Seedling filling device and method for sweet potato transplanter

Abstract

The invention relates to the technical field of sweet potato transplanters, in particular to a sweet potato transplanter seedling supplementing device and method, the device comprises a transplanter frame, a frame arranged on the transplanter frame, a supplementing seedling taking clamp arranged on the frame, and a seedling feeding device arranged at the tail part of the frame. According to the sweet potato complementary planting device, complementary planting can be carried out when missing planting is monitored through the seedling feeding device, firstly, the multiple seedling placing plates can be sequentially arranged on the supporting plate through the bayonets, the complementary planting seedling taking clamps can clamp sweet potato seedlings on the seedling placing plates at the corresponding positions for complementary planting, the clamped vacant seedling placing plates can automatically fall down after the telescopic plates retract, and after the telescopic plates reset, the sweet potato seedlings can be automatically planted. The pushing sliding block is driven by the lead screw motor to move, new seedling placing plates loaded with sweet potato seedlings are supplemented to the telescopic plate through the multiple seedling placing plates of the pushing plate so as to be picked up next time, and therefore the purpose of conducting automatic complementary planting treatment on sweet potato seedling missing planting is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sweet potato transplanters, and particularly relates to a seedling replenishing device and method for a sweet potato transplanter. Background Art

[0002] With the development of sweet potato transplanter technology in recent years, sweet potato transplanters can already achieve functions such as ditching, seedling placing, and soil covering. However, in actual operations, there are still problems such as missed planting and seedling damage. Moreover, the seedling replenishing link still requires manual intervention. It is difficult to detect missed planting during the operation of the sweet potato transplanter, and it is time-consuming and laborious for manual detection and replanting, which limits the further improvement of sweet potato yield and planting efficiency. Therefore, it is necessary to propose a device that can monitor the missed planting situation during the operation of the sweet potato transplanter and replenish seedlings in a timely manner. Summary of the Invention

[0003] The purpose of the present invention is to provide a seedling replenishing device and method for a sweet potato transplanter. When a missed planting is detected, the seedling replenishing can be carried out through the seedling feeding device. First, a plurality of seedling placing plates can be sequentially arranged on the support plate through the bayonet. The seedling picking clip for replanting can pick up the sweet potato seedlings on the corresponding seedling placing plate for replanting. After the picked seedling placing plate is emptied, it can automatically fall after the telescopic plate retracts. After the telescopic plate resets, the propulsion slider is driven to move by the lead screw motor, and a plurality of seedling placing plates are pushed by the push plate to supplement a new seedling placing plate carrying sweet potato seedlings onto the telescopic plate for the next picking, so as to achieve the purpose of automatically replenishing and treating missed planting of sweet potato seedlings. The seedling picking plate can also be automatically replenished and updated, and the emptied seedling placing plate can automatically fall into the collection box for recycling.

[0004] To achieve the above purpose, the present invention provides a seedling replenishing device for a sweet potato transplanter, which includes a transplanter frame, a frame provided on the transplanter frame, and a seedling picking clip for replanting provided on the frame. It also includes a seedling feeding device installed at the tail of the frame. The seedling feeding device includes:

[0005] A lead screw module, including a lead screw motor installed on the frame and a propulsion slider that can be driven by the lead screw motor. A push plate is connected to the propulsion slider;

[0006] A carrier plate frame, which is provided above the lead screw module;

[0007] A support plate, which can be placed on the carrier plate frame; bayonets are formed on both sides of the support plate; a plurality of seedling placing plates are moved into and arranged in sequence along the bayonets on the support plate. Openings are formed on both the carrier plate frame and the support plate;

[0008] A collection box, which is provided below one end of the support plate away from the lead screw motor;

[0009] The telescopic plate is provided below the carrier plate frame. The telescopic plate can be driven by an electric push rod to move between a first position and a second position. When the propulsion slider is driven to move by the lead screw motor, the push plate pushes a plurality of seedling plates arranged on the pallet along the opening, and the outermost seedling plate is placed on the telescopic plate extended to the first position. At this time, the outermost seedling plate can be clamped by the replanting seedling clamp to pick up sweet potato seedlings. After the telescopic plate retracts from the first position to the second position, the outermost empty seedling plate loses support and falls into the collection box.

