplanters, usually, after the seedling block is transported to the transplanting device, the transplanting work is continuously carried out as the rice transplanter moves. The invention patent with the publication number CN109937656A discloses a high-speed rice transplanter, a high-speed seedling feeding method, and a high-speed rice transplanting method. The seedling feeding part 22 transports the seedling block to the sorting part 223 through the conveying main body 221, and then the sorting part 223 configures the seedling block into the seedling channel 311 of the transplanting device 30.

[0004] The above-mentioned conveying main body 221 is implemented as a conveyor belt, that is, the seedling block is conveyed to the sorting part 223 through the conveyor belt. However, when the front end of the seedling block falls into the sorting part 223, the sorting part 223 will generate a resistance towards the conveyor belt, while the rear end of the seedling block is still conveyed towards the sorting part 223 by the conveyor belt.

[0005] Therefore, the rear end of the seedling block will squeeze the front end of the seedling block, resulting in the seedling block being squeezed, and there is a risk of damaging the structure of the seedling block. If the seedling block is damaged, the distribution of seedlings will be uneven, affecting the quality of the transplanting operation. Summary of the Invention

[0006] The content part of the present invention is used to briefly introduce the concepts, which will be described in detail in the following specific implementation part. The content part of the present disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0007] Some embodiments of the present invention provide a seedling feeding device, a seedling feeding method, and a rice transplanter including the seedling feeding device to solve the technical problems mentioned in the above background art part.

[0008] In a first aspect, some embodiments of the present invention provide a seedling feeding device, including two fixing frames fixed to both sides of the transplanting vehicle and a seedling receiving mechanism adjacent to the rear of the fixing frames. Among them,

[0009] Each fixing frame is provided with a bottom conveyor belt and an upper conveyor belt for transporting the seedling block from bottom to top. The first end of the upper conveyor belt is hinged to the fixing frame;

[0010] The seedling receiving mechanism includes a seedling receiving conveyor belt with its first end hinged to the transplanter, a first driving assembly disposed at the bottom of the seedling receiving conveyor belt, and a second driving assembly hinged between the second end of the upper conveyor belt and the fixed frame. Among them, the seedling receiving conveyor belt has the same rotational speed as the bottom conveyor belt and the upper conveyor belt;

[0011] The first driving assembly is used to drive the seedling receiving conveyor belt to move to be coplanar with any one of the bottom conveyor belts;

[0012] The second driving assembly is used to drive the second end of the upper conveyor belt to tilt to be coplanar with the second end of the flipped seedling receiving conveyor belt.

[0013] Second, some embodiments of the present invention provide a method for the seedling feeding device described in any one of the first aspects, including:

[0014] After the first driving assembly drives the seedling receiving conveyor belt to be coplanar with any one of the bottom conveyor belts, the seedling block transmitted by the bottom conveyor belt is received;

[0015] After the second driving assembly drives the second end of the upper conveyor belt to tilt to be coplanar with the second end of the flipped seedling receiving conveyor belt, the seedling block transmitted by the upper conveyor belt is received;

[0016] During the process of receiving the seedling block, after the seedling block is completely on the seedling receiving conveyor belt, the seedling receiving conveyor belt flips to complete the seedling feeding operation.

[0017] Third, some embodiments of the present invention provide a transplanter, including a transplanter vehicle, a seedling feeding device disposed at the upper end of the transplanter vehicle, and a transplanting assembly disposed at the tail of the transplanter vehicle. Among them, the seedling feeding device is the seedling feeding device described in any one of the first aspects.

[0018] The above embodiments of the present invention have the following beneficial effects: Through the seedling feeding device of the present invention, it is possible to avoid the seedling block being crushed and damaged, improve the reliability of the seedling feeding device for transmitting the seedling block, and ensure the operation quality of transplanting.

[0019] Specifically, the reason for the seedling block being crushed and damaged is that: during the process from the conveyor belt to the sorting part, when the front end of the seedling block falls into the sorting part, the sorting part will generate a resistance towards the conveyor belt, while the rear end of the seedling block is still transmitted towards the sorting part by the conveyor belt, resulting in the seedling block being crushed.