[0010] Preferably, the frame is fastened to the rear of the vehicle frame by U-bolts.

[0011] Preferably, it further includes:

[0012] A slide rail is fixed on the frame, and a moving slider is arranged on the slide rail;

[0013] A support frame is arranged on the moving slider; the replanting seedling clamp is arranged on the side of the support frame, and a driving motor is further arranged on the support frame. The driving motor is used to drive the replanting seedling clamp to clamp and plant seedlings; the moving slider can move along the slide rail to adjust the position of the replanting seedling clamp.

[0014] Preferably, the lead screw module further includes:

[0015] A lead screw support, the output end of the lead screw motor is connected to the lead screw through the lead screw support, and the propulsion slider is arranged on the lead screw; the carrier plate frame is fixed on the lead screw support.

[0016] Preferably, the electric push rod is installed below the carrier plate frame, and a card slot is further arranged below the carrier plate frame. Both sides of the telescopic plate are located in the card slot so that the telescopic plate can move along a preset path between the first position and the second position.

[0017] Preferably, the telescopic rod is a "concave"-shaped mechanism that is concave toward the lead screw module.

[0018] Preferably, it further includes:

[0019] A placement rack is fixed on the carrier plate frame, and the collection box is placed in the placement rack.

[0020] Preferably, it further includes:

[0021] A high-speed camera is arranged on the transplanting machine frame in front of the replanting seedling clamp, and is used to collect image information on whether the transplanting machine seedling clamp successfully clamps sweet potato seedlings;

[0022] A total control box is arranged on the transplanting machine frame. The total control box is configured to judge whether the transplanting machine seedling clamp has missed planting according to the image information; if it is judged that there is a missed planting, a replanting instruction is issued.

[0023] The present invention also provides a seedling supplementing method for a seedling supplementing device of a sweet potato transplanter, which is carried out based on the seedling supplementing device of the sweet potato transplanter. The seedling supplementing method includes:

[0024] Step S1: Place a plurality of seedling plates carrying sweet potato seedlings on the tray in sequence along the bayonet of the tray.

[0025] Step S2: The frame of the transplanter is towed and started, and during the transplanting process, it is monitored in real time whether the seedling clamping device of the transplanter successfully picks up seedlings.

[0026] Step S3: If it is not monitored that the seedling picking fails, the transplanter continues to move forward and the seedling supplementing device does not operate; if it is monitored that the seedling picking fails, a replanting instruction is issued.

[0027] Step S4: In response to the replanting instruction, the replanting seedling clamping device clamps the sweet potato seedlings on the outermost seedling plate for replanting; the telescopic plate retracts from the first position to the second position, and the outermost empty seedling plate falls into the collection box. Subsequently, the telescopic plate extends and resets to the first position, and the propulsion slider pushes a plurality of seedling plates to place the new outermost seedling plate carrying sweet potato seedlings on the telescopic plate in the first position.

[0028] Preferably, the replanting seedling clamping device can move on the frame, and during the transplanting process, it is monitored in real time whether the seedling clamping devices of the transplanter at at least two positions successfully pick up seedlings.

[0029] The seedling supplementing method further includes:

[0030] If it is monitored that the seedling clamping device of the transplanter at one of the positions fails to pick up seedlings, the replanting seedling clamping device can move along the frame to this position and clamp the sweet potato seedlings on the corresponding seedling plate for replanting.

[0031] If all the sweet potato seedlings on the seedling plates on the tray have been replanted, a beeping signal is sent out in the main control box, and after replacing a tray full of sweet potato seedlings, the work continues.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The seedling-replenishing device and method for a sweet potato transplanter of the present invention can be used for a sweet potato transplanter with two rows in one ridge or a single row in one ridge, can quickly detect the planting situation of the sweet potato seedlings of the transplanter during field operation, and link the seedling-replenishing device at the rear of the transplanter to quickly and accurately deliver the seedlings and replant, thereby solving the problem that it is difficult to manually find the missed seedlings and perform the replanting operation in time during the operation of the machine, and providing help for improving the sweet potato yield; the seedling-replenishing device and method adopted by the present invention have a high degree of automation, and only need to arrange and place the seedling-releasing plate with the sweet potato seedlings fixed in advance along the bayonet of the supporting plate, and the placed supporting plate is placed on the carrier frame, and the seedling-replenishing device that receives the replanting instruction will automatically complete the replanting operation of the sweet potato seedlings, and after the sweet potato seedlings on the subsequent supporting plate are replanted, only need to replace the supporting plate fully loaded with sweet potato seedlings, thereby solving the problem of time-consuming and labor-intensive manual replanting of the sweet potato seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 is a cross-sectional view of the present invention;

[0036] Figure 3 It is a partial structural diagram of the present invention;

[0037] Figure 4 It is a schematic diagram of local parts of the present invention;

[0038] Figure 5 It is another partial parts schematic diagram of the present invention;

[0039] Numbers in the figure: 1. Transplanting machine frame; 2. Frame; 3. Slide rail; 4. Screw motor; 5. Support plate; 6. Moving slider; 7. Driving motor; 8. Replanting seedling clamp; 9. Seedling placing plate; 10. Plate carrier; 11. Electric push rod; 12. Collection frame; 13. Placement rack; 14. High-speed camera; 15. Main control box; 16. Seedling clamp; 17. Push slider; 18. Telescopic plate; 19. Support frame; 20. Baffle; 21. Bayonet; 22. Screw support; 23. Slot. DETAILED DESCRIPTION

[0040] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. 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, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled" 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 directly connected or indirectly connected 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 through specific circumstances.

[0041] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0042] Embodiment 1

[0043] From Figure 1 In this embodiment, a seedling supplementing device for a sweet potato transplanter is provided, which includes a frame 2 provided on the transplanter frame 1 and a seedling supplementing and picking clamp 8 provided on the frame 2. It further includes a seedling feeding device installed at the tail of the frame 2. The seedling feeding device includes a lead screw module, a carrier plate frame 10, a support plate 5, a collection box 12, and a telescopic plate 18. The lead screw module includes a lead screw motor 4 installed on the frame 2 and a propulsion slider 17 that can be driven by the lead screw motor 4. A push plate is connected to the propulsion slider 17. The carrier plate frame 10 is provided above the lead screw module. The support plate 5 can be placed on the carrier plate frame 10. Clasps 21 are formed on both sides of the support plate 5. A plurality of seedling placing plates 9 are moved into the clasps 21 and placed on the support plate 5 in sequence. Openings are formed on both the carrier plate frame 10 and the support plate 5. The collection box 12 is provided below one end of the support plate 5 away from the lead screw motor 4. The telescopic plate 18 is provided below the carrier plate frame 10, and the telescopic plate 18 can be driven by an electric push rod 11 to move between a first position and a second position.

[0044] When the propulsion slider 17 is driven by the lead screw motor 4 to move, the push plate pushes a plurality of seedling plates 9 arranged on the support plate 5 along the opening, and the outermost seedling plate 9 is located on the telescopic plate 18 in the first position. The telescopic plate 18 extends, and at this time, the outermost seedling plate 9 can be clamped by the replanting seedling clamping clip 8 to pick up sweet potato seedlings. After the telescopic plate 18 moves from the first position to the second position and the telescopic plate 18 retracts, the outermost empty seedling plate 9 loses support and falls into the collection box 12. When this embodiment is actually used, it can replant for the missed planting situation through the replanting seedling clamping clip 8, and the empty seedling plate 9 clamped by the replanting seedling clamping clip 8 can automatically fall and be recycled by controlling the telescopic plate 18 to retract to the second position. After the telescopic plate 18 extends and resets to the first position, driven by the lead screw motor 4, the propulsion slider 17 drives a plurality of seedling plates 9 through the push plate to push the new seedling plates 9 carrying sweet potato seedlings to the telescopic plate 18 that extends to the first position for the replanting seedling clamping clip 8 to pick up again, so as to realize the automatic replanting operation for the missed planting situation.