[0020] Based on this, the seedling feeding device according to some embodiments of the present invention realizes the coplanarity of the bottom conveyor belt, the upper conveyor belt and the seedling receiving conveyor belt through the first driving assembly and the second driving assembly, so that the seedling blocks can be transported on a flat working surface. The seedling receiving conveyor belt has the same rotational speed as the bottom conveyor belt and the upper conveyor belt, so that the acting forces for transporting the seedling blocks are the same when the seedling blocks are received by the seedling receiving conveyor belt, thereby avoiding the seedling blocks from being squeezed and damaged, and improving the reliability of the seedling feeding device for transporting the seedling blocks. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of an embodiment of the seedling feeding device of the present invention;

[0023] Figure 2 Structural schematic diagram of an embodiment of the bottom conveyor belt of the present invention for transporting seedling blocks;

[0024] Figure 3 Structural schematic diagram of an embodiment of the seedling receiving conveyor belt after flipping of the present invention;

[0025] Figure 4 Structural schematic diagram of an embodiment of the seedling receiving conveyor belt after moving of the present invention;

[0026] Figure 5 Structural schematic diagram of an embodiment of the upper conveyor belt of the present invention for transporting seedling blocks;

[0027] Figure 6 Side view of an embodiment of the seedling receiving conveyor belt after flipping of the present invention;

[0028] Figure 7 Flowchart of some embodiments of the seedling feeding method according to the present disclosure.

[0029] Explanation of the reference numerals:

[0030] 1, rice transplanter; 2, fixing frame; 3, bottom conveyor belt; 4, upper conveyor belt;

[0031] 5. Seedling receiving mechanism; 51. Seedling receiving conveyor belt; 52. First telescopic rod; 53. Bearing plate; 54. First driving assembly; 541. Lead screw; 542. Lead screw motor; 55. Guide rail; 56. Second driving assembly; 561. Second telescopic rod; 562. Connection frame; 6. Seedling transplanting mechanism; 61. Slideway; 62. Sliding wheel; 63. Seedling transplanting assembly; 7. Seedling block. Detailed implementation manners

[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 thus should not be construed as a limitation of the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] The present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0036] First, please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an embodiment of the seedling feeding device of the present invention. As Figure 1As shown in the figure, the seedling feeding device of the present invention includes two fixing frames 2 fixed to both sides of the driver's seat of the transplanter 1. Each fixing frame 2 is provided with a bottom conveyor belt 3 and an upper conveyor belt 4 from bottom to top. The above-mentioned bottom conveyor belt 3 and upper conveyor belt 4 are used to place the seedling blocks 7 before transplanting.

[0037] The above-mentioned bottom conveyor belt 3 and upper conveyor belt 4 have the same structure. Taking the bottom conveyor belt 3 as an example, it includes a driving wheel, a driven wheel arranged at intervals, and a belt wound around the driving wheel and the driven wheel. The driving wheel is arranged close to the front of the transplanter 1, and the driven wheel is arranged away from the front of the transplanter 1. Further, the diameter of the above-mentioned driving wheel can be larger than that of the driven wheel. In this way, the contact area between the driving wheel and the belt is larger, the friction is increased, and thus a more stable torque output can be provided.

[0038] At the upper end of the transplanter 1 near the right side of the fixing frame 2 ( Figure 1 in the direction shown in the figure), a seedling receiving mechanism 5 is provided. The seedling receiving mechanism 5 is used to receive the seedling blocks 7 transmitted by the bottom conveyor belt 3 and the upper conveyor belt 4, and transmit the seedling blocks 7 to the transplanting mechanism 6 arranged at the rear of the transplanter 1.