[0045] Specifically, the seedling replanting device of this embodiment includes a missed seedling detection device, a planting device, a seedling feeding device and a control system fixedly installed on the vehicle frame 1. The vehicle frame 1 provides necessary fixed support for the missed seedling detection device, the planting device, the seedling feeding device and the control system. The frame 1 is fastened to the rear of the vehicle frame 1 by U-shaped bolts; the missed seedling detection device includes a high-speed camera 14 and a main control box 15. The two high-speed cameras 14 are respectively fixed at the front end of the vehicle frame, and the camera parts are aligned with the seedling clamping clips 16 of the transplanter, and are respectively used to detect the image information of the sweet potato seedlings clamped by the left and right seedling clamping clips 16 of the transplanter, and transmit the captured image information to the CPU in the main control box 15 on the right side of the vehicle frame to identify whether the seedling clamping clip 16 has successfully planted sweet potato seedlings.

[0046] The planting device includes a slide rail 3 on the frame 1, a moving slider 6 arranged on the slide rail, a support frame arranged on the moving slider 6, a driving motor 7 and a replanting seedling clamping clip 8 arranged on the support frame. The moving slider 3 slides in the slide rail 3 according to the instruction issued by the PLC in the main control box 15. A support frame 19 is fixed on the moving slider 6, and the support frame provides support for the driving motor 7 and the replanting seedling clamping clip 8. The moving slider 3 can move along the slide rail 3 to adjust the position of the replanting seedling clamping clip 8. In a specific embodiment, the replanting seedling clamping clip 8 is a crank-rocker mechanism, and the PLC sends different pulse signals to the driving motor 7 to make the driving motor 7 rotate different numbers of turns to control the seedling clamping and planting of the replanting seedling clamping clip 8.

[0047] The seedling feeding device includes a lead screw motor 4 fixed above the tail of the frame 1, a lead screw support 22, a carrier plate frame 10, a support plate 5, a propulsion slider 17, an electric push rod 11 and a telescopic plate 18. The output end of the lead screw motor 4 is connected to a lead screw through the lead screw support 22, and the propulsion slider 17 is arranged on the lead screw; the carrier plate frame 10 is fixed on the lead screw support 22. Below the carrier plate frame 10 is a collection frame 12 for collecting the empty seedling placing plates 9. There are clamping openings 21 on the support plate 5, and the clamping openings are used to fix the seedling placing plates 9, so that when the replanting seedling clamping clip 8 clamps the sweet potato seedlings from the seedling placing plate 9, the seedling placing plate 9 will not be driven to move; an opening is formed in the middle of the support plate 5 for the propulsion slider 17 to move. An electric push rod 11 and a clamping groove 23 are fixed below the carrier plate frame 10. The telescopic plate 18 is controlled by the electric push rod 11 to expand and contract along a preset path in the clamping groove 23, so as to move under the condition that the telescopic plate extends to support the seedling placing plate at the first position and the telescopic plate retracts to make the empty seedling placing plate fall at the second position.

[0048] A placing rack 13 is fixed below the carrier plate frame 10. The placing rack provides support for the collection frame 12, and the collection frame 12 is used to collect the seedling placing plates 9 from which the sweet potato seedlings have been clamped. During operation, the seedling placing plate 9 with the sweet potato seedlings fixed is arranged and placed along the clamping openings 21 of the support plate 5 from the position of the baffle 20 on the support plate 5 to the tail end. After the driving motor 7 receiving the replanting instruction drives the replanting seedling clamping clip 8 to perform a crank-rocker motion to clamp the sweet potato seedlings from the seedling placing plate 9, the seedling placing plate 9 at the tail end is in an empty state. The electric push rod 11 at the bottom of the carrier plate frame 10 completes a telescopic plate 18 retracting and extending action through the instruction of the PLC in the total control box 15. When the telescopic plate 18 retracts, the empty seedling placing plate 9 falls into the collection frame 12 under the action of gravity, and then the telescopic plate 18 extends. The lead screw motor 4 drives the propulsion slider 17 to move forward to push the seedling placing plate forward, and a seedling placing plate 9 with sweet potato seedlings fixed appears above the telescopic plate 18, which is convenient for replanting operation when the next replanting instruction is issued.

[0049] The telescopic plate 18 in this embodiment is a "concave"-shaped mechanism. This structure is to prevent the lead screw support 22 from blocking the telescopic plate 18 when the electric push rod 11 drives the telescopic plate 18 to retract, resulting in the telescopic plate 18 being unable to retract. The collection frame 12 can collect the seedling placing plates 9 for recycling and reuse for placing sweet potato seedlings again.

[0050] The control system is the CPU processor and the PLC controller in the total control box 15. The CPU processor is connected to the seedling leakage detection device and the PLC controller through connecting wires. The CPU processor will identify and process the seedling clamping information of the seedling clamping clip of the transplanter photographed by the high-speed camera 14, and transmit the seedling leakage information of the seedling clamping clip to the PLC controller. The PLC controller is connected to the planting device and the seedling feeding device through connecting wires. After receiving the seedling leakage information transmitted by the CPU processor, the PLC controller controls the slider 6, the driving motor 7 and the lead screw motor 4 to perform different actions respectively to realize the replanting operation of the transplanter.

[0051] Specifically described in combination with the actual working steps, the working steps of the seedling supplementing device of the sweet potato transplanter in this embodiment are as follows: First, a plurality of seedling placing plates 9 carrying sweet potato seedlings are sequentially arranged and placed on the support plate 5 along the bayonet 21 of the support plate 5; the transplanter frame 1 is towed and started, and during the transplanting process, it is monitored in real time whether the seedling clamping clip 16 of the transplanter successfully picks up seedlings; if no seedling picking failure is detected, the transplanter continues to move forward and the seedling supplementing device does not act; if a seedling picking failure is detected, a replanting instruction is issued; in response to the replanting instruction, the replanting seedling clamping clip 8 clamps the sweet potato seedlings on the outermost seedling placing plate 9 for replanting; the telescopic plate 18 moves from the first position to the second position and retracts, and the outermost empty seedling placing plate 9 falls into the collection box 12, and then the telescopic plate 18 extends and resets to the first position, and the propulsion slider 17 pushes a plurality of seedling placing plates 9 to place the outermost new seedling placing plate 9 carrying sweet potato seedlings on the telescopic plate 18 in the first position.

[0052] And the replanting seedling clamping clip 8 in this embodiment can move on the frame 2, and during the transplanting process, it is monitored in real time whether the seedling clamping clips 16 of the transplanter at at least two positions, such as the left and right sides, successfully pick up seedlings; if it is detected that the seedling clamping clip 16 of the transplanter at one of the positions fails to pick up seedlings, the replanting seedling clamping clip 8 can move along the frame 2 to this position and clamp the sweet potato seedlings on the corresponding seedling placing plate 9 for replanting; in addition, if all the sweet potato seedlings on the seedling placing plates 9 on the support plate 5 have been replanted, a beeping signal is issued in the main control box 15, and after replacing a support plate 5 full of sweet potato seedlings, the work continues.

[0053] Embodiment 2

[0054] This embodiment provides a seedling supplementing method for the seedling supplementing device of a sweet potato transplanter described in Embodiment 1, which includes:

[0055] S1: The tail end of the seedling placing plate 9 is sequentially placed on the support plate 5 along the bayonet 21 of the support plate, sweet potato seedlings are placed on the seedling placing plate 9, and then the support plate 5 is placed on the carrier plate frame 10;

[0056] S2: The sweet potato transplanter is towed and started by a tractor, and two high-speed cameras 14 in front of the transplanter frame 1 take pictures to obtain the seedling picking information of the seedling clamping clip 16 of the transplanter and transmit it to the CPU processor in the main control box 15. The CPU processor uses the trained discrimination model to determine whether the seedling clamping clip 16 of the transplanter misses seedlings, and transmits the information of whether seedlings are missed to the PLC in the main control box 15;