[0039] Please refer to Figure 2 and Figure 3 , Figure 2 is a schematic structural diagram of an embodiment of the bottom conveyor belt of the present invention for transmitting seedling blocks; Figure 3 is a schematic structural diagram of an embodiment after the seedling receiving conveyor belt is turned over. As Figure 2 and Figure 3 shown, the above-mentioned seedling receiving mechanism 5 may include a seedling receiving conveyor belt 51, a first telescopic rod 52, a bearing plate 53, and a first driving component 54. The first end ( Figure 3 the right end in the figure) of the seedling receiving conveyor belt 51 is hinged to the bearing plate 53. Both ends of the first telescopic rod 52 are hinged between the seedling receiving conveyor belt 51 and the bearing plate 53. The first driving component 54 is arranged at the bottom of the bearing plate 53 and is used to drive the seedling receiving conveyor belt 51 to move along the width direction of the transplanter 1, so as to dock with any bottom conveyor belt 3.

[0040] The driving wheel of the above-mentioned seedling receiving conveyor belt 51 can also be the same as the bottom conveyor belt 3 and the upper conveyor belt 4, with a diameter larger than that of the driven wheel, so that the contact area between the driving wheel and the belt is larger, the friction is increased, and thus a more stable torque output can be provided.

[0041] As Figure 2 shown, during the process of the seedling receiving conveyor belt 51 receiving the seedling block 7, the above-mentioned first telescopic rod 52 drives the seedling receiving conveyor belt 51 to rotate around the hinge axis, so that the second end of the seedling receiving conveyor belt 51 ( Figure 2The left end of the receiving seedling conveyor belt 51 is coplanar with the bottom conveyor belt 3. In addition, the rotational speed of the receiving seedling conveyor belt 51 can be the same as that of the bottom conveyor belt 3. In this way, when the front end of the seedling block 7 is received by the receiving seedling conveyor belt 51, the receiving seedling conveyor belt 51 will drive the seedling block 7 to move at the same speed as the bottom conveyor belt 3, which can avoid the seedling block 7 from being squeezed and damaged, and improve the reliability of the seedling feeding device for transporting the seedling block 7.

[0042] Furthermore, the driven wheel of the receiving seedling conveyor belt 51 can be arranged at the second end of the receiving seedling conveyor belt 51, and the driven wheel of the bottom conveyor belt 3 can be arranged at the second end of the bottom conveyor belt 3. When the receiving seedling conveyor belt 51 and the bottom conveyor belt 3 are coplanar, due to the smaller diameter of the driven wheel, the transition gap can be made smaller. In this way, it can be avoided that when the seedling block 7 passes through the above-mentioned transition gap, due to the too large transition gap, the seedling block 7 sags due to its own weight, resulting in a change in the pulling direction at both ends (forming an angle), and the tension in the horizontal direction is decomposed, and the overall structure of the seedling block 7 becomes loose due to insufficient tension.

[0043] As Figure 3 shown, when the seedling block 7 is completely received by the receiving seedling conveyor belt 51, the first telescopic rod 52 extends, causing the receiving seedling conveyor belt 51 to rotate clockwise ([ Figure 3 the direction in

[0044] Please refer to Figure 4 、 Figure 5 and Figure 6 , Figure 4 which is a schematic structural diagram of an embodiment after the receiving seedling conveyor belt of the present invention moves; Figure 5 which is a schematic structural diagram of an embodiment of the upper conveyor belt of the present invention for transporting the seedling block; Figure 6 which is a side view of an embodiment after the receiving seedling conveyor belt of the present invention is turned over. As Figure 4 and Figure 5 shown, when all the seedling blocks 7 on the bottom conveyor belt 3 on the left side ([ Figure 4 the direction in

[0045] As Figure 5As shown in the figure, the above-mentioned first driving assembly 54 includes a lead screw motor 542 and a lead screw 541 which are connected to each other. The above-mentioned lead screw 541 is arranged along the width direction of the transplanter 1 at the bottom of the bearing plate 53. A lead screw nut can be sleeved on the above-mentioned lead screw 541, and this lead screw nut is fixedly connected to the bottom of the bearing plate 53. In the working state, the above-mentioned lead screw motor 542 drives the lead screw 541 to rotate, so that the lead screw nut drives the seedling receiving conveyor belt 51 to move along the axial direction of the lead screw 541 until it is butted against the bottom conveyor belt 3 on the right side.