[0057] S3: If the CPU processor discriminates that there is no missed seedling, no replanting instruction is sent to the PLC controller, the machine continues to move forward, and the seedling supplementing device does not act;

[0058] S4: If the CPU processor identifies that a seedling is missing, it sends a replanting instruction to the PLC controller. If the image captured by the right high-speed camera 14 identifies that a seedling is missing, the PLC controller sends a pulse signal to the drive motor 7. The drive motor 7 drives the replanting seedling clamp 8 to perform a crank-rocker motion, making one seedling planting action to complete the replanting, and waiting for the next replanting instruction to be issued.

[0059] S5: During the process of the replanting seedling clamp 8 clamping the sweet potato seedlings for replanting, the seedling plate 9 after the sweet potato seedlings are clamped is an empty plate. At this time, the PLC controller sends an instruction to the electric push rod 11. The electric push rod 11 pulls back to drive the telescopic plate to retract. The empty seedling plate 9 falls into the collection box 12 under the action of gravity. Then the electric push rod 11 pushes forward to drive the telescopic plate 18 to extend again. After the telescopic plate 18 is reset, the PLC controller sends a pulse signal to the lead screw motor 4. The lead screw motor 4 drives the propulsion slider 17 to push forward, and pushes the new seedling plate 9 carrying sweet potato seedlings to the predetermined position, so that the replanting seedling clamp 8 can complete the seedling clamping and planting operation in time when the next replanting instruction is issued;

[0060] S6: If the image captured by the left high-speed camera 14 identifies that a seedling is missing, the PLC controller sends a pulse signal to the drive motor 7. The drive motor 7 drives the replanting seedling clamp 8 to only complete the action of clamping the sweet potato seedlings. At this time, the slider 6 moves left along the slide rail 3. After moving to the corresponding position, the PLC controller sends a pulse signal to the drive motor 7 again. The drive motor 7 drives the replanting seedling clamp 8 to perform a crank-rocker motion, so that the replanting seedling clamp 8 that has clamped the sweet potato seedlings completes the remaining planting action. After the replanting is completed, the replanting seedling clamp 8 is reset, and the slider returns to the right along the slide rail. The seedling feeding device repeats the previous operation to complete the seedling feeding, and waits for the next seedling replanting instruction to be issued.

[0061] S7: If the sweet potato seedlings on the pallet 5 have been replanted, a beeping signal is issued in the main control box 15. The staff only needs to replace a pallet 5 full of sweet potato seedlings to continue working.

[0062] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A seedling supplementing device for a sweet potato transplanting machine, characterized in that, It includes a transplanting locomotive frame, a frame provided on the transplanting locomotive frame, and a supplementary planting seedling clamping device provided on the frame. It further includes a seedling feeding device installed at the tail of the frame. The seedling feeding device includes: A lead screw module, including a lead screw motor installed on the frame and a propulsion slider that can be driven by the lead screw motor. A push plate is connected to the propulsion slider; A carrier plate frame, which is provided above the lead screw module; A support plate that can be placed on the carrier plate frame; clamping openings are formed on both sides of the support plate; a plurality of seedling placing plates are moved into the clamping openings and arranged on the support plate in sequence. Openings are formed on both the carrier plate frame and the support plate; A collection frame, which is provided below one end of the support plate away from the lead screw motor; A telescopic plate, which is provided below the carrier plate frame. The telescopic plate can be driven by an electric push rod to move between a first position and a second position; when the propulsion slider is driven by the lead screw motor to move, the push plate pushes a plurality of seedling placing plates arranged on the support plate along the opening, and the outermost seedling placing plate is extended onto the telescopic plate at the first position. At this time, the outermost seedling placing plate can be clamped by the supplementary planting seedling clamping device to pick up sweet potato seedlings. After the telescopic plate retracts from the first position to the second position, the outermost empty seedling placing plate loses support and falls into the collection frame.