[0046] Furthermore, guide grooves are fixedly arranged at both ends of the bottom of the bearing plate 53 along the width direction of the transplanter 1. Correspondingly, two guide rails 55 are fixedly arranged on the transplanter 1. In the assembled state, the two guide grooves and the two guide rails 55 are in one-to-one correspondence and cooperation. In this way, the bearing plate 53 can move along the guide rail 55, thereby restricting the moving direction of the seedling receiving conveyor belt 51 and improving the reliability of the seedling feeding device.

[0047] After the seedling blocks 7 on both bottom conveyor belts 3 are all received, the seedling receiving conveyor belt 51 continues to convey the seedling blocks 7 placed on the upper conveyor belt 4. Next, an example will be given to illustrate the seedling block 7 on the left upper conveyor belt 4 during the conveyance. Figure 5 As shown in the figure Figure 5 A second driving assembly 56 can also be arranged on one side of each fixing frame 2 facing the seedling receiving conveyor belt 51 ( Figure 5 the right side in the figure), including a second telescopic rod 561 and a connecting frame 562. The upper end of the above-mentioned second telescopic rod 561 is hinged to the upper end of the fixing frame 2, the lower end of the second telescopic rod 561 is connected to the connecting frame 562, the above-mentioned connecting frame 562 is hinged to the second end of the upper conveyor belt 4 ( Figure 5 the right end in the figure), and the first end of the upper conveyor belt 4 ( Figure 5 the left end in the figure) is also hinged to the fixing frame 2.

[0048] As shown in the figure Figures 4 to 6 After the lead screw 541 drives the seedling receiving conveyor belt 51 to be aligned with the bottom conveyor belt 3, the first telescopic rod 52 drives the seedling receiving conveyor belt 51 to rotate clockwise around the hinge axis. At the same time, the second telescopic rod 561 extends, so that the upper conveyor belt 4 rotates clockwise around the hinge axis until the second end of the seedling receiving conveyor belt 51 ( Figure 5 the left end in the figure) and the second end of the upper conveyor belt 4 ( Figure 5 the right end in the figure) are coplanar, and then the upper conveyor belt 4 and the seedling receiving conveyor belt 51 operate at the same speed, so that the seedling block 7 will not be squeezed during the process of being received by the seedling receiving conveyor belt 51.

[0049] Similarly, the driven wheel of the upper conveyor belt 4 can be arranged at the second end of the upper conveyor belt 4. After the seedling receiving conveyor belt 51 is coplanar with the upper conveyor belt 4, due to the smaller diameter of the driven wheel, the transition gap can be made smaller. In this way, it is possible to prevent the overall structure of the seedling block 7 from becoming loose due to insufficient tension when the seedling block 7 passes through the above-mentioned transition gap.

[0050] The first telescopic rod 52 and the second telescopic rod 561 drive the seedling receiving conveyor belt 51 and the upper conveyor belt 4 to rotate respectively. While improving the docking efficiency, it can also prevent the upper conveyor belt 4 after rotation from interfering with the bottom conveyor belt 3, improving the reliability of the seedling loading device.

[0051] As Figure 6 shown, when the seedling receiving conveyor belt 51 completely receives the seedling block 7, the first telescopic rod 52 continues to extend, causing the seedling block 7 to slide into the transplanting mechanism 6. Next, the first telescopic rod 52 retracts again, so that after the seedling receiving conveyor belt 51 is coplanar with the upper conveyor belt 4, the next seedling block 7 is received until all the seedling blocks 7 on the upper conveyor belt 4 are transferred to the transplanting mechanism.

[0052] Finally, driven by the lead screw 541, the seedling receiving conveyor belt 51 receives the seedling blocks 7 on the upper conveyor belt 4 on the right side. After all the seedling blocks 7 have completed the transplanting operation, the staff can place the seedling blocks 7 on the bottom conveyor belt 3 and the upper conveyor belt 4 again for subsequent transplanting work.

[0053] The present application also provides a seedling loading method, which can be used for the seedling loading device in the above-mentioned various embodiments. As Figure 7 shown, it shows a flowchart 700 of an embodiment of the seedling loading method provided by the present invention. The method may include the following steps:

[0054] Step 701, after the first driving component drives the seedling receiving conveyor belt to be coplanar with any one of the bottom conveyor belts, receive the seedling blocks transmitted by the bottom conveyor belt.

[0055] In some embodiments, the execution subject of the method may be a control terminal communicatively connected to the bottom conveyor belt, the upper conveyor belt, the seedling receiving mechanism, the first driving component, and the second driving component. The control terminal may be an MCU (Microcontroller Unit), a PLC (Programmable Logic Controller), a DSP (Digital Signal Processor), etc. Those skilled in the art can select according to the actual situation.

[0056] During the process of receiving the seedling blocks conveyed by the bottom conveyor belt through the seedling receiving mechanism, the lead screw of the first driving assembly can drive the seedling receiving conveyor belt to move along the axial direction of the lead screw, and can be docked with any bottom conveyor belt.

[0057] The first telescopic rod drives the seedling receiving conveyor belt to rotate around the hinge axis, enabling the seedling receiving conveyor belt to be coplanar with the bottom conveyor belt.

[0058] Next, the control terminal controls the seedling receiving conveyor belt and the bottom conveyor belt to rotate at the same speed. In this way, when the front end of the seedling block is received by the seedling receiving conveyor belt, the seedling receiving conveyor belt will drive the seedling block to move at the same speed as the bottom conveyor belt, which can prevent the seedling block from being squeezed and damaged, and improve the reliability of the seedling feeding device for transporting the seedling blocks.

[0059] Step 702, after the second driving assembly drives the second end of the upper conveyor belt to be inclined to be coplanar with the second end of the flipped seedling receiving conveyor belt, receive the seedling blocks conveyed by the upper conveyor belt;

[0060] In some embodiments, during the process of receiving the seedling blocks conveyed by the upper conveyor belt through the seedling receiving mechanism, when the lead screw drives the seedling receiving conveyor belt to be aligned with the bottom conveyor belt, the first telescopic rod drives the seedling receiving conveyor belt to rotate around the hinge axis. At the same time, the second telescopic rod extends, causing the upper conveyor belt to rotate around the hinge axis until the seedling receiving conveyor belt and the upper conveyor belt are coplanar, and then the upper conveyor belt and the seedling receiving conveyor belt operate at the same speed, so that the seedling blocks will not be squeezed during the process of being received by the seedling receiving conveyor belt.

[0061] It should be noted that the seedling receiving conveyor belt can first receive the seedling blocks of the two bottom conveyor belts, and then receive the seedling blocks of the two upper conveyor belts. Of course, it can also first receive the seedling blocks of the two upper conveyor belts, and then receive the seedling blocks of the two bottom conveyor belts, or the seedling receiving conveyor belt can receive the seedling blocks of the bottom conveyor belt and the upper conveyor belt alternately. Those skilled in the art can adjust according to the actual situation.

[0062] Step 703, during the process of receiving the seedling blocks, after the seedling blocks are completely on the seedling receiving conveyor belt, the seedling receiving conveyor belt flips to complete the seedling feeding operation.

[0063] In some embodiments, whether receiving the seedling blocks of the upper conveyor belt or the seedling blocks of the two bottom conveyor belts, when the seedling blocks are completely on the seedling receiving conveyor belt, the first telescopic rod extends, causing the seedling receiving conveyor belt to flip, thereby transporting the seedling blocks to the rear transplanting mechanism.

[0064] Refer back to Figure 1 , the present invention also provides a high-speed transplanter, including a transplanter vehicle 1, a seedling feeding device, and a transplanting mechanism 6. The above seedling feeding device is installed on the transplanter vehicle 1, and the transplanting mechanism 6 is installed at the rear of the transplanter vehicle 1. The seedling feeding device is the seedling feeding device described in the above embodiments.

[0065] The above-mentioned rice transplanting mechanism 6 includes a plurality of inclined chutes 61. A plurality of rotatable sliding wheels 62 are arranged at the upper end of each chute to reduce the friction of the seedling block 7 during transmission. A rice transplanting assembly 63 is arranged at the lower end of each chute 61.