2. The seedling supplementing device of the sweet potato transplanter according to claim 1, wherein, The frame is fastened to the rear of the vehicle frame by U-shaped bolts.

3. The seedling replenishing device of the sweet potato transplanter according to claim 1, characterized in that, It further includes: A slide rail, which is fixed on the frame, and a moving slider is provided on the slide rail; A support frame, which is provided on the moving slider; the supplementary planting seedling clamping device is provided on the side of the support frame. A driving motor is further provided on the support frame, and the driving motor is used to drive the supplementary planting seedling clamping device to clamp and plant seedlings; the moving slider can move along the slide rail to adjust the position of the supplementary planting seedling clamping device.

4. The seedling filling device of the sweet potato transplanter according to claim 1, characterized in that, The lead screw module further includes: A lead screw support, the output end of the lead screw motor is connected to the lead screw through the lead screw support, and the propulsion slider is provided on the lead screw; the carrier plate frame is fixed on the lead screw support.

5. The seedling supplementing device of the sweet potato transplanter according to claim 1, characterized in that The electric push rod is installed below the carrier plate frame, and a card slot is further provided below the carrier plate frame. Both sides of the telescopic plate are located in the card slot so that the telescopic plate can move between the first position and the second position along a preset path.

6. The seedling supplementing device of the sweet potato transplanter according to claim 1, characterized in that, The telescopic rod is a "concave"-shaped mechanism that is recessed toward the lead screw module.

7. The seedling supplementing device of the sweet potato transplanter according to claim 1, characterized in that, It further includes: A placement frame, which is fixed on the carrier plate frame, and the collection frame is placed in the placement frame.

8. The seedling supplementing device of the sweet potato transplanter according to claim 1, characterized in that, It further includes: A high-speed camera, which is provided on the transplanting locomotive frame in front of the supplementary planting seedling clamping device and is used to collect image information on whether the transplanting machine seedling clamping device successfully clamps sweet potato seedlings; A total control box, which is provided on the transplanting locomotive frame. The total control box is configured to judge whether the transplanting machine seedling clamping device has missed planting according to the image information; If it is judged that there is missed planting, a supplementary planting instruction is issued.

9. A method for supplementing seedlings of a seedling supplementing device of a sweet potato transplanting machine, characterized in that, Based on any one of claims 1-8, the sweet potato transplanting machine supplementary planting device is carried out, including: Step S1: Arrange a plurality of seedling placing plates carrying sweet potato seedlings on the support plate in sequence along the clamping openings of the support plate; Step S2: The transplanting locomotive frame is towed and started, and during the transplanting process, it is monitored in real time whether the transplanting machine seedling clamping device has successfully picked up seedlings; Step S3: If no seedling picking failure is detected, the transplanter continues to move forward and the seedling replenishing device does not operate. If a seedling picking failure is detected, a replanting instruction is issued. Step S4: In response to the replanting instruction, the replanting seedling picking clamp picks up sweet potato seedlings on the outermost seedling placing plate for replanting. The telescopic plate moves from the first position to the second position and retracts, and the outermost empty seedling placing plate falls into the collection box. Subsequently, the telescopic plate extends and resets to the first position, and the propulsion slider pushes multiple seedling placing plates to place the outermost new seedling placing plate carrying sweet potato seedlings on the telescopic plate at the first position.

10. The method for replenishing seedlings of the seedling replenishing device of a sweet potato transplanter according to claim 9, wherein, The replanting seedling picking clamp can move on the frame, and during the transplanting process, it monitors in real time whether the seedling picking clamps of the transplanter at at least two positions pick up seedlings successfully. The seedling replenishing method further includes: If it is detected that the seedling picking clamp of the transplanter at one of the positions fails to pick up seedlings, the replanting seedling picking clamp can move along the frame to this position and pick up sweet potato seedlings on the corresponding seedling placing plate for replanting. If all the sweet potato seedlings on the seedling placing plates on the pallet have been replanted, a beeping signal is issued in the main control box, and after replacing a pallet full of sweet potato seedlings, the work continues.

Images