[0066] In the working state, after the seedling receiving conveyor belt 51 of the upper seedling device receives the seedling block 7, the lead screw 541 can drive the seedling receiving conveyor belt 51 to align with any one of the chutes 61. Next, the first telescopic rod 52 extends, so that the seedling receiving conveyor belt 51 is flipped to an angle coplanar with the chute 61. Then the seedling receiving conveyor belt 51 moves the seedling block 7 to the chute 61, and finally the rice transplanting operation is completed by the rice transplanting assembly 63.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seedling feeding device, characterized in that, Comprising two fixing frames fixedly arranged on both sides of the rice transplanter and a seedling receiving mechanism closely behind the fixing frames, wherein, Each fixing frame is provided with a bottom conveyor belt and an upper conveyor belt for transporting seedling blocks from bottom to top, and the first end of the upper conveyor belt is hinged to the fixing frame; The seedling receiving mechanism includes a seedling receiving conveyor belt with its first end hinged to the rice transplanter, a first driving assembly arranged at the bottom of the seedling receiving conveyor belt, and a second driving assembly hinged between the second end of the upper conveyor belt and the fixing frame. Among them, the seedling receiving conveyor belt has the same rotation speed as the bottom conveyor belt and the upper conveyor belt; The first driving assembly is used to drive the seedling receiving conveyor belt to move to be coplanar with any one of the bottom conveyor belts; The second driving assembly is used to drive the second end of the upper conveyor belt to be inclined to be coplanar with the second end of the flipped seedling receiving conveyor belt.

2. The seedling feeding device according to claim 1, wherein, The seedling receiving mechanism further includes a first telescopic rod and a bearing plate. The bottom of the bearing plate is connected to the first driving assembly. The two ends of the first telescopic rod are hinged between the seedling receiving conveyor belt and the bearing plate, and the first end of the seedling receiving conveyor belt is hinged to the bearing plate.

3. The upper seedling device according to claim 2, characterized in that, The first driving assembly includes a lead screw motor and a lead screw connected to each other. The lead screw is rotatably arranged along the width direction of the rice transplanter, and the bearing plate is fixedly connected to the lead screw nut sleeved on the lead screw.

4. The upper seedling device according to claim 3, characterized in that, Guide grooves are fixedly provided at the front and rear ends of the bottom of the bearing plate along the width direction of the rice transplanter.

5. The upper seedling device according to claim 4, characterized in that, Guide rails corresponding to the two guide grooves are arranged on the rice transplanter. In the assembled state, the two guide grooves are slidably connected to the two guide rails.

6. The upper seedling device according to claim 1, characterized in that, The second driving assembly includes a second telescopic rod. The two ends of the second telescopic rod are respectively hinged to the fixing frame and the second end of the upper conveyor belt.

7. The seedling feeding device according to claim 6, wherein, A connecting frame is connected to the lower end of the second telescopic rod, and the connecting frame is hinged to the second end of the upper conveyor belt.

8. The seedling feeding device according to claim 1, characterized in that The diameters of the driving wheels of the bottom conveyor belt, the upper conveyor belt, and the seedling receiving conveyor belt are larger than those of the driven wheels, and the driven wheels of the bottom conveyor belt and the upper conveyor belt are arranged opposite to the driven wheels of the seedling receiving conveyor belt.

9. A method for the seedling feeding device as described in any one of claims 1-8, the method comprising: After the first driving assembly drives the seedling receiving conveyor belt to be coplanar with any one of the bottom conveyor belts, receiving the seedling blocks transported by the bottom conveyor belt; After the second driving assembly drives the second end of the upper conveyor belt to be inclined to be coplanar with the second end of the flipped seedling receiving conveyor belt, receiving the seedling blocks transported by the upper conveyor belt; During the process of receiving the seedling blocks, after the seedling blocks are completely on the seedling receiving conveyor belt, the seedling receiving conveyor belt flips to complete the seedling feeding operation.

10. A transplanter, characterized in that, Comprising a rice transplanter, a rice transplanting assembly arranged at the upper end of the rice transplanter, and a rice transplanting assembly arranged at the tail of the rice transplanter, wherein, the seedling feeding device is the seedling feeding device as described in any one of claims 1-8.

